move wallet code to separate file

This introduces two new source files, keystore.cpp and wallet.cpp with
corresponding headers. Code is moved from main and db, in a preparation
for a follow-up commit which introduces the classes CWallet and CKeyStore.

16 files changed, 1735 insertions, 1690 deletions

diff --git a/src/db.cpp b/src/db.cpp
index b67e2a6452..30e4bb0d8b 100644
--- a/src/db.cpp
+++ b/src/db.cpp
@@ -584,9 +584,6 @@ bool LoadAddresses()
 // CWalletDB
 //
 
-static set<int64> setKeyPool;
-static CCriticalSection cs_setKeyPool;
-
 bool CWalletDB::ReadAccount(const string& strAccount, CAccount& account)
 {
     account.SetNull();
@@ -831,34 +828,6 @@ bool CWalletDB::LoadWallet()
     return true;
 }
 
-bool LoadWallet(bool& fFirstRunRet)
-{
-    fFirstRunRet = false;
-    if (!CWalletDB("cr+").LoadWallet())
-        return false;
-    fFirstRunRet = vchDefaultKey.empty();
-
-    if (mapKeys.count(vchDefaultKey))
-    {
-        // Set keyUser
-        keyUser.SetPubKey(vchDefaultKey);
-        keyUser.SetPrivKey(mapKeys[vchDefaultKey]);
-    }
-    else
-    {
-        // Create new keyUser and set as default key
-        RandAddSeedPerfmon();
-
-        CWalletDB walletdb;
-        vchDefaultKey = GetKeyFromKeyPool();
-        walletdb.WriteDefaultKey(vchDefaultKey);
-        walletdb.WriteName(PubKeyToAddress(vchDefaultKey), "");
-    }
-
-    CreateThread(ThreadFlushWalletDB, NULL);
-    return true;
-}
-
 void ThreadFlushWalletDB(void* parg)
 {
     static bool fOneThread;
@@ -954,75 +923,3 @@ void BackupWallet(const string& strDest)
 }
 
 
-void CWalletDB::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool)
-{
-    nIndex = -1;
-    keypool.vchPubKey.clear();
-    CRITICAL_BLOCK(cs_main)
-    CRITICAL_BLOCK(cs_mapWallet)
-    CRITICAL_BLOCK(cs_setKeyPool)
-    {
-        // Top up key pool
-        int64 nTargetSize = max(GetArg("-keypool", 100), (int64)0);
-        while (setKeyPool.size() < nTargetSize+1)
-        {
-            int64 nEnd = 1;
-            if (!setKeyPool.empty())
-                nEnd = *(--setKeyPool.end()) + 1;
-            if (!Write(make_pair(string("pool"), nEnd), CKeyPool(GenerateNewKey())))
-                throw runtime_error("ReserveKeyFromKeyPool() : writing generated key failed");
-            setKeyPool.insert(nEnd);
-            printf("keypool added key %"PRI64d", size=%d\n", nEnd, setKeyPool.size());
-        }
-
-        // Get the oldest key
-        assert(!setKeyPool.empty());
-        nIndex = *(setKeyPool.begin());
-        setKeyPool.erase(setKeyPool.begin());
-        if (!Read(make_pair(string("pool"), nIndex), keypool))
-            throw runtime_error("ReserveKeyFromKeyPool() : read failed");
-        if (!mapKeys.count(keypool.vchPubKey))
-            throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
-        assert(!keypool.vchPubKey.empty());
-        printf("keypool reserve %"PRI64d"\n", nIndex);
-    }
-}
-
-void CWalletDB::KeepKey(int64 nIndex)
-{
-    // Remove from key pool
-    CRITICAL_BLOCK(cs_main)
-    CRITICAL_BLOCK(cs_mapWallet)
-    {
-        Erase(make_pair(string("pool"), nIndex));
-    }
-    printf("keypool keep %"PRI64d"\n", nIndex);
-}
-
-void CWalletDB::ReturnKey(int64 nIndex)
-{
-    // Return to key pool
-    CRITICAL_BLOCK(cs_setKeyPool)
-        setKeyPool.insert(nIndex);
-    printf("keypool return %"PRI64d"\n", nIndex);
-}
-
-vector<unsigned char> GetKeyFromKeyPool()
-{
-    CWalletDB walletdb;
-    int64 nIndex = 0;
-    CKeyPool keypool;
-    walletdb.ReserveKeyFromKeyPool(nIndex, keypool);
-    walletdb.KeepKey(nIndex);
-    return keypool.vchPubKey;
-}
-
-int64 GetOldestKeyPoolTime()
-{
-    CWalletDB walletdb;
-    int64 nIndex = 0;
-    CKeyPool keypool;
-    walletdb.ReserveKeyFromKeyPool(nIndex, keypool);
-    walletdb.ReturnKey(nIndex);
-    return keypool.nTime;
-}
diff --git a/src/db.h b/src/db.h
index 9826194ed0..577983725b 100644
--- a/src/db.h
+++ b/src/db.h
@@ -25,8 +25,6 @@ class CAccount;
 class CAccountingEntry;
 class CBlockLocator;
 
-extern std::map<std::string, std::string> mapAddressBook;
-extern CCriticalSection cs_mapAddressBook;
 extern std::vector<unsigned char> vchDefaultKey;
 extern bool fClient;
 extern int nBestHeight;
@@ -39,6 +37,8 @@ extern DbEnv dbenv;
 extern void DBFlush(bool fShutdown);
 extern std::vector<unsigned char> GetKeyFromKeyPool();
 extern int64 GetOldestKeyPoolTime();
+extern void ThreadFlushWalletDB(void* parg);
+
 
 
 
@@ -494,33 +494,9 @@ public:
             ReturnKey();
     }
 
-    std::vector<unsigned char> GetReservedKey()
-    {
-        if (nIndex == -1)
-        {
-            CKeyPool keypool;
-            CWalletDB().ReserveKeyFromKeyPool(nIndex, keypool);
-            vchPubKey = keypool.vchPubKey;
-        }
-        assert(!vchPubKey.empty());
-        return vchPubKey;
-    }
-
-    void KeepKey()
-    {
-        if (nIndex != -1)
-            CWalletDB().KeepKey(nIndex);
-        nIndex = -1;
-        vchPubKey.clear();
-    }
-
-    void ReturnKey()
-    {
-        if (nIndex != -1)
-            CWalletDB::ReturnKey(nIndex);
-        nIndex = -1;
-        vchPubKey.clear();
-    }
+    std::vector<unsigned char> GetReservedKey();
+    void KeepKey();
+    void ReturnKey();
 };
 
 #endif
diff --git a/src/headers.h b/src/headers.h
index 9e81e27d1d..d1844eb24e 100644
--- a/src/headers.h
+++ b/src/headers.h
@@ -91,10 +91,8 @@
 #include "serialize.h"
 #include "uint256.h"
 #include "util.h"
-#include "key.h"
 #include "bignum.h"
 #include "base58.h"
-#include "script.h"
 #include "main.h"
 #ifdef GUI
 #include "uibase.h"
diff --git a/src/keystore.cpp b/src/keystore.cpp
new file mode 100644
index 0000000000..51f39a5251
--- /dev/null
+++ b/src/keystore.cpp
@@ -0,0 +1,33 @@
+// Copyright (c) 2009-2011 Satoshi Nakamoto & Bitcoin developers
+// 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 "db.h"
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// mapKeys
+//
+
+std::vector<unsigned char> GenerateNewKey()
+{
+    RandAddSeedPerfmon();
+    CKey key;
+    key.MakeNewKey();
+    if (!AddKey(key))
+        throw std::runtime_error("GenerateNewKey() : AddKey failed");
+    return key.GetPubKey();
+}
+
+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());
+}
diff --git a/src/keystore.h b/src/keystore.h
new file mode 100644
index 0000000000..2f37ec5078
--- /dev/null
+++ b/src/keystore.h
@@ -0,0 +1,10 @@
+// Copyright (c) 2009-2011 Satoshi Nakamoto & Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+#ifndef BITCOIN_KEYSTORE_H
+#define BITCOIN_KEYSTORE_H
+
+bool AddKey(const CKey& key);
+std::vector<unsigned char> GenerateNewKey();
+
+#endif
diff --git a/src/main.cpp b/src/main.cpp
index 108842f3a1..8949b97be6 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -54,6 +54,9 @@ CCriticalSection cs_mapRequestCount;
 map<string, string> mapAddressBook;
 CCriticalSection cs_mapAddressBook;
 
+set<int64> setKeyPool;
+CCriticalSection cs_setKeyPool;
+
 vector<unsigned char> vchDefaultKey;
 
 double dHashesPerSec;
@@ -81,160 +84,6 @@ int fUseUPnP = false;
 
 //////////////////////////////////////////////////////////////////////////////
 //
-// 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");
-    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;
-            }
-            fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
-        }
-
-        //// debug print
-        printf("AddToWallet %s  %s%s\n", wtxIn.GetHash().ToString().substr(0,10).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);
-        BOOST_FOREACH(const CTxOut& txout, wtx.vout)
-        {
-            if (txout.scriptPubKey == scriptDefaultKey)
-            {
-                CWalletDB walletdb;
-                vchDefaultKey = GetKeyFromKeyPool();
-                walletdb.WriteDefaultKey(vchDefaultKey);
-                walletdb.WriteName(PubKeyToAddress(vchDefaultKey), "");
-            }
-        }
-
-        // Notify UI
-        vWalletUpdated.push_back(hash);
-    }
-
-    // Refresh UI
-    MainFrameRepaint();
-    return true;
-}
-
-bool AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate = false)
-{
-    uint256 hash = tx.GetHash();
-    bool fExisted = mapWallet.count(hash);
-    if (fExisted && !fUpdate) return false;
-    if (fExisted || tx.IsMine() || tx.IsFromMe())
-    {
-        CWalletTx wtx(tx);
-        // Get merkle branch if transaction was found in a block
-        if (pblock)
-            wtx.SetMerkleBranch(pblock);
-        return AddToWallet(wtx);
-    }
-    return false;
-}
-
-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.IsSpent(prevout.n) && wtx.vout[prevout.n].IsMine())
-            {
-                printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
-                wtx.MarkSpent(prevout.n);
-                wtx.WriteToDisk();
-                vWalletUpdated.push_back(prevout.hash);
-            }
-        }
-    }
-}
-
-
-
-
-
-
-
-
-//////////////////////////////////////////////////////////////////////////////
-//
 // mapOrphanTransactions
 //
 
@@ -312,190 +161,6 @@ bool CTransaction::ReadFromDisk(COutPoint prevout)
     return ReadFromDisk(txdb, prevout, txindex);
 }
 
-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;
-}
-
-void CWalletTx::GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, list<pair<string, int64> >& listReceived,
-                           list<pair<string, int64> >& listSent, int64& nFee, string& strSentAccount) const
-{
-    nGeneratedImmature = nGeneratedMature = nFee = 0;
-    listReceived.clear();
-    listSent.clear();
-    strSentAccount = strFromAccount;
-
-    if (IsCoinBase())
-    {
-        if (GetBlocksToMaturity() > 0)
-            nGeneratedImmature = CTransaction::GetCredit();
-        else
-            nGeneratedMature = GetCredit();
-        return;
-    }
-
-    // Compute fee:
-    int64 nDebit = GetDebit();
-    if (nDebit > 0) // debit>0 means we signed/sent this transaction
-    {
-        int64 nValueOut = GetValueOut();
-        nFee = nDebit - nValueOut;
-    }
-
-    // Sent/received.  Standard client will never generate a send-to-multiple-recipients,
-    // but non-standard clients might (so return a list of address/amount pairs)
-    BOOST_FOREACH(const CTxOut& txout, vout)
-    {
-        string address;
-        uint160 hash160;
-        vector<unsigned char> vchPubKey;
-        if (ExtractHash160(txout.scriptPubKey, hash160))
-            address = Hash160ToAddress(hash160);
-        else if (ExtractPubKey(txout.scriptPubKey, false, vchPubKey))
-            address = PubKeyToAddress(vchPubKey);
-        else
-        {
-            printf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
-                   this->GetHash().ToString().c_str());
-            address = " unknown ";
-        }
-
-        // Don't report 'change' txouts
-        if (nDebit > 0 && txout.IsChange())
-            continue;
-
-        if (nDebit > 0)
-            listSent.push_back(make_pair(address, txout.nValue));
-
-        if (txout.IsMine())
-            listReceived.push_back(make_pair(address, txout.nValue));
-    }
-
-}
-
-void CWalletTx::GetAccountAmounts(const string& strAccount, int64& nGenerated, int64& nReceived, 
-                                  int64& nSent, int64& nFee) const
-{
-    nGenerated = nReceived = nSent = nFee = 0;
-
-    int64 allGeneratedImmature, allGeneratedMature, allFee;
-    allGeneratedImmature = allGeneratedMature = allFee = 0;
-    string strSentAccount;
-    list<pair<string, int64> > listReceived;
-    list<pair<string, int64> > listSent;
-    GetAmounts(allGeneratedImmature, allGeneratedMature, listReceived, listSent, allFee, strSentAccount);
-
-    if (strAccount == "")
-        nGenerated = allGeneratedMature;
-    if (strAccount == strSentAccount)
-    {
-        BOOST_FOREACH(const PAIRTYPE(string,int64)& s, listSent)
-            nSent += s.second;
-        nFee = allFee;
-    }
-    CRITICAL_BLOCK(cs_mapAddressBook)
-    {
-        BOOST_FOREACH(const PAIRTYPE(string,int64)& r, listReceived)
-        {
-            if (mapAddressBook.count(r.first))
-            {
-                if (mapAddressBook[r.first] == strAccount)
-                {
-                    nReceived += r.second;
-                }
-            }
-            else if (strAccount.empty())
-            {
-                nReceived += r.second;
-            }
-        }
-    }
-}
-
 
 
 int CMerkleTx::SetMerkleBranch(const CBlock* pblock)
@@ -551,69 +216,6 @@ int CMerkleTx::SetMerkleBranch(const CBlock* pblock)
 
 
 
-void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
-{
-    vtxPrev.clear();
-
-    const int COPY_DEPTH = 3;
-    if (SetMerkleBranch() < COPY_DEPTH)
-    {
-        vector<uint256> vWorkQueue;
-        BOOST_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];
-                    BOOST_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)
-                    BOOST_FOREACH(const CTxIn& txin, tx.vin)
-                        vWorkQueue.push_back(txin.prevout.hash);
-            }
-        }
-    }
-
-    reverse(vtxPrev.begin(), vtxPrev.end());
-}
-
-
-
-
-
-
-
 
 
 
@@ -784,6 +386,11 @@ bool CTransaction::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs, bool* pfMi
     return true;
 }
 
+bool CTransaction::AcceptToMemoryPool(bool fCheckInputs, bool* pfMissingInputs)
+{
+    CTxDB txdb("r");
+    return AcceptToMemoryPool(txdb, fCheckInputs, pfMissingInputs);
+}
 
 bool CTransaction::AddToMemoryPoolUnchecked()
 {
@@ -867,6 +474,12 @@ bool CMerkleTx::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs)
     }
 }
 
+bool CMerkleTx::AcceptToMemoryPool()
+{
+    CTxDB txdb("r");
+    return AcceptToMemoryPool(txdb);
+}
+
 
 
 bool CWalletTx::AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs)
@@ -888,148 +501,10 @@ bool CWalletTx::AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs)
     return false;
 }
 
-int ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
-{
-    int ret = 0;
-
-    CBlockIndex* pindex = pindexStart;
-    CRITICAL_BLOCK(cs_mapWallet)
-    {
-        while (pindex)
-        {
-            CBlock block;
-            block.ReadFromDisk(pindex, true);
-            BOOST_FOREACH(CTransaction& tx, block.vtx)
-            {
-                if (AddToWalletIfInvolvingMe(tx, &block, fUpdate))
-                    ret++;
-            }
-            pindex = pindex->pnext;
-        }
-    }
-    return ret;
-}
-
-void ReacceptWalletTransactions()
+bool CWalletTx::AcceptWalletTransaction() 
 {
     CTxDB txdb("r");
-    bool fRepeat = true;
-    while (fRepeat) CRITICAL_BLOCK(cs_mapWallet)
-    {
-        fRepeat = false;
-        vector<CDiskTxPos> vMissingTx;
-        BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
-        {
-            CWalletTx& wtx = item.second;
-            if (wtx.IsCoinBase() && wtx.IsSpent(0))
-                continue;
-
-            CTxIndex txindex;
-            bool fUpdated = false;
-            if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
-            {
-                // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
-                if (txindex.vSpent.size() != wtx.vout.size())
-                {
-                    printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %d != wtx.vout.size() %d\n", txindex.vSpent.size(), wtx.vout.size());
-                    continue;
-                }
-                for (int i = 0; i < txindex.vSpent.size(); i++)
-                {
-                    if (wtx.IsSpent(i))
-                        continue;
-                    if (!txindex.vSpent[i].IsNull() && wtx.vout[i].IsMine())
-                    {
-                        wtx.MarkSpent(i);
-                        fUpdated = true;
-                        vMissingTx.push_back(txindex.vSpent[i]);
-                    }
-                }
-                if (fUpdated)
-                {
-                    printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
-                    wtx.MarkDirty();
-                    wtx.WriteToDisk();
-                }
-            }
-            else
-            {
-                // Reaccept any txes of ours that aren't already in a block
-                if (!wtx.IsCoinBase())
-                    wtx.AcceptWalletTransaction(txdb, false);
-            }
-        }
-        if (!vMissingTx.empty())
-        {
-            // TODO: optimize this to scan just part of the block chain?
-            if (ScanForWalletTransactions(pindexGenesisBlock))
-                fRepeat = true;  // Found missing transactions: re-do Reaccept.
-        }
-    }
-}
-
-
-void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
-{
-    BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
-    {
-        if (!tx.IsCoinBase())
-        {
-            uint256 hash = tx.GetHash();
-            if (!txdb.ContainsTx(hash))
-                RelayMessage(CInv(MSG_TX, hash), (CTransaction)tx);
-        }
-    }
-    if (!IsCoinBase())
-    {
-        uint256 hash = GetHash();
-        if (!txdb.ContainsTx(hash))
-        {
-            printf("Relaying wtx %s\n", hash.ToString().substr(0,10).c_str());
-            RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
-        }
-    }
-}
-
-void ResendWalletTransactions()
-{
-    // Do this infrequently and randomly to avoid giving away
-    // that these are our transactions.
-    static int64 nNextTime;
-    if (GetTime() < nNextTime)
-        return;
-    bool fFirst = (nNextTime == 0);
-    nNextTime = GetTime() + GetRand(30 * 60);
-    if (fFirst)
-        return;
-
-    // Only do it if there's been a new block since last time
-    static int64 nLastTime;
-    if (nTimeBestReceived < nLastTime)
-        return;
-    nLastTime = GetTime();
-
-    // Rebroadcast any of our txes that aren't in a block yet
-    printf("ResendWalletTransactions()\n");
-    CTxDB txdb("r");
-    CRITICAL_BLOCK(cs_mapWallet)
-    {
-        // Sort them in chronological order
-        multimap<unsigned int, CWalletTx*> mapSorted;
-        BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
-        {
-            CWalletTx& wtx = item.second;
-            // Don't rebroadcast until it's had plenty of time that
-            // it should have gotten in already by now.
-            if (nTimeBestReceived - (int64)wtx.nTimeReceived > 5 * 60)
-                mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
-        }
-        BOOST_FOREACH(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
-        {
-            CWalletTx& wtx = *item.second;
-            wtx.RelayWalletTransaction(txdb);
-        }
-    }
+    return AcceptWalletTransaction(txdb);
 }
 
 int CTxIndex::GetDepthInMainChain() const
@@ -1076,6 +551,7 @@ bool CBlock::ReadFromDisk(const CBlockIndex* pindex, bool fReadTransactions)
     return true;
 }
 
+
 uint256 GetOrphanRoot(const CBlock* pblock)
 {
     // Work back to the first block in the orphan chain
@@ -2221,127 +1697,6 @@ bool AlreadyHave(CTxDB& txdb, const CInv& inv)
 char pchMessageStart[4] = { 0xf9, 0xbe, 0xb4, 0xd9 };
 
 
-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
-            vRecv.insert(vRecv.begin(), vHeaderSave.begin(), vHeaderSave.end());
-            break;
-        }
-
-        // Checksum
-        if (vRecv.GetVersion() >= 209)
-        {
-            uint256 hash = Hash(vRecv.begin(), vRecv.begin() + nMessageSize);
-            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;
-            }
-        }
-
-        // Copy message to its own buffer
-        CDataStream vMsg(vRecv.begin(), vRecv.begin() + nMessageSize, vRecv.nType, vRecv.nVersion);
-        vRecv.ignore(nMessageSize);
-
-        // 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
-            {
-                PrintExceptionContinue(&e, "ProcessMessage()");
-            }
-        }
-        catch (std::exception& e) {
-            PrintExceptionContinue(&e, "ProcessMessage()");
-        } catch (...) {
-            PrintExceptionContinue(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;
@@ -2885,9 +2240,123 @@ bool ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
 }
 
 
+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
+            vRecv.insert(vRecv.begin(), vHeaderSave.begin(), vHeaderSave.end());
+            break;
+        }
+
+        // Checksum
+        if (vRecv.GetVersion() >= 209)
+        {
+            uint256 hash = Hash(vRecv.begin(), vRecv.begin() + nMessageSize);
+            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;
+            }
+        }
+
+        // Copy message to its own buffer
+        CDataStream vMsg(vRecv.begin(), vRecv.begin() + nMessageSize, vRecv.nType, vRecv.nVersion);
+        vRecv.ignore(nMessageSize);
+
+        // 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
+            {
+                PrintExceptionContinue(&e, "ProcessMessage()");
+            }
+        }
+        catch (std::exception& e) {
+            PrintExceptionContinue(&e, "ProcessMessage()");
+        } catch (...) {
+            PrintExceptionContinue(NULL, "ProcessMessage()");
+        }
+
+        if (!fRet)
+            printf("ProcessMessage(%s, %u bytes) FAILED\n", strCommand.c_str(), nMessageSize);
+    }
+
+    vRecv.Compact();
+    return true;
+}
 
 
 
@@ -3096,56 +2565,6 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
 // 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(boost::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;
@@ -3473,7 +2892,6 @@ bool CheckWork(CBlock* pblock, CReserveKey& reservekey)
     return true;
 }
 
-
 void BitcoinMiner()
 {
     printf("BitcoinMiner started\n");
@@ -3617,421 +3035,52 @@ void BitcoinMiner()
     }
 }
 
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-//////////////////////////////////////////////////////////////////////////////
-//
-// Actions
-//
-
-
-int64 GetBalance()
-{
-    int64 nStart = GetTimeMillis();
-
-    int64 nTotal = 0;
-    CRITICAL_BLOCK(cs_mapWallet)
-    {
-        for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
-        {
-            CWalletTx* pcoin = &(*it).second;
-            if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
-                continue;
-            nTotal += pcoin->GetAvailableCredit();
-        }
-    }
-
-    //printf("GetBalance() %"PRI64d"ms\n", GetTimeMillis() - nStart);
-    return nTotal;
-}
-
-
-bool SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<pair<CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet)
+void ThreadBitcoinMiner(void* parg)
 {
-    setCoinsRet.clear();
-    nValueRet = 0;
-
-    // List of values less than target
-    pair<int64, pair<CWalletTx*,unsigned int> > coinLowestLarger;
-    coinLowestLarger.first = INT64_MAX;
-    coinLowestLarger.second.first = NULL;
-    vector<pair<int64, pair<CWalletTx*,unsigned int> > > vValue;
-    int64 nTotalLower = 0;
-
-    CRITICAL_BLOCK(cs_mapWallet)
-    {
-       vector<CWalletTx*> vCoins;
-       vCoins.reserve(mapWallet.size());
-       for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
-           vCoins.push_back(&(*it).second);
-       random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
-
-       BOOST_FOREACH(CWalletTx* pcoin, vCoins)
-       {
-            if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
-                continue;
-
-            if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
-                continue;
-
-            int nDepth = pcoin->GetDepthInMainChain();
-            if (nDepth < (pcoin->IsFromMe() ? nConfMine : nConfTheirs))
-                continue;
-
-            for (int i = 0; i < pcoin->vout.size(); i++)
-            {
-                if (pcoin->IsSpent(i) || !pcoin->vout[i].IsMine())
-                    continue;
-
-                int64 n = pcoin->vout[i].nValue;
-
-                if (n <= 0)
-                    continue;
-
-                pair<int64,pair<CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin,i));
-
-                if (n == nTargetValue)
-                {
-                    setCoinsRet.insert(coin.second);
-                    nValueRet += coin.first;
-                    return true;
-                }
-                else if (n < nTargetValue + CENT)
-                {
-                    vValue.push_back(coin);
-                    nTotalLower += n;
-                }
-                else if (n < coinLowestLarger.first)
-                {
-                    coinLowestLarger = coin;
-                }
-            }
-        }
-    }
-
-    if (nTotalLower == nTargetValue || nTotalLower == nTargetValue + CENT)
-    {
-        for (int i = 0; i < vValue.size(); ++i)
-        {
-            setCoinsRet.insert(vValue[i].second);
-            nValueRet += vValue[i].first;
-        }
-        return true;
-    }
-
-    if (nTotalLower < nTargetValue + (coinLowestLarger.second.first ? CENT : 0))
-    {
-        if (coinLowestLarger.second.first == NULL)
-            return false;
-        setCoinsRet.insert(coinLowestLarger.second);
-        nValueRet += coinLowestLarger.first;
-        return true;
-    }
-
-    if (nTotalLower >= nTargetValue + CENT)
-        nTargetValue += CENT;
-
-    // Solve subset sum by stochastic approximation
-    sort(vValue.rbegin(), vValue.rend());
-    vector<char> vfIncluded;
-    vector<char> vfBest(vValue.size(), true);
-    int64 nBest = nTotalLower;
-
-    for (int nRep = 0; nRep < 1000 && nBest != nTargetValue; nRep++)
-    {
-        vfIncluded.assign(vValue.size(), false);
-        int64 nTotal = 0;
-        bool fReachedTarget = false;
-        for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
-        {
-            for (int i = 0; i < vValue.size(); i++)
-            {
-                if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
-                {
-                    nTotal += vValue[i].first;
-                    vfIncluded[i] = true;
-                    if (nTotal >= nTargetValue)
-                    {
-                        fReachedTarget = true;
-                        if (nTotal < nBest)
-                        {
-                            nBest = nTotal;
-                            vfBest = vfIncluded;
-                        }
-                        nTotal -= vValue[i].first;
-                        vfIncluded[i] = false;
-                    }
-                }
-            }
-        }
-    }
-
-    // If the next larger is still closer, return it
-    if (coinLowestLarger.second.first && coinLowestLarger.first - nTargetValue <= nBest - nTargetValue)
+    try
     {
-        setCoinsRet.insert(coinLowestLarger.second);
-        nValueRet += coinLowestLarger.first;
+        vnThreadsRunning[3]++;
+        BitcoinMiner();
+        vnThreadsRunning[3]--;
     }
-    else {
-        for (int i = 0; i < vValue.size(); i++)
-            if (vfBest[i])
-            {
-                setCoinsRet.insert(vValue[i].second);
-                nValueRet += vValue[i].first;
-            }
-
-        //// debug print
-        printf("SelectCoins() best subset: ");
-        for (int i = 0; i < vValue.size(); i++)
-            if (vfBest[i])
-                printf("%s ", FormatMoney(vValue[i].first).c_str());
-        printf("total %s\n", FormatMoney(nBest).c_str());
+    catch (std::exception& e) {
+        vnThreadsRunning[3]--;
+        PrintException(&e, "ThreadBitcoinMiner()");
+    } catch (...) {
+        vnThreadsRunning[3]--;
+        PrintException(NULL, "ThreadBitcoinMiner()");
     }
-
-    return true;
-}
-
-bool SelectCoins(int64 nTargetValue, set<pair<CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet)
-{
-    return (SelectCoinsMinConf(nTargetValue, 1, 6, setCoinsRet, nValueRet) ||
-            SelectCoinsMinConf(nTargetValue, 1, 1, setCoinsRet, nValueRet) ||
-            SelectCoinsMinConf(nTargetValue, 0, 1, setCoinsRet, nValueRet));
+    UIThreadCall(boost::bind(CalledSetStatusBar, "", 0));
+    nHPSTimerStart = 0;
+    if (vnThreadsRunning[3] == 0)
+        dHashesPerSec = 0;
+    printf("ThreadBitcoinMiner exiting, %d threads remaining\n", vnThreadsRunning[3]);
 }
 
 
-
-
-bool CreateTransaction(const vector<pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
+void GenerateBitcoins(bool fGenerate)
 {
-    int64 nValue = 0;
-    BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
-    {
-        if (nValue < 0)
-            return false;
-        nValue += s.second;
-    }
-    if (vecSend.empty() || nValue < 0)
-        return false;
-
-    CRITICAL_BLOCK(cs_main)
+    if (fGenerateBitcoins != fGenerate)
     {
-        // txdb must be opened before the mapWallet lock
-        CTxDB txdb("r");
-        CRITICAL_BLOCK(cs_mapWallet)
-        {
-            nFeeRet = nTransactionFee;
-            loop
-            {
-                wtxNew.vin.clear();
-                wtxNew.vout.clear();
-                wtxNew.fFromMe = true;
-
-                int64 nTotalValue = nValue + nFeeRet;
-                double dPriority = 0;
-                // vouts to the payees
-                BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
-                    wtxNew.vout.push_back(CTxOut(s.second, s.first));
-
-                // Choose coins to use
-                set<pair<CWalletTx*,unsigned int> > setCoins;
-                int64 nValueIn = 0;
-                if (!SelectCoins(nTotalValue, setCoins, nValueIn))
-                    return false;
-                BOOST_FOREACH(PAIRTYPE(CWalletTx*, unsigned int) pcoin, setCoins)
-                {
-                    int64 nCredit = pcoin.first->vout[pcoin.second].nValue;
-                    dPriority += (double)nCredit * pcoin.first->GetDepthInMainChain();
-                }
-
-                int64 nChange = nValueIn - nValue - nFeeRet;
-
-                // if sub-cent change is required, the fee must be raised to at least MIN_TX_FEE
-                // or until nChange becomes zero
-                if (nFeeRet < MIN_TX_FEE && nChange > 0 && nChange < CENT)
-                {
-                    int64 nMoveToFee = min(nChange, MIN_TX_FEE - nFeeRet);
-                    nChange -= nMoveToFee;
-                    nFeeRet += nMoveToFee;
-                }
-
-                if (nChange > 0)
-                {
-                    // Note: We use a new key here to keep it from being obvious which side is the change.
-                    //  The drawback is that by not reusing a previous key, the change may be lost if a
-                    //  backup is restored, if the backup doesn't have the new private key for the change.
-                    //  If we reused the old key, it would be possible to add code to look for and
-                    //  rediscover unknown transactions that were written with keys of ours to recover
-                    //  post-backup change.
-
-                    // Reserve a new key pair from key pool
-                    vector<unsigned char> vchPubKey = reservekey.GetReservedKey();
-                    assert(mapKeys.count(vchPubKey));
-
-                    // Fill a vout to ourself, using same address type as the payment
-                    CScript scriptChange;
-                    if (vecSend[0].first.GetBitcoinAddressHash160() != 0)
-                        scriptChange.SetBitcoinAddress(vchPubKey);
-                    else
-                        scriptChange << vchPubKey << OP_CHECKSIG;
-
-                    // Insert change txn at random position:
-                    vector<CTxOut>::iterator position = wtxNew.vout.begin()+GetRandInt(wtxNew.vout.size());
-                    wtxNew.vout.insert(position, CTxOut(nChange, scriptChange));
-                }
-                else
-                    reservekey.ReturnKey();
-
-                // Fill vin
-                BOOST_FOREACH(const PAIRTYPE(CWalletTx*,unsigned int)& coin, setCoins)
-                    wtxNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second));
-
-                // Sign
-                int nIn = 0;
-                BOOST_FOREACH(const PAIRTYPE(CWalletTx*,unsigned int)& coin, setCoins)
-                    if (!SignSignature(*coin.first, wtxNew, nIn++))
-                        return false;
-
-                // Limit size
-                unsigned int nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK);
-                if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
-                    return false;
-                dPriority /= nBytes;
-
-                // Check that enough fee is included
-                int64 nPayFee = nTransactionFee * (1 + (int64)nBytes / 1000);
-                bool fAllowFree = CTransaction::AllowFree(dPriority);
-                int64 nMinFee = wtxNew.GetMinFee(1, fAllowFree);
-                if (nFeeRet < max(nPayFee, nMinFee))
-                {
-                    nFeeRet = max(nPayFee, nMinFee);
-                    continue;
-                }
-
-                // Fill vtxPrev by copying from previous transactions vtxPrev
-                wtxNew.AddSupportingTransactions(txdb);
-                wtxNew.fTimeReceivedIsTxTime = true;
-
-                break;
-            }
-        }
+        fGenerateBitcoins = fGenerate;
+        CWalletDB().WriteSetting("fGenerateBitcoins", fGenerateBitcoins);
+        MainFrameRepaint();
     }
-    return true;
-}
-
-bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
-{
-    vector< pair<CScript, int64> > vecSend;
-    vecSend.push_back(make_pair(scriptPubKey, nValue));
-    return CreateTransaction(vecSend, wtxNew, reservekey, nFeeRet);
-}
-
-// Call after CreateTransaction unless you want to abort
-bool CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
-{
-    CRITICAL_BLOCK(cs_main)
+    if (fGenerateBitcoins)
     {
-        printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
-        CRITICAL_BLOCK(cs_mapWallet)
-        {
-            // This is only to keep the database open to defeat the auto-flush for the
-            // duration of this scope.  This is the only place where this optimization
-            // maybe makes sense; please don't do it anywhere else.
-            CWalletDB walletdb("r");
-
-            // Take key pair from key pool so it won't be used again
-            reservekey.KeepKey();
-
-            // Add tx to wallet, because if it has change it's also ours,
-            // otherwise just for transaction history.
-            AddToWallet(wtxNew);
-
-            // Mark old coins as spent
-            set<CWalletTx*> setCoins;
-            BOOST_FOREACH(const CTxIn& txin, wtxNew.vin)
-            {
-                CWalletTx &pcoin = mapWallet[txin.prevout.hash];
-                pcoin.MarkSpent(txin.prevout.n);
-                pcoin.WriteToDisk();
-                vWalletUpdated.push_back(pcoin.GetHash());
-            }
-        }
-
-        // Track how many getdata requests our transaction gets
-        CRITICAL_BLOCK(cs_mapRequestCount)
-            mapRequestCount[wtxNew.GetHash()] = 0;
-
-        // Broadcast
-        if (!wtxNew.AcceptToMemoryPool())
+        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++)
         {
-            // This must not fail. The transaction has already been signed and recorded.
-            printf("CommitTransaction() : Error: Transaction not valid");
-            return false;
+            if (!CreateThread(ThreadBitcoinMiner, NULL))
+                printf("Error: CreateThread(ThreadBitcoinMiner) failed\n");
+            Sleep(10);
         }
-        wtxNew.RelayWalletTransaction();
     }
-    MainFrameRepaint();
-    return true;
-}
-
-
-
-
-// requires cs_main lock
-string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
-{
-    CReserveKey reservekey;
-    int64 nFeeRequired;
-    if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired))
-    {
-        string strError;
-        if (nValue + nFeeRequired > GetBalance())
-            strError = strprintf(_("Error: This transaction requires a transaction fee of at least %s because of its amount, complexity, or use of recently received funds  "), FormatMoney(nFeeRequired).c_str());
-        else
-            strError = _("Error: Transaction creation failed  ");
-        printf("SendMoney() : %s", strError.c_str());
-        return strError;
-    }
-
-    if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL))
-        return "ABORTED";
-
-    if (!CommitTransaction(wtxNew, reservekey))
-        return _("Error: The transaction was rejected.  This might happen if some of the coins in your wallet were already spent, such as if you used a copy of wallet.dat and coins were spent in the copy but not marked as spent here.");
-
-    MainFrameRepaint();
-    return "";
-}
-
-
-
-// requires cs_main lock
-string SendMoneyToBitcoinAddress(string strAddress, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
-{
-    // Check amount
-    if (nValue <= 0)
-        return _("Invalid amount");
-    if (nValue + nTransactionFee > GetBalance())
-        return _("Insufficient funds");
-
-    // Parse bitcoin address
-    CScript scriptPubKey;
-    if (!scriptPubKey.SetBitcoinAddress(strAddress))
-        return _("Invalid bitcoin address");
-
-    return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
 }
diff --git a/src/main.h b/src/main.h
index 7aa6d41c30..2ebb8b867e 100644
--- a/src/main.h
+++ b/src/main.h
@@ -7,7 +7,6 @@
 #include "bignum.h"
 #include "net.h"
 #include "key.h"
-#include "db.h"
 #include "script.h"
 
 #include <list>
@@ -22,6 +21,7 @@ class CTransaction;
 class CBlock;
 class CBlockIndex;
 class CWalletTx;
+class CWallet;
 class CKeyItem;
 
 class CMessageHeader;
@@ -62,14 +62,15 @@ extern CBigNum bnBestChainWork;
 extern CBigNum bnBestInvalidWork;
 extern uint256 hashBestChain;
 extern CBlockIndex* pindexBest;
+extern std::set<int64> setKeyPool;
+extern CCriticalSection cs_setKeyPool;
 extern unsigned int nTransactionsUpdated;
-extern std::map<uint256, int> mapRequestCount;
-extern CCriticalSection cs_mapRequestCount;
-extern std::map<std::string, std::string> mapAddressBook;
-extern CCriticalSection cs_mapAddressBook;
-extern std::vector<unsigned char> vchDefaultKey;
 extern double dHashesPerSec;
 extern int64 nHPSTimerStart;
+extern int64 nTimeBestReceived;
+extern std::map<std::string, std::string> mapAddressBook;
+extern CCriticalSection cs_mapAddressBook;
+
 
 // Settings
 extern int fGenerateBitcoins;
@@ -92,24 +93,11 @@ class CTxIndex;
 bool CheckDiskSpace(uint64 nAdditionalBytes=0);
 FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode="rb");
 FILE* AppendBlockFile(unsigned int& nFileRet);
-bool AddKey(const CKey& key);
-std::vector<unsigned char> GenerateNewKey();
-bool AddToWallet(const CWalletTx& wtxIn);
-void WalletUpdateSpent(const COutPoint& prevout);
-int ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate = false);
-void ReacceptWalletTransactions();
 bool LoadBlockIndex(bool fAllowNew=true);
 void PrintBlockTree();
 bool ProcessMessages(CNode* pfrom);
 bool ProcessMessage(CNode* pfrom, std::string strCommand, CDataStream& vRecv);
 bool SendMessages(CNode* pto, bool fSendTrickle);
-int64 GetBalance();
-bool CreateTransaction(const std::vector<std::pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet);
-bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet);
-bool CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey);
-bool BroadcastTransaction(CWalletTx& wtxNew);
-std::string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
-std::string SendMoneyToBitcoinAddress(std::string strAddress, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
 void GenerateBitcoins(bool fGenerate);
 void ThreadBitcoinMiner(void* parg);
 CBlock* CreateNewBlock(CReserveKey& reservekey);
@@ -721,11 +709,7 @@ public:
     bool ClientConnectInputs();
     bool CheckTransaction() const;
     bool AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs=true, bool* pfMissingInputs=NULL);
-    bool AcceptToMemoryPool(bool fCheckInputs=true, bool* pfMissingInputs=NULL)
-    {
-        CTxDB txdb("r");
-        return AcceptToMemoryPool(txdb, fCheckInputs, pfMissingInputs);
-    }
+    bool AcceptToMemoryPool(bool fCheckInputs=true, bool* pfMissingInputs=NULL);
 protected:
     bool AddToMemoryPoolUnchecked();
 public:
@@ -784,307 +768,7 @@ public:
     bool IsInMainChain() const { return GetDepthInMainChain() > 0; }
     int GetBlocksToMaturity() const;
     bool AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs=true);
-    bool AcceptToMemoryPool() { CTxDB txdb("r"); return AcceptToMemoryPool(txdb); }
-};
-
-
-
-
-//
-// A transaction with a bunch of additional info that only the owner cares
-// about.  It includes any unrecorded transactions needed to link it back
-// to the block chain.
-//
-class CWalletTx : public CMerkleTx
-{
-public:
-    std::vector<CMerkleTx> vtxPrev;
-    std::map<std::string, std::string> mapValue;
-    std::vector<std::pair<std::string, std::string> > vOrderForm;
-    unsigned int fTimeReceivedIsTxTime;
-    unsigned int nTimeReceived;  // time received by this node
-    char fFromMe;
-    std::string strFromAccount;
-    std::vector<char> vfSpent;
-
-    // memory only
-    mutable char fDebitCached;
-    mutable char fCreditCached;
-    mutable char fAvailableCreditCached;
-    mutable char fChangeCached;
-    mutable int64 nDebitCached;
-    mutable int64 nCreditCached;
-    mutable int64 nAvailableCreditCached;
-    mutable int64 nChangeCached;
-
-    // memory only UI hints
-    mutable unsigned int nTimeDisplayed;
-    mutable int nLinesDisplayed;
-    mutable char fConfirmedDisplayed;
-
-
-    CWalletTx()
-    {
-        Init();
-    }
-
-    CWalletTx(const CMerkleTx& txIn) : CMerkleTx(txIn)
-    {
-        Init();
-    }
-
-    CWalletTx(const CTransaction& txIn) : CMerkleTx(txIn)
-    {
-        Init();
-    }
-
-    void Init()
-    {
-        vtxPrev.clear();
-        mapValue.clear();
-        vOrderForm.clear();
-        fTimeReceivedIsTxTime = false;
-        nTimeReceived = 0;
-        fFromMe = false;
-        strFromAccount.clear();
-        vfSpent.clear();
-        fDebitCached = false;
-        fCreditCached = false;
-        fAvailableCreditCached = false;
-        fChangeCached = false;
-        nDebitCached = 0;
-        nCreditCached = 0;
-        nAvailableCreditCached = 0;
-        nChangeCached = 0;
-        nTimeDisplayed = 0;
-        nLinesDisplayed = 0;
-        fConfirmedDisplayed = false;
-    }
-
-    IMPLEMENT_SERIALIZE
-    (
-        CWalletTx* pthis = const_cast<CWalletTx*>(this);
-        if (fRead)
-            pthis->Init();
-        char fSpent = false;
-
-        if (!fRead)
-        {
-            pthis->mapValue["fromaccount"] = pthis->strFromAccount;
-
-            std::string str;
-            BOOST_FOREACH(char f, vfSpent)
-            {
-                str += (f ? '1' : '0');
-                if (f)
-                    fSpent = true;
-            }
-            pthis->mapValue["spent"] = str;
-        }
-
-        nSerSize += SerReadWrite(s, *(CMerkleTx*)this, nType, nVersion,ser_action);
-        READWRITE(vtxPrev);
-        READWRITE(mapValue);
-        READWRITE(vOrderForm);
-        READWRITE(fTimeReceivedIsTxTime);
-        READWRITE(nTimeReceived);
-        READWRITE(fFromMe);
-        READWRITE(fSpent);
-
-        if (fRead)
-        {
-            pthis->strFromAccount = pthis->mapValue["fromaccount"];
-
-            if (mapValue.count("spent"))
-                BOOST_FOREACH(char c, pthis->mapValue["spent"])
-                    pthis->vfSpent.push_back(c != '0');
-            else
-                pthis->vfSpent.assign(vout.size(), fSpent);
-        }
-
-        pthis->mapValue.erase("fromaccount");
-        pthis->mapValue.erase("version");
-        pthis->mapValue.erase("spent");
-    )
-
-    // marks certain txout's as spent
-    // returns true if any update took place
-    bool UpdateSpent(const std::vector<char>& vfNewSpent)
-    {
-        bool fReturn = false;
-        for (int i=0; i < vfNewSpent.size(); i++)
-        {
-            if (i == vfSpent.size())
-                break;
-
-            if (vfNewSpent[i] && !vfSpent[i])
-            {
-                vfSpent[i] = true;
-                fReturn = true;
-                fAvailableCreditCached = false;
-            }
-        }
-        return fReturn;
-    }
-
-    void MarkDirty()
-    {
-        fCreditCached = false;
-        fAvailableCreditCached = false;
-        fDebitCached = false;
-        fChangeCached = false;
-    }
-
-    void MarkSpent(unsigned int nOut)
-    {
-        if (nOut >= vout.size())
-            throw std::runtime_error("CWalletTx::MarkSpent() : nOut out of range");
-        vfSpent.resize(vout.size());
-        if (!vfSpent[nOut])
-        {
-            vfSpent[nOut] = true;
-            fAvailableCreditCached = false;
-        }
-    }
-
-    bool IsSpent(unsigned int nOut) const
-    {
-        if (nOut >= vout.size())
-            throw std::runtime_error("CWalletTx::IsSpent() : nOut out of range");
-        if (nOut >= vfSpent.size())
-            return false;
-        return (!!vfSpent[nOut]);
-    }
-
-    int64 GetDebit() const
-    {
-        if (vin.empty())
-            return 0;
-        if (fDebitCached)
-            return nDebitCached;
-        nDebitCached = CTransaction::GetDebit();
-        fDebitCached = true;
-        return nDebitCached;
-    }
-
-    int64 GetCredit(bool fUseCache=true) const
-    {
-        // Must wait until coinbase is safely deep enough in the chain before valuing it
-        if (IsCoinBase() && GetBlocksToMaturity() > 0)
-            return 0;
-
-        // GetBalance can assume transactions in mapWallet won't change
-        if (fUseCache && fCreditCached)
-            return nCreditCached;
-        nCreditCached = CTransaction::GetCredit();
-        fCreditCached = true;
-        return nCreditCached;
-    }
-
-    int64 GetAvailableCredit(bool fUseCache=true) const
-    {
-        // Must wait until coinbase is safely deep enough in the chain before valuing it
-        if (IsCoinBase() && GetBlocksToMaturity() > 0)
-            return 0;
-
-        if (fUseCache && fAvailableCreditCached)
-            return nAvailableCreditCached;
-
-        int64 nCredit = 0;
-        for (int i = 0; i < vout.size(); i++)
-        {
-            if (!IsSpent(i))
-            {
-                const CTxOut &txout = vout[i];
-                nCredit += txout.GetCredit();
-                if (!MoneyRange(nCredit))
-                    throw std::runtime_error("CWalletTx::GetAvailableCredit() : value out of range");
-            }
-        }
-
-        nAvailableCreditCached = nCredit;
-        fAvailableCreditCached = true;
-        return nCredit;
-    }
-
-
-    int64 GetChange() const
-    {
-        if (fChangeCached)
-            return nChangeCached;
-        nChangeCached = CTransaction::GetChange();
-        fChangeCached = true;
-        return nChangeCached;
-    }
-
-    void GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, std::list<std::pair<std::string /* address */, int64> >& listReceived,
-                    std::list<std::pair<std::string /* address */, int64> >& listSent, int64& nFee, std::string& strSentAccount) const;
-
-    void GetAccountAmounts(const std::string& strAccount, int64& nGenerated, int64& nReceived,
-                           int64& nSent, int64& nFee) const;
-
-    bool IsFromMe() const
-    {
-        return (GetDebit() > 0);
-    }
-
-    bool IsConfirmed() const
-    {
-        // Quick answer in most cases
-        if (!IsFinal())
-            return false;
-        if (GetDepthInMainChain() >= 1)
-            return true;
-        if (!IsFromMe()) // using wtx's cached debit
-            return false;
-
-        // If no confirmations but it's from us, we can still
-        // consider it confirmed if all dependencies are confirmed
-        std::map<uint256, const CMerkleTx*> mapPrev;
-        std::vector<const CMerkleTx*> vWorkQueue;
-        vWorkQueue.reserve(vtxPrev.size()+1);
-        vWorkQueue.push_back(this);
-        for (int i = 0; i < vWorkQueue.size(); i++)
-        {
-            const CMerkleTx* ptx = vWorkQueue[i];
-
-            if (!ptx->IsFinal())
-                return false;
-            if (ptx->GetDepthInMainChain() >= 1)
-                continue;
-            if (!ptx->IsFromMe())
-                return false;
-
-            if (mapPrev.empty())
-                BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
-                    mapPrev[tx.GetHash()] = &tx;
-
-            BOOST_FOREACH(const CTxIn& txin, ptx->vin)
-            {
-                if (!mapPrev.count(txin.prevout.hash))
-                    return false;
-                vWorkQueue.push_back(mapPrev[txin.prevout.hash]);
-            }
-        }
-        return true;
-    }
-
-    bool WriteToDisk()
-    {
-        return CWalletDB().WriteTx(GetHash(), *this);
-    }
-
-
-    int64 GetTxTime() const;
-    int GetRequestCount() const;
-
-    void AddSupportingTransactions(CTxDB& txdb);
-
-    bool AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs=true);
-    bool AcceptWalletTransaction() { CTxDB txdb("r"); return AcceptWalletTransaction(txdb); }
-
-    void RelayWalletTransaction(CTxDB& txdb);
-    void RelayWalletTransaction() { CTxDB txdb("r"); RelayWalletTransaction(txdb); }
+    bool AcceptToMemoryPool();
 };
 
 
@@ -1744,114 +1428,6 @@ public:
 
 
 
-//
-// Private key that includes an expiration date in case it never gets used.
-//
-class CWalletKey
-{
-public:
-    CPrivKey vchPrivKey;
-    int64 nTimeCreated;
-    int64 nTimeExpires;
-    std::string strComment;
-    //// todo: add something to note what created it (user, getnewaddress, change)
-    ////   maybe should have a map<string, string> property map
-
-    CWalletKey(int64 nExpires=0)
-    {
-        nTimeCreated = (nExpires ? GetTime() : 0);
-        nTimeExpires = nExpires;
-    }
-
-    IMPLEMENT_SERIALIZE
-    (
-        if (!(nType & SER_GETHASH))
-            READWRITE(nVersion);
-        READWRITE(vchPrivKey);
-        READWRITE(nTimeCreated);
-        READWRITE(nTimeExpires);
-        READWRITE(strComment);
-    )
-};
-
-
-
-
-
-
-//
-// Account information.
-// Stored in wallet with key "acc"+string account name
-//
-class CAccount
-{
-public:
-    std::vector<unsigned char> vchPubKey;
-
-    CAccount()
-    {
-        SetNull();
-    }
-
-    void SetNull()
-    {
-        vchPubKey.clear();
-    }
-
-    IMPLEMENT_SERIALIZE
-    (
-        if (!(nType & SER_GETHASH))
-            READWRITE(nVersion);
-        READWRITE(vchPubKey);
-    )
-};
-
-
-
-//
-// Internal transfers.
-// Database key is acentry<account><counter>
-//
-class CAccountingEntry
-{
-public:
-    std::string strAccount;
-    int64 nCreditDebit;
-    int64 nTime;
-    std::string strOtherAccount;
-    std::string strComment;
-
-    CAccountingEntry()
-    {
-        SetNull();
-    }
-
-    void SetNull()
-    {
-        nCreditDebit = 0;
-        nTime = 0;
-        strAccount.clear();
-        strOtherAccount.clear();
-        strComment.clear();
-    }
-
-    IMPLEMENT_SERIALIZE
-    (
-        if (!(nType & SER_GETHASH))
-            READWRITE(nVersion);
-        // Note: strAccount is serialized as part of the key, not here.
-        READWRITE(nCreditDebit);
-        READWRITE(nTime);
-        READWRITE(strOtherAccount);
-        READWRITE(strComment);
-    )
-};
-
-
-
-
-
-
 
 
 
@@ -2064,12 +1640,8 @@ public:
 
 
 extern std::map<uint256, CTransaction> mapTransactions;
-extern std::map<uint256, CWalletTx> mapWallet;
-extern std::vector<uint256> vWalletUpdated;
-extern CCriticalSection cs_mapWallet;
 extern std::map<std::vector<unsigned char>, CPrivKey> mapKeys;
 extern std::map<uint160, std::vector<unsigned char> > mapPubKeys;
 extern CCriticalSection cs_mapKeys;
-extern CKey keyUser;
 
 #endif
diff --git a/src/makefile.mingw b/src/makefile.mingw
index c3a964e8fc..fccc0e36af 100644
--- a/src/makefile.mingw
+++ b/src/makefile.mingw
@@ -33,7 +33,7 @@ DEFS=-DWIN32 -D__WXMSW__ -D_WINDOWS -DNOPCH -DUSE_SSL
 DEBUGFLAGS=-g -D__WXDEBUG__
 CFLAGS=-mthreads -O2 -w -Wno-invalid-offsetof -Wformat $(DEBUGFLAGS) $(DEFS) $(INCLUDEPATHS)
 HEADERS=headers.h strlcpy.h serialize.h uint256.h util.h key.h bignum.h base58.h \
-    script.h db.h net.h irc.h main.h rpc.h uibase.h ui.h noui.h init.h
+    script.h db.h net.h irc.h keystore.h main.h wallet.h rpc.h uibase.h ui.h noui.h init.h
 
 ifdef USE_UPNP
  INCLUDEPATHS += -I"C:\upnpc-exe-win32-20110215"
@@ -50,7 +50,9 @@ OBJS= \
     obj/db.o \
     obj/net.o \
     obj/irc.o \
+    obj/keystore.o \
     obj/main.o \
+    obj/wallet.o \
     obj/rpc.o \
     obj/init.o \
     cryptopp/obj/sha.o \
diff --git a/src/makefile.osx b/src/makefile.osx
index 4836ea3f4f..4e173a9dfa 100644
--- a/src/makefile.osx
+++ b/src/makefile.osx
@@ -33,7 +33,7 @@ DEBUGFLAGS=-g -DwxDEBUG_LEVEL=0
 # ppc doesn't work because we don't support big-endian
 CFLAGS=-mmacosx-version-min=10.5 -arch i386 -arch x86_64 -O3 -Wno-invalid-offsetof -Wformat $(DEBUGFLAGS) $(DEFS) $(INCLUDEPATHS)
 HEADERS=headers.h strlcpy.h serialize.h uint256.h util.h key.h bignum.h base58.h \
-    script.h db.h net.h irc.h main.h rpc.h uibase.h ui.h noui.h init.h
+    script.h db.h net.h irc.h keystore.h main.h wallet.h rpc.h uibase.h ui.h noui.h init.h
 
 OBJS= \
     obj/util.o \
@@ -41,7 +41,9 @@ OBJS= \
     obj/db.o \
     obj/net.o \
     obj/irc.o \
+    obj/keystore.o \
     obj/main.o \
+    obj/wallet.o \
     obj/rpc.o \
     obj/init.o \
     cryptopp/obj/sha.o \
diff --git a/src/makefile.unix b/src/makefile.unix
index 4f2da37894..f2d85b9dd3 100644
--- a/src/makefile.unix
+++ b/src/makefile.unix
@@ -39,7 +39,7 @@ LIBS+= \
 DEBUGFLAGS=-g -D__WXDEBUG__
 CXXFLAGS=-O2 -Wno-invalid-offsetof -Wformat $(DEBUGFLAGS) $(DEFS)
 HEADERS=headers.h strlcpy.h serialize.h uint256.h util.h key.h bignum.h base58.h \
-    script.h db.h net.h irc.h main.h rpc.h uibase.h ui.h noui.h init.h
+    script.h db.h net.h irc.h keystore.h main.h wallet.h rpc.h uibase.h ui.h noui.h init.h
 
 OBJS= \
     obj/util.o \
@@ -47,7 +47,9 @@ OBJS= \
     obj/db.o \
     obj/net.o \
     obj/irc.o \
+    obj/keystore.o \
     obj/main.o \
+    obj/wallet.o \
     obj/rpc.o \
     obj/init.o \
     cryptopp/obj/sha.o \
diff --git a/src/noui.h b/src/noui.h
index afb19526c1..d0072df7f2 100644
--- a/src/noui.h
+++ b/src/noui.h
@@ -5,6 +5,8 @@
 #define BITCOIN_NOUI_H
 
 #include <string>
+#include <boost/function.hpp>
+#include "wallet.h"
 
 typedef void wxWindow;
 #define wxYES                   0x00000002
diff --git a/src/script.h b/src/script.h
index 22a6020dce..efafec4470 100644
--- a/src/script.h
+++ b/src/script.h
@@ -5,6 +5,7 @@
 #define H_BITCOIN_SCRIPT
 
 #include "base58.h"
+#include "keystore.h"
 
 #include <string>
 #include <vector>
diff --git a/src/ui.cpp b/src/ui.cpp
index 0a7d45578f..72e8fe2ec8 100644
--- a/src/ui.cpp
+++ b/src/ui.cpp
@@ -3,6 +3,7 @@
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 
 #include "headers.h"
+#include "db.h"
 #include "init.h"
 #include "strlcpy.h"
 #include <boost/filesystem/fstream.hpp>
diff --git a/src/ui.h b/src/ui.h
index 16643db421..3f06ad90cb 100644
--- a/src/ui.h
+++ b/src/ui.h
@@ -4,6 +4,9 @@
 #ifndef BITCOIN_UI_H
 #define BITCOIN_UI_H
 
+#include <boost/function.hpp>
+#include "wallet.h"
+
 DECLARE_EVENT_TYPE(wxEVT_UITHREADCALL, -1)
 
 
diff --git a/src/wallet.cpp b/src/wallet.cpp
new file mode 100644
index 0000000000..a9fc92fd78
--- /dev/null
+++ b/src/wallet.cpp
@@ -0,0 +1,1056 @@
+// Copyright (c) 2009-2011 Satoshi Nakamoto & Bitcoin developers
+// 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 "db.h"
+#include "cryptopp/sha.h"
+
+using namespace std;
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// mapWallet
+//
+
+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.IsSpent(prevout.n) && wtx.vout[prevout.n].IsMine())
+            {
+                printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
+                wtx.MarkSpent(prevout.n);
+                wtx.WriteToDisk();
+                vWalletUpdated.push_back(prevout.hash);
+            }
+        }
+    }
+}
+
+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;
+            }
+            fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
+        }
+
+        //// debug print
+        printf("AddToWallet %s  %s%s\n", wtxIn.GetHash().ToString().substr(0,10).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);
+        BOOST_FOREACH(const CTxOut& txout, wtx.vout)
+        {
+            if (txout.scriptPubKey == scriptDefaultKey)
+            {
+                CWalletDB walletdb;
+                vchDefaultKey = GetKeyFromKeyPool();
+                walletdb.WriteDefaultKey(vchDefaultKey);
+                walletdb.WriteName(PubKeyToAddress(vchDefaultKey), "");
+            }
+        }
+
+        // Notify UI
+        vWalletUpdated.push_back(hash);
+    }
+
+    // Refresh UI
+    MainFrameRepaint();
+    return true;
+}
+
+bool AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
+{
+    uint256 hash = tx.GetHash();
+    bool fExisted = mapWallet.count(hash);
+    if (fExisted && !fUpdate) return false;
+    if (fExisted || tx.IsMine() || tx.IsFromMe())
+    {
+        CWalletTx wtx(tx);
+        // Get merkle branch if transaction was found in a block
+        if (pblock)
+            wtx.SetMerkleBranch(pblock);
+        return AddToWallet(wtx);
+    }
+    return false;
+}
+
+bool EraseFromWallet(uint256 hash)
+{
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        if (mapWallet.erase(hash))
+            CWalletDB().EraseTx(hash);
+    }
+    return true;
+}
+
+
+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;
+}
+
+void CWalletTx::GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, list<pair<string, int64> >& listReceived,
+                           list<pair<string, int64> >& listSent, int64& nFee, string& strSentAccount) const
+{
+    nGeneratedImmature = nGeneratedMature = nFee = 0;
+    listReceived.clear();
+    listSent.clear();
+    strSentAccount = strFromAccount;
+
+    if (IsCoinBase())
+    {
+        if (GetBlocksToMaturity() > 0)
+            nGeneratedImmature = CTransaction::GetCredit();
+        else
+            nGeneratedMature = GetCredit();
+        return;
+    }
+
+    // Compute fee:
+    int64 nDebit = GetDebit();
+    if (nDebit > 0) // debit>0 means we signed/sent this transaction
+    {
+        int64 nValueOut = GetValueOut();
+        nFee = nDebit - nValueOut;
+    }
+
+    // Sent/received.  Standard client will never generate a send-to-multiple-recipients,
+    // but non-standard clients might (so return a list of address/amount pairs)
+    BOOST_FOREACH(const CTxOut& txout, vout)
+    {
+        string address;
+        uint160 hash160;
+        vector<unsigned char> vchPubKey;
+        if (ExtractHash160(txout.scriptPubKey, hash160))
+            address = Hash160ToAddress(hash160);
+        else if (ExtractPubKey(txout.scriptPubKey, false, vchPubKey))
+            address = PubKeyToAddress(vchPubKey);
+        else
+        {
+            printf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
+                   this->GetHash().ToString().c_str());
+            address = " unknown ";
+        }
+
+        // Don't report 'change' txouts
+        if (nDebit > 0 && txout.IsChange())
+            continue;
+
+        if (nDebit > 0)
+            listSent.push_back(make_pair(address, txout.nValue));
+
+        if (txout.IsMine())
+            listReceived.push_back(make_pair(address, txout.nValue));
+    }
+
+}
+
+void CWalletTx::GetAccountAmounts(const string& strAccount, int64& nGenerated, int64& nReceived, 
+                                  int64& nSent, int64& nFee) const
+{
+    nGenerated = nReceived = nSent = nFee = 0;
+
+    int64 allGeneratedImmature, allGeneratedMature, allFee;
+    allGeneratedImmature = allGeneratedMature = allFee = 0;
+    string strSentAccount;
+    list<pair<string, int64> > listReceived;
+    list<pair<string, int64> > listSent;
+    GetAmounts(allGeneratedImmature, allGeneratedMature, listReceived, listSent, allFee, strSentAccount);
+
+    if (strAccount == "")
+        nGenerated = allGeneratedMature;
+    if (strAccount == strSentAccount)
+    {
+        BOOST_FOREACH(const PAIRTYPE(string,int64)& s, listSent)
+            nSent += s.second;
+        nFee = allFee;
+    }
+    CRITICAL_BLOCK(cs_mapAddressBook)
+    {
+        BOOST_FOREACH(const PAIRTYPE(string,int64)& r, listReceived)
+        {
+            if (mapAddressBook.count(r.first))
+            {
+                if (mapAddressBook[r.first] == strAccount)
+                {
+                    nReceived += r.second;
+                }
+            }
+            else if (strAccount.empty())
+            {
+                nReceived += r.second;
+            }
+        }
+    }
+}
+
+void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
+{
+    vtxPrev.clear();
+
+    const int COPY_DEPTH = 3;
+    if (SetMerkleBranch() < COPY_DEPTH)
+    {
+        vector<uint256> vWorkQueue;
+        BOOST_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];
+                    BOOST_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)
+                    BOOST_FOREACH(const CTxIn& txin, tx.vin)
+                        vWorkQueue.push_back(txin.prevout.hash);
+            }
+        }
+    }
+
+    reverse(vtxPrev.begin(), vtxPrev.end());
+}
+
+bool CWalletTx::WriteToDisk()
+{
+    return CWalletDB().WriteTx(GetHash(), *this);
+}
+
+int ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
+{
+    int ret = 0;
+
+    CBlockIndex* pindex = pindexStart;
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        while (pindex)
+        {
+            CBlock block;
+            block.ReadFromDisk(pindex, true);
+            BOOST_FOREACH(CTransaction& tx, block.vtx)
+            {
+                if (AddToWalletIfInvolvingMe(tx, &block, fUpdate))
+                    ret++;
+            }
+            pindex = pindex->pnext;
+        }
+    }
+    return ret;
+}
+
+void ReacceptWalletTransactions()
+{
+    CTxDB txdb("r");
+    bool fRepeat = true;
+    while (fRepeat) CRITICAL_BLOCK(cs_mapWallet)
+    {
+        fRepeat = false;
+        vector<CDiskTxPos> vMissingTx;
+        BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
+        {
+            CWalletTx& wtx = item.second;
+            if (wtx.IsCoinBase() && wtx.IsSpent(0))
+                continue;
+
+            CTxIndex txindex;
+            bool fUpdated = false;
+            if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
+            {
+                // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
+                if (txindex.vSpent.size() != wtx.vout.size())
+                {
+                    printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %d != wtx.vout.size() %d\n", txindex.vSpent.size(), wtx.vout.size());
+                    continue;
+                }
+                for (int i = 0; i < txindex.vSpent.size(); i++)
+                {
+                    if (wtx.IsSpent(i))
+                        continue;
+                    if (!txindex.vSpent[i].IsNull() && wtx.vout[i].IsMine())
+                    {
+                        wtx.MarkSpent(i);
+                        fUpdated = true;
+                        vMissingTx.push_back(txindex.vSpent[i]);
+                    }
+                }
+                if (fUpdated)
+                {
+                    printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
+                    wtx.MarkDirty();
+                    wtx.WriteToDisk();
+                }
+            }
+            else
+            {
+                // Reaccept any txes of ours that aren't already in a block
+                if (!wtx.IsCoinBase())
+                    wtx.AcceptWalletTransaction(txdb, false);
+            }
+        }
+        if (!vMissingTx.empty())
+        {
+            // TODO: optimize this to scan just part of the block chain?
+            if (ScanForWalletTransactions(pindexGenesisBlock))
+                fRepeat = true;  // Found missing transactions: re-do Reaccept.
+        }
+    }
+}
+
+void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
+{
+    BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
+    {
+        if (!tx.IsCoinBase())
+        {
+            uint256 hash = tx.GetHash();
+            if (!txdb.ContainsTx(hash))
+                RelayMessage(CInv(MSG_TX, hash), (CTransaction)tx);
+        }
+    }
+    if (!IsCoinBase())
+    {
+        uint256 hash = GetHash();
+        if (!txdb.ContainsTx(hash))
+        {
+            printf("Relaying wtx %s\n", hash.ToString().substr(0,10).c_str());
+            RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
+        }
+    }
+}
+
+void CWalletTx::RelayWalletTransaction()
+{
+   CTxDB txdb("r");
+   RelayWalletTransaction(txdb);
+}
+
+void ResendWalletTransactions()
+{
+    // Do this infrequently and randomly to avoid giving away
+    // that these are our transactions.
+    static int64 nNextTime;
+    if (GetTime() < nNextTime)
+        return;
+    bool fFirst = (nNextTime == 0);
+    nNextTime = GetTime() + GetRand(30 * 60);
+    if (fFirst)
+        return;
+
+    // Only do it if there's been a new block since last time
+    static int64 nLastTime;
+    if (nTimeBestReceived < nLastTime)
+        return;
+    nLastTime = GetTime();
+
+    // Rebroadcast any of our txes that aren't in a block yet
+    printf("ResendWalletTransactions()\n");
+    CTxDB txdb("r");
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        // Sort them in chronological order
+        multimap<unsigned int, CWalletTx*> mapSorted;
+        BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
+        {
+            CWalletTx& wtx = item.second;
+            // Don't rebroadcast until it's had plenty of time that
+            // it should have gotten in already by now.
+            if (nTimeBestReceived - (int64)wtx.nTimeReceived > 5 * 60)
+                mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
+        }
+        BOOST_FOREACH(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
+        {
+            CWalletTx& wtx = *item.second;
+            wtx.RelayWalletTransaction(txdb);
+        }
+    }
+}
+
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// Actions
+//
+
+
+int64 GetBalance()
+{
+    int64 nStart = GetTimeMillis();
+
+    int64 nTotal = 0;
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
+        {
+            CWalletTx* pcoin = &(*it).second;
+            if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
+                continue;
+            nTotal += pcoin->GetAvailableCredit();
+        }
+    }
+
+    //printf("GetBalance() %"PRI64d"ms\n", GetTimeMillis() - nStart);
+    return nTotal;
+}
+
+
+bool SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<pair<CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet)
+{
+    setCoinsRet.clear();
+    nValueRet = 0;
+
+    // List of values less than target
+    pair<int64, pair<CWalletTx*,unsigned int> > coinLowestLarger;
+    coinLowestLarger.first = INT64_MAX;
+    coinLowestLarger.second.first = NULL;
+    vector<pair<int64, pair<CWalletTx*,unsigned int> > > vValue;
+    int64 nTotalLower = 0;
+
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+       vector<CWalletTx*> vCoins;
+       vCoins.reserve(mapWallet.size());
+       for (map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
+           vCoins.push_back(&(*it).second);
+       random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
+
+       BOOST_FOREACH(CWalletTx* pcoin, vCoins)
+       {
+            if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
+                continue;
+
+            if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
+                continue;
+
+            int nDepth = pcoin->GetDepthInMainChain();
+            if (nDepth < (pcoin->IsFromMe() ? nConfMine : nConfTheirs))
+                continue;
+
+            for (int i = 0; i < pcoin->vout.size(); i++)
+            {
+                if (pcoin->IsSpent(i) || !pcoin->vout[i].IsMine())
+                    continue;
+
+                int64 n = pcoin->vout[i].nValue;
+
+                if (n <= 0)
+                    continue;
+
+                pair<int64,pair<CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin,i));
+
+                if (n == nTargetValue)
+                {
+                    setCoinsRet.insert(coin.second);
+                    nValueRet += coin.first;
+                    return true;
+                }
+                else if (n < nTargetValue + CENT)
+                {
+                    vValue.push_back(coin);
+                    nTotalLower += n;
+                }
+                else if (n < coinLowestLarger.first)
+                {
+                    coinLowestLarger = coin;
+                }
+            }
+        }
+    }
+
+    if (nTotalLower == nTargetValue || nTotalLower == nTargetValue + CENT)
+    {
+        for (int i = 0; i < vValue.size(); ++i)
+        {
+            setCoinsRet.insert(vValue[i].second);
+            nValueRet += vValue[i].first;
+        }
+        return true;
+    }
+
+    if (nTotalLower < nTargetValue + (coinLowestLarger.second.first ? CENT : 0))
+    {
+        if (coinLowestLarger.second.first == NULL)
+            return false;
+        setCoinsRet.insert(coinLowestLarger.second);
+        nValueRet += coinLowestLarger.first;
+        return true;
+    }
+
+    if (nTotalLower >= nTargetValue + CENT)
+        nTargetValue += CENT;
+
+    // Solve subset sum by stochastic approximation
+    sort(vValue.rbegin(), vValue.rend());
+    vector<char> vfIncluded;
+    vector<char> vfBest(vValue.size(), true);
+    int64 nBest = nTotalLower;
+
+    for (int nRep = 0; nRep < 1000 && nBest != nTargetValue; nRep++)
+    {
+        vfIncluded.assign(vValue.size(), false);
+        int64 nTotal = 0;
+        bool fReachedTarget = false;
+        for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
+        {
+            for (int i = 0; i < vValue.size(); i++)
+            {
+                if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
+                {
+                    nTotal += vValue[i].first;
+                    vfIncluded[i] = true;
+                    if (nTotal >= nTargetValue)
+                    {
+                        fReachedTarget = true;
+                        if (nTotal < nBest)
+                        {
+                            nBest = nTotal;
+                            vfBest = vfIncluded;
+                        }
+                        nTotal -= vValue[i].first;
+                        vfIncluded[i] = false;
+                    }
+                }
+            }
+        }
+    }
+
+    // If the next larger is still closer, return it
+    if (coinLowestLarger.second.first && coinLowestLarger.first - nTargetValue <= nBest - nTargetValue)
+    {
+        setCoinsRet.insert(coinLowestLarger.second);
+        nValueRet += coinLowestLarger.first;
+    }
+    else {
+        for (int i = 0; i < vValue.size(); i++)
+            if (vfBest[i])
+            {
+                setCoinsRet.insert(vValue[i].second);
+                nValueRet += vValue[i].first;
+            }
+
+        //// debug print
+        printf("SelectCoins() best subset: ");
+        for (int i = 0; i < vValue.size(); i++)
+            if (vfBest[i])
+                printf("%s ", FormatMoney(vValue[i].first).c_str());
+        printf("total %s\n", FormatMoney(nBest).c_str());
+    }
+
+    return true;
+}
+
+bool SelectCoins(int64 nTargetValue, set<pair<CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet)
+{
+    return (SelectCoinsMinConf(nTargetValue, 1, 6, setCoinsRet, nValueRet) ||
+            SelectCoinsMinConf(nTargetValue, 1, 1, setCoinsRet, nValueRet) ||
+            SelectCoinsMinConf(nTargetValue, 0, 1, setCoinsRet, nValueRet));
+}
+
+
+
+
+bool CreateTransaction(const vector<pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
+{
+    int64 nValue = 0;
+    BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
+    {
+        if (nValue < 0)
+            return false;
+        nValue += s.second;
+    }
+    if (vecSend.empty() || nValue < 0)
+        return false;
+
+    CRITICAL_BLOCK(cs_main)
+    {
+        // txdb must be opened before the mapWallet lock
+        CTxDB txdb("r");
+        CRITICAL_BLOCK(cs_mapWallet)
+        {
+            nFeeRet = nTransactionFee;
+            loop
+            {
+                wtxNew.vin.clear();
+                wtxNew.vout.clear();
+                wtxNew.fFromMe = true;
+
+                int64 nTotalValue = nValue + nFeeRet;
+                double dPriority = 0;
+                // vouts to the payees
+                BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
+                    wtxNew.vout.push_back(CTxOut(s.second, s.first));
+
+                // Choose coins to use
+                set<pair<CWalletTx*,unsigned int> > setCoins;
+                int64 nValueIn = 0;
+                if (!SelectCoins(nTotalValue, setCoins, nValueIn))
+                    return false;
+                BOOST_FOREACH(PAIRTYPE(CWalletTx*, unsigned int) pcoin, setCoins)
+                {
+                    int64 nCredit = pcoin.first->vout[pcoin.second].nValue;
+                    dPriority += (double)nCredit * pcoin.first->GetDepthInMainChain();
+                }
+
+                // Fill a vout back to self with any change
+                int64 nChange = nValueIn - nTotalValue;
+                if (nChange >= CENT)
+                {
+                    // Note: We use a new key here to keep it from being obvious which side is the change.
+                    //  The drawback is that by not reusing a previous key, the change may be lost if a
+                    //  backup is restored, if the backup doesn't have the new private key for the change.
+                    //  If we reused the old key, it would be possible to add code to look for and
+                    //  rediscover unknown transactions that were written with keys of ours to recover
+                    //  post-backup change.
+
+                    // Reserve a new key pair from key pool
+                    vector<unsigned char> vchPubKey = reservekey.GetReservedKey();
+                    assert(mapKeys.count(vchPubKey));
+
+                    // Fill a vout to ourself, using same address type as the payment
+                    CScript scriptChange;
+                    if (vecSend[0].first.GetBitcoinAddressHash160() != 0)
+                        scriptChange.SetBitcoinAddress(vchPubKey);
+                    else
+                        scriptChange << vchPubKey << OP_CHECKSIG;
+
+                    // Insert change txn at random position:
+                    vector<CTxOut>::iterator position = wtxNew.vout.begin()+GetRandInt(wtxNew.vout.size());
+                    wtxNew.vout.insert(position, CTxOut(nChange, scriptChange));
+                }
+                else
+                    reservekey.ReturnKey();
+
+                // Fill vin
+                BOOST_FOREACH(const PAIRTYPE(CWalletTx*,unsigned int)& coin, setCoins)
+                    wtxNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second));
+
+                // Sign
+                int nIn = 0;
+                BOOST_FOREACH(const PAIRTYPE(CWalletTx*,unsigned int)& coin, setCoins)
+                    if (!SignSignature(*coin.first, wtxNew, nIn++))
+                        return false;
+
+                // Limit size
+                unsigned int nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK);
+                if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
+                    return false;
+                dPriority /= nBytes;
+
+                // Check that enough fee is included
+                int64 nPayFee = nTransactionFee * (1 + (int64)nBytes / 1000);
+                bool fAllowFree = CTransaction::AllowFree(dPriority);
+                int64 nMinFee = wtxNew.GetMinFee(1, fAllowFree);
+                if (nFeeRet < max(nPayFee, nMinFee))
+                {
+                    nFeeRet = max(nPayFee, nMinFee);
+                    continue;
+                }
+
+                // Fill vtxPrev by copying from previous transactions vtxPrev
+                wtxNew.AddSupportingTransactions(txdb);
+                wtxNew.fTimeReceivedIsTxTime = true;
+
+                break;
+            }
+        }
+    }
+    return true;
+}
+
+bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
+{
+    vector< pair<CScript, int64> > vecSend;
+    vecSend.push_back(make_pair(scriptPubKey, nValue));
+    return CreateTransaction(vecSend, wtxNew, reservekey, nFeeRet);
+}
+
+// Call after CreateTransaction unless you want to abort
+bool CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
+{
+    CRITICAL_BLOCK(cs_main)
+    {
+        printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
+        CRITICAL_BLOCK(cs_mapWallet)
+        {
+            // This is only to keep the database open to defeat the auto-flush for the
+            // duration of this scope.  This is the only place where this optimization
+            // maybe makes sense; please don't do it anywhere else.
+            CWalletDB walletdb("r");
+
+            // Take key pair from key pool so it won't be used again
+            reservekey.KeepKey();
+
+            // Add tx to wallet, because if it has change it's also ours,
+            // otherwise just for transaction history.
+            AddToWallet(wtxNew);
+
+            // Mark old coins as spent
+            set<CWalletTx*> setCoins;
+            BOOST_FOREACH(const CTxIn& txin, wtxNew.vin)
+            {
+                CWalletTx &pcoin = mapWallet[txin.prevout.hash];
+                pcoin.MarkSpent(txin.prevout.n);
+                pcoin.WriteToDisk();
+                vWalletUpdated.push_back(pcoin.GetHash());
+            }
+        }
+
+        // Track how many getdata requests our transaction gets
+        CRITICAL_BLOCK(cs_mapRequestCount)
+            mapRequestCount[wtxNew.GetHash()] = 0;
+
+        // Broadcast
+        if (!wtxNew.AcceptToMemoryPool())
+        {
+            // This must not fail. The transaction has already been signed and recorded.
+            printf("CommitTransaction() : Error: Transaction not valid");
+            return false;
+        }
+        wtxNew.RelayWalletTransaction();
+    }
+    MainFrameRepaint();
+    return true;
+}
+
+
+
+
+// requires cs_main lock
+string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
+{
+    CReserveKey reservekey;
+    int64 nFeeRequired;
+    if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired))
+    {
+        string strError;
+        if (nValue + nFeeRequired > GetBalance())
+            strError = strprintf(_("Error: This transaction requires a transaction fee of at least %s because of its amount, complexity, or use of recently received funds  "), FormatMoney(nFeeRequired).c_str());
+        else
+            strError = _("Error: Transaction creation failed  ");
+        printf("SendMoney() : %s", strError.c_str());
+        return strError;
+    }
+
+    if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL))
+        return "ABORTED";
+
+    if (!CommitTransaction(wtxNew, reservekey))
+        return _("Error: The transaction was rejected.  This might happen if some of the coins in your wallet were already spent, such as if you used a copy of wallet.dat and coins were spent in the copy but not marked as spent here.");
+
+    MainFrameRepaint();
+    return "";
+}
+
+
+
+// requires cs_main lock
+string SendMoneyToBitcoinAddress(string strAddress, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
+{
+    // Check amount
+    if (nValue <= 0)
+        return _("Invalid amount");
+    if (nValue + nTransactionFee > GetBalance())
+        return _("Insufficient funds");
+
+    // Parse bitcoin address
+    CScript scriptPubKey;
+    if (!scriptPubKey.SetBitcoinAddress(strAddress))
+        return _("Invalid bitcoin address");
+
+    return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
+}
+
+
+
+
+bool LoadWallet(bool& fFirstRunRet)
+{
+    fFirstRunRet = false;
+    if (!CWalletDB("cr+").LoadWallet())
+        return false;
+    fFirstRunRet = vchDefaultKey.empty();
+
+    if (mapKeys.count(vchDefaultKey))
+    {
+        // Set keyUser
+        keyUser.SetPubKey(vchDefaultKey);
+        keyUser.SetPrivKey(mapKeys[vchDefaultKey]);
+    }
+    else
+    {
+        // Create new keyUser and set as default key
+        RandAddSeedPerfmon();
+
+        CWalletDB walletdb;
+        vchDefaultKey = GetKeyFromKeyPool();
+        walletdb.WriteDefaultKey(vchDefaultKey);
+        walletdb.WriteName(PubKeyToAddress(vchDefaultKey), "");
+    }
+
+    CreateThread(ThreadFlushWalletDB, NULL);
+    return true;
+}
+
+void CWalletDB::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool)
+{
+    nIndex = -1;
+    keypool.vchPubKey.clear();
+    CRITICAL_BLOCK(cs_main)
+    CRITICAL_BLOCK(cs_mapWallet)
+    CRITICAL_BLOCK(cs_setKeyPool)
+    {
+        // Top up key pool
+        int64 nTargetSize = max(GetArg("-keypool", 100), (int64)0);
+        while (setKeyPool.size() < nTargetSize+1)
+        {
+            int64 nEnd = 1;
+            if (!setKeyPool.empty())
+                nEnd = *(--setKeyPool.end()) + 1;
+            if (!Write(make_pair(string("pool"), nEnd), CKeyPool(GenerateNewKey())))
+                throw runtime_error("ReserveKeyFromKeyPool() : writing generated key failed");
+            setKeyPool.insert(nEnd);
+            printf("keypool added key %"PRI64d", size=%d\n", nEnd, setKeyPool.size());
+        }
+
+        // Get the oldest key
+        assert(!setKeyPool.empty());
+        nIndex = *(setKeyPool.begin());
+        setKeyPool.erase(setKeyPool.begin());
+        if (!Read(make_pair(string("pool"), nIndex), keypool))
+            throw runtime_error("ReserveKeyFromKeyPool() : read failed");
+        if (!mapKeys.count(keypool.vchPubKey))
+            throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
+        assert(!keypool.vchPubKey.empty());
+        printf("keypool reserve %"PRI64d"\n", nIndex);
+    }
+}
+
+void CWalletDB::KeepKey(int64 nIndex)
+{
+    // Remove from key pool
+    CRITICAL_BLOCK(cs_main)
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        Erase(make_pair(string("pool"), nIndex));
+    }
+    printf("keypool keep %"PRI64d"\n", nIndex);
+}
+
+void CWalletDB::ReturnKey(int64 nIndex)
+{
+    // Return to key pool
+    CRITICAL_BLOCK(cs_setKeyPool)
+        setKeyPool.insert(nIndex);
+    printf("keypool return %"PRI64d"\n", nIndex);
+}
+
+vector<unsigned char> GetKeyFromKeyPool()
+{
+    CWalletDB walletdb;
+    int64 nIndex = 0;
+    CKeyPool keypool;
+    walletdb.ReserveKeyFromKeyPool(nIndex, keypool);
+    walletdb.KeepKey(nIndex);
+    return keypool.vchPubKey;
+}
+
+int64 GetOldestKeyPoolTime()
+{
+    CWalletDB walletdb;
+    int64 nIndex = 0;
+    CKeyPool keypool;
+    walletdb.ReserveKeyFromKeyPool(nIndex, keypool);
+    walletdb.ReturnKey(nIndex);
+    return keypool.nTime;
+}
+
+std::vector<unsigned char> CReserveKey::GetReservedKey()
+{
+    if (nIndex == -1)
+    {
+        CKeyPool keypool;
+        CWalletDB().ReserveKeyFromKeyPool(nIndex, keypool);
+        vchPubKey = keypool.vchPubKey;
+    }
+    assert(!vchPubKey.empty());
+    return vchPubKey;
+}
+
+void CReserveKey::KeepKey()
+{
+    if (nIndex != -1)
+        CWalletDB().KeepKey(nIndex);
+    nIndex = -1;
+    vchPubKey.clear();
+}
+
+void CReserveKey::ReturnKey()
+{
+    if (nIndex != -1)
+        CWalletDB::ReturnKey(nIndex);
+    nIndex = -1;
+    vchPubKey.clear();
+}
diff --git a/src/wallet.h b/src/wallet.h
new file mode 100644
index 0000000000..f9d2ea0989
--- /dev/null
+++ b/src/wallet.h
@@ -0,0 +1,441 @@
+// Copyright (c) 2009-2011 Satoshi Nakamoto & Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+#ifndef BITCOIN_WALLET_H
+#define BITCOIN_WALLET_H
+
+#include "bignum.h"
+#include "script.h"
+
+class CWalletTx;
+class CReserveKey;
+class CWalletDB;
+
+extern std::map<uint256, CWalletTx> mapWallet;
+extern std::vector<uint256> vWalletUpdated;
+extern CCriticalSection cs_mapWallet;
+
+extern std::map<uint256, int> mapRequestCount;
+extern CCriticalSection cs_mapRequestCount;
+
+extern std::map<std::string, std::string> mapAddressBook;
+extern CCriticalSection cs_mapAddressBook;
+
+extern std::vector<unsigned char> vchDefaultKey;
+extern CKey keyUser;
+
+bool AddToWallet(const CWalletTx& wtxIn);
+bool AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate = false);
+bool EraseFromWallet(uint256 hash);
+void WalletUpdateSpent(const COutPoint& prevout);
+int ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate = false);
+void ReacceptWalletTransactions();
+void ResendWalletTransactions();
+int64 GetBalance();
+bool CreateTransaction(const std::vector<std::pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet);
+bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet);
+bool CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey);
+bool BroadcastTransaction(CWalletTx& wtxNew);
+std::string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
+std::string SendMoneyToBitcoinAddress(std::string strAddress, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
+
+
+
+//
+// A transaction with a bunch of additional info that only the owner cares
+// about.  It includes any unrecorded transactions needed to link it back
+// to the block chain.
+//
+class CWalletTx : public CMerkleTx
+{
+public:
+    std::vector<CMerkleTx> vtxPrev;
+    std::map<std::string, std::string> mapValue;
+    std::vector<std::pair<std::string, std::string> > vOrderForm;
+    unsigned int fTimeReceivedIsTxTime;
+    unsigned int nTimeReceived;  // time received by this node
+    char fFromMe;
+    std::string strFromAccount;
+    std::vector<char> vfSpent;
+
+    // memory only
+    mutable char fDebitCached;
+    mutable char fCreditCached;
+    mutable char fAvailableCreditCached;
+    mutable char fChangeCached;
+    mutable int64 nDebitCached;
+    mutable int64 nCreditCached;
+    mutable int64 nAvailableCreditCached;
+    mutable int64 nChangeCached;
+
+    // memory only UI hints
+    mutable unsigned int nTimeDisplayed;
+    mutable int nLinesDisplayed;
+    mutable char fConfirmedDisplayed;
+
+
+    CWalletTx()
+    {
+        Init();
+    }
+
+    CWalletTx(const CMerkleTx& txIn) : CMerkleTx(txIn)
+    {
+        Init();
+    }
+
+    CWalletTx(const CTransaction& txIn) : CMerkleTx(txIn)
+    {
+        Init();
+    }
+
+    void Init()
+    {
+        vtxPrev.clear();
+        mapValue.clear();
+        vOrderForm.clear();
+        fTimeReceivedIsTxTime = false;
+        nTimeReceived = 0;
+        fFromMe = false;
+        strFromAccount.clear();
+        vfSpent.clear();
+        fDebitCached = false;
+        fCreditCached = false;
+        fAvailableCreditCached = false;
+        fChangeCached = false;
+        nDebitCached = 0;
+        nCreditCached = 0;
+        nAvailableCreditCached = 0;
+        nChangeCached = 0;
+        nTimeDisplayed = 0;
+        nLinesDisplayed = 0;
+        fConfirmedDisplayed = false;
+    }
+
+    IMPLEMENT_SERIALIZE
+    (
+        CWalletTx* pthis = const_cast<CWalletTx*>(this);
+        if (fRead)
+            pthis->Init();
+        char fSpent = false;
+
+        if (!fRead)
+        {
+            pthis->mapValue["fromaccount"] = pthis->strFromAccount;
+
+            std::string str;
+            BOOST_FOREACH(char f, vfSpent)
+            {
+                str += (f ? '1' : '0');
+                if (f)
+                    fSpent = true;
+            }
+            pthis->mapValue["spent"] = str;
+        }
+
+        nSerSize += SerReadWrite(s, *(CMerkleTx*)this, nType, nVersion,ser_action);
+        READWRITE(vtxPrev);
+        READWRITE(mapValue);
+        READWRITE(vOrderForm);
+        READWRITE(fTimeReceivedIsTxTime);
+        READWRITE(nTimeReceived);
+        READWRITE(fFromMe);
+        READWRITE(fSpent);
+
+        if (fRead)
+        {
+            pthis->strFromAccount = pthis->mapValue["fromaccount"];
+
+            if (mapValue.count("spent"))
+                BOOST_FOREACH(char c, pthis->mapValue["spent"])
+                    pthis->vfSpent.push_back(c != '0');
+            else
+                pthis->vfSpent.assign(vout.size(), fSpent);
+        }
+
+        pthis->mapValue.erase("fromaccount");
+        pthis->mapValue.erase("version");
+        pthis->mapValue.erase("spent");
+    )
+
+    // marks certain txout's as spent
+    // returns true if any update took place
+    bool UpdateSpent(const std::vector<char>& vfNewSpent)
+    {
+        bool fReturn = false;
+        for (int i=0; i < vfNewSpent.size(); i++)
+        {
+            if (i == vfSpent.size())
+                break;
+
+            if (vfNewSpent[i] && !vfSpent[i])
+            {
+                vfSpent[i] = true;
+                fReturn = true;
+                fAvailableCreditCached = false;
+            }
+        }
+        return fReturn;
+    }
+
+    void MarkDirty()
+    {
+        fCreditCached = false;
+        fAvailableCreditCached = false;
+        fDebitCached = false;
+        fChangeCached = false;
+    }
+
+    void MarkSpent(unsigned int nOut)
+    {
+        if (nOut >= vout.size())
+            throw std::runtime_error("CWalletTx::MarkSpent() : nOut out of range");
+        vfSpent.resize(vout.size());
+        if (!vfSpent[nOut])
+        {
+            vfSpent[nOut] = true;
+            fAvailableCreditCached = false;
+        }
+    }
+
+    bool IsSpent(unsigned int nOut) const
+    {
+        if (nOut >= vout.size())
+            throw std::runtime_error("CWalletTx::IsSpent() : nOut out of range");
+        if (nOut >= vfSpent.size())
+            return false;
+        return (!!vfSpent[nOut]);
+    }
+
+    int64 GetDebit() const
+    {
+        if (vin.empty())
+            return 0;
+        if (fDebitCached)
+            return nDebitCached;
+        nDebitCached = CTransaction::GetDebit();
+        fDebitCached = true;
+        return nDebitCached;
+    }
+
+    int64 GetCredit(bool fUseCache=true) const
+    {
+        // Must wait until coinbase is safely deep enough in the chain before valuing it
+        if (IsCoinBase() && GetBlocksToMaturity() > 0)
+            return 0;
+
+        // GetBalance can assume transactions in mapWallet won't change
+        if (fUseCache && fCreditCached)
+            return nCreditCached;
+        nCreditCached = CTransaction::GetCredit();
+        fCreditCached = true;
+        return nCreditCached;
+    }
+
+    int64 GetAvailableCredit(bool fUseCache=true) const
+    {
+        // Must wait until coinbase is safely deep enough in the chain before valuing it
+        if (IsCoinBase() && GetBlocksToMaturity() > 0)
+            return 0;
+
+        if (fUseCache && fAvailableCreditCached)
+            return nAvailableCreditCached;
+
+        int64 nCredit = 0;
+        for (int i = 0; i < vout.size(); i++)
+        {
+            if (!IsSpent(i))
+            {
+                const CTxOut &txout = vout[i];
+                nCredit += txout.GetCredit();
+                if (!MoneyRange(nCredit))
+                    throw std::runtime_error("CWalletTx::GetAvailableCredit() : value out of range");
+            }
+        }
+
+        nAvailableCreditCached = nCredit;
+        fAvailableCreditCached = true;
+        return nCredit;
+    }
+
+
+    int64 GetChange() const
+    {
+        if (fChangeCached)
+            return nChangeCached;
+        nChangeCached = CTransaction::GetChange();
+        fChangeCached = true;
+        return nChangeCached;
+    }
+
+    void GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, std::list<std::pair<std::string /* address */, int64> >& listReceived,
+                    std::list<std::pair<std::string /* address */, int64> >& listSent, int64& nFee, std::string& strSentAccount) const;
+
+    void GetAccountAmounts(const std::string& strAccount, int64& nGenerated, int64& nReceived,
+                           int64& nSent, int64& nFee) const;
+
+    bool IsFromMe() const
+    {
+        return (GetDebit() > 0);
+    }
+
+    bool IsConfirmed() const
+    {
+        // Quick answer in most cases
+        if (!IsFinal())
+            return false;
+        if (GetDepthInMainChain() >= 1)
+            return true;
+        if (!IsFromMe()) // using wtx's cached debit
+            return false;
+
+        // If no confirmations but it's from us, we can still
+        // consider it confirmed if all dependencies are confirmed
+        std::map<uint256, const CMerkleTx*> mapPrev;
+        std::vector<const CMerkleTx*> vWorkQueue;
+        vWorkQueue.reserve(vtxPrev.size()+1);
+        vWorkQueue.push_back(this);
+        for (int i = 0; i < vWorkQueue.size(); i++)
+        {
+            const CMerkleTx* ptx = vWorkQueue[i];
+
+            if (!ptx->IsFinal())
+                return false;
+            if (ptx->GetDepthInMainChain() >= 1)
+                continue;
+            if (!ptx->IsFromMe())
+                return false;
+
+            if (mapPrev.empty())
+                BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
+                    mapPrev[tx.GetHash()] = &tx;
+
+            BOOST_FOREACH(const CTxIn& txin, ptx->vin)
+            {
+                if (!mapPrev.count(txin.prevout.hash))
+                    return false;
+                vWorkQueue.push_back(mapPrev[txin.prevout.hash]);
+            }
+        }
+        return true;
+    }
+
+    bool WriteToDisk();
+
+    int64 GetTxTime() const;
+    int GetRequestCount() const;
+
+    void AddSupportingTransactions(CTxDB& txdb);
+
+    bool AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs=true);
+    bool AcceptWalletTransaction();
+
+    void RelayWalletTransaction(CTxDB& txdb);
+    void RelayWalletTransaction();
+};
+
+
+//
+// Private key that includes an expiration date in case it never gets used.
+//
+class CWalletKey
+{
+public:
+    CPrivKey vchPrivKey;
+    int64 nTimeCreated;
+    int64 nTimeExpires;
+    std::string strComment;
+    //// todo: add something to note what created it (user, getnewaddress, change)
+    ////   maybe should have a map<string, string> property map
+
+    CWalletKey(int64 nExpires=0)
+    {
+        nTimeCreated = (nExpires ? GetTime() : 0);
+        nTimeExpires = nExpires;
+    }
+
+    IMPLEMENT_SERIALIZE
+    (
+        if (!(nType & SER_GETHASH))
+            READWRITE(nVersion);
+        READWRITE(vchPrivKey);
+        READWRITE(nTimeCreated);
+        READWRITE(nTimeExpires);
+        READWRITE(strComment);
+    )
+};
+
+
+
+
+
+
+//
+// Account information.
+// Stored in wallet with key "acc"+string account name
+//
+class CAccount
+{
+public:
+    std::vector<unsigned char> vchPubKey;
+
+    CAccount()
+    {
+        SetNull();
+    }
+
+    void SetNull()
+    {
+        vchPubKey.clear();
+    }
+
+    IMPLEMENT_SERIALIZE
+    (
+        if (!(nType & SER_GETHASH))
+            READWRITE(nVersion);
+        READWRITE(vchPubKey);
+    )
+};
+
+
+
+//
+// Internal transfers.
+// Database key is acentry<account><counter>
+//
+class CAccountingEntry
+{
+public:
+    std::string strAccount;
+    int64 nCreditDebit;
+    int64 nTime;
+    std::string strOtherAccount;
+    std::string strComment;
+
+    CAccountingEntry()
+    {
+        SetNull();
+    }
+
+    void SetNull()
+    {
+        nCreditDebit = 0;
+        nTime = 0;
+        strAccount.clear();
+        strOtherAccount.clear();
+        strComment.clear();
+    }
+
+    IMPLEMENT_SERIALIZE
+    (
+        if (!(nType & SER_GETHASH))
+            READWRITE(nVersion);
+        // Note: strAccount is serialized as part of the key, not here.
+        READWRITE(nCreditDebit);
+        READWRITE(nTime);
+        READWRITE(strOtherAccount);
+        READWRITE(strComment);
+    )
+};
+
+#endif