diff options
Diffstat (limited to 'src/wallet.cpp')
| -rw-r--r-- | src/wallet.cpp | 275 |
1 files changed, 243 insertions, 32 deletions
diff --git a/src/wallet.cpp b/src/wallet.cpp index fa57755242..3e1bb8e287 100644 --- a/src/wallet.cpp +++ b/src/wallet.cpp @@ -5,11 +5,11 @@ #include "headers.h" #include "db.h" #include "cryptopp/sha.h" +#include "crypter.h" using namespace std; - ////////////////////////////////////////////////////////////////////////////// // // mapWallet @@ -17,10 +17,181 @@ using namespace std; bool CWallet::AddKey(const CKey& key) { - this->CKeyStore::AddKey(key); + if (!CCryptoKeyStore::AddKey(key)) + return false; if (!fFileBacked) return true; - return CWalletDB(strWalletFile).WriteKey(key.GetPubKey(), key.GetPrivKey()); + if (!IsCrypted()) + return CWalletDB(strWalletFile).WriteKey(key.GetPubKey(), key.GetPrivKey()); + return true; +} + +bool CWallet::AddCryptedKey(const vector<unsigned char> &vchPubKey, const vector<unsigned char> &vchCryptedSecret) +{ + if (!CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret)) + return false; + if (!fFileBacked) + return true; + CRITICAL_BLOCK(cs_pwalletdbEncryption) + { + if (pwalletdbEncryption) + return pwalletdbEncryption->WriteCryptedKey(vchPubKey, vchCryptedSecret); + else + return CWalletDB(strWalletFile).WriteCryptedKey(vchPubKey, vchCryptedSecret); + } +} + +bool CWallet::Unlock(const string& strWalletPassphrase) +{ + CRITICAL_BLOCK(cs_vMasterKey) + { + if (!IsLocked()) + return false; + + CCrypter crypter; + CKeyingMaterial vMasterKey; + + 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)) + return false; + if (CCryptoKeyStore::Unlock(vMasterKey)) + return true; + } + } + return false; +} + +bool CWallet::ChangeWalletPassphrase(const string& strOldWalletPassphrase, const string& strNewWalletPassphrase) +{ + CRITICAL_BLOCK(cs_vMasterKey) + { + bool fWasLocked = IsLocked(); + + 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 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; + + printf("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; +} + + +// This class implements an addrIncoming entry that causes pre-0.4 +// clients to crash on startup if reading a private-key-encrypted wallet. +class CCorruptAddress +{ +public: + IMPLEMENT_SERIALIZE + ( + if (nType & SER_DISK) + READWRITE(nVersion); + ) +}; + +bool CWallet::EncryptWallet(const string& strWalletPassphrase) +{ + CRITICAL_BLOCK(cs_mapPubKeys) + CRITICAL_BLOCK(cs_KeyStore) + CRITICAL_BLOCK(cs_vMasterKey) + CRITICAL_BLOCK(cs_pwalletdbEncryption) + { + if (IsCrypted()) + return false; + + CKeyingMaterial vMasterKey; + RandAddSeedPerfmon(); + + vMasterKey.resize(WALLET_CRYPTO_KEY_SIZE); + RAND_bytes(&vMasterKey[0], WALLET_CRYPTO_KEY_SIZE); + + CMasterKey kMasterKey; + + RandAddSeedPerfmon(); + kMasterKey.vchSalt.resize(WALLET_CRYPTO_SALT_SIZE); + RAND_bytes(&kMasterKey.vchSalt[0], WALLET_CRYPTO_SALT_SIZE); + + CCrypter crypter; + int64 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; + + printf("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; + + mapMasterKeys[++nMasterKeyMaxID] = kMasterKey; + if (fFileBacked) + { + pwalletdbEncryption = new CWalletDB(strWalletFile); + pwalletdbEncryption->TxnBegin(); + 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. + } + + if (fFileBacked) + { + CCorruptAddress corruptAddress; + pwalletdbEncryption->WriteSetting("addrIncoming", corruptAddress); + 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. + + pwalletdbEncryption->Close(); + pwalletdbEncryption = NULL; + } + + Lock(); + } + return true; } void CWallet::WalletUpdateSpent(const CTransaction &tx) @@ -98,7 +269,10 @@ bool CWallet::AddToWallet(const CWalletTx& wtxIn) BOOST_FOREACH(const CTxOut& txout, wtx.vout) { if (txout.scriptPubKey == scriptDefaultKey) - SetDefaultKey(GetKeyFromKeyPool()); + { + SetDefaultKey(GetOrReuseKeyFromPool()); + SetAddressBookName(PubKeyToAddress(vchDefaultKey), ""); + } } #endif // Notify UI @@ -552,8 +726,6 @@ void CWallet::ResendWalletTransactions() int64 CWallet::GetBalance() const { - int64 nStart = GetTimeMillis(); - int64 nTotal = 0; CRITICAL_BLOCK(cs_mapWallet) { @@ -566,7 +738,6 @@ int64 CWallet::GetBalance() const } } - //printf("GetBalance() %"PRI64d"ms\n", GetTimeMillis() - nStart); return nTotal; } @@ -798,7 +969,7 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64> >& vecSend, CW // Reserve a new key pair from key pool vector<unsigned char> vchPubKey = reservekey.GetReservedKey(); - assert(mapKeys.count(vchPubKey)); + // assert(mapKeys.count(vchPubKey)); // Fill a vout to ourself, using same address type as the payment CScript scriptChange; @@ -918,15 +1089,24 @@ string CWallet::SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, { CReserveKey reservekey(this); int64 nFeeRequired; - if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired)) + CRITICAL_BLOCK(cs_vMasterKey) { - string strError; - if (nValue + nFeeRequired > GetBalance()) - strError = strprintf(_("Error: This transaction requires a transaction fee of at least %s because of its amount, complexity, or use of recently received funds "), FormatMoney(nFeeRequired).c_str()); - else - strError = _("Error: Transaction creation failed "); - printf("SendMoney() : %s", strError.c_str()); - return strError; + if (IsLocked()) + { + string strError = _("Error: Wallet locked, unable to create transaction "); + printf("SendMoney() : %s", strError.c_str()); + return strError; + } + if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired)) + { + string strError; + if (nValue + nFeeRequired > GetBalance()) + strError = strprintf(_("Error: This transaction requires a transaction fee of at least %s because of its amount, complexity, or use of recently received funds "), FormatMoney(nFeeRequired).c_str()); + else + strError = _("Error: Transaction creation failed "); + printf("SendMoney() : %s", strError.c_str()); + return strError; + } } if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL)) @@ -961,27 +1141,28 @@ string CWallet::SendMoneyToBitcoinAddress(string strAddress, int64 nValue, CWall -bool CWallet::LoadWallet(bool& fFirstRunRet) +int CWallet::LoadWallet(bool& fFirstRunRet) { if (!fFileBacked) return false; fFirstRunRet = false; - if (!CWalletDB(strWalletFile,"cr+").LoadWallet(this)) - return false; + int nLoadWalletRet = CWalletDB(strWalletFile,"cr+").LoadWallet(this); + if (nLoadWalletRet != DB_LOAD_OK) + return nLoadWalletRet; fFirstRunRet = vchDefaultKey.empty(); - if (!mapKeys.count(vchDefaultKey)) + if (!HaveKey(vchDefaultKey)) { - // Create new default key + // Create new keyUser and set as default key RandAddSeedPerfmon(); - SetDefaultKey(GetKeyFromKeyPool()); + SetDefaultKey(GetOrReuseKeyFromPool()); if (!SetAddressBookName(PubKeyToAddress(vchDefaultKey), "")) - return false; + return DB_LOAD_FAIL; } CreateThread(ThreadFlushWalletDB, &strWalletFile); - return true; + return DB_LOAD_OK; } @@ -1048,14 +1229,16 @@ bool GetWalletFile(CWallet* pwallet, string &strWalletFileOut) return true; } -void CWallet::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool) +bool CWallet::TopUpKeyPool() { - nIndex = -1; - keypool.vchPubKey.clear(); CRITICAL_BLOCK(cs_main) CRITICAL_BLOCK(cs_mapWallet) CRITICAL_BLOCK(cs_setKeyPool) + CRITICAL_BLOCK(cs_vMasterKey) { + if (IsLocked()) + return false; + CWalletDB walletdb(strWalletFile); // Top up key pool @@ -1066,18 +1249,36 @@ void CWallet::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool) if (!setKeyPool.empty()) nEnd = *(--setKeyPool.end()) + 1; if (!walletdb.WritePool(nEnd, CKeyPool(GenerateNewKey()))) - throw runtime_error("ReserveKeyFromKeyPool() : writing generated key failed"); + throw runtime_error("TopUpKeyPool() : writing generated key failed"); setKeyPool.insert(nEnd); printf("keypool added key %"PRI64d", size=%d\n", nEnd, setKeyPool.size()); } + } + return true; +} + +void CWallet::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool) +{ + nIndex = -1; + keypool.vchPubKey.clear(); + CRITICAL_BLOCK(cs_main) + CRITICAL_BLOCK(cs_mapWallet) + CRITICAL_BLOCK(cs_setKeyPool) + { + if (!IsLocked()) + TopUpKeyPool(); // Get the oldest key - assert(!setKeyPool.empty()); + if(setKeyPool.empty()) + return; + + CWalletDB walletdb(strWalletFile); + nIndex = *(setKeyPool.begin()); setKeyPool.erase(setKeyPool.begin()); if (!walletdb.ReadPool(nIndex, keypool)) throw runtime_error("ReserveKeyFromKeyPool() : read failed"); - if (!mapKeys.count(keypool.vchPubKey)) + if (!HaveKey(keypool.vchPubKey)) throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool"); assert(!keypool.vchPubKey.empty()); printf("keypool reserve %"PRI64d"\n", nIndex); @@ -1106,11 +1307,13 @@ void CWallet::ReturnKey(int64 nIndex) printf("keypool return %"PRI64d"\n", nIndex); } -vector<unsigned char> CWallet::GetKeyFromKeyPool() +vector<unsigned char> CWallet::GetOrReuseKeyFromPool() { int64 nIndex = 0; CKeyPool keypool; ReserveKeyFromKeyPool(nIndex, keypool); + if(nIndex == -1) + return vchDefaultKey; KeepKey(nIndex); return keypool.vchPubKey; } @@ -1120,6 +1323,8 @@ int64 CWallet::GetOldestKeyPoolTime() int64 nIndex = 0; CKeyPool keypool; ReserveKeyFromKeyPool(nIndex, keypool); + if (nIndex == -1) + return GetTime(); ReturnKey(nIndex); return keypool.nTime; } @@ -1130,7 +1335,13 @@ vector<unsigned char> CReserveKey::GetReservedKey() { CKeyPool keypool; pwallet->ReserveKeyFromKeyPool(nIndex, keypool); - vchPubKey = keypool.vchPubKey; + if (nIndex != -1) + vchPubKey = keypool.vchPubKey; + else + { + printf("CReserveKey::GetReservedKey(): Warning: using default key instead of a new key, top up your keypool."); + vchPubKey = pwallet->vchDefaultKey; + } } assert(!vchPubKey.empty()); return vchPubKey; |