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