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 "kernel.h"
  12 #include "bitcoinrpc.h"
  13
  14 using namespace json_spirit;
  15 using namespace std;
  16
  17 extern uint256 nPoWBase;
  18
  19 Value getsubsidy(const Array& params, bool fHelp)
  20 {
  21     if (fHelp || params.size() > 1)
  22         throw runtime_error(
  23             "getsubsidy [nTarget]\n"
  24             "Returns proof-of-work subsidy value for the specified value of target.");
  25
  26     unsigned int nBits = 0;
  27
  28     if (params.size() != 0)
  29     {
  30         CBigNum bnTarget(uint256(params[0].get_str()));
  31         nBits = bnTarget.GetCompact();
  32     }
  33     else
  34     {
  35         nBits = GetNextTargetRequired(pindexBest, false);
  36     }
  37
  38     return (uint64_t)GetProofOfWorkReward(nBits);
  39 }
  40
  41 Value getmininginfo(const Array& params, bool fHelp)
  42 {
  43     if (fHelp || params.size() != 0)
  44         throw runtime_error(
  45             "getmininginfo\n"
  46             "Returns an object containing mining-related information.");
  47
  48     float nKernelsRate = 0, nCoinDaysRate = 0;
  49     pwalletMain->GetStakeStats(nKernelsRate, nCoinDaysRate);
  50
  51     Object obj, diff, weight;
  52     obj.push_back(Pair("blocks",        (int)nBestHeight));
  53     obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
  54     obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
  55
  56     diff.push_back(Pair("proof-of-work",        GetDifficulty()));
  57     diff.push_back(Pair("proof-of-stake",       GetDifficulty(GetLastBlockIndex(pindexBest, true))));
  58     diff.push_back(Pair("search-interval",      (int)nLastCoinStakeSearchInterval));
  59     obj.push_back(Pair("difficulty",    diff));
  60
  61     obj.push_back(Pair("blockvalue",    (uint64_t)GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits)));
  62     obj.push_back(Pair("netmhashps",     GetPoWMHashPS()));
  63     obj.push_back(Pair("netstakeweight", GetPoSKernelPS()));
  64     obj.push_back(Pair("errors",        GetWarnings("statusbar")));
  65     obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
  66
  67     weight.push_back(Pair("kernelsrate",   nKernelsRate));
  68     weight.push_back(Pair("cdaysrate",   nCoinDaysRate));
  69     obj.push_back(Pair("stakestats", weight));
  70
  71     obj.push_back(Pair("stakeinterest",    (uint64_t)GetProofOfStakeReward(0, GetLastBlockIndex(pindexBest, true)->nBits, GetLastBlockIndex(pindexBest, true)->nTime, true)));
  72     obj.push_back(Pair("testnet",       fTestNet));
  73     return obj;
  74 }
  75
  76 Value scaninput(const Array& params, bool fHelp)
  77 {
  78     if (fHelp || params.size() > 4 || params.size() < 2)
  79         throw runtime_error(
  80             "scaninput <txid> <nout> [difficulty] [days]\n"
  81             "Scan specified input for suitable kernel solutions.\n"
  82             "    [difficulty] - upper limit for difficulty, current difficulty by default;\n"
  83             "    [days] - time window, 365 days by default.\n"
  84         );
  85
  86
  87     uint256 hash;
  88     hash.SetHex(params[0].get_str());
  89
  90     uint32_t nOut = params[1].get_int(), nBits = GetNextTargetRequired(pindexBest, true), nDays = 365;
  91
  92     if (params.size() > 2)
  93     {
  94         CBigNum bnTarget(nPoWBase);
  95         bnTarget *= 1000;
  96         bnTarget /= (int) (params[2].get_real() * 1000);
  97         nBits = bnTarget.GetCompact();
  98     }
  99
 100     if (params.size() > 3)
 101     {
 102         nDays = params[3].get_int();
 103     }
 104
 105     CTransaction tx;
 106     uint256 hashBlock = 0;
 107     if (GetTransaction(hash, tx, hashBlock))
 108     {
 109         std::pair<uint256, uint32_t> solution;
 110         if (ScanInputForStakeKernelHash(tx, nOut, nBits, nDays * 86400, solution))
 111         {
 112             Object r;
 113             r.push_back(Pair("hash", solution.first.GetHex()));
 114             r.push_back(Pair("time", DateTimeStrFormat(solution.second)));
 115
 116             return r;
 117         }
 118     }
 119     else
 120         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "No information available about transaction");
 121
 122     return Value::null;
 123 }
 124
 125 Value getworkex(const Array& params, bool fHelp)
 126 {
 127     if (fHelp || params.size() > 2)
 128         throw runtime_error(
 129             "getworkex [data, coinbase]\n"
 130             "If [data, coinbase] is not specified, returns extended work data.\n"
 131         );
 132
 133     if (vNodes.empty())
 134         throw JSONRPCError(-9, "NovaCoin is not connected!");
 135
 136     if (IsInitialBlockDownload())
 137         throw JSONRPCError(-10, "NovaCoin is downloading blocks...");
 138
 139     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 140     static mapNewBlock_t mapNewBlock;
 141     static vector<CBlock*> vNewBlock;
 142     static CReserveKey reservekey(pwalletMain);
 143
 144     if (params.size() == 0)
 145     {
 146         // Update block
 147         static unsigned int nTransactionsUpdatedLast;
 148         static CBlockIndex* pindexPrev;
 149         static int64_t nStart;
 150         static CBlock* pblock;
 151         if (pindexPrev != pindexBest ||
 152             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 153         {
 154             if (pindexPrev != pindexBest)
 155             {
 156                 // Deallocate old blocks since they're obsolete now
 157                 mapNewBlock.clear();
 158                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 159                     delete pblock;
 160                 vNewBlock.clear();
 161             }
 162             nTransactionsUpdatedLast = nTransactionsUpdated;
 163             pindexPrev = pindexBest;
 164             nStart = GetTime();
 165
 166             // Create new block
 167             pblock = CreateNewBlock(pwalletMain);
 168             if (!pblock)
 169                 throw JSONRPCError(-7, "Out of memory");
 170             vNewBlock.push_back(pblock);
 171         }
 172
 173         // Update nTime
 174         pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 175         pblock->nNonce = 0;
 176
 177         // Update nExtraNonce
 178         static unsigned int nExtraNonce = 0;
 179         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 180
 181         // Save
 182         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 183
 184         // Prebuild hash buffers
 185         char pmidstate[32];
 186         char pdata[128];
 187         char phash1[64];
 188         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 189
 190         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 191
 192         CTransaction coinbaseTx = pblock->vtx[0];
 193         std::vector<uint256> merkle = pblock->GetMerkleBranch(0);
 194
 195         Object result;
 196         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 197         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 198
 199         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 200         ssTx << coinbaseTx;
 201         result.push_back(Pair("coinbase", HexStr(ssTx.begin(), ssTx.end())));
 202
 203         Array merkle_arr;
 204
 205         BOOST_FOREACH(uint256 merkleh, merkle) {
 206             merkle_arr.push_back(HexStr(BEGIN(merkleh), END(merkleh)));
 207         }
 208
 209         result.push_back(Pair("merkle", merkle_arr));
 210
 211
 212         return result;
 213     }
 214     else
 215     {
 216         // Parse parameters
 217         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 218         vector<unsigned char> coinbase;
 219
 220         if(params.size() == 2)
 221             coinbase = ParseHex(params[1].get_str());
 222
 223         if (vchData.size() != 128)
 224             throw JSONRPCError(-8, "Invalid parameter");
 225
 226         CBlock* pdata = (CBlock*)&vchData[0];
 227
 228         // Byte reverse
 229         for (int i = 0; i < 128/4; i++)
 230             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 231
 232         // Get saved block
 233         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 234             return false;
 235         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 236
 237         pblock->nTime = pdata->nTime;
 238         pblock->nNonce = pdata->nNonce;
 239
 240         if(coinbase.size() == 0)
 241             pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 242         else
 243             CDataStream(coinbase, SER_NETWORK, PROTOCOL_VERSION) >> pblock->vtx[0]; // FIXME - HACK!
 244
 245         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 246
 247         return CheckWork(pblock, *pwalletMain, reservekey);
 248     }
 249 }
 250
 251
 252 Value getwork(const Array& params, bool fHelp)
 253 {
 254     if (fHelp || params.size() > 1)
 255         throw runtime_error(
 256             "getwork [data]\n"
 257             "If [data] is not specified, returns formatted hash data to work on:\n"
 258             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 259             "  \"data\" : block data\n"
 260             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 261             "  \"target\" : little endian hash target\n"
 262             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 263
 264     if (vNodes.empty())
 265         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 266
 267     if (IsInitialBlockDownload())
 268         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 269
 270     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 271     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 272     static vector<CBlock*> vNewBlock;
 273     static CReserveKey reservekey(pwalletMain);
 274
 275     if (params.size() == 0)
 276     {
 277         // Update block
 278         static unsigned int nTransactionsUpdatedLast;
 279         static CBlockIndex* pindexPrev;
 280         static int64_t nStart;
 281         static CBlock* pblock;
 282         if (pindexPrev != pindexBest ||
 283             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 284         {
 285             if (pindexPrev != pindexBest)
 286             {
 287                 // Deallocate old blocks since they're obsolete now
 288                 mapNewBlock.clear();
 289                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 290                     delete pblock;
 291                 vNewBlock.clear();
 292             }
 293
 294             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 295             pindexPrev = NULL;
 296
 297             // Store the pindexBest used before CreateNewBlock, to avoid races
 298             nTransactionsUpdatedLast = nTransactionsUpdated;
 299             CBlockIndex* pindexPrevNew = pindexBest;
 300             nStart = GetTime();
 301
 302             // Create new block
 303             pblock = CreateNewBlock(pwalletMain);
 304             if (!pblock)
 305                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 306             vNewBlock.push_back(pblock);
 307
 308             // Need to update only after we know CreateNewBlock succeeded
 309             pindexPrev = pindexPrevNew;
 310         }
 311
 312         // Update nTime
 313         pblock->UpdateTime(pindexPrev);
 314         pblock->nNonce = 0;
 315
 316         // Update nExtraNonce
 317         static unsigned int nExtraNonce = 0;
 318         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 319
 320         // Save
 321         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 322
 323         // Pre-build hash buffers
 324         char pmidstate[32];
 325         char pdata[128];
 326         char phash1[64];
 327         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 328
 329         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 330
 331         Object result;
 332         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 333         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 334         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 335         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 336         return result;
 337     }
 338     else
 339     {
 340         // Parse parameters
 341         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 342         if (vchData.size() != 128)
 343             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 344         CBlock* pdata = (CBlock*)&vchData[0];
 345
 346         // Byte reverse
 347         for (int i = 0; i < 128/4; i++)
 348             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 349
 350         // Get saved block
 351         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 352             return false;
 353         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 354
 355         pblock->nTime = pdata->nTime;
 356         pblock->nNonce = pdata->nNonce;
 357         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 358         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 359
 360         return CheckWork(pblock, *pwalletMain, reservekey);
 361     }
 362 }
 363
 364
 365 Value getblocktemplate(const Array& params, bool fHelp)
 366 {
 367     if (fHelp || params.size() > 1)
 368         throw runtime_error(
 369             "getblocktemplate [params]\n"
 370             "Returns data needed to construct a block to work on:\n"
 371             "  \"version\" : block version\n"
 372             "  \"previousblockhash\" : hash of current highest block\n"
 373             "  \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n"
 374             "  \"coinbaseaux\" : data that should be included in coinbase\n"
 375             "  \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n"
 376             "  \"target\" : hash target\n"
 377             "  \"mintime\" : minimum timestamp appropriate for next block\n"
 378             "  \"curtime\" : current timestamp\n"
 379             "  \"mutable\" : list of ways the block template may be changed\n"
 380             "  \"noncerange\" : range of valid nonces\n"
 381             "  \"sigoplimit\" : limit of sigops in blocks\n"
 382             "  \"sizelimit\" : limit of block size\n"
 383             "  \"bits\" : compressed target of next block\n"
 384             "  \"height\" : height of the next block\n"
 385             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 386
 387     std::string strMode = "template";
 388     if (params.size() > 0)
 389     {
 390         const Object& oparam = params[0].get_obj();
 391         const Value& modeval = find_value(oparam, "mode");
 392         if (modeval.type() == str_type)
 393             strMode = modeval.get_str();
 394         else if (modeval.type() == null_type)
 395         {
 396             /* Do nothing */
 397         }
 398         else
 399             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 400     }
 401
 402     if (strMode != "template")
 403         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 404
 405     if (vNodes.empty())
 406         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 407
 408     if (IsInitialBlockDownload())
 409         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 410
 411     static CReserveKey reservekey(pwalletMain);
 412
 413     // Update block
 414     static unsigned int nTransactionsUpdatedLast;
 415     static CBlockIndex* pindexPrev;
 416     static int64_t nStart;
 417     static CBlock* pblock;
 418     if (pindexPrev != pindexBest ||
 419         (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5))
 420     {
 421         // Clear pindexPrev so future calls make a new block, despite any failures from here on
 422         pindexPrev = NULL;
 423
 424         // Store the pindexBest used before CreateNewBlock, to avoid races
 425         nTransactionsUpdatedLast = nTransactionsUpdated;
 426         CBlockIndex* pindexPrevNew = pindexBest;
 427         nStart = GetTime();
 428
 429         // Create new block
 430         if(pblock)
 431         {
 432             delete pblock;
 433             pblock = NULL;
 434         }
 435         pblock = CreateNewBlock(pwalletMain);
 436         if (!pblock)
 437             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 438
 439         // Need to update only after we know CreateNewBlock succeeded
 440         pindexPrev = pindexPrevNew;
 441     }
 442
 443     // Update nTime
 444     pblock->UpdateTime(pindexPrev);
 445     pblock->nNonce = 0;
 446
 447     Array transactions;
 448     map<uint256, int64_t> setTxIndex;
 449     int i = 0;
 450     CTxDB txdb("r");
 451     BOOST_FOREACH (CTransaction& tx, pblock->vtx)
 452     {
 453         uint256 txHash = tx.GetHash();
 454         setTxIndex[txHash] = i++;
 455
 456         if (tx.IsCoinBase() || tx.IsCoinStake())
 457             continue;
 458
 459         Object entry;
 460
 461         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 462         ssTx << tx;
 463         entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end())));
 464
 465         entry.push_back(Pair("hash", txHash.GetHex()));
 466
 467         MapPrevTx mapInputs;
 468         map<uint256, CTxIndex> mapUnused;
 469         bool fInvalid = false;
 470         if (tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid))
 471         {
 472             entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(mapInputs) - tx.GetValueOut())));
 473
 474             Array deps;
 475             BOOST_FOREACH (MapPrevTx::value_type& inp, mapInputs)
 476             {
 477                 if (setTxIndex.count(inp.first))
 478                     deps.push_back(setTxIndex[inp.first]);
 479             }
 480             entry.push_back(Pair("depends", deps));
 481
 482             int64_t nSigOps = tx.GetLegacySigOpCount();
 483             nSigOps += tx.GetP2SHSigOpCount(mapInputs);
 484             entry.push_back(Pair("sigops", nSigOps));
 485         }
 486
 487         transactions.push_back(entry);
 488     }
 489
 490     Object aux;
 491     aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
 492
 493     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 494
 495     static Array aMutable;
 496     if (aMutable.empty())
 497     {
 498         aMutable.push_back("time");
 499         aMutable.push_back("transactions");
 500         aMutable.push_back("prevblock");
 501     }
 502
 503     Object result;
 504     result.push_back(Pair("version", pblock->nVersion));
 505     result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
 506     result.push_back(Pair("transactions", transactions));
 507     result.push_back(Pair("coinbaseaux", aux));
 508     result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue));
 509     result.push_back(Pair("target", hashTarget.GetHex()));
 510     result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
 511     result.push_back(Pair("mutable", aMutable));
 512     result.push_back(Pair("noncerange", "00000000ffffffff"));
 513     result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS));
 514     result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE));
 515     result.push_back(Pair("curtime", (int64_t)pblock->nTime));
 516     result.push_back(Pair("bits", HexBits(pblock->nBits)));
 517     result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
 518
 519     return result;
 520 }
 521
 522 Value submitblock(const Array& params, bool fHelp)
 523 {
 524     if (fHelp || params.size() < 1 || params.size() > 2)
 525         throw runtime_error(
 526             "submitblock <hex data> [optional-params-obj]\n"
 527             "[optional-params-obj] parameter is currently ignored.\n"
 528             "Attempts to submit new block to network.\n"
 529             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 530
 531     vector<unsigned char> blockData(ParseHex(params[0].get_str()));
 532     CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
 533     CBlock block;
 534     try {
 535         ssBlock >> block;
 536     }
 537     catch (std::exception &e) {
 538         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 539     }
 540
 541     bool fAccepted = ProcessBlock(NULL, &block);
 542     if (!fAccepted)
 543         return "rejected";
 544
 545     return Value::null;
 546 }
 547