experimental-genesis

raw
experimental-genesis    1 //  /****************************\
experimental-genesis    2 // *      EXPERIMENTAL BRANCH.    *
experimental-genesis    3 // *    FOR LABORATORY USE ONLY.  *
experimental-genesis    4 // ********************************
experimental-genesis    5 //           ************
experimental-genesis    6 //          **************
experimental-genesis    7 //         ****************
experimental-genesis    8 //        ****   ****   ****
experimental-genesis    9 //        ***     ***    ***
experimental-genesis   10 //        ***     ***    ***
experimental-genesis   11 //         ***    * *    **
experimental-genesis   12 //         ******** ********
experimental-genesis   13 //         *******   ******
experimental-genesis   14 //             ***   **
experimental-genesis   15 //           *  ******* **
experimental-genesis   16 //           ** * * * * *
experimental-genesis   17 //     **     *         *     ***
experimental-genesis   18 //    ****    * *     * *    ****
experimental-genesis   19 //    ****    *** * * **     ***
experimental-genesis   20 //     ****    *********   ******
experimental-genesis   21 //    *******    *****    *******
experimental-genesis   22 //    *********        ****** **
experimental-genesis   23 //     **   ******   ******
experimental-genesis   24 //            **  *******       **
experimental-genesis   25 //    **       *******         ***
experimental-genesis   26 //   ****   ********  ************
experimental-genesis   27 //   ************    ************
experimental-genesis   28 //    ********             *******
experimental-genesis   29 //   ******                   ****
experimental-genesis   30 //    ***                      ***
experimental-genesis   31 // ********************************
experimental-genesis   32 // Copyright (c) 2009-2010 Satoshi Nakamoto
experimental-genesis   33 // Copyright (c) 2009-2012 The Bitcoin developers
experimental-genesis   34 // Distributed under the MIT/X11 software license, see the accompanying
experimental-genesis   35 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
experimental-genesis   36 #include "headers.h"
experimental-genesis   37 #include "checkpoints.h"
experimental-genesis   38 #include "db.h"
experimental-genesis   39 #include "net.h"
experimental-genesis   40 #include "init.h"
experimental-genesis   41 #include <boost/filesystem.hpp>
experimental-genesis   42 #include <boost/filesystem/fstream.hpp>
experimental-genesis   43 
experimental-genesis   44 using namespace std;
experimental-genesis   45 using namespace boost;
experimental-genesis   46 
experimental-genesis   47 //
experimental-genesis   48 // Global state
experimental-genesis   49 //
experimental-genesis   50 
experimental-genesis   51 CCriticalSection cs_setpwalletRegistered;
experimental-genesis   52 set<CWallet*> setpwalletRegistered;
experimental-genesis   53 
experimental-genesis   54 CCriticalSection cs_main;
experimental-genesis   55 
experimental-genesis   56 static map<uint256, CTransaction> mapTransactions;
experimental-genesis   57 CCriticalSection cs_mapTransactions;
experimental-genesis   58 unsigned int nTransactionsUpdated = 0;
experimental-genesis   59 map<COutPoint, CInPoint> mapNextTx;
experimental-genesis   60 
experimental-genesis   61 map<uint256, CBlockIndex*> mapBlockIndex;
experimental-genesis   62 uint256 hashGenesisBlock("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f");
experimental-genesis   63 static CBigNum bnProofOfWorkLimit(~uint256(0) >> 32);
experimental-genesis   64 CBlockIndex* pindexGenesisBlock = NULL;
experimental-genesis   65 int nBestHeight = -1;
experimental-genesis   66 CBigNum bnBestChainWork = 0;
experimental-genesis   67 CBigNum bnBestInvalidWork = 0;
experimental-genesis   68 uint256 hashBestChain = 0;
experimental-genesis   69 CBlockIndex* pindexBest = NULL;
experimental-genesis   70 int64 nTimeBestReceived = 0;
experimental-genesis   71 
experimental-genesis   72 CMedianFilter<int> cPeerBlockCounts(5, 0); // Amount of blocks that other nodes claim to have
experimental-genesis   73 
experimental-genesis   74 map<uint256, CBlock*> mapOrphanBlocks;
experimental-genesis   75 multimap<uint256, CBlock*> mapOrphanBlocksByPrev;
experimental-genesis   76 
experimental-genesis   77 map<uint256, CDataStream*> mapOrphanTransactions;
experimental-genesis   78 multimap<uint256, CDataStream*> mapOrphanTransactionsByPrev;
experimental-genesis   79 
experimental-genesis   80 
experimental-genesis   81 double dHashesPerSec;
experimental-genesis   82 int64 nHPSTimerStart;
experimental-genesis   83 
experimental-genesis   84 // Settings
experimental-genesis   85 int fGenerateBitcoins = false;
experimental-genesis   86 int64 nTransactionFee = 0;
experimental-genesis   87 int fLimitProcessors = false;
experimental-genesis   88 int nLimitProcessors = 1;
experimental-genesis   89 int fMinimizeToTray = true;
experimental-genesis   90 int fMinimizeOnClose = true;
experimental-genesis   91 #if USE_UPNP
experimental-genesis   92 int fUseUPnP = true;
experimental-genesis   93 #else
experimental-genesis   94 int fUseUPnP = false;
experimental-genesis   95 #endif
experimental-genesis   96 
experimental-genesis   97 
experimental-genesis   98 //////////////////////////////////////////////////////////////////////////////
experimental-genesis   99 //
experimental-genesis  100 // dispatching functions
experimental-genesis  101 //
experimental-genesis  102 
experimental-genesis  103 // These functions dispatch to one or all registered wallets
experimental-genesis  104 
experimental-genesis  105 
experimental-genesis  106 void RegisterWallet(CWallet* pwalletIn)
experimental-genesis  107 {
experimental-genesis  108     CRITICAL_BLOCK(cs_setpwalletRegistered)
experimental-genesis  109     {
experimental-genesis  110         setpwalletRegistered.insert(pwalletIn);
experimental-genesis  111     }
experimental-genesis  112 }
experimental-genesis  113 
experimental-genesis  114 void UnregisterWallet(CWallet* pwalletIn)
experimental-genesis  115 {
experimental-genesis  116     CRITICAL_BLOCK(cs_setpwalletRegistered)
experimental-genesis  117     {
experimental-genesis  118         setpwalletRegistered.erase(pwalletIn);
experimental-genesis  119     }
experimental-genesis  120 }
experimental-genesis  121 
experimental-genesis  122 // check whether the passed transaction is from us
experimental-genesis  123 bool static IsFromMe(CTransaction& tx)
experimental-genesis  124 {
experimental-genesis  125     BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
experimental-genesis  126         if (pwallet->IsFromMe(tx))
experimental-genesis  127             return true;
experimental-genesis  128     return false;
experimental-genesis  129 }
experimental-genesis  130 
experimental-genesis  131 // get the wallet transaction with the given hash (if it exists)
experimental-genesis  132 bool static GetTransaction(const uint256& hashTx, CWalletTx& wtx)
experimental-genesis  133 {
experimental-genesis  134     BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
experimental-genesis  135         if (pwallet->GetTransaction(hashTx,wtx))
experimental-genesis  136             return true;
experimental-genesis  137     return false;
experimental-genesis  138 }
experimental-genesis  139 
experimental-genesis  140 // erases transaction with the given hash from all wallets
experimental-genesis  141 void static EraseFromWallets(uint256 hash)
experimental-genesis  142 {
experimental-genesis  143     BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
experimental-genesis  144         pwallet->EraseFromWallet(hash);
experimental-genesis  145 }
experimental-genesis  146 
experimental-genesis  147 // make sure all wallets know about the given transaction, in the given block
experimental-genesis  148 void static SyncWithWallets(const CTransaction& tx, const CBlock* pblock = NULL, bool fUpdate = false)
experimental-genesis  149 {
experimental-genesis  150     BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
experimental-genesis  151         pwallet->AddToWalletIfInvolvingMe(tx, pblock, fUpdate);
experimental-genesis  152 }
experimental-genesis  153 
experimental-genesis  154 // notify wallets about a new best chain
experimental-genesis  155 void static SetBestChain(const CBlockLocator& loc)
experimental-genesis  156 {
experimental-genesis  157     BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
experimental-genesis  158         pwallet->SetBestChain(loc);
experimental-genesis  159 }
experimental-genesis  160 
experimental-genesis  161 // notify wallets about an updated transaction
experimental-genesis  162 void static UpdatedTransaction(const uint256& hashTx)
experimental-genesis  163 {
experimental-genesis  164     BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
experimental-genesis  165         pwallet->UpdatedTransaction(hashTx);
experimental-genesis  166 }
experimental-genesis  167 
experimental-genesis  168 // dump all wallets
experimental-genesis  169 void static PrintWallets(const CBlock& block)
experimental-genesis  170 {
experimental-genesis  171     BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
experimental-genesis  172         pwallet->PrintWallet(block);
experimental-genesis  173 }
experimental-genesis  174 
experimental-genesis  175 // notify wallets about an incoming inventory (for request counts)
experimental-genesis  176 void static Inventory(const uint256& hash)
experimental-genesis  177 {
experimental-genesis  178     BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
experimental-genesis  179         pwallet->Inventory(hash);
experimental-genesis  180 }
experimental-genesis  181 
experimental-genesis  182 // ask wallets to resend their transactions
experimental-genesis  183 void static ResendWalletTransactions()
experimental-genesis  184 {
experimental-genesis  185     BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
experimental-genesis  186         pwallet->ResendWalletTransactions();
experimental-genesis  187 }
experimental-genesis  188 
experimental-genesis  189 
experimental-genesis  190 
experimental-genesis  191 
experimental-genesis  192 
experimental-genesis  193 
experimental-genesis  194 
experimental-genesis  195 //////////////////////////////////////////////////////////////////////////////
experimental-genesis  196 //
experimental-genesis  197 // mapOrphanTransactions
experimental-genesis  198 //
experimental-genesis  199 
experimental-genesis  200 void AddOrphanTx(const CDataStream& vMsg)
experimental-genesis  201 {
experimental-genesis  202     CTransaction tx;
experimental-genesis  203     CDataStream(vMsg) >> tx;
experimental-genesis  204     uint256 hash = tx.GetHash();
experimental-genesis  205     if (mapOrphanTransactions.count(hash))
experimental-genesis  206         return;
experimental-genesis  207 
experimental-genesis  208     CDataStream* pvMsg = mapOrphanTransactions[hash] = new CDataStream(vMsg);
experimental-genesis  209     BOOST_FOREACH(const CTxIn& txin, tx.vin)
experimental-genesis  210         mapOrphanTransactionsByPrev.insert(make_pair(txin.prevout.hash, pvMsg));
experimental-genesis  211 }
experimental-genesis  212 
experimental-genesis  213 void static EraseOrphanTx(uint256 hash)
experimental-genesis  214 {
experimental-genesis  215     if (!mapOrphanTransactions.count(hash))
experimental-genesis  216         return;
experimental-genesis  217     const CDataStream* pvMsg = mapOrphanTransactions[hash];
experimental-genesis  218     CTransaction tx;
experimental-genesis  219     CDataStream(*pvMsg) >> tx;
experimental-genesis  220     BOOST_FOREACH(const CTxIn& txin, tx.vin)
experimental-genesis  221     {
experimental-genesis  222         for (multimap<uint256, CDataStream*>::iterator mi = mapOrphanTransactionsByPrev.lower_bound(txin.prevout.hash);
experimental-genesis  223              mi != mapOrphanTransactionsByPrev.upper_bound(txin.prevout.hash);)
experimental-genesis  224         {
experimental-genesis  225             if ((*mi).second == pvMsg)
experimental-genesis  226                 mapOrphanTransactionsByPrev.erase(mi++);
experimental-genesis  227             else
experimental-genesis  228                 mi++;
experimental-genesis  229         }
experimental-genesis  230     }
experimental-genesis  231     delete pvMsg;
experimental-genesis  232     mapOrphanTransactions.erase(hash);
experimental-genesis  233 }
experimental-genesis  234 
experimental-genesis  235 int LimitOrphanTxSize(int nMaxOrphans)
experimental-genesis  236 {
experimental-genesis  237     int nEvicted = 0;
experimental-genesis  238     while (mapOrphanTransactions.size() > nMaxOrphans)
experimental-genesis  239     {
experimental-genesis  240         // Evict a random orphan:
experimental-genesis  241         std::vector<unsigned char> randbytes(32);
experimental-genesis  242         RAND_bytes(&randbytes[0], 32);
experimental-genesis  243         uint256 randomhash(randbytes);
experimental-genesis  244         map<uint256, CDataStream*>::iterator it = mapOrphanTransactions.lower_bound(randomhash);
experimental-genesis  245         if (it == mapOrphanTransactions.end())
experimental-genesis  246             it = mapOrphanTransactions.begin();
experimental-genesis  247         EraseOrphanTx(it->first);
experimental-genesis  248         ++nEvicted;
experimental-genesis  249     }
experimental-genesis  250     return nEvicted;
experimental-genesis  251 }
experimental-genesis  252 
experimental-genesis  253 
experimental-genesis  254 
experimental-genesis  255 
experimental-genesis  256 
experimental-genesis  257 
experimental-genesis  258 
experimental-genesis  259 //////////////////////////////////////////////////////////////////////////////
experimental-genesis  260 //
experimental-genesis  261 // CTransaction and CTxIndex
experimental-genesis  262 //
experimental-genesis  263 
experimental-genesis  264 bool CTransaction::ReadFromDisk(CTxDB& txdb, COutPoint prevout, CTxIndex& txindexRet)
experimental-genesis  265 {
experimental-genesis  266     SetNull();
experimental-genesis  267     if (!txdb.ReadTxIndex(prevout.hash, txindexRet))
experimental-genesis  268         return false;
experimental-genesis  269     if (!ReadFromDisk(txindexRet.pos))
experimental-genesis  270         return false;
experimental-genesis  271     if (prevout.n >= vout.size())
experimental-genesis  272     {
experimental-genesis  273         SetNull();
experimental-genesis  274         return false;
experimental-genesis  275     }
experimental-genesis  276     return true;
experimental-genesis  277 }
experimental-genesis  278 
experimental-genesis  279 bool CTransaction::ReadFromDisk(CTxDB& txdb, COutPoint prevout)
experimental-genesis  280 {
experimental-genesis  281     CTxIndex txindex;
experimental-genesis  282     return ReadFromDisk(txdb, prevout, txindex);
experimental-genesis  283 }
experimental-genesis  284 
experimental-genesis  285 bool CTransaction::ReadFromDisk(COutPoint prevout)
experimental-genesis  286 {
experimental-genesis  287     CTxDB txdb("r");
experimental-genesis  288     CTxIndex txindex;
experimental-genesis  289     return ReadFromDisk(txdb, prevout, txindex);
experimental-genesis  290 }
experimental-genesis  291 
experimental-genesis  292 
experimental-genesis  293 
experimental-genesis  294 int CMerkleTx::SetMerkleBranch(const CBlock* pblock)
experimental-genesis  295 {
experimental-genesis  296     if (fClient)
experimental-genesis  297     {
experimental-genesis  298         if (hashBlock == 0)
experimental-genesis  299             return 0;
experimental-genesis  300     }
experimental-genesis  301     else
experimental-genesis  302     {
experimental-genesis  303         CBlock blockTmp;
experimental-genesis  304         if (pblock == NULL)
experimental-genesis  305         {
experimental-genesis  306             // Load the block this tx is in
experimental-genesis  307             CTxIndex txindex;
experimental-genesis  308             if (!CTxDB("r").ReadTxIndex(GetHash(), txindex))
experimental-genesis  309                 return 0;
experimental-genesis  310             if (!blockTmp.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos))
experimental-genesis  311                 return 0;
experimental-genesis  312             pblock = &blockTmp;
experimental-genesis  313         }
experimental-genesis  314 
experimental-genesis  315         // Update the tx's hashBlock
experimental-genesis  316         hashBlock = pblock->GetHash();
experimental-genesis  317 
experimental-genesis  318         // Locate the transaction
experimental-genesis  319         for (nIndex = 0; nIndex < pblock->vtx.size(); nIndex++)
experimental-genesis  320             if (pblock->vtx[nIndex] == *(CTransaction*)this)
experimental-genesis  321                 break;
experimental-genesis  322         if (nIndex == pblock->vtx.size())
experimental-genesis  323         {
experimental-genesis  324             vMerkleBranch.clear();
experimental-genesis  325             nIndex = -1;
experimental-genesis  326             printf("ERROR: SetMerkleBranch() : couldn't find tx in block\n");
experimental-genesis  327             return 0;
experimental-genesis  328         }
experimental-genesis  329 
experimental-genesis  330         // Fill in merkle branch
experimental-genesis  331         vMerkleBranch = pblock->GetMerkleBranch(nIndex);
experimental-genesis  332     }
experimental-genesis  333 
experimental-genesis  334     // Is the tx in a block that's in the main chain
experimental-genesis  335     map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
experimental-genesis  336     if (mi == mapBlockIndex.end())
experimental-genesis  337         return 0;
experimental-genesis  338     CBlockIndex* pindex = (*mi).second;
experimental-genesis  339     if (!pindex || !pindex->IsInMainChain())
experimental-genesis  340         return 0;
experimental-genesis  341 
experimental-genesis  342     return pindexBest->nHeight - pindex->nHeight + 1;
experimental-genesis  343 }
experimental-genesis  344 
experimental-genesis  345 
experimental-genesis  346 
experimental-genesis  347 
experimental-genesis  348 
experimental-genesis  349 
experimental-genesis  350 
experimental-genesis  351 bool CTransaction::CheckTransaction() const
experimental-genesis  352 {
experimental-genesis  353     // Basic checks that don't depend on any context
experimental-genesis  354     if (vin.empty())
experimental-genesis  355         return DoS(10, error("CTransaction::CheckTransaction() : vin empty"));
experimental-genesis  356     if (vout.empty())
experimental-genesis  357         return DoS(10, error("CTransaction::CheckTransaction() : vout empty"));
experimental-genesis  358     // Size limits
experimental-genesis  359     if (::GetSerializeSize(*this, SER_NETWORK) > MAX_BLOCK_SIZE)
experimental-genesis  360         return DoS(100, error("CTransaction::CheckTransaction() : size limits failed"));
experimental-genesis  361 
experimental-genesis  362     // Check for negative or overflow output values
experimental-genesis  363     int64 nValueOut = 0;
experimental-genesis  364     BOOST_FOREACH(const CTxOut& txout, vout)
experimental-genesis  365     {
experimental-genesis  366         if (txout.nValue < 0)
experimental-genesis  367             return DoS(100, error("CTransaction::CheckTransaction() : txout.nValue negative"));
experimental-genesis  368         if (txout.nValue > MAX_MONEY)
experimental-genesis  369             return DoS(100, error("CTransaction::CheckTransaction() : txout.nValue too high"));
experimental-genesis  370         nValueOut += txout.nValue;
experimental-genesis  371         if (!MoneyRange(nValueOut))
experimental-genesis  372             return DoS(100, error("CTransaction::CheckTransaction() : txout total out of range"));
experimental-genesis  373     }
experimental-genesis  374 
experimental-genesis  375     // Check for duplicate inputs
experimental-genesis  376     set<COutPoint> vInOutPoints;
experimental-genesis  377     BOOST_FOREACH(const CTxIn& txin, vin)
experimental-genesis  378     {
experimental-genesis  379         if (vInOutPoints.count(txin.prevout))
experimental-genesis  380             return false;
experimental-genesis  381         vInOutPoints.insert(txin.prevout);
experimental-genesis  382     }
experimental-genesis  383 
experimental-genesis  384     if (IsCoinBase())
experimental-genesis  385     {
experimental-genesis  386         if (vin[0].scriptSig.size() < 2 || vin[0].scriptSig.size() > 100)
experimental-genesis  387             return DoS(100, error("CTransaction::CheckTransaction() : coinbase script size"));
experimental-genesis  388     }
experimental-genesis  389     else
experimental-genesis  390     {
experimental-genesis  391         BOOST_FOREACH(const CTxIn& txin, vin)
experimental-genesis  392             if (txin.prevout.IsNull())
experimental-genesis  393                 return DoS(10, error("CTransaction::CheckTransaction() : prevout is null"));
experimental-genesis  394     }
experimental-genesis  395 
experimental-genesis  396     return true;
experimental-genesis  397 }
experimental-genesis  398 
experimental-genesis  399 bool CTransaction::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs, bool* pfMissingInputs)
experimental-genesis  400 {
experimental-genesis  401     if (pfMissingInputs)
experimental-genesis  402         *pfMissingInputs = false;
experimental-genesis  403 
experimental-genesis  404     if (!CheckTransaction())
experimental-genesis  405         return error("AcceptToMemoryPool() : CheckTransaction failed");
experimental-genesis  406 
experimental-genesis  407     // Coinbase is only valid in a block, not as a loose transaction
experimental-genesis  408     if (IsCoinBase())
experimental-genesis  409         return DoS(100, error("AcceptToMemoryPool() : coinbase as individual tx"));
experimental-genesis  410 
experimental-genesis  411     // To help v0.1.5 clients who would see it as a negative number
experimental-genesis  412     if ((int64)nLockTime > INT_MAX)
experimental-genesis  413         return error("AcceptToMemoryPool() : not accepting nLockTime beyond 2038 yet");
experimental-genesis  414 
experimental-genesis  415     // Safety limits
experimental-genesis  416     unsigned int nSize = ::GetSerializeSize(*this, SER_NETWORK);
experimental-genesis  417     // Checking ECDSA signatures is a CPU bottleneck, so to avoid denial-of-service
experimental-genesis  418     // attacks disallow transactions with more than one SigOp per 34 bytes.
experimental-genesis  419     // 34 bytes because a TxOut is:
experimental-genesis  420     //   20-byte address + 8 byte bitcoin amount + 5 bytes of ops + 1 byte script length
experimental-genesis  421     if (GetSigOpCount() > nSize / 34 || nSize < 100)
experimental-genesis  422         return error("AcceptToMemoryPool() : transaction with out-of-bounds SigOpCount");
experimental-genesis  423 
experimental-genesis  424     // Rather not work on nonstandard transactions (unless -testnet)
experimental-genesis  425     if (!fTestNet && !IsStandard())
experimental-genesis  426         return error("AcceptToMemoryPool() : nonstandard transaction type");
experimental-genesis  427 
experimental-genesis  428     // Do we already have it?
experimental-genesis  429     uint256 hash = GetHash();
experimental-genesis  430     CRITICAL_BLOCK(cs_mapTransactions)
experimental-genesis  431         if (mapTransactions.count(hash))
experimental-genesis  432             return false;
experimental-genesis  433     if (fCheckInputs)
experimental-genesis  434         if (txdb.ContainsTx(hash))
experimental-genesis  435             return false;
experimental-genesis  436 
experimental-genesis  437     // Check for conflicts with in-memory transactions
experimental-genesis  438     CTransaction* ptxOld = NULL;
experimental-genesis  439     for (int i = 0; i < vin.size(); i++)
experimental-genesis  440     {
experimental-genesis  441         COutPoint outpoint = vin[i].prevout;
experimental-genesis  442         if (mapNextTx.count(outpoint))
experimental-genesis  443         {
experimental-genesis  444             // Disable replacement feature for now
experimental-genesis  445             return false;
experimental-genesis  446 
experimental-genesis  447             // Allow replacing with a newer version of the same transaction
experimental-genesis  448             if (i != 0)
experimental-genesis  449                 return false;
experimental-genesis  450             ptxOld = mapNextTx[outpoint].ptx;
experimental-genesis  451             if (ptxOld->IsFinal())
experimental-genesis  452                 return false;
experimental-genesis  453             if (!IsNewerThan(*ptxOld))
experimental-genesis  454                 return false;
experimental-genesis  455             for (int i = 0; i < vin.size(); i++)
experimental-genesis  456             {
experimental-genesis  457                 COutPoint outpoint = vin[i].prevout;
experimental-genesis  458                 if (!mapNextTx.count(outpoint) || mapNextTx[outpoint].ptx != ptxOld)
experimental-genesis  459                     return false;
experimental-genesis  460             }
experimental-genesis  461             break;
experimental-genesis  462         }
experimental-genesis  463     }
experimental-genesis  464 
experimental-genesis  465     if (fCheckInputs)
experimental-genesis  466     {
experimental-genesis  467         // Check against previous transactions
experimental-genesis  468         map<uint256, CTxIndex> mapUnused;
experimental-genesis  469         int64 nFees = 0;
experimental-genesis  470         bool fInvalid = false;
experimental-genesis  471         if (!ConnectInputs(txdb, mapUnused, CDiskTxPos(1,1,1), pindexBest, nFees, false, false, 0, fInvalid))
experimental-genesis  472         {
experimental-genesis  473             if (fInvalid)
experimental-genesis  474                 return error("AcceptToMemoryPool() : FetchInputs found invalid tx %s", hash.ToString().substr(0,10).c_str());
experimental-genesis  475             return error("AcceptToMemoryPool() : ConnectInputs failed %s", hash.ToString().substr(0,10).c_str());
experimental-genesis  476         }
experimental-genesis  477 
experimental-genesis  478         // Don't accept it if it can't get into a block
experimental-genesis  479         if (nFees < GetMinFee(1000, true, true))
experimental-genesis  480             return error("AcceptToMemoryPool() : not enough fees");
experimental-genesis  481 
experimental-genesis  482         // Continuously rate-limit free transactions
experimental-genesis  483         // This mitigates 'penny-flooding' -- sending thousands of free transactions just to
experimental-genesis  484         // be annoying or make other's transactions take longer to confirm.
experimental-genesis  485         if (nFees < MIN_RELAY_TX_FEE)
experimental-genesis  486         {
experimental-genesis  487             static CCriticalSection cs;
experimental-genesis  488             static double dFreeCount;
experimental-genesis  489             static int64 nLastTime;
experimental-genesis  490             int64 nNow = GetTime();
experimental-genesis  491 
experimental-genesis  492             CRITICAL_BLOCK(cs)
experimental-genesis  493             {
experimental-genesis  494                 // Use an exponentially decaying ~10-minute window:
experimental-genesis  495                 dFreeCount *= pow(1.0 - 1.0/600.0, (double)(nNow - nLastTime));
experimental-genesis  496                 nLastTime = nNow;
experimental-genesis  497                 // -limitfreerelay unit is thousand-bytes-per-minute
experimental-genesis  498                 // At default rate it would take over a month to fill 1GB
experimental-genesis  499                 if (dFreeCount > GetArg("-limitfreerelay", 15)*10*1000 && !IsFromMe(*this))
experimental-genesis  500                     return error("AcceptToMemoryPool() : free transaction rejected by rate limiter");
experimental-genesis  501                 if (fDebug)
experimental-genesis  502                     printf("Rate limit dFreeCount: %g => %g\n", dFreeCount, dFreeCount+nSize);
experimental-genesis  503                 dFreeCount += nSize;
experimental-genesis  504             }
experimental-genesis  505         }
experimental-genesis  506     }
experimental-genesis  507 
experimental-genesis  508     // Store transaction in memory
experimental-genesis  509     CRITICAL_BLOCK(cs_mapTransactions)
experimental-genesis  510     {
experimental-genesis  511         if (ptxOld)
experimental-genesis  512         {
experimental-genesis  513             printf("AcceptToMemoryPool() : replacing tx %s with new version\n", ptxOld->GetHash().ToString().c_str());
experimental-genesis  514             ptxOld->RemoveFromMemoryPool();
experimental-genesis  515         }
experimental-genesis  516         AddToMemoryPoolUnchecked();
experimental-genesis  517     }
experimental-genesis  518 
experimental-genesis  519     ///// are we sure this is ok when loading transactions or restoring block txes
experimental-genesis  520     // If updated, erase old tx from wallet
experimental-genesis  521     if (ptxOld)
experimental-genesis  522         EraseFromWallets(ptxOld->GetHash());
experimental-genesis  523 
experimental-genesis  524     printf("AcceptToMemoryPool(): accepted %s\n", hash.ToString().substr(0,10).c_str());
experimental-genesis  525     return true;
experimental-genesis  526 }
experimental-genesis  527 
experimental-genesis  528 bool CTransaction::AcceptToMemoryPool(bool fCheckInputs, bool* pfMissingInputs)
experimental-genesis  529 {
experimental-genesis  530     CTxDB txdb("r");
experimental-genesis  531     return AcceptToMemoryPool(txdb, fCheckInputs, pfMissingInputs);
experimental-genesis  532 }
experimental-genesis  533 
experimental-genesis  534 bool CTransaction::AddToMemoryPoolUnchecked()
experimental-genesis  535 {
experimental-genesis  536     // Add to memory pool without checking anything.  Don't call this directly,
experimental-genesis  537     // call AcceptToMemoryPool to properly check the transaction first.
experimental-genesis  538     CRITICAL_BLOCK(cs_mapTransactions)
experimental-genesis  539     {
experimental-genesis  540         uint256 hash = GetHash();
experimental-genesis  541         mapTransactions[hash] = *this;
experimental-genesis  542         for (int i = 0; i < vin.size(); i++)
experimental-genesis  543             mapNextTx[vin[i].prevout] = CInPoint(&mapTransactions[hash], i);
experimental-genesis  544         nTransactionsUpdated++;
experimental-genesis  545     }
experimental-genesis  546     return true;
experimental-genesis  547 }
experimental-genesis  548 
experimental-genesis  549 
experimental-genesis  550 bool CTransaction::RemoveFromMemoryPool()
experimental-genesis  551 {
experimental-genesis  552     // Remove transaction from memory pool
experimental-genesis  553     CRITICAL_BLOCK(cs_mapTransactions)
experimental-genesis  554     {
experimental-genesis  555         BOOST_FOREACH(const CTxIn& txin, vin)
experimental-genesis  556             mapNextTx.erase(txin.prevout);
experimental-genesis  557         mapTransactions.erase(GetHash());
experimental-genesis  558         nTransactionsUpdated++;
experimental-genesis  559     }
experimental-genesis  560     return true;
experimental-genesis  561 }
experimental-genesis  562 
experimental-genesis  563 
experimental-genesis  564 
experimental-genesis  565 
experimental-genesis  566 
experimental-genesis  567 
experimental-genesis  568 int CMerkleTx::GetDepthInMainChain(int& nHeightRet) const
experimental-genesis  569 {
experimental-genesis  570     if (hashBlock == 0 || nIndex == -1)
experimental-genesis  571         return 0;
experimental-genesis  572 
experimental-genesis  573     // Find the block it claims to be in
experimental-genesis  574     map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
experimental-genesis  575     if (mi == mapBlockIndex.end())
experimental-genesis  576         return 0;
experimental-genesis  577     CBlockIndex* pindex = (*mi).second;
experimental-genesis  578     if (!pindex || !pindex->IsInMainChain())
experimental-genesis  579         return 0;
experimental-genesis  580 
experimental-genesis  581     // Make sure the merkle branch connects to this block
experimental-genesis  582     if (!fMerkleVerified)
experimental-genesis  583     {
experimental-genesis  584         if (CBlock::CheckMerkleBranch(GetHash(), vMerkleBranch, nIndex) != pindex->hashMerkleRoot)
experimental-genesis  585             return 0;
experimental-genesis  586         fMerkleVerified = true;
experimental-genesis  587     }
experimental-genesis  588 
experimental-genesis  589     nHeightRet = pindex->nHeight;
experimental-genesis  590     return pindexBest->nHeight - pindex->nHeight + 1;
experimental-genesis  591 }
experimental-genesis  592 
experimental-genesis  593 
experimental-genesis  594 int CMerkleTx::GetBlocksToMaturity() const
experimental-genesis  595 {
experimental-genesis  596     if (!IsCoinBase())
experimental-genesis  597         return 0;
experimental-genesis  598     return max(0, (COINBASE_MATURITY+20) - GetDepthInMainChain());
experimental-genesis  599 }
experimental-genesis  600 
experimental-genesis  601 
experimental-genesis  602 bool CMerkleTx::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs)
experimental-genesis  603 {
experimental-genesis  604     if (fClient)
experimental-genesis  605     {
experimental-genesis  606         if (!IsInMainChain() && !ClientConnectInputs())
experimental-genesis  607             return false;
experimental-genesis  608         return CTransaction::AcceptToMemoryPool(txdb, false);
experimental-genesis  609     }
experimental-genesis  610     else
experimental-genesis  611     {
experimental-genesis  612         return CTransaction::AcceptToMemoryPool(txdb, fCheckInputs);
experimental-genesis  613     }
experimental-genesis  614 }
experimental-genesis  615 
experimental-genesis  616 bool CMerkleTx::AcceptToMemoryPool()
experimental-genesis  617 {
experimental-genesis  618     CTxDB txdb("r");
experimental-genesis  619     return AcceptToMemoryPool(txdb);
experimental-genesis  620 }
experimental-genesis  621 
experimental-genesis  622 
experimental-genesis  623 
experimental-genesis  624 bool CWalletTx::AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs)
experimental-genesis  625 {
experimental-genesis  626     CRITICAL_BLOCK(cs_mapTransactions)
experimental-genesis  627     {
experimental-genesis  628         // Add previous supporting transactions first
experimental-genesis  629         BOOST_FOREACH(CMerkleTx& tx, vtxPrev)
experimental-genesis  630         {
experimental-genesis  631             if (!tx.IsCoinBase())
experimental-genesis  632             {
experimental-genesis  633                 uint256 hash = tx.GetHash();
experimental-genesis  634                 if (!mapTransactions.count(hash) && !txdb.ContainsTx(hash))
experimental-genesis  635                     tx.AcceptToMemoryPool(txdb, fCheckInputs);
experimental-genesis  636             }
experimental-genesis  637         }
experimental-genesis  638         return AcceptToMemoryPool(txdb, fCheckInputs);
experimental-genesis  639     }
experimental-genesis  640     return false;
experimental-genesis  641 }
experimental-genesis  642 
experimental-genesis  643 bool CWalletTx::AcceptWalletTransaction() 
experimental-genesis  644 {
experimental-genesis  645     CTxDB txdb("r");
experimental-genesis  646     return AcceptWalletTransaction(txdb);
experimental-genesis  647 }
experimental-genesis  648 
experimental-genesis  649 int CTxIndex::GetDepthInMainChain() const
experimental-genesis  650 {
experimental-genesis  651     // Read block header
experimental-genesis  652     CBlock block;
experimental-genesis  653     if (!block.ReadFromDisk(pos.nFile, pos.nBlockPos, false))
experimental-genesis  654         return 0;
experimental-genesis  655     // Find the block in the index
experimental-genesis  656     map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(block.GetHash());
experimental-genesis  657     if (mi == mapBlockIndex.end())
experimental-genesis  658         return 0;
experimental-genesis  659     CBlockIndex* pindex = (*mi).second;
experimental-genesis  660     if (!pindex || !pindex->IsInMainChain())
experimental-genesis  661         return 0;
experimental-genesis  662     return 1 + nBestHeight - pindex->nHeight;
experimental-genesis  663 }
experimental-genesis  664 
experimental-genesis  665 
experimental-genesis  666 
experimental-genesis  667 
experimental-genesis  668 
experimental-genesis  669 
experimental-genesis  670 
experimental-genesis  671 
experimental-genesis  672 
experimental-genesis  673 
experimental-genesis  674 //////////////////////////////////////////////////////////////////////////////
experimental-genesis  675 //
experimental-genesis  676 // CBlock and CBlockIndex
experimental-genesis  677 //
experimental-genesis  678 
experimental-genesis  679 bool CBlock::ReadFromDisk(const CBlockIndex* pindex, bool fReadTransactions)
experimental-genesis  680 {
experimental-genesis  681     if (!fReadTransactions)
experimental-genesis  682     {
experimental-genesis  683         *this = pindex->GetBlockHeader();
experimental-genesis  684         return true;
experimental-genesis  685     }
experimental-genesis  686     if (!ReadFromDisk(pindex->nFile, pindex->nBlockPos, fReadTransactions))
experimental-genesis  687         return false;
experimental-genesis  688     if (GetHash() != pindex->GetBlockHash())
experimental-genesis  689         return error("CBlock::ReadFromDisk() : GetHash() doesn't match index");
experimental-genesis  690     return true;
experimental-genesis  691 }
experimental-genesis  692 
experimental-genesis  693 uint256 static GetOrphanRoot(const CBlock* pblock)
experimental-genesis  694 {
experimental-genesis  695     // Work back to the first block in the orphan chain
experimental-genesis  696     while (mapOrphanBlocks.count(pblock->hashPrevBlock))
experimental-genesis  697         pblock = mapOrphanBlocks[pblock->hashPrevBlock];
experimental-genesis  698     return pblock->GetHash();
experimental-genesis  699 }
experimental-genesis  700 
experimental-genesis  701 int64 static GetBlockValue(int nHeight, int64 nFees)
experimental-genesis  702 {
experimental-genesis  703     int64 nSubsidy = 50 * COIN;
experimental-genesis  704 
experimental-genesis  705     // Subsidy is cut in half every 4 years
experimental-genesis  706     nSubsidy >>= (nHeight / 210000);
experimental-genesis  707 
experimental-genesis  708     return nSubsidy + nFees;
experimental-genesis  709 }
experimental-genesis  710 
experimental-genesis  711 static const int64 nTargetTimespan = 14 * 24 * 60 * 60; // two weeks
experimental-genesis  712 static const int64 nTargetSpacing = 10 * 60;
experimental-genesis  713 static const int64 nInterval = nTargetTimespan / nTargetSpacing;
experimental-genesis  714 
experimental-genesis  715 //
experimental-genesis  716 // minimum amount of work that could possibly be required nTime after
experimental-genesis  717 // minimum work required was nBase
experimental-genesis  718 //
experimental-genesis  719 unsigned int ComputeMinWork(unsigned int nBase, int64 nTime)
experimental-genesis  720 {
experimental-genesis  721     // Testnet has min-difficulty blocks
experimental-genesis  722     // after nTargetSpacing*2 time between blocks:
experimental-genesis  723     if (fTestNet && nTime > nTargetSpacing*2)
experimental-genesis  724         return bnProofOfWorkLimit.GetCompact();
experimental-genesis  725 
experimental-genesis  726     CBigNum bnResult;
experimental-genesis  727     bnResult.SetCompact(nBase);
experimental-genesis  728     while (nTime > 0 && bnResult < bnProofOfWorkLimit)
experimental-genesis  729     {
experimental-genesis  730         // Maximum 400% adjustment...
experimental-genesis  731         bnResult *= 4;
experimental-genesis  732         // ... in best-case exactly 4-times-normal target time
experimental-genesis  733         nTime -= nTargetTimespan*4;
experimental-genesis  734     }
experimental-genesis  735     if (bnResult > bnProofOfWorkLimit)
experimental-genesis  736         bnResult = bnProofOfWorkLimit;
experimental-genesis  737     return bnResult.GetCompact();
experimental-genesis  738 }
experimental-genesis  739 
experimental-genesis  740 unsigned int static GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlock *pblock)
experimental-genesis  741 {
experimental-genesis  742     unsigned int nProofOfWorkLimit = bnProofOfWorkLimit.GetCompact();
experimental-genesis  743 
experimental-genesis  744     // Genesis block
experimental-genesis  745     if (pindexLast == NULL)
experimental-genesis  746         return nProofOfWorkLimit;
experimental-genesis  747 
experimental-genesis  748     // Only change once per interval
experimental-genesis  749     if ((pindexLast->nHeight+1) % nInterval != 0)
experimental-genesis  750     {
experimental-genesis  751         // Special rules for testnet after 15 Feb 2012:
experimental-genesis  752         if (fTestNet && pblock->nTime > 1329264000)
experimental-genesis  753         {
experimental-genesis  754             // If the new block's timestamp is more than 2* 10 minutes
experimental-genesis  755             // then allow mining of a min-difficulty block.
experimental-genesis  756             if (pblock->nTime - pindexLast->nTime > nTargetSpacing*2)
experimental-genesis  757                 return nProofOfWorkLimit;
experimental-genesis  758             else
experimental-genesis  759             {
experimental-genesis  760                 // Return the last non-special-min-difficulty-rules-block
experimental-genesis  761                 const CBlockIndex* pindex = pindexLast;
experimental-genesis  762                 while (pindex->pprev && pindex->nHeight % nInterval != 0 && pindex->nBits == nProofOfWorkLimit)
experimental-genesis  763                     pindex = pindex->pprev;
experimental-genesis  764                 return pindex->nBits;
experimental-genesis  765             }
experimental-genesis  766         }
experimental-genesis  767 
experimental-genesis  768         return pindexLast->nBits;
experimental-genesis  769     }
experimental-genesis  770 
experimental-genesis  771     // Go back by what we want to be 14 days worth of blocks
experimental-genesis  772     const CBlockIndex* pindexFirst = pindexLast;
experimental-genesis  773     for (int i = 0; pindexFirst && i < nInterval-1; i++)
experimental-genesis  774         pindexFirst = pindexFirst->pprev;
experimental-genesis  775     assert(pindexFirst);
experimental-genesis  776 
experimental-genesis  777     // Limit adjustment step
experimental-genesis  778     int64 nActualTimespan = pindexLast->GetBlockTime() - pindexFirst->GetBlockTime();
experimental-genesis  779     printf("  nActualTimespan = %"PRI64d"  before bounds\n", nActualTimespan);
experimental-genesis  780     if (nActualTimespan < nTargetTimespan/4)
experimental-genesis  781         nActualTimespan = nTargetTimespan/4;
experimental-genesis  782     if (nActualTimespan > nTargetTimespan*4)
experimental-genesis  783         nActualTimespan = nTargetTimespan*4;
experimental-genesis  784 
experimental-genesis  785     // Retarget
experimental-genesis  786     CBigNum bnNew;
experimental-genesis  787     bnNew.SetCompact(pindexLast->nBits);
experimental-genesis  788     bnNew *= nActualTimespan;
experimental-genesis  789     bnNew /= nTargetTimespan;
experimental-genesis  790 
experimental-genesis  791     if (bnNew > bnProofOfWorkLimit)
experimental-genesis  792         bnNew = bnProofOfWorkLimit;
experimental-genesis  793 
experimental-genesis  794     /// debug print
experimental-genesis  795     printf("GetNextWorkRequired RETARGET\n");
experimental-genesis  796     printf("nTargetTimespan = %"PRI64d"    nActualTimespan = %"PRI64d"\n", nTargetTimespan, nActualTimespan);
experimental-genesis  797     printf("Before: %08x  %s\n", pindexLast->nBits, CBigNum().SetCompact(pindexLast->nBits).getuint256().ToString().c_str());
experimental-genesis  798     printf("After:  %08x  %s\n", bnNew.GetCompact(), bnNew.getuint256().ToString().c_str());
experimental-genesis  799 
experimental-genesis  800     return bnNew.GetCompact();
experimental-genesis  801 }
experimental-genesis  802 
experimental-genesis  803 bool CheckProofOfWork(uint256 hash, unsigned int nBits)
experimental-genesis  804 {
experimental-genesis  805     CBigNum bnTarget;
experimental-genesis  806     bnTarget.SetCompact(nBits);
experimental-genesis  807 
experimental-genesis  808     // Check range
experimental-genesis  809     if (bnTarget <= 0 || bnTarget > bnProofOfWorkLimit)
experimental-genesis  810         return error("CheckProofOfWork() : nBits below minimum work");
experimental-genesis  811 
experimental-genesis  812     // Check proof of work matches claimed amount
experimental-genesis  813     if (hash > bnTarget.getuint256())
experimental-genesis  814         return error("CheckProofOfWork() : hash doesn't match nBits");
experimental-genesis  815 
experimental-genesis  816     return true;
experimental-genesis  817 }
experimental-genesis  818 
experimental-genesis  819 // Return maximum amount of blocks that other nodes claim to have
experimental-genesis  820 int GetNumBlocksOfPeers()
experimental-genesis  821 {
experimental-genesis  822     return std::max(cPeerBlockCounts.median(), Checkpoints::GetTotalBlocksEstimate());
experimental-genesis  823 }
experimental-genesis  824 
experimental-genesis  825 bool IsInitialBlockDownload()
experimental-genesis  826 {
experimental-genesis  827     if (pindexBest == NULL || nBestHeight < Checkpoints::GetTotalBlocksEstimate())
experimental-genesis  828         return true;
experimental-genesis  829     static int64 nLastUpdate;
experimental-genesis  830     static CBlockIndex* pindexLastBest;
experimental-genesis  831     if (pindexBest != pindexLastBest)
experimental-genesis  832     {
experimental-genesis  833         pindexLastBest = pindexBest;
experimental-genesis  834         nLastUpdate = GetTime();
experimental-genesis  835     }
experimental-genesis  836     return (GetTime() - nLastUpdate < 10 &&
experimental-genesis  837             pindexBest->GetBlockTime() < GetTime() - 24 * 60 * 60);
experimental-genesis  838 }
experimental-genesis  839 
experimental-genesis  840 void static InvalidChainFound(CBlockIndex* pindexNew)
experimental-genesis  841 {
experimental-genesis  842     if (pindexNew->bnChainWork > bnBestInvalidWork)
experimental-genesis  843     {
experimental-genesis  844         bnBestInvalidWork = pindexNew->bnChainWork;
experimental-genesis  845         CTxDB().WriteBestInvalidWork(bnBestInvalidWork);
experimental-genesis  846         MainFrameRepaint();
experimental-genesis  847     }
experimental-genesis  848     printf("InvalidChainFound: invalid block=%s  height=%d  work=%s\n", pindexNew->GetBlockHash().ToString().substr(0,20).c_str(), pindexNew->nHeight, pindexNew->bnChainWork.ToString().c_str());
experimental-genesis  849     printf("InvalidChainFound:  current best=%s  height=%d  work=%s\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());
experimental-genesis  850     if (pindexBest && bnBestInvalidWork > bnBestChainWork + pindexBest->GetBlockWork() * 6)
experimental-genesis  851         printf("InvalidChainFound: WARNING: Displayed transactions may not be correct!  You may need to upgrade, or other nodes may need to upgrade.\n");
experimental-genesis  852 }
experimental-genesis  853 
experimental-genesis  854 
experimental-genesis  855 
experimental-genesis  856 
experimental-genesis  857 
experimental-genesis  858 
experimental-genesis  859 
experimental-genesis  860 
experimental-genesis  861 
experimental-genesis  862 
experimental-genesis  863 
experimental-genesis  864 bool CTransaction::DisconnectInputs(CTxDB& txdb)
experimental-genesis  865 {
experimental-genesis  866     // Relinquish previous transactions' spent pointers
experimental-genesis  867     if (!IsCoinBase())
experimental-genesis  868     {
experimental-genesis  869         BOOST_FOREACH(const CTxIn& txin, vin)
experimental-genesis  870         {
experimental-genesis  871             COutPoint prevout = txin.prevout;
experimental-genesis  872 
experimental-genesis  873             // Get prev txindex from disk
experimental-genesis  874             CTxIndex txindex;
experimental-genesis  875             if (!txdb.ReadTxIndex(prevout.hash, txindex))
experimental-genesis  876                 return error("DisconnectInputs() : ReadTxIndex failed");
experimental-genesis  877 
experimental-genesis  878             if (prevout.n >= txindex.vSpent.size())
experimental-genesis  879                 return error("DisconnectInputs() : prevout.n out of range");
experimental-genesis  880 
experimental-genesis  881             // Mark outpoint as not spent
experimental-genesis  882             txindex.vSpent[prevout.n].SetNull();
experimental-genesis  883 
experimental-genesis  884             // Write back
experimental-genesis  885             if (!txdb.UpdateTxIndex(prevout.hash, txindex))
experimental-genesis  886                 return error("DisconnectInputs() : UpdateTxIndex failed");
experimental-genesis  887         }
experimental-genesis  888     }
experimental-genesis  889 
experimental-genesis  890     // Remove transaction from index
experimental-genesis  891     // This can fail if a duplicate of this transaction was in a chain that got
experimental-genesis  892     // reorganized away. This is only possible if this transaction was completely
experimental-genesis  893     // spent, so erasing it would be a no-op anway.
experimental-genesis  894     txdb.EraseTxIndex(*this);
experimental-genesis  895 
experimental-genesis  896     return true;
experimental-genesis  897 }
experimental-genesis  898 
experimental-genesis  899 
experimental-genesis  900 bool CTransaction::ConnectInputs(CTxDB& txdb, map<uint256, CTxIndex>& mapTestPool, CDiskTxPos posThisTx,
experimental-genesis  901                                  CBlockIndex* pindexBlock, int64& nFees, bool fBlock, bool fMiner, int64 nMinFee,
experimental-genesis  902                                  bool& fInvalid)
experimental-genesis  903 {
experimental-genesis  904     // FetchInputs can return false either because we just haven't seen some inputs
experimental-genesis  905     // (in which case the transaction should be stored as an orphan)
experimental-genesis  906     // or because the transaction is malformed (in which case the transaction should
experimental-genesis  907     // be dropped).  If tx is definitely invalid, fInvalid will be set to true.
experimental-genesis  908     fInvalid = false;
experimental-genesis  909 
experimental-genesis  910     // Take over previous transactions' spent pointers
experimental-genesis  911     // fBlock is true when this is called from AcceptBlock when a new best-block is added to the blockchain
experimental-genesis  912     // fMiner is true when called from the internal bitcoin miner
experimental-genesis  913     // ... both are false when called from CTransaction::AcceptToMemoryPool
experimental-genesis  914     if (!IsCoinBase())
experimental-genesis  915     {
experimental-genesis  916         int64 nValueIn = 0;
experimental-genesis  917         for (int i = 0; i < vin.size(); i++)
experimental-genesis  918         {
experimental-genesis  919             COutPoint prevout = vin[i].prevout;
experimental-genesis  920 
experimental-genesis  921             // Read txindex
experimental-genesis  922             CTxIndex txindex;
experimental-genesis  923             bool fFound = true;
experimental-genesis  924             if ((fBlock || fMiner) && mapTestPool.count(prevout.hash))
experimental-genesis  925             {
experimental-genesis  926                 // Get txindex from current proposed changes
experimental-genesis  927                 txindex = mapTestPool[prevout.hash];
experimental-genesis  928             }
experimental-genesis  929             else
experimental-genesis  930             {
experimental-genesis  931                 // Read txindex from txdb
experimental-genesis  932                 fFound = txdb.ReadTxIndex(prevout.hash, txindex);
experimental-genesis  933             }
experimental-genesis  934             if (!fFound && (fBlock || fMiner))
experimental-genesis  935                 return fMiner ? false : error("ConnectInputs() : %s prev tx %s index entry not found", GetHash().ToString().substr(0,10).c_str(),  prevout.hash.ToString().substr(0,10).c_str());
experimental-genesis  936 
experimental-genesis  937             // Read txPrev
experimental-genesis  938             CTransaction txPrev;
experimental-genesis  939             if (!fFound || txindex.pos == CDiskTxPos(1,1,1))
experimental-genesis  940             {
experimental-genesis  941                 // Get prev tx from single transactions in memory
experimental-genesis  942                 CRITICAL_BLOCK(cs_mapTransactions)
experimental-genesis  943                 {
experimental-genesis  944                     if (!mapTransactions.count(prevout.hash))
experimental-genesis  945                         return error("ConnectInputs() : %s mapTransactions prev not found %s", GetHash().ToString().substr(0,10).c_str(),  prevout.hash.ToString().substr(0,10).c_str());
experimental-genesis  946                     txPrev = mapTransactions[prevout.hash];
experimental-genesis  947                 }
experimental-genesis  948                 if (!fFound)
experimental-genesis  949                     txindex.vSpent.resize(txPrev.vout.size());
experimental-genesis  950             }
experimental-genesis  951             else
experimental-genesis  952             {
experimental-genesis  953                 // Get prev tx from disk
experimental-genesis  954                 if (!txPrev.ReadFromDisk(txindex.pos))
experimental-genesis  955                     return error("ConnectInputs() : %s ReadFromDisk prev tx %s failed", GetHash().ToString().substr(0,10).c_str(),  prevout.hash.ToString().substr(0,10).c_str());
experimental-genesis  956             }
experimental-genesis  957 
experimental-genesis  958             if (prevout.n >= txPrev.vout.size() || prevout.n >= txindex.vSpent.size())
experimental-genesis  959             {
experimental-genesis  960                 // Revisit this if/when transaction replacement is implemented and allows
experimental-genesis  961                 // adding inputs:
experimental-genesis  962                 fInvalid = true;
experimental-genesis  963                 return DoS(100, error("ConnectInputs() : %s prevout.n out of range %d %d %d prev tx %s\n%s", GetHash().ToString().substr(0,10).c_str(), prevout.n, txPrev.vout.size(), txindex.vSpent.size(), prevout.hash.ToString().substr(0,10).c_str(), txPrev.ToString().c_str()));
experimental-genesis  964             }
experimental-genesis  965 
experimental-genesis  966             // If prev is coinbase, check that it's matured
experimental-genesis  967             if (txPrev.IsCoinBase())
experimental-genesis  968                 for (CBlockIndex* pindex = pindexBlock; pindex && pindexBlock->nHeight - pindex->nHeight < COINBASE_MATURITY; pindex = pindex->pprev)
experimental-genesis  969                     if (pindex->nBlockPos == txindex.pos.nBlockPos && pindex->nFile == txindex.pos.nFile)
experimental-genesis  970                         return error("ConnectInputs() : tried to spend coinbase at depth %d", pindexBlock->nHeight - pindex->nHeight);
experimental-genesis  971 
experimental-genesis  972             // Skip ECDSA signature verification when connecting blocks (fBlock=true)
experimental-genesis  973             // before the last blockchain checkpoint. This is safe because block merkle hashes are
experimental-genesis  974             // still computed and checked, and any change will be caught at the next checkpoint.
experimental-genesis  975             if (!(fBlock && (nBestHeight < Checkpoints::GetTotalBlocksEstimate())))
experimental-genesis  976                 // Verify signature
experimental-genesis  977                 if (!VerifySignature(txPrev, *this, i))
experimental-genesis  978                     return DoS(100,error("ConnectInputs() : %s VerifySignature failed", GetHash().ToString().substr(0,10).c_str()));
experimental-genesis  979 
experimental-genesis  980             // Check for conflicts (double-spend)
experimental-genesis  981             // This doesn't trigger the DoS code on purpose; if it did, it would make it easier
experimental-genesis  982             // for an attacker to attempt to split the network.
experimental-genesis  983             if (!txindex.vSpent[prevout.n].IsNull())
experimental-genesis  984                 return fMiner ? false : error("ConnectInputs() : %s prev tx already used at %s", GetHash().ToString().substr(0,10).c_str(), txindex.vSpent[prevout.n].ToString().c_str());
experimental-genesis  985 
experimental-genesis  986             // Check for negative or overflow input values
experimental-genesis  987             nValueIn += txPrev.vout[prevout.n].nValue;
experimental-genesis  988             if (!MoneyRange(txPrev.vout[prevout.n].nValue) || !MoneyRange(nValueIn))
experimental-genesis  989                 return DoS(100, error("ConnectInputs() : txin values out of range"));
experimental-genesis  990 
experimental-genesis  991             // Mark outpoints as spent
experimental-genesis  992             txindex.vSpent[prevout.n] = posThisTx;
experimental-genesis  993 
experimental-genesis  994             // Write back
experimental-genesis  995             if (fBlock || fMiner)
experimental-genesis  996             {
experimental-genesis  997                 mapTestPool[prevout.hash] = txindex;
experimental-genesis  998             }
experimental-genesis  999         }
experimental-genesis 1000 
experimental-genesis 1001         if (nValueIn < GetValueOut())
experimental-genesis 1002             return DoS(100, error("ConnectInputs() : %s value in < value out", GetHash().ToString().substr(0,10).c_str()));
experimental-genesis 1003 
experimental-genesis 1004         // Tally transaction fees
experimental-genesis 1005         int64 nTxFee = nValueIn - GetValueOut();
experimental-genesis 1006         if (nTxFee < 0)
experimental-genesis 1007             return DoS(100, error("ConnectInputs() : %s nTxFee < 0", GetHash().ToString().substr(0,10).c_str()));
experimental-genesis 1008         if (nTxFee < nMinFee)
experimental-genesis 1009             return false;
experimental-genesis 1010         nFees += nTxFee;
experimental-genesis 1011         if (!MoneyRange(nFees))
experimental-genesis 1012             return DoS(100, error("ConnectInputs() : nFees out of range"));
experimental-genesis 1013     }
experimental-genesis 1014 
experimental-genesis 1015     if (fBlock)
experimental-genesis 1016     {
experimental-genesis 1017         // Add transaction to changes
experimental-genesis 1018         mapTestPool[GetHash()] = CTxIndex(posThisTx, vout.size());
experimental-genesis 1019     }
experimental-genesis 1020     else if (fMiner)
experimental-genesis 1021     {
experimental-genesis 1022         // Add transaction to test pool
experimental-genesis 1023         mapTestPool[GetHash()] = CTxIndex(CDiskTxPos(1,1,1), vout.size());
experimental-genesis 1024     }
experimental-genesis 1025 
experimental-genesis 1026     return true;
experimental-genesis 1027 }
experimental-genesis 1028 
experimental-genesis 1029 
experimental-genesis 1030 bool CTransaction::ClientConnectInputs()
experimental-genesis 1031 {
experimental-genesis 1032     if (IsCoinBase())
experimental-genesis 1033         return false;
experimental-genesis 1034 
experimental-genesis 1035     // Take over previous transactions' spent pointers
experimental-genesis 1036     CRITICAL_BLOCK(cs_mapTransactions)
experimental-genesis 1037     {
experimental-genesis 1038         int64 nValueIn = 0;
experimental-genesis 1039         for (int i = 0; i < vin.size(); i++)
experimental-genesis 1040         {
experimental-genesis 1041             // Get prev tx from single transactions in memory
experimental-genesis 1042             COutPoint prevout = vin[i].prevout;
experimental-genesis 1043             if (!mapTransactions.count(prevout.hash))
experimental-genesis 1044                 return false;
experimental-genesis 1045             CTransaction& txPrev = mapTransactions[prevout.hash];
experimental-genesis 1046 
experimental-genesis 1047             if (prevout.n >= txPrev.vout.size())
experimental-genesis 1048                 return false;
experimental-genesis 1049 
experimental-genesis 1050             // Verify signature
experimental-genesis 1051             if (!VerifySignature(txPrev, *this, i))
experimental-genesis 1052                 return error("ConnectInputs() : VerifySignature failed");
experimental-genesis 1053 
experimental-genesis 1054             ///// this is redundant with the mapNextTx stuff, not sure which I want to get rid of
experimental-genesis 1055             ///// this has to go away now that posNext is gone
experimental-genesis 1056             // // Check for conflicts
experimental-genesis 1057             // if (!txPrev.vout[prevout.n].posNext.IsNull())
experimental-genesis 1058             //     return error("ConnectInputs() : prev tx already used");
experimental-genesis 1059             //
experimental-genesis 1060             // // Flag outpoints as used
experimental-genesis 1061             // txPrev.vout[prevout.n].posNext = posThisTx;
experimental-genesis 1062 
experimental-genesis 1063             nValueIn += txPrev.vout[prevout.n].nValue;
experimental-genesis 1064 
experimental-genesis 1065             if (!MoneyRange(txPrev.vout[prevout.n].nValue) || !MoneyRange(nValueIn))
experimental-genesis 1066                 return error("ClientConnectInputs() : txin values out of range");
experimental-genesis 1067         }
experimental-genesis 1068         if (GetValueOut() > nValueIn)
experimental-genesis 1069             return false;
experimental-genesis 1070     }
experimental-genesis 1071 
experimental-genesis 1072     return true;
experimental-genesis 1073 }
experimental-genesis 1074 
experimental-genesis 1075 
experimental-genesis 1076 
experimental-genesis 1077 
experimental-genesis 1078 bool CBlock::DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex)
experimental-genesis 1079 {
experimental-genesis 1080     // Disconnect in reverse order
experimental-genesis 1081     for (int i = vtx.size()-1; i >= 0; i--)
experimental-genesis 1082         if (!vtx[i].DisconnectInputs(txdb))
experimental-genesis 1083             return false;
experimental-genesis 1084 
experimental-genesis 1085     // Update block index on disk without changing it in memory.
experimental-genesis 1086     // The memory index structure will be changed after the db commits.
experimental-genesis 1087     if (pindex->pprev)
experimental-genesis 1088     {
experimental-genesis 1089         CDiskBlockIndex blockindexPrev(pindex->pprev);
experimental-genesis 1090         blockindexPrev.hashNext = 0;
experimental-genesis 1091         if (!txdb.WriteBlockIndex(blockindexPrev))
experimental-genesis 1092             return error("DisconnectBlock() : WriteBlockIndex failed");
experimental-genesis 1093     }
experimental-genesis 1094 
experimental-genesis 1095     return true;
experimental-genesis 1096 }
experimental-genesis 1097 
experimental-genesis 1098 bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex)
experimental-genesis 1099 {
experimental-genesis 1100     // Check it again in case a previous version let a bad block in
experimental-genesis 1101     if (!CheckBlock())
experimental-genesis 1102         return false;
experimental-genesis 1103 
experimental-genesis 1104     // Do not allow blocks that contain transactions which 'overwrite' older transactions,
experimental-genesis 1105     // unless those are already completely spent.
experimental-genesis 1106     // If such overwrites are allowed, coinbases and transactions depending upon those
experimental-genesis 1107     // can be duplicated to remove the ability to spend the first instance -- even after
experimental-genesis 1108     // being sent to another address.
experimental-genesis 1109     // See BIP30 and http://r6.ca/blog/20120206T005236Z.html for more information.
experimental-genesis 1110     // This logic is not necessary for memory pool transactions, as AcceptToMemoryPool
experimental-genesis 1111     // already refuses previously-known transaction id's entirely.
experimental-genesis 1112     // This rule applies to all blocks whose timestamp is after March 15, 2012, 0:00 UTC.
experimental-genesis 1113     // On testnet it is enabled as of februari 20, 2012, 0:00 UTC.
experimental-genesis 1114     if (pindex->nTime > 1331769600 || (fTestNet && pindex->nTime > 1329696000))
experimental-genesis 1115         BOOST_FOREACH(CTransaction& tx, vtx)
experimental-genesis 1116         {
experimental-genesis 1117             CTxIndex txindexOld;
experimental-genesis 1118             if (txdb.ReadTxIndex(tx.GetHash(), txindexOld))
experimental-genesis 1119                 BOOST_FOREACH(CDiskTxPos &pos, txindexOld.vSpent)
experimental-genesis 1120                     if (pos.IsNull())
experimental-genesis 1121                         return false;
experimental-genesis 1122         }
experimental-genesis 1123 
experimental-genesis 1124     //// issue here: it doesn't know the version
experimental-genesis 1125     unsigned int nTxPos = pindex->nBlockPos + ::GetSerializeSize(CBlock(), SER_DISK) - 1 + GetSizeOfCompactSize(vtx.size());
experimental-genesis 1126 
experimental-genesis 1127     map<uint256, CTxIndex> mapQueuedChanges;
experimental-genesis 1128     int64 nFees = 0;
experimental-genesis 1129     BOOST_FOREACH(CTransaction& tx, vtx)
experimental-genesis 1130     {
experimental-genesis 1131         CDiskTxPos posThisTx(pindex->nFile, pindex->nBlockPos, nTxPos);
experimental-genesis 1132         nTxPos += ::GetSerializeSize(tx, SER_DISK);
experimental-genesis 1133 
experimental-genesis 1134         bool fInvalid;
experimental-genesis 1135         if (!tx.ConnectInputs(txdb, mapQueuedChanges, posThisTx, pindex, nFees, true, false, 0, fInvalid))
experimental-genesis 1136             return false;
experimental-genesis 1137     }
experimental-genesis 1138     // Write queued txindex changes
experimental-genesis 1139     for (map<uint256, CTxIndex>::iterator mi = mapQueuedChanges.begin(); mi != mapQueuedChanges.end(); ++mi)
experimental-genesis 1140     {
experimental-genesis 1141         if (!txdb.UpdateTxIndex((*mi).first, (*mi).second))
experimental-genesis 1142             return error("ConnectBlock() : UpdateTxIndex failed");
experimental-genesis 1143     }
experimental-genesis 1144 
experimental-genesis 1145     if (vtx[0].GetValueOut() > GetBlockValue(pindex->nHeight, nFees))
experimental-genesis 1146         return false;
experimental-genesis 1147 
experimental-genesis 1148     // Update block index on disk without changing it in memory.
experimental-genesis 1149     // The memory index structure will be changed after the db commits.
experimental-genesis 1150     if (pindex->pprev)
experimental-genesis 1151     {
experimental-genesis 1152         CDiskBlockIndex blockindexPrev(pindex->pprev);
experimental-genesis 1153         blockindexPrev.hashNext = pindex->GetBlockHash();
experimental-genesis 1154         if (!txdb.WriteBlockIndex(blockindexPrev))
experimental-genesis 1155             return error("ConnectBlock() : WriteBlockIndex failed");
experimental-genesis 1156     }
experimental-genesis 1157 
experimental-genesis 1158     // Watch for transactions paying to me
experimental-genesis 1159     BOOST_FOREACH(CTransaction& tx, vtx)
experimental-genesis 1160         SyncWithWallets(tx, this, true);
experimental-genesis 1161 
experimental-genesis 1162     return true;
experimental-genesis 1163 }
experimental-genesis 1164 
experimental-genesis 1165 bool static Reorganize(CTxDB& txdb, CBlockIndex* pindexNew)
experimental-genesis 1166 {
experimental-genesis 1167     printf("REORGANIZE\n");
experimental-genesis 1168 
experimental-genesis 1169     // Find the fork
experimental-genesis 1170     CBlockIndex* pfork = pindexBest;
experimental-genesis 1171     CBlockIndex* plonger = pindexNew;
experimental-genesis 1172     while (pfork != plonger)
experimental-genesis 1173     {
experimental-genesis 1174         while (plonger->nHeight > pfork->nHeight)
experimental-genesis 1175             if (!(plonger = plonger->pprev))
experimental-genesis 1176                 return error("Reorganize() : plonger->pprev is null");
experimental-genesis 1177         if (pfork == plonger)
experimental-genesis 1178             break;
experimental-genesis 1179         if (!(pfork = pfork->pprev))
experimental-genesis 1180             return error("Reorganize() : pfork->pprev is null");
experimental-genesis 1181     }
experimental-genesis 1182 
experimental-genesis 1183     // List of what to disconnect
experimental-genesis 1184     vector<CBlockIndex*> vDisconnect;
experimental-genesis 1185     for (CBlockIndex* pindex = pindexBest; pindex != pfork; pindex = pindex->pprev)
experimental-genesis 1186         vDisconnect.push_back(pindex);
experimental-genesis 1187 
experimental-genesis 1188     // List of what to connect
experimental-genesis 1189     vector<CBlockIndex*> vConnect;
experimental-genesis 1190     for (CBlockIndex* pindex = pindexNew; pindex != pfork; pindex = pindex->pprev)
experimental-genesis 1191         vConnect.push_back(pindex);
experimental-genesis 1192     reverse(vConnect.begin(), vConnect.end());
experimental-genesis 1193 
experimental-genesis 1194     // Disconnect shorter branch
experimental-genesis 1195     vector<CTransaction> vResurrect;
experimental-genesis 1196     BOOST_FOREACH(CBlockIndex* pindex, vDisconnect)
experimental-genesis 1197     {
experimental-genesis 1198         CBlock block;
experimental-genesis 1199         if (!block.ReadFromDisk(pindex))
experimental-genesis 1200             return error("Reorganize() : ReadFromDisk for disconnect failed");
experimental-genesis 1201         if (!block.DisconnectBlock(txdb, pindex))
experimental-genesis 1202             return error("Reorganize() : DisconnectBlock failed");
experimental-genesis 1203 
experimental-genesis 1204         // Queue memory transactions to resurrect
experimental-genesis 1205         BOOST_FOREACH(const CTransaction& tx, block.vtx)
experimental-genesis 1206             if (!tx.IsCoinBase())
experimental-genesis 1207                 vResurrect.push_back(tx);
experimental-genesis 1208     }
experimental-genesis 1209 
experimental-genesis 1210     // Connect longer branch
experimental-genesis 1211     vector<CTransaction> vDelete;
experimental-genesis 1212     for (int i = 0; i < vConnect.size(); i++)
experimental-genesis 1213     {
experimental-genesis 1214         CBlockIndex* pindex = vConnect[i];
experimental-genesis 1215         CBlock block;
experimental-genesis 1216         if (!block.ReadFromDisk(pindex))
experimental-genesis 1217             return error("Reorganize() : ReadFromDisk for connect failed");
experimental-genesis 1218         if (!block.ConnectBlock(txdb, pindex))
experimental-genesis 1219         {
experimental-genesis 1220             // Invalid block
experimental-genesis 1221             txdb.TxnAbort();
experimental-genesis 1222             return error("Reorganize() : ConnectBlock failed");
experimental-genesis 1223         }
experimental-genesis 1224 
experimental-genesis 1225         // Queue memory transactions to delete
experimental-genesis 1226         BOOST_FOREACH(const CTransaction& tx, block.vtx)
experimental-genesis 1227             vDelete.push_back(tx);
experimental-genesis 1228     }
experimental-genesis 1229     if (!txdb.WriteHashBestChain(pindexNew->GetBlockHash()))
experimental-genesis 1230         return error("Reorganize() : WriteHashBestChain failed");
experimental-genesis 1231 
experimental-genesis 1232     // Make sure it's successfully written to disk before changing memory structure
experimental-genesis 1233     if (!txdb.TxnCommit())
experimental-genesis 1234         return error("Reorganize() : TxnCommit failed");
experimental-genesis 1235 
experimental-genesis 1236     // Disconnect shorter branch
experimental-genesis 1237     BOOST_FOREACH(CBlockIndex* pindex, vDisconnect)
experimental-genesis 1238         if (pindex->pprev)
experimental-genesis 1239             pindex->pprev->pnext = NULL;
experimental-genesis 1240 
experimental-genesis 1241     // Connect longer branch
experimental-genesis 1242     BOOST_FOREACH(CBlockIndex* pindex, vConnect)
experimental-genesis 1243         if (pindex->pprev)
experimental-genesis 1244             pindex->pprev->pnext = pindex;
experimental-genesis 1245 
experimental-genesis 1246     // Resurrect memory transactions that were in the disconnected branch
experimental-genesis 1247     BOOST_FOREACH(CTransaction& tx, vResurrect)
experimental-genesis 1248         tx.AcceptToMemoryPool(txdb, false);
experimental-genesis 1249 
experimental-genesis 1250     // Delete redundant memory transactions that are in the connected branch
experimental-genesis 1251     BOOST_FOREACH(CTransaction& tx, vDelete)
experimental-genesis 1252         tx.RemoveFromMemoryPool();
experimental-genesis 1253 
experimental-genesis 1254     return true;
experimental-genesis 1255 }
experimental-genesis 1256 
experimental-genesis 1257 
experimental-genesis 1258 bool CBlock::SetBestChain(CTxDB& txdb, CBlockIndex* pindexNew)
experimental-genesis 1259 {
experimental-genesis 1260     uint256 hash = GetHash();
experimental-genesis 1261 
experimental-genesis 1262     txdb.TxnBegin();
experimental-genesis 1263     if (pindexGenesisBlock == NULL && hash == hashGenesisBlock)
experimental-genesis 1264     {
experimental-genesis 1265         txdb.WriteHashBestChain(hash);
experimental-genesis 1266         if (!txdb.TxnCommit())
experimental-genesis 1267             return error("SetBestChain() : TxnCommit failed");
experimental-genesis 1268         pindexGenesisBlock = pindexNew;
experimental-genesis 1269     }
experimental-genesis 1270     else if (hashPrevBlock == hashBestChain)
experimental-genesis 1271     {
experimental-genesis 1272         // Adding to current best branch
experimental-genesis 1273         if (!ConnectBlock(txdb, pindexNew) || !txdb.WriteHashBestChain(hash))
experimental-genesis 1274         {
experimental-genesis 1275             txdb.TxnAbort();
experimental-genesis 1276             InvalidChainFound(pindexNew);
experimental-genesis 1277             return error("SetBestChain() : ConnectBlock failed");
experimental-genesis 1278         }
experimental-genesis 1279         if (!txdb.TxnCommit())
experimental-genesis 1280             return error("SetBestChain() : TxnCommit failed");
experimental-genesis 1281 
experimental-genesis 1282         // Add to current best branch
experimental-genesis 1283         pindexNew->pprev->pnext = pindexNew;
experimental-genesis 1284 
experimental-genesis 1285         // Delete redundant memory transactions
experimental-genesis 1286         BOOST_FOREACH(CTransaction& tx, vtx)
experimental-genesis 1287             tx.RemoveFromMemoryPool();
experimental-genesis 1288     }
experimental-genesis 1289     else
experimental-genesis 1290     {
experimental-genesis 1291         // New best branch
experimental-genesis 1292         if (!Reorganize(txdb, pindexNew))
experimental-genesis 1293         {
experimental-genesis 1294             txdb.TxnAbort();
experimental-genesis 1295             InvalidChainFound(pindexNew);
experimental-genesis 1296             return error("SetBestChain() : Reorganize failed");
experimental-genesis 1297         }
experimental-genesis 1298     }
experimental-genesis 1299 
experimental-genesis 1300     // Update best block in wallet (so we can detect restored wallets)
experimental-genesis 1301     if (!IsInitialBlockDownload())
experimental-genesis 1302     {
experimental-genesis 1303         const CBlockLocator locator(pindexNew);
experimental-genesis 1304         ::SetBestChain(locator);
experimental-genesis 1305     }
experimental-genesis 1306 
experimental-genesis 1307     // New best block
experimental-genesis 1308     hashBestChain = hash;
experimental-genesis 1309     pindexBest = pindexNew;
experimental-genesis 1310     nBestHeight = pindexBest->nHeight;
experimental-genesis 1311     bnBestChainWork = pindexNew->bnChainWork;
experimental-genesis 1312     nTimeBestReceived = GetTime();
experimental-genesis 1313     nTransactionsUpdated++;
experimental-genesis 1314     printf("SetBestChain: new best=%s  height=%d  work=%s\n", hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, bnBestChainWork.ToString().c_str());
experimental-genesis 1315 
experimental-genesis 1316     return true;
experimental-genesis 1317 }
experimental-genesis 1318 
experimental-genesis 1319 
experimental-genesis 1320 bool CBlock::AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos)
experimental-genesis 1321 {
experimental-genesis 1322     // Check for duplicate
experimental-genesis 1323     uint256 hash = GetHash();
experimental-genesis 1324     if (mapBlockIndex.count(hash))
experimental-genesis 1325         return error("AddToBlockIndex() : %s already exists", hash.ToString().substr(0,20).c_str());
experimental-genesis 1326 
experimental-genesis 1327     // Construct new block index object
experimental-genesis 1328     CBlockIndex* pindexNew = new CBlockIndex(nFile, nBlockPos, *this);
experimental-genesis 1329     if (!pindexNew)
experimental-genesis 1330         return error("AddToBlockIndex() : new CBlockIndex failed");
experimental-genesis 1331     map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;
experimental-genesis 1332     pindexNew->phashBlock = &((*mi).first);
experimental-genesis 1333     map<uint256, CBlockIndex*>::iterator miPrev = mapBlockIndex.find(hashPrevBlock);
experimental-genesis 1334     if (miPrev != mapBlockIndex.end())
experimental-genesis 1335     {
experimental-genesis 1336         pindexNew->pprev = (*miPrev).second;
experimental-genesis 1337         pindexNew->nHeight = pindexNew->pprev->nHeight + 1;
experimental-genesis 1338     }
experimental-genesis 1339     pindexNew->bnChainWork = (pindexNew->pprev ? pindexNew->pprev->bnChainWork : 0) + pindexNew->GetBlockWork();
experimental-genesis 1340 
experimental-genesis 1341     CTxDB txdb;
experimental-genesis 1342     txdb.TxnBegin();
experimental-genesis 1343     txdb.WriteBlockIndex(CDiskBlockIndex(pindexNew));
experimental-genesis 1344     if (!txdb.TxnCommit())
experimental-genesis 1345         return false;
experimental-genesis 1346 
experimental-genesis 1347     // New best
experimental-genesis 1348     if (pindexNew->bnChainWork > bnBestChainWork)
experimental-genesis 1349         if (!SetBestChain(txdb, pindexNew))
experimental-genesis 1350             return false;
experimental-genesis 1351 
experimental-genesis 1352     txdb.Close();
experimental-genesis 1353 
experimental-genesis 1354     if (pindexNew == pindexBest)
experimental-genesis 1355     {
experimental-genesis 1356         // Notify UI to display prev block's coinbase if it was ours
experimental-genesis 1357         static uint256 hashPrevBestCoinBase;
experimental-genesis 1358         UpdatedTransaction(hashPrevBestCoinBase);
experimental-genesis 1359         hashPrevBestCoinBase = vtx[0].GetHash();
experimental-genesis 1360     }
experimental-genesis 1361 
experimental-genesis 1362     MainFrameRepaint();
experimental-genesis 1363     return true;
experimental-genesis 1364 }
experimental-genesis 1365 
experimental-genesis 1366 
experimental-genesis 1367 
experimental-genesis 1368 
experimental-genesis 1369 bool CBlock::CheckBlock() const
experimental-genesis 1370 {
experimental-genesis 1371     // These are checks that are independent of context
experimental-genesis 1372     // that can be verified before saving an orphan block.
experimental-genesis 1373 
experimental-genesis 1374     // Size limits
experimental-genesis 1375     if (vtx.empty() || vtx.size() > MAX_BLOCK_SIZE || ::GetSerializeSize(*this, SER_NETWORK) > MAX_BLOCK_SIZE)
experimental-genesis 1376         return DoS(100, error("CheckBlock() : size limits failed"));
experimental-genesis 1377 
experimental-genesis 1378     // Check proof of work matches claimed amount
experimental-genesis 1379     if (!CheckProofOfWork(GetHash(), nBits))
experimental-genesis 1380         return DoS(50, error("CheckBlock() : proof of work failed"));
experimental-genesis 1381 
experimental-genesis 1382     // Check timestamp
experimental-genesis 1383     if (GetBlockTime() > GetAdjustedTime() + 2 * 60 * 60)
experimental-genesis 1384         return error("CheckBlock() : block timestamp too far in the future");
experimental-genesis 1385 
experimental-genesis 1386     // First transaction must be coinbase, the rest must not be
experimental-genesis 1387     if (vtx.empty() || !vtx[0].IsCoinBase())
experimental-genesis 1388         return DoS(100, error("CheckBlock() : first tx is not coinbase"));
experimental-genesis 1389     for (int i = 1; i < vtx.size(); i++)
experimental-genesis 1390         if (vtx[i].IsCoinBase())
experimental-genesis 1391             return DoS(100, error("CheckBlock() : more than one coinbase"));
experimental-genesis 1392 
experimental-genesis 1393     // Check transactions
experimental-genesis 1394     BOOST_FOREACH(const CTransaction& tx, vtx)
experimental-genesis 1395         if (!tx.CheckTransaction())
experimental-genesis 1396             return DoS(tx.nDoS, error("CheckBlock() : CheckTransaction failed"));
experimental-genesis 1397 
experimental-genesis 1398     // Check that it's not full of nonstandard transactions
experimental-genesis 1399     if (GetSigOpCount() > MAX_BLOCK_SIGOPS)
experimental-genesis 1400         return DoS(100, error("CheckBlock() : out-of-bounds SigOpCount"));
experimental-genesis 1401 
experimental-genesis 1402     // Check merkleroot
experimental-genesis 1403     if (hashMerkleRoot != BuildMerkleTree())
experimental-genesis 1404         return DoS(100, error("CheckBlock() : hashMerkleRoot mismatch"));
experimental-genesis 1405 
experimental-genesis 1406     return true;
experimental-genesis 1407 }
experimental-genesis 1408 
experimental-genesis 1409 bool CBlock::AcceptBlock()
experimental-genesis 1410 {
experimental-genesis 1411     // Check for duplicate
experimental-genesis 1412     uint256 hash = GetHash();
experimental-genesis 1413     if (mapBlockIndex.count(hash))
experimental-genesis 1414         return error("AcceptBlock() : block already in mapBlockIndex");
experimental-genesis 1415 
experimental-genesis 1416     // Get prev block index
experimental-genesis 1417     map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashPrevBlock);
experimental-genesis 1418     if (mi == mapBlockIndex.end())
experimental-genesis 1419         return DoS(10, error("AcceptBlock() : prev block not found"));
experimental-genesis 1420     CBlockIndex* pindexPrev = (*mi).second;
experimental-genesis 1421     int nHeight = pindexPrev->nHeight+1;
experimental-genesis 1422 
experimental-genesis 1423     // Check proof of work
experimental-genesis 1424     if (nBits != GetNextWorkRequired(pindexPrev, this))
experimental-genesis 1425         return DoS(100, error("AcceptBlock() : incorrect proof of work"));
experimental-genesis 1426 
experimental-genesis 1427     // Check timestamp against prev
experimental-genesis 1428     if (GetBlockTime() <= pindexPrev->GetMedianTimePast())
experimental-genesis 1429         return error("AcceptBlock() : block's timestamp is too early");
experimental-genesis 1430 
experimental-genesis 1431     // Check that all transactions are finalized
experimental-genesis 1432     BOOST_FOREACH(const CTransaction& tx, vtx)
experimental-genesis 1433         if (!tx.IsFinal(nHeight, GetBlockTime()))
experimental-genesis 1434             return DoS(10, error("AcceptBlock() : contains a non-final transaction"));
experimental-genesis 1435 
experimental-genesis 1436     // Check that the block chain matches the known block chain up to a checkpoint
experimental-genesis 1437     if (!Checkpoints::CheckBlock(nHeight, hash))
experimental-genesis 1438         return DoS(100, error("AcceptBlock() : rejected by checkpoint lockin at %d", nHeight));
experimental-genesis 1439 
experimental-genesis 1440     // Write block to history file
experimental-genesis 1441     if (!CheckDiskSpace(::GetSerializeSize(*this, SER_DISK)))
experimental-genesis 1442         return error("AcceptBlock() : out of disk space");
experimental-genesis 1443     unsigned int nFile = -1;
experimental-genesis 1444     unsigned int nBlockPos = 0;
experimental-genesis 1445     if (!WriteToDisk(nFile, nBlockPos))
experimental-genesis 1446         return error("AcceptBlock() : WriteToDisk failed");
experimental-genesis 1447     if (!AddToBlockIndex(nFile, nBlockPos))
experimental-genesis 1448         return error("AcceptBlock() : AddToBlockIndex failed");
experimental-genesis 1449 
experimental-genesis 1450     // Relay inventory, but don't relay old inventory during initial block download
experimental-genesis 1451     if (hashBestChain == hash)
experimental-genesis 1452         CRITICAL_BLOCK(cs_vNodes)
experimental-genesis 1453             BOOST_FOREACH(CNode* pnode, vNodes)
experimental-genesis 1454                 if (nBestHeight > (pnode->nStartingHeight != -1 ? pnode->nStartingHeight - 2000 : 140700))
experimental-genesis 1455                     pnode->PushInventory(CInv(MSG_BLOCK, hash));
experimental-genesis 1456 
experimental-genesis 1457     return true;
experimental-genesis 1458 }
experimental-genesis 1459 
experimental-genesis 1460 bool ProcessBlock(CNode* pfrom, CBlock* pblock)
experimental-genesis 1461 {
experimental-genesis 1462     // Check for duplicate
experimental-genesis 1463     uint256 hash = pblock->GetHash();
experimental-genesis 1464     if (mapBlockIndex.count(hash))
experimental-genesis 1465         return error("ProcessBlock() : already have block %d %s", mapBlockIndex[hash]->nHeight, hash.ToString().substr(0,20).c_str());
experimental-genesis 1466     if (mapOrphanBlocks.count(hash))
experimental-genesis 1467         return error("ProcessBlock() : already have block (orphan) %s", hash.ToString().substr(0,20).c_str());
experimental-genesis 1468 
experimental-genesis 1469     // Preliminary checks
experimental-genesis 1470     if (!pblock->CheckBlock())
experimental-genesis 1471         return error("ProcessBlock() : CheckBlock FAILED");
experimental-genesis 1472 
experimental-genesis 1473     CBlockIndex* pcheckpoint = Checkpoints::GetLastCheckpoint(mapBlockIndex);
experimental-genesis 1474     if (pcheckpoint && pblock->hashPrevBlock != hashBestChain)
experimental-genesis 1475     {
experimental-genesis 1476         // Extra checks to prevent "fill up memory by spamming with bogus blocks"
experimental-genesis 1477         int64 deltaTime = pblock->GetBlockTime() - pcheckpoint->nTime;
experimental-genesis 1478         if (deltaTime < 0)
experimental-genesis 1479         {
experimental-genesis 1480             if (pfrom)
experimental-genesis 1481                 pfrom->Misbehaving(100);
experimental-genesis 1482             return error("ProcessBlock() : block with timestamp before last checkpoint");
experimental-genesis 1483         }
experimental-genesis 1484         CBigNum bnNewBlock;
experimental-genesis 1485         bnNewBlock.SetCompact(pblock->nBits);
experimental-genesis 1486         CBigNum bnRequired;
experimental-genesis 1487         bnRequired.SetCompact(ComputeMinWork(pcheckpoint->nBits, deltaTime));
experimental-genesis 1488         if (bnNewBlock > bnRequired)
experimental-genesis 1489         {
experimental-genesis 1490             if (pfrom)
experimental-genesis 1491                 pfrom->Misbehaving(100);
experimental-genesis 1492             return error("ProcessBlock() : block with too little proof-of-work");
experimental-genesis 1493         }
experimental-genesis 1494     }
experimental-genesis 1495 
experimental-genesis 1496 
experimental-genesis 1497     // If don't already have its previous block, shunt it off to holding area until we get it
experimental-genesis 1498     if (!mapBlockIndex.count(pblock->hashPrevBlock))
experimental-genesis 1499     {
experimental-genesis 1500         printf("ProcessBlock: ORPHAN BLOCK, prev=%s\n", pblock->hashPrevBlock.ToString().substr(0,20).c_str());
experimental-genesis 1501         CBlock* pblock2 = new CBlock(*pblock);
experimental-genesis 1502         mapOrphanBlocks.insert(make_pair(hash, pblock2));
experimental-genesis 1503         mapOrphanBlocksByPrev.insert(make_pair(pblock2->hashPrevBlock, pblock2));
experimental-genesis 1504 
experimental-genesis 1505         // Ask this guy to fill in what we're missing
experimental-genesis 1506         if (pfrom)
experimental-genesis 1507             pfrom->PushGetBlocks(pindexBest, GetOrphanRoot(pblock2));
experimental-genesis 1508         return true;
experimental-genesis 1509     }
experimental-genesis 1510 
experimental-genesis 1511     // Store to disk
experimental-genesis 1512     if (!pblock->AcceptBlock())
experimental-genesis 1513         return error("ProcessBlock() : AcceptBlock FAILED");
experimental-genesis 1514 
experimental-genesis 1515     // Recursively process any orphan blocks that depended on this one
experimental-genesis 1516     vector<uint256> vWorkQueue;
experimental-genesis 1517     vWorkQueue.push_back(hash);
experimental-genesis 1518     for (int i = 0; i < vWorkQueue.size(); i++)
experimental-genesis 1519     {
experimental-genesis 1520         uint256 hashPrev = vWorkQueue[i];
experimental-genesis 1521         for (multimap<uint256, CBlock*>::iterator mi = mapOrphanBlocksByPrev.lower_bound(hashPrev);
experimental-genesis 1522              mi != mapOrphanBlocksByPrev.upper_bound(hashPrev);
experimental-genesis 1523              ++mi)
experimental-genesis 1524         {
experimental-genesis 1525             CBlock* pblockOrphan = (*mi).second;
experimental-genesis 1526             if (pblockOrphan->AcceptBlock())
experimental-genesis 1527                 vWorkQueue.push_back(pblockOrphan->GetHash());
experimental-genesis 1528             mapOrphanBlocks.erase(pblockOrphan->GetHash());
experimental-genesis 1529             delete pblockOrphan;
experimental-genesis 1530         }
experimental-genesis 1531         mapOrphanBlocksByPrev.erase(hashPrev);
experimental-genesis 1532     }
experimental-genesis 1533 
experimental-genesis 1534     printf("ProcessBlock: ACCEPTED\n");
experimental-genesis 1535     return true;
experimental-genesis 1536 }
experimental-genesis 1537 
experimental-genesis 1538 
experimental-genesis 1539 
experimental-genesis 1540 
experimental-genesis 1541 
experimental-genesis 1542 
experimental-genesis 1543 
experimental-genesis 1544 
experimental-genesis 1545 bool CheckDiskSpace(uint64 nAdditionalBytes)
experimental-genesis 1546 {
experimental-genesis 1547     uint64 nFreeBytesAvailable = filesystem::space(GetDataDir()).available;
experimental-genesis 1548 
experimental-genesis 1549     // Check for 15MB because database could create another 10MB log file at any time
experimental-genesis 1550     if (nFreeBytesAvailable < (uint64)15000000 + nAdditionalBytes)
experimental-genesis 1551     {
experimental-genesis 1552         fShutdown = true;
experimental-genesis 1553         string strMessage = _("Warning: Disk space is low  ");
experimental-genesis 1554         strMiscWarning = strMessage;
experimental-genesis 1555         printf("*** %s\n", strMessage.c_str());
experimental-genesis 1556         ThreadSafeMessageBox(strMessage, "Bitcoin", wxOK | wxICON_EXCLAMATION);
experimental-genesis 1557         CreateThread(Shutdown, NULL);
experimental-genesis 1558         return false;
experimental-genesis 1559     }
experimental-genesis 1560     return true;
experimental-genesis 1561 }
experimental-genesis 1562 
experimental-genesis 1563 FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode)
experimental-genesis 1564 {
experimental-genesis 1565     if (nFile == -1)
experimental-genesis 1566         return NULL;
experimental-genesis 1567     FILE* file = fopen(strprintf("%s/blk%04d.dat", GetDataDir().c_str(), nFile).c_str(), pszMode);
experimental-genesis 1568     if (!file)
experimental-genesis 1569         return NULL;
experimental-genesis 1570     if (nBlockPos != 0 && !strchr(pszMode, 'a') && !strchr(pszMode, 'w'))
experimental-genesis 1571     {
experimental-genesis 1572         if (fseek(file, nBlockPos, SEEK_SET) != 0)
experimental-genesis 1573         {
experimental-genesis 1574             fclose(file);
experimental-genesis 1575             return NULL;
experimental-genesis 1576         }
experimental-genesis 1577     }
experimental-genesis 1578     return file;
experimental-genesis 1579 }
experimental-genesis 1580 
experimental-genesis 1581 static unsigned int nCurrentBlockFile = 1;
experimental-genesis 1582 
experimental-genesis 1583 FILE* AppendBlockFile(unsigned int& nFileRet)
experimental-genesis 1584 {
experimental-genesis 1585     nFileRet = 0;
experimental-genesis 1586     loop
experimental-genesis 1587     {
experimental-genesis 1588         FILE* file = OpenBlockFile(nCurrentBlockFile, 0, "ab");
experimental-genesis 1589         if (!file)
experimental-genesis 1590             return NULL;
experimental-genesis 1591         if (fseek(file, 0, SEEK_END) != 0)
experimental-genesis 1592             return NULL;
experimental-genesis 1593         // FAT32 filesize max 4GB, fseek and ftell max 2GB, so we must stay under 2GB
experimental-genesis 1594         if (ftell(file) < 0x7F000000 - MAX_SIZE)
experimental-genesis 1595         {
experimental-genesis 1596             nFileRet = nCurrentBlockFile;
experimental-genesis 1597             return file;
experimental-genesis 1598         }
experimental-genesis 1599         fclose(file);
experimental-genesis 1600         nCurrentBlockFile++;
experimental-genesis 1601     }
experimental-genesis 1602 }
experimental-genesis 1603 
experimental-genesis 1604 bool LoadBlockIndex(bool fAllowNew)
experimental-genesis 1605 {
experimental-genesis 1606     if (fTestNet)
experimental-genesis 1607     {
experimental-genesis 1608         hashGenesisBlock = uint256("0x00000007199508e34a9ff81e6ec0c477a4cccff2a4767a8eee39c11db367b008");
experimental-genesis 1609         bnProofOfWorkLimit = CBigNum(~uint256(0) >> 28);
experimental-genesis 1610         pchMessageStart[0] = 0xfa;
experimental-genesis 1611         pchMessageStart[1] = 0xbf;
experimental-genesis 1612         pchMessageStart[2] = 0xb5;
experimental-genesis 1613         pchMessageStart[3] = 0xda;
experimental-genesis 1614     }
experimental-genesis 1615 
experimental-genesis 1616     //
experimental-genesis 1617     // Load block index
experimental-genesis 1618     //
experimental-genesis 1619     CTxDB txdb("cr");
experimental-genesis 1620     if (!txdb.LoadBlockIndex())
experimental-genesis 1621         return false;
experimental-genesis 1622     txdb.Close();
experimental-genesis 1623 
experimental-genesis 1624     //
experimental-genesis 1625     // Init with genesis block
experimental-genesis 1626     //
experimental-genesis 1627     if (mapBlockIndex.empty())
experimental-genesis 1628     {
experimental-genesis 1629         if (!fAllowNew)
experimental-genesis 1630             return false;
experimental-genesis 1631 
experimental-genesis 1632         // Genesis Block:
experimental-genesis 1633         // CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
experimental-genesis 1634         //   CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
experimental-genesis 1635         //     CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
experimental-genesis 1636         //     CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
experimental-genesis 1637         //   vMerkleTree: 4a5e1e
experimental-genesis 1638 
experimental-genesis 1639         // Genesis block
experimental-genesis 1640         const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
experimental-genesis 1641         CTransaction txNew;
experimental-genesis 1642         txNew.vin.resize(1);
experimental-genesis 1643         txNew.vout.resize(1);
experimental-genesis 1644         txNew.vin[0].scriptSig = CScript() << 486604799 << CBigNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
experimental-genesis 1645         txNew.vout[0].nValue = 50 * COIN;
experimental-genesis 1646         txNew.vout[0].scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
experimental-genesis 1647         CBlock block;
experimental-genesis 1648         block.vtx.push_back(txNew);
experimental-genesis 1649         block.hashPrevBlock = 0;
experimental-genesis 1650         block.hashMerkleRoot = block.BuildMerkleTree();
experimental-genesis 1651         block.nVersion = 1;
experimental-genesis 1652         block.nTime    = 1231006505;
experimental-genesis 1653         block.nBits    = 0x1d00ffff;
experimental-genesis 1654         block.nNonce   = 2083236893;
experimental-genesis 1655 
experimental-genesis 1656         if (fTestNet)
experimental-genesis 1657         {
experimental-genesis 1658             block.nTime    = 1296688602;
experimental-genesis 1659             block.nBits    = 0x1d07fff8;
experimental-genesis 1660             block.nNonce   = 384568319;
experimental-genesis 1661         }
experimental-genesis 1662 
experimental-genesis 1663         //// debug print
experimental-genesis 1664         printf("%s\n", block.GetHash().ToString().c_str());
experimental-genesis 1665         printf("%s\n", hashGenesisBlock.ToString().c_str());
experimental-genesis 1666         printf("%s\n", block.hashMerkleRoot.ToString().c_str());
experimental-genesis 1667         assert(block.hashMerkleRoot == uint256("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
experimental-genesis 1668         block.print();
experimental-genesis 1669         assert(block.GetHash() == hashGenesisBlock);
experimental-genesis 1670 
experimental-genesis 1671         // Start new block file
experimental-genesis 1672         unsigned int nFile;
experimental-genesis 1673         unsigned int nBlockPos;
experimental-genesis 1674         if (!block.WriteToDisk(nFile, nBlockPos))
experimental-genesis 1675             return error("LoadBlockIndex() : writing genesis block to disk failed");
experimental-genesis 1676         if (!block.AddToBlockIndex(nFile, nBlockPos))
experimental-genesis 1677             return error("LoadBlockIndex() : genesis block not accepted");
experimental-genesis 1678     }
experimental-genesis 1679 
experimental-genesis 1680     return true;
experimental-genesis 1681 }
experimental-genesis 1682 
experimental-genesis 1683 
experimental-genesis 1684 
experimental-genesis 1685 void PrintBlockTree()
experimental-genesis 1686 {
experimental-genesis 1687     // precompute tree structure
experimental-genesis 1688     map<CBlockIndex*, vector<CBlockIndex*> > mapNext;
experimental-genesis 1689     for (map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.begin(); mi != mapBlockIndex.end(); ++mi)
experimental-genesis 1690     {
experimental-genesis 1691         CBlockIndex* pindex = (*mi).second;
experimental-genesis 1692         mapNext[pindex->pprev].push_back(pindex);
experimental-genesis 1693         // test
experimental-genesis 1694         //while (rand() % 3 == 0)
experimental-genesis 1695         //    mapNext[pindex->pprev].push_back(pindex);
experimental-genesis 1696     }
experimental-genesis 1697 
experimental-genesis 1698     vector<pair<int, CBlockIndex*> > vStack;
experimental-genesis 1699     vStack.push_back(make_pair(0, pindexGenesisBlock));
experimental-genesis 1700 
experimental-genesis 1701     int nPrevCol = 0;
experimental-genesis 1702     while (!vStack.empty())
experimental-genesis 1703     {
experimental-genesis 1704         int nCol = vStack.back().first;
experimental-genesis 1705         CBlockIndex* pindex = vStack.back().second;
experimental-genesis 1706         vStack.pop_back();
experimental-genesis 1707 
experimental-genesis 1708         // print split or gap
experimental-genesis 1709         if (nCol > nPrevCol)
experimental-genesis 1710         {
experimental-genesis 1711             for (int i = 0; i < nCol-1; i++)
experimental-genesis 1712                 printf("| ");
experimental-genesis 1713             printf("|\\\n");
experimental-genesis 1714         }
experimental-genesis 1715         else if (nCol < nPrevCol)
experimental-genesis 1716         {
experimental-genesis 1717             for (int i = 0; i < nCol; i++)
experimental-genesis 1718                 printf("| ");
experimental-genesis 1719             printf("|\n");
experimental-genesis 1720        }
experimental-genesis 1721         nPrevCol = nCol;
experimental-genesis 1722 
experimental-genesis 1723         // print columns
experimental-genesis 1724         for (int i = 0; i < nCol; i++)
experimental-genesis 1725             printf("| ");
experimental-genesis 1726 
experimental-genesis 1727         // print item
experimental-genesis 1728         CBlock block;
experimental-genesis 1729         block.ReadFromDisk(pindex);
experimental-genesis 1730         printf("%d (%u,%u) %s  %s  tx %d",
experimental-genesis 1731             pindex->nHeight,
experimental-genesis 1732             pindex->nFile,
experimental-genesis 1733             pindex->nBlockPos,
experimental-genesis 1734             block.GetHash().ToString().substr(0,20).c_str(),
experimental-genesis 1735             DateTimeStrFormat("%x %H:%M:%S", block.GetBlockTime()).c_str(),
experimental-genesis 1736             block.vtx.size());
experimental-genesis 1737 
experimental-genesis 1738         PrintWallets(block);
experimental-genesis 1739 
experimental-genesis 1740         // put the main timechain first
experimental-genesis 1741         vector<CBlockIndex*>& vNext = mapNext[pindex];
experimental-genesis 1742         for (int i = 0; i < vNext.size(); i++)
experimental-genesis 1743         {
experimental-genesis 1744             if (vNext[i]->pnext)
experimental-genesis 1745             {
experimental-genesis 1746                 swap(vNext[0], vNext[i]);
experimental-genesis 1747                 break;
experimental-genesis 1748             }
experimental-genesis 1749         }
experimental-genesis 1750 
experimental-genesis 1751         // iterate children
experimental-genesis 1752         for (int i = 0; i < vNext.size(); i++)
experimental-genesis 1753             vStack.push_back(make_pair(nCol+i, vNext[i]));
experimental-genesis 1754     }
experimental-genesis 1755 }
experimental-genesis 1756 
experimental-genesis 1757 
experimental-genesis 1758 
experimental-genesis 1759 
experimental-genesis 1760 
experimental-genesis 1761 
experimental-genesis 1762 
experimental-genesis 1763 
experimental-genesis 1764 
experimental-genesis 1765 
experimental-genesis 1766 //////////////////////////////////////////////////////////////////////////////
experimental-genesis 1767 //
experimental-genesis 1768 // CAlert
experimental-genesis 1769 //
experimental-genesis 1770 
experimental-genesis 1771 map<uint256, CAlert> mapAlerts;
experimental-genesis 1772 CCriticalSection cs_mapAlerts;
experimental-genesis 1773 
experimental-genesis 1774 string GetWarnings(string strFor)
experimental-genesis 1775 {
experimental-genesis 1776     int nPriority = 0;
experimental-genesis 1777     string strStatusBar;
experimental-genesis 1778     string strRPC;
experimental-genesis 1779     if (GetBoolArg("-testsafemode"))
experimental-genesis 1780         strRPC = "test";
experimental-genesis 1781 
experimental-genesis 1782     // Misc warnings like out of disk space and clock is wrong
experimental-genesis 1783     if (strMiscWarning != "")
experimental-genesis 1784     {
experimental-genesis 1785         nPriority = 1000;
experimental-genesis 1786         strStatusBar = strMiscWarning;
experimental-genesis 1787     }
experimental-genesis 1788 
experimental-genesis 1789     // Longer invalid proof-of-work chain
experimental-genesis 1790     if (pindexBest && bnBestInvalidWork > bnBestChainWork + pindexBest->GetBlockWork() * 6)
experimental-genesis 1791     {
experimental-genesis 1792         nPriority = 2000;
experimental-genesis 1793         strStatusBar = strRPC = "WARNING: Displayed transactions may not be correct!  You may need to upgrade, or other nodes may need to upgrade.";
experimental-genesis 1794     }
experimental-genesis 1795 
experimental-genesis 1796     // Alerts
experimental-genesis 1797     CRITICAL_BLOCK(cs_mapAlerts)
experimental-genesis 1798     {
experimental-genesis 1799         BOOST_FOREACH(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)
experimental-genesis 1800         {
experimental-genesis 1801             const CAlert& alert = item.second;
experimental-genesis 1802             if (alert.AppliesToMe() && alert.nPriority > nPriority)
experimental-genesis 1803             {
experimental-genesis 1804                 nPriority = alert.nPriority;
experimental-genesis 1805                 strStatusBar = alert.strStatusBar;
experimental-genesis 1806             }
experimental-genesis 1807         }
experimental-genesis 1808     }
experimental-genesis 1809 
experimental-genesis 1810     if (strFor == "statusbar")
experimental-genesis 1811         return strStatusBar;
experimental-genesis 1812     else if (strFor == "rpc")
experimental-genesis 1813         return strRPC;
experimental-genesis 1814     assert(!"GetWarnings() : invalid parameter");
experimental-genesis 1815     return "error";
experimental-genesis 1816 }
experimental-genesis 1817 
experimental-genesis 1818 bool CAlert::ProcessAlert()
experimental-genesis 1819 {
experimental-genesis 1820     if (!CheckSignature())
experimental-genesis 1821         return false;
experimental-genesis 1822     if (!IsInEffect())
experimental-genesis 1823         return false;
experimental-genesis 1824 
experimental-genesis 1825     CRITICAL_BLOCK(cs_mapAlerts)
experimental-genesis 1826     {
experimental-genesis 1827         // Cancel previous alerts
experimental-genesis 1828         for (map<uint256, CAlert>::iterator mi = mapAlerts.begin(); mi != mapAlerts.end();)
experimental-genesis 1829         {
experimental-genesis 1830             const CAlert& alert = (*mi).second;
experimental-genesis 1831             if (Cancels(alert))
experimental-genesis 1832             {
experimental-genesis 1833                 printf("cancelling alert %d\n", alert.nID);
experimental-genesis 1834                 mapAlerts.erase(mi++);
experimental-genesis 1835             }
experimental-genesis 1836             else if (!alert.IsInEffect())
experimental-genesis 1837             {
experimental-genesis 1838                 printf("expiring alert %d\n", alert.nID);
experimental-genesis 1839                 mapAlerts.erase(mi++);
experimental-genesis 1840             }
experimental-genesis 1841             else
experimental-genesis 1842                 mi++;
experimental-genesis 1843         }
experimental-genesis 1844 
experimental-genesis 1845         // Check if this alert has been cancelled
experimental-genesis 1846         BOOST_FOREACH(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)
experimental-genesis 1847         {
experimental-genesis 1848             const CAlert& alert = item.second;
experimental-genesis 1849             if (alert.Cancels(*this))
experimental-genesis 1850             {
experimental-genesis 1851                 printf("alert already cancelled by %d\n", alert.nID);
experimental-genesis 1852                 return false;
experimental-genesis 1853             }
experimental-genesis 1854         }
experimental-genesis 1855 
experimental-genesis 1856         // Add to mapAlerts
experimental-genesis 1857         mapAlerts.insert(make_pair(GetHash(), *this));
experimental-genesis 1858     }
experimental-genesis 1859 
experimental-genesis 1860     printf("accepted alert %d, AppliesToMe()=%d\n", nID, AppliesToMe());
experimental-genesis 1861     MainFrameRepaint();
experimental-genesis 1862     return true;
experimental-genesis 1863 }
experimental-genesis 1864 
experimental-genesis 1865 
experimental-genesis 1866 
experimental-genesis 1867 
experimental-genesis 1868 
experimental-genesis 1869 
experimental-genesis 1870 
experimental-genesis 1871 
experimental-genesis 1872 //////////////////////////////////////////////////////////////////////////////
experimental-genesis 1873 //
experimental-genesis 1874 // Messages
experimental-genesis 1875 //
experimental-genesis 1876 
experimental-genesis 1877 
experimental-genesis 1878 bool static AlreadyHave(CTxDB& txdb, const CInv& inv)
experimental-genesis 1879 {
experimental-genesis 1880     switch (inv.type)
experimental-genesis 1881     {
experimental-genesis 1882     case MSG_TX:    return mapTransactions.count(inv.hash) || mapOrphanTransactions.count(inv.hash) || txdb.ContainsTx(inv.hash);
experimental-genesis 1883     case MSG_BLOCK: return mapBlockIndex.count(inv.hash) || mapOrphanBlocks.count(inv.hash);
experimental-genesis 1884     }
experimental-genesis 1885     // Don't know what it is, just say we already got one
experimental-genesis 1886     return true;
experimental-genesis 1887 }
experimental-genesis 1888 
experimental-genesis 1889 
experimental-genesis 1890 
experimental-genesis 1891 
experimental-genesis 1892 // The message start string is designed to be unlikely to occur in normal data.
experimental-genesis 1893 // The characters are rarely used upper ascii, not valid as UTF-8, and produce
experimental-genesis 1894 // a large 4-byte int at any alignment.
experimental-genesis 1895 unsigned char pchMessageStart[4] = { 0xf9, 0xbe, 0xb4, 0xd9 };
experimental-genesis 1896 
experimental-genesis 1897 
experimental-genesis 1898 bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
experimental-genesis 1899 {
experimental-genesis 1900     static map<unsigned int, vector<unsigned char> > mapReuseKey;
experimental-genesis 1901     RandAddSeedPerfmon();
experimental-genesis 1902     if (fDebug) {
experimental-genesis 1903         printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
experimental-genesis 1904         printf("received: %s (%d bytes)\n", strCommand.c_str(), vRecv.size());
experimental-genesis 1905     }
experimental-genesis 1906     if (mapArgs.count("-dropmessagestest") && GetRand(atoi(mapArgs["-dropmessagestest"])) == 0)
experimental-genesis 1907     {
experimental-genesis 1908         printf("dropmessagestest DROPPING RECV MESSAGE\n");
experimental-genesis 1909         return true;
experimental-genesis 1910     }
experimental-genesis 1911 
experimental-genesis 1912 
experimental-genesis 1913 
experimental-genesis 1914 
experimental-genesis 1915 
experimental-genesis 1916     if (strCommand == "version")
experimental-genesis 1917     {
experimental-genesis 1918         // Each connection can only send one version message
experimental-genesis 1919         if (pfrom->nVersion != 0)
experimental-genesis 1920         {
experimental-genesis 1921             pfrom->Misbehaving(1);
experimental-genesis 1922             return false;
experimental-genesis 1923         }
experimental-genesis 1924 
experimental-genesis 1925         int64 nTime;
experimental-genesis 1926         CAddress addrMe;
experimental-genesis 1927         CAddress addrFrom;
experimental-genesis 1928         uint64 nNonce = 1;
experimental-genesis 1929         vRecv >> pfrom->nVersion >> pfrom->nServices >> nTime >> addrMe;
experimental-genesis 1930         if (pfrom->nVersion == 10300)
experimental-genesis 1931             pfrom->nVersion = 300;
experimental-genesis 1932         if (pfrom->nVersion >= 106 && !vRecv.empty())
experimental-genesis 1933             vRecv >> addrFrom >> nNonce;
experimental-genesis 1934         if (pfrom->nVersion >= 106 && !vRecv.empty())
experimental-genesis 1935             vRecv >> pfrom->strSubVer;
experimental-genesis 1936         if (pfrom->nVersion >= 209 && !vRecv.empty())
experimental-genesis 1937             vRecv >> pfrom->nStartingHeight;
experimental-genesis 1938 
experimental-genesis 1939         if (pfrom->nVersion == 0)
experimental-genesis 1940             return false;
experimental-genesis 1941 
experimental-genesis 1942         // Disconnect if we connected to ourself
experimental-genesis 1943         if (nNonce == nLocalHostNonce && nNonce > 1)
experimental-genesis 1944         {
experimental-genesis 1945             printf("connected to self at %s, disconnecting\n", pfrom->addr.ToString().c_str());
experimental-genesis 1946             pfrom->fDisconnect = true;
experimental-genesis 1947             return true;
experimental-genesis 1948         }
experimental-genesis 1949 
experimental-genesis 1950         // Be shy and don't send version until we hear
experimental-genesis 1951         if (pfrom->fInbound)
experimental-genesis 1952             pfrom->PushVersion();
experimental-genesis 1953 
experimental-genesis 1954         pfrom->fClient = !(pfrom->nServices & NODE_NETWORK);
experimental-genesis 1955 
experimental-genesis 1956         AddTimeData(pfrom->addr.ip, nTime);
experimental-genesis 1957 
experimental-genesis 1958         // Change version
experimental-genesis 1959         if (pfrom->nVersion >= 209)
experimental-genesis 1960             pfrom->PushMessage("verack");
experimental-genesis 1961         pfrom->vSend.SetVersion(min(pfrom->nVersion, VERSION));
experimental-genesis 1962         if (pfrom->nVersion < 209)
experimental-genesis 1963             pfrom->vRecv.SetVersion(min(pfrom->nVersion, VERSION));
experimental-genesis 1964 
experimental-genesis 1965         if (!pfrom->fInbound)
experimental-genesis 1966         {
experimental-genesis 1967             // Advertise our address
experimental-genesis 1968             if (addrLocalHost.IsRoutable() && !fUseProxy)
experimental-genesis 1969             {
experimental-genesis 1970                 CAddress addr(addrLocalHost);
experimental-genesis 1971                 addr.nTime = GetAdjustedTime();
experimental-genesis 1972                 pfrom->PushAddress(addr);
experimental-genesis 1973             }
experimental-genesis 1974 
experimental-genesis 1975             // Get recent addresses
experimental-genesis 1976             if (pfrom->nVersion >= 31402 || mapAddresses.size() < 1000)
experimental-genesis 1977             {
experimental-genesis 1978                 pfrom->PushMessage("getaddr");
experimental-genesis 1979                 pfrom->fGetAddr = true;
experimental-genesis 1980             }
experimental-genesis 1981         }
experimental-genesis 1982 
experimental-genesis 1983         // Ask the first connected node for block updates
experimental-genesis 1984         static int nAskedForBlocks;
experimental-genesis 1985         if (!pfrom->fClient &&
experimental-genesis 1986             (pfrom->nVersion < 32000 || pfrom->nVersion >= 32400) &&
experimental-genesis 1987              (nAskedForBlocks < 1 || vNodes.size() <= 1))
experimental-genesis 1988         {
experimental-genesis 1989             nAskedForBlocks++;
experimental-genesis 1990             pfrom->PushGetBlocks(pindexBest, uint256(0));
experimental-genesis 1991         }
experimental-genesis 1992 
experimental-genesis 1993         // Relay alerts
experimental-genesis 1994         CRITICAL_BLOCK(cs_mapAlerts)
experimental-genesis 1995             BOOST_FOREACH(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)
experimental-genesis 1996                 item.second.RelayTo(pfrom);
experimental-genesis 1997 
experimental-genesis 1998         pfrom->fSuccessfullyConnected = true;
experimental-genesis 1999 
experimental-genesis 2000         printf("version message: version %d, blocks=%d\n", pfrom->nVersion, pfrom->nStartingHeight);
experimental-genesis 2001 
experimental-genesis 2002         cPeerBlockCounts.input(pfrom->nStartingHeight);
experimental-genesis 2003     }
experimental-genesis 2004 
experimental-genesis 2005 
experimental-genesis 2006     else if (pfrom->nVersion == 0)
experimental-genesis 2007     {
experimental-genesis 2008         // Must have a version message before anything else
experimental-genesis 2009         pfrom->Misbehaving(1);
experimental-genesis 2010         return false;
experimental-genesis 2011     }
experimental-genesis 2012 
experimental-genesis 2013 
experimental-genesis 2014     else if (strCommand == "verack")
experimental-genesis 2015     {
experimental-genesis 2016         pfrom->vRecv.SetVersion(min(pfrom->nVersion, VERSION));
experimental-genesis 2017     }
experimental-genesis 2018 
experimental-genesis 2019 
experimental-genesis 2020     else if (strCommand == "addr")
experimental-genesis 2021     {
experimental-genesis 2022         vector<CAddress> vAddr;
experimental-genesis 2023         vRecv >> vAddr;
experimental-genesis 2024 
experimental-genesis 2025         // Don't want addr from older versions unless seeding
experimental-genesis 2026         if (pfrom->nVersion < 209)
experimental-genesis 2027             return true;
experimental-genesis 2028         if (pfrom->nVersion < 31402 && mapAddresses.size() > 1000)
experimental-genesis 2029             return true;
experimental-genesis 2030         if (vAddr.size() > 1000)
experimental-genesis 2031         {
experimental-genesis 2032             pfrom->Misbehaving(20);
experimental-genesis 2033             return error("message addr size() = %d", vAddr.size());
experimental-genesis 2034         }
experimental-genesis 2035 
experimental-genesis 2036         // Store the new addresses
experimental-genesis 2037         CAddrDB addrDB;
experimental-genesis 2038         addrDB.TxnBegin();
experimental-genesis 2039         int64 nNow = GetAdjustedTime();
experimental-genesis 2040         int64 nSince = nNow - 10 * 60;
experimental-genesis 2041         BOOST_FOREACH(CAddress& addr, vAddr)
experimental-genesis 2042         {
experimental-genesis 2043             if (fShutdown)
experimental-genesis 2044                 return true;
experimental-genesis 2045             // ignore IPv6 for now, since it isn't implemented anyway
experimental-genesis 2046             if (!addr.IsIPv4())
experimental-genesis 2047                 continue;
experimental-genesis 2048             if (addr.nTime <= 100000000 || addr.nTime > nNow + 10 * 60)
experimental-genesis 2049                 addr.nTime = nNow - 5 * 24 * 60 * 60;
experimental-genesis 2050             AddAddress(addr, 2 * 60 * 60, &addrDB);
experimental-genesis 2051             pfrom->AddAddressKnown(addr);
experimental-genesis 2052             if (addr.nTime > nSince && !pfrom->fGetAddr && vAddr.size() <= 10 && addr.IsRoutable())
experimental-genesis 2053             {
experimental-genesis 2054                 // Relay to a limited number of other nodes
experimental-genesis 2055                 CRITICAL_BLOCK(cs_vNodes)
experimental-genesis 2056                 {
experimental-genesis 2057                     // Use deterministic randomness to send to the same nodes for 24 hours
experimental-genesis 2058                     // at a time so the setAddrKnowns of the chosen nodes prevent repeats
experimental-genesis 2059                     static uint256 hashSalt;
experimental-genesis 2060                     if (hashSalt == 0)
experimental-genesis 2061                         RAND_bytes((unsigned char*)&hashSalt, sizeof(hashSalt));
experimental-genesis 2062                     uint256 hashRand = hashSalt ^ (((int64)addr.ip)<<32) ^ ((GetTime()+addr.ip)/(24*60*60));
experimental-genesis 2063                     hashRand = Hash(BEGIN(hashRand), END(hashRand));
experimental-genesis 2064                     multimap<uint256, CNode*> mapMix;
experimental-genesis 2065                     BOOST_FOREACH(CNode* pnode, vNodes)
experimental-genesis 2066                     {
experimental-genesis 2067                         if (pnode->nVersion < 31402)
experimental-genesis 2068                             continue;
experimental-genesis 2069                         unsigned int nPointer;
experimental-genesis 2070                         memcpy(&nPointer, &pnode, sizeof(nPointer));
experimental-genesis 2071                         uint256 hashKey = hashRand ^ nPointer;
experimental-genesis 2072                         hashKey = Hash(BEGIN(hashKey), END(hashKey));
experimental-genesis 2073                         mapMix.insert(make_pair(hashKey, pnode));
experimental-genesis 2074                     }
experimental-genesis 2075                     int nRelayNodes = 2;
experimental-genesis 2076                     for (multimap<uint256, CNode*>::iterator mi = mapMix.begin(); mi != mapMix.end() && nRelayNodes-- > 0; ++mi)
experimental-genesis 2077                         ((*mi).second)->PushAddress(addr);
experimental-genesis 2078                 }
experimental-genesis 2079             }
experimental-genesis 2080         }
experimental-genesis 2081         addrDB.TxnCommit();  // Save addresses (it's ok if this fails)
experimental-genesis 2082         if (vAddr.size() < 1000)
experimental-genesis 2083             pfrom->fGetAddr = false;
experimental-genesis 2084     }
experimental-genesis 2085 
experimental-genesis 2086 
experimental-genesis 2087     else if (strCommand == "inv")
experimental-genesis 2088     {
experimental-genesis 2089         vector<CInv> vInv;
experimental-genesis 2090         vRecv >> vInv;
experimental-genesis 2091         if (vInv.size() > 50000)
experimental-genesis 2092         {
experimental-genesis 2093             pfrom->Misbehaving(20);
experimental-genesis 2094             return error("message inv size() = %d", vInv.size());
experimental-genesis 2095         }
experimental-genesis 2096 
experimental-genesis 2097         CTxDB txdb("r");
experimental-genesis 2098         BOOST_FOREACH(const CInv& inv, vInv)
experimental-genesis 2099         {
experimental-genesis 2100             if (fShutdown)
experimental-genesis 2101                 return true;
experimental-genesis 2102             pfrom->AddInventoryKnown(inv);
experimental-genesis 2103 
experimental-genesis 2104             bool fAlreadyHave = AlreadyHave(txdb, inv);
experimental-genesis 2105             if (fDebug)
experimental-genesis 2106                 printf("  got inventory: %s  %s\n", inv.ToString().c_str(), fAlreadyHave ? "have" : "new");
experimental-genesis 2107 
experimental-genesis 2108             if (!fAlreadyHave)
experimental-genesis 2109                 pfrom->AskFor(inv);
experimental-genesis 2110             else if (inv.type == MSG_BLOCK && mapOrphanBlocks.count(inv.hash))
experimental-genesis 2111                 pfrom->PushGetBlocks(pindexBest, GetOrphanRoot(mapOrphanBlocks[inv.hash]));
experimental-genesis 2112 
experimental-genesis 2113             // Track requests for our stuff
experimental-genesis 2114             Inventory(inv.hash);
experimental-genesis 2115         }
experimental-genesis 2116     }
experimental-genesis 2117 
experimental-genesis 2118 
experimental-genesis 2119     else if (strCommand == "getdata")
experimental-genesis 2120     {
experimental-genesis 2121         vector<CInv> vInv;
experimental-genesis 2122         vRecv >> vInv;
experimental-genesis 2123         if (vInv.size() > 50000)
experimental-genesis 2124         {
experimental-genesis 2125             pfrom->Misbehaving(20);
experimental-genesis 2126             return error("message getdata size() = %d", vInv.size());
experimental-genesis 2127         }
experimental-genesis 2128 
experimental-genesis 2129         BOOST_FOREACH(const CInv& inv, vInv)
experimental-genesis 2130         {
experimental-genesis 2131             if (fShutdown)
experimental-genesis 2132                 return true;
experimental-genesis 2133             printf("received getdata for: %s\n", inv.ToString().c_str());
experimental-genesis 2134 
experimental-genesis 2135             if (inv.type == MSG_BLOCK)
experimental-genesis 2136             {
experimental-genesis 2137                 // Send block from disk
experimental-genesis 2138                 map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(inv.hash);
experimental-genesis 2139                 if (mi != mapBlockIndex.end())
experimental-genesis 2140                 {
experimental-genesis 2141                     CBlock block;
experimental-genesis 2142                     block.ReadFromDisk((*mi).second);
experimental-genesis 2143                     pfrom->PushMessage("block", block);
experimental-genesis 2144 
experimental-genesis 2145                     // Trigger them to send a getblocks request for the next batch of inventory
experimental-genesis 2146                     if (inv.hash == pfrom->hashContinue)
experimental-genesis 2147                     {
experimental-genesis 2148                         // Bypass PushInventory, this must send even if redundant,
experimental-genesis 2149                         // and we want it right after the last block so they don't
experimental-genesis 2150                         // wait for other stuff first.
experimental-genesis 2151                         vector<CInv> vInv;
experimental-genesis 2152                         vInv.push_back(CInv(MSG_BLOCK, hashBestChain));
experimental-genesis 2153                         pfrom->PushMessage("inv", vInv);
experimental-genesis 2154                         pfrom->hashContinue = 0;
experimental-genesis 2155                     }
experimental-genesis 2156                 }
experimental-genesis 2157             }
experimental-genesis 2158             else if (inv.IsKnownType())
experimental-genesis 2159             {
experimental-genesis 2160                 // Send stream from relay memory
experimental-genesis 2161                 CRITICAL_BLOCK(cs_mapRelay)
experimental-genesis 2162                 {
experimental-genesis 2163                     map<CInv, CDataStream>::iterator mi = mapRelay.find(inv);
experimental-genesis 2164                     if (mi != mapRelay.end())
experimental-genesis 2165                         pfrom->PushMessage(inv.GetCommand(), (*mi).second);
experimental-genesis 2166                 }
experimental-genesis 2167             }
experimental-genesis 2168 
experimental-genesis 2169             // Track requests for our stuff
experimental-genesis 2170             Inventory(inv.hash);
experimental-genesis 2171         }
experimental-genesis 2172     }
experimental-genesis 2173 
experimental-genesis 2174 
experimental-genesis 2175     else if (strCommand == "getblocks")
experimental-genesis 2176     {
experimental-genesis 2177         CBlockLocator locator;
experimental-genesis 2178         uint256 hashStop;
experimental-genesis 2179         vRecv >> locator >> hashStop;
experimental-genesis 2180 
experimental-genesis 2181         // Find the last block the caller has in the main chain
experimental-genesis 2182         CBlockIndex* pindex = locator.GetBlockIndex();
experimental-genesis 2183 
experimental-genesis 2184         // Send the rest of the chain
experimental-genesis 2185         if (pindex)
experimental-genesis 2186             pindex = pindex->pnext;
experimental-genesis 2187         int nLimit = 500 + locator.GetDistanceBack();
experimental-genesis 2188         unsigned int nBytes = 0;
experimental-genesis 2189         printf("getblocks %d to %s limit %d\n", (pindex ? pindex->nHeight : -1), hashStop.ToString().substr(0,20).c_str(), nLimit);
experimental-genesis 2190         for (; pindex; pindex = pindex->pnext)
experimental-genesis 2191         {
experimental-genesis 2192             if (pindex->GetBlockHash() == hashStop)
experimental-genesis 2193             {
experimental-genesis 2194                 printf("  getblocks stopping at %d %s (%u bytes)\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str(), nBytes);
experimental-genesis 2195                 break;
experimental-genesis 2196             }
experimental-genesis 2197             pfrom->PushInventory(CInv(MSG_BLOCK, pindex->GetBlockHash()));
experimental-genesis 2198             CBlock block;
experimental-genesis 2199             block.ReadFromDisk(pindex, true);
experimental-genesis 2200             nBytes += block.GetSerializeSize(SER_NETWORK);
experimental-genesis 2201             if (--nLimit <= 0 || nBytes >= SendBufferSize()/2)
experimental-genesis 2202             {
experimental-genesis 2203                 // When this block is requested, we'll send an inv that'll make them
experimental-genesis 2204                 // getblocks the next batch of inventory.
experimental-genesis 2205                 printf("  getblocks stopping at limit %d %s (%u bytes)\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str(), nBytes);
experimental-genesis 2206                 pfrom->hashContinue = pindex->GetBlockHash();
experimental-genesis 2207                 break;
experimental-genesis 2208             }
experimental-genesis 2209         }
experimental-genesis 2210     }
experimental-genesis 2211 
experimental-genesis 2212 
experimental-genesis 2213     else if (strCommand == "getheaders")
experimental-genesis 2214     {
experimental-genesis 2215         CBlockLocator locator;
experimental-genesis 2216         uint256 hashStop;
experimental-genesis 2217         vRecv >> locator >> hashStop;
experimental-genesis 2218 
experimental-genesis 2219         CBlockIndex* pindex = NULL;
experimental-genesis 2220         if (locator.IsNull())
experimental-genesis 2221         {
experimental-genesis 2222             // If locator is null, return the hashStop block
experimental-genesis 2223             map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashStop);
experimental-genesis 2224             if (mi == mapBlockIndex.end())
experimental-genesis 2225                 return true;
experimental-genesis 2226             pindex = (*mi).second;
experimental-genesis 2227         }
experimental-genesis 2228         else
experimental-genesis 2229         {
experimental-genesis 2230             // Find the last block the caller has in the main chain
experimental-genesis 2231             pindex = locator.GetBlockIndex();
experimental-genesis 2232             if (pindex)
experimental-genesis 2233                 pindex = pindex->pnext;
experimental-genesis 2234         }
experimental-genesis 2235 
experimental-genesis 2236         vector<CBlock> vHeaders;
experimental-genesis 2237         int nLimit = 2000 + locator.GetDistanceBack();
experimental-genesis 2238         printf("getheaders %d to %s limit %d\n", (pindex ? pindex->nHeight : -1), hashStop.ToString().substr(0,20).c_str(), nLimit);
experimental-genesis 2239         for (; pindex; pindex = pindex->pnext)
experimental-genesis 2240         {
experimental-genesis 2241             vHeaders.push_back(pindex->GetBlockHeader());
experimental-genesis 2242             if (--nLimit <= 0 || pindex->GetBlockHash() == hashStop)
experimental-genesis 2243                 break;
experimental-genesis 2244         }
experimental-genesis 2245         pfrom->PushMessage("headers", vHeaders);
experimental-genesis 2246     }
experimental-genesis 2247 
experimental-genesis 2248 
experimental-genesis 2249     else if (strCommand == "tx")
experimental-genesis 2250     {
experimental-genesis 2251         vector<uint256> vWorkQueue;
experimental-genesis 2252         CDataStream vMsg(vRecv);
experimental-genesis 2253         CTransaction tx;
experimental-genesis 2254         vRecv >> tx;
experimental-genesis 2255 
experimental-genesis 2256         CInv inv(MSG_TX, tx.GetHash());
experimental-genesis 2257         pfrom->AddInventoryKnown(inv);
experimental-genesis 2258 
experimental-genesis 2259         bool fMissingInputs = false;
experimental-genesis 2260         if (tx.AcceptToMemoryPool(true, &fMissingInputs))
experimental-genesis 2261         {
experimental-genesis 2262             SyncWithWallets(tx, NULL, true);
experimental-genesis 2263             RelayMessage(inv, vMsg);
experimental-genesis 2264             mapAlreadyAskedFor.erase(inv);
experimental-genesis 2265             vWorkQueue.push_back(inv.hash);
experimental-genesis 2266 
experimental-genesis 2267             // Recursively process any orphan transactions that depended on this one
experimental-genesis 2268             for (int i = 0; i < vWorkQueue.size(); i++)
experimental-genesis 2269             {
experimental-genesis 2270                 uint256 hashPrev = vWorkQueue[i];
experimental-genesis 2271                 for (multimap<uint256, CDataStream*>::iterator mi = mapOrphanTransactionsByPrev.lower_bound(hashPrev);
experimental-genesis 2272                      mi != mapOrphanTransactionsByPrev.upper_bound(hashPrev);
experimental-genesis 2273                      ++mi)
experimental-genesis 2274                 {
experimental-genesis 2275                     const CDataStream& vMsg = *((*mi).second);
experimental-genesis 2276                     CTransaction tx;
experimental-genesis 2277                     CDataStream(vMsg) >> tx;
experimental-genesis 2278                     CInv inv(MSG_TX, tx.GetHash());
experimental-genesis 2279 
experimental-genesis 2280                     if (tx.AcceptToMemoryPool(true))
experimental-genesis 2281                     {
experimental-genesis 2282                         printf("   accepted orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str());
experimental-genesis 2283                         SyncWithWallets(tx, NULL, true);
experimental-genesis 2284                         RelayMessage(inv, vMsg);
experimental-genesis 2285                         mapAlreadyAskedFor.erase(inv);
experimental-genesis 2286                         vWorkQueue.push_back(inv.hash);
experimental-genesis 2287                     }
experimental-genesis 2288                 }
experimental-genesis 2289             }
experimental-genesis 2290 
experimental-genesis 2291             BOOST_FOREACH(uint256 hash, vWorkQueue)
experimental-genesis 2292                 EraseOrphanTx(hash);
experimental-genesis 2293         }
experimental-genesis 2294         else if (fMissingInputs)
experimental-genesis 2295         {
experimental-genesis 2296             printf("storing orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str());
experimental-genesis 2297             AddOrphanTx(vMsg);
experimental-genesis 2298 
experimental-genesis 2299             // DoS prevention: do not allow mapOrphanTransactions to grow unbounded
experimental-genesis 2300             int nEvicted = LimitOrphanTxSize(MAX_ORPHAN_TRANSACTIONS);
experimental-genesis 2301             if (nEvicted > 0)
experimental-genesis 2302                 printf("mapOrphan overflow, removed %d tx\n", nEvicted);
experimental-genesis 2303         }
experimental-genesis 2304         if (tx.nDoS) pfrom->Misbehaving(tx.nDoS);
experimental-genesis 2305     }
experimental-genesis 2306 
experimental-genesis 2307 
experimental-genesis 2308     else if (strCommand == "block")
experimental-genesis 2309     {
experimental-genesis 2310         CBlock block;
experimental-genesis 2311         vRecv >> block;
experimental-genesis 2312 
experimental-genesis 2313         printf("received block %s\n", block.GetHash().ToString().substr(0,20).c_str());
experimental-genesis 2314         // block.print();
experimental-genesis 2315 
experimental-genesis 2316         CInv inv(MSG_BLOCK, block.GetHash());
experimental-genesis 2317         pfrom->AddInventoryKnown(inv);
experimental-genesis 2318 
experimental-genesis 2319         if (ProcessBlock(pfrom, &block))
experimental-genesis 2320             mapAlreadyAskedFor.erase(inv);
experimental-genesis 2321         if (block.nDoS) pfrom->Misbehaving(block.nDoS);
experimental-genesis 2322     }
experimental-genesis 2323 
experimental-genesis 2324 
experimental-genesis 2325     else if (strCommand == "getaddr")
experimental-genesis 2326     {
experimental-genesis 2327         // Nodes rebroadcast an addr every 24 hours
experimental-genesis 2328         pfrom->vAddrToSend.clear();
experimental-genesis 2329         int64 nSince = GetAdjustedTime() - 3 * 60 * 60; // in the last 3 hours
experimental-genesis 2330         CRITICAL_BLOCK(cs_mapAddresses)
experimental-genesis 2331         {
experimental-genesis 2332             unsigned int nCount = 0;
experimental-genesis 2333             BOOST_FOREACH(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
experimental-genesis 2334             {
experimental-genesis 2335                 const CAddress& addr = item.second;
experimental-genesis 2336                 if (addr.nTime > nSince)
experimental-genesis 2337                     nCount++;
experimental-genesis 2338             }
experimental-genesis 2339             BOOST_FOREACH(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
experimental-genesis 2340             {
experimental-genesis 2341                 const CAddress& addr = item.second;
experimental-genesis 2342                 if (addr.nTime > nSince && GetRand(nCount) < 2500)
experimental-genesis 2343                     pfrom->PushAddress(addr);
experimental-genesis 2344             }
experimental-genesis 2345         }
experimental-genesis 2346     }
experimental-genesis 2347 
experimental-genesis 2348 
experimental-genesis 2349     else if (strCommand == "checkorder")
experimental-genesis 2350     {
experimental-genesis 2351         uint256 hashReply;
experimental-genesis 2352         vRecv >> hashReply;
experimental-genesis 2353 
experimental-genesis 2354         if (!GetBoolArg("-allowreceivebyip"))
experimental-genesis 2355         {
experimental-genesis 2356             pfrom->PushMessage("reply", hashReply, (int)2, string(""));
experimental-genesis 2357             return true;
experimental-genesis 2358         }
experimental-genesis 2359 
experimental-genesis 2360         CWalletTx order;
experimental-genesis 2361         vRecv >> order;
experimental-genesis 2362 
experimental-genesis 2363         /// we have a chance to check the order here
experimental-genesis 2364 
experimental-genesis 2365         // Keep giving the same key to the same ip until they use it
experimental-genesis 2366         if (!mapReuseKey.count(pfrom->addr.ip))
experimental-genesis 2367             pwalletMain->GetKeyFromPool(mapReuseKey[pfrom->addr.ip], true);
experimental-genesis 2368 
experimental-genesis 2369         // Send back approval of order and pubkey to use
experimental-genesis 2370         CScript scriptPubKey;
experimental-genesis 2371         scriptPubKey << mapReuseKey[pfrom->addr.ip] << OP_CHECKSIG;
experimental-genesis 2372         pfrom->PushMessage("reply", hashReply, (int)0, scriptPubKey);
experimental-genesis 2373     }
experimental-genesis 2374 
experimental-genesis 2375 
experimental-genesis 2376     else if (strCommand == "reply")
experimental-genesis 2377     {
experimental-genesis 2378         uint256 hashReply;
experimental-genesis 2379         vRecv >> hashReply;
experimental-genesis 2380 
experimental-genesis 2381         CRequestTracker tracker;
experimental-genesis 2382         CRITICAL_BLOCK(pfrom->cs_mapRequests)
experimental-genesis 2383         {
experimental-genesis 2384             map<uint256, CRequestTracker>::iterator mi = pfrom->mapRequests.find(hashReply);
experimental-genesis 2385             if (mi != pfrom->mapRequests.end())
experimental-genesis 2386             {
experimental-genesis 2387                 tracker = (*mi).second;
experimental-genesis 2388                 pfrom->mapRequests.erase(mi);
experimental-genesis 2389             }
experimental-genesis 2390         }
experimental-genesis 2391         if (!tracker.IsNull())
experimental-genesis 2392             tracker.fn(tracker.param1, vRecv);
experimental-genesis 2393     }
experimental-genesis 2394 
experimental-genesis 2395 
experimental-genesis 2396     else if (strCommand == "ping")
experimental-genesis 2397     {
experimental-genesis 2398     }
experimental-genesis 2399 
experimental-genesis 2400 
experimental-genesis 2401     else if (strCommand == "alert")
experimental-genesis 2402     {
experimental-genesis 2403         CAlert alert;
experimental-genesis 2404         vRecv >> alert;
experimental-genesis 2405 
experimental-genesis 2406         if (alert.ProcessAlert())
experimental-genesis 2407         {
experimental-genesis 2408             // Relay
experimental-genesis 2409             pfrom->setKnown.insert(alert.GetHash());
experimental-genesis 2410             CRITICAL_BLOCK(cs_vNodes)
experimental-genesis 2411                 BOOST_FOREACH(CNode* pnode, vNodes)
experimental-genesis 2412                     alert.RelayTo(pnode);
experimental-genesis 2413         }
experimental-genesis 2414     }
experimental-genesis 2415 
experimental-genesis 2416 
experimental-genesis 2417     else
experimental-genesis 2418     {
experimental-genesis 2419         // Ignore unknown commands for extensibility
experimental-genesis 2420     }
experimental-genesis 2421 
experimental-genesis 2422 
experimental-genesis 2423     // Update the last seen time for this node's address
experimental-genesis 2424     if (pfrom->fNetworkNode)
experimental-genesis 2425         if (strCommand == "version" || strCommand == "addr" || strCommand == "inv" || strCommand == "getdata" || strCommand == "ping")
experimental-genesis 2426             AddressCurrentlyConnected(pfrom->addr);
experimental-genesis 2427 
experimental-genesis 2428 
experimental-genesis 2429     return true;
experimental-genesis 2430 }
experimental-genesis 2431 
experimental-genesis 2432 bool ProcessMessages(CNode* pfrom)
experimental-genesis 2433 {
experimental-genesis 2434     CDataStream& vRecv = pfrom->vRecv;
experimental-genesis 2435     if (vRecv.empty())
experimental-genesis 2436         return true;
experimental-genesis 2437     //if (fDebug)
experimental-genesis 2438     //    printf("ProcessMessages(%u bytes)\n", vRecv.size());
experimental-genesis 2439 
experimental-genesis 2440     //
experimental-genesis 2441     // Message format
experimental-genesis 2442     //  (4) message start
experimental-genesis 2443     //  (12) command
experimental-genesis 2444     //  (4) size
experimental-genesis 2445     //  (4) checksum
experimental-genesis 2446     //  (x) data
experimental-genesis 2447     //
experimental-genesis 2448 
experimental-genesis 2449     loop
experimental-genesis 2450     {
experimental-genesis 2451         // Scan for message start
experimental-genesis 2452         CDataStream::iterator pstart = search(vRecv.begin(), vRecv.end(), BEGIN(pchMessageStart), END(pchMessageStart));
experimental-genesis 2453         int nHeaderSize = vRecv.GetSerializeSize(CMessageHeader());
experimental-genesis 2454         if (vRecv.end() - pstart < nHeaderSize)
experimental-genesis 2455         {
experimental-genesis 2456             if (vRecv.size() > nHeaderSize)
experimental-genesis 2457             {
experimental-genesis 2458                 printf("\n\nPROCESSMESSAGE MESSAGESTART NOT FOUND\n\n");
experimental-genesis 2459                 vRecv.erase(vRecv.begin(), vRecv.end() - nHeaderSize);
experimental-genesis 2460             }
experimental-genesis 2461             break;
experimental-genesis 2462         }
experimental-genesis 2463         if (pstart - vRecv.begin() > 0)
experimental-genesis 2464             printf("\n\nPROCESSMESSAGE SKIPPED %d BYTES\n\n", pstart - vRecv.begin());
experimental-genesis 2465         vRecv.erase(vRecv.begin(), pstart);
experimental-genesis 2466 
experimental-genesis 2467         // Read header
experimental-genesis 2468         vector<char> vHeaderSave(vRecv.begin(), vRecv.begin() + nHeaderSize);
experimental-genesis 2469         CMessageHeader hdr;
experimental-genesis 2470         vRecv >> hdr;
experimental-genesis 2471         if (!hdr.IsValid())
experimental-genesis 2472         {
experimental-genesis 2473             printf("\n\nPROCESSMESSAGE: ERRORS IN HEADER %s\n\n\n", hdr.GetCommand().c_str());
experimental-genesis 2474             continue;
experimental-genesis 2475         }
experimental-genesis 2476         string strCommand = hdr.GetCommand();
experimental-genesis 2477 
experimental-genesis 2478         // Message size
experimental-genesis 2479         unsigned int nMessageSize = hdr.nMessageSize;
experimental-genesis 2480         if (nMessageSize > MAX_SIZE)
experimental-genesis 2481         {
experimental-genesis 2482             printf("ProcessMessage(%s, %u bytes) : nMessageSize > MAX_SIZE\n", strCommand.c_str(), nMessageSize);
experimental-genesis 2483             continue;
experimental-genesis 2484         }
experimental-genesis 2485         if (nMessageSize > vRecv.size())
experimental-genesis 2486         {
experimental-genesis 2487             // Rewind and wait for rest of message
experimental-genesis 2488             vRecv.insert(vRecv.begin(), vHeaderSave.begin(), vHeaderSave.end());
experimental-genesis 2489             break;
experimental-genesis 2490         }
experimental-genesis 2491 
experimental-genesis 2492         // Checksum
experimental-genesis 2493         if (vRecv.GetVersion() >= 209)
experimental-genesis 2494         {
experimental-genesis 2495             uint256 hash = Hash(vRecv.begin(), vRecv.begin() + nMessageSize);
experimental-genesis 2496             unsigned int nChecksum = 0;
experimental-genesis 2497             memcpy(&nChecksum, &hash, sizeof(nChecksum));
experimental-genesis 2498             if (nChecksum != hdr.nChecksum)
experimental-genesis 2499             {
experimental-genesis 2500                 printf("ProcessMessage(%s, %u bytes) : CHECKSUM ERROR nChecksum=%08x hdr.nChecksum=%08x\n",
experimental-genesis 2501                        strCommand.c_str(), nMessageSize, nChecksum, hdr.nChecksum);
experimental-genesis 2502                 continue;
experimental-genesis 2503             }
experimental-genesis 2504         }
experimental-genesis 2505 
experimental-genesis 2506         // Copy message to its own buffer
experimental-genesis 2507         CDataStream vMsg(vRecv.begin(), vRecv.begin() + nMessageSize, vRecv.nType, vRecv.nVersion);
experimental-genesis 2508         vRecv.ignore(nMessageSize);
experimental-genesis 2509 
experimental-genesis 2510         // Process message
experimental-genesis 2511         bool fRet = false;
experimental-genesis 2512         try
experimental-genesis 2513         {
experimental-genesis 2514             CRITICAL_BLOCK(cs_main)
experimental-genesis 2515                 fRet = ProcessMessage(pfrom, strCommand, vMsg);
experimental-genesis 2516             if (fShutdown)
experimental-genesis 2517                 return true;
experimental-genesis 2518         }
experimental-genesis 2519         catch (std::ios_base::failure& e)
experimental-genesis 2520         {
experimental-genesis 2521             if (strstr(e.what(), "end of data"))
experimental-genesis 2522             {
experimental-genesis 2523                 // Allow exceptions from underlength message on vRecv
experimental-genesis 2524                 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());
experimental-genesis 2525             }
experimental-genesis 2526             else if (strstr(e.what(), "size too large"))
experimental-genesis 2527             {
experimental-genesis 2528                 // Allow exceptions from overlong size
experimental-genesis 2529                 printf("ProcessMessage(%s, %u bytes) : Exception '%s' caught\n", strCommand.c_str(), nMessageSize, e.what());
experimental-genesis 2530             }
experimental-genesis 2531             else
experimental-genesis 2532             {
experimental-genesis 2533                 PrintExceptionContinue(&e, "ProcessMessage()");
experimental-genesis 2534             }
experimental-genesis 2535         }
experimental-genesis 2536         catch (std::exception& e) {
experimental-genesis 2537             PrintExceptionContinue(&e, "ProcessMessage()");
experimental-genesis 2538         } catch (...) {
experimental-genesis 2539             PrintExceptionContinue(NULL, "ProcessMessage()");
experimental-genesis 2540         }
experimental-genesis 2541 
experimental-genesis 2542         if (!fRet)
experimental-genesis 2543             printf("ProcessMessage(%s, %u bytes) FAILED\n", strCommand.c_str(), nMessageSize);
experimental-genesis 2544     }
experimental-genesis 2545 
experimental-genesis 2546     vRecv.Compact();
experimental-genesis 2547     return true;
experimental-genesis 2548 }
experimental-genesis 2549 
experimental-genesis 2550 
experimental-genesis 2551 bool SendMessages(CNode* pto, bool fSendTrickle)
experimental-genesis 2552 {
experimental-genesis 2553     CRITICAL_BLOCK(cs_main)
experimental-genesis 2554     {
experimental-genesis 2555         // Don't send anything until we get their version message
experimental-genesis 2556         if (pto->nVersion == 0)
experimental-genesis 2557             return true;
experimental-genesis 2558 
experimental-genesis 2559         // Keep-alive ping
experimental-genesis 2560         if (pto->nLastSend && GetTime() - pto->nLastSend > 30 * 60 && pto->vSend.empty())
experimental-genesis 2561             pto->PushMessage("ping");
experimental-genesis 2562 
experimental-genesis 2563         // Resend wallet transactions that haven't gotten in a block yet
experimental-genesis 2564         ResendWalletTransactions();
experimental-genesis 2565 
experimental-genesis 2566         // Address refresh broadcast
experimental-genesis 2567         static int64 nLastRebroadcast;
experimental-genesis 2568         if (GetTime() - nLastRebroadcast > 24 * 60 * 60)
experimental-genesis 2569         {
experimental-genesis 2570             nLastRebroadcast = GetTime();
experimental-genesis 2571             CRITICAL_BLOCK(cs_vNodes)
experimental-genesis 2572             {
experimental-genesis 2573                 BOOST_FOREACH(CNode* pnode, vNodes)
experimental-genesis 2574                 {
experimental-genesis 2575                     // Periodically clear setAddrKnown to allow refresh broadcasts
experimental-genesis 2576                     pnode->setAddrKnown.clear();
experimental-genesis 2577 
experimental-genesis 2578                     // Rebroadcast our address
experimental-genesis 2579                     if (addrLocalHost.IsRoutable() && !fUseProxy)
experimental-genesis 2580                     {
experimental-genesis 2581                         CAddress addr(addrLocalHost);
experimental-genesis 2582                         addr.nTime = GetAdjustedTime();
experimental-genesis 2583                         pnode->PushAddress(addr);
experimental-genesis 2584                     }
experimental-genesis 2585                 }
experimental-genesis 2586             }
experimental-genesis 2587         }
experimental-genesis 2588 
experimental-genesis 2589         // Clear out old addresses periodically so it's not too much work at once
experimental-genesis 2590         static int64 nLastClear;
experimental-genesis 2591         if (nLastClear == 0)
experimental-genesis 2592             nLastClear = GetTime();
experimental-genesis 2593         if (GetTime() - nLastClear > 10 * 60 && vNodes.size() >= 3)
experimental-genesis 2594         {
experimental-genesis 2595             nLastClear = GetTime();
experimental-genesis 2596             CRITICAL_BLOCK(cs_mapAddresses)
experimental-genesis 2597             {
experimental-genesis 2598                 CAddrDB addrdb;
experimental-genesis 2599                 int64 nSince = GetAdjustedTime() - 14 * 24 * 60 * 60;
experimental-genesis 2600                 for (map<vector<unsigned char>, CAddress>::iterator mi = mapAddresses.begin();
experimental-genesis 2601                      mi != mapAddresses.end();)
experimental-genesis 2602                 {
experimental-genesis 2603                     const CAddress& addr = (*mi).second;
experimental-genesis 2604                     if (addr.nTime < nSince)
experimental-genesis 2605                     {
experimental-genesis 2606                         if (mapAddresses.size() < 1000 || GetTime() > nLastClear + 20)
experimental-genesis 2607                             break;
experimental-genesis 2608                         addrdb.EraseAddress(addr);
experimental-genesis 2609                         mapAddresses.erase(mi++);
experimental-genesis 2610                     }
experimental-genesis 2611                     else
experimental-genesis 2612                         mi++;
experimental-genesis 2613                 }
experimental-genesis 2614             }
experimental-genesis 2615         }
experimental-genesis 2616 
experimental-genesis 2617 
experimental-genesis 2618         //
experimental-genesis 2619         // Message: addr
experimental-genesis 2620         //
experimental-genesis 2621         if (fSendTrickle)
experimental-genesis 2622         {
experimental-genesis 2623             vector<CAddress> vAddr;
experimental-genesis 2624             vAddr.reserve(pto->vAddrToSend.size());
experimental-genesis 2625             BOOST_FOREACH(const CAddress& addr, pto->vAddrToSend)
experimental-genesis 2626             {
experimental-genesis 2627                 // returns true if wasn't already contained in the set
experimental-genesis 2628                 if (pto->setAddrKnown.insert(addr).second)
experimental-genesis 2629                 {
experimental-genesis 2630                     vAddr.push_back(addr);
experimental-genesis 2631                     // receiver rejects addr messages larger than 1000
experimental-genesis 2632                     if (vAddr.size() >= 1000)
experimental-genesis 2633                     {
experimental-genesis 2634                         pto->PushMessage("addr", vAddr);
experimental-genesis 2635                         vAddr.clear();
experimental-genesis 2636                     }
experimental-genesis 2637                 }
experimental-genesis 2638             }
experimental-genesis 2639             pto->vAddrToSend.clear();
experimental-genesis 2640             if (!vAddr.empty())
experimental-genesis 2641                 pto->PushMessage("addr", vAddr);
experimental-genesis 2642         }
experimental-genesis 2643 
experimental-genesis 2644 
experimental-genesis 2645         //
experimental-genesis 2646         // Message: inventory
experimental-genesis 2647         //
experimental-genesis 2648         vector<CInv> vInv;
experimental-genesis 2649         vector<CInv> vInvWait;
experimental-genesis 2650         CRITICAL_BLOCK(pto->cs_inventory)
experimental-genesis 2651         {
experimental-genesis 2652             vInv.reserve(pto->vInventoryToSend.size());
experimental-genesis 2653             vInvWait.reserve(pto->vInventoryToSend.size());
experimental-genesis 2654             BOOST_FOREACH(const CInv& inv, pto->vInventoryToSend)
experimental-genesis 2655             {
experimental-genesis 2656                 if (pto->setInventoryKnown.count(inv))
experimental-genesis 2657                     continue;
experimental-genesis 2658 
experimental-genesis 2659                 // trickle out tx inv to protect privacy
experimental-genesis 2660                 if (inv.type == MSG_TX && !fSendTrickle)
experimental-genesis 2661                 {
experimental-genesis 2662                     // 1/4 of tx invs blast to all immediately
experimental-genesis 2663                     static uint256 hashSalt;
experimental-genesis 2664                     if (hashSalt == 0)
experimental-genesis 2665                         RAND_bytes((unsigned char*)&hashSalt, sizeof(hashSalt));
experimental-genesis 2666                     uint256 hashRand = inv.hash ^ hashSalt;
experimental-genesis 2667                     hashRand = Hash(BEGIN(hashRand), END(hashRand));
experimental-genesis 2668                     bool fTrickleWait = ((hashRand & 3) != 0);
experimental-genesis 2669 
experimental-genesis 2670                     // always trickle our own transactions
experimental-genesis 2671                     if (!fTrickleWait)
experimental-genesis 2672                     {
experimental-genesis 2673                         CWalletTx wtx;
experimental-genesis 2674                         if (GetTransaction(inv.hash, wtx))
experimental-genesis 2675                             if (wtx.fFromMe)
experimental-genesis 2676                                 fTrickleWait = true;
experimental-genesis 2677                     }
experimental-genesis 2678 
experimental-genesis 2679                     if (fTrickleWait)
experimental-genesis 2680                     {
experimental-genesis 2681                         vInvWait.push_back(inv);
experimental-genesis 2682                         continue;
experimental-genesis 2683                     }
experimental-genesis 2684                 }
experimental-genesis 2685 
experimental-genesis 2686                 // returns true if wasn't already contained in the set
experimental-genesis 2687                 if (pto->setInventoryKnown.insert(inv).second)
experimental-genesis 2688                 {
experimental-genesis 2689                     vInv.push_back(inv);
experimental-genesis 2690                     if (vInv.size() >= 1000)
experimental-genesis 2691                     {
experimental-genesis 2692                         pto->PushMessage("inv", vInv);
experimental-genesis 2693                         vInv.clear();
experimental-genesis 2694                     }
experimental-genesis 2695                 }
experimental-genesis 2696             }
experimental-genesis 2697             pto->vInventoryToSend = vInvWait;
experimental-genesis 2698         }
experimental-genesis 2699         if (!vInv.empty())
experimental-genesis 2700             pto->PushMessage("inv", vInv);
experimental-genesis 2701 
experimental-genesis 2702 
experimental-genesis 2703         //
experimental-genesis 2704         // Message: getdata
experimental-genesis 2705         //
experimental-genesis 2706         vector<CInv> vGetData;
experimental-genesis 2707         int64 nNow = GetTime() * 1000000;
experimental-genesis 2708         CTxDB txdb("r");
experimental-genesis 2709         while (!pto->mapAskFor.empty() && (*pto->mapAskFor.begin()).first <= nNow)
experimental-genesis 2710         {
experimental-genesis 2711             const CInv& inv = (*pto->mapAskFor.begin()).second;
experimental-genesis 2712             if (!AlreadyHave(txdb, inv))
experimental-genesis 2713             {
experimental-genesis 2714                 printf("sending getdata: %s\n", inv.ToString().c_str());
experimental-genesis 2715                 vGetData.push_back(inv);
experimental-genesis 2716                 if (vGetData.size() >= 1000)
experimental-genesis 2717                 {
experimental-genesis 2718                     pto->PushMessage("getdata", vGetData);
experimental-genesis 2719                     vGetData.clear();
experimental-genesis 2720                 }
experimental-genesis 2721             }
experimental-genesis 2722             mapAlreadyAskedFor[inv] = nNow;
experimental-genesis 2723             pto->mapAskFor.erase(pto->mapAskFor.begin());
experimental-genesis 2724         }
experimental-genesis 2725         if (!vGetData.empty())
experimental-genesis 2726             pto->PushMessage("getdata", vGetData);
experimental-genesis 2727 
experimental-genesis 2728     }
experimental-genesis 2729     return true;
experimental-genesis 2730 }
experimental-genesis 2731 
experimental-genesis 2732 
experimental-genesis 2733 
experimental-genesis 2734 
experimental-genesis 2735 
experimental-genesis 2736 
experimental-genesis 2737 
experimental-genesis 2738 
experimental-genesis 2739 
experimental-genesis 2740 
experimental-genesis 2741 
experimental-genesis 2742 
experimental-genesis 2743 
experimental-genesis 2744 
experimental-genesis 2745 //////////////////////////////////////////////////////////////////////////////
experimental-genesis 2746 //
experimental-genesis 2747 // BitcoinMiner
experimental-genesis 2748 //
experimental-genesis 2749 
experimental-genesis 2750 int static FormatHashBlocks(void* pbuffer, unsigned int len)
experimental-genesis 2751 {
experimental-genesis 2752     unsigned char* pdata = (unsigned char*)pbuffer;
experimental-genesis 2753     unsigned int blocks = 1 + ((len + 8) / 64);
experimental-genesis 2754     unsigned char* pend = pdata + 64 * blocks;
experimental-genesis 2755     memset(pdata + len, 0, 64 * blocks - len);
experimental-genesis 2756     pdata[len] = 0x80;
experimental-genesis 2757     unsigned int bits = len * 8;
experimental-genesis 2758     pend[-1] = (bits >> 0) & 0xff;
experimental-genesis 2759     pend[-2] = (bits >> 8) & 0xff;
experimental-genesis 2760     pend[-3] = (bits >> 16) & 0xff;
experimental-genesis 2761     pend[-4] = (bits >> 24) & 0xff;
experimental-genesis 2762     return blocks;
experimental-genesis 2763 }
experimental-genesis 2764 
experimental-genesis 2765 static const unsigned int pSHA256InitState[8] =
experimental-genesis 2766 {0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};
experimental-genesis 2767 
experimental-genesis 2768 void SHA256Transform(void* pstate, void* pinput, const void* pinit)
experimental-genesis 2769 {
experimental-genesis 2770     SHA256_CTX ctx;
experimental-genesis 2771     unsigned char data[64];
experimental-genesis 2772 
experimental-genesis 2773     SHA256_Init(&ctx);
experimental-genesis 2774 
experimental-genesis 2775     for (int i = 0; i < 16; i++)
experimental-genesis 2776         ((uint32_t*)data)[i] = ByteReverse(((uint32_t*)pinput)[i]);
experimental-genesis 2777 
experimental-genesis 2778     for (int i = 0; i < 8; i++)
experimental-genesis 2779         ctx.h[i] = ((uint32_t*)pinit)[i];
experimental-genesis 2780 
experimental-genesis 2781     SHA256_Update(&ctx, data, sizeof(data));
experimental-genesis 2782     for (int i = 0; i < 8; i++) 
experimental-genesis 2783         ((uint32_t*)pstate)[i] = ctx.h[i];
experimental-genesis 2784 }
experimental-genesis 2785 
experimental-genesis 2786 //
experimental-genesis 2787 // ScanHash scans nonces looking for a hash with at least some zero bits.
experimental-genesis 2788 // It operates on big endian data.  Caller does the byte reversing.
experimental-genesis 2789 // All input buffers are 16-byte aligned.  nNonce is usually preserved
experimental-genesis 2790 // between calls, but periodically or if nNonce is 0xffff0000 or above,
experimental-genesis 2791 // the block is rebuilt and nNonce starts over at zero.
experimental-genesis 2792 //
experimental-genesis 2793 unsigned int static ScanHash_CryptoPP(char* pmidstate, char* pdata, char* phash1, char* phash, unsigned int& nHashesDone)
experimental-genesis 2794 {
experimental-genesis 2795     unsigned int& nNonce = *(unsigned int*)(pdata + 12);
experimental-genesis 2796     for (;;)
experimental-genesis 2797     {
experimental-genesis 2798         // Crypto++ SHA-256
experimental-genesis 2799         // Hash pdata using pmidstate as the starting state into
experimental-genesis 2800         // preformatted buffer phash1, then hash phash1 into phash
experimental-genesis 2801         nNonce++;
experimental-genesis 2802         SHA256Transform(phash1, pdata, pmidstate);
experimental-genesis 2803         SHA256Transform(phash, phash1, pSHA256InitState);
experimental-genesis 2804 
experimental-genesis 2805         // Return the nonce if the hash has at least some zero bits,
experimental-genesis 2806         // caller will check if it has enough to reach the target
experimental-genesis 2807         if (((unsigned short*)phash)[14] == 0)
experimental-genesis 2808             return nNonce;
experimental-genesis 2809 
experimental-genesis 2810         // If nothing found after trying for a while, return -1
experimental-genesis 2811         if ((nNonce & 0xffff) == 0)
experimental-genesis 2812         {
experimental-genesis 2813             nHashesDone = 0xffff+1;
experimental-genesis 2814             return -1;
experimental-genesis 2815         }
experimental-genesis 2816     }
experimental-genesis 2817 }
experimental-genesis 2818 
experimental-genesis 2819 // Some explaining would be appreciated
experimental-genesis 2820 class COrphan
experimental-genesis 2821 {
experimental-genesis 2822 public:
experimental-genesis 2823     CTransaction* ptx;
experimental-genesis 2824     set<uint256> setDependsOn;
experimental-genesis 2825     double dPriority;
experimental-genesis 2826 
experimental-genesis 2827     COrphan(CTransaction* ptxIn)
experimental-genesis 2828     {
experimental-genesis 2829         ptx = ptxIn;
experimental-genesis 2830         dPriority = 0;
experimental-genesis 2831     }
experimental-genesis 2832 
experimental-genesis 2833     void print() const
experimental-genesis 2834     {
experimental-genesis 2835         printf("COrphan(hash=%s, dPriority=%.1f)\n", ptx->GetHash().ToString().substr(0,10).c_str(), dPriority);
experimental-genesis 2836         BOOST_FOREACH(uint256 hash, setDependsOn)
experimental-genesis 2837             printf("   setDependsOn %s\n", hash.ToString().substr(0,10).c_str());
experimental-genesis 2838     }
experimental-genesis 2839 };
experimental-genesis 2840 
experimental-genesis 2841 
experimental-genesis 2842 CBlock* CreateNewBlock(CReserveKey& reservekey)
experimental-genesis 2843 {
experimental-genesis 2844     CBlockIndex* pindexPrev = pindexBest;
experimental-genesis 2845 
experimental-genesis 2846     // Create new block
experimental-genesis 2847     auto_ptr<CBlock> pblock(new CBlock());
experimental-genesis 2848     if (!pblock.get())
experimental-genesis 2849         return NULL;
experimental-genesis 2850 
experimental-genesis 2851     // Create coinbase tx
experimental-genesis 2852     CTransaction txNew;
experimental-genesis 2853     txNew.vin.resize(1);
experimental-genesis 2854     txNew.vin[0].prevout.SetNull();
experimental-genesis 2855     txNew.vout.resize(1);
experimental-genesis 2856     txNew.vout[0].scriptPubKey << reservekey.GetReservedKey() << OP_CHECKSIG;
experimental-genesis 2857 
experimental-genesis 2858     // Add our coinbase tx as first transaction
experimental-genesis 2859     pblock->vtx.push_back(txNew);
experimental-genesis 2860 
experimental-genesis 2861     // Collect memory pool transactions into the block
experimental-genesis 2862     int64 nFees = 0;
experimental-genesis 2863     CRITICAL_BLOCK(cs_main)
experimental-genesis 2864     CRITICAL_BLOCK(cs_mapTransactions)
experimental-genesis 2865     {
experimental-genesis 2866         CTxDB txdb("r");
experimental-genesis 2867 
experimental-genesis 2868         // Priority order to process transactions
experimental-genesis 2869         list<COrphan> vOrphan; // list memory doesn't move
experimental-genesis 2870         map<uint256, vector<COrphan*> > mapDependers;
experimental-genesis 2871         multimap<double, CTransaction*> mapPriority;
experimental-genesis 2872         for (map<uint256, CTransaction>::iterator mi = mapTransactions.begin(); mi != mapTransactions.end(); ++mi)
experimental-genesis 2873         {
experimental-genesis 2874             CTransaction& tx = (*mi).second;
experimental-genesis 2875             if (tx.IsCoinBase() || !tx.IsFinal())
experimental-genesis 2876                 continue;
experimental-genesis 2877 
experimental-genesis 2878             COrphan* porphan = NULL;
experimental-genesis 2879             double dPriority = 0;
experimental-genesis 2880             BOOST_FOREACH(const CTxIn& txin, tx.vin)
experimental-genesis 2881             {
experimental-genesis 2882                 // Read prev transaction
experimental-genesis 2883                 CTransaction txPrev;
experimental-genesis 2884                 CTxIndex txindex;
experimental-genesis 2885                 if (!txPrev.ReadFromDisk(txdb, txin.prevout, txindex))
experimental-genesis 2886                 {
experimental-genesis 2887                     // Has to wait for dependencies
experimental-genesis 2888                     if (!porphan)
experimental-genesis 2889                     {
experimental-genesis 2890                         // Use list for automatic deletion
experimental-genesis 2891                         vOrphan.push_back(COrphan(&tx));
experimental-genesis 2892                         porphan = &vOrphan.back();
experimental-genesis 2893                     }
experimental-genesis 2894                     mapDependers[txin.prevout.hash].push_back(porphan);
experimental-genesis 2895                     porphan->setDependsOn.insert(txin.prevout.hash);
experimental-genesis 2896                     continue;
experimental-genesis 2897                 }
experimental-genesis 2898                 int64 nValueIn = txPrev.vout[txin.prevout.n].nValue;
experimental-genesis 2899 
experimental-genesis 2900                 // Read block header
experimental-genesis 2901                 int nConf = txindex.GetDepthInMainChain();
experimental-genesis 2902 
experimental-genesis 2903                 dPriority += (double)nValueIn * nConf;
experimental-genesis 2904 
experimental-genesis 2905                 if (fDebug && GetBoolArg("-printpriority"))
experimental-genesis 2906                     printf("priority     nValueIn=%-12I64d nConf=%-5d dPriority=%-20.1f\n", nValueIn, nConf, dPriority);
experimental-genesis 2907             }
experimental-genesis 2908 
experimental-genesis 2909             // Priority is sum(valuein * age) / txsize
experimental-genesis 2910             dPriority /= ::GetSerializeSize(tx, SER_NETWORK);
experimental-genesis 2911 
experimental-genesis 2912             if (porphan)
experimental-genesis 2913                 porphan->dPriority = dPriority;
experimental-genesis 2914             else
experimental-genesis 2915                 mapPriority.insert(make_pair(-dPriority, &(*mi).second));
experimental-genesis 2916 
experimental-genesis 2917             if (fDebug && GetBoolArg("-printpriority"))
experimental-genesis 2918             {
experimental-genesis 2919                 printf("priority %-20.1f %s\n%s", dPriority, tx.GetHash().ToString().substr(0,10).c_str(), tx.ToString().c_str());
experimental-genesis 2920                 if (porphan)
experimental-genesis 2921                     porphan->print();
experimental-genesis 2922                 printf("\n");
experimental-genesis 2923             }
experimental-genesis 2924         }
experimental-genesis 2925 
experimental-genesis 2926         // Collect transactions into block
experimental-genesis 2927         map<uint256, CTxIndex> mapTestPool;
experimental-genesis 2928         uint64 nBlockSize = 1000;
experimental-genesis 2929         int nBlockSigOps = 100;
experimental-genesis 2930         while (!mapPriority.empty())
experimental-genesis 2931         {
experimental-genesis 2932             // Take highest priority transaction off priority queue
experimental-genesis 2933             double dPriority = -(*mapPriority.begin()).first;
experimental-genesis 2934             CTransaction& tx = *(*mapPriority.begin()).second;
experimental-genesis 2935             mapPriority.erase(mapPriority.begin());
experimental-genesis 2936 
experimental-genesis 2937             // Size limits
experimental-genesis 2938             unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK);
experimental-genesis 2939             if (nBlockSize + nTxSize >= MAX_BLOCK_SIZE_GEN)
experimental-genesis 2940                 continue;
experimental-genesis 2941             int nTxSigOps = tx.GetSigOpCount();
experimental-genesis 2942             if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS)
experimental-genesis 2943                 continue;
experimental-genesis 2944 
experimental-genesis 2945             // Transaction fee required depends on block size
experimental-genesis 2946             bool fAllowFree = (nBlockSize + nTxSize < 4000 || CTransaction::AllowFree(dPriority));
experimental-genesis 2947             int64 nMinFee = tx.GetMinFee(nBlockSize, fAllowFree);
experimental-genesis 2948 
experimental-genesis 2949             // Connecting shouldn't fail due to dependency on other memory pool transactions
experimental-genesis 2950             // because we're already processing them in order of dependency
experimental-genesis 2951             map<uint256, CTxIndex> mapTestPoolTmp(mapTestPool);
experimental-genesis 2952             bool fInvalid;
experimental-genesis 2953             if (!tx.ConnectInputs(txdb, mapTestPoolTmp, CDiskTxPos(1,1,1), pindexPrev, nFees, false, true, nMinFee, fInvalid))
experimental-genesis 2954                 continue;
experimental-genesis 2955             swap(mapTestPool, mapTestPoolTmp);
experimental-genesis 2956 
experimental-genesis 2957             // Added
experimental-genesis 2958             pblock->vtx.push_back(tx);
experimental-genesis 2959             nBlockSize += nTxSize;
experimental-genesis 2960             nBlockSigOps += nTxSigOps;
experimental-genesis 2961 
experimental-genesis 2962             // Add transactions that depend on this one to the priority queue
experimental-genesis 2963             uint256 hash = tx.GetHash();
experimental-genesis 2964             if (mapDependers.count(hash))
experimental-genesis 2965             {
experimental-genesis 2966                 BOOST_FOREACH(COrphan* porphan, mapDependers[hash])
experimental-genesis 2967                 {
experimental-genesis 2968                     if (!porphan->setDependsOn.empty())
experimental-genesis 2969                     {
experimental-genesis 2970                         porphan->setDependsOn.erase(hash);
experimental-genesis 2971                         if (porphan->setDependsOn.empty())
experimental-genesis 2972                             mapPriority.insert(make_pair(-porphan->dPriority, porphan->ptx));
experimental-genesis 2973                     }
experimental-genesis 2974                 }
experimental-genesis 2975             }
experimental-genesis 2976         }
experimental-genesis 2977     }
experimental-genesis 2978     pblock->vtx[0].vout[0].nValue = GetBlockValue(pindexPrev->nHeight+1, nFees);
experimental-genesis 2979 
experimental-genesis 2980     // Fill in header
experimental-genesis 2981     pblock->hashPrevBlock  = pindexPrev->GetBlockHash();
experimental-genesis 2982     pblock->hashMerkleRoot = pblock->BuildMerkleTree();
experimental-genesis 2983     pblock->nTime          = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
experimental-genesis 2984     pblock->nBits          = GetNextWorkRequired(pindexPrev, pblock.get());
experimental-genesis 2985     pblock->nNonce         = 0;
experimental-genesis 2986 
experimental-genesis 2987     return pblock.release();
experimental-genesis 2988 }
experimental-genesis 2989 
experimental-genesis 2990 
experimental-genesis 2991 void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce)
experimental-genesis 2992 {
experimental-genesis 2993     // Update nExtraNonce
experimental-genesis 2994     static uint256 hashPrevBlock;
experimental-genesis 2995     if (hashPrevBlock != pblock->hashPrevBlock)
experimental-genesis 2996     {
experimental-genesis 2997         nExtraNonce = 0;
experimental-genesis 2998         hashPrevBlock = pblock->hashPrevBlock;
experimental-genesis 2999     }
experimental-genesis 3000     ++nExtraNonce;
experimental-genesis 3001     pblock->vtx[0].vin[0].scriptSig = CScript() << pblock->nTime << CBigNum(nExtraNonce);
experimental-genesis 3002     pblock->hashMerkleRoot = pblock->BuildMerkleTree();
experimental-genesis 3003 }
experimental-genesis 3004 
experimental-genesis 3005 
experimental-genesis 3006 void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1)
experimental-genesis 3007 {
experimental-genesis 3008     //
experimental-genesis 3009     // Prebuild hash buffers
experimental-genesis 3010     //
experimental-genesis 3011     struct
experimental-genesis 3012     {
experimental-genesis 3013         struct unnamed2
experimental-genesis 3014         {
experimental-genesis 3015             int nVersion;
experimental-genesis 3016             uint256 hashPrevBlock;
experimental-genesis 3017             uint256 hashMerkleRoot;
experimental-genesis 3018             unsigned int nTime;
experimental-genesis 3019             unsigned int nBits;
experimental-genesis 3020             unsigned int nNonce;
experimental-genesis 3021         }
experimental-genesis 3022         block;
experimental-genesis 3023         unsigned char pchPadding0[64];
experimental-genesis 3024         uint256 hash1;
experimental-genesis 3025         unsigned char pchPadding1[64];
experimental-genesis 3026     }
experimental-genesis 3027     tmp;
experimental-genesis 3028     memset(&tmp, 0, sizeof(tmp));
experimental-genesis 3029 
experimental-genesis 3030     tmp.block.nVersion       = pblock->nVersion;
experimental-genesis 3031     tmp.block.hashPrevBlock  = pblock->hashPrevBlock;
experimental-genesis 3032     tmp.block.hashMerkleRoot = pblock->hashMerkleRoot;
experimental-genesis 3033     tmp.block.nTime          = pblock->nTime;
experimental-genesis 3034     tmp.block.nBits          = pblock->nBits;
experimental-genesis 3035     tmp.block.nNonce         = pblock->nNonce;
experimental-genesis 3036 
experimental-genesis 3037     FormatHashBlocks(&tmp.block, sizeof(tmp.block));
experimental-genesis 3038     FormatHashBlocks(&tmp.hash1, sizeof(tmp.hash1));
experimental-genesis 3039 
experimental-genesis 3040     // Byte swap all the input buffer
experimental-genesis 3041     for (int i = 0; i < sizeof(tmp)/4; i++)
experimental-genesis 3042         ((unsigned int*)&tmp)[i] = ByteReverse(((unsigned int*)&tmp)[i]);
experimental-genesis 3043 
experimental-genesis 3044     // Precalc the first half of the first hash, which stays constant
experimental-genesis 3045     SHA256Transform(pmidstate, &tmp.block, pSHA256InitState);
experimental-genesis 3046 
experimental-genesis 3047     memcpy(pdata, &tmp.block, 128);
experimental-genesis 3048     memcpy(phash1, &tmp.hash1, 64);
experimental-genesis 3049 }
experimental-genesis 3050 
experimental-genesis 3051 
experimental-genesis 3052 bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey)
experimental-genesis 3053 {
experimental-genesis 3054     uint256 hash = pblock->GetHash();
experimental-genesis 3055     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
experimental-genesis 3056 
experimental-genesis 3057     if (hash > hashTarget)
experimental-genesis 3058         return false;
experimental-genesis 3059 
experimental-genesis 3060     //// debug print
experimental-genesis 3061     printf("BitcoinMiner:\n");
experimental-genesis 3062     printf("proof-of-work found  \n  hash: %s  \ntarget: %s\n", hash.GetHex().c_str(), hashTarget.GetHex().c_str());
experimental-genesis 3063     pblock->print();
experimental-genesis 3064     printf("%s ", DateTimeStrFormat("%x %H:%M", GetTime()).c_str());
experimental-genesis 3065     printf("generated %s\n", FormatMoney(pblock->vtx[0].vout[0].nValue).c_str());
experimental-genesis 3066 
experimental-genesis 3067     // Found a solution
experimental-genesis 3068     CRITICAL_BLOCK(cs_main)
experimental-genesis 3069     {
experimental-genesis 3070         if (pblock->hashPrevBlock != hashBestChain)
experimental-genesis 3071             return error("BitcoinMiner : generated block is stale");
experimental-genesis 3072 
experimental-genesis 3073         // Remove key from key pool
experimental-genesis 3074         reservekey.KeepKey();
experimental-genesis 3075 
experimental-genesis 3076         // Track how many getdata requests this block gets
experimental-genesis 3077         CRITICAL_BLOCK(wallet.cs_wallet)
experimental-genesis 3078             wallet.mapRequestCount[pblock->GetHash()] = 0;
experimental-genesis 3079 
experimental-genesis 3080         // Process this block the same as if we had received it from another node
experimental-genesis 3081         if (!ProcessBlock(NULL, pblock))
experimental-genesis 3082             return error("BitcoinMiner : ProcessBlock, block not accepted");
experimental-genesis 3083     }
experimental-genesis 3084 
experimental-genesis 3085     return true;
experimental-genesis 3086 }
experimental-genesis 3087 
experimental-genesis 3088 void static ThreadBitcoinMiner(void* parg);
experimental-genesis 3089 
experimental-genesis 3090 void static BitcoinMiner(CWallet *pwallet)
experimental-genesis 3091 {
experimental-genesis 3092     printf("BitcoinMiner started\n");
experimental-genesis 3093     SetThreadPriority(THREAD_PRIORITY_LOWEST);
experimental-genesis 3094 
experimental-genesis 3095     // Each thread has its own key and counter
experimental-genesis 3096     CReserveKey reservekey(pwallet);
experimental-genesis 3097     unsigned int nExtraNonce = 0;
experimental-genesis 3098 
experimental-genesis 3099     while (fGenerateBitcoins)
experimental-genesis 3100     {
experimental-genesis 3101         if (AffinityBugWorkaround(ThreadBitcoinMiner))
experimental-genesis 3102             return;
experimental-genesis 3103         if (fShutdown)
experimental-genesis 3104             return;
experimental-genesis 3105         while (vNodes.empty() || IsInitialBlockDownload())
experimental-genesis 3106         {
experimental-genesis 3107             Sleep(1000);
experimental-genesis 3108             if (fShutdown)
experimental-genesis 3109                 return;
experimental-genesis 3110             if (!fGenerateBitcoins)
experimental-genesis 3111                 return;
experimental-genesis 3112         }
experimental-genesis 3113 
experimental-genesis 3114 
experimental-genesis 3115         //
experimental-genesis 3116         // Create new block
experimental-genesis 3117         //
experimental-genesis 3118         unsigned int nTransactionsUpdatedLast = nTransactionsUpdated;
experimental-genesis 3119         CBlockIndex* pindexPrev = pindexBest;
experimental-genesis 3120 
experimental-genesis 3121         auto_ptr<CBlock> pblock(CreateNewBlock(reservekey));
experimental-genesis 3122         if (!pblock.get())
experimental-genesis 3123             return;
experimental-genesis 3124         IncrementExtraNonce(pblock.get(), pindexPrev, nExtraNonce);
experimental-genesis 3125 
experimental-genesis 3126         printf("Running BitcoinMiner with %d transactions in block\n", pblock->vtx.size());
experimental-genesis 3127 
experimental-genesis 3128 
experimental-genesis 3129         //
experimental-genesis 3130         // Prebuild hash buffers
experimental-genesis 3131         //
experimental-genesis 3132         char pmidstatebuf[32+16]; char* pmidstate = alignup<16>(pmidstatebuf);
experimental-genesis 3133         char pdatabuf[128+16];    char* pdata     = alignup<16>(pdatabuf);
experimental-genesis 3134         char phash1buf[64+16];    char* phash1    = alignup<16>(phash1buf);
experimental-genesis 3135 
experimental-genesis 3136         FormatHashBuffers(pblock.get(), pmidstate, pdata, phash1);
experimental-genesis 3137 
experimental-genesis 3138         unsigned int& nBlockTime = *(unsigned int*)(pdata + 64 + 4);
experimental-genesis 3139         unsigned int& nBlockNonce = *(unsigned int*)(pdata + 64 + 12);
experimental-genesis 3140 
experimental-genesis 3141 
experimental-genesis 3142         //
experimental-genesis 3143         // Search
experimental-genesis 3144         //
experimental-genesis 3145         int64 nStart = GetTime();
experimental-genesis 3146         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
experimental-genesis 3147         uint256 hashbuf[2];
experimental-genesis 3148         uint256& hash = *alignup<16>(hashbuf);
experimental-genesis 3149         loop
experimental-genesis 3150         {
experimental-genesis 3151             unsigned int nHashesDone = 0;
experimental-genesis 3152             unsigned int nNonceFound;
experimental-genesis 3153 
experimental-genesis 3154             // Crypto++ SHA-256
experimental-genesis 3155             nNonceFound = ScanHash_CryptoPP(pmidstate, pdata + 64, phash1,
experimental-genesis 3156                                             (char*)&hash, nHashesDone);
experimental-genesis 3157 
experimental-genesis 3158             // Check if something found
experimental-genesis 3159             if (nNonceFound != -1)
experimental-genesis 3160             {
experimental-genesis 3161                 for (int i = 0; i < sizeof(hash)/4; i++)
experimental-genesis 3162                     ((unsigned int*)&hash)[i] = ByteReverse(((unsigned int*)&hash)[i]);
experimental-genesis 3163 
experimental-genesis 3164                 if (hash <= hashTarget)
experimental-genesis 3165                 {
experimental-genesis 3166                     // Found a solution
experimental-genesis 3167                     pblock->nNonce = ByteReverse(nNonceFound);
experimental-genesis 3168                     assert(hash == pblock->GetHash());
experimental-genesis 3169 
experimental-genesis 3170                     SetThreadPriority(THREAD_PRIORITY_NORMAL);
experimental-genesis 3171                     CheckWork(pblock.get(), *pwalletMain, reservekey);
experimental-genesis 3172                     SetThreadPriority(THREAD_PRIORITY_LOWEST);
experimental-genesis 3173                     break;
experimental-genesis 3174                 }
experimental-genesis 3175             }
experimental-genesis 3176 
experimental-genesis 3177             // Meter hashes/sec
experimental-genesis 3178             static int64 nHashCounter;
experimental-genesis 3179             if (nHPSTimerStart == 0)
experimental-genesis 3180             {
experimental-genesis 3181                 nHPSTimerStart = GetTimeMillis();
experimental-genesis 3182                 nHashCounter = 0;
experimental-genesis 3183             }
experimental-genesis 3184             else
experimental-genesis 3185                 nHashCounter += nHashesDone;
experimental-genesis 3186             if (GetTimeMillis() - nHPSTimerStart > 4000)
experimental-genesis 3187             {
experimental-genesis 3188                 static CCriticalSection cs;
experimental-genesis 3189                 CRITICAL_BLOCK(cs)
experimental-genesis 3190                 {
experimental-genesis 3191                     if (GetTimeMillis() - nHPSTimerStart > 4000)
experimental-genesis 3192                     {
experimental-genesis 3193                         dHashesPerSec = 1000.0 * nHashCounter / (GetTimeMillis() - nHPSTimerStart);
experimental-genesis 3194                         nHPSTimerStart = GetTimeMillis();
experimental-genesis 3195                         nHashCounter = 0;
experimental-genesis 3196                         string strStatus = strprintf("    %.0f khash/s", dHashesPerSec/1000.0);
experimental-genesis 3197                         UIThreadCall(boost::bind(CalledSetStatusBar, strStatus, 0));
experimental-genesis 3198                         static int64 nLogTime;
experimental-genesis 3199                         if (GetTime() - nLogTime > 30 * 60)
experimental-genesis 3200                         {
experimental-genesis 3201                             nLogTime = GetTime();
experimental-genesis 3202                             printf("%s ", DateTimeStrFormat("%x %H:%M", GetTime()).c_str());
experimental-genesis 3203                             printf("hashmeter %3d CPUs %6.0f khash/s\n", vnThreadsRunning[3], dHashesPerSec/1000.0);
experimental-genesis 3204                         }
experimental-genesis 3205                     }
experimental-genesis 3206                 }
experimental-genesis 3207             }
experimental-genesis 3208 
experimental-genesis 3209             // Check for stop or if block needs to be rebuilt
experimental-genesis 3210             if (fShutdown)
experimental-genesis 3211                 return;
experimental-genesis 3212             if (!fGenerateBitcoins)
experimental-genesis 3213                 return;
experimental-genesis 3214             if (fLimitProcessors && vnThreadsRunning[3] > nLimitProcessors)
experimental-genesis 3215                 return;
experimental-genesis 3216             if (vNodes.empty())
experimental-genesis 3217                 break;
experimental-genesis 3218             if (nBlockNonce >= 0xffff0000)
experimental-genesis 3219                 break;
experimental-genesis 3220             if (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60)
experimental-genesis 3221                 break;
experimental-genesis 3222             if (pindexPrev != pindexBest)
experimental-genesis 3223                 break;
experimental-genesis 3224 
experimental-genesis 3225             // Update nTime every few seconds
experimental-genesis 3226             pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
experimental-genesis 3227             nBlockTime = ByteReverse(pblock->nTime);
experimental-genesis 3228         }
experimental-genesis 3229     }
experimental-genesis 3230 }
experimental-genesis 3231 
experimental-genesis 3232 void static ThreadBitcoinMiner(void* parg)
experimental-genesis 3233 {
experimental-genesis 3234     CWallet* pwallet = (CWallet*)parg;
experimental-genesis 3235     try
experimental-genesis 3236     {
experimental-genesis 3237         vnThreadsRunning[3]++;
experimental-genesis 3238         BitcoinMiner(pwallet);
experimental-genesis 3239         vnThreadsRunning[3]--;
experimental-genesis 3240     }
experimental-genesis 3241     catch (std::exception& e) {
experimental-genesis 3242         vnThreadsRunning[3]--;
experimental-genesis 3243         PrintException(&e, "ThreadBitcoinMiner()");
experimental-genesis 3244     } catch (...) {
experimental-genesis 3245         vnThreadsRunning[3]--;
experimental-genesis 3246         PrintException(NULL, "ThreadBitcoinMiner()");
experimental-genesis 3247     }
experimental-genesis 3248     UIThreadCall(boost::bind(CalledSetStatusBar, "", 0));
experimental-genesis 3249     nHPSTimerStart = 0;
experimental-genesis 3250     if (vnThreadsRunning[3] == 0)
experimental-genesis 3251         dHashesPerSec = 0;
experimental-genesis 3252     printf("ThreadBitcoinMiner exiting, %d threads remaining\n", vnThreadsRunning[3]);
experimental-genesis 3253 }
experimental-genesis 3254 
experimental-genesis 3255 
experimental-genesis 3256 void GenerateBitcoins(bool fGenerate, CWallet* pwallet)
experimental-genesis 3257 {
experimental-genesis 3258     if (fGenerateBitcoins != fGenerate)
experimental-genesis 3259     {
experimental-genesis 3260         fGenerateBitcoins = fGenerate;
experimental-genesis 3261         WriteSetting("fGenerateBitcoins", fGenerateBitcoins);
experimental-genesis 3262         MainFrameRepaint();
experimental-genesis 3263     }
experimental-genesis 3264     if (fGenerateBitcoins)
experimental-genesis 3265     {
experimental-genesis 3266         int nProcessors = boost::thread::hardware_concurrency();
experimental-genesis 3267         printf("%d processors\n", nProcessors);
experimental-genesis 3268         if (nProcessors < 1)
experimental-genesis 3269             nProcessors = 1;
experimental-genesis 3270         if (fLimitProcessors && nProcessors > nLimitProcessors)
experimental-genesis 3271             nProcessors = nLimitProcessors;
experimental-genesis 3272         int nAddThreads = nProcessors - vnThreadsRunning[3];
experimental-genesis 3273         printf("Starting %d BitcoinMiner threads\n", nAddThreads);
experimental-genesis 3274         for (int i = 0; i < nAddThreads; i++)
experimental-genesis 3275         {
experimental-genesis 3276             if (!CreateThread(ThreadBitcoinMiner, pwallet))
experimental-genesis 3277                 printf("Error: CreateThread(ThreadBitcoinMiner) failed\n");
experimental-genesis 3278             Sleep(10);
experimental-genesis 3279         }
experimental-genesis 3280     }
experimental-genesis 3281 }