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 "txdb.h"
   9 #include "init.h"
  10 #include "miner.h"
  11 #include "bitcoinrpc.h"
  12
  13 using namespace json_spirit;
  14 using namespace std;
  15
  16 Value getmininginfo(const Array& params, bool fHelp)
  17 {
  18     if (fHelp || params.size() != 0)
  19         throw runtime_error(
  20             "getmininginfo\n"
  21             "Returns an object containing mining-related information.");
  22
  23     double dStakeKernelsTriedAvg = 0;
  24     int nPoWInterval = 72, nPoSInterval = 72, nStakesHandled = 0, nStakesTime = 0;
  25     int64 nTargetSpacingWorkMin = 30, nTargetSpacingWork = 30;
  26
  27     CBlockIndex* pindex = pindexGenesisBlock;
  28     CBlockIndex* pindexPrevWork = pindexGenesisBlock;
  29     CBlockIndex* pindexPrevStake = NULL;
  30
  31     while (pindex)
  32     {
  33         if (pindex->IsProofOfWork())
  34         {
  35             int64 nActualSpacingWork = pindex->GetBlockTime() - pindexPrevWork->GetBlockTime();
  36             nTargetSpacingWork = ((nPoWInterval - 1) * nTargetSpacingWork + nActualSpacingWork + nActualSpacingWork) / (nPoWInterval + 1);
  37             nTargetSpacingWork = max(nTargetSpacingWork, nTargetSpacingWorkMin);
  38             pindexPrevWork = pindex;
  39         }
  40
  41         pindex = pindex->pnext;
  42     }
  43
  44
  45     pindex = pindexBest;
  46
  47     while (pindex && nStakesHandled < nPoSInterval)
  48     {
  49         if (pindex->IsProofOfStake())
  50         {
  51             dStakeKernelsTriedAvg += GetDifficulty(pindex) * 4294967296;
  52             nStakesTime += pindexPrevStake ? (pindexPrevStake->nTime - pindex->nTime) : 0;
  53             pindexPrevStake = pindex;
  54             nStakesHandled++;
  55         }
  56
  57         pindex = pindex->pprev;
  58     }
  59
  60     double dNetworkMhps = GetDifficulty() * 4294.967296 / nTargetSpacingWork;
  61     double dNetworkWeight = dStakeKernelsTriedAvg / nStakesTime;
  62
  63     Object obj;
  64     obj.push_back(Pair("blocks",        (int)nBestHeight));
  65     obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
  66     obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
  67     obj.push_back(Pair("difficulty",    (double)GetDifficulty()));
  68     obj.push_back(Pair("blockvalue",    (uint64_t)GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits)));
  69     obj.push_back(Pair("netmhashps",     dNetworkMhps));
  70     obj.push_back(Pair("netstakeweight", dNetworkWeight));
  71     obj.push_back(Pair("errors",        GetWarnings("statusbar")));
  72     obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
  73     obj.push_back(Pair("stakeweight",    (uint64_t)pwalletMain->GetStakeWeight(*pwalletMain, STAKE_NORMAL)));
  74     obj.push_back(Pair("minweight",    (uint64_t)pwalletMain->GetStakeWeight(*pwalletMain, STAKE_MINWEIGHT)));
  75     obj.push_back(Pair("maxweight",    (uint64_t)pwalletMain->GetStakeWeight(*pwalletMain, STAKE_MAXWEIGHT)));
  76     obj.push_back(Pair("stakeinterest",    (uint64_t)GetProofOfStakeReward(0, GetLastBlockIndex(pindexBest, true)->nBits, GetLastBlockIndex(pindexBest, true)->nTime, true)));
  77     obj.push_back(Pair("testnet",       fTestNet));
  78     return obj;
  79 }
  80
  81 Value getworkex(const Array& params, bool fHelp)
  82 {
  83     if (fHelp || params.size() > 2)
  84         throw runtime_error(
  85             "getworkex [data, coinbase]\n"
  86             "If [data, coinbase] is not specified, returns extended work data.\n"
  87         );
  88
  89     if (vNodes.empty())
  90         throw JSONRPCError(-9, "NovaCoin is not connected!");
  91
  92     if (IsInitialBlockDownload())
  93         throw JSONRPCError(-10, "NovaCoin is downloading blocks...");
  94
  95     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
  96     static mapNewBlock_t mapNewBlock;
  97     static vector<CBlock*> vNewBlock;
  98     static CReserveKey reservekey(pwalletMain);
  99
 100     if (params.size() == 0)
 101     {
 102         // Update block
 103         static unsigned int nTransactionsUpdatedLast;
 104         static CBlockIndex* pindexPrev;
 105         static int64 nStart;
 106         static CBlock* pblock;
 107         if (pindexPrev != pindexBest ||
 108             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 109         {
 110             if (pindexPrev != pindexBest)
 111             {
 112                 // Deallocate old blocks since they're obsolete now
 113                 mapNewBlock.clear();
 114                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 115                     delete pblock;
 116                 vNewBlock.clear();
 117             }
 118             nTransactionsUpdatedLast = nTransactionsUpdated;
 119             pindexPrev = pindexBest;
 120             nStart = GetTime();
 121
 122             // Create new block
 123             pblock = CreateNewBlock(pwalletMain);
 124             if (!pblock)
 125                 throw JSONRPCError(-7, "Out of memory");
 126             vNewBlock.push_back(pblock);
 127         }
 128
 129         // Update nTime
 130         pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 131         pblock->nNonce = 0;
 132
 133         // Update nExtraNonce
 134         static unsigned int nExtraNonce = 0;
 135         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 136
 137         // Save
 138         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 139
 140         // Prebuild hash buffers
 141         char pmidstate[32];
 142         char pdata[128];
 143         char phash1[64];
 144         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 145
 146         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 147
 148         CTransaction coinbaseTx = pblock->vtx[0];
 149         std::vector<uint256> merkle = pblock->GetMerkleBranch(0);
 150
 151         Object result;
 152         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 153         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 154
 155         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 156         ssTx << coinbaseTx;
 157         result.push_back(Pair("coinbase", HexStr(ssTx.begin(), ssTx.end())));
 158
 159         Array merkle_arr;
 160
 161         BOOST_FOREACH(uint256 merkleh, merkle) {
 162             merkle_arr.push_back(HexStr(BEGIN(merkleh), END(merkleh)));
 163         }
 164
 165         result.push_back(Pair("merkle", merkle_arr));
 166
 167
 168         return result;
 169     }
 170     else
 171     {
 172         // Parse parameters
 173         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 174         vector<unsigned char> coinbase;
 175
 176         if(params.size() == 2)
 177             coinbase = ParseHex(params[1].get_str());
 178
 179         if (vchData.size() != 128)
 180             throw JSONRPCError(-8, "Invalid parameter");
 181
 182         CBlock* pdata = (CBlock*)&vchData[0];
 183
 184         // Byte reverse
 185         for (int i = 0; i < 128/4; i++)
 186             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 187
 188         // Get saved block
 189         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 190             return false;
 191         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 192
 193         pblock->nTime = pdata->nTime;
 194         pblock->nNonce = pdata->nNonce;
 195
 196         if(coinbase.size() == 0)
 197             pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 198         else
 199             CDataStream(coinbase, SER_NETWORK, PROTOCOL_VERSION) >> pblock->vtx[0]; // FIXME - HACK!
 200
 201         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 202
 203         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 204         {
 205             if (!pblock->SignBlock(*pwalletMain))
 206                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 207         }
 208
 209         return CheckWork(pblock, *pwalletMain, reservekey);
 210     }
 211 }
 212
 213
 214 Value getwork(const Array& params, bool fHelp)
 215 {
 216     if (fHelp || params.size() > 1)
 217         throw runtime_error(
 218             "getwork [data]\n"
 219             "If [data] is not specified, returns formatted hash data to work on:\n"
 220             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 221             "  \"data\" : block data\n"
 222             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 223             "  \"target\" : little endian hash target\n"
 224             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 225
 226     if (vNodes.empty())
 227         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 228
 229     if (IsInitialBlockDownload())
 230         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 231
 232     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 233     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 234     static vector<CBlock*> vNewBlock;
 235     static CReserveKey reservekey(pwalletMain);
 236
 237     if (params.size() == 0)
 238     {
 239         // Update block
 240         static unsigned int nTransactionsUpdatedLast;
 241         static CBlockIndex* pindexPrev;
 242         static int64 nStart;
 243         static CBlock* pblock;
 244         if (pindexPrev != pindexBest ||
 245             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 246         {
 247             if (pindexPrev != pindexBest)
 248             {
 249                 // Deallocate old blocks since they're obsolete now
 250                 mapNewBlock.clear();
 251                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 252                     delete pblock;
 253                 vNewBlock.clear();
 254             }
 255
 256             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 257             pindexPrev = NULL;
 258
 259             // Store the pindexBest used before CreateNewBlock, to avoid races
 260             nTransactionsUpdatedLast = nTransactionsUpdated;
 261             CBlockIndex* pindexPrevNew = pindexBest;
 262             nStart = GetTime();
 263
 264             // Create new block
 265             pblock = CreateNewBlock(pwalletMain);
 266             if (!pblock)
 267                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 268             vNewBlock.push_back(pblock);
 269
 270             // Need to update only after we know CreateNewBlock succeeded
 271             pindexPrev = pindexPrevNew;
 272         }
 273
 274         // Update nTime
 275         pblock->UpdateTime(pindexPrev);
 276         pblock->nNonce = 0;
 277
 278         // Update nExtraNonce
 279         static unsigned int nExtraNonce = 0;
 280         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 281
 282         // Save
 283         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 284
 285         // Pre-build hash buffers
 286         char pmidstate[32];
 287         char pdata[128];
 288         char phash1[64];
 289         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 290
 291         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 292
 293         Object result;
 294         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 295         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 296         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 297         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 298         return result;
 299     }
 300     else
 301     {
 302         // Parse parameters
 303         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 304         if (vchData.size() != 128)
 305             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 306         CBlock* pdata = (CBlock*)&vchData[0];
 307
 308         // Byte reverse
 309         for (int i = 0; i < 128/4; i++)
 310             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 311
 312         // Get saved block
 313         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 314             return false;
 315         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 316
 317         pblock->nTime = pdata->nTime;
 318         pblock->nNonce = pdata->nNonce;
 319         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 320         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 321
 322         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 323         {
 324             if (!pblock->SignBlock(*pwalletMain))
 325                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 326         }
 327
 328         return CheckWork(pblock, *pwalletMain, reservekey);
 329     }
 330 }
 331
 332
 333 Value getblocktemplate(const Array& params, bool fHelp)
 334 {
 335     if (fHelp || params.size() > 1)
 336         throw runtime_error(
 337             "getblocktemplate [params]\n"
 338             "Returns data needed to construct a block to work on:\n"
 339             "  \"version\" : block version\n"
 340             "  \"previousblockhash\" : hash of current highest block\n"
 341             "  \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n"
 342             "  \"coinbaseaux\" : data that should be included in coinbase\n"
 343             "  \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n"
 344             "  \"target\" : hash target\n"
 345             "  \"mintime\" : minimum timestamp appropriate for next block\n"
 346             "  \"curtime\" : current timestamp\n"
 347             "  \"mutable\" : list of ways the block template may be changed\n"
 348             "  \"noncerange\" : range of valid nonces\n"
 349             "  \"sigoplimit\" : limit of sigops in blocks\n"
 350             "  \"sizelimit\" : limit of block size\n"
 351             "  \"bits\" : compressed target of next block\n"
 352             "  \"height\" : height of the next block\n"
 353             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 354
 355     std::string strMode = "template";
 356     if (params.size() > 0)
 357     {
 358         const Object& oparam = params[0].get_obj();
 359         const Value& modeval = find_value(oparam, "mode");
 360         if (modeval.type() == str_type)
 361             strMode = modeval.get_str();
 362         else if (modeval.type() == null_type)
 363         {
 364             /* Do nothing */
 365         }
 366         else
 367             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 368     }
 369
 370     if (strMode != "template")
 371         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 372
 373     if (vNodes.empty())
 374         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 375
 376     if (IsInitialBlockDownload())
 377         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 378
 379     static CReserveKey reservekey(pwalletMain);
 380
 381     // Update block
 382     static unsigned int nTransactionsUpdatedLast;
 383     static CBlockIndex* pindexPrev;
 384     static int64 nStart;
 385     static CBlock* pblock;
 386     if (pindexPrev != pindexBest ||
 387         (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5))
 388     {
 389         // Clear pindexPrev so future calls make a new block, despite any failures from here on
 390         pindexPrev = NULL;
 391
 392         // Store the pindexBest used before CreateNewBlock, to avoid races
 393         nTransactionsUpdatedLast = nTransactionsUpdated;
 394         CBlockIndex* pindexPrevNew = pindexBest;
 395         nStart = GetTime();
 396
 397         // Create new block
 398         if(pblock)
 399         {
 400             delete pblock;
 401             pblock = NULL;
 402         }
 403         pblock = CreateNewBlock(pwalletMain);
 404         if (!pblock)
 405             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 406
 407         // Need to update only after we know CreateNewBlock succeeded
 408         pindexPrev = pindexPrevNew;
 409     }
 410
 411     // Update nTime
 412     pblock->UpdateTime(pindexPrev);
 413     pblock->nNonce = 0;
 414
 415     Array transactions;
 416     map<uint256, int64_t> setTxIndex;
 417     int i = 0;
 418     CTxDB txdb("r");
 419     BOOST_FOREACH (CTransaction& tx, pblock->vtx)
 420     {
 421         uint256 txHash = tx.GetHash();
 422         setTxIndex[txHash] = i++;
 423
 424         if (tx.IsCoinBase() || tx.IsCoinStake())
 425             continue;
 426
 427         Object entry;
 428
 429         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 430         ssTx << tx;
 431         entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end())));
 432
 433         entry.push_back(Pair("hash", txHash.GetHex()));
 434
 435         MapPrevTx mapInputs;
 436         map<uint256, CTxIndex> mapUnused;
 437         bool fInvalid = false;
 438         if (tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid))
 439         {
 440             entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(mapInputs) - tx.GetValueOut())));
 441
 442             Array deps;
 443             BOOST_FOREACH (MapPrevTx::value_type& inp, mapInputs)
 444             {
 445                 if (setTxIndex.count(inp.first))
 446                     deps.push_back(setTxIndex[inp.first]);
 447             }
 448             entry.push_back(Pair("depends", deps));
 449
 450             int64_t nSigOps = tx.GetLegacySigOpCount();
 451             nSigOps += tx.GetP2SHSigOpCount(mapInputs);
 452             entry.push_back(Pair("sigops", nSigOps));
 453         }
 454
 455         transactions.push_back(entry);
 456     }
 457
 458     Object aux;
 459     aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
 460
 461     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 462
 463     static Array aMutable;
 464     if (aMutable.empty())
 465     {
 466         aMutable.push_back("time");
 467         aMutable.push_back("transactions");
 468         aMutable.push_back("prevblock");
 469     }
 470
 471     Object result;
 472     result.push_back(Pair("version", pblock->nVersion));
 473     result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
 474     result.push_back(Pair("transactions", transactions));
 475     result.push_back(Pair("coinbaseaux", aux));
 476     result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue));
 477     result.push_back(Pair("target", hashTarget.GetHex()));
 478     result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
 479     result.push_back(Pair("mutable", aMutable));
 480     result.push_back(Pair("noncerange", "00000000ffffffff"));
 481     result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS));
 482     result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE));
 483     result.push_back(Pair("curtime", (int64_t)pblock->nTime));
 484     result.push_back(Pair("bits", HexBits(pblock->nBits)));
 485     result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
 486
 487     return result;
 488 }
 489
 490 Value submitblock(const Array& params, bool fHelp)
 491 {
 492     if (fHelp || params.size() < 1 || params.size() > 2)
 493         throw runtime_error(
 494             "submitblock <hex data> [optional-params-obj]\n"
 495             "[optional-params-obj] parameter is currently ignored.\n"
 496             "Attempts to submit new block to network.\n"
 497             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 498
 499     vector<unsigned char> blockData(ParseHex(params[0].get_str()));
 500     CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
 501     CBlock block;
 502     try {
 503         ssBlock >> block;
 504     }
 505     catch (std::exception &e) {
 506         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 507     }
 508
 509     if (!fTestNet && block.GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 510     {
 511         if (!block.SignBlock(*pwalletMain))
 512             throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 513     }
 514
 515     bool fAccepted = ProcessBlock(NULL, &block);
 516     if (!fAccepted)
 517         return "rejected";
 518
 519     return Value::null;
 520 }
 521