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wallet.cpp
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wallet.cpp
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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2015 The Bitcoin Core developers
// Copyright (c) 2014-2019 The Dash 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 "fs.h"
#include "init.h"
#include "key.h"
#include "keystore.h"
#include "validation.h"
#include "net.h"
#include "policy/fees.h"
#include "policy/policy.h"
#include "primitives/block.h"
#include "primitives/transaction.h"
#include "script/script.h"
#include "script/sign.h"
#include "scheduler.h"
#include "timedata.h"
#include "txmempool.h"
#include "util.h"
#include "ui_interface.h"
#include "utilmoneystr.h"
#include "governance/governance.h"
#include "keepass.h"
#include "privatesend/privatesend-client.h"
#include "spork.h"
#include "evo/providertx.h"
#include "llmq/quorums_instantsend.h"
#include "llmq/quorums_chainlocks.h"
#include <assert.h>
#include <boost/algorithm/string/replace.hpp>
#include <boost/thread.hpp>
std::vector<CWalletRef> vpwallets;
/** Transaction fee set by the user */
CFeeRate payTxFee(DEFAULT_TRANSACTION_FEE);
unsigned int nTxConfirmTarget = DEFAULT_TX_CONFIRM_TARGET;
bool bSpendZeroConfChange = DEFAULT_SPEND_ZEROCONF_CHANGE;
const char * DEFAULT_WALLET_DAT = "wallet.dat";
/**
* Fees smaller than this (in duffs) 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);
CFeeRate CWallet::m_discard_rate = CFeeRate(DEFAULT_DISCARD_FEE);
const uint256 CMerkleTx::ABANDON_HASH(uint256S("0000000000000000000000000000000000000000000000000000000000000001"));
/** @defgroup mapWallet
*
* @{
*/
struct CompareValueOnly
{
bool operator()(const CInputCoin& t1,
const CInputCoin& t2) const
{
return t1.txout.nValue < t2.txout.nValue;
}
};
std::string COutput::ToString() const
{
return strprintf("COutput(%s, %d, %d) [%s]", tx->GetHash().ToString(), i, nDepth, FormatMoney(tx->tx->vout[i].nValue));
}
class CAffectedKeysVisitor : public boost::static_visitor<void> {
private:
const CKeyStore &keystore;
std::vector<CKeyID> &vKeys;
public:
CAffectedKeysVisitor(const CKeyStore &keystoreIn, std::vector<CKeyID> &vKeysIn) : keystore(keystoreIn), vKeys(vKeysIn) {}
void Process(const CScript &script) {
txnouttype type;
std::vector<CTxDestination> vDest;
int nRequired;
if (ExtractDestinations(script, type, vDest, nRequired)) {
for (const CTxDestination &dest : vDest)
boost::apply_visitor(*this, dest);
}
}
void operator()(const CKeyID &keyId) {
if (keystore.HaveKey(keyId))
vKeys.push_back(keyId);
}
void operator()(const CScriptID &scriptId) {
CScript script;
if (keystore.GetCScript(scriptId, script))
Process(script);
}
void operator()(const CNoDestination &none) {}
};
int COutput::Priority() const
{
for (const auto& d : CPrivateSend::GetStandardDenominations()) {
// large denoms have lower value
if(tx->tx->vout[i].nValue == d) return (float)COIN / d * 10000;
}
if(tx->tx->vout[i].nValue < 1*COIN) return 20000;
//nondenom return largest first
return -(tx->tx->vout[i].nValue/COIN);
}
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 nullptr;
return &(it->second);
}
CPubKey CWallet::GenerateNewKey(CWalletDB &walletdb, uint32_t nAccountIndex, bool fInternal)
{
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);
CPubKey pubkey;
// use HD key derivation if HD was enabled during wallet creation
if (IsHDEnabled()) {
DeriveNewChildKey(walletdb, metadata, secret, nAccountIndex, fInternal);
pubkey = secret.GetPubKey();
} else {
secret.MakeNewKey(fCompressed);
// Compressed public keys were introduced in version 0.6.0
if (fCompressed) {
SetMinVersion(FEATURE_COMPRPUBKEY);
}
pubkey = secret.GetPubKey();
assert(secret.VerifyPubKey(pubkey));
// Create new metadata
mapKeyMetadata[pubkey.GetID()] = metadata;
UpdateTimeFirstKey(nCreationTime);
if (!AddKeyPubKeyWithDB(walletdb, secret, pubkey)) {
throw std::runtime_error(std::string(__func__) + ": AddKey failed");
}
}
return pubkey;
}
void CWallet::DeriveNewChildKey(CWalletDB &walletdb, const CKeyMetadata& metadata, CKey& secretRet, uint32_t nAccountIndex, bool fInternal)
{
CHDChain hdChainTmp;
if (!GetHDChain(hdChainTmp)) {
throw std::runtime_error(std::string(__func__) + ": GetHDChain failed");
}
if (!DecryptHDChain(hdChainTmp))
throw std::runtime_error(std::string(__func__) + ": DecryptHDChainSeed failed");
// make sure seed matches this chain
if (hdChainTmp.GetID() != hdChainTmp.GetSeedHash())
throw std::runtime_error(std::string(__func__) + ": Wrong HD chain!");
CHDAccount acc;
if (!hdChainTmp.GetAccount(nAccountIndex, acc))
throw std::runtime_error(std::string(__func__) + ": Wrong HD account!");
// derive child key at next index, skip keys already known to the wallet
CExtKey childKey;
uint32_t nChildIndex = fInternal ? acc.nInternalChainCounter : acc.nExternalChainCounter;
do {
hdChainTmp.DeriveChildExtKey(nAccountIndex, fInternal, nChildIndex, childKey);
// increment childkey index
nChildIndex++;
} while (HaveKey(childKey.key.GetPubKey().GetID()));
secretRet = childKey.key;
CPubKey pubkey = secretRet.GetPubKey();
assert(secretRet.VerifyPubKey(pubkey));
// store metadata
mapKeyMetadata[pubkey.GetID()] = metadata;
UpdateTimeFirstKey(metadata.nCreateTime);
// update the chain model in the database
CHDChain hdChainCurrent;
GetHDChain(hdChainCurrent);
if (fInternal) {
acc.nInternalChainCounter = nChildIndex;
}
else {
acc.nExternalChainCounter = nChildIndex;
}
if (!hdChainCurrent.SetAccount(nAccountIndex, acc))
throw std::runtime_error(std::string(__func__) + ": SetAccount failed");
if (IsCrypted()) {
if (!SetCryptedHDChain(walletdb, hdChainCurrent, false))
throw std::runtime_error(std::string(__func__) + ": SetCryptedHDChain failed");
}
else {
if (!SetHDChain(walletdb, hdChainCurrent, false))
throw std::runtime_error(std::string(__func__) + ": SetHDChain failed");
}
if (!AddHDPubKey(walletdb, childKey.Neuter(), fInternal))
throw std::runtime_error(std::string(__func__) + ": AddHDPubKey failed");
}
bool CWallet::GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const
{
LOCK(cs_wallet);
std::map<CKeyID, CHDPubKey>::const_iterator mi = mapHdPubKeys.find(address);
if (mi != mapHdPubKeys.end())
{
const CHDPubKey &hdPubKey = (*mi).second;
vchPubKeyOut = hdPubKey.extPubKey.pubkey;
return true;
}
else
return CCryptoKeyStore::GetPubKey(address, vchPubKeyOut);
}
bool CWallet::GetKey(const CKeyID &address, CKey& keyOut) const
{
LOCK(cs_wallet);
std::map<CKeyID, CHDPubKey>::const_iterator mi = mapHdPubKeys.find(address);
if (mi != mapHdPubKeys.end())
{
// if the key has been found in mapHdPubKeys, derive it on the fly
const CHDPubKey &hdPubKey = (*mi).second;
CHDChain hdChainCurrent;
if (!GetHDChain(hdChainCurrent))
throw std::runtime_error(std::string(__func__) + ": GetHDChain failed");
if (!DecryptHDChain(hdChainCurrent))
throw std::runtime_error(std::string(__func__) + ": DecryptHDChainSeed failed");
// make sure seed matches this chain
if (hdChainCurrent.GetID() != hdChainCurrent.GetSeedHash())
throw std::runtime_error(std::string(__func__) + ": Wrong HD chain!");
CExtKey extkey;
hdChainCurrent.DeriveChildExtKey(hdPubKey.nAccountIndex, hdPubKey.nChangeIndex != 0, hdPubKey.extPubKey.nChild, extkey);
keyOut = extkey.key;
return true;
}
else {
return CCryptoKeyStore::GetKey(address, keyOut);
}
}
bool CWallet::HaveKey(const CKeyID &address) const
{
LOCK(cs_wallet);
if (mapHdPubKeys.count(address) > 0)
return true;
return CCryptoKeyStore::HaveKey(address);
}
bool CWallet::LoadHDPubKey(const CHDPubKey &hdPubKey)
{
AssertLockHeld(cs_wallet);
mapHdPubKeys[hdPubKey.extPubKey.pubkey.GetID()] = hdPubKey;
return true;
}
bool CWallet::AddHDPubKey(CWalletDB &walletdb, const CExtPubKey &extPubKey, bool fInternal)
{
AssertLockHeld(cs_wallet);
CHDChain hdChainCurrent;
GetHDChain(hdChainCurrent);
CHDPubKey hdPubKey;
hdPubKey.extPubKey = extPubKey;
hdPubKey.hdchainID = hdChainCurrent.GetID();
hdPubKey.nChangeIndex = fInternal ? 1 : 0;
mapHdPubKeys[extPubKey.pubkey.GetID()] = hdPubKey;
// check if we need to remove from watch-only
CScript script;
script = GetScriptForDestination(extPubKey.pubkey.GetID());
if (HaveWatchOnly(script))
RemoveWatchOnly(script);
script = GetScriptForRawPubKey(extPubKey.pubkey);
if (HaveWatchOnly(script))
RemoveWatchOnly(script);
return walletdb.WriteHDPubKey(hdPubKey, mapKeyMetadata[extPubKey.pubkey.GetID()]);
}
bool CWallet::AddKeyPubKeyWithDB(CWalletDB &walletdb, const CKey& secret, const CPubKey &pubkey)
{
AssertLockHeld(cs_wallet); // mapKeyMetadata
// CCryptoKeyStore has no concept of wallet databases, but calls AddCryptedKey
// which is overridden below. To avoid flushes, the database handle is
// tunneled through to it.
bool needsDB = !pwalletdbEncryption;
if (needsDB) {
pwalletdbEncryption = &walletdb;
}
if (!CCryptoKeyStore::AddKeyPubKey(secret, pubkey)) {
if (needsDB) pwalletdbEncryption = NULL;
return false;
return false;
}
if (needsDB) pwalletdbEncryption = NULL;
// 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 (!IsCrypted()) {
return walletdb.WriteKey(pubkey,
secret.GetPrivKey(),
mapKeyMetadata[pubkey.GetID()]);
}
return true;
}
bool CWallet::AddKeyPubKey(const CKey& secret, const CPubKey &pubkey)
{
CWalletDB walletdb(*dbw);
return CWallet::AddKeyPubKeyWithDB(walletdb, secret, pubkey);
}
bool CWallet::AddCryptedKey(const CPubKey &vchPubKey,
const std::vector<unsigned char> &vchCryptedSecret)
{
if (!CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret))
return false;
{
LOCK(cs_wallet);
if (pwalletdbEncryption)
return pwalletdbEncryption->WriteCryptedKey(vchPubKey,
vchCryptedSecret,
mapKeyMetadata[vchPubKey.GetID()]);
else
return CWalletDB(*dbw).WriteCryptedKey(vchPubKey,
vchCryptedSecret,
mapKeyMetadata[vchPubKey.GetID()]);
}
}
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);
}
/**
* Update wallet first key creation time. This should be called whenever keys
* are added to the wallet, with the oldest key creation time.
*/
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;
return CWalletDB(*dbw).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 = CBitcoinAddress(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);
return CWalletDB(*dbw).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 (!CWalletDB(*dbw).EraseWatchOnly(dest))
return false;
return true;
}
bool CWallet::LoadWatchOnly(const CScript &dest)
{
return CCryptoKeyStore::AddWatchOnly(dest);
}
bool CWallet::Unlock(const SecureString& strWalletPassphrase, bool fForMixingOnly)
{
SecureString strWalletPassphraseFinal;
if (!IsLocked()) // was already fully unlocked, not only for mixing
return true;
// Verify KeePassIntegration
if (strWalletPassphrase == "keepass" && gArgs.GetBoolArg("-keepass", false)) {
try {
strWalletPassphraseFinal = keePassInt.retrievePassphrase();
} catch (std::exception& e) {
LogPrintf("CWallet::Unlock could not retrieve passphrase from KeePass: Error: %s\n", e.what());
return false;
}
} else {
strWalletPassphraseFinal = strWalletPassphrase;
}
CCrypter crypter;
CKeyingMaterial _vMasterKey;
{
LOCK(cs_wallet);
for (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))
continue; // try another master key
if (CCryptoKeyStore::Unlock(_vMasterKey, fForMixingOnly)) {
if(nWalletBackups == -2) {
TopUpKeyPool();
LogPrintf("Keypool replenished, re-initializing automatic backups.\n");
nWalletBackups = gArgs.GetArg("-createwalletbackups", 10);
}
return true;
}
}
}
return false;
}
bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase)
{
bool fWasLocked = IsLocked(true);
bool bUseKeePass = false;
SecureString strOldWalletPassphraseFinal;
// Verify KeePassIntegration
if(strOldWalletPassphrase == "keepass" && gArgs.GetBoolArg("-keepass", false)) {
bUseKeePass = true;
try {
strOldWalletPassphraseFinal = keePassInt.retrievePassphrase();
} catch (std::exception& e) {
LogPrintf("CWallet::ChangeWalletPassphrase -- could not retrieve passphrase from KeePass: Error: %s\n", e.what());
return false;
}
} else {
strOldWalletPassphraseFinal = strOldWalletPassphrase;
}
{
LOCK(cs_wallet);
Lock();
CCrypter crypter;
CKeyingMaterial _vMasterKey;
for (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))
{
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(*dbw).WriteMasterKey(pMasterKey.first, pMasterKey.second);
if (fWasLocked)
Lock();
// Update KeePass if necessary
if(bUseKeePass) {
LogPrintf("CWallet::ChangeWalletPassphrase -- Updating KeePass with new passphrase");
try {
keePassInt.updatePassphrase(strNewWalletPassphrase);
} catch (std::exception& e) {
LogPrintf("CWallet::ChangeWalletPassphrase -- could not update passphrase in KeePass: Error: %s\n", e.what());
return false;
}
}
return true;
}
}
}
return false;
}
void CWallet::SetBestChain(const CBlockLocator& loc)
{
CWalletDB walletdb(*dbw);
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;
{
CWalletDB* pwalletdb = pwalletdbIn ? pwalletdbIn : new CWalletDB(*dbw);
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;
}
std::set<uint256> CWallet::GetConflicts(const uint256& txid) const
{
std::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;
for (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;
}
void CWallet::Flush(bool shutdown)
{
dbw->Flush(shutdown);
}
bool CWallet::Verify()
{
if (gArgs.GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET))
return true;
uiInterface.InitMessage(_("Verifying wallet(s)..."));
// Keep track of each wallet absolute path to detect duplicates.
std::set<fs::path> wallet_paths;
for (const std::string& walletFile : gArgs.GetArgs("-wallet")) {
if (boost::filesystem::path(walletFile).filename() != walletFile) {
return InitError(strprintf(_("Error loading wallet %s. -wallet parameter must only specify a filename (not a path)."), walletFile));
}
if (SanitizeString(walletFile, SAFE_CHARS_FILENAME) != walletFile) {
return InitError(strprintf(_("Error loading wallet %s. Invalid characters in -wallet filename."), walletFile));
}
fs::path wallet_path = fs::absolute(walletFile, GetDataDir());
if (fs::exists(wallet_path) && (!fs::is_regular_file(wallet_path) || fs::is_symlink(wallet_path))) {
return InitError(strprintf(_("Error loading wallet %s. -wallet filename must be a regular file."), walletFile));
}
if (!wallet_paths.insert(wallet_path).second) {
return InitError(strprintf(_("Error loading wallet %s. Duplicate -wallet filename specified."), walletFile));
}
std::string strError;
if (!CWalletDB::VerifyEnvironment(walletFile, GetDataDir().string(), strError)) {
return InitError(strError);
}
if (gArgs.GetBoolArg("-salvagewallet", false)) {
// Recover readable keypairs:
CWallet dummyWallet;
std::string backup_filename;
if (!CWalletDB::Recover(walletFile, (void *)&dummyWallet, CWalletDB::RecoverKeysOnlyFilter, backup_filename)) {
return false;
}
}
std::string strWarning;
bool dbV = CWalletDB::VerifyDatabaseFile(walletFile, GetDataDir().string(), strWarning, strError);
if (!strWarning.empty()) {
InitWarning(strWarning);
}
if (!dbV) {
InitError(strError);
return false;
}
}
return true;
}
void CWallet::SyncMetaData(std::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 = nullptr;
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);
std::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(std::make_pair(outpoint, wtxid));
setWalletUTXO.erase(outpoint);
std::pair<TxSpends::iterator, TxSpends::iterator> range;
range = mapTxSpends.equal_range(outpoint);
SyncMetaData(range);
}
void CWallet::AddToSpends(const uint256& wtxid)
{
auto it = mapWallet.find(wtxid);
assert(it != mapWallet.end());
CWalletTx& thisTx = it->second;
if (thisTx.IsCoinBase()) // Coinbases don't spend anything!
return;
for (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;
assert(!pwalletdbEncryption);
pwalletdbEncryption = new CWalletDB(*dbw);
if (!pwalletdbEncryption->TxnBegin()) {
delete pwalletdbEncryption;
pwalletdbEncryption = nullptr;
return false;
}
pwalletdbEncryption->WriteMasterKey(nMasterKeyMaxID, kMasterKey);
// must get current HD chain before EncryptKeys
CHDChain hdChainCurrent;
GetHDChain(hdChainCurrent);
if (!EncryptKeys(_vMasterKey))
{
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);
}
if (!hdChainCurrent.IsNull()) {
assert(EncryptHDChain(_vMasterKey));
CHDChain hdChainCrypted;
assert(GetHDChain(hdChainCrypted));
DBG(
printf("EncryptWallet -- current seed: '%s'\n", HexStr(hdChainCurrent.GetSeed()).c_str());
printf("EncryptWallet -- crypted seed: '%s'\n", HexStr(hdChainCrypted.GetSeed()).c_str());
);
// ids should match, seed hashes should not
assert(hdChainCurrent.GetID() == hdChainCrypted.GetID());
assert(hdChainCurrent.GetSeedHash() != hdChainCrypted.GetSeedHash());
assert(SetCryptedHDChain(*pwalletdbEncryption, hdChainCrypted, false));
}
// Encryption was introduced in version 0.4.0
SetMinVersion(FEATURE_WALLETCRYPT, pwalletdbEncryption, true);
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 = nullptr;
Lock();
Unlock(strWalletPassphrase);
// if we are not using HD, generate new keypool
if(IsHDEnabled()) {
TopUpKeyPool();
}
else {
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.
dbw->Rewrite();
// Update KeePass if necessary
if(gArgs.GetBoolArg("-keepass", false)) {
LogPrintf("CWallet::EncryptWallet -- Updating KeePass with new passphrase");
try {
keePassInt.updatePassphrase(strWalletPassphrase);
} catch (std::exception& e) {
LogPrintf("CWallet::EncryptWallet -- could not update passphrase in KeePass: Error: %s\n", e.what());
}
}
}
NotifyStatusChanged(this);
return true;
}
DBErrors CWallet::ReorderTransactions()
{
LOCK(cs_wallet);
CWalletDB walletdb(*dbw);
// 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 std::pair<CWalletTx*, CAccountingEntry*> TxPair;
typedef std::multimap<int64_t, TxPair > TxItems;
TxItems txByTime;
for (std::map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
{
CWalletTx* wtx = &((*it).second);
txByTime.insert(std::make_pair(wtx->nTimeReceived, TxPair(wtx, nullptr)));
}
std::list<CAccountingEntry> acentries;
walletdb.ListAccountCreditDebit("", acentries);
for (CAccountingEntry& entry : acentries)
{
txByTime.insert(std::make_pair(entry.nTime, TxPair(nullptr, &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 != nullptr) ? 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;
for (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);