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.
9 #include "ui_interface.h"
14 extern int nStakeMaxAge;
17 //////////////////////////////////////////////////////////////////////////////
22 struct CompareValueOnly
24 bool operator()(const pair<int64, pair<const CWalletTx*, unsigned int> >& t1,
25 const pair<int64, pair<const CWalletTx*, unsigned int> >& t2) const
27 return t1.first < t2.first;
31 CPubKey CWallet::GenerateNewKey()
33 bool fCompressed = CanSupportFeature(FEATURE_COMPRPUBKEY); // default to compressed public keys if we want 0.6.0 wallets
37 key.MakeNewKey(fCompressed);
39 // Compressed public keys were introduced in version 0.6.0
41 SetMinVersion(FEATURE_COMPRPUBKEY);
44 throw std::runtime_error("CWallet::GenerateNewKey() : AddKey failed");
45 return key.GetPubKey();
48 bool CWallet::AddKey(const CKey& key)
50 if (!CCryptoKeyStore::AddKey(key))
55 return CWalletDB(strWalletFile).WriteKey(key.GetPubKey(), key.GetPrivKey());
59 bool CWallet::AddCryptedKey(const CPubKey &vchPubKey, const vector<unsigned char> &vchCryptedSecret)
61 if (!CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret))
67 if (pwalletdbEncryption)
68 return pwalletdbEncryption->WriteCryptedKey(vchPubKey, vchCryptedSecret);
70 return CWalletDB(strWalletFile).WriteCryptedKey(vchPubKey, vchCryptedSecret);
75 bool CWallet::AddCScript(const CScript& redeemScript)
77 if (!CCryptoKeyStore::AddCScript(redeemScript))
81 return CWalletDB(strWalletFile).WriteCScript(Hash160(redeemScript), redeemScript);
84 // ppcoin: optional setting to unlock wallet for block minting only;
85 // serves to disable the trivial sendmoney when OS account compromised
86 bool fWalletUnlockMintOnly = false;
88 bool CWallet::Unlock(const SecureString& strWalletPassphrase)
94 CKeyingMaterial vMasterKey;
98 BOOST_FOREACH(const MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
100 if(!crypter.SetKeyFromPassphrase(strWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
102 if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
104 if (CCryptoKeyStore::Unlock(vMasterKey))
111 bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase)
113 bool fWasLocked = IsLocked();
120 CKeyingMaterial vMasterKey;
121 BOOST_FOREACH(MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
123 if(!crypter.SetKeyFromPassphrase(strOldWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
125 if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
127 if (CCryptoKeyStore::Unlock(vMasterKey))
129 int64 nStartTime = GetTimeMillis();
130 crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
131 pMasterKey.second.nDeriveIterations = pMasterKey.second.nDeriveIterations * (100 / ((double)(GetTimeMillis() - nStartTime)));
133 nStartTime = GetTimeMillis();
134 crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
135 pMasterKey.second.nDeriveIterations = (pMasterKey.second.nDeriveIterations + pMasterKey.second.nDeriveIterations * 100 / ((double)(GetTimeMillis() - nStartTime))) / 2;
137 if (pMasterKey.second.nDeriveIterations < 25000)
138 pMasterKey.second.nDeriveIterations = 25000;
140 printf("Wallet passphrase changed to an nDeriveIterations of %i\n", pMasterKey.second.nDeriveIterations);
142 if (!crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
144 if (!crypter.Encrypt(vMasterKey, pMasterKey.second.vchCryptedKey))
146 CWalletDB(strWalletFile).WriteMasterKey(pMasterKey.first, pMasterKey.second);
157 void CWallet::SetBestChain(const CBlockLocator& loc)
159 CWalletDB walletdb(strWalletFile);
160 walletdb.WriteBestBlock(loc);
163 // This class implements an addrIncoming entry that causes pre-0.4
164 // clients to crash on startup if reading a private-key-encrypted wallet.
165 class CCorruptAddress
170 if (nType & SER_DISK)
175 bool CWallet::SetMinVersion(enum WalletFeature nVersion, CWalletDB* pwalletdbIn, bool fExplicit)
177 if (nWalletVersion >= nVersion)
180 // when doing an explicit upgrade, if we pass the max version permitted, upgrade all the way
181 if (fExplicit && nVersion > nWalletMaxVersion)
182 nVersion = FEATURE_LATEST;
184 nWalletVersion = nVersion;
186 if (nVersion > nWalletMaxVersion)
187 nWalletMaxVersion = nVersion;
191 CWalletDB* pwalletdb = pwalletdbIn ? pwalletdbIn : new CWalletDB(strWalletFile);
192 if (nWalletVersion >= 40000)
194 // Versions prior to 0.4.0 did not support the "minversion" record.
195 // Use a CCorruptAddress to make them crash instead.
196 CCorruptAddress corruptAddress;
197 pwalletdb->WriteSetting("addrIncoming", corruptAddress);
199 if (nWalletVersion > 40000)
200 pwalletdb->WriteMinVersion(nWalletVersion);
208 bool CWallet::SetMaxVersion(int nVersion)
210 // cannot downgrade below current version
211 if (nWalletVersion > nVersion)
214 nWalletMaxVersion = nVersion;
219 bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
224 CKeyingMaterial vMasterKey;
225 RandAddSeedPerfmon();
227 vMasterKey.resize(WALLET_CRYPTO_KEY_SIZE);
228 RAND_bytes(&vMasterKey[0], WALLET_CRYPTO_KEY_SIZE);
230 CMasterKey kMasterKey;
232 RandAddSeedPerfmon();
233 kMasterKey.vchSalt.resize(WALLET_CRYPTO_SALT_SIZE);
234 RAND_bytes(&kMasterKey.vchSalt[0], WALLET_CRYPTO_SALT_SIZE);
237 int64 nStartTime = GetTimeMillis();
238 crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, 25000, kMasterKey.nDerivationMethod);
239 kMasterKey.nDeriveIterations = 2500000 / ((double)(GetTimeMillis() - nStartTime));
241 nStartTime = GetTimeMillis();
242 crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod);
243 kMasterKey.nDeriveIterations = (kMasterKey.nDeriveIterations + kMasterKey.nDeriveIterations * 100 / ((double)(GetTimeMillis() - nStartTime))) / 2;
245 if (kMasterKey.nDeriveIterations < 25000)
246 kMasterKey.nDeriveIterations = 25000;
248 printf("Encrypting Wallet with an nDeriveIterations of %i\n", kMasterKey.nDeriveIterations);
250 if (!crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod))
252 if (!crypter.Encrypt(vMasterKey, kMasterKey.vchCryptedKey))
257 mapMasterKeys[++nMasterKeyMaxID] = kMasterKey;
260 pwalletdbEncryption = new CWalletDB(strWalletFile);
261 if (!pwalletdbEncryption->TxnBegin())
263 pwalletdbEncryption->WriteMasterKey(nMasterKeyMaxID, kMasterKey);
266 if (!EncryptKeys(vMasterKey))
269 pwalletdbEncryption->TxnAbort();
270 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.
273 // Encryption was introduced in version 0.4.0
274 SetMinVersion(FEATURE_WALLETCRYPT, pwalletdbEncryption, true);
278 if (!pwalletdbEncryption->TxnCommit())
279 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.
281 delete pwalletdbEncryption;
282 pwalletdbEncryption = NULL;
286 Unlock(strWalletPassphrase);
290 // Need to completely rewrite the wallet file; if we don't, bdb might keep
291 // bits of the unencrypted private key in slack space in the database file.
292 CDB::Rewrite(strWalletFile);
295 NotifyStatusChanged(this);
300 int64 CWallet::IncOrderPosNext(CWalletDB *pwalletdb)
302 int64 nRet = nOrderPosNext++;
304 pwalletdb->WriteOrderPosNext(nOrderPosNext);
306 CWalletDB(strWalletFile).WriteOrderPosNext(nOrderPosNext);
311 CWallet::TxItems CWallet::OrderedTxItems(std::list<CAccountingEntry>& acentries, std::string strAccount)
313 CWalletDB walletdb(strWalletFile);
315 // First: get all CWalletTx and CAccountingEntry into a sorted-by-order multimap.
318 // Note: maintaining indices in the database of (account,time) --> txid and (account, time) --> acentry
319 // would make this much faster for applications that do this a lot.
320 for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
322 CWalletTx* wtx = &((*it).second);
323 txOrdered.insert(make_pair(wtx->nOrderPos, TxPair(wtx, (CAccountingEntry*)0)));
326 walletdb.ListAccountCreditDebit(strAccount, acentries);
327 BOOST_FOREACH(CAccountingEntry& entry, acentries)
329 txOrdered.insert(make_pair(entry.nOrderPos, TxPair((CWalletTx*)0, &entry)));
335 void CWallet::WalletUpdateSpent(const CTransaction &tx)
337 // Anytime a signature is successfully verified, it's proof the outpoint is spent.
338 // Update the wallet spent flag if it doesn't know due to wallet.dat being
339 // restored from backup or the user making copies of wallet.dat.
342 BOOST_FOREACH(const CTxIn& txin, tx.vin)
344 map<uint256, CWalletTx>::iterator mi = mapWallet.find(txin.prevout.hash);
345 if (mi != mapWallet.end())
347 CWalletTx& wtx = (*mi).second;
348 if (txin.prevout.n >= wtx.vout.size())
349 printf("WalletUpdateSpent: bad wtx %s\n", wtx.GetHash().ToString().c_str());
350 else if (!wtx.IsSpent(txin.prevout.n) && IsMine(wtx.vout[txin.prevout.n]))
352 printf("WalletUpdateSpent found spent coin %snvc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
353 wtx.MarkSpent(txin.prevout.n);
355 NotifyTransactionChanged(this, txin.prevout.hash, CT_UPDATED);
362 void CWallet::MarkDirty()
366 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
367 item.second.MarkDirty();
371 bool CWallet::AddToWallet(const CWalletTx& wtxIn)
373 uint256 hash = wtxIn.GetHash();
376 // Inserts only if not already there, returns tx inserted or tx found
377 pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
378 CWalletTx& wtx = (*ret.first).second;
379 wtx.BindWallet(this);
380 bool fInsertedNew = ret.second;
383 wtx.nTimeReceived = GetAdjustedTime();
384 wtx.nOrderPos = IncOrderPosNext();
386 wtx.nTimeSmart = wtx.nTimeReceived;
387 if (wtxIn.hashBlock != 0)
389 if (mapBlockIndex.count(wtxIn.hashBlock))
391 unsigned int latestNow = wtx.nTimeReceived;
392 unsigned int latestEntry = 0;
394 // Tolerate times up to the last timestamp in the wallet not more than 5 minutes into the future
395 int64 latestTolerated = latestNow + 300;
396 std::list<CAccountingEntry> acentries;
397 TxItems txOrdered = OrderedTxItems(acentries);
398 for (TxItems::reverse_iterator it = txOrdered.rbegin(); it != txOrdered.rend(); ++it)
400 CWalletTx *const pwtx = (*it).second.first;
403 CAccountingEntry *const pacentry = (*it).second.second;
407 nSmartTime = pwtx->nTimeSmart;
409 nSmartTime = pwtx->nTimeReceived;
412 nSmartTime = pacentry->nTime;
413 if (nSmartTime <= latestTolerated)
415 latestEntry = nSmartTime;
416 if (nSmartTime > latestNow)
417 latestNow = nSmartTime;
423 unsigned int& blocktime = mapBlockIndex[wtxIn.hashBlock]->nTime;
424 wtx.nTimeSmart = std::max(latestEntry, std::min(blocktime, latestNow));
427 printf("AddToWallet() : found %s in block %s not in index\n",
428 wtxIn.GetHash().ToString().substr(0,10).c_str(),
429 wtxIn.hashBlock.ToString().c_str());
433 bool fUpdated = false;
437 if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
439 wtx.hashBlock = wtxIn.hashBlock;
442 if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
444 wtx.vMerkleBranch = wtxIn.vMerkleBranch;
445 wtx.nIndex = wtxIn.nIndex;
448 if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
450 wtx.fFromMe = wtxIn.fFromMe;
453 fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
457 printf("AddToWallet %s %s%s\n", wtxIn.GetHash().ToString().substr(0,10).c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
460 if (fInsertedNew || fUpdated)
461 if (!wtx.WriteToDisk())
464 // If default receiving address gets used, replace it with a new one
465 CScript scriptDefaultKey;
466 scriptDefaultKey.SetDestination(vchDefaultKey.GetID());
467 BOOST_FOREACH(const CTxOut& txout, wtx.vout)
469 if (txout.scriptPubKey == scriptDefaultKey)
471 CPubKey newDefaultKey;
472 if (GetKeyFromPool(newDefaultKey, false))
474 SetDefaultKey(newDefaultKey);
475 SetAddressBookName(vchDefaultKey.GetID(), "");
480 // since AddToWallet is called directly for self-originating transactions, check for consumption of own coins
481 WalletUpdateSpent(wtx);
483 // Notify UI of new or updated transaction
484 NotifyTransactionChanged(this, hash, fInsertedNew ? CT_NEW : CT_UPDATED);
489 // Add a transaction to the wallet, or update it.
490 // pblock is optional, but should be provided if the transaction is known to be in a block.
491 // If fUpdate is true, existing transactions will be updated.
492 bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate, bool fFindBlock)
494 uint256 hash = tx.GetHash();
497 bool fExisted = mapWallet.count(hash);
498 if (fExisted && !fUpdate) return false;
499 if (fExisted || IsMine(tx) || IsFromMe(tx))
501 CWalletTx wtx(this,tx);
502 // Get merkle branch if transaction was found in a block
504 wtx.SetMerkleBranch(pblock);
505 return AddToWallet(wtx);
508 WalletUpdateSpent(tx);
513 bool CWallet::EraseFromWallet(uint256 hash)
519 if (mapWallet.erase(hash))
520 CWalletDB(strWalletFile).EraseTx(hash);
526 bool CWallet::IsMine(const CTxIn &txin) const
530 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
531 if (mi != mapWallet.end())
533 const CWalletTx& prev = (*mi).second;
534 if (txin.prevout.n < prev.vout.size())
535 if (IsMine(prev.vout[txin.prevout.n]))
542 int64 CWallet::GetDebit(const CTxIn &txin) const
546 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
547 if (mi != mapWallet.end())
549 const CWalletTx& prev = (*mi).second;
550 if (txin.prevout.n < prev.vout.size())
551 if (IsMine(prev.vout[txin.prevout.n]))
552 return prev.vout[txin.prevout.n].nValue;
558 bool CWallet::IsChange(const CTxOut& txout) const
560 CTxDestination address;
562 // TODO: fix handling of 'change' outputs. The assumption is that any
563 // payment to a TX_PUBKEYHASH that is mine but isn't in the address book
564 // is change. That assumption is likely to break when we implement multisignature
565 // wallets that return change back into a multi-signature-protected address;
566 // a better way of identifying which outputs are 'the send' and which are
567 // 'the change' will need to be implemented (maybe extend CWalletTx to remember
568 // which output, if any, was change).
569 if (ExtractDestination(txout.scriptPubKey, address) && ::IsMine(*this, address))
572 if (!mapAddressBook.count(address))
578 int64 CWalletTx::GetTxTime() const
580 int64 n = nTimeSmart;
581 return n ? n : nTimeReceived;
584 int CWalletTx::GetRequestCount() const
586 // Returns -1 if it wasn't being tracked
589 LOCK(pwallet->cs_wallet);
590 if (IsCoinBase() || IsCoinStake())
595 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
596 if (mi != pwallet->mapRequestCount.end())
597 nRequests = (*mi).second;
602 // Did anyone request this transaction?
603 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(GetHash());
604 if (mi != pwallet->mapRequestCount.end())
606 nRequests = (*mi).second;
608 // How about the block it's in?
609 if (nRequests == 0 && hashBlock != 0)
611 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
612 if (mi != pwallet->mapRequestCount.end())
613 nRequests = (*mi).second;
615 nRequests = 1; // If it's in someone else's block it must have got out
623 void CWalletTx::GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, list<pair<CTxDestination, int64> >& listReceived,
624 list<pair<CTxDestination, int64> >& listSent, int64& nFee, string& strSentAccount) const
626 nGeneratedImmature = nGeneratedMature = nFee = 0;
627 listReceived.clear();
629 strSentAccount = strFromAccount;
631 if (IsCoinBase() || IsCoinStake())
633 if (GetBlocksToMaturity() > 0)
634 nGeneratedImmature = pwallet->GetCredit(*this);
636 nGeneratedMature = GetCredit();
641 int64 nDebit = GetDebit();
642 if (nDebit > 0) // debit>0 means we signed/sent this transaction
644 int64 nValueOut = GetValueOut();
645 nFee = nDebit - nValueOut;
649 BOOST_FOREACH(const CTxOut& txout, vout)
651 CTxDestination address;
652 vector<unsigned char> vchPubKey;
653 if (!ExtractDestination(txout.scriptPubKey, address))
655 printf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
656 this->GetHash().ToString().c_str());
659 // Don't report 'change' txouts
660 if (nDebit > 0 && pwallet->IsChange(txout))
664 listSent.push_back(make_pair(address, txout.nValue));
666 if (pwallet->IsMine(txout))
667 listReceived.push_back(make_pair(address, txout.nValue));
672 void CWalletTx::GetAccountAmounts(const string& strAccount, int64& nGenerated, int64& nReceived,
673 int64& nSent, int64& nFee) const
675 nGenerated = nReceived = nSent = nFee = 0;
677 int64 allGeneratedImmature, allGeneratedMature, allFee;
678 allGeneratedImmature = allGeneratedMature = allFee = 0;
679 string strSentAccount;
680 list<pair<CTxDestination, int64> > listReceived;
681 list<pair<CTxDestination, int64> > listSent;
682 GetAmounts(allGeneratedImmature, allGeneratedMature, listReceived, listSent, allFee, strSentAccount);
684 if (strAccount == "")
685 nGenerated = allGeneratedMature;
686 if (strAccount == strSentAccount)
688 BOOST_FOREACH(const PAIRTYPE(CTxDestination,int64)& s, listSent)
693 LOCK(pwallet->cs_wallet);
694 BOOST_FOREACH(const PAIRTYPE(CTxDestination,int64)& r, listReceived)
696 if (pwallet->mapAddressBook.count(r.first))
698 map<CTxDestination, string>::const_iterator mi = pwallet->mapAddressBook.find(r.first);
699 if (mi != pwallet->mapAddressBook.end() && (*mi).second == strAccount)
700 nReceived += r.second;
702 else if (strAccount.empty())
704 nReceived += r.second;
710 void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
714 const int COPY_DEPTH = 3;
715 if (SetMerkleBranch() < COPY_DEPTH)
717 vector<uint256> vWorkQueue;
718 BOOST_FOREACH(const CTxIn& txin, vin)
719 vWorkQueue.push_back(txin.prevout.hash);
721 // This critsect is OK because txdb is already open
723 LOCK(pwallet->cs_wallet);
724 map<uint256, const CMerkleTx*> mapWalletPrev;
725 set<uint256> setAlreadyDone;
726 for (unsigned int i = 0; i < vWorkQueue.size(); i++)
728 uint256 hash = vWorkQueue[i];
729 if (setAlreadyDone.count(hash))
731 setAlreadyDone.insert(hash);
734 map<uint256, CWalletTx>::const_iterator mi = pwallet->mapWallet.find(hash);
735 if (mi != pwallet->mapWallet.end())
738 BOOST_FOREACH(const CMerkleTx& txWalletPrev, (*mi).second.vtxPrev)
739 mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
741 else if (mapWalletPrev.count(hash))
743 tx = *mapWalletPrev[hash];
745 else if (!fClient && txdb.ReadDiskTx(hash, tx))
751 printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
755 int nDepth = tx.SetMerkleBranch();
756 vtxPrev.push_back(tx);
758 if (nDepth < COPY_DEPTH)
760 BOOST_FOREACH(const CTxIn& txin, tx.vin)
761 vWorkQueue.push_back(txin.prevout.hash);
767 reverse(vtxPrev.begin(), vtxPrev.end());
770 bool CWalletTx::WriteToDisk()
772 return CWalletDB(pwallet->strWalletFile).WriteTx(GetHash(), *this);
775 // Scan the block chain (starting in pindexStart) for transactions
776 // from or to us. If fUpdate is true, found transactions that already
777 // exist in the wallet will be updated.
778 int CWallet::ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
782 CBlockIndex* pindex = pindexStart;
788 block.ReadFromDisk(pindex, true);
789 BOOST_FOREACH(CTransaction& tx, block.vtx)
791 if (AddToWalletIfInvolvingMe(tx, &block, fUpdate))
794 pindex = pindex->pnext;
800 int CWallet::ScanForWalletTransaction(const uint256& hashTx)
803 tx.ReadFromDisk(COutPoint(hashTx, 0));
804 if (AddToWalletIfInvolvingMe(tx, NULL, true, true))
809 void CWallet::ReacceptWalletTransactions()
817 vector<CDiskTxPos> vMissingTx;
818 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
820 CWalletTx& wtx = item.second;
821 if ((wtx.IsCoinBase() && wtx.IsSpent(0)) || (wtx.IsCoinStake() && wtx.IsSpent(1)))
825 bool fUpdated = false;
826 if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
828 // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
829 if (txindex.vSpent.size() != wtx.vout.size())
831 printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %"PRIszu" != wtx.vout.size() %"PRIszu"\n", txindex.vSpent.size(), wtx.vout.size());
834 for (unsigned int i = 0; i < txindex.vSpent.size(); i++)
838 if (!txindex.vSpent[i].IsNull() && IsMine(wtx.vout[i]))
842 vMissingTx.push_back(txindex.vSpent[i]);
847 printf("ReacceptWalletTransactions found spent coin %snvc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
854 // Re-accept any txes of ours that aren't already in a block
855 if (!(wtx.IsCoinBase() || wtx.IsCoinStake()))
856 wtx.AcceptWalletTransaction(txdb, false);
859 if (!vMissingTx.empty())
861 // TODO: optimize this to scan just part of the block chain?
862 if (ScanForWalletTransactions(pindexGenesisBlock))
863 fRepeat = true; // Found missing transactions: re-do re-accept.
868 void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
870 BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
872 if (!(tx.IsCoinBase() || tx.IsCoinStake()))
874 uint256 hash = tx.GetHash();
875 if (!txdb.ContainsTx(hash))
876 RelayMessage(CInv(MSG_TX, hash), (CTransaction)tx);
879 if (!(IsCoinBase() || IsCoinStake()))
881 uint256 hash = GetHash();
882 if (!txdb.ContainsTx(hash))
884 printf("Relaying wtx %s\n", hash.ToString().substr(0,10).c_str());
885 RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
890 void CWalletTx::RelayWalletTransaction()
893 RelayWalletTransaction(txdb);
896 void CWallet::ResendWalletTransactions()
898 // Do this infrequently and randomly to avoid giving away
899 // that these are our transactions.
900 static int64 nNextTime;
901 if (GetTime() < nNextTime)
903 bool fFirst = (nNextTime == 0);
904 nNextTime = GetTime() + GetRand(30 * 60);
908 // Only do it if there's been a new block since last time
909 static int64 nLastTime;
910 if (nTimeBestReceived < nLastTime)
912 nLastTime = GetTime();
914 // Rebroadcast any of our txes that aren't in a block yet
915 printf("ResendWalletTransactions()\n");
919 // Sort them in chronological order
920 multimap<unsigned int, CWalletTx*> mapSorted;
921 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
923 CWalletTx& wtx = item.second;
924 // Don't rebroadcast until it's had plenty of time that
925 // it should have gotten in already by now.
926 if (nTimeBestReceived - (int64)wtx.nTimeReceived > 5 * 60)
927 mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
929 BOOST_FOREACH(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
931 CWalletTx& wtx = *item.second;
932 if (wtx.CheckTransaction())
933 wtx.RelayWalletTransaction(txdb);
935 printf("ResendWalletTransactions() : CheckTransaction failed for transaction %s\n", wtx.GetHash().ToString().c_str());
945 //////////////////////////////////////////////////////////////////////////////
951 int64 CWallet::GetBalance() const
956 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
958 const CWalletTx* pcoin = &(*it).second;
959 if (pcoin->IsFinal() && pcoin->IsConfirmed())
960 nTotal += pcoin->GetAvailableCredit();
967 int64 CWallet::GetUnconfirmedBalance() const
972 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
974 const CWalletTx* pcoin = &(*it).second;
975 if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
976 nTotal += pcoin->GetAvailableCredit();
982 int64 CWallet::GetImmatureBalance() const
987 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
989 const CWalletTx& pcoin = (*it).second;
990 if (pcoin.IsCoinBase() && pcoin.GetBlocksToMaturity() > 0 && pcoin.IsInMainChain())
991 nTotal += GetCredit(pcoin);
997 // populate vCoins with vector of spendable COutputs
998 void CWallet::AvailableCoins(vector<COutput>& vCoins, bool fOnlyConfirmed) const
1004 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1006 const CWalletTx* pcoin = &(*it).second;
1008 if (!pcoin->IsFinal())
1011 if (fOnlyConfirmed && !pcoin->IsConfirmed())
1014 if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
1017 if(pcoin->IsCoinStake() && pcoin->GetBlocksToMaturity() > 0)
1020 for (unsigned int i = 0; i < pcoin->vout.size(); i++)
1021 if (!(pcoin->IsSpent(i)) && IsMine(pcoin->vout[i]) && pcoin->vout[i].nValue > 0)
1022 vCoins.push_back(COutput(pcoin, i, pcoin->GetDepthInMainChain()));
1027 static void ApproximateBestSubset(vector<pair<int64, pair<const CWalletTx*,unsigned int> > >vValue, int64 nTotalLower, int64 nTargetValue,
1028 vector<char>& vfBest, int64& nBest, int iterations = 1000)
1030 vector<char> vfIncluded;
1032 vfBest.assign(vValue.size(), true);
1033 nBest = nTotalLower;
1035 for (int nRep = 0; nRep < iterations && nBest != nTargetValue; nRep++)
1037 vfIncluded.assign(vValue.size(), false);
1039 bool fReachedTarget = false;
1040 for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
1042 for (unsigned int i = 0; i < vValue.size(); i++)
1044 if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
1046 nTotal += vValue[i].first;
1047 vfIncluded[i] = true;
1048 if (nTotal >= nTargetValue)
1050 fReachedTarget = true;
1054 vfBest = vfIncluded;
1056 nTotal -= vValue[i].first;
1057 vfIncluded[i] = false;
1065 // ppcoin: total coins staked (non-spendable until maturity)
1066 int64 CWallet::GetStake() const
1070 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1072 const CWalletTx* pcoin = &(*it).second;
1073 if (pcoin->IsCoinStake() && pcoin->GetBlocksToMaturity() > 0 && pcoin->GetDepthInMainChain() > 0)
1074 nTotal += CWallet::GetCredit(*pcoin);
1079 int64 CWallet::GetNewMint() const
1083 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
1085 const CWalletTx* pcoin = &(*it).second;
1086 if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0 && pcoin->GetDepthInMainChain() > 0)
1087 nTotal += CWallet::GetCredit(*pcoin);
1092 bool CWallet::SelectCoinsMinConf(int64 nTargetValue, unsigned int nSpendTime, int nConfMine, int nConfTheirs, vector<COutput> vCoins, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
1094 setCoinsRet.clear();
1097 // List of values less than target
1098 pair<int64, pair<const CWalletTx*,unsigned int> > coinLowestLarger;
1099 coinLowestLarger.first = std::numeric_limits<int64>::max();
1100 coinLowestLarger.second.first = NULL;
1101 vector<pair<int64, pair<const CWalletTx*,unsigned int> > > vValue;
1102 int64 nTotalLower = 0;
1104 random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
1106 BOOST_FOREACH(COutput output, vCoins)
1108 const CWalletTx *pcoin = output.tx;
1110 if (output.nDepth < (pcoin->IsFromMe() ? nConfMine : nConfTheirs))
1115 if (pcoin->nTime > nSpendTime)
1116 continue; // ppcoin: timestamp must not exceed spend time
1118 int64 n = pcoin->vout[i].nValue;
1120 pair<int64,pair<const CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin, i));
1122 if (n == nTargetValue)
1124 setCoinsRet.insert(coin.second);
1125 nValueRet += coin.first;
1128 else if (n < nTargetValue + CENT)
1130 vValue.push_back(coin);
1133 else if (n < coinLowestLarger.first)
1135 coinLowestLarger = coin;
1139 if (nTotalLower == nTargetValue)
1141 for (unsigned int i = 0; i < vValue.size(); ++i)
1143 setCoinsRet.insert(vValue[i].second);
1144 nValueRet += vValue[i].first;
1149 if (nTotalLower < nTargetValue)
1151 if (coinLowestLarger.second.first == NULL)
1153 setCoinsRet.insert(coinLowestLarger.second);
1154 nValueRet += coinLowestLarger.first;
1158 // Solve subset sum by stochastic approximation
1159 sort(vValue.rbegin(), vValue.rend(), CompareValueOnly());
1160 vector<char> vfBest;
1163 ApproximateBestSubset(vValue, nTotalLower, nTargetValue, vfBest, nBest, 1000);
1164 if (nBest != nTargetValue && nTotalLower >= nTargetValue + CENT)
1165 ApproximateBestSubset(vValue, nTotalLower, nTargetValue + CENT, vfBest, nBest, 1000);
1167 // If we have a bigger coin and (either the stochastic approximation didn't find a good solution,
1168 // or the next bigger coin is closer), return the bigger coin
1169 if (coinLowestLarger.second.first &&
1170 ((nBest != nTargetValue && nBest < nTargetValue + CENT) || coinLowestLarger.first <= nBest))
1172 setCoinsRet.insert(coinLowestLarger.second);
1173 nValueRet += coinLowestLarger.first;
1176 for (unsigned int i = 0; i < vValue.size(); i++)
1179 setCoinsRet.insert(vValue[i].second);
1180 nValueRet += vValue[i].first;
1183 if (fDebug && GetBoolArg("-printpriority"))
1186 printf("SelectCoins() best subset: ");
1187 for (unsigned int i = 0; i < vValue.size(); i++)
1189 printf("%s ", FormatMoney(vValue[i].first).c_str());
1190 printf("total %s\n", FormatMoney(nBest).c_str());
1197 bool CWallet::SelectCoins(int64 nTargetValue, unsigned int nSpendTime, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
1199 vector<COutput> vCoins;
1200 AvailableCoins(vCoins);
1202 return (SelectCoinsMinConf(nTargetValue, nSpendTime, 1, 6, vCoins, setCoinsRet, nValueRet) ||
1203 SelectCoinsMinConf(nTargetValue, nSpendTime, 1, 1, vCoins, setCoinsRet, nValueRet) ||
1204 SelectCoinsMinConf(nTargetValue, nSpendTime, 0, 1, vCoins, setCoinsRet, nValueRet));
1210 bool CWallet::CreateTransaction(const vector<pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
1213 BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
1219 if (vecSend.empty() || nValue < 0)
1222 wtxNew.BindWallet(this);
1225 LOCK2(cs_main, cs_wallet);
1226 // txdb must be opened before the mapWallet lock
1229 nFeeRet = nTransactionFee;
1233 wtxNew.vout.clear();
1234 wtxNew.fFromMe = true;
1236 int64 nTotalValue = nValue + nFeeRet;
1237 double dPriority = 0;
1238 // vouts to the payees
1239 BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
1240 wtxNew.vout.push_back(CTxOut(s.second, s.first));
1242 // Choose coins to use
1243 set<pair<const CWalletTx*,unsigned int> > setCoins;
1245 if (!SelectCoins(nTotalValue, wtxNew.nTime, setCoins, nValueIn))
1247 BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
1249 int64 nCredit = pcoin.first->vout[pcoin.second].nValue;
1250 dPriority += (double)nCredit * pcoin.first->GetDepthInMainChain();
1253 int64 nChange = nValueIn - nValue - nFeeRet;
1254 // if sub-cent change is required, the fee must be raised to at least MIN_TX_FEE
1255 // or until nChange becomes zero
1256 // NOTE: this depends on the exact behaviour of GetMinFee
1257 if (nFeeRet < MIN_TX_FEE && nChange > 0 && nChange < CENT)
1259 int64 nMoveToFee = min(nChange, MIN_TX_FEE - nFeeRet);
1260 nChange -= nMoveToFee;
1261 nFeeRet += nMoveToFee;
1264 // ppcoin: sub-cent change is moved to fee
1265 if (nChange > 0 && nChange < MIN_TXOUT_AMOUNT)
1273 // Note: We use a new key here to keep it from being obvious which side is the change.
1274 // The drawback is that by not reusing a previous key, the change may be lost if a
1275 // backup is restored, if the backup doesn't have the new private key for the change.
1276 // If we reused the old key, it would be possible to add code to look for and
1277 // rediscover unknown transactions that were written with keys of ours to recover
1278 // post-backup change.
1280 // Reserve a new key pair from key pool
1281 CPubKey vchPubKey = reservekey.GetReservedKey();
1282 // assert(mapKeys.count(vchPubKey));
1284 // Fill a vout to ourself
1285 // TODO: pass in scriptChange instead of reservekey so
1286 // change transaction isn't always pay-to-bitcoin-address
1287 CScript scriptChange;
1288 scriptChange.SetDestination(vchPubKey.GetID());
1290 // Insert change txn at random position:
1291 vector<CTxOut>::iterator position = wtxNew.vout.begin()+GetRandInt(wtxNew.vout.size());
1292 wtxNew.vout.insert(position, CTxOut(nChange, scriptChange));
1295 reservekey.ReturnKey();
1298 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
1299 wtxNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second));
1303 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
1304 if (!SignSignature(*this, *coin.first, wtxNew, nIn++))
1308 unsigned int nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK, PROTOCOL_VERSION);
1309 if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
1311 dPriority /= nBytes;
1313 // Check that enough fee is included
1314 int64 nPayFee = nTransactionFee * (1 + (int64)nBytes / 1000);
1315 int64 nMinFee = wtxNew.GetMinFee(1, false, GMF_SEND);
1317 if (nFeeRet < max(nPayFee, nMinFee))
1319 nFeeRet = max(nPayFee, nMinFee);
1323 // Fill vtxPrev by copying from previous transactions vtxPrev
1324 wtxNew.AddSupportingTransactions(txdb);
1325 wtxNew.fTimeReceivedIsTxTime = true;
1334 bool CWallet::CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
1336 vector< pair<CScript, int64> > vecSend;
1337 vecSend.push_back(make_pair(scriptPubKey, nValue));
1338 return CreateTransaction(vecSend, wtxNew, reservekey, nFeeRet);
1341 // NovaCoin: get current stake generation power
1342 uint64 CWallet::GetStakeMintPower(const CKeyStore& keystore)
1344 LOCK2(cs_main, cs_wallet);
1346 // Choose coins to use
1347 int64 nBalance = GetBalance();
1348 int64 nReserveBalance = 0;
1349 uint64 nCoinAge = 0;
1351 if (mapArgs.count("-reservebalance") && !ParseMoney(mapArgs["-reservebalance"], nReserveBalance))
1353 error("CreateCoinStake : invalid reserve balance amount");
1357 if (nBalance <= nReserveBalance)
1360 set<pair<const CWalletTx*,unsigned int> > setCoins;
1361 vector<const CWalletTx*> vwtxPrev;
1363 if (!SelectCoins(nBalance - nReserveBalance, GetTime(), setCoins, nValueIn))
1365 if (setCoins.empty())
1368 BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
1372 if (!txdb.ReadTxIndex(pcoin.first->GetHash(), txindex))
1375 // Do not count input that is still too young
1376 if (pcoin.first->nTime + nStakeMaxAge > GetTime())
1379 CBigNum bnCentSecond = CBigNum(pcoin.first->vout[pcoin.second].nValue) * (GetTime()-pcoin.first->nTime) / CENT;
1380 CBigNum bnCoinDay = bnCentSecond * CENT / COIN / (24 * 60 * 60);
1383 nCoinAge += bnCoinDay.getuint64();
1386 if (fDebug && GetBoolArg("-printcoinage"))
1387 printf("StakePower bnCoinDay=%"PRI64d"\n", nCoinAge);
1392 // ppcoin: create coin stake transaction
1393 bool CWallet::CreateCoinStake(const CKeyStore& keystore, unsigned int nBits, int64 nSearchInterval, CTransaction& txNew)
1395 // The following split & combine thresholds are important to security
1396 // Should not be adjusted if you don't understand the consequences
1397 static unsigned int nStakeSplitAge = (60 * 60 * 24 * 90);
1398 int64 nCombineThreshold = GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits) / 3;
1400 CBigNum bnTargetPerCoinDay;
1401 bnTargetPerCoinDay.SetCompact(nBits);
1403 LOCK2(cs_main, cs_wallet);
1406 // Mark coin stake transaction
1407 CScript scriptEmpty;
1408 scriptEmpty.clear();
1409 txNew.vout.push_back(CTxOut(0, scriptEmpty));
1410 // Choose coins to use
1411 int64 nBalance = GetBalance();
1412 int64 nReserveBalance = 0;
1413 if (mapArgs.count("-reservebalance") && !ParseMoney(mapArgs["-reservebalance"], nReserveBalance))
1414 return error("CreateCoinStake : invalid reserve balance amount");
1415 if (nBalance <= nReserveBalance)
1417 set<pair<const CWalletTx*,unsigned int> > setCoins;
1418 vector<const CWalletTx*> vwtxPrev;
1420 if (!SelectCoins(nBalance - nReserveBalance, txNew.nTime, setCoins, nValueIn))
1422 if (setCoins.empty())
1425 CScript scriptPubKeyKernel;
1426 BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
1430 if (!txdb.ReadTxIndex(pcoin.first->GetHash(), txindex))
1433 // Read block header
1435 if (!block.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos, false))
1437 static int nMaxStakeSearchInterval = 60;
1438 if (block.GetBlockTime() + nStakeMinAge > txNew.nTime - nMaxStakeSearchInterval)
1439 continue; // only count coins meeting min age requirement
1441 bool fKernelFound = false;
1442 for (unsigned int n=0; n<min(nSearchInterval,(int64)nMaxStakeSearchInterval) && !fKernelFound && !fShutdown; n++)
1444 // Search backward in time from the given txNew timestamp
1445 // Search nSearchInterval seconds back up to nMaxStakeSearchInterval
1446 uint256 hashProofOfStake = 0;
1447 COutPoint prevoutStake = COutPoint(pcoin.first->GetHash(), pcoin.second);
1448 if (CheckStakeKernelHash(nBits, block, txindex.pos.nTxPos - txindex.pos.nBlockPos, *pcoin.first, prevoutStake, txNew.nTime - n, hashProofOfStake))
1451 if (fDebug && GetBoolArg("-printcoinstake"))
1452 printf("CreateCoinStake : kernel found\n");
1453 vector<valtype> vSolutions;
1454 txnouttype whichType;
1455 CScript scriptPubKeyOut;
1456 scriptPubKeyKernel = pcoin.first->vout[pcoin.second].scriptPubKey;
1457 if (!Solver(scriptPubKeyKernel, whichType, vSolutions))
1459 if (fDebug && GetBoolArg("-printcoinstake"))
1460 printf("CreateCoinStake : failed to parse kernel\n");
1463 if (fDebug && GetBoolArg("-printcoinstake"))
1464 printf("CreateCoinStake : parsed kernel type=%d\n", whichType);
1465 if (whichType != TX_PUBKEY && whichType != TX_PUBKEYHASH)
1467 if (fDebug && GetBoolArg("-printcoinstake"))
1468 printf("CreateCoinStake : no support for kernel type=%d\n", whichType);
1469 break; // only support pay to public key and pay to address
1471 if (whichType == TX_PUBKEYHASH) // pay to address type
1473 // convert to pay to public key type
1475 if (!keystore.GetKey(uint160(vSolutions[0]), key))
1477 if (fDebug && GetBoolArg("-printcoinstake"))
1478 printf("CreateCoinStake : failed to get key for kernel type=%d\n", whichType);
1479 break; // unable to find corresponding public key
1481 scriptPubKeyOut << key.GetPubKey() << OP_CHECKSIG;
1484 scriptPubKeyOut = scriptPubKeyKernel;
1487 txNew.vin.push_back(CTxIn(pcoin.first->GetHash(), pcoin.second));
1488 nCredit += pcoin.first->vout[pcoin.second].nValue;
1489 vwtxPrev.push_back(pcoin.first);
1490 txNew.vout.push_back(CTxOut(0, scriptPubKeyOut));
1491 if (block.GetBlockTime() + nStakeSplitAge > txNew.nTime)
1492 txNew.vout.push_back(CTxOut(0, scriptPubKeyOut)); //split stake
1493 if (fDebug && GetBoolArg("-printcoinstake"))
1494 printf("CreateCoinStake : added kernel type=%d\n", whichType);
1495 fKernelFound = true;
1499 if (fKernelFound || fShutdown)
1500 break; // if kernel is found stop searching
1502 if (nCredit == 0 || nCredit > nBalance - nReserveBalance)
1504 BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
1506 // Attempt to add more inputs
1507 // Only add coins of the same key/address as kernel
1508 if (txNew.vout.size() == 2 && ((pcoin.first->vout[pcoin.second].scriptPubKey == scriptPubKeyKernel || pcoin.first->vout[pcoin.second].scriptPubKey == txNew.vout[1].scriptPubKey))
1509 && pcoin.first->GetHash() != txNew.vin[0].prevout.hash)
1511 // Stop adding more inputs if already too many inputs
1512 if (txNew.vin.size() >= 100)
1514 // Stop adding more inputs if value is already pretty significant
1515 if (nCredit > nCombineThreshold)
1517 // Stop adding inputs if reached reserve limit
1518 if (nCredit + pcoin.first->vout[pcoin.second].nValue > nBalance - nReserveBalance)
1520 // Do not add additional significant input
1521 if (pcoin.first->vout[pcoin.second].nValue > nCombineThreshold)
1523 // Do not add input that is still too young
1524 if (pcoin.first->nTime + nStakeMaxAge > txNew.nTime)
1526 txNew.vin.push_back(CTxIn(pcoin.first->GetHash(), pcoin.second));
1527 nCredit += pcoin.first->vout[pcoin.second].nValue;
1528 vwtxPrev.push_back(pcoin.first);
1531 // Calculate coin age reward
1535 if (!txNew.GetCoinAge(txdb, nCoinAge))
1536 return error("CreateCoinStake : failed to calculate coin age");
1537 nCredit += GetProofOfStakeReward(nCoinAge, nBits, txNew.nTime);
1543 // Set output amount
1544 if (txNew.vout.size() == 3)
1546 txNew.vout[1].nValue = ((nCredit - nMinFee) / 2 / CENT) * CENT;
1547 txNew.vout[2].nValue = nCredit - nMinFee - txNew.vout[1].nValue;
1550 txNew.vout[1].nValue = nCredit - nMinFee;
1554 BOOST_FOREACH(const CWalletTx* pcoin, vwtxPrev)
1556 if (!SignSignature(*this, *pcoin, txNew, nIn++))
1557 return error("CreateCoinStake : failed to sign coinstake");
1561 unsigned int nBytes = ::GetSerializeSize(txNew, SER_NETWORK, PROTOCOL_VERSION);
1562 if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
1563 return error("CreateCoinStake : exceeded coinstake size limit");
1565 // Check enough fee is paid
1566 if (nMinFee < txNew.GetMinFee() - MIN_TX_FEE)
1568 nMinFee = txNew.GetMinFee() - MIN_TX_FEE;
1569 continue; // try signing again
1573 if (fDebug && GetBoolArg("-printfee"))
1574 printf("CreateCoinStake : fee for coinstake %s\n", FormatMoney(nMinFee).c_str());
1579 // Successfully generated coinstake
1584 // Call after CreateTransaction unless you want to abort
1585 bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
1588 LOCK2(cs_main, cs_wallet);
1589 printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
1591 // This is only to keep the database open to defeat the auto-flush for the
1592 // duration of this scope. This is the only place where this optimization
1593 // maybe makes sense; please don't do it anywhere else.
1594 CWalletDB* pwalletdb = fFileBacked ? new CWalletDB(strWalletFile,"r") : NULL;
1596 // Take key pair from key pool so it won't be used again
1597 reservekey.KeepKey();
1599 // Add tx to wallet, because if it has change it's also ours,
1600 // otherwise just for transaction history.
1601 AddToWallet(wtxNew);
1603 // Mark old coins as spent
1604 set<CWalletTx*> setCoins;
1605 BOOST_FOREACH(const CTxIn& txin, wtxNew.vin)
1607 CWalletTx &coin = mapWallet[txin.prevout.hash];
1608 coin.BindWallet(this);
1609 coin.MarkSpent(txin.prevout.n);
1611 NotifyTransactionChanged(this, coin.GetHash(), CT_UPDATED);
1618 // Track how many getdata requests our transaction gets
1619 mapRequestCount[wtxNew.GetHash()] = 0;
1622 if (!wtxNew.AcceptToMemoryPool())
1624 // This must not fail. The transaction has already been signed and recorded.
1625 printf("CommitTransaction() : Error: Transaction not valid");
1628 wtxNew.RelayWalletTransaction();
1636 string CWallet::SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
1638 CReserveKey reservekey(this);
1643 string strError = _("Error: Wallet locked, unable to create transaction ");
1644 printf("SendMoney() : %s", strError.c_str());
1647 if (fWalletUnlockMintOnly)
1649 string strError = _("Error: Wallet unlocked for block minting only, unable to create transaction.");
1650 printf("SendMoney() : %s", strError.c_str());
1653 if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired))
1656 if (nValue + nFeeRequired > GetBalance())
1657 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());
1659 strError = _("Error: Transaction creation failed ");
1660 printf("SendMoney() : %s", strError.c_str());
1664 if (fAskFee && !uiInterface.ThreadSafeAskFee(nFeeRequired, _("Sending...")))
1667 if (!CommitTransaction(wtxNew, reservekey))
1668 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.");
1675 string CWallet::SendMoneyToDestination(const CTxDestination& address, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
1679 return _("Invalid amount");
1680 if (nValue + nTransactionFee > GetBalance())
1681 return _("Insufficient funds");
1683 // Parse Bitcoin address
1684 CScript scriptPubKey;
1685 scriptPubKey.SetDestination(address);
1687 return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
1693 DBErrors CWallet::LoadWallet(bool& fFirstRunRet)
1697 fFirstRunRet = false;
1698 DBErrors nLoadWalletRet = CWalletDB(strWalletFile,"cr+").LoadWallet(this);
1699 if (nLoadWalletRet == DB_NEED_REWRITE)
1701 if (CDB::Rewrite(strWalletFile, "\x04pool"))
1704 // Note: can't top-up keypool here, because wallet is locked.
1705 // User will be prompted to unlock wallet the next operation
1706 // the requires a new key.
1710 if (nLoadWalletRet != DB_LOAD_OK)
1711 return nLoadWalletRet;
1712 fFirstRunRet = !vchDefaultKey.IsValid();
1714 NewThread(ThreadFlushWalletDB, &strWalletFile);
1719 bool CWallet::SetAddressBookName(const CTxDestination& address, const string& strName)
1721 std::map<CTxDestination, std::string>::iterator mi = mapAddressBook.find(address);
1722 mapAddressBook[address] = strName;
1723 NotifyAddressBookChanged(this, address, strName, ::IsMine(*this, address), (mi == mapAddressBook.end()) ? CT_NEW : CT_UPDATED);
1726 return CWalletDB(strWalletFile).WriteName(CBitcoinAddress(address).ToString(), strName);
1729 bool CWallet::DelAddressBookName(const CTxDestination& address)
1731 mapAddressBook.erase(address);
1732 NotifyAddressBookChanged(this, address, "", ::IsMine(*this, address), CT_DELETED);
1735 return CWalletDB(strWalletFile).EraseName(CBitcoinAddress(address).ToString());
1739 void CWallet::PrintWallet(const CBlock& block)
1743 if (block.IsProofOfWork() && mapWallet.count(block.vtx[0].GetHash()))
1745 CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];
1746 printf(" mine: %d %d %"PRI64d"", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit());
1748 if (block.IsProofOfStake() && mapWallet.count(block.vtx[1].GetHash()))
1750 CWalletTx& wtx = mapWallet[block.vtx[1].GetHash()];
1751 printf(" stake: %d %d %"PRI64d"", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit());
1758 bool CWallet::GetTransaction(const uint256 &hashTx, CWalletTx& wtx)
1762 map<uint256, CWalletTx>::iterator mi = mapWallet.find(hashTx);
1763 if (mi != mapWallet.end())
1772 bool CWallet::SetDefaultKey(const CPubKey &vchPubKey)
1776 if (!CWalletDB(strWalletFile).WriteDefaultKey(vchPubKey))
1779 vchDefaultKey = vchPubKey;
1783 bool GetWalletFile(CWallet* pwallet, string &strWalletFileOut)
1785 if (!pwallet->fFileBacked)
1787 strWalletFileOut = pwallet->strWalletFile;
1792 // Mark old keypool keys as used,
1793 // and generate all new keys
1795 bool CWallet::NewKeyPool()
1799 CWalletDB walletdb(strWalletFile);
1800 BOOST_FOREACH(int64 nIndex, setKeyPool)
1801 walletdb.ErasePool(nIndex);
1807 int64 nKeys = max(GetArg("-keypool", 100), (int64)0);
1808 for (int i = 0; i < nKeys; i++)
1811 walletdb.WritePool(nIndex, CKeyPool(GenerateNewKey()));
1812 setKeyPool.insert(nIndex);
1814 printf("CWallet::NewKeyPool wrote %"PRI64d" new keys\n", nKeys);
1819 bool CWallet::TopUpKeyPool()
1827 CWalletDB walletdb(strWalletFile);
1830 unsigned int nTargetSize = max(GetArg("-keypool", 100), 0LL);
1831 while (setKeyPool.size() < (nTargetSize + 1))
1834 if (!setKeyPool.empty())
1835 nEnd = *(--setKeyPool.end()) + 1;
1836 if (!walletdb.WritePool(nEnd, CKeyPool(GenerateNewKey())))
1837 throw runtime_error("TopUpKeyPool() : writing generated key failed");
1838 setKeyPool.insert(nEnd);
1839 printf("keypool added key %"PRI64d", size=%"PRIszu"\n", nEnd, setKeyPool.size());
1845 void CWallet::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool)
1848 keypool.vchPubKey = CPubKey();
1855 // Get the oldest key
1856 if(setKeyPool.empty())
1859 CWalletDB walletdb(strWalletFile);
1861 nIndex = *(setKeyPool.begin());
1862 setKeyPool.erase(setKeyPool.begin());
1863 if (!walletdb.ReadPool(nIndex, keypool))
1864 throw runtime_error("ReserveKeyFromKeyPool() : read failed");
1865 if (!HaveKey(keypool.vchPubKey.GetID()))
1866 throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
1867 assert(keypool.vchPubKey.IsValid());
1868 if (fDebug && GetBoolArg("-printkeypool"))
1869 printf("keypool reserve %"PRI64d"\n", nIndex);
1873 int64 CWallet::AddReserveKey(const CKeyPool& keypool)
1876 LOCK2(cs_main, cs_wallet);
1877 CWalletDB walletdb(strWalletFile);
1879 int64 nIndex = 1 + *(--setKeyPool.end());
1880 if (!walletdb.WritePool(nIndex, keypool))
1881 throw runtime_error("AddReserveKey() : writing added key failed");
1882 setKeyPool.insert(nIndex);
1888 void CWallet::KeepKey(int64 nIndex)
1890 // Remove from key pool
1893 CWalletDB walletdb(strWalletFile);
1894 walletdb.ErasePool(nIndex);
1897 printf("keypool keep %"PRI64d"\n", nIndex);
1900 void CWallet::ReturnKey(int64 nIndex)
1902 // Return to key pool
1905 setKeyPool.insert(nIndex);
1908 printf("keypool return %"PRI64d"\n", nIndex);
1911 bool CWallet::GetKeyFromPool(CPubKey& result, bool fAllowReuse)
1917 ReserveKeyFromKeyPool(nIndex, keypool);
1920 if (fAllowReuse && vchDefaultKey.IsValid())
1922 result = vchDefaultKey;
1925 if (IsLocked()) return false;
1926 result = GenerateNewKey();
1930 result = keypool.vchPubKey;
1935 int64 CWallet::GetOldestKeyPoolTime()
1939 ReserveKeyFromKeyPool(nIndex, keypool);
1943 return keypool.nTime;
1946 std::map<CTxDestination, int64> CWallet::GetAddressBalances()
1948 map<CTxDestination, int64> balances;
1952 BOOST_FOREACH(PAIRTYPE(uint256, CWalletTx) walletEntry, mapWallet)
1954 CWalletTx *pcoin = &walletEntry.second;
1956 if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
1959 if ((pcoin->IsCoinBase() || pcoin->IsCoinStake()) && pcoin->GetBlocksToMaturity() > 0)
1962 int nDepth = pcoin->GetDepthInMainChain();
1963 if (nDepth < (pcoin->IsFromMe() ? 0 : 1))
1966 for (unsigned int i = 0; i < pcoin->vout.size(); i++)
1968 CTxDestination addr;
1969 if (!IsMine(pcoin->vout[i]))
1971 if(!ExtractDestination(pcoin->vout[i].scriptPubKey, addr))
1974 int64 n = pcoin->IsSpent(i) ? 0 : pcoin->vout[i].nValue;
1976 if (!balances.count(addr))
1978 balances[addr] += n;
1986 set< set<CTxDestination> > CWallet::GetAddressGroupings()
1988 set< set<CTxDestination> > groupings;
1989 set<CTxDestination> grouping;
1991 BOOST_FOREACH(PAIRTYPE(uint256, CWalletTx) walletEntry, mapWallet)
1993 CWalletTx *pcoin = &walletEntry.second;
1995 if (pcoin->vin.size() > 0 && IsMine(pcoin->vin[0]))
1997 // group all input addresses with each other
1998 BOOST_FOREACH(CTxIn txin, pcoin->vin)
2000 CTxDestination address;
2001 if(!ExtractDestination(mapWallet[txin.prevout.hash].vout[txin.prevout.n].scriptPubKey, address))
2003 grouping.insert(address);
2006 // group change with input addresses
2007 BOOST_FOREACH(CTxOut txout, pcoin->vout)
2008 if (IsChange(txout))
2010 CWalletTx tx = mapWallet[pcoin->vin[0].prevout.hash];
2011 CTxDestination txoutAddr;
2012 if(!ExtractDestination(txout.scriptPubKey, txoutAddr))
2014 grouping.insert(txoutAddr);
2016 groupings.insert(grouping);
2020 // group lone addrs by themselves
2021 for (unsigned int i = 0; i < pcoin->vout.size(); i++)
2022 if (IsMine(pcoin->vout[i]))
2024 CTxDestination address;
2025 if(!ExtractDestination(pcoin->vout[i].scriptPubKey, address))
2027 grouping.insert(address);
2028 groupings.insert(grouping);
2033 set< set<CTxDestination>* > uniqueGroupings; // a set of pointers to groups of addresses
2034 map< CTxDestination, set<CTxDestination>* > setmap; // map addresses to the unique group containing it
2035 BOOST_FOREACH(set<CTxDestination> grouping, groupings)
2037 // make a set of all the groups hit by this new group
2038 set< set<CTxDestination>* > hits;
2039 map< CTxDestination, set<CTxDestination>* >::iterator it;
2040 BOOST_FOREACH(CTxDestination address, grouping)
2041 if ((it = setmap.find(address)) != setmap.end())
2042 hits.insert((*it).second);
2044 // merge all hit groups into a new single group and delete old groups
2045 set<CTxDestination>* merged = new set<CTxDestination>(grouping);
2046 BOOST_FOREACH(set<CTxDestination>* hit, hits)
2048 merged->insert(hit->begin(), hit->end());
2049 uniqueGroupings.erase(hit);
2052 uniqueGroupings.insert(merged);
2055 BOOST_FOREACH(CTxDestination element, *merged)
2056 setmap[element] = merged;
2059 set< set<CTxDestination> > ret;
2060 BOOST_FOREACH(set<CTxDestination>* uniqueGrouping, uniqueGroupings)
2062 ret.insert(*uniqueGrouping);
2063 delete uniqueGrouping;
2069 // ppcoin: check 'spent' consistency between wallet and txindex
2070 // ppcoin: fix wallet spent state according to txindex
2071 void CWallet::FixSpentCoins(int& nMismatchFound, int64& nBalanceInQuestion, bool fCheckOnly)
2074 nBalanceInQuestion = 0;
2077 vector<CWalletTx*> vCoins;
2078 vCoins.reserve(mapWallet.size());
2079 for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
2080 vCoins.push_back(&(*it).second);
2083 BOOST_FOREACH(CWalletTx* pcoin, vCoins)
2085 // Find the corresponding transaction index
2087 if (!txdb.ReadTxIndex(pcoin->GetHash(), txindex))
2089 for (unsigned int n=0; n < pcoin->vout.size(); n++)
2091 if (IsMine(pcoin->vout[n]) && pcoin->IsSpent(n) && (txindex.vSpent.size() <= n || txindex.vSpent[n].IsNull()))
2093 printf("FixSpentCoins found lost coin %sppc %s[%d], %s\n",
2094 FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n, fCheckOnly? "repair not attempted" : "repairing");
2096 nBalanceInQuestion += pcoin->vout[n].nValue;
2099 pcoin->MarkUnspent(n);
2100 pcoin->WriteToDisk();
2103 else if (IsMine(pcoin->vout[n]) && !pcoin->IsSpent(n) && (txindex.vSpent.size() > n && !txindex.vSpent[n].IsNull()))
2105 printf("FixSpentCoins found spent coin %sppc %s[%d], %s\n",
2106 FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n, fCheckOnly? "repair not attempted" : "repairing");
2108 nBalanceInQuestion += pcoin->vout[n].nValue;
2111 pcoin->MarkSpent(n);
2112 pcoin->WriteToDisk();
2119 // ppcoin: disable transaction (only for coinstake)
2120 void CWallet::DisableTransaction(const CTransaction &tx)
2122 if (!tx.IsCoinStake() || !IsFromMe(tx))
2123 return; // only disconnecting coinstake requires marking input unspent
2126 BOOST_FOREACH(const CTxIn& txin, tx.vin)
2128 map<uint256, CWalletTx>::iterator mi = mapWallet.find(txin.prevout.hash);
2129 if (mi != mapWallet.end())
2131 CWalletTx& prev = (*mi).second;
2132 if (txin.prevout.n < prev.vout.size() && IsMine(prev.vout[txin.prevout.n]))
2134 prev.MarkUnspent(txin.prevout.n);
2141 CPubKey CReserveKey::GetReservedKey()
2146 pwallet->ReserveKeyFromKeyPool(nIndex, keypool);
2148 vchPubKey = keypool.vchPubKey;
2151 printf("CReserveKey::GetReservedKey(): Warning: Using default key instead of a new key, top up your keypool!");
2152 vchPubKey = pwallet->vchDefaultKey;
2155 assert(vchPubKey.IsValid());
2159 void CReserveKey::KeepKey()
2162 pwallet->KeepKey(nIndex);
2164 vchPubKey = CPubKey();
2167 void CReserveKey::ReturnKey()
2170 pwallet->ReturnKey(nIndex);
2172 vchPubKey = CPubKey();
2175 void CWallet::GetAllReserveKeys(set<CKeyID>& setAddress)
2179 CWalletDB walletdb(strWalletFile);
2181 LOCK2(cs_main, cs_wallet);
2182 BOOST_FOREACH(const int64& id, setKeyPool)
2185 if (!walletdb.ReadPool(id, keypool))
2186 throw runtime_error("GetAllReserveKeyHashes() : read failed");
2187 assert(keypool.vchPubKey.IsValid());
2188 CKeyID keyID = keypool.vchPubKey.GetID();
2189 if (!HaveKey(keyID))
2190 throw runtime_error("GetAllReserveKeyHashes() : unknown key in key pool");
2191 setAddress.insert(keyID);
2195 void CWallet::UpdatedTransaction(const uint256 &hashTx)
2199 // Only notify UI if this transaction is in this wallet
2200 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(hashTx);
2201 if (mi != mapWallet.end())
2202 NotifyTransactionChanged(this, hashTx, CT_UPDATED);