src/rpcmining.cpp

   1 // Copyright (c) 2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2012 The Bitcoin developers
   3 // Distributed under the MIT/X11 software license, see the accompanying
   4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5
   6 #include "main.h"
   7 #include "db.h"
   8 #include "init.h"
   9 #include "bitcoinrpc.h"
  10
  11 using namespace json_spirit;
  12 using namespace std;
  13
  14 Value getmininginfo(const Array& params, bool fHelp)
  15 {
  16     if (fHelp || params.size() != 0)
  17         throw runtime_error(
  18             "getmininginfo\n"
  19             "Returns an object containing mining-related information.");
  20
  21     Object obj;
  22     obj.push_back(Pair("blocks",        (int)nBestHeight));
  23     obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
  24     obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
  25     obj.push_back(Pair("difficulty",    (double)GetDifficulty()));
  26     obj.push_back(Pair("errors",        GetWarnings("statusbar")));
  27     obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
  28     obj.push_back(Pair("testnet",       fTestNet));
  29     return obj;
  30 }
  31
  32 Value getworkex(const Array& params, bool fHelp)
  33 {
  34     if (fHelp || params.size() > 2)
  35         throw runtime_error(
  36             "getworkex [data, coinbase]\n"
  37             "If [data, coinbase] is not specified, returns extended work data.\n"
  38         );
  39
  40     if (vNodes.empty())
  41         throw JSONRPCError(-9, "NovaCoin is not connected!");
  42
  43     if (IsInitialBlockDownload())
  44         throw JSONRPCError(-10, "NovaCoin is downloading blocks...");
  45
  46     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
  47     static mapNewBlock_t mapNewBlock;
  48     static vector<CBlock*> vNewBlock;
  49     static CReserveKey reservekey(pwalletMain);
  50
  51     if (params.size() == 0)
  52     {
  53         // Update block
  54         static unsigned int nTransactionsUpdatedLast;
  55         static CBlockIndex* pindexPrev;
  56         static int64 nStart;
  57         static CBlock* pblock;
  58         if (pindexPrev != pindexBest ||
  59             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
  60         {
  61             if (pindexPrev != pindexBest)
  62             {
  63                 // Deallocate old blocks since they're obsolete now
  64                 mapNewBlock.clear();
  65                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
  66                     delete pblock;
  67                 vNewBlock.clear();
  68             }
  69             nTransactionsUpdatedLast = nTransactionsUpdated;
  70             pindexPrev = pindexBest;
  71             nStart = GetTime();
  72
  73             // Create new block
  74             pblock = CreateNewBlock(pwalletMain);
  75             if (!pblock)
  76                 throw JSONRPCError(-7, "Out of memory");
  77             vNewBlock.push_back(pblock);
  78         }
  79
  80         // Update nTime
  81         pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
  82         pblock->nNonce = 0;
  83
  84         // Update nExtraNonce
  85         static unsigned int nExtraNonce = 0;
  86         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
  87
  88         // Save
  89         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
  90
  91         // Prebuild hash buffers
  92         char pmidstate[32];
  93         char pdata[128];
  94         char phash1[64];
  95         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
  96
  97         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
  98
  99         CTransaction coinbaseTx = pblock->vtx[0];
 100         std::vector<uint256> merkle = pblock->GetMerkleBranch(0);
 101
 102         Object result;
 103         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 104         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 105
 106         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 107         ssTx << coinbaseTx;
 108         result.push_back(Pair("coinbase", HexStr(ssTx.begin(), ssTx.end())));
 109
 110         Array merkle_arr;
 111
 112         BOOST_FOREACH(uint256 merkleh, merkle) {
 113             merkle_arr.push_back(HexStr(BEGIN(merkleh), END(merkleh)));
 114         }
 115
 116         result.push_back(Pair("merkle", merkle_arr));
 117
 118
 119         return result;
 120     }
 121     else
 122     {
 123         // Parse parameters
 124         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 125         vector<unsigned char> coinbase;
 126
 127         if(params.size() == 2)
 128             coinbase = ParseHex(params[1].get_str());
 129
 130         if (vchData.size() != 128)
 131             throw JSONRPCError(-8, "Invalid parameter");
 132
 133         CBlock* pdata = (CBlock*)&vchData[0];
 134
 135         // Byte reverse
 136         for (int i = 0; i < 128/4; i++)
 137             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 138
 139         // Get saved block
 140         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 141             return false;
 142         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 143
 144         pblock->nTime = pdata->nTime;
 145         pblock->nNonce = pdata->nNonce;
 146
 147         if(coinbase.size() == 0)
 148             pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 149         else
 150             CDataStream(coinbase, SER_NETWORK, PROTOCOL_VERSION) >> pblock->vtx[0]; // FIXME - HACK!
 151
 152         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 153
 154         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 155         {
 156             if (!pblock->SignBlock(*pwalletMain))
 157                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 158         }
 159
 160         return CheckWork(pblock, *pwalletMain, reservekey);
 161     }
 162 }
 163
 164
 165 Value getwork(const Array& params, bool fHelp)
 166 {
 167     if (fHelp || params.size() > 1)
 168         throw runtime_error(
 169             "getwork [data]\n"
 170             "If [data] is not specified, returns formatted hash data to work on:\n"
 171             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 172             "  \"data\" : block data\n"
 173             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 174             "  \"target\" : little endian hash target\n"
 175             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 176
 177     if (vNodes.empty())
 178         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 179
 180     if (IsInitialBlockDownload())
 181         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 182
 183     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 184     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 185     static vector<CBlock*> vNewBlock;
 186     static CReserveKey reservekey(pwalletMain);
 187
 188     if (params.size() == 0)
 189     {
 190         // Update block
 191         static unsigned int nTransactionsUpdatedLast;
 192         static CBlockIndex* pindexPrev;
 193         static int64 nStart;
 194         static CBlock* pblock;
 195         if (pindexPrev != pindexBest ||
 196             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 197         {
 198             if (pindexPrev != pindexBest)
 199             {
 200                 // Deallocate old blocks since they're obsolete now
 201                 mapNewBlock.clear();
 202                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 203                     delete pblock;
 204                 vNewBlock.clear();
 205             }
 206
 207             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 208             pindexPrev = NULL;
 209
 210             // Store the pindexBest used before CreateNewBlock, to avoid races
 211             nTransactionsUpdatedLast = nTransactionsUpdated;
 212             CBlockIndex* pindexPrevNew = pindexBest;
 213             nStart = GetTime();
 214
 215             // Create new block
 216             pblock = CreateNewBlock(pwalletMain);
 217             if (!pblock)
 218                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 219             vNewBlock.push_back(pblock);
 220
 221             // Need to update only after we know CreateNewBlock succeeded
 222             pindexPrev = pindexPrevNew;
 223         }
 224
 225         // Update nTime
 226         pblock->UpdateTime(pindexPrev);
 227         pblock->nNonce = 0;
 228
 229         // Update nExtraNonce
 230         static unsigned int nExtraNonce = 0;
 231         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 232
 233         // Save
 234         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 235
 236         // Pre-build hash buffers
 237         char pmidstate[32];
 238         char pdata[128];
 239         char phash1[64];
 240         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 241
 242         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 243
 244         Object result;
 245         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 246         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 247         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 248         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 249         return result;
 250     }
 251     else
 252     {
 253         // Parse parameters
 254         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 255         if (vchData.size() != 128)
 256             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 257         CBlock* pdata = (CBlock*)&vchData[0];
 258
 259         // Byte reverse
 260         for (int i = 0; i < 128/4; i++)
 261             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 262
 263         // Get saved block
 264         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 265             return false;
 266         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 267
 268         pblock->nTime = pdata->nTime;
 269         pblock->nNonce = pdata->nNonce;
 270         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 271         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 272
 273         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 274         {
 275             if (!pblock->SignBlock(*pwalletMain))
 276                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 277         }
 278
 279         return CheckWork(pblock, *pwalletMain, reservekey);
 280     }
 281 }
 282
 283
 284 Value getblocktemplate(const Array& params, bool fHelp)
 285 {
 286     if (fHelp || params.size() > 1)
 287         throw runtime_error(
 288             "getblocktemplate [params]\n"
 289             "Returns data needed to construct a block to work on:\n"
 290             "  \"version\" : block version\n"
 291             "  \"previousblockhash\" : hash of current highest block\n"
 292             "  \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n"
 293             "  \"coinbaseaux\" : data that should be included in coinbase\n"
 294             "  \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n"
 295             "  \"target\" : hash target\n"
 296             "  \"mintime\" : minimum timestamp appropriate for next block\n"
 297             "  \"curtime\" : current timestamp\n"
 298             "  \"mutable\" : list of ways the block template may be changed\n"
 299             "  \"noncerange\" : range of valid nonces\n"
 300             "  \"sigoplimit\" : limit of sigops in blocks\n"
 301             "  \"sizelimit\" : limit of block size\n"
 302             "  \"bits\" : compressed target of next block\n"
 303             "  \"height\" : height of the next block\n"
 304             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 305
 306     std::string strMode = "template";
 307     if (params.size() > 0)
 308     {
 309         const Object& oparam = params[0].get_obj();
 310         const Value& modeval = find_value(oparam, "mode");
 311         if (modeval.type() == str_type)
 312             strMode = modeval.get_str();
 313         else if (modeval.type() == null_type)
 314         {
 315             /* Do nothing */
 316         }
 317         else
 318             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 319     }
 320
 321     if (strMode != "template")
 322         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 323
 324     if (vNodes.empty())
 325         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 326
 327     if (IsInitialBlockDownload())
 328         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 329
 330     static CReserveKey reservekey(pwalletMain);
 331
 332     // Update block
 333     static unsigned int nTransactionsUpdatedLast;
 334     static CBlockIndex* pindexPrev;
 335     static int64 nStart;
 336     static CBlock* pblock;
 337     if (pindexPrev != pindexBest ||
 338         (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5))
 339     {
 340         // Clear pindexPrev so future calls make a new block, despite any failures from here on
 341         pindexPrev = NULL;
 342
 343         // Store the pindexBest used before CreateNewBlock, to avoid races
 344         nTransactionsUpdatedLast = nTransactionsUpdated;
 345         CBlockIndex* pindexPrevNew = pindexBest;
 346         nStart = GetTime();
 347
 348         // Create new block
 349         if(pblock)
 350         {
 351             delete pblock;
 352             pblock = NULL;
 353         }
 354         pblock = CreateNewBlock(pwalletMain);
 355         if (!pblock)
 356             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 357
 358         // Need to update only after we know CreateNewBlock succeeded
 359         pindexPrev = pindexPrevNew;
 360     }
 361
 362     // Update nTime
 363     pblock->UpdateTime(pindexPrev);
 364     pblock->nNonce = 0;
 365
 366     Array transactions;
 367     map<uint256, int64_t> setTxIndex;
 368     int i = 0;
 369     CTxDB txdb("r");
 370     BOOST_FOREACH (CTransaction& tx, pblock->vtx)
 371     {
 372         uint256 txHash = tx.GetHash();
 373         setTxIndex[txHash] = i++;
 374
 375         if (tx.IsCoinBase() || tx.IsCoinStake())
 376             continue;
 377
 378         Object entry;
 379
 380         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 381         ssTx << tx;
 382         entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end())));
 383
 384         entry.push_back(Pair("hash", txHash.GetHex()));
 385
 386         MapPrevTx mapInputs;
 387         map<uint256, CTxIndex> mapUnused;
 388         bool fInvalid = false;
 389         if (tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid))
 390         {
 391             entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(mapInputs) - tx.GetValueOut())));
 392
 393             Array deps;
 394             BOOST_FOREACH (MapPrevTx::value_type& inp, mapInputs)
 395             {
 396                 if (setTxIndex.count(inp.first))
 397                     deps.push_back(setTxIndex[inp.first]);
 398             }
 399             entry.push_back(Pair("depends", deps));
 400
 401             int64_t nSigOps = tx.GetLegacySigOpCount();
 402             nSigOps += tx.GetP2SHSigOpCount(mapInputs);
 403             entry.push_back(Pair("sigops", nSigOps));
 404         }
 405
 406         transactions.push_back(entry);
 407     }
 408
 409     Object aux;
 410     aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
 411
 412     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 413
 414     static Array aMutable;
 415     if (aMutable.empty())
 416     {
 417         aMutable.push_back("time");
 418         aMutable.push_back("transactions");
 419         aMutable.push_back("prevblock");
 420     }
 421
 422     Object result;
 423     result.push_back(Pair("version", pblock->nVersion));
 424     result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
 425     result.push_back(Pair("transactions", transactions));
 426     result.push_back(Pair("coinbaseaux", aux));
 427     result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue));
 428     result.push_back(Pair("target", hashTarget.GetHex()));
 429     result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
 430     result.push_back(Pair("mutable", aMutable));
 431     result.push_back(Pair("noncerange", "00000000ffffffff"));
 432     result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS));
 433     result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE));
 434     result.push_back(Pair("curtime", (int64_t)pblock->nTime));
 435     result.push_back(Pair("bits", HexBits(pblock->nBits)));
 436     result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
 437
 438     return result;
 439 }
 440
 441 Value submitblock(const Array& params, bool fHelp)
 442 {
 443     if (fHelp || params.size() < 1 || params.size() > 2)
 444         throw runtime_error(
 445             "submitblock <hex data> [optional-params-obj]\n"
 446             "[optional-params-obj] parameter is currently ignored.\n"
 447             "Attempts to submit new block to network.\n"
 448             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 449
 450     vector<unsigned char> blockData(ParseHex(params[0].get_str()));
 451     CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
 452     CBlock block;
 453     try {
 454         ssBlock >> block;
 455     }
 456     catch (std::exception &e) {
 457         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 458     }
 459
 460     if (!fTestNet && block.GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 461     {
 462         if (!block.SignBlock(*pwalletMain))
 463             throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 464     }
 465
 466     bool fAccepted = ProcessBlock(NULL, &block);
 467     if (!fAccepted)
 468         return "rejected";
 469
 470     return Value::null;
 471 }
 472