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PAaveIntegration | contracts/masset/peripheral/AaveV2Integration.sol | 0x4094aec22f40f11c29941d144c3dc887b33f5504 | Solidity | AaveV2Integration | contract AaveV2Integration is AbstractIntegration {
using SafeERC20 for IERC20;
// Core address for the given platform */
address public immutable platformAddress;
address public immutable rewardToken;
event RewardTokenApproved(address rewardToken, address account);
/**
* @param _nexus Address of the Nexus
* @param _lp Address of LP
* @param _platformAddress Generic platform address
* @param _rewardToken Reward token, if any
*/
constructor(
address _nexus,
address _lp,
address _platformAddress,
address _rewardToken
) AbstractIntegration(_nexus, _lp) {
require(_platformAddress != address(0), "Invalid platform address");
platformAddress = _platformAddress;
rewardToken = _rewardToken;
}
/***************************************
ADMIN
****************************************/
/**
* @dev Approves Liquidator to spend reward tokens
*/
function approveRewardToken() external onlyGovernor {
address liquidator = nexus.getModule(keccak256("Liquidator"));
require(liquidator != address(0), "Liquidator address cannot be zero");
MassetHelpers.safeInfiniteApprove(rewardToken, liquidator);
emit RewardTokenApproved(rewardToken, liquidator);
}
/***************************************
CORE
****************************************/
/**
* @dev Deposit a quantity of bAsset into the platform. Credited aTokens
* remain here in the vault. Can only be called by whitelisted addresses
* (mAsset and corresponding BasketManager)
* @param _bAsset Address for the bAsset
* @param _amount Units of bAsset to deposit
* @param _hasTxFee Is the bAsset known to have a tx fee?
* @return quantityDeposited Quantity of bAsset that entered the platform
*/
function deposit(
address _bAsset,
uint256 _amount,
bool _hasTxFee
) external override onlyLP nonReentrant returns (uint256 quantityDeposited) {
require(_amount > 0, "Must deposit something");
IAaveATokenV2 aToken = _getATokenFor(_bAsset);
quantityDeposited = _amount;
if (_hasTxFee) {
// If we charge a fee, account for it
uint256 prevBal = _checkBalance(aToken);
_getLendingPool().deposit(_bAsset, _amount, address(this), 36);
uint256 newBal = _checkBalance(aToken);
quantityDeposited = _min(quantityDeposited, newBal - prevBal);
} else {
_getLendingPool().deposit(_bAsset, _amount, address(this), 36);
}
emit Deposit(_bAsset, address(aToken), quantityDeposited);
}
/**
* @dev Withdraw a quantity of bAsset from the platform
* @param _receiver Address to which the bAsset should be sent
* @param _bAsset Address of the bAsset
* @param _amount Units of bAsset to withdraw
* @param _hasTxFee Is the bAsset known to have a tx fee?
*/
function withdraw(
address _receiver,
address _bAsset,
uint256 _amount,
bool _hasTxFee
) external override onlyLP nonReentrant {
_withdraw(_receiver, _bAsset, _amount, _amount, _hasTxFee);
}
/**
* @dev Withdraw a quantity of bAsset from the platform
* @param _receiver Address to which the bAsset should be sent
* @param _bAsset Address of the bAsset
* @param _amount Units of bAsset to send to recipient
* @param _totalAmount Total units to pull from lending platform
* @param _hasTxFee Is the bAsset known to have a tx fee?
*/
function withdraw(
address _receiver,
address _bAsset,
uint256 _amount,
uint256 _totalAmount,
bool _hasTxFee
) external override onlyLP nonReentrant {
_withdraw(_receiver, _bAsset, _amount, _totalAmount, _hasTxFee);
}
/** @dev Withdraws _totalAmount from the lending pool, sending _amount to user */
function _withdraw(
address _receiver,
address _bAsset,
uint256 _amount,
uint256 _totalAmount,
bool _hasTxFee
) internal {
require(_totalAmount > 0, "Must withdraw something");
IAaveATokenV2 aToken = _getATokenFor(_bAsset);
if (_hasTxFee) {
require(_amount == _totalAmount, "Cache inactive for assets with fee");
_getLendingPool().withdraw(_bAsset, _amount, _receiver);
} else {
_getLendingPool().withdraw(_bAsset, _totalAmount, address(this));
// Send redeemed bAsset to the receiver
IERC20(_bAsset).safeTransfer(_receiver, _amount);
}
emit PlatformWithdrawal(_bAsset, address(aToken), _totalAmount, _amount);
}
/**
* @dev Withdraw a quantity of bAsset from the cache.
* @param _receiver Address to which the bAsset should be sent
* @param _bAsset Address of the bAsset
* @param _amount Units of bAsset to withdraw
*/
function withdrawRaw(
address _receiver,
address _bAsset,
uint256 _amount
) external override onlyLP nonReentrant {
require(_amount > 0, "Must withdraw something");
require(_receiver != address(0), "Must specify recipient");
IERC20(_bAsset).safeTransfer(_receiver, _amount);
emit Withdrawal(_bAsset, address(0), _amount);
}
/**
* @dev Get the total bAsset value held in the platform
* This includes any interest that was generated since depositing
* Aave gradually increases the balances of all aToken holders, as the interest grows
* @param _bAsset Address of the bAsset
* @return balance Total value of the bAsset in the platform
*/
function checkBalance(address _bAsset) external view override returns (uint256 balance) {
// balance is always with token aToken decimals
IAaveATokenV2 aToken = _getATokenFor(_bAsset);
return _checkBalance(aToken);
}
/***************************************
APPROVALS
****************************************/
/**
* @dev Internal method to respond to the addition of new bAsset / pTokens
* We need to approve the Aave lending pool core conrtact and give it permission
* to spend the bAsset
* @param _bAsset Address of the bAsset to approve
*/
function _abstractSetPToken(
address _bAsset,
address /*_pToken*/
) internal override {
address lendingPool = address(_getLendingPool());
// approve the pool to spend the bAsset
MassetHelpers.safeInfiniteApprove(_bAsset, lendingPool);
}
/***************************************
HELPERS
****************************************/
/**
* @dev Get the current address of the Aave lending pool, which is the gateway to
* depositing.
* @return Current lending pool implementation
*/
function _getLendingPool() internal view returns (IAaveLendingPoolV2) {
address lendingPool = ILendingPoolAddressesProviderV2(platformAddress).getLendingPool();
require(lendingPool != address(0), "Lending pool does not exist");
return IAaveLendingPoolV2(lendingPool);
}
/**
* @dev Get the pToken wrapped in the IAaveAToken interface for this bAsset, to use
* for withdrawing or balance checking. Fails if the pToken doesn't exist in our mappings.
* @param _bAsset Address of the bAsset
* @return aToken Corresponding to this bAsset
*/
function _getATokenFor(address _bAsset) internal view returns (IAaveATokenV2) {
address aToken = bAssetToPToken[_bAsset];
require(aToken != address(0), "aToken does not exist");
return IAaveATokenV2(aToken);
}
/**
* @dev Get the total bAsset value held in the platform
* @param _aToken aToken for which to check balance
* @return balance Total value of the bAsset in the platform
*/
function _checkBalance(IAaveATokenV2 _aToken) internal view returns (uint256 balance) {
return _aToken.balanceOf(address(this));
}
} | /**
* @title AaveV2Integration
* @author mStable
* @notice A simple connection to deposit and withdraw bAssets from Aave
* @dev VERSION: 1.0
* DATE: 2020-16-11
*/ | NatSpecMultiLine | _checkBalance | function _checkBalance(IAaveATokenV2 _aToken) internal view returns (uint256 balance) {
return _aToken.balanceOf(address(this));
}
| /**
* @dev Get the total bAsset value held in the platform
* @param _aToken aToken for which to check balance
* @return balance Total value of the bAsset in the platform
*/ | NatSpecMultiLine | v0.8.6+commit.11564f7e | {
"func_code_index": [
8229,
8375
]
} | 2,700 |
||
Token | Token.sol | 0xa62621a592bf8ec23718e5593c2d668327381648 | Solidity | ERC20Base | contract ERC20Base is ERC20Interface {
using SafeMath for uint256;
string public symbol;
string public name;
uint8 public decimals;
uint public totalSupply_;
address public owner;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* @dev Constructor
*/
constructor(address _owner) public {
symbol = "DTC";
name = "Delta Coin";
decimals = 18;
totalSupply_ = 272 * (10 ** 8) * (10 ** 18);
owner = _owner;
balances[owner] = totalSupply_;
emit Transfer(address(0), owner, totalSupply_);
}
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint _value) public returns (bool success) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Destoys `amount` tokens, reducing the total supply.
* @param _value must have at least `amount` tokens.
*/
function burn(uint256 _value) public {
address account = msg.sender;
totalSupply_ = totalSupply_.sub(_value);
balances[account] = balances[account].sub(_value);
emit Transfer(account, address(0), _value);
}
} | totalSupply | function totalSupply() public view returns (uint256) {
return totalSupply_;
}
| /**
* @dev total number of tokens in existence
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://3ba331a200d1c272e4d4a16ee63afef52d0e08e05f0b087031343bfc0112e90f | {
"func_code_index": [
730,
826
]
} | 2,701 |
|||
Token | Token.sol | 0xa62621a592bf8ec23718e5593c2d668327381648 | Solidity | ERC20Base | contract ERC20Base is ERC20Interface {
using SafeMath for uint256;
string public symbol;
string public name;
uint8 public decimals;
uint public totalSupply_;
address public owner;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* @dev Constructor
*/
constructor(address _owner) public {
symbol = "DTC";
name = "Delta Coin";
decimals = 18;
totalSupply_ = 272 * (10 ** 8) * (10 ** 18);
owner = _owner;
balances[owner] = totalSupply_;
emit Transfer(address(0), owner, totalSupply_);
}
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint _value) public returns (bool success) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Destoys `amount` tokens, reducing the total supply.
* @param _value must have at least `amount` tokens.
*/
function burn(uint256 _value) public {
address account = msg.sender;
totalSupply_ = totalSupply_.sub(_value);
balances[account] = balances[account].sub(_value);
emit Transfer(account, address(0), _value);
}
} | balanceOf | function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
| /**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://3ba331a200d1c272e4d4a16ee63afef52d0e08e05f0b087031343bfc0112e90f | {
"func_code_index": [
1042,
1162
]
} | 2,702 |
|||
Token | Token.sol | 0xa62621a592bf8ec23718e5593c2d668327381648 | Solidity | ERC20Base | contract ERC20Base is ERC20Interface {
using SafeMath for uint256;
string public symbol;
string public name;
uint8 public decimals;
uint public totalSupply_;
address public owner;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* @dev Constructor
*/
constructor(address _owner) public {
symbol = "DTC";
name = "Delta Coin";
decimals = 18;
totalSupply_ = 272 * (10 ** 8) * (10 ** 18);
owner = _owner;
balances[owner] = totalSupply_;
emit Transfer(address(0), owner, totalSupply_);
}
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint _value) public returns (bool success) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Destoys `amount` tokens, reducing the total supply.
* @param _value must have at least `amount` tokens.
*/
function burn(uint256 _value) public {
address account = msg.sender;
totalSupply_ = totalSupply_.sub(_value);
balances[account] = balances[account].sub(_value);
emit Transfer(account, address(0), _value);
}
} | transfer | function transfer(address _to, uint _value) public returns (bool success) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
| /**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://3ba331a200d1c272e4d4a16ee63afef52d0e08e05f0b087031343bfc0112e90f | {
"func_code_index": [
1330,
1695
]
} | 2,703 |
|||
Token | Token.sol | 0xa62621a592bf8ec23718e5593c2d668327381648 | Solidity | ERC20Base | contract ERC20Base is ERC20Interface {
using SafeMath for uint256;
string public symbol;
string public name;
uint8 public decimals;
uint public totalSupply_;
address public owner;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* @dev Constructor
*/
constructor(address _owner) public {
symbol = "DTC";
name = "Delta Coin";
decimals = 18;
totalSupply_ = 272 * (10 ** 8) * (10 ** 18);
owner = _owner;
balances[owner] = totalSupply_;
emit Transfer(address(0), owner, totalSupply_);
}
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint _value) public returns (bool success) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Destoys `amount` tokens, reducing the total supply.
* @param _value must have at least `amount` tokens.
*/
function burn(uint256 _value) public {
address account = msg.sender;
totalSupply_ = totalSupply_.sub(_value);
balances[account] = balances[account].sub(_value);
emit Transfer(account, address(0), _value);
}
} | approve | function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
| /**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://3ba331a200d1c272e4d4a16ee63afef52d0e08e05f0b087031343bfc0112e90f | {
"func_code_index": [
1937,
2148
]
} | 2,704 |
|||
Token | Token.sol | 0xa62621a592bf8ec23718e5593c2d668327381648 | Solidity | ERC20Base | contract ERC20Base is ERC20Interface {
using SafeMath for uint256;
string public symbol;
string public name;
uint8 public decimals;
uint public totalSupply_;
address public owner;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* @dev Constructor
*/
constructor(address _owner) public {
symbol = "DTC";
name = "Delta Coin";
decimals = 18;
totalSupply_ = 272 * (10 ** 8) * (10 ** 18);
owner = _owner;
balances[owner] = totalSupply_;
emit Transfer(address(0), owner, totalSupply_);
}
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint _value) public returns (bool success) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Destoys `amount` tokens, reducing the total supply.
* @param _value must have at least `amount` tokens.
*/
function burn(uint256 _value) public {
address account = msg.sender;
totalSupply_ = totalSupply_.sub(_value);
balances[account] = balances[account].sub(_value);
emit Transfer(account, address(0), _value);
}
} | transferFrom | function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
| /**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://3ba331a200d1c272e4d4a16ee63afef52d0e08e05f0b087031343bfc0112e90f | {
"func_code_index": [
2435,
2928
]
} | 2,705 |
|||
Token | Token.sol | 0xa62621a592bf8ec23718e5593c2d668327381648 | Solidity | ERC20Base | contract ERC20Base is ERC20Interface {
using SafeMath for uint256;
string public symbol;
string public name;
uint8 public decimals;
uint public totalSupply_;
address public owner;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* @dev Constructor
*/
constructor(address _owner) public {
symbol = "DTC";
name = "Delta Coin";
decimals = 18;
totalSupply_ = 272 * (10 ** 8) * (10 ** 18);
owner = _owner;
balances[owner] = totalSupply_;
emit Transfer(address(0), owner, totalSupply_);
}
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint _value) public returns (bool success) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Destoys `amount` tokens, reducing the total supply.
* @param _value must have at least `amount` tokens.
*/
function burn(uint256 _value) public {
address account = msg.sender;
totalSupply_ = totalSupply_.sub(_value);
balances[account] = balances[account].sub(_value);
emit Transfer(account, address(0), _value);
}
} | allowance | function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
| /**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://3ba331a200d1c272e4d4a16ee63afef52d0e08e05f0b087031343bfc0112e90f | {
"func_code_index": [
3259,
3398
]
} | 2,706 |
|||
Token | Token.sol | 0xa62621a592bf8ec23718e5593c2d668327381648 | Solidity | ERC20Base | contract ERC20Base is ERC20Interface {
using SafeMath for uint256;
string public symbol;
string public name;
uint8 public decimals;
uint public totalSupply_;
address public owner;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* @dev Constructor
*/
constructor(address _owner) public {
symbol = "DTC";
name = "Delta Coin";
decimals = 18;
totalSupply_ = 272 * (10 ** 8) * (10 ** 18);
owner = _owner;
balances[owner] = totalSupply_;
emit Transfer(address(0), owner, totalSupply_);
}
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint _value) public returns (bool success) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Destoys `amount` tokens, reducing the total supply.
* @param _value must have at least `amount` tokens.
*/
function burn(uint256 _value) public {
address account = msg.sender;
totalSupply_ = totalSupply_.sub(_value);
balances[account] = balances[account].sub(_value);
emit Transfer(account, address(0), _value);
}
} | burn | function burn(uint256 _value) public {
address account = msg.sender;
totalSupply_ = totalSupply_.sub(_value);
balances[account] = balances[account].sub(_value);
emit Transfer(account, address(0), _value);
}
| /**
* @dev Destoys `amount` tokens, reducing the total supply.
* @param _value must have at least `amount` tokens.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://3ba331a200d1c272e4d4a16ee63afef52d0e08e05f0b087031343bfc0112e90f | {
"func_code_index": [
3542,
3804
]
} | 2,707 |
|||
TeamVesting | contracts/TeamVesting.sol | 0x13d0526c393de67399f262b9ae19c77d067ec344 | Solidity | TeamVesting | contract TeamVesting is Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
event InvestorsAdded(address[] investors, uint256[] tokenAllocations, address caller);
event InvestorAdded(address indexed investor, address indexed caller, uint256 allocation);
event InvestorRemoved(address indexed investor, address indexed caller, uint256 allocation);
event WithdrawnTokens(address indexed investor, uint256 value);
event DepositInvestment(address indexed investor, uint256 value);
event TransferInvestment(address indexed owner, uint256 value);
event RecoverToken(address indexed token, uint256 indexed amount);
uint256 private _totalAllocatedAmount;
uint256 private _initialTimestamp;
IERC20 private _priviToken;
address[] public investors;
struct Investor {
bool exists;
uint256 withdrawnTokens;
uint256 tokensAllotment;
}
uint256[] teamVesting = [
2777777777777780000,
5555555555777780000,
8333333333777780000,
11111111111777800000,
13888888889777800000,
16666666667777800000,
19444444445777800000,
22222222223777800000,
25000000001777800000,
27777777779777800000,
30555555557777800000,
33333333335777800000,
36111111113777800000,
38888888891777800000,
41666666669777800000,
44444444447777800000,
47222222225777800000,
50000000003777800000,
52777777781777800000,
55555555559777800000,
58333333337777800000,
61111111115777800000,
63888888893777800000,
66666666671777800000,
69444444449777800000,
72222222227777800000,
75000000005777800000,
77777777783777800000,
80555555561777800000,
83333333339777800000,
86111111117777800000,
88888888895777800000,
91666666673777800000,
94444444451777800000,
97222222229777800000,
100000000000000000000
];
mapping(address => Investor) public investorsInfo;
/// @dev Boolean variable that indicates whether the contract was initialized.
bool public isInitialized = false;
/// @dev Boolean variable that indicates whether the investors set was finalized.
bool public isFinalized = false;
/// @dev Checks that the contract is initialized.
modifier initialized() {
require(isInitialized, "not initialized");
_;
}
/// @dev Checks that the contract is initialized.
modifier notInitialized() {
require(!isInitialized, "initialized");
_;
}
modifier onlyInvestor() {
require(investorsInfo[_msgSender()].exists, "Only investors allowed");
_;
}
constructor(address _token) {
_priviToken = IERC20(_token);
}
function getInitialTimestamp() public view returns (uint256 timestamp) {
return _initialTimestamp;
}
/// @dev release tokens to all the investors
function releaseTokens() external onlyOwner initialized() {
for (uint8 i = 0; i < investors.length; i++) {
uint256 availableTokens = withdrawableTokens(investors[i]);
_priviToken.safeTransfer(investors[i], availableTokens);
}
}
/// @dev Adds investors. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investors The addresses of new investors.
/// @param _tokenAllocations The amounts of the tokens that belong to each investor.
function addInvestors(address[] calldata _investors, uint256[] calldata _tokenAllocations) external onlyOwner {
require(_investors.length == _tokenAllocations.length, "different arrays sizes");
for (uint256 i = 0; i < _investors.length; i++) {
_addInvestor(_investors[i], _tokenAllocations[i]);
}
emit InvestorsAdded(_investors, _tokenAllocations, msg.sender);
}
function withdrawTokens() external onlyInvestor() initialized() {
Investor storage investor = investorsInfo[_msgSender()];
uint256 tokensAvailable = withdrawableTokens(_msgSender());
require(tokensAvailable > 0, "no tokens available for withdrawl");
investor.withdrawnTokens = investor.withdrawnTokens.add(tokensAvailable);
_priviToken.safeTransfer(_msgSender(), tokensAvailable);
emit WithdrawnTokens(_msgSender(), tokensAvailable);
}
/// @dev The starting time of TGE
/// @param _timestamp The initial timestamp, this timestap should be used for vesting
function setInitialTimestamp(uint256 _timestamp) external onlyOwner() notInitialized() {
isInitialized = true;
_initialTimestamp = _timestamp;
}
/// @dev withdrawble tokens for an address
/// @param _investor whitelisted investor address
function withdrawableTokens(address _investor) public view returns (uint256 tokens) {
Investor storage investor = investorsInfo[_investor];
uint256 availablePercentage = _calculateAvailablePercentage();
uint256 noOfTokens = _calculatePercentage(investor.tokensAllotment, availablePercentage);
uint256 tokensAvailable = noOfTokens.sub(investor.withdrawnTokens);
return tokensAvailable;
}
/// @dev Adds investor. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investor The addresses of new investors.
/// @param _tokensAllotment The amounts of the tokens that belong to each investor.
function _addInvestor(address _investor, uint256 _tokensAllotment) internal onlyOwner {
require(_investor != address(0), "Invalid address");
require(_tokensAllotment > 0, "the investor allocation must be more than 0");
Investor storage investor = investorsInfo[_investor];
require(investor.tokensAllotment == 0, "investor already added");
investor.tokensAllotment = _tokensAllotment;
investor.exists = true;
investors.push(_investor);
_totalAllocatedAmount = _totalAllocatedAmount.add(_tokensAllotment);
emit InvestorAdded(_investor, _msgSender(), _tokensAllotment);
}
/// @dev calculate percentage value from amount
/// @param _amount amount input to find the percentage
/// @param _percentage percentage for an amount
function _calculatePercentage(uint256 _amount, uint256 _percentage) private pure returns (uint256 percentage) {
return _amount.mul(_percentage).div(100).div(1e18);
}
function _calculateAvailablePercentage() private view returns (uint256 availablePercentage) {
uint256 currentTimeStamp = block.timestamp;
uint256 noOfMonths = BokkyPooBahsDateTimeLibrary.diffMonths(_initialTimestamp, currentTimeStamp);
return teamVesting[noOfMonths];
}
function recoverToken(address _token, uint256 amount) external onlyOwner {
IERC20(_token).safeTransfer(_msgSender(), amount);
emit RecoverToken(_token, amount);
}
} | releaseTokens | function releaseTokens() external onlyOwner initialized() {
for (uint8 i = 0; i < investors.length; i++) {
uint256 availableTokens = withdrawableTokens(investors[i]);
_priviToken.safeTransfer(investors[i], availableTokens);
}
}
| /// @dev release tokens to all the investors | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | {
"func_code_index": [
3024,
3299
]
} | 2,708 |
||||
TeamVesting | contracts/TeamVesting.sol | 0x13d0526c393de67399f262b9ae19c77d067ec344 | Solidity | TeamVesting | contract TeamVesting is Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
event InvestorsAdded(address[] investors, uint256[] tokenAllocations, address caller);
event InvestorAdded(address indexed investor, address indexed caller, uint256 allocation);
event InvestorRemoved(address indexed investor, address indexed caller, uint256 allocation);
event WithdrawnTokens(address indexed investor, uint256 value);
event DepositInvestment(address indexed investor, uint256 value);
event TransferInvestment(address indexed owner, uint256 value);
event RecoverToken(address indexed token, uint256 indexed amount);
uint256 private _totalAllocatedAmount;
uint256 private _initialTimestamp;
IERC20 private _priviToken;
address[] public investors;
struct Investor {
bool exists;
uint256 withdrawnTokens;
uint256 tokensAllotment;
}
uint256[] teamVesting = [
2777777777777780000,
5555555555777780000,
8333333333777780000,
11111111111777800000,
13888888889777800000,
16666666667777800000,
19444444445777800000,
22222222223777800000,
25000000001777800000,
27777777779777800000,
30555555557777800000,
33333333335777800000,
36111111113777800000,
38888888891777800000,
41666666669777800000,
44444444447777800000,
47222222225777800000,
50000000003777800000,
52777777781777800000,
55555555559777800000,
58333333337777800000,
61111111115777800000,
63888888893777800000,
66666666671777800000,
69444444449777800000,
72222222227777800000,
75000000005777800000,
77777777783777800000,
80555555561777800000,
83333333339777800000,
86111111117777800000,
88888888895777800000,
91666666673777800000,
94444444451777800000,
97222222229777800000,
100000000000000000000
];
mapping(address => Investor) public investorsInfo;
/// @dev Boolean variable that indicates whether the contract was initialized.
bool public isInitialized = false;
/// @dev Boolean variable that indicates whether the investors set was finalized.
bool public isFinalized = false;
/// @dev Checks that the contract is initialized.
modifier initialized() {
require(isInitialized, "not initialized");
_;
}
/// @dev Checks that the contract is initialized.
modifier notInitialized() {
require(!isInitialized, "initialized");
_;
}
modifier onlyInvestor() {
require(investorsInfo[_msgSender()].exists, "Only investors allowed");
_;
}
constructor(address _token) {
_priviToken = IERC20(_token);
}
function getInitialTimestamp() public view returns (uint256 timestamp) {
return _initialTimestamp;
}
/// @dev release tokens to all the investors
function releaseTokens() external onlyOwner initialized() {
for (uint8 i = 0; i < investors.length; i++) {
uint256 availableTokens = withdrawableTokens(investors[i]);
_priviToken.safeTransfer(investors[i], availableTokens);
}
}
/// @dev Adds investors. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investors The addresses of new investors.
/// @param _tokenAllocations The amounts of the tokens that belong to each investor.
function addInvestors(address[] calldata _investors, uint256[] calldata _tokenAllocations) external onlyOwner {
require(_investors.length == _tokenAllocations.length, "different arrays sizes");
for (uint256 i = 0; i < _investors.length; i++) {
_addInvestor(_investors[i], _tokenAllocations[i]);
}
emit InvestorsAdded(_investors, _tokenAllocations, msg.sender);
}
function withdrawTokens() external onlyInvestor() initialized() {
Investor storage investor = investorsInfo[_msgSender()];
uint256 tokensAvailable = withdrawableTokens(_msgSender());
require(tokensAvailable > 0, "no tokens available for withdrawl");
investor.withdrawnTokens = investor.withdrawnTokens.add(tokensAvailable);
_priviToken.safeTransfer(_msgSender(), tokensAvailable);
emit WithdrawnTokens(_msgSender(), tokensAvailable);
}
/// @dev The starting time of TGE
/// @param _timestamp The initial timestamp, this timestap should be used for vesting
function setInitialTimestamp(uint256 _timestamp) external onlyOwner() notInitialized() {
isInitialized = true;
_initialTimestamp = _timestamp;
}
/// @dev withdrawble tokens for an address
/// @param _investor whitelisted investor address
function withdrawableTokens(address _investor) public view returns (uint256 tokens) {
Investor storage investor = investorsInfo[_investor];
uint256 availablePercentage = _calculateAvailablePercentage();
uint256 noOfTokens = _calculatePercentage(investor.tokensAllotment, availablePercentage);
uint256 tokensAvailable = noOfTokens.sub(investor.withdrawnTokens);
return tokensAvailable;
}
/// @dev Adds investor. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investor The addresses of new investors.
/// @param _tokensAllotment The amounts of the tokens that belong to each investor.
function _addInvestor(address _investor, uint256 _tokensAllotment) internal onlyOwner {
require(_investor != address(0), "Invalid address");
require(_tokensAllotment > 0, "the investor allocation must be more than 0");
Investor storage investor = investorsInfo[_investor];
require(investor.tokensAllotment == 0, "investor already added");
investor.tokensAllotment = _tokensAllotment;
investor.exists = true;
investors.push(_investor);
_totalAllocatedAmount = _totalAllocatedAmount.add(_tokensAllotment);
emit InvestorAdded(_investor, _msgSender(), _tokensAllotment);
}
/// @dev calculate percentage value from amount
/// @param _amount amount input to find the percentage
/// @param _percentage percentage for an amount
function _calculatePercentage(uint256 _amount, uint256 _percentage) private pure returns (uint256 percentage) {
return _amount.mul(_percentage).div(100).div(1e18);
}
function _calculateAvailablePercentage() private view returns (uint256 availablePercentage) {
uint256 currentTimeStamp = block.timestamp;
uint256 noOfMonths = BokkyPooBahsDateTimeLibrary.diffMonths(_initialTimestamp, currentTimeStamp);
return teamVesting[noOfMonths];
}
function recoverToken(address _token, uint256 amount) external onlyOwner {
IERC20(_token).safeTransfer(_msgSender(), amount);
emit RecoverToken(_token, amount);
}
} | addInvestors | function addInvestors(address[] calldata _investors, uint256[] calldata _tokenAllocations) external onlyOwner {
require(_investors.length == _tokenAllocations.length, "different arrays sizes");
for (uint256 i = 0; i < _investors.length; i++) {
_addInvestor(_investors[i], _tokenAllocations[i]);
}
emit InvestorsAdded(_investors, _tokenAllocations, msg.sender);
}
| /// @dev Adds investors. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investors The addresses of new investors.
/// @param _tokenAllocations The amounts of the tokens that belong to each investor. | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | {
"func_code_index": [
3607,
4021
]
} | 2,709 |
||||
TeamVesting | contracts/TeamVesting.sol | 0x13d0526c393de67399f262b9ae19c77d067ec344 | Solidity | TeamVesting | contract TeamVesting is Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
event InvestorsAdded(address[] investors, uint256[] tokenAllocations, address caller);
event InvestorAdded(address indexed investor, address indexed caller, uint256 allocation);
event InvestorRemoved(address indexed investor, address indexed caller, uint256 allocation);
event WithdrawnTokens(address indexed investor, uint256 value);
event DepositInvestment(address indexed investor, uint256 value);
event TransferInvestment(address indexed owner, uint256 value);
event RecoverToken(address indexed token, uint256 indexed amount);
uint256 private _totalAllocatedAmount;
uint256 private _initialTimestamp;
IERC20 private _priviToken;
address[] public investors;
struct Investor {
bool exists;
uint256 withdrawnTokens;
uint256 tokensAllotment;
}
uint256[] teamVesting = [
2777777777777780000,
5555555555777780000,
8333333333777780000,
11111111111777800000,
13888888889777800000,
16666666667777800000,
19444444445777800000,
22222222223777800000,
25000000001777800000,
27777777779777800000,
30555555557777800000,
33333333335777800000,
36111111113777800000,
38888888891777800000,
41666666669777800000,
44444444447777800000,
47222222225777800000,
50000000003777800000,
52777777781777800000,
55555555559777800000,
58333333337777800000,
61111111115777800000,
63888888893777800000,
66666666671777800000,
69444444449777800000,
72222222227777800000,
75000000005777800000,
77777777783777800000,
80555555561777800000,
83333333339777800000,
86111111117777800000,
88888888895777800000,
91666666673777800000,
94444444451777800000,
97222222229777800000,
100000000000000000000
];
mapping(address => Investor) public investorsInfo;
/// @dev Boolean variable that indicates whether the contract was initialized.
bool public isInitialized = false;
/// @dev Boolean variable that indicates whether the investors set was finalized.
bool public isFinalized = false;
/// @dev Checks that the contract is initialized.
modifier initialized() {
require(isInitialized, "not initialized");
_;
}
/// @dev Checks that the contract is initialized.
modifier notInitialized() {
require(!isInitialized, "initialized");
_;
}
modifier onlyInvestor() {
require(investorsInfo[_msgSender()].exists, "Only investors allowed");
_;
}
constructor(address _token) {
_priviToken = IERC20(_token);
}
function getInitialTimestamp() public view returns (uint256 timestamp) {
return _initialTimestamp;
}
/// @dev release tokens to all the investors
function releaseTokens() external onlyOwner initialized() {
for (uint8 i = 0; i < investors.length; i++) {
uint256 availableTokens = withdrawableTokens(investors[i]);
_priviToken.safeTransfer(investors[i], availableTokens);
}
}
/// @dev Adds investors. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investors The addresses of new investors.
/// @param _tokenAllocations The amounts of the tokens that belong to each investor.
function addInvestors(address[] calldata _investors, uint256[] calldata _tokenAllocations) external onlyOwner {
require(_investors.length == _tokenAllocations.length, "different arrays sizes");
for (uint256 i = 0; i < _investors.length; i++) {
_addInvestor(_investors[i], _tokenAllocations[i]);
}
emit InvestorsAdded(_investors, _tokenAllocations, msg.sender);
}
function withdrawTokens() external onlyInvestor() initialized() {
Investor storage investor = investorsInfo[_msgSender()];
uint256 tokensAvailable = withdrawableTokens(_msgSender());
require(tokensAvailable > 0, "no tokens available for withdrawl");
investor.withdrawnTokens = investor.withdrawnTokens.add(tokensAvailable);
_priviToken.safeTransfer(_msgSender(), tokensAvailable);
emit WithdrawnTokens(_msgSender(), tokensAvailable);
}
/// @dev The starting time of TGE
/// @param _timestamp The initial timestamp, this timestap should be used for vesting
function setInitialTimestamp(uint256 _timestamp) external onlyOwner() notInitialized() {
isInitialized = true;
_initialTimestamp = _timestamp;
}
/// @dev withdrawble tokens for an address
/// @param _investor whitelisted investor address
function withdrawableTokens(address _investor) public view returns (uint256 tokens) {
Investor storage investor = investorsInfo[_investor];
uint256 availablePercentage = _calculateAvailablePercentage();
uint256 noOfTokens = _calculatePercentage(investor.tokensAllotment, availablePercentage);
uint256 tokensAvailable = noOfTokens.sub(investor.withdrawnTokens);
return tokensAvailable;
}
/// @dev Adds investor. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investor The addresses of new investors.
/// @param _tokensAllotment The amounts of the tokens that belong to each investor.
function _addInvestor(address _investor, uint256 _tokensAllotment) internal onlyOwner {
require(_investor != address(0), "Invalid address");
require(_tokensAllotment > 0, "the investor allocation must be more than 0");
Investor storage investor = investorsInfo[_investor];
require(investor.tokensAllotment == 0, "investor already added");
investor.tokensAllotment = _tokensAllotment;
investor.exists = true;
investors.push(_investor);
_totalAllocatedAmount = _totalAllocatedAmount.add(_tokensAllotment);
emit InvestorAdded(_investor, _msgSender(), _tokensAllotment);
}
/// @dev calculate percentage value from amount
/// @param _amount amount input to find the percentage
/// @param _percentage percentage for an amount
function _calculatePercentage(uint256 _amount, uint256 _percentage) private pure returns (uint256 percentage) {
return _amount.mul(_percentage).div(100).div(1e18);
}
function _calculateAvailablePercentage() private view returns (uint256 availablePercentage) {
uint256 currentTimeStamp = block.timestamp;
uint256 noOfMonths = BokkyPooBahsDateTimeLibrary.diffMonths(_initialTimestamp, currentTimeStamp);
return teamVesting[noOfMonths];
}
function recoverToken(address _token, uint256 amount) external onlyOwner {
IERC20(_token).safeTransfer(_msgSender(), amount);
emit RecoverToken(_token, amount);
}
} | setInitialTimestamp | function setInitialTimestamp(uint256 _timestamp) external onlyOwner() notInitialized() {
isInitialized = true;
_initialTimestamp = _timestamp;
}
| /// @dev The starting time of TGE
/// @param _timestamp The initial timestamp, this timestap should be used for vesting | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | {
"func_code_index": [
4648,
4816
]
} | 2,710 |
||||
TeamVesting | contracts/TeamVesting.sol | 0x13d0526c393de67399f262b9ae19c77d067ec344 | Solidity | TeamVesting | contract TeamVesting is Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
event InvestorsAdded(address[] investors, uint256[] tokenAllocations, address caller);
event InvestorAdded(address indexed investor, address indexed caller, uint256 allocation);
event InvestorRemoved(address indexed investor, address indexed caller, uint256 allocation);
event WithdrawnTokens(address indexed investor, uint256 value);
event DepositInvestment(address indexed investor, uint256 value);
event TransferInvestment(address indexed owner, uint256 value);
event RecoverToken(address indexed token, uint256 indexed amount);
uint256 private _totalAllocatedAmount;
uint256 private _initialTimestamp;
IERC20 private _priviToken;
address[] public investors;
struct Investor {
bool exists;
uint256 withdrawnTokens;
uint256 tokensAllotment;
}
uint256[] teamVesting = [
2777777777777780000,
5555555555777780000,
8333333333777780000,
11111111111777800000,
13888888889777800000,
16666666667777800000,
19444444445777800000,
22222222223777800000,
25000000001777800000,
27777777779777800000,
30555555557777800000,
33333333335777800000,
36111111113777800000,
38888888891777800000,
41666666669777800000,
44444444447777800000,
47222222225777800000,
50000000003777800000,
52777777781777800000,
55555555559777800000,
58333333337777800000,
61111111115777800000,
63888888893777800000,
66666666671777800000,
69444444449777800000,
72222222227777800000,
75000000005777800000,
77777777783777800000,
80555555561777800000,
83333333339777800000,
86111111117777800000,
88888888895777800000,
91666666673777800000,
94444444451777800000,
97222222229777800000,
100000000000000000000
];
mapping(address => Investor) public investorsInfo;
/// @dev Boolean variable that indicates whether the contract was initialized.
bool public isInitialized = false;
/// @dev Boolean variable that indicates whether the investors set was finalized.
bool public isFinalized = false;
/// @dev Checks that the contract is initialized.
modifier initialized() {
require(isInitialized, "not initialized");
_;
}
/// @dev Checks that the contract is initialized.
modifier notInitialized() {
require(!isInitialized, "initialized");
_;
}
modifier onlyInvestor() {
require(investorsInfo[_msgSender()].exists, "Only investors allowed");
_;
}
constructor(address _token) {
_priviToken = IERC20(_token);
}
function getInitialTimestamp() public view returns (uint256 timestamp) {
return _initialTimestamp;
}
/// @dev release tokens to all the investors
function releaseTokens() external onlyOwner initialized() {
for (uint8 i = 0; i < investors.length; i++) {
uint256 availableTokens = withdrawableTokens(investors[i]);
_priviToken.safeTransfer(investors[i], availableTokens);
}
}
/// @dev Adds investors. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investors The addresses of new investors.
/// @param _tokenAllocations The amounts of the tokens that belong to each investor.
function addInvestors(address[] calldata _investors, uint256[] calldata _tokenAllocations) external onlyOwner {
require(_investors.length == _tokenAllocations.length, "different arrays sizes");
for (uint256 i = 0; i < _investors.length; i++) {
_addInvestor(_investors[i], _tokenAllocations[i]);
}
emit InvestorsAdded(_investors, _tokenAllocations, msg.sender);
}
function withdrawTokens() external onlyInvestor() initialized() {
Investor storage investor = investorsInfo[_msgSender()];
uint256 tokensAvailable = withdrawableTokens(_msgSender());
require(tokensAvailable > 0, "no tokens available for withdrawl");
investor.withdrawnTokens = investor.withdrawnTokens.add(tokensAvailable);
_priviToken.safeTransfer(_msgSender(), tokensAvailable);
emit WithdrawnTokens(_msgSender(), tokensAvailable);
}
/// @dev The starting time of TGE
/// @param _timestamp The initial timestamp, this timestap should be used for vesting
function setInitialTimestamp(uint256 _timestamp) external onlyOwner() notInitialized() {
isInitialized = true;
_initialTimestamp = _timestamp;
}
/// @dev withdrawble tokens for an address
/// @param _investor whitelisted investor address
function withdrawableTokens(address _investor) public view returns (uint256 tokens) {
Investor storage investor = investorsInfo[_investor];
uint256 availablePercentage = _calculateAvailablePercentage();
uint256 noOfTokens = _calculatePercentage(investor.tokensAllotment, availablePercentage);
uint256 tokensAvailable = noOfTokens.sub(investor.withdrawnTokens);
return tokensAvailable;
}
/// @dev Adds investor. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investor The addresses of new investors.
/// @param _tokensAllotment The amounts of the tokens that belong to each investor.
function _addInvestor(address _investor, uint256 _tokensAllotment) internal onlyOwner {
require(_investor != address(0), "Invalid address");
require(_tokensAllotment > 0, "the investor allocation must be more than 0");
Investor storage investor = investorsInfo[_investor];
require(investor.tokensAllotment == 0, "investor already added");
investor.tokensAllotment = _tokensAllotment;
investor.exists = true;
investors.push(_investor);
_totalAllocatedAmount = _totalAllocatedAmount.add(_tokensAllotment);
emit InvestorAdded(_investor, _msgSender(), _tokensAllotment);
}
/// @dev calculate percentage value from amount
/// @param _amount amount input to find the percentage
/// @param _percentage percentage for an amount
function _calculatePercentage(uint256 _amount, uint256 _percentage) private pure returns (uint256 percentage) {
return _amount.mul(_percentage).div(100).div(1e18);
}
function _calculateAvailablePercentage() private view returns (uint256 availablePercentage) {
uint256 currentTimeStamp = block.timestamp;
uint256 noOfMonths = BokkyPooBahsDateTimeLibrary.diffMonths(_initialTimestamp, currentTimeStamp);
return teamVesting[noOfMonths];
}
function recoverToken(address _token, uint256 amount) external onlyOwner {
IERC20(_token).safeTransfer(_msgSender(), amount);
emit RecoverToken(_token, amount);
}
} | withdrawableTokens | function withdrawableTokens(address _investor) public view returns (uint256 tokens) {
Investor storage investor = investorsInfo[_investor];
uint256 availablePercentage = _calculateAvailablePercentage();
uint256 noOfTokens = _calculatePercentage(investor.tokensAllotment, availablePercentage);
uint256 tokensAvailable = noOfTokens.sub(investor.withdrawnTokens);
return tokensAvailable;
}
| /// @dev withdrawble tokens for an address
/// @param _investor whitelisted investor address | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | {
"func_code_index": [
4919,
5354
]
} | 2,711 |
||||
TeamVesting | contracts/TeamVesting.sol | 0x13d0526c393de67399f262b9ae19c77d067ec344 | Solidity | TeamVesting | contract TeamVesting is Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
event InvestorsAdded(address[] investors, uint256[] tokenAllocations, address caller);
event InvestorAdded(address indexed investor, address indexed caller, uint256 allocation);
event InvestorRemoved(address indexed investor, address indexed caller, uint256 allocation);
event WithdrawnTokens(address indexed investor, uint256 value);
event DepositInvestment(address indexed investor, uint256 value);
event TransferInvestment(address indexed owner, uint256 value);
event RecoverToken(address indexed token, uint256 indexed amount);
uint256 private _totalAllocatedAmount;
uint256 private _initialTimestamp;
IERC20 private _priviToken;
address[] public investors;
struct Investor {
bool exists;
uint256 withdrawnTokens;
uint256 tokensAllotment;
}
uint256[] teamVesting = [
2777777777777780000,
5555555555777780000,
8333333333777780000,
11111111111777800000,
13888888889777800000,
16666666667777800000,
19444444445777800000,
22222222223777800000,
25000000001777800000,
27777777779777800000,
30555555557777800000,
33333333335777800000,
36111111113777800000,
38888888891777800000,
41666666669777800000,
44444444447777800000,
47222222225777800000,
50000000003777800000,
52777777781777800000,
55555555559777800000,
58333333337777800000,
61111111115777800000,
63888888893777800000,
66666666671777800000,
69444444449777800000,
72222222227777800000,
75000000005777800000,
77777777783777800000,
80555555561777800000,
83333333339777800000,
86111111117777800000,
88888888895777800000,
91666666673777800000,
94444444451777800000,
97222222229777800000,
100000000000000000000
];
mapping(address => Investor) public investorsInfo;
/// @dev Boolean variable that indicates whether the contract was initialized.
bool public isInitialized = false;
/// @dev Boolean variable that indicates whether the investors set was finalized.
bool public isFinalized = false;
/// @dev Checks that the contract is initialized.
modifier initialized() {
require(isInitialized, "not initialized");
_;
}
/// @dev Checks that the contract is initialized.
modifier notInitialized() {
require(!isInitialized, "initialized");
_;
}
modifier onlyInvestor() {
require(investorsInfo[_msgSender()].exists, "Only investors allowed");
_;
}
constructor(address _token) {
_priviToken = IERC20(_token);
}
function getInitialTimestamp() public view returns (uint256 timestamp) {
return _initialTimestamp;
}
/// @dev release tokens to all the investors
function releaseTokens() external onlyOwner initialized() {
for (uint8 i = 0; i < investors.length; i++) {
uint256 availableTokens = withdrawableTokens(investors[i]);
_priviToken.safeTransfer(investors[i], availableTokens);
}
}
/// @dev Adds investors. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investors The addresses of new investors.
/// @param _tokenAllocations The amounts of the tokens that belong to each investor.
function addInvestors(address[] calldata _investors, uint256[] calldata _tokenAllocations) external onlyOwner {
require(_investors.length == _tokenAllocations.length, "different arrays sizes");
for (uint256 i = 0; i < _investors.length; i++) {
_addInvestor(_investors[i], _tokenAllocations[i]);
}
emit InvestorsAdded(_investors, _tokenAllocations, msg.sender);
}
function withdrawTokens() external onlyInvestor() initialized() {
Investor storage investor = investorsInfo[_msgSender()];
uint256 tokensAvailable = withdrawableTokens(_msgSender());
require(tokensAvailable > 0, "no tokens available for withdrawl");
investor.withdrawnTokens = investor.withdrawnTokens.add(tokensAvailable);
_priviToken.safeTransfer(_msgSender(), tokensAvailable);
emit WithdrawnTokens(_msgSender(), tokensAvailable);
}
/// @dev The starting time of TGE
/// @param _timestamp The initial timestamp, this timestap should be used for vesting
function setInitialTimestamp(uint256 _timestamp) external onlyOwner() notInitialized() {
isInitialized = true;
_initialTimestamp = _timestamp;
}
/// @dev withdrawble tokens for an address
/// @param _investor whitelisted investor address
function withdrawableTokens(address _investor) public view returns (uint256 tokens) {
Investor storage investor = investorsInfo[_investor];
uint256 availablePercentage = _calculateAvailablePercentage();
uint256 noOfTokens = _calculatePercentage(investor.tokensAllotment, availablePercentage);
uint256 tokensAvailable = noOfTokens.sub(investor.withdrawnTokens);
return tokensAvailable;
}
/// @dev Adds investor. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investor The addresses of new investors.
/// @param _tokensAllotment The amounts of the tokens that belong to each investor.
function _addInvestor(address _investor, uint256 _tokensAllotment) internal onlyOwner {
require(_investor != address(0), "Invalid address");
require(_tokensAllotment > 0, "the investor allocation must be more than 0");
Investor storage investor = investorsInfo[_investor];
require(investor.tokensAllotment == 0, "investor already added");
investor.tokensAllotment = _tokensAllotment;
investor.exists = true;
investors.push(_investor);
_totalAllocatedAmount = _totalAllocatedAmount.add(_tokensAllotment);
emit InvestorAdded(_investor, _msgSender(), _tokensAllotment);
}
/// @dev calculate percentage value from amount
/// @param _amount amount input to find the percentage
/// @param _percentage percentage for an amount
function _calculatePercentage(uint256 _amount, uint256 _percentage) private pure returns (uint256 percentage) {
return _amount.mul(_percentage).div(100).div(1e18);
}
function _calculateAvailablePercentage() private view returns (uint256 availablePercentage) {
uint256 currentTimeStamp = block.timestamp;
uint256 noOfMonths = BokkyPooBahsDateTimeLibrary.diffMonths(_initialTimestamp, currentTimeStamp);
return teamVesting[noOfMonths];
}
function recoverToken(address _token, uint256 amount) external onlyOwner {
IERC20(_token).safeTransfer(_msgSender(), amount);
emit RecoverToken(_token, amount);
}
} | _addInvestor | function _addInvestor(address _investor, uint256 _tokensAllotment) internal onlyOwner {
require(_investor != address(0), "Invalid address");
require(_tokensAllotment > 0, "the investor allocation must be more than 0");
Investor storage investor = investorsInfo[_investor];
require(investor.tokensAllotment == 0, "investor already added");
investor.tokensAllotment = _tokensAllotment;
investor.exists = true;
investors.push(_investor);
_totalAllocatedAmount = _totalAllocatedAmount.add(_tokensAllotment);
emit InvestorAdded(_investor, _msgSender(), _tokensAllotment);
}
| /// @dev Adds investor. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investor The addresses of new investors.
/// @param _tokensAllotment The amounts of the tokens that belong to each investor. | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | {
"func_code_index": [
5660,
6310
]
} | 2,712 |
||||
TeamVesting | contracts/TeamVesting.sol | 0x13d0526c393de67399f262b9ae19c77d067ec344 | Solidity | TeamVesting | contract TeamVesting is Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
event InvestorsAdded(address[] investors, uint256[] tokenAllocations, address caller);
event InvestorAdded(address indexed investor, address indexed caller, uint256 allocation);
event InvestorRemoved(address indexed investor, address indexed caller, uint256 allocation);
event WithdrawnTokens(address indexed investor, uint256 value);
event DepositInvestment(address indexed investor, uint256 value);
event TransferInvestment(address indexed owner, uint256 value);
event RecoverToken(address indexed token, uint256 indexed amount);
uint256 private _totalAllocatedAmount;
uint256 private _initialTimestamp;
IERC20 private _priviToken;
address[] public investors;
struct Investor {
bool exists;
uint256 withdrawnTokens;
uint256 tokensAllotment;
}
uint256[] teamVesting = [
2777777777777780000,
5555555555777780000,
8333333333777780000,
11111111111777800000,
13888888889777800000,
16666666667777800000,
19444444445777800000,
22222222223777800000,
25000000001777800000,
27777777779777800000,
30555555557777800000,
33333333335777800000,
36111111113777800000,
38888888891777800000,
41666666669777800000,
44444444447777800000,
47222222225777800000,
50000000003777800000,
52777777781777800000,
55555555559777800000,
58333333337777800000,
61111111115777800000,
63888888893777800000,
66666666671777800000,
69444444449777800000,
72222222227777800000,
75000000005777800000,
77777777783777800000,
80555555561777800000,
83333333339777800000,
86111111117777800000,
88888888895777800000,
91666666673777800000,
94444444451777800000,
97222222229777800000,
100000000000000000000
];
mapping(address => Investor) public investorsInfo;
/// @dev Boolean variable that indicates whether the contract was initialized.
bool public isInitialized = false;
/// @dev Boolean variable that indicates whether the investors set was finalized.
bool public isFinalized = false;
/// @dev Checks that the contract is initialized.
modifier initialized() {
require(isInitialized, "not initialized");
_;
}
/// @dev Checks that the contract is initialized.
modifier notInitialized() {
require(!isInitialized, "initialized");
_;
}
modifier onlyInvestor() {
require(investorsInfo[_msgSender()].exists, "Only investors allowed");
_;
}
constructor(address _token) {
_priviToken = IERC20(_token);
}
function getInitialTimestamp() public view returns (uint256 timestamp) {
return _initialTimestamp;
}
/// @dev release tokens to all the investors
function releaseTokens() external onlyOwner initialized() {
for (uint8 i = 0; i < investors.length; i++) {
uint256 availableTokens = withdrawableTokens(investors[i]);
_priviToken.safeTransfer(investors[i], availableTokens);
}
}
/// @dev Adds investors. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investors The addresses of new investors.
/// @param _tokenAllocations The amounts of the tokens that belong to each investor.
function addInvestors(address[] calldata _investors, uint256[] calldata _tokenAllocations) external onlyOwner {
require(_investors.length == _tokenAllocations.length, "different arrays sizes");
for (uint256 i = 0; i < _investors.length; i++) {
_addInvestor(_investors[i], _tokenAllocations[i]);
}
emit InvestorsAdded(_investors, _tokenAllocations, msg.sender);
}
function withdrawTokens() external onlyInvestor() initialized() {
Investor storage investor = investorsInfo[_msgSender()];
uint256 tokensAvailable = withdrawableTokens(_msgSender());
require(tokensAvailable > 0, "no tokens available for withdrawl");
investor.withdrawnTokens = investor.withdrawnTokens.add(tokensAvailable);
_priviToken.safeTransfer(_msgSender(), tokensAvailable);
emit WithdrawnTokens(_msgSender(), tokensAvailable);
}
/// @dev The starting time of TGE
/// @param _timestamp The initial timestamp, this timestap should be used for vesting
function setInitialTimestamp(uint256 _timestamp) external onlyOwner() notInitialized() {
isInitialized = true;
_initialTimestamp = _timestamp;
}
/// @dev withdrawble tokens for an address
/// @param _investor whitelisted investor address
function withdrawableTokens(address _investor) public view returns (uint256 tokens) {
Investor storage investor = investorsInfo[_investor];
uint256 availablePercentage = _calculateAvailablePercentage();
uint256 noOfTokens = _calculatePercentage(investor.tokensAllotment, availablePercentage);
uint256 tokensAvailable = noOfTokens.sub(investor.withdrawnTokens);
return tokensAvailable;
}
/// @dev Adds investor. This function doesn't limit max gas consumption,
/// so adding too many investors can cause it to reach the out-of-gas error.
/// @param _investor The addresses of new investors.
/// @param _tokensAllotment The amounts of the tokens that belong to each investor.
function _addInvestor(address _investor, uint256 _tokensAllotment) internal onlyOwner {
require(_investor != address(0), "Invalid address");
require(_tokensAllotment > 0, "the investor allocation must be more than 0");
Investor storage investor = investorsInfo[_investor];
require(investor.tokensAllotment == 0, "investor already added");
investor.tokensAllotment = _tokensAllotment;
investor.exists = true;
investors.push(_investor);
_totalAllocatedAmount = _totalAllocatedAmount.add(_tokensAllotment);
emit InvestorAdded(_investor, _msgSender(), _tokensAllotment);
}
/// @dev calculate percentage value from amount
/// @param _amount amount input to find the percentage
/// @param _percentage percentage for an amount
function _calculatePercentage(uint256 _amount, uint256 _percentage) private pure returns (uint256 percentage) {
return _amount.mul(_percentage).div(100).div(1e18);
}
function _calculateAvailablePercentage() private view returns (uint256 availablePercentage) {
uint256 currentTimeStamp = block.timestamp;
uint256 noOfMonths = BokkyPooBahsDateTimeLibrary.diffMonths(_initialTimestamp, currentTimeStamp);
return teamVesting[noOfMonths];
}
function recoverToken(address _token, uint256 amount) external onlyOwner {
IERC20(_token).safeTransfer(_msgSender(), amount);
emit RecoverToken(_token, amount);
}
} | _calculatePercentage | function _calculatePercentage(uint256 _amount, uint256 _percentage) private pure returns (uint256 percentage) {
return _amount.mul(_percentage).div(100).div(1e18);
}
| /// @dev calculate percentage value from amount
/// @param _amount amount input to find the percentage
/// @param _percentage percentage for an amount | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | {
"func_code_index": [
6475,
6656
]
} | 2,713 |
||||
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | totalSupply | function totalSupply() external view returns (uint256);
| /**
* @dev Returns the amount of tokens in existence.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
94,
154
]
} | 2,714 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | balanceOf | function balanceOf(address account) external view returns (uint256);
| /**
* @dev Returns the amount of tokens owned by `account`.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
237,
310
]
} | 2,715 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | transfer | function transfer(address recipient, uint256 amount) external returns (bool);
| /**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
534,
616
]
} | 2,716 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | allowance | function allowance(address owner, address spender) external view returns (uint256);
| /**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
895,
983
]
} | 2,717 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | approve | function approve(address spender, uint256 amount) external returns (bool);
| /**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
1647,
1726
]
} | 2,718 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | transferFrom | function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
| /**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
2039,
2141
]
} | 2,719 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | /**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/ | NatSpecMultiLine | add | function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
| /**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
259,
445
]
} | 2,720 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | /**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/ | NatSpecMultiLine | sub | function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
| /**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
723,
864
]
} | 2,721 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | /**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/ | NatSpecMultiLine | sub | function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
| /**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
1162,
1359
]
} | 2,722 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | /**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/ | NatSpecMultiLine | mul | function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
| /**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
1613,
2089
]
} | 2,723 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | /**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/ | NatSpecMultiLine | div | function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
| /**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
2560,
2697
]
} | 2,724 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | /**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/ | NatSpecMultiLine | div | function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
| /**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
3188,
3471
]
} | 2,725 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | /**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/ | NatSpecMultiLine | mod | function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
| /**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
3931,
4066
]
} | 2,726 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | /**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/ | NatSpecMultiLine | mod | function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
| /**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
4546,
4717
]
} | 2,727 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | isContract | function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
| /**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
606,
1230
]
} | 2,728 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | sendValue | function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
| /**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
2160,
2562
]
} | 2,729 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | functionCall | function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
| /**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
3318,
3496
]
} | 2,730 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | functionCall | function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
| /**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
3721,
3922
]
} | 2,731 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | functionCallWithValue | function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
| /**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
4292,
4523
]
} | 2,732 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | functionCallWithValue | function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
| /**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
4774,
5095
]
} | 2,733 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | name | function name() public view returns (string memory) {
return _name;
}
| /**
* @dev Returns the name of the token.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
902,
990
]
} | 2,734 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | symbol | function symbol() public view returns (string memory) {
return _symbol;
}
| /**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
1104,
1196
]
} | 2,735 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | decimals | function decimals() public view returns (uint8) {
return _decimals;
}
| /**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
1829,
1917
]
} | 2,736 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | totalSupply | function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
| /**
* @dev See {IERC20-totalSupply}.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
1977,
2082
]
} | 2,737 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | balanceOf | function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
| /**
* @dev See {IERC20-balanceOf}.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
2140,
2264
]
} | 2,738 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | transfer | function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
| /**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
2472,
2652
]
} | 2,739 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | allowance | function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
| /**
* @dev See {IERC20-allowance}.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
2710,
2866
]
} | 2,740 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | approve | function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
| /**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
3008,
3182
]
} | 2,741 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | transferFrom | function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
| /**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
3651,
3977
]
} | 2,742 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | increaseAllowance | function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
| /**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
4381,
4604
]
} | 2,743 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | decreaseAllowance | function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
| /**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
5102,
5376
]
} | 2,744 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _transfer | function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
| /**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
5861,
6405
]
} | 2,745 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _mint | function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
| /** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
6681,
7064
]
} | 2,746 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _burn | function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
| /**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
7391,
7814
]
} | 2,747 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _approve | function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
| /**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
8249,
8600
]
} | 2,748 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _setupDecimals | function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
| /**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
8927,
9022
]
} | 2,749 |
ZksToken | ZksToken.sol | 0xe4815ae53b124e7263f08dcdbbb757d41ed658c6 | Solidity | ERC20 | contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _beforeTokenTransfer | function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
| /**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://05ecae0876fbfd0f1dead05d79e1a49610e0721c2d872be1d631451c3d8f8d8e | {
"func_code_index": [
9620,
9717
]
} | 2,750 |
Subrosa | Subrosa.sol | 0x1b85440d66a5903deabb24807d739019ff1741e6 | Solidity | Subrosa | contract Subrosa {
using SafeMath for uint256;
/*
This smart contract allows to collect ether in a
wallet and allow only the owner to withdraw it.
Initialize the wallet with owners address while deploying.
*/
// Events
// Deposit Event from the address
event Deposit(address _from, uint256 _amount);
// Withdraw Event
event WithDraw(address _to, uint256 _amount);
// The owner of the address
address public owner;
// Contract address
address public contractAddress;
// Modifier for only onlyOwner
modifier onlyOwner() {
require (msg.sender == owner);
_;
}
// Default constructor
function Subrosa() public{
owner = 0x193129A669A6Fd24Fc261028570023e91F123573;
contractAddress = this;
}
// Send the ether to current address
// The fall back function to which the ether is sent
function () public payable {
emit Deposit(msg.sender, msg.value);
}
// WithDraw all the ether only owner can withdraw
function withDraw() public onlyOwner () {
owner.transfer(contractAddress.balance);
emit WithDraw(owner, contractAddress.balance);
}
// WithDraw a specific amount in wei
// @param amount the amount to be withdrawn
function withDrawAmount(uint256 amount) public onlyOwner{
require(amount <= contractAddress.balance);
owner.transfer(amount);
emit WithDraw(owner, amount);
}
// Check the current balance of the contract
// @returns balance returns the current balance of wallet
function getBalance() public constant returns(uint256 balance){
return contractAddress.balance;
}
} | Subrosa | function Subrosa() public{
owner = 0x193129A669A6Fd24Fc261028570023e91F123573;
contractAddress = this;
}
| // Default constructor | LineComment | v0.4.22+commit.4cb486ee | bzzr://f0834b5524f29bbb73b0ffd9abe4f22c47063c15a5035b19c5adc5482fbb4ed3 | {
"func_code_index": [
713,
845
]
} | 2,751 |
|||
Subrosa | Subrosa.sol | 0x1b85440d66a5903deabb24807d739019ff1741e6 | Solidity | Subrosa | contract Subrosa {
using SafeMath for uint256;
/*
This smart contract allows to collect ether in a
wallet and allow only the owner to withdraw it.
Initialize the wallet with owners address while deploying.
*/
// Events
// Deposit Event from the address
event Deposit(address _from, uint256 _amount);
// Withdraw Event
event WithDraw(address _to, uint256 _amount);
// The owner of the address
address public owner;
// Contract address
address public contractAddress;
// Modifier for only onlyOwner
modifier onlyOwner() {
require (msg.sender == owner);
_;
}
// Default constructor
function Subrosa() public{
owner = 0x193129A669A6Fd24Fc261028570023e91F123573;
contractAddress = this;
}
// Send the ether to current address
// The fall back function to which the ether is sent
function () public payable {
emit Deposit(msg.sender, msg.value);
}
// WithDraw all the ether only owner can withdraw
function withDraw() public onlyOwner () {
owner.transfer(contractAddress.balance);
emit WithDraw(owner, contractAddress.balance);
}
// WithDraw a specific amount in wei
// @param amount the amount to be withdrawn
function withDrawAmount(uint256 amount) public onlyOwner{
require(amount <= contractAddress.balance);
owner.transfer(amount);
emit WithDraw(owner, amount);
}
// Check the current balance of the contract
// @returns balance returns the current balance of wallet
function getBalance() public constant returns(uint256 balance){
return contractAddress.balance;
}
} | function () public payable {
emit Deposit(msg.sender, msg.value);
}
| // Send the ether to current address
// The fall back function to which the ether is sent | LineComment | v0.4.22+commit.4cb486ee | bzzr://f0834b5524f29bbb73b0ffd9abe4f22c47063c15a5035b19c5adc5482fbb4ed3 | {
"func_code_index": [
948,
1034
]
} | 2,752 |
||||
Subrosa | Subrosa.sol | 0x1b85440d66a5903deabb24807d739019ff1741e6 | Solidity | Subrosa | contract Subrosa {
using SafeMath for uint256;
/*
This smart contract allows to collect ether in a
wallet and allow only the owner to withdraw it.
Initialize the wallet with owners address while deploying.
*/
// Events
// Deposit Event from the address
event Deposit(address _from, uint256 _amount);
// Withdraw Event
event WithDraw(address _to, uint256 _amount);
// The owner of the address
address public owner;
// Contract address
address public contractAddress;
// Modifier for only onlyOwner
modifier onlyOwner() {
require (msg.sender == owner);
_;
}
// Default constructor
function Subrosa() public{
owner = 0x193129A669A6Fd24Fc261028570023e91F123573;
contractAddress = this;
}
// Send the ether to current address
// The fall back function to which the ether is sent
function () public payable {
emit Deposit(msg.sender, msg.value);
}
// WithDraw all the ether only owner can withdraw
function withDraw() public onlyOwner () {
owner.transfer(contractAddress.balance);
emit WithDraw(owner, contractAddress.balance);
}
// WithDraw a specific amount in wei
// @param amount the amount to be withdrawn
function withDrawAmount(uint256 amount) public onlyOwner{
require(amount <= contractAddress.balance);
owner.transfer(amount);
emit WithDraw(owner, amount);
}
// Check the current balance of the contract
// @returns balance returns the current balance of wallet
function getBalance() public constant returns(uint256 balance){
return contractAddress.balance;
}
} | withDraw | function withDraw() public onlyOwner () {
owner.transfer(contractAddress.balance);
emit WithDraw(owner, contractAddress.balance);
}
| // WithDraw all the ether only owner can withdraw | LineComment | v0.4.22+commit.4cb486ee | bzzr://f0834b5524f29bbb73b0ffd9abe4f22c47063c15a5035b19c5adc5482fbb4ed3 | {
"func_code_index": [
1092,
1251
]
} | 2,753 |
|||
Subrosa | Subrosa.sol | 0x1b85440d66a5903deabb24807d739019ff1741e6 | Solidity | Subrosa | contract Subrosa {
using SafeMath for uint256;
/*
This smart contract allows to collect ether in a
wallet and allow only the owner to withdraw it.
Initialize the wallet with owners address while deploying.
*/
// Events
// Deposit Event from the address
event Deposit(address _from, uint256 _amount);
// Withdraw Event
event WithDraw(address _to, uint256 _amount);
// The owner of the address
address public owner;
// Contract address
address public contractAddress;
// Modifier for only onlyOwner
modifier onlyOwner() {
require (msg.sender == owner);
_;
}
// Default constructor
function Subrosa() public{
owner = 0x193129A669A6Fd24Fc261028570023e91F123573;
contractAddress = this;
}
// Send the ether to current address
// The fall back function to which the ether is sent
function () public payable {
emit Deposit(msg.sender, msg.value);
}
// WithDraw all the ether only owner can withdraw
function withDraw() public onlyOwner () {
owner.transfer(contractAddress.balance);
emit WithDraw(owner, contractAddress.balance);
}
// WithDraw a specific amount in wei
// @param amount the amount to be withdrawn
function withDrawAmount(uint256 amount) public onlyOwner{
require(amount <= contractAddress.balance);
owner.transfer(amount);
emit WithDraw(owner, amount);
}
// Check the current balance of the contract
// @returns balance returns the current balance of wallet
function getBalance() public constant returns(uint256 balance){
return contractAddress.balance;
}
} | withDrawAmount | function withDrawAmount(uint256 amount) public onlyOwner{
require(amount <= contractAddress.balance);
owner.transfer(amount);
emit WithDraw(owner, amount);
}
| // WithDraw a specific amount in wei
// @param amount the amount to be withdrawn | LineComment | v0.4.22+commit.4cb486ee | bzzr://f0834b5524f29bbb73b0ffd9abe4f22c47063c15a5035b19c5adc5482fbb4ed3 | {
"func_code_index": [
1345,
1539
]
} | 2,754 |
|||
Subrosa | Subrosa.sol | 0x1b85440d66a5903deabb24807d739019ff1741e6 | Solidity | Subrosa | contract Subrosa {
using SafeMath for uint256;
/*
This smart contract allows to collect ether in a
wallet and allow only the owner to withdraw it.
Initialize the wallet with owners address while deploying.
*/
// Events
// Deposit Event from the address
event Deposit(address _from, uint256 _amount);
// Withdraw Event
event WithDraw(address _to, uint256 _amount);
// The owner of the address
address public owner;
// Contract address
address public contractAddress;
// Modifier for only onlyOwner
modifier onlyOwner() {
require (msg.sender == owner);
_;
}
// Default constructor
function Subrosa() public{
owner = 0x193129A669A6Fd24Fc261028570023e91F123573;
contractAddress = this;
}
// Send the ether to current address
// The fall back function to which the ether is sent
function () public payable {
emit Deposit(msg.sender, msg.value);
}
// WithDraw all the ether only owner can withdraw
function withDraw() public onlyOwner () {
owner.transfer(contractAddress.balance);
emit WithDraw(owner, contractAddress.balance);
}
// WithDraw a specific amount in wei
// @param amount the amount to be withdrawn
function withDrawAmount(uint256 amount) public onlyOwner{
require(amount <= contractAddress.balance);
owner.transfer(amount);
emit WithDraw(owner, amount);
}
// Check the current balance of the contract
// @returns balance returns the current balance of wallet
function getBalance() public constant returns(uint256 balance){
return contractAddress.balance;
}
} | getBalance | function getBalance() public constant returns(uint256 balance){
return contractAddress.balance;
}
| // Check the current balance of the contract
// @returns balance returns the current balance of wallet | LineComment | v0.4.22+commit.4cb486ee | bzzr://f0834b5524f29bbb73b0ffd9abe4f22c47063c15a5035b19c5adc5482fbb4ed3 | {
"func_code_index": [
1655,
1771
]
} | 2,755 |
|||
DebitumToken | DebitumToken.sol | 0x151202c9c18e495656f372281f493eb7698961d5 | Solidity | Ownable | contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
} | Ownable | function Ownable() public {
owner = msg.sender;
}
| /**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/ | NatSpecMultiLine | v0.4.18+commit.9cf6e910 | bzzr://17a8528c91e34bd0e06d8187306573c7a476a20d07c9ce914f43c9b87cfbe5c1 | {
"func_code_index": [
261,
321
]
} | 2,756 |
|||
DebitumToken | DebitumToken.sol | 0x151202c9c18e495656f372281f493eb7698961d5 | Solidity | Ownable | contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
} | transferOwnership | function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
| /**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/ | NatSpecMultiLine | v0.4.18+commit.9cf6e910 | bzzr://17a8528c91e34bd0e06d8187306573c7a476a20d07c9ce914f43c9b87cfbe5c1 | {
"func_code_index": [
644,
820
]
} | 2,757 |
|||
DebitumToken | DebitumToken.sol | 0x151202c9c18e495656f372281f493eb7698961d5 | Solidity | iERC20Token | contract iERC20Token {
uint256 public totalSupply = 0;
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) public view returns (uint256 balance);
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) public returns (bool success);
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
/// @notice `msg.sender` approves `_spender` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of tokens to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) public returns (bool success);
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) public view returns (uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | balanceOf | function balanceOf(address _owner) public view returns (uint256 balance);
| /// @param _owner The address from which the balance will be retrieved
/// @return The balance | NatSpecSingleLine | v0.4.18+commit.9cf6e910 | bzzr://17a8528c91e34bd0e06d8187306573c7a476a20d07c9ce914f43c9b87cfbe5c1 | {
"func_code_index": [
166,
244
]
} | 2,758 |
|||
DebitumToken | DebitumToken.sol | 0x151202c9c18e495656f372281f493eb7698961d5 | Solidity | iERC20Token | contract iERC20Token {
uint256 public totalSupply = 0;
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) public view returns (uint256 balance);
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) public returns (bool success);
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
/// @notice `msg.sender` approves `_spender` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of tokens to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) public returns (bool success);
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) public view returns (uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | transfer | function transfer(address _to, uint256 _value) public returns (bool success);
| /// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not | NatSpecSingleLine | v0.4.18+commit.9cf6e910 | bzzr://17a8528c91e34bd0e06d8187306573c7a476a20d07c9ce914f43c9b87cfbe5c1 | {
"func_code_index": [
481,
563
]
} | 2,759 |
|||
DebitumToken | DebitumToken.sol | 0x151202c9c18e495656f372281f493eb7698961d5 | Solidity | iERC20Token | contract iERC20Token {
uint256 public totalSupply = 0;
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) public view returns (uint256 balance);
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) public returns (bool success);
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
/// @notice `msg.sender` approves `_spender` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of tokens to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) public returns (bool success);
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) public view returns (uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | transferFrom | function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
| /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not | NatSpecSingleLine | v0.4.18+commit.9cf6e910 | bzzr://17a8528c91e34bd0e06d8187306573c7a476a20d07c9ce914f43c9b87cfbe5c1 | {
"func_code_index": [
886,
987
]
} | 2,760 |
|||
DebitumToken | DebitumToken.sol | 0x151202c9c18e495656f372281f493eb7698961d5 | Solidity | iERC20Token | contract iERC20Token {
uint256 public totalSupply = 0;
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) public view returns (uint256 balance);
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) public returns (bool success);
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
/// @notice `msg.sender` approves `_spender` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of tokens to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) public returns (bool success);
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) public view returns (uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | approve | function approve(address _spender, uint256 _value) public returns (bool success);
| /// @notice `msg.sender` approves `_spender` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of tokens to be approved for transfer
/// @return Whether the approval was successful or not | NatSpecSingleLine | v0.4.18+commit.9cf6e910 | bzzr://17a8528c91e34bd0e06d8187306573c7a476a20d07c9ce914f43c9b87cfbe5c1 | {
"func_code_index": [
1277,
1363
]
} | 2,761 |
|||
DebitumToken | DebitumToken.sol | 0x151202c9c18e495656f372281f493eb7698961d5 | Solidity | iERC20Token | contract iERC20Token {
uint256 public totalSupply = 0;
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) public view returns (uint256 balance);
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) public returns (bool success);
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
/// @notice `msg.sender` approves `_spender` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of tokens to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) public returns (bool success);
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) public view returns (uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | allowance | function allowance(address _owner, address _spender) public view returns (uint256 remaining);
| /// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent | NatSpecSingleLine | v0.4.18+commit.9cf6e910 | bzzr://17a8528c91e34bd0e06d8187306573c7a476a20d07c9ce914f43c9b87cfbe5c1 | {
"func_code_index": [
1571,
1669
]
} | 2,762 |
|||
DebitumToken | DebitumToken.sol | 0x151202c9c18e495656f372281f493eb7698961d5 | Solidity | StandardToken | contract StandardToken is iERC20Token {
using SafeMath for uint256;
mapping(address => uint) balances;
mapping (address => mapping (address => uint)) allowed;
function transfer(address _to, uint _value) public returns (bool success) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
function transferFrom(address _from, address _to, uint _value) public returns (bool success) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
Transfer(_from, _to, _value);
return true;
}
function balanceOf(address _owner) public view returns (uint balance) {
return balances[_owner];
}
function approve(address _spender, uint _value) public returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) public view returns (uint remaining) {
return allowed[_owner][_spender];
}
/**
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
*/
function increaseApproval (address _spender, uint _addedValue) public returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval (address _spender, uint _subtractedValue) public returns (bool success) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
} | increaseApproval | function increaseApproval (address _spender, uint _addedValue) public returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
| /**
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
*/ | NatSpecMultiLine | v0.4.18+commit.9cf6e910 | bzzr://17a8528c91e34bd0e06d8187306573c7a476a20d07c9ce914f43c9b87cfbe5c1 | {
"func_code_index": [
1832,
2121
]
} | 2,763 |
|||
DebitumToken | DebitumToken.sol | 0x151202c9c18e495656f372281f493eb7698961d5 | Solidity | FreezableToken | contract FreezableToken is iERC223Token, StandardToken, Ownable {
event ContractTransfer(address indexed _from, address indexed _to, uint _value, bytes _data);
bool public freezed;
modifier canTransfer(address _transferer) {
require(owner == _transferer || !freezed);
_;
}
function FreezableToken() public {
freezed = true;
}
function transfer(address _to, uint _value, bytes _data) canTransfer(msg.sender)
public
canTransfer(msg.sender)
returns (bool success) {
//filtering if the target is a contract with bytecode inside it
require(super.transfer(_to, _value)); // do a normal token transfer
if (isContract(_to)) {
require(contractFallback(msg.sender, _to, _value, _data));
}
return true;
}
function transferFrom(address _from, address _to, uint _value, bytes _data) public canTransfer(msg.sender) returns (bool success) {
require(super.transferFrom(_from, _to, _value)); // do a normal token transfer
if (isContract(_to)) {
require(contractFallback(_from, _to, _value, _data));
}
return true;
}
function transfer(address _to, uint _value) canTransfer(msg.sender) public canTransfer(msg.sender) returns (bool success) {
return transfer(_to, _value, new bytes(0));
}
function transferFrom(address _from, address _to, uint _value) public canTransfer(msg.sender) returns (bool success) {
return transferFrom(_from, _to, _value, new bytes(0));
}
//function that is called when transaction target is a contract
function contractFallback(address _origin, address _to, uint _value, bytes _data) private returns (bool) {
ContractTransfer(_origin, _to, _value, _data);
ERC223Receiver reciever = ERC223Receiver(_to);
require(reciever.tokenFallback(_origin, _value, _data));
return true;
}
//assemble the given address bytecode. If bytecode exists then the _addr is a contract.
function isContract(address _addr) private view returns (bool is_contract) {
uint length;
assembly { length := extcodesize(_addr) }
return length > 0;
}
function unfreeze() public onlyOwner returns (bool){
freezed = false;
return true;
}
} | contractFallback | function contractFallback(address _origin, address _to, uint _value, bytes _data) private returns (bool) {
ContractTransfer(_origin, _to, _value, _data);
ERC223Receiver reciever = ERC223Receiver(_to);
require(reciever.tokenFallback(_origin, _value, _data));
return true;
}
| //function that is called when transaction target is a contract | LineComment | v0.4.18+commit.9cf6e910 | bzzr://17a8528c91e34bd0e06d8187306573c7a476a20d07c9ce914f43c9b87cfbe5c1 | {
"func_code_index": [
1682,
2000
]
} | 2,764 |
|||
DebitumToken | DebitumToken.sol | 0x151202c9c18e495656f372281f493eb7698961d5 | Solidity | FreezableToken | contract FreezableToken is iERC223Token, StandardToken, Ownable {
event ContractTransfer(address indexed _from, address indexed _to, uint _value, bytes _data);
bool public freezed;
modifier canTransfer(address _transferer) {
require(owner == _transferer || !freezed);
_;
}
function FreezableToken() public {
freezed = true;
}
function transfer(address _to, uint _value, bytes _data) canTransfer(msg.sender)
public
canTransfer(msg.sender)
returns (bool success) {
//filtering if the target is a contract with bytecode inside it
require(super.transfer(_to, _value)); // do a normal token transfer
if (isContract(_to)) {
require(contractFallback(msg.sender, _to, _value, _data));
}
return true;
}
function transferFrom(address _from, address _to, uint _value, bytes _data) public canTransfer(msg.sender) returns (bool success) {
require(super.transferFrom(_from, _to, _value)); // do a normal token transfer
if (isContract(_to)) {
require(contractFallback(_from, _to, _value, _data));
}
return true;
}
function transfer(address _to, uint _value) canTransfer(msg.sender) public canTransfer(msg.sender) returns (bool success) {
return transfer(_to, _value, new bytes(0));
}
function transferFrom(address _from, address _to, uint _value) public canTransfer(msg.sender) returns (bool success) {
return transferFrom(_from, _to, _value, new bytes(0));
}
//function that is called when transaction target is a contract
function contractFallback(address _origin, address _to, uint _value, bytes _data) private returns (bool) {
ContractTransfer(_origin, _to, _value, _data);
ERC223Receiver reciever = ERC223Receiver(_to);
require(reciever.tokenFallback(_origin, _value, _data));
return true;
}
//assemble the given address bytecode. If bytecode exists then the _addr is a contract.
function isContract(address _addr) private view returns (bool is_contract) {
uint length;
assembly { length := extcodesize(_addr) }
return length > 0;
}
function unfreeze() public onlyOwner returns (bool){
freezed = false;
return true;
}
} | isContract | function isContract(address _addr) private view returns (bool is_contract) {
uint length;
assembly { length := extcodesize(_addr) }
return length > 0;
}
| //assemble the given address bytecode. If bytecode exists then the _addr is a contract. | LineComment | v0.4.18+commit.9cf6e910 | bzzr://17a8528c91e34bd0e06d8187306573c7a476a20d07c9ce914f43c9b87cfbe5c1 | {
"func_code_index": [
2096,
2285
]
} | 2,765 |
|||
UniqGenerator | ./contracts/UniqGenerator2.sol | 0xb1e9cff95de0681adc3d658df462052512c6dedb | Solidity | UniqGenerator | contract UniqGenerator is ERC721Tradable{
// ----- VARIABLES ----- //
uint256 internal _verificationPrice;
address internal _tokenForPaying;
string public METADATA_PROVENANCE_HASH;
uint256 public immutable ROYALTY_FEE;
string internal _token_uri;
mapping(bytes32 => bool) internal _isItemMinted;
mapping(uint256 => bytes32) internal _hashOf;
mapping(bytes32 => address) internal _verificationRequester;
uint256 internal _tokenNumber;
address internal _claimingAddress;
// ----- MODIFIERS ----- //
modifier notZeroAddress(address a) {
require(a != address(0), "ZERO address can not be used");
_;
}
constructor(
address _proxyRegistryAddress,
string memory _name,
string memory _symbol,
uint256 _verfifyPrice,
address _tokenERC20,
string memory _ttokenUri
)
notZeroAddress(_proxyRegistryAddress)
ERC721Tradable(_name, _symbol, _proxyRegistryAddress)
{
ROYALTY_FEE = 750000; //7.5%
_verificationPrice = _verfifyPrice;
_tokenForPaying = _tokenERC20;
_token_uri = _ttokenUri;
}
function getMessageHash(address _requester, bytes32 _itemHash)
public
pure
returns (bytes32)
{
return keccak256(abi.encodePacked(_requester, _itemHash));
}
function burn(uint256 _tokenId) external {
if (msg.sender != _claimingAddress) {
require(
_isApprovedOrOwner(msg.sender, _tokenId),
"Ownership or approval required"
);
}
_burn(_tokenId);
}
function getEthSignedMessageHash(bytes32 _messageHash)
internal
pure
returns (bytes32)
{
return
keccak256(
abi.encodePacked(
"\x19Ethereum Signed Message:\n32",
_messageHash
)
);
}
function verifySignature(
address _requester,
bytes32 _itemHash,
bytes memory _signature
) internal view returns (bool) {
bytes32 messageHash = getMessageHash(_requester, _itemHash);
bytes32 ethSignedMessageHash = getEthSignedMessageHash(messageHash);
return recoverSigner(ethSignedMessageHash, _signature) == owner();
}
function recoverSigner(
bytes32 _ethSignedMessageHash,
bytes memory _signature
) internal pure returns (address) {
require(_signature.length == 65, "invalid signature length");
bytes32 r;
bytes32 s;
uint8 v;
assembly {
r := mload(add(_signature, 32))
s := mload(add(_signature, 64))
v := byte(0, mload(add(_signature, 96)))
}
return ecrecover(_ethSignedMessageHash, v, r, s);
}
function isMintedForHash(bytes32 _itemHash) external view returns (bool) {
return _isItemMinted[_itemHash];
}
function hashOf(uint256 _id) external view returns (bytes32) {
return _hashOf[_id];
}
function royaltyInfo(uint256)
external
view
returns (address receiver, uint256 amount)
{
return (owner(), ROYALTY_FEE);
}
function tokensOfOwner(address _owner)
external
view
returns (uint256[] memory)
{
uint256 tokenCount = balanceOf(_owner);
if (tokenCount == 0) {
// Return an empty array
return new uint256[](0);
} else {
uint256[] memory result = new uint256[](tokenCount);
uint256 index;
for (index = 0; index < tokenCount; index++) {
result[index] = tokenOfOwnerByIndex(_owner, index);
}
return result;
}
}
function verificationRequester(bytes32 _itemHash)
external
view
returns (address)
{
return _verificationRequester[_itemHash];
}
function getClaimerAddress() external view returns (address) {
return _claimingAddress;
}
function getVerificationPrice() external view returns (uint256) {
return _verificationPrice;
}
function baseTokenURI() override public view returns (string memory) {
return _token_uri;
}
function contractURI() public pure returns (string memory) {
return "https://uniqly.com/api/nft-generator/";
}
// ----- PUBLIC METHODS ----- //
function payForVerification(bytes32 _itemHash) external {
require(!_isItemMinted[_itemHash], "Already minted");
require(
_verificationRequester[_itemHash] == address(0),
"Verification already requested"
);
require(
IERC20(_tokenForPaying).transferFrom(
msg.sender,
address(this),
_verificationPrice
)
);
_verificationRequester[_itemHash] = msg.sender;
}
function mintVerified(bytes32 _itemHash, bytes memory _signature) external {
require(
_verificationRequester[_itemHash] == msg.sender,
"Verification Requester mismatch"
);
require(!_isItemMinted[_itemHash], "Already minted");
require(
verifySignature(msg.sender, _itemHash, _signature),
"Signature mismatch"
);
_isItemMinted[_itemHash] = true;
_safeMint(msg.sender, _tokenNumber);
_hashOf[_tokenNumber] = _itemHash;
_tokenNumber++;
}
// ----- OWNERS METHODS ----- //
function setProvenanceHash(string memory _hash) external onlyOwner {
METADATA_PROVENANCE_HASH = _hash;
}
function editTokenUri(string memory _ttokenUri) external onlyOwner{
_token_uri = _ttokenUri;
}
function setTokenAddress(address _newAddress) external onlyOwner {
_tokenForPaying = _newAddress;
}
function editVireficationPrice(uint256 _newPrice) external onlyOwner {
_verificationPrice = _newPrice;
}
function editClaimingAdress(address _newAddress) external onlyOwner {
_claimingAddress = _newAddress;
}
function recoverERC20(address token) external onlyOwner {
uint256 val = IERC20(token).balanceOf(address(this));
require(val > 0, "Nothing to recover");
// use interface that not return value (USDT case)
Ierc20(token).transfer(owner(), val);
}
function receivedRoyalties(
address,
address _buyer,
uint256 _tokenId,
address _tokenPaid,
uint256 _amount
) external {
emit ReceivedRoyalties(owner(), _buyer, _tokenId, _tokenPaid, _amount);
}
event ReceivedRoyalties(
address indexed _royaltyRecipient,
address indexed _buyer,
uint256 indexed _tokenId,
address _tokenPaid,
uint256 _amount
);
} | payForVerification | function payForVerification(bytes32 _itemHash) external {
require(!_isItemMinted[_itemHash], "Already minted");
require(
_verificationRequester[_itemHash] == address(0),
"Verification already requested"
);
require(
IERC20(_tokenForPaying).transferFrom(
msg.sender,
address(this),
_verificationPrice
)
);
_verificationRequester[_itemHash] = msg.sender;
}
| // ----- PUBLIC METHODS ----- // | LineComment | v0.8.6+commit.11564f7e | None | ipfs://8684d54a22c734896df6299361d52ced1d6d29a3d3f98e0413f94190e5a256b7 | {
"func_code_index": [
4466,
4971
]
} | 2,766 |
||
UniqGenerator | ./contracts/UniqGenerator2.sol | 0xb1e9cff95de0681adc3d658df462052512c6dedb | Solidity | UniqGenerator | contract UniqGenerator is ERC721Tradable{
// ----- VARIABLES ----- //
uint256 internal _verificationPrice;
address internal _tokenForPaying;
string public METADATA_PROVENANCE_HASH;
uint256 public immutable ROYALTY_FEE;
string internal _token_uri;
mapping(bytes32 => bool) internal _isItemMinted;
mapping(uint256 => bytes32) internal _hashOf;
mapping(bytes32 => address) internal _verificationRequester;
uint256 internal _tokenNumber;
address internal _claimingAddress;
// ----- MODIFIERS ----- //
modifier notZeroAddress(address a) {
require(a != address(0), "ZERO address can not be used");
_;
}
constructor(
address _proxyRegistryAddress,
string memory _name,
string memory _symbol,
uint256 _verfifyPrice,
address _tokenERC20,
string memory _ttokenUri
)
notZeroAddress(_proxyRegistryAddress)
ERC721Tradable(_name, _symbol, _proxyRegistryAddress)
{
ROYALTY_FEE = 750000; //7.5%
_verificationPrice = _verfifyPrice;
_tokenForPaying = _tokenERC20;
_token_uri = _ttokenUri;
}
function getMessageHash(address _requester, bytes32 _itemHash)
public
pure
returns (bytes32)
{
return keccak256(abi.encodePacked(_requester, _itemHash));
}
function burn(uint256 _tokenId) external {
if (msg.sender != _claimingAddress) {
require(
_isApprovedOrOwner(msg.sender, _tokenId),
"Ownership or approval required"
);
}
_burn(_tokenId);
}
function getEthSignedMessageHash(bytes32 _messageHash)
internal
pure
returns (bytes32)
{
return
keccak256(
abi.encodePacked(
"\x19Ethereum Signed Message:\n32",
_messageHash
)
);
}
function verifySignature(
address _requester,
bytes32 _itemHash,
bytes memory _signature
) internal view returns (bool) {
bytes32 messageHash = getMessageHash(_requester, _itemHash);
bytes32 ethSignedMessageHash = getEthSignedMessageHash(messageHash);
return recoverSigner(ethSignedMessageHash, _signature) == owner();
}
function recoverSigner(
bytes32 _ethSignedMessageHash,
bytes memory _signature
) internal pure returns (address) {
require(_signature.length == 65, "invalid signature length");
bytes32 r;
bytes32 s;
uint8 v;
assembly {
r := mload(add(_signature, 32))
s := mload(add(_signature, 64))
v := byte(0, mload(add(_signature, 96)))
}
return ecrecover(_ethSignedMessageHash, v, r, s);
}
function isMintedForHash(bytes32 _itemHash) external view returns (bool) {
return _isItemMinted[_itemHash];
}
function hashOf(uint256 _id) external view returns (bytes32) {
return _hashOf[_id];
}
function royaltyInfo(uint256)
external
view
returns (address receiver, uint256 amount)
{
return (owner(), ROYALTY_FEE);
}
function tokensOfOwner(address _owner)
external
view
returns (uint256[] memory)
{
uint256 tokenCount = balanceOf(_owner);
if (tokenCount == 0) {
// Return an empty array
return new uint256[](0);
} else {
uint256[] memory result = new uint256[](tokenCount);
uint256 index;
for (index = 0; index < tokenCount; index++) {
result[index] = tokenOfOwnerByIndex(_owner, index);
}
return result;
}
}
function verificationRequester(bytes32 _itemHash)
external
view
returns (address)
{
return _verificationRequester[_itemHash];
}
function getClaimerAddress() external view returns (address) {
return _claimingAddress;
}
function getVerificationPrice() external view returns (uint256) {
return _verificationPrice;
}
function baseTokenURI() override public view returns (string memory) {
return _token_uri;
}
function contractURI() public pure returns (string memory) {
return "https://uniqly.com/api/nft-generator/";
}
// ----- PUBLIC METHODS ----- //
function payForVerification(bytes32 _itemHash) external {
require(!_isItemMinted[_itemHash], "Already minted");
require(
_verificationRequester[_itemHash] == address(0),
"Verification already requested"
);
require(
IERC20(_tokenForPaying).transferFrom(
msg.sender,
address(this),
_verificationPrice
)
);
_verificationRequester[_itemHash] = msg.sender;
}
function mintVerified(bytes32 _itemHash, bytes memory _signature) external {
require(
_verificationRequester[_itemHash] == msg.sender,
"Verification Requester mismatch"
);
require(!_isItemMinted[_itemHash], "Already minted");
require(
verifySignature(msg.sender, _itemHash, _signature),
"Signature mismatch"
);
_isItemMinted[_itemHash] = true;
_safeMint(msg.sender, _tokenNumber);
_hashOf[_tokenNumber] = _itemHash;
_tokenNumber++;
}
// ----- OWNERS METHODS ----- //
function setProvenanceHash(string memory _hash) external onlyOwner {
METADATA_PROVENANCE_HASH = _hash;
}
function editTokenUri(string memory _ttokenUri) external onlyOwner{
_token_uri = _ttokenUri;
}
function setTokenAddress(address _newAddress) external onlyOwner {
_tokenForPaying = _newAddress;
}
function editVireficationPrice(uint256 _newPrice) external onlyOwner {
_verificationPrice = _newPrice;
}
function editClaimingAdress(address _newAddress) external onlyOwner {
_claimingAddress = _newAddress;
}
function recoverERC20(address token) external onlyOwner {
uint256 val = IERC20(token).balanceOf(address(this));
require(val > 0, "Nothing to recover");
// use interface that not return value (USDT case)
Ierc20(token).transfer(owner(), val);
}
function receivedRoyalties(
address,
address _buyer,
uint256 _tokenId,
address _tokenPaid,
uint256 _amount
) external {
emit ReceivedRoyalties(owner(), _buyer, _tokenId, _tokenPaid, _amount);
}
event ReceivedRoyalties(
address indexed _royaltyRecipient,
address indexed _buyer,
uint256 indexed _tokenId,
address _tokenPaid,
uint256 _amount
);
} | setProvenanceHash | function setProvenanceHash(string memory _hash) external onlyOwner {
METADATA_PROVENANCE_HASH = _hash;
}
| // ----- OWNERS METHODS ----- // | LineComment | v0.8.6+commit.11564f7e | None | ipfs://8684d54a22c734896df6299361d52ced1d6d29a3d3f98e0413f94190e5a256b7 | {
"func_code_index": [
5573,
5693
]
} | 2,767 |
||
_goatgauds | contracts/goadgauds.sol | 0x5cebe5cde01ab154fb46b7984d6354da367bcbaf | Solidity | _goatgauds | contract _goatgauds is Delegated, ERC721EnumerableLite, PaymentSplitterMod {
using Strings for uint;
uint public MAX_ORDER = 2;
uint public MAX_SUPPLY = 2222;
uint public MAINSALE_PRICE = 0.125 ether;
uint public PRESALE_PRICE = 0.1 ether;
bool public isMintActive = false;
bool public isPresaleActive = false;
mapping(address=>uint) public accessList;
string private _tokenURIPrefix = '';
string private _tokenURISuffix = '';
address[] private addressList = [
0xF5c774b504C1D82fb59e3B826555D67033A13b01,
0x7Cf39e8D6F6f9F25E925Dad7EB371276231780d7,
0xC02Dd50b25364e747410730A1df9B72A92C3C68B,
0x286777D6ad08EbE395C377078a17a32c21564a8a,
0x00eCb19318d98ff57173Ac8EdFb7a5D90ba2005d,
0x2E169A7c3D8EBeC11D5b43Dade06Ac29FEf59cb3,
0x693B22BB92727Fb2a9a4D7e1b1D65B3E8168B774
];
uint[] private shareList = [
5,
5,
5,
5,
30,
25,
25
];
constructor()
Delegated()
ERC721B("Goat Gauds", "GG", 0)
PaymentSplitterMod( addressList, shareList ){
}
//public view
fallback() external payable {}
function tokenURI(uint tokenId) external view override returns (string memory) {
require(_exists(tokenId), "Query for nonexistent token");
return string(abi.encodePacked(_tokenURIPrefix, tokenId.toString(), _tokenURISuffix));
}
//public payable
function presale( uint quantity ) external payable {
require( isPresaleActive, "Presale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= PRESALE_PRICE * quantity, "Ether sent is not correct" );
require( accessList[msg.sender] > 0, "Not authorized" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
accessList[msg.sender] -= quantity;
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
function mint( uint quantity ) external payable {
require( isMintActive, "Sale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= MAINSALE_PRICE * quantity, "Ether sent is not correct" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
//delegated payable
function burnFrom( address owner, uint[] calldata tokenIds ) external payable onlyDelegates{
for(uint i; i < tokenIds.length; ++i ){
require( _exists( tokenIds[i] ), "Burn for nonexistent token" );
require( _owners[ tokenIds[i] ] == owner, "Owner mismatch" );
_burn( tokenIds[i] );
}
}
function mintTo(uint[] calldata quantity, address[] calldata recipient) external payable onlyDelegates{
require(quantity.length == recipient.length, "Must provide equal quantities and recipients" );
uint totalQuantity;
uint supply = totalSupply();
for(uint i; i < quantity.length; ++i){
totalQuantity += quantity[i];
}
require( supply + totalQuantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < recipient.length; ++i){
for(uint j; j < quantity[i]; ++j){
_mint( recipient[i], supply++ );
}
}
}
//delegated nonpayable
function resurrect( uint[] calldata tokenIds, address[] calldata recipients ) external onlyDelegates{
require(tokenIds.length == recipients.length, "Must provide equal tokenIds and recipients" );
address to;
uint tokenId;
address zero = address(0);
for(uint i; i < tokenIds.length; ++i ){
to = recipients[i];
require(recipients[i] != address(0), "resurrect to the zero address" );
tokenId = tokenIds[i];
require( !_exists( tokenId ), "can't resurrect existing token" );
_owners[tokenId] = to;
// Clear approvals
_approve(zero, tokenId);
emit Transfer(zero, to, tokenId);
}
}
function setAccessList(address[] calldata accounts, uint[] calldata quantities) external onlyDelegates{
require(accounts.length == quantities.length, "Must provide equal accounts and quantities" );
for(uint i; i < accounts.length; ++i){
accessList[ accounts[i] ] = quantities[i];
}
}
function setActive(bool isPresaleActive_, bool isMintActive_) external onlyDelegates{
require( isPresaleActive != isPresaleActive_ || isMintActive != isMintActive_, "New value matches old" );
isPresaleActive = isPresaleActive_;
isMintActive = isMintActive_;
}
function setBaseURI(string calldata newPrefix, string calldata newSuffix) external onlyDelegates{
_tokenURIPrefix = newPrefix;
_tokenURISuffix = newSuffix;
}
function setMax(uint maxOrder, uint maxSupply) external onlyDelegates{
require( MAX_ORDER != maxOrder || MAX_SUPPLY != maxSupply, "New value matches old" );
require(maxSupply >= totalSupply(), "Specified supply is lower than current balance" );
MAX_ORDER = maxOrder;
MAX_SUPPLY = maxSupply;
}
function setPrice(uint presalePrice, uint mainsalePrice ) external onlyDelegates{
require( PRESALE_PRICE != presalePrice || MAINSALE_PRICE != mainsalePrice, "New value matches old" );
PRESALE_PRICE = presalePrice;
MAINSALE_PRICE = mainsalePrice;
}
//owner
function addPayee(address account, uint256 shares_) external onlyOwner {
_addPayee(account, shares_);
}
function setPayee( uint index, address account, uint newShares ) external onlyOwner {
_setPayee(index, account, newShares);
}
//internal
function _burn(uint tokenId) internal override {
address curOwner = ERC721B.ownerOf(tokenId);
// Clear approvals
_approve(owner(), tokenId);
_owners[tokenId] = address(0);
emit Transfer(curOwner, address(0), tokenId);
}
function _mint(address to, uint tokenId) internal override {
_owners.push(to);
emit Transfer(address(0), to, tokenId);
}
} | //public view | LineComment | v0.8.7+commit.e28d00a7 | MIT | ipfs://efc6e995f9113dd9e7553b8bfdbd720d3ba65ba918ce8660b957b3e9434d2079 | {
"func_code_index": [
1110,
1143
]
} | 2,768 |
||||
_goatgauds | contracts/goadgauds.sol | 0x5cebe5cde01ab154fb46b7984d6354da367bcbaf | Solidity | _goatgauds | contract _goatgauds is Delegated, ERC721EnumerableLite, PaymentSplitterMod {
using Strings for uint;
uint public MAX_ORDER = 2;
uint public MAX_SUPPLY = 2222;
uint public MAINSALE_PRICE = 0.125 ether;
uint public PRESALE_PRICE = 0.1 ether;
bool public isMintActive = false;
bool public isPresaleActive = false;
mapping(address=>uint) public accessList;
string private _tokenURIPrefix = '';
string private _tokenURISuffix = '';
address[] private addressList = [
0xF5c774b504C1D82fb59e3B826555D67033A13b01,
0x7Cf39e8D6F6f9F25E925Dad7EB371276231780d7,
0xC02Dd50b25364e747410730A1df9B72A92C3C68B,
0x286777D6ad08EbE395C377078a17a32c21564a8a,
0x00eCb19318d98ff57173Ac8EdFb7a5D90ba2005d,
0x2E169A7c3D8EBeC11D5b43Dade06Ac29FEf59cb3,
0x693B22BB92727Fb2a9a4D7e1b1D65B3E8168B774
];
uint[] private shareList = [
5,
5,
5,
5,
30,
25,
25
];
constructor()
Delegated()
ERC721B("Goat Gauds", "GG", 0)
PaymentSplitterMod( addressList, shareList ){
}
//public view
fallback() external payable {}
function tokenURI(uint tokenId) external view override returns (string memory) {
require(_exists(tokenId), "Query for nonexistent token");
return string(abi.encodePacked(_tokenURIPrefix, tokenId.toString(), _tokenURISuffix));
}
//public payable
function presale( uint quantity ) external payable {
require( isPresaleActive, "Presale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= PRESALE_PRICE * quantity, "Ether sent is not correct" );
require( accessList[msg.sender] > 0, "Not authorized" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
accessList[msg.sender] -= quantity;
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
function mint( uint quantity ) external payable {
require( isMintActive, "Sale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= MAINSALE_PRICE * quantity, "Ether sent is not correct" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
//delegated payable
function burnFrom( address owner, uint[] calldata tokenIds ) external payable onlyDelegates{
for(uint i; i < tokenIds.length; ++i ){
require( _exists( tokenIds[i] ), "Burn for nonexistent token" );
require( _owners[ tokenIds[i] ] == owner, "Owner mismatch" );
_burn( tokenIds[i] );
}
}
function mintTo(uint[] calldata quantity, address[] calldata recipient) external payable onlyDelegates{
require(quantity.length == recipient.length, "Must provide equal quantities and recipients" );
uint totalQuantity;
uint supply = totalSupply();
for(uint i; i < quantity.length; ++i){
totalQuantity += quantity[i];
}
require( supply + totalQuantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < recipient.length; ++i){
for(uint j; j < quantity[i]; ++j){
_mint( recipient[i], supply++ );
}
}
}
//delegated nonpayable
function resurrect( uint[] calldata tokenIds, address[] calldata recipients ) external onlyDelegates{
require(tokenIds.length == recipients.length, "Must provide equal tokenIds and recipients" );
address to;
uint tokenId;
address zero = address(0);
for(uint i; i < tokenIds.length; ++i ){
to = recipients[i];
require(recipients[i] != address(0), "resurrect to the zero address" );
tokenId = tokenIds[i];
require( !_exists( tokenId ), "can't resurrect existing token" );
_owners[tokenId] = to;
// Clear approvals
_approve(zero, tokenId);
emit Transfer(zero, to, tokenId);
}
}
function setAccessList(address[] calldata accounts, uint[] calldata quantities) external onlyDelegates{
require(accounts.length == quantities.length, "Must provide equal accounts and quantities" );
for(uint i; i < accounts.length; ++i){
accessList[ accounts[i] ] = quantities[i];
}
}
function setActive(bool isPresaleActive_, bool isMintActive_) external onlyDelegates{
require( isPresaleActive != isPresaleActive_ || isMintActive != isMintActive_, "New value matches old" );
isPresaleActive = isPresaleActive_;
isMintActive = isMintActive_;
}
function setBaseURI(string calldata newPrefix, string calldata newSuffix) external onlyDelegates{
_tokenURIPrefix = newPrefix;
_tokenURISuffix = newSuffix;
}
function setMax(uint maxOrder, uint maxSupply) external onlyDelegates{
require( MAX_ORDER != maxOrder || MAX_SUPPLY != maxSupply, "New value matches old" );
require(maxSupply >= totalSupply(), "Specified supply is lower than current balance" );
MAX_ORDER = maxOrder;
MAX_SUPPLY = maxSupply;
}
function setPrice(uint presalePrice, uint mainsalePrice ) external onlyDelegates{
require( PRESALE_PRICE != presalePrice || MAINSALE_PRICE != mainsalePrice, "New value matches old" );
PRESALE_PRICE = presalePrice;
MAINSALE_PRICE = mainsalePrice;
}
//owner
function addPayee(address account, uint256 shares_) external onlyOwner {
_addPayee(account, shares_);
}
function setPayee( uint index, address account, uint newShares ) external onlyOwner {
_setPayee(index, account, newShares);
}
//internal
function _burn(uint tokenId) internal override {
address curOwner = ERC721B.ownerOf(tokenId);
// Clear approvals
_approve(owner(), tokenId);
_owners[tokenId] = address(0);
emit Transfer(curOwner, address(0), tokenId);
}
function _mint(address to, uint tokenId) internal override {
_owners.push(to);
emit Transfer(address(0), to, tokenId);
}
} | presale | function presale( uint quantity ) external payable {
require( isPresaleActive, "Presale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= PRESALE_PRICE * quantity, "Ether sent is not correct" );
require( accessList[msg.sender] > 0, "Not authorized" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
accessList[msg.sender] -= quantity;
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
| //public payable | LineComment | v0.8.7+commit.e28d00a7 | MIT | ipfs://efc6e995f9113dd9e7553b8bfdbd720d3ba65ba918ce8660b957b3e9434d2079 | {
"func_code_index": [
1414,
2025
]
} | 2,769 |
||
_goatgauds | contracts/goadgauds.sol | 0x5cebe5cde01ab154fb46b7984d6354da367bcbaf | Solidity | _goatgauds | contract _goatgauds is Delegated, ERC721EnumerableLite, PaymentSplitterMod {
using Strings for uint;
uint public MAX_ORDER = 2;
uint public MAX_SUPPLY = 2222;
uint public MAINSALE_PRICE = 0.125 ether;
uint public PRESALE_PRICE = 0.1 ether;
bool public isMintActive = false;
bool public isPresaleActive = false;
mapping(address=>uint) public accessList;
string private _tokenURIPrefix = '';
string private _tokenURISuffix = '';
address[] private addressList = [
0xF5c774b504C1D82fb59e3B826555D67033A13b01,
0x7Cf39e8D6F6f9F25E925Dad7EB371276231780d7,
0xC02Dd50b25364e747410730A1df9B72A92C3C68B,
0x286777D6ad08EbE395C377078a17a32c21564a8a,
0x00eCb19318d98ff57173Ac8EdFb7a5D90ba2005d,
0x2E169A7c3D8EBeC11D5b43Dade06Ac29FEf59cb3,
0x693B22BB92727Fb2a9a4D7e1b1D65B3E8168B774
];
uint[] private shareList = [
5,
5,
5,
5,
30,
25,
25
];
constructor()
Delegated()
ERC721B("Goat Gauds", "GG", 0)
PaymentSplitterMod( addressList, shareList ){
}
//public view
fallback() external payable {}
function tokenURI(uint tokenId) external view override returns (string memory) {
require(_exists(tokenId), "Query for nonexistent token");
return string(abi.encodePacked(_tokenURIPrefix, tokenId.toString(), _tokenURISuffix));
}
//public payable
function presale( uint quantity ) external payable {
require( isPresaleActive, "Presale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= PRESALE_PRICE * quantity, "Ether sent is not correct" );
require( accessList[msg.sender] > 0, "Not authorized" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
accessList[msg.sender] -= quantity;
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
function mint( uint quantity ) external payable {
require( isMintActive, "Sale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= MAINSALE_PRICE * quantity, "Ether sent is not correct" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
//delegated payable
function burnFrom( address owner, uint[] calldata tokenIds ) external payable onlyDelegates{
for(uint i; i < tokenIds.length; ++i ){
require( _exists( tokenIds[i] ), "Burn for nonexistent token" );
require( _owners[ tokenIds[i] ] == owner, "Owner mismatch" );
_burn( tokenIds[i] );
}
}
function mintTo(uint[] calldata quantity, address[] calldata recipient) external payable onlyDelegates{
require(quantity.length == recipient.length, "Must provide equal quantities and recipients" );
uint totalQuantity;
uint supply = totalSupply();
for(uint i; i < quantity.length; ++i){
totalQuantity += quantity[i];
}
require( supply + totalQuantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < recipient.length; ++i){
for(uint j; j < quantity[i]; ++j){
_mint( recipient[i], supply++ );
}
}
}
//delegated nonpayable
function resurrect( uint[] calldata tokenIds, address[] calldata recipients ) external onlyDelegates{
require(tokenIds.length == recipients.length, "Must provide equal tokenIds and recipients" );
address to;
uint tokenId;
address zero = address(0);
for(uint i; i < tokenIds.length; ++i ){
to = recipients[i];
require(recipients[i] != address(0), "resurrect to the zero address" );
tokenId = tokenIds[i];
require( !_exists( tokenId ), "can't resurrect existing token" );
_owners[tokenId] = to;
// Clear approvals
_approve(zero, tokenId);
emit Transfer(zero, to, tokenId);
}
}
function setAccessList(address[] calldata accounts, uint[] calldata quantities) external onlyDelegates{
require(accounts.length == quantities.length, "Must provide equal accounts and quantities" );
for(uint i; i < accounts.length; ++i){
accessList[ accounts[i] ] = quantities[i];
}
}
function setActive(bool isPresaleActive_, bool isMintActive_) external onlyDelegates{
require( isPresaleActive != isPresaleActive_ || isMintActive != isMintActive_, "New value matches old" );
isPresaleActive = isPresaleActive_;
isMintActive = isMintActive_;
}
function setBaseURI(string calldata newPrefix, string calldata newSuffix) external onlyDelegates{
_tokenURIPrefix = newPrefix;
_tokenURISuffix = newSuffix;
}
function setMax(uint maxOrder, uint maxSupply) external onlyDelegates{
require( MAX_ORDER != maxOrder || MAX_SUPPLY != maxSupply, "New value matches old" );
require(maxSupply >= totalSupply(), "Specified supply is lower than current balance" );
MAX_ORDER = maxOrder;
MAX_SUPPLY = maxSupply;
}
function setPrice(uint presalePrice, uint mainsalePrice ) external onlyDelegates{
require( PRESALE_PRICE != presalePrice || MAINSALE_PRICE != mainsalePrice, "New value matches old" );
PRESALE_PRICE = presalePrice;
MAINSALE_PRICE = mainsalePrice;
}
//owner
function addPayee(address account, uint256 shares_) external onlyOwner {
_addPayee(account, shares_);
}
function setPayee( uint index, address account, uint newShares ) external onlyOwner {
_setPayee(index, account, newShares);
}
//internal
function _burn(uint tokenId) internal override {
address curOwner = ERC721B.ownerOf(tokenId);
// Clear approvals
_approve(owner(), tokenId);
_owners[tokenId] = address(0);
emit Transfer(curOwner, address(0), tokenId);
}
function _mint(address to, uint tokenId) internal override {
_owners.push(to);
emit Transfer(address(0), to, tokenId);
}
} | burnFrom | function burnFrom( address owner, uint[] calldata tokenIds ) external payable onlyDelegates{
for(uint i; i < tokenIds.length; ++i ){
require( _exists( tokenIds[i] ), "Burn for nonexistent token" );
require( _owners[ tokenIds[i] ] == owner, "Owner mismatch" );
_burn( tokenIds[i] );
}
}
| //delegated payable | LineComment | v0.8.7+commit.e28d00a7 | MIT | ipfs://efc6e995f9113dd9e7553b8bfdbd720d3ba65ba918ce8660b957b3e9434d2079 | {
"func_code_index": [
2546,
2868
]
} | 2,770 |
||
_goatgauds | contracts/goadgauds.sol | 0x5cebe5cde01ab154fb46b7984d6354da367bcbaf | Solidity | _goatgauds | contract _goatgauds is Delegated, ERC721EnumerableLite, PaymentSplitterMod {
using Strings for uint;
uint public MAX_ORDER = 2;
uint public MAX_SUPPLY = 2222;
uint public MAINSALE_PRICE = 0.125 ether;
uint public PRESALE_PRICE = 0.1 ether;
bool public isMintActive = false;
bool public isPresaleActive = false;
mapping(address=>uint) public accessList;
string private _tokenURIPrefix = '';
string private _tokenURISuffix = '';
address[] private addressList = [
0xF5c774b504C1D82fb59e3B826555D67033A13b01,
0x7Cf39e8D6F6f9F25E925Dad7EB371276231780d7,
0xC02Dd50b25364e747410730A1df9B72A92C3C68B,
0x286777D6ad08EbE395C377078a17a32c21564a8a,
0x00eCb19318d98ff57173Ac8EdFb7a5D90ba2005d,
0x2E169A7c3D8EBeC11D5b43Dade06Ac29FEf59cb3,
0x693B22BB92727Fb2a9a4D7e1b1D65B3E8168B774
];
uint[] private shareList = [
5,
5,
5,
5,
30,
25,
25
];
constructor()
Delegated()
ERC721B("Goat Gauds", "GG", 0)
PaymentSplitterMod( addressList, shareList ){
}
//public view
fallback() external payable {}
function tokenURI(uint tokenId) external view override returns (string memory) {
require(_exists(tokenId), "Query for nonexistent token");
return string(abi.encodePacked(_tokenURIPrefix, tokenId.toString(), _tokenURISuffix));
}
//public payable
function presale( uint quantity ) external payable {
require( isPresaleActive, "Presale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= PRESALE_PRICE * quantity, "Ether sent is not correct" );
require( accessList[msg.sender] > 0, "Not authorized" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
accessList[msg.sender] -= quantity;
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
function mint( uint quantity ) external payable {
require( isMintActive, "Sale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= MAINSALE_PRICE * quantity, "Ether sent is not correct" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
//delegated payable
function burnFrom( address owner, uint[] calldata tokenIds ) external payable onlyDelegates{
for(uint i; i < tokenIds.length; ++i ){
require( _exists( tokenIds[i] ), "Burn for nonexistent token" );
require( _owners[ tokenIds[i] ] == owner, "Owner mismatch" );
_burn( tokenIds[i] );
}
}
function mintTo(uint[] calldata quantity, address[] calldata recipient) external payable onlyDelegates{
require(quantity.length == recipient.length, "Must provide equal quantities and recipients" );
uint totalQuantity;
uint supply = totalSupply();
for(uint i; i < quantity.length; ++i){
totalQuantity += quantity[i];
}
require( supply + totalQuantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < recipient.length; ++i){
for(uint j; j < quantity[i]; ++j){
_mint( recipient[i], supply++ );
}
}
}
//delegated nonpayable
function resurrect( uint[] calldata tokenIds, address[] calldata recipients ) external onlyDelegates{
require(tokenIds.length == recipients.length, "Must provide equal tokenIds and recipients" );
address to;
uint tokenId;
address zero = address(0);
for(uint i; i < tokenIds.length; ++i ){
to = recipients[i];
require(recipients[i] != address(0), "resurrect to the zero address" );
tokenId = tokenIds[i];
require( !_exists( tokenId ), "can't resurrect existing token" );
_owners[tokenId] = to;
// Clear approvals
_approve(zero, tokenId);
emit Transfer(zero, to, tokenId);
}
}
function setAccessList(address[] calldata accounts, uint[] calldata quantities) external onlyDelegates{
require(accounts.length == quantities.length, "Must provide equal accounts and quantities" );
for(uint i; i < accounts.length; ++i){
accessList[ accounts[i] ] = quantities[i];
}
}
function setActive(bool isPresaleActive_, bool isMintActive_) external onlyDelegates{
require( isPresaleActive != isPresaleActive_ || isMintActive != isMintActive_, "New value matches old" );
isPresaleActive = isPresaleActive_;
isMintActive = isMintActive_;
}
function setBaseURI(string calldata newPrefix, string calldata newSuffix) external onlyDelegates{
_tokenURIPrefix = newPrefix;
_tokenURISuffix = newSuffix;
}
function setMax(uint maxOrder, uint maxSupply) external onlyDelegates{
require( MAX_ORDER != maxOrder || MAX_SUPPLY != maxSupply, "New value matches old" );
require(maxSupply >= totalSupply(), "Specified supply is lower than current balance" );
MAX_ORDER = maxOrder;
MAX_SUPPLY = maxSupply;
}
function setPrice(uint presalePrice, uint mainsalePrice ) external onlyDelegates{
require( PRESALE_PRICE != presalePrice || MAINSALE_PRICE != mainsalePrice, "New value matches old" );
PRESALE_PRICE = presalePrice;
MAINSALE_PRICE = mainsalePrice;
}
//owner
function addPayee(address account, uint256 shares_) external onlyOwner {
_addPayee(account, shares_);
}
function setPayee( uint index, address account, uint newShares ) external onlyOwner {
_setPayee(index, account, newShares);
}
//internal
function _burn(uint tokenId) internal override {
address curOwner = ERC721B.ownerOf(tokenId);
// Clear approvals
_approve(owner(), tokenId);
_owners[tokenId] = address(0);
emit Transfer(curOwner, address(0), tokenId);
}
function _mint(address to, uint tokenId) internal override {
_owners.push(to);
emit Transfer(address(0), to, tokenId);
}
} | resurrect | function resurrect( uint[] calldata tokenIds, address[] calldata recipients ) external onlyDelegates{
require(tokenIds.length == recipients.length, "Must provide equal tokenIds and recipients" );
address to;
uint tokenId;
address zero = address(0);
for(uint i; i < tokenIds.length; ++i ){
to = recipients[i];
require(recipients[i] != address(0), "resurrect to the zero address" );
tokenId = tokenIds[i];
require( !_exists( tokenId ), "can't resurrect existing token" );
_owners[tokenId] = to;
// Clear approvals
_approve(zero, tokenId);
emit Transfer(zero, to, tokenId);
}
}
| //delegated nonpayable | LineComment | v0.8.7+commit.e28d00a7 | MIT | ipfs://efc6e995f9113dd9e7553b8bfdbd720d3ba65ba918ce8660b957b3e9434d2079 | {
"func_code_index": [
3492,
4174
]
} | 2,771 |
||
_goatgauds | contracts/goadgauds.sol | 0x5cebe5cde01ab154fb46b7984d6354da367bcbaf | Solidity | _goatgauds | contract _goatgauds is Delegated, ERC721EnumerableLite, PaymentSplitterMod {
using Strings for uint;
uint public MAX_ORDER = 2;
uint public MAX_SUPPLY = 2222;
uint public MAINSALE_PRICE = 0.125 ether;
uint public PRESALE_PRICE = 0.1 ether;
bool public isMintActive = false;
bool public isPresaleActive = false;
mapping(address=>uint) public accessList;
string private _tokenURIPrefix = '';
string private _tokenURISuffix = '';
address[] private addressList = [
0xF5c774b504C1D82fb59e3B826555D67033A13b01,
0x7Cf39e8D6F6f9F25E925Dad7EB371276231780d7,
0xC02Dd50b25364e747410730A1df9B72A92C3C68B,
0x286777D6ad08EbE395C377078a17a32c21564a8a,
0x00eCb19318d98ff57173Ac8EdFb7a5D90ba2005d,
0x2E169A7c3D8EBeC11D5b43Dade06Ac29FEf59cb3,
0x693B22BB92727Fb2a9a4D7e1b1D65B3E8168B774
];
uint[] private shareList = [
5,
5,
5,
5,
30,
25,
25
];
constructor()
Delegated()
ERC721B("Goat Gauds", "GG", 0)
PaymentSplitterMod( addressList, shareList ){
}
//public view
fallback() external payable {}
function tokenURI(uint tokenId) external view override returns (string memory) {
require(_exists(tokenId), "Query for nonexistent token");
return string(abi.encodePacked(_tokenURIPrefix, tokenId.toString(), _tokenURISuffix));
}
//public payable
function presale( uint quantity ) external payable {
require( isPresaleActive, "Presale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= PRESALE_PRICE * quantity, "Ether sent is not correct" );
require( accessList[msg.sender] > 0, "Not authorized" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
accessList[msg.sender] -= quantity;
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
function mint( uint quantity ) external payable {
require( isMintActive, "Sale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= MAINSALE_PRICE * quantity, "Ether sent is not correct" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
//delegated payable
function burnFrom( address owner, uint[] calldata tokenIds ) external payable onlyDelegates{
for(uint i; i < tokenIds.length; ++i ){
require( _exists( tokenIds[i] ), "Burn for nonexistent token" );
require( _owners[ tokenIds[i] ] == owner, "Owner mismatch" );
_burn( tokenIds[i] );
}
}
function mintTo(uint[] calldata quantity, address[] calldata recipient) external payable onlyDelegates{
require(quantity.length == recipient.length, "Must provide equal quantities and recipients" );
uint totalQuantity;
uint supply = totalSupply();
for(uint i; i < quantity.length; ++i){
totalQuantity += quantity[i];
}
require( supply + totalQuantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < recipient.length; ++i){
for(uint j; j < quantity[i]; ++j){
_mint( recipient[i], supply++ );
}
}
}
//delegated nonpayable
function resurrect( uint[] calldata tokenIds, address[] calldata recipients ) external onlyDelegates{
require(tokenIds.length == recipients.length, "Must provide equal tokenIds and recipients" );
address to;
uint tokenId;
address zero = address(0);
for(uint i; i < tokenIds.length; ++i ){
to = recipients[i];
require(recipients[i] != address(0), "resurrect to the zero address" );
tokenId = tokenIds[i];
require( !_exists( tokenId ), "can't resurrect existing token" );
_owners[tokenId] = to;
// Clear approvals
_approve(zero, tokenId);
emit Transfer(zero, to, tokenId);
}
}
function setAccessList(address[] calldata accounts, uint[] calldata quantities) external onlyDelegates{
require(accounts.length == quantities.length, "Must provide equal accounts and quantities" );
for(uint i; i < accounts.length; ++i){
accessList[ accounts[i] ] = quantities[i];
}
}
function setActive(bool isPresaleActive_, bool isMintActive_) external onlyDelegates{
require( isPresaleActive != isPresaleActive_ || isMintActive != isMintActive_, "New value matches old" );
isPresaleActive = isPresaleActive_;
isMintActive = isMintActive_;
}
function setBaseURI(string calldata newPrefix, string calldata newSuffix) external onlyDelegates{
_tokenURIPrefix = newPrefix;
_tokenURISuffix = newSuffix;
}
function setMax(uint maxOrder, uint maxSupply) external onlyDelegates{
require( MAX_ORDER != maxOrder || MAX_SUPPLY != maxSupply, "New value matches old" );
require(maxSupply >= totalSupply(), "Specified supply is lower than current balance" );
MAX_ORDER = maxOrder;
MAX_SUPPLY = maxSupply;
}
function setPrice(uint presalePrice, uint mainsalePrice ) external onlyDelegates{
require( PRESALE_PRICE != presalePrice || MAINSALE_PRICE != mainsalePrice, "New value matches old" );
PRESALE_PRICE = presalePrice;
MAINSALE_PRICE = mainsalePrice;
}
//owner
function addPayee(address account, uint256 shares_) external onlyOwner {
_addPayee(account, shares_);
}
function setPayee( uint index, address account, uint newShares ) external onlyOwner {
_setPayee(index, account, newShares);
}
//internal
function _burn(uint tokenId) internal override {
address curOwner = ERC721B.ownerOf(tokenId);
// Clear approvals
_approve(owner(), tokenId);
_owners[tokenId] = address(0);
emit Transfer(curOwner, address(0), tokenId);
}
function _mint(address to, uint tokenId) internal override {
_owners.push(to);
emit Transfer(address(0), to, tokenId);
}
} | addPayee | function addPayee(address account, uint256 shares_) external onlyOwner {
_addPayee(account, shares_);
}
| //owner | LineComment | v0.8.7+commit.e28d00a7 | MIT | ipfs://efc6e995f9113dd9e7553b8bfdbd720d3ba65ba918ce8660b957b3e9434d2079 | {
"func_code_index": [
5555,
5669
]
} | 2,772 |
||
_goatgauds | contracts/goadgauds.sol | 0x5cebe5cde01ab154fb46b7984d6354da367bcbaf | Solidity | _goatgauds | contract _goatgauds is Delegated, ERC721EnumerableLite, PaymentSplitterMod {
using Strings for uint;
uint public MAX_ORDER = 2;
uint public MAX_SUPPLY = 2222;
uint public MAINSALE_PRICE = 0.125 ether;
uint public PRESALE_PRICE = 0.1 ether;
bool public isMintActive = false;
bool public isPresaleActive = false;
mapping(address=>uint) public accessList;
string private _tokenURIPrefix = '';
string private _tokenURISuffix = '';
address[] private addressList = [
0xF5c774b504C1D82fb59e3B826555D67033A13b01,
0x7Cf39e8D6F6f9F25E925Dad7EB371276231780d7,
0xC02Dd50b25364e747410730A1df9B72A92C3C68B,
0x286777D6ad08EbE395C377078a17a32c21564a8a,
0x00eCb19318d98ff57173Ac8EdFb7a5D90ba2005d,
0x2E169A7c3D8EBeC11D5b43Dade06Ac29FEf59cb3,
0x693B22BB92727Fb2a9a4D7e1b1D65B3E8168B774
];
uint[] private shareList = [
5,
5,
5,
5,
30,
25,
25
];
constructor()
Delegated()
ERC721B("Goat Gauds", "GG", 0)
PaymentSplitterMod( addressList, shareList ){
}
//public view
fallback() external payable {}
function tokenURI(uint tokenId) external view override returns (string memory) {
require(_exists(tokenId), "Query for nonexistent token");
return string(abi.encodePacked(_tokenURIPrefix, tokenId.toString(), _tokenURISuffix));
}
//public payable
function presale( uint quantity ) external payable {
require( isPresaleActive, "Presale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= PRESALE_PRICE * quantity, "Ether sent is not correct" );
require( accessList[msg.sender] > 0, "Not authorized" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
accessList[msg.sender] -= quantity;
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
function mint( uint quantity ) external payable {
require( isMintActive, "Sale is not active" );
require( quantity <= MAX_ORDER, "Order too big" );
require( msg.value >= MAINSALE_PRICE * quantity, "Ether sent is not correct" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < quantity; ++i){
_mint( msg.sender, supply++ );
}
}
//delegated payable
function burnFrom( address owner, uint[] calldata tokenIds ) external payable onlyDelegates{
for(uint i; i < tokenIds.length; ++i ){
require( _exists( tokenIds[i] ), "Burn for nonexistent token" );
require( _owners[ tokenIds[i] ] == owner, "Owner mismatch" );
_burn( tokenIds[i] );
}
}
function mintTo(uint[] calldata quantity, address[] calldata recipient) external payable onlyDelegates{
require(quantity.length == recipient.length, "Must provide equal quantities and recipients" );
uint totalQuantity;
uint supply = totalSupply();
for(uint i; i < quantity.length; ++i){
totalQuantity += quantity[i];
}
require( supply + totalQuantity <= MAX_SUPPLY, "Mint/order exceeds supply" );
for(uint i; i < recipient.length; ++i){
for(uint j; j < quantity[i]; ++j){
_mint( recipient[i], supply++ );
}
}
}
//delegated nonpayable
function resurrect( uint[] calldata tokenIds, address[] calldata recipients ) external onlyDelegates{
require(tokenIds.length == recipients.length, "Must provide equal tokenIds and recipients" );
address to;
uint tokenId;
address zero = address(0);
for(uint i; i < tokenIds.length; ++i ){
to = recipients[i];
require(recipients[i] != address(0), "resurrect to the zero address" );
tokenId = tokenIds[i];
require( !_exists( tokenId ), "can't resurrect existing token" );
_owners[tokenId] = to;
// Clear approvals
_approve(zero, tokenId);
emit Transfer(zero, to, tokenId);
}
}
function setAccessList(address[] calldata accounts, uint[] calldata quantities) external onlyDelegates{
require(accounts.length == quantities.length, "Must provide equal accounts and quantities" );
for(uint i; i < accounts.length; ++i){
accessList[ accounts[i] ] = quantities[i];
}
}
function setActive(bool isPresaleActive_, bool isMintActive_) external onlyDelegates{
require( isPresaleActive != isPresaleActive_ || isMintActive != isMintActive_, "New value matches old" );
isPresaleActive = isPresaleActive_;
isMintActive = isMintActive_;
}
function setBaseURI(string calldata newPrefix, string calldata newSuffix) external onlyDelegates{
_tokenURIPrefix = newPrefix;
_tokenURISuffix = newSuffix;
}
function setMax(uint maxOrder, uint maxSupply) external onlyDelegates{
require( MAX_ORDER != maxOrder || MAX_SUPPLY != maxSupply, "New value matches old" );
require(maxSupply >= totalSupply(), "Specified supply is lower than current balance" );
MAX_ORDER = maxOrder;
MAX_SUPPLY = maxSupply;
}
function setPrice(uint presalePrice, uint mainsalePrice ) external onlyDelegates{
require( PRESALE_PRICE != presalePrice || MAINSALE_PRICE != mainsalePrice, "New value matches old" );
PRESALE_PRICE = presalePrice;
MAINSALE_PRICE = mainsalePrice;
}
//owner
function addPayee(address account, uint256 shares_) external onlyOwner {
_addPayee(account, shares_);
}
function setPayee( uint index, address account, uint newShares ) external onlyOwner {
_setPayee(index, account, newShares);
}
//internal
function _burn(uint tokenId) internal override {
address curOwner = ERC721B.ownerOf(tokenId);
// Clear approvals
_approve(owner(), tokenId);
_owners[tokenId] = address(0);
emit Transfer(curOwner, address(0), tokenId);
}
function _mint(address to, uint tokenId) internal override {
_owners.push(to);
emit Transfer(address(0), to, tokenId);
}
} | _burn | function _burn(uint tokenId) internal override {
address curOwner = ERC721B.ownerOf(tokenId);
// Clear approvals
_approve(owner(), tokenId);
_owners[tokenId] = address(0);
emit Transfer(curOwner, address(0), tokenId);
}
| //internal | LineComment | v0.8.7+commit.e28d00a7 | MIT | ipfs://efc6e995f9113dd9e7553b8bfdbd720d3ba65ba918ce8660b957b3e9434d2079 | {
"func_code_index": [
5827,
6079
]
} | 2,773 |
||
Crowdsale | Crowdsale.sol | 0x3c047c238fd1dc6cb23317f5e533f35c57059ee6 | Solidity | Crowdsale | contract Crowdsale {
using SafeMath for uint256;
// uint256 durationInMinutes;
// address where funds are collected
address public wallet;
// token address
address public addressOfTokenUsedAsReward;
uint256 public price = 1818;
token tokenReward;
// mapping (address => uint) public contributions;
// start and end timestamps where investments are allowed (both inclusive)
// uint256 public startTime;
// uint256 public endTime;
// amount of raised money in wei
uint256 public weiRaised;
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param beneficiary who got the tokens
* @param value weis paid for purchase
* @param amount amount of tokens purchased
*/
event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);
function Crowdsale() {
//You will change this to your wallet where you need the ETH
wallet = 0x5d467Dfc5e3FcA3ea4bd6C312275ca930d2f3E19;
// durationInMinutes = _durationInMinutes;
//Here will come the checksum address we got
addressOfTokenUsedAsReward = 0xB6eC8C3a347f66a3d7C4F39D6DD68A422E69E81d ;
tokenReward = token(addressOfTokenUsedAsReward);
}
bool public started = true;
function startSale(){
if (msg.sender != wallet) throw;
started = true;
}
function stopSale(){
if(msg.sender != wallet) throw;
started = false;
}
function setPrice(uint256 _price){
if(msg.sender != wallet) throw;
price = _price;
}
function changeWallet(address _wallet){
if(msg.sender != wallet) throw;
wallet = _wallet;
}
function changeTokenReward(address _token){
if(msg.sender!=wallet) throw;
tokenReward = token(_token);
addressOfTokenUsedAsReward = _token;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender,"");
}
// low level token purchase function
function buyTokens(address beneficiary, bytes32 promoCode) payable {
require(beneficiary != 0x0);
require(validPurchase());
uint256 weiAmount = msg.value;
// if(weiAmount < 10**16) throw;
// if(weiAmount > 50*10**18) throw;
// calculate token amount to be sent
uint256 tokens = (weiAmount) * price;//weiamount * price
if (promoCode == "ILOVEICOBUFFER")
tokens = weiAmount * 2015;
// uint256 tokens = (weiAmount/10**(18-decimals)) * price;//weiamount * price
// update state
weiRaised = weiRaised.add(weiAmount);
// if(contributions[msg.sender].add(weiAmount)>10*10**18) throw;
// contributions[msg.sender] = contributions[msg.sender].add(weiAmount);
tokenReward.transfer(beneficiary, tokens);
TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
forwardFunds();
}
// send ether to the fund collection wallet
// override to create custom fund forwarding mechanisms
function forwardFunds() internal {
// wallet.transfer(msg.value);
if (!wallet.send(msg.value)) {
throw;
}
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = started;
bool nonZeroPurchase = msg.value != 0;
return withinPeriod && nonZeroPurchase;
}
function withdrawTokens(uint256 _amount) {
if(msg.sender!=wallet) throw;
tokenReward.transfer(wallet,_amount);
}
} | function () payable {
buyTokens(msg.sender,"");
}
| // fallback function can be used to buy tokens | LineComment | v0.4.23+commit.124ca40d | bzzr://0a86b02a41be51d27c341dd592d389da93eabf168d279edbf725d4aa32af6de1 | {
"func_code_index": [
1929,
1989
]
} | 2,774 |
||||
Crowdsale | Crowdsale.sol | 0x3c047c238fd1dc6cb23317f5e533f35c57059ee6 | Solidity | Crowdsale | contract Crowdsale {
using SafeMath for uint256;
// uint256 durationInMinutes;
// address where funds are collected
address public wallet;
// token address
address public addressOfTokenUsedAsReward;
uint256 public price = 1818;
token tokenReward;
// mapping (address => uint) public contributions;
// start and end timestamps where investments are allowed (both inclusive)
// uint256 public startTime;
// uint256 public endTime;
// amount of raised money in wei
uint256 public weiRaised;
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param beneficiary who got the tokens
* @param value weis paid for purchase
* @param amount amount of tokens purchased
*/
event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);
function Crowdsale() {
//You will change this to your wallet where you need the ETH
wallet = 0x5d467Dfc5e3FcA3ea4bd6C312275ca930d2f3E19;
// durationInMinutes = _durationInMinutes;
//Here will come the checksum address we got
addressOfTokenUsedAsReward = 0xB6eC8C3a347f66a3d7C4F39D6DD68A422E69E81d ;
tokenReward = token(addressOfTokenUsedAsReward);
}
bool public started = true;
function startSale(){
if (msg.sender != wallet) throw;
started = true;
}
function stopSale(){
if(msg.sender != wallet) throw;
started = false;
}
function setPrice(uint256 _price){
if(msg.sender != wallet) throw;
price = _price;
}
function changeWallet(address _wallet){
if(msg.sender != wallet) throw;
wallet = _wallet;
}
function changeTokenReward(address _token){
if(msg.sender!=wallet) throw;
tokenReward = token(_token);
addressOfTokenUsedAsReward = _token;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender,"");
}
// low level token purchase function
function buyTokens(address beneficiary, bytes32 promoCode) payable {
require(beneficiary != 0x0);
require(validPurchase());
uint256 weiAmount = msg.value;
// if(weiAmount < 10**16) throw;
// if(weiAmount > 50*10**18) throw;
// calculate token amount to be sent
uint256 tokens = (weiAmount) * price;//weiamount * price
if (promoCode == "ILOVEICOBUFFER")
tokens = weiAmount * 2015;
// uint256 tokens = (weiAmount/10**(18-decimals)) * price;//weiamount * price
// update state
weiRaised = weiRaised.add(weiAmount);
// if(contributions[msg.sender].add(weiAmount)>10*10**18) throw;
// contributions[msg.sender] = contributions[msg.sender].add(weiAmount);
tokenReward.transfer(beneficiary, tokens);
TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
forwardFunds();
}
// send ether to the fund collection wallet
// override to create custom fund forwarding mechanisms
function forwardFunds() internal {
// wallet.transfer(msg.value);
if (!wallet.send(msg.value)) {
throw;
}
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = started;
bool nonZeroPurchase = msg.value != 0;
return withinPeriod && nonZeroPurchase;
}
function withdrawTokens(uint256 _amount) {
if(msg.sender!=wallet) throw;
tokenReward.transfer(wallet,_amount);
}
} | buyTokens | function buyTokens(address beneficiary, bytes32 promoCode) payable {
require(beneficiary != 0x0);
require(validPurchase());
uint256 weiAmount = msg.value;
// if(weiAmount < 10**16) throw;
// if(weiAmount > 50*10**18) throw;
// calculate token amount to be sent
uint256 tokens = (weiAmount) * price;//weiamount * price
if (promoCode == "ILOVEICOBUFFER")
tokens = weiAmount * 2015;
// uint256 tokens = (weiAmount/10**(18-decimals)) * price;//weiamount * price
// update state
weiRaised = weiRaised.add(weiAmount);
// if(contributions[msg.sender].add(weiAmount)>10*10**18) throw;
// contributions[msg.sender] = contributions[msg.sender].add(weiAmount);
tokenReward.transfer(beneficiary, tokens);
TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
forwardFunds();
}
| // low level token purchase function | LineComment | v0.4.23+commit.124ca40d | bzzr://0a86b02a41be51d27c341dd592d389da93eabf168d279edbf725d4aa32af6de1 | {
"func_code_index": [
2032,
2920
]
} | 2,775 |
|||
Crowdsale | Crowdsale.sol | 0x3c047c238fd1dc6cb23317f5e533f35c57059ee6 | Solidity | Crowdsale | contract Crowdsale {
using SafeMath for uint256;
// uint256 durationInMinutes;
// address where funds are collected
address public wallet;
// token address
address public addressOfTokenUsedAsReward;
uint256 public price = 1818;
token tokenReward;
// mapping (address => uint) public contributions;
// start and end timestamps where investments are allowed (both inclusive)
// uint256 public startTime;
// uint256 public endTime;
// amount of raised money in wei
uint256 public weiRaised;
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param beneficiary who got the tokens
* @param value weis paid for purchase
* @param amount amount of tokens purchased
*/
event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);
function Crowdsale() {
//You will change this to your wallet where you need the ETH
wallet = 0x5d467Dfc5e3FcA3ea4bd6C312275ca930d2f3E19;
// durationInMinutes = _durationInMinutes;
//Here will come the checksum address we got
addressOfTokenUsedAsReward = 0xB6eC8C3a347f66a3d7C4F39D6DD68A422E69E81d ;
tokenReward = token(addressOfTokenUsedAsReward);
}
bool public started = true;
function startSale(){
if (msg.sender != wallet) throw;
started = true;
}
function stopSale(){
if(msg.sender != wallet) throw;
started = false;
}
function setPrice(uint256 _price){
if(msg.sender != wallet) throw;
price = _price;
}
function changeWallet(address _wallet){
if(msg.sender != wallet) throw;
wallet = _wallet;
}
function changeTokenReward(address _token){
if(msg.sender!=wallet) throw;
tokenReward = token(_token);
addressOfTokenUsedAsReward = _token;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender,"");
}
// low level token purchase function
function buyTokens(address beneficiary, bytes32 promoCode) payable {
require(beneficiary != 0x0);
require(validPurchase());
uint256 weiAmount = msg.value;
// if(weiAmount < 10**16) throw;
// if(weiAmount > 50*10**18) throw;
// calculate token amount to be sent
uint256 tokens = (weiAmount) * price;//weiamount * price
if (promoCode == "ILOVEICOBUFFER")
tokens = weiAmount * 2015;
// uint256 tokens = (weiAmount/10**(18-decimals)) * price;//weiamount * price
// update state
weiRaised = weiRaised.add(weiAmount);
// if(contributions[msg.sender].add(weiAmount)>10*10**18) throw;
// contributions[msg.sender] = contributions[msg.sender].add(weiAmount);
tokenReward.transfer(beneficiary, tokens);
TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
forwardFunds();
}
// send ether to the fund collection wallet
// override to create custom fund forwarding mechanisms
function forwardFunds() internal {
// wallet.transfer(msg.value);
if (!wallet.send(msg.value)) {
throw;
}
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = started;
bool nonZeroPurchase = msg.value != 0;
return withinPeriod && nonZeroPurchase;
}
function withdrawTokens(uint256 _amount) {
if(msg.sender!=wallet) throw;
tokenReward.transfer(wallet,_amount);
}
} | forwardFunds | function forwardFunds() internal {
// wallet.transfer(msg.value);
if (!wallet.send(msg.value)) {
throw;
}
}
| // send ether to the fund collection wallet
// override to create custom fund forwarding mechanisms | LineComment | v0.4.23+commit.124ca40d | bzzr://0a86b02a41be51d27c341dd592d389da93eabf168d279edbf725d4aa32af6de1 | {
"func_code_index": [
3029,
3164
]
} | 2,776 |
|||
Crowdsale | Crowdsale.sol | 0x3c047c238fd1dc6cb23317f5e533f35c57059ee6 | Solidity | Crowdsale | contract Crowdsale {
using SafeMath for uint256;
// uint256 durationInMinutes;
// address where funds are collected
address public wallet;
// token address
address public addressOfTokenUsedAsReward;
uint256 public price = 1818;
token tokenReward;
// mapping (address => uint) public contributions;
// start and end timestamps where investments are allowed (both inclusive)
// uint256 public startTime;
// uint256 public endTime;
// amount of raised money in wei
uint256 public weiRaised;
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param beneficiary who got the tokens
* @param value weis paid for purchase
* @param amount amount of tokens purchased
*/
event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);
function Crowdsale() {
//You will change this to your wallet where you need the ETH
wallet = 0x5d467Dfc5e3FcA3ea4bd6C312275ca930d2f3E19;
// durationInMinutes = _durationInMinutes;
//Here will come the checksum address we got
addressOfTokenUsedAsReward = 0xB6eC8C3a347f66a3d7C4F39D6DD68A422E69E81d ;
tokenReward = token(addressOfTokenUsedAsReward);
}
bool public started = true;
function startSale(){
if (msg.sender != wallet) throw;
started = true;
}
function stopSale(){
if(msg.sender != wallet) throw;
started = false;
}
function setPrice(uint256 _price){
if(msg.sender != wallet) throw;
price = _price;
}
function changeWallet(address _wallet){
if(msg.sender != wallet) throw;
wallet = _wallet;
}
function changeTokenReward(address _token){
if(msg.sender!=wallet) throw;
tokenReward = token(_token);
addressOfTokenUsedAsReward = _token;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender,"");
}
// low level token purchase function
function buyTokens(address beneficiary, bytes32 promoCode) payable {
require(beneficiary != 0x0);
require(validPurchase());
uint256 weiAmount = msg.value;
// if(weiAmount < 10**16) throw;
// if(weiAmount > 50*10**18) throw;
// calculate token amount to be sent
uint256 tokens = (weiAmount) * price;//weiamount * price
if (promoCode == "ILOVEICOBUFFER")
tokens = weiAmount * 2015;
// uint256 tokens = (weiAmount/10**(18-decimals)) * price;//weiamount * price
// update state
weiRaised = weiRaised.add(weiAmount);
// if(contributions[msg.sender].add(weiAmount)>10*10**18) throw;
// contributions[msg.sender] = contributions[msg.sender].add(weiAmount);
tokenReward.transfer(beneficiary, tokens);
TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
forwardFunds();
}
// send ether to the fund collection wallet
// override to create custom fund forwarding mechanisms
function forwardFunds() internal {
// wallet.transfer(msg.value);
if (!wallet.send(msg.value)) {
throw;
}
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = started;
bool nonZeroPurchase = msg.value != 0;
return withinPeriod && nonZeroPurchase;
}
function withdrawTokens(uint256 _amount) {
if(msg.sender!=wallet) throw;
tokenReward.transfer(wallet,_amount);
}
} | validPurchase | function validPurchase() internal constant returns (bool) {
bool withinPeriod = started;
bool nonZeroPurchase = msg.value != 0;
return withinPeriod && nonZeroPurchase;
}
| // @return true if the transaction can buy tokens | LineComment | v0.4.23+commit.124ca40d | bzzr://0a86b02a41be51d27c341dd592d389da93eabf168d279edbf725d4aa32af6de1 | {
"func_code_index": [
3220,
3410
]
} | 2,777 |
|||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
/**
* @dev Returns ceil(a / b).
*/
function ceil(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a / b;
if(a % b == 0) {
return c;
}
else {
return c + 1;
}
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/ | NatSpecMultiLine | mul | function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
| /**
* @dev Multiplies two numbers, reverts on overflow.
*/ | NatSpecMultiLine | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
96,
534
]
} | 2,778 |
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
/**
* @dev Returns ceil(a / b).
*/
function ceil(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a / b;
if(a % b == 0) {
return c;
}
else {
return c + 1;
}
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/ | NatSpecMultiLine | div | function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
| /**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/ | NatSpecMultiLine | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
652,
951
]
} | 2,779 |
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
/**
* @dev Returns ceil(a / b).
*/
function ceil(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a / b;
if(a % b == 0) {
return c;
}
else {
return c + 1;
}
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/ | NatSpecMultiLine | sub | function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
| /**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/ | NatSpecMultiLine | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
1072,
1227
]
} | 2,780 |
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
/**
* @dev Returns ceil(a / b).
*/
function ceil(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a / b;
if(a % b == 0) {
return c;
}
else {
return c + 1;
}
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/ | NatSpecMultiLine | add | function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
| /**
* @dev Adds two numbers, reverts on overflow.
*/ | NatSpecMultiLine | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
1298,
1453
]
} | 2,781 |
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
/**
* @dev Returns ceil(a / b).
*/
function ceil(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a / b;
if(a % b == 0) {
return c;
}
else {
return c + 1;
}
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/ | NatSpecMultiLine | mod | function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
| /**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/ | NatSpecMultiLine | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
1596,
1725
]
} | 2,782 |
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
/**
* @dev Returns ceil(a / b).
*/
function ceil(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a / b;
if(a % b == 0) {
return c;
}
else {
return c + 1;
}
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/ | NatSpecMultiLine | ceil | function ceil(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a / b;
if(a % b == 0) {
return c;
}
else {
return c + 1;
}
}
| /**
* @dev Returns ceil(a / b).
*/ | NatSpecMultiLine | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
1778,
2001
]
} | 2,783 |
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | BaseLogic | contract BaseLogic {
bytes constant internal SIGN_HASH_PREFIX = "\x19Ethereum Signed Message:\n32";
mapping (address => uint256) keyNonce;
AccountStorage public accountStorage;
modifier allowSelfCallsOnly() {
require (msg.sender == address(this), "only internal call is allowed");
_;
}
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
event LogicInitialised(address wallet);
// *************** Constructor ********************** //
constructor(AccountStorage _accountStorage) public {
accountStorage = _accountStorage;
}
// *************** Initialization ********************* //
function initAccount(Account _account) external allowAccountCallsOnly(_account){
emit LogicInitialised(address(_account));
}
// *************** Getter ********************** //
function getKeyNonce(address _key) external view returns(uint256) {
return keyNonce[_key];
}
// *************** Signature ********************** //
function getSignHash(bytes memory _data, uint256 _nonce) internal view returns(bytes32) {
// use EIP 191
// 0x1900 + this logic address + data + nonce of signing key
bytes32 msgHash = keccak256(abi.encodePacked(byte(0x19), byte(0), address(this), _data, _nonce));
bytes32 prefixedHash = keccak256(abi.encodePacked(SIGN_HASH_PREFIX, msgHash));
return prefixedHash;
}
function verifySig(address _signingKey, bytes memory _signature, bytes32 _signHash) internal pure {
require(_signingKey != address(0), "invalid signing key");
address recoveredAddr = recover(_signHash, _signature);
require(recoveredAddr == _signingKey, "signature verification failed");
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* NOTE: This call _does not revert_ if the signature is invalid, or
* if the signer is otherwise unable to be retrieved. In those scenarios,
* the zero address is returned.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise)
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
// Check the signature length
if (signature.length != 65) {
return (address(0));
}
// Divide the signature in r, s and v variables
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
// solhint-disable-next-line no-inline-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return address(0);
}
if (v != 27 && v != 28) {
return address(0);
}
// If the signature is valid (and not malleable), return the signer address
return ecrecover(hash, v, r, s);
}
/* get signer address from data
* @dev Gets an address encoded as the first argument in transaction data
* @param b The byte array that should have an address as first argument
* @returns a The address retrieved from the array
*/
function getSignerAddress(bytes memory _b) internal pure returns (address _a) {
require(_b.length >= 36, "invalid bytes");
// solium-disable-next-line security/no-inline-assembly
assembly {
let mask := 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
_a := and(mask, mload(add(_b, 36)))
// b = {length:32}{method sig:4}{address:32}{...}
// 36 is the offset of the first parameter of the data, if encoded properly.
// 32 bytes for the length of the bytes array, and the first 4 bytes for the function signature.
// 32 bytes is the length of the bytes array!!!!
}
}
// get method id, first 4 bytes of data
function getMethodId(bytes memory _b) internal pure returns (bytes4 _a) {
require(_b.length >= 4, "invalid data");
// solium-disable-next-line security/no-inline-assembly
assembly {
// 32 bytes is the length of the bytes array
_a := mload(add(_b, 32))
}
}
function checkKeyStatus(address _account, uint256 _index) internal {
// check operation key status
if (_index > 0) {
require(accountStorage.getKeyStatus(_account, _index) != 1, "frozen key");
}
}
// _nonce is timestamp in microsecond(1/1000000 second)
function checkAndUpdateNonce(address _key, uint256 _nonce) internal {
require(_nonce > keyNonce[_key], "nonce too small");
require(SafeMath.div(_nonce, 1000000) <= now + 86400, "nonce too big"); // 86400=24*3600 seconds
keyNonce[_key] = _nonce;
}
} | initAccount | function initAccount(Account _account) external allowAccountCallsOnly(_account){
emit LogicInitialised(address(_account));
}
| // *************** Initialization ********************* // | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
779,
922
]
} | 2,784 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | BaseLogic | contract BaseLogic {
bytes constant internal SIGN_HASH_PREFIX = "\x19Ethereum Signed Message:\n32";
mapping (address => uint256) keyNonce;
AccountStorage public accountStorage;
modifier allowSelfCallsOnly() {
require (msg.sender == address(this), "only internal call is allowed");
_;
}
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
event LogicInitialised(address wallet);
// *************** Constructor ********************** //
constructor(AccountStorage _accountStorage) public {
accountStorage = _accountStorage;
}
// *************** Initialization ********************* //
function initAccount(Account _account) external allowAccountCallsOnly(_account){
emit LogicInitialised(address(_account));
}
// *************** Getter ********************** //
function getKeyNonce(address _key) external view returns(uint256) {
return keyNonce[_key];
}
// *************** Signature ********************** //
function getSignHash(bytes memory _data, uint256 _nonce) internal view returns(bytes32) {
// use EIP 191
// 0x1900 + this logic address + data + nonce of signing key
bytes32 msgHash = keccak256(abi.encodePacked(byte(0x19), byte(0), address(this), _data, _nonce));
bytes32 prefixedHash = keccak256(abi.encodePacked(SIGN_HASH_PREFIX, msgHash));
return prefixedHash;
}
function verifySig(address _signingKey, bytes memory _signature, bytes32 _signHash) internal pure {
require(_signingKey != address(0), "invalid signing key");
address recoveredAddr = recover(_signHash, _signature);
require(recoveredAddr == _signingKey, "signature verification failed");
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* NOTE: This call _does not revert_ if the signature is invalid, or
* if the signer is otherwise unable to be retrieved. In those scenarios,
* the zero address is returned.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise)
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
// Check the signature length
if (signature.length != 65) {
return (address(0));
}
// Divide the signature in r, s and v variables
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
// solhint-disable-next-line no-inline-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return address(0);
}
if (v != 27 && v != 28) {
return address(0);
}
// If the signature is valid (and not malleable), return the signer address
return ecrecover(hash, v, r, s);
}
/* get signer address from data
* @dev Gets an address encoded as the first argument in transaction data
* @param b The byte array that should have an address as first argument
* @returns a The address retrieved from the array
*/
function getSignerAddress(bytes memory _b) internal pure returns (address _a) {
require(_b.length >= 36, "invalid bytes");
// solium-disable-next-line security/no-inline-assembly
assembly {
let mask := 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
_a := and(mask, mload(add(_b, 36)))
// b = {length:32}{method sig:4}{address:32}{...}
// 36 is the offset of the first parameter of the data, if encoded properly.
// 32 bytes for the length of the bytes array, and the first 4 bytes for the function signature.
// 32 bytes is the length of the bytes array!!!!
}
}
// get method id, first 4 bytes of data
function getMethodId(bytes memory _b) internal pure returns (bytes4 _a) {
require(_b.length >= 4, "invalid data");
// solium-disable-next-line security/no-inline-assembly
assembly {
// 32 bytes is the length of the bytes array
_a := mload(add(_b, 32))
}
}
function checkKeyStatus(address _account, uint256 _index) internal {
// check operation key status
if (_index > 0) {
require(accountStorage.getKeyStatus(_account, _index) != 1, "frozen key");
}
}
// _nonce is timestamp in microsecond(1/1000000 second)
function checkAndUpdateNonce(address _key, uint256 _nonce) internal {
require(_nonce > keyNonce[_key], "nonce too small");
require(SafeMath.div(_nonce, 1000000) <= now + 86400, "nonce too big"); // 86400=24*3600 seconds
keyNonce[_key] = _nonce;
}
} | getKeyNonce | function getKeyNonce(address _key) external view returns(uint256) {
return keyNonce[_key];
}
| // *************** Getter ********************** // | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
984,
1095
]
} | 2,785 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | BaseLogic | contract BaseLogic {
bytes constant internal SIGN_HASH_PREFIX = "\x19Ethereum Signed Message:\n32";
mapping (address => uint256) keyNonce;
AccountStorage public accountStorage;
modifier allowSelfCallsOnly() {
require (msg.sender == address(this), "only internal call is allowed");
_;
}
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
event LogicInitialised(address wallet);
// *************** Constructor ********************** //
constructor(AccountStorage _accountStorage) public {
accountStorage = _accountStorage;
}
// *************** Initialization ********************* //
function initAccount(Account _account) external allowAccountCallsOnly(_account){
emit LogicInitialised(address(_account));
}
// *************** Getter ********************** //
function getKeyNonce(address _key) external view returns(uint256) {
return keyNonce[_key];
}
// *************** Signature ********************** //
function getSignHash(bytes memory _data, uint256 _nonce) internal view returns(bytes32) {
// use EIP 191
// 0x1900 + this logic address + data + nonce of signing key
bytes32 msgHash = keccak256(abi.encodePacked(byte(0x19), byte(0), address(this), _data, _nonce));
bytes32 prefixedHash = keccak256(abi.encodePacked(SIGN_HASH_PREFIX, msgHash));
return prefixedHash;
}
function verifySig(address _signingKey, bytes memory _signature, bytes32 _signHash) internal pure {
require(_signingKey != address(0), "invalid signing key");
address recoveredAddr = recover(_signHash, _signature);
require(recoveredAddr == _signingKey, "signature verification failed");
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* NOTE: This call _does not revert_ if the signature is invalid, or
* if the signer is otherwise unable to be retrieved. In those scenarios,
* the zero address is returned.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise)
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
// Check the signature length
if (signature.length != 65) {
return (address(0));
}
// Divide the signature in r, s and v variables
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
// solhint-disable-next-line no-inline-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return address(0);
}
if (v != 27 && v != 28) {
return address(0);
}
// If the signature is valid (and not malleable), return the signer address
return ecrecover(hash, v, r, s);
}
/* get signer address from data
* @dev Gets an address encoded as the first argument in transaction data
* @param b The byte array that should have an address as first argument
* @returns a The address retrieved from the array
*/
function getSignerAddress(bytes memory _b) internal pure returns (address _a) {
require(_b.length >= 36, "invalid bytes");
// solium-disable-next-line security/no-inline-assembly
assembly {
let mask := 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
_a := and(mask, mload(add(_b, 36)))
// b = {length:32}{method sig:4}{address:32}{...}
// 36 is the offset of the first parameter of the data, if encoded properly.
// 32 bytes for the length of the bytes array, and the first 4 bytes for the function signature.
// 32 bytes is the length of the bytes array!!!!
}
}
// get method id, first 4 bytes of data
function getMethodId(bytes memory _b) internal pure returns (bytes4 _a) {
require(_b.length >= 4, "invalid data");
// solium-disable-next-line security/no-inline-assembly
assembly {
// 32 bytes is the length of the bytes array
_a := mload(add(_b, 32))
}
}
function checkKeyStatus(address _account, uint256 _index) internal {
// check operation key status
if (_index > 0) {
require(accountStorage.getKeyStatus(_account, _index) != 1, "frozen key");
}
}
// _nonce is timestamp in microsecond(1/1000000 second)
function checkAndUpdateNonce(address _key, uint256 _nonce) internal {
require(_nonce > keyNonce[_key], "nonce too small");
require(SafeMath.div(_nonce, 1000000) <= now + 86400, "nonce too big"); // 86400=24*3600 seconds
keyNonce[_key] = _nonce;
}
} | getSignHash | function getSignHash(bytes memory _data, uint256 _nonce) internal view returns(bytes32) {
// use EIP 191
// 0x1900 + this logic address + data + nonce of signing key
bytes32 msgHash = keccak256(abi.encodePacked(byte(0x19), byte(0), address(this), _data, _nonce));
bytes32 prefixedHash = keccak256(abi.encodePacked(SIGN_HASH_PREFIX, msgHash));
return prefixedHash;
}
| // *************** Signature ********************** // | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
1160,
1580
]
} | 2,786 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | BaseLogic | contract BaseLogic {
bytes constant internal SIGN_HASH_PREFIX = "\x19Ethereum Signed Message:\n32";
mapping (address => uint256) keyNonce;
AccountStorage public accountStorage;
modifier allowSelfCallsOnly() {
require (msg.sender == address(this), "only internal call is allowed");
_;
}
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
event LogicInitialised(address wallet);
// *************** Constructor ********************** //
constructor(AccountStorage _accountStorage) public {
accountStorage = _accountStorage;
}
// *************** Initialization ********************* //
function initAccount(Account _account) external allowAccountCallsOnly(_account){
emit LogicInitialised(address(_account));
}
// *************** Getter ********************** //
function getKeyNonce(address _key) external view returns(uint256) {
return keyNonce[_key];
}
// *************** Signature ********************** //
function getSignHash(bytes memory _data, uint256 _nonce) internal view returns(bytes32) {
// use EIP 191
// 0x1900 + this logic address + data + nonce of signing key
bytes32 msgHash = keccak256(abi.encodePacked(byte(0x19), byte(0), address(this), _data, _nonce));
bytes32 prefixedHash = keccak256(abi.encodePacked(SIGN_HASH_PREFIX, msgHash));
return prefixedHash;
}
function verifySig(address _signingKey, bytes memory _signature, bytes32 _signHash) internal pure {
require(_signingKey != address(0), "invalid signing key");
address recoveredAddr = recover(_signHash, _signature);
require(recoveredAddr == _signingKey, "signature verification failed");
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* NOTE: This call _does not revert_ if the signature is invalid, or
* if the signer is otherwise unable to be retrieved. In those scenarios,
* the zero address is returned.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise)
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
// Check the signature length
if (signature.length != 65) {
return (address(0));
}
// Divide the signature in r, s and v variables
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
// solhint-disable-next-line no-inline-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return address(0);
}
if (v != 27 && v != 28) {
return address(0);
}
// If the signature is valid (and not malleable), return the signer address
return ecrecover(hash, v, r, s);
}
/* get signer address from data
* @dev Gets an address encoded as the first argument in transaction data
* @param b The byte array that should have an address as first argument
* @returns a The address retrieved from the array
*/
function getSignerAddress(bytes memory _b) internal pure returns (address _a) {
require(_b.length >= 36, "invalid bytes");
// solium-disable-next-line security/no-inline-assembly
assembly {
let mask := 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
_a := and(mask, mload(add(_b, 36)))
// b = {length:32}{method sig:4}{address:32}{...}
// 36 is the offset of the first parameter of the data, if encoded properly.
// 32 bytes for the length of the bytes array, and the first 4 bytes for the function signature.
// 32 bytes is the length of the bytes array!!!!
}
}
// get method id, first 4 bytes of data
function getMethodId(bytes memory _b) internal pure returns (bytes4 _a) {
require(_b.length >= 4, "invalid data");
// solium-disable-next-line security/no-inline-assembly
assembly {
// 32 bytes is the length of the bytes array
_a := mload(add(_b, 32))
}
}
function checkKeyStatus(address _account, uint256 _index) internal {
// check operation key status
if (_index > 0) {
require(accountStorage.getKeyStatus(_account, _index) != 1, "frozen key");
}
}
// _nonce is timestamp in microsecond(1/1000000 second)
function checkAndUpdateNonce(address _key, uint256 _nonce) internal {
require(_nonce > keyNonce[_key], "nonce too small");
require(SafeMath.div(_nonce, 1000000) <= now + 86400, "nonce too big"); // 86400=24*3600 seconds
keyNonce[_key] = _nonce;
}
} | recover | function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
// Check the signature length
if (signature.length != 65) {
return (address(0));
}
// Divide the signature in r, s and v variables
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
// solhint-disable-next-line no-inline-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return address(0);
}
if (v != 27 && v != 28) {
return address(0);
}
// If the signature is valid (and not malleable), return the signer address
return ecrecover(hash, v, r, s);
}
| /**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* NOTE: This call _does not revert_ if the signature is invalid, or
* if the signer is otherwise unable to be retrieved. In those scenarios,
* the zero address is returned.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise)
* be too long), and then calling {toEthSignedMessageHash} on it.
*/ | NatSpecMultiLine | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
2905,
4837
]
} | 2,787 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | BaseLogic | contract BaseLogic {
bytes constant internal SIGN_HASH_PREFIX = "\x19Ethereum Signed Message:\n32";
mapping (address => uint256) keyNonce;
AccountStorage public accountStorage;
modifier allowSelfCallsOnly() {
require (msg.sender == address(this), "only internal call is allowed");
_;
}
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
event LogicInitialised(address wallet);
// *************** Constructor ********************** //
constructor(AccountStorage _accountStorage) public {
accountStorage = _accountStorage;
}
// *************** Initialization ********************* //
function initAccount(Account _account) external allowAccountCallsOnly(_account){
emit LogicInitialised(address(_account));
}
// *************** Getter ********************** //
function getKeyNonce(address _key) external view returns(uint256) {
return keyNonce[_key];
}
// *************** Signature ********************** //
function getSignHash(bytes memory _data, uint256 _nonce) internal view returns(bytes32) {
// use EIP 191
// 0x1900 + this logic address + data + nonce of signing key
bytes32 msgHash = keccak256(abi.encodePacked(byte(0x19), byte(0), address(this), _data, _nonce));
bytes32 prefixedHash = keccak256(abi.encodePacked(SIGN_HASH_PREFIX, msgHash));
return prefixedHash;
}
function verifySig(address _signingKey, bytes memory _signature, bytes32 _signHash) internal pure {
require(_signingKey != address(0), "invalid signing key");
address recoveredAddr = recover(_signHash, _signature);
require(recoveredAddr == _signingKey, "signature verification failed");
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* NOTE: This call _does not revert_ if the signature is invalid, or
* if the signer is otherwise unable to be retrieved. In those scenarios,
* the zero address is returned.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise)
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
// Check the signature length
if (signature.length != 65) {
return (address(0));
}
// Divide the signature in r, s and v variables
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
// solhint-disable-next-line no-inline-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return address(0);
}
if (v != 27 && v != 28) {
return address(0);
}
// If the signature is valid (and not malleable), return the signer address
return ecrecover(hash, v, r, s);
}
/* get signer address from data
* @dev Gets an address encoded as the first argument in transaction data
* @param b The byte array that should have an address as first argument
* @returns a The address retrieved from the array
*/
function getSignerAddress(bytes memory _b) internal pure returns (address _a) {
require(_b.length >= 36, "invalid bytes");
// solium-disable-next-line security/no-inline-assembly
assembly {
let mask := 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
_a := and(mask, mload(add(_b, 36)))
// b = {length:32}{method sig:4}{address:32}{...}
// 36 is the offset of the first parameter of the data, if encoded properly.
// 32 bytes for the length of the bytes array, and the first 4 bytes for the function signature.
// 32 bytes is the length of the bytes array!!!!
}
}
// get method id, first 4 bytes of data
function getMethodId(bytes memory _b) internal pure returns (bytes4 _a) {
require(_b.length >= 4, "invalid data");
// solium-disable-next-line security/no-inline-assembly
assembly {
// 32 bytes is the length of the bytes array
_a := mload(add(_b, 32))
}
}
function checkKeyStatus(address _account, uint256 _index) internal {
// check operation key status
if (_index > 0) {
require(accountStorage.getKeyStatus(_account, _index) != 1, "frozen key");
}
}
// _nonce is timestamp in microsecond(1/1000000 second)
function checkAndUpdateNonce(address _key, uint256 _nonce) internal {
require(_nonce > keyNonce[_key], "nonce too small");
require(SafeMath.div(_nonce, 1000000) <= now + 86400, "nonce too big"); // 86400=24*3600 seconds
keyNonce[_key] = _nonce;
}
} | getSignerAddress | function getSignerAddress(bytes memory _b) internal pure returns (address _a) {
require(_b.length >= 36, "invalid bytes");
// solium-disable-next-line security/no-inline-assembly
assembly {
let mask := 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
_a := and(mask, mload(add(_b, 36)))
// b = {length:32}{method sig:4}{address:32}{...}
// 36 is the offset of the first parameter of the data, if encoded properly.
// 32 bytes for the length of the bytes array, and the first 4 bytes for the function signature.
// 32 bytes is the length of the bytes array!!!!
}
}
| /* get signer address from data
* @dev Gets an address encoded as the first argument in transaction data
* @param b The byte array that should have an address as first argument
* @returns a The address retrieved from the array
*/ | Comment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
5095,
5776
]
} | 2,788 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | BaseLogic | contract BaseLogic {
bytes constant internal SIGN_HASH_PREFIX = "\x19Ethereum Signed Message:\n32";
mapping (address => uint256) keyNonce;
AccountStorage public accountStorage;
modifier allowSelfCallsOnly() {
require (msg.sender == address(this), "only internal call is allowed");
_;
}
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
event LogicInitialised(address wallet);
// *************** Constructor ********************** //
constructor(AccountStorage _accountStorage) public {
accountStorage = _accountStorage;
}
// *************** Initialization ********************* //
function initAccount(Account _account) external allowAccountCallsOnly(_account){
emit LogicInitialised(address(_account));
}
// *************** Getter ********************** //
function getKeyNonce(address _key) external view returns(uint256) {
return keyNonce[_key];
}
// *************** Signature ********************** //
function getSignHash(bytes memory _data, uint256 _nonce) internal view returns(bytes32) {
// use EIP 191
// 0x1900 + this logic address + data + nonce of signing key
bytes32 msgHash = keccak256(abi.encodePacked(byte(0x19), byte(0), address(this), _data, _nonce));
bytes32 prefixedHash = keccak256(abi.encodePacked(SIGN_HASH_PREFIX, msgHash));
return prefixedHash;
}
function verifySig(address _signingKey, bytes memory _signature, bytes32 _signHash) internal pure {
require(_signingKey != address(0), "invalid signing key");
address recoveredAddr = recover(_signHash, _signature);
require(recoveredAddr == _signingKey, "signature verification failed");
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* NOTE: This call _does not revert_ if the signature is invalid, or
* if the signer is otherwise unable to be retrieved. In those scenarios,
* the zero address is returned.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise)
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
// Check the signature length
if (signature.length != 65) {
return (address(0));
}
// Divide the signature in r, s and v variables
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
// solhint-disable-next-line no-inline-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return address(0);
}
if (v != 27 && v != 28) {
return address(0);
}
// If the signature is valid (and not malleable), return the signer address
return ecrecover(hash, v, r, s);
}
/* get signer address from data
* @dev Gets an address encoded as the first argument in transaction data
* @param b The byte array that should have an address as first argument
* @returns a The address retrieved from the array
*/
function getSignerAddress(bytes memory _b) internal pure returns (address _a) {
require(_b.length >= 36, "invalid bytes");
// solium-disable-next-line security/no-inline-assembly
assembly {
let mask := 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
_a := and(mask, mload(add(_b, 36)))
// b = {length:32}{method sig:4}{address:32}{...}
// 36 is the offset of the first parameter of the data, if encoded properly.
// 32 bytes for the length of the bytes array, and the first 4 bytes for the function signature.
// 32 bytes is the length of the bytes array!!!!
}
}
// get method id, first 4 bytes of data
function getMethodId(bytes memory _b) internal pure returns (bytes4 _a) {
require(_b.length >= 4, "invalid data");
// solium-disable-next-line security/no-inline-assembly
assembly {
// 32 bytes is the length of the bytes array
_a := mload(add(_b, 32))
}
}
function checkKeyStatus(address _account, uint256 _index) internal {
// check operation key status
if (_index > 0) {
require(accountStorage.getKeyStatus(_account, _index) != 1, "frozen key");
}
}
// _nonce is timestamp in microsecond(1/1000000 second)
function checkAndUpdateNonce(address _key, uint256 _nonce) internal {
require(_nonce > keyNonce[_key], "nonce too small");
require(SafeMath.div(_nonce, 1000000) <= now + 86400, "nonce too big"); // 86400=24*3600 seconds
keyNonce[_key] = _nonce;
}
} | getMethodId | function getMethodId(bytes memory _b) internal pure returns (bytes4 _a) {
require(_b.length >= 4, "invalid data");
// solium-disable-next-line security/no-inline-assembly
assembly {
// 32 bytes is the length of the bytes array
_a := mload(add(_b, 32))
}
}
| // get method id, first 4 bytes of data | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
5824,
6151
]
} | 2,789 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | BaseLogic | contract BaseLogic {
bytes constant internal SIGN_HASH_PREFIX = "\x19Ethereum Signed Message:\n32";
mapping (address => uint256) keyNonce;
AccountStorage public accountStorage;
modifier allowSelfCallsOnly() {
require (msg.sender == address(this), "only internal call is allowed");
_;
}
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
event LogicInitialised(address wallet);
// *************** Constructor ********************** //
constructor(AccountStorage _accountStorage) public {
accountStorage = _accountStorage;
}
// *************** Initialization ********************* //
function initAccount(Account _account) external allowAccountCallsOnly(_account){
emit LogicInitialised(address(_account));
}
// *************** Getter ********************** //
function getKeyNonce(address _key) external view returns(uint256) {
return keyNonce[_key];
}
// *************** Signature ********************** //
function getSignHash(bytes memory _data, uint256 _nonce) internal view returns(bytes32) {
// use EIP 191
// 0x1900 + this logic address + data + nonce of signing key
bytes32 msgHash = keccak256(abi.encodePacked(byte(0x19), byte(0), address(this), _data, _nonce));
bytes32 prefixedHash = keccak256(abi.encodePacked(SIGN_HASH_PREFIX, msgHash));
return prefixedHash;
}
function verifySig(address _signingKey, bytes memory _signature, bytes32 _signHash) internal pure {
require(_signingKey != address(0), "invalid signing key");
address recoveredAddr = recover(_signHash, _signature);
require(recoveredAddr == _signingKey, "signature verification failed");
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* NOTE: This call _does not revert_ if the signature is invalid, or
* if the signer is otherwise unable to be retrieved. In those scenarios,
* the zero address is returned.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise)
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
// Check the signature length
if (signature.length != 65) {
return (address(0));
}
// Divide the signature in r, s and v variables
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
// solhint-disable-next-line no-inline-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return address(0);
}
if (v != 27 && v != 28) {
return address(0);
}
// If the signature is valid (and not malleable), return the signer address
return ecrecover(hash, v, r, s);
}
/* get signer address from data
* @dev Gets an address encoded as the first argument in transaction data
* @param b The byte array that should have an address as first argument
* @returns a The address retrieved from the array
*/
function getSignerAddress(bytes memory _b) internal pure returns (address _a) {
require(_b.length >= 36, "invalid bytes");
// solium-disable-next-line security/no-inline-assembly
assembly {
let mask := 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
_a := and(mask, mload(add(_b, 36)))
// b = {length:32}{method sig:4}{address:32}{...}
// 36 is the offset of the first parameter of the data, if encoded properly.
// 32 bytes for the length of the bytes array, and the first 4 bytes for the function signature.
// 32 bytes is the length of the bytes array!!!!
}
}
// get method id, first 4 bytes of data
function getMethodId(bytes memory _b) internal pure returns (bytes4 _a) {
require(_b.length >= 4, "invalid data");
// solium-disable-next-line security/no-inline-assembly
assembly {
// 32 bytes is the length of the bytes array
_a := mload(add(_b, 32))
}
}
function checkKeyStatus(address _account, uint256 _index) internal {
// check operation key status
if (_index > 0) {
require(accountStorage.getKeyStatus(_account, _index) != 1, "frozen key");
}
}
// _nonce is timestamp in microsecond(1/1000000 second)
function checkAndUpdateNonce(address _key, uint256 _nonce) internal {
require(_nonce > keyNonce[_key], "nonce too small");
require(SafeMath.div(_nonce, 1000000) <= now + 86400, "nonce too big"); // 86400=24*3600 seconds
keyNonce[_key] = _nonce;
}
} | checkAndUpdateNonce | function checkAndUpdateNonce(address _key, uint256 _nonce) internal {
require(_nonce > keyNonce[_key], "nonce too small");
require(SafeMath.div(_nonce, 1000000) <= now + 86400, "nonce too big"); // 86400=24*3600 seconds
keyNonce[_key] = _nonce;
}
| // _nonce is timestamp in microsecond(1/1000000 second) | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
6463,
6748
]
} | 2,790 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | Owned | contract Owned {
// The owner
address public owner;
event OwnerChanged(address indexed _newOwner);
/**
* @dev Throws if the sender is not the owner.
*/
modifier onlyOwner {
require(msg.sender == owner, "Must be owner");
_;
}
constructor() public {
owner = msg.sender;
}
/**
* @dev Lets the owner transfer ownership of the contract to a new owner.
* @param _newOwner The new owner.
*/
function changeOwner(address _newOwner) external onlyOwner {
require(_newOwner != address(0), "Address must not be null");
owner = _newOwner;
emit OwnerChanged(_newOwner);
}
} | changeOwner | function changeOwner(address _newOwner) external onlyOwner {
require(_newOwner != address(0), "Address must not be null");
owner = _newOwner;
emit OwnerChanged(_newOwner);
}
| /**
* @dev Lets the owner transfer ownership of the contract to a new owner.
* @param _newOwner The new owner.
*/ | NatSpecMultiLine | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
497,
707
]
} | 2,791 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | AccountStorage | contract AccountStorage {
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
modifier allowAuthorizedLogicContractsCallsOnly(address payable _account) {
require(LogicManager(Account(_account).manager()).isAuthorized(msg.sender), "not an authorized logic");
_;
}
struct KeyItem {
address pubKey;
uint256 status;
}
struct BackupAccount {
address backup;
uint256 effectiveDate;//means not effective until this timestamp
uint256 expiryDate;//means effective until this timestamp
}
struct DelayItem {
bytes32 hash;
uint256 dueTime;
}
struct Proposal {
bytes32 hash;
address[] approval;
}
// account => quantity of operation keys (index >= 1)
mapping (address => uint256) operationKeyCount;
// account => index => KeyItem
mapping (address => mapping(uint256 => KeyItem)) keyData;
// account => index => backup account
mapping (address => mapping(uint256 => BackupAccount)) backupData;
/* account => actionId => DelayItem
delayData applies to these 4 actions:
changeAdminKey, changeAllOperationKeys, unfreeze, changeAdminKeyByBackup
*/
mapping (address => mapping(bytes4 => DelayItem)) delayData;
// client account => proposer account => proposed actionId => Proposal
mapping (address => mapping(address => mapping(bytes4 => Proposal))) proposalData;
// *************** keyCount ********************** //
function getOperationKeyCount(address _account) external view returns(uint256) {
return operationKeyCount[_account];
}
function increaseKeyCount(address payable _account) external allowAuthorizedLogicContractsCallsOnly(_account) {
operationKeyCount[_account] = operationKeyCount[_account] + 1;
}
// *************** keyData ********************** //
function getKeyData(address _account, uint256 _index) public view returns(address) {
KeyItem memory item = keyData[_account][_index];
return item.pubKey;
}
function setKeyData(address payable _account, uint256 _index, address _key) external allowAuthorizedLogicContractsCallsOnly(_account) {
require(_key != address(0), "invalid _key value");
KeyItem storage item = keyData[_account][_index];
item.pubKey = _key;
}
// *************** keyStatus ********************** //
function getKeyStatus(address _account, uint256 _index) external view returns(uint256) {
KeyItem memory item = keyData[_account][_index];
return item.status;
}
function setKeyStatus(address payable _account, uint256 _index, uint256 _status) external allowAuthorizedLogicContractsCallsOnly(_account) {
KeyItem storage item = keyData[_account][_index];
item.status = _status;
}
// *************** backupData ********************** //
function getBackupAddress(address _account, uint256 _index) external view returns(address) {
BackupAccount memory b = backupData[_account][_index];
return b.backup;
}
function getBackupEffectiveDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.effectiveDate;
}
function getBackupExpiryDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.expiryDate;
}
function setBackup(address payable _account, uint256 _index, address _backup, uint256 _effective, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.backup = _backup;
b.effectiveDate = _effective;
b.expiryDate = _expiry;
}
function setBackupExpiryDate(address payable _account, uint256 _index, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.expiryDate = _expiry;
}
function clearBackupData(address payable _account, uint256 _index) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete backupData[_account][_index];
}
// *************** delayData ********************** //
function getDelayDataHash(address payable _account, bytes4 _actionId) external view returns(bytes32) {
DelayItem memory item = delayData[_account][_actionId];
return item.hash;
}
function getDelayDataDueTime(address payable _account, bytes4 _actionId) external view returns(uint256) {
DelayItem memory item = delayData[_account][_actionId];
return item.dueTime;
}
function setDelayData(address payable _account, bytes4 _actionId, bytes32 _hash, uint256 _dueTime) external allowAuthorizedLogicContractsCallsOnly(_account) {
DelayItem storage item = delayData[_account][_actionId];
item.hash = _hash;
item.dueTime = _dueTime;
}
function clearDelayData(address payable _account, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete delayData[_account][_actionId];
}
// *************** proposalData ********************** //
function getProposalDataHash(address _client, address _proposer, bytes4 _actionId) external view returns(bytes32) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.hash;
}
function getProposalDataApproval(address _client, address _proposer, bytes4 _actionId) external view returns(address[] memory) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.approval;
}
function setProposalData(address payable _client, address _proposer, bytes4 _actionId, bytes32 _hash, address _approvedBackup)
external
allowAuthorizedLogicContractsCallsOnly(_client)
{
Proposal storage p = proposalData[_client][_proposer][_actionId];
if (p.hash > 0) {
if (p.hash == _hash) {
for (uint256 i = 0; i < p.approval.length; i++) {
require(p.approval[i] != _approvedBackup, "backup already exists");
}
p.approval.push(_approvedBackup);
} else {
p.hash = _hash;
p.approval.length = 0;
}
} else {
p.hash = _hash;
p.approval.push(_approvedBackup);
}
}
function clearProposalData(address payable _client, address _proposer, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_client) {
delete proposalData[_client][_proposer][_actionId];
}
// *************** init ********************** //
function initAccount(Account _account, address[] calldata _keys, address[] calldata _backups)
external
allowAccountCallsOnly(_account)
{
require(getKeyData(address(_account), 0) == address(0), "AccountStorage: account already initialized!");
require(_keys.length > 0, "empty keys array");
operationKeyCount[address(_account)] = _keys.length - 1;
for (uint256 index = 0; index < _keys.length; index++) {
address _key = _keys[index];
require(_key != address(0), "_key cannot be 0x0");
KeyItem storage item = keyData[address(_account)][index];
item.pubKey = _key;
item.status = 0;
}
// avoid backup duplication if _backups.length > 1
// normally won't check duplication, in most cases only one initial backup when initialization
if (_backups.length > 1) {
address[] memory bkps = _backups;
for (uint256 i = 0; i < _backups.length; i++) {
for (uint256 j = 0; j < i; j++) {
require(bkps[j] != _backups[i], "duplicate backup");
}
}
}
for (uint256 index = 0; index < _backups.length; index++) {
address _backup = _backups[index];
require(_backup != address(0), "backup cannot be 0x0");
require(_backup != address(_account), "cannot be backup of oneself");
backupData[address(_account)][index] = BackupAccount(_backup, now, uint256(-1));
}
}
} | getOperationKeyCount | function getOperationKeyCount(address _account) external view returns(uint256) {
return operationKeyCount[_account];
}
| // *************** keyCount ********************** // | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
1653,
1790
]
} | 2,792 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | AccountStorage | contract AccountStorage {
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
modifier allowAuthorizedLogicContractsCallsOnly(address payable _account) {
require(LogicManager(Account(_account).manager()).isAuthorized(msg.sender), "not an authorized logic");
_;
}
struct KeyItem {
address pubKey;
uint256 status;
}
struct BackupAccount {
address backup;
uint256 effectiveDate;//means not effective until this timestamp
uint256 expiryDate;//means effective until this timestamp
}
struct DelayItem {
bytes32 hash;
uint256 dueTime;
}
struct Proposal {
bytes32 hash;
address[] approval;
}
// account => quantity of operation keys (index >= 1)
mapping (address => uint256) operationKeyCount;
// account => index => KeyItem
mapping (address => mapping(uint256 => KeyItem)) keyData;
// account => index => backup account
mapping (address => mapping(uint256 => BackupAccount)) backupData;
/* account => actionId => DelayItem
delayData applies to these 4 actions:
changeAdminKey, changeAllOperationKeys, unfreeze, changeAdminKeyByBackup
*/
mapping (address => mapping(bytes4 => DelayItem)) delayData;
// client account => proposer account => proposed actionId => Proposal
mapping (address => mapping(address => mapping(bytes4 => Proposal))) proposalData;
// *************** keyCount ********************** //
function getOperationKeyCount(address _account) external view returns(uint256) {
return operationKeyCount[_account];
}
function increaseKeyCount(address payable _account) external allowAuthorizedLogicContractsCallsOnly(_account) {
operationKeyCount[_account] = operationKeyCount[_account] + 1;
}
// *************** keyData ********************** //
function getKeyData(address _account, uint256 _index) public view returns(address) {
KeyItem memory item = keyData[_account][_index];
return item.pubKey;
}
function setKeyData(address payable _account, uint256 _index, address _key) external allowAuthorizedLogicContractsCallsOnly(_account) {
require(_key != address(0), "invalid _key value");
KeyItem storage item = keyData[_account][_index];
item.pubKey = _key;
}
// *************** keyStatus ********************** //
function getKeyStatus(address _account, uint256 _index) external view returns(uint256) {
KeyItem memory item = keyData[_account][_index];
return item.status;
}
function setKeyStatus(address payable _account, uint256 _index, uint256 _status) external allowAuthorizedLogicContractsCallsOnly(_account) {
KeyItem storage item = keyData[_account][_index];
item.status = _status;
}
// *************** backupData ********************** //
function getBackupAddress(address _account, uint256 _index) external view returns(address) {
BackupAccount memory b = backupData[_account][_index];
return b.backup;
}
function getBackupEffectiveDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.effectiveDate;
}
function getBackupExpiryDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.expiryDate;
}
function setBackup(address payable _account, uint256 _index, address _backup, uint256 _effective, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.backup = _backup;
b.effectiveDate = _effective;
b.expiryDate = _expiry;
}
function setBackupExpiryDate(address payable _account, uint256 _index, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.expiryDate = _expiry;
}
function clearBackupData(address payable _account, uint256 _index) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete backupData[_account][_index];
}
// *************** delayData ********************** //
function getDelayDataHash(address payable _account, bytes4 _actionId) external view returns(bytes32) {
DelayItem memory item = delayData[_account][_actionId];
return item.hash;
}
function getDelayDataDueTime(address payable _account, bytes4 _actionId) external view returns(uint256) {
DelayItem memory item = delayData[_account][_actionId];
return item.dueTime;
}
function setDelayData(address payable _account, bytes4 _actionId, bytes32 _hash, uint256 _dueTime) external allowAuthorizedLogicContractsCallsOnly(_account) {
DelayItem storage item = delayData[_account][_actionId];
item.hash = _hash;
item.dueTime = _dueTime;
}
function clearDelayData(address payable _account, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete delayData[_account][_actionId];
}
// *************** proposalData ********************** //
function getProposalDataHash(address _client, address _proposer, bytes4 _actionId) external view returns(bytes32) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.hash;
}
function getProposalDataApproval(address _client, address _proposer, bytes4 _actionId) external view returns(address[] memory) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.approval;
}
function setProposalData(address payable _client, address _proposer, bytes4 _actionId, bytes32 _hash, address _approvedBackup)
external
allowAuthorizedLogicContractsCallsOnly(_client)
{
Proposal storage p = proposalData[_client][_proposer][_actionId];
if (p.hash > 0) {
if (p.hash == _hash) {
for (uint256 i = 0; i < p.approval.length; i++) {
require(p.approval[i] != _approvedBackup, "backup already exists");
}
p.approval.push(_approvedBackup);
} else {
p.hash = _hash;
p.approval.length = 0;
}
} else {
p.hash = _hash;
p.approval.push(_approvedBackup);
}
}
function clearProposalData(address payable _client, address _proposer, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_client) {
delete proposalData[_client][_proposer][_actionId];
}
// *************** init ********************** //
function initAccount(Account _account, address[] calldata _keys, address[] calldata _backups)
external
allowAccountCallsOnly(_account)
{
require(getKeyData(address(_account), 0) == address(0), "AccountStorage: account already initialized!");
require(_keys.length > 0, "empty keys array");
operationKeyCount[address(_account)] = _keys.length - 1;
for (uint256 index = 0; index < _keys.length; index++) {
address _key = _keys[index];
require(_key != address(0), "_key cannot be 0x0");
KeyItem storage item = keyData[address(_account)][index];
item.pubKey = _key;
item.status = 0;
}
// avoid backup duplication if _backups.length > 1
// normally won't check duplication, in most cases only one initial backup when initialization
if (_backups.length > 1) {
address[] memory bkps = _backups;
for (uint256 i = 0; i < _backups.length; i++) {
for (uint256 j = 0; j < i; j++) {
require(bkps[j] != _backups[i], "duplicate backup");
}
}
}
for (uint256 index = 0; index < _backups.length; index++) {
address _backup = _backups[index];
require(_backup != address(0), "backup cannot be 0x0");
require(_backup != address(_account), "cannot be backup of oneself");
backupData[address(_account)][index] = BackupAccount(_backup, now, uint256(-1));
}
}
} | getKeyData | function getKeyData(address _account, uint256 _index) public view returns(address) {
KeyItem memory item = keyData[_account][_index];
return item.pubKey;
}
| // *************** keyData ********************** // | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
2051,
2234
]
} | 2,793 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | AccountStorage | contract AccountStorage {
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
modifier allowAuthorizedLogicContractsCallsOnly(address payable _account) {
require(LogicManager(Account(_account).manager()).isAuthorized(msg.sender), "not an authorized logic");
_;
}
struct KeyItem {
address pubKey;
uint256 status;
}
struct BackupAccount {
address backup;
uint256 effectiveDate;//means not effective until this timestamp
uint256 expiryDate;//means effective until this timestamp
}
struct DelayItem {
bytes32 hash;
uint256 dueTime;
}
struct Proposal {
bytes32 hash;
address[] approval;
}
// account => quantity of operation keys (index >= 1)
mapping (address => uint256) operationKeyCount;
// account => index => KeyItem
mapping (address => mapping(uint256 => KeyItem)) keyData;
// account => index => backup account
mapping (address => mapping(uint256 => BackupAccount)) backupData;
/* account => actionId => DelayItem
delayData applies to these 4 actions:
changeAdminKey, changeAllOperationKeys, unfreeze, changeAdminKeyByBackup
*/
mapping (address => mapping(bytes4 => DelayItem)) delayData;
// client account => proposer account => proposed actionId => Proposal
mapping (address => mapping(address => mapping(bytes4 => Proposal))) proposalData;
// *************** keyCount ********************** //
function getOperationKeyCount(address _account) external view returns(uint256) {
return operationKeyCount[_account];
}
function increaseKeyCount(address payable _account) external allowAuthorizedLogicContractsCallsOnly(_account) {
operationKeyCount[_account] = operationKeyCount[_account] + 1;
}
// *************** keyData ********************** //
function getKeyData(address _account, uint256 _index) public view returns(address) {
KeyItem memory item = keyData[_account][_index];
return item.pubKey;
}
function setKeyData(address payable _account, uint256 _index, address _key) external allowAuthorizedLogicContractsCallsOnly(_account) {
require(_key != address(0), "invalid _key value");
KeyItem storage item = keyData[_account][_index];
item.pubKey = _key;
}
// *************** keyStatus ********************** //
function getKeyStatus(address _account, uint256 _index) external view returns(uint256) {
KeyItem memory item = keyData[_account][_index];
return item.status;
}
function setKeyStatus(address payable _account, uint256 _index, uint256 _status) external allowAuthorizedLogicContractsCallsOnly(_account) {
KeyItem storage item = keyData[_account][_index];
item.status = _status;
}
// *************** backupData ********************** //
function getBackupAddress(address _account, uint256 _index) external view returns(address) {
BackupAccount memory b = backupData[_account][_index];
return b.backup;
}
function getBackupEffectiveDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.effectiveDate;
}
function getBackupExpiryDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.expiryDate;
}
function setBackup(address payable _account, uint256 _index, address _backup, uint256 _effective, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.backup = _backup;
b.effectiveDate = _effective;
b.expiryDate = _expiry;
}
function setBackupExpiryDate(address payable _account, uint256 _index, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.expiryDate = _expiry;
}
function clearBackupData(address payable _account, uint256 _index) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete backupData[_account][_index];
}
// *************** delayData ********************** //
function getDelayDataHash(address payable _account, bytes4 _actionId) external view returns(bytes32) {
DelayItem memory item = delayData[_account][_actionId];
return item.hash;
}
function getDelayDataDueTime(address payable _account, bytes4 _actionId) external view returns(uint256) {
DelayItem memory item = delayData[_account][_actionId];
return item.dueTime;
}
function setDelayData(address payable _account, bytes4 _actionId, bytes32 _hash, uint256 _dueTime) external allowAuthorizedLogicContractsCallsOnly(_account) {
DelayItem storage item = delayData[_account][_actionId];
item.hash = _hash;
item.dueTime = _dueTime;
}
function clearDelayData(address payable _account, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete delayData[_account][_actionId];
}
// *************** proposalData ********************** //
function getProposalDataHash(address _client, address _proposer, bytes4 _actionId) external view returns(bytes32) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.hash;
}
function getProposalDataApproval(address _client, address _proposer, bytes4 _actionId) external view returns(address[] memory) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.approval;
}
function setProposalData(address payable _client, address _proposer, bytes4 _actionId, bytes32 _hash, address _approvedBackup)
external
allowAuthorizedLogicContractsCallsOnly(_client)
{
Proposal storage p = proposalData[_client][_proposer][_actionId];
if (p.hash > 0) {
if (p.hash == _hash) {
for (uint256 i = 0; i < p.approval.length; i++) {
require(p.approval[i] != _approvedBackup, "backup already exists");
}
p.approval.push(_approvedBackup);
} else {
p.hash = _hash;
p.approval.length = 0;
}
} else {
p.hash = _hash;
p.approval.push(_approvedBackup);
}
}
function clearProposalData(address payable _client, address _proposer, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_client) {
delete proposalData[_client][_proposer][_actionId];
}
// *************** init ********************** //
function initAccount(Account _account, address[] calldata _keys, address[] calldata _backups)
external
allowAccountCallsOnly(_account)
{
require(getKeyData(address(_account), 0) == address(0), "AccountStorage: account already initialized!");
require(_keys.length > 0, "empty keys array");
operationKeyCount[address(_account)] = _keys.length - 1;
for (uint256 index = 0; index < _keys.length; index++) {
address _key = _keys[index];
require(_key != address(0), "_key cannot be 0x0");
KeyItem storage item = keyData[address(_account)][index];
item.pubKey = _key;
item.status = 0;
}
// avoid backup duplication if _backups.length > 1
// normally won't check duplication, in most cases only one initial backup when initialization
if (_backups.length > 1) {
address[] memory bkps = _backups;
for (uint256 i = 0; i < _backups.length; i++) {
for (uint256 j = 0; j < i; j++) {
require(bkps[j] != _backups[i], "duplicate backup");
}
}
}
for (uint256 index = 0; index < _backups.length; index++) {
address _backup = _backups[index];
require(_backup != address(0), "backup cannot be 0x0");
require(_backup != address(_account), "cannot be backup of oneself");
backupData[address(_account)][index] = BackupAccount(_backup, now, uint256(-1));
}
}
} | getKeyStatus | function getKeyStatus(address _account, uint256 _index) external view returns(uint256) {
KeyItem memory item = keyData[_account][_index];
return item.status;
}
| // *************** keyStatus ********************** // | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
2597,
2784
]
} | 2,794 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | AccountStorage | contract AccountStorage {
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
modifier allowAuthorizedLogicContractsCallsOnly(address payable _account) {
require(LogicManager(Account(_account).manager()).isAuthorized(msg.sender), "not an authorized logic");
_;
}
struct KeyItem {
address pubKey;
uint256 status;
}
struct BackupAccount {
address backup;
uint256 effectiveDate;//means not effective until this timestamp
uint256 expiryDate;//means effective until this timestamp
}
struct DelayItem {
bytes32 hash;
uint256 dueTime;
}
struct Proposal {
bytes32 hash;
address[] approval;
}
// account => quantity of operation keys (index >= 1)
mapping (address => uint256) operationKeyCount;
// account => index => KeyItem
mapping (address => mapping(uint256 => KeyItem)) keyData;
// account => index => backup account
mapping (address => mapping(uint256 => BackupAccount)) backupData;
/* account => actionId => DelayItem
delayData applies to these 4 actions:
changeAdminKey, changeAllOperationKeys, unfreeze, changeAdminKeyByBackup
*/
mapping (address => mapping(bytes4 => DelayItem)) delayData;
// client account => proposer account => proposed actionId => Proposal
mapping (address => mapping(address => mapping(bytes4 => Proposal))) proposalData;
// *************** keyCount ********************** //
function getOperationKeyCount(address _account) external view returns(uint256) {
return operationKeyCount[_account];
}
function increaseKeyCount(address payable _account) external allowAuthorizedLogicContractsCallsOnly(_account) {
operationKeyCount[_account] = operationKeyCount[_account] + 1;
}
// *************** keyData ********************** //
function getKeyData(address _account, uint256 _index) public view returns(address) {
KeyItem memory item = keyData[_account][_index];
return item.pubKey;
}
function setKeyData(address payable _account, uint256 _index, address _key) external allowAuthorizedLogicContractsCallsOnly(_account) {
require(_key != address(0), "invalid _key value");
KeyItem storage item = keyData[_account][_index];
item.pubKey = _key;
}
// *************** keyStatus ********************** //
function getKeyStatus(address _account, uint256 _index) external view returns(uint256) {
KeyItem memory item = keyData[_account][_index];
return item.status;
}
function setKeyStatus(address payable _account, uint256 _index, uint256 _status) external allowAuthorizedLogicContractsCallsOnly(_account) {
KeyItem storage item = keyData[_account][_index];
item.status = _status;
}
// *************** backupData ********************** //
function getBackupAddress(address _account, uint256 _index) external view returns(address) {
BackupAccount memory b = backupData[_account][_index];
return b.backup;
}
function getBackupEffectiveDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.effectiveDate;
}
function getBackupExpiryDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.expiryDate;
}
function setBackup(address payable _account, uint256 _index, address _backup, uint256 _effective, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.backup = _backup;
b.effectiveDate = _effective;
b.expiryDate = _expiry;
}
function setBackupExpiryDate(address payable _account, uint256 _index, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.expiryDate = _expiry;
}
function clearBackupData(address payable _account, uint256 _index) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete backupData[_account][_index];
}
// *************** delayData ********************** //
function getDelayDataHash(address payable _account, bytes4 _actionId) external view returns(bytes32) {
DelayItem memory item = delayData[_account][_actionId];
return item.hash;
}
function getDelayDataDueTime(address payable _account, bytes4 _actionId) external view returns(uint256) {
DelayItem memory item = delayData[_account][_actionId];
return item.dueTime;
}
function setDelayData(address payable _account, bytes4 _actionId, bytes32 _hash, uint256 _dueTime) external allowAuthorizedLogicContractsCallsOnly(_account) {
DelayItem storage item = delayData[_account][_actionId];
item.hash = _hash;
item.dueTime = _dueTime;
}
function clearDelayData(address payable _account, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete delayData[_account][_actionId];
}
// *************** proposalData ********************** //
function getProposalDataHash(address _client, address _proposer, bytes4 _actionId) external view returns(bytes32) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.hash;
}
function getProposalDataApproval(address _client, address _proposer, bytes4 _actionId) external view returns(address[] memory) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.approval;
}
function setProposalData(address payable _client, address _proposer, bytes4 _actionId, bytes32 _hash, address _approvedBackup)
external
allowAuthorizedLogicContractsCallsOnly(_client)
{
Proposal storage p = proposalData[_client][_proposer][_actionId];
if (p.hash > 0) {
if (p.hash == _hash) {
for (uint256 i = 0; i < p.approval.length; i++) {
require(p.approval[i] != _approvedBackup, "backup already exists");
}
p.approval.push(_approvedBackup);
} else {
p.hash = _hash;
p.approval.length = 0;
}
} else {
p.hash = _hash;
p.approval.push(_approvedBackup);
}
}
function clearProposalData(address payable _client, address _proposer, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_client) {
delete proposalData[_client][_proposer][_actionId];
}
// *************** init ********************** //
function initAccount(Account _account, address[] calldata _keys, address[] calldata _backups)
external
allowAccountCallsOnly(_account)
{
require(getKeyData(address(_account), 0) == address(0), "AccountStorage: account already initialized!");
require(_keys.length > 0, "empty keys array");
operationKeyCount[address(_account)] = _keys.length - 1;
for (uint256 index = 0; index < _keys.length; index++) {
address _key = _keys[index];
require(_key != address(0), "_key cannot be 0x0");
KeyItem storage item = keyData[address(_account)][index];
item.pubKey = _key;
item.status = 0;
}
// avoid backup duplication if _backups.length > 1
// normally won't check duplication, in most cases only one initial backup when initialization
if (_backups.length > 1) {
address[] memory bkps = _backups;
for (uint256 i = 0; i < _backups.length; i++) {
for (uint256 j = 0; j < i; j++) {
require(bkps[j] != _backups[i], "duplicate backup");
}
}
}
for (uint256 index = 0; index < _backups.length; index++) {
address _backup = _backups[index];
require(_backup != address(0), "backup cannot be 0x0");
require(_backup != address(_account), "cannot be backup of oneself");
backupData[address(_account)][index] = BackupAccount(_backup, now, uint256(-1));
}
}
} | getBackupAddress | function getBackupAddress(address _account, uint256 _index) external view returns(address) {
BackupAccount memory b = backupData[_account][_index];
return b.backup;
}
| // *************** backupData ********************** // | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
3096,
3290
]
} | 2,795 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | AccountStorage | contract AccountStorage {
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
modifier allowAuthorizedLogicContractsCallsOnly(address payable _account) {
require(LogicManager(Account(_account).manager()).isAuthorized(msg.sender), "not an authorized logic");
_;
}
struct KeyItem {
address pubKey;
uint256 status;
}
struct BackupAccount {
address backup;
uint256 effectiveDate;//means not effective until this timestamp
uint256 expiryDate;//means effective until this timestamp
}
struct DelayItem {
bytes32 hash;
uint256 dueTime;
}
struct Proposal {
bytes32 hash;
address[] approval;
}
// account => quantity of operation keys (index >= 1)
mapping (address => uint256) operationKeyCount;
// account => index => KeyItem
mapping (address => mapping(uint256 => KeyItem)) keyData;
// account => index => backup account
mapping (address => mapping(uint256 => BackupAccount)) backupData;
/* account => actionId => DelayItem
delayData applies to these 4 actions:
changeAdminKey, changeAllOperationKeys, unfreeze, changeAdminKeyByBackup
*/
mapping (address => mapping(bytes4 => DelayItem)) delayData;
// client account => proposer account => proposed actionId => Proposal
mapping (address => mapping(address => mapping(bytes4 => Proposal))) proposalData;
// *************** keyCount ********************** //
function getOperationKeyCount(address _account) external view returns(uint256) {
return operationKeyCount[_account];
}
function increaseKeyCount(address payable _account) external allowAuthorizedLogicContractsCallsOnly(_account) {
operationKeyCount[_account] = operationKeyCount[_account] + 1;
}
// *************** keyData ********************** //
function getKeyData(address _account, uint256 _index) public view returns(address) {
KeyItem memory item = keyData[_account][_index];
return item.pubKey;
}
function setKeyData(address payable _account, uint256 _index, address _key) external allowAuthorizedLogicContractsCallsOnly(_account) {
require(_key != address(0), "invalid _key value");
KeyItem storage item = keyData[_account][_index];
item.pubKey = _key;
}
// *************** keyStatus ********************** //
function getKeyStatus(address _account, uint256 _index) external view returns(uint256) {
KeyItem memory item = keyData[_account][_index];
return item.status;
}
function setKeyStatus(address payable _account, uint256 _index, uint256 _status) external allowAuthorizedLogicContractsCallsOnly(_account) {
KeyItem storage item = keyData[_account][_index];
item.status = _status;
}
// *************** backupData ********************** //
function getBackupAddress(address _account, uint256 _index) external view returns(address) {
BackupAccount memory b = backupData[_account][_index];
return b.backup;
}
function getBackupEffectiveDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.effectiveDate;
}
function getBackupExpiryDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.expiryDate;
}
function setBackup(address payable _account, uint256 _index, address _backup, uint256 _effective, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.backup = _backup;
b.effectiveDate = _effective;
b.expiryDate = _expiry;
}
function setBackupExpiryDate(address payable _account, uint256 _index, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.expiryDate = _expiry;
}
function clearBackupData(address payable _account, uint256 _index) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete backupData[_account][_index];
}
// *************** delayData ********************** //
function getDelayDataHash(address payable _account, bytes4 _actionId) external view returns(bytes32) {
DelayItem memory item = delayData[_account][_actionId];
return item.hash;
}
function getDelayDataDueTime(address payable _account, bytes4 _actionId) external view returns(uint256) {
DelayItem memory item = delayData[_account][_actionId];
return item.dueTime;
}
function setDelayData(address payable _account, bytes4 _actionId, bytes32 _hash, uint256 _dueTime) external allowAuthorizedLogicContractsCallsOnly(_account) {
DelayItem storage item = delayData[_account][_actionId];
item.hash = _hash;
item.dueTime = _dueTime;
}
function clearDelayData(address payable _account, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete delayData[_account][_actionId];
}
// *************** proposalData ********************** //
function getProposalDataHash(address _client, address _proposer, bytes4 _actionId) external view returns(bytes32) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.hash;
}
function getProposalDataApproval(address _client, address _proposer, bytes4 _actionId) external view returns(address[] memory) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.approval;
}
function setProposalData(address payable _client, address _proposer, bytes4 _actionId, bytes32 _hash, address _approvedBackup)
external
allowAuthorizedLogicContractsCallsOnly(_client)
{
Proposal storage p = proposalData[_client][_proposer][_actionId];
if (p.hash > 0) {
if (p.hash == _hash) {
for (uint256 i = 0; i < p.approval.length; i++) {
require(p.approval[i] != _approvedBackup, "backup already exists");
}
p.approval.push(_approvedBackup);
} else {
p.hash = _hash;
p.approval.length = 0;
}
} else {
p.hash = _hash;
p.approval.push(_approvedBackup);
}
}
function clearProposalData(address payable _client, address _proposer, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_client) {
delete proposalData[_client][_proposer][_actionId];
}
// *************** init ********************** //
function initAccount(Account _account, address[] calldata _keys, address[] calldata _backups)
external
allowAccountCallsOnly(_account)
{
require(getKeyData(address(_account), 0) == address(0), "AccountStorage: account already initialized!");
require(_keys.length > 0, "empty keys array");
operationKeyCount[address(_account)] = _keys.length - 1;
for (uint256 index = 0; index < _keys.length; index++) {
address _key = _keys[index];
require(_key != address(0), "_key cannot be 0x0");
KeyItem storage item = keyData[address(_account)][index];
item.pubKey = _key;
item.status = 0;
}
// avoid backup duplication if _backups.length > 1
// normally won't check duplication, in most cases only one initial backup when initialization
if (_backups.length > 1) {
address[] memory bkps = _backups;
for (uint256 i = 0; i < _backups.length; i++) {
for (uint256 j = 0; j < i; j++) {
require(bkps[j] != _backups[i], "duplicate backup");
}
}
}
for (uint256 index = 0; index < _backups.length; index++) {
address _backup = _backups[index];
require(_backup != address(0), "backup cannot be 0x0");
require(_backup != address(_account), "cannot be backup of oneself");
backupData[address(_account)][index] = BackupAccount(_backup, now, uint256(-1));
}
}
} | getDelayDataHash | function getDelayDataHash(address payable _account, bytes4 _actionId) external view returns(bytes32) {
DelayItem memory item = delayData[_account][_actionId];
return item.hash;
}
| // *************** delayData ********************** // | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
4617,
4823
]
} | 2,796 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | AccountStorage | contract AccountStorage {
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
modifier allowAuthorizedLogicContractsCallsOnly(address payable _account) {
require(LogicManager(Account(_account).manager()).isAuthorized(msg.sender), "not an authorized logic");
_;
}
struct KeyItem {
address pubKey;
uint256 status;
}
struct BackupAccount {
address backup;
uint256 effectiveDate;//means not effective until this timestamp
uint256 expiryDate;//means effective until this timestamp
}
struct DelayItem {
bytes32 hash;
uint256 dueTime;
}
struct Proposal {
bytes32 hash;
address[] approval;
}
// account => quantity of operation keys (index >= 1)
mapping (address => uint256) operationKeyCount;
// account => index => KeyItem
mapping (address => mapping(uint256 => KeyItem)) keyData;
// account => index => backup account
mapping (address => mapping(uint256 => BackupAccount)) backupData;
/* account => actionId => DelayItem
delayData applies to these 4 actions:
changeAdminKey, changeAllOperationKeys, unfreeze, changeAdminKeyByBackup
*/
mapping (address => mapping(bytes4 => DelayItem)) delayData;
// client account => proposer account => proposed actionId => Proposal
mapping (address => mapping(address => mapping(bytes4 => Proposal))) proposalData;
// *************** keyCount ********************** //
function getOperationKeyCount(address _account) external view returns(uint256) {
return operationKeyCount[_account];
}
function increaseKeyCount(address payable _account) external allowAuthorizedLogicContractsCallsOnly(_account) {
operationKeyCount[_account] = operationKeyCount[_account] + 1;
}
// *************** keyData ********************** //
function getKeyData(address _account, uint256 _index) public view returns(address) {
KeyItem memory item = keyData[_account][_index];
return item.pubKey;
}
function setKeyData(address payable _account, uint256 _index, address _key) external allowAuthorizedLogicContractsCallsOnly(_account) {
require(_key != address(0), "invalid _key value");
KeyItem storage item = keyData[_account][_index];
item.pubKey = _key;
}
// *************** keyStatus ********************** //
function getKeyStatus(address _account, uint256 _index) external view returns(uint256) {
KeyItem memory item = keyData[_account][_index];
return item.status;
}
function setKeyStatus(address payable _account, uint256 _index, uint256 _status) external allowAuthorizedLogicContractsCallsOnly(_account) {
KeyItem storage item = keyData[_account][_index];
item.status = _status;
}
// *************** backupData ********************** //
function getBackupAddress(address _account, uint256 _index) external view returns(address) {
BackupAccount memory b = backupData[_account][_index];
return b.backup;
}
function getBackupEffectiveDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.effectiveDate;
}
function getBackupExpiryDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.expiryDate;
}
function setBackup(address payable _account, uint256 _index, address _backup, uint256 _effective, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.backup = _backup;
b.effectiveDate = _effective;
b.expiryDate = _expiry;
}
function setBackupExpiryDate(address payable _account, uint256 _index, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.expiryDate = _expiry;
}
function clearBackupData(address payable _account, uint256 _index) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete backupData[_account][_index];
}
// *************** delayData ********************** //
function getDelayDataHash(address payable _account, bytes4 _actionId) external view returns(bytes32) {
DelayItem memory item = delayData[_account][_actionId];
return item.hash;
}
function getDelayDataDueTime(address payable _account, bytes4 _actionId) external view returns(uint256) {
DelayItem memory item = delayData[_account][_actionId];
return item.dueTime;
}
function setDelayData(address payable _account, bytes4 _actionId, bytes32 _hash, uint256 _dueTime) external allowAuthorizedLogicContractsCallsOnly(_account) {
DelayItem storage item = delayData[_account][_actionId];
item.hash = _hash;
item.dueTime = _dueTime;
}
function clearDelayData(address payable _account, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete delayData[_account][_actionId];
}
// *************** proposalData ********************** //
function getProposalDataHash(address _client, address _proposer, bytes4 _actionId) external view returns(bytes32) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.hash;
}
function getProposalDataApproval(address _client, address _proposer, bytes4 _actionId) external view returns(address[] memory) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.approval;
}
function setProposalData(address payable _client, address _proposer, bytes4 _actionId, bytes32 _hash, address _approvedBackup)
external
allowAuthorizedLogicContractsCallsOnly(_client)
{
Proposal storage p = proposalData[_client][_proposer][_actionId];
if (p.hash > 0) {
if (p.hash == _hash) {
for (uint256 i = 0; i < p.approval.length; i++) {
require(p.approval[i] != _approvedBackup, "backup already exists");
}
p.approval.push(_approvedBackup);
} else {
p.hash = _hash;
p.approval.length = 0;
}
} else {
p.hash = _hash;
p.approval.push(_approvedBackup);
}
}
function clearProposalData(address payable _client, address _proposer, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_client) {
delete proposalData[_client][_proposer][_actionId];
}
// *************** init ********************** //
function initAccount(Account _account, address[] calldata _keys, address[] calldata _backups)
external
allowAccountCallsOnly(_account)
{
require(getKeyData(address(_account), 0) == address(0), "AccountStorage: account already initialized!");
require(_keys.length > 0, "empty keys array");
operationKeyCount[address(_account)] = _keys.length - 1;
for (uint256 index = 0; index < _keys.length; index++) {
address _key = _keys[index];
require(_key != address(0), "_key cannot be 0x0");
KeyItem storage item = keyData[address(_account)][index];
item.pubKey = _key;
item.status = 0;
}
// avoid backup duplication if _backups.length > 1
// normally won't check duplication, in most cases only one initial backup when initialization
if (_backups.length > 1) {
address[] memory bkps = _backups;
for (uint256 i = 0; i < _backups.length; i++) {
for (uint256 j = 0; j < i; j++) {
require(bkps[j] != _backups[i], "duplicate backup");
}
}
}
for (uint256 index = 0; index < _backups.length; index++) {
address _backup = _backups[index];
require(_backup != address(0), "backup cannot be 0x0");
require(_backup != address(_account), "cannot be backup of oneself");
backupData[address(_account)][index] = BackupAccount(_backup, now, uint256(-1));
}
}
} | getProposalDataHash | function getProposalDataHash(address _client, address _proposer, bytes4 _actionId) external view returns(bytes32) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.hash;
}
| // *************** proposalData ********************** // | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
5597,
5822
]
} | 2,797 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | AccountStorage | contract AccountStorage {
modifier allowAccountCallsOnly(Account _account) {
require(msg.sender == address(_account), "caller must be account");
_;
}
modifier allowAuthorizedLogicContractsCallsOnly(address payable _account) {
require(LogicManager(Account(_account).manager()).isAuthorized(msg.sender), "not an authorized logic");
_;
}
struct KeyItem {
address pubKey;
uint256 status;
}
struct BackupAccount {
address backup;
uint256 effectiveDate;//means not effective until this timestamp
uint256 expiryDate;//means effective until this timestamp
}
struct DelayItem {
bytes32 hash;
uint256 dueTime;
}
struct Proposal {
bytes32 hash;
address[] approval;
}
// account => quantity of operation keys (index >= 1)
mapping (address => uint256) operationKeyCount;
// account => index => KeyItem
mapping (address => mapping(uint256 => KeyItem)) keyData;
// account => index => backup account
mapping (address => mapping(uint256 => BackupAccount)) backupData;
/* account => actionId => DelayItem
delayData applies to these 4 actions:
changeAdminKey, changeAllOperationKeys, unfreeze, changeAdminKeyByBackup
*/
mapping (address => mapping(bytes4 => DelayItem)) delayData;
// client account => proposer account => proposed actionId => Proposal
mapping (address => mapping(address => mapping(bytes4 => Proposal))) proposalData;
// *************** keyCount ********************** //
function getOperationKeyCount(address _account) external view returns(uint256) {
return operationKeyCount[_account];
}
function increaseKeyCount(address payable _account) external allowAuthorizedLogicContractsCallsOnly(_account) {
operationKeyCount[_account] = operationKeyCount[_account] + 1;
}
// *************** keyData ********************** //
function getKeyData(address _account, uint256 _index) public view returns(address) {
KeyItem memory item = keyData[_account][_index];
return item.pubKey;
}
function setKeyData(address payable _account, uint256 _index, address _key) external allowAuthorizedLogicContractsCallsOnly(_account) {
require(_key != address(0), "invalid _key value");
KeyItem storage item = keyData[_account][_index];
item.pubKey = _key;
}
// *************** keyStatus ********************** //
function getKeyStatus(address _account, uint256 _index) external view returns(uint256) {
KeyItem memory item = keyData[_account][_index];
return item.status;
}
function setKeyStatus(address payable _account, uint256 _index, uint256 _status) external allowAuthorizedLogicContractsCallsOnly(_account) {
KeyItem storage item = keyData[_account][_index];
item.status = _status;
}
// *************** backupData ********************** //
function getBackupAddress(address _account, uint256 _index) external view returns(address) {
BackupAccount memory b = backupData[_account][_index];
return b.backup;
}
function getBackupEffectiveDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.effectiveDate;
}
function getBackupExpiryDate(address _account, uint256 _index) external view returns(uint256) {
BackupAccount memory b = backupData[_account][_index];
return b.expiryDate;
}
function setBackup(address payable _account, uint256 _index, address _backup, uint256 _effective, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.backup = _backup;
b.effectiveDate = _effective;
b.expiryDate = _expiry;
}
function setBackupExpiryDate(address payable _account, uint256 _index, uint256 _expiry)
external
allowAuthorizedLogicContractsCallsOnly(_account)
{
BackupAccount storage b = backupData[_account][_index];
b.expiryDate = _expiry;
}
function clearBackupData(address payable _account, uint256 _index) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete backupData[_account][_index];
}
// *************** delayData ********************** //
function getDelayDataHash(address payable _account, bytes4 _actionId) external view returns(bytes32) {
DelayItem memory item = delayData[_account][_actionId];
return item.hash;
}
function getDelayDataDueTime(address payable _account, bytes4 _actionId) external view returns(uint256) {
DelayItem memory item = delayData[_account][_actionId];
return item.dueTime;
}
function setDelayData(address payable _account, bytes4 _actionId, bytes32 _hash, uint256 _dueTime) external allowAuthorizedLogicContractsCallsOnly(_account) {
DelayItem storage item = delayData[_account][_actionId];
item.hash = _hash;
item.dueTime = _dueTime;
}
function clearDelayData(address payable _account, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_account) {
delete delayData[_account][_actionId];
}
// *************** proposalData ********************** //
function getProposalDataHash(address _client, address _proposer, bytes4 _actionId) external view returns(bytes32) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.hash;
}
function getProposalDataApproval(address _client, address _proposer, bytes4 _actionId) external view returns(address[] memory) {
Proposal memory p = proposalData[_client][_proposer][_actionId];
return p.approval;
}
function setProposalData(address payable _client, address _proposer, bytes4 _actionId, bytes32 _hash, address _approvedBackup)
external
allowAuthorizedLogicContractsCallsOnly(_client)
{
Proposal storage p = proposalData[_client][_proposer][_actionId];
if (p.hash > 0) {
if (p.hash == _hash) {
for (uint256 i = 0; i < p.approval.length; i++) {
require(p.approval[i] != _approvedBackup, "backup already exists");
}
p.approval.push(_approvedBackup);
} else {
p.hash = _hash;
p.approval.length = 0;
}
} else {
p.hash = _hash;
p.approval.push(_approvedBackup);
}
}
function clearProposalData(address payable _client, address _proposer, bytes4 _actionId) external allowAuthorizedLogicContractsCallsOnly(_client) {
delete proposalData[_client][_proposer][_actionId];
}
// *************** init ********************** //
function initAccount(Account _account, address[] calldata _keys, address[] calldata _backups)
external
allowAccountCallsOnly(_account)
{
require(getKeyData(address(_account), 0) == address(0), "AccountStorage: account already initialized!");
require(_keys.length > 0, "empty keys array");
operationKeyCount[address(_account)] = _keys.length - 1;
for (uint256 index = 0; index < _keys.length; index++) {
address _key = _keys[index];
require(_key != address(0), "_key cannot be 0x0");
KeyItem storage item = keyData[address(_account)][index];
item.pubKey = _key;
item.status = 0;
}
// avoid backup duplication if _backups.length > 1
// normally won't check duplication, in most cases only one initial backup when initialization
if (_backups.length > 1) {
address[] memory bkps = _backups;
for (uint256 i = 0; i < _backups.length; i++) {
for (uint256 j = 0; j < i; j++) {
require(bkps[j] != _backups[i], "duplicate backup");
}
}
}
for (uint256 index = 0; index < _backups.length; index++) {
address _backup = _backups[index];
require(_backup != address(0), "backup cannot be 0x0");
require(_backup != address(_account), "cannot be backup of oneself");
backupData[address(_account)][index] = BackupAccount(_backup, now, uint256(-1));
}
}
} | initAccount | function initAccount(Account _account, address[] calldata _keys, address[] calldata _backups)
external
allowAccountCallsOnly(_account)
{
require(getKeyData(address(_account), 0) == address(0), "AccountStorage: account already initialized!");
require(_keys.length > 0, "empty keys array");
operationKeyCount[address(_account)] = _keys.length - 1;
for (uint256 index = 0; index < _keys.length; index++) {
address _key = _keys[index];
require(_key != address(0), "_key cannot be 0x0");
KeyItem storage item = keyData[address(_account)][index];
item.pubKey = _key;
item.status = 0;
}
// avoid backup duplication if _backups.length > 1
// normally won't check duplication, in most cases only one initial backup when initialization
if (_backups.length > 1) {
address[] memory bkps = _backups;
for (uint256 i = 0; i < _backups.length; i++) {
for (uint256 j = 0; j < i; j++) {
require(bkps[j] != _backups[i], "duplicate backup");
}
}
}
for (uint256 index = 0; index < _backups.length; index++) {
address _backup = _backups[index];
require(_backup != address(0), "backup cannot be 0x0");
require(_backup != address(_account), "cannot be backup of oneself");
backupData[address(_account)][index] = BackupAccount(_backup, now, uint256(-1));
}
}
| // *************** init ********************** // | LineComment | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
7152,
8738
]
} | 2,798 |
||
Account | Account.sol | 0x2ed747ed395cfd40ff750fdfa351b229d67c8c01 | Solidity | Account | contract Account {
// The implementation of the proxy
address public implementation;
// Logic manager
address public manager;
// The enabled static calls
mapping (bytes4 => address) public enabled;
event EnabledStaticCall(address indexed module, bytes4 indexed method);
event Invoked(address indexed module, address indexed target, uint indexed value, bytes data);
event Received(uint indexed value, address indexed sender, bytes data);
event AccountInit(address indexed account);
event ManagerChanged(address indexed mgr);
modifier allowAuthorizedLogicContractsCallsOnly {
require(LogicManager(manager).isAuthorized(msg.sender), "not an authorized logic");
_;
}
function init(address _manager, address _accountStorage, address[] calldata _logics, address[] calldata _keys, address[] calldata _backups)
external
{
require(manager == address(0), "Account: account already initialized");
require(_manager != address(0) && _accountStorage != address(0), "Account: address is null");
manager = _manager;
for (uint i = 0; i < _logics.length; i++) {
address logic = _logics[i];
require(LogicManager(manager).isAuthorized(logic), "must be authorized logic");
BaseLogic(logic).initAccount(this);
}
AccountStorage(_accountStorage).initAccount(this, _keys, _backups);
emit AccountInit(address(this));
}
function invoke(address _target, uint _value, bytes calldata _data)
external
allowAuthorizedLogicContractsCallsOnly
returns (bytes memory _res)
{
bool success;
// solium-disable-next-line security/no-call-value
(success, _res) = _target.call.value(_value)(_data);
require(success, "call to target failed");
emit Invoked(msg.sender, _target, _value, _data);
}
/**
* @dev Enables a static method by specifying the target module to which the call must be delegated.
* @param _module The target module.
* @param _method The static method signature.
*/
function enableStaticCall(address _module, bytes4 _method) external allowAuthorizedLogicContractsCallsOnly {
enabled[_method] = _module;
emit EnabledStaticCall(_module, _method);
}
function changeManager(address _newMgr) external allowAuthorizedLogicContractsCallsOnly {
require(_newMgr != address(0), "address cannot be null");
require(_newMgr != manager, "already changed");
manager = _newMgr;
emit ManagerChanged(_newMgr);
}
/**
* @dev This method makes it possible for the wallet to comply to interfaces expecting the wallet to
* implement specific static methods. It delegates the static call to a target contract if the data corresponds
* to an enabled method, or logs the call otherwise.
*/
function() external payable {
if(msg.data.length > 0) {
address logic = enabled[msg.sig];
if(logic == address(0)) {
emit Received(msg.value, msg.sender, msg.data);
}
else {
require(LogicManager(manager).isAuthorized(logic), "must be an authorized logic for static call");
// solium-disable-next-line security/no-inline-assembly
assembly {
calldatacopy(0, 0, calldatasize())
let result := staticcall(gas, logic, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
switch result
case 0 {revert(0, returndatasize())}
default {return (0, returndatasize())}
}
}
}
}
} | enableStaticCall | function enableStaticCall(address _module, bytes4 _method) external allowAuthorizedLogicContractsCallsOnly {
enabled[_method] = _module;
emit EnabledStaticCall(_module, _method);
}
| /**
* @dev Enables a static method by specifying the target module to which the call must be delegated.
* @param _module The target module.
* @param _method The static method signature.
*/ | NatSpecMultiLine | v0.5.4+commit.9549d8ff | GNU GPLv3 | bzzr://325ab23acf652cf963ee273c31a40feb195010aef23c1acf8f2f424fa1bd1a26 | {
"func_code_index": [
2193,
2401
]
} | 2,799 |
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