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 (!pblock->SignBlock(*pwalletMain))
 208             throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 209
 210         return CheckWork(pblock, *pwalletMain, reservekey);
 211     }
 212 }
 213
 214
 215 Value getwork(const Array& params, bool fHelp)
 216 {
 217     if (fHelp || params.size() > 1)
 218         throw runtime_error(
 219             "getwork [data]\n"
 220             "If [data] is not specified, returns formatted hash data to work on:\n"
 221             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 222             "  \"data\" : block data\n"
 223             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 224             "  \"target\" : little endian hash target\n"
 225             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 226
 227     if (vNodes.empty())
 228         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 229
 230     if (IsInitialBlockDownload())
 231         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 232
 233     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 234     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 235     static vector<CBlock*> vNewBlock;
 236     static CReserveKey reservekey(pwalletMain);
 237
 238     if (params.size() == 0)
 239     {
 240         // Update block
 241         static unsigned int nTransactionsUpdatedLast;
 242         static CBlockIndex* pindexPrev;
 243         static int64 nStart;
 244         static CBlock* pblock;
 245         if (pindexPrev != pindexBest ||
 246             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 247         {
 248             if (pindexPrev != pindexBest)
 249             {
 250                 // Deallocate old blocks since they're obsolete now
 251                 mapNewBlock.clear();
 252                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 253                     delete pblock;
 254                 vNewBlock.clear();
 255             }
 256
 257             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 258             pindexPrev = NULL;
 259
 260             // Store the pindexBest used before CreateNewBlock, to avoid races
 261             nTransactionsUpdatedLast = nTransactionsUpdated;
 262             CBlockIndex* pindexPrevNew = pindexBest;
 263             nStart = GetTime();
 264
 265             // Create new block
 266             pblock = CreateNewBlock(pwalletMain);
 267             if (!pblock)
 268                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 269             vNewBlock.push_back(pblock);
 270
 271             // Need to update only after we know CreateNewBlock succeeded
 272             pindexPrev = pindexPrevNew;
 273         }
 274
 275         // Update nTime
 276         pblock->UpdateTime(pindexPrev);
 277         pblock->nNonce = 0;
 278
 279         // Update nExtraNonce
 280         static unsigned int nExtraNonce = 0;
 281         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 282
 283         // Save
 284         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 285
 286         // Pre-build hash buffers
 287         char pmidstate[32];
 288         char pdata[128];
 289         char phash1[64];
 290         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 291
 292         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 293
 294         Object result;
 295         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 296         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 297         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 298         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 299         return result;
 300     }
 301     else
 302     {
 303         // Parse parameters
 304         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 305         if (vchData.size() != 128)
 306             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 307         CBlock* pdata = (CBlock*)&vchData[0];
 308
 309         // Byte reverse
 310         for (int i = 0; i < 128/4; i++)
 311             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 312
 313         // Get saved block
 314         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 315             return false;
 316         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 317
 318         pblock->nTime = pdata->nTime;
 319         pblock->nNonce = pdata->nNonce;
 320         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 321         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 322
 323         if (!pblock->SignBlock(*pwalletMain))
 324             throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 325
 326         return CheckWork(pblock, *pwalletMain, reservekey);
 327     }
 328 }
 329
 330
 331 Value getblocktemplate(const Array& params, bool fHelp)
 332 {
 333     if (fHelp || params.size() > 1)
 334         throw runtime_error(
 335             "getblocktemplate [params]\n"
 336             "Returns data needed to construct a block to work on:\n"
 337             "  \"version\" : block version\n"
 338             "  \"previousblockhash\" : hash of current highest block\n"
 339             "  \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n"
 340             "  \"coinbaseaux\" : data that should be included in coinbase\n"
 341             "  \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n"
 342             "  \"target\" : hash target\n"
 343             "  \"mintime\" : minimum timestamp appropriate for next block\n"
 344             "  \"curtime\" : current timestamp\n"
 345             "  \"mutable\" : list of ways the block template may be changed\n"
 346             "  \"noncerange\" : range of valid nonces\n"
 347             "  \"sigoplimit\" : limit of sigops in blocks\n"
 348             "  \"sizelimit\" : limit of block size\n"
 349             "  \"bits\" : compressed target of next block\n"
 350             "  \"height\" : height of the next block\n"
 351             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 352
 353     std::string strMode = "template";
 354     if (params.size() > 0)
 355     {
 356         const Object& oparam = params[0].get_obj();
 357         const Value& modeval = find_value(oparam, "mode");
 358         if (modeval.type() == str_type)
 359             strMode = modeval.get_str();
 360         else if (modeval.type() == null_type)
 361         {
 362             /* Do nothing */
 363         }
 364         else
 365             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 366     }
 367
 368     if (strMode != "template")
 369         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 370
 371     if (vNodes.empty())
 372         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 373
 374     if (IsInitialBlockDownload())
 375         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 376
 377     static CReserveKey reservekey(pwalletMain);
 378
 379     // Update block
 380     static unsigned int nTransactionsUpdatedLast;
 381     static CBlockIndex* pindexPrev;
 382     static int64 nStart;
 383     static CBlock* pblock;
 384     if (pindexPrev != pindexBest ||
 385         (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5))
 386     {
 387         // Clear pindexPrev so future calls make a new block, despite any failures from here on
 388         pindexPrev = NULL;
 389
 390         // Store the pindexBest used before CreateNewBlock, to avoid races
 391         nTransactionsUpdatedLast = nTransactionsUpdated;
 392         CBlockIndex* pindexPrevNew = pindexBest;
 393         nStart = GetTime();
 394
 395         // Create new block
 396         if(pblock)
 397         {
 398             delete pblock;
 399             pblock = NULL;
 400         }
 401         pblock = CreateNewBlock(pwalletMain);
 402         if (!pblock)
 403             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 404
 405         // Need to update only after we know CreateNewBlock succeeded
 406         pindexPrev = pindexPrevNew;
 407     }
 408
 409     // Update nTime
 410     pblock->UpdateTime(pindexPrev);
 411     pblock->nNonce = 0;
 412
 413     Array transactions;
 414     map<uint256, int64_t> setTxIndex;
 415     int i = 0;
 416     CTxDB txdb("r");
 417     BOOST_FOREACH (CTransaction& tx, pblock->vtx)
 418     {
 419         uint256 txHash = tx.GetHash();
 420         setTxIndex[txHash] = i++;
 421
 422         if (tx.IsCoinBase() || tx.IsCoinStake())
 423             continue;
 424
 425         Object entry;
 426
 427         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 428         ssTx << tx;
 429         entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end())));
 430
 431         entry.push_back(Pair("hash", txHash.GetHex()));
 432
 433         MapPrevTx mapInputs;
 434         map<uint256, CTxIndex> mapUnused;
 435         bool fInvalid = false;
 436         if (tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid))
 437         {
 438             entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(mapInputs) - tx.GetValueOut())));
 439
 440             Array deps;
 441             BOOST_FOREACH (MapPrevTx::value_type& inp, mapInputs)
 442             {
 443                 if (setTxIndex.count(inp.first))
 444                     deps.push_back(setTxIndex[inp.first]);
 445             }
 446             entry.push_back(Pair("depends", deps));
 447
 448             int64_t nSigOps = tx.GetLegacySigOpCount();
 449             nSigOps += tx.GetP2SHSigOpCount(mapInputs);
 450             entry.push_back(Pair("sigops", nSigOps));
 451         }
 452
 453         transactions.push_back(entry);
 454     }
 455
 456     Object aux;
 457     aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
 458
 459     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 460
 461     static Array aMutable;
 462     if (aMutable.empty())
 463     {
 464         aMutable.push_back("time");
 465         aMutable.push_back("transactions");
 466         aMutable.push_back("prevblock");
 467     }
 468
 469     Object result;
 470     result.push_back(Pair("version", pblock->nVersion));
 471     result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
 472     result.push_back(Pair("transactions", transactions));
 473     result.push_back(Pair("coinbaseaux", aux));
 474     result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue));
 475     result.push_back(Pair("target", hashTarget.GetHex()));
 476     result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
 477     result.push_back(Pair("mutable", aMutable));
 478     result.push_back(Pair("noncerange", "00000000ffffffff"));
 479     result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS));
 480     result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE));
 481     result.push_back(Pair("curtime", (int64_t)pblock->nTime));
 482     result.push_back(Pair("bits", HexBits(pblock->nBits)));
 483     result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
 484
 485     return result;
 486 }
 487
 488 Value submitblock(const Array& params, bool fHelp)
 489 {
 490     if (fHelp || params.size() < 1 || params.size() > 2)
 491         throw runtime_error(
 492             "submitblock <hex data> [optional-params-obj]\n"
 493             "[optional-params-obj] parameter is currently ignored.\n"
 494             "Attempts to submit new block to network.\n"
 495             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 496
 497     vector<unsigned char> blockData(ParseHex(params[0].get_str()));
 498     CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
 499     CBlock block;
 500     try {
 501         ssBlock >> block;
 502     }
 503     catch (std::exception &e) {
 504         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 505     }
 506
 507     if (!block.SignBlock(*pwalletMain))
 508         throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 509
 510     bool fAccepted = ProcessBlock(NULL, &block);
 511     if (!fAccepted)
 512         return "rejected";
 513
 514     return Value::null;
 515 }
 516