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1057 lines
33 KiB
1057 lines
33 KiB
14 years ago
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// Copyright (c) 2009-2011 Satoshi Nakamoto & Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file license.txt or http://www.opensource.org/licenses/mit-license.php.
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#include "headers.h"
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#include "db.h"
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#include "cryptopp/sha.h"
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using namespace std;
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//////////////////////////////////////////////////////////////////////////////
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//
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// mapWallet
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//
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void WalletUpdateSpent(const COutPoint& prevout)
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{
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// Anytime a signature is successfully verified, it's proof the outpoint is spent.
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// Update the wallet spent flag if it doesn't know due to wallet.dat being
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// restored from backup or the user making copies of wallet.dat.
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CRITICAL_BLOCK(cs_mapWallet)
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{
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map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
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if (mi != mapWallet.end())
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{
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CWalletTx& wtx = (*mi).second;
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if (!wtx.IsSpent(prevout.n) && wtx.vout[prevout.n].IsMine())
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{
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printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
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wtx.MarkSpent(prevout.n);
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wtx.WriteToDisk();
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vWalletUpdated.push_back(prevout.hash);
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}
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}
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}
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}
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bool AddToWallet(const CWalletTx& wtxIn)
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{
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uint256 hash = wtxIn.GetHash();
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CRITICAL_BLOCK(cs_mapWallet)
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{
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// Inserts only if not already there, returns tx inserted or tx found
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pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
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CWalletTx& wtx = (*ret.first).second;
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bool fInsertedNew = ret.second;
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if (fInsertedNew)
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wtx.nTimeReceived = GetAdjustedTime();
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bool fUpdated = false;
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if (!fInsertedNew)
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{
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// Merge
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if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
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{
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wtx.hashBlock = wtxIn.hashBlock;
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fUpdated = true;
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}
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if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
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{
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wtx.vMerkleBranch = wtxIn.vMerkleBranch;
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wtx.nIndex = wtxIn.nIndex;
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fUpdated = true;
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}
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if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
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{
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wtx.fFromMe = wtxIn.fFromMe;
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fUpdated = true;
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}
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fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
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}
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//// debug print
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printf("AddToWallet %s %s%s\n", wtxIn.GetHash().ToString().substr(0,10).c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
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// Write to disk
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if (fInsertedNew || fUpdated)
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if (!wtx.WriteToDisk())
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return false;
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// If default receiving address gets used, replace it with a new one
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CScript scriptDefaultKey;
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scriptDefaultKey.SetBitcoinAddress(vchDefaultKey);
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BOOST_FOREACH(const CTxOut& txout, wtx.vout)
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{
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if (txout.scriptPubKey == scriptDefaultKey)
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{
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CWalletDB walletdb;
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vchDefaultKey = GetKeyFromKeyPool();
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walletdb.WriteDefaultKey(vchDefaultKey);
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walletdb.WriteName(PubKeyToAddress(vchDefaultKey), "");
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}
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}
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// Notify UI
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vWalletUpdated.push_back(hash);
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}
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// Refresh UI
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MainFrameRepaint();
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return true;
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}
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bool AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
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{
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uint256 hash = tx.GetHash();
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bool fExisted = mapWallet.count(hash);
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if (fExisted && !fUpdate) return false;
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if (fExisted || tx.IsMine() || tx.IsFromMe())
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{
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CWalletTx wtx(tx);
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// Get merkle branch if transaction was found in a block
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if (pblock)
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wtx.SetMerkleBranch(pblock);
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return AddToWallet(wtx);
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}
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return false;
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}
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bool EraseFromWallet(uint256 hash)
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{
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CRITICAL_BLOCK(cs_mapWallet)
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{
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if (mapWallet.erase(hash))
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CWalletDB().EraseTx(hash);
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}
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return true;
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}
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bool CTxIn::IsMine() const
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{
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CRITICAL_BLOCK(cs_mapWallet)
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{
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map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
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if (mi != mapWallet.end())
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{
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const CWalletTx& prev = (*mi).second;
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if (prevout.n < prev.vout.size())
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if (prev.vout[prevout.n].IsMine())
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return true;
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}
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}
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return false;
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}
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int64 CTxIn::GetDebit() const
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{
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CRITICAL_BLOCK(cs_mapWallet)
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{
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map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
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if (mi != mapWallet.end())
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{
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const CWalletTx& prev = (*mi).second;
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if (prevout.n < prev.vout.size())
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if (prev.vout[prevout.n].IsMine())
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return prev.vout[prevout.n].nValue;
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}
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}
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return 0;
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}
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int64 CWalletTx::GetTxTime() const
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{
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if (!fTimeReceivedIsTxTime && hashBlock != 0)
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{
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// If we did not receive the transaction directly, we rely on the block's
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// time to figure out when it happened. We use the median over a range
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// of blocks to try to filter out inaccurate block times.
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map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
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if (mi != mapBlockIndex.end())
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{
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CBlockIndex* pindex = (*mi).second;
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if (pindex)
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return pindex->GetMedianTime();
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}
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}
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return nTimeReceived;
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}
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int CWalletTx::GetRequestCount() const
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{
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// Returns -1 if it wasn't being tracked
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int nRequests = -1;
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CRITICAL_BLOCK(cs_mapRequestCount)
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{
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if (IsCoinBase())
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{
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// Generated block
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if (hashBlock != 0)
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{
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map<uint256, int>::iterator mi = mapRequestCount.find(hashBlock);
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if (mi != mapRequestCount.end())
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nRequests = (*mi).second;
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}
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}
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else
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{
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// Did anyone request this transaction?
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map<uint256, int>::iterator mi = mapRequestCount.find(GetHash());
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if (mi != mapRequestCount.end())
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{
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nRequests = (*mi).second;
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// How about the block it's in?
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if (nRequests == 0 && hashBlock != 0)
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{
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map<uint256, int>::iterator mi = mapRequestCount.find(hashBlock);
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if (mi != mapRequestCount.end())
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nRequests = (*mi).second;
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else
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nRequests = 1; // If it's in someone else's block it must have got out
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}
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}
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}
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}
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return nRequests;
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}
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void CWalletTx::GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, list<pair<string, int64> >& listReceived,
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list<pair<string, int64> >& listSent, int64& nFee, string& strSentAccount) const
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{
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nGeneratedImmature = nGeneratedMature = nFee = 0;
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listReceived.clear();
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listSent.clear();
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strSentAccount = strFromAccount;
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if (IsCoinBase())
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{
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if (GetBlocksToMaturity() > 0)
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nGeneratedImmature = CTransaction::GetCredit();
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else
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nGeneratedMature = GetCredit();
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return;
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}
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// Compute fee:
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int64 nDebit = GetDebit();
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if (nDebit > 0) // debit>0 means we signed/sent this transaction
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{
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int64 nValueOut = GetValueOut();
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nFee = nDebit - nValueOut;
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}
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// Sent/received. Standard client will never generate a send-to-multiple-recipients,
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// but non-standard clients might (so return a list of address/amount pairs)
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BOOST_FOREACH(const CTxOut& txout, vout)
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{
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string address;
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uint160 hash160;
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vector<unsigned char> vchPubKey;
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if (ExtractHash160(txout.scriptPubKey, hash160))
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address = Hash160ToAddress(hash160);
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else if (ExtractPubKey(txout.scriptPubKey, false, vchPubKey))
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address = PubKeyToAddress(vchPubKey);
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else
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{
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printf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
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this->GetHash().ToString().c_str());
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address = " unknown ";
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}
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// Don't report 'change' txouts
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if (nDebit > 0 && txout.IsChange())
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continue;
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if (nDebit > 0)
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listSent.push_back(make_pair(address, txout.nValue));
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if (txout.IsMine())
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listReceived.push_back(make_pair(address, txout.nValue));
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}
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}
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void CWalletTx::GetAccountAmounts(const string& strAccount, int64& nGenerated, int64& nReceived,
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int64& nSent, int64& nFee) const
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{
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nGenerated = nReceived = nSent = nFee = 0;
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int64 allGeneratedImmature, allGeneratedMature, allFee;
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allGeneratedImmature = allGeneratedMature = allFee = 0;
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string strSentAccount;
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list<pair<string, int64> > listReceived;
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list<pair<string, int64> > listSent;
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GetAmounts(allGeneratedImmature, allGeneratedMature, listReceived, listSent, allFee, strSentAccount);
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if (strAccount == "")
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nGenerated = allGeneratedMature;
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if (strAccount == strSentAccount)
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{
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BOOST_FOREACH(const PAIRTYPE(string,int64)& s, listSent)
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nSent += s.second;
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nFee = allFee;
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}
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CRITICAL_BLOCK(cs_mapAddressBook)
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{
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BOOST_FOREACH(const PAIRTYPE(string,int64)& r, listReceived)
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{
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if (mapAddressBook.count(r.first))
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{
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if (mapAddressBook[r.first] == strAccount)
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{
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nReceived += r.second;
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}
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}
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else if (strAccount.empty())
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{
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nReceived += r.second;
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}
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}
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||
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}
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}
|
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||
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void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
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||
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{
|
||
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vtxPrev.clear();
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||
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||
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const int COPY_DEPTH = 3;
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||
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if (SetMerkleBranch() < COPY_DEPTH)
|
||
|
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{
|
||
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vector<uint256> vWorkQueue;
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BOOST_FOREACH(const CTxIn& txin, vin)
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vWorkQueue.push_back(txin.prevout.hash);
|
||
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||
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// This critsect is OK because txdb is already open
|
||
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CRITICAL_BLOCK(cs_mapWallet)
|
||
|
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{
|
||
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map<uint256, const CMerkleTx*> mapWalletPrev;
|
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set<uint256> setAlreadyDone;
|
||
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for (int i = 0; i < vWorkQueue.size(); i++)
|
||
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{
|
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uint256 hash = vWorkQueue[i];
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||
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if (setAlreadyDone.count(hash))
|
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continue;
|
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setAlreadyDone.insert(hash);
|
||
|
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|
||
|
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CMerkleTx tx;
|
||
|
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if (mapWallet.count(hash))
|
||
|
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{
|
||
|
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tx = mapWallet[hash];
|
||
|
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BOOST_FOREACH(const CMerkleTx& txWalletPrev, mapWallet[hash].vtxPrev)
|
||
|
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mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
|
||
|
|
}
|
||
|
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else if (mapWalletPrev.count(hash))
|
||
|
|
{
|
||
|
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tx = *mapWalletPrev[hash];
|
||
|
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}
|
||
|
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else if (!fClient && txdb.ReadDiskTx(hash, tx))
|
||
|
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{
|
||
|
|
;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
|
||
|
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continue;
|
||
|
|
}
|
||
|
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|
||
|
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int nDepth = tx.SetMerkleBranch();
|
||
|
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vtxPrev.push_back(tx);
|
||
|
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|
||
|
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if (nDepth < COPY_DEPTH)
|
||
|
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BOOST_FOREACH(const CTxIn& txin, tx.vin)
|
||
|
|
vWorkQueue.push_back(txin.prevout.hash);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
reverse(vtxPrev.begin(), vtxPrev.end());
|
||
|
|
}
|
||
|
|
|
||
|
|
bool CWalletTx::WriteToDisk()
|
||
|
|
{
|
||
|
|
return CWalletDB().WriteTx(GetHash(), *this);
|
||
|
|
}
|
||
|
|
|
||
|
|
int ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
|
||
|
|
{
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
CBlockIndex* pindex = pindexStart;
|
||
|
|
CRITICAL_BLOCK(cs_mapWallet)
|
||
|
|
{
|
||
|
|
while (pindex)
|
||
|
|
{
|
||
|
|
CBlock block;
|
||
|
|
block.ReadFromDisk(pindex, true);
|
||
|
|
BOOST_FOREACH(CTransaction& tx, block.vtx)
|
||
|
|
{
|
||
|
|
if (AddToWalletIfInvolvingMe(tx, &block, fUpdate))
|
||
|
|
ret++;
|
||
|
|
}
|
||
|
|
pindex = pindex->pnext;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
void ReacceptWalletTransactions()
|
||
|
|
{
|
||
|
|
CTxDB txdb("r");
|
||
|
|
bool fRepeat = true;
|
||
|
|
while (fRepeat) CRITICAL_BLOCK(cs_mapWallet)
|
||
|
|
{
|
||
|
|
fRepeat = false;
|
||
|
|
vector<CDiskTxPos> vMissingTx;
|
||
|
|
BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
|
||
|
|
{
|
||
|
|
CWalletTx& wtx = item.second;
|
||
|
|
if (wtx.IsCoinBase() && wtx.IsSpent(0))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
CTxIndex txindex;
|
||
|
|
bool fUpdated = false;
|
||
|
|
if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
|
||
|
|
{
|
||
|
|
// Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
|
||
|
|
if (txindex.vSpent.size() != wtx.vout.size())
|
||
|
|
{
|
||
|
|
printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %d != wtx.vout.size() %d\n", txindex.vSpent.size(), wtx.vout.size());
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
for (int i = 0; i < txindex.vSpent.size(); i++)
|
||
|
|
{
|
||
|
|
if (wtx.IsSpent(i))
|
||
|
|
continue;
|
||
|
|
if (!txindex.vSpent[i].IsNull() && wtx.vout[i].IsMine())
|
||
|
|
{
|
||
|
|
wtx.MarkSpent(i);
|
||
|
|
fUpdated = true;
|
||
|
|
vMissingTx.push_back(txindex.vSpent[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (fUpdated)
|
||
|
|
{
|
||
|
|
printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
|
||
|
|
wtx.MarkDirty();
|
||
|
|
wtx.WriteToDisk();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// Reaccept any txes of ours that aren't already in a block
|
||
|
|
if (!wtx.IsCoinBase())
|
||
|
|
wtx.AcceptWalletTransaction(txdb, false);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!vMissingTx.empty())
|
||
|
|
{
|
||
|
|
// TODO: optimize this to scan just part of the block chain?
|
||
|
|
if (ScanForWalletTransactions(pindexGenesisBlock))
|
||
|
|
fRepeat = true; // Found missing transactions: re-do Reaccept.
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
|
||
|
|
{
|
||
|
|
BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
|
||
|
|
{
|
||
|
|
if (!tx.IsCoinBase())
|
||
|
|
{
|
||
|
|
uint256 hash = tx.GetHash();
|
||
|
|
if (!txdb.ContainsTx(hash))
|
||
|
|
RelayMessage(CInv(MSG_TX, hash), (CTransaction)tx);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!IsCoinBase())
|
||
|
|
{
|
||
|
|
uint256 hash = GetHash();
|
||
|
|
if (!txdb.ContainsTx(hash))
|
||
|
|
{
|
||
|
|
printf("Relaying wtx %s\n", hash.ToString().substr(0,10).c_str());
|
||
|
|
RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void CWalletTx::RelayWalletTransaction()
|
||
|
|
{
|
||
|
|
CTxDB txdb("r");
|
||
|
|
RelayWalletTransaction(txdb);
|
||
|
|
}
|
||
|
|
|
||
|
|
void ResendWalletTransactions()
|
||
|
|
{
|
||
|
|
// Do this infrequently and randomly to avoid giving away
|
||
|
|
// that these are our transactions.
|
||
|
|
static int64 nNextTime;
|
||
|
|
if (GetTime() < nNextTime)
|
||
|
|
return;
|
||
|
|
bool fFirst = (nNextTime == 0);
|
||
|
|
nNextTime = GetTime() + GetRand(30 * 60);
|
||
|
|
if (fFirst)
|
||
|
|
return;
|
||
|
|
|
||
|
|
// Only do it if there's been a new block since last time
|
||
|
|
static int64 nLastTime;
|
||
|
|
if (nTimeBestReceived < nLastTime)
|
||
|
|
return;
|
||
|
|
nLastTime = GetTime();
|
||
|
|
|
||
|
|
// Rebroadcast any of our txes that aren't in a block yet
|
||
|
|
printf("ResendWalletTransactions()\n");
|
||
|
|
CTxDB txdb("r");
|
||
|
|
CRITICAL_BLOCK(cs_mapWallet)
|
||
|
|
{
|
||
|
|
// Sort them in chronological order
|
||
|
|
multimap<unsigned int, CWalletTx*> mapSorted;
|
||
|
|
BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
|
||
|
|
{
|
||
|
|
CWalletTx& wtx = item.second;
|
||
|
|
// Don't rebroadcast until it's had plenty of time that
|
||
|
|
// it should have gotten in already by now.
|
||
|
|
if (nTimeBestReceived - (int64)wtx.nTimeReceived > 5 * 60)
|
||
|
|
mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
|
||
|
|
}
|
||
|
|
BOOST_FOREACH(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
|
||
|
|
{
|
||
|
|
CWalletTx& wtx = *item.second;
|
||
|
|
wtx.RelayWalletTransaction(txdb);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// Actions
|
||
|
|
//
|
||
|
|
|
||
|
|
|
||
|
|
int64 GetBalance()
|
||
|
|
{
|
||
|
|
int64 nStart = GetTimeMillis();
|
||
|
|
|
||
|
|
int64 nTotal = 0;
|
||
|
|
CRITICAL_BLOCK(cs_mapWallet)
|
||
|
|
{
|
||
|
|
for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
|
||
|
|
{
|
||
|
|
CWalletTx* pcoin = &(*it).second;
|
||
|
|
if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
|
||
|
|
continue;
|
||
|
|
nTotal += pcoin->GetAvailableCredit();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//printf("GetBalance() %"PRI64d"ms\n", GetTimeMillis() - nStart);
|
||
|
|
return nTotal;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
bool SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<pair<CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet)
|
||
|
|
{
|
||
|
|
setCoinsRet.clear();
|
||
|
|
nValueRet = 0;
|
||
|
|
|
||
|
|
// List of values less than target
|
||
|
|
pair<int64, pair<CWalletTx*,unsigned int> > coinLowestLarger;
|
||
|
|
coinLowestLarger.first = INT64_MAX;
|
||
|
|
coinLowestLarger.second.first = NULL;
|
||
|
|
vector<pair<int64, pair<CWalletTx*,unsigned int> > > vValue;
|
||
|
|
int64 nTotalLower = 0;
|
||
|
|
|
||
|
|
CRITICAL_BLOCK(cs_mapWallet)
|
||
|
|
{
|
||
|
|
vector<CWalletTx*> vCoins;
|
||
|
|
vCoins.reserve(mapWallet.size());
|
||
|
|
for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
|
||
|
|
vCoins.push_back(&(*it).second);
|
||
|
|
random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
|
||
|
|
|
||
|
|
BOOST_FOREACH(CWalletTx* pcoin, vCoins)
|
||
|
|
{
|
||
|
|
if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
|
||
|
|
continue;
|
||
|
|
|
||
|
|
if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
int nDepth = pcoin->GetDepthInMainChain();
|
||
|
|
if (nDepth < (pcoin->IsFromMe() ? nConfMine : nConfTheirs))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
for (int i = 0; i < pcoin->vout.size(); i++)
|
||
|
|
{
|
||
|
|
if (pcoin->IsSpent(i) || !pcoin->vout[i].IsMine())
|
||
|
|
continue;
|
||
|
|
|
||
|
|
int64 n = pcoin->vout[i].nValue;
|
||
|
|
|
||
|
|
if (n <= 0)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
pair<int64,pair<CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin,i));
|
||
|
|
|
||
|
|
if (n == nTargetValue)
|
||
|
|
{
|
||
|
|
setCoinsRet.insert(coin.second);
|
||
|
|
nValueRet += coin.first;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
else if (n < nTargetValue + CENT)
|
||
|
|
{
|
||
|
|
vValue.push_back(coin);
|
||
|
|
nTotalLower += n;
|
||
|
|
}
|
||
|
|
else if (n < coinLowestLarger.first)
|
||
|
|
{
|
||
|
|
coinLowestLarger = coin;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (nTotalLower == nTargetValue || nTotalLower == nTargetValue + CENT)
|
||
|
|
{
|
||
|
|
for (int i = 0; i < vValue.size(); ++i)
|
||
|
|
{
|
||
|
|
setCoinsRet.insert(vValue[i].second);
|
||
|
|
nValueRet += vValue[i].first;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (nTotalLower < nTargetValue + (coinLowestLarger.second.first ? CENT : 0))
|
||
|
|
{
|
||
|
|
if (coinLowestLarger.second.first == NULL)
|
||
|
|
return false;
|
||
|
|
setCoinsRet.insert(coinLowestLarger.second);
|
||
|
|
nValueRet += coinLowestLarger.first;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (nTotalLower >= nTargetValue + CENT)
|
||
|
|
nTargetValue += CENT;
|
||
|
|
|
||
|
|
// Solve subset sum by stochastic approximation
|
||
|
|
sort(vValue.rbegin(), vValue.rend());
|
||
|
|
vector<char> vfIncluded;
|
||
|
|
vector<char> vfBest(vValue.size(), true);
|
||
|
|
int64 nBest = nTotalLower;
|
||
|
|
|
||
|
|
for (int nRep = 0; nRep < 1000 && nBest != nTargetValue; nRep++)
|
||
|
|
{
|
||
|
|
vfIncluded.assign(vValue.size(), false);
|
||
|
|
int64 nTotal = 0;
|
||
|
|
bool fReachedTarget = false;
|
||
|
|
for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
|
||
|
|
{
|
||
|
|
for (int i = 0; i < vValue.size(); i++)
|
||
|
|
{
|
||
|
|
if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
|
||
|
|
{
|
||
|
|
nTotal += vValue[i].first;
|
||
|
|
vfIncluded[i] = true;
|
||
|
|
if (nTotal >= nTargetValue)
|
||
|
|
{
|
||
|
|
fReachedTarget = true;
|
||
|
|
if (nTotal < nBest)
|
||
|
|
{
|
||
|
|
nBest = nTotal;
|
||
|
|
vfBest = vfIncluded;
|
||
|
|
}
|
||
|
|
nTotal -= vValue[i].first;
|
||
|
|
vfIncluded[i] = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// If the next larger is still closer, return it
|
||
|
|
if (coinLowestLarger.second.first && coinLowestLarger.first - nTargetValue <= nBest - nTargetValue)
|
||
|
|
{
|
||
|
|
setCoinsRet.insert(coinLowestLarger.second);
|
||
|
|
nValueRet += coinLowestLarger.first;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
for (int i = 0; i < vValue.size(); i++)
|
||
|
|
if (vfBest[i])
|
||
|
|
{
|
||
|
|
setCoinsRet.insert(vValue[i].second);
|
||
|
|
nValueRet += vValue[i].first;
|
||
|
|
}
|
||
|
|
|
||
|
|
//// debug print
|
||
|
|
printf("SelectCoins() best subset: ");
|
||
|
|
for (int i = 0; i < vValue.size(); i++)
|
||
|
|
if (vfBest[i])
|
||
|
|
printf("%s ", FormatMoney(vValue[i].first).c_str());
|
||
|
|
printf("total %s\n", FormatMoney(nBest).c_str());
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool SelectCoins(int64 nTargetValue, set<pair<CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet)
|
||
|
|
{
|
||
|
|
return (SelectCoinsMinConf(nTargetValue, 1, 6, setCoinsRet, nValueRet) ||
|
||
|
|
SelectCoinsMinConf(nTargetValue, 1, 1, setCoinsRet, nValueRet) ||
|
||
|
|
SelectCoinsMinConf(nTargetValue, 0, 1, setCoinsRet, nValueRet));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
bool CreateTransaction(const vector<pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
|
||
|
|
{
|
||
|
|
int64 nValue = 0;
|
||
|
|
BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
|
||
|
|
{
|
||
|
|
if (nValue < 0)
|
||
|
|
return false;
|
||
|
|
nValue += s.second;
|
||
|
|
}
|
||
|
|
if (vecSend.empty() || nValue < 0)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
CRITICAL_BLOCK(cs_main)
|
||
|
|
{
|
||
|
|
// txdb must be opened before the mapWallet lock
|
||
|
|
CTxDB txdb("r");
|
||
|
|
CRITICAL_BLOCK(cs_mapWallet)
|
||
|
|
{
|
||
|
|
nFeeRet = nTransactionFee;
|
||
|
|
loop
|
||
|
|
{
|
||
|
|
wtxNew.vin.clear();
|
||
|
|
wtxNew.vout.clear();
|
||
|
|
wtxNew.fFromMe = true;
|
||
|
|
|
||
|
|
int64 nTotalValue = nValue + nFeeRet;
|
||
|
|
double dPriority = 0;
|
||
|
|
// vouts to the payees
|
||
|
|
BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
|
||
|
|
wtxNew.vout.push_back(CTxOut(s.second, s.first));
|
||
|
|
|
||
|
|
// Choose coins to use
|
||
|
|
set<pair<CWalletTx*,unsigned int> > setCoins;
|
||
|
|
int64 nValueIn = 0;
|
||
|
|
if (!SelectCoins(nTotalValue, setCoins, nValueIn))
|
||
|
|
return false;
|
||
|
|
BOOST_FOREACH(PAIRTYPE(CWalletTx*, unsigned int) pcoin, setCoins)
|
||
|
|
{
|
||
|
|
int64 nCredit = pcoin.first->vout[pcoin.second].nValue;
|
||
|
|
dPriority += (double)nCredit * pcoin.first->GetDepthInMainChain();
|
||
|
|
}
|
||
|
|
|
||
|
|
// Fill a vout back to self with any change
|
||
|
|
int64 nChange = nValueIn - nTotalValue;
|
||
|
|
if (nChange >= CENT)
|
||
|
|
{
|
||
|
|
// Note: We use a new key here to keep it from being obvious which side is the change.
|
||
|
|
// The drawback is that by not reusing a previous key, the change may be lost if a
|
||
|
|
// backup is restored, if the backup doesn't have the new private key for the change.
|
||
|
|
// If we reused the old key, it would be possible to add code to look for and
|
||
|
|
// rediscover unknown transactions that were written with keys of ours to recover
|
||
|
|
// post-backup change.
|
||
|
|
|
||
|
|
// Reserve a new key pair from key pool
|
||
|
|
vector<unsigned char> vchPubKey = reservekey.GetReservedKey();
|
||
|
|
assert(mapKeys.count(vchPubKey));
|
||
|
|
|
||
|
|
// Fill a vout to ourself, using same address type as the payment
|
||
|
|
CScript scriptChange;
|
||
|
|
if (vecSend[0].first.GetBitcoinAddressHash160() != 0)
|
||
|
|
scriptChange.SetBitcoinAddress(vchPubKey);
|
||
|
|
else
|
||
|
|
scriptChange << vchPubKey << OP_CHECKSIG;
|
||
|
|
|
||
|
|
// Insert change txn at random position:
|
||
|
|
vector<CTxOut>::iterator position = wtxNew.vout.begin()+GetRandInt(wtxNew.vout.size());
|
||
|
|
wtxNew.vout.insert(position, CTxOut(nChange, scriptChange));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
reservekey.ReturnKey();
|
||
|
|
|
||
|
|
// Fill vin
|
||
|
|
BOOST_FOREACH(const PAIRTYPE(CWalletTx*,unsigned int)& coin, setCoins)
|
||
|
|
wtxNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second));
|
||
|
|
|
||
|
|
// Sign
|
||
|
|
int nIn = 0;
|
||
|
|
BOOST_FOREACH(const PAIRTYPE(CWalletTx*,unsigned int)& coin, setCoins)
|
||
|
|
if (!SignSignature(*coin.first, wtxNew, nIn++))
|
||
|
|
return false;
|
||
|
|
|
||
|
|
// Limit size
|
||
|
|
unsigned int nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK);
|
||
|
|
if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
|
||
|
|
return false;
|
||
|
|
dPriority /= nBytes;
|
||
|
|
|
||
|
|
// Check that enough fee is included
|
||
|
|
int64 nPayFee = nTransactionFee * (1 + (int64)nBytes / 1000);
|
||
|
|
bool fAllowFree = CTransaction::AllowFree(dPriority);
|
||
|
|
int64 nMinFee = wtxNew.GetMinFee(1, fAllowFree);
|
||
|
|
if (nFeeRet < max(nPayFee, nMinFee))
|
||
|
|
{
|
||
|
|
nFeeRet = max(nPayFee, nMinFee);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Fill vtxPrev by copying from previous transactions vtxPrev
|
||
|
|
wtxNew.AddSupportingTransactions(txdb);
|
||
|
|
wtxNew.fTimeReceivedIsTxTime = true;
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
|
||
|
|
{
|
||
|
|
vector< pair<CScript, int64> > vecSend;
|
||
|
|
vecSend.push_back(make_pair(scriptPubKey, nValue));
|
||
|
|
return CreateTransaction(vecSend, wtxNew, reservekey, nFeeRet);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Call after CreateTransaction unless you want to abort
|
||
|
|
bool CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
|
||
|
|
{
|
||
|
|
CRITICAL_BLOCK(cs_main)
|
||
|
|
{
|
||
|
|
printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
|
||
|
|
CRITICAL_BLOCK(cs_mapWallet)
|
||
|
|
{
|
||
|
|
// This is only to keep the database open to defeat the auto-flush for the
|
||
|
|
// duration of this scope. This is the only place where this optimization
|
||
|
|
// maybe makes sense; please don't do it anywhere else.
|
||
|
|
CWalletDB walletdb("r");
|
||
|
|
|
||
|
|
// Take key pair from key pool so it won't be used again
|
||
|
|
reservekey.KeepKey();
|
||
|
|
|
||
|
|
// Add tx to wallet, because if it has change it's also ours,
|
||
|
|
// otherwise just for transaction history.
|
||
|
|
AddToWallet(wtxNew);
|
||
|
|
|
||
|
|
// Mark old coins as spent
|
||
|
|
set<CWalletTx*> setCoins;
|
||
|
|
BOOST_FOREACH(const CTxIn& txin, wtxNew.vin)
|
||
|
|
{
|
||
|
|
CWalletTx &pcoin = mapWallet[txin.prevout.hash];
|
||
|
|
pcoin.MarkSpent(txin.prevout.n);
|
||
|
|
pcoin.WriteToDisk();
|
||
|
|
vWalletUpdated.push_back(pcoin.GetHash());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Track how many getdata requests our transaction gets
|
||
|
|
CRITICAL_BLOCK(cs_mapRequestCount)
|
||
|
|
mapRequestCount[wtxNew.GetHash()] = 0;
|
||
|
|
|
||
|
|
// Broadcast
|
||
|
|
if (!wtxNew.AcceptToMemoryPool())
|
||
|
|
{
|
||
|
|
// This must not fail. The transaction has already been signed and recorded.
|
||
|
|
printf("CommitTransaction() : Error: Transaction not valid");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
wtxNew.RelayWalletTransaction();
|
||
|
|
}
|
||
|
|
MainFrameRepaint();
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
// requires cs_main lock
|
||
|
|
string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
|
||
|
|
{
|
||
|
|
CReserveKey reservekey;
|
||
|
|
int64 nFeeRequired;
|
||
|
|
if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired))
|
||
|
|
{
|
||
|
|
string strError;
|
||
|
|
if (nValue + nFeeRequired > GetBalance())
|
||
|
|
strError = strprintf(_("Error: This transaction requires a transaction fee of at least %s because of its amount, complexity, or use of recently received funds "), FormatMoney(nFeeRequired).c_str());
|
||
|
|
else
|
||
|
|
strError = _("Error: Transaction creation failed ");
|
||
|
|
printf("SendMoney() : %s", strError.c_str());
|
||
|
|
return strError;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL))
|
||
|
|
return "ABORTED";
|
||
|
|
|
||
|
|
if (!CommitTransaction(wtxNew, reservekey))
|
||
|
|
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.");
|
||
|
|
|
||
|
|
MainFrameRepaint();
|
||
|
|
return "";
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
// requires cs_main lock
|
||
|
|
string SendMoneyToBitcoinAddress(string strAddress, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
|
||
|
|
{
|
||
|
|
// Check amount
|
||
|
|
if (nValue <= 0)
|
||
|
|
return _("Invalid amount");
|
||
|
|
if (nValue + nTransactionFee > GetBalance())
|
||
|
|
return _("Insufficient funds");
|
||
|
|
|
||
|
|
// Parse bitcoin address
|
||
|
|
CScript scriptPubKey;
|
||
|
|
if (!scriptPubKey.SetBitcoinAddress(strAddress))
|
||
|
|
return _("Invalid bitcoin address");
|
||
|
|
|
||
|
|
return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
bool LoadWallet(bool& fFirstRunRet)
|
||
|
|
{
|
||
|
|
fFirstRunRet = false;
|
||
|
|
if (!CWalletDB("cr+").LoadWallet())
|
||
|
|
return false;
|
||
|
|
fFirstRunRet = vchDefaultKey.empty();
|
||
|
|
|
||
|
|
if (mapKeys.count(vchDefaultKey))
|
||
|
|
{
|
||
|
|
// Set keyUser
|
||
|
|
keyUser.SetPubKey(vchDefaultKey);
|
||
|
|
keyUser.SetPrivKey(mapKeys[vchDefaultKey]);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// Create new keyUser and set as default key
|
||
|
|
RandAddSeedPerfmon();
|
||
|
|
|
||
|
|
CWalletDB walletdb;
|
||
|
|
vchDefaultKey = GetKeyFromKeyPool();
|
||
|
|
walletdb.WriteDefaultKey(vchDefaultKey);
|
||
|
|
walletdb.WriteName(PubKeyToAddress(vchDefaultKey), "");
|
||
|
|
}
|
||
|
|
|
||
|
|
CreateThread(ThreadFlushWalletDB, NULL);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
void CWalletDB::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool)
|
||
|
|
{
|
||
|
|
nIndex = -1;
|
||
|
|
keypool.vchPubKey.clear();
|
||
|
|
CRITICAL_BLOCK(cs_main)
|
||
|
|
CRITICAL_BLOCK(cs_mapWallet)
|
||
|
|
CRITICAL_BLOCK(cs_setKeyPool)
|
||
|
|
{
|
||
|
|
// Top up key pool
|
||
|
|
int64 nTargetSize = max(GetArg("-keypool", 100), (int64)0);
|
||
|
|
while (setKeyPool.size() < nTargetSize+1)
|
||
|
|
{
|
||
|
|
int64 nEnd = 1;
|
||
|
|
if (!setKeyPool.empty())
|
||
|
|
nEnd = *(--setKeyPool.end()) + 1;
|
||
|
|
if (!Write(make_pair(string("pool"), nEnd), CKeyPool(GenerateNewKey())))
|
||
|
|
throw runtime_error("ReserveKeyFromKeyPool() : writing generated key failed");
|
||
|
|
setKeyPool.insert(nEnd);
|
||
|
|
printf("keypool added key %"PRI64d", size=%d\n", nEnd, setKeyPool.size());
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get the oldest key
|
||
|
|
assert(!setKeyPool.empty());
|
||
|
|
nIndex = *(setKeyPool.begin());
|
||
|
|
setKeyPool.erase(setKeyPool.begin());
|
||
|
|
if (!Read(make_pair(string("pool"), nIndex), keypool))
|
||
|
|
throw runtime_error("ReserveKeyFromKeyPool() : read failed");
|
||
|
|
if (!mapKeys.count(keypool.vchPubKey))
|
||
|
|
throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
|
||
|
|
assert(!keypool.vchPubKey.empty());
|
||
|
|
printf("keypool reserve %"PRI64d"\n", nIndex);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void CWalletDB::KeepKey(int64 nIndex)
|
||
|
|
{
|
||
|
|
// Remove from key pool
|
||
|
|
CRITICAL_BLOCK(cs_main)
|
||
|
|
CRITICAL_BLOCK(cs_mapWallet)
|
||
|
|
{
|
||
|
|
Erase(make_pair(string("pool"), nIndex));
|
||
|
|
}
|
||
|
|
printf("keypool keep %"PRI64d"\n", nIndex);
|
||
|
|
}
|
||
|
|
|
||
|
|
void CWalletDB::ReturnKey(int64 nIndex)
|
||
|
|
{
|
||
|
|
// Return to key pool
|
||
|
|
CRITICAL_BLOCK(cs_setKeyPool)
|
||
|
|
setKeyPool.insert(nIndex);
|
||
|
|
printf("keypool return %"PRI64d"\n", nIndex);
|
||
|
|
}
|
||
|
|
|
||
|
|
vector<unsigned char> GetKeyFromKeyPool()
|
||
|
|
{
|
||
|
|
CWalletDB walletdb;
|
||
|
|
int64 nIndex = 0;
|
||
|
|
CKeyPool keypool;
|
||
|
|
walletdb.ReserveKeyFromKeyPool(nIndex, keypool);
|
||
|
|
walletdb.KeepKey(nIndex);
|
||
|
|
return keypool.vchPubKey;
|
||
|
|
}
|
||
|
|
|
||
|
|
int64 GetOldestKeyPoolTime()
|
||
|
|
{
|
||
|
|
CWalletDB walletdb;
|
||
|
|
int64 nIndex = 0;
|
||
|
|
CKeyPool keypool;
|
||
|
|
walletdb.ReserveKeyFromKeyPool(nIndex, keypool);
|
||
|
|
walletdb.ReturnKey(nIndex);
|
||
|
|
return keypool.nTime;
|
||
|
|
}
|
||
|
|
|
||
|
|
std::vector<unsigned char> CReserveKey::GetReservedKey()
|
||
|
|
{
|
||
|
|
if (nIndex == -1)
|
||
|
|
{
|
||
|
|
CKeyPool keypool;
|
||
|
|
CWalletDB().ReserveKeyFromKeyPool(nIndex, keypool);
|
||
|
|
vchPubKey = keypool.vchPubKey;
|
||
|
|
}
|
||
|
|
assert(!vchPubKey.empty());
|
||
|
|
return vchPubKey;
|
||
|
|
}
|
||
|
|
|
||
|
|
void CReserveKey::KeepKey()
|
||
|
|
{
|
||
|
|
if (nIndex != -1)
|
||
|
|
CWalletDB().KeepKey(nIndex);
|
||
|
|
nIndex = -1;
|
||
|
|
vchPubKey.clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
void CReserveKey::ReturnKey()
|
||
|
|
{
|
||
|
|
if (nIndex != -1)
|
||
|
|
CWalletDB::ReturnKey(nIndex);
|
||
|
|
nIndex = -1;
|
||
|
|
vchPubKey.clear();
|
||
|
|
}
|