1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2012 The Bitcoin developers
3 // Distributed under the MIT/X11 software license, see the accompanying
4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
10 #include "ui_interface.h"
13 #include "coincontrol.h"
14 #include <boost/algorithm/string/replace.hpp>
15 #include <openssl/bio.h>
20 extern int64_t nReserveBalance;
22 //////////////////////////////////////////////////////////////////////////////
27 struct CompareValueOnly
29 bool operator()(const pair<int64_t, pair<const CWalletTx*, unsigned int> >& t1,
30 const pair<int64_t, pair<const CWalletTx*, unsigned int> >& t2) const
32 return t1.first < t2.first;
36 const CWalletTx* CWallet::GetWalletTx(const uint256& hash) const
39 std::map<uint256, CWalletTx>::const_iterator it = mapWallet.find(hash);
40 if (it == mapWallet.end())
45 CPubKey CWallet::GenerateNewKey()
47 bool fCompressed = CanSupportFeature(FEATURE_COMPRPUBKEY); // default to compressed public keys if we want 0.6.0 wallets
51 key.MakeNewKey(fCompressed);
53 // Compressed public keys were introduced in version 0.6.0
55 SetMinVersion(FEATURE_COMPRPUBKEY);
57 CPubKey pubkey = key.GetPubKey();
59 // Create new metadata
60 int64_t nCreationTime = GetTime();
61 mapKeyMetadata[CBitcoinAddress(pubkey.GetID())] = CKeyMetadata(nCreationTime);
62 if (!nTimeFirstKey || nCreationTime < nTimeFirstKey)
63 nTimeFirstKey = nCreationTime;
66 throw std::runtime_error("CWallet::GenerateNewKey() : AddKey failed");
67 return key.GetPubKey();
70 CMalleableKeyView CWallet::GenerateNewMalleableKey()
74 // Compressed public keys were introduced in version 0.6.0
75 SetMinVersion(FEATURE_MALLKEY);
79 const CMalleableKeyView &keyView(mKey);
81 // Create new metadata
82 int64_t nCreationTime = GetTime();
83 mapKeyMetadata[CBitcoinAddress(keyView.GetMalleablePubKey())] = CKeyMetadata(nCreationTime);
84 if (!nTimeFirstKey || nCreationTime < nTimeFirstKey)
85 nTimeFirstKey = nCreationTime;
88 throw std::runtime_error("CWallet::GenerateNewMalleableKey() : AddKey failed");
89 return CMalleableKeyView(mKey);
92 bool CWallet::AddKey(const CKey& key)
94 CPubKey pubkey = key.GetPubKey();
95 if (!CCryptoKeyStore::AddKey(key))
100 return CWalletDB(strWalletFile).WriteKey(pubkey, key.GetPrivKey(), mapKeyMetadata[CBitcoinAddress(pubkey.GetID())]);
104 bool CWallet::AddKey(const CMalleableKey& mKey)
106 CMalleableKeyView keyView = CMalleableKeyView(mKey);
107 CSecret vchSecretH = mKey.GetSecretH();
108 if (!CCryptoKeyStore::AddMalleableKey(keyView, vchSecretH))
113 return CWalletDB(strWalletFile).WriteMalleableKey(keyView, vchSecretH, mapKeyMetadata[CBitcoinAddress(keyView.GetMalleablePubKey())]);
117 bool CWallet::AddCryptedMalleableKey(const CMalleableKeyView& keyView, const std::vector<unsigned char> &vchCryptedSecretH)
119 if (!CCryptoKeyStore::AddCryptedMalleableKey(keyView, vchCryptedSecretH))
127 CBitcoinAddress addr(keyView.GetMalleablePubKey());
128 if (pwalletdbEncryption)
129 return pwalletdbEncryption->WriteCryptedMalleableKey(keyView, vchCryptedSecretH, mapKeyMetadata[addr]);
131 return CWalletDB(strWalletFile).WriteCryptedMalleableKey(keyView, vchCryptedSecretH, mapKeyMetadata[addr]);
137 bool CWallet::AddCryptedKey(const CPubKey &vchPubKey, const vector<unsigned char> &vchCryptedSecret)
139 if (!CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret))
142 // check if we need to remove from watch-only
144 script.SetDestination(vchPubKey.GetID());
145 if (HaveWatchOnly(script))
146 RemoveWatchOnly(script);
152 CBitcoinAddress addr(vchPubKey.GetID());
153 if (pwalletdbEncryption)
154 return pwalletdbEncryption->WriteCryptedKey(vchPubKey, vchCryptedSecret, mapKeyMetadata[addr]);
156 return CWalletDB(strWalletFile).WriteCryptedKey(vchPubKey, vchCryptedSecret, mapKeyMetadata[addr]);
161 bool CWallet::LoadKeyMetadata(const CPubKey &pubkey, const CKeyMetadata &meta)
163 if (meta.nCreateTime && (!nTimeFirstKey || meta.nCreateTime < nTimeFirstKey))
164 nTimeFirstKey = meta.nCreateTime;
166 mapKeyMetadata[CBitcoinAddress(pubkey.GetID())] = meta;
170 bool CWallet::LoadKeyMetadata(const CMalleableKeyView &keyView, const CKeyMetadata &metadata)
172 if (metadata.nCreateTime && (!nTimeFirstKey || metadata.nCreateTime < nTimeFirstKey))
173 nTimeFirstKey = metadata.nCreateTime;
175 mapKeyMetadata[CBitcoinAddress(keyView.GetMalleablePubKey())] = metadata;
179 bool CWallet::AddCScript(const CScript& redeemScript)
181 if (!CCryptoKeyStore::AddCScript(redeemScript))
185 return CWalletDB(strWalletFile).WriteCScript(Hash160(redeemScript), redeemScript);
188 bool CWallet::LoadCScript(const CScript& redeemScript)
190 /* A sanity check was added in commit 5ed0a2b to avoid adding redeemScripts
191 * that never can be redeemed. However, old wallets may still contain
192 * these. Do not add them to the wallet and warn. */
193 if (redeemScript.size() > MAX_SCRIPT_ELEMENT_SIZE)
195 std::string strAddr = CBitcoinAddress(redeemScript.GetID()).ToString();
196 printf("LoadCScript() : Warning: This wallet contains a redeemScript of size %" PRIszu " which exceeds maximum size %i thus can never be redeemed. Do not use address %s.\n",
197 redeemScript.size(), MAX_SCRIPT_ELEMENT_SIZE, strAddr.c_str());
201 return CCryptoKeyStore::AddCScript(redeemScript);
205 bool CWallet::AddWatchOnly(const CScript &dest)
207 if (!CCryptoKeyStore::AddWatchOnly(dest))
209 nTimeFirstKey = 1; // No birthday information for watch-only keys.
210 NotifyWatchonlyChanged(true);
213 return CWalletDB(strWalletFile).WriteWatchOnly(dest);
216 bool CWallet::RemoveWatchOnly(const CScript &dest)
219 if (!CCryptoKeyStore::RemoveWatchOnly(dest))
221 if (!HaveWatchOnly())
222 NotifyWatchonlyChanged(false);
224 if (!CWalletDB(strWalletFile).EraseWatchOnly(dest))
230 bool CWallet::LoadWatchOnly(const CScript &dest)
232 return CCryptoKeyStore::AddWatchOnly(dest);
235 // ppcoin: optional setting to unlock wallet for block minting only;
236 // serves to disable the trivial sendmoney when OS account compromised
237 bool fWalletUnlockMintOnly = false;
239 bool CWallet::Unlock(const SecureString& strWalletPassphrase)
245 CKeyingMaterial vMasterKey;
249 BOOST_FOREACH(const MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
251 if(!crypter.SetKeyFromPassphrase(strWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
253 if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
255 if (CCryptoKeyStore::Unlock(vMasterKey))
262 bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase)
264 bool fWasLocked = IsLocked();
271 CKeyingMaterial vMasterKey;
272 BOOST_FOREACH(MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
274 if(!crypter.SetKeyFromPassphrase(strOldWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
276 if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
278 if (CCryptoKeyStore::Unlock(vMasterKey))
280 int64_t nStartTime = GetTimeMillis();
281 crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
282 double nFirstMultiplier = 1e2 / (GetTimeMillis() - nStartTime);
283 pMasterKey.second.nDeriveIterations = (uint32_t)(pMasterKey.second.nDeriveIterations *nFirstMultiplier);
285 nStartTime = GetTimeMillis();
286 crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
287 double nSecondMultiplier = 1e2 / (GetTimeMillis() - nStartTime);
288 pMasterKey.second.nDeriveIterations = (uint32_t)((pMasterKey.second.nDeriveIterations + pMasterKey.second.nDeriveIterations * nSecondMultiplier) / 2);
290 if (pMasterKey.second.nDeriveIterations < 25000)
291 pMasterKey.second.nDeriveIterations = 25000;
293 printf("Wallet passphrase changed to an nDeriveIterations of %i\n", pMasterKey.second.nDeriveIterations);
295 if (!crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
297 if (!crypter.Encrypt(vMasterKey, pMasterKey.second.vchCryptedKey))
299 CWalletDB(strWalletFile).WriteMasterKey(pMasterKey.first, pMasterKey.second);
310 void CWallet::SetBestChain(const CBlockLocator& loc)
312 CWalletDB walletdb(strWalletFile);
313 walletdb.WriteBestBlock(loc);
316 // This class implements an addrIncoming entry that causes pre-0.4
317 // clients to crash on startup if reading a private-key-encrypted wallet.
318 class CCorruptAddress
323 if (nType & SER_DISK)
328 bool CWallet::SetMinVersion(enum WalletFeature nVersion, CWalletDB* pwalletdbIn, bool fExplicit)
330 if (nWalletVersion >= nVersion)
333 // when doing an explicit upgrade, if we pass the max version permitted, upgrade all the way
334 if (fExplicit && nVersion > nWalletMaxVersion)
335 nVersion = FEATURE_LATEST;
337 nWalletVersion = nVersion;
339 if (nVersion > nWalletMaxVersion)
340 nWalletMaxVersion = nVersion;
344 CWalletDB* pwalletdb = pwalletdbIn ? pwalletdbIn : new CWalletDB(strWalletFile);
345 if (nWalletVersion > 40000)
346 pwalletdb->WriteMinVersion(nWalletVersion);
354 bool CWallet::SetMaxVersion(int nVersion)
356 // cannot downgrade below current version
357 if (nWalletVersion > nVersion)
360 nWalletMaxVersion = nVersion;
365 bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
370 CKeyingMaterial vMasterKey;
371 RandAddSeedPerfmon();
373 vMasterKey.resize(WALLET_CRYPTO_KEY_SIZE);
374 RAND_bytes(&vMasterKey[0], WALLET_CRYPTO_KEY_SIZE);
376 CMasterKey kMasterKey;
378 RandAddSeedPerfmon();
379 kMasterKey.vchSalt.resize(WALLET_CRYPTO_SALT_SIZE);
380 RAND_bytes(&kMasterKey.vchSalt[0], WALLET_CRYPTO_SALT_SIZE);
383 int64_t nStartTime = GetTimeMillis();
384 crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, 25000, kMasterKey.nDerivationMethod);
385 int64_t nDivider = GetTimeMillis() - nStartTime;
386 kMasterKey.nDeriveIterations = (uint32_t)(25e5 / (double)(nDivider));
388 nStartTime = GetTimeMillis();
389 crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod);
390 double nMultiplier = 1e2 / (GetTimeMillis() - nStartTime);
391 kMasterKey.nDeriveIterations = (uint32_t)((kMasterKey.nDeriveIterations + kMasterKey.nDeriveIterations * nMultiplier) / 2);
393 if (kMasterKey.nDeriveIterations < 25000)
394 kMasterKey.nDeriveIterations = 25000;
396 printf("Encrypting Wallet with an nDeriveIterations of %i\n", kMasterKey.nDeriveIterations);
398 if (!crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod))
400 if (!crypter.Encrypt(vMasterKey, kMasterKey.vchCryptedKey))
405 mapMasterKeys[++nMasterKeyMaxID] = kMasterKey;
408 pwalletdbEncryption = new CWalletDB(strWalletFile);
409 if (!pwalletdbEncryption->TxnBegin())
411 pwalletdbEncryption->WriteMasterKey(nMasterKeyMaxID, kMasterKey);
414 if (!EncryptKeys(vMasterKey))
417 pwalletdbEncryption->TxnAbort();
418 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.
421 // Encryption was introduced in version 0.4.0
422 SetMinVersion(FEATURE_WALLETCRYPT, pwalletdbEncryption, true);
426 if (!pwalletdbEncryption->TxnCommit())
427 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.
429 delete pwalletdbEncryption;
430 pwalletdbEncryption = NULL;
434 Unlock(strWalletPassphrase);
438 // Need to completely rewrite the wallet file; if we don't, bdb might keep
439 // bits of the unencrypted private key in slack space in the database file.
440 CDB::Rewrite(strWalletFile);
443 NotifyStatusChanged(this);
448 bool CWallet::DecryptWallet(const SecureString& strWalletPassphrase)
454 CKeyingMaterial vMasterKey;
458 BOOST_FOREACH(const MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
460 if(!crypter.SetKeyFromPassphrase(strWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
462 if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
464 if (!CCryptoKeyStore::Unlock(vMasterKey))
470 pwalletdbDecryption = new CWalletDB(strWalletFile);
471 if (!pwalletdbDecryption->TxnBegin())
475 if (!DecryptKeys(vMasterKey))
478 pwalletdbDecryption->TxnAbort();
479 exit(1); //We now probably have half of our keys decrypted in memory, and half not...die and let the user reload their encrypted wallet.
484 // Overwrite crypted keys
485 KeyMap::const_iterator mi = mapKeys.begin();
486 while (mi != mapKeys.end())
489 key.SetSecret((*mi).second.first, (*mi).second.second);
490 pwalletdbDecryption->EraseCryptedKey(key.GetPubKey());
491 pwalletdbDecryption->WriteKey(key.GetPubKey(), key.GetPrivKey(), mapKeyMetadata[CBitcoinAddress(mi->first)]);
495 MalleableKeyMap::const_iterator mi2 = mapMalleableKeys.begin();
496 while (mi2 != mapMalleableKeys.end())
498 const CSecret &vchSecretH = mi2->second;
499 const CMalleableKeyView &keyView = mi2->first;
500 pwalletdbDecryption->EraseCryptedMalleableKey(keyView);
501 pwalletdbDecryption->WriteMalleableKey(keyView, vchSecretH, mapKeyMetadata[CBitcoinAddress(keyView.GetMalleablePubKey())]);
506 MasterKeyMap::const_iterator mk = mapMasterKeys.begin();
507 while (mk != mapMasterKeys.end())
509 pwalletdbDecryption->EraseMasterKey((*mk).first);
513 if (!pwalletdbDecryption->TxnCommit())
514 exit(1); //We now have keys decrypted in memory, but no on disk...die to avoid confusion and let the user reload their encrypted wallet.
516 delete pwalletdbDecryption;
517 pwalletdbDecryption = NULL;
520 // Need to completely rewrite the wallet file; if we don't, bdb might keep
521 // encrypted private keys in the database file which can be a reason of consistency issues.
522 CDB::Rewrite(strWalletFile);
524 NotifyStatusChanged(this);
529 bool CWallet::GetPEM(const CKeyID &keyID, const std::string &fileName, const SecureString &strPassKey) const
531 BIO *pemOut = BIO_new_file(fileName.c_str(), "w");
533 return error("GetPEM() : failed to create file %s\n", fileName.c_str());
535 if (!GetKey(keyID, key))
536 return error("GetPEM() : failed to get key for address=%s\n", CBitcoinAddress(keyID).ToString().c_str());
537 bool result = key.WritePEM(pemOut, strPassKey);
542 int64_t CWallet::IncOrderPosNext(CWalletDB *pwalletdb)
544 int64_t nRet = nOrderPosNext++;
546 pwalletdb->WriteOrderPosNext(nOrderPosNext);
548 CWalletDB(strWalletFile).WriteOrderPosNext(nOrderPosNext);
553 CWallet::TxItems CWallet::OrderedTxItems(std::list<CAccountingEntry>& acentries, std::string strAccount)
555 CWalletDB walletdb(strWalletFile);
557 // First: get all CWalletTx and CAccountingEntry into a sorted-by-order multimap.
560 // Note: maintaining indices in the database of (account,time) --> txid and (account, time) --> acentry
561 // would make this much faster for applications that do this a lot.
562 for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
564 CWalletTx* wtx = &((*it).second);
565 txOrdered.insert(make_pair(wtx->nOrderPos, TxPair(wtx, (CAccountingEntry*)0)));
568 walletdb.ListAccountCreditDebit(strAccount, acentries);
569 BOOST_FOREACH(CAccountingEntry& entry, acentries)
571 txOrdered.insert(make_pair(entry.nOrderPos, TxPair((CWalletTx*)0, &entry)));
577 void CWallet::WalletUpdateSpent(const CTransaction &tx, bool fBlock)
579 // Anytime a signature is successfully verified, it's proof the outpoint is spent.
580 // Update the wallet spent flag if it doesn't know due to wallet.dat being
581 // restored from backup or the user making copies of wallet.dat.
584 BOOST_FOREACH(const CTxIn& txin, tx.vin)
586 map<uint256, CWalletTx>::iterator mi = mapWallet.find(txin.prevout.hash);
587 if (mi != mapWallet.end())
589 CWalletTx& wtx = (*mi).second;
590 if (txin.prevout.n >= wtx.vout.size())
591 printf("WalletUpdateSpent: bad wtx %s\n", wtx.GetHash().ToString().c_str());
592 else if (!wtx.IsSpent(txin.prevout.n) && IsMine(wtx.vout[txin.prevout.n]))
594 printf("WalletUpdateSpent found spent coin %snvc %s\n", FormatMoney(wtx.GetCredit(MINE_ALL)).c_str(), wtx.GetHash().ToString().c_str());
595 wtx.MarkSpent(txin.prevout.n);
597 NotifyTransactionChanged(this, txin.prevout.hash, CT_UPDATED);
598 vMintingWalletUpdated.push_back(txin.prevout.hash);
605 uint256 hash = tx.GetHash();
606 map<uint256, CWalletTx>::iterator mi = mapWallet.find(hash);
607 CWalletTx& wtx = (*mi).second;
609 BOOST_FOREACH(const CTxOut& txout, tx.vout)
613 wtx.MarkUnspent(&txout - &tx.vout[0]);
615 NotifyTransactionChanged(this, hash, CT_UPDATED);
616 vMintingWalletUpdated.push_back(hash);
624 void CWallet::MarkDirty()
628 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
629 item.second.MarkDirty();
633 bool CWallet::AddToWallet(const CWalletTx& wtxIn)
635 uint256 hash = wtxIn.GetHash();
638 // Inserts only if not already there, returns tx inserted or tx found
639 pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
640 CWalletTx& wtx = (*ret.first).second;
641 wtx.BindWallet(this);
642 bool fInsertedNew = ret.second;
645 wtx.nTimeReceived = GetAdjustedTime();
646 wtx.nOrderPos = IncOrderPosNext();
648 wtx.nTimeSmart = wtx.nTimeReceived;
649 if (wtxIn.hashBlock != 0)
651 if (mapBlockIndex.count(wtxIn.hashBlock))
653 unsigned int latestNow = wtx.nTimeReceived;
654 unsigned int latestEntry = 0;
656 // Tolerate times up to the last timestamp in the wallet not more than 5 minutes into the future
657 int64_t latestTolerated = latestNow + 300;
658 std::list<CAccountingEntry> acentries;
659 TxItems txOrdered = OrderedTxItems(acentries);
660 for (TxItems::reverse_iterator it = txOrdered.rbegin(); it != txOrdered.rend(); ++it)
662 CWalletTx *const pwtx = (*it).second.first;
665 CAccountingEntry *const pacentry = (*it).second.second;
669 nSmartTime = pwtx->nTimeSmart;
671 nSmartTime = pwtx->nTimeReceived;
674 nSmartTime = pacentry->nTime;
675 if (nSmartTime <= latestTolerated)
677 latestEntry = nSmartTime;
678 if (nSmartTime > latestNow)
679 latestNow = nSmartTime;
685 unsigned int& blocktime = mapBlockIndex[wtxIn.hashBlock]->nTime;
686 wtx.nTimeSmart = std::max(latestEntry, std::min(blocktime, latestNow));
689 printf("AddToWallet() : found %s in block %s not in index\n",
690 wtxIn.GetHash().ToString().substr(0,10).c_str(),
691 wtxIn.hashBlock.ToString().c_str());
695 bool fUpdated = false;
699 if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
701 wtx.hashBlock = wtxIn.hashBlock;
704 if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
706 wtx.vMerkleBranch = wtxIn.vMerkleBranch;
707 wtx.nIndex = wtxIn.nIndex;
710 if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
712 wtx.fFromMe = wtxIn.fFromMe;
715 fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
719 printf("AddToWallet %s %s%s\n", wtxIn.GetHash().ToString().substr(0,10).c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
722 if (fInsertedNew || fUpdated)
723 if (!wtx.WriteToDisk())
726 // If default receiving address gets used, replace it with a new one
727 CScript scriptDefaultKey;
728 scriptDefaultKey.SetDestination(vchDefaultKey.GetID());
729 BOOST_FOREACH(const CTxOut& txout, wtx.vout)
731 if (txout.scriptPubKey == scriptDefaultKey)
733 CPubKey newDefaultKey;
734 if (GetKeyFromPool(newDefaultKey, false))
736 SetDefaultKey(newDefaultKey);
737 SetAddressBookName(vchDefaultKey.GetID(), "");
742 // since AddToWallet is called directly for self-originating transactions, check for consumption of own coins
743 WalletUpdateSpent(wtx, (wtxIn.hashBlock != 0));
745 // Notify UI of new or updated transaction
746 NotifyTransactionChanged(this, hash, fInsertedNew ? CT_NEW : CT_UPDATED);
747 vMintingWalletUpdated.push_back(hash);
748 // notify an external script when a wallet transaction comes in or is updated
749 std::string strCmd = GetArg("-walletnotify", "");
751 if ( !strCmd.empty())
753 boost::replace_all(strCmd, "%s", wtxIn.GetHash().GetHex());
754 boost::thread t(runCommand, strCmd); // thread runs free
761 // Add a transaction to the wallet, or update it.
762 // pblock is optional, but should be provided if the transaction is known to be in a block.
763 // If fUpdate is true, existing transactions will be updated.
764 bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
766 uint256 hash = tx.GetHash();
769 bool fExisted = mapWallet.count(hash) != 0;
770 if (fExisted && !fUpdate) return false;
771 if (fExisted || IsMine(tx) || IsFromMe(tx))
773 CWalletTx wtx(this,tx);
774 // Get merkle branch if transaction was found in a block
776 wtx.SetMerkleBranch(*pblock);
777 return AddToWallet(wtx);
780 WalletUpdateSpent(tx);
785 bool CWallet::EraseFromWallet(uint256 hash)
791 if (mapWallet.erase(hash))
792 CWalletDB(strWalletFile).EraseTx(hash);
798 isminetype CWallet::IsMine(const CTxIn &txin) const
802 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
803 if (mi != mapWallet.end())
805 const CWalletTx& prev = (*mi).second;
806 if (txin.prevout.n < prev.vout.size())
807 return IsMine(prev.vout[txin.prevout.n]);
813 int64_t CWallet::GetDebit(const CTxIn &txin, const isminefilter& filter) const
817 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
818 if (mi != mapWallet.end())
820 const CWalletTx& prev = (*mi).second;
821 if (txin.prevout.n < prev.vout.size())
822 if (IsMine(prev.vout[txin.prevout.n]) & filter)
823 return prev.vout[txin.prevout.n].nValue;
829 isminetype CWallet::IsMine(const CTxOut& txout) const
831 return ::IsMine(*this, txout.scriptPubKey);
834 int64_t CWallet::GetCredit(const CTxOut& txout, const isminefilter& filter) const
836 if (!MoneyRange(txout.nValue))
837 throw std::runtime_error("CWallet::GetCredit() : value out of range");
838 return (IsMine(txout) & filter ? txout.nValue : 0);
841 bool CWallet::IsChange(const CTxOut& txout) const
843 // TODO: fix handling of 'change' outputs. The assumption is that any
844 // payment to a script that is ours, but isn't in the address book
845 // is change. That assumption is likely to break when we implement multisignature
846 // wallets that return change back into a multi-signature-protected address;
847 // a better way of identifying which outputs are 'the send' and which are
848 // 'the change' will need to be implemented (maybe extend CWalletTx to remember
849 // which output, if any, was change).
850 if (::IsMine(*this, txout.scriptPubKey))
852 CTxDestination address;
853 if (!ExtractDestination(txout.scriptPubKey, address))
857 if (!mapAddressBook.count(address))
863 int64_t CWallet::GetChange(const CTxOut& txout) const
865 if (!MoneyRange(txout.nValue))
866 throw std::runtime_error("CWallet::GetChange() : value out of range");
867 return (IsChange(txout) ? txout.nValue : 0);
870 bool CWallet::IsMine(const CTransaction& tx) const
872 BOOST_FOREACH(const CTxOut& txout, tx.vout)
873 if (IsMine(txout) && txout.nValue >= nMinimumInputValue)
878 bool CWallet::IsFromMe(const CTransaction& tx) const
880 return (GetDebit(tx, MINE_ALL) > 0);
883 int64_t CWallet::GetDebit(const CTransaction& tx, const isminefilter& filter) const
886 BOOST_FOREACH(const CTxIn& txin, tx.vin)
888 nDebit += GetDebit(txin, filter);
889 if (!MoneyRange(nDebit))
890 throw std::runtime_error("CWallet::GetDebit() : value out of range");
895 int64_t CWallet::GetCredit(const CTransaction& tx, const isminefilter& filter) const
898 BOOST_FOREACH(const CTxOut& txout, tx.vout)
900 nCredit += GetCredit(txout, filter);
901 if (!MoneyRange(nCredit))
902 throw std::runtime_error("CWallet::GetCredit() : value out of range");
907 int64_t CWallet::GetChange(const CTransaction& tx) const
910 BOOST_FOREACH(const CTxOut& txout, tx.vout)
912 nChange += GetChange(txout);
913 if (!MoneyRange(nChange))
914 throw std::runtime_error("CWallet::GetChange() : value out of range");
919 int64_t CWalletTx::GetTxTime() const
924 int CWalletTx::GetRequestCount() const
926 // Returns -1 if it wasn't being tracked
929 LOCK(pwallet->cs_wallet);
930 if (IsCoinBase() || IsCoinStake())
935 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
936 if (mi != pwallet->mapRequestCount.end())
937 nRequests = (*mi).second;
942 // Did anyone request this transaction?
943 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(GetHash());
944 if (mi != pwallet->mapRequestCount.end())
946 nRequests = (*mi).second;
948 // How about the block it's in?
949 if (nRequests == 0 && hashBlock != 0)
951 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
952 if (mi != pwallet->mapRequestCount.end())
953 nRequests = (*mi).second;
955 nRequests = 1; // If it's in someone else's block it must have got out
963 bool CWalletTx::InMempool() const
966 if (mempool.exists(GetHash())) {
972 bool CWalletTx::IsTrusted() const
974 // Quick answer in most cases
977 int nDepth = GetDepthInMainChain();
982 if (!fConfChange || !IsFromMe(MINE_ALL)) // using wtx's cached debit
985 // Don't trust unconfirmed transactions from us unless they are in the mempool.
989 // Trusted if all inputs are from us and are in the mempool:
990 BOOST_FOREACH(const CTxIn& txin, vin)
992 // Transactions not sent by us: not trusted
993 const CWalletTx* parent = pwallet->GetWalletTx(txin.prevout.hash);
996 const CTxOut& parentOut = parent->vout[txin.prevout.n];
997 if (pwallet->IsMine(parentOut) != MINE_SPENDABLE)
1003 int64_t CWalletTx::GetDebit(const isminefilter& filter) const
1009 if (filter & MINE_SPENDABLE)
1012 nDebit += nDebitCached;
1015 nDebitCached = pwallet->GetDebit(*this, MINE_SPENDABLE);
1016 fDebitCached = true;
1017 nDebit += nDebitCached;
1020 if (filter & MINE_WATCH_ONLY)
1022 if (fWatchDebitCached)
1023 nDebit += nWatchDebitCached;
1026 nWatchDebitCached = pwallet->GetDebit(*this, MINE_WATCH_ONLY);
1027 fWatchDebitCached = true;
1028 nDebit += nWatchDebitCached;
1034 int64_t CWalletTx::GetCredit(const isminefilter& filter) const
1036 // Must wait until coinbase is safely deep enough in the chain before valuing it
1037 if ((IsCoinBase() || IsCoinStake()) && GetBlocksToMaturity() > 0)
1041 if (filter & MINE_SPENDABLE)
1043 // GetBalance can assume transactions in mapWallet won't change
1045 credit += nCreditCached;
1048 nCreditCached = pwallet->GetCredit(*this, MINE_SPENDABLE);
1049 fCreditCached = true;
1050 credit += nCreditCached;
1053 if (filter & MINE_WATCH_ONLY)
1055 if (fWatchCreditCached)
1056 credit += nWatchCreditCached;
1059 nWatchCreditCached = pwallet->GetCredit(*this, MINE_WATCH_ONLY);
1060 fWatchCreditCached = true;
1061 credit += nWatchCreditCached;
1067 int64_t CWalletTx::GetImmatureCredit(bool fUseCache) const
1069 if (IsCoinBase() && GetBlocksToMaturity() > 0 && IsInMainChain())
1071 if (fUseCache && fImmatureCreditCached)
1072 return nImmatureCreditCached;
1073 nImmatureCreditCached = pwallet->GetCredit(*this, MINE_SPENDABLE);
1074 fImmatureCreditCached = true;
1075 return nImmatureCreditCached;
1081 int64_t CWalletTx::GetImmatureWatchOnlyCredit(bool fUseCache) const
1083 if (IsCoinBase() && GetBlocksToMaturity() > 0 && IsInMainChain())
1085 if (fUseCache && fImmatureWatchCreditCached)
1086 return nImmatureWatchCreditCached;
1087 nImmatureWatchCreditCached = pwallet->GetCredit(*this, MINE_WATCH_ONLY);
1088 fImmatureWatchCreditCached = true;
1089 return nImmatureWatchCreditCached;
1096 int64_t CWalletTx::GetAvailableCredit(bool fUseCache) const
1098 // Must wait until coinbase is safely deep enough in the chain before valuing it
1099 if ((IsCoinBase() || IsCoinStake()) && GetBlocksToMaturity() > 0)
1103 if (fAvailableCreditCached)
1104 return nAvailableCreditCached;
1107 int64_t nCredit = 0;
1108 for (unsigned int i = 0; i < vout.size(); i++)
1112 const CTxOut &txout = vout[i];
1113 nCredit += pwallet->GetCredit(txout, MINE_SPENDABLE);
1114 if (!MoneyRange(nCredit))
1115 throw std::runtime_error("CWalletTx::GetAvailableCredit() : value out of range");
1119 nAvailableCreditCached = nCredit;
1120 fAvailableCreditCached = true;
1125 int64_t CWalletTx::GetAvailableWatchCredit(bool fUseCache) const
1127 // Must wait until coinbase is safely deep enough in the chain before valuing it
1128 if ((IsCoinBase() || IsCoinStake()) && GetBlocksToMaturity() > 0)
1132 if (fAvailableWatchCreditCached)
1133 return nAvailableWatchCreditCached;
1136 int64_t nCredit = 0;
1137 for (unsigned int i = 0; i < vout.size(); i++)
1141 const CTxOut &txout = vout[i];
1142 nCredit += pwallet->GetCredit(txout, MINE_WATCH_ONLY);
1143 if (!MoneyRange(nCredit))
1144 throw std::runtime_error("CWalletTx::GetAvailableCredit() : value out of range");
1148 nAvailableWatchCreditCached = nCredit;
1149 fAvailableWatchCreditCached = true;
1154 int64_t CWalletTx::GetChange() const
1157 return nChangeCached;
1158 nChangeCached = pwallet->GetChange(*this);
1159 fChangeCached = true;
1160 return nChangeCached;
1163 void CWalletTx::GetAmounts(int64_t& nGeneratedImmature, int64_t& nGeneratedMature, list<pair<CBitcoinAddress, int64_t> >& listReceived,
1164 list<pair<CBitcoinAddress, int64_t> >& listSent, int64_t& nFee, string& strSentAccount, const isminefilter& filter) const
1166 nGeneratedImmature = nGeneratedMature = nFee = 0;
1167 listReceived.clear();
1169 strSentAccount = strFromAccount;
1171 if (IsCoinBase() || IsCoinStake())
1173 if (GetBlocksToMaturity() > 0)
1174 nGeneratedImmature = pwallet->GetCredit(*this, filter);
1176 nGeneratedMature = GetCredit(filter);
1181 int64_t nDebit = GetDebit(filter);
1182 if (nDebit > 0) // debit>0 means we signed/sent this transaction
1184 int64_t nValueOut = GetValueOut();
1185 nFee = nDebit - nValueOut;
1189 BOOST_FOREACH(const CTxOut& txout, vout)
1191 isminetype fIsMine = pwallet->IsMine(txout);
1192 // Only need to handle txouts if AT LEAST one of these is true:
1193 // 1) they debit from us (sent)
1194 // 2) the output is to us (received)
1197 // Don't report 'change' txouts
1198 if (pwallet->IsChange(txout))
1201 else if (!(fIsMine & filter))
1204 // In either case, we need to get the destination address
1205 CBitcoinAddress address;
1206 if (!ExtractAddress(*pwallet, txout.scriptPubKey, address))
1208 printf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
1209 this->GetHash().ToString().c_str());
1210 address = CBitcoinAddress();
1213 // If we are debited by the transaction, add the output as a "sent" entry
1215 listSent.push_back(make_pair(address, txout.nValue));
1217 // If we are receiving the output, add it as a "received" entry
1218 if (fIsMine & filter)
1219 listReceived.push_back(make_pair(address, txout.nValue));
1224 void CWalletTx::GetAccountAmounts(const string& strAccount, int64_t& nGenerated, int64_t& nReceived,
1225 int64_t& nSent, int64_t& nFee, const isminefilter& filter) const
1227 nGenerated = nReceived = nSent = nFee = 0;
1229 int64_t allGeneratedImmature, allGeneratedMature, allFee;
1230 allGeneratedImmature = allGeneratedMature = allFee = 0;
1231 string strSentAccount;
1232 list<pair<CBitcoinAddress, int64_t> > listReceived;
1233 list<pair<CBitcoinAddress, int64_t> > listSent;
1234 GetAmounts(allGeneratedImmature, allGeneratedMature, listReceived, listSent, allFee, strSentAccount, filter);
1236 if (strAccount.empty())
1237 nGenerated = allGeneratedMature;
1238 if (strAccount == strSentAccount)
1240 BOOST_FOREACH(const PAIRTYPE(CBitcoinAddress,int64_t)& s, listSent)
1245 LOCK(pwallet->cs_wallet);
1246 BOOST_FOREACH(const PAIRTYPE(CBitcoinAddress,int64_t)& r, listReceived)
1248 if (pwallet->mapAddressBook.count(r.first))
1250 map<CBitcoinAddress, string>::const_iterator mi = pwallet->mapAddressBook.find(r.first);
1251 if (mi != pwallet->mapAddressBook.end() && (*mi).second == strAccount)
1252 nReceived += r.second;
1254 else if (strAccount.empty())
1256 nReceived += r.second;
1262 void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
1266 const int COPY_DEPTH = 3;
1267 if (SetMerkleBranch() < COPY_DEPTH)
1269 vector<uint256> vWorkQueue;
1270 BOOST_FOREACH(const CTxIn& txin, vin)
1271 vWorkQueue.push_back(txin.prevout.hash);
1273 // This critsect is OK because txdb is already open
1275 LOCK(pwallet->cs_wallet);
1276 map<uint256, const CMerkleTx*> mapWalletPrev;
1277 set<uint256> setAlreadyDone;
1278 for (unsigned int i = 0; i < vWorkQueue.size(); i++)
1280 uint256 hash = vWorkQueue[i];
1281 if (setAlreadyDone.count(hash))
1283 setAlreadyDone.insert(hash);
1286 map<uint256, CWalletTx>::const_iterator mi = pwallet->mapWallet.find(hash);
1287 if (mi != pwallet->mapWallet.end())
1290 BOOST_FOREACH(const CMerkleTx& txWalletPrev, (*mi).second.vtxPrev)
1291 mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
1293 else if (mapWalletPrev.count(hash))
1295 tx = *mapWalletPrev[hash];
1297 else if (!fClient && txdb.ReadDiskTx(hash, tx))
1303 printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
1307 int nDepth = tx.SetMerkleBranch();
1308 vtxPrev.push_back(tx);
1310 if (nDepth < COPY_DEPTH)
1312 BOOST_FOREACH(const CTxIn& txin, tx.vin)
1313 vWorkQueue.push_back(txin.prevout.hash);
1319 reverse(vtxPrev.begin(), vtxPrev.end());
1322 bool CWalletTx::WriteToDisk()
1324 return CWalletDB(pwallet->strWalletFile).WriteTx(GetHash(), *this);
1327 // Scan the block chain (starting in pindexStart) for transactions
1328 // from or to us. If fUpdate is true, found transactions that already
1329 // exist in the wallet will be updated.
1330 int CWallet::ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
1334 CBlockIndex* pindex = pindexStart;
1340 block.ReadFromDisk(pindex, true);
1341 BOOST_FOREACH(CTransaction& tx, block.vtx)
1343 if (AddToWalletIfInvolvingMe(tx, &block, fUpdate))
1346 pindex = pindex->pnext;
1352 int CWallet::ScanForWalletTransaction(const uint256& hashTx)
1355 tx.ReadFromDisk(COutPoint(hashTx, 0));
1356 if (AddToWalletIfInvolvingMe(tx, NULL, true))
1361 void CWallet::ReacceptWalletTransactions()
1364 bool fRepeat = true;
1369 vector<CDiskTxPos> vMissingTx;
1370 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
1372 CWalletTx& wtx = item.second;
1373 if ((wtx.IsCoinBase() && wtx.IsSpent(0)) || (wtx.IsCoinStake() && wtx.IsSpent(1)))
1377 bool fUpdated = false;
1378 if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
1380 // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
1381 if (txindex.vSpent.size() != wtx.vout.size())
1383 printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %" PRIszu " != wtx.vout.size() %" PRIszu "\n", txindex.vSpent.size(), wtx.vout.size());
1386 for (unsigned int i = 0; i < txindex.vSpent.size(); i++)
1390 if (!txindex.vSpent[i].IsNull() && IsMine(wtx.vout[i]))
1394 vMissingTx.push_back(txindex.vSpent[i]);
1399 printf("ReacceptWalletTransactions found spent coin %snvc %s\n", FormatMoney(wtx.GetCredit(MINE_ALL)).c_str(), wtx.GetHash().ToString().c_str());
1406 // Re-accept any txes of ours that aren't already in a block
1407 if (!(wtx.IsCoinBase() || wtx.IsCoinStake()))
1408 wtx.AcceptWalletTransaction(txdb, false);
1411 if (!vMissingTx.empty())
1413 // TODO: optimize this to scan just part of the block chain?
1414 if (ScanForWalletTransactions(pindexGenesisBlock))
1415 fRepeat = true; // Found missing transactions: re-do re-accept.
1420 void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
1422 BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
1424 if (!(tx.IsCoinBase() || tx.IsCoinStake()))
1426 uint256 hash = tx.GetHash();
1427 if (!txdb.ContainsTx(hash))
1428 RelayTransaction((CTransaction)tx, hash);
1431 if (!(IsCoinBase() || IsCoinStake()))
1433 uint256 hash = GetHash();
1434 if (!txdb.ContainsTx(hash))
1436 printf("Relaying wtx %s\n", hash.ToString().substr(0,10).c_str());
1437 RelayTransaction((CTransaction)*this, hash);
1442 void CWalletTx::RelayWalletTransaction()
1445 RelayWalletTransaction(txdb);
1448 void CWallet::ResendWalletTransactions(bool fForceResend)
1450 if (!fForceResend) {
1451 // Do this infrequently and randomly to avoid giving away
1452 // that these are our transactions.
1453 static int64_t nNextTime = GetRand(GetTime() + 30 * 60);
1454 if (GetTime() < nNextTime)
1456 bool fFirst = (nNextTime == 0);
1457 nNextTime = GetTime() + GetRand(30 * 60);
1461 // Only do it if there's been a new block since last time
1462 static int64_t nLastTime = 0;
1463 if (nTimeBestReceived < nLastTime)
1465 nLastTime = GetTime();
1468 // Rebroadcast any of our txes that aren't in a block yet
1469 printf("ResendWalletTransactions()\n");
1473 // Sort them in chronological order
1474 multimap<unsigned int, CWalletTx*> mapSorted;
1475 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
1477 CWalletTx& wtx = item.second;
1478 // Don't rebroadcast until it's had plenty of time that
1479 // it should have gotten in already by now.
1480 if (fForceResend || nTimeBestReceived - (int64_t)wtx.nTimeReceived > 5 * 60)
1481 mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
1483 BOOST_FOREACH(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
1485 CWalletTx& wtx = *item.second;
1486 if (wtx.CheckTransaction())
1487 wtx.RelayWalletTransaction(txdb);
1489 printf("ResendWalletTransactions() : CheckTransaction failed for transaction %s\n", wtx.GetHash().ToString().c_str());
1499 //////////////////////////////////////////////////////////////////////////////
1505 int64_t CWallet::GetBalance() const
1510 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1512 const CWalletTx* pcoin = &(*it).second;
1513 if (pcoin->IsTrusted())
1514 nTotal += pcoin->GetAvailableCredit();
1521 int64_t CWallet::GetWatchOnlyBalance() const
1526 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1528 const CWalletTx* pcoin = &(*it).second;
1529 if (pcoin->IsTrusted())
1530 nTotal += pcoin->GetAvailableWatchCredit();
1537 int64_t CWallet::GetUnconfirmedBalance() const
1542 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1544 const CWalletTx* pcoin = &(*it).second;
1545 if (!pcoin->IsFinal() || !pcoin->IsTrusted())
1546 nTotal += pcoin->GetAvailableCredit();
1552 int64_t CWallet::GetUnconfirmedWatchOnlyBalance() const
1557 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1559 const CWalletTx* pcoin = &(*it).second;
1560 if (!pcoin->IsFinal() || !pcoin->IsTrusted())
1561 nTotal += pcoin->GetAvailableWatchCredit();
1567 int64_t CWallet::GetImmatureBalance() const
1572 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1574 const CWalletTx* pcoin = &(*it).second;
1575 nTotal += pcoin->GetImmatureCredit();
1581 int64_t CWallet::GetImmatureWatchOnlyBalance() const
1586 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1588 const CWalletTx* pcoin = &(*it).second;
1589 nTotal += pcoin->GetImmatureWatchOnlyCredit();
1595 // populate vCoins with vector of spendable COutputs
1596 void CWallet::AvailableCoins(vector<COutput>& vCoins, bool fOnlyConfirmed, const CCoinControl *coinControl) const
1602 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1604 const CWalletTx* pcoin = &(*it).second;
1606 if (!pcoin->IsFinal())
1609 if (fOnlyConfirmed && !pcoin->IsTrusted())
1612 if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
1615 if(pcoin->IsCoinStake() && pcoin->GetBlocksToMaturity() > 0)
1618 for (unsigned int i = 0; i < pcoin->vout.size(); i++) {
1619 isminetype mine = IsMine(pcoin->vout[i]);
1620 if (!(pcoin->IsSpent(i)) && mine != MINE_NO &&
1621 pcoin->vout[i].nValue >= nMinimumInputValue &&
1622 (!coinControl || !coinControl->HasSelected() || coinControl->IsSelected((*it).first, i)))
1624 vCoins.push_back(COutput(pcoin, i, pcoin->GetDepthInMainChain(), mine == MINE_SPENDABLE));
1631 void CWallet::AvailableCoinsMinConf(vector<COutput>& vCoins, int nConf, int64_t nMinValue, int64_t nMaxValue) const
1637 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1639 const CWalletTx* pcoin = &(*it).second;
1641 if (!pcoin->IsFinal())
1644 if(pcoin->GetDepthInMainChain() < nConf)
1647 for (unsigned int i = 0; i < pcoin->vout.size(); i++) {
1648 isminetype mine = IsMine(pcoin->vout[i]);
1650 // ignore coin if it was already spent or we don't own it
1651 if (pcoin->IsSpent(i) || mine == MINE_NO)
1654 // if coin value is between required limits then add new item to vector
1655 if (pcoin->vout[i].nValue >= nMinValue && pcoin->vout[i].nValue < nMaxValue)
1656 vCoins.push_back(COutput(pcoin, i, pcoin->GetDepthInMainChain(), mine == MINE_SPENDABLE));
1662 static void ApproximateBestSubset(vector<pair<int64_t, pair<const CWalletTx*,unsigned int> > >vValue, int64_t nTotalLower, int64_t nTargetValue,
1663 vector<char>& vfBest, int64_t& nBest, int iterations = 1000)
1665 vector<char> vfIncluded;
1667 vfBest.assign(vValue.size(), true);
1668 nBest = nTotalLower;
1670 for (int nRep = 0; nRep < iterations && nBest != nTargetValue; nRep++)
1672 vfIncluded.assign(vValue.size(), false);
1674 bool fReachedTarget = false;
1675 for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
1677 for (unsigned int i = 0; i < vValue.size(); i++)
1679 if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
1681 nTotal += vValue[i].first;
1682 vfIncluded[i] = true;
1683 if (nTotal >= nTargetValue)
1685 fReachedTarget = true;
1689 vfBest = vfIncluded;
1691 nTotal -= vValue[i].first;
1692 vfIncluded[i] = false;
1700 int64_t CWallet::GetStake() const
1704 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1706 const CWalletTx* pcoin = &(*it).second;
1707 if (pcoin->IsCoinStake() && pcoin->GetBlocksToMaturity() > 0 && pcoin->GetDepthInMainChain() > 0)
1708 nTotal += CWallet::GetCredit(*pcoin, MINE_ALL);
1713 int64_t CWallet::GetWatchOnlyStake() const
1717 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1719 const CWalletTx* pcoin = &(*it).second;
1720 if (pcoin->IsCoinStake() && pcoin->GetBlocksToMaturity() > 0 && pcoin->GetDepthInMainChain() > 0)
1721 nTotal += CWallet::GetCredit(*pcoin, MINE_WATCH_ONLY);
1726 int64_t CWallet::GetNewMint() const
1730 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1732 const CWalletTx* pcoin = &(*it).second;
1733 if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0 && pcoin->GetDepthInMainChain() > 0)
1734 nTotal += CWallet::GetCredit(*pcoin, MINE_ALL);
1739 int64_t CWallet::GetWatchOnlyNewMint() const
1743 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1745 const CWalletTx* pcoin = &(*it).second;
1746 if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0 && pcoin->GetDepthInMainChain() > 0)
1747 nTotal += CWallet::GetCredit(*pcoin, MINE_WATCH_ONLY);
1752 bool CWallet::SelectCoinsMinConf(int64_t nTargetValue, unsigned int nSpendTime, int nConfMine, int nConfTheirs, vector<COutput> vCoins, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64_t& nValueRet) const
1754 setCoinsRet.clear();
1757 // List of values less than target
1758 pair<int64_t, pair<const CWalletTx*,unsigned int> > coinLowestLarger;
1759 coinLowestLarger.first = std::numeric_limits<int64_t>::max();
1760 coinLowestLarger.second.first = NULL;
1761 vector<pair<int64_t, pair<const CWalletTx*,unsigned int> > > vValue;
1762 int64_t nTotalLower = 0;
1764 random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
1766 BOOST_FOREACH(const COutput &output, vCoins)
1768 if (!output.fSpendable)
1771 const CWalletTx *pcoin = output.tx;
1773 if (output.nDepth < (pcoin->IsFromMe(MINE_ALL) ? nConfMine : nConfTheirs))
1778 // Follow the timestamp rules
1779 if (pcoin->nTime > nSpendTime)
1782 int64_t n = pcoin->vout[i].nValue;
1784 pair<int64_t,pair<const CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin, i));
1786 if (n == nTargetValue)
1788 setCoinsRet.insert(coin.second);
1789 nValueRet += coin.first;
1792 else if (n < nTargetValue + CENT)
1794 vValue.push_back(coin);
1797 else if (n < coinLowestLarger.first)
1799 coinLowestLarger = coin;
1803 if (nTotalLower == nTargetValue)
1805 for (unsigned int i = 0; i < vValue.size(); ++i)
1807 setCoinsRet.insert(vValue[i].second);
1808 nValueRet += vValue[i].first;
1813 if (nTotalLower < nTargetValue)
1815 if (coinLowestLarger.second.first == NULL)
1817 setCoinsRet.insert(coinLowestLarger.second);
1818 nValueRet += coinLowestLarger.first;
1822 // Solve subset sum by stochastic approximation
1823 sort(vValue.rbegin(), vValue.rend(), CompareValueOnly());
1824 vector<char> vfBest;
1827 ApproximateBestSubset(vValue, nTotalLower, nTargetValue, vfBest, nBest, 1000);
1828 if (nBest != nTargetValue && nTotalLower >= nTargetValue + CENT)
1829 ApproximateBestSubset(vValue, nTotalLower, nTargetValue + CENT, vfBest, nBest, 1000);
1831 // If we have a bigger coin and (either the stochastic approximation didn't find a good solution,
1832 // or the next bigger coin is closer), return the bigger coin
1833 if (coinLowestLarger.second.first &&
1834 ((nBest != nTargetValue && nBest < nTargetValue + CENT) || coinLowestLarger.first <= nBest))
1836 setCoinsRet.insert(coinLowestLarger.second);
1837 nValueRet += coinLowestLarger.first;
1840 for (unsigned int i = 0; i < vValue.size(); i++)
1843 setCoinsRet.insert(vValue[i].second);
1844 nValueRet += vValue[i].first;
1847 if (fDebug && GetBoolArg("-printpriority"))
1850 printf("SelectCoins() best subset: ");
1851 for (unsigned int i = 0; i < vValue.size(); i++)
1853 printf("%s ", FormatMoney(vValue[i].first).c_str());
1854 printf("total %s\n", FormatMoney(nBest).c_str());
1861 bool CWallet::SelectCoins(int64_t nTargetValue, unsigned int nSpendTime, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64_t& nValueRet, const CCoinControl* coinControl) const
1863 vector<COutput> vCoins;
1864 AvailableCoins(vCoins, true, coinControl);
1866 // coin control -> return all selected outputs (we want all selected to go into the transaction for sure)
1867 if (coinControl && coinControl->HasSelected())
1869 BOOST_FOREACH(const COutput& out, vCoins)
1873 nValueRet += out.tx->vout[out.i].nValue;
1874 setCoinsRet.insert(make_pair(out.tx, out.i));
1876 return (nValueRet >= nTargetValue);
1879 return (SelectCoinsMinConf(nTargetValue, nSpendTime, 1, 6, vCoins, setCoinsRet, nValueRet) ||
1880 SelectCoinsMinConf(nTargetValue, nSpendTime, 1, 1, vCoins, setCoinsRet, nValueRet) ||
1881 SelectCoinsMinConf(nTargetValue, nSpendTime, 0, 1, vCoins, setCoinsRet, nValueRet));
1884 // Select some coins without random shuffle or best subset approximation
1885 bool CWallet::SelectCoinsSimple(int64_t nTargetValue, int64_t nMinValue, int64_t nMaxValue, unsigned int nSpendTime, int nMinConf, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64_t& nValueRet) const
1887 vector<COutput> vCoins;
1888 AvailableCoinsMinConf(vCoins, nMinConf, nMinValue, nMaxValue);
1890 setCoinsRet.clear();
1893 BOOST_FOREACH(COutput output, vCoins)
1895 if(!output.fSpendable)
1897 const CWalletTx *pcoin = output.tx;
1900 // Ignore immature coins
1901 if (pcoin->GetBlocksToMaturity() > 0)
1904 // Stop if we've chosen enough inputs
1905 if (nValueRet >= nTargetValue)
1908 // Follow the timestamp rules
1909 if (pcoin->nTime > nSpendTime)
1912 int64_t n = pcoin->vout[i].nValue;
1914 pair<int64_t,pair<const CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin, i));
1916 if (n >= nTargetValue)
1918 // If input value is greater or equal to target then simply insert
1919 // it into the current subset and exit
1920 setCoinsRet.insert(coin.second);
1921 nValueRet += coin.first;
1924 else if (n < nTargetValue + CENT)
1926 setCoinsRet.insert(coin.second);
1927 nValueRet += coin.first;
1934 bool CWallet::CreateTransaction(const vector<pair<CScript, int64_t> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64_t& nFeeRet, const CCoinControl* coinControl)
1937 BOOST_FOREACH (const PAIRTYPE(CScript, int64_t)& s, vecSend)
1943 if (vecSend.empty() || nValue < 0)
1946 wtxNew.BindWallet(this);
1949 LOCK2(cs_main, cs_wallet);
1950 // txdb must be opened before the mapWallet lock
1953 nFeeRet = nTransactionFee;
1957 wtxNew.vout.clear();
1958 wtxNew.fFromMe = true;
1960 int64_t nTotalValue = nValue + nFeeRet;
1961 double dPriority = 0;
1962 // vouts to the payees
1963 BOOST_FOREACH (const PAIRTYPE(CScript, int64_t)& s, vecSend)
1964 wtxNew.vout.push_back(CTxOut(s.second, s.first));
1966 // Choose coins to use
1967 set<pair<const CWalletTx*,unsigned int> > setCoins;
1968 int64_t nValueIn = 0;
1969 if (!SelectCoins(nTotalValue, wtxNew.nTime, setCoins, nValueIn, coinControl))
1971 BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
1973 int64_t nCredit = pcoin.first->vout[pcoin.second].nValue;
1974 dPriority += (double)nCredit * pcoin.first->GetDepthInMainChain();
1977 int64_t nChange = nValueIn - nValue - nFeeRet;
1980 // Fill a vout to ourself
1981 // TODO: pass in scriptChange instead of reservekey so
1982 // change transaction isn't always pay-to-bitcoin-address
1983 CScript scriptChange;
1985 // coin control: send change to custom address
1986 if (coinControl && coinControl->destChange.IsValid())
1987 scriptChange.SetAddress(coinControl->destChange);
1989 // no coin control: send change to newly generated address
1992 // Note: We use a new key here to keep it from being obvious which side is the change.
1993 // The drawback is that by not reusing a previous key, the change may be lost if a
1994 // backup is restored, if the backup doesn't have the new private key for the change.
1995 // If we reused the old key, it would be possible to add code to look for and
1996 // rediscover unknown transactions that were written with keys of ours to recover
1997 // post-backup change.
1999 // Reserve a new key pair from key pool
2000 CPubKey vchPubKey = reservekey.GetReservedKey();
2002 scriptChange.SetDestination(vchPubKey.GetID());
2005 // Insert change txn at random position:
2006 vector<CTxOut>::iterator position = wtxNew.vout.begin()+GetRandInt(wtxNew.vout.size());
2007 wtxNew.vout.insert(position, CTxOut(nChange, scriptChange));
2010 reservekey.ReturnKey();
2013 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
2014 wtxNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second));
2018 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
2019 if (!SignSignature(*this, *coin.first, wtxNew, nIn++))
2023 unsigned int nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK, PROTOCOL_VERSION);
2024 if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
2026 dPriority /= nBytes;
2028 // Check that enough fee is included
2029 bool fAllowFree = CTransaction::AllowFree(dPriority);
2030 int64_t nPayFee = nTransactionFee * (1 + (int64_t)nBytes / 1000);
2031 int64_t nMinFee = wtxNew.GetMinFee(1, fAllowFree, GMF_SEND, nBytes);
2033 if (nFeeRet < max(nPayFee, nMinFee))
2035 nFeeRet = max(nPayFee, nMinFee);
2039 // Fill vtxPrev by copying from previous transactions vtxPrev
2040 wtxNew.AddSupportingTransactions(txdb);
2041 wtxNew.fTimeReceivedIsTxTime = true;
2050 bool CWallet::CreateTransaction(CScript scriptPubKey, int64_t nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64_t& nFeeRet, const CCoinControl* coinControl)
2052 vector< pair<CScript, int64_t> > vecSend;
2053 vecSend.push_back(make_pair(scriptPubKey, nValue));
2054 return CreateTransaction(vecSend, wtxNew, reservekey, nFeeRet, coinControl);
2057 void CWallet::GetStakeWeightFromValue(const int64_t& nTime, const int64_t& nValue, uint64_t& nWeight)
2059 int64_t nTimeWeight = GetWeight(nTime, GetTime());
2061 // If time weight is lower or equal to zero then weight is zero.
2062 if (nTimeWeight <= 0)
2068 CBigNum bnCoinDayWeight = CBigNum(nValue) * nTimeWeight / COIN / nOneDay;
2069 nWeight = bnCoinDayWeight.getuint64();
2072 bool CWallet::MergeCoins(const int64_t& nAmount, const int64_t& nMinValue, const int64_t& nOutputValue, list<uint256>& listMerged)
2074 int64_t nBalance = GetBalance();
2076 if (nAmount > nBalance)
2080 int64_t nValueIn = 0;
2081 set<pair<const CWalletTx*,unsigned int> > setCoins;
2083 // Simple coins selection - no randomization
2084 if (!SelectCoinsSimple(nAmount, nMinValue, nOutputValue, GetTime(), 1, setCoins, nValueIn))
2087 if (setCoins.empty())
2091 vector<const CWalletTx*> vwtxPrev;
2093 // Reserve a new key pair from key pool
2094 CReserveKey reservekey(this);
2095 CPubKey vchPubKey = reservekey.GetReservedKey();
2098 CScript scriptOutput;
2099 scriptOutput.SetDestination(vchPubKey.GetID());
2102 wtxNew.vout.push_back(CTxOut(0, scriptOutput));
2105 BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
2107 int64_t nCredit = pcoin.first->vout[pcoin.second].nValue;
2109 // Add current coin to inputs list and add its credit to transaction output
2110 wtxNew.vin.push_back(CTxIn(pcoin.first->GetHash(), pcoin.second));
2111 wtxNew.vout[0].nValue += nCredit;
2112 vwtxPrev.push_back(pcoin.first);
2115 // Replaced with estimation for performance purposes
2117 for (unsigned int i = 0; i < wtxNew.vin.size(); i++) {
2118 const CWalletTx *txin = vwtxPrev[i];
2120 // Sign scripts to get actual transaction size for fee calculation
2121 if (!SignSignature(*this, *txin, wtxNew, i))
2126 // Assuming that average scriptsig size is 110 bytes
2127 int64_t nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK, PROTOCOL_VERSION) + wtxNew.vin.size() * 110;
2128 dWeight += (double)nCredit * pcoin.first->GetDepthInMainChain();
2130 double dFinalPriority = dWeight /= nBytes;
2131 bool fAllowFree = CTransaction::AllowFree(dFinalPriority);
2133 // Get actual transaction fee according to its estimated size and priority
2134 int64_t nMinFee = wtxNew.GetMinFee(1, fAllowFree, GMF_SEND, nBytes);
2136 // Prepare transaction for commit if sum is enough ot its size is too big
2137 if (nBytes >= MAX_BLOCK_SIZE_GEN/6 || wtxNew.vout[0].nValue >= nOutputValue)
2139 wtxNew.vout[0].nValue -= nMinFee; // Set actual fee
2141 for (unsigned int i = 0; i < wtxNew.vin.size(); i++) {
2142 const CWalletTx *txin = vwtxPrev[i];
2145 if (!SignSignature(*this, *txin, wtxNew, i))
2149 // Try to commit, return false on failure
2150 if (!CommitTransaction(wtxNew, reservekey))
2153 listMerged.push_back(wtxNew.GetHash()); // Add to hashes list
2155 dWeight = 0; // Reset all temporary values
2158 wtxNew.vout.push_back(CTxOut(0, scriptOutput));
2162 // Create transactions if there are some unhandled coins left
2163 if (wtxNew.vout[0].nValue > 0) {
2164 int64_t nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK, PROTOCOL_VERSION) + wtxNew.vin.size() * 110;
2166 double dFinalPriority = dWeight /= nBytes;
2167 bool fAllowFree = CTransaction::AllowFree(dFinalPriority);
2169 // Get actual transaction fee according to its size and priority
2170 int64_t nMinFee = wtxNew.GetMinFee(1, fAllowFree, GMF_SEND, nBytes);
2172 wtxNew.vout[0].nValue -= nMinFee; // Set actual fee
2174 if (wtxNew.vout[0].nValue <= 0)
2177 for (unsigned int i = 0; i < wtxNew.vin.size(); i++) {
2178 const CWalletTx *txin = vwtxPrev[i];
2180 // Sign all scripts again
2181 if (!SignSignature(*this, *txin, wtxNew, i))
2185 // Try to commit, return false on failure
2186 if (!CommitTransaction(wtxNew, reservekey))
2189 listMerged.push_back(wtxNew.GetHash()); // Add to hashes list
2195 bool CWallet::CreateCoinStake(uint256 &hashTx, uint32_t nOut, uint32_t nGenerationTime, uint32_t nBits, CTransaction &txNew, CKey& key)
2198 if (!GetTransaction(hashTx, wtx))
2199 return error("Transaction %s is not found\n", hashTx.GetHex().c_str());
2201 vector<valtype> vSolutions;
2202 txnouttype whichType;
2203 CScript scriptPubKeyOut;
2204 CScript scriptPubKeyKernel = wtx.vout[nOut].scriptPubKey;
2205 if (!Solver(scriptPubKeyKernel, whichType, vSolutions))
2206 return error("CreateCoinStake : failed to parse kernel\n");
2208 if (fDebug && GetBoolArg("-printcoinstake"))
2209 printf("CreateCoinStake : parsed kernel type=%d\n", whichType);
2211 if (whichType != TX_PUBKEY && whichType != TX_PUBKEYHASH)
2212 return error("CreateCoinStake : no support for kernel type=%d\n", whichType);
2214 if (whichType == TX_PUBKEYHASH) // pay to address type
2216 // convert to pay to public key type
2217 if (!GetKey(uint160(vSolutions[0]), key))
2218 return error("CreateCoinStake : failed to get key for kernel type=%d\n", whichType);
2220 scriptPubKeyOut << key.GetPubKey() << OP_CHECKSIG;
2222 if (whichType == TX_PUBKEY)
2224 valtype& vchPubKey = vSolutions[0];
2225 if (!GetKey(Hash160(vchPubKey), key))
2226 return error("CreateCoinStake : failed to get key for kernel type=%d\n", whichType);
2227 if (key.GetPubKey() != vchPubKey)
2228 return error("CreateCoinStake : invalid key for kernel type=%d\n", whichType); // keys mismatch
2229 scriptPubKeyOut = scriptPubKeyKernel;
2232 // The following combine threshold is important to security
2233 // Should not be adjusted if you don't understand the consequences
2234 int64_t nCombineThreshold = GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits) / 3;
2236 int64_t nBalance = GetBalance();
2237 int64_t nCredit = wtx.vout[nOut].nValue;
2242 // List of constake dependencies
2243 vector<const CWalletTx*> vwtxPrev;
2244 vwtxPrev.push_back(&wtx);
2246 // Set generation time, and kernel input
2247 txNew.nTime = nGenerationTime;
2248 txNew.vin.push_back(CTxIn(hashTx, nOut));
2250 // Mark coin stake transaction with empty vout[0]
2251 CScript scriptEmpty;
2252 scriptEmpty.clear();
2253 txNew.vout.push_back(CTxOut(0, scriptEmpty));
2255 if (fDebug && GetBoolArg("-printcoinstake"))
2256 printf("CreateCoinStake : added kernel type=%d\n", whichType);
2258 int64_t nValueIn = 0;
2260 if (!SelectCoinsSimple(nBalance - nReserveBalance, MIN_TX_FEE, MAX_MONEY, nGenerationTime, nCoinbaseMaturity * 10, setCoins, nValueIn))
2263 if (setCoins.empty())
2266 bool fDontSplitCoins = false;
2267 if (GetWeight((int64_t)wtx.nTime, (int64_t)nGenerationTime) == nStakeMaxAge)
2269 // Only one output for old kernel inputs
2270 txNew.vout.push_back(CTxOut(0, scriptPubKeyOut));
2272 // Iterate through set of (wtx*, nout) in order to find some additional inputs for our new coinstake transaction.
2274 // * Value is higher than 0.01 NVC;
2275 // * Only add inputs of the same key/address as kernel;
2276 // * Input hash and kernel parent hash should be different.
2277 for(CoinsSet::iterator pcoin = setCoins.begin(); pcoin != setCoins.end(); pcoin++)
2279 // Stop adding more inputs if already too many inputs
2280 if (txNew.vin.size() >= 100)
2282 // Stop adding more inputs if value is already pretty significant
2283 if (nCredit > nCombineThreshold)
2285 // Stop adding inputs if reached reserve limit
2286 if (nCredit + pcoin->first->vout[pcoin->second].nValue > nBalance - nReserveBalance)
2289 int64_t nTimeWeight = GetWeight((int64_t)pcoin->first->nTime, (int64_t)nGenerationTime);
2291 // Do not add input that is still too young
2292 if (nTimeWeight < nStakeMaxAge)
2294 // Do not add input if key/address is not the same as kernel
2295 if (pcoin->first->vout[pcoin->second].scriptPubKey != scriptPubKeyKernel && pcoin->first->vout[pcoin->second].scriptPubKey != txNew.vout[1].scriptPubKey)
2297 // Do not add input if parents are the same
2298 if (pcoin->first->GetHash() != txNew.vin[0].prevout.hash)
2300 // Do not add additional significant input
2301 if (pcoin->first->vout[pcoin->second].nValue > nCombineThreshold)
2304 txNew.vin.push_back(CTxIn(pcoin->first->GetHash(), pcoin->second));
2305 nCredit += pcoin->first->vout[pcoin->second].nValue;
2306 vwtxPrev.push_back(pcoin->first);
2309 fDontSplitCoins = true;
2313 int64_t nSplitThreshold = GetArg("-splitthreshold", nCombineThreshold);
2315 if (fDebug && GetBoolArg("-printcoinstake"))
2316 printf("CreateCoinStake : nSplitThreshold=%" PRId64 "\n", nSplitThreshold);
2318 if (nCredit > nSplitThreshold)
2320 // Split stake input if credit is lower than combine threshold and maximum weight isn't reached yet
2321 txNew.vout.push_back(CTxOut(0, scriptPubKeyOut));
2322 txNew.vout.push_back(CTxOut(0, scriptPubKeyOut));
2324 if (fDebug && GetBoolArg("-printcoinstake"))
2325 printf("CreateCoinStake : splitting coinstake\n");
2329 txNew.vout.push_back(CTxOut(0, scriptPubKeyOut));
2330 fDontSplitCoins = true;
2334 // Calculate coin age reward
2337 if (!txNew.GetCoinAge(txdb, nCoinAge))
2338 return error("CreateCoinStake : failed to calculate coin age\n");
2339 nCredit += GetProofOfStakeReward(nCoinAge, nBits, nGenerationTime);
2341 int64_t nMinFee = 0;
2344 // Set output amount
2345 if (fDontSplitCoins)
2346 txNew.vout[1].nValue = nCredit - nMinFee;
2349 txNew.vout[1].nValue = ((nCredit - nMinFee) / 2 / CENT) * CENT;
2350 txNew.vout[2].nValue = nCredit - nMinFee - txNew.vout[1].nValue;
2355 BOOST_FOREACH(const CWalletTx* pcoin, vwtxPrev)
2357 if (!SignSignature(*this, *pcoin, txNew, nIn++))
2358 return error("CreateCoinStake : failed to sign coinstake\n");
2362 unsigned int nBytes = ::GetSerializeSize(txNew, SER_NETWORK, PROTOCOL_VERSION);
2363 if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
2364 return error("CreateCoinStake : exceeded coinstake size limit\n");
2366 // Check enough fee is paid
2367 if (nMinFee < txNew.GetMinFee(1, false, GMF_BLOCK, nBytes) - CENT)
2369 nMinFee = txNew.GetMinFee(1, false, GMF_BLOCK, nBytes) - CENT;
2370 continue; // try signing again
2374 if (fDebug && GetBoolArg("-printfee"))
2375 printf("CreateCoinStake : fee for coinstake %s\n", FormatMoney(nMinFee).c_str());
2380 // Successfully created coinstake
2384 // Call after CreateTransaction unless you want to abort
2385 bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
2388 printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
2390 // Track how many getdata requests our transaction gets
2391 mapRequestCount[wtxNew.GetHash()] = 0;
2393 // Try to broadcast before saving
2394 if (!wtxNew.AcceptToMemoryPool())
2396 // This must not fail. The transaction has already been signed.
2397 printf("CommitTransaction() : Error: Transaction not valid");
2401 wtxNew.RelayWalletTransaction();
2404 LOCK2(cs_main, cs_wallet);
2406 // This is only to keep the database open to defeat the auto-flush for the
2407 // duration of this scope. This is the only place where this optimization
2408 // maybe makes sense; please don't do it anywhere else.
2409 CWalletDB* pwalletdb = fFileBacked ? new CWalletDB(strWalletFile,"r") : NULL;
2411 // Take key pair from key pool so it won't be used again
2412 reservekey.KeepKey();
2414 // Add tx to wallet, because if it has change it's also ours,
2415 // otherwise just for transaction history.
2416 AddToWallet(wtxNew);
2418 // Mark old coins as spent
2419 BOOST_FOREACH(const CTxIn& txin, wtxNew.vin)
2421 CWalletTx &coin = mapWallet[txin.prevout.hash];
2422 coin.BindWallet(this);
2423 coin.MarkSpent(txin.prevout.n);
2425 NotifyTransactionChanged(this, coin.GetHash(), CT_UPDATED);
2426 vMintingWalletUpdated.push_back(coin.GetHash());
2439 string CWallet::SendMoney(CScript scriptPubKey, int64_t nValue, CWalletTx& wtxNew, bool fAskFee)
2443 return _("Invalid amount");
2444 if (nValue + nTransactionFee > GetBalance())
2445 return _("Insufficient funds");
2447 CReserveKey reservekey(this);
2448 int64_t nFeeRequired;
2452 string strError = _("Error: Wallet locked, unable to create transaction ");
2453 printf("SendMoney() : %s", strError.c_str());
2456 if (fWalletUnlockMintOnly)
2458 string strError = _("Error: Wallet unlocked for block minting only, unable to create transaction.");
2459 printf("SendMoney() : %s", strError.c_str());
2462 if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired))
2465 if (nValue + nFeeRequired > GetBalance())
2466 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());
2468 strError = _("Error: Transaction creation failed ");
2469 printf("SendMoney() : %s", strError.c_str());
2473 if (fAskFee && !uiInterface.ThreadSafeAskFee(nFeeRequired, _("Sending...")))
2476 if (!CommitTransaction(wtxNew, reservekey))
2477 return _("Error: The transaction was rejected. This might happen if some of the coins in your wallet were already spent, such as if you used a copy of wallet.dat and coins were spent in the copy but not marked as spent here.");
2482 DBErrors CWallet::LoadWallet(bool& fFirstRunRet)
2486 fFirstRunRet = false;
2487 DBErrors nLoadWalletRet = CWalletDB(strWalletFile,"cr+").LoadWallet(this);
2488 if (nLoadWalletRet == DB_NEED_REWRITE)
2490 if (CDB::Rewrite(strWalletFile, "\x04pool"))
2493 // Note: can't top-up keypool here, because wallet is locked.
2494 // User will be prompted to unlock wallet the next operation
2495 // the requires a new key.
2499 if (nLoadWalletRet != DB_LOAD_OK)
2500 return nLoadWalletRet;
2501 fFirstRunRet = !vchDefaultKey.IsValid();
2503 NewThread(ThreadFlushWalletDB, &strWalletFile);
2507 DBErrors CWallet::ZapWalletTx()
2511 DBErrors nZapWalletTxRet = CWalletDB(strWalletFile,"cr+").ZapWalletTx(this);
2512 if (nZapWalletTxRet == DB_NEED_REWRITE)
2514 if (CDB::Rewrite(strWalletFile, "\x04pool"))
2518 // Note: can't top-up keypool here, because wallet is locked.
2519 // User will be prompted to unlock wallet the next operation
2520 // the requires a new key.
2524 if (nZapWalletTxRet != DB_LOAD_OK)
2525 return nZapWalletTxRet;
2530 bool CWallet::SetAddressBookName(const CTxDestination& address, const string& strName)
2532 return SetAddressBookName(CBitcoinAddress(address), strName);
2535 bool CWallet::SetAddressBookName(const CBitcoinAddress& address, const string& strName)
2537 std::map<CBitcoinAddress, string>::iterator mi = mapAddressBook.find(address);
2538 mapAddressBook[address] = strName;
2539 NotifyAddressBookChanged(this, address, strName, ::IsMine(*this, address) != MINE_NO, (mi == mapAddressBook.end()) ? CT_NEW : CT_UPDATED);
2542 return CWalletDB(strWalletFile).WriteName(address.ToString(), strName);
2545 bool CWallet::DelAddressBookName(const CBitcoinAddress& address)
2547 mapAddressBook.erase(address);
2548 NotifyAddressBookChanged(this, address, "", ::IsMine(*this, address) != MINE_NO, CT_DELETED);
2551 return CWalletDB(strWalletFile).EraseName(address.ToString());
2555 void CWallet::PrintWallet(const CBlock& block)
2559 if (block.IsProofOfStake() && mapWallet.count(block.vtx[1].GetHash()))
2561 CWalletTx& wtx = mapWallet[block.vtx[1].GetHash()];
2562 printf(" PoS: %d %d %" PRId64 "", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit(MINE_ALL));
2564 else if (mapWallet.count(block.vtx[0].GetHash()))
2566 CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];
2567 printf(" PoW: %d %d %" PRId64 "", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit(MINE_ALL));
2573 bool CWallet::GetTransaction(const uint256 &hashTx, CWalletTx& wtx)
2577 map<uint256, CWalletTx>::iterator mi = mapWallet.find(hashTx);
2578 if (mi != mapWallet.end())
2587 bool CWallet::SetDefaultKey(const CPubKey &vchPubKey)
2591 if (!CWalletDB(strWalletFile).WriteDefaultKey(vchPubKey))
2594 vchDefaultKey = vchPubKey;
2598 bool GetWalletFile(CWallet* pwallet, string &strWalletFileOut)
2600 if (!pwallet->fFileBacked)
2602 strWalletFileOut = pwallet->strWalletFile;
2607 // Mark old keypool keys as used,
2608 // and generate all new keys
2610 bool CWallet::NewKeyPool(unsigned int nSize)
2614 CWalletDB walletdb(strWalletFile);
2615 BOOST_FOREACH(int64_t nIndex, setKeyPool)
2616 walletdb.ErasePool(nIndex);
2626 nKeys = max<uint64_t>(GetArg("-keypool", 100), 0);
2628 for (uint64_t i = 0; i < nKeys; i++)
2630 uint64_t nIndex = i+1;
2631 walletdb.WritePool(nIndex, CKeyPool(GenerateNewKey()));
2632 setKeyPool.insert(nIndex);
2634 printf("CWallet::NewKeyPool wrote %" PRIu64 " new keys\n", nKeys);
2639 bool CWallet::TopUpKeyPool(unsigned int nSize)
2647 CWalletDB walletdb(strWalletFile);
2650 uint64_t nTargetSize;
2652 nTargetSize = nSize;
2654 nTargetSize = max<uint64_t>(GetArg("-keypool", 100), 0);
2656 while (setKeyPool.size() < (nTargetSize + 1))
2659 if (!setKeyPool.empty())
2660 nEnd = *(--setKeyPool.end()) + 1;
2661 if (!walletdb.WritePool(nEnd, CKeyPool(GenerateNewKey())))
2662 throw runtime_error("TopUpKeyPool() : writing generated key failed");
2663 setKeyPool.insert(nEnd);
2664 printf("keypool added key %" PRIu64 ", size=%" PRIszu "\n", nEnd, setKeyPool.size());
2670 void CWallet::ReserveKeyFromKeyPool(int64_t& nIndex, CKeyPool& keypool)
2673 keypool.vchPubKey = CPubKey();
2680 // Get the oldest key
2681 if(setKeyPool.empty())
2684 CWalletDB walletdb(strWalletFile);
2686 nIndex = *(setKeyPool.begin());
2687 setKeyPool.erase(setKeyPool.begin());
2688 if (!walletdb.ReadPool(nIndex, keypool))
2689 throw runtime_error("ReserveKeyFromKeyPool() : read failed");
2690 if (!HaveKey(keypool.vchPubKey.GetID()))
2691 throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
2692 assert(keypool.vchPubKey.IsValid());
2693 if (fDebug && GetBoolArg("-printkeypool"))
2694 printf("keypool reserve %" PRId64 "\n", nIndex);
2698 int64_t CWallet::AddReserveKey(const CKeyPool& keypool)
2701 LOCK2(cs_main, cs_wallet);
2702 CWalletDB walletdb(strWalletFile);
2704 int64_t nIndex = 1 + *(--setKeyPool.end());
2705 if (!walletdb.WritePool(nIndex, keypool))
2706 throw runtime_error("AddReserveKey() : writing added key failed");
2707 setKeyPool.insert(nIndex);
2713 void CWallet::KeepKey(int64_t nIndex)
2715 // Remove from key pool
2718 CWalletDB walletdb(strWalletFile);
2719 walletdb.ErasePool(nIndex);
2722 printf("keypool keep %" PRId64 "\n", nIndex);
2725 void CWallet::ReturnKey(int64_t nIndex)
2727 // Return to key pool
2730 setKeyPool.insert(nIndex);
2733 printf("keypool return %" PRId64 "\n", nIndex);
2736 bool CWallet::GetKeyFromPool(CPubKey& result, bool fAllowReuse)
2742 ReserveKeyFromKeyPool(nIndex, keypool);
2745 if (fAllowReuse && vchDefaultKey.IsValid())
2747 result = vchDefaultKey;
2750 if (IsLocked()) return false;
2751 result = GenerateNewKey();
2755 result = keypool.vchPubKey;
2760 int64_t CWallet::GetOldestKeyPoolTime()
2764 ReserveKeyFromKeyPool(nIndex, keypool);
2768 return keypool.nTime;
2771 std::map<CBitcoinAddress, int64_t> CWallet::GetAddressBalances()
2773 map<CBitcoinAddress, int64_t> balances;
2777 BOOST_FOREACH(PAIRTYPE(uint256, CWalletTx) walletEntry, mapWallet)
2779 CWalletTx *pcoin = &walletEntry.second;
2781 if (!pcoin->IsFinal() || !pcoin->IsTrusted())
2784 if ((pcoin->IsCoinBase() || pcoin->IsCoinStake()) && pcoin->GetBlocksToMaturity() > 0)
2787 int nDepth = pcoin->GetDepthInMainChain();
2788 if (nDepth < (pcoin->IsFromMe(MINE_ALL) ? 0 : 1))
2791 for (unsigned int i = 0; i < pcoin->vout.size(); i++)
2793 CBitcoinAddress addr;
2794 if (!IsMine(pcoin->vout[i]))
2796 if(!ExtractAddress(*this, pcoin->vout[i].scriptPubKey, addr))
2799 int64_t n = pcoin->IsSpent(i) ? 0 : pcoin->vout[i].nValue;
2801 if (!balances.count(addr))
2803 balances[addr] += n;
2811 set< set<CBitcoinAddress> > CWallet::GetAddressGroupings()
2813 set< set<CBitcoinAddress> > groupings;
2814 set<CBitcoinAddress> grouping;
2816 BOOST_FOREACH(PAIRTYPE(uint256, CWalletTx) walletEntry, mapWallet)
2818 CWalletTx *pcoin = &walletEntry.second;
2820 if (pcoin->vin.size() > 0 && IsMine(pcoin->vin[0]))
2822 // group all input addresses with each other
2823 BOOST_FOREACH(CTxIn txin, pcoin->vin)
2825 CBitcoinAddress address;
2826 if(!ExtractAddress(*this, mapWallet[txin.prevout.hash].vout[txin.prevout.n].scriptPubKey, address))
2828 grouping.insert(address);
2831 // group change with input addresses
2832 BOOST_FOREACH(CTxOut txout, pcoin->vout)
2833 if (IsChange(txout))
2835 CWalletTx tx = mapWallet[pcoin->vin[0].prevout.hash];
2836 CBitcoinAddress txoutAddr;
2837 if(!ExtractAddress(*this, txout.scriptPubKey, txoutAddr))
2839 grouping.insert(txoutAddr);
2841 groupings.insert(grouping);
2845 // group lone addrs by themselves
2846 for (unsigned int i = 0; i < pcoin->vout.size(); i++)
2847 if (IsMine(pcoin->vout[i]))
2849 CBitcoinAddress address;
2850 if(!ExtractAddress(*this, pcoin->vout[i].scriptPubKey, address))
2852 grouping.insert(address);
2853 groupings.insert(grouping);
2858 set< set<CBitcoinAddress>* > uniqueGroupings; // a set of pointers to groups of addresses
2859 map< CBitcoinAddress, set<CBitcoinAddress>* > setmap; // map addresses to the unique group containing it
2860 BOOST_FOREACH(set<CBitcoinAddress> grouping, groupings)
2862 // make a set of all the groups hit by this new group
2863 set< set<CBitcoinAddress>* > hits;
2864 map< CBitcoinAddress, set<CBitcoinAddress>* >::iterator it;
2865 BOOST_FOREACH(CBitcoinAddress address, grouping)
2866 if ((it = setmap.find(address)) != setmap.end())
2867 hits.insert((*it).second);
2869 // merge all hit groups into a new single group and delete old groups
2870 set<CBitcoinAddress>* merged = new set<CBitcoinAddress>(grouping);
2871 BOOST_FOREACH(set<CBitcoinAddress>* hit, hits)
2873 merged->insert(hit->begin(), hit->end());
2874 uniqueGroupings.erase(hit);
2877 uniqueGroupings.insert(merged);
2880 BOOST_FOREACH(CBitcoinAddress element, *merged)
2881 setmap[element] = merged;
2884 set< set<CBitcoinAddress> > ret;
2885 BOOST_FOREACH(set<CBitcoinAddress>* uniqueGrouping, uniqueGroupings)
2887 ret.insert(*uniqueGrouping);
2888 delete uniqueGrouping;
2894 // ppcoin: check 'spent' consistency between wallet and txindex
2895 // ppcoin: fix wallet spent state according to txindex
2896 void CWallet::FixSpentCoins(int& nMismatchFound, int64_t& nBalanceInQuestion, bool fCheckOnly)
2899 nBalanceInQuestion = 0;
2902 vector<CWalletTx*> vCoins;
2903 vCoins.reserve(mapWallet.size());
2904 for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
2905 vCoins.push_back(&(*it).second);
2908 BOOST_FOREACH(CWalletTx* pcoin, vCoins)
2910 // Find the corresponding transaction index
2912 if (!txdb.ReadTxIndex(pcoin->GetHash(), txindex))
2914 for (unsigned int n=0; n < pcoin->vout.size(); n++)
2916 if (IsMine(pcoin->vout[n]) && pcoin->IsSpent(n) && (txindex.vSpent.size() <= n || txindex.vSpent[n].IsNull()))
2918 printf("FixSpentCoins found lost coin %sppc %s[%u], %s\n",
2919 FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n, fCheckOnly? "repair not attempted" : "repairing");
2921 nBalanceInQuestion += pcoin->vout[n].nValue;
2924 pcoin->MarkUnspent(n);
2925 pcoin->WriteToDisk();
2928 else if (IsMine(pcoin->vout[n]) && !pcoin->IsSpent(n) && (txindex.vSpent.size() > n && !txindex.vSpent[n].IsNull()))
2930 printf("FixSpentCoins found spent coin %sppc %s[%u], %s\n",
2931 FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n, fCheckOnly? "repair not attempted" : "repairing");
2933 nBalanceInQuestion += pcoin->vout[n].nValue;
2936 pcoin->MarkSpent(n);
2937 pcoin->WriteToDisk();
2943 if(IsMine((CTransaction)*pcoin) && (pcoin->IsCoinBase() || pcoin->IsCoinStake()) && pcoin->GetDepthInMainChain() == 0)
2945 printf("FixSpentCoins %s tx %s\n", fCheckOnly ? "found" : "removed", pcoin->GetHash().ToString().c_str());
2948 EraseFromWallet(pcoin->GetHash());
2954 // ppcoin: disable transaction (only for coinstake)
2955 void CWallet::DisableTransaction(const CTransaction &tx)
2957 if (!tx.IsCoinStake() || !IsFromMe(tx))
2958 return; // only disconnecting coinstake requires marking input unspent
2961 BOOST_FOREACH(const CTxIn& txin, tx.vin)
2963 map<uint256, CWalletTx>::iterator mi = mapWallet.find(txin.prevout.hash);
2964 if (mi != mapWallet.end())
2966 CWalletTx& prev = (*mi).second;
2967 if (txin.prevout.n < prev.vout.size() && IsMine(prev.vout[txin.prevout.n]))
2969 prev.MarkUnspent(txin.prevout.n);
2976 CPubKey CReserveKey::GetReservedKey()
2981 pwallet->ReserveKeyFromKeyPool(nIndex, keypool);
2983 vchPubKey = keypool.vchPubKey;
2986 printf("CReserveKey::GetReservedKey(): Warning: Using default key instead of a new key, top up your keypool!");
2987 vchPubKey = pwallet->vchDefaultKey;
2990 assert(vchPubKey.IsValid());
2994 void CReserveKey::KeepKey()
2997 pwallet->KeepKey(nIndex);
2999 vchPubKey = CPubKey();
3002 void CReserveKey::ReturnKey()
3005 pwallet->ReturnKey(nIndex);
3007 vchPubKey = CPubKey();
3010 void CWallet::GetAllReserveKeys(set<CKeyID>& setAddress) const
3014 CWalletDB walletdb(strWalletFile);
3016 LOCK2(cs_main, cs_wallet);
3017 BOOST_FOREACH(const int64_t& id, setKeyPool)
3020 if (!walletdb.ReadPool(id, keypool))
3021 throw runtime_error("GetAllReserveKeyHashes() : read failed");
3022 assert(keypool.vchPubKey.IsValid());
3023 CKeyID keyID = keypool.vchPubKey.GetID();
3024 if (!HaveKey(keyID))
3025 throw runtime_error("GetAllReserveKeyHashes() : unknown key in key pool");
3026 setAddress.insert(keyID);
3030 void CWallet::UpdatedTransaction(const uint256 &hashTx)
3034 // Only notify UI if this transaction is in this wallet
3035 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(hashTx);
3036 if (mi != mapWallet.end())
3038 NotifyTransactionChanged(this, hashTx, CT_UPDATED);
3039 vMintingWalletUpdated.push_back(hashTx);
3044 void CWallet::GetAddresses(std::map<CBitcoinAddress, int64_t> &mapAddresses) const {
3045 mapAddresses.clear();
3047 // get birth times for keys with metadata
3048 for (std::map<CBitcoinAddress, CKeyMetadata>::const_iterator it = mapKeyMetadata.begin(); it != mapKeyMetadata.end(); it++) {
3049 mapAddresses[it->first] = it->second.nCreateTime ? it->second.nCreateTime : 0;
3052 for (std::map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); it++) {
3053 // iterate over all wallet transactions...
3054 const CWalletTx &wtx = (*it).second;
3055 if (wtx.hashBlock == 0)
3056 continue; // skip unconfirmed transactions
3058 for(std::vector<CTxOut>::const_iterator it2 = wtx.vout.begin(); it2 != wtx.vout.end(); it2++) {
3059 const CTxOut &out = (*it2);
3060 // iterate over all their outputs
3061 CBitcoinAddress addressRet;
3062 if (ExtractAddress(*this, out.scriptPubKey, addressRet)) {
3063 if (mapAddresses.find(addressRet) != mapAddresses.end() && (mapAddresses[addressRet] == 0 || mapAddresses[addressRet] > wtx.nTime))
3064 mapAddresses[addressRet] = wtx.nTime;
3067 // multisig output affects more than one key
3068 std::vector<CKeyID> vAffected;
3069 ::ExtractAffectedKeys(*this, out.scriptPubKey, vAffected);
3071 for(std::vector<CKeyID>::const_iterator it3 = vAffected.begin(); it3 != vAffected.end(); it3++) {
3072 CBitcoinAddress addrAffected(*it3);
3073 if (mapAddresses.find(addrAffected) != mapAddresses.end() && (mapAddresses[addrAffected] == 0 || mapAddresses[addrAffected] > wtx.nTime))
3074 mapAddresses[addrAffected] = wtx.nTime;
3082 void CWallet::ClearOrphans()
3084 list<uint256> orphans;
3087 for(map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
3089 const CWalletTx *wtx = &(*it).second;
3090 if((wtx->IsCoinBase() || wtx->IsCoinStake()) && !wtx->IsInMainChain())
3092 orphans.push_back(wtx->GetHash());
3096 for(list<uint256>::const_iterator it = orphans.begin(); it != orphans.end(); ++it)
3097 EraseFromWallet(*it);