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     int64 nTargetSpacingWorkMin = 30;
  22     int64 nTargetSpacingWork = nTargetSpacingWorkMin;
  23     int64 nPoWInterval = 72;
  24     int64 nTargetSpacingStake = 600;
  25
  26     CBlockIndex* pindex = pindexGenesisBlock;
  27     CBlockIndex* pindexPrevWork = pindexGenesisBlock;
  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     double dNetworkMhps = GetDifficulty() * 4294.967296 / nTargetSpacingWork;
  43     int nNetworkWeight = GetDifficulty(GetLastBlockIndex(pindexBest, true)) * 4294967296 / nTargetSpacingStake;
  44
  45     Object obj;
  46     obj.push_back(Pair("blocks",        (int)nBestHeight));
  47     obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
  48     obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
  49     obj.push_back(Pair("difficulty",    (double)GetDifficulty()));
  50     obj.push_back(Pair("blockvalue",    (uint64_t)GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits)));
  51     obj.push_back(Pair("netmhashps",     dNetworkMhps));
  52     obj.push_back(Pair("netstakeweight", (uint64_t) nNetworkWeight));
  53     obj.push_back(Pair("errors",        GetWarnings("statusbar")));
  54     obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
  55     obj.push_back(Pair("stakeweight",    (uint64_t)pwalletMain->GetStakeMintPower(*pwalletMain, STAKE_NORMAL)));
  56     obj.push_back(Pair("minweight",    (uint64_t)pwalletMain->GetStakeMintPower(*pwalletMain, STAKE_MINWEIGHT)));
  57     obj.push_back(Pair("maxweight",    (uint64_t)pwalletMain->GetStakeMintPower(*pwalletMain, STAKE_MAXWEIGHT)));
  58     obj.push_back(Pair("passiveweight",    (uint64_t)pwalletMain->GetStakeMintPower(*pwalletMain, STAKE_BELOWMIN)));
  59     obj.push_back(Pair("stakeinterest",    (uint64_t)GetProofOfStakeReward(0, GetLastBlockIndex(pindexBest, true)->nBits, GetLastBlockIndex(pindexBest, true)->nTime, true)));
  60     obj.push_back(Pair("testnet",       fTestNet));
  61     return obj;
  62 }
  63
  64 Value getworkex(const Array& params, bool fHelp)
  65 {
  66     if (fHelp || params.size() > 2)
  67         throw runtime_error(
  68             "getworkex [data, coinbase]\n"
  69             "If [data, coinbase] is not specified, returns extended work data.\n"
  70         );
  71
  72     if (vNodes.empty())
  73         throw JSONRPCError(-9, "NovaCoin is not connected!");
  74
  75     if (IsInitialBlockDownload())
  76         throw JSONRPCError(-10, "NovaCoin is downloading blocks...");
  77
  78     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
  79     static mapNewBlock_t mapNewBlock;
  80     static vector<CBlock*> vNewBlock;
  81     static CReserveKey reservekey(pwalletMain);
  82
  83     if (params.size() == 0)
  84     {
  85         // Update block
  86         static unsigned int nTransactionsUpdatedLast;
  87         static CBlockIndex* pindexPrev;
  88         static int64 nStart;
  89         static CBlock* pblock;
  90         if (pindexPrev != pindexBest ||
  91             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
  92         {
  93             if (pindexPrev != pindexBest)
  94             {
  95                 // Deallocate old blocks since they're obsolete now
  96                 mapNewBlock.clear();
  97                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
  98                     delete pblock;
  99                 vNewBlock.clear();
 100             }
 101             nTransactionsUpdatedLast = nTransactionsUpdated;
 102             pindexPrev = pindexBest;
 103             nStart = GetTime();
 104
 105             // Create new block
 106             pblock = CreateNewBlock(pwalletMain);
 107             if (!pblock)
 108                 throw JSONRPCError(-7, "Out of memory");
 109             vNewBlock.push_back(pblock);
 110         }
 111
 112         // Update nTime
 113         pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 114         pblock->nNonce = 0;
 115
 116         // Update nExtraNonce
 117         static unsigned int nExtraNonce = 0;
 118         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 119
 120         // Save
 121         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 122
 123         // Prebuild hash buffers
 124         char pmidstate[32];
 125         char pdata[128];
 126         char phash1[64];
 127         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 128
 129         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 130
 131         CTransaction coinbaseTx = pblock->vtx[0];
 132         std::vector<uint256> merkle = pblock->GetMerkleBranch(0);
 133
 134         Object result;
 135         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 136         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 137
 138         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 139         ssTx << coinbaseTx;
 140         result.push_back(Pair("coinbase", HexStr(ssTx.begin(), ssTx.end())));
 141
 142         Array merkle_arr;
 143
 144         BOOST_FOREACH(uint256 merkleh, merkle) {
 145             merkle_arr.push_back(HexStr(BEGIN(merkleh), END(merkleh)));
 146         }
 147
 148         result.push_back(Pair("merkle", merkle_arr));
 149
 150
 151         return result;
 152     }
 153     else
 154     {
 155         // Parse parameters
 156         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 157         vector<unsigned char> coinbase;
 158
 159         if(params.size() == 2)
 160             coinbase = ParseHex(params[1].get_str());
 161
 162         if (vchData.size() != 128)
 163             throw JSONRPCError(-8, "Invalid parameter");
 164
 165         CBlock* pdata = (CBlock*)&vchData[0];
 166
 167         // Byte reverse
 168         for (int i = 0; i < 128/4; i++)
 169             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 170
 171         // Get saved block
 172         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 173             return false;
 174         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 175
 176         pblock->nTime = pdata->nTime;
 177         pblock->nNonce = pdata->nNonce;
 178
 179         if(coinbase.size() == 0)
 180             pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 181         else
 182             CDataStream(coinbase, SER_NETWORK, PROTOCOL_VERSION) >> pblock->vtx[0]; // FIXME - HACK!
 183
 184         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 185
 186         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 187         {
 188             if (!pblock->SignBlock(*pwalletMain))
 189                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 190         }
 191
 192         return CheckWork(pblock, *pwalletMain, reservekey);
 193     }
 194 }
 195
 196
 197 Value getwork(const Array& params, bool fHelp)
 198 {
 199     if (fHelp || params.size() > 1)
 200         throw runtime_error(
 201             "getwork [data]\n"
 202             "If [data] is not specified, returns formatted hash data to work on:\n"
 203             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 204             "  \"data\" : block data\n"
 205             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 206             "  \"target\" : little endian hash target\n"
 207             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 208
 209     if (vNodes.empty())
 210         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 211
 212     if (IsInitialBlockDownload())
 213         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 214
 215     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 216     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 217     static vector<CBlock*> vNewBlock;
 218     static CReserveKey reservekey(pwalletMain);
 219
 220     if (params.size() == 0)
 221     {
 222         // Update block
 223         static unsigned int nTransactionsUpdatedLast;
 224         static CBlockIndex* pindexPrev;
 225         static int64 nStart;
 226         static CBlock* pblock;
 227         if (pindexPrev != pindexBest ||
 228             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 229         {
 230             if (pindexPrev != pindexBest)
 231             {
 232                 // Deallocate old blocks since they're obsolete now
 233                 mapNewBlock.clear();
 234                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 235                     delete pblock;
 236                 vNewBlock.clear();
 237             }
 238
 239             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 240             pindexPrev = NULL;
 241
 242             // Store the pindexBest used before CreateNewBlock, to avoid races
 243             nTransactionsUpdatedLast = nTransactionsUpdated;
 244             CBlockIndex* pindexPrevNew = pindexBest;
 245             nStart = GetTime();
 246
 247             // Create new block
 248             pblock = CreateNewBlock(pwalletMain);
 249             if (!pblock)
 250                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 251             vNewBlock.push_back(pblock);
 252
 253             // Need to update only after we know CreateNewBlock succeeded
 254             pindexPrev = pindexPrevNew;
 255         }
 256
 257         // Update nTime
 258         pblock->UpdateTime(pindexPrev);
 259         pblock->nNonce = 0;
 260
 261         // Update nExtraNonce
 262         static unsigned int nExtraNonce = 0;
 263         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 264
 265         // Save
 266         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 267
 268         // Pre-build hash buffers
 269         char pmidstate[32];
 270         char pdata[128];
 271         char phash1[64];
 272         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 273
 274         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 275
 276         Object result;
 277         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 278         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 279         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 280         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 281         return result;
 282     }
 283     else
 284     {
 285         // Parse parameters
 286         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 287         if (vchData.size() != 128)
 288             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 289         CBlock* pdata = (CBlock*)&vchData[0];
 290
 291         // Byte reverse
 292         for (int i = 0; i < 128/4; i++)
 293             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 294
 295         // Get saved block
 296         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 297             return false;
 298         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 299
 300         pblock->nTime = pdata->nTime;
 301         pblock->nNonce = pdata->nNonce;
 302         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 303         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 304
 305         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 306         {
 307             if (!pblock->SignBlock(*pwalletMain))
 308                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 309         }
 310
 311         return CheckWork(pblock, *pwalletMain, reservekey);
 312     }
 313 }
 314
 315
 316 Value getblocktemplate(const Array& params, bool fHelp)
 317 {
 318     if (fHelp || params.size() > 1)
 319         throw runtime_error(
 320             "getblocktemplate [params]\n"
 321             "Returns data needed to construct a block to work on:\n"
 322             "  \"version\" : block version\n"
 323             "  \"previousblockhash\" : hash of current highest block\n"
 324             "  \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n"
 325             "  \"coinbaseaux\" : data that should be included in coinbase\n"
 326             "  \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n"
 327             "  \"target\" : hash target\n"
 328             "  \"mintime\" : minimum timestamp appropriate for next block\n"
 329             "  \"curtime\" : current timestamp\n"
 330             "  \"mutable\" : list of ways the block template may be changed\n"
 331             "  \"noncerange\" : range of valid nonces\n"
 332             "  \"sigoplimit\" : limit of sigops in blocks\n"
 333             "  \"sizelimit\" : limit of block size\n"
 334             "  \"bits\" : compressed target of next block\n"
 335             "  \"height\" : height of the next block\n"
 336             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 337
 338     std::string strMode = "template";
 339     if (params.size() > 0)
 340     {
 341         const Object& oparam = params[0].get_obj();
 342         const Value& modeval = find_value(oparam, "mode");
 343         if (modeval.type() == str_type)
 344             strMode = modeval.get_str();
 345         else if (modeval.type() == null_type)
 346         {
 347             /* Do nothing */
 348         }
 349         else
 350             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 351     }
 352
 353     if (strMode != "template")
 354         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 355
 356     if (vNodes.empty())
 357         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 358
 359     if (IsInitialBlockDownload())
 360         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 361
 362     static CReserveKey reservekey(pwalletMain);
 363
 364     // Update block
 365     static unsigned int nTransactionsUpdatedLast;
 366     static CBlockIndex* pindexPrev;
 367     static int64 nStart;
 368     static CBlock* pblock;
 369     if (pindexPrev != pindexBest ||
 370         (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5))
 371     {
 372         // Clear pindexPrev so future calls make a new block, despite any failures from here on
 373         pindexPrev = NULL;
 374
 375         // Store the pindexBest used before CreateNewBlock, to avoid races
 376         nTransactionsUpdatedLast = nTransactionsUpdated;
 377         CBlockIndex* pindexPrevNew = pindexBest;
 378         nStart = GetTime();
 379
 380         // Create new block
 381         if(pblock)
 382         {
 383             delete pblock;
 384             pblock = NULL;
 385         }
 386         pblock = CreateNewBlock(pwalletMain);
 387         if (!pblock)
 388             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 389
 390         // Need to update only after we know CreateNewBlock succeeded
 391         pindexPrev = pindexPrevNew;
 392     }
 393
 394     // Update nTime
 395     pblock->UpdateTime(pindexPrev);
 396     pblock->nNonce = 0;
 397
 398     Array transactions;
 399     map<uint256, int64_t> setTxIndex;
 400     int i = 0;
 401     CTxDB txdb("r");
 402     BOOST_FOREACH (CTransaction& tx, pblock->vtx)
 403     {
 404         uint256 txHash = tx.GetHash();
 405         setTxIndex[txHash] = i++;
 406
 407         if (tx.IsCoinBase() || tx.IsCoinStake())
 408             continue;
 409
 410         Object entry;
 411
 412         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 413         ssTx << tx;
 414         entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end())));
 415
 416         entry.push_back(Pair("hash", txHash.GetHex()));
 417
 418         MapPrevTx mapInputs;
 419         map<uint256, CTxIndex> mapUnused;
 420         bool fInvalid = false;
 421         if (tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid))
 422         {
 423             entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(mapInputs) - tx.GetValueOut())));
 424
 425             Array deps;
 426             BOOST_FOREACH (MapPrevTx::value_type& inp, mapInputs)
 427             {
 428                 if (setTxIndex.count(inp.first))
 429                     deps.push_back(setTxIndex[inp.first]);
 430             }
 431             entry.push_back(Pair("depends", deps));
 432
 433             int64_t nSigOps = tx.GetLegacySigOpCount();
 434             nSigOps += tx.GetP2SHSigOpCount(mapInputs);
 435             entry.push_back(Pair("sigops", nSigOps));
 436         }
 437
 438         transactions.push_back(entry);
 439     }
 440
 441     Object aux;
 442     aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
 443
 444     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 445
 446     static Array aMutable;
 447     if (aMutable.empty())
 448     {
 449         aMutable.push_back("time");
 450         aMutable.push_back("transactions");
 451         aMutable.push_back("prevblock");
 452     }
 453
 454     Object result;
 455     result.push_back(Pair("version", pblock->nVersion));
 456     result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
 457     result.push_back(Pair("transactions", transactions));
 458     result.push_back(Pair("coinbaseaux", aux));
 459     result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue));
 460     result.push_back(Pair("target", hashTarget.GetHex()));
 461     result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
 462     result.push_back(Pair("mutable", aMutable));
 463     result.push_back(Pair("noncerange", "00000000ffffffff"));
 464     result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS));
 465     result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE));
 466     result.push_back(Pair("curtime", (int64_t)pblock->nTime));
 467     result.push_back(Pair("bits", HexBits(pblock->nBits)));
 468     result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
 469
 470     return result;
 471 }
 472
 473 Value submitblock(const Array& params, bool fHelp)
 474 {
 475     if (fHelp || params.size() < 1 || params.size() > 2)
 476         throw runtime_error(
 477             "submitblock <hex data> [optional-params-obj]\n"
 478             "[optional-params-obj] parameter is currently ignored.\n"
 479             "Attempts to submit new block to network.\n"
 480             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 481
 482     vector<unsigned char> blockData(ParseHex(params[0].get_str()));
 483     CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
 484     CBlock block;
 485     try {
 486         ssBlock >> block;
 487     }
 488     catch (std::exception &e) {
 489         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 490     }
 491
 492     if (!fTestNet && block.GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 493     {
 494         if (!block.SignBlock(*pwalletMain))
 495             throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 496     }
 497
 498     bool fAccepted = ProcessBlock(NULL, &block);
 499     if (!fAccepted)
 500         return "rejected";
 501
 502     return Value::null;
 503 }
 504