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 getgenerate(const Array& params, bool fHelp)
  15 {
  16     if (fHelp || params.size() != 0)
  17         throw runtime_error(
  18             "getgenerate\n"
  19             "Returns true or false.");
  20
  21     return GetBoolArg("-gen");
  22 }
  23
  24
  25 Value setgenerate(const Array& params, bool fHelp)
  26 {
  27     if (fHelp || params.size() < 1 || params.size() > 2)
  28         throw runtime_error(
  29             "setgenerate <generate> [genproclimit]\n"
  30             "<generate> is true or false to turn generation on or off.\n"
  31             "Generation is limited to [genproclimit] processors, -1 is unlimited.");
  32
  33     bool fGenerate = true;
  34     if (params.size() > 0)
  35         fGenerate = params[0].get_bool();
  36
  37     if (params.size() > 1)
  38     {
  39         int nGenProcLimit = params[1].get_int();
  40         mapArgs["-genproclimit"] = itostr(nGenProcLimit);
  41         if (nGenProcLimit == 0)
  42             fGenerate = false;
  43     }
  44     mapArgs["-gen"] = (fGenerate ? "1" : "0");
  45
  46     GenerateBitcoins(fGenerate, pwalletMain);
  47     return Value::null;
  48 }
  49
  50
  51 Value gethashespersec(const Array& params, bool fHelp)
  52 {
  53     if (fHelp || params.size() != 0)
  54         throw runtime_error(
  55             "gethashespersec\n"
  56             "Returns a recent hashes per second performance measurement while generating.");
  57
  58     if (GetTimeMillis() - nHPSTimerStart > 8000)
  59         return (boost::int64_t)0;
  60     return (boost::int64_t)dHashesPerSec;
  61 }
  62
  63
  64 Value getmininginfo(const Array& params, bool fHelp)
  65 {
  66     if (fHelp || params.size() != 0)
  67         throw runtime_error(
  68             "getmininginfo\n"
  69             "Returns an object containing mining-related information.");
  70
  71     Object obj;
  72     obj.push_back(Pair("blocks",        (int)nBestHeight));
  73     obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
  74     obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
  75     obj.push_back(Pair("difficulty",    (double)GetDifficulty()));
  76     obj.push_back(Pair("errors",        GetWarnings("statusbar")));
  77     obj.push_back(Pair("generate",      GetBoolArg("-gen")));
  78     obj.push_back(Pair("genproclimit",  (int)GetArg("-genproclimit", -1)));
  79     obj.push_back(Pair("hashespersec",  gethashespersec(params, false)));
  80     obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
  81     obj.push_back(Pair("testnet",       fTestNet));
  82     return obj;
  83 }
  84
  85 Value getworkex(const Array& params, bool fHelp)
  86 {
  87     if (fHelp || params.size() > 2)
  88         throw runtime_error(
  89             "getworkex [data, coinbase]\n"
  90             "If [data, coinbase] is not specified, returns extended work data.\n"
  91         );
  92
  93     if (vNodes.empty())
  94         throw JSONRPCError(-9, "NovaCoin is not connected!");
  95
  96     if (IsInitialBlockDownload())
  97         throw JSONRPCError(-10, "NovaCoin is downloading blocks...");
  98
  99     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 100     static mapNewBlock_t mapNewBlock;
 101     static vector<CBlock*> vNewBlock;
 102     static CReserveKey reservekey(pwalletMain);
 103
 104     if (params.size() == 0)
 105     {
 106         // Update block
 107         static unsigned int nTransactionsUpdatedLast;
 108         static CBlockIndex* pindexPrev;
 109         static int64 nStart;
 110         static CBlock* pblock;
 111         if (pindexPrev != pindexBest ||
 112             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 113         {
 114             if (pindexPrev != pindexBest)
 115             {
 116                 // Deallocate old blocks since they're obsolete now
 117                 mapNewBlock.clear();
 118                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 119                     delete pblock;
 120                 vNewBlock.clear();
 121             }
 122             nTransactionsUpdatedLast = nTransactionsUpdated;
 123             pindexPrev = pindexBest;
 124             nStart = GetTime();
 125
 126             // Create new block
 127             pblock = CreateNewBlock(pwalletMain);
 128             if (!pblock)
 129                 throw JSONRPCError(-7, "Out of memory");
 130             vNewBlock.push_back(pblock);
 131         }
 132
 133         // Update nTime
 134         pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 135         pblock->nNonce = 0;
 136
 137         // Update nExtraNonce
 138         static unsigned int nExtraNonce = 0;
 139         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 140
 141         // Save
 142         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 143
 144         // Prebuild hash buffers
 145         char pmidstate[32];
 146         char pdata[128];
 147         char phash1[64];
 148         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 149
 150         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 151
 152         CTransaction coinbaseTx = pblock->vtx[0];
 153         std::vector<uint256> merkle = pblock->GetMerkleBranch(0);
 154
 155         Object result;
 156         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 157         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 158
 159         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 160         ssTx << coinbaseTx;
 161         result.push_back(Pair("coinbase", HexStr(ssTx.begin(), ssTx.end())));
 162
 163         Array merkle_arr;
 164
 165         BOOST_FOREACH(uint256 merkleh, merkle) {
 166             merkle_arr.push_back(HexStr(BEGIN(merkleh), END(merkleh)));
 167         }
 168
 169         result.push_back(Pair("merkle", merkle_arr));
 170
 171
 172         return result;
 173     }
 174     else
 175     {
 176         // Parse parameters
 177         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 178         vector<unsigned char> coinbase;
 179
 180         if(params.size() == 2)
 181             coinbase = ParseHex(params[1].get_str());
 182
 183         if (vchData.size() != 128)
 184             throw JSONRPCError(-8, "Invalid parameter");
 185
 186         CBlock* pdata = (CBlock*)&vchData[0];
 187
 188         // Byte reverse
 189         for (int i = 0; i < 128/4; i++)
 190             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 191
 192         // Get saved block
 193         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 194             return false;
 195         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 196
 197         pblock->nTime = pdata->nTime;
 198         pblock->nNonce = pdata->nNonce;
 199
 200         if(coinbase.size() == 0)
 201             pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 202         else
 203             CDataStream(coinbase, SER_NETWORK, PROTOCOL_VERSION) >> pblock->vtx[0]; // FIXME - HACK!
 204
 205         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 206
 207         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 208         {
 209             if (!pblock->SignBlock(*pwalletMain))
 210                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 211         }
 212
 213         return CheckWork(pblock, *pwalletMain, reservekey);
 214     }
 215 }
 216
 217
 218 Value getwork(const Array& params, bool fHelp)
 219 {
 220     if (fHelp || params.size() > 1)
 221         throw runtime_error(
 222             "getwork [data]\n"
 223             "If [data] is not specified, returns formatted hash data to work on:\n"
 224             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 225             "  \"data\" : block data\n"
 226             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 227             "  \"target\" : little endian hash target\n"
 228             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 229
 230     if (vNodes.empty())
 231         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 232
 233     if (IsInitialBlockDownload())
 234         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 235
 236     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 237     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 238     static vector<CBlock*> vNewBlock;
 239     static CReserveKey reservekey(pwalletMain);
 240
 241     if (params.size() == 0)
 242     {
 243         // Update block
 244         static unsigned int nTransactionsUpdatedLast;
 245         static CBlockIndex* pindexPrev;
 246         static int64 nStart;
 247         static CBlock* pblock;
 248         if (pindexPrev != pindexBest ||
 249             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 250         {
 251             if (pindexPrev != pindexBest)
 252             {
 253                 // Deallocate old blocks since they're obsolete now
 254                 mapNewBlock.clear();
 255                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 256                     delete pblock;
 257                 vNewBlock.clear();
 258             }
 259
 260             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 261             pindexPrev = NULL;
 262
 263             // Store the pindexBest used before CreateNewBlock, to avoid races
 264             nTransactionsUpdatedLast = nTransactionsUpdated;
 265             CBlockIndex* pindexPrevNew = pindexBest;
 266             nStart = GetTime();
 267
 268             // Create new block
 269             pblock = CreateNewBlock(pwalletMain);
 270             if (!pblock)
 271                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 272             vNewBlock.push_back(pblock);
 273
 274             // Need to update only after we know CreateNewBlock succeeded
 275             pindexPrev = pindexPrevNew;
 276         }
 277
 278         // Update nTime
 279         pblock->UpdateTime(pindexPrev);
 280         pblock->nNonce = 0;
 281
 282         // Update nExtraNonce
 283         static unsigned int nExtraNonce = 0;
 284         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 285
 286         // Save
 287         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 288
 289         // Pre-build hash buffers
 290         char pmidstate[32];
 291         char pdata[128];
 292         char phash1[64];
 293         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 294
 295         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 296
 297         Object result;
 298         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 299         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 300         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 301         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 302         return result;
 303     }
 304     else
 305     {
 306         // Parse parameters
 307         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 308         if (vchData.size() != 128)
 309             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 310         CBlock* pdata = (CBlock*)&vchData[0];
 311
 312         // Byte reverse
 313         for (int i = 0; i < 128/4; i++)
 314             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 315
 316         // Get saved block
 317         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 318             return false;
 319         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 320
 321         pblock->nTime = pdata->nTime;
 322         pblock->nNonce = pdata->nNonce;
 323         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 324         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 325
 326         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 327         {
 328             if (!pblock->SignBlock(*pwalletMain))
 329                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 330         }
 331
 332         return CheckWork(pblock, *pwalletMain, reservekey);
 333     }
 334 }
 335
 336
 337 Value getblocktemplate(const Array& params, bool fHelp)
 338 {
 339     if (fHelp || params.size() > 1)
 340         throw runtime_error(
 341             "getblocktemplate [params]\n"
 342             "Returns data needed to construct a block to work on:\n"
 343             "  \"version\" : block version\n"
 344             "  \"previousblockhash\" : hash of current highest block\n"
 345             "  \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n"
 346             "  \"coinbaseaux\" : data that should be included in coinbase\n"
 347             "  \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n"
 348             "  \"target\" : hash target\n"
 349             "  \"mintime\" : minimum timestamp appropriate for next block\n"
 350             "  \"curtime\" : current timestamp\n"
 351             "  \"mutable\" : list of ways the block template may be changed\n"
 352             "  \"noncerange\" : range of valid nonces\n"
 353             "  \"sigoplimit\" : limit of sigops in blocks\n"
 354             "  \"sizelimit\" : limit of block size\n"
 355             "  \"bits\" : compressed target of next block\n"
 356             "  \"height\" : height of the next block\n"
 357             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 358
 359     std::string strMode = "template";
 360     if (params.size() > 0)
 361     {
 362         const Object& oparam = params[0].get_obj();
 363         const Value& modeval = find_value(oparam, "mode");
 364         if (modeval.type() == str_type)
 365             strMode = modeval.get_str();
 366         else if (modeval.type() == null_type)
 367         {
 368             /* Do nothing */
 369         }
 370         else
 371             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 372     }
 373
 374     if (strMode != "template")
 375         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 376
 377     if (vNodes.empty())
 378         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 379
 380     if (IsInitialBlockDownload())
 381         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 382
 383     static CReserveKey reservekey(pwalletMain);
 384
 385     // Update block
 386     static unsigned int nTransactionsUpdatedLast;
 387     static CBlockIndex* pindexPrev;
 388     static int64 nStart;
 389     static CBlock* pblock;
 390     if (pindexPrev != pindexBest ||
 391         (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5))
 392     {
 393         // Clear pindexPrev so future calls make a new block, despite any failures from here on
 394         pindexPrev = NULL;
 395
 396         // Store the pindexBest used before CreateNewBlock, to avoid races
 397         nTransactionsUpdatedLast = nTransactionsUpdated;
 398         CBlockIndex* pindexPrevNew = pindexBest;
 399         nStart = GetTime();
 400
 401         // Create new block
 402         if(pblock)
 403         {
 404             delete pblock;
 405             pblock = NULL;
 406         }
 407         pblock = CreateNewBlock(pwalletMain);
 408         if (!pblock)
 409             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 410
 411         // Need to update only after we know CreateNewBlock succeeded
 412         pindexPrev = pindexPrevNew;
 413     }
 414
 415     // Update nTime
 416     pblock->UpdateTime(pindexPrev);
 417     pblock->nNonce = 0;
 418
 419     Array transactions;
 420     map<uint256, int64_t> setTxIndex;
 421     int i = 0;
 422     CTxDB txdb("r");
 423     BOOST_FOREACH (CTransaction& tx, pblock->vtx)
 424     {
 425         uint256 txHash = tx.GetHash();
 426         setTxIndex[txHash] = i++;
 427
 428         if (tx.IsCoinBase() || tx.IsCoinStake())
 429             continue;
 430
 431         Object entry;
 432
 433         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 434         ssTx << tx;
 435         entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end())));
 436
 437         entry.push_back(Pair("hash", txHash.GetHex()));
 438
 439         MapPrevTx mapInputs;
 440         map<uint256, CTxIndex> mapUnused;
 441         bool fInvalid = false;
 442         if (tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid))
 443         {
 444             entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(mapInputs) - tx.GetValueOut())));
 445
 446             Array deps;
 447             BOOST_FOREACH (MapPrevTx::value_type& inp, mapInputs)
 448             {
 449                 if (setTxIndex.count(inp.first))
 450                     deps.push_back(setTxIndex[inp.first]);
 451             }
 452             entry.push_back(Pair("depends", deps));
 453
 454             int64_t nSigOps = tx.GetLegacySigOpCount();
 455             nSigOps += tx.GetP2SHSigOpCount(mapInputs);
 456             entry.push_back(Pair("sigops", nSigOps));
 457         }
 458
 459         transactions.push_back(entry);
 460     }
 461
 462     Object aux;
 463     aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
 464
 465     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 466
 467     static Array aMutable;
 468     if (aMutable.empty())
 469     {
 470         aMutable.push_back("time");
 471         aMutable.push_back("transactions");
 472         aMutable.push_back("prevblock");
 473     }
 474
 475     Object result;
 476     result.push_back(Pair("version", pblock->nVersion));
 477     result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
 478     result.push_back(Pair("transactions", transactions));
 479     result.push_back(Pair("coinbaseaux", aux));
 480     result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue));
 481     result.push_back(Pair("target", hashTarget.GetHex()));
 482     result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
 483     result.push_back(Pair("mutable", aMutable));
 484     result.push_back(Pair("noncerange", "00000000ffffffff"));
 485     result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS));
 486     result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE));
 487     result.push_back(Pair("curtime", (int64_t)pblock->nTime));
 488     result.push_back(Pair("bits", HexBits(pblock->nBits)));
 489     result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
 490
 491     return result;
 492 }
 493
 494 Value submitblock(const Array& params, bool fHelp)
 495 {
 496     if (fHelp || params.size() < 1 || params.size() > 2)
 497         throw runtime_error(
 498             "submitblock <hex data> [optional-params-obj]\n"
 499             "[optional-params-obj] parameter is currently ignored.\n"
 500             "Attempts to submit new block to network.\n"
 501             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 502
 503     vector<unsigned char> blockData(ParseHex(params[0].get_str()));
 504     CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
 505     CBlock block;
 506     try {
 507         ssBlock >> block;
 508     }
 509     catch (std::exception &e) {
 510         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 511     }
 512
 513     if (!fTestNet && block.GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 514     {
 515         if (!block.SignBlock(*pwalletMain))
 516             throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 517     }
 518
 519     bool fAccepted = ProcessBlock(NULL, &block);
 520     if (!fAccepted)
 521         return "rejected";
 522
 523     return Value::null;
 524 }
 525