propset svn:eol-style native

git-svn-id: https://bitcoin.svn.sourceforge.net/svnroot/bitcoin/trunk@146 1a98c847-1fd6-4fd8-948a-caf3550aa51b

1 files changed, 3381 insertions, 3381 deletions

diff --git a/main.cpp b/main.cpp
index ebd4bbd15e..76d30373f5 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,3381 +1,3381 @@
-// Copyright (c) 2009-2010 Satoshi Nakamoto

-// Distributed under the MIT/X11 software license, see the accompanying

-// file license.txt or http://www.opensource.org/licenses/mit-license.php.

-

-#include "headers.h"

-#include "cryptopp/sha.h"

-

-

-

-

-

-//

-// Global state

-//

-

-CCriticalSection cs_main;

-

-map<uint256, CTransaction> mapTransactions;

-CCriticalSection cs_mapTransactions;

-unsigned int nTransactionsUpdated = 0;

-map<COutPoint, CInPoint> mapNextTx;

-

-map<uint256, CBlockIndex*> mapBlockIndex;

-const uint256 hashGenesisBlock("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f");

-CBlockIndex* pindexGenesisBlock = NULL;

-int nBestHeight = -1;

-CBigNum bnBestChainWork = 0;

-CBigNum bnBestInvalidWork = 0;

-uint256 hashBestChain = 0;

-CBlockIndex* pindexBest = NULL;

-int64 nTimeBestReceived = 0;

-

-map<uint256, CBlock*> mapOrphanBlocks;

-multimap<uint256, CBlock*> mapOrphanBlocksByPrev;

-

-map<uint256, CDataStream*> mapOrphanTransactions;

-multimap<uint256, CDataStream*> mapOrphanTransactionsByPrev;

-

-map<uint256, CWalletTx> mapWallet;

-vector<uint256> vWalletUpdated;

-CCriticalSection cs_mapWallet;

-

-map<vector<unsigned char>, CPrivKey> mapKeys;

-map<uint160, vector<unsigned char> > mapPubKeys;

-CCriticalSection cs_mapKeys;

-CKey keyUser;

-

-map<uint256, int> mapRequestCount;

-CCriticalSection cs_mapRequestCount;

-

-map<string, string> mapAddressBook;

-CCriticalSection cs_mapAddressBook;

-

-vector<unsigned char> vchDefaultKey;

-

-double dHashesPerSec;

-int64 nHPSTimerStart;

-

-// Settings

-int fGenerateBitcoins = false;

-int64 nTransactionFee = 0;

-CAddress addrIncoming;

-int fLimitProcessors = false;

-int nLimitProcessors = 1;

-int fMinimizeToTray = true;

-int fMinimizeOnClose = true;

-

-

-

-

-

-

-//////////////////////////////////////////////////////////////////////////////

-//

-// mapKeys

-//

-

-bool AddKey(const CKey& key)

-{

-    CRITICAL_BLOCK(cs_mapKeys)

-    {

-        mapKeys[key.GetPubKey()] = key.GetPrivKey();

-        mapPubKeys[Hash160(key.GetPubKey())] = key.GetPubKey();

-    }

-    return CWalletDB().WriteKey(key.GetPubKey(), key.GetPrivKey());

-}

-

-vector<unsigned char> GenerateNewKey()

-{

-    RandAddSeedPerfmon();

-    CKey key;

-    key.MakeNewKey();

-    if (!AddKey(key))

-        throw runtime_error("GenerateNewKey() : AddKey failed\n");

-    return key.GetPubKey();

-}

-

-

-

-

-//////////////////////////////////////////////////////////////////////////////

-//

-// mapWallet

-//

-

-bool AddToWallet(const CWalletTx& wtxIn)

-{

-    uint256 hash = wtxIn.GetHash();

-    CRITICAL_BLOCK(cs_mapWallet)

-    {

-        // Inserts only if not already there, returns tx inserted or tx found

-        pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));

-        CWalletTx& wtx = (*ret.first).second;

-        bool fInsertedNew = ret.second;

-        if (fInsertedNew)

-            wtx.nTimeReceived = GetAdjustedTime();

-

-        bool fUpdated = false;

-        if (!fInsertedNew)

-        {

-            // Merge

-            if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)

-            {

-                wtx.hashBlock = wtxIn.hashBlock;

-                fUpdated = true;

-            }

-            if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))

-            {

-                wtx.vMerkleBranch = wtxIn.vMerkleBranch;

-                wtx.nIndex = wtxIn.nIndex;

-                fUpdated = true;

-            }

-            if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)

-            {

-                wtx.fFromMe = wtxIn.fFromMe;

-                fUpdated = true;

-            }

-            if (wtxIn.fSpent && wtxIn.fSpent != wtx.fSpent)

-            {

-                wtx.fSpent = wtxIn.fSpent;

-                fUpdated = true;

-            }

-        }

-

-        //// debug print

-        printf("AddToWallet %s  %s%s\n", wtxIn.GetHash().ToString().substr(0,6).c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));

-

-        // Write to disk

-        if (fInsertedNew || fUpdated)

-            if (!wtx.WriteToDisk())

-                return false;

-

-        // If default receiving address gets used, replace it with a new one

-        CScript scriptDefaultKey;

-        scriptDefaultKey.SetBitcoinAddress(vchDefaultKey);

-        foreach(const CTxOut& txout, wtx.vout)

-        {

-            if (txout.scriptPubKey == scriptDefaultKey)

-            {

-                CWalletDB walletdb;

-                walletdb.WriteDefaultKey(GenerateNewKey());

-                walletdb.WriteName(PubKeyToAddress(vchDefaultKey), "");

-            }

-        }

-

-        // Notify UI

-        vWalletUpdated.push_back(hash);

-    }

-

-    // Refresh UI

-    MainFrameRepaint();

-    return true;

-}

-

-bool AddToWalletIfMine(const CTransaction& tx, const CBlock* pblock)

-{

-    if (tx.IsMine() || mapWallet.count(tx.GetHash()))

-    {

-        CWalletTx wtx(tx);

-        // Get merkle branch if transaction was found in a block

-        if (pblock)

-            wtx.SetMerkleBranch(pblock);

-        return AddToWallet(wtx);

-    }

-    return true;

-}

-

-bool EraseFromWallet(uint256 hash)

-{

-    CRITICAL_BLOCK(cs_mapWallet)

-    {

-        if (mapWallet.erase(hash))

-            CWalletDB().EraseTx(hash);

-    }

-    return true;

-}

-

-void WalletUpdateSpent(const COutPoint& prevout)

-{

-    // Anytime a signature is successfully verified, it's proof the outpoint is spent.

-    // Update the wallet spent flag if it doesn't know due to wallet.dat being

-    // restored from backup or the user making copies of wallet.dat.

-    CRITICAL_BLOCK(cs_mapWallet)

-    {

-        map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);

-        if (mi != mapWallet.end())

-        {

-            CWalletTx& wtx = (*mi).second;

-            if (!wtx.fSpent && wtx.vout[prevout.n].IsMine())

-            {

-                printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());

-                wtx.fSpent = true;

-                wtx.WriteToDisk();

-                vWalletUpdated.push_back(prevout.hash);

-            }

-        }

-    }

-}

-

-

-

-

-

-

-

-

-//////////////////////////////////////////////////////////////////////////////

-//

-// mapOrphanTransactions

-//

-

-void AddOrphanTx(const CDataStream& vMsg)

-{

-    CTransaction tx;

-    CDataStream(vMsg) >> tx;

-    uint256 hash = tx.GetHash();

-    if (mapOrphanTransactions.count(hash))

-        return;

-    CDataStream* pvMsg = mapOrphanTransactions[hash] = new CDataStream(vMsg);

-    foreach(const CTxIn& txin, tx.vin)

-        mapOrphanTransactionsByPrev.insert(make_pair(txin.prevout.hash, pvMsg));

-}

-

-void EraseOrphanTx(uint256 hash)

-{

-    if (!mapOrphanTransactions.count(hash))

-        return;

-    const CDataStream* pvMsg = mapOrphanTransactions[hash];

-    CTransaction tx;

-    CDataStream(*pvMsg) >> tx;

-    foreach(const CTxIn& txin, tx.vin)

-    {

-        for (multimap<uint256, CDataStream*>::iterator mi = mapOrphanTransactionsByPrev.lower_bound(txin.prevout.hash);

-             mi != mapOrphanTransactionsByPrev.upper_bound(txin.prevout.hash);)

-        {

-            if ((*mi).second == pvMsg)

-                mapOrphanTransactionsByPrev.erase(mi++);

-            else

-                mi++;

-        }

-    }

-    delete pvMsg;

-    mapOrphanTransactions.erase(hash);

-}

-

-

-

-

-

-

-

-

-//////////////////////////////////////////////////////////////////////////////

-//

-// CTransaction

-//

-

-bool CTxIn::IsMine() const

-{

-    CRITICAL_BLOCK(cs_mapWallet)

-    {

-        map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);

-        if (mi != mapWallet.end())

-        {

-            const CWalletTx& prev = (*mi).second;

-            if (prevout.n < prev.vout.size())

-                if (prev.vout[prevout.n].IsMine())

-                    return true;

-        }

-    }

-    return false;

-}

-

-int64 CTxIn::GetDebit() const

-{

-    CRITICAL_BLOCK(cs_mapWallet)

-    {

-        map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);

-        if (mi != mapWallet.end())

-        {

-            const CWalletTx& prev = (*mi).second;

-            if (prevout.n < prev.vout.size())

-                if (prev.vout[prevout.n].IsMine())

-                    return prev.vout[prevout.n].nValue;

-        }

-    }

-    return 0;

-}

-

-int64 CWalletTx::GetTxTime() const

-{

-    if (!fTimeReceivedIsTxTime && hashBlock != 0)

-    {

-        // If we did not receive the transaction directly, we rely on the block's

-        // time to figure out when it happened.  We use the median over a range

-        // of blocks to try to filter out inaccurate block times.

-        map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);

-        if (mi != mapBlockIndex.end())

-        {

-            CBlockIndex* pindex = (*mi).second;

-            if (pindex)

-                return pindex->GetMedianTime();

-        }

-    }

-    return nTimeReceived;

-}

-

-int CWalletTx::GetRequestCount() const

-{

-    // Returns -1 if it wasn't being tracked

-    int nRequests = -1;

-    CRITICAL_BLOCK(cs_mapRequestCount)

-    {

-        if (IsCoinBase())

-        {

-            // Generated block

-            if (hashBlock != 0)

-            {

-                map<uint256, int>::iterator mi = mapRequestCount.find(hashBlock);

-                if (mi != mapRequestCount.end())

-                    nRequests = (*mi).second;

-            }

-        }

-        else

-        {

-            // Did anyone request this transaction?

-            map<uint256, int>::iterator mi = mapRequestCount.find(GetHash());

-            if (mi != mapRequestCount.end())

-            {

-                nRequests = (*mi).second;

-

-                // How about the block it's in?

-                if (nRequests == 0 && hashBlock != 0)

-                {

-                    map<uint256, int>::iterator mi = mapRequestCount.find(hashBlock);

-                    if (mi != mapRequestCount.end())

-                        nRequests = (*mi).second;

-                    else

-                        nRequests = 1; // If it's in someone else's block it must have got out

-                }

-            }

-        }

-    }

-    return nRequests;

-}

-

-

-

-

-int CMerkleTx::SetMerkleBranch(const CBlock* pblock)

-{

-    if (fClient)

-    {

-        if (hashBlock == 0)

-            return 0;

-    }

-    else

-    {

-        CBlock blockTmp;

-        if (pblock == NULL)

-        {

-            // Load the block this tx is in

-            CTxIndex txindex;

-            if (!CTxDB("r").ReadTxIndex(GetHash(), txindex))

-                return 0;

-            if (!blockTmp.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos))

-                return 0;

-            pblock = &blockTmp;

-        }

-

-        // Update the tx's hashBlock

-        hashBlock = pblock->GetHash();

-

-        // Locate the transaction

-        for (nIndex = 0; nIndex < pblock->vtx.size(); nIndex++)

-            if (pblock->vtx[nIndex] == *(CTransaction*)this)

-                break;

-        if (nIndex == pblock->vtx.size())

-        {

-            vMerkleBranch.clear();

-            nIndex = -1;

-            printf("ERROR: SetMerkleBranch() : couldn't find tx in block\n");

-            return 0;

-        }

-

-        // Fill in merkle branch

-        vMerkleBranch = pblock->GetMerkleBranch(nIndex);

-    }

-

-    // Is the tx in a block that's in the main chain

-    map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);

-    if (mi == mapBlockIndex.end())

-        return 0;

-    CBlockIndex* pindex = (*mi).second;

-    if (!pindex || !pindex->IsInMainChain())

-        return 0;

-

-    return pindexBest->nHeight - pindex->nHeight + 1;

-}

-

-

-

-void CWalletTx::AddSupportingTransactions(CTxDB& txdb)

-{

-    vtxPrev.clear();

-

-    const int COPY_DEPTH = 3;

-    if (SetMerkleBranch() < COPY_DEPTH)

-    {

-        vector<uint256> vWorkQueue;

-        foreach(const CTxIn& txin, vin)

-            vWorkQueue.push_back(txin.prevout.hash);

-

-        // This critsect is OK because txdb is already open

-        CRITICAL_BLOCK(cs_mapWallet)

-        {

-            map<uint256, const CMerkleTx*> mapWalletPrev;

-            set<uint256> setAlreadyDone;

-            for (int i = 0; i < vWorkQueue.size(); i++)

-            {

-                uint256 hash = vWorkQueue[i];

-                if (setAlreadyDone.count(hash))

-                    continue;

-                setAlreadyDone.insert(hash);

-

-                CMerkleTx tx;

-                if (mapWallet.count(hash))

-                {

-                    tx = mapWallet[hash];

-                    foreach(const CMerkleTx& txWalletPrev, mapWallet[hash].vtxPrev)

-                        mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;

-                }

-                else if (mapWalletPrev.count(hash))

-                {

-                    tx = *mapWalletPrev[hash];

-                }

-                else if (!fClient && txdb.ReadDiskTx(hash, tx))

-                {

-                    ;

-                }

-                else

-                {

-                    printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");

-                    continue;

-                }

-

-                int nDepth = tx.SetMerkleBranch();

-                vtxPrev.push_back(tx);

-

-                if (nDepth < COPY_DEPTH)

-                    foreach(const CTxIn& txin, tx.vin)

-                        vWorkQueue.push_back(txin.prevout.hash);

-            }

-        }

-    }

-

-    reverse(vtxPrev.begin(), vtxPrev.end());

-}

-

-

-

-

-

-

-

-

-

-

-

-bool CTransaction::AcceptTransaction(CTxDB& txdb, bool fCheckInputs, bool* pfMissingInputs)

-{

-    if (pfMissingInputs)

-        *pfMissingInputs = false;

-

-    // Coinbase is only valid in a block, not as a loose transaction

-    if (IsCoinBase())

-        return error("AcceptTransaction() : coinbase as individual tx");

-

-    if (!CheckTransaction())

-        return error("AcceptTransaction() : CheckTransaction failed");

-

-    // To help v0.1.5 clients who would see it as a negative number

-    if ((int64)nLockTime > INT_MAX)

-        return error("AcceptTransaction() : not accepting nLockTime beyond 2038 yet");

-

-    // Do we already have it?

-    uint256 hash = GetHash();

-    CRITICAL_BLOCK(cs_mapTransactions)

-        if (mapTransactions.count(hash))

-            return false;

-    if (fCheckInputs)

-        if (txdb.ContainsTx(hash))

-            return false;

-

-    // Check for conflicts with in-memory transactions

-    CTransaction* ptxOld = NULL;

-    for (int i = 0; i < vin.size(); i++)

-    {

-        COutPoint outpoint = vin[i].prevout;

-        if (mapNextTx.count(outpoint))

-        {

-            // Disable replacement feature for now

-            return false;

-

-            // Allow replacing with a newer version of the same transaction

-            if (i != 0)

-                return false;

-            ptxOld = mapNextTx[outpoint].ptx;

-            if (!IsNewerThan(*ptxOld))

-                return false;

-            for (int i = 0; i < vin.size(); i++)

-            {

-                COutPoint outpoint = vin[i].prevout;

-                if (!mapNextTx.count(outpoint) || mapNextTx[outpoint].ptx != ptxOld)

-                    return false;

-            }

-            break;

-        }

-    }

-

-    // Check against previous transactions

-    map<uint256, CTxIndex> mapUnused;

-    int64 nFees = 0;

-    if (fCheckInputs && !ConnectInputs(txdb, mapUnused, CDiskTxPos(1,1,1), pindexBest, nFees, false, false))

-    {

-        if (pfMissingInputs)

-            *pfMissingInputs = true;

-        return error("AcceptTransaction() : ConnectInputs failed %s", hash.ToString().substr(0,6).c_str());

-    }

-

-    // Store transaction in memory

-    CRITICAL_BLOCK(cs_mapTransactions)

-    {

-        if (ptxOld)

-        {

-            printf("AcceptTransaction() : replacing tx %s with new version\n", ptxOld->GetHash().ToString().c_str());

-            ptxOld->RemoveFromMemoryPool();

-        }

-        AddToMemoryPool();

-    }

-

-    ///// are we sure this is ok when loading transactions or restoring block txes

-    // If updated, erase old tx from wallet

-    if (ptxOld)

-        EraseFromWallet(ptxOld->GetHash());

-

-    printf("AcceptTransaction(): accepted %s\n", hash.ToString().substr(0,6).c_str());

-    return true;

-}

-

-

-bool CTransaction::AddToMemoryPool()

-{

-    // Add to memory pool without checking anything.  Don't call this directly,

-    // call AcceptTransaction to properly check the transaction first.

-    CRITICAL_BLOCK(cs_mapTransactions)

-    {

-        uint256 hash = GetHash();

-        mapTransactions[hash] = *this;

-        for (int i = 0; i < vin.size(); i++)

-            mapNextTx[vin[i].prevout] = CInPoint(&mapTransactions[hash], i);

-        nTransactionsUpdated++;

-    }

-    return true;

-}

-

-

-bool CTransaction::RemoveFromMemoryPool()

-{

-    // Remove transaction from memory pool

-    CRITICAL_BLOCK(cs_mapTransactions)

-    {

-        foreach(const CTxIn& txin, vin)

-            mapNextTx.erase(txin.prevout);

-        mapTransactions.erase(GetHash());

-        nTransactionsUpdated++;

-    }

-    return true;

-}

-

-

-

-

-

-

-int CMerkleTx::GetDepthInMainChain(int& nHeightRet) const

-{

-    if (hashBlock == 0 || nIndex == -1)

-        return 0;

-

-    // Find the block it claims to be in

-    map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);

-    if (mi == mapBlockIndex.end())

-        return 0;

-    CBlockIndex* pindex = (*mi).second;

-    if (!pindex || !pindex->IsInMainChain())

-        return 0;

-

-    // Make sure the merkle branch connects to this block

-    if (!fMerkleVerified)

-    {

-        if (CBlock::CheckMerkleBranch(GetHash(), vMerkleBranch, nIndex) != pindex->hashMerkleRoot)

-            return 0;

-        fMerkleVerified = true;

-    }

-

-    nHeightRet = pindex->nHeight;

-    return pindexBest->nHeight - pindex->nHeight + 1;

-}

-

-

-int CMerkleTx::GetBlocksToMaturity() const

-{

-    if (!IsCoinBase())

-        return 0;

-    return max(0, (COINBASE_MATURITY+20) - GetDepthInMainChain());

-}

-

-

-bool CMerkleTx::AcceptTransaction(CTxDB& txdb, bool fCheckInputs)

-{

-    if (fClient)

-    {

-        if (!IsInMainChain() && !ClientConnectInputs())

-            return false;

-        return CTransaction::AcceptTransaction(txdb, false);

-    }

-    else

-    {

-        return CTransaction::AcceptTransaction(txdb, fCheckInputs);

-    }

-}

-

-

-

-bool CWalletTx::AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs)

-{

-    CRITICAL_BLOCK(cs_mapTransactions)

-    {

-        foreach(CMerkleTx& tx, vtxPrev)

-        {

-            if (!tx.IsCoinBase())

-            {

-                uint256 hash = tx.GetHash();

-                if (!mapTransactions.count(hash) && !txdb.ContainsTx(hash))

-                    tx.AcceptTransaction(txdb, fCheckInputs);

-            }

-        }

-        if (!IsCoinBase())

-            return AcceptTransaction(txdb, fCheckInputs);

-    }

-    return true;

-}

-

-void ReacceptWalletTransactions()

-{

-    CTxDB txdb("r");

-    CRITICAL_BLOCK(cs_mapWallet)

-    {

-        foreach(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)

-        {

-            CWalletTx& wtx = item.second;

-            if (wtx.fSpent && wtx.IsCoinBase())

-                continue;

-

-            CTxIndex txindex;

-            if (txdb.ReadTxIndex(wtx.GetHash(), txindex))

-            {

-                // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat

-                if (!wtx.fSpent)

-                {

-                    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 (!txindex.vSpent[i].IsNull() && wtx.vout[i].IsMine())

-                        {

-                            printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());

-                            wtx.fSpent = true;

-                            wtx.WriteToDisk();

-                            break;

-                        }

-                    }

-                }

-            }

-            else

-            {

-                // Reaccept any txes of ours that aren't already in a block

-                if (!wtx.IsCoinBase())

-                    wtx.AcceptWalletTransaction(txdb, false);

-            }

-        }

-    }

-}

-

-

-void CWalletTx::RelayWalletTransaction(CTxDB& txdb)

-{

-    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(0,6).c_str());

-            RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);

-        }

-    }

-}

-

-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;

-        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));

-        }

-        foreach(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)

-        {

-            CWalletTx& wtx = *item.second;

-            wtx.RelayWalletTransaction(txdb);

-        }

-    }

-}

-

-

-

-

-

-

-

-

-

-

-//////////////////////////////////////////////////////////////////////////////

-//

-// CBlock and CBlockIndex

-//

-

-bool CBlock::ReadFromDisk(const CBlockIndex* pindex, bool fReadTransactions)

-{

-    if (!ReadFromDisk(pindex->nFile, pindex->nBlockPos, fReadTransactions))

-        return false;

-    if (GetHash() != pindex->GetBlockHash())

-        return error("CBlock::ReadFromDisk() : GetHash() doesn't match index");

-    return true;

-}

-

-uint256 GetOrphanRoot(const CBlock* pblock)

-{

-    // Work back to the first block in the orphan chain

-    while (mapOrphanBlocks.count(pblock->hashPrevBlock))

-        pblock = mapOrphanBlocks[pblock->hashPrevBlock];

-    return pblock->GetHash();

-}

-

-int64 CBlock::GetBlockValue(int nHeight, int64 nFees) const

-{

-    int64 nSubsidy = 50 * COIN;

-

-    // Subsidy is cut in half every 4 years

-    nSubsidy >>= (nHeight / 210000);

-

-    return nSubsidy + nFees;

-}

-

-unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast)

-{

-    const int64 nTargetTimespan = 14 * 24 * 60 * 60; // two weeks

-    const int64 nTargetSpacing = 10 * 60;

-    const int64 nInterval = nTargetTimespan / nTargetSpacing;

-

-    // Genesis block

-    if (pindexLast == NULL)

-        return bnProofOfWorkLimit.GetCompact();

-

-    // Only change once per interval

-    if ((pindexLast->nHeight+1) % nInterval != 0)

-        return pindexLast->nBits;

-

-    // Go back by what we want to be 14 days worth of blocks

-    const CBlockIndex* pindexFirst = pindexLast;

-    for (int i = 0; pindexFirst && i < nInterval-1; i++)

-        pindexFirst = pindexFirst->pprev;

-    assert(pindexFirst);

-

-    // Limit adjustment step

-    int64 nActualTimespan = pindexLast->GetBlockTime() - pindexFirst->GetBlockTime();

-    printf("  nActualTimespan = %"PRI64d"  before bounds\n", nActualTimespan);

-    if (nActualTimespan < nTargetTimespan/4)

-        nActualTimespan = nTargetTimespan/4;

-    if (nActualTimespan > nTargetTimespan*4)

-        nActualTimespan = nTargetTimespan*4;

-

-    // Retarget

-    CBigNum bnNew;

-    bnNew.SetCompact(pindexLast->nBits);

-    bnNew *= nActualTimespan;

-    bnNew /= nTargetTimespan;

-

-    if (bnNew > bnProofOfWorkLimit)

-        bnNew = bnProofOfWorkLimit;

-

-    /// debug print

-    printf("GetNextWorkRequired RETARGET\n");

-    printf("nTargetTimespan = %"PRI64d"    nActualTimespan = %"PRI64d"\n", nTargetTimespan, nActualTimespan);

-    printf("Before: %08x  %s\n", pindexLast->nBits, CBigNum().SetCompact(pindexLast->nBits).getuint256().ToString().c_str());

-    printf("After:  %08x  %s\n", bnNew.GetCompact(), bnNew.getuint256().ToString().c_str());

-

-    return bnNew.GetCompact();

-}

-

-bool CheckProofOfWork(uint256 hash, unsigned int nBits)

-{

-    CBigNum bnTarget;

-    bnTarget.SetCompact(nBits);

-

-    // Check range

-    if (bnTarget <= 0 || bnTarget > bnProofOfWorkLimit)

-        return error("CheckProofOfWork() : nBits below minimum work");

-

-    // Check proof of work matches claimed amount

-    if (hash > bnTarget.getuint256())

-        return error("CheckProofOfWork() : hash doesn't match nBits");

-

-    return true;

-}

-

-bool IsInitialBlockDownload()

-{

-    if (pindexBest == NULL)

-        return true;

-    static int64 nLastUpdate;

-    static CBlockIndex* pindexLastBest;

-    if (pindexBest != pindexLastBest)

-    {

-        pindexLastBest = pindexBest;

-        nLastUpdate = GetTime();

-    }

-    return (GetTime() - nLastUpdate < 10 &&

-            pindexBest->GetBlockTime() < GetTime() - 24 * 60 * 60);

-}

-

-void InvalidChainFound(CBlockIndex* pindexNew)

-{

-    if (pindexNew->bnChainWork > bnBestInvalidWork)

-    {

-        bnBestInvalidWork = pindexNew->bnChainWork;

-        CTxDB().WriteBestInvalidWork(bnBestInvalidWork);

-        MainFrameRepaint();

-    }

-    printf("InvalidChainFound: invalid block=%s  height=%d  work=%s\n", pindexNew->GetBlockHash().ToString().substr(0,20).c_str(), pindexNew->nHeight, pindexNew->bnChainWork.ToString().c_str());

-    printf("InvalidChainFound:  current best=%s  height=%d  work=%s\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());

-    if (pindexBest && bnBestInvalidWork > bnBestChainWork + pindexBest->GetBlockWork() * 6)

-        printf("InvalidChainFound: WARNING: Displayed transactions may not be correct!  You may need to upgrade, or other nodes may need to upgrade.\n");

-}

-

-

-

-

-

-

-

-

-

-

-

-bool CTransaction::DisconnectInputs(CTxDB& txdb)

-{

-    // Relinquish previous transactions' spent pointers

-    if (!IsCoinBase())

-    {

-        foreach(const CTxIn& txin, vin)

-        {

-            COutPoint prevout = txin.prevout;

-

-            // Get prev txindex from disk

-            CTxIndex txindex;

-            if (!txdb.ReadTxIndex(prevout.hash, txindex))

-                return error("DisconnectInputs() : ReadTxIndex failed");

-

-            if (prevout.n >= txindex.vSpent.size())

-                return error("DisconnectInputs() : prevout.n out of range");

-

-            // Mark outpoint as not spent

-            txindex.vSpent[prevout.n].SetNull();

-

-            // Write back

-            txdb.UpdateTxIndex(prevout.hash, txindex);

-        }

-    }

-

-    // Remove transaction from index

-    if (!txdb.EraseTxIndex(*this))

-        return error("DisconnectInputs() : EraseTxPos failed");

-

-    return true;

-}

-

-

-bool CTransaction::ConnectInputs(CTxDB& txdb, map<uint256, CTxIndex>& mapTestPool, CDiskTxPos posThisTx,

-                                 CBlockIndex* pindexBlock, int64& nFees, bool fBlock, bool fMiner, int64 nMinFee)

-{

-    // Take over previous transactions' spent pointers

-    if (!IsCoinBase())

-    {

-        int64 nValueIn = 0;

-        for (int i = 0; i < vin.size(); i++)

-        {

-            COutPoint prevout = vin[i].prevout;

-

-            // Read txindex

-            CTxIndex txindex;

-            bool fFound = true;

-            if (fMiner && mapTestPool.count(prevout.hash))

-            {

-                // Get txindex from current proposed changes

-                txindex = mapTestPool[prevout.hash];

-            }

-            else

-            {

-                // Read txindex from txdb

-                fFound = txdb.ReadTxIndex(prevout.hash, txindex);

-            }

-            if (!fFound && (fBlock || fMiner))

-                return fMiner ? false : error("ConnectInputs() : %s prev tx %s index entry not found", GetHash().ToString().substr(0,6).c_str(),  prevout.hash.ToString().substr(0,6).c_str());

-

-            // Read txPrev

-            CTransaction txPrev;

-            if (!fFound || txindex.pos == CDiskTxPos(1,1,1))

-            {

-                // Get prev tx from single transactions in memory

-                CRITICAL_BLOCK(cs_mapTransactions)

-                {

-                    if (!mapTransactions.count(prevout.hash))

-                        return error("ConnectInputs() : %s mapTransactions prev not found %s", GetHash().ToString().substr(0,6).c_str(),  prevout.hash.ToString().substr(0,6).c_str());

-                    txPrev = mapTransactions[prevout.hash];

-                }

-                if (!fFound)

-                    txindex.vSpent.resize(txPrev.vout.size());

-            }

-            else

-            {

-                // Get prev tx from disk

-                if (!txPrev.ReadFromDisk(txindex.pos))

-                    return error("ConnectInputs() : %s ReadFromDisk prev tx %s failed", GetHash().ToString().substr(0,6).c_str(),  prevout.hash.ToString().substr(0,6).c_str());

-            }

-

-            if (prevout.n >= txPrev.vout.size() || prevout.n >= txindex.vSpent.size())

-                return error("ConnectInputs() : %s prevout.n out of range %d %d %d prev tx %s\n%s", GetHash().ToString().substr(0,6).c_str(), prevout.n, txPrev.vout.size(), txindex.vSpent.size(), prevout.hash.ToString().substr(0,6).c_str(), txPrev.ToString().c_str());

-

-            // If prev is coinbase, check that it's matured

-            if (txPrev.IsCoinBase())

-                for (CBlockIndex* pindex = pindexBlock; pindex && pindexBlock->nHeight - pindex->nHeight < COINBASE_MATURITY; pindex = pindex->pprev)

-                    if (pindex->nBlockPos == txindex.pos.nBlockPos && pindex->nFile == txindex.pos.nFile)

-                        return error("ConnectInputs() : tried to spend coinbase at depth %d", pindexBlock->nHeight - pindex->nHeight);

-

-            // Verify signature

-            if (!VerifySignature(txPrev, *this, i))

-                return error("ConnectInputs() : %s VerifySignature failed", GetHash().ToString().substr(0,6).c_str());

-

-            // Check for conflicts

-            if (!txindex.vSpent[prevout.n].IsNull())

-                return fMiner ? false : error("ConnectInputs() : %s prev tx already used at %s", GetHash().ToString().substr(0,6).c_str(), txindex.vSpent[prevout.n].ToString().c_str());

-

-            // Mark outpoints as spent

-            txindex.vSpent[prevout.n] = posThisTx;

-

-            // Write back

-            if (fBlock)

-                txdb.UpdateTxIndex(prevout.hash, txindex);

-            else if (fMiner)

-                mapTestPool[prevout.hash] = txindex;

-

-            nValueIn += txPrev.vout[prevout.n].nValue;

-

-            // Check for negative or overflow input values

-            if (!MoneyRange(txPrev.vout[prevout.n].nValue) || !MoneyRange(nValueIn))

-                return error("ConnectInputs() : txin values out of range");

-        }

-

-        if (nValueIn < GetValueOut())

-            return error("ConnectInputs() : %s value in < value out", GetHash().ToString().substr(0,6).c_str());

-

-        // Tally transaction fees

-        int64 nTxFee = nValueIn - GetValueOut();

-        if (nTxFee < 0)

-            return error("ConnectInputs() : %s nTxFee < 0", GetHash().ToString().substr(0,6).c_str());

-        if (nTxFee < nMinFee)

-            return false;

-        nFees += nTxFee;

-    }

-

-    if (fBlock)

-    {

-        // Add transaction to disk index

-        if (!txdb.AddTxIndex(*this, posThisTx, pindexBlock->nHeight))

-            return error("ConnectInputs() : AddTxPos failed");

-    }

-    else if (fMiner)

-    {

-        // Add transaction to test pool

-        mapTestPool[GetHash()] = CTxIndex(CDiskTxPos(1,1,1), vout.size());

-    }

-

-    return true;

-}

-

-

-bool CTransaction::ClientConnectInputs()

-{

-    if (IsCoinBase())

-        return false;

-

-    // Take over previous transactions' spent pointers

-    CRITICAL_BLOCK(cs_mapTransactions)

-    {

-        int64 nValueIn = 0;

-        for (int i = 0; i < vin.size(); i++)

-        {

-            // Get prev tx from single transactions in memory

-            COutPoint prevout = vin[i].prevout;

-            if (!mapTransactions.count(prevout.hash))

-                return false;

-            CTransaction& txPrev = mapTransactions[prevout.hash];

-

-            if (prevout.n >= txPrev.vout.size())

-                return false;

-

-            // Verify signature

-            if (!VerifySignature(txPrev, *this, i))

-                return error("ConnectInputs() : VerifySignature failed");

-

-            ///// this is redundant with the mapNextTx stuff, not sure which I want to get rid of

-            ///// this has to go away now that posNext is gone

-            // // Check for conflicts

-            // if (!txPrev.vout[prevout.n].posNext.IsNull())

-            //     return error("ConnectInputs() : prev tx already used");

-            //

-            // // Flag outpoints as used

-            // txPrev.vout[prevout.n].posNext = posThisTx;

-

-            nValueIn += txPrev.vout[prevout.n].nValue;

-        }

-        if (GetValueOut() > nValueIn)

-            return false;

-    }

-

-    return true;

-}

-

-

-

-

-bool CBlock::DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex)

-{

-    // Disconnect in reverse order

-    for (int i = vtx.size()-1; i >= 0; i--)

-        if (!vtx[i].DisconnectInputs(txdb))

-            return false;

-

-    // Update block index on disk without changing it in memory.

-    // The memory index structure will be changed after the db commits.

-    if (pindex->pprev)

-    {

-        CDiskBlockIndex blockindexPrev(pindex->pprev);

-        blockindexPrev.hashNext = 0;

-        txdb.WriteBlockIndex(blockindexPrev);

-    }

-

-    return true;

-}

-

-bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex)

-{

-    // Check it again in case a previous version let a bad block in

-    if (!CheckBlock())

-        return false;

-

-    //// issue here: it doesn't know the version

-    unsigned int nTxPos = pindex->nBlockPos + ::GetSerializeSize(CBlock(), SER_DISK) - 1 + GetSizeOfCompactSize(vtx.size());

-

-    map<uint256, CTxIndex> mapUnused;

-    int64 nFees = 0;

-    foreach(CTransaction& tx, vtx)

-    {

-        CDiskTxPos posThisTx(pindex->nFile, pindex->nBlockPos, nTxPos);

-        nTxPos += ::GetSerializeSize(tx, SER_DISK);

-

-        if (!tx.ConnectInputs(txdb, mapUnused, posThisTx, pindex, nFees, true, false))

-            return false;

-    }

-

-    if (vtx[0].GetValueOut() > GetBlockValue(pindex->nHeight, nFees))

-        return false;

-

-    // Update block index on disk without changing it in memory.

-    // The memory index structure will be changed after the db commits.

-    if (pindex->pprev)

-    {

-        CDiskBlockIndex blockindexPrev(pindex->pprev);

-        blockindexPrev.hashNext = pindex->GetBlockHash();

-        txdb.WriteBlockIndex(blockindexPrev);

-    }

-

-    // Watch for transactions paying to me

-    foreach(CTransaction& tx, vtx)

-        AddToWalletIfMine(tx, this);

-

-    return true;

-}

-

-

-

-bool Reorganize(CTxDB& txdb, CBlockIndex* pindexNew)

-{

-    printf("REORGANIZE\n");

-

-    // Find the fork

-    CBlockIndex* pfork = pindexBest;

-    CBlockIndex* plonger = pindexNew;

-    while (pfork != plonger)

-    {

-        while (plonger->nHeight > pfork->nHeight)

-            if (!(plonger = plonger->pprev))

-                return error("Reorganize() : plonger->pprev is null");

-        if (pfork == plonger)

-            break;

-        if (!(pfork = pfork->pprev))

-            return error("Reorganize() : pfork->pprev is null");

-    }

-

-    // List of what to disconnect

-    vector<CBlockIndex*> vDisconnect;

-    for (CBlockIndex* pindex = pindexBest; pindex != pfork; pindex = pindex->pprev)

-        vDisconnect.push_back(pindex);

-

-    // List of what to connect

-    vector<CBlockIndex*> vConnect;

-    for (CBlockIndex* pindex = pindexNew; pindex != pfork; pindex = pindex->pprev)

-        vConnect.push_back(pindex);

-    reverse(vConnect.begin(), vConnect.end());

-

-    // Disconnect shorter branch

-    vector<CTransaction> vResurrect;

-    foreach(CBlockIndex* pindex, vDisconnect)

-    {

-        CBlock block;

-        if (!block.ReadFromDisk(pindex))

-            return error("Reorganize() : ReadFromDisk for disconnect failed");

-        if (!block.DisconnectBlock(txdb, pindex))

-            return error("Reorganize() : DisconnectBlock failed");

-

-        // Queue memory transactions to resurrect

-        foreach(const CTransaction& tx, block.vtx)

-            if (!tx.IsCoinBase())

-                vResurrect.push_back(tx);

-    }

-

-    // Connect longer branch

-    vector<CTransaction> vDelete;

-    for (int i = 0; i < vConnect.size(); i++)

-    {

-        CBlockIndex* pindex = vConnect[i];

-        CBlock block;

-        if (!block.ReadFromDisk(pindex))

-            return error("Reorganize() : ReadFromDisk for connect failed");

-        if (!block.ConnectBlock(txdb, pindex))

-        {

-            // Invalid block

-            txdb.TxnAbort();

-            return error("Reorganize() : ConnectBlock failed");

-        }

-

-        // Queue memory transactions to delete

-        foreach(const CTransaction& tx, block.vtx)

-            vDelete.push_back(tx);

-    }

-    if (!txdb.WriteHashBestChain(pindexNew->GetBlockHash()))

-        return error("Reorganize() : WriteHashBestChain failed");

-

-    // Commit now because resurrecting could take some time

-    txdb.TxnCommit();

-

-    // Disconnect shorter branch

-    foreach(CBlockIndex* pindex, vDisconnect)

-        if (pindex->pprev)

-            pindex->pprev->pnext = NULL;

-

-    // Connect longer branch

-    foreach(CBlockIndex* pindex, vConnect)

-        if (pindex->pprev)

-            pindex->pprev->pnext = pindex;

-

-    // Resurrect memory transactions that were in the disconnected branch

-    foreach(CTransaction& tx, vResurrect)

-        tx.AcceptTransaction(txdb, false);

-

-    // Delete redundant memory transactions that are in the connected branch

-    foreach(CTransaction& tx, vDelete)

-        tx.RemoveFromMemoryPool();

-

-    return true;

-}

-

-

-bool CBlock::SetBestChain(CTxDB& txdb, CBlockIndex* pindexNew)

-{

-    uint256 hash = GetHash();

-

-    txdb.TxnBegin();

-    if (pindexGenesisBlock == NULL && hash == hashGenesisBlock)

-    {

-        pindexGenesisBlock = pindexNew;

-        txdb.WriteHashBestChain(hash);

-    }

-    else if (hashPrevBlock == hashBestChain)

-    {

-        // Adding to current best branch

-        if (!ConnectBlock(txdb, pindexNew) || !txdb.WriteHashBestChain(hash))

-        {

-            txdb.TxnAbort();

-            InvalidChainFound(pindexNew);

-            return error("SetBestChain() : ConnectBlock failed");

-        }

-        txdb.TxnCommit();

-        pindexNew->pprev->pnext = pindexNew;

-

-        // Delete redundant memory transactions

-        foreach(CTransaction& tx, vtx)

-            tx.RemoveFromMemoryPool();

-    }

-    else

-    {

-        // New best branch

-        if (!Reorganize(txdb, pindexNew))

-        {

-            txdb.TxnAbort();

-            InvalidChainFound(pindexNew);

-            return error("SetBestChain() : Reorganize failed");

-        }

-    }

-    txdb.TxnCommit();

-

-    // New best block

-    hashBestChain = hash;

-    pindexBest = pindexNew;

-    nBestHeight = pindexBest->nHeight;

-    bnBestChainWork = pindexNew->bnChainWork;

-    nTimeBestReceived = GetTime();

-    nTransactionsUpdated++;

-    printf("SetBestChain: new best=%s  height=%d  work=%s\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());

-

-    return true;

-}

-

-

-bool CBlock::AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos)

-{

-    // Check for duplicate

-    uint256 hash = GetHash();

-    if (mapBlockIndex.count(hash))

-        return error("AddToBlockIndex() : %s already exists", hash.ToString().substr(0,20).c_str());

-

-    // Construct new block index object

-    CBlockIndex* pindexNew = new CBlockIndex(nFile, nBlockPos, *this);

-    if (!pindexNew)

-        return error("AddToBlockIndex() : new CBlockIndex failed");

-    map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;

-    pindexNew->phashBlock = &((*mi).first);

-    map<uint256, CBlockIndex*>::iterator miPrev = mapBlockIndex.find(hashPrevBlock);

-    if (miPrev != mapBlockIndex.end())

-    {

-        pindexNew->pprev = (*miPrev).second;

-        pindexNew->nHeight = pindexNew->pprev->nHeight + 1;

-    }

-    pindexNew->bnChainWork = (pindexNew->pprev ? pindexNew->pprev->bnChainWork : 0) + pindexNew->GetBlockWork();

-

-    CTxDB txdb;

-    txdb.WriteBlockIndex(CDiskBlockIndex(pindexNew));

-

-    // New best

-    if (pindexNew->bnChainWork > bnBestChainWork)

-        if (!SetBestChain(txdb, pindexNew))

-            return false;

-

-    txdb.Close();

-

-    if (pindexNew == pindexBest)

-    {

-        // Notify UI to display prev block's coinbase if it was ours

-        static uint256 hashPrevBestCoinBase;

-        CRITICAL_BLOCK(cs_mapWallet)

-            vWalletUpdated.push_back(hashPrevBestCoinBase);

-        hashPrevBestCoinBase = vtx[0].GetHash();

-    }

-

-    MainFrameRepaint();

-    return true;

-}

-

-

-

-

-bool CBlock::CheckBlock() const

-{

-    // These are checks that are independent of context

-    // that can be verified before saving an orphan block.

-

-    // Size limits

-    if (vtx.empty() || vtx.size() > MAX_SIZE || ::GetSerializeSize(*this, SER_DISK) > MAX_SIZE)

-        return error("CheckBlock() : size limits failed");

-

-    // Check timestamp

-    if (GetBlockTime() > GetAdjustedTime() + 2 * 60 * 60)

-        return error("CheckBlock() : block timestamp too far in the future");

-

-    // First transaction must be coinbase, the rest must not be

-    if (vtx.empty() || !vtx[0].IsCoinBase())

-        return error("CheckBlock() : first tx is not coinbase");

-    for (int i = 1; i < vtx.size(); i++)

-        if (vtx[i].IsCoinBase())

-            return error("CheckBlock() : more than one coinbase");

-

-    // Check transactions

-    foreach(const CTransaction& tx, vtx)

-        if (!tx.CheckTransaction())

-            return error("CheckBlock() : CheckTransaction failed");

-

-    // Check proof of work matches claimed amount

-    if (!CheckProofOfWork(GetHash(), nBits))

-        return error("CheckBlock() : proof of work failed");

-

-    // Check merkleroot

-    if (hashMerkleRoot != BuildMerkleTree())

-        return error("CheckBlock() : hashMerkleRoot mismatch");

-

-    return true;

-}

-

-bool CBlock::AcceptBlock()

-{

-    // Check for duplicate

-    uint256 hash = GetHash();

-    if (mapBlockIndex.count(hash))

-        return error("AcceptBlock() : block already in mapBlockIndex");

-

-    // Get prev block index

-    map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashPrevBlock);

-    if (mi == mapBlockIndex.end())

-        return error("AcceptBlock() : prev block not found");

-    CBlockIndex* pindexPrev = (*mi).second;

-

-    // Check timestamp against prev

-    if (GetBlockTime() <= pindexPrev->GetMedianTimePast())

-        return error("AcceptBlock() : block's timestamp is too early");

-

-    // Check that all transactions are finalized

-    foreach(const CTransaction& tx, vtx)

-        if (!tx.IsFinal(pindexPrev->nHeight+1, GetBlockTime()))

-            return error("AcceptBlock() : contains a non-final transaction");

-

-    // Check proof of work

-    if (nBits != GetNextWorkRequired(pindexPrev))

-        return error("AcceptBlock() : incorrect proof of work");

-

-    // Check that the block chain matches the known block chain up to a checkpoint

-    if ((pindexPrev->nHeight+1 == 11111 && hash != uint256("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")) ||

-        (pindexPrev->nHeight+1 == 33333 && hash != uint256("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")) ||

-        (pindexPrev->nHeight+1 == 68555 && hash != uint256("0x00000000001e1b4903550a0b96e9a9405c8a95f387162e4944e8d9fbe501cd6a")) ||

-        (pindexPrev->nHeight+1 == 70567 && hash != uint256("0x00000000006a49b14bcf27462068f1264c961f11fa2e0eddd2be0791e1d4124a")) ||

-        (pindexPrev->nHeight+1 == 74000 && hash != uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")))

-        return error("AcceptBlock() : rejected by checkpoint lockin at %d", pindexPrev->nHeight+1);

-

-    // Scanback checkpoint lockin

-    for (CBlockIndex* pindex = pindexPrev; pindex->nHeight >= 74000; pindex = pindex->pprev)

-    {

-        if (pindex->nHeight == 74000 && pindex->GetBlockHash() != uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"))

-            return error("AcceptBlock() : rejected by scanback lockin at %d", pindex->nHeight);

-        if (pindex->nHeight == 74638 && pindex->GetBlockHash() == uint256("0x0000000000790ab3f22ec756ad43b6ab569abf0bddeb97c67a6f7b1470a7ec1c"))

-            return error("AcceptBlock() : rejected by scanback lockin at %d", pindex->nHeight);

-    }

-

-    // Write block to history file

-    if (!CheckDiskSpace(::GetSerializeSize(*this, SER_DISK)))

-        return error("AcceptBlock() : out of disk space");

-    unsigned int nFile;

-    unsigned int nBlockPos;

-    if (!WriteToDisk(!fClient, nFile, nBlockPos))

-        return error("AcceptBlock() : WriteToDisk failed");

-    if (!AddToBlockIndex(nFile, nBlockPos))

-        return error("AcceptBlock() : AddToBlockIndex failed");

-

-    // Relay inventory, but don't relay old inventory during initial block download

-    if (hashBestChain == hash)

-        CRITICAL_BLOCK(cs_vNodes)

-            foreach(CNode* pnode, vNodes)

-                if (nBestHeight > (pnode->nStartingHeight != -1 ? pnode->nStartingHeight - 2000 : 55000))

-                    pnode->PushInventory(CInv(MSG_BLOCK, hash));

-

-    return true;

-}

-

-bool ProcessBlock(CNode* pfrom, CBlock* pblock)

-{

-    // Check for duplicate

-    uint256 hash = pblock->GetHash();

-    if (mapBlockIndex.count(hash))

-        return error("ProcessBlock() : already have block %d %s", mapBlockIndex[hash]->nHeight, hash.ToString().substr(0,20).c_str());

-    if (mapOrphanBlocks.count(hash))

-        return error("ProcessBlock() : already have block (orphan) %s", hash.ToString().substr(0,20).c_str());

-

-    // Preliminary checks

-    if (!pblock->CheckBlock())

-    {

-        delete pblock;

-        return error("ProcessBlock() : CheckBlock FAILED");

-    }

-

-    // If don't already have its previous block, shunt it off to holding area until we get it

-    if (!mapBlockIndex.count(pblock->hashPrevBlock))

-    {

-        printf("ProcessBlock: ORPHAN BLOCK, prev=%s\n", pblock->hashPrevBlock.ToString().substr(0,20).c_str());

-        mapOrphanBlocks.insert(make_pair(hash, pblock));

-        mapOrphanBlocksByPrev.insert(make_pair(pblock->hashPrevBlock, pblock));

-

-        // Ask this guy to fill in what we're missing

-        if (pfrom)

-            pfrom->PushGetBlocks(pindexBest, GetOrphanRoot(pblock));

-        return true;

-    }

-

-    // Store to disk

-    if (!pblock->AcceptBlock())

-    {

-        delete pblock;

-        return error("ProcessBlock() : AcceptBlock FAILED");

-    }

-    delete pblock;

-

-    // Recursively process any orphan blocks that depended on this one

-    vector<uint256> vWorkQueue;

-    vWorkQueue.push_back(hash);

-    for (int i = 0; i < vWorkQueue.size(); i++)

-    {

-        uint256 hashPrev = vWorkQueue[i];

-        for (multimap<uint256, CBlock*>::iterator mi = mapOrphanBlocksByPrev.lower_bound(hashPrev);

-             mi != mapOrphanBlocksByPrev.upper_bound(hashPrev);

-             ++mi)

-        {

-            CBlock* pblockOrphan = (*mi).second;

-            if (pblockOrphan->AcceptBlock())

-                vWorkQueue.push_back(pblockOrphan->GetHash());

-            mapOrphanBlocks.erase(pblockOrphan->GetHash());

-            delete pblockOrphan;

-        }

-        mapOrphanBlocksByPrev.erase(hashPrev);

-    }

-

-    printf("ProcessBlock: ACCEPTED\n");

-    return true;

-}

-

-

-

-

-

-

-

-

-template<typename Stream>

-bool ScanMessageStart(Stream& s)

-{

-    // Scan ahead to the next pchMessageStart, which should normally be immediately

-    // at the file pointer.  Leaves file pointer at end of pchMessageStart.

-    s.clear(0);

-    short prevmask = s.exceptions(0);

-    const char* p = BEGIN(pchMessageStart);

-    try

-    {

-        loop

-        {

-            char c;

-            s.read(&c, 1);

-            if (s.fail())

-            {

-                s.clear(0);

-                s.exceptions(prevmask);

-                return false;

-            }

-            if (*p != c)

-                p = BEGIN(pchMessageStart);

-            if (*p == c)

-            {

-                if (++p == END(pchMessageStart))

-                {

-                    s.clear(0);

-                    s.exceptions(prevmask);

-                    return true;

-                }

-            }

-        }

-    }

-    catch (...)

-    {

-        s.clear(0);

-        s.exceptions(prevmask);

-        return false;

-    }

-}

-

-bool CheckDiskSpace(uint64 nAdditionalBytes)

-{

-    uint64 nFreeBytesAvailable = filesystem::space(GetDataDir()).available;

-

-    // Check for 15MB because database could create another 10MB log file at any time

-    if (nFreeBytesAvailable < (uint64)15000000 + nAdditionalBytes)

-    {

-        fShutdown = true;

-        string strMessage = _("Warning: Disk space is low  ");

-        strMiscWarning = strMessage;

-        printf("*** %s\n", strMessage.c_str());

-        ThreadSafeMessageBox(strMessage, "Bitcoin", wxOK | wxICON_EXCLAMATION);

-        CreateThread(Shutdown, NULL);

-        return false;

-    }

-    return true;

-}

-

-FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode)

-{

-    if (nFile == -1)

-        return NULL;

-    FILE* file = fopen(strprintf("%s/blk%04d.dat", GetDataDir().c_str(), nFile).c_str(), pszMode);

-    if (!file)

-        return NULL;

-    if (nBlockPos != 0 && !strchr(pszMode, 'a') && !strchr(pszMode, 'w'))

-    {

-        if (fseek(file, nBlockPos, SEEK_SET) != 0)

-        {

-            fclose(file);

-            return NULL;

-        }

-    }

-    return file;

-}

-

-static unsigned int nCurrentBlockFile = 1;

-

-FILE* AppendBlockFile(unsigned int& nFileRet)

-{

-    nFileRet = 0;

-    loop

-    {

-        FILE* file = OpenBlockFile(nCurrentBlockFile, 0, "ab");

-        if (!file)

-            return NULL;

-        if (fseek(file, 0, SEEK_END) != 0)

-            return NULL;

-        // FAT32 filesize max 4GB, fseek and ftell max 2GB, so we must stay under 2GB

-        if (ftell(file) < 0x7F000000 - MAX_SIZE)

-        {

-            nFileRet = nCurrentBlockFile;

-            return file;

-        }

-        fclose(file);

-        nCurrentBlockFile++;

-    }

-}

-

-bool LoadBlockIndex(bool fAllowNew)

-{

-    //

-    // Load block index

-    //

-    CTxDB txdb("cr");

-    if (!txdb.LoadBlockIndex())

-        return false;

-    txdb.Close();

-

-    //

-    // Init with genesis block

-    //

-    if (mapBlockIndex.empty())

-    {

-        if (!fAllowNew)

-            return false;

-

-        // Genesis Block:

-        // CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)

-        //   CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)

-        //     CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)

-        //     CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)

-        //   vMerkleTree: 4a5e1e

-

-        // Genesis block

-        const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";

-        CTransaction txNew;

-        txNew.vin.resize(1);

-        txNew.vout.resize(1);

-        txNew.vin[0].scriptSig = CScript() << 486604799 << CBigNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));

-        txNew.vout[0].nValue = 50 * COIN;

-        txNew.vout[0].scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;

-        CBlock block;

-        block.vtx.push_back(txNew);

-        block.hashPrevBlock = 0;

-        block.hashMerkleRoot = block.BuildMerkleTree();

-        block.nVersion = 1;

-        block.nTime    = 1231006505;

-        block.nBits    = 0x1d00ffff;

-        block.nNonce   = 2083236893;

-

-            //// debug print

-            printf("%s\n", block.GetHash().ToString().c_str());

-            printf("%s\n", hashGenesisBlock.ToString().c_str());

-            printf("%s\n", block.hashMerkleRoot.ToString().c_str());

-            assert(block.hashMerkleRoot == uint256("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));

-            block.print();

-

-        assert(block.GetHash() == hashGenesisBlock);

-

-        // Start new block file

-        unsigned int nFile;

-        unsigned int nBlockPos;

-        if (!block.WriteToDisk(!fClient, nFile, nBlockPos))

-            return error("LoadBlockIndex() : writing genesis block to disk failed");

-        if (!block.AddToBlockIndex(nFile, nBlockPos))

-            return error("LoadBlockIndex() : genesis block not accepted");

-    }

-

-    return true;

-}

-

-

-

-void PrintBlockTree()

-{

-    // precompute tree structure

-    map<CBlockIndex*, vector<CBlockIndex*> > mapNext;

-    for (map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.begin(); mi != mapBlockIndex.end(); ++mi)

-    {

-        CBlockIndex* pindex = (*mi).second;

-        mapNext[pindex->pprev].push_back(pindex);

-        // test

-        //while (rand() % 3 == 0)

-        //    mapNext[pindex->pprev].push_back(pindex);

-    }

-

-    vector<pair<int, CBlockIndex*> > vStack;

-    vStack.push_back(make_pair(0, pindexGenesisBlock));

-

-    int nPrevCol = 0;

-    while (!vStack.empty())

-    {

-        int nCol = vStack.back().first;

-        CBlockIndex* pindex = vStack.back().second;

-        vStack.pop_back();

-

-        // print split or gap

-        if (nCol > nPrevCol)

-        {

-            for (int i = 0; i < nCol-1; i++)

-                printf("| ");

-            printf("|\\\n");

-        }

-        else if (nCol < nPrevCol)

-        {

-            for (int i = 0; i < nCol; i++)

-                printf("| ");

-            printf("|\n");

-        }

-        nPrevCol = nCol;

-

-        // print columns

-        for (int i = 0; i < nCol; i++)

-            printf("| ");

-

-        // print item

-        CBlock block;

-        block.ReadFromDisk(pindex);

-        printf("%d (%u,%u) %s  %s  tx %d",

-            pindex->nHeight,

-            pindex->nFile,

-            pindex->nBlockPos,

-            block.GetHash().ToString().substr(0,20).c_str(),

-            DateTimeStrFormat("%x %H:%M:%S", block.GetBlockTime()).c_str(),

-            block.vtx.size());

-

-        CRITICAL_BLOCK(cs_mapWallet)

-        {

-            if (mapWallet.count(block.vtx[0].GetHash()))

-            {

-                CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];

-                printf("    mine:  %d  %d  %d", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit());

-            }

-        }

-        printf("\n");

-

-

-        // put the main timechain first

-        vector<CBlockIndex*>& vNext = mapNext[pindex];

-        for (int i = 0; i < vNext.size(); i++)

-        {

-            if (vNext[i]->pnext)

-            {

-                swap(vNext[0], vNext[i]);

-                break;

-            }

-        }

-

-        // iterate children

-        for (int i = 0; i < vNext.size(); i++)

-            vStack.push_back(make_pair(nCol+i, vNext[i]));

-    }

-}

-

-

-

-

-

-

-

-

-

-

-//////////////////////////////////////////////////////////////////////////////

-//

-// CAlert

-//

-

-map<uint256, CAlert> mapAlerts;

-CCriticalSection cs_mapAlerts;

-

-string GetWarnings(string strFor)

-{

-    int nPriority = 0;

-    string strStatusBar;

-    string strRPC;

-    if (mapArgs.count("-testsafemode"))

-        strRPC = "test";

-

-    // Misc warnings like out of disk space and clock is wrong

-    if (strMiscWarning != "")

-    {

-        nPriority = 1000;

-        strStatusBar = strMiscWarning;

-    }

-

-    // Longer invalid proof-of-work chain

-    if (pindexBest && bnBestInvalidWork > bnBestChainWork + pindexBest->GetBlockWork() * 6)

-    {

-        nPriority = 2000;

-        strStatusBar = strRPC = "WARNING: Displayed transactions may not be correct!  You may need to upgrade, or other nodes may need to upgrade.";

-    }

-

-    // Alerts

-    CRITICAL_BLOCK(cs_mapAlerts)

-    {

-        foreach(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)

-        {

-            const CAlert& alert = item.second;

-            if (alert.AppliesToMe() && alert.nPriority > nPriority)

-            {

-                nPriority = alert.nPriority;

-                strStatusBar = alert.strStatusBar;

-                strRPC = alert.strRPCError;

-            }

-        }

-    }

-

-    if (strFor == "statusbar")

-        return strStatusBar;

-    else if (strFor == "rpc")

-        return strRPC;

-    assert(("GetWarnings() : invalid parameter", false));

-    return "error";

-}

-

-bool CAlert::ProcessAlert()

-{

-    if (!CheckSignature())

-        return false;

-    if (!IsInEffect())

-        return false;

-

-    CRITICAL_BLOCK(cs_mapAlerts)

-    {

-        // Cancel previous alerts

-        for (map<uint256, CAlert>::iterator mi = mapAlerts.begin(); mi != mapAlerts.end();)

-        {

-            const CAlert& alert = (*mi).second;

-            if (Cancels(alert))

-            {

-                printf("cancelling alert %d\n", alert.nID);

-                mapAlerts.erase(mi++);

-            }

-            else if (!alert.IsInEffect())

-            {

-                printf("expiring alert %d\n", alert.nID);

-                mapAlerts.erase(mi++);

-            }

-            else

-                mi++;

-        }

-

-        // Check if this alert has been cancelled

-        foreach(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)

-        {

-            const CAlert& alert = item.second;

-            if (alert.Cancels(*this))

-            {

-                printf("alert already cancelled by %d\n", alert.nID);

-                return false;

-            }

-        }

-

-        // Add to mapAlerts

-        mapAlerts.insert(make_pair(GetHash(), *this));

-    }

-

-    printf("accepted alert %d, AppliesToMe()=%d\n", nID, AppliesToMe());

-    MainFrameRepaint();

-    return true;

-}

-

-

-

-

-

-

-

-

-//////////////////////////////////////////////////////////////////////////////

-//

-// Messages

-//

-

-

-bool AlreadyHave(CTxDB& txdb, const CInv& inv)

-{

-    switch (inv.type)

-    {

-    case MSG_TX:    return mapTransactions.count(inv.hash) || txdb.ContainsTx(inv.hash);

-    case MSG_BLOCK: return mapBlockIndex.count(inv.hash) || mapOrphanBlocks.count(inv.hash);

-    }

-    // Don't know what it is, just say we already got one

-    return true;

-}

-

-

-

-

-

-

-

-bool ProcessMessages(CNode* pfrom)

-{

-    CDataStream& vRecv = pfrom->vRecv;

-    if (vRecv.empty())

-        return true;

-    //if (fDebug)

-    //    printf("ProcessMessages(%u bytes)\n", vRecv.size());

-

-    //

-    // Message format

-    //  (4) message start

-    //  (12) command

-    //  (4) size

-    //  (4) checksum

-    //  (x) data

-    //

-

-    loop

-    {

-        // Scan for message start

-        CDataStream::iterator pstart = search(vRecv.begin(), vRecv.end(), BEGIN(pchMessageStart), END(pchMessageStart));

-        int nHeaderSize = vRecv.GetSerializeSize(CMessageHeader());

-        if (vRecv.end() - pstart < nHeaderSize)

-        {

-            if (vRecv.size() > nHeaderSize)

-            {

-                printf("\n\nPROCESSMESSAGE MESSAGESTART NOT FOUND\n\n");

-                vRecv.erase(vRecv.begin(), vRecv.end() - nHeaderSize);

-            }

-            break;

-        }

-        if (pstart - vRecv.begin() > 0)

-            printf("\n\nPROCESSMESSAGE SKIPPED %d BYTES\n\n", pstart - vRecv.begin());

-        vRecv.erase(vRecv.begin(), pstart);

-

-        // Read header

-        vector<char> vHeaderSave(vRecv.begin(), vRecv.begin() + nHeaderSize);

-        CMessageHeader hdr;

-        vRecv >> hdr;

-        if (!hdr.IsValid())

-        {

-            printf("\n\nPROCESSMESSAGE: ERRORS IN HEADER %s\n\n\n", hdr.GetCommand().c_str());

-            continue;

-        }

-        string strCommand = hdr.GetCommand();

-

-        // Message size

-        unsigned int nMessageSize = hdr.nMessageSize;

-        if (nMessageSize > MAX_SIZE)

-        {

-            printf("ProcessMessage(%s, %u bytes) : nMessageSize > MAX_SIZE\n", strCommand.c_str(), nMessageSize);

-            continue;

-        }

-        if (nMessageSize > vRecv.size())

-        {

-            // Rewind and wait for rest of message

-            ///// need a mechanism to give up waiting for overlong message size error

-            vRecv.insert(vRecv.begin(), vHeaderSave.begin(), vHeaderSave.end());

-            break;

-        }

-

-        // Copy message to its own buffer

-        CDataStream vMsg(vRecv.begin(), vRecv.begin() + nMessageSize, vRecv.nType, vRecv.nVersion);

-        vRecv.ignore(nMessageSize);

-

-        // Checksum

-        if (vRecv.GetVersion() >= 209)

-        {

-            uint256 hash = Hash(vMsg.begin(), vMsg.end());

-            unsigned int nChecksum = 0;

-            memcpy(&nChecksum, &hash, sizeof(nChecksum));

-            if (nChecksum != hdr.nChecksum)

-            {

-                printf("ProcessMessage(%s, %u bytes) : CHECKSUM ERROR nChecksum=%08x hdr.nChecksum=%08x\n",

-                       strCommand.c_str(), nMessageSize, nChecksum, hdr.nChecksum);

-                continue;

-            }

-        }

-

-        // Process message

-        bool fRet = false;

-        try

-        {

-            CRITICAL_BLOCK(cs_main)

-                fRet = ProcessMessage(pfrom, strCommand, vMsg);

-            if (fShutdown)

-                return true;

-        }

-        catch (std::ios_base::failure& e)

-        {

-            if (strstr(e.what(), "end of data"))

-            {

-                // Allow exceptions from underlength message on vRecv

-                printf("ProcessMessage(%s, %u bytes) : Exception '%s' caught, normally caused by a message being shorter than its stated length\n", strCommand.c_str(), nMessageSize, e.what());

-            }

-            else if (strstr(e.what(), "size too large"))

-            {

-                // Allow exceptions from overlong size

-                printf("ProcessMessage(%s, %u bytes) : Exception '%s' caught\n", strCommand.c_str(), nMessageSize, e.what());

-            }

-            else

-            {

-                PrintException(&e, "ProcessMessage()");

-            }

-        }

-        catch (std::exception& e) {

-            PrintException(&e, "ProcessMessage()");

-        } catch (...) {

-            PrintException(NULL, "ProcessMessage()");

-        }

-

-        if (!fRet)

-            printf("ProcessMessage(%s, %u bytes) FAILED\n", strCommand.c_str(), nMessageSize);

-    }

-

-    vRecv.Compact();

-    return true;

-}

-

-

-

-

-bool ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)

-{

-    static map<unsigned int, vector<unsigned char> > mapReuseKey;

-    RandAddSeedPerfmon();

-    if (fDebug)

-        printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());

-    printf("received: %s (%d bytes)\n", strCommand.c_str(), vRecv.size());

-    if (mapArgs.count("-dropmessagestest") && GetRand(atoi(mapArgs["-dropmessagestest"])) == 0)

-    {

-        printf("dropmessagestest DROPPING RECV MESSAGE\n");

-        return true;

-    }

-

-

-

-

-

-    if (strCommand == "version")

-    {

-        // Each connection can only send one version message

-        if (pfrom->nVersion != 0)

-            return false;

-

-        int64 nTime;

-        CAddress addrMe;

-        CAddress addrFrom;

-        uint64 nNonce = 1;

-        vRecv >> pfrom->nVersion >> pfrom->nServices >> nTime >> addrMe;

-        if (pfrom->nVersion == 10300)

-            pfrom->nVersion = 300;

-        if (pfrom->nVersion >= 106 && !vRecv.empty())

-            vRecv >> addrFrom >> nNonce;

-        if (pfrom->nVersion >= 106 && !vRecv.empty())

-            vRecv >> pfrom->strSubVer;

-        if (pfrom->nVersion >= 209 && !vRecv.empty())

-            vRecv >> pfrom->nStartingHeight;

-

-        if (pfrom->nVersion == 0)

-            return false;

-

-        // Disconnect if we connected to ourself

-        if (nNonce == nLocalHostNonce && nNonce > 1)

-        {

-            pfrom->fDisconnect = true;

-            return true;

-        }

-

-        pfrom->fClient = !(pfrom->nServices & NODE_NETWORK);

-        if (pfrom->fClient)

-        {

-            pfrom->vSend.nType |= SER_BLOCKHEADERONLY;

-            pfrom->vRecv.nType |= SER_BLOCKHEADERONLY;

-        }

-

-        AddTimeData(pfrom->addr.ip, nTime);

-

-        // Change version

-        if (pfrom->nVersion >= 209)

-            pfrom->PushMessage("verack");

-        pfrom->vSend.SetVersion(min(pfrom->nVersion, VERSION));

-        if (pfrom->nVersion < 209)

-            pfrom->vRecv.SetVersion(min(pfrom->nVersion, VERSION));

-

-        // Ask the first connected node for block updates

-        static int nAskedForBlocks;

-        if (!pfrom->fClient && (nAskedForBlocks < 1 || vNodes.size() <= 1))

-        {

-            nAskedForBlocks++;

-            pfrom->PushGetBlocks(pindexBest, uint256(0));

-        }

-

-        // Relay alerts

-        CRITICAL_BLOCK(cs_mapAlerts)

-            foreach(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)

-                item.second.RelayTo(pfrom);

-

-        pfrom->fSuccessfullyConnected = true;

-

-        printf("version message: version %d, blocks=%d\n", pfrom->nVersion, pfrom->nStartingHeight);

-    }

-

-

-    else if (pfrom->nVersion == 0)

-    {

-        // Must have a version message before anything else

-        return false;

-    }

-

-

-    else if (strCommand == "verack")

-    {

-        pfrom->vRecv.SetVersion(min(pfrom->nVersion, VERSION));

-    }

-

-

-    else if (strCommand == "addr")

-    {

-        vector<CAddress> vAddr;

-        vRecv >> vAddr;

-        if (pfrom->nVersion < 200) // don't want addresses from 0.1.5

-            return true;

-        if (pfrom->nVersion < 209 && mapAddresses.size() > 1000) // don't want addr from 0.2.0 unless seeding

-            return true;

-        if (vAddr.size() > 1000)

-            return error("message addr size() = %d", vAddr.size());

-

-        // Store the new addresses

-        foreach(CAddress& addr, vAddr)

-        {

-            if (fShutdown)

-                return true;

-            // ignore IPv6 for now, since it isn't implemented anyway

-            if (!addr.IsIPv4())

-                continue;

-            addr.nTime = GetAdjustedTime() - 2 * 60 * 60;

-            if (pfrom->fGetAddr || vAddr.size() > 10)

-                addr.nTime -= 5 * 24 * 60 * 60;

-            AddAddress(addr);

-            pfrom->AddAddressKnown(addr);

-            if (!pfrom->fGetAddr && addr.IsRoutable())

-            {

-                // Relay to a limited number of other nodes

-                CRITICAL_BLOCK(cs_vNodes)

-                {

-                    // Use deterministic randomness to send to

-                    // the same places for 12 hours at a time

-                    static uint256 hashSalt;

-                    if (hashSalt == 0)

-                        RAND_bytes((unsigned char*)&hashSalt, sizeof(hashSalt));

-                    uint256 hashRand = addr.ip ^ ((GetTime()+addr.ip)/(12*60*60)) ^ hashSalt;

-                    multimap<uint256, CNode*> mapMix;

-                    foreach(CNode* pnode, vNodes)

-                        mapMix.insert(make_pair(hashRand = Hash(BEGIN(hashRand), END(hashRand)), pnode));

-                    int nRelayNodes = 4;

-                    for (multimap<uint256, CNode*>::iterator mi = mapMix.begin(); mi != mapMix.end() && nRelayNodes-- > 0; ++mi)

-                        ((*mi).second)->PushAddress(addr);

-                }

-            }

-        }

-        if (vAddr.size() < 1000)

-            pfrom->fGetAddr = false;

-    }

-

-

-    else if (strCommand == "inv")

-    {

-        vector<CInv> vInv;

-        vRecv >> vInv;

-        if (vInv.size() > 50000)

-            return error("message inv size() = %d", vInv.size());

-

-        CTxDB txdb("r");

-        foreach(const CInv& inv, vInv)

-        {

-            if (fShutdown)

-                return true;

-            pfrom->AddInventoryKnown(inv);

-

-            bool fAlreadyHave = AlreadyHave(txdb, inv);

-            printf("  got inventory: %s  %s\n", inv.ToString().c_str(), fAlreadyHave ? "have" : "new");

-

-            if (!fAlreadyHave)

-                pfrom->AskFor(inv);

-            else if (inv.type == MSG_BLOCK && mapOrphanBlocks.count(inv.hash))

-                pfrom->PushGetBlocks(pindexBest, GetOrphanRoot(mapOrphanBlocks[inv.hash]));

-

-            // Track requests for our stuff

-            CRITICAL_BLOCK(cs_mapRequestCount)

-            {

-                map<uint256, int>::iterator mi = mapRequestCount.find(inv.hash);

-                if (mi != mapRequestCount.end())

-                    (*mi).second++;

-            }

-        }

-    }

-

-

-    else if (strCommand == "getdata")

-    {

-        vector<CInv> vInv;

-        vRecv >> vInv;

-        if (vInv.size() > 50000)

-            return error("message getdata size() = %d", vInv.size());

-

-        foreach(const CInv& inv, vInv)

-        {

-            if (fShutdown)

-                return true;

-            printf("received getdata for: %s\n", inv.ToString().c_str());

-

-            if (inv.type == MSG_BLOCK)

-            {

-                // Send block from disk

-                map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(inv.hash);

-                if (mi != mapBlockIndex.end())

-                {

-                    //// could optimize this to send header straight from blockindex for client

-                    CBlock block;

-                    block.ReadFromDisk((*mi).second, !pfrom->fClient);

-                    pfrom->PushMessage("block", block);

-

-                    // Trigger them to send a getblocks request for the next batch of inventory

-                    if (inv.hash == pfrom->hashContinue)

-                    {

-                        // Bypass PushInventory, this must send even if redundant,

-                        // and we want it right after the last block so they don't

-                        // wait for other stuff first.

-                        vector<CInv> vInv;

-                        vInv.push_back(CInv(MSG_BLOCK, hashBestChain));

-                        pfrom->PushMessage("inv", vInv);

-                        pfrom->hashContinue = 0;

-                    }

-                }

-            }

-            else if (inv.IsKnownType())

-            {

-                // Send stream from relay memory

-                CRITICAL_BLOCK(cs_mapRelay)

-                {

-                    map<CInv, CDataStream>::iterator mi = mapRelay.find(inv);

-                    if (mi != mapRelay.end())

-                        pfrom->PushMessage(inv.GetCommand(), (*mi).second);

-                }

-            }

-

-            // Track requests for our stuff

-            CRITICAL_BLOCK(cs_mapRequestCount)

-            {

-                map<uint256, int>::iterator mi = mapRequestCount.find(inv.hash);

-                if (mi != mapRequestCount.end())

-                    (*mi).second++;

-            }

-        }

-    }

-

-

-    else if (strCommand == "getblocks")

-    {

-        CBlockLocator locator;

-        uint256 hashStop;

-        vRecv >> locator >> hashStop;

-

-        // Find the first block the caller has in the main chain

-        CBlockIndex* pindex = locator.GetBlockIndex();

-

-        // Send the rest of the chain

-        if (pindex)

-            pindex = pindex->pnext;

-        int nLimit = 500 + locator.GetDistanceBack();

-        printf("getblocks %d to %s limit %d\n", (pindex ? pindex->nHeight : -1), hashStop.ToString().substr(0,20).c_str(), nLimit);

-        for (; pindex; pindex = pindex->pnext)

-        {

-            if (pindex->GetBlockHash() == hashStop)

-            {

-                printf("  getblocks stopping at %d %s\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str());

-                break;

-            }

-            pfrom->PushInventory(CInv(MSG_BLOCK, pindex->GetBlockHash()));

-            if (--nLimit <= 0)

-            {

-                // When this block is requested, we'll send an inv that'll make them

-                // getblocks the next batch of inventory.

-                printf("  getblocks stopping at limit %d %s\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str());

-                pfrom->hashContinue = pindex->GetBlockHash();

-                break;

-            }

-        }

-    }

-

-

-    else if (strCommand == "tx")

-    {

-        vector<uint256> vWorkQueue;

-        CDataStream vMsg(vRecv);

-        CTransaction tx;

-        vRecv >> tx;

-

-        CInv inv(MSG_TX, tx.GetHash());

-        pfrom->AddInventoryKnown(inv);

-

-        bool fMissingInputs = false;

-        if (tx.AcceptTransaction(true, &fMissingInputs))

-        {

-            AddToWalletIfMine(tx, NULL);

-            RelayMessage(inv, vMsg);

-            mapAlreadyAskedFor.erase(inv);

-            vWorkQueue.push_back(inv.hash);

-

-            // Recursively process any orphan transactions that depended on this one

-            for (int i = 0; i < vWorkQueue.size(); i++)

-            {

-                uint256 hashPrev = vWorkQueue[i];

-                for (multimap<uint256, CDataStream*>::iterator mi = mapOrphanTransactionsByPrev.lower_bound(hashPrev);

-                     mi != mapOrphanTransactionsByPrev.upper_bound(hashPrev);

-                     ++mi)

-                {

-                    const CDataStream& vMsg = *((*mi).second);

-                    CTransaction tx;

-                    CDataStream(vMsg) >> tx;

-                    CInv inv(MSG_TX, tx.GetHash());

-

-                    if (tx.AcceptTransaction(true))

-                    {

-                        printf("   accepted orphan tx %s\n", inv.hash.ToString().substr(0,6).c_str());

-                        AddToWalletIfMine(tx, NULL);

-                        RelayMessage(inv, vMsg);

-                        mapAlreadyAskedFor.erase(inv);

-                        vWorkQueue.push_back(inv.hash);

-                    }

-                }

-            }

-

-            foreach(uint256 hash, vWorkQueue)

-                EraseOrphanTx(hash);

-        }

-        else if (fMissingInputs)

-        {

-            printf("storing orphan tx %s\n", inv.hash.ToString().substr(0,6).c_str());

-            AddOrphanTx(vMsg);

-        }

-    }

-

-

-    else if (strCommand == "block")

-    {

-        auto_ptr<CBlock> pblock(new CBlock);

-        vRecv >> *pblock;

-

-        //// debug print

-        printf("received block %s\n", pblock->GetHash().ToString().substr(0,20).c_str());

-        // pblock->print();

-

-        CInv inv(MSG_BLOCK, pblock->GetHash());

-        pfrom->AddInventoryKnown(inv);

-

-        if (ProcessBlock(pfrom, pblock.release()))

-            mapAlreadyAskedFor.erase(inv);

-    }

-

-

-    else if (strCommand == "getaddr")

-    {

-        // This includes all nodes that are currently online,

-        // since they rebroadcast an addr every 24 hours

-        pfrom->vAddrToSend.clear();

-        int64 nSince = GetAdjustedTime() - 12 * 60 * 60; // in the last 12 hours

-        CRITICAL_BLOCK(cs_mapAddresses)

-        {

-            unsigned int nSize = mapAddresses.size();

-            foreach(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)

-            {

-                if (fShutdown)

-                    return true;

-                const CAddress& addr = item.second;

-                if (addr.nTime > nSince)

-                    pfrom->PushAddress(addr);

-            }

-        }

-    }

-

-

-    else if (strCommand == "checkorder")

-    {

-        uint256 hashReply;

-        CWalletTx order;

-        vRecv >> hashReply >> order;

-

-        /// we have a chance to check the order here

-

-        // Keep giving the same key to the same ip until they use it

-        if (!mapReuseKey.count(pfrom->addr.ip))

-            mapReuseKey[pfrom->addr.ip] = GenerateNewKey();

-

-        // Send back approval of order and pubkey to use

-        CScript scriptPubKey;

-        scriptPubKey << mapReuseKey[pfrom->addr.ip] << OP_CHECKSIG;

-        pfrom->PushMessage("reply", hashReply, (int)0, scriptPubKey);

-    }

-

-

-    else if (strCommand == "submitorder")

-    {

-        uint256 hashReply;

-        CWalletTx wtxNew;

-        vRecv >> hashReply >> wtxNew;

-        wtxNew.fFromMe = false;

-

-        // Broadcast

-        if (!wtxNew.AcceptWalletTransaction())

-        {

-            pfrom->PushMessage("reply", hashReply, (int)1);

-            return error("submitorder AcceptWalletTransaction() failed, returning error 1");

-        }

-        wtxNew.fTimeReceivedIsTxTime = true;

-        AddToWallet(wtxNew);

-        wtxNew.RelayWalletTransaction();

-        mapReuseKey.erase(pfrom->addr.ip);

-

-        // Send back confirmation

-        pfrom->PushMessage("reply", hashReply, (int)0);

-    }

-

-

-    else if (strCommand == "reply")

-    {

-        uint256 hashReply;

-        vRecv >> hashReply;

-

-        CRequestTracker tracker;

-        CRITICAL_BLOCK(pfrom->cs_mapRequests)

-        {

-            map<uint256, CRequestTracker>::iterator mi = pfrom->mapRequests.find(hashReply);

-            if (mi != pfrom->mapRequests.end())

-            {

-                tracker = (*mi).second;

-                pfrom->mapRequests.erase(mi);

-            }

-        }

-        if (!tracker.IsNull())

-            tracker.fn(tracker.param1, vRecv);

-    }

-

-

-    else if (strCommand == "ping")

-    {

-    }

-

-

-    else if (strCommand == "alert")

-    {

-        CAlert alert;

-        vRecv >> alert;

-

-        if (alert.ProcessAlert())

-        {

-            // Relay

-            pfrom->setKnown.insert(alert.GetHash());

-            CRITICAL_BLOCK(cs_vNodes)

-                foreach(CNode* pnode, vNodes)

-                    alert.RelayTo(pnode);

-        }

-    }

-

-

-    else

-    {

-        // Ignore unknown commands for extensibility

-    }

-

-

-    // Update the last seen time for this node's address

-    if (pfrom->fNetworkNode)

-        if (strCommand == "version" || strCommand == "addr" || strCommand == "inv" || strCommand == "getdata" || strCommand == "ping")

-            AddressCurrentlyConnected(pfrom->addr);

-

-

-    return true;

-}

-

-

-

-

-

-

-

-

-

-bool SendMessages(CNode* pto, bool fSendTrickle)

-{

-    CRITICAL_BLOCK(cs_main)

-    {

-        // Don't send anything until we get their version message

-        if (pto->nVersion == 0)

-            return true;

-

-        // Keep-alive ping

-        if (pto->nLastSend && GetTime() - pto->nLastSend > 30 * 60 && pto->vSend.empty())

-            pto->PushMessage("ping");

-

-        // Address refresh broadcast

-        static int64 nLastRebroadcast;

-        if (GetTime() - nLastRebroadcast > 24 * 60 * 60) // every 24 hours

-        {

-            nLastRebroadcast = GetTime();

-            CRITICAL_BLOCK(cs_vNodes)

-            {

-                foreach(CNode* pnode, vNodes)

-                {

-                    // Periodically clear setAddrKnown to allow refresh broadcasts

-                    pnode->setAddrKnown.clear();

-

-                    // Rebroadcast our address

-                    if (addrLocalHost.IsRoutable() && !fUseProxy)

-                        pnode->PushAddress(addrLocalHost);

-                }

-            }

-        }

-

-        // Resend wallet transactions that haven't gotten in a block yet

-        ResendWalletTransactions();

-

-

-        //

-        // Message: addr

-        //

-        if (fSendTrickle)

-        {

-            vector<CAddress> vAddr;

-            vAddr.reserve(pto->vAddrToSend.size());

-            foreach(const CAddress& addr, pto->vAddrToSend)

-            {

-                // returns true if wasn't already contained in the set

-                if (pto->setAddrKnown.insert(addr).second)

-                {

-                    vAddr.push_back(addr);

-                    // receiver rejects addr messages larger than 1000

-                    if (vAddr.size() >= 1000)

-                    {

-                        pto->PushMessage("addr", vAddr);

-                        vAddr.clear();

-                    }

-                }

-            }

-            pto->vAddrToSend.clear();

-            if (!vAddr.empty())

-                pto->PushMessage("addr", vAddr);

-        }

-

-

-        //

-        // Message: inventory

-        //

-        vector<CInv> vInv;

-        vector<CInv> vInvWait;

-        CRITICAL_BLOCK(pto->cs_inventory)

-        {

-            vInv.reserve(pto->vInventoryToSend.size());

-            vInvWait.reserve(pto->vInventoryToSend.size());

-            foreach(const CInv& inv, pto->vInventoryToSend)

-            {

-                if (pto->setInventoryKnown.count(inv))

-                    continue;

-

-                // trickle out tx inv to protect privacy

-                if (inv.type == MSG_TX && !fSendTrickle)

-                {

-                    // 1/4 of tx invs blast to all immediately

-                    static uint256 hashSalt;

-                    if (hashSalt == 0)

-                        RAND_bytes((unsigned char*)&hashSalt, sizeof(hashSalt));

-                    uint256 hashRand = inv.hash ^ hashSalt;

-                    hashRand = Hash(BEGIN(hashRand), END(hashRand));

-                    bool fTrickleWait = ((hashRand & 3) != 0);

-

-                    // always trickle our own transactions

-                    if (!fTrickleWait)

-                    {

-                        TRY_CRITICAL_BLOCK(cs_mapWallet)

-                        {

-                            map<uint256, CWalletTx>::iterator mi = mapWallet.find(inv.hash);

-                            if (mi != mapWallet.end())

-                            {

-                                CWalletTx& wtx = (*mi).second;

-                                if (wtx.fFromMe)

-                                    fTrickleWait = true;

-                            }

-                        }

-                    }

-

-                    if (fTrickleWait)

-                    {

-                        vInvWait.push_back(inv);

-                        continue;

-                    }

-                }

-

-                // returns true if wasn't already contained in the set

-                if (pto->setInventoryKnown.insert(inv).second)

-                {

-                    vInv.push_back(inv);

-                    if (vInv.size() >= 1000)

-                    {

-                        pto->PushMessage("inv", vInv);

-                        vInv.clear();

-                    }

-                }

-            }

-            pto->vInventoryToSend = vInvWait;

-        }

-        if (!vInv.empty())

-            pto->PushMessage("inv", vInv);

-

-

-        //

-        // Message: getdata

-        //

-        vector<CInv> vGetData;

-        int64 nNow = GetTime() * 1000000;

-        CTxDB txdb("r");

-        while (!pto->mapAskFor.empty() && (*pto->mapAskFor.begin()).first <= nNow)

-        {

-            const CInv& inv = (*pto->mapAskFor.begin()).second;

-            if (!AlreadyHave(txdb, inv))

-            {

-                printf("sending getdata: %s\n", inv.ToString().c_str());

-                vGetData.push_back(inv);

-                if (vGetData.size() >= 1000)

-                {

-                    pto->PushMessage("getdata", vGetData);

-                    vGetData.clear();

-                }

-            }

-            pto->mapAskFor.erase(pto->mapAskFor.begin());

-        }

-        if (!vGetData.empty())

-            pto->PushMessage("getdata", vGetData);

-

-    }

-    return true;

-}

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-//////////////////////////////////////////////////////////////////////////////

-//

-// BitcoinMiner

-//

-

-void GenerateBitcoins(bool fGenerate)

-{

-    if (fGenerateBitcoins != fGenerate)

-    {

-        fGenerateBitcoins = fGenerate;

-        CWalletDB().WriteSetting("fGenerateBitcoins", fGenerateBitcoins);

-        MainFrameRepaint();

-    }

-    if (fGenerateBitcoins)

-    {

-        int nProcessors = boost::thread::hardware_concurrency();

-        printf("%d processors\n", nProcessors);

-        if (nProcessors < 1)

-            nProcessors = 1;

-        if (fLimitProcessors && nProcessors > nLimitProcessors)

-            nProcessors = nLimitProcessors;

-        int nAddThreads = nProcessors - vnThreadsRunning[3];

-        printf("Starting %d BitcoinMiner threads\n", nAddThreads);

-        for (int i = 0; i < nAddThreads; i++)

-        {

-            if (!CreateThread(ThreadBitcoinMiner, NULL))

-                printf("Error: CreateThread(ThreadBitcoinMiner) failed\n");

-            Sleep(10);

-        }

-    }

-}

-

-void ThreadBitcoinMiner(void* parg)

-{

-    try

-    {

-        vnThreadsRunning[3]++;

-        BitcoinMiner();

-        vnThreadsRunning[3]--;

-    }

-    catch (std::exception& e) {

-        vnThreadsRunning[3]--;

-        PrintException(&e, "ThreadBitcoinMiner()");

-    } catch (...) {

-        vnThreadsRunning[3]--;

-        PrintException(NULL, "ThreadBitcoinMiner()");

-    }

-    UIThreadCall(bind(CalledSetStatusBar, "", 0));

-    nHPSTimerStart = 0;

-    if (vnThreadsRunning[3] == 0)

-        dHashesPerSec = 0;

-    printf("ThreadBitcoinMiner exiting, %d threads remaining\n", vnThreadsRunning[3]);

-}

-

-int FormatHashBlocks(void* pbuffer, unsigned int len)

-{

-    unsigned char* pdata = (unsigned char*)pbuffer;

-    unsigned int blocks = 1 + ((len + 8) / 64);

-    unsigned char* pend = pdata + 64 * blocks;

-    memset(pdata + len, 0, 64 * blocks - len);

-    pdata[len] = 0x80;

-    unsigned int bits = len * 8;

-    pend[-1] = (bits >> 0) & 0xff;

-    pend[-2] = (bits >> 8) & 0xff;

-    pend[-3] = (bits >> 16) & 0xff;

-    pend[-4] = (bits >> 24) & 0xff;

-    return blocks;

-}

-

-using CryptoPP::ByteReverse;

-

-static const unsigned int pSHA256InitState[8] =

-{0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};

-

-inline void SHA256Transform(void* pstate, void* pinput, const void* pinit)

-{

-    memcpy(pstate, pinit, 32);

-    CryptoPP::SHA256::Transform((CryptoPP::word32*)pstate, (CryptoPP::word32*)pinput);

-}

-

-static const int NPAR = 32;

-extern void Double_BlockSHA256(const void* pin, void* pout, const void* pinit, unsigned int hash[8][NPAR], const void* init2);

-

-

-

-

-void BitcoinMiner()

-{

-    printf("BitcoinMiner started\n");

-    SetThreadPriority(THREAD_PRIORITY_LOWEST);

-

-    CKey key;

-    key.MakeNewKey();

-    CBigNum bnExtraNonce = 0;

-    while (fGenerateBitcoins)

-    {

-        Sleep(50);

-        if (fShutdown)

-            return;

-        while (vNodes.empty() || IsInitialBlockDownload())

-        {

-            Sleep(1000);

-            if (fShutdown)

-                return;

-            if (!fGenerateBitcoins)

-                return;

-        }

-

-        unsigned int nTransactionsUpdatedLast = nTransactionsUpdated;

-        CBlockIndex* pindexPrev = pindexBest;

-        unsigned int nBits = GetNextWorkRequired(pindexPrev);

-

-

-        //

-        // Create coinbase tx

-        //

-        CTransaction txNew;

-        txNew.vin.resize(1);

-        txNew.vin[0].prevout.SetNull();

-        txNew.vin[0].scriptSig << nBits << ++bnExtraNonce;

-        txNew.vout.resize(1);

-        txNew.vout[0].scriptPubKey << key.GetPubKey() << OP_CHECKSIG;

-

-

-        //

-        // Create new block

-        //

-        auto_ptr<CBlock> pblock(new CBlock());

-        if (!pblock.get())

-            return;

-

-        // Add our coinbase tx as first transaction

-        pblock->vtx.push_back(txNew);

-

-        // Collect the latest transactions into the block

-        int64 nFees = 0;

-        CRITICAL_BLOCK(cs_main)

-        CRITICAL_BLOCK(cs_mapTransactions)

-        {

-            CTxDB txdb("r");

-            map<uint256, CTxIndex> mapTestPool;

-            vector<char> vfAlreadyAdded(mapTransactions.size());

-            bool fFoundSomething = true;

-            uint64 nBlockSize = 0;

-            while (fFoundSomething && nBlockSize < MAX_SIZE/2)

-            {

-                fFoundSomething = false;

-                unsigned int n = 0;

-                for (map<uint256, CTransaction>::iterator mi = mapTransactions.begin(); mi != mapTransactions.end(); ++mi, ++n)

-                {

-                    if (vfAlreadyAdded[n])

-                        continue;

-                    CTransaction& tx = (*mi).second;

-                    if (tx.IsCoinBase() || !tx.IsFinal())

-                        continue;

-                    unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK);

-                    if (nBlockSize + nTxSize >= MAX_BLOCK_SIZE - 10000)

-                        continue;

-

-                    // Transaction fee based on block size

-                    int64 nMinFee = tx.GetMinFee(nBlockSize);

-

-                    map<uint256, CTxIndex> mapTestPoolTmp(mapTestPool);

-                    if (!tx.ConnectInputs(txdb, mapTestPoolTmp, CDiskTxPos(1,1,1), pindexPrev, nFees, false, true, nMinFee))

-                        continue;

-                    swap(mapTestPool, mapTestPoolTmp);

-

-                    pblock->vtx.push_back(tx);

-                    nBlockSize += nTxSize;

-                    vfAlreadyAdded[n] = true;

-                    fFoundSomething = true;

-                }

-            }

-        }

-        pblock->nBits = nBits;

-        pblock->vtx[0].vout[0].nValue = pblock->GetBlockValue(pindexPrev->nHeight+1, nFees);

-        printf("Running BitcoinMiner with %d transactions in block\n", pblock->vtx.size());

-

-

-        //

-        // Prebuild hash buffer

-        //

-        struct tmpworkspace

-        {

-            struct unnamed2

-            {

-                int nVersion;

-                uint256 hashPrevBlock;

-                uint256 hashMerkleRoot;

-                unsigned int nTime;

-                unsigned int nBits;

-                unsigned int nNonce;

-            }

-            block;

-            unsigned char pchPadding0[64];

-            uint256 hash1;

-            unsigned char pchPadding1[64];

-        };

-        char tmpbuf[sizeof(tmpworkspace)+16];

-        tmpworkspace& tmp = *(tmpworkspace*)alignup<16>(tmpbuf);

-

-        tmp.block.nVersion       = pblock->nVersion;

-        tmp.block.hashPrevBlock  = pblock->hashPrevBlock  = (pindexPrev ? pindexPrev->GetBlockHash() : 0);

-        tmp.block.hashMerkleRoot = pblock->hashMerkleRoot = pblock->BuildMerkleTree();

-        tmp.block.nTime          = pblock->nTime          = max((pindexPrev ? pindexPrev->GetMedianTimePast()+1 : 0), GetAdjustedTime());

-        tmp.block.nBits          = pblock->nBits          = nBits;

-        tmp.block.nNonce         = pblock->nNonce         = 0;

-

-        unsigned int nBlocks0 = FormatHashBlocks(&tmp.block, sizeof(tmp.block));

-        unsigned int nBlocks1 = FormatHashBlocks(&tmp.hash1, sizeof(tmp.hash1));

-

-        // Byte swap all the input buffer

-        for (int i = 0; i < sizeof(tmp)/4; i++)

-            ((unsigned int*)&tmp)[i] = ByteReverse(((unsigned int*)&tmp)[i]);

-

-        // Precalc the first half of the first hash, which stays constant

-        uint256 midstatebuf[2];

-        uint256& midstate = *alignup<16>(midstatebuf);

-        SHA256Transform(&midstate, &tmp.block, pSHA256InitState);

-

-

-        //

-        // Search

-        //

-        bool f4WaySSE2 = mapArgs.count("-4way");

-        int64 nStart = GetTime();

-        uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();

-        uint256 hashbuf[2];

-        uint256& hash = *alignup<16>(hashbuf);

-        loop

-        {

-#ifdef FOURWAYSSE2

-            if (f4WaySSE2)

-            {

-                // tcatm's 4-way SSE2 SHA-256

-                tmp.block.nNonce += NPAR;

-                unsigned int thashbuf[9][NPAR];

-                unsigned int (&thash)[9][NPAR] = *alignup<16>(&thashbuf);

-                Double_BlockSHA256((char*)&tmp.block + 64, &tmp.hash1, &midstate, thash, pSHA256InitState);

-                ((unsigned short*)&hash)[14] = 0xffff;

-                for (int j = 0; j < NPAR; j++)

-                {

-                    if (thash[7][j] == 0)

-                    {

-                        for (int i = 0; i < sizeof(hash)/4; i++)

-                            ((unsigned int*)&hash)[i] = thash[i][j];

-                        pblock->nNonce = ByteReverse(tmp.block.nNonce + j);

-                    }

-                }

-            }

-            else

-#endif

-            {

-                // Crypto++ SHA-256

-                tmp.block.nNonce++;

-                SHA256Transform(&tmp.hash1, (char*)&tmp.block + 64, &midstate);

-                SHA256Transform(&hash, &tmp.hash1, pSHA256InitState);

-            }

-

-            if (((unsigned short*)&hash)[14] == 0)

-            {

-                // Byte swap the result after preliminary check

-                for (int i = 0; i < sizeof(hash)/4; i++)

-                    ((unsigned int*)&hash)[i] = ByteReverse(((unsigned int*)&hash)[i]);

-

-                if (hash <= hashTarget)

-                {

-#ifdef FOURWAYSSE2

-                    if (!f4WaySSE2)

-#endif

-                        pblock->nNonce = ByteReverse(tmp.block.nNonce);

-                    assert(hash == pblock->GetHash());

-

-                        //// debug print

-                        printf("BitcoinMiner:\n");

-                        printf("proof-of-work found  \n  hash: %s  \ntarget: %s\n", hash.GetHex().c_str(), hashTarget.GetHex().c_str());

-                        pblock->print();

-                        printf("%s ", DateTimeStrFormat("%x %H:%M", GetTime()).c_str());

-                        printf("generated %s\n", FormatMoney(pblock->vtx[0].vout[0].nValue).c_str());

-

-                    SetThreadPriority(THREAD_PRIORITY_NORMAL);

-                    CRITICAL_BLOCK(cs_main)

-                    {

-                        if (pindexPrev == pindexBest)

-                        {

-                            // Save key

-                            if (!AddKey(key))

-                                return;

-                            key.MakeNewKey();

-

-                            // Track how many getdata requests this block gets

-                            CRITICAL_BLOCK(cs_mapRequestCount)

-                                mapRequestCount[pblock->GetHash()] = 0;

-

-                            // Process this block the same as if we had received it from another node

-                            if (!ProcessBlock(NULL, pblock.release()))

-                                printf("ERROR in BitcoinMiner, ProcessBlock, block not accepted\n");

-                        }

-                    }

-                    SetThreadPriority(THREAD_PRIORITY_LOWEST);

-

-                    Sleep(500);

-                    break;

-                }

-            }

-

-            // Update nTime every few seconds

-            const unsigned int nMask = 0xffff;

-            const int nHashesPerCycle = (nMask+1);

-            if ((tmp.block.nNonce & nMask) == 0)

-            {

-                // Meter hashes/sec

-                static int nCycleCounter;

-                if (nHPSTimerStart == 0)

-                {

-                    nHPSTimerStart = GetTimeMillis();

-                    nCycleCounter = 0;

-                }

-                else

-                    nCycleCounter++;

-                if (GetTimeMillis() - nHPSTimerStart > 4000)

-                {

-                    static CCriticalSection cs;

-                    CRITICAL_BLOCK(cs)

-                    {

-                        if (GetTimeMillis() - nHPSTimerStart > 4000)

-                        {

-                            dHashesPerSec = 1000.0 * nHashesPerCycle * nCycleCounter / (GetTimeMillis() - nHPSTimerStart);

-                            nHPSTimerStart = GetTimeMillis();

-                            nCycleCounter = 0;

-                            string strStatus = strprintf("    %.0f khash/s", dHashesPerSec/1000.0);

-                            UIThreadCall(bind(CalledSetStatusBar, strStatus, 0));

-                            static int64 nLogTime;

-                            if (GetTime() - nLogTime > 30 * 60)

-                            {

-                                nLogTime = GetTime();

-                                printf("%s ", DateTimeStrFormat("%x %H:%M", GetTime()).c_str());

-                                printf("hashmeter %3d CPUs %6.0f khash/s\n", vnThreadsRunning[3], dHashesPerSec/1000.0);

-                            }

-                        }

-                    }

-                }

-

-                // Check for stop or if block needs to be rebuilt

-                if (fShutdown)

-                    return;

-                if (!fGenerateBitcoins)

-                    return;

-                if (fLimitProcessors && vnThreadsRunning[3] > nLimitProcessors)

-                    return;

-                if (vNodes.empty())

-                    break;

-                if (tmp.block.nNonce == 0)

-                    break;

-                if (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60)

-                    break;

-                if (pindexPrev != pindexBest)

-                    break;

-

-                pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());

-                tmp.block.nTime = ByteReverse(pblock->nTime);

-            }

-        }

-    }

-}

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-//////////////////////////////////////////////////////////////////////////////

-//

-// 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->fSpent)

-                continue;

-            nTotal += pcoin->GetCredit(true);

-        }

-    }

-

-    //printf("GetBalance() %"PRI64d"ms\n", GetTimeMillis() - nStart);

-    return nTotal;

-}

-

-

-int GetRandInt(int nMax)

-{

-    return GetRand(nMax);

-}

-

-bool SelectCoins(int64 nTargetValue, set<CWalletTx*>& setCoinsRet)

-{

-    setCoinsRet.clear();

-

-    // List of values less than target

-    int64 nLowestLarger = INT64_MAX;

-    CWalletTx* pcoinLowestLarger = NULL;

-    vector<pair<int64, CWalletTx*> > 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);

-

-       foreach(CWalletTx* pcoin, vCoins)

-       {

-            if (!pcoin->IsFinal() || pcoin->fSpent)

-                continue;

-            int64 n = pcoin->GetCredit();

-            if (n <= 0)

-                continue;

-            if (n < nTargetValue)

-            {

-                vValue.push_back(make_pair(n, pcoin));

-                nTotalLower += n;

-            }

-            else if (n == nTargetValue)

-            {

-                setCoinsRet.insert(pcoin);

-                return true;

-            }

-            else if (n < nLowestLarger)

-            {

-                nLowestLarger = n;

-                pcoinLowestLarger = pcoin;

-            }

-        }

-    }

-

-    if (nTotalLower < nTargetValue)

-    {

-        if (pcoinLowestLarger == NULL)

-            return false;

-        setCoinsRet.insert(pcoinLowestLarger);

-        return true;

-    }

-

-    // 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 (pcoinLowestLarger && nLowestLarger - nTargetValue <= nBest - nTargetValue)

-        setCoinsRet.insert(pcoinLowestLarger);

-    else

-    {

-        for (int i = 0; i < vValue.size(); i++)

-            if (vfBest[i])

-                setCoinsRet.insert(vValue[i].second);

-

-        //// 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 CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CKey& keyRet, int64& nFeeRequiredRet)

-{

-    nFeeRequiredRet = 0;

-    CRITICAL_BLOCK(cs_main)

-    {

-        // txdb must be opened before the mapWallet lock

-        CTxDB txdb("r");

-        CRITICAL_BLOCK(cs_mapWallet)

-        {

-            int64 nFee = nTransactionFee;

-            loop

-            {

-                wtxNew.vin.clear();

-                wtxNew.vout.clear();

-                wtxNew.fFromMe = true;

-                if (nValue < 0)

-                    return false;

-                int64 nValueOut = nValue;

-                int64 nTotalValue = nValue + nFee;

-

-                // Choose coins to use

-                set<CWalletTx*> setCoins;

-                if (!SelectCoins(nTotalValue, setCoins))

-                    return false;

-                int64 nValueIn = 0;

-                foreach(CWalletTx* pcoin, setCoins)

-                    nValueIn += pcoin->GetCredit();

-

-                // Fill a vout to the payee

-                bool fChangeFirst = GetRand(2);

-                if (!fChangeFirst)

-                    wtxNew.vout.push_back(CTxOut(nValueOut, scriptPubKey));

-

-                // Fill a vout back to self with any change

-                if (nValueIn > nTotalValue)

-                {

-                    // 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.

-

-                    // New private key

-                    if (keyRet.IsNull())

-                        keyRet.MakeNewKey();

-

-                    // Fill a vout to ourself, using same address type as the payment

-                    CScript scriptChange;

-                    if (scriptPubKey.GetBitcoinAddressHash160() != 0)

-                        scriptChange.SetBitcoinAddress(keyRet.GetPubKey());

-                    else

-                        scriptChange << keyRet.GetPubKey() << OP_CHECKSIG;

-                    wtxNew.vout.push_back(CTxOut(nValueIn - nTotalValue, scriptChange));

-                }

-

-                // Fill a vout to the payee

-                if (fChangeFirst)

-                    wtxNew.vout.push_back(CTxOut(nValueOut, scriptPubKey));

-

-                // Fill vin

-                foreach(CWalletTx* pcoin, setCoins)

-                    for (int nOut = 0; nOut < pcoin->vout.size(); nOut++)

-                        if (pcoin->vout[nOut].IsMine())

-                            wtxNew.vin.push_back(CTxIn(pcoin->GetHash(), nOut));

-

-                // Sign

-                int nIn = 0;

-                foreach(CWalletTx* pcoin, setCoins)

-                    for (int nOut = 0; nOut < pcoin->vout.size(); nOut++)

-                        if (pcoin->vout[nOut].IsMine())

-                            if (!SignSignature(*pcoin, wtxNew, nIn++))

-                                return false;

-

-                // Check that enough fee is included

-                if (nFee < wtxNew.GetMinFee())

-                {

-                    nFee = nFeeRequiredRet = wtxNew.GetMinFee();

-                    continue;

-                }

-

-                // Fill vtxPrev by copying from previous transactions vtxPrev

-                wtxNew.AddSupportingTransactions(txdb);

-                wtxNew.fTimeReceivedIsTxTime = true;

-

-                break;

-            }

-        }

-    }

-    return true;

-}

-

-// Call after CreateTransaction unless you want to abort

-bool CommitTransaction(CWalletTx& wtxNew, const CKey& key)

-{

-    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");

-

-            // Add the change's private key to wallet

-            if (!key.IsNull() && !AddKey(key))

-                throw runtime_error("CommitTransaction() : AddKey failed\n");

-

-            // 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;

-            foreach(const CTxIn& txin, wtxNew.vin)

-                setCoins.insert(&mapWallet[txin.prevout.hash]);

-            foreach(CWalletTx* pcoin, setCoins)

-            {

-                pcoin->fSpent = true;

-                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.AcceptTransaction())

-        {

-            // 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;

-}

-

-

-

-

-string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)

-{

-    CRITICAL_BLOCK(cs_main)

-    {

-        CKey key;

-        int64 nFeeRequired;

-        if (!CreateTransaction(scriptPubKey, nValue, wtxNew, key, nFeeRequired))

-        {

-            string strError;

-            if (nValue + nFeeRequired > GetBalance())

-                strError = strprintf(_("Error: This is an oversized transaction that requires a transaction fee of %s  "), 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, key))

-            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 "";

-}

-

-

-

-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);

-}

+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Distributed under the MIT/X11 software license, see the accompanying
+// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+
+#include "headers.h"
+#include "cryptopp/sha.h"
+
+
+
+
+
+//
+// Global state
+//
+
+CCriticalSection cs_main;
+
+map<uint256, CTransaction> mapTransactions;
+CCriticalSection cs_mapTransactions;
+unsigned int nTransactionsUpdated = 0;
+map<COutPoint, CInPoint> mapNextTx;
+
+map<uint256, CBlockIndex*> mapBlockIndex;
+const uint256 hashGenesisBlock("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f");
+CBlockIndex* pindexGenesisBlock = NULL;
+int nBestHeight = -1;
+CBigNum bnBestChainWork = 0;
+CBigNum bnBestInvalidWork = 0;
+uint256 hashBestChain = 0;
+CBlockIndex* pindexBest = NULL;
+int64 nTimeBestReceived = 0;
+
+map<uint256, CBlock*> mapOrphanBlocks;
+multimap<uint256, CBlock*> mapOrphanBlocksByPrev;
+
+map<uint256, CDataStream*> mapOrphanTransactions;
+multimap<uint256, CDataStream*> mapOrphanTransactionsByPrev;
+
+map<uint256, CWalletTx> mapWallet;
+vector<uint256> vWalletUpdated;
+CCriticalSection cs_mapWallet;
+
+map<vector<unsigned char>, CPrivKey> mapKeys;
+map<uint160, vector<unsigned char> > mapPubKeys;
+CCriticalSection cs_mapKeys;
+CKey keyUser;
+
+map<uint256, int> mapRequestCount;
+CCriticalSection cs_mapRequestCount;
+
+map<string, string> mapAddressBook;
+CCriticalSection cs_mapAddressBook;
+
+vector<unsigned char> vchDefaultKey;
+
+double dHashesPerSec;
+int64 nHPSTimerStart;
+
+// Settings
+int fGenerateBitcoins = false;
+int64 nTransactionFee = 0;
+CAddress addrIncoming;
+int fLimitProcessors = false;
+int nLimitProcessors = 1;
+int fMinimizeToTray = true;
+int fMinimizeOnClose = true;
+
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// mapKeys
+//
+
+bool AddKey(const CKey& key)
+{
+    CRITICAL_BLOCK(cs_mapKeys)
+    {
+        mapKeys[key.GetPubKey()] = key.GetPrivKey();
+        mapPubKeys[Hash160(key.GetPubKey())] = key.GetPubKey();
+    }
+    return CWalletDB().WriteKey(key.GetPubKey(), key.GetPrivKey());
+}
+
+vector<unsigned char> GenerateNewKey()
+{
+    RandAddSeedPerfmon();
+    CKey key;
+    key.MakeNewKey();
+    if (!AddKey(key))
+        throw runtime_error("GenerateNewKey() : AddKey failed\n");
+    return key.GetPubKey();
+}
+
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// mapWallet
+//
+
+bool AddToWallet(const CWalletTx& wtxIn)
+{
+    uint256 hash = wtxIn.GetHash();
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        // Inserts only if not already there, returns tx inserted or tx found
+        pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
+        CWalletTx& wtx = (*ret.first).second;
+        bool fInsertedNew = ret.second;
+        if (fInsertedNew)
+            wtx.nTimeReceived = GetAdjustedTime();
+
+        bool fUpdated = false;
+        if (!fInsertedNew)
+        {
+            // Merge
+            if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
+            {
+                wtx.hashBlock = wtxIn.hashBlock;
+                fUpdated = true;
+            }
+            if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
+            {
+                wtx.vMerkleBranch = wtxIn.vMerkleBranch;
+                wtx.nIndex = wtxIn.nIndex;
+                fUpdated = true;
+            }
+            if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
+            {
+                wtx.fFromMe = wtxIn.fFromMe;
+                fUpdated = true;
+            }
+            if (wtxIn.fSpent && wtxIn.fSpent != wtx.fSpent)
+            {
+                wtx.fSpent = wtxIn.fSpent;
+                fUpdated = true;
+            }
+        }
+
+        //// debug print
+        printf("AddToWallet %s  %s%s\n", wtxIn.GetHash().ToString().substr(0,6).c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
+
+        // Write to disk
+        if (fInsertedNew || fUpdated)
+            if (!wtx.WriteToDisk())
+                return false;
+
+        // If default receiving address gets used, replace it with a new one
+        CScript scriptDefaultKey;
+        scriptDefaultKey.SetBitcoinAddress(vchDefaultKey);
+        foreach(const CTxOut& txout, wtx.vout)
+        {
+            if (txout.scriptPubKey == scriptDefaultKey)
+            {
+                CWalletDB walletdb;
+                walletdb.WriteDefaultKey(GenerateNewKey());
+                walletdb.WriteName(PubKeyToAddress(vchDefaultKey), "");
+            }
+        }
+
+        // Notify UI
+        vWalletUpdated.push_back(hash);
+    }
+
+    // Refresh UI
+    MainFrameRepaint();
+    return true;
+}
+
+bool AddToWalletIfMine(const CTransaction& tx, const CBlock* pblock)
+{
+    if (tx.IsMine() || mapWallet.count(tx.GetHash()))
+    {
+        CWalletTx wtx(tx);
+        // Get merkle branch if transaction was found in a block
+        if (pblock)
+            wtx.SetMerkleBranch(pblock);
+        return AddToWallet(wtx);
+    }
+    return true;
+}
+
+bool EraseFromWallet(uint256 hash)
+{
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        if (mapWallet.erase(hash))
+            CWalletDB().EraseTx(hash);
+    }
+    return true;
+}
+
+void WalletUpdateSpent(const COutPoint& prevout)
+{
+    // Anytime a signature is successfully verified, it's proof the outpoint is spent.
+    // Update the wallet spent flag if it doesn't know due to wallet.dat being
+    // restored from backup or the user making copies of wallet.dat.
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
+        if (mi != mapWallet.end())
+        {
+            CWalletTx& wtx = (*mi).second;
+            if (!wtx.fSpent && wtx.vout[prevout.n].IsMine())
+            {
+                printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
+                wtx.fSpent = true;
+                wtx.WriteToDisk();
+                vWalletUpdated.push_back(prevout.hash);
+            }
+        }
+    }
+}
+
+
+
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// mapOrphanTransactions
+//
+
+void AddOrphanTx(const CDataStream& vMsg)
+{
+    CTransaction tx;
+    CDataStream(vMsg) >> tx;
+    uint256 hash = tx.GetHash();
+    if (mapOrphanTransactions.count(hash))
+        return;
+    CDataStream* pvMsg = mapOrphanTransactions[hash] = new CDataStream(vMsg);
+    foreach(const CTxIn& txin, tx.vin)
+        mapOrphanTransactionsByPrev.insert(make_pair(txin.prevout.hash, pvMsg));
+}
+
+void EraseOrphanTx(uint256 hash)
+{
+    if (!mapOrphanTransactions.count(hash))
+        return;
+    const CDataStream* pvMsg = mapOrphanTransactions[hash];
+    CTransaction tx;
+    CDataStream(*pvMsg) >> tx;
+    foreach(const CTxIn& txin, tx.vin)
+    {
+        for (multimap<uint256, CDataStream*>::iterator mi = mapOrphanTransactionsByPrev.lower_bound(txin.prevout.hash);
+             mi != mapOrphanTransactionsByPrev.upper_bound(txin.prevout.hash);)
+        {
+            if ((*mi).second == pvMsg)
+                mapOrphanTransactionsByPrev.erase(mi++);
+            else
+                mi++;
+        }
+    }
+    delete pvMsg;
+    mapOrphanTransactions.erase(hash);
+}
+
+
+
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// CTransaction
+//
+
+bool CTxIn::IsMine() const
+{
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
+        if (mi != mapWallet.end())
+        {
+            const CWalletTx& prev = (*mi).second;
+            if (prevout.n < prev.vout.size())
+                if (prev.vout[prevout.n].IsMine())
+                    return true;
+        }
+    }
+    return false;
+}
+
+int64 CTxIn::GetDebit() const
+{
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        map<uint256, CWalletTx>::iterator mi = mapWallet.find(prevout.hash);
+        if (mi != mapWallet.end())
+        {
+            const CWalletTx& prev = (*mi).second;
+            if (prevout.n < prev.vout.size())
+                if (prev.vout[prevout.n].IsMine())
+                    return prev.vout[prevout.n].nValue;
+        }
+    }
+    return 0;
+}
+
+int64 CWalletTx::GetTxTime() const
+{
+    if (!fTimeReceivedIsTxTime && hashBlock != 0)
+    {
+        // If we did not receive the transaction directly, we rely on the block's
+        // time to figure out when it happened.  We use the median over a range
+        // of blocks to try to filter out inaccurate block times.
+        map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
+        if (mi != mapBlockIndex.end())
+        {
+            CBlockIndex* pindex = (*mi).second;
+            if (pindex)
+                return pindex->GetMedianTime();
+        }
+    }
+    return nTimeReceived;
+}
+
+int CWalletTx::GetRequestCount() const
+{
+    // Returns -1 if it wasn't being tracked
+    int nRequests = -1;
+    CRITICAL_BLOCK(cs_mapRequestCount)
+    {
+        if (IsCoinBase())
+        {
+            // Generated block
+            if (hashBlock != 0)
+            {
+                map<uint256, int>::iterator mi = mapRequestCount.find(hashBlock);
+                if (mi != mapRequestCount.end())
+                    nRequests = (*mi).second;
+            }
+        }
+        else
+        {
+            // Did anyone request this transaction?
+            map<uint256, int>::iterator mi = mapRequestCount.find(GetHash());
+            if (mi != mapRequestCount.end())
+            {
+                nRequests = (*mi).second;
+
+                // How about the block it's in?
+                if (nRequests == 0 && hashBlock != 0)
+                {
+                    map<uint256, int>::iterator mi = mapRequestCount.find(hashBlock);
+                    if (mi != mapRequestCount.end())
+                        nRequests = (*mi).second;
+                    else
+                        nRequests = 1; // If it's in someone else's block it must have got out
+                }
+            }
+        }
+    }
+    return nRequests;
+}
+
+
+
+
+int CMerkleTx::SetMerkleBranch(const CBlock* pblock)
+{
+    if (fClient)
+    {
+        if (hashBlock == 0)
+            return 0;
+    }
+    else
+    {
+        CBlock blockTmp;
+        if (pblock == NULL)
+        {
+            // Load the block this tx is in
+            CTxIndex txindex;
+            if (!CTxDB("r").ReadTxIndex(GetHash(), txindex))
+                return 0;
+            if (!blockTmp.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos))
+                return 0;
+            pblock = &blockTmp;
+        }
+
+        // Update the tx's hashBlock
+        hashBlock = pblock->GetHash();
+
+        // Locate the transaction
+        for (nIndex = 0; nIndex < pblock->vtx.size(); nIndex++)
+            if (pblock->vtx[nIndex] == *(CTransaction*)this)
+                break;
+        if (nIndex == pblock->vtx.size())
+        {
+            vMerkleBranch.clear();
+            nIndex = -1;
+            printf("ERROR: SetMerkleBranch() : couldn't find tx in block\n");
+            return 0;
+        }
+
+        // Fill in merkle branch
+        vMerkleBranch = pblock->GetMerkleBranch(nIndex);
+    }
+
+    // Is the tx in a block that's in the main chain
+    map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
+    if (mi == mapBlockIndex.end())
+        return 0;
+    CBlockIndex* pindex = (*mi).second;
+    if (!pindex || !pindex->IsInMainChain())
+        return 0;
+
+    return pindexBest->nHeight - pindex->nHeight + 1;
+}
+
+
+
+void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
+{
+    vtxPrev.clear();
+
+    const int COPY_DEPTH = 3;
+    if (SetMerkleBranch() < COPY_DEPTH)
+    {
+        vector<uint256> vWorkQueue;
+        foreach(const CTxIn& txin, vin)
+            vWorkQueue.push_back(txin.prevout.hash);
+
+        // This critsect is OK because txdb is already open
+        CRITICAL_BLOCK(cs_mapWallet)
+        {
+            map<uint256, const CMerkleTx*> mapWalletPrev;
+            set<uint256> setAlreadyDone;
+            for (int i = 0; i < vWorkQueue.size(); i++)
+            {
+                uint256 hash = vWorkQueue[i];
+                if (setAlreadyDone.count(hash))
+                    continue;
+                setAlreadyDone.insert(hash);
+
+                CMerkleTx tx;
+                if (mapWallet.count(hash))
+                {
+                    tx = mapWallet[hash];
+                    foreach(const CMerkleTx& txWalletPrev, mapWallet[hash].vtxPrev)
+                        mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
+                }
+                else if (mapWalletPrev.count(hash))
+                {
+                    tx = *mapWalletPrev[hash];
+                }
+                else if (!fClient && txdb.ReadDiskTx(hash, tx))
+                {
+                    ;
+                }
+                else
+                {
+                    printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
+                    continue;
+                }
+
+                int nDepth = tx.SetMerkleBranch();
+                vtxPrev.push_back(tx);
+
+                if (nDepth < COPY_DEPTH)
+                    foreach(const CTxIn& txin, tx.vin)
+                        vWorkQueue.push_back(txin.prevout.hash);
+            }
+        }
+    }
+
+    reverse(vtxPrev.begin(), vtxPrev.end());
+}
+
+
+
+
+
+
+
+
+
+
+
+bool CTransaction::AcceptTransaction(CTxDB& txdb, bool fCheckInputs, bool* pfMissingInputs)
+{
+    if (pfMissingInputs)
+        *pfMissingInputs = false;
+
+    // Coinbase is only valid in a block, not as a loose transaction
+    if (IsCoinBase())
+        return error("AcceptTransaction() : coinbase as individual tx");
+
+    if (!CheckTransaction())
+        return error("AcceptTransaction() : CheckTransaction failed");
+
+    // To help v0.1.5 clients who would see it as a negative number
+    if ((int64)nLockTime > INT_MAX)
+        return error("AcceptTransaction() : not accepting nLockTime beyond 2038 yet");
+
+    // Do we already have it?
+    uint256 hash = GetHash();
+    CRITICAL_BLOCK(cs_mapTransactions)
+        if (mapTransactions.count(hash))
+            return false;
+    if (fCheckInputs)
+        if (txdb.ContainsTx(hash))
+            return false;
+
+    // Check for conflicts with in-memory transactions
+    CTransaction* ptxOld = NULL;
+    for (int i = 0; i < vin.size(); i++)
+    {
+        COutPoint outpoint = vin[i].prevout;
+        if (mapNextTx.count(outpoint))
+        {
+            // Disable replacement feature for now
+            return false;
+
+            // Allow replacing with a newer version of the same transaction
+            if (i != 0)
+                return false;
+            ptxOld = mapNextTx[outpoint].ptx;
+            if (!IsNewerThan(*ptxOld))
+                return false;
+            for (int i = 0; i < vin.size(); i++)
+            {
+                COutPoint outpoint = vin[i].prevout;
+                if (!mapNextTx.count(outpoint) || mapNextTx[outpoint].ptx != ptxOld)
+                    return false;
+            }
+            break;
+        }
+    }
+
+    // Check against previous transactions
+    map<uint256, CTxIndex> mapUnused;
+    int64 nFees = 0;
+    if (fCheckInputs && !ConnectInputs(txdb, mapUnused, CDiskTxPos(1,1,1), pindexBest, nFees, false, false))
+    {
+        if (pfMissingInputs)
+            *pfMissingInputs = true;
+        return error("AcceptTransaction() : ConnectInputs failed %s", hash.ToString().substr(0,6).c_str());
+    }
+
+    // Store transaction in memory
+    CRITICAL_BLOCK(cs_mapTransactions)
+    {
+        if (ptxOld)
+        {
+            printf("AcceptTransaction() : replacing tx %s with new version\n", ptxOld->GetHash().ToString().c_str());
+            ptxOld->RemoveFromMemoryPool();
+        }
+        AddToMemoryPool();
+    }
+
+    ///// are we sure this is ok when loading transactions or restoring block txes
+    // If updated, erase old tx from wallet
+    if (ptxOld)
+        EraseFromWallet(ptxOld->GetHash());
+
+    printf("AcceptTransaction(): accepted %s\n", hash.ToString().substr(0,6).c_str());
+    return true;
+}
+
+
+bool CTransaction::AddToMemoryPool()
+{
+    // Add to memory pool without checking anything.  Don't call this directly,
+    // call AcceptTransaction to properly check the transaction first.
+    CRITICAL_BLOCK(cs_mapTransactions)
+    {
+        uint256 hash = GetHash();
+        mapTransactions[hash] = *this;
+        for (int i = 0; i < vin.size(); i++)
+            mapNextTx[vin[i].prevout] = CInPoint(&mapTransactions[hash], i);
+        nTransactionsUpdated++;
+    }
+    return true;
+}
+
+
+bool CTransaction::RemoveFromMemoryPool()
+{
+    // Remove transaction from memory pool
+    CRITICAL_BLOCK(cs_mapTransactions)
+    {
+        foreach(const CTxIn& txin, vin)
+            mapNextTx.erase(txin.prevout);
+        mapTransactions.erase(GetHash());
+        nTransactionsUpdated++;
+    }
+    return true;
+}
+
+
+
+
+
+
+int CMerkleTx::GetDepthInMainChain(int& nHeightRet) const
+{
+    if (hashBlock == 0 || nIndex == -1)
+        return 0;
+
+    // Find the block it claims to be in
+    map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
+    if (mi == mapBlockIndex.end())
+        return 0;
+    CBlockIndex* pindex = (*mi).second;
+    if (!pindex || !pindex->IsInMainChain())
+        return 0;
+
+    // Make sure the merkle branch connects to this block
+    if (!fMerkleVerified)
+    {
+        if (CBlock::CheckMerkleBranch(GetHash(), vMerkleBranch, nIndex) != pindex->hashMerkleRoot)
+            return 0;
+        fMerkleVerified = true;
+    }
+
+    nHeightRet = pindex->nHeight;
+    return pindexBest->nHeight - pindex->nHeight + 1;
+}
+
+
+int CMerkleTx::GetBlocksToMaturity() const
+{
+    if (!IsCoinBase())
+        return 0;
+    return max(0, (COINBASE_MATURITY+20) - GetDepthInMainChain());
+}
+
+
+bool CMerkleTx::AcceptTransaction(CTxDB& txdb, bool fCheckInputs)
+{
+    if (fClient)
+    {
+        if (!IsInMainChain() && !ClientConnectInputs())
+            return false;
+        return CTransaction::AcceptTransaction(txdb, false);
+    }
+    else
+    {
+        return CTransaction::AcceptTransaction(txdb, fCheckInputs);
+    }
+}
+
+
+
+bool CWalletTx::AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs)
+{
+    CRITICAL_BLOCK(cs_mapTransactions)
+    {
+        foreach(CMerkleTx& tx, vtxPrev)
+        {
+            if (!tx.IsCoinBase())
+            {
+                uint256 hash = tx.GetHash();
+                if (!mapTransactions.count(hash) && !txdb.ContainsTx(hash))
+                    tx.AcceptTransaction(txdb, fCheckInputs);
+            }
+        }
+        if (!IsCoinBase())
+            return AcceptTransaction(txdb, fCheckInputs);
+    }
+    return true;
+}
+
+void ReacceptWalletTransactions()
+{
+    CTxDB txdb("r");
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        foreach(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
+        {
+            CWalletTx& wtx = item.second;
+            if (wtx.fSpent && wtx.IsCoinBase())
+                continue;
+
+            CTxIndex txindex;
+            if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
+            {
+                // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
+                if (!wtx.fSpent)
+                {
+                    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 (!txindex.vSpent[i].IsNull() && wtx.vout[i].IsMine())
+                        {
+                            printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
+                            wtx.fSpent = true;
+                            wtx.WriteToDisk();
+                            break;
+                        }
+                    }
+                }
+            }
+            else
+            {
+                // Reaccept any txes of ours that aren't already in a block
+                if (!wtx.IsCoinBase())
+                    wtx.AcceptWalletTransaction(txdb, false);
+            }
+        }
+    }
+}
+
+
+void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
+{
+    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(0,6).c_str());
+            RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
+        }
+    }
+}
+
+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;
+        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));
+        }
+        foreach(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
+        {
+            CWalletTx& wtx = *item.second;
+            wtx.RelayWalletTransaction(txdb);
+        }
+    }
+}
+
+
+
+
+
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// CBlock and CBlockIndex
+//
+
+bool CBlock::ReadFromDisk(const CBlockIndex* pindex, bool fReadTransactions)
+{
+    if (!ReadFromDisk(pindex->nFile, pindex->nBlockPos, fReadTransactions))
+        return false;
+    if (GetHash() != pindex->GetBlockHash())
+        return error("CBlock::ReadFromDisk() : GetHash() doesn't match index");
+    return true;
+}
+
+uint256 GetOrphanRoot(const CBlock* pblock)
+{
+    // Work back to the first block in the orphan chain
+    while (mapOrphanBlocks.count(pblock->hashPrevBlock))
+        pblock = mapOrphanBlocks[pblock->hashPrevBlock];
+    return pblock->GetHash();
+}
+
+int64 CBlock::GetBlockValue(int nHeight, int64 nFees) const
+{
+    int64 nSubsidy = 50 * COIN;
+
+    // Subsidy is cut in half every 4 years
+    nSubsidy >>= (nHeight / 210000);
+
+    return nSubsidy + nFees;
+}
+
+unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast)
+{
+    const int64 nTargetTimespan = 14 * 24 * 60 * 60; // two weeks
+    const int64 nTargetSpacing = 10 * 60;
+    const int64 nInterval = nTargetTimespan / nTargetSpacing;
+
+    // Genesis block
+    if (pindexLast == NULL)
+        return bnProofOfWorkLimit.GetCompact();
+
+    // Only change once per interval
+    if ((pindexLast->nHeight+1) % nInterval != 0)
+        return pindexLast->nBits;
+
+    // Go back by what we want to be 14 days worth of blocks
+    const CBlockIndex* pindexFirst = pindexLast;
+    for (int i = 0; pindexFirst && i < nInterval-1; i++)
+        pindexFirst = pindexFirst->pprev;
+    assert(pindexFirst);
+
+    // Limit adjustment step
+    int64 nActualTimespan = pindexLast->GetBlockTime() - pindexFirst->GetBlockTime();
+    printf("  nActualTimespan = %"PRI64d"  before bounds\n", nActualTimespan);
+    if (nActualTimespan < nTargetTimespan/4)
+        nActualTimespan = nTargetTimespan/4;
+    if (nActualTimespan > nTargetTimespan*4)
+        nActualTimespan = nTargetTimespan*4;
+
+    // Retarget
+    CBigNum bnNew;
+    bnNew.SetCompact(pindexLast->nBits);
+    bnNew *= nActualTimespan;
+    bnNew /= nTargetTimespan;
+
+    if (bnNew > bnProofOfWorkLimit)
+        bnNew = bnProofOfWorkLimit;
+
+    /// debug print
+    printf("GetNextWorkRequired RETARGET\n");
+    printf("nTargetTimespan = %"PRI64d"    nActualTimespan = %"PRI64d"\n", nTargetTimespan, nActualTimespan);
+    printf("Before: %08x  %s\n", pindexLast->nBits, CBigNum().SetCompact(pindexLast->nBits).getuint256().ToString().c_str());
+    printf("After:  %08x  %s\n", bnNew.GetCompact(), bnNew.getuint256().ToString().c_str());
+
+    return bnNew.GetCompact();
+}
+
+bool CheckProofOfWork(uint256 hash, unsigned int nBits)
+{
+    CBigNum bnTarget;
+    bnTarget.SetCompact(nBits);
+
+    // Check range
+    if (bnTarget <= 0 || bnTarget > bnProofOfWorkLimit)
+        return error("CheckProofOfWork() : nBits below minimum work");
+
+    // Check proof of work matches claimed amount
+    if (hash > bnTarget.getuint256())
+        return error("CheckProofOfWork() : hash doesn't match nBits");
+
+    return true;
+}
+
+bool IsInitialBlockDownload()
+{
+    if (pindexBest == NULL)
+        return true;
+    static int64 nLastUpdate;
+    static CBlockIndex* pindexLastBest;
+    if (pindexBest != pindexLastBest)
+    {
+        pindexLastBest = pindexBest;
+        nLastUpdate = GetTime();
+    }
+    return (GetTime() - nLastUpdate < 10 &&
+            pindexBest->GetBlockTime() < GetTime() - 24 * 60 * 60);
+}
+
+void InvalidChainFound(CBlockIndex* pindexNew)
+{
+    if (pindexNew->bnChainWork > bnBestInvalidWork)
+    {
+        bnBestInvalidWork = pindexNew->bnChainWork;
+        CTxDB().WriteBestInvalidWork(bnBestInvalidWork);
+        MainFrameRepaint();
+    }
+    printf("InvalidChainFound: invalid block=%s  height=%d  work=%s\n", pindexNew->GetBlockHash().ToString().substr(0,20).c_str(), pindexNew->nHeight, pindexNew->bnChainWork.ToString().c_str());
+    printf("InvalidChainFound:  current best=%s  height=%d  work=%s\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());
+    if (pindexBest && bnBestInvalidWork > bnBestChainWork + pindexBest->GetBlockWork() * 6)
+        printf("InvalidChainFound: WARNING: Displayed transactions may not be correct!  You may need to upgrade, or other nodes may need to upgrade.\n");
+}
+
+
+
+
+
+
+
+
+
+
+
+bool CTransaction::DisconnectInputs(CTxDB& txdb)
+{
+    // Relinquish previous transactions' spent pointers
+    if (!IsCoinBase())
+    {
+        foreach(const CTxIn& txin, vin)
+        {
+            COutPoint prevout = txin.prevout;
+
+            // Get prev txindex from disk
+            CTxIndex txindex;
+            if (!txdb.ReadTxIndex(prevout.hash, txindex))
+                return error("DisconnectInputs() : ReadTxIndex failed");
+
+            if (prevout.n >= txindex.vSpent.size())
+                return error("DisconnectInputs() : prevout.n out of range");
+
+            // Mark outpoint as not spent
+            txindex.vSpent[prevout.n].SetNull();
+
+            // Write back
+            txdb.UpdateTxIndex(prevout.hash, txindex);
+        }
+    }
+
+    // Remove transaction from index
+    if (!txdb.EraseTxIndex(*this))
+        return error("DisconnectInputs() : EraseTxPos failed");
+
+    return true;
+}
+
+
+bool CTransaction::ConnectInputs(CTxDB& txdb, map<uint256, CTxIndex>& mapTestPool, CDiskTxPos posThisTx,
+                                 CBlockIndex* pindexBlock, int64& nFees, bool fBlock, bool fMiner, int64 nMinFee)
+{
+    // Take over previous transactions' spent pointers
+    if (!IsCoinBase())
+    {
+        int64 nValueIn = 0;
+        for (int i = 0; i < vin.size(); i++)
+        {
+            COutPoint prevout = vin[i].prevout;
+
+            // Read txindex
+            CTxIndex txindex;
+            bool fFound = true;
+            if (fMiner && mapTestPool.count(prevout.hash))
+            {
+                // Get txindex from current proposed changes
+                txindex = mapTestPool[prevout.hash];
+            }
+            else
+            {
+                // Read txindex from txdb
+                fFound = txdb.ReadTxIndex(prevout.hash, txindex);
+            }
+            if (!fFound && (fBlock || fMiner))
+                return fMiner ? false : error("ConnectInputs() : %s prev tx %s index entry not found", GetHash().ToString().substr(0,6).c_str(),  prevout.hash.ToString().substr(0,6).c_str());
+
+            // Read txPrev
+            CTransaction txPrev;
+            if (!fFound || txindex.pos == CDiskTxPos(1,1,1))
+            {
+                // Get prev tx from single transactions in memory
+                CRITICAL_BLOCK(cs_mapTransactions)
+                {
+                    if (!mapTransactions.count(prevout.hash))
+                        return error("ConnectInputs() : %s mapTransactions prev not found %s", GetHash().ToString().substr(0,6).c_str(),  prevout.hash.ToString().substr(0,6).c_str());
+                    txPrev = mapTransactions[prevout.hash];
+                }
+                if (!fFound)
+                    txindex.vSpent.resize(txPrev.vout.size());
+            }
+            else
+            {
+                // Get prev tx from disk
+                if (!txPrev.ReadFromDisk(txindex.pos))
+                    return error("ConnectInputs() : %s ReadFromDisk prev tx %s failed", GetHash().ToString().substr(0,6).c_str(),  prevout.hash.ToString().substr(0,6).c_str());
+            }
+
+            if (prevout.n >= txPrev.vout.size() || prevout.n >= txindex.vSpent.size())
+                return error("ConnectInputs() : %s prevout.n out of range %d %d %d prev tx %s\n%s", GetHash().ToString().substr(0,6).c_str(), prevout.n, txPrev.vout.size(), txindex.vSpent.size(), prevout.hash.ToString().substr(0,6).c_str(), txPrev.ToString().c_str());
+
+            // If prev is coinbase, check that it's matured
+            if (txPrev.IsCoinBase())
+                for (CBlockIndex* pindex = pindexBlock; pindex && pindexBlock->nHeight - pindex->nHeight < COINBASE_MATURITY; pindex = pindex->pprev)
+                    if (pindex->nBlockPos == txindex.pos.nBlockPos && pindex->nFile == txindex.pos.nFile)
+                        return error("ConnectInputs() : tried to spend coinbase at depth %d", pindexBlock->nHeight - pindex->nHeight);
+
+            // Verify signature
+            if (!VerifySignature(txPrev, *this, i))
+                return error("ConnectInputs() : %s VerifySignature failed", GetHash().ToString().substr(0,6).c_str());
+
+            // Check for conflicts
+            if (!txindex.vSpent[prevout.n].IsNull())
+                return fMiner ? false : error("ConnectInputs() : %s prev tx already used at %s", GetHash().ToString().substr(0,6).c_str(), txindex.vSpent[prevout.n].ToString().c_str());
+
+            // Mark outpoints as spent
+            txindex.vSpent[prevout.n] = posThisTx;
+
+            // Write back
+            if (fBlock)
+                txdb.UpdateTxIndex(prevout.hash, txindex);
+            else if (fMiner)
+                mapTestPool[prevout.hash] = txindex;
+
+            nValueIn += txPrev.vout[prevout.n].nValue;
+
+            // Check for negative or overflow input values
+            if (!MoneyRange(txPrev.vout[prevout.n].nValue) || !MoneyRange(nValueIn))
+                return error("ConnectInputs() : txin values out of range");
+        }
+
+        if (nValueIn < GetValueOut())
+            return error("ConnectInputs() : %s value in < value out", GetHash().ToString().substr(0,6).c_str());
+
+        // Tally transaction fees
+        int64 nTxFee = nValueIn - GetValueOut();
+        if (nTxFee < 0)
+            return error("ConnectInputs() : %s nTxFee < 0", GetHash().ToString().substr(0,6).c_str());
+        if (nTxFee < nMinFee)
+            return false;
+        nFees += nTxFee;
+    }
+
+    if (fBlock)
+    {
+        // Add transaction to disk index
+        if (!txdb.AddTxIndex(*this, posThisTx, pindexBlock->nHeight))
+            return error("ConnectInputs() : AddTxPos failed");
+    }
+    else if (fMiner)
+    {
+        // Add transaction to test pool
+        mapTestPool[GetHash()] = CTxIndex(CDiskTxPos(1,1,1), vout.size());
+    }
+
+    return true;
+}
+
+
+bool CTransaction::ClientConnectInputs()
+{
+    if (IsCoinBase())
+        return false;
+
+    // Take over previous transactions' spent pointers
+    CRITICAL_BLOCK(cs_mapTransactions)
+    {
+        int64 nValueIn = 0;
+        for (int i = 0; i < vin.size(); i++)
+        {
+            // Get prev tx from single transactions in memory
+            COutPoint prevout = vin[i].prevout;
+            if (!mapTransactions.count(prevout.hash))
+                return false;
+            CTransaction& txPrev = mapTransactions[prevout.hash];
+
+            if (prevout.n >= txPrev.vout.size())
+                return false;
+
+            // Verify signature
+            if (!VerifySignature(txPrev, *this, i))
+                return error("ConnectInputs() : VerifySignature failed");
+
+            ///// this is redundant with the mapNextTx stuff, not sure which I want to get rid of
+            ///// this has to go away now that posNext is gone
+            // // Check for conflicts
+            // if (!txPrev.vout[prevout.n].posNext.IsNull())
+            //     return error("ConnectInputs() : prev tx already used");
+            //
+            // // Flag outpoints as used
+            // txPrev.vout[prevout.n].posNext = posThisTx;
+
+            nValueIn += txPrev.vout[prevout.n].nValue;
+        }
+        if (GetValueOut() > nValueIn)
+            return false;
+    }
+
+    return true;
+}
+
+
+
+
+bool CBlock::DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex)
+{
+    // Disconnect in reverse order
+    for (int i = vtx.size()-1; i >= 0; i--)
+        if (!vtx[i].DisconnectInputs(txdb))
+            return false;
+
+    // Update block index on disk without changing it in memory.
+    // The memory index structure will be changed after the db commits.
+    if (pindex->pprev)
+    {
+        CDiskBlockIndex blockindexPrev(pindex->pprev);
+        blockindexPrev.hashNext = 0;
+        txdb.WriteBlockIndex(blockindexPrev);
+    }
+
+    return true;
+}
+
+bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex)
+{
+    // Check it again in case a previous version let a bad block in
+    if (!CheckBlock())
+        return false;
+
+    //// issue here: it doesn't know the version
+    unsigned int nTxPos = pindex->nBlockPos + ::GetSerializeSize(CBlock(), SER_DISK) - 1 + GetSizeOfCompactSize(vtx.size());
+
+    map<uint256, CTxIndex> mapUnused;
+    int64 nFees = 0;
+    foreach(CTransaction& tx, vtx)
+    {
+        CDiskTxPos posThisTx(pindex->nFile, pindex->nBlockPos, nTxPos);
+        nTxPos += ::GetSerializeSize(tx, SER_DISK);
+
+        if (!tx.ConnectInputs(txdb, mapUnused, posThisTx, pindex, nFees, true, false))
+            return false;
+    }
+
+    if (vtx[0].GetValueOut() > GetBlockValue(pindex->nHeight, nFees))
+        return false;
+
+    // Update block index on disk without changing it in memory.
+    // The memory index structure will be changed after the db commits.
+    if (pindex->pprev)
+    {
+        CDiskBlockIndex blockindexPrev(pindex->pprev);
+        blockindexPrev.hashNext = pindex->GetBlockHash();
+        txdb.WriteBlockIndex(blockindexPrev);
+    }
+
+    // Watch for transactions paying to me
+    foreach(CTransaction& tx, vtx)
+        AddToWalletIfMine(tx, this);
+
+    return true;
+}
+
+
+
+bool Reorganize(CTxDB& txdb, CBlockIndex* pindexNew)
+{
+    printf("REORGANIZE\n");
+
+    // Find the fork
+    CBlockIndex* pfork = pindexBest;
+    CBlockIndex* plonger = pindexNew;
+    while (pfork != plonger)
+    {
+        while (plonger->nHeight > pfork->nHeight)
+            if (!(plonger = plonger->pprev))
+                return error("Reorganize() : plonger->pprev is null");
+        if (pfork == plonger)
+            break;
+        if (!(pfork = pfork->pprev))
+            return error("Reorganize() : pfork->pprev is null");
+    }
+
+    // List of what to disconnect
+    vector<CBlockIndex*> vDisconnect;
+    for (CBlockIndex* pindex = pindexBest; pindex != pfork; pindex = pindex->pprev)
+        vDisconnect.push_back(pindex);
+
+    // List of what to connect
+    vector<CBlockIndex*> vConnect;
+    for (CBlockIndex* pindex = pindexNew; pindex != pfork; pindex = pindex->pprev)
+        vConnect.push_back(pindex);
+    reverse(vConnect.begin(), vConnect.end());
+
+    // Disconnect shorter branch
+    vector<CTransaction> vResurrect;
+    foreach(CBlockIndex* pindex, vDisconnect)
+    {
+        CBlock block;
+        if (!block.ReadFromDisk(pindex))
+            return error("Reorganize() : ReadFromDisk for disconnect failed");
+        if (!block.DisconnectBlock(txdb, pindex))
+            return error("Reorganize() : DisconnectBlock failed");
+
+        // Queue memory transactions to resurrect
+        foreach(const CTransaction& tx, block.vtx)
+            if (!tx.IsCoinBase())
+                vResurrect.push_back(tx);
+    }
+
+    // Connect longer branch
+    vector<CTransaction> vDelete;
+    for (int i = 0; i < vConnect.size(); i++)
+    {
+        CBlockIndex* pindex = vConnect[i];
+        CBlock block;
+        if (!block.ReadFromDisk(pindex))
+            return error("Reorganize() : ReadFromDisk for connect failed");
+        if (!block.ConnectBlock(txdb, pindex))
+        {
+            // Invalid block
+            txdb.TxnAbort();
+            return error("Reorganize() : ConnectBlock failed");
+        }
+
+        // Queue memory transactions to delete
+        foreach(const CTransaction& tx, block.vtx)
+            vDelete.push_back(tx);
+    }
+    if (!txdb.WriteHashBestChain(pindexNew->GetBlockHash()))
+        return error("Reorganize() : WriteHashBestChain failed");
+
+    // Commit now because resurrecting could take some time
+    txdb.TxnCommit();
+
+    // Disconnect shorter branch
+    foreach(CBlockIndex* pindex, vDisconnect)
+        if (pindex->pprev)
+            pindex->pprev->pnext = NULL;
+
+    // Connect longer branch
+    foreach(CBlockIndex* pindex, vConnect)
+        if (pindex->pprev)
+            pindex->pprev->pnext = pindex;
+
+    // Resurrect memory transactions that were in the disconnected branch
+    foreach(CTransaction& tx, vResurrect)
+        tx.AcceptTransaction(txdb, false);
+
+    // Delete redundant memory transactions that are in the connected branch
+    foreach(CTransaction& tx, vDelete)
+        tx.RemoveFromMemoryPool();
+
+    return true;
+}
+
+
+bool CBlock::SetBestChain(CTxDB& txdb, CBlockIndex* pindexNew)
+{
+    uint256 hash = GetHash();
+
+    txdb.TxnBegin();
+    if (pindexGenesisBlock == NULL && hash == hashGenesisBlock)
+    {
+        pindexGenesisBlock = pindexNew;
+        txdb.WriteHashBestChain(hash);
+    }
+    else if (hashPrevBlock == hashBestChain)
+    {
+        // Adding to current best branch
+        if (!ConnectBlock(txdb, pindexNew) || !txdb.WriteHashBestChain(hash))
+        {
+            txdb.TxnAbort();
+            InvalidChainFound(pindexNew);
+            return error("SetBestChain() : ConnectBlock failed");
+        }
+        txdb.TxnCommit();
+        pindexNew->pprev->pnext = pindexNew;
+
+        // Delete redundant memory transactions
+        foreach(CTransaction& tx, vtx)
+            tx.RemoveFromMemoryPool();
+    }
+    else
+    {
+        // New best branch
+        if (!Reorganize(txdb, pindexNew))
+        {
+            txdb.TxnAbort();
+            InvalidChainFound(pindexNew);
+            return error("SetBestChain() : Reorganize failed");
+        }
+    }
+    txdb.TxnCommit();
+
+    // New best block
+    hashBestChain = hash;
+    pindexBest = pindexNew;
+    nBestHeight = pindexBest->nHeight;
+    bnBestChainWork = pindexNew->bnChainWork;
+    nTimeBestReceived = GetTime();
+    nTransactionsUpdated++;
+    printf("SetBestChain: new best=%s  height=%d  work=%s\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());
+
+    return true;
+}
+
+
+bool CBlock::AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos)
+{
+    // Check for duplicate
+    uint256 hash = GetHash();
+    if (mapBlockIndex.count(hash))
+        return error("AddToBlockIndex() : %s already exists", hash.ToString().substr(0,20).c_str());
+
+    // Construct new block index object
+    CBlockIndex* pindexNew = new CBlockIndex(nFile, nBlockPos, *this);
+    if (!pindexNew)
+        return error("AddToBlockIndex() : new CBlockIndex failed");
+    map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;
+    pindexNew->phashBlock = &((*mi).first);
+    map<uint256, CBlockIndex*>::iterator miPrev = mapBlockIndex.find(hashPrevBlock);
+    if (miPrev != mapBlockIndex.end())
+    {
+        pindexNew->pprev = (*miPrev).second;
+        pindexNew->nHeight = pindexNew->pprev->nHeight + 1;
+    }
+    pindexNew->bnChainWork = (pindexNew->pprev ? pindexNew->pprev->bnChainWork : 0) + pindexNew->GetBlockWork();
+
+    CTxDB txdb;
+    txdb.WriteBlockIndex(CDiskBlockIndex(pindexNew));
+
+    // New best
+    if (pindexNew->bnChainWork > bnBestChainWork)
+        if (!SetBestChain(txdb, pindexNew))
+            return false;
+
+    txdb.Close();
+
+    if (pindexNew == pindexBest)
+    {
+        // Notify UI to display prev block's coinbase if it was ours
+        static uint256 hashPrevBestCoinBase;
+        CRITICAL_BLOCK(cs_mapWallet)
+            vWalletUpdated.push_back(hashPrevBestCoinBase);
+        hashPrevBestCoinBase = vtx[0].GetHash();
+    }
+
+    MainFrameRepaint();
+    return true;
+}
+
+
+
+
+bool CBlock::CheckBlock() const
+{
+    // These are checks that are independent of context
+    // that can be verified before saving an orphan block.
+
+    // Size limits
+    if (vtx.empty() || vtx.size() > MAX_SIZE || ::GetSerializeSize(*this, SER_DISK) > MAX_SIZE)
+        return error("CheckBlock() : size limits failed");
+
+    // Check timestamp
+    if (GetBlockTime() > GetAdjustedTime() + 2 * 60 * 60)
+        return error("CheckBlock() : block timestamp too far in the future");
+
+    // First transaction must be coinbase, the rest must not be
+    if (vtx.empty() || !vtx[0].IsCoinBase())
+        return error("CheckBlock() : first tx is not coinbase");
+    for (int i = 1; i < vtx.size(); i++)
+        if (vtx[i].IsCoinBase())
+            return error("CheckBlock() : more than one coinbase");
+
+    // Check transactions
+    foreach(const CTransaction& tx, vtx)
+        if (!tx.CheckTransaction())
+            return error("CheckBlock() : CheckTransaction failed");
+
+    // Check proof of work matches claimed amount
+    if (!CheckProofOfWork(GetHash(), nBits))
+        return error("CheckBlock() : proof of work failed");
+
+    // Check merkleroot
+    if (hashMerkleRoot != BuildMerkleTree())
+        return error("CheckBlock() : hashMerkleRoot mismatch");
+
+    return true;
+}
+
+bool CBlock::AcceptBlock()
+{
+    // Check for duplicate
+    uint256 hash = GetHash();
+    if (mapBlockIndex.count(hash))
+        return error("AcceptBlock() : block already in mapBlockIndex");
+
+    // Get prev block index
+    map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashPrevBlock);
+    if (mi == mapBlockIndex.end())
+        return error("AcceptBlock() : prev block not found");
+    CBlockIndex* pindexPrev = (*mi).second;
+
+    // Check timestamp against prev
+    if (GetBlockTime() <= pindexPrev->GetMedianTimePast())
+        return error("AcceptBlock() : block's timestamp is too early");
+
+    // Check that all transactions are finalized
+    foreach(const CTransaction& tx, vtx)
+        if (!tx.IsFinal(pindexPrev->nHeight+1, GetBlockTime()))
+            return error("AcceptBlock() : contains a non-final transaction");
+
+    // Check proof of work
+    if (nBits != GetNextWorkRequired(pindexPrev))
+        return error("AcceptBlock() : incorrect proof of work");
+
+    // Check that the block chain matches the known block chain up to a checkpoint
+    if ((pindexPrev->nHeight+1 == 11111 && hash != uint256("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")) ||
+        (pindexPrev->nHeight+1 == 33333 && hash != uint256("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")) ||
+        (pindexPrev->nHeight+1 == 68555 && hash != uint256("0x00000000001e1b4903550a0b96e9a9405c8a95f387162e4944e8d9fbe501cd6a")) ||
+        (pindexPrev->nHeight+1 == 70567 && hash != uint256("0x00000000006a49b14bcf27462068f1264c961f11fa2e0eddd2be0791e1d4124a")) ||
+        (pindexPrev->nHeight+1 == 74000 && hash != uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")))
+        return error("AcceptBlock() : rejected by checkpoint lockin at %d", pindexPrev->nHeight+1);
+
+    // Scanback checkpoint lockin
+    for (CBlockIndex* pindex = pindexPrev; pindex->nHeight >= 74000; pindex = pindex->pprev)
+    {
+        if (pindex->nHeight == 74000 && pindex->GetBlockHash() != uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"))
+            return error("AcceptBlock() : rejected by scanback lockin at %d", pindex->nHeight);
+        if (pindex->nHeight == 74638 && pindex->GetBlockHash() == uint256("0x0000000000790ab3f22ec756ad43b6ab569abf0bddeb97c67a6f7b1470a7ec1c"))
+            return error("AcceptBlock() : rejected by scanback lockin at %d", pindex->nHeight);
+    }
+
+    // Write block to history file
+    if (!CheckDiskSpace(::GetSerializeSize(*this, SER_DISK)))
+        return error("AcceptBlock() : out of disk space");
+    unsigned int nFile;
+    unsigned int nBlockPos;
+    if (!WriteToDisk(!fClient, nFile, nBlockPos))
+        return error("AcceptBlock() : WriteToDisk failed");
+    if (!AddToBlockIndex(nFile, nBlockPos))
+        return error("AcceptBlock() : AddToBlockIndex failed");
+
+    // Relay inventory, but don't relay old inventory during initial block download
+    if (hashBestChain == hash)
+        CRITICAL_BLOCK(cs_vNodes)
+            foreach(CNode* pnode, vNodes)
+                if (nBestHeight > (pnode->nStartingHeight != -1 ? pnode->nStartingHeight - 2000 : 55000))
+                    pnode->PushInventory(CInv(MSG_BLOCK, hash));
+
+    return true;
+}
+
+bool ProcessBlock(CNode* pfrom, CBlock* pblock)
+{
+    // Check for duplicate
+    uint256 hash = pblock->GetHash();
+    if (mapBlockIndex.count(hash))
+        return error("ProcessBlock() : already have block %d %s", mapBlockIndex[hash]->nHeight, hash.ToString().substr(0,20).c_str());
+    if (mapOrphanBlocks.count(hash))
+        return error("ProcessBlock() : already have block (orphan) %s", hash.ToString().substr(0,20).c_str());
+
+    // Preliminary checks
+    if (!pblock->CheckBlock())
+    {
+        delete pblock;
+        return error("ProcessBlock() : CheckBlock FAILED");
+    }
+
+    // If don't already have its previous block, shunt it off to holding area until we get it
+    if (!mapBlockIndex.count(pblock->hashPrevBlock))
+    {
+        printf("ProcessBlock: ORPHAN BLOCK, prev=%s\n", pblock->hashPrevBlock.ToString().substr(0,20).c_str());
+        mapOrphanBlocks.insert(make_pair(hash, pblock));
+        mapOrphanBlocksByPrev.insert(make_pair(pblock->hashPrevBlock, pblock));
+
+        // Ask this guy to fill in what we're missing
+        if (pfrom)
+            pfrom->PushGetBlocks(pindexBest, GetOrphanRoot(pblock));
+        return true;
+    }
+
+    // Store to disk
+    if (!pblock->AcceptBlock())
+    {
+        delete pblock;
+        return error("ProcessBlock() : AcceptBlock FAILED");
+    }
+    delete pblock;
+
+    // Recursively process any orphan blocks that depended on this one
+    vector<uint256> vWorkQueue;
+    vWorkQueue.push_back(hash);
+    for (int i = 0; i < vWorkQueue.size(); i++)
+    {
+        uint256 hashPrev = vWorkQueue[i];
+        for (multimap<uint256, CBlock*>::iterator mi = mapOrphanBlocksByPrev.lower_bound(hashPrev);
+             mi != mapOrphanBlocksByPrev.upper_bound(hashPrev);
+             ++mi)
+        {
+            CBlock* pblockOrphan = (*mi).second;
+            if (pblockOrphan->AcceptBlock())
+                vWorkQueue.push_back(pblockOrphan->GetHash());
+            mapOrphanBlocks.erase(pblockOrphan->GetHash());
+            delete pblockOrphan;
+        }
+        mapOrphanBlocksByPrev.erase(hashPrev);
+    }
+
+    printf("ProcessBlock: ACCEPTED\n");
+    return true;
+}
+
+
+
+
+
+
+
+
+template<typename Stream>
+bool ScanMessageStart(Stream& s)
+{
+    // Scan ahead to the next pchMessageStart, which should normally be immediately
+    // at the file pointer.  Leaves file pointer at end of pchMessageStart.
+    s.clear(0);
+    short prevmask = s.exceptions(0);
+    const char* p = BEGIN(pchMessageStart);
+    try
+    {
+        loop
+        {
+            char c;
+            s.read(&c, 1);
+            if (s.fail())
+            {
+                s.clear(0);
+                s.exceptions(prevmask);
+                return false;
+            }
+            if (*p != c)
+                p = BEGIN(pchMessageStart);
+            if (*p == c)
+            {
+                if (++p == END(pchMessageStart))
+                {
+                    s.clear(0);
+                    s.exceptions(prevmask);
+                    return true;
+                }
+            }
+        }
+    }
+    catch (...)
+    {
+        s.clear(0);
+        s.exceptions(prevmask);
+        return false;
+    }
+}
+
+bool CheckDiskSpace(uint64 nAdditionalBytes)
+{
+    uint64 nFreeBytesAvailable = filesystem::space(GetDataDir()).available;
+
+    // Check for 15MB because database could create another 10MB log file at any time
+    if (nFreeBytesAvailable < (uint64)15000000 + nAdditionalBytes)
+    {
+        fShutdown = true;
+        string strMessage = _("Warning: Disk space is low  ");
+        strMiscWarning = strMessage;
+        printf("*** %s\n", strMessage.c_str());
+        ThreadSafeMessageBox(strMessage, "Bitcoin", wxOK | wxICON_EXCLAMATION);
+        CreateThread(Shutdown, NULL);
+        return false;
+    }
+    return true;
+}
+
+FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode)
+{
+    if (nFile == -1)
+        return NULL;
+    FILE* file = fopen(strprintf("%s/blk%04d.dat", GetDataDir().c_str(), nFile).c_str(), pszMode);
+    if (!file)
+        return NULL;
+    if (nBlockPos != 0 && !strchr(pszMode, 'a') && !strchr(pszMode, 'w'))
+    {
+        if (fseek(file, nBlockPos, SEEK_SET) != 0)
+        {
+            fclose(file);
+            return NULL;
+        }
+    }
+    return file;
+}
+
+static unsigned int nCurrentBlockFile = 1;
+
+FILE* AppendBlockFile(unsigned int& nFileRet)
+{
+    nFileRet = 0;
+    loop
+    {
+        FILE* file = OpenBlockFile(nCurrentBlockFile, 0, "ab");
+        if (!file)
+            return NULL;
+        if (fseek(file, 0, SEEK_END) != 0)
+            return NULL;
+        // FAT32 filesize max 4GB, fseek and ftell max 2GB, so we must stay under 2GB
+        if (ftell(file) < 0x7F000000 - MAX_SIZE)
+        {
+            nFileRet = nCurrentBlockFile;
+            return file;
+        }
+        fclose(file);
+        nCurrentBlockFile++;
+    }
+}
+
+bool LoadBlockIndex(bool fAllowNew)
+{
+    //
+    // Load block index
+    //
+    CTxDB txdb("cr");
+    if (!txdb.LoadBlockIndex())
+        return false;
+    txdb.Close();
+
+    //
+    // Init with genesis block
+    //
+    if (mapBlockIndex.empty())
+    {
+        if (!fAllowNew)
+            return false;
+
+        // Genesis Block:
+        // CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
+        //   CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
+        //     CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
+        //     CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
+        //   vMerkleTree: 4a5e1e
+
+        // Genesis block
+        const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
+        CTransaction txNew;
+        txNew.vin.resize(1);
+        txNew.vout.resize(1);
+        txNew.vin[0].scriptSig = CScript() << 486604799 << CBigNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
+        txNew.vout[0].nValue = 50 * COIN;
+        txNew.vout[0].scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
+        CBlock block;
+        block.vtx.push_back(txNew);
+        block.hashPrevBlock = 0;
+        block.hashMerkleRoot = block.BuildMerkleTree();
+        block.nVersion = 1;
+        block.nTime    = 1231006505;
+        block.nBits    = 0x1d00ffff;
+        block.nNonce   = 2083236893;
+
+            //// debug print
+            printf("%s\n", block.GetHash().ToString().c_str());
+            printf("%s\n", hashGenesisBlock.ToString().c_str());
+            printf("%s\n", block.hashMerkleRoot.ToString().c_str());
+            assert(block.hashMerkleRoot == uint256("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
+            block.print();
+
+        assert(block.GetHash() == hashGenesisBlock);
+
+        // Start new block file
+        unsigned int nFile;
+        unsigned int nBlockPos;
+        if (!block.WriteToDisk(!fClient, nFile, nBlockPos))
+            return error("LoadBlockIndex() : writing genesis block to disk failed");
+        if (!block.AddToBlockIndex(nFile, nBlockPos))
+            return error("LoadBlockIndex() : genesis block not accepted");
+    }
+
+    return true;
+}
+
+
+
+void PrintBlockTree()
+{
+    // precompute tree structure
+    map<CBlockIndex*, vector<CBlockIndex*> > mapNext;
+    for (map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.begin(); mi != mapBlockIndex.end(); ++mi)
+    {
+        CBlockIndex* pindex = (*mi).second;
+        mapNext[pindex->pprev].push_back(pindex);
+        // test
+        //while (rand() % 3 == 0)
+        //    mapNext[pindex->pprev].push_back(pindex);
+    }
+
+    vector<pair<int, CBlockIndex*> > vStack;
+    vStack.push_back(make_pair(0, pindexGenesisBlock));
+
+    int nPrevCol = 0;
+    while (!vStack.empty())
+    {
+        int nCol = vStack.back().first;
+        CBlockIndex* pindex = vStack.back().second;
+        vStack.pop_back();
+
+        // print split or gap
+        if (nCol > nPrevCol)
+        {
+            for (int i = 0; i < nCol-1; i++)
+                printf("| ");
+            printf("|\\\n");
+        }
+        else if (nCol < nPrevCol)
+        {
+            for (int i = 0; i < nCol; i++)
+                printf("| ");
+            printf("|\n");
+        }
+        nPrevCol = nCol;
+
+        // print columns
+        for (int i = 0; i < nCol; i++)
+            printf("| ");
+
+        // print item
+        CBlock block;
+        block.ReadFromDisk(pindex);
+        printf("%d (%u,%u) %s  %s  tx %d",
+            pindex->nHeight,
+            pindex->nFile,
+            pindex->nBlockPos,
+            block.GetHash().ToString().substr(0,20).c_str(),
+            DateTimeStrFormat("%x %H:%M:%S", block.GetBlockTime()).c_str(),
+            block.vtx.size());
+
+        CRITICAL_BLOCK(cs_mapWallet)
+        {
+            if (mapWallet.count(block.vtx[0].GetHash()))
+            {
+                CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];
+                printf("    mine:  %d  %d  %d", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit());
+            }
+        }
+        printf("\n");
+
+
+        // put the main timechain first
+        vector<CBlockIndex*>& vNext = mapNext[pindex];
+        for (int i = 0; i < vNext.size(); i++)
+        {
+            if (vNext[i]->pnext)
+            {
+                swap(vNext[0], vNext[i]);
+                break;
+            }
+        }
+
+        // iterate children
+        for (int i = 0; i < vNext.size(); i++)
+            vStack.push_back(make_pair(nCol+i, vNext[i]));
+    }
+}
+
+
+
+
+
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// CAlert
+//
+
+map<uint256, CAlert> mapAlerts;
+CCriticalSection cs_mapAlerts;
+
+string GetWarnings(string strFor)
+{
+    int nPriority = 0;
+    string strStatusBar;
+    string strRPC;
+    if (mapArgs.count("-testsafemode"))
+        strRPC = "test";
+
+    // Misc warnings like out of disk space and clock is wrong
+    if (strMiscWarning != "")
+    {
+        nPriority = 1000;
+        strStatusBar = strMiscWarning;
+    }
+
+    // Longer invalid proof-of-work chain
+    if (pindexBest && bnBestInvalidWork > bnBestChainWork + pindexBest->GetBlockWork() * 6)
+    {
+        nPriority = 2000;
+        strStatusBar = strRPC = "WARNING: Displayed transactions may not be correct!  You may need to upgrade, or other nodes may need to upgrade.";
+    }
+
+    // Alerts
+    CRITICAL_BLOCK(cs_mapAlerts)
+    {
+        foreach(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)
+        {
+            const CAlert& alert = item.second;
+            if (alert.AppliesToMe() && alert.nPriority > nPriority)
+            {
+                nPriority = alert.nPriority;
+                strStatusBar = alert.strStatusBar;
+                strRPC = alert.strRPCError;
+            }
+        }
+    }
+
+    if (strFor == "statusbar")
+        return strStatusBar;
+    else if (strFor == "rpc")
+        return strRPC;
+    assert(("GetWarnings() : invalid parameter", false));
+    return "error";
+}
+
+bool CAlert::ProcessAlert()
+{
+    if (!CheckSignature())
+        return false;
+    if (!IsInEffect())
+        return false;
+
+    CRITICAL_BLOCK(cs_mapAlerts)
+    {
+        // Cancel previous alerts
+        for (map<uint256, CAlert>::iterator mi = mapAlerts.begin(); mi != mapAlerts.end();)
+        {
+            const CAlert& alert = (*mi).second;
+            if (Cancels(alert))
+            {
+                printf("cancelling alert %d\n", alert.nID);
+                mapAlerts.erase(mi++);
+            }
+            else if (!alert.IsInEffect())
+            {
+                printf("expiring alert %d\n", alert.nID);
+                mapAlerts.erase(mi++);
+            }
+            else
+                mi++;
+        }
+
+        // Check if this alert has been cancelled
+        foreach(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)
+        {
+            const CAlert& alert = item.second;
+            if (alert.Cancels(*this))
+            {
+                printf("alert already cancelled by %d\n", alert.nID);
+                return false;
+            }
+        }
+
+        // Add to mapAlerts
+        mapAlerts.insert(make_pair(GetHash(), *this));
+    }
+
+    printf("accepted alert %d, AppliesToMe()=%d\n", nID, AppliesToMe());
+    MainFrameRepaint();
+    return true;
+}
+
+
+
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// Messages
+//
+
+
+bool AlreadyHave(CTxDB& txdb, const CInv& inv)
+{
+    switch (inv.type)
+    {
+    case MSG_TX:    return mapTransactions.count(inv.hash) || txdb.ContainsTx(inv.hash);
+    case MSG_BLOCK: return mapBlockIndex.count(inv.hash) || mapOrphanBlocks.count(inv.hash);
+    }
+    // Don't know what it is, just say we already got one
+    return true;
+}
+
+
+
+
+
+
+
+bool ProcessMessages(CNode* pfrom)
+{
+    CDataStream& vRecv = pfrom->vRecv;
+    if (vRecv.empty())
+        return true;
+    //if (fDebug)
+    //    printf("ProcessMessages(%u bytes)\n", vRecv.size());
+
+    //
+    // Message format
+    //  (4) message start
+    //  (12) command
+    //  (4) size
+    //  (4) checksum
+    //  (x) data
+    //
+
+    loop
+    {
+        // Scan for message start
+        CDataStream::iterator pstart = search(vRecv.begin(), vRecv.end(), BEGIN(pchMessageStart), END(pchMessageStart));
+        int nHeaderSize = vRecv.GetSerializeSize(CMessageHeader());
+        if (vRecv.end() - pstart < nHeaderSize)
+        {
+            if (vRecv.size() > nHeaderSize)
+            {
+                printf("\n\nPROCESSMESSAGE MESSAGESTART NOT FOUND\n\n");
+                vRecv.erase(vRecv.begin(), vRecv.end() - nHeaderSize);
+            }
+            break;
+        }
+        if (pstart - vRecv.begin() > 0)
+            printf("\n\nPROCESSMESSAGE SKIPPED %d BYTES\n\n", pstart - vRecv.begin());
+        vRecv.erase(vRecv.begin(), pstart);
+
+        // Read header
+        vector<char> vHeaderSave(vRecv.begin(), vRecv.begin() + nHeaderSize);
+        CMessageHeader hdr;
+        vRecv >> hdr;
+        if (!hdr.IsValid())
+        {
+            printf("\n\nPROCESSMESSAGE: ERRORS IN HEADER %s\n\n\n", hdr.GetCommand().c_str());
+            continue;
+        }
+        string strCommand = hdr.GetCommand();
+
+        // Message size
+        unsigned int nMessageSize = hdr.nMessageSize;
+        if (nMessageSize > MAX_SIZE)
+        {
+            printf("ProcessMessage(%s, %u bytes) : nMessageSize > MAX_SIZE\n", strCommand.c_str(), nMessageSize);
+            continue;
+        }
+        if (nMessageSize > vRecv.size())
+        {
+            // Rewind and wait for rest of message
+            ///// need a mechanism to give up waiting for overlong message size error
+            vRecv.insert(vRecv.begin(), vHeaderSave.begin(), vHeaderSave.end());
+            break;
+        }
+
+        // Copy message to its own buffer
+        CDataStream vMsg(vRecv.begin(), vRecv.begin() + nMessageSize, vRecv.nType, vRecv.nVersion);
+        vRecv.ignore(nMessageSize);
+
+        // Checksum
+        if (vRecv.GetVersion() >= 209)
+        {
+            uint256 hash = Hash(vMsg.begin(), vMsg.end());
+            unsigned int nChecksum = 0;
+            memcpy(&nChecksum, &hash, sizeof(nChecksum));
+            if (nChecksum != hdr.nChecksum)
+            {
+                printf("ProcessMessage(%s, %u bytes) : CHECKSUM ERROR nChecksum=%08x hdr.nChecksum=%08x\n",
+                       strCommand.c_str(), nMessageSize, nChecksum, hdr.nChecksum);
+                continue;
+            }
+        }
+
+        // Process message
+        bool fRet = false;
+        try
+        {
+            CRITICAL_BLOCK(cs_main)
+                fRet = ProcessMessage(pfrom, strCommand, vMsg);
+            if (fShutdown)
+                return true;
+        }
+        catch (std::ios_base::failure& e)
+        {
+            if (strstr(e.what(), "end of data"))
+            {
+                // Allow exceptions from underlength message on vRecv
+                printf("ProcessMessage(%s, %u bytes) : Exception '%s' caught, normally caused by a message being shorter than its stated length\n", strCommand.c_str(), nMessageSize, e.what());
+            }
+            else if (strstr(e.what(), "size too large"))
+            {
+                // Allow exceptions from overlong size
+                printf("ProcessMessage(%s, %u bytes) : Exception '%s' caught\n", strCommand.c_str(), nMessageSize, e.what());
+            }
+            else
+            {
+                PrintException(&e, "ProcessMessage()");
+            }
+        }
+        catch (std::exception& e) {
+            PrintException(&e, "ProcessMessage()");
+        } catch (...) {
+            PrintException(NULL, "ProcessMessage()");
+        }
+
+        if (!fRet)
+            printf("ProcessMessage(%s, %u bytes) FAILED\n", strCommand.c_str(), nMessageSize);
+    }
+
+    vRecv.Compact();
+    return true;
+}
+
+
+
+
+bool ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
+{
+    static map<unsigned int, vector<unsigned char> > mapReuseKey;
+    RandAddSeedPerfmon();
+    if (fDebug)
+        printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
+    printf("received: %s (%d bytes)\n", strCommand.c_str(), vRecv.size());
+    if (mapArgs.count("-dropmessagestest") && GetRand(atoi(mapArgs["-dropmessagestest"])) == 0)
+    {
+        printf("dropmessagestest DROPPING RECV MESSAGE\n");
+        return true;
+    }
+
+
+
+
+
+    if (strCommand == "version")
+    {
+        // Each connection can only send one version message
+        if (pfrom->nVersion != 0)
+            return false;
+
+        int64 nTime;
+        CAddress addrMe;
+        CAddress addrFrom;
+        uint64 nNonce = 1;
+        vRecv >> pfrom->nVersion >> pfrom->nServices >> nTime >> addrMe;
+        if (pfrom->nVersion == 10300)
+            pfrom->nVersion = 300;
+        if (pfrom->nVersion >= 106 && !vRecv.empty())
+            vRecv >> addrFrom >> nNonce;
+        if (pfrom->nVersion >= 106 && !vRecv.empty())
+            vRecv >> pfrom->strSubVer;
+        if (pfrom->nVersion >= 209 && !vRecv.empty())
+            vRecv >> pfrom->nStartingHeight;
+
+        if (pfrom->nVersion == 0)
+            return false;
+
+        // Disconnect if we connected to ourself
+        if (nNonce == nLocalHostNonce && nNonce > 1)
+        {
+            pfrom->fDisconnect = true;
+            return true;
+        }
+
+        pfrom->fClient = !(pfrom->nServices & NODE_NETWORK);
+        if (pfrom->fClient)
+        {
+            pfrom->vSend.nType |= SER_BLOCKHEADERONLY;
+            pfrom->vRecv.nType |= SER_BLOCKHEADERONLY;
+        }
+
+        AddTimeData(pfrom->addr.ip, nTime);
+
+        // Change version
+        if (pfrom->nVersion >= 209)
+            pfrom->PushMessage("verack");
+        pfrom->vSend.SetVersion(min(pfrom->nVersion, VERSION));
+        if (pfrom->nVersion < 209)
+            pfrom->vRecv.SetVersion(min(pfrom->nVersion, VERSION));
+
+        // Ask the first connected node for block updates
+        static int nAskedForBlocks;
+        if (!pfrom->fClient && (nAskedForBlocks < 1 || vNodes.size() <= 1))
+        {
+            nAskedForBlocks++;
+            pfrom->PushGetBlocks(pindexBest, uint256(0));
+        }
+
+        // Relay alerts
+        CRITICAL_BLOCK(cs_mapAlerts)
+            foreach(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)
+                item.second.RelayTo(pfrom);
+
+        pfrom->fSuccessfullyConnected = true;
+
+        printf("version message: version %d, blocks=%d\n", pfrom->nVersion, pfrom->nStartingHeight);
+    }
+
+
+    else if (pfrom->nVersion == 0)
+    {
+        // Must have a version message before anything else
+        return false;
+    }
+
+
+    else if (strCommand == "verack")
+    {
+        pfrom->vRecv.SetVersion(min(pfrom->nVersion, VERSION));
+    }
+
+
+    else if (strCommand == "addr")
+    {
+        vector<CAddress> vAddr;
+        vRecv >> vAddr;
+        if (pfrom->nVersion < 200) // don't want addresses from 0.1.5
+            return true;
+        if (pfrom->nVersion < 209 && mapAddresses.size() > 1000) // don't want addr from 0.2.0 unless seeding
+            return true;
+        if (vAddr.size() > 1000)
+            return error("message addr size() = %d", vAddr.size());
+
+        // Store the new addresses
+        foreach(CAddress& addr, vAddr)
+        {
+            if (fShutdown)
+                return true;
+            // ignore IPv6 for now, since it isn't implemented anyway
+            if (!addr.IsIPv4())
+                continue;
+            addr.nTime = GetAdjustedTime() - 2 * 60 * 60;
+            if (pfrom->fGetAddr || vAddr.size() > 10)
+                addr.nTime -= 5 * 24 * 60 * 60;
+            AddAddress(addr);
+            pfrom->AddAddressKnown(addr);
+            if (!pfrom->fGetAddr && addr.IsRoutable())
+            {
+                // Relay to a limited number of other nodes
+                CRITICAL_BLOCK(cs_vNodes)
+                {
+                    // Use deterministic randomness to send to
+                    // the same places for 12 hours at a time
+                    static uint256 hashSalt;
+                    if (hashSalt == 0)
+                        RAND_bytes((unsigned char*)&hashSalt, sizeof(hashSalt));
+                    uint256 hashRand = addr.ip ^ ((GetTime()+addr.ip)/(12*60*60)) ^ hashSalt;
+                    multimap<uint256, CNode*> mapMix;
+                    foreach(CNode* pnode, vNodes)
+                        mapMix.insert(make_pair(hashRand = Hash(BEGIN(hashRand), END(hashRand)), pnode));
+                    int nRelayNodes = 4;
+                    for (multimap<uint256, CNode*>::iterator mi = mapMix.begin(); mi != mapMix.end() && nRelayNodes-- > 0; ++mi)
+                        ((*mi).second)->PushAddress(addr);
+                }
+            }
+        }
+        if (vAddr.size() < 1000)
+            pfrom->fGetAddr = false;
+    }
+
+
+    else if (strCommand == "inv")
+    {
+        vector<CInv> vInv;
+        vRecv >> vInv;
+        if (vInv.size() > 50000)
+            return error("message inv size() = %d", vInv.size());
+
+        CTxDB txdb("r");
+        foreach(const CInv& inv, vInv)
+        {
+            if (fShutdown)
+                return true;
+            pfrom->AddInventoryKnown(inv);
+
+            bool fAlreadyHave = AlreadyHave(txdb, inv);
+            printf("  got inventory: %s  %s\n", inv.ToString().c_str(), fAlreadyHave ? "have" : "new");
+
+            if (!fAlreadyHave)
+                pfrom->AskFor(inv);
+            else if (inv.type == MSG_BLOCK && mapOrphanBlocks.count(inv.hash))
+                pfrom->PushGetBlocks(pindexBest, GetOrphanRoot(mapOrphanBlocks[inv.hash]));
+
+            // Track requests for our stuff
+            CRITICAL_BLOCK(cs_mapRequestCount)
+            {
+                map<uint256, int>::iterator mi = mapRequestCount.find(inv.hash);
+                if (mi != mapRequestCount.end())
+                    (*mi).second++;
+            }
+        }
+    }
+
+
+    else if (strCommand == "getdata")
+    {
+        vector<CInv> vInv;
+        vRecv >> vInv;
+        if (vInv.size() > 50000)
+            return error("message getdata size() = %d", vInv.size());
+
+        foreach(const CInv& inv, vInv)
+        {
+            if (fShutdown)
+                return true;
+            printf("received getdata for: %s\n", inv.ToString().c_str());
+
+            if (inv.type == MSG_BLOCK)
+            {
+                // Send block from disk
+                map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(inv.hash);
+                if (mi != mapBlockIndex.end())
+                {
+                    //// could optimize this to send header straight from blockindex for client
+                    CBlock block;
+                    block.ReadFromDisk((*mi).second, !pfrom->fClient);
+                    pfrom->PushMessage("block", block);
+
+                    // Trigger them to send a getblocks request for the next batch of inventory
+                    if (inv.hash == pfrom->hashContinue)
+                    {
+                        // Bypass PushInventory, this must send even if redundant,
+                        // and we want it right after the last block so they don't
+                        // wait for other stuff first.
+                        vector<CInv> vInv;
+                        vInv.push_back(CInv(MSG_BLOCK, hashBestChain));
+                        pfrom->PushMessage("inv", vInv);
+                        pfrom->hashContinue = 0;
+                    }
+                }
+            }
+            else if (inv.IsKnownType())
+            {
+                // Send stream from relay memory
+                CRITICAL_BLOCK(cs_mapRelay)
+                {
+                    map<CInv, CDataStream>::iterator mi = mapRelay.find(inv);
+                    if (mi != mapRelay.end())
+                        pfrom->PushMessage(inv.GetCommand(), (*mi).second);
+                }
+            }
+
+            // Track requests for our stuff
+            CRITICAL_BLOCK(cs_mapRequestCount)
+            {
+                map<uint256, int>::iterator mi = mapRequestCount.find(inv.hash);
+                if (mi != mapRequestCount.end())
+                    (*mi).second++;
+            }
+        }
+    }
+
+
+    else if (strCommand == "getblocks")
+    {
+        CBlockLocator locator;
+        uint256 hashStop;
+        vRecv >> locator >> hashStop;
+
+        // Find the first block the caller has in the main chain
+        CBlockIndex* pindex = locator.GetBlockIndex();
+
+        // Send the rest of the chain
+        if (pindex)
+            pindex = pindex->pnext;
+        int nLimit = 500 + locator.GetDistanceBack();
+        printf("getblocks %d to %s limit %d\n", (pindex ? pindex->nHeight : -1), hashStop.ToString().substr(0,20).c_str(), nLimit);
+        for (; pindex; pindex = pindex->pnext)
+        {
+            if (pindex->GetBlockHash() == hashStop)
+            {
+                printf("  getblocks stopping at %d %s\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str());
+                break;
+            }
+            pfrom->PushInventory(CInv(MSG_BLOCK, pindex->GetBlockHash()));
+            if (--nLimit <= 0)
+            {
+                // When this block is requested, we'll send an inv that'll make them
+                // getblocks the next batch of inventory.
+                printf("  getblocks stopping at limit %d %s\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str());
+                pfrom->hashContinue = pindex->GetBlockHash();
+                break;
+            }
+        }
+    }
+
+
+    else if (strCommand == "tx")
+    {
+        vector<uint256> vWorkQueue;
+        CDataStream vMsg(vRecv);
+        CTransaction tx;
+        vRecv >> tx;
+
+        CInv inv(MSG_TX, tx.GetHash());
+        pfrom->AddInventoryKnown(inv);
+
+        bool fMissingInputs = false;
+        if (tx.AcceptTransaction(true, &fMissingInputs))
+        {
+            AddToWalletIfMine(tx, NULL);
+            RelayMessage(inv, vMsg);
+            mapAlreadyAskedFor.erase(inv);
+            vWorkQueue.push_back(inv.hash);
+
+            // Recursively process any orphan transactions that depended on this one
+            for (int i = 0; i < vWorkQueue.size(); i++)
+            {
+                uint256 hashPrev = vWorkQueue[i];
+                for (multimap<uint256, CDataStream*>::iterator mi = mapOrphanTransactionsByPrev.lower_bound(hashPrev);
+                     mi != mapOrphanTransactionsByPrev.upper_bound(hashPrev);
+                     ++mi)
+                {
+                    const CDataStream& vMsg = *((*mi).second);
+                    CTransaction tx;
+                    CDataStream(vMsg) >> tx;
+                    CInv inv(MSG_TX, tx.GetHash());
+
+                    if (tx.AcceptTransaction(true))
+                    {
+                        printf("   accepted orphan tx %s\n", inv.hash.ToString().substr(0,6).c_str());
+                        AddToWalletIfMine(tx, NULL);
+                        RelayMessage(inv, vMsg);
+                        mapAlreadyAskedFor.erase(inv);
+                        vWorkQueue.push_back(inv.hash);
+                    }
+                }
+            }
+
+            foreach(uint256 hash, vWorkQueue)
+                EraseOrphanTx(hash);
+        }
+        else if (fMissingInputs)
+        {
+            printf("storing orphan tx %s\n", inv.hash.ToString().substr(0,6).c_str());
+            AddOrphanTx(vMsg);
+        }
+    }
+
+
+    else if (strCommand == "block")
+    {
+        auto_ptr<CBlock> pblock(new CBlock);
+        vRecv >> *pblock;
+
+        //// debug print
+        printf("received block %s\n", pblock->GetHash().ToString().substr(0,20).c_str());
+        // pblock->print();
+
+        CInv inv(MSG_BLOCK, pblock->GetHash());
+        pfrom->AddInventoryKnown(inv);
+
+        if (ProcessBlock(pfrom, pblock.release()))
+            mapAlreadyAskedFor.erase(inv);
+    }
+
+
+    else if (strCommand == "getaddr")
+    {
+        // This includes all nodes that are currently online,
+        // since they rebroadcast an addr every 24 hours
+        pfrom->vAddrToSend.clear();
+        int64 nSince = GetAdjustedTime() - 12 * 60 * 60; // in the last 12 hours
+        CRITICAL_BLOCK(cs_mapAddresses)
+        {
+            unsigned int nSize = mapAddresses.size();
+            foreach(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
+            {
+                if (fShutdown)
+                    return true;
+                const CAddress& addr = item.second;
+                if (addr.nTime > nSince)
+                    pfrom->PushAddress(addr);
+            }
+        }
+    }
+
+
+    else if (strCommand == "checkorder")
+    {
+        uint256 hashReply;
+        CWalletTx order;
+        vRecv >> hashReply >> order;
+
+        /// we have a chance to check the order here
+
+        // Keep giving the same key to the same ip until they use it
+        if (!mapReuseKey.count(pfrom->addr.ip))
+            mapReuseKey[pfrom->addr.ip] = GenerateNewKey();
+
+        // Send back approval of order and pubkey to use
+        CScript scriptPubKey;
+        scriptPubKey << mapReuseKey[pfrom->addr.ip] << OP_CHECKSIG;
+        pfrom->PushMessage("reply", hashReply, (int)0, scriptPubKey);
+    }
+
+
+    else if (strCommand == "submitorder")
+    {
+        uint256 hashReply;
+        CWalletTx wtxNew;
+        vRecv >> hashReply >> wtxNew;
+        wtxNew.fFromMe = false;
+
+        // Broadcast
+        if (!wtxNew.AcceptWalletTransaction())
+        {
+            pfrom->PushMessage("reply", hashReply, (int)1);
+            return error("submitorder AcceptWalletTransaction() failed, returning error 1");
+        }
+        wtxNew.fTimeReceivedIsTxTime = true;
+        AddToWallet(wtxNew);
+        wtxNew.RelayWalletTransaction();
+        mapReuseKey.erase(pfrom->addr.ip);
+
+        // Send back confirmation
+        pfrom->PushMessage("reply", hashReply, (int)0);
+    }
+
+
+    else if (strCommand == "reply")
+    {
+        uint256 hashReply;
+        vRecv >> hashReply;
+
+        CRequestTracker tracker;
+        CRITICAL_BLOCK(pfrom->cs_mapRequests)
+        {
+            map<uint256, CRequestTracker>::iterator mi = pfrom->mapRequests.find(hashReply);
+            if (mi != pfrom->mapRequests.end())
+            {
+                tracker = (*mi).second;
+                pfrom->mapRequests.erase(mi);
+            }
+        }
+        if (!tracker.IsNull())
+            tracker.fn(tracker.param1, vRecv);
+    }
+
+
+    else if (strCommand == "ping")
+    {
+    }
+
+
+    else if (strCommand == "alert")
+    {
+        CAlert alert;
+        vRecv >> alert;
+
+        if (alert.ProcessAlert())
+        {
+            // Relay
+            pfrom->setKnown.insert(alert.GetHash());
+            CRITICAL_BLOCK(cs_vNodes)
+                foreach(CNode* pnode, vNodes)
+                    alert.RelayTo(pnode);
+        }
+    }
+
+
+    else
+    {
+        // Ignore unknown commands for extensibility
+    }
+
+
+    // Update the last seen time for this node's address
+    if (pfrom->fNetworkNode)
+        if (strCommand == "version" || strCommand == "addr" || strCommand == "inv" || strCommand == "getdata" || strCommand == "ping")
+            AddressCurrentlyConnected(pfrom->addr);
+
+
+    return true;
+}
+
+
+
+
+
+
+
+
+
+bool SendMessages(CNode* pto, bool fSendTrickle)
+{
+    CRITICAL_BLOCK(cs_main)
+    {
+        // Don't send anything until we get their version message
+        if (pto->nVersion == 0)
+            return true;
+
+        // Keep-alive ping
+        if (pto->nLastSend && GetTime() - pto->nLastSend > 30 * 60 && pto->vSend.empty())
+            pto->PushMessage("ping");
+
+        // Address refresh broadcast
+        static int64 nLastRebroadcast;
+        if (GetTime() - nLastRebroadcast > 24 * 60 * 60) // every 24 hours
+        {
+            nLastRebroadcast = GetTime();
+            CRITICAL_BLOCK(cs_vNodes)
+            {
+                foreach(CNode* pnode, vNodes)
+                {
+                    // Periodically clear setAddrKnown to allow refresh broadcasts
+                    pnode->setAddrKnown.clear();
+
+                    // Rebroadcast our address
+                    if (addrLocalHost.IsRoutable() && !fUseProxy)
+                        pnode->PushAddress(addrLocalHost);
+                }
+            }
+        }
+
+        // Resend wallet transactions that haven't gotten in a block yet
+        ResendWalletTransactions();
+
+
+        //
+        // Message: addr
+        //
+        if (fSendTrickle)
+        {
+            vector<CAddress> vAddr;
+            vAddr.reserve(pto->vAddrToSend.size());
+            foreach(const CAddress& addr, pto->vAddrToSend)
+            {
+                // returns true if wasn't already contained in the set
+                if (pto->setAddrKnown.insert(addr).second)
+                {
+                    vAddr.push_back(addr);
+                    // receiver rejects addr messages larger than 1000
+                    if (vAddr.size() >= 1000)
+                    {
+                        pto->PushMessage("addr", vAddr);
+                        vAddr.clear();
+                    }
+                }
+            }
+            pto->vAddrToSend.clear();
+            if (!vAddr.empty())
+                pto->PushMessage("addr", vAddr);
+        }
+
+
+        //
+        // Message: inventory
+        //
+        vector<CInv> vInv;
+        vector<CInv> vInvWait;
+        CRITICAL_BLOCK(pto->cs_inventory)
+        {
+            vInv.reserve(pto->vInventoryToSend.size());
+            vInvWait.reserve(pto->vInventoryToSend.size());
+            foreach(const CInv& inv, pto->vInventoryToSend)
+            {
+                if (pto->setInventoryKnown.count(inv))
+                    continue;
+
+                // trickle out tx inv to protect privacy
+                if (inv.type == MSG_TX && !fSendTrickle)
+                {
+                    // 1/4 of tx invs blast to all immediately
+                    static uint256 hashSalt;
+                    if (hashSalt == 0)
+                        RAND_bytes((unsigned char*)&hashSalt, sizeof(hashSalt));
+                    uint256 hashRand = inv.hash ^ hashSalt;
+                    hashRand = Hash(BEGIN(hashRand), END(hashRand));
+                    bool fTrickleWait = ((hashRand & 3) != 0);
+
+                    // always trickle our own transactions
+                    if (!fTrickleWait)
+                    {
+                        TRY_CRITICAL_BLOCK(cs_mapWallet)
+                        {
+                            map<uint256, CWalletTx>::iterator mi = mapWallet.find(inv.hash);
+                            if (mi != mapWallet.end())
+                            {
+                                CWalletTx& wtx = (*mi).second;
+                                if (wtx.fFromMe)
+                                    fTrickleWait = true;
+                            }
+                        }
+                    }
+
+                    if (fTrickleWait)
+                    {
+                        vInvWait.push_back(inv);
+                        continue;
+                    }
+                }
+
+                // returns true if wasn't already contained in the set
+                if (pto->setInventoryKnown.insert(inv).second)
+                {
+                    vInv.push_back(inv);
+                    if (vInv.size() >= 1000)
+                    {
+                        pto->PushMessage("inv", vInv);
+                        vInv.clear();
+                    }
+                }
+            }
+            pto->vInventoryToSend = vInvWait;
+        }
+        if (!vInv.empty())
+            pto->PushMessage("inv", vInv);
+
+
+        //
+        // Message: getdata
+        //
+        vector<CInv> vGetData;
+        int64 nNow = GetTime() * 1000000;
+        CTxDB txdb("r");
+        while (!pto->mapAskFor.empty() && (*pto->mapAskFor.begin()).first <= nNow)
+        {
+            const CInv& inv = (*pto->mapAskFor.begin()).second;
+            if (!AlreadyHave(txdb, inv))
+            {
+                printf("sending getdata: %s\n", inv.ToString().c_str());
+                vGetData.push_back(inv);
+                if (vGetData.size() >= 1000)
+                {
+                    pto->PushMessage("getdata", vGetData);
+                    vGetData.clear();
+                }
+            }
+            pto->mapAskFor.erase(pto->mapAskFor.begin());
+        }
+        if (!vGetData.empty())
+            pto->PushMessage("getdata", vGetData);
+
+    }
+    return true;
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// BitcoinMiner
+//
+
+void GenerateBitcoins(bool fGenerate)
+{
+    if (fGenerateBitcoins != fGenerate)
+    {
+        fGenerateBitcoins = fGenerate;
+        CWalletDB().WriteSetting("fGenerateBitcoins", fGenerateBitcoins);
+        MainFrameRepaint();
+    }
+    if (fGenerateBitcoins)
+    {
+        int nProcessors = boost::thread::hardware_concurrency();
+        printf("%d processors\n", nProcessors);
+        if (nProcessors < 1)
+            nProcessors = 1;
+        if (fLimitProcessors && nProcessors > nLimitProcessors)
+            nProcessors = nLimitProcessors;
+        int nAddThreads = nProcessors - vnThreadsRunning[3];
+        printf("Starting %d BitcoinMiner threads\n", nAddThreads);
+        for (int i = 0; i < nAddThreads; i++)
+        {
+            if (!CreateThread(ThreadBitcoinMiner, NULL))
+                printf("Error: CreateThread(ThreadBitcoinMiner) failed\n");
+            Sleep(10);
+        }
+    }
+}
+
+void ThreadBitcoinMiner(void* parg)
+{
+    try
+    {
+        vnThreadsRunning[3]++;
+        BitcoinMiner();
+        vnThreadsRunning[3]--;
+    }
+    catch (std::exception& e) {
+        vnThreadsRunning[3]--;
+        PrintException(&e, "ThreadBitcoinMiner()");
+    } catch (...) {
+        vnThreadsRunning[3]--;
+        PrintException(NULL, "ThreadBitcoinMiner()");
+    }
+    UIThreadCall(bind(CalledSetStatusBar, "", 0));
+    nHPSTimerStart = 0;
+    if (vnThreadsRunning[3] == 0)
+        dHashesPerSec = 0;
+    printf("ThreadBitcoinMiner exiting, %d threads remaining\n", vnThreadsRunning[3]);
+}
+
+int FormatHashBlocks(void* pbuffer, unsigned int len)
+{
+    unsigned char* pdata = (unsigned char*)pbuffer;
+    unsigned int blocks = 1 + ((len + 8) / 64);
+    unsigned char* pend = pdata + 64 * blocks;
+    memset(pdata + len, 0, 64 * blocks - len);
+    pdata[len] = 0x80;
+    unsigned int bits = len * 8;
+    pend[-1] = (bits >> 0) & 0xff;
+    pend[-2] = (bits >> 8) & 0xff;
+    pend[-3] = (bits >> 16) & 0xff;
+    pend[-4] = (bits >> 24) & 0xff;
+    return blocks;
+}
+
+using CryptoPP::ByteReverse;
+
+static const unsigned int pSHA256InitState[8] =
+{0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};
+
+inline void SHA256Transform(void* pstate, void* pinput, const void* pinit)
+{
+    memcpy(pstate, pinit, 32);
+    CryptoPP::SHA256::Transform((CryptoPP::word32*)pstate, (CryptoPP::word32*)pinput);
+}
+
+static const int NPAR = 32;
+extern void Double_BlockSHA256(const void* pin, void* pout, const void* pinit, unsigned int hash[8][NPAR], const void* init2);
+
+
+
+
+void BitcoinMiner()
+{
+    printf("BitcoinMiner started\n");
+    SetThreadPriority(THREAD_PRIORITY_LOWEST);
+
+    CKey key;
+    key.MakeNewKey();
+    CBigNum bnExtraNonce = 0;
+    while (fGenerateBitcoins)
+    {
+        Sleep(50);
+        if (fShutdown)
+            return;
+        while (vNodes.empty() || IsInitialBlockDownload())
+        {
+            Sleep(1000);
+            if (fShutdown)
+                return;
+            if (!fGenerateBitcoins)
+                return;
+        }
+
+        unsigned int nTransactionsUpdatedLast = nTransactionsUpdated;
+        CBlockIndex* pindexPrev = pindexBest;
+        unsigned int nBits = GetNextWorkRequired(pindexPrev);
+
+
+        //
+        // Create coinbase tx
+        //
+        CTransaction txNew;
+        txNew.vin.resize(1);
+        txNew.vin[0].prevout.SetNull();
+        txNew.vin[0].scriptSig << nBits << ++bnExtraNonce;
+        txNew.vout.resize(1);
+        txNew.vout[0].scriptPubKey << key.GetPubKey() << OP_CHECKSIG;
+
+
+        //
+        // Create new block
+        //
+        auto_ptr<CBlock> pblock(new CBlock());
+        if (!pblock.get())
+            return;
+
+        // Add our coinbase tx as first transaction
+        pblock->vtx.push_back(txNew);
+
+        // Collect the latest transactions into the block
+        int64 nFees = 0;
+        CRITICAL_BLOCK(cs_main)
+        CRITICAL_BLOCK(cs_mapTransactions)
+        {
+            CTxDB txdb("r");
+            map<uint256, CTxIndex> mapTestPool;
+            vector<char> vfAlreadyAdded(mapTransactions.size());
+            bool fFoundSomething = true;
+            uint64 nBlockSize = 0;
+            while (fFoundSomething && nBlockSize < MAX_SIZE/2)
+            {
+                fFoundSomething = false;
+                unsigned int n = 0;
+                for (map<uint256, CTransaction>::iterator mi = mapTransactions.begin(); mi != mapTransactions.end(); ++mi, ++n)
+                {
+                    if (vfAlreadyAdded[n])
+                        continue;
+                    CTransaction& tx = (*mi).second;
+                    if (tx.IsCoinBase() || !tx.IsFinal())
+                        continue;
+                    unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK);
+                    if (nBlockSize + nTxSize >= MAX_BLOCK_SIZE - 10000)
+                        continue;
+
+                    // Transaction fee based on block size
+                    int64 nMinFee = tx.GetMinFee(nBlockSize);
+
+                    map<uint256, CTxIndex> mapTestPoolTmp(mapTestPool);
+                    if (!tx.ConnectInputs(txdb, mapTestPoolTmp, CDiskTxPos(1,1,1), pindexPrev, nFees, false, true, nMinFee))
+                        continue;
+                    swap(mapTestPool, mapTestPoolTmp);
+
+                    pblock->vtx.push_back(tx);
+                    nBlockSize += nTxSize;
+                    vfAlreadyAdded[n] = true;
+                    fFoundSomething = true;
+                }
+            }
+        }
+        pblock->nBits = nBits;
+        pblock->vtx[0].vout[0].nValue = pblock->GetBlockValue(pindexPrev->nHeight+1, nFees);
+        printf("Running BitcoinMiner with %d transactions in block\n", pblock->vtx.size());
+
+
+        //
+        // Prebuild hash buffer
+        //
+        struct tmpworkspace
+        {
+            struct unnamed2
+            {
+                int nVersion;
+                uint256 hashPrevBlock;
+                uint256 hashMerkleRoot;
+                unsigned int nTime;
+                unsigned int nBits;
+                unsigned int nNonce;
+            }
+            block;
+            unsigned char pchPadding0[64];
+            uint256 hash1;
+            unsigned char pchPadding1[64];
+        };
+        char tmpbuf[sizeof(tmpworkspace)+16];
+        tmpworkspace& tmp = *(tmpworkspace*)alignup<16>(tmpbuf);
+
+        tmp.block.nVersion       = pblock->nVersion;
+        tmp.block.hashPrevBlock  = pblock->hashPrevBlock  = (pindexPrev ? pindexPrev->GetBlockHash() : 0);
+        tmp.block.hashMerkleRoot = pblock->hashMerkleRoot = pblock->BuildMerkleTree();
+        tmp.block.nTime          = pblock->nTime          = max((pindexPrev ? pindexPrev->GetMedianTimePast()+1 : 0), GetAdjustedTime());
+        tmp.block.nBits          = pblock->nBits          = nBits;
+        tmp.block.nNonce         = pblock->nNonce         = 0;
+
+        unsigned int nBlocks0 = FormatHashBlocks(&tmp.block, sizeof(tmp.block));
+        unsigned int nBlocks1 = FormatHashBlocks(&tmp.hash1, sizeof(tmp.hash1));
+
+        // Byte swap all the input buffer
+        for (int i = 0; i < sizeof(tmp)/4; i++)
+            ((unsigned int*)&tmp)[i] = ByteReverse(((unsigned int*)&tmp)[i]);
+
+        // Precalc the first half of the first hash, which stays constant
+        uint256 midstatebuf[2];
+        uint256& midstate = *alignup<16>(midstatebuf);
+        SHA256Transform(&midstate, &tmp.block, pSHA256InitState);
+
+
+        //
+        // Search
+        //
+        bool f4WaySSE2 = mapArgs.count("-4way");
+        int64 nStart = GetTime();
+        uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
+        uint256 hashbuf[2];
+        uint256& hash = *alignup<16>(hashbuf);
+        loop
+        {
+#ifdef FOURWAYSSE2
+            if (f4WaySSE2)
+            {
+                // tcatm's 4-way SSE2 SHA-256
+                tmp.block.nNonce += NPAR;
+                unsigned int thashbuf[9][NPAR];
+                unsigned int (&thash)[9][NPAR] = *alignup<16>(&thashbuf);
+                Double_BlockSHA256((char*)&tmp.block + 64, &tmp.hash1, &midstate, thash, pSHA256InitState);
+                ((unsigned short*)&hash)[14] = 0xffff;
+                for (int j = 0; j < NPAR; j++)
+                {
+                    if (thash[7][j] == 0)
+                    {
+                        for (int i = 0; i < sizeof(hash)/4; i++)
+                            ((unsigned int*)&hash)[i] = thash[i][j];
+                        pblock->nNonce = ByteReverse(tmp.block.nNonce + j);
+                    }
+                }
+            }
+            else
+#endif
+            {
+                // Crypto++ SHA-256
+                tmp.block.nNonce++;
+                SHA256Transform(&tmp.hash1, (char*)&tmp.block + 64, &midstate);
+                SHA256Transform(&hash, &tmp.hash1, pSHA256InitState);
+            }
+
+            if (((unsigned short*)&hash)[14] == 0)
+            {
+                // Byte swap the result after preliminary check
+                for (int i = 0; i < sizeof(hash)/4; i++)
+                    ((unsigned int*)&hash)[i] = ByteReverse(((unsigned int*)&hash)[i]);
+
+                if (hash <= hashTarget)
+                {
+#ifdef FOURWAYSSE2
+                    if (!f4WaySSE2)
+#endif
+                        pblock->nNonce = ByteReverse(tmp.block.nNonce);
+                    assert(hash == pblock->GetHash());
+
+                        //// debug print
+                        printf("BitcoinMiner:\n");
+                        printf("proof-of-work found  \n  hash: %s  \ntarget: %s\n", hash.GetHex().c_str(), hashTarget.GetHex().c_str());
+                        pblock->print();
+                        printf("%s ", DateTimeStrFormat("%x %H:%M", GetTime()).c_str());
+                        printf("generated %s\n", FormatMoney(pblock->vtx[0].vout[0].nValue).c_str());
+
+                    SetThreadPriority(THREAD_PRIORITY_NORMAL);
+                    CRITICAL_BLOCK(cs_main)
+                    {
+                        if (pindexPrev == pindexBest)
+                        {
+                            // Save key
+                            if (!AddKey(key))
+                                return;
+                            key.MakeNewKey();
+
+                            // Track how many getdata requests this block gets
+                            CRITICAL_BLOCK(cs_mapRequestCount)
+                                mapRequestCount[pblock->GetHash()] = 0;
+
+                            // Process this block the same as if we had received it from another node
+                            if (!ProcessBlock(NULL, pblock.release()))
+                                printf("ERROR in BitcoinMiner, ProcessBlock, block not accepted\n");
+                        }
+                    }
+                    SetThreadPriority(THREAD_PRIORITY_LOWEST);
+
+                    Sleep(500);
+                    break;
+                }
+            }
+
+            // Update nTime every few seconds
+            const unsigned int nMask = 0xffff;
+            const int nHashesPerCycle = (nMask+1);
+            if ((tmp.block.nNonce & nMask) == 0)
+            {
+                // Meter hashes/sec
+                static int nCycleCounter;
+                if (nHPSTimerStart == 0)
+                {
+                    nHPSTimerStart = GetTimeMillis();
+                    nCycleCounter = 0;
+                }
+                else
+                    nCycleCounter++;
+                if (GetTimeMillis() - nHPSTimerStart > 4000)
+                {
+                    static CCriticalSection cs;
+                    CRITICAL_BLOCK(cs)
+                    {
+                        if (GetTimeMillis() - nHPSTimerStart > 4000)
+                        {
+                            dHashesPerSec = 1000.0 * nHashesPerCycle * nCycleCounter / (GetTimeMillis() - nHPSTimerStart);
+                            nHPSTimerStart = GetTimeMillis();
+                            nCycleCounter = 0;
+                            string strStatus = strprintf("    %.0f khash/s", dHashesPerSec/1000.0);
+                            UIThreadCall(bind(CalledSetStatusBar, strStatus, 0));
+                            static int64 nLogTime;
+                            if (GetTime() - nLogTime > 30 * 60)
+                            {
+                                nLogTime = GetTime();
+                                printf("%s ", DateTimeStrFormat("%x %H:%M", GetTime()).c_str());
+                                printf("hashmeter %3d CPUs %6.0f khash/s\n", vnThreadsRunning[3], dHashesPerSec/1000.0);
+                            }
+                        }
+                    }
+                }
+
+                // Check for stop or if block needs to be rebuilt
+                if (fShutdown)
+                    return;
+                if (!fGenerateBitcoins)
+                    return;
+                if (fLimitProcessors && vnThreadsRunning[3] > nLimitProcessors)
+                    return;
+                if (vNodes.empty())
+                    break;
+                if (tmp.block.nNonce == 0)
+                    break;
+                if (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60)
+                    break;
+                if (pindexPrev != pindexBest)
+                    break;
+
+                pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
+                tmp.block.nTime = ByteReverse(pblock->nTime);
+            }
+        }
+    }
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// 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->fSpent)
+                continue;
+            nTotal += pcoin->GetCredit(true);
+        }
+    }
+
+    //printf("GetBalance() %"PRI64d"ms\n", GetTimeMillis() - nStart);
+    return nTotal;
+}
+
+
+int GetRandInt(int nMax)
+{
+    return GetRand(nMax);
+}
+
+bool SelectCoins(int64 nTargetValue, set<CWalletTx*>& setCoinsRet)
+{
+    setCoinsRet.clear();
+
+    // List of values less than target
+    int64 nLowestLarger = INT64_MAX;
+    CWalletTx* pcoinLowestLarger = NULL;
+    vector<pair<int64, CWalletTx*> > 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);
+
+       foreach(CWalletTx* pcoin, vCoins)
+       {
+            if (!pcoin->IsFinal() || pcoin->fSpent)
+                continue;
+            int64 n = pcoin->GetCredit();
+            if (n <= 0)
+                continue;
+            if (n < nTargetValue)
+            {
+                vValue.push_back(make_pair(n, pcoin));
+                nTotalLower += n;
+            }
+            else if (n == nTargetValue)
+            {
+                setCoinsRet.insert(pcoin);
+                return true;
+            }
+            else if (n < nLowestLarger)
+            {
+                nLowestLarger = n;
+                pcoinLowestLarger = pcoin;
+            }
+        }
+    }
+
+    if (nTotalLower < nTargetValue)
+    {
+        if (pcoinLowestLarger == NULL)
+            return false;
+        setCoinsRet.insert(pcoinLowestLarger);
+        return true;
+    }
+
+    // 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 (pcoinLowestLarger && nLowestLarger - nTargetValue <= nBest - nTargetValue)
+        setCoinsRet.insert(pcoinLowestLarger);
+    else
+    {
+        for (int i = 0; i < vValue.size(); i++)
+            if (vfBest[i])
+                setCoinsRet.insert(vValue[i].second);
+
+        //// 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 CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CKey& keyRet, int64& nFeeRequiredRet)
+{
+    nFeeRequiredRet = 0;
+    CRITICAL_BLOCK(cs_main)
+    {
+        // txdb must be opened before the mapWallet lock
+        CTxDB txdb("r");
+        CRITICAL_BLOCK(cs_mapWallet)
+        {
+            int64 nFee = nTransactionFee;
+            loop
+            {
+                wtxNew.vin.clear();
+                wtxNew.vout.clear();
+                wtxNew.fFromMe = true;
+                if (nValue < 0)
+                    return false;
+                int64 nValueOut = nValue;
+                int64 nTotalValue = nValue + nFee;
+
+                // Choose coins to use
+                set<CWalletTx*> setCoins;
+                if (!SelectCoins(nTotalValue, setCoins))
+                    return false;
+                int64 nValueIn = 0;
+                foreach(CWalletTx* pcoin, setCoins)
+                    nValueIn += pcoin->GetCredit();
+
+                // Fill a vout to the payee
+                bool fChangeFirst = GetRand(2);
+                if (!fChangeFirst)
+                    wtxNew.vout.push_back(CTxOut(nValueOut, scriptPubKey));
+
+                // Fill a vout back to self with any change
+                if (nValueIn > nTotalValue)
+                {
+                    // 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.
+
+                    // New private key
+                    if (keyRet.IsNull())
+                        keyRet.MakeNewKey();
+
+                    // Fill a vout to ourself, using same address type as the payment
+                    CScript scriptChange;
+                    if (scriptPubKey.GetBitcoinAddressHash160() != 0)
+                        scriptChange.SetBitcoinAddress(keyRet.GetPubKey());
+                    else
+                        scriptChange << keyRet.GetPubKey() << OP_CHECKSIG;
+                    wtxNew.vout.push_back(CTxOut(nValueIn - nTotalValue, scriptChange));
+                }
+
+                // Fill a vout to the payee
+                if (fChangeFirst)
+                    wtxNew.vout.push_back(CTxOut(nValueOut, scriptPubKey));
+
+                // Fill vin
+                foreach(CWalletTx* pcoin, setCoins)
+                    for (int nOut = 0; nOut < pcoin->vout.size(); nOut++)
+                        if (pcoin->vout[nOut].IsMine())
+                            wtxNew.vin.push_back(CTxIn(pcoin->GetHash(), nOut));
+
+                // Sign
+                int nIn = 0;
+                foreach(CWalletTx* pcoin, setCoins)
+                    for (int nOut = 0; nOut < pcoin->vout.size(); nOut++)
+                        if (pcoin->vout[nOut].IsMine())
+                            if (!SignSignature(*pcoin, wtxNew, nIn++))
+                                return false;
+
+                // Check that enough fee is included
+                if (nFee < wtxNew.GetMinFee())
+                {
+                    nFee = nFeeRequiredRet = wtxNew.GetMinFee();
+                    continue;
+                }
+
+                // Fill vtxPrev by copying from previous transactions vtxPrev
+                wtxNew.AddSupportingTransactions(txdb);
+                wtxNew.fTimeReceivedIsTxTime = true;
+
+                break;
+            }
+        }
+    }
+    return true;
+}
+
+// Call after CreateTransaction unless you want to abort
+bool CommitTransaction(CWalletTx& wtxNew, const CKey& key)
+{
+    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");
+
+            // Add the change's private key to wallet
+            if (!key.IsNull() && !AddKey(key))
+                throw runtime_error("CommitTransaction() : AddKey failed\n");
+
+            // 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;
+            foreach(const CTxIn& txin, wtxNew.vin)
+                setCoins.insert(&mapWallet[txin.prevout.hash]);
+            foreach(CWalletTx* pcoin, setCoins)
+            {
+                pcoin->fSpent = true;
+                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.AcceptTransaction())
+        {
+            // 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;
+}
+
+
+
+
+string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
+{
+    CRITICAL_BLOCK(cs_main)
+    {
+        CKey key;
+        int64 nFeeRequired;
+        if (!CreateTransaction(scriptPubKey, nValue, wtxNew, key, nFeeRequired))
+        {
+            string strError;
+            if (nValue + nFeeRequired > GetBalance())
+                strError = strprintf(_("Error: This is an oversized transaction that requires a transaction fee of %s  "), 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, key))
+            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 "";
+}
+
+
+
+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);
+}