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 getsubsidy(const Array& params, bool fHelp)
  17 {
  18     if (fHelp || params.size() > 1)
  19         throw runtime_error(
  20             "getsubsidy [nTarget]\n"
  21             "Returns proof-of-work subsidy value for the specified value of target.");
  22
  23     unsigned int nBits = 0;
  24
  25     if (params.size() != 0)
  26     {
  27         CBigNum bnTarget(uint256(params[0].get_str()));
  28         nBits = bnTarget.GetCompact();
  29     }
  30     else
  31     {
  32         nBits = GetNextTargetRequired(pindexBest, false);
  33     }
  34
  35     return (uint64_t)GetProofOfWorkReward(nBits);
  36 }
  37
  38 Value getmininginfo(const Array& params, bool fHelp)
  39 {
  40     if (fHelp || params.size() != 0)
  41         throw runtime_error(
  42             "getmininginfo\n"
  43             "Returns an object containing mining-related information.");
  44
  45     uint64 nMinWeight = 0, nMaxWeight = 0, nWeight = 0;
  46     pwalletMain->GetStakeWeight(*pwalletMain, nMinWeight, nMaxWeight, nWeight);
  47
  48     Object obj, diff, weight;
  49     obj.push_back(Pair("blocks",        (int)nBestHeight));
  50     obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
  51     obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
  52
  53     diff.push_back(Pair("proof-of-work",        GetDifficulty()));
  54     diff.push_back(Pair("proof-of-stake",       GetDifficulty(GetLastBlockIndex(pindexBest, true))));
  55     diff.push_back(Pair("search-interval",      (int)nLastCoinStakeSearchInterval));
  56     obj.push_back(Pair("difficulty",    diff));
  57
  58     obj.push_back(Pair("blockvalue",    (uint64_t)GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits)));
  59     obj.push_back(Pair("netmhashps",     GetPoWMHashPS()));
  60     obj.push_back(Pair("netstakeweight", GetPoSKernelPS()));
  61     obj.push_back(Pair("errors",        GetWarnings("statusbar")));
  62     obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
  63
  64     weight.push_back(Pair("minimum",    (uint64_t)nMinWeight));
  65     weight.push_back(Pair("maximum",    (uint64_t)nMaxWeight));
  66     weight.push_back(Pair("combined",  (uint64_t)nWeight));
  67     obj.push_back(Pair("stakeweight", weight));
  68
  69     obj.push_back(Pair("stakeinterest",    (uint64_t)GetProofOfStakeReward(0, GetLastBlockIndex(pindexBest, true)->nBits, GetLastBlockIndex(pindexBest, true)->nTime, true)));
  70     obj.push_back(Pair("testnet",       fTestNet));
  71     return obj;
  72 }
  73
  74 Value getworkex(const Array& params, bool fHelp)
  75 {
  76     if (fHelp || params.size() > 2)
  77         throw runtime_error(
  78             "getworkex [data, coinbase]\n"
  79             "If [data, coinbase] is not specified, returns extended work data.\n"
  80         );
  81
  82     if (vNodes.empty())
  83         throw JSONRPCError(-9, "NovaCoin is not connected!");
  84
  85     if (IsInitialBlockDownload())
  86         throw JSONRPCError(-10, "NovaCoin is downloading blocks...");
  87
  88     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
  89     static mapNewBlock_t mapNewBlock;
  90     static vector<CBlock*> vNewBlock;
  91     static CReserveKey reservekey(pwalletMain);
  92
  93     if (params.size() == 0)
  94     {
  95         // Update block
  96         static unsigned int nTransactionsUpdatedLast;
  97         static CBlockIndex* pindexPrev;
  98         static int64 nStart;
  99         static CBlock* pblock;
 100         if (pindexPrev != pindexBest ||
 101             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 102         {
 103             if (pindexPrev != pindexBest)
 104             {
 105                 // Deallocate old blocks since they're obsolete now
 106                 mapNewBlock.clear();
 107                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 108                     delete pblock;
 109                 vNewBlock.clear();
 110             }
 111             nTransactionsUpdatedLast = nTransactionsUpdated;
 112             pindexPrev = pindexBest;
 113             nStart = GetTime();
 114
 115             // Create new block
 116             pblock = CreateNewBlock(pwalletMain);
 117             if (!pblock)
 118                 throw JSONRPCError(-7, "Out of memory");
 119             vNewBlock.push_back(pblock);
 120         }
 121
 122         // Update nTime
 123         pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 124         pblock->nNonce = 0;
 125
 126         // Update nExtraNonce
 127         static unsigned int nExtraNonce = 0;
 128         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 129
 130         // Save
 131         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 132
 133         // Prebuild hash buffers
 134         char pmidstate[32];
 135         char pdata[128];
 136         char phash1[64];
 137         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 138
 139         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 140
 141         CTransaction coinbaseTx = pblock->vtx[0];
 142         std::vector<uint256> merkle = pblock->GetMerkleBranch(0);
 143
 144         Object result;
 145         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 146         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 147
 148         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 149         ssTx << coinbaseTx;
 150         result.push_back(Pair("coinbase", HexStr(ssTx.begin(), ssTx.end())));
 151
 152         Array merkle_arr;
 153
 154         BOOST_FOREACH(uint256 merkleh, merkle) {
 155             merkle_arr.push_back(HexStr(BEGIN(merkleh), END(merkleh)));
 156         }
 157
 158         result.push_back(Pair("merkle", merkle_arr));
 159
 160
 161         return result;
 162     }
 163     else
 164     {
 165         // Parse parameters
 166         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 167         vector<unsigned char> coinbase;
 168
 169         if(params.size() == 2)
 170             coinbase = ParseHex(params[1].get_str());
 171
 172         if (vchData.size() != 128)
 173             throw JSONRPCError(-8, "Invalid parameter");
 174
 175         CBlock* pdata = (CBlock*)&vchData[0];
 176
 177         // Byte reverse
 178         for (int i = 0; i < 128/4; i++)
 179             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 180
 181         // Get saved block
 182         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 183             return false;
 184         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 185
 186         pblock->nTime = pdata->nTime;
 187         pblock->nNonce = pdata->nNonce;
 188
 189         if(coinbase.size() == 0)
 190             pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 191         else
 192             CDataStream(coinbase, SER_NETWORK, PROTOCOL_VERSION) >> pblock->vtx[0]; // FIXME - HACK!
 193
 194         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 195
 196         return CheckWork(pblock, *pwalletMain, reservekey);
 197     }
 198 }
 199
 200
 201 Value getwork(const Array& params, bool fHelp)
 202 {
 203     if (fHelp || params.size() > 1)
 204         throw runtime_error(
 205             "getwork [data]\n"
 206             "If [data] is not specified, returns formatted hash data to work on:\n"
 207             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 208             "  \"data\" : block data\n"
 209             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 210             "  \"target\" : little endian hash target\n"
 211             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 212
 213     if (vNodes.empty())
 214         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 215
 216     if (IsInitialBlockDownload())
 217         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 218
 219     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 220     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 221     static vector<CBlock*> vNewBlock;
 222     static CReserveKey reservekey(pwalletMain);
 223
 224     if (params.size() == 0)
 225     {
 226         // Update block
 227         static unsigned int nTransactionsUpdatedLast;
 228         static CBlockIndex* pindexPrev;
 229         static int64 nStart;
 230         static CBlock* pblock;
 231         if (pindexPrev != pindexBest ||
 232             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 233         {
 234             if (pindexPrev != pindexBest)
 235             {
 236                 // Deallocate old blocks since they're obsolete now
 237                 mapNewBlock.clear();
 238                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 239                     delete pblock;
 240                 vNewBlock.clear();
 241             }
 242
 243             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 244             pindexPrev = NULL;
 245
 246             // Store the pindexBest used before CreateNewBlock, to avoid races
 247             nTransactionsUpdatedLast = nTransactionsUpdated;
 248             CBlockIndex* pindexPrevNew = pindexBest;
 249             nStart = GetTime();
 250
 251             // Create new block
 252             pblock = CreateNewBlock(pwalletMain);
 253             if (!pblock)
 254                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 255             vNewBlock.push_back(pblock);
 256
 257             // Need to update only after we know CreateNewBlock succeeded
 258             pindexPrev = pindexPrevNew;
 259         }
 260
 261         // Update nTime
 262         pblock->UpdateTime(pindexPrev);
 263         pblock->nNonce = 0;
 264
 265         // Update nExtraNonce
 266         static unsigned int nExtraNonce = 0;
 267         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 268
 269         // Save
 270         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 271
 272         // Pre-build hash buffers
 273         char pmidstate[32];
 274         char pdata[128];
 275         char phash1[64];
 276         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 277
 278         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 279
 280         Object result;
 281         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 282         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 283         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 284         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 285         return result;
 286     }
 287     else
 288     {
 289         // Parse parameters
 290         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 291         if (vchData.size() != 128)
 292             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 293         CBlock* pdata = (CBlock*)&vchData[0];
 294
 295         // Byte reverse
 296         for (int i = 0; i < 128/4; i++)
 297             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 298
 299         // Get saved block
 300         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 301             return false;
 302         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 303
 304         pblock->nTime = pdata->nTime;
 305         pblock->nNonce = pdata->nNonce;
 306         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 307         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 308
 309         return CheckWork(pblock, *pwalletMain, reservekey);
 310     }
 311 }
 312
 313
 314 Value getblocktemplate(const Array& params, bool fHelp)
 315 {
 316     if (fHelp || params.size() > 1)
 317         throw runtime_error(
 318             "getblocktemplate [params]\n"
 319             "Returns data needed to construct a block to work on:\n"
 320             "  \"version\" : block version\n"
 321             "  \"previousblockhash\" : hash of current highest block\n"
 322             "  \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n"
 323             "  \"coinbaseaux\" : data that should be included in coinbase\n"
 324             "  \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n"
 325             "  \"target\" : hash target\n"
 326             "  \"mintime\" : minimum timestamp appropriate for next block\n"
 327             "  \"curtime\" : current timestamp\n"
 328             "  \"mutable\" : list of ways the block template may be changed\n"
 329             "  \"noncerange\" : range of valid nonces\n"
 330             "  \"sigoplimit\" : limit of sigops in blocks\n"
 331             "  \"sizelimit\" : limit of block size\n"
 332             "  \"bits\" : compressed target of next block\n"
 333             "  \"height\" : height of the next block\n"
 334             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 335
 336     std::string strMode = "template";
 337     if (params.size() > 0)
 338     {
 339         const Object& oparam = params[0].get_obj();
 340         const Value& modeval = find_value(oparam, "mode");
 341         if (modeval.type() == str_type)
 342             strMode = modeval.get_str();
 343         else if (modeval.type() == null_type)
 344         {
 345             /* Do nothing */
 346         }
 347         else
 348             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 349     }
 350
 351     if (strMode != "template")
 352         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 353
 354     if (vNodes.empty())
 355         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 356
 357     if (IsInitialBlockDownload())
 358         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 359
 360     static CReserveKey reservekey(pwalletMain);
 361
 362     // Update block
 363     static unsigned int nTransactionsUpdatedLast;
 364     static CBlockIndex* pindexPrev;
 365     static int64 nStart;
 366     static CBlock* pblock;
 367     if (pindexPrev != pindexBest ||
 368         (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5))
 369     {
 370         // Clear pindexPrev so future calls make a new block, despite any failures from here on
 371         pindexPrev = NULL;
 372
 373         // Store the pindexBest used before CreateNewBlock, to avoid races
 374         nTransactionsUpdatedLast = nTransactionsUpdated;
 375         CBlockIndex* pindexPrevNew = pindexBest;
 376         nStart = GetTime();
 377
 378         // Create new block
 379         if(pblock)
 380         {
 381             delete pblock;
 382             pblock = NULL;
 383         }
 384         pblock = CreateNewBlock(pwalletMain);
 385         if (!pblock)
 386             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 387
 388         // Need to update only after we know CreateNewBlock succeeded
 389         pindexPrev = pindexPrevNew;
 390     }
 391
 392     // Update nTime
 393     pblock->UpdateTime(pindexPrev);
 394     pblock->nNonce = 0;
 395
 396     Array transactions;
 397     map<uint256, int64_t> setTxIndex;
 398     int i = 0;
 399     CTxDB txdb("r");
 400     BOOST_FOREACH (CTransaction& tx, pblock->vtx)
 401     {
 402         uint256 txHash = tx.GetHash();
 403         setTxIndex[txHash] = i++;
 404
 405         if (tx.IsCoinBase() || tx.IsCoinStake())
 406             continue;
 407
 408         Object entry;
 409
 410         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 411         ssTx << tx;
 412         entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end())));
 413
 414         entry.push_back(Pair("hash", txHash.GetHex()));
 415
 416         MapPrevTx mapInputs;
 417         map<uint256, CTxIndex> mapUnused;
 418         bool fInvalid = false;
 419         if (tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid))
 420         {
 421             entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(mapInputs) - tx.GetValueOut())));
 422
 423             Array deps;
 424             BOOST_FOREACH (MapPrevTx::value_type& inp, mapInputs)
 425             {
 426                 if (setTxIndex.count(inp.first))
 427                     deps.push_back(setTxIndex[inp.first]);
 428             }
 429             entry.push_back(Pair("depends", deps));
 430
 431             int64_t nSigOps = tx.GetLegacySigOpCount();
 432             nSigOps += tx.GetP2SHSigOpCount(mapInputs);
 433             entry.push_back(Pair("sigops", nSigOps));
 434         }
 435
 436         transactions.push_back(entry);
 437     }
 438
 439     Object aux;
 440     aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
 441
 442     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 443
 444     static Array aMutable;
 445     if (aMutable.empty())
 446     {
 447         aMutable.push_back("time");
 448         aMutable.push_back("transactions");
 449         aMutable.push_back("prevblock");
 450     }
 451
 452     Object result;
 453     result.push_back(Pair("version", pblock->nVersion));
 454     result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
 455     result.push_back(Pair("transactions", transactions));
 456     result.push_back(Pair("coinbaseaux", aux));
 457     result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue));
 458     result.push_back(Pair("target", hashTarget.GetHex()));
 459     result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
 460     result.push_back(Pair("mutable", aMutable));
 461     result.push_back(Pair("noncerange", "00000000ffffffff"));
 462     result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS));
 463     result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE));
 464     result.push_back(Pair("curtime", (int64_t)pblock->nTime));
 465     result.push_back(Pair("bits", HexBits(pblock->nBits)));
 466     result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
 467
 468     return result;
 469 }
 470
 471 Value submitblock(const Array& params, bool fHelp)
 472 {
 473     if (fHelp || params.size() < 1 || params.size() > 2)
 474         throw runtime_error(
 475             "submitblock <hex data> [optional-params-obj]\n"
 476             "[optional-params-obj] parameter is currently ignored.\n"
 477             "Attempts to submit new block to network.\n"
 478             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 479
 480     vector<unsigned char> blockData(ParseHex(params[0].get_str()));
 481     CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
 482     CBlock block;
 483     try {
 484         ssBlock >> block;
 485     }
 486     catch (std::exception &e) {
 487         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 488     }
 489
 490     bool fAccepted = ProcessBlock(NULL, &block);
 491     if (!fAccepted)
 492         return "rejected";
 493
 494     return Value::null;
 495 }
 496