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.
6 #include "txdb-leveldb.h"
10 #include "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 for (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 for (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 for (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 int64_t CWallet::IncOrderPosNext(CWalletDB *pwalletdb)
531 int64_t nRet = nOrderPosNext++;
533 pwalletdb->WriteOrderPosNext(nOrderPosNext);
535 CWalletDB(strWalletFile).WriteOrderPosNext(nOrderPosNext);
540 CWallet::TxItems CWallet::OrderedTxItems(std::list<CAccountingEntry>& acentries, std::string strAccount)
542 CWalletDB walletdb(strWalletFile);
544 // First: get all CWalletTx and CAccountingEntry into a sorted-by-order multimap.
547 // Note: maintaining indices in the database of (account,time) --> txid and (account, time) --> acentry
548 // would make this much faster for applications that do this a lot.
549 for (auto & it : mapWallet)
551 CWalletTx* wtx = &(it.second);
552 txOrdered.insert(make_pair(wtx->nOrderPos, TxPair(wtx, (CAccountingEntry*)nullptr)));
555 walletdb.ListAccountCreditDebit(strAccount, acentries);
556 for (CAccountingEntry& entry : acentries)
558 txOrdered.insert(make_pair(entry.nOrderPos, TxPair((CWalletTx*)nullptr, &entry)));
564 void CWallet::WalletUpdateSpent(const CTransaction &tx, bool fBlock)
566 // Anytime a signature is successfully verified, it's proof the outpoint is spent.
567 // Update the wallet spent flag if it doesn't know due to wallet.dat being
568 // restored from backup or the user making copies of wallet.dat.
571 for (const CTxIn& txin : tx.vin)
573 map<uint256, CWalletTx>::iterator mi = mapWallet.find(txin.prevout.hash);
574 if (mi != mapWallet.end())
576 CWalletTx& wtx = (*mi).second;
577 if (txin.prevout.n >= wtx.vout.size())
578 printf("WalletUpdateSpent: bad wtx %s\n", wtx.GetHash().ToString().c_str());
579 else if (!wtx.IsSpent(txin.prevout.n) && IsMine(wtx.vout[txin.prevout.n]))
581 printf("WalletUpdateSpent found spent coin %snvc %s\n", FormatMoney(wtx.GetCredit(MINE_ALL)).c_str(), wtx.GetHash().ToString().c_str());
582 wtx.MarkSpent(txin.prevout.n);
584 NotifyTransactionChanged(this, txin.prevout.hash, CT_UPDATED);
585 vMintingWalletUpdated.push_back(txin.prevout.hash);
592 uint256 hash = tx.GetHash();
593 map<uint256, CWalletTx>::iterator mi = mapWallet.find(hash);
594 CWalletTx& wtx = (*mi).second;
596 for (const CTxOut& txout : tx.vout)
600 wtx.MarkUnspent(&txout - &tx.vout[0]);
602 NotifyTransactionChanged(this, hash, CT_UPDATED);
603 vMintingWalletUpdated.push_back(hash);
611 void CWallet::MarkDirty()
615 for (auto& item : mapWallet)
616 item.second.MarkDirty();
620 bool CWallet::AddToWallet(const CWalletTx& wtxIn)
622 uint256 hash = wtxIn.GetHash();
625 // Inserts only if not already there, returns tx inserted or tx found
626 pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
627 CWalletTx& wtx = (*ret.first).second;
628 wtx.BindWallet(this);
629 bool fInsertedNew = ret.second;
632 wtx.nTimeReceived = GetAdjustedTime();
633 wtx.nOrderPos = IncOrderPosNext();
635 wtx.nTimeSmart = wtx.nTimeReceived;
636 if (wtxIn.hashBlock != 0)
638 if (mapBlockIndex.count(wtxIn.hashBlock))
640 unsigned int latestNow = wtx.nTimeReceived;
641 unsigned int latestEntry = 0;
643 // Tolerate times up to the last timestamp in the wallet not more than 5 minutes into the future
644 int64_t latestTolerated = latestNow + 300;
645 std::list<CAccountingEntry> acentries;
646 TxItems txOrdered = OrderedTxItems(acentries);
647 for (TxItems::reverse_iterator it = txOrdered.rbegin(); it != txOrdered.rend(); ++it)
649 CWalletTx *const pwtx = (*it).second.first;
652 CAccountingEntry *const pacentry = (*it).second.second;
656 nSmartTime = pwtx->nTimeSmart;
658 nSmartTime = pwtx->nTimeReceived;
661 nSmartTime = pacentry->nTime;
662 if (nSmartTime <= latestTolerated)
664 latestEntry = nSmartTime;
665 if (nSmartTime > latestNow)
666 latestNow = nSmartTime;
672 unsigned int& blocktime = mapBlockIndex[wtxIn.hashBlock]->nTime;
673 wtx.nTimeSmart = std::max(latestEntry, std::min(blocktime, latestNow));
676 printf("AddToWallet() : found %s in block %s not in index\n",
677 wtxIn.GetHash().ToString().substr(0,10).c_str(),
678 wtxIn.hashBlock.ToString().c_str());
682 bool fUpdated = false;
686 if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
688 wtx.hashBlock = wtxIn.hashBlock;
691 if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
693 wtx.vMerkleBranch = wtxIn.vMerkleBranch;
694 wtx.nIndex = wtxIn.nIndex;
697 if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
699 wtx.fFromMe = wtxIn.fFromMe;
702 fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
706 printf("AddToWallet %s %s%s\n", wtxIn.GetHash().ToString().substr(0,10).c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
709 if (fInsertedNew || fUpdated)
710 if (!wtx.WriteToDisk())
713 // If default receiving address gets used, replace it with a new one
714 CScript scriptDefaultKey;
715 scriptDefaultKey.SetDestination(vchDefaultKey.GetID());
716 for (const CTxOut& txout : wtx.vout)
718 if (txout.scriptPubKey == scriptDefaultKey)
720 CPubKey newDefaultKey;
721 if (GetKeyFromPool(newDefaultKey, false))
723 SetDefaultKey(newDefaultKey);
724 SetAddressBookName(vchDefaultKey.GetID(), "");
729 // since AddToWallet is called directly for self-originating transactions, check for consumption of own coins
730 WalletUpdateSpent(wtx, (wtxIn.hashBlock != 0));
732 // Notify UI of new or updated transaction
733 NotifyTransactionChanged(this, hash, fInsertedNew ? CT_NEW : CT_UPDATED);
734 vMintingWalletUpdated.push_back(hash);
735 // notify an external script when a wallet transaction comes in or is updated
736 std::string strCmd = GetArg("-walletnotify", "");
738 if ( !strCmd.empty())
740 boost::replace_all(strCmd, "%s", wtxIn.GetHash().GetHex());
741 boost::thread t(runCommand, strCmd); // thread runs free
748 // Add a transaction to the wallet, or update it.
749 // pblock is optional, but should be provided if the transaction is known to be in a block.
750 // If fUpdate is true, existing transactions will be updated.
751 bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
753 uint256 hash = tx.GetHash();
756 bool fExisted = mapWallet.count(hash) != 0;
757 if (fExisted && !fUpdate) return false;
758 if (fExisted || IsMine(tx) || IsFromMe(tx))
760 CWalletTx wtx(this,tx);
761 // Get merkle branch if transaction was found in a block
763 wtx.SetMerkleBranch(pblock);
764 return AddToWallet(wtx);
767 WalletUpdateSpent(tx);
772 bool CWallet::EraseFromWallet(uint256 hash)
778 if (mapWallet.erase(hash))
779 CWalletDB(strWalletFile).EraseTx(hash);
785 isminetype CWallet::IsMine(const CTxIn &txin) const
789 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
790 if (mi != mapWallet.end())
792 const CWalletTx& prev = (*mi).second;
793 if (txin.prevout.n < prev.vout.size())
794 return IsMine(prev.vout[txin.prevout.n]);
800 // marks certain txout's as spent
801 // returns true if any update took place
802 bool CWalletTx::UpdateSpent(const std::vector<char>& vfNewSpent)
804 bool fReturn = false;
805 for (unsigned int i = 0; i < vfNewSpent.size(); i++)
807 if (i == vfSpent.size())
810 if (vfNewSpent[i] && !vfSpent[i])
814 fAvailableCreditCached = fAvailableWatchCreditCached = false;
820 // make sure balances are recalculated
821 void CWalletTx::MarkDirty()
823 fCreditCached = false;
824 fAvailableCreditCached = fAvailableWatchCreditCached = false;
825 fDebitCached = fWatchDebitCached = false;
826 fChangeCached = false;
829 void CWalletTx::BindWallet(CWallet *pwalletIn)
835 void CWalletTx::MarkSpent(unsigned int nOut)
837 if (nOut >= vout.size())
838 throw std::runtime_error("CWalletTx::MarkSpent() : nOut out of range");
839 vfSpent.resize(vout.size());
842 vfSpent[nOut] = true;
843 fAvailableCreditCached = fAvailableWatchCreditCached = false;
847 void CWalletTx::MarkUnspent(unsigned int nOut)
849 if (nOut >= vout.size())
850 throw std::runtime_error("CWalletTx::MarkUnspent() : nOut out of range");
851 vfSpent.resize(vout.size());
854 vfSpent[nOut] = false;
855 fAvailableCreditCached = fAvailableWatchCreditCached = false;
859 bool CWalletTx::IsSpent(unsigned int nOut) const
861 if (nOut >= vout.size())
862 throw std::runtime_error("CWalletTx::IsSpent() : nOut out of range");
863 if (nOut >= vfSpent.size())
865 return (!!vfSpent[nOut]);
868 int64_t CWallet::GetDebit(const CTxIn &txin, const isminefilter& filter) const
872 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
873 if (mi != mapWallet.end())
875 const CWalletTx& prev = (*mi).second;
876 if (txin.prevout.n < prev.vout.size())
877 if (IsMine(prev.vout[txin.prevout.n]) & filter)
878 return prev.vout[txin.prevout.n].nValue;
884 isminetype CWallet::IsMine(const CTxOut& txout) const
886 return ::IsMine(*this, txout.scriptPubKey);
889 int64_t CWallet::GetCredit(const CTxOut& txout, const isminefilter& filter) const
891 if (!MoneyRange(txout.nValue))
892 throw std::runtime_error("CWallet::GetCredit() : value out of range");
893 return (IsMine(txout) & filter ? txout.nValue : 0);
896 bool CWallet::IsChange(const CTxOut& txout) const
898 // TODO: fix handling of 'change' outputs. The assumption is that any
899 // payment to a script that is ours, but isn't in the address book
900 // is change. That assumption is likely to break when we implement multisignature
901 // wallets that return change back into a multi-signature-protected address;
902 // a better way of identifying which outputs are 'the send' and which are
903 // 'the change' will need to be implemented (maybe extend CWalletTx to remember
904 // which output, if any, was change).
905 if (::IsMine(*this, txout.scriptPubKey))
907 CTxDestination address;
908 if (!ExtractDestination(txout.scriptPubKey, address))
912 if (!mapAddressBook.count(address))
918 int64_t CWallet::GetChange(const CTxOut& txout) const
920 if (!MoneyRange(txout.nValue))
921 throw std::runtime_error("CWallet::GetChange() : value out of range");
922 return (IsChange(txout) ? txout.nValue : 0);
925 bool CWallet::IsMine(const CTransaction& tx) const
927 for (const CTxOut& txout : tx.vout)
928 if (IsMine(txout) && txout.nValue >= nMinimumInputValue)
933 bool CWallet::IsFromMe(const CTransaction& tx) const
935 return (GetDebit(tx, MINE_ALL) > 0);
938 int64_t CWallet::GetDebit(const CTransaction& tx, const isminefilter& filter) const
941 for (const CTxIn& txin : tx.vin)
943 nDebit += GetDebit(txin, filter);
944 if (!MoneyRange(nDebit))
945 throw std::runtime_error("CWallet::GetDebit() : value out of range");
950 int64_t CWallet::GetCredit(const CTransaction& tx, const isminefilter& filter) const
953 for (const CTxOut& txout : tx.vout)
955 nCredit += GetCredit(txout, filter);
956 if (!MoneyRange(nCredit))
957 throw std::runtime_error("CWallet::GetCredit() : value out of range");
962 int64_t CWallet::GetChange(const CTransaction& tx) const
965 for (const CTxOut& txout : tx.vout)
967 nChange += GetChange(txout);
968 if (!MoneyRange(nChange))
969 throw std::runtime_error("CWallet::GetChange() : value out of range");
974 int64_t CWalletTx::GetTxTime() const
979 int CWalletTx::GetRequestCount() const
981 // Returns -1 if it wasn't being tracked
984 LOCK(pwallet->cs_wallet);
985 if (IsCoinBase() || IsCoinStake())
990 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
991 if (mi != pwallet->mapRequestCount.end())
992 nRequests = (*mi).second;
997 // Did anyone request this transaction?
998 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(GetHash());
999 if (mi != pwallet->mapRequestCount.end())
1001 nRequests = (*mi).second;
1003 // How about the block it's in?
1004 if (nRequests == 0 && hashBlock != 0)
1006 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
1007 if (mi != pwallet->mapRequestCount.end())
1008 nRequests = (*mi).second;
1010 nRequests = 1; // If it's in someone else's block it must have got out
1018 bool CWalletTx::InMempool() const
1021 if (mempool.exists(GetHash())) {
1027 bool CWalletTx::IsTrusted() const
1029 // Quick answer in most cases
1032 int nDepth = GetDepthInMainChain();
1037 if (!fConfChange || !IsFromMe(MINE_ALL)) // using wtx's cached debit
1040 // Don't trust unconfirmed transactions from us unless they are in the mempool.
1044 // Trusted if all inputs are from us and are in the mempool:
1045 for (const CTxIn& txin : vin)
1047 // Transactions not sent by us: not trusted
1048 const CWalletTx* parent = pwallet->GetWalletTx(txin.prevout.hash);
1051 const CTxOut& parentOut = parent->vout[txin.prevout.n];
1052 if (pwallet->IsMine(parentOut) != MINE_SPENDABLE)
1058 int64_t CWalletTx::GetDebit(const isminefilter& filter) const
1064 if (filter & MINE_SPENDABLE)
1067 nDebit += nDebitCached;
1070 nDebitCached = pwallet->GetDebit(*this, MINE_SPENDABLE);
1071 fDebitCached = true;
1072 nDebit += nDebitCached;
1075 if (filter & MINE_WATCH_ONLY)
1077 if (fWatchDebitCached)
1078 nDebit += nWatchDebitCached;
1081 nWatchDebitCached = pwallet->GetDebit(*this, MINE_WATCH_ONLY);
1082 fWatchDebitCached = true;
1083 nDebit += nWatchDebitCached;
1089 int64_t CWalletTx::GetCredit(const isminefilter& filter) const
1091 // Must wait until coinbase is safely deep enough in the chain before valuing it
1092 if ((IsCoinBase() || IsCoinStake()) && GetBlocksToMaturity() > 0)
1096 if (filter & MINE_SPENDABLE)
1098 // GetBalance can assume transactions in mapWallet won't change
1100 credit += nCreditCached;
1103 nCreditCached = pwallet->GetCredit(*this, MINE_SPENDABLE);
1104 fCreditCached = true;
1105 credit += nCreditCached;
1108 if (filter & MINE_WATCH_ONLY)
1110 if (fWatchCreditCached)
1111 credit += nWatchCreditCached;
1114 nWatchCreditCached = pwallet->GetCredit(*this, MINE_WATCH_ONLY);
1115 fWatchCreditCached = true;
1116 credit += nWatchCreditCached;
1122 int64_t CWalletTx::GetImmatureCredit(bool fUseCache) const
1124 if (IsCoinBase() && GetBlocksToMaturity() > 0 && IsInMainChain())
1126 if (fUseCache && fImmatureCreditCached)
1127 return nImmatureCreditCached;
1128 nImmatureCreditCached = pwallet->GetCredit(*this, MINE_SPENDABLE);
1129 fImmatureCreditCached = true;
1130 return nImmatureCreditCached;
1136 int64_t CWalletTx::GetImmatureWatchOnlyCredit(bool fUseCache) const
1138 if (IsCoinBase() && GetBlocksToMaturity() > 0 && IsInMainChain())
1140 if (fUseCache && fImmatureWatchCreditCached)
1141 return nImmatureWatchCreditCached;
1142 nImmatureWatchCreditCached = pwallet->GetCredit(*this, MINE_WATCH_ONLY);
1143 fImmatureWatchCreditCached = true;
1144 return nImmatureWatchCreditCached;
1151 int64_t CWalletTx::GetAvailableCredit(bool fUseCache) const
1153 // Must wait until coinbase is safely deep enough in the chain before valuing it
1154 if ((IsCoinBase() || IsCoinStake()) && GetBlocksToMaturity() > 0)
1158 if (fAvailableCreditCached)
1159 return nAvailableCreditCached;
1162 int64_t nCredit = 0;
1163 for (unsigned int i = 0; i < vout.size(); i++)
1167 const CTxOut &txout = vout[i];
1168 nCredit += pwallet->GetCredit(txout, MINE_SPENDABLE);
1169 if (!MoneyRange(nCredit))
1170 throw std::runtime_error("CWalletTx::GetAvailableCredit() : value out of range");
1174 nAvailableCreditCached = nCredit;
1175 fAvailableCreditCached = true;
1180 int64_t CWalletTx::GetAvailableWatchCredit(bool fUseCache) const
1182 // Must wait until coinbase is safely deep enough in the chain before valuing it
1183 if ((IsCoinBase() || IsCoinStake()) && GetBlocksToMaturity() > 0)
1187 if (fAvailableWatchCreditCached)
1188 return nAvailableWatchCreditCached;
1191 int64_t nCredit = 0;
1192 for (unsigned int i = 0; i < vout.size(); i++)
1196 const CTxOut &txout = vout[i];
1197 nCredit += pwallet->GetCredit(txout, MINE_WATCH_ONLY);
1198 if (!MoneyRange(nCredit))
1199 throw std::runtime_error("CWalletTx::GetAvailableCredit() : value out of range");
1203 nAvailableWatchCreditCached = nCredit;
1204 fAvailableWatchCreditCached = true;
1209 int64_t CWalletTx::GetChange() const
1212 return nChangeCached;
1213 nChangeCached = pwallet->GetChange(*this);
1214 fChangeCached = true;
1215 return nChangeCached;
1218 void CWalletTx::GetAmounts(int64_t& nGeneratedImmature, int64_t& nGeneratedMature, list<pair<CBitcoinAddress, int64_t> >& listReceived,
1219 list<pair<CBitcoinAddress, int64_t> >& listSent, int64_t& nFee, string& strSentAccount, const isminefilter& filter) const
1221 nGeneratedImmature = nGeneratedMature = nFee = 0;
1222 listReceived.clear();
1224 strSentAccount = strFromAccount;
1226 if (IsCoinBase() || IsCoinStake())
1228 if (GetBlocksToMaturity() > 0)
1229 nGeneratedImmature = pwallet->GetCredit(*this, filter);
1231 nGeneratedMature = GetCredit(filter);
1236 int64_t nDebit = GetDebit(filter);
1237 if (nDebit > 0) // debit>0 means we signed/sent this transaction
1239 int64_t nValueOut = GetValueOut();
1240 nFee = nDebit - nValueOut;
1244 for (const CTxOut& txout : vout)
1246 isminetype fIsMine = pwallet->IsMine(txout);
1247 // Only need to handle txouts if AT LEAST one of these is true:
1248 // 1) they debit from us (sent)
1249 // 2) the output is to us (received)
1252 // Don't report 'change' txouts
1253 if (pwallet->IsChange(txout))
1256 else if (!(fIsMine & filter))
1259 // In either case, we need to get the destination address
1260 CBitcoinAddress address;
1261 if (!ExtractAddress(*pwallet, txout.scriptPubKey, address))
1263 printf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
1264 this->GetHash().ToString().c_str());
1265 address = CBitcoinAddress();
1268 // If we are debited by the transaction, add the output as a "sent" entry
1270 listSent.push_back(make_pair(address, txout.nValue));
1272 // If we are receiving the output, add it as a "received" entry
1273 if (fIsMine & filter)
1274 listReceived.push_back(make_pair(address, txout.nValue));
1279 void CWalletTx::GetAccountAmounts(const string& strAccount, int64_t& nGenerated, int64_t& nReceived,
1280 int64_t& nSent, int64_t& nFee, const isminefilter& filter) const
1282 nGenerated = nReceived = nSent = nFee = 0;
1284 int64_t allGeneratedImmature, allGeneratedMature, allFee;
1285 allGeneratedImmature = allGeneratedMature = allFee = 0;
1286 string strSentAccount;
1287 list<pair<CBitcoinAddress, int64_t> > listReceived;
1288 list<pair<CBitcoinAddress, int64_t> > listSent;
1289 GetAmounts(allGeneratedImmature, allGeneratedMature, listReceived, listSent, allFee, strSentAccount, filter);
1291 if (strAccount.empty())
1292 nGenerated = allGeneratedMature;
1293 if (strAccount == strSentAccount)
1295 for (const auto& s : listSent)
1300 LOCK(pwallet->cs_wallet);
1301 for (const auto& r : listReceived)
1303 if (pwallet->mapAddressBook.count(r.first))
1305 map<CBitcoinAddress, string>::const_iterator mi = pwallet->mapAddressBook.find(r.first);
1306 if (mi != pwallet->mapAddressBook.end() && (*mi).second == strAccount)
1307 nReceived += r.second;
1309 else if (strAccount.empty())
1311 nReceived += r.second;
1317 void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
1321 const int COPY_DEPTH = 3;
1322 if (SetMerkleBranch() < COPY_DEPTH)
1324 vector<uint256> vWorkQueue;
1325 for (const CTxIn& txin : vin)
1326 vWorkQueue.push_back(txin.prevout.hash);
1328 // This critsect is OK because txdb is already open
1330 LOCK(pwallet->cs_wallet);
1331 map<uint256, const CMerkleTx*> mapWalletPrev;
1332 set<uint256> setAlreadyDone;
1333 for (unsigned int i = 0; i < vWorkQueue.size(); i++)
1335 uint256 hash = vWorkQueue[i];
1336 if (setAlreadyDone.count(hash))
1338 setAlreadyDone.insert(hash);
1341 map<uint256, CWalletTx>::const_iterator mi = pwallet->mapWallet.find(hash);
1342 if (mi != pwallet->mapWallet.end())
1345 for (const CMerkleTx& txWalletPrev : (*mi).second.vtxPrev)
1346 mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
1348 else if (mapWalletPrev.count(hash))
1350 tx = *mapWalletPrev[hash];
1352 else if (!fClient && txdb.ReadDiskTx(hash, tx))
1358 printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
1362 int nDepth = tx.SetMerkleBranch();
1363 vtxPrev.push_back(tx);
1365 if (nDepth < COPY_DEPTH)
1367 for (const CTxIn& txin : tx.vin)
1368 vWorkQueue.push_back(txin.prevout.hash);
1374 reverse(vtxPrev.begin(), vtxPrev.end());
1377 bool CWalletTx::WriteToDisk()
1379 return CWalletDB(pwallet->strWalletFile).WriteTx(GetHash(), *this);
1382 // Scan the block chain (starting in pindexStart) for transactions
1383 // from or to us. If fUpdate is true, found transactions that already
1384 // exist in the wallet will be updated.
1385 int CWallet::ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
1389 CBlockIndex* pindex = pindexStart;
1395 block.ReadFromDisk(pindex, true);
1396 for (CTransaction& tx : block.vtx)
1398 if (AddToWalletIfInvolvingMe(tx, &block, fUpdate))
1401 pindex = pindex->pnext;
1407 int CWallet::ScanForWalletTransaction(const uint256& hashTx)
1410 tx.ReadFromDisk(COutPoint(hashTx, 0));
1411 if (AddToWalletIfInvolvingMe(tx, NULL, true))
1416 void CWallet::ReacceptWalletTransactions()
1419 bool fRepeat = true;
1424 vector<CDiskTxPos> vMissingTx;
1425 for (auto& item : mapWallet)
1427 CWalletTx& wtx = item.second;
1428 if ((wtx.IsCoinBase() && wtx.IsSpent(0)) || (wtx.IsCoinStake() && wtx.IsSpent(1)))
1432 bool fUpdated = false;
1433 if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
1435 // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
1436 if (txindex.vSpent.size() != wtx.vout.size())
1438 printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %" PRIszu " != wtx.vout.size() %" PRIszu "\n", txindex.vSpent.size(), wtx.vout.size());
1441 for (unsigned int i = 0; i < txindex.vSpent.size(); i++)
1445 if (!txindex.vSpent[i].IsNull() && IsMine(wtx.vout[i]))
1449 vMissingTx.push_back(txindex.vSpent[i]);
1454 printf("ReacceptWalletTransactions found spent coin %snvc %s\n", FormatMoney(wtx.GetCredit(MINE_ALL)).c_str(), wtx.GetHash().ToString().c_str());
1461 // Re-accept any txes of ours that aren't already in a block
1462 if (!(wtx.IsCoinBase() || wtx.IsCoinStake()))
1463 wtx.AcceptWalletTransaction(txdb, false);
1466 if (!vMissingTx.empty())
1468 // TODO: optimize this to scan just part of the block chain?
1469 if (ScanForWalletTransactions(pindexGenesisBlock))
1470 fRepeat = true; // Found missing transactions: re-do re-accept.
1475 bool CWalletTx::RelayWalletTransaction(CTxDB& txdb)
1477 uint256 hash = GetHash();
1478 if (IsCoinBase() || IsCoinStake() || txdb.ContainsTx(hash) || !InMempool())
1481 for(std::vector<CMerkleTx>::const_iterator it = vtxPrev.begin(); it != vtxPrev.end(); it++)
1483 const CMerkleTx& tx = *it;
1484 uint256 hash = tx.GetHash();
1486 if (tx.IsCoinBase() || tx.IsCoinStake())
1489 if (!txdb.ContainsTx(hash))
1490 RelayTransaction((CTransaction)tx, hash);
1493 printf("Relaying wtx %s\n", hash.ToString().substr(0,10).c_str());
1494 RelayTransaction((CTransaction)*this, hash);
1498 bool CWalletTx::RelayWalletTransaction()
1501 return RelayWalletTransaction(txdb);
1504 std::vector<uint256> CWallet::ResendWalletTransactionsBefore(int64_t nTime)
1506 std::vector<uint256> result;
1509 // Sort them in chronological order
1510 map<unsigned int, CWalletTx*> mapSorted;
1511 for (auto& item : mapWallet)
1513 CWalletTx& wtx = item.second;
1514 // Don't rebroadcast if newer than nTime:
1515 if (wtx.nTimeReceived > nTime)
1517 mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
1519 for (auto& item : mapSorted)
1521 CWalletTx& wtx = *item.second;
1522 if (wtx.RelayWalletTransaction())
1523 result.push_back(wtx.GetHash());
1528 void CWallet::ResendWalletTransactions(int64_t nBestBlockTime)
1530 int64_t nNow = GetTime();
1532 // Do this infrequently and randomly to avoid giving away
1533 // that these are our transactions.
1534 if (nNow < nNextResend)
1536 bool fFirst = (nNextResend == 0);
1537 nNextResend = PoissonNextSend(nNow, 5*60);
1541 // Only do it if there's been a new block since last time
1542 if (nBestBlockTime < nLastResend)
1546 // Rebroadcast unconfirmed txes older than 5 minutes before the last
1548 std::vector<uint256> relayed = ResendWalletTransactionsBefore(nBestBlockTime - 5*60);
1549 if (!relayed.empty())
1550 printf("CWallet::ResendWalletTransactions: rebroadcast %" PRIszu " unconfirmed transactions\n", relayed.size());
1554 //////////////////////////////////////////////////////////////////////////////
1560 int64_t CWallet::GetBalance() const
1565 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1567 const CWalletTx* pcoin = &(*it).second;
1568 if (pcoin->IsTrusted())
1569 nTotal += pcoin->GetAvailableCredit();
1576 int64_t CWallet::GetWatchOnlyBalance() const
1581 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1583 const CWalletTx* pcoin = &(*it).second;
1584 if (pcoin->IsTrusted())
1585 nTotal += pcoin->GetAvailableWatchCredit();
1592 int64_t CWallet::GetUnconfirmedBalance() const
1597 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1599 const CWalletTx* pcoin = &(*it).second;
1600 if (!pcoin->IsFinal() || !pcoin->IsTrusted())
1601 nTotal += pcoin->GetAvailableCredit();
1607 int64_t CWallet::GetUnconfirmedWatchOnlyBalance() const
1612 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1614 const CWalletTx* pcoin = &(*it).second;
1615 if (!pcoin->IsFinal() || !pcoin->IsTrusted())
1616 nTotal += pcoin->GetAvailableWatchCredit();
1622 int64_t CWallet::GetImmatureBalance() const
1627 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1629 const CWalletTx* pcoin = &(*it).second;
1630 nTotal += pcoin->GetImmatureCredit();
1636 int64_t CWallet::GetImmatureWatchOnlyBalance() const
1641 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1643 const CWalletTx* pcoin = &(*it).second;
1644 nTotal += pcoin->GetImmatureWatchOnlyCredit();
1650 // populate vCoins with vector of spendable COutputs
1651 void CWallet::AvailableCoins(vector<COutput>& vCoins, bool fOnlyConfirmed, const CCoinControl *coinControl) const
1657 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1659 const CWalletTx* pcoin = &(*it).second;
1661 if (!pcoin->IsFinal())
1664 if (fOnlyConfirmed && !pcoin->IsTrusted())
1667 if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
1670 if(pcoin->IsCoinStake() && pcoin->GetBlocksToMaturity() > 0)
1673 for (unsigned int i = 0; i < pcoin->vout.size(); i++) {
1674 isminetype mine = IsMine(pcoin->vout[i]);
1675 if (!(pcoin->IsSpent(i)) && mine != MINE_NO &&
1676 pcoin->vout[i].nValue >= nMinimumInputValue &&
1677 (!coinControl || !coinControl->HasSelected() || coinControl->IsSelected((*it).first, i)))
1679 vCoins.push_back(COutput(pcoin, i, pcoin->GetDepthInMainChain(), mine == MINE_SPENDABLE));
1686 void CWallet::AvailableCoinsMinConf(vector<COutput>& vCoins, int nConf, int64_t nMinValue, int64_t nMaxValue) const
1692 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1694 const CWalletTx* pcoin = &(*it).second;
1696 if (!pcoin->IsFinal())
1699 if(pcoin->GetDepthInMainChain() < nConf)
1702 for (unsigned int i = 0; i < pcoin->vout.size(); i++) {
1703 isminetype mine = IsMine(pcoin->vout[i]);
1705 // ignore coin if it was already spent or we don't own it
1706 if (pcoin->IsSpent(i) || mine == MINE_NO)
1709 // if coin value is between required limits then add new item to vector
1710 if (pcoin->vout[i].nValue >= nMinValue && pcoin->vout[i].nValue < nMaxValue)
1711 vCoins.push_back(COutput(pcoin, i, pcoin->GetDepthInMainChain(), mine == MINE_SPENDABLE));
1717 static void ApproximateBestSubset(vector<pair<int64_t, pair<const CWalletTx*,unsigned int> > >vValue, int64_t nTotalLower, int64_t nTargetValue,
1718 vector<char>& vfBest, int64_t& nBest, int iterations = 1000)
1720 vector<char> vfIncluded;
1722 vfBest.assign(vValue.size(), true);
1723 nBest = nTotalLower;
1725 for (int nRep = 0; nRep < iterations && nBest != nTargetValue; nRep++)
1727 vfIncluded.assign(vValue.size(), false);
1729 bool fReachedTarget = false;
1730 for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
1732 for (unsigned int i = 0; i < vValue.size(); i++)
1734 if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
1736 nTotal += vValue[i].first;
1737 vfIncluded[i] = true;
1738 if (nTotal >= nTargetValue)
1740 fReachedTarget = true;
1744 vfBest = vfIncluded;
1746 nTotal -= vValue[i].first;
1747 vfIncluded[i] = false;
1755 int64_t CWallet::GetStake() const
1759 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1761 const CWalletTx* pcoin = &(*it).second;
1762 if (pcoin->IsCoinStake() && pcoin->GetBlocksToMaturity() > 0 && pcoin->GetDepthInMainChain() > 0)
1763 nTotal += CWallet::GetCredit(*pcoin, MINE_ALL);
1768 int64_t CWallet::GetWatchOnlyStake() const
1772 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1774 const CWalletTx* pcoin = &(*it).second;
1775 if (pcoin->IsCoinStake() && pcoin->GetBlocksToMaturity() > 0 && pcoin->GetDepthInMainChain() > 0)
1776 nTotal += CWallet::GetCredit(*pcoin, MINE_WATCH_ONLY);
1781 int64_t CWallet::GetNewMint() const
1785 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1787 const CWalletTx* pcoin = &(*it).second;
1788 if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0 && pcoin->GetDepthInMainChain() > 0)
1789 nTotal += CWallet::GetCredit(*pcoin, MINE_ALL);
1794 int64_t CWallet::GetWatchOnlyNewMint() const
1798 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1800 const CWalletTx* pcoin = &(*it).second;
1801 if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0 && pcoin->GetDepthInMainChain() > 0)
1802 nTotal += CWallet::GetCredit(*pcoin, MINE_WATCH_ONLY);
1807 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
1809 setCoinsRet.clear();
1812 // List of values less than target
1813 pair<int64_t, pair<const CWalletTx*,unsigned int> > coinLowestLarger;
1814 coinLowestLarger.first = std::numeric_limits<int64_t>::max();
1815 coinLowestLarger.second.first = NULL;
1816 vector<pair<int64_t, pair<const CWalletTx*,unsigned int> > > vValue;
1817 int64_t nTotalLower = 0;
1819 std::random_device rd;
1820 std::mt19937 g(rd());
1821 shuffle(vCoins.begin(), vCoins.end(), g);
1823 for (const COutput &output : vCoins)
1825 if (!output.fSpendable)
1828 const CWalletTx *pcoin = output.tx;
1830 if (output.nDepth < (pcoin->IsFromMe(MINE_ALL) ? nConfMine : nConfTheirs))
1835 // Follow the timestamp rules
1836 if (pcoin->nTime > nSpendTime)
1839 int64_t n = pcoin->vout[i].nValue;
1841 pair<int64_t,pair<const CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin, i));
1843 if (n == nTargetValue)
1845 setCoinsRet.insert(coin.second);
1846 nValueRet += coin.first;
1849 else if (n < nTargetValue + CENT)
1851 vValue.push_back(coin);
1854 else if (n < coinLowestLarger.first)
1856 coinLowestLarger = coin;
1860 if (nTotalLower == nTargetValue)
1862 for (unsigned int i = 0; i < vValue.size(); ++i)
1864 setCoinsRet.insert(vValue[i].second);
1865 nValueRet += vValue[i].first;
1870 if (nTotalLower < nTargetValue)
1872 if (coinLowestLarger.second.first == NULL)
1874 setCoinsRet.insert(coinLowestLarger.second);
1875 nValueRet += coinLowestLarger.first;
1879 // Solve subset sum by stochastic approximation
1880 std::sort(vValue.begin(), vValue.end(), CompareValueOnly());
1881 std::reverse(vValue.begin(), vValue.end());
1882 vector<char> vfBest;
1885 ApproximateBestSubset(vValue, nTotalLower, nTargetValue, vfBest, nBest, 1000);
1886 if (nBest != nTargetValue && nTotalLower >= nTargetValue + CENT)
1887 ApproximateBestSubset(vValue, nTotalLower, nTargetValue + CENT, vfBest, nBest, 1000);
1889 // If we have a bigger coin and (either the stochastic approximation didn't find a good solution,
1890 // or the next bigger coin is closer), return the bigger coin
1891 if (coinLowestLarger.second.first &&
1892 ((nBest != nTargetValue && nBest < nTargetValue + CENT) || coinLowestLarger.first <= nBest))
1894 setCoinsRet.insert(coinLowestLarger.second);
1895 nValueRet += coinLowestLarger.first;
1898 for (unsigned int i = 0; i < vValue.size(); i++)
1901 setCoinsRet.insert(vValue[i].second);
1902 nValueRet += vValue[i].first;
1905 if (fDebug && GetBoolArg("-printpriority"))
1908 printf("SelectCoins() best subset: ");
1909 for (unsigned int i = 0; i < vValue.size(); i++)
1911 printf("%s ", FormatMoney(vValue[i].first).c_str());
1912 printf("total %s\n", FormatMoney(nBest).c_str());
1919 bool CWallet::SelectCoins(int64_t nTargetValue, unsigned int nSpendTime, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64_t& nValueRet, const CCoinControl* coinControl) const
1921 vector<COutput> vCoins;
1922 AvailableCoins(vCoins, true, coinControl);
1924 // coin control -> return all selected outputs (we want all selected to go into the transaction for sure)
1925 if (coinControl && coinControl->HasSelected())
1927 for (const COutput& out : vCoins)
1931 nValueRet += out.tx->vout[out.i].nValue;
1932 setCoinsRet.insert(make_pair(out.tx, out.i));
1934 return (nValueRet >= nTargetValue);
1937 return (SelectCoinsMinConf(nTargetValue, nSpendTime, 1, 6, vCoins, setCoinsRet, nValueRet) ||
1938 SelectCoinsMinConf(nTargetValue, nSpendTime, 1, 1, vCoins, setCoinsRet, nValueRet) ||
1939 SelectCoinsMinConf(nTargetValue, nSpendTime, 0, 1, vCoins, setCoinsRet, nValueRet));
1942 // Select some coins without random shuffle or best subset approximation
1943 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
1945 vector<COutput> vCoins;
1946 AvailableCoinsMinConf(vCoins, nMinConf, nMinValue, nMaxValue);
1948 setCoinsRet.clear();
1951 for (COutput output : vCoins)
1953 if(!output.fSpendable)
1955 const CWalletTx *pcoin = output.tx;
1958 // Ignore immature coins
1959 if (pcoin->GetBlocksToMaturity() > 0)
1962 // Stop if we've chosen enough inputs
1963 if (nValueRet >= nTargetValue)
1966 // Follow the timestamp rules
1967 if (pcoin->nTime > nSpendTime)
1970 int64_t n = pcoin->vout[i].nValue;
1972 pair<int64_t,pair<const CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin, i));
1974 if (n >= nTargetValue)
1976 // If input value is greater or equal to target then simply insert
1977 // it into the current subset and exit
1978 setCoinsRet.insert(coin.second);
1979 nValueRet += coin.first;
1982 else if (n < nTargetValue + CENT)
1984 setCoinsRet.insert(coin.second);
1985 nValueRet += coin.first;
1992 bool CWallet::CreateTransaction(const vector<pair<CScript, int64_t> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64_t& nFeeRet, const CCoinControl* coinControl)
1995 for (const auto& s : vecSend)
2001 if (vecSend.empty() || nValue < 0)
2004 wtxNew.BindWallet(this);
2007 LOCK2(cs_main, cs_wallet);
2008 // txdb must be opened before the mapWallet lock
2011 nFeeRet = nTransactionFee;
2015 wtxNew.vout.clear();
2016 wtxNew.fFromMe = true;
2018 int64_t nTotalValue = nValue + nFeeRet;
2019 double dPriority = 0;
2020 // vouts to the payees
2021 for (const auto& s : vecSend)
2022 wtxNew.vout.push_back(CTxOut(s.second, s.first));
2024 // Choose coins to use
2025 set<pair<const CWalletTx*,unsigned int> > setCoins;
2026 int64_t nValueIn = 0;
2027 if (!SelectCoins(nTotalValue, wtxNew.nTime, setCoins, nValueIn, coinControl))
2029 for (auto pcoin : setCoins)
2031 int64_t nCredit = pcoin.first->vout[pcoin.second].nValue;
2032 dPriority += (double)nCredit * pcoin.first->GetDepthInMainChain();
2035 int64_t nChange = nValueIn - nValue - nFeeRet;
2038 // Fill a vout to ourself
2039 // TODO: pass in scriptChange instead of reservekey so
2040 // change transaction isn't always pay-to-bitcoin-address
2041 CScript scriptChange;
2043 // coin control: send change to custom address
2044 if (coinControl && coinControl->destChange.IsValid())
2045 scriptChange.SetAddress(coinControl->destChange);
2047 // no coin control: send change to newly generated address
2050 // Note: We use a new key here to keep it from being obvious which side is the change.
2051 // The drawback is that by not reusing a previous key, the change may be lost if a
2052 // backup is restored, if the backup doesn't have the new private key for the change.
2053 // If we reused the old key, it would be possible to add code to look for and
2054 // rediscover unknown transactions that were written with keys of ours to recover
2055 // post-backup change.
2057 // Reserve a new key pair from key pool
2058 CPubKey vchPubKey = reservekey.GetReservedKey();
2060 scriptChange.SetDestination(vchPubKey.GetID());
2063 // Insert change txn at random position:
2064 vector<CTxOut>::iterator position = wtxNew.vout.begin()+GetRandInt(wtxNew.vout.size());
2065 wtxNew.vout.insert(position, CTxOut(nChange, scriptChange));
2068 reservekey.ReturnKey();
2071 for (const auto& coin : setCoins)
2072 wtxNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second));
2076 for (const auto& coin : setCoins)
2077 if (!SignSignature(*this, *coin.first, wtxNew, nIn++))
2081 unsigned int nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK, PROTOCOL_VERSION);
2082 if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
2084 dPriority /= nBytes;
2086 // Check that enough fee is included
2087 bool fAllowFree = CTransaction::AllowFree(dPriority);
2088 int64_t nPayFee = nTransactionFee * (1 + (int64_t)nBytes / 1000);
2089 int64_t nMinFee = wtxNew.GetMinFee(1, fAllowFree, GMF_SEND, nBytes);
2091 if (nFeeRet < max(nPayFee, nMinFee))
2093 nFeeRet = max(nPayFee, nMinFee);
2097 // Fill vtxPrev by copying from previous transactions vtxPrev
2098 wtxNew.AddSupportingTransactions(txdb);
2099 wtxNew.fTimeReceivedIsTxTime = true;
2108 bool CWallet::CreateTransaction(CScript scriptPubKey, int64_t nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64_t& nFeeRet, const CCoinControl* coinControl)
2110 vector< pair<CScript, int64_t> > vecSend;
2111 vecSend.push_back(make_pair(scriptPubKey, nValue));
2112 return CreateTransaction(vecSend, wtxNew, reservekey, nFeeRet, coinControl);
2115 void CWallet::GetStakeWeightFromValue(const int64_t& nTime, const int64_t& nValue, uint64_t& nWeight)
2117 int64_t nTimeWeight = GetWeight(nTime, GetTime());
2119 // If time weight is lower or equal to zero then weight is zero.
2120 if (nTimeWeight <= 0)
2126 CBigNum bnCoinDayWeight = CBigNum(nValue) * nTimeWeight / COIN / nOneDay;
2127 nWeight = bnCoinDayWeight.getuint64();
2130 bool CWallet::MergeCoins(const int64_t& nAmount, const int64_t& nMinValue, const int64_t& nOutputValue, list<uint256>& listMerged)
2132 int64_t nBalance = GetBalance();
2134 if (nAmount > nBalance)
2138 int64_t nValueIn = 0;
2139 set<pair<const CWalletTx*,unsigned int> > setCoins;
2141 // Simple coins selection - no randomization
2142 if (!SelectCoinsSimple(nAmount, nMinValue, nOutputValue, GetTime(), 1, setCoins, nValueIn))
2145 if (setCoins.empty())
2149 vector<const CWalletTx*> vwtxPrev;
2151 // Reserve a new key pair from key pool
2152 CReserveKey reservekey(this);
2153 CPubKey vchPubKey = reservekey.GetReservedKey();
2156 CScript scriptOutput;
2157 scriptOutput.SetDestination(vchPubKey.GetID());
2160 wtxNew.vout.push_back(CTxOut(0, scriptOutput));
2163 for (auto pcoin : setCoins)
2165 int64_t nCredit = pcoin.first->vout[pcoin.second].nValue;
2167 // Add current coin to inputs list and add its credit to transaction output
2168 wtxNew.vin.push_back(CTxIn(pcoin.first->GetHash(), pcoin.second));
2169 wtxNew.vout[0].nValue += nCredit;
2170 vwtxPrev.push_back(pcoin.first);
2173 // Replaced with estimation for performance purposes
2175 for (unsigned int i = 0; i < wtxNew.vin.size(); i++) {
2176 const CWalletTx *txin = vwtxPrev[i];
2178 // Sign scripts to get actual transaction size for fee calculation
2179 if (!SignSignature(*this, *txin, wtxNew, i))
2184 // Assuming that average scriptsig size is 110 bytes
2185 int64_t nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK, PROTOCOL_VERSION) + wtxNew.vin.size() * 110;
2186 dWeight += (double)nCredit * pcoin.first->GetDepthInMainChain();
2188 double dFinalPriority = dWeight /= nBytes;
2189 bool fAllowFree = CTransaction::AllowFree(dFinalPriority);
2191 // Get actual transaction fee according to its estimated size and priority
2192 int64_t nMinFee = wtxNew.GetMinFee(1, fAllowFree, GMF_SEND, nBytes);
2194 // Prepare transaction for commit if sum is enough ot its size is too big
2195 if (nBytes >= MAX_BLOCK_SIZE_GEN/6 || wtxNew.vout[0].nValue >= nOutputValue)
2197 wtxNew.vout[0].nValue -= nMinFee; // Set actual fee
2199 for (unsigned int i = 0; i < wtxNew.vin.size(); i++) {
2200 const CWalletTx *txin = vwtxPrev[i];
2203 if (!SignSignature(*this, *txin, wtxNew, i))
2207 // Try to commit, return false on failure
2208 if (!CommitTransaction(wtxNew, reservekey))
2211 listMerged.push_back(wtxNew.GetHash()); // Add to hashes list
2213 dWeight = 0; // Reset all temporary values
2216 wtxNew.vout.push_back(CTxOut(0, scriptOutput));
2220 // Create transactions if there are some unhandled coins left
2221 if (wtxNew.vout[0].nValue > 0) {
2222 int64_t nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK, PROTOCOL_VERSION) + wtxNew.vin.size() * 110;
2224 double dFinalPriority = dWeight / nBytes;
2225 bool fAllowFree = CTransaction::AllowFree(dFinalPriority);
2227 // Get actual transaction fee according to its size and priority
2228 int64_t nMinFee = wtxNew.GetMinFee(1, fAllowFree, GMF_SEND, nBytes);
2230 wtxNew.vout[0].nValue -= nMinFee; // Set actual fee
2232 if (wtxNew.vout[0].nValue <= 0)
2235 for (unsigned int i = 0; i < wtxNew.vin.size(); i++) {
2236 const CWalletTx *txin = vwtxPrev[i];
2238 // Sign all scripts again
2239 if (!SignSignature(*this, *txin, wtxNew, i))
2243 // Try to commit, return false on failure
2244 if (!CommitTransaction(wtxNew, reservekey))
2247 listMerged.push_back(wtxNew.GetHash()); // Add to hashes list
2253 bool CWallet::CreateCoinStake(uint256 &hashTx, uint32_t nOut, uint32_t nGenerationTime, uint32_t nBits, CTransaction &txNew, CKey& key)
2256 if (!GetTransaction(hashTx, wtx))
2257 return error("Transaction %s is not found\n", hashTx.GetHex().c_str());
2259 vector<valtype> vSolutions;
2260 txnouttype whichType;
2261 CScript scriptPubKeyOut;
2262 CScript scriptPubKeyKernel = wtx.vout[nOut].scriptPubKey;
2263 if (!Solver(scriptPubKeyKernel, whichType, vSolutions))
2264 return error("CreateCoinStake : failed to parse kernel\n");
2266 if (fDebug && GetBoolArg("-printcoinstake"))
2267 printf("CreateCoinStake : parsed kernel type=%d\n", whichType);
2269 if (whichType != TX_PUBKEY && whichType != TX_PUBKEYHASH)
2270 return error("CreateCoinStake : no support for kernel type=%d\n", whichType);
2272 if (whichType == TX_PUBKEYHASH) // pay to address type
2274 // convert to pay to public key type
2275 if (!GetKey(uint160(vSolutions[0]), key))
2276 return error("CreateCoinStake : failed to get key for kernel type=%d\n", whichType);
2278 scriptPubKeyOut << key.GetPubKey() << OP_CHECKSIG;
2280 if (whichType == TX_PUBKEY)
2282 valtype& vchPubKey = vSolutions[0];
2283 if (!GetKey(Hash160(vchPubKey), key))
2284 return error("CreateCoinStake : failed to get key for kernel type=%d\n", whichType);
2285 if (key.GetPubKey() != vchPubKey)
2286 return error("CreateCoinStake : invalid key for kernel type=%d\n", whichType); // keys mismatch
2287 scriptPubKeyOut = scriptPubKeyKernel;
2290 // The following combine threshold is important to security
2291 // Should not be adjusted if you don't understand the consequences
2292 int64_t nCombineThreshold = GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits) / 3;
2294 int64_t nBalance = GetBalance();
2295 int64_t nCredit = wtx.vout[nOut].nValue;
2300 // List of constake dependencies
2301 vector<const CWalletTx*> vwtxPrev;
2302 vwtxPrev.push_back(&wtx);
2304 // Set generation time, and kernel input
2305 txNew.nTime = nGenerationTime;
2306 txNew.vin.push_back(CTxIn(hashTx, nOut));
2308 // Mark coin stake transaction with empty vout[0]
2309 CScript scriptEmpty;
2310 scriptEmpty.clear();
2311 txNew.vout.push_back(CTxOut(0, scriptEmpty));
2313 if (fDebug && GetBoolArg("-printcoinstake"))
2314 printf("CreateCoinStake : added kernel type=%d\n", whichType);
2316 int64_t nValueIn = 0;
2318 if (!SelectCoinsSimple(nBalance - nReserveBalance, MIN_TX_FEE, MAX_MONEY, nGenerationTime, nCoinbaseMaturity * 10, setCoins, nValueIn))
2321 if (setCoins.empty())
2324 bool fDontSplitCoins = false;
2325 if (GetWeight((int64_t)wtx.nTime, (int64_t)nGenerationTime) == nStakeMaxAge)
2327 // Only one output for old kernel inputs
2328 txNew.vout.push_back(CTxOut(0, scriptPubKeyOut));
2330 // Iterate through set of (wtx*, nout) in order to find some additional inputs for our new coinstake transaction.
2332 // * Value is higher than 0.01 NVC;
2333 // * Only add inputs of the same key/address as kernel;
2334 // * Input hash and kernel parent hash should be different.
2335 for(CoinsSet::iterator pcoin = setCoins.begin(); pcoin != setCoins.end(); pcoin++)
2337 // Stop adding more inputs if already too many inputs
2338 if (txNew.vin.size() >= 100)
2340 // Stop adding more inputs if value is already pretty significant
2341 if (nCredit > nCombineThreshold)
2343 // Stop adding inputs if reached reserve limit
2344 if (nCredit + pcoin->first->vout[pcoin->second].nValue > nBalance - nReserveBalance)
2347 int64_t nTimeWeight = GetWeight((int64_t)pcoin->first->nTime, (int64_t)nGenerationTime);
2349 // Do not add input that is still too young
2350 if (nTimeWeight < nStakeMaxAge)
2352 // Do not add input if key/address is not the same as kernel
2353 if (pcoin->first->vout[pcoin->second].scriptPubKey != scriptPubKeyKernel && pcoin->first->vout[pcoin->second].scriptPubKey != txNew.vout[1].scriptPubKey)
2355 // Do not add input if parents are the same
2356 if (pcoin->first->GetHash() != txNew.vin[0].prevout.hash)
2358 // Do not add additional significant input
2359 if (pcoin->first->vout[pcoin->second].nValue > nCombineThreshold)
2362 txNew.vin.push_back(CTxIn(pcoin->first->GetHash(), pcoin->second));
2363 nCredit += pcoin->first->vout[pcoin->second].nValue;
2364 vwtxPrev.push_back(pcoin->first);
2367 fDontSplitCoins = true;
2371 int64_t nSplitThreshold = GetArg("-splitthreshold", nCombineThreshold);
2373 if (fDebug && GetBoolArg("-printcoinstake"))
2374 printf("CreateCoinStake : nSplitThreshold=%" PRId64 "\n", nSplitThreshold);
2376 if (nCredit > nSplitThreshold)
2378 // Split stake input if credit is lower than combine threshold and maximum weight isn't reached yet
2379 txNew.vout.push_back(CTxOut(0, scriptPubKeyOut));
2380 txNew.vout.push_back(CTxOut(0, scriptPubKeyOut));
2382 if (fDebug && GetBoolArg("-printcoinstake"))
2383 printf("CreateCoinStake : splitting coinstake\n");
2387 txNew.vout.push_back(CTxOut(0, scriptPubKeyOut));
2388 fDontSplitCoins = true;
2392 // Calculate coin age reward
2395 if (!txNew.GetCoinAge(txdb, nCoinAge))
2396 return error("CreateCoinStake : failed to calculate coin age\n");
2397 nCredit += GetProofOfStakeReward(nCoinAge, nBits, nGenerationTime);
2399 int64_t nMinFee = 0;
2402 // Set output amount
2403 if (fDontSplitCoins)
2404 txNew.vout[1].nValue = nCredit - nMinFee;
2407 txNew.vout[1].nValue = ((nCredit - nMinFee) / 2 / CENT) * CENT;
2408 txNew.vout[2].nValue = nCredit - nMinFee - txNew.vout[1].nValue;
2413 for (const CWalletTx* pcoin : vwtxPrev)
2415 if (!SignSignature(*this, *pcoin, txNew, nIn++))
2416 return error("CreateCoinStake : failed to sign coinstake\n");
2420 unsigned int nBytes = ::GetSerializeSize(txNew, SER_NETWORK, PROTOCOL_VERSION);
2421 if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
2422 return error("CreateCoinStake : exceeded coinstake size limit\n");
2424 // Check enough fee is paid
2425 if (nMinFee < txNew.GetMinFee(1, false, GMF_BLOCK, nBytes) - CENT)
2427 nMinFee = txNew.GetMinFee(1, false, GMF_BLOCK, nBytes) - CENT;
2428 continue; // try signing again
2432 if (fDebug && GetBoolArg("-printfee"))
2433 printf("CreateCoinStake : fee for coinstake %s\n", FormatMoney(nMinFee).c_str());
2438 // Successfully created coinstake
2442 // Call after CreateTransaction unless you want to abort
2443 bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
2446 printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
2448 // Track how many getdata requests our transaction gets
2449 mapRequestCount[wtxNew.GetHash()] = 0;
2451 // Try to broadcast before saving
2452 if (!wtxNew.AcceptToMemoryPool())
2454 // This must not fail. The transaction has already been signed.
2455 printf("CommitTransaction() : Error: Transaction not valid");
2459 wtxNew.RelayWalletTransaction();
2462 LOCK2(cs_main, cs_wallet);
2464 // This is only to keep the database open to defeat the auto-flush for the
2465 // duration of this scope. This is the only place where this optimization
2466 // maybe makes sense; please don't do it anywhere else.
2467 CWalletDB* pwalletdb = fFileBacked ? new CWalletDB(strWalletFile,"r") : NULL;
2469 // Take key pair from key pool so it won't be used again
2470 reservekey.KeepKey();
2472 // Add tx to wallet, because if it has change it's also ours,
2473 // otherwise just for transaction history.
2474 AddToWallet(wtxNew);
2476 // Mark old coins as spent
2477 for (const CTxIn& txin : wtxNew.vin)
2479 CWalletTx &coin = mapWallet[txin.prevout.hash];
2480 coin.BindWallet(this);
2481 coin.MarkSpent(txin.prevout.n);
2483 NotifyTransactionChanged(this, coin.GetHash(), CT_UPDATED);
2484 vMintingWalletUpdated.push_back(coin.GetHash());
2497 string CWallet::SendMoney(CScript scriptPubKey, int64_t nValue, CWalletTx& wtxNew, bool fAskFee)
2501 return _("Invalid amount");
2502 if (nValue + nTransactionFee > GetBalance())
2503 return _("Insufficient funds");
2505 CReserveKey reservekey(this);
2506 int64_t nFeeRequired;
2510 string strError = _("Error: Wallet locked, unable to create transaction ");
2511 printf("SendMoney() : %s", strError.c_str());
2514 if (fWalletUnlockMintOnly)
2516 string strError = _("Error: Wallet unlocked for block minting only, unable to create transaction.");
2517 printf("SendMoney() : %s", strError.c_str());
2520 if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired))
2523 if (nValue + nFeeRequired > GetBalance())
2524 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());
2526 strError = _("Error: Transaction creation failed ");
2527 printf("SendMoney() : %s", strError.c_str());
2531 if (fAskFee && !uiInterface.ThreadSafeAskFee(nFeeRequired, _("Sending...")))
2534 if (!CommitTransaction(wtxNew, reservekey))
2535 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.");
2540 DBErrors CWallet::LoadWallet(bool& fFirstRunRet)
2544 fFirstRunRet = false;
2545 DBErrors nLoadWalletRet = CWalletDB(strWalletFile,"cr+").LoadWallet(this);
2546 if (nLoadWalletRet == DB_NEED_REWRITE)
2548 if (CDB::Rewrite(strWalletFile, "\x04pool"))
2551 // Note: can't top-up keypool here, because wallet is locked.
2552 // User will be prompted to unlock wallet the next operation
2553 // the requires a new key.
2557 if (nLoadWalletRet != DB_LOAD_OK)
2558 return nLoadWalletRet;
2559 fFirstRunRet = !vchDefaultKey.IsValid();
2561 NewThread(ThreadFlushWalletDB, &strWalletFile);
2565 DBErrors CWallet::ZapWalletTx()
2569 DBErrors nZapWalletTxRet = CWalletDB(strWalletFile,"cr+").ZapWalletTx(this);
2570 if (nZapWalletTxRet == DB_NEED_REWRITE)
2572 if (CDB::Rewrite(strWalletFile, "\x04pool"))
2576 // Note: can't top-up keypool here, because wallet is locked.
2577 // User will be prompted to unlock wallet the next operation
2578 // the requires a new key.
2582 if (nZapWalletTxRet != DB_LOAD_OK)
2583 return nZapWalletTxRet;
2588 bool CWallet::SetAddressBookName(const CTxDestination& address, const string& strName)
2590 return SetAddressBookName(CBitcoinAddress(address), strName);
2593 bool CWallet::SetAddressBookName(const CBitcoinAddress& address, const string& strName)
2595 std::map<CBitcoinAddress, string>::iterator mi = mapAddressBook.find(address);
2596 mapAddressBook[address] = strName;
2597 NotifyAddressBookChanged(this, address, strName, ::IsMine(*this, address) != MINE_NO, (mi == mapAddressBook.end()) ? CT_NEW : CT_UPDATED);
2600 return CWalletDB(strWalletFile).WriteName(address.ToString(), strName);
2603 bool CWallet::DelAddressBookName(const CBitcoinAddress& address)
2605 mapAddressBook.erase(address);
2606 NotifyAddressBookChanged(this, address, "", ::IsMine(*this, address) != MINE_NO, CT_DELETED);
2609 return CWalletDB(strWalletFile).EraseName(address.ToString());
2613 void CWallet::PrintWallet(const CBlock& block)
2617 if (block.IsProofOfStake() && mapWallet.count(block.vtx[1].GetHash()))
2619 CWalletTx& wtx = mapWallet[block.vtx[1].GetHash()];
2620 printf(" PoS: %d %d %" PRId64 "", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit(MINE_ALL));
2622 else if (mapWallet.count(block.vtx[0].GetHash()))
2624 CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];
2625 printf(" PoW: %d %d %" PRId64 "", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit(MINE_ALL));
2631 bool CWallet::GetTransaction(const uint256 &hashTx, CWalletTx& wtx)
2635 map<uint256, CWalletTx>::iterator mi = mapWallet.find(hashTx);
2636 if (mi != mapWallet.end())
2645 bool CWallet::SetDefaultKey(const CPubKey &vchPubKey)
2649 if (!CWalletDB(strWalletFile).WriteDefaultKey(vchPubKey))
2652 vchDefaultKey = vchPubKey;
2656 bool GetWalletFile(CWallet* pwallet, string &strWalletFileOut)
2658 if (!pwallet->fFileBacked)
2660 strWalletFileOut = pwallet->strWalletFile;
2665 // Mark old keypool keys as used,
2666 // and generate all new keys
2668 bool CWallet::NewKeyPool(unsigned int nSize)
2672 CWalletDB walletdb(strWalletFile);
2673 for (int64_t nIndex : setKeyPool)
2674 walletdb.ErasePool(nIndex);
2684 nKeys = max<uint64_t>(GetArg("-keypool", 100), 0);
2686 for (uint64_t i = 0; i < nKeys; i++)
2688 uint64_t nIndex = i+1;
2689 walletdb.WritePool(nIndex, CKeyPool(GenerateNewKey()));
2690 setKeyPool.insert(nIndex);
2692 printf("CWallet::NewKeyPool wrote %" PRIu64 " new keys\n", nKeys);
2697 bool CWallet::TopUpKeyPool(unsigned int nSize)
2705 CWalletDB walletdb(strWalletFile);
2708 uint64_t nTargetSize;
2710 nTargetSize = nSize;
2712 nTargetSize = max<uint64_t>(GetArg("-keypool", 100), 0);
2714 while (setKeyPool.size() < (nTargetSize + 1))
2717 if (!setKeyPool.empty())
2718 nEnd = *(--setKeyPool.end()) + 1;
2719 if (!walletdb.WritePool(nEnd, CKeyPool(GenerateNewKey())))
2720 throw runtime_error("TopUpKeyPool() : writing generated key failed");
2721 setKeyPool.insert(nEnd);
2722 printf("keypool added key %" PRIu64 ", size=%" PRIszu "\n", nEnd, setKeyPool.size());
2728 void CWallet::ReserveKeyFromKeyPool(int64_t& nIndex, CKeyPool& keypool)
2731 keypool.vchPubKey = CPubKey();
2738 // Get the oldest key
2739 if(setKeyPool.empty())
2742 CWalletDB walletdb(strWalletFile);
2744 nIndex = *(setKeyPool.begin());
2745 setKeyPool.erase(setKeyPool.begin());
2746 if (!walletdb.ReadPool(nIndex, keypool))
2747 throw runtime_error("ReserveKeyFromKeyPool() : read failed");
2748 if (!HaveKey(keypool.vchPubKey.GetID()))
2749 throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
2750 assert(keypool.vchPubKey.IsValid());
2751 if (fDebug && GetBoolArg("-printkeypool"))
2752 printf("keypool reserve %" PRId64 "\n", nIndex);
2756 int64_t CWallet::AddReserveKey(const CKeyPool& keypool)
2759 LOCK2(cs_main, cs_wallet);
2760 CWalletDB walletdb(strWalletFile);
2762 int64_t nIndex = 1 + *(--setKeyPool.end());
2763 if (!walletdb.WritePool(nIndex, keypool))
2764 throw runtime_error("AddReserveKey() : writing added key failed");
2765 setKeyPool.insert(nIndex);
2771 void CWallet::KeepKey(int64_t nIndex)
2773 // Remove from key pool
2776 CWalletDB walletdb(strWalletFile);
2777 walletdb.ErasePool(nIndex);
2780 printf("keypool keep %" PRId64 "\n", nIndex);
2783 void CWallet::ReturnKey(int64_t nIndex)
2785 // Return to key pool
2788 setKeyPool.insert(nIndex);
2791 printf("keypool return %" PRId64 "\n", nIndex);
2794 bool CWallet::GetKeyFromPool(CPubKey& result, bool fAllowReuse)
2800 ReserveKeyFromKeyPool(nIndex, keypool);
2803 if (fAllowReuse && vchDefaultKey.IsValid())
2805 result = vchDefaultKey;
2808 if (IsLocked()) return false;
2809 result = GenerateNewKey();
2813 result = keypool.vchPubKey;
2818 int64_t CWallet::GetOldestKeyPoolTime()
2822 ReserveKeyFromKeyPool(nIndex, keypool);
2826 return keypool.nTime;
2829 std::map<CBitcoinAddress, int64_t> CWallet::GetAddressBalances()
2831 map<CBitcoinAddress, int64_t> balances;
2835 for (auto walletEntry : mapWallet)
2837 CWalletTx *pcoin = &walletEntry.second;
2839 if (!pcoin->IsFinal() || !pcoin->IsTrusted())
2842 if ((pcoin->IsCoinBase() || pcoin->IsCoinStake()) && pcoin->GetBlocksToMaturity() > 0)
2845 int nDepth = pcoin->GetDepthInMainChain();
2846 if (nDepth < (pcoin->IsFromMe(MINE_ALL) ? 0 : 1))
2849 for (unsigned int i = 0; i < pcoin->vout.size(); i++)
2851 CBitcoinAddress addr;
2852 if (!IsMine(pcoin->vout[i]))
2854 if(!ExtractAddress(*this, pcoin->vout[i].scriptPubKey, addr))
2857 int64_t n = pcoin->IsSpent(i) ? 0 : pcoin->vout[i].nValue;
2859 if (!balances.count(addr))
2861 balances[addr] += n;
2869 set< set<CBitcoinAddress> > CWallet::GetAddressGroupings()
2871 set< set<CBitcoinAddress> > groupings;
2872 set<CBitcoinAddress> grouping;
2874 for (auto& walletEntry : mapWallet)
2876 CWalletTx *pcoin = &walletEntry.second;
2878 if (pcoin->vin.size() > 0)
2880 bool any_mine = false;
2881 // group all input addresses with each other
2882 for (CTxIn txin : pcoin->vin)
2884 CBitcoinAddress address;
2885 if(!IsMine(txin)) // If this input isn't mine, ignore it
2887 if(!ExtractAddress(*this, mapWallet[txin.prevout.hash].vout[txin.prevout.n].scriptPubKey, address))
2889 grouping.insert(address);
2893 // group change with input addresses
2896 for (CTxOut txout : pcoin->vout)
2897 if (IsChange(txout))
2899 CBitcoinAddress txoutAddr;
2900 if(!ExtractAddress(*this, txout.scriptPubKey, txoutAddr))
2902 grouping.insert(txoutAddr);
2905 if (!grouping.empty())
2907 groupings.insert(grouping);
2912 // group lone addrs by themselves
2913 for (unsigned int i = 0; i < pcoin->vout.size(); i++)
2914 if (IsMine(pcoin->vout[i]))
2916 CBitcoinAddress address;
2917 if(!ExtractAddress(*this, pcoin->vout[i].scriptPubKey, address))
2919 grouping.insert(address);
2920 groupings.insert(grouping);
2925 set< set<CBitcoinAddress>* > uniqueGroupings; // a set of pointers to groups of addresses
2926 map< CBitcoinAddress, set<CBitcoinAddress>* > setmap; // map addresses to the unique group containing it
2927 for (set<CBitcoinAddress> grouping : groupings)
2929 // make a set of all the groups hit by this new group
2930 set< set<CBitcoinAddress>* > hits;
2931 map< CBitcoinAddress, set<CBitcoinAddress>* >::iterator it;
2932 for (CBitcoinAddress address : grouping)
2933 if ((it = setmap.find(address)) != setmap.end())
2934 hits.insert((*it).second);
2936 // merge all hit groups into a new single group and delete old groups
2937 set<CBitcoinAddress>* merged = new set<CBitcoinAddress>(grouping);
2938 for (set<CBitcoinAddress>* hit : hits)
2940 merged->insert(hit->begin(), hit->end());
2941 uniqueGroupings.erase(hit);
2944 uniqueGroupings.insert(merged);
2947 for (CBitcoinAddress element : *merged)
2948 setmap[element] = merged;
2951 set< set<CBitcoinAddress> > ret;
2952 for (set<CBitcoinAddress>* uniqueGrouping : uniqueGroupings)
2954 ret.insert(*uniqueGrouping);
2955 delete uniqueGrouping;
2961 // ppcoin: check 'spent' consistency between wallet and txindex
2962 // ppcoin: fix wallet spent state according to txindex
2963 void CWallet::FixSpentCoins(int& nMismatchFound, int64_t& nBalanceInQuestion, bool fCheckOnly)
2966 nBalanceInQuestion = 0;
2969 vector<CWalletTx*> vCoins;
2970 vCoins.reserve(mapWallet.size());
2971 for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
2972 vCoins.push_back(&(*it).second);
2975 for (CWalletTx* pcoin : vCoins)
2977 // Find the corresponding transaction index
2979 if (!txdb.ReadTxIndex(pcoin->GetHash(), txindex))
2981 for (unsigned int n=0; n < pcoin->vout.size(); n++)
2983 if (IsMine(pcoin->vout[n]) && pcoin->IsSpent(n) && (txindex.vSpent.size() <= n || txindex.vSpent[n].IsNull()))
2985 printf("FixSpentCoins found lost coin %sppc %s[%u], %s\n",
2986 FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n, fCheckOnly? "repair not attempted" : "repairing");
2988 nBalanceInQuestion += pcoin->vout[n].nValue;
2991 pcoin->MarkUnspent(n);
2992 pcoin->WriteToDisk();
2995 else if (IsMine(pcoin->vout[n]) && !pcoin->IsSpent(n) && (txindex.vSpent.size() > n && !txindex.vSpent[n].IsNull()))
2997 printf("FixSpentCoins found spent coin %sppc %s[%u], %s\n",
2998 FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n, fCheckOnly? "repair not attempted" : "repairing");
3000 nBalanceInQuestion += pcoin->vout[n].nValue;
3003 pcoin->MarkSpent(n);
3004 pcoin->WriteToDisk();
3010 if(IsMine((CTransaction)*pcoin) && (pcoin->IsCoinBase() || pcoin->IsCoinStake()) && pcoin->GetDepthInMainChain() == 0)
3012 printf("FixSpentCoins %s tx %s\n", fCheckOnly ? "found" : "removed", pcoin->GetHash().ToString().c_str());
3015 EraseFromWallet(pcoin->GetHash());
3021 // ppcoin: disable transaction (only for coinstake)
3022 void CWallet::DisableTransaction(const CTransaction &tx)
3024 if (!tx.IsCoinStake() || !IsFromMe(tx))
3025 return; // only disconnecting coinstake requires marking input unspent
3028 for (const CTxIn& txin : tx.vin)
3030 map<uint256, CWalletTx>::iterator mi = mapWallet.find(txin.prevout.hash);
3031 if (mi != mapWallet.end())
3033 CWalletTx& prev = (*mi).second;
3034 if (txin.prevout.n < prev.vout.size() && IsMine(prev.vout[txin.prevout.n]))
3036 prev.MarkUnspent(txin.prevout.n);
3043 CPubKey CReserveKey::GetReservedKey()
3048 pwallet->ReserveKeyFromKeyPool(nIndex, keypool);
3050 vchPubKey = keypool.vchPubKey;
3053 printf("CReserveKey::GetReservedKey(): Warning: Using default key instead of a new key, top up your keypool!");
3054 vchPubKey = pwallet->vchDefaultKey;
3057 assert(vchPubKey.IsValid());
3061 void CReserveKey::KeepKey()
3064 pwallet->KeepKey(nIndex);
3066 vchPubKey = CPubKey();
3069 void CReserveKey::ReturnKey()
3072 pwallet->ReturnKey(nIndex);
3074 vchPubKey = CPubKey();
3077 void CWallet::GetAllReserveKeys(set<CKeyID>& setAddress) const
3081 CWalletDB walletdb(strWalletFile);
3083 LOCK2(cs_main, cs_wallet);
3084 for (const int64_t& id : setKeyPool)
3087 if (!walletdb.ReadPool(id, keypool))
3088 throw runtime_error("GetAllReserveKeyHashes() : read failed");
3089 assert(keypool.vchPubKey.IsValid());
3090 CKeyID keyID = keypool.vchPubKey.GetID();
3091 if (!HaveKey(keyID))
3092 throw runtime_error("GetAllReserveKeyHashes() : unknown key in key pool");
3093 setAddress.insert(keyID);
3097 void CWallet::UpdatedTransaction(const uint256 &hashTx)
3101 // Only notify UI if this transaction is in this wallet
3102 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(hashTx);
3103 if (mi != mapWallet.end())
3105 NotifyTransactionChanged(this, hashTx, CT_UPDATED);
3106 vMintingWalletUpdated.push_back(hashTx);
3111 void CWallet::GetAddresses(std::map<CBitcoinAddress, int64_t> &mapAddresses) const {
3112 mapAddresses.clear();
3114 // get birth times for keys with metadata
3115 for (std::map<CBitcoinAddress, CKeyMetadata>::const_iterator it = mapKeyMetadata.begin(); it != mapKeyMetadata.end(); it++) {
3116 mapAddresses[it->first] = it->second.nCreateTime ? it->second.nCreateTime : 0;
3119 for (std::map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); it++) {
3120 // iterate over all wallet transactions...
3121 const CWalletTx &wtx = (*it).second;
3122 if (wtx.hashBlock == 0)
3123 continue; // skip unconfirmed transactions
3125 for(std::vector<CTxOut>::const_iterator it2 = wtx.vout.begin(); it2 != wtx.vout.end(); it2++) {
3126 const CTxOut &out = (*it2);
3127 // iterate over all their outputs
3128 CBitcoinAddress addressRet;
3129 if (ExtractAddress(*this, out.scriptPubKey, addressRet)) {
3130 if (mapAddresses.find(addressRet) != mapAddresses.end() && (mapAddresses[addressRet] == 0 || mapAddresses[addressRet] > wtx.nTime))
3131 mapAddresses[addressRet] = wtx.nTime;
3134 // multisig output affects more than one key
3135 std::vector<CKeyID> vAffected;
3136 ::ExtractAffectedKeys(*this, out.scriptPubKey, vAffected);
3138 for(std::vector<CKeyID>::const_iterator it3 = vAffected.begin(); it3 != vAffected.end(); it3++) {
3139 CBitcoinAddress addrAffected(*it3);
3140 if (mapAddresses.find(addrAffected) != mapAddresses.end() && (mapAddresses[addrAffected] == 0 || mapAddresses[addrAffected] > wtx.nTime))
3141 mapAddresses[addrAffected] = wtx.nTime;
3149 void CWallet::ClearOrphans()
3151 list<uint256> orphans;
3154 for(map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
3156 const CWalletTx *wtx = &(*it).second;
3157 if((wtx->IsCoinBase() || wtx->IsCoinStake()) && !wtx->IsInMainChain())
3159 orphans.push_back(wtx->GetHash());
3163 for(list<uint256>::const_iterator it = orphans.begin(); it != orphans.end(); ++it)
3164 EraseFromWallet(*it);