text: // Copyright (c) 2009-2010 Satoshi Nakamoto
  // Copyright (c) 2009-2014 The Bitcoin developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include "primitives/block.h"
  #include "primitives/transaction.h"
  
  #include "chain.h"
  #include "hash.h"
  #include "main.h"
  #include "tinyformat.h"
  #include "utilstrencodings.h"
  
  #include <boost/foreach.hpp>
  
  extern bool GetTransaction(const uint256 &hash, CTransaction &txOut, uint256 &hashBlock, bool fAllowSlow);
  
  std::string COutPoint::ToString() const
  {
      return strprintf("COutPoint(%s, %u)", hash.ToString()/*.substr(0,10)*/, n);
  }
  
  std::string COutPoint::ToStringShort() const
  {
      return strprintf("%s-%u", hash.ToString().substr(0,64), n);
  }
  
  uint256 COutPoint::GetHash()
  {
      return Hash(BEGIN(hash), END(hash), BEGIN(n), END(n));
  }
  
  CTxIn::CTxIn(COutPoint prevoutIn, CScript scriptSigIn, uint32_t nSequenceIn)
  {
      prevout = prevoutIn;
      scriptSig = scriptSigIn;
      nSequence = nSequenceIn;
  }
  
  CTxIn::CTxIn(uint256 hashPrevTx, uint32_t nOut, CScript scriptSigIn, uint32_t nSequenceIn)
  {
      prevout = COutPoint(hashPrevTx, nOut);
      scriptSig = scriptSigIn;
      nSequence = nSequenceIn;
  }
  
  std::string CTxIn::ToString() const
  {
      std::string str;
      str += "CTxIn(";
      str += prevout.ToString();
      if (prevout.IsNull())
          str += strprintf(", coinbase %s", HexStr(scriptSig));
      else
          str += strprintf(", scriptSig=%s", scriptSig.ToString().substr(0,24));
      if (nSequence != std::numeric_limits<unsigned int>::max())
          str += strprintf(", nSequence=%u", nSequence);
      str += ")";
      return str;
  }
  
  CTxOut::CTxOut(const CAmount& nValueIn, CScript scriptPubKeyIn)
  {
      nValue = nValueIn;
      scriptPubKey = scriptPubKeyIn;
      nRounds = -10;
  }
  
  bool COutPoint::IsMasternodeReward(const CTransaction* tx) const
  {
      if(!tx->IsCoinStake())
          return false;
  
      return (n == tx->vout.size() - 1) && (tx->vout[1].scriptPubKey != tx->vout[n].scriptPubKey);
  }
  
  uint256 CTxOut::GetHash() const
  {
      return SerializeHash(*this);
  }
  
  std::string CTxOut::ToString() const
  {
      return strprintf("CTxOut(nValue=%d.%08d, scriptPubKey=%s)", nValue / COIN, nValue % COIN, scriptPubKey.ToString().substr(0,30));
  }
  
  CMutableTransaction::CMutableTransaction() : nVersion(CTransaction::CURRENT_VERSION), nLockTime(0) {}
  CMutableTransaction::CMutableTransaction(const CTransaction& tx) : nVersion(tx.nVersion), vin(tx.vin), vout(tx.vout), nLockTime(tx.nLockTime) {}
  
  uint256 CMutableTransaction::GetHash() const
  {
      return SerializeHash(*this);
  }
  
  std::string CMutableTransaction::ToString() const
  {
      std::string str;
      str += strprintf("CMutableTransaction(ver=%d, vin.size=%u, vout.size=%u, nLockTime=%u)\n",
          nVersion,
          vin.size(),
          vout.size(),
          nLockTime);
      for (unsigned int i = 0; i < vin.size(); i++)
          str += "    " + vin[i].ToString() + "\n";
      for (unsigned int i = 0; i < vout.size(); i++)
          str += "    " + vout[i].ToString() + "\n";
      return str;
  }
  
  void CTransaction::UpdateHash() const
  {
      *const_cast<uint256*>(&hash) = SerializeHash(*this);
  }
  
  CTransaction::CTransaction() : hash(), nVersion(CTransaction::CURRENT_VERSION), vin(), vout(), nLockTime(0) { }
  
  CTransaction::CTransaction(const CMutableTransaction &tx) : nVersion(tx.nVersion), vin(tx.vin), vout(tx.vout), nLockTime(tx.nLockTime) {
      UpdateHash();
  }
  
  CTransaction& CTransaction::operator=(const CTransaction &tx) {
      *const_cast<int*>(&nVersion) = tx.nVersion;
      *const_cast<std::vector<CTxIn>*>(&vin) = tx.vin;
      *const_cast<std::vector<CTxOut>*>(&vout) = tx.vout;
      *const_cast<unsigned int*>(&nLockTime) = tx.nLockTime;
      *const_cast<uint256*>(&hash) = tx.hash;
      return *this;
  }
  
  CAmount CTransaction::GetValueOut() const
  {
      CAmount nValueOut = 0;
      for (std::vector<CTxOut>::const_iterator it(vout.begin()); it != vout.end(); ++it)
      {
          // Solar: previously MoneyRange() was called here. This has been replaced with negative check and boundary wrap check.
          if (it->nValue < 0)
              throw std::runtime_error("CTransaction::GetValueOut() : value out of range : less than 0");
  
          if ((nValueOut + it->nValue) < nValueOut)
              throw std::runtime_error("CTransaction::GetValueOut() : value out of range : wraps the int64_t boundary");
  
          nValueOut += it->nValue;
      }
      return nValueOut;
  }
  
  double CTransaction::ComputePriority(double dPriorityInputs, unsigned int nTxSize) const
  {
      nTxSize = CalculateModifiedSize(nTxSize);
      if (nTxSize == 0) return 0.0;
  
      return dPriorityInputs / nTxSize;
  }
  
  unsigned int CTransaction::CalculateModifiedSize(unsigned int nTxSize) const
  {
      // In order to avoid disincentivizing cleaning up the UTXO set we don't count
      // the constant overhead for each txin and up to 110 bytes of scriptSig (which
      // is enough to cover a compressed pubkey p2sh redemption) for priority.
      // Providing any more cleanup incentive than making additional inputs free would
      // risk encouraging people to create junk outputs to redeem later.
      if (nTxSize == 0)
          nTxSize = ::GetSerializeSize(*this, SER_NETWORK, PROTOCOL_VERSION);
      for (std::vector<CTxIn>::const_iterator it(vin.begin()); it != vin.end(); ++it)
      {
          unsigned int offset = 41U + std::min(110U, (unsigned int)it->scriptSig.size());
          if (nTxSize > offset)
              nTxSize -= offset;
      }
      return nTxSize;
  }
  
  std::string CTransaction::ToString() const
  {
      std::string str;
      str += strprintf("CTransaction(hash=%s, ver=%d, vin.size=%u, vout.size=%u, nLockTime=%u)\n",
          GetHash().ToString().substr(0,10),
          nVersion,
          vin.size(),
          vout.size(),
          nLockTime);
      for (unsigned int i = 0; i < vin.size(); i++)
          str += "    " + vin[i].ToString() + "\n";
      for (unsigned int i = 0; i < vout.size(); i++)
          str += "    " + vout[i].ToString() + "\n";
      return str;
  }
  