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wallet.cpp
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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2017 The Bitcoin Core developers
// Copyright (c) 2017-2017 The Bitcore Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "wallet/wallet.h"
#include "base58.h"
#include "checkpoints.h"
#include "chain.h"
#include "wallet/coincontrol.h"
#include "consensus/consensus.h"
#include "consensus/validation.h"
#include "key.h"
#include "keystore.h"
#include "validation.h"
#include "net.h"
#include "policy/policy.h"
#include "primitives/block.h"
#include "primitives/transaction.h"
#include "script/script.h"
#include "script/sign.h"
#include "timedata.h"
#include "txmempool.h"
#include "util.h"
#include "ui_interface.h"
#include "utilmoneystr.h"
#include <assert.h>
#include <boost/algorithm/string/replace.hpp>
#include <boost/filesystem.hpp>
#include <boost/thread.hpp>
using namespace std;
CWallet* pwalletMain = NULL;
/** Transaction fee set by the user */
CFeeRate payTxFee(DEFAULT_TRANSACTION_FEE);
unsigned int nTxConfirmTarget = DEFAULT_TX_CONFIRM_TARGET;
bool bSpendZeroConfChange = DEFAULT_SPEND_ZEROCONF_CHANGE;
bool fSendFreeTransactions = DEFAULT_SEND_FREE_TRANSACTIONS;
bool fWalletRbf = DEFAULT_WALLET_RBF;
const char * DEFAULT_WALLET_DAT = "wallet.dat";
const uint32_t BIP32_HARDENED_KEY_LIMIT = 0x80000000;
/**
* Fees smaller than this (in satoshi) are considered zero fee (for transaction creation)
* Override with -mintxfee
*/
CFeeRate CWallet::minTxFee = CFeeRate(DEFAULT_TRANSACTION_MINFEE);
/**
* If fee estimation does not have enough data to provide estimates, use this fee instead.
* Has no effect if not using fee estimation
* Override with -fallbackfee
*/
CFeeRate CWallet::fallbackFee = CFeeRate(DEFAULT_FALLBACK_FEE);
const uint256 CMerkleTx::ABANDON_HASH(uint256S("0000000000000000000000000000000000000000000000000000000000000001"));
/** @defgroup mapWallet
*
* @{
*/
struct CompareValueOnly
{
bool operator()(const pair<CAmount, pair<const CWalletTx*, unsigned int> >& t1,
const pair<CAmount, pair<const CWalletTx*, unsigned int> >& t2) const
{
return t1.first < t2.first;
}
};
std::string COutput::ToString() const
{
return strprintf("COutput(%s, %d, %d) [%s]", tx->GetHash().ToString(), i, nDepth, FormatMoney(tx->tx->vout[i].nValue));
}
const CWalletTx* CWallet::GetWalletTx(const uint256& hash) const
{
LOCK(cs_wallet);
std::map<uint256, CWalletTx>::const_iterator it = mapWallet.find(hash);
if (it == mapWallet.end())
return NULL;
return &(it->second);
}
CPubKey CWallet::GenerateNewKey()
{
AssertLockHeld(cs_wallet); // mapKeyMetadata
bool fCompressed = CanSupportFeature(FEATURE_COMPRPUBKEY); // default to compressed public keys if we want 0.6.0 wallets
CKey secret;
// Create new metadata
int64_t nCreationTime = GetTime();
CKeyMetadata metadata(nCreationTime);
// use HD key derivation if HD was enabled during wallet creation
if (IsHDEnabled()) {
DeriveNewChildKey(metadata, secret);
} else {
secret.MakeNewKey(fCompressed);
}
// Compressed public keys were introduced in version 0.6.0
if (fCompressed)
SetMinVersion(FEATURE_COMPRPUBKEY);
CPubKey pubkey = secret.GetPubKey();
assert(secret.VerifyPubKey(pubkey));
mapKeyMetadata[pubkey.GetID()] = metadata;
UpdateTimeFirstKey(nCreationTime);
if (!AddKeyPubKey(secret, pubkey))
throw std::runtime_error(std::string(__func__) + ": AddKey failed");
return pubkey;
}
void CWallet::DeriveNewChildKey(CKeyMetadata& metadata, CKey& secret)
{
// for now we use a fixed keypath scheme of m/0'/0'/k
CKey key; //master key seed (256bit)
CExtKey masterKey; //hd master key
CExtKey accountKey; //key at m/0'
CExtKey externalChainChildKey; //key at m/0'/0'
CExtKey childKey; //key at m/0'/0'/<n>'
// try to get the master key
if (!GetKey(hdChain.masterKeyID, key))
throw std::runtime_error(std::string(__func__) + ": Master key not found");
masterKey.SetMaster(key.begin(), key.size());
// derive m/0'
// use hardened derivation (child keys >= 0x80000000 are hardened after bip32)
masterKey.Derive(accountKey, BIP32_HARDENED_KEY_LIMIT);
// derive m/0'/0'
accountKey.Derive(externalChainChildKey, BIP32_HARDENED_KEY_LIMIT);
// derive child key at next index, skip keys already known to the wallet
do {
// always derive hardened keys
// childIndex | BIP32_HARDENED_KEY_LIMIT = derive childIndex in hardened child-index-range
// example: 1 | BIP32_HARDENED_KEY_LIMIT == 0x80000001 == 2147483649
externalChainChildKey.Derive(childKey, hdChain.nExternalChainCounter | BIP32_HARDENED_KEY_LIMIT);
metadata.hdKeypath = "m/0'/0'/" + std::to_string(hdChain.nExternalChainCounter) + "'";
metadata.hdMasterKeyID = hdChain.masterKeyID;
// increment childkey index
hdChain.nExternalChainCounter++;
} while (HaveKey(childKey.key.GetPubKey().GetID()));
secret = childKey.key;
// update the chain model in the database
if (!CWalletDB(strWalletFile).WriteHDChain(hdChain))
throw std::runtime_error(std::string(__func__) + ": Writing HD chain model failed");
}
bool CWallet::AddKeyPubKey(const CKey& secret, const CPubKey &pubkey)
{
AssertLockHeld(cs_wallet); // mapKeyMetadata
if (!CCryptoKeyStore::AddKeyPubKey(secret, pubkey))
return false;
// check if we need to remove from watch-only
CScript script;
script = GetScriptForDestination(pubkey.GetID());
if (HaveWatchOnly(script))
RemoveWatchOnly(script);
script = GetScriptForRawPubKey(pubkey);
if (HaveWatchOnly(script))
RemoveWatchOnly(script);
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 CTxDestination& keyID, const CKeyMetadata &meta)
{
AssertLockHeld(cs_wallet); // mapKeyMetadata
UpdateTimeFirstKey(meta.nCreateTime);
mapKeyMetadata[keyID] = meta;
return true;
}
bool CWallet::LoadCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
{
return CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret);
}
void CWallet::UpdateTimeFirstKey(int64_t nCreateTime)
{
AssertLockHeld(cs_wallet);
if (nCreateTime <= 1) {
// Cannot determine birthday information, so set the wallet birthday to
// the beginning of time.
nTimeFirstKey = 1;
} else if (!nTimeFirstKey || nCreateTime < nTimeFirstKey) {
nTimeFirstKey = nCreateTime;
}
}
bool CWallet::AddCScript(const CScript& redeemScript)
{
if (!CCryptoKeyStore::AddCScript(redeemScript))
return false;
if (!fFileBacked)
return true;
return CWalletDB(strWalletFile).WriteCScript(Hash160(redeemScript), redeemScript);
}
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 = CBitCoreAddress(CScriptID(redeemScript)).ToString();
LogPrintf("%s: Warning: This wallet contains a redeemScript of size %i 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::AddWatchOnly(const CScript& dest)
{
if (!CCryptoKeyStore::AddWatchOnly(dest))
return false;
const CKeyMetadata& meta = mapKeyMetadata[CScriptID(dest)];
UpdateTimeFirstKey(meta.nCreateTime);
NotifyWatchonlyChanged(true);
if (!fFileBacked)
return true;
return CWalletDB(strWalletFile).WriteWatchOnly(dest, meta);
}
bool CWallet::AddWatchOnly(const CScript& dest, int64_t nCreateTime)
{
mapKeyMetadata[CScriptID(dest)].nCreateTime = nCreateTime;
return AddWatchOnly(dest);
}
bool CWallet::RemoveWatchOnly(const CScript &dest)
{
AssertLockHeld(cs_wallet);
if (!CCryptoKeyStore::RemoveWatchOnly(dest))
return false;
if (!HaveWatchOnly())
NotifyWatchonlyChanged(false);
if (fFileBacked)
if (!CWalletDB(strWalletFile).EraseWatchOnly(dest))
return false;
return true;
}
bool CWallet::LoadWatchOnly(const CScript &dest)
{
return CCryptoKeyStore::AddWatchOnly(dest);
}
bool CWallet::Unlock(const SecureString& strWalletPassphrase)
{
CCrypter crypter;
CKeyingMaterial vMasterKey;
{
LOCK(cs_wallet);
BOOST_FOREACH(const MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
{
if(!crypter.SetKeyFromPassphrase(strWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
return false;
if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
continue; // try another master key
if (CCryptoKeyStore::Unlock(vMasterKey))
return true;
}
}
return false;
}
bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase)
{
bool fWasLocked = IsLocked();
{
LOCK(cs_wallet);
Lock();
CCrypter crypter;
CKeyingMaterial vMasterKey;
BOOST_FOREACH(MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
{
if(!crypter.SetKeyFromPassphrase(strOldWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
return false;
if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
return false;
if (CCryptoKeyStore::Unlock(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;
}
set<uint256> CWallet::GetConflicts(const uint256& txid) const
{
set<uint256> result;
AssertLockHeld(cs_wallet);
std::map<uint256, CWalletTx>::const_iterator it = mapWallet.find(txid);
if (it == mapWallet.end())
return result;
const CWalletTx& wtx = it->second;
std::pair<TxSpends::const_iterator, TxSpends::const_iterator> range;
BOOST_FOREACH(const CTxIn& txin, wtx.tx->vin)
{
if (mapTxSpends.count(txin.prevout) <= 1)
continue; // No conflict if zero or one spends
range = mapTxSpends.equal_range(txin.prevout);
for (TxSpends::const_iterator _it = range.first; _it != range.second; ++_it)
result.insert(_it->second);
}
return result;
}
bool CWallet::HasWalletSpend(const uint256& txid) const
{
AssertLockHeld(cs_wallet);
auto iter = mapTxSpends.lower_bound(COutPoint(txid, 0));
return (iter != mapTxSpends.end() && iter->first.hash == txid);
}
void CWallet::Flush(bool shutdown)
{
bitdb.Flush(shutdown);
}
bool CWallet::Verify()
{
if (GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET))
return true;
LogPrintf("Using BerkeleyDB version %s\n", DbEnv::version(0, 0, 0));
std::string walletFile = GetArg("-wallet", DEFAULT_WALLET_DAT);
LogPrintf("Using wallet %s\n", walletFile);
uiInterface.InitMessage(_("Verifying wallet..."));
// Wallet file must be a plain filename without a directory
if (walletFile != boost::filesystem::basename(walletFile) + boost::filesystem::extension(walletFile))
return InitError(strprintf(_("Wallet %s resides outside data directory %s"), walletFile, GetDataDir().string()));
if (!bitdb.Open(GetDataDir()))
{
// try moving the database env out of the way
boost::filesystem::path pathDatabase = GetDataDir() / "database";
boost::filesystem::path pathDatabaseBak = GetDataDir() / strprintf("database.%d.bak", GetTime());
try {
boost::filesystem::rename(pathDatabase, pathDatabaseBak);
LogPrintf("Moved old %s to %s. Retrying.\n", pathDatabase.string(), pathDatabaseBak.string());
} catch (const boost::filesystem::filesystem_error&) {
// failure is ok (well, not really, but it's not worse than what we started with)
}
// try again
if (!bitdb.Open(GetDataDir())) {
// if it still fails, it probably means we can't even create the database env
return InitError(strprintf(_("Error initializing wallet database environment %s!"), GetDataDir()));
}
}
if (GetBoolArg("-salvagewallet", false))
{
// Recover readable keypairs:
if (!CWalletDB::Recover(bitdb, walletFile, true))
return false;
}
if (boost::filesystem::exists(GetDataDir() / walletFile))
{
CDBEnv::VerifyResult r = bitdb.Verify(walletFile, CWalletDB::Recover);
if (r == CDBEnv::RECOVER_OK)
{
InitWarning(strprintf(_("Warning: Wallet file corrupt, data salvaged!"
" Original %s saved as %s in %s; if"
" your balance or transactions are incorrect you should"
" restore from a backup."),
walletFile, "wallet.{timestamp}.bak", GetDataDir()));
}
if (r == CDBEnv::RECOVER_FAIL)
return InitError(strprintf(_("%s corrupt, salvage failed"), walletFile));
}
return true;
}
void CWallet::SyncMetaData(pair<TxSpends::iterator, TxSpends::iterator> range)
{
// We want all the wallet transactions in range to have the same metadata as
// the oldest (smallest nOrderPos).
// So: find smallest nOrderPos:
int nMinOrderPos = std::numeric_limits<int>::max();
const CWalletTx* copyFrom = NULL;
for (TxSpends::iterator it = range.first; it != range.second; ++it)
{
const uint256& hash = it->second;
int n = mapWallet[hash].nOrderPos;
if (n < nMinOrderPos)
{
nMinOrderPos = n;
copyFrom = &mapWallet[hash];
}
}
// Now copy data from copyFrom to rest:
for (TxSpends::iterator it = range.first; it != range.second; ++it)
{
const uint256& hash = it->second;
CWalletTx* copyTo = &mapWallet[hash];
if (copyFrom == copyTo) continue;
if (!copyFrom->IsEquivalentTo(*copyTo)) continue;
copyTo->mapValue = copyFrom->mapValue;
copyTo->vOrderForm = copyFrom->vOrderForm;
// fTimeReceivedIsTxTime not copied on purpose
// nTimeReceived not copied on purpose
copyTo->nTimeSmart = copyFrom->nTimeSmart;
copyTo->fFromMe = copyFrom->fFromMe;
copyTo->strFromAccount = copyFrom->strFromAccount;
// nOrderPos not copied on purpose
// cached members not copied on purpose
}
}
/**
* Outpoint is spent if any non-conflicted transaction
* spends it:
*/
bool CWallet::IsSpent(const uint256& hash, unsigned int n) const
{
const COutPoint outpoint(hash, n);
pair<TxSpends::const_iterator, TxSpends::const_iterator> range;
range = mapTxSpends.equal_range(outpoint);
for (TxSpends::const_iterator it = range.first; it != range.second; ++it)
{
const uint256& wtxid = it->second;
std::map<uint256, CWalletTx>::const_iterator mit = mapWallet.find(wtxid);
if (mit != mapWallet.end()) {
int depth = mit->second.GetDepthInMainChain();
if (depth > 0 || (depth == 0 && !mit->second.isAbandoned()))
return true; // Spent
}
}
return false;
}
void CWallet::AddToSpends(const COutPoint& outpoint, const uint256& wtxid)
{
mapTxSpends.insert(make_pair(outpoint, wtxid));
pair<TxSpends::iterator, TxSpends::iterator> range;
range = mapTxSpends.equal_range(outpoint);
SyncMetaData(range);
}
void CWallet::AddToSpends(const uint256& wtxid)
{
assert(mapWallet.count(wtxid));
CWalletTx& thisTx = mapWallet[wtxid];
if (thisTx.IsCoinBase()) // Coinbases don't spend anything!
return;
BOOST_FOREACH(const CTxIn& txin, thisTx.tx->vin)
AddToSpends(txin.prevout, wtxid);
}
bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
{
if (IsCrypted())
return false;
CKeyingMaterial vMasterKey;
vMasterKey.resize(WALLET_CRYPTO_KEY_SIZE);
GetStrongRandBytes(&vMasterKey[0], WALLET_CRYPTO_KEY_SIZE);
CMasterKey kMasterKey;
kMasterKey.vchSalt.resize(WALLET_CRYPTO_SALT_SIZE);
GetStrongRandBytes(&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)
{
assert(!pwalletdbEncryption);
pwalletdbEncryption = new CWalletDB(strWalletFile);
if (!pwalletdbEncryption->TxnBegin()) {
delete pwalletdbEncryption;
pwalletdbEncryption = NULL;
return false;
}
pwalletdbEncryption->WriteMasterKey(nMasterKeyMaxID, kMasterKey);
}
if (!EncryptKeys(vMasterKey))
{
if (fFileBacked) {
pwalletdbEncryption->TxnAbort();
delete pwalletdbEncryption;
}
// We now probably have half of our keys encrypted in memory, and half not...
// die and let the user reload the unencrypted wallet.
assert(false);
}
// Encryption was introduced in version 0.4.0
SetMinVersion(FEATURE_WALLETCRYPT, pwalletdbEncryption, true);
if (fFileBacked)
{
if (!pwalletdbEncryption->TxnCommit()) {
delete pwalletdbEncryption;
// We now have keys encrypted in memory, but not on disk...
// die to avoid confusion and let the user reload the unencrypted wallet.
assert(false);
}
delete pwalletdbEncryption;
pwalletdbEncryption = NULL;
}
Lock();
Unlock(strWalletPassphrase);
// if we are using HD, replace the HD master key (seed) with a new one
if (IsHDEnabled()) {
CKey key;
CPubKey masterPubKey = GenerateNewHDMasterKey();
if (!SetHDMasterKey(masterPubKey))
return false;
}
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;
}
DBErrors CWallet::ReorderTransactions()
{
LOCK(cs_wallet);
CWalletDB walletdb(strWalletFile);
// Old wallets didn't have any defined order for transactions
// Probably a bad idea to change the output of this
// First: get all CWalletTx and CAccountingEntry into a sorted-by-time multimap.
typedef pair<CWalletTx*, CAccountingEntry*> TxPair;
typedef multimap<int64_t, TxPair > TxItems;
TxItems txByTime;
for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
{
CWalletTx* wtx = &((*it).second);
txByTime.insert(make_pair(wtx->nTimeReceived, TxPair(wtx, (CAccountingEntry*)0)));
}
list<CAccountingEntry> acentries;
walletdb.ListAccountCreditDebit("", acentries);
BOOST_FOREACH(CAccountingEntry& entry, acentries)
{
txByTime.insert(make_pair(entry.nTime, TxPair((CWalletTx*)0, &entry)));
}
nOrderPosNext = 0;
std::vector<int64_t> nOrderPosOffsets;
for (TxItems::iterator it = txByTime.begin(); it != txByTime.end(); ++it)
{
CWalletTx *const pwtx = (*it).second.first;
CAccountingEntry *const pacentry = (*it).second.second;
int64_t& nOrderPos = (pwtx != 0) ? pwtx->nOrderPos : pacentry->nOrderPos;
if (nOrderPos == -1)
{
nOrderPos = nOrderPosNext++;
nOrderPosOffsets.push_back(nOrderPos);
if (pwtx)
{
if (!walletdb.WriteTx(*pwtx))
return DB_LOAD_FAIL;
}
else
if (!walletdb.WriteAccountingEntry(pacentry->nEntryNo, *pacentry))
return DB_LOAD_FAIL;
}
else
{
int64_t nOrderPosOff = 0;
BOOST_FOREACH(const int64_t& nOffsetStart, nOrderPosOffsets)
{
if (nOrderPos >= nOffsetStart)
++nOrderPosOff;
}
nOrderPos += nOrderPosOff;
nOrderPosNext = std::max(nOrderPosNext, nOrderPos + 1);
if (!nOrderPosOff)
continue;
// Since we're changing the order, write it back
if (pwtx)
{
if (!walletdb.WriteTx(*pwtx))
return DB_LOAD_FAIL;
}
else
if (!walletdb.WriteAccountingEntry(pacentry->nEntryNo, *pacentry))
return DB_LOAD_FAIL;
}
}
walletdb.WriteOrderPosNext(nOrderPosNext);
return DB_LOAD_OK;
}
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;
}
bool CWallet::AccountMove(std::string strFrom, std::string strTo, CAmount nAmount, std::string strComment)
{
CWalletDB walletdb(strWalletFile);
if (!walletdb.TxnBegin())
return false;
int64_t nNow = GetAdjustedTime();
// Debit
CAccountingEntry debit;
debit.nOrderPos = IncOrderPosNext(&walletdb);
debit.strAccount = strFrom;
debit.nCreditDebit = -nAmount;
debit.nTime = nNow;
debit.strOtherAccount = strTo;
debit.strComment = strComment;
AddAccountingEntry(debit, &walletdb);
// Credit
CAccountingEntry credit;
credit.nOrderPos = IncOrderPosNext(&walletdb);
credit.strAccount = strTo;
credit.nCreditDebit = nAmount;
credit.nTime = nNow;
credit.strOtherAccount = strFrom;
credit.strComment = strComment;
AddAccountingEntry(credit, &walletdb);
if (!walletdb.TxnCommit())
return false;
return true;
}
bool CWallet::GetAccountPubkey(CPubKey &pubKey, std::string strAccount, bool bForceNew)
{
CWalletDB walletdb(strWalletFile);
CAccount account;
walletdb.ReadAccount(strAccount, account);
if (!bForceNew) {
if (!account.vchPubKey.IsValid())
bForceNew = true;
else {
// Check if the current key has been used
CScript scriptPubKey = GetScriptForDestination(account.vchPubKey.GetID());
for (map<uint256, CWalletTx>::iterator it = mapWallet.begin();
it != mapWallet.end() && account.vchPubKey.IsValid();
++it)
BOOST_FOREACH(const CTxOut& txout, (*it).second.tx->vout)
if (txout.scriptPubKey == scriptPubKey) {
bForceNew = true;
break;
}
}
}
// Generate a new key
if (bForceNew) {
if (!GetKeyFromPool(account.vchPubKey))
return false;
SetAddressBook(account.vchPubKey.GetID(), strAccount, "receive");
walletdb.WriteAccount(strAccount, account);
}
pubKey = account.vchPubKey;
return true;
}
void CWallet::MarkDirty()
{
{
LOCK(cs_wallet);
BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
item.second.MarkDirty();
}
}
bool CWallet::MarkReplaced(const uint256& originalHash, const uint256& newHash)
{
LOCK(cs_wallet);
auto mi = mapWallet.find(originalHash);
// There is a bug if MarkReplaced is not called on an existing wallet transaction.
assert(mi != mapWallet.end());
CWalletTx& wtx = (*mi).second;
// Ensure for now that we're not overwriting data
assert(wtx.mapValue.count("replaced_by_txid") == 0);
wtx.mapValue["replaced_by_txid"] = newHash.ToString();
CWalletDB walletdb(strWalletFile, "r+");
bool success = true;
if (!walletdb.WriteTx(wtx)) {
LogPrintf("%s: Updating walletdb tx %s failed", __func__, wtx.GetHash().ToString());
success = false;
}
NotifyTransactionChanged(this, originalHash, CT_UPDATED);
return success;
}
bool CWallet::AddToWallet(const CWalletTx& wtxIn, bool fFlushOnClose)
{
LOCK(cs_wallet);
CWalletDB walletdb(strWalletFile, "r+", fFlushOnClose);
uint256 hash = wtxIn.GetHash();
// 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(&walletdb);
wtxOrdered.insert(make_pair(wtx.nOrderPos, TxPair(&wtx, (CAccountingEntry*)0)));
wtx.nTimeSmart = wtx.nTimeReceived;
if (!wtxIn.hashUnset())
{
if (mapBlockIndex.count(wtxIn.hashBlock))
{
int64_t latestNow = wtx.nTimeReceived;
int64_t 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;
const TxItems & txOrdered = wtxOrdered;
for (TxItems::const_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;
}
}
}
int64_t blocktime = mapBlockIndex[wtxIn.hashBlock]->GetBlockTime();
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());
}
AddToSpends(hash);
}
bool fUpdated = false;
if (!fInsertedNew)
{
// Merge
if (!wtxIn.hashUnset() && wtxIn.hashBlock != wtx.hashBlock)
{
wtx.hashBlock = wtxIn.hashBlock;
fUpdated = true;
}
// If no longer abandoned, update
if (wtxIn.hashBlock.IsNull() && wtx.isAbandoned())
{
wtx.hashBlock = wtxIn.hashBlock;
fUpdated = true;
}
if (wtxIn.nIndex != -1 && (wtxIn.nIndex != wtx.nIndex))
{
wtx.nIndex = wtxIn.nIndex;
fUpdated = true;
}
if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
{
wtx.fFromMe = wtxIn.fFromMe;
fUpdated = true;
}
}
//// debug print
LogPrintf("AddToWallet %s %s%s\n", wtxIn.GetHash().ToString(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
// Write to disk
if (fInsertedNew || fUpdated)
if (!walletdb.WriteTx(wtx))
return false;
// Break debit/credit balance caches:
wtx.MarkDirty();
// 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;
}