text: // Copyright (c) 2009-2010 Satoshi Nakamoto
  // Copyright (c) 2009-2015 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #ifndef BITCOIN_CHAINPARAMS_H
  #define BITCOIN_CHAINPARAMS_H
  
  #include "chainparamsbase.h"
  #include "consensus/params.h"
  #include "primitives/block.h"
  #include "protocol.h"
  
  #include <vector>
  
  struct CDNSSeedData {
      std::string name, host;
      bool supportsServiceBitsFiltering;
      CDNSSeedData(const std::string &strName, const std::string &strHost, bool supportsServiceBitsFilteringIn = false) : name(strName), host(strHost), supportsServiceBitsFiltering(supportsServiceBitsFilteringIn) {}
  };
  
  struct SeedSpec6 {
      uint8_t addr[16];
      uint16_t port;
  };
  
  typedef std::map<int, uint256> MapCheckpoints;
  
  struct CCheckpointData {
      MapCheckpoints mapCheckpoints;
  };
  
  struct ChainTxData {
      int64_t nTime;
      int64_t nTxCount;
      double dTxRate;
  };
  
  /**
   * CChainParams defines various tweakable parameters of a given instance of the
   * IcomTech system. There are three: the main network on which people trade goods
   * and services, the public test network which gets reset from time to time and
   * a regression test mode which is intended for private networks only. It has
   * minimal difficulty to ensure that blocks can be found instantly.
   */
  class CChainParams
  {
  public:
      enum Base58Type {
          PUBKEY_ADDRESS,
          SCRIPT_ADDRESS,
          SECRET_KEY,     // BIP16
          EXT_PUBLIC_KEY, // BIP32
          EXT_SECRET_KEY, // BIP32
  
          MAX_BASE58_TYPES
      };
  
      const Consensus::Params& GetConsensus() const { return consensus; }
      const CMessageHeader::MessageStartChars& MessageStart() const { return pchMessageStart; }
      const std::vector<unsigned char>& AlertKey() const { return vAlertPubKey; }
      int GetDefaultPort() const { return nDefaultPort; }
  
      const CBlock& GenesisBlock() const { return genesis; }
      const CBlock& DevNetGenesisBlock() const { return devnetGenesis; }
      /** Make miner wait to have peers to avoid wasting work */
      bool MiningRequiresPeers() const { return fMiningRequiresPeers; }
      /** Default value for -checkmempool and -checkblockindex argument */
      bool DefaultConsistencyChecks() const { return fDefaultConsistencyChecks; }
      /** Policy: Filter transactions that do not match well-defined patterns */
      bool RequireStandard() const { return fRequireStandard; }
      /** Require addresses specified with "-externalip" parameter to be routable */
      bool RequireRoutableExternalIP() const { return fRequireRoutableExternalIP; }
      uint64_t PruneAfterHeight() const { return nPruneAfterHeight; }
      /** Make miner stop after a block is found. In RPC, don't return until nGenProcLimit blocks are generated */
      bool MineBlocksOnDemand() const { return fMineBlocksOnDemand; }
      /** Allow multiple addresses to be selected from the same network group (e.g. 192.168.x.x) */
      bool AllowMultipleAddressesFromGroup() const { return fAllowMultipleAddressesFromGroup; }
      /** Allow nodes with the same address and multiple ports */
      bool AllowMultiplePorts() const { return fAllowMultiplePorts; }
      /** Return the BIP70 network string (main, test or regtest) */
      std::string NetworkIDString() const { return strNetworkID; }
      const std::vector<CDNSSeedData>& DNSSeeds() const { return vSeeds; }
      const std::vector<unsigned char>& Base58Prefix(Base58Type type) const { return base58Prefixes[type]; }
      int ExtCoinType() const { return nExtCoinType; }
      const std::vector<SeedSpec6>& FixedSeeds() const { return vFixedSeeds; }
      const CCheckpointData& Checkpoints() const { return checkpointData; }
      const ChainTxData& TxData() const { return chainTxData; }
      int PoolMinParticipants() const { return nPoolMinParticipants; }
      int PoolMaxParticipants() const { return nPoolMaxParticipants; }
      int FulfilledRequestExpireTime() const { return nFulfilledRequestExpireTime; }
      const std::vector<std::string>& SporkAddresses() const { return vSporkAddresses; }
      int MinSporkKeys() const { return nMinSporkKeys; }
      bool BIP9CheckMasternodesUpgraded() const { return fBIP9CheckMasternodesUpgraded; }
  protected:
      CChainParams() {}
  
      Consensus::Params consensus;
      CMessageHeader::MessageStartChars pchMessageStart;
      //! Raw pub key bytes for the broadcast alert signing key.
      std::vector<unsigned char> vAlertPubKey;
      int nDefaultPort;
      uint64_t nPruneAfterHeight;
      std::vector<CDNSSeedData> vSeeds;
      std::vector<unsigned char> base58Prefixes[MAX_BASE58_TYPES];
      int nExtCoinType;
      std::string strNetworkID;
      CBlock genesis;
      CBlock devnetGenesis;
      std::vector<SeedSpec6> vFixedSeeds;
      bool fMiningRequiresPeers;
      bool fDefaultConsistencyChecks;
      bool fRequireStandard;
      bool fRequireRoutableExternalIP;
      bool fMineBlocksOnDemand;
      bool fAllowMultipleAddressesFromGroup;
      bool fAllowMultiplePorts;
      CCheckpointData checkpointData;
      ChainTxData chainTxData;
      int nPoolMinParticipants;
      int nPoolMaxParticipants;
      int nFulfilledRequestExpireTime;
      std::vector<std::string> vSporkAddresses;
      int nMinSporkKeys;
      bool fBIP9CheckMasternodesUpgraded;
  };
  
  /**
   * Return the currently selected parameters. This won't change after app
   * startup, except for unit tests.
   */
  const CChainParams &Params();
  
  /**
   * @returns CChainParams for the given BIP70 chain name.
   */
  CChainParams& Params(const std::string& chain);
  
  /**
   * Sets the params returned by Params() to those for the given BIP70 chain name.
   * @throws std::runtime_error when the chain is not supported.
   */
  void SelectParams(const std::string& chain);
  
  /**
   * Allows modifying the BIP9 regtest parameters.
   */
  void UpdateRegtestBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout, int64_t nWindowSize, int64_t nThreshold);
  
  /**
   * Allows modifying the DIP3 activation and enforcement height
   */
  void UpdateRegtestDIP3Parameters(int nActivationHeight, int nEnforcementHeight);
  
  /**
   * Allows modifying the budget regtest parameters.
   */
  void UpdateRegtestBudgetParameters(int nMasternodePaymentsStartBlock, int nBudgetPaymentsStartBlock, int nSuperblockStartBlock);
  
  /**
   * Allows modifying the subsidy and difficulty devnet parameters.
   */
  void UpdateDevnetSubsidyAndDiffParams(int nMinimumDifficultyBlocks, int nHighSubsidyBlocks, int nHighSubsidyFactor);
  
  /**
   * Allows modifying the LLMQ type for ChainLocks.
   */
  void UpdateDevnetLLMQChainLocks(Consensus::LLMQType llmqType);
  
  #endif // BITCOIN_CHAINPARAMS_H
  