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wallet.cpp
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wallet.cpp
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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin Core developers
// Copyright (c) 2018-2023 Zen Blockchain Foundation
// Copyright (c) 2024 The Horizen Foundation
// 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 "coincontrol.h"
#include "consensus/validation.h"
#include "init.h"
#include "main.h"
#include "net.h"
#include "random.h"
#include "script/script.h"
#include "script/sign.h"
#include "timedata.h"
#include "utilmoneystr.h"
#include "zcash/Note.hpp"
#include "crypter.h"
#include "chainparams.h"
#include "zen/forkmanager.h"
using namespace zen;
#include <algorithm>
#include <assert.h>
#include <boost/algorithm/string/replace.hpp>
#include <boost/filesystem.hpp>
#include <boost/thread.hpp>
#include "sc/sidechain.h"
#include <univalue.h>
#include "rpc/protocol.h"
using namespace std;
using namespace libzcash;
using namespace Sidechain;
/**
* Settings
*/
CFeeRate payTxFee(DEFAULT_TRANSACTION_FEE);
CAmount maxTxFee = DEFAULT_TRANSACTION_MAXFEE;
unsigned int nTxConfirmTarget = DEFAULT_TX_CONFIRM_TARGET;
bool bSpendZeroConfChange = true;
bool fSendFreeTransactions = false;
bool fPayAtLeastCustomFee = true;
/**
* Fees smaller than this (in satoshi) are considered zero fee (for transaction creation)
* Override with -mintxfee
*/
CFeeRate CWallet::minTxFee = CFeeRate(1000);
/** @defgroup mapWallet
*
* @{
*/
struct CompareValueOnly
{
bool operator()(const pair<CAmount, pair<const CWalletTransactionBase*, unsigned int> >& t1,
const pair<CAmount, pair<const CWalletTransactionBase*, unsigned int> >& t2) const
{
return t1.first < t2.first;
}
};
std::string JSOutPoint::ToString() const
{
return strprintf("JSOutPoint(%s, %d, %d)", hash.ToString().substr(0,10), js, n);
}
std::string COutput::ToString() const
{
return strprintf("COutput(%s, %d, %d) [%s]",
tx->getTxBase()->GetHash().ToString(), pos, nDepth, FormatMoney(tx->getTxBase()->GetVout()[pos].nValue));
}
const CWalletTransactionBase* CWallet::GetWalletTx(const uint256& hash) const
{
LOCK(cs_wallet);
const MAP_WALLET_CONST_IT it = mapWallet.find(hash);
if (it == mapWallet.end())
return nullptr;
return it->second.get();
}
// Generate a new spending key and return its public payment address
CZCPaymentAddress CWallet::GenerateNewZKey()
{
AssertLockHeld(cs_wallet); // mapZKeyMetadata
auto k = SpendingKey::random();
auto addr = k.address();
// Check for collision, even though it is unlikely to ever occur
if (CCryptoKeyStore::HaveSpendingKey(addr))
throw std::runtime_error("CWallet::GenerateNewZKey(): Collision detected");
// Create new metadata
int64_t nCreationTime = GetTime();
mapZKeyMetadata[addr] = CKeyMetadata(nCreationTime);
CZCPaymentAddress pubaddr(addr);
if (!AddZKey(k))
throw std::runtime_error("CWallet::GenerateNewZKey(): AddZKey failed");
return pubaddr;
}
// Add spending key to keystore and persist to disk
bool CWallet::AddZKey(const libzcash::SpendingKey &key)
{
AssertLockHeld(cs_wallet); // mapZKeyMetadata
auto addr = key.address();
if (!CCryptoKeyStore::AddSpendingKey(key))
return false;
// check if we need to remove from viewing keys
if (HaveViewingKey(addr))
RemoveViewingKey(key.viewing_key());
if (!fFileBacked)
return true;
if (!IsCrypted()) {
return CWalletDB(strWalletFile).WriteZKey(addr,
key,
mapZKeyMetadata[addr]);
}
return true;
}
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;
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));
// 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;
// check if we need to remove from watch-only
CScript script;
script = GetScriptForDestination(pubkey.GetID(), false);
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::AddCryptedSpendingKey(const libzcash::PaymentAddress &address,
const libzcash::ReceivingKey &rk,
const std::vector<unsigned char> &vchCryptedSecret)
{
if (!CCryptoKeyStore::AddCryptedSpendingKey(address, rk, vchCryptedSecret))
return false;
if (!fFileBacked)
return true;
{
LOCK(cs_wallet);
if (pwalletdbEncryption) {
return pwalletdbEncryption->WriteCryptedZKey(address,
rk,
vchCryptedSecret,
mapZKeyMetadata[address]);
} else {
return CWalletDB(strWalletFile).WriteCryptedZKey(address,
rk,
vchCryptedSecret,
mapZKeyMetadata[address]);
}
}
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::LoadZKeyMetadata(const PaymentAddress &addr, const CKeyMetadata &meta)
{
AssertLockHeld(cs_wallet); // mapZKeyMetadata
mapZKeyMetadata[addr] = meta;
return true;
}
bool CWallet::LoadCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
{
return CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret);
}
bool CWallet::LoadCryptedZKey(const libzcash::PaymentAddress &addr, const libzcash::ReceivingKey &rk, const std::vector<unsigned char> &vchCryptedSecret)
{
return CCryptoKeyStore::AddCryptedSpendingKey(addr, rk, vchCryptedSecret);
}
bool CWallet::LoadZKey(const libzcash::SpendingKey &key)
{
return CCryptoKeyStore::AddSpendingKey(key);
}
bool CWallet::AddViewingKey(const libzcash::ViewingKey &vk)
{
if (!CCryptoKeyStore::AddViewingKey(vk)) {
return false;
}
nTimeFirstKey = 1; // No birthday information for viewing keys.
if (!fFileBacked) {
return true;
}
return CWalletDB(strWalletFile).WriteViewingKey(vk);
}
bool CWallet::RemoveViewingKey(const libzcash::ViewingKey &vk)
{
AssertLockHeld(cs_wallet);
if (!CCryptoKeyStore::RemoveViewingKey(vk)) {
return false;
}
if (fFileBacked) {
if (!CWalletDB(strWalletFile).EraseViewingKey(vk)) {
return false;
}
}
return true;
}
bool CWallet::LoadViewingKey(const libzcash::ViewingKey &vk)
{
return CCryptoKeyStore::AddViewingKey(vk);
}
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 = 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;
nTimeFirstKey = 1; // No birthday information for watch-only keys.
NotifyWatchonlyChanged(true);
if (!fFileBacked)
return true;
return CWalletDB(strWalletFile).WriteWatchOnly(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::ChainTip(const CBlockIndex *pindex, const CBlock *pblock,
ZCIncrementalMerkleTree tree, bool added)
{
if (added) {
IncrementNoteWitnesses(pindex, pblock, tree);
} else {
DecrementNoteWitnesses(pindex);
}
}
void CWallet::SetBestChain(const CBlockLocator& loc)
{
LogPrint("db", "%s():%d - called\n", __func__, __LINE__);
LOCK(cs_wallet);
CWalletDB walletdb(strWalletFile);
SetBestChainINTERNAL(walletdb, 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);
const MAP_WALLET_CONST_IT it = mapWallet.find(txid);
if (it == mapWallet.end())
return result;
const CWalletTransactionBase& wtx = *(it->second);
std::pair<TxSpends::const_iterator, TxSpends::const_iterator> range;
for(const CTxIn& txin: wtx.getTxBase()->GetVin()) {
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);
}
std::pair<TxNullifiers::const_iterator, TxNullifiers::const_iterator> range_n;
for (const JSDescription& jsdesc : wtx.getTxBase()->GetVjoinsplit()) {
for (const uint256& nullifier : jsdesc.nullifiers) {
if (mapTxNullifiers.count(nullifier) <= 1) {
continue; // No conflict if zero or one spends
}
range_n = mapTxNullifiers.equal_range(nullifier);
for (TxNullifiers::const_iterator it = range_n.first; it != range_n.second; ++it) {
result.insert(it->second);
}
}
}
return result;
}
void CWallet::Flush(bool shutdown)
{
bitdb.Flush(shutdown);
}
bool CWallet::Verify(const string& walletFile, string& warningString, string& errorString)
{
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
string msg = strprintf(_("Error initializing wallet database environment %s!"), GetDataDir());
errorString += msg;
return true;
}
}
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)
{
warningString += strprintf(_("Warning: wallet.dat corrupt, data salvaged!"
" Original wallet.dat saved as wallet.{timestamp}.bak in %s; if"
" your balance or transactions are incorrect you should"
" restore from a backup."), GetDataDir());
}
if (r == CDBEnv::RECOVER_FAIL)
errorString += _("wallet.dat corrupt, salvage failed");
}
return true;
}
template <class T>
void CWallet::SyncMetaData(pair<typename TxSpendMap<T>::iterator, typename TxSpendMap<T>::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 CWalletTransactionBase* copyFrom = NULL;
for (typename TxSpendMap<T>::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].get();
}
}
// Now copy data from copyFrom to rest:
for (typename TxSpendMap<T>::iterator it = range.first; it != range.second; ++it)
{
const uint256& hash = it->second;
CWalletTransactionBase* copyTo = mapWallet[hash].get();
if (copyFrom == copyTo) continue;
copyTo->mapValue = copyFrom->mapValue;
// mapNoteData not copied on purpose
// (it is always set correctly for each CWalletTx)
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;
const MAP_WALLET_CONST_IT mit = mapWallet.find(wtxid);
if (mit != mapWallet.end()) {
if (mit->second->GetDepthInMainChain() >= 0) {
return true; // Spent
} else {
LogPrint("cert", "%s():%d - obj[%s] has depth %d\n", __func__, __LINE__,
wtxid.ToString(), mit->second->GetDepthInMainChain());
}
}
}
return false;
}
/**
* Note is spent if any non-conflicted transaction
* spends it:
*/
bool CWallet::IsSpent(const uint256& nullifier) const
{
pair<TxNullifiers::const_iterator, TxNullifiers::const_iterator> range;
range = mapTxNullifiers.equal_range(nullifier);
for (TxNullifiers::const_iterator it = range.first; it != range.second; ++it) {
const uint256& wtxid = it->second;
const MAP_WALLET_CONST_IT mit = mapWallet.find(wtxid);
if (mit != mapWallet.end() && mit->second->GetDepthInMainChain() >= 0) {
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<COutPoint>(range);
}
void CWallet::AddToSpends(const uint256& nullifier, const uint256& wtxid)
{
mapTxNullifiers.insert(make_pair(nullifier, wtxid));
pair<TxNullifiers::iterator, TxNullifiers::iterator> range;
range = mapTxNullifiers.equal_range(nullifier);
SyncMetaData<uint256>(range);
}
void CWallet::AddToSpends(const uint256& wtxid)
{
assert(mapWallet.count(wtxid));
CWalletTransactionBase& thisTx = *(mapWallet[wtxid]);
if (thisTx.getTxBase()->IsCoinBase()) // Coinbases don't spend anything!
return;
for (const CTxIn& txin : thisTx.getTxBase()->GetVin()) {
LogPrint("cert", "%s():%d - obj[%s] spends out %d of [%s]\n", __func__, __LINE__,
thisTx.getTxBase()->GetHash().ToString(), txin.prevout.n, txin.prevout.hash.ToString());
AddToSpends(txin.prevout, wtxid);
}
for (const JSDescription& jsdesc : thisTx.getTxBase()->GetVjoinsplit()) {
for (const uint256& nullifier : jsdesc.nullifiers) {
AddToSpends(nullifier, wtxid);
}
}
}
void CWallet::ClearNoteWitnessCache()
{
LOCK(cs_wallet);
for (std::pair<const uint256, std::shared_ptr<CWalletTransactionBase> >& wtxItem : mapWallet) {
for (mapNoteData_t::value_type& item : wtxItem.second->mapNoteData) {
item.second.witnesses.clear();
item.second.witnessHeight = -1;
}
}
nWitnessCacheSize = 0;
}
void CWallet::IncrementNoteWitnesses(const CBlockIndex* pindex,
const CBlock* pblockIn,
ZCIncrementalMerkleTree& tree)
{
{
LOCK(cs_wallet);
for (auto& wtxItem : mapWallet)
{
for (mapNoteData_t::value_type& item : wtxItem.second->mapNoteData) {
CNoteData* nd = &(item.second);
// Only increment witnesses that are behind the current height
if (nd->witnessHeight < pindex->nHeight) {
// Check the validity of the cache
// The only time a note witnessed above the current height
// would be invalid here is during a reindex when blocks
// have been decremented, and we are incrementing the blocks
// immediately after.
assert(nWitnessCacheSize >= nd->witnesses.size());
// Witnesses being incremented should always be either -1
// (never incremented or decremented) or one below pindex
assert((nd->witnessHeight == -1) ||
(nd->witnessHeight == pindex->nHeight - 1));
// Copy the witness for the previous block if we have one
if (nd->witnesses.size() > 0) {
nd->witnesses.push_front(nd->witnesses.front());
}
if (nd->witnesses.size() > WITNESS_CACHE_SIZE) {
nd->witnesses.pop_back();
}
}
}
}
if (nWitnessCacheSize < WITNESS_CACHE_SIZE) {
nWitnessCacheSize += 1;
}
const CBlock* pblock {pblockIn};
CBlock block;
if (!pblock) {
ReadBlockFromDisk(block, pindex);
pblock = █
}
for (const CTransaction& tx : pblock->vtx) {
auto hash = tx.GetHash();
bool txIsOurs = mapWallet.count(hash);
for (size_t i = 0; i < tx.GetVjoinsplit().size(); i++) {
const JSDescription& jsdesc = tx.GetVjoinsplit()[i];
for (uint8_t j = 0; j < jsdesc.commitments.size(); j++) {
const uint256& note_commitment = jsdesc.commitments[j];
tree.append(note_commitment);
// Increment existing witnesses
for (auto& wtxItem : mapWallet)
{
for (mapNoteData_t::value_type& item : wtxItem.second->mapNoteData) {
CNoteData* nd = &(item.second);
if (nd->witnessHeight < pindex->nHeight &&
nd->witnesses.size() > 0) {
// Check the validity of the cache
// See earlier comment about validity.
assert(nWitnessCacheSize >= nd->witnesses.size());
nd->witnesses.front().append(note_commitment);
}
}
}
// If this is our note, witness it
if (txIsOurs) {
JSOutPoint jsoutpt {hash, i, j};
if (mapWallet[hash]->mapNoteData.count(jsoutpt) &&
mapWallet[hash]->mapNoteData[jsoutpt].witnessHeight < pindex->nHeight) {
CNoteData* nd = &(mapWallet[hash]->mapNoteData[jsoutpt]);
if (nd->witnesses.size() > 0) {
// We think this can happen because we write out the
// witness cache state after every block increment or
// decrement, but the block index itself is written in
// batches. So if the node crashes in between these two
// operations, it is possible for IncrementNoteWitnesses
// to be called again on previously-cached blocks. This
// doesn't affect existing cached notes because of the
// CNoteData::witnessHeight checks. See #1378 for details.
LogPrintf("Inconsistent witness cache state found for %s\n- Cache size: %d\n- Top (height %d): %s\n- New (height %d): %s\n",
jsoutpt.ToString(), nd->witnesses.size(),
nd->witnessHeight,
nd->witnesses.front().root().GetHex(),
pindex->nHeight,
tree.witness().root().GetHex());
nd->witnesses.clear();
}
nd->witnesses.push_front(tree.witness());
// Set height to one less than pindex so it gets incremented
nd->witnessHeight = pindex->nHeight - 1;
// Check the validity of the cache
assert(nWitnessCacheSize >= nd->witnesses.size());
}
}
}
}
}
// Update witness heights
for (auto& wtxItem : mapWallet)
{
for (mapNoteData_t::value_type& item : wtxItem.second->mapNoteData) {
CNoteData* nd = &(item.second);
if (nd->witnessHeight < pindex->nHeight) {
nd->witnessHeight = pindex->nHeight;
// Check the validity of the cache
// See earlier comment about validity.
assert(nWitnessCacheSize >= nd->witnesses.size());
}
}
}
// For performance reasons, we write out the witness cache in
// CWallet::SetBestChain() (which also ensures that overall consistency
// of the wallet.dat is maintained).
}
}
void CWallet::DecrementNoteWitnesses(const CBlockIndex* pindex)
{
{
LOCK(cs_wallet);
for (auto& wtxItem : mapWallet)
{
for (mapNoteData_t::value_type& item : wtxItem.second->mapNoteData) {
CNoteData* nd = &(item.second);
// Only increment witnesses that are not above the current height
if (nd->witnessHeight <= pindex->nHeight) {
// Check the validity of the cache
// See comment below (this would be invalid if there was a
// prior decrement).
assert(nWitnessCacheSize >= nd->witnesses.size());
// Witnesses being decremented should always be either -1
// (never incremented or decremented) or equal to pindex
assert((nd->witnessHeight == -1) ||
(nd->witnessHeight == pindex->nHeight));
if (nd->witnesses.size() > 0) {
nd->witnesses.pop_front();
}
// pindex is the block being removed, so the new witness cache
// height is one below it.
nd->witnessHeight = pindex->nHeight - 1;
}
}
}
nWitnessCacheSize -= 1;
for (auto& wtxItem : mapWallet)
{
for (mapNoteData_t::value_type& item : wtxItem.second->mapNoteData) {
CNoteData* nd = &(item.second);
// Check the validity of the cache
// Technically if there are notes witnessed above the current
// height, their cache will now be invalid (relative to the new
// value of nWitnessCacheSize). However, this would only occur
// during a reindex, and by the time the reindex reaches the tip
// of the chain again, the existing witness caches will be valid
// again.
// We don't set nWitnessCacheSize to zero at the start of the
// reindex because the on-disk blocks had already resulted in a
// chain that didn't trigger the assertion below.
if (nd->witnessHeight < pindex->nHeight) {
assert(nWitnessCacheSize >= nd->witnesses.size());
}
}
}
// TODO: If nWitnessCache is zero, we need to regenerate the caches (#1302)
assert(nWitnessCacheSize > 0);
// For performance reasons, we write out the witness cache in
// CWallet::SetBestChain() (which also ensures that overall consistency
// of the wallet.dat is maintained).
}
}
bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
{
if (IsCrypted())
return false;
CKeyingMaterial vMasterKey;
vMasterKey.resize(WALLET_CRYPTO_KEY_SIZE);
GetRandBytes(&vMasterKey[0], WALLET_CRYPTO_KEY_SIZE);
CMasterKey kMasterKey;
kMasterKey.vchSalt.resize(WALLET_CRYPTO_SALT_SIZE);
GetRandBytes(&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);
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;
}
vTxWithInputs CWallet::OrderedTxWithInputs(const std::string& address) const
{
AssertLockHeld(cs_wallet);
CWalletDB walletdb(strWalletFile);
vTxWithInputs vOrderedTxes;
CBitcoinAddress taddr = CBitcoinAddress(address);
if (!taddr.IsValid())
{
// taddr should be checked by the caller
return vOrderedTxes;
}
const CScript& scriptPubKey = GetScriptForDestination(taddr.Get(), false);
// tx are ordered in this map, from the oldest to the newest. As a consequence, the returned vector is ordered
// as well
for (auto it : wtxOrdered)
{
CWalletTransactionBase* wtx = it.second.first;
int64_t orderPos = it.first;
LogPrintf("%s():%d - processing ordered tx: nOrderPos[%d]: tx[%s]\n", __func__, __LINE__,
orderPos, wtx->getTxBase()->GetHash().ToString() );
if (wtx->GetDepthInMainChain() < 0) {