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wallet.cpp
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wallet.cpp
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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "wallet.h"
#include "base58.h"
#include "coincontrol.h"
#include "kernel.h"
#include "net.h"
#include "timedata.h"
#include "txdb.h"
#include "ui_interface.h"
#include "walletdb.h"
#include "crypter.h"
#include "key.h"
#include "spork.h"
#include "darksend.h"
#include "instantx.h"
#include "masternode.h"
#include "chainparams.h"
#include "smessage.h"
#include <boost/algorithm/string/replace.hpp>
#include <boost/range/algorithm.hpp>
#include <boost/numeric/ublas/matrix.hpp>
using namespace std;
// Settings
int64_t nTransactionFee = MIN_TX_FEE;
int64_t nReserveBalance = 0;
int64_t nMinimumInputValue = 0;
static int64_t GetStakeCombineThreshold() { return 500000 * COIN; }
static int64_t GetStakeSplitThreshold() { return 2 * GetStakeCombineThreshold(); }
int64_t gcd(int64_t n,int64_t m) { return m == 0 ? n : gcd(m, n % m); }
static uint64_t CoinWeightCost(const COutput &out)
{
int64_t nTimeWeight = (int64_t)GetTime() - (int64_t)out.tx->nTime;
CBigNum bnCoinDayWeight = CBigNum(out.tx->vout[out.i].nValue) * nTimeWeight / (24 * 60 * 60);
return bnCoinDayWeight.getuint64();
}
//////////////////////////////////////////////////////////////////////////////
//
// mapWallet
//
struct CompareValueOnly
{
bool operator()(const pair<int64_t, pair<const CWalletTx*, unsigned int> >& t1,
const pair<int64_t, pair<const CWalletTx*, unsigned int> >& t2) const
{
return t1.first < t2.first;
}
};
CPubKey CWallet::GenerateNewKey()
{
AssertLockHeld(cs_wallet); // mapKeyMetadata
bool fCompressed = CanSupportFeature(FEATURE_COMPRPUBKEY); // default to compressed public keys if we want 0.6.0 wallets
RandAddSeedPerfmon();
CKey secret;
secret.MakeNewKey(fCompressed);
// Compressed public keys were introduced in version 0.6.0
if (fCompressed)
SetMinVersion(FEATURE_COMPRPUBKEY);
CPubKey pubkey = secret.GetPubKey();
// Create new metadata
int64_t nCreationTime = GetTime();
mapKeyMetadata[pubkey.GetID()] = CKeyMetadata(nCreationTime);
if (!nTimeFirstKey || nCreationTime < nTimeFirstKey)
nTimeFirstKey = nCreationTime;
if (!AddKeyPubKey(secret, pubkey))
throw std::runtime_error("CWallet::GenerateNewKey() : AddKey failed");
return pubkey;
}
bool CWallet::AddKeyPubKey(const CKey& secret, const CPubKey &pubkey)
{
AssertLockHeld(cs_wallet); // mapKeyMetadata
if (!CCryptoKeyStore::AddKeyPubKey(secret, pubkey))
return false;
if (!fFileBacked)
return true;
if (!IsCrypted()) {
return CWalletDB(strWalletFile).WriteKey(pubkey, secret.GetPrivKey(), mapKeyMetadata[pubkey.GetID()]);
}
return true;
}
bool CWallet::AddCryptedKey(const CPubKey &vchPubKey, const vector<unsigned char> &vchCryptedSecret)
{
if (!CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret))
return false;
if (!fFileBacked)
return true;
{
LOCK(cs_wallet);
if (pwalletdbEncryption)
return pwalletdbEncryption->WriteCryptedKey(vchPubKey, vchCryptedSecret, mapKeyMetadata[vchPubKey.GetID()]);
else
return CWalletDB(strWalletFile).WriteCryptedKey(vchPubKey, vchCryptedSecret, mapKeyMetadata[vchPubKey.GetID()]);
}
return false;
}
bool CWallet::LoadKeyMetadata(const CPubKey &pubkey, const CKeyMetadata &meta)
{
AssertLockHeld(cs_wallet); // mapKeyMetadata
if (meta.nCreateTime && (!nTimeFirstKey || meta.nCreateTime < nTimeFirstKey))
nTimeFirstKey = meta.nCreateTime;
mapKeyMetadata[pubkey.GetID()] = meta;
return true;
}
bool CWallet::LoadCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
{
return CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret);
}
bool CWallet::AddCScript(const CScript& redeemScript)
{
if (!CCryptoKeyStore::AddCScript(redeemScript))
return false;
if (!fFileBacked)
return true;
return CWalletDB(strWalletFile).WriteCScript(Hash160(redeemScript), redeemScript);
}
// optional setting to unlock wallet for staking only
// serves to disable the trivial sendmoney when OS account compromised
// provides no real security
bool fWalletUnlockStakingOnly = false;
bool CWallet::LoadCScript(const CScript& redeemScript)
{
/* A sanity check was added in pull #3843 to avoid adding redeemScripts
* that never can be redeemed. However, old wallets may still contain
* these. Do not add them to the wallet and warn. */
if (redeemScript.size() > MAX_SCRIPT_ELEMENT_SIZE)
{
std::string strAddr = CBitcoinAddress(redeemScript.GetID()).ToString();
LogPrintf("%s: Warning: This wallet contains a redeemScript of size %u which exceeds maximum size %i thus can never be redeemed. Do not use address %s.\n",
__func__, redeemScript.size(), MAX_SCRIPT_ELEMENT_SIZE, strAddr);
return true;
}
return CCryptoKeyStore::AddCScript(redeemScript);
}
bool CWallet::Lock()
{
if (IsLocked())
return true;
if (fDebug)
printf("Locking wallet.\n");
{
LOCK(cs_wallet);
CWalletDB wdb(strWalletFile);
// -- load encrypted spend_secret of stealth addresses
CStealthAddress sxAddrTemp;
std::set<CStealthAddress>::iterator it;
for (it = stealthAddresses.begin(); it != stealthAddresses.end(); ++it)
{
if (it->scan_secret.size() < 32)
continue; // stealth address is not owned
// -- CStealthAddress are only sorted on spend_pubkey
CStealthAddress &sxAddr = const_cast<CStealthAddress&>(*it);
if (fDebug)
printf("Recrypting stealth key %s\n", sxAddr.Encoded().c_str());
sxAddrTemp.scan_pubkey = sxAddr.scan_pubkey;
if (!wdb.ReadStealthAddress(sxAddrTemp))
{
printf("Error: Failed to read stealth key from db %s\n", sxAddr.Encoded().c_str());
continue;
}
sxAddr.spend_secret = sxAddrTemp.spend_secret;
};
}
return LockKeyStore();
};
bool CWallet::Unlock(const SecureString& strWalletPassphrase, bool anonymizeOnly)
{
SecureString strWalletPassphraseFinal;
if(!IsLocked())
{
fWalletUnlockAnonymizeOnly = anonymizeOnly;
return true;
}
strWalletPassphraseFinal = strWalletPassphrase;
CCrypter crypter;
CKeyingMaterial vMasterKey;
{
LOCK(cs_wallet);
BOOST_FOREACH(const MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
{
if(!crypter.SetKeyFromPassphrase(strWalletPassphraseFinal, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
return false;
if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
return false;
if (!CCryptoKeyStore::Unlock(vMasterKey))
return false;
break;
}
fWalletUnlockAnonymizeOnly = anonymizeOnly;
UnlockStealthAddresses(vMasterKey);
return true;
}
return false;
}
bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase)
{
bool fWasLocked = IsLocked();
SecureString strOldWalletPassphraseFinal;
strOldWalletPassphraseFinal = strOldWalletPassphrase;
{
LOCK(cs_wallet);
Lock();
CCrypter crypter;
CKeyingMaterial vMasterKey;
BOOST_FOREACH(MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
{
if(!crypter.SetKeyFromPassphrase(strOldWalletPassphraseFinal, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
return false;
if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
return false;
if (CCryptoKeyStore::Unlock(vMasterKey)
&& UnlockStealthAddresses(vMasterKey))
{
int64_t nStartTime = GetTimeMillis();
crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
pMasterKey.second.nDeriveIterations = pMasterKey.second.nDeriveIterations * (100 / ((double)(GetTimeMillis() - nStartTime)));
nStartTime = GetTimeMillis();
crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
pMasterKey.second.nDeriveIterations = (pMasterKey.second.nDeriveIterations + pMasterKey.second.nDeriveIterations * 100 / ((double)(GetTimeMillis() - nStartTime))) / 2;
if (pMasterKey.second.nDeriveIterations < 25000)
pMasterKey.second.nDeriveIterations = 25000;
LogPrintf("Wallet passphrase changed to an nDeriveIterations of %i\n", pMasterKey.second.nDeriveIterations);
if (!crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
return false;
if (!crypter.Encrypt(vMasterKey, pMasterKey.second.vchCryptedKey))
return false;
CWalletDB(strWalletFile).WriteMasterKey(pMasterKey.first, pMasterKey.second);
if (fWasLocked)
Lock();
return true;
}
}
}
return false;
}
void CWallet::SetBestChain(const CBlockLocator& loc)
{
CWalletDB walletdb(strWalletFile);
walletdb.WriteBestBlock(loc);
}
bool CWallet::SetMinVersion(enum WalletFeature nVersion, CWalletDB* pwalletdbIn, bool fExplicit)
{
LOCK(cs_wallet); // nWalletVersion
if (nWalletVersion >= nVersion)
return true;
// when doing an explicit upgrade, if we pass the max version permitted, upgrade all the way
if (fExplicit && nVersion > nWalletMaxVersion)
nVersion = FEATURE_LATEST;
nWalletVersion = nVersion;
if (nVersion > nWalletMaxVersion)
nWalletMaxVersion = nVersion;
if (fFileBacked)
{
CWalletDB* pwalletdb = pwalletdbIn ? pwalletdbIn : new CWalletDB(strWalletFile);
if (nWalletVersion > 40000)
pwalletdb->WriteMinVersion(nWalletVersion);
if (!pwalletdbIn)
delete pwalletdb;
}
return true;
}
bool CWallet::SetMaxVersion(int nVersion)
{
LOCK(cs_wallet); // nWalletVersion, nWalletMaxVersion
// cannot downgrade below current version
if (nWalletVersion > nVersion)
return false;
nWalletMaxVersion = nVersion;
return true;
}
bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
{
if (IsCrypted())
return false;
CKeyingMaterial vMasterKey;
RandAddSeedPerfmon();
vMasterKey.resize(WALLET_CRYPTO_KEY_SIZE);
RAND_bytes(&vMasterKey[0], WALLET_CRYPTO_KEY_SIZE);
CMasterKey kMasterKey(nDerivationMethodIndex);
RandAddSeedPerfmon();
kMasterKey.vchSalt.resize(WALLET_CRYPTO_SALT_SIZE);
RAND_bytes(&kMasterKey.vchSalt[0], WALLET_CRYPTO_SALT_SIZE);
CCrypter crypter;
int64_t nStartTime = GetTimeMillis();
crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, 25000, kMasterKey.nDerivationMethod);
kMasterKey.nDeriveIterations = 2500000 / ((double)(GetTimeMillis() - nStartTime));
nStartTime = GetTimeMillis();
crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod);
kMasterKey.nDeriveIterations = (kMasterKey.nDeriveIterations + kMasterKey.nDeriveIterations * 100 / ((double)(GetTimeMillis() - nStartTime))) / 2;
if (kMasterKey.nDeriveIterations < 25000)
kMasterKey.nDeriveIterations = 25000;
LogPrintf("Encrypting Wallet with an nDeriveIterations of %i\n", kMasterKey.nDeriveIterations);
if (!crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod))
return false;
if (!crypter.Encrypt(vMasterKey, kMasterKey.vchCryptedKey))
return false;
{
LOCK(cs_wallet);
mapMasterKeys[++nMasterKeyMaxID] = kMasterKey;
if (fFileBacked)
{
pwalletdbEncryption = new CWalletDB(strWalletFile);
if (!pwalletdbEncryption->TxnBegin())
return false;
pwalletdbEncryption->WriteMasterKey(nMasterKeyMaxID, kMasterKey);
}
if (!EncryptKeys(vMasterKey))
{
if (fFileBacked)
pwalletdbEncryption->TxnAbort();
exit(1); //We now probably have half of our keys encrypted in memory, and half not...die and let the user reload their unencrypted wallet.
}
std::set<CStealthAddress>::iterator it;
for (it = stealthAddresses.begin(); it != stealthAddresses.end(); ++it)
{
if (it->scan_secret.size() < 32)
continue; // stealth address is not owned
// -- CStealthAddress is only sorted on spend_pubkey
CStealthAddress &sxAddr = const_cast<CStealthAddress&>(*it);
if (fDebug)
printf("Encrypting stealth key %s\n", sxAddr.Encoded().c_str());
std::vector<unsigned char> vchCryptedSecret;
CSecret vchSecret;
vchSecret.resize(32);
memcpy(&vchSecret[0], &sxAddr.spend_secret[0], 32);
uint256 iv = Hash(sxAddr.spend_pubkey.begin(), sxAddr.spend_pubkey.end());
if (!EncryptSecret(vMasterKey, vchSecret, iv, vchCryptedSecret))
{
printf("Error: Failed encrypting stealth key %s\n", sxAddr.Encoded().c_str());
continue;
};
sxAddr.spend_secret = vchCryptedSecret;
pwalletdbEncryption->WriteStealthAddress(sxAddr);
};
// Encryption was introduced in version 0.4.0
SetMinVersion(FEATURE_WALLETCRYPT, pwalletdbEncryption, true);
if (fFileBacked)
{
if (!pwalletdbEncryption->TxnCommit())
exit(1); //We now have keys encrypted in memory, but no on disk...die to avoid confusion and let the user reload their unencrypted wallet.
delete pwalletdbEncryption;
pwalletdbEncryption = NULL;
}
Lock();
Unlock(strWalletPassphrase);
NewKeyPool();
Lock();
// Need to completely rewrite the wallet file; if we don't, bdb might keep
// bits of the unencrypted private key in slack space in the database file.
CDB::Rewrite(strWalletFile);
}
NotifyStatusChanged(this);
return true;
}
int64_t CWallet::IncOrderPosNext(CWalletDB *pwalletdb)
{
AssertLockHeld(cs_wallet); // nOrderPosNext
int64_t nRet = nOrderPosNext++;
if (pwalletdb) {
pwalletdb->WriteOrderPosNext(nOrderPosNext);
} else {
CWalletDB(strWalletFile).WriteOrderPosNext(nOrderPosNext);
}
return nRet;
}
CWallet::TxItems CWallet::OrderedTxItems(std::list<CAccountingEntry>& acentries, std::string strAccount)
{
AssertLockHeld(cs_wallet); // mapWallet
CWalletDB walletdb(strWalletFile);
// First: get all CWalletTx and CAccountingEntry into a sorted-by-order multimap.
TxItems txOrdered;
// Note: maintaining indices in the database of (account,time) --> txid and (account, time) --> acentry
// would make this much faster for applications that do this a lot.
for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
{
CWalletTx* wtx = &((*it).second);
txOrdered.insert(make_pair(wtx->nOrderPos, TxPair(wtx, (CAccountingEntry*)0)));
}
acentries.clear();
walletdb.ListAccountCreditDebit(strAccount, acentries);
BOOST_FOREACH(CAccountingEntry& entry, acentries)
{
txOrdered.insert(make_pair(entry.nOrderPos, TxPair((CWalletTx*)0, &entry)));
}
return txOrdered;
}
void CWallet::WalletUpdateSpent(const CTransaction &tx, bool fBlock)
{
// Anytime a signature is successfully verified, it's proof the outpoint is spent.
// Update the wallet spent flag if it doesn't know due to wallet.dat being
// restored from backup or the user making copies of wallet.dat.
{
LOCK(cs_wallet);
BOOST_FOREACH(const CTxIn& txin, tx.vin)
{
map<uint256, CWalletTx>::iterator mi = mapWallet.find(txin.prevout.hash);
if (mi != mapWallet.end())
{
CWalletTx& wtx = (*mi).second;
if (txin.prevout.n >= wtx.vout.size())
LogPrintf("WalletUpdateSpent: bad wtx %s\n", wtx.GetHash().ToString());
else if (!wtx.IsSpent(txin.prevout.n) && IsMine(wtx.vout[txin.prevout.n]))
{
LogPrintf("WalletUpdateSpent found spent coin %s LOC2 %s\n", FormatMoney(wtx.GetCredit()), wtx.GetHash().ToString());
wtx.MarkSpent(txin.prevout.n);
wtx.WriteToDisk();
NotifyTransactionChanged(this, txin.prevout.hash, CT_UPDATED);
}
}
}
if (fBlock)
{
uint256 hash = tx.GetHash();
map<uint256, CWalletTx>::iterator mi = mapWallet.find(hash);
CWalletTx& wtx = (*mi).second;
BOOST_FOREACH(const CTxOut& txout, tx.vout)
{
if (IsMine(txout))
{
wtx.MarkUnspent(&txout - &tx.vout[0]);
wtx.WriteToDisk();
NotifyTransactionChanged(this, hash, CT_UPDATED);
}
}
}
}
}
void CWallet::MarkDirty()
{
{
LOCK(cs_wallet);
BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
item.second.MarkDirty();
}
}
bool CWallet::AddToWallet(const CWalletTx& wtxIn)
{
uint256 hash = wtxIn.GetHash();
{
LOCK(cs_wallet);
// Inserts only if not already there, returns tx inserted or tx found
pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
CWalletTx& wtx = (*ret.first).second;
wtx.BindWallet(this);
bool fInsertedNew = ret.second;
if (fInsertedNew)
{
wtx.nTimeReceived = GetAdjustedTime();
wtx.nOrderPos = IncOrderPosNext();
wtx.nTimeSmart = wtx.nTimeReceived;
if (wtxIn.hashBlock != 0)
{
if (mapBlockIndex.count(wtxIn.hashBlock))
{
unsigned int latestNow = wtx.nTimeReceived;
unsigned int latestEntry = 0;
{
// Tolerate times up to the last timestamp in the wallet not more than 5 minutes into the future
int64_t latestTolerated = latestNow + 300;
std::list<CAccountingEntry> acentries;
TxItems txOrdered = OrderedTxItems(acentries);
for (TxItems::reverse_iterator it = txOrdered.rbegin(); it != txOrdered.rend(); ++it)
{
CWalletTx *const pwtx = (*it).second.first;
if (pwtx == &wtx)
continue;
CAccountingEntry *const pacentry = (*it).second.second;
int64_t nSmartTime;
if (pwtx)
{
nSmartTime = pwtx->nTimeSmart;
if (!nSmartTime)
nSmartTime = pwtx->nTimeReceived;
}
else
nSmartTime = pacentry->nTime;
if (nSmartTime <= latestTolerated)
{
latestEntry = nSmartTime;
if (nSmartTime > latestNow)
latestNow = nSmartTime;
break;
}
}
}
unsigned int& blocktime = mapBlockIndex[wtxIn.hashBlock]->nTime;
wtx.nTimeSmart = std::max(latestEntry, std::min(blocktime, latestNow));
}
else
LogPrintf("AddToWallet() : found %s in block %s not in index\n",
wtxIn.GetHash().ToString(),
wtxIn.hashBlock.ToString());
}
}
bool fUpdated = false;
if (!fInsertedNew)
{
// Merge
if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
{
wtx.hashBlock = wtxIn.hashBlock;
fUpdated = true;
}
if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
{
wtx.vMerkleBranch = wtxIn.vMerkleBranch;
wtx.nIndex = wtxIn.nIndex;
fUpdated = true;
}
if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
{
wtx.fFromMe = wtxIn.fFromMe;
fUpdated = true;
}
fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
}
//// debug print
LogPrintf("AddToWallet %s %s%s\n", wtxIn.GetHash().ToString(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
// Write to disk
if (fInsertedNew || fUpdated)
if (!wtx.WriteToDisk())
return false;
if (!fHaveGUI) {
// If default receiving address gets used, replace it with a new one
if (vchDefaultKey.IsValid()) {
CScript scriptDefaultKey;
scriptDefaultKey.SetDestination(vchDefaultKey.GetID());
BOOST_FOREACH(const CTxOut& txout, wtx.vout)
{
if (txout.scriptPubKey == scriptDefaultKey)
{
CPubKey newDefaultKey;
if (GetKeyFromPool(newDefaultKey))
{
SetDefaultKey(newDefaultKey);
SetAddressBookName(vchDefaultKey.GetID(), "");
}
}
}
}
}
// since AddToWallet is called directly for self-originating transactions, check for consumption of own coins
WalletUpdateSpent(wtx, (wtxIn.hashBlock != 0));
// Notify UI of new or updated transaction
NotifyTransactionChanged(this, hash, fInsertedNew ? CT_NEW : CT_UPDATED);
// notify an external script when a wallet transaction comes in or is updated
std::string strCmd = GetArg("-walletnotify", "");
if ( !strCmd.empty())
{
boost::replace_all(strCmd, "%s", wtxIn.GetHash().GetHex());
boost::thread t(runCommand, strCmd); // thread runs free
}
}
return true;
}
// Add a transaction to the wallet, or update it.
// pblock is optional, but should be provided if the transaction is known to be in a block.
// If fUpdate is true, existing transactions will be updated.
bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
{
uint256 hash = tx.GetHash();
{
LOCK(cs_wallet);
bool fExisted = mapWallet.count(hash);
if (fExisted && !fUpdate) return false;
mapValue_t mapNarr;
FindStealthTransactions(tx, mapNarr);
if (fExisted || IsMine(tx) || IsFromMe(tx))
{
CWalletTx wtx(this,tx);
if (!mapNarr.empty())
wtx.mapValue.insert(mapNarr.begin(), mapNarr.end());
// Get merkle branch if transaction was found in a block
if (pblock)
wtx.SetMerkleBranch(pblock);
return AddToWallet(wtx);
}
else
WalletUpdateSpent(tx);
}
return false;
}
void CWallet::SyncTransaction(const CTransaction& tx, const CBlock* pblock, bool fConnect) {
if (!fConnect)
{
// wallets need to refund inputs when disconnecting coinstake
if (tx.IsCoinStake())
{
if (IsFromMe(tx))
DisableTransaction(tx);
}
return;
}
AddToWalletIfInvolvingMe(tx, pblock, true);
}
void CWallet::EraseFromWallet(const uint256 &hash)
{
if (!fFileBacked)
return;
{
LOCK(cs_wallet);
if (mapWallet.erase(hash))
CWalletDB(strWalletFile).EraseTx(hash);
}
return;
}
bool CWallet::IsMine(const CTxIn &txin) const
{
{
LOCK(cs_wallet);
map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
if (mi != mapWallet.end())
{
const CWalletTx& prev = (*mi).second;
if (txin.prevout.n < prev.vout.size())
if (IsMine(prev.vout[txin.prevout.n]))
return true;
}
}
return false;
}
int64_t CWallet::GetDebit(const CTxIn &txin) const
{
{
LOCK(cs_wallet);
map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
if (mi != mapWallet.end())
{
const CWalletTx& prev = (*mi).second;
if (txin.prevout.n < prev.vout.size())
if (IsMine(prev.vout[txin.prevout.n]))
return prev.vout[txin.prevout.n].nValue;
}
}
return 0;
}
bool CWallet::IsDenominated(const CTxIn &txin) const
{
{
LOCK(cs_wallet);
map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
if (mi != mapWallet.end())
{
const CWalletTx& prev = (*mi).second;
if (txin.prevout.n < prev.vout.size()) return IsDenominatedAmount(prev.vout[txin.prevout.n].nValue);
}
}
return false;
}
bool CWallet::IsDenominatedAmount(int64_t nInputAmount) const
{
BOOST_FOREACH(int64_t d, darkSendDenominations)
if(nInputAmount == d)
return true;
return false;
}
bool CWallet::IsChange(const CTxOut& txout) const
{
CTxDestination address;
// TODO: fix handling of 'change' outputs. The assumption is that any
// payment to a TX_PUBKEYHASH that is mine but isn't in the address book
// is change. That assumption is likely to break when we implement multisignature
// wallets that return change back into a multi-signature-protected address;
// a better way of identifying which outputs are 'the send' and which are
// 'the change' will need to be implemented (maybe extend CWalletTx to remember
// which output, if any, was change).
if (ExtractDestination(txout.scriptPubKey, address) && ::IsMine(*this, address))
{
LOCK(cs_wallet);
if (!mapAddressBook.count(address))
return true;
}
return false;
}
int64_t CWalletTx::GetTxTime() const
{
int64_t n = nTimeSmart;
return n ? n : nTimeReceived;
}
int CWalletTx::GetRequestCount() const
{
// Returns -1 if it wasn't being tracked
int nRequests = -1;
{
LOCK(pwallet->cs_wallet);
if (IsCoinBase() || IsCoinStake())
{
// Generated block
if (hashBlock != 0)
{
map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
if (mi != pwallet->mapRequestCount.end())
nRequests = (*mi).second;
}
}
else
{
// Did anyone request this transaction?
map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(GetHash());
if (mi != pwallet->mapRequestCount.end())
{
nRequests = (*mi).second;
// How about the block it's in?
if (nRequests == 0 && hashBlock != 0)
{
map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
if (mi != pwallet->mapRequestCount.end())
nRequests = (*mi).second;
else
nRequests = 1; // If it's in someone else's block it must have got out
}
}
}
}
return nRequests;
}
void CWalletTx::GetAmounts(list<pair<CTxDestination, int64_t> >& listReceived,
list<pair<CTxDestination, int64_t> >& listSent, int64_t& nFee, string& strSentAccount) const
{
LOCK(pwallet->cs_wallet);
nFee = 0;
listReceived.clear();
listSent.clear();
strSentAccount = strFromAccount;
// Compute fee:
int64_t nDebit = GetDebit();
if (nDebit > 0) // debit>0 means we signed/sent this transaction
{
int64_t nValueOut = GetValueOut();
nFee = nDebit - nValueOut;
}
// Sent/received.
BOOST_FOREACH(const CTxOut& txout, vout)
{
// Skip special stake out
if (txout.scriptPubKey.empty())
continue;
bool fIsMine;
// Only need to handle txouts if AT LEAST one of these is true:
// 1) they debit from us (sent)
// 2) the output is to us (received)
if (nDebit > 0)
{
// Don't report 'change' txouts
// LOCNOTE: CoinControl possible fix related... with HD wallet we need to report change?
//if (pwallet->IsChange(txout))
// continue;
fIsMine = pwallet->IsMine(txout);
}
else if (!(fIsMine = pwallet->IsMine(txout)))
continue;
// In either case, we need to get the destination address
CTxDestination address;
if (!ExtractDestination(txout.scriptPubKey, address))
{
LogPrintf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
this->GetHash().ToString());
address = CNoDestination();
}
// If we are debited by the transaction, add the output as a "sent" entry
if (nDebit > 0)
listSent.push_back(make_pair(address, txout.nValue));
// If we are receiving the output, add it as a "received" entry
if (fIsMine)
listReceived.push_back(make_pair(address, txout.nValue));
}
}
void CWalletTx::GetAccountAmounts(const string& strAccount, int64_t& nReceived,
int64_t& nSent, int64_t& nFee) const
{
LOCK(pwallet->cs_wallet);
nReceived = nSent = nFee = 0;
int64_t allFee;
string strSentAccount;
list<pair<CTxDestination, int64_t> > listReceived;
list<pair<CTxDestination, int64_t> > listSent;
GetAmounts(listReceived, listSent, allFee, strSentAccount);
if (strAccount == strSentAccount)
{
BOOST_FOREACH(const PAIRTYPE(CTxDestination,int64_t)& s, listSent)
nSent += s.second;
nFee = allFee;
}
{
BOOST_FOREACH(const PAIRTYPE(CTxDestination,int64_t)& r, listReceived)
{
if (pwallet->mapAddressBook.count(r.first))
{
map<CTxDestination, string>::const_iterator mi = pwallet->mapAddressBook.find(r.first);
if (mi != pwallet->mapAddressBook.end() && (*mi).second == strAccount)
nReceived += r.second;
}
else if (strAccount.empty())
{
nReceived += r.second;
}
}
}
}
void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
{
vtxPrev.clear();
const int COPY_DEPTH = 3;
if (SetMerkleBranch() < COPY_DEPTH)
{
vector<uint256> vWorkQueue;
BOOST_FOREACH(const CTxIn& txin, vin)
vWorkQueue.push_back(txin.prevout.hash);
// This critsect is OK because txdb is already open
{
LOCK(pwallet->cs_wallet);
map<uint256, const CMerkleTx*> mapWalletPrev;
set<uint256> setAlreadyDone;
for (unsigned int i = 0; i < vWorkQueue.size(); i++)
{
uint256 hash = vWorkQueue[i];
if (setAlreadyDone.count(hash))
continue;
setAlreadyDone.insert(hash);
CMerkleTx tx;
map<uint256, CWalletTx>::const_iterator mi = pwallet->mapWallet.find(hash);
if (mi != pwallet->mapWallet.end())
{
tx = (*mi).second;
BOOST_FOREACH(const CMerkleTx& txWalletPrev, (*mi).second.vtxPrev)
mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
}
else if (mapWalletPrev.count(hash))
{
tx = *mapWalletPrev[hash];
}
else if (txdb.ReadDiskTx(hash, tx))
{
;
}
else
{
LogPrintf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
continue;
}
int nDepth = tx.SetMerkleBranch();
vtxPrev.push_back(tx);
if (nDepth < COPY_DEPTH)
{
BOOST_FOREACH(const CTxIn& txin, tx.vin)
vWorkQueue.push_back(txin.prevout.hash);
}
}
}
}
reverse(vtxPrev.begin(), vtxPrev.end());
}
bool CWalletTx::WriteToDisk()