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     double dStakeKernelsTriedAvg = 0;
  22     int nPoWInterval = 72, nPoSInterval = 72, nStakesHandled = 0, nStakesTime = 0;
  23     int64 nTargetSpacingWorkMin = 30, nTargetSpacingWork = 30;
  24
  25     CBlockIndex* pindex = pindexGenesisBlock;
  26     CBlockIndex* pindexPrevWork = pindexGenesisBlock;
  27     CBlockIndex* pindexPrevStake = NULL;
  28
  29     while (pindex)
  30     {
  31         if (pindex->IsProofOfWork())
  32         {
  33             int64 nActualSpacingWork = pindex->GetBlockTime() - pindexPrevWork->GetBlockTime();
  34             nTargetSpacingWork = ((nPoWInterval - 1) * nTargetSpacingWork + nActualSpacingWork + nActualSpacingWork) / (nPoWInterval + 1);
  35             nTargetSpacingWork = max(nTargetSpacingWork, nTargetSpacingWorkMin);
  36             pindexPrevWork = pindex;
  37         }
  38
  39         pindex = pindex->pnext;
  40     }
  41
  42
  43     pindex = pindexBest;
  44
  45     while (pindex && nStakesHandled < nPoSInterval)
  46     {
  47         if (pindex->IsProofOfStake())
  48         {
  49             dStakeKernelsTriedAvg += GetDifficulty(pindex) * 4294967296;
  50             nStakesTime += pindexPrevStake ? (pindexPrevStake->nTime - pindex->nTime) : 0;
  51             pindexPrevStake = pindex;
  52             nStakesHandled++;
  53         }
  54
  55         pindex = pindex->pprev;
  56     }
  57
  58     double dNetworkMhps = GetDifficulty() * 4294.967296 / nTargetSpacingWork;
  59     double dNetworkWeight = dStakeKernelsTriedAvg / nStakesTime;
  60
  61     Object obj;
  62     obj.push_back(Pair("blocks",        (int)nBestHeight));
  63     obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
  64     obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
  65     obj.push_back(Pair("difficulty",    (double)GetDifficulty()));
  66     obj.push_back(Pair("blockvalue",    (uint64_t)GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits)));
  67     obj.push_back(Pair("netmhashps",     dNetworkMhps));
  68     obj.push_back(Pair("netstakeweight", dNetworkWeight));
  69     obj.push_back(Pair("errors",        GetWarnings("statusbar")));
  70     obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
  71     obj.push_back(Pair("stakeweight",    (uint64_t)pwalletMain->GetStakeWeight(*pwalletMain, STAKE_NORMAL)));
  72     obj.push_back(Pair("minweight",    (uint64_t)pwalletMain->GetStakeWeight(*pwalletMain, STAKE_MINWEIGHT)));
  73     obj.push_back(Pair("maxweight",    (uint64_t)pwalletMain->GetStakeWeight(*pwalletMain, STAKE_MAXWEIGHT)));
  74     obj.push_back(Pair("stakeinterest",    (uint64_t)GetProofOfStakeReward(0, GetLastBlockIndex(pindexBest, true)->nBits, GetLastBlockIndex(pindexBest, true)->nTime, true)));
  75     obj.push_back(Pair("testnet",       fTestNet));
  76     return obj;
  77 }
  78
  79 Value getworkex(const Array& params, bool fHelp)
  80 {
  81     if (fHelp || params.size() > 2)
  82         throw runtime_error(
  83             "getworkex [data, coinbase]\n"
  84             "If [data, coinbase] is not specified, returns extended work data.\n"
  85         );
  86
  87     if (vNodes.empty())
  88         throw JSONRPCError(-9, "NovaCoin is not connected!");
  89
  90     if (IsInitialBlockDownload())
  91         throw JSONRPCError(-10, "NovaCoin is downloading blocks...");
  92
  93     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
  94     static mapNewBlock_t mapNewBlock;
  95     static vector<CBlock*> vNewBlock;
  96     static CReserveKey reservekey(pwalletMain);
  97
  98     if (params.size() == 0)
  99     {
 100         // Update block
 101         static unsigned int nTransactionsUpdatedLast;
 102         static CBlockIndex* pindexPrev;
 103         static int64 nStart;
 104         static CBlock* pblock;
 105         if (pindexPrev != pindexBest ||
 106             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 107         {
 108             if (pindexPrev != pindexBest)
 109             {
 110                 // Deallocate old blocks since they're obsolete now
 111                 mapNewBlock.clear();
 112                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 113                     delete pblock;
 114                 vNewBlock.clear();
 115             }
 116             nTransactionsUpdatedLast = nTransactionsUpdated;
 117             pindexPrev = pindexBest;
 118             nStart = GetTime();
 119
 120             // Create new block
 121             pblock = CreateNewBlock(pwalletMain);
 122             if (!pblock)
 123                 throw JSONRPCError(-7, "Out of memory");
 124             vNewBlock.push_back(pblock);
 125         }
 126
 127         // Update nTime
 128         pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 129         pblock->nNonce = 0;
 130
 131         // Update nExtraNonce
 132         static unsigned int nExtraNonce = 0;
 133         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 134
 135         // Save
 136         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 137
 138         // Prebuild hash buffers
 139         char pmidstate[32];
 140         char pdata[128];
 141         char phash1[64];
 142         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 143
 144         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 145
 146         CTransaction coinbaseTx = pblock->vtx[0];
 147         std::vector<uint256> merkle = pblock->GetMerkleBranch(0);
 148
 149         Object result;
 150         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 151         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 152
 153         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 154         ssTx << coinbaseTx;
 155         result.push_back(Pair("coinbase", HexStr(ssTx.begin(), ssTx.end())));
 156
 157         Array merkle_arr;
 158
 159         BOOST_FOREACH(uint256 merkleh, merkle) {
 160             merkle_arr.push_back(HexStr(BEGIN(merkleh), END(merkleh)));
 161         }
 162
 163         result.push_back(Pair("merkle", merkle_arr));
 164
 165
 166         return result;
 167     }
 168     else
 169     {
 170         // Parse parameters
 171         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 172         vector<unsigned char> coinbase;
 173
 174         if(params.size() == 2)
 175             coinbase = ParseHex(params[1].get_str());
 176
 177         if (vchData.size() != 128)
 178             throw JSONRPCError(-8, "Invalid parameter");
 179
 180         CBlock* pdata = (CBlock*)&vchData[0];
 181
 182         // Byte reverse
 183         for (int i = 0; i < 128/4; i++)
 184             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 185
 186         // Get saved block
 187         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 188             return false;
 189         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 190
 191         pblock->nTime = pdata->nTime;
 192         pblock->nNonce = pdata->nNonce;
 193
 194         if(coinbase.size() == 0)
 195             pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 196         else
 197             CDataStream(coinbase, SER_NETWORK, PROTOCOL_VERSION) >> pblock->vtx[0]; // FIXME - HACK!
 198
 199         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 200
 201         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 202         {
 203             if (!pblock->SignBlock(*pwalletMain))
 204                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 205         }
 206
 207         return CheckWork(pblock, *pwalletMain, reservekey);
 208     }
 209 }
 210
 211
 212 Value getwork(const Array& params, bool fHelp)
 213 {
 214     if (fHelp || params.size() > 1)
 215         throw runtime_error(
 216             "getwork [data]\n"
 217             "If [data] is not specified, returns formatted hash data to work on:\n"
 218             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 219             "  \"data\" : block data\n"
 220             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 221             "  \"target\" : little endian hash target\n"
 222             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 223
 224     if (vNodes.empty())
 225         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 226
 227     if (IsInitialBlockDownload())
 228         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 229
 230     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 231     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 232     static vector<CBlock*> vNewBlock;
 233     static CReserveKey reservekey(pwalletMain);
 234
 235     if (params.size() == 0)
 236     {
 237         // Update block
 238         static unsigned int nTransactionsUpdatedLast;
 239         static CBlockIndex* pindexPrev;
 240         static int64 nStart;
 241         static CBlock* pblock;
 242         if (pindexPrev != pindexBest ||
 243             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 244         {
 245             if (pindexPrev != pindexBest)
 246             {
 247                 // Deallocate old blocks since they're obsolete now
 248                 mapNewBlock.clear();
 249                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 250                     delete pblock;
 251                 vNewBlock.clear();
 252             }
 253
 254             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 255             pindexPrev = NULL;
 256
 257             // Store the pindexBest used before CreateNewBlock, to avoid races
 258             nTransactionsUpdatedLast = nTransactionsUpdated;
 259             CBlockIndex* pindexPrevNew = pindexBest;
 260             nStart = GetTime();
 261
 262             // Create new block
 263             pblock = CreateNewBlock(pwalletMain);
 264             if (!pblock)
 265                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 266             vNewBlock.push_back(pblock);
 267
 268             // Need to update only after we know CreateNewBlock succeeded
 269             pindexPrev = pindexPrevNew;
 270         }
 271
 272         // Update nTime
 273         pblock->UpdateTime(pindexPrev);
 274         pblock->nNonce = 0;
 275
 276         // Update nExtraNonce
 277         static unsigned int nExtraNonce = 0;
 278         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 279
 280         // Save
 281         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 282
 283         // Pre-build hash buffers
 284         char pmidstate[32];
 285         char pdata[128];
 286         char phash1[64];
 287         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 288
 289         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 290
 291         Object result;
 292         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 293         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 294         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 295         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 296         return result;
 297     }
 298     else
 299     {
 300         // Parse parameters
 301         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 302         if (vchData.size() != 128)
 303             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 304         CBlock* pdata = (CBlock*)&vchData[0];
 305
 306         // Byte reverse
 307         for (int i = 0; i < 128/4; i++)
 308             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 309
 310         // Get saved block
 311         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 312             return false;
 313         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 314
 315         pblock->nTime = pdata->nTime;
 316         pblock->nNonce = pdata->nNonce;
 317         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 318         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 319
 320         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 321         {
 322             if (!pblock->SignBlock(*pwalletMain))
 323                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 324         }
 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 (!fTestNet && block.GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 508     {
 509         if (!block.SignBlock(*pwalletMain))
 510             throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 511     }
 512
 513     bool fAccepted = ProcessBlock(NULL, &block);
 514     if (!fAccepted)
 515         return "rejected";
 516
 517     return Value::null;
 518 }
 519