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 "miner.h"
  10 #include "bitcoinrpc.h"
  11
  12 using namespace json_spirit;
  13 using namespace std;
  14
  15 Value getmininginfo(const Array& params, bool fHelp)
  16 {
  17     if (fHelp || params.size() != 0)
  18         throw runtime_error(
  19             "getmininginfo\n"
  20             "Returns an object containing mining-related information.");
  21
  22     double dStakeKernelsTriedAvg = 0;
  23     int nPoWInterval = 72, nPoSInterval = 72, nStakesHandled = 0, nStakesTime = 0;
  24     int64 nTargetSpacingWorkMin = 30, nTargetSpacingWork = 30;
  25
  26     CBlockIndex* pindex = pindexGenesisBlock;
  27     CBlockIndex* pindexPrevWork = pindexGenesisBlock;
  28     CBlockIndex* pindexPrevStake = NULL;
  29
  30     while (pindex)
  31     {
  32         if (pindex->IsProofOfWork())
  33         {
  34             int64 nActualSpacingWork = pindex->GetBlockTime() - pindexPrevWork->GetBlockTime();
  35             nTargetSpacingWork = ((nPoWInterval - 1) * nTargetSpacingWork + nActualSpacingWork + nActualSpacingWork) / (nPoWInterval + 1);
  36             nTargetSpacingWork = max(nTargetSpacingWork, nTargetSpacingWorkMin);
  37             pindexPrevWork = pindex;
  38         }
  39
  40         pindex = pindex->pnext;
  41     }
  42
  43
  44     pindex = pindexBest;
  45
  46     while (pindex && nStakesHandled < nPoSInterval)
  47     {
  48         if (pindex->IsProofOfStake())
  49         {
  50             dStakeKernelsTriedAvg += GetDifficulty(pindex) * 4294967296;
  51             nStakesTime += pindexPrevStake ? (pindexPrevStake->nTime - pindex->nTime) : 0;
  52             pindexPrevStake = pindex;
  53             nStakesHandled++;
  54         }
  55
  56         pindex = pindex->pprev;
  57     }
  58
  59     double dNetworkMhps = GetDifficulty() * 4294.967296 / nTargetSpacingWork;
  60     double dNetworkWeight = dStakeKernelsTriedAvg / nStakesTime;
  61
  62     Object obj;
  63     obj.push_back(Pair("blocks",        (int)nBestHeight));
  64     obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
  65     obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
  66     obj.push_back(Pair("difficulty",    (double)GetDifficulty()));
  67     obj.push_back(Pair("blockvalue",    (uint64_t)GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits)));
  68     obj.push_back(Pair("netmhashps",     dNetworkMhps));
  69     obj.push_back(Pair("netstakeweight", dNetworkWeight));
  70     obj.push_back(Pair("errors",        GetWarnings("statusbar")));
  71     obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
  72     obj.push_back(Pair("stakeweight",    (uint64_t)pwalletMain->GetStakeWeight(*pwalletMain, STAKE_NORMAL)));
  73     obj.push_back(Pair("minweight",    (uint64_t)pwalletMain->GetStakeWeight(*pwalletMain, STAKE_MINWEIGHT)));
  74     obj.push_back(Pair("maxweight",    (uint64_t)pwalletMain->GetStakeWeight(*pwalletMain, STAKE_MAXWEIGHT)));
  75     obj.push_back(Pair("stakeinterest",    (uint64_t)GetProofOfStakeReward(0, GetLastBlockIndex(pindexBest, true)->nBits, GetLastBlockIndex(pindexBest, true)->nTime, true)));
  76     obj.push_back(Pair("testnet",       fTestNet));
  77     return obj;
  78 }
  79
  80 Value getworkex(const Array& params, bool fHelp)
  81 {
  82     if (fHelp || params.size() > 2)
  83         throw runtime_error(
  84             "getworkex [data, coinbase]\n"
  85             "If [data, coinbase] is not specified, returns extended work data.\n"
  86         );
  87
  88     if (vNodes.empty())
  89         throw JSONRPCError(-9, "NovaCoin is not connected!");
  90
  91     if (IsInitialBlockDownload())
  92         throw JSONRPCError(-10, "NovaCoin is downloading blocks...");
  93
  94     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
  95     static mapNewBlock_t mapNewBlock;
  96     static vector<CBlock*> vNewBlock;
  97     static CReserveKey reservekey(pwalletMain);
  98
  99     if (params.size() == 0)
 100     {
 101         // Update block
 102         static unsigned int nTransactionsUpdatedLast;
 103         static CBlockIndex* pindexPrev;
 104         static int64 nStart;
 105         static CBlock* pblock;
 106         if (pindexPrev != pindexBest ||
 107             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 108         {
 109             if (pindexPrev != pindexBest)
 110             {
 111                 // Deallocate old blocks since they're obsolete now
 112                 mapNewBlock.clear();
 113                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 114                     delete pblock;
 115                 vNewBlock.clear();
 116             }
 117             nTransactionsUpdatedLast = nTransactionsUpdated;
 118             pindexPrev = pindexBest;
 119             nStart = GetTime();
 120
 121             // Create new block
 122             pblock = CreateNewBlock(pwalletMain);
 123             if (!pblock)
 124                 throw JSONRPCError(-7, "Out of memory");
 125             vNewBlock.push_back(pblock);
 126         }
 127
 128         // Update nTime
 129         pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 130         pblock->nNonce = 0;
 131
 132         // Update nExtraNonce
 133         static unsigned int nExtraNonce = 0;
 134         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 135
 136         // Save
 137         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 138
 139         // Prebuild hash buffers
 140         char pmidstate[32];
 141         char pdata[128];
 142         char phash1[64];
 143         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 144
 145         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 146
 147         CTransaction coinbaseTx = pblock->vtx[0];
 148         std::vector<uint256> merkle = pblock->GetMerkleBranch(0);
 149
 150         Object result;
 151         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 152         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 153
 154         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 155         ssTx << coinbaseTx;
 156         result.push_back(Pair("coinbase", HexStr(ssTx.begin(), ssTx.end())));
 157
 158         Array merkle_arr;
 159
 160         BOOST_FOREACH(uint256 merkleh, merkle) {
 161             merkle_arr.push_back(HexStr(BEGIN(merkleh), END(merkleh)));
 162         }
 163
 164         result.push_back(Pair("merkle", merkle_arr));
 165
 166
 167         return result;
 168     }
 169     else
 170     {
 171         // Parse parameters
 172         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 173         vector<unsigned char> coinbase;
 174
 175         if(params.size() == 2)
 176             coinbase = ParseHex(params[1].get_str());
 177
 178         if (vchData.size() != 128)
 179             throw JSONRPCError(-8, "Invalid parameter");
 180
 181         CBlock* pdata = (CBlock*)&vchData[0];
 182
 183         // Byte reverse
 184         for (int i = 0; i < 128/4; i++)
 185             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 186
 187         // Get saved block
 188         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 189             return false;
 190         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 191
 192         pblock->nTime = pdata->nTime;
 193         pblock->nNonce = pdata->nNonce;
 194
 195         if(coinbase.size() == 0)
 196             pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 197         else
 198             CDataStream(coinbase, SER_NETWORK, PROTOCOL_VERSION) >> pblock->vtx[0]; // FIXME - HACK!
 199
 200         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 201
 202         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 203         {
 204             if (!pblock->SignBlock(*pwalletMain))
 205                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 206         }
 207
 208         return CheckWork(pblock, *pwalletMain, reservekey);
 209     }
 210 }
 211
 212
 213 Value getwork(const Array& params, bool fHelp)
 214 {
 215     if (fHelp || params.size() > 1)
 216         throw runtime_error(
 217             "getwork [data]\n"
 218             "If [data] is not specified, returns formatted hash data to work on:\n"
 219             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 220             "  \"data\" : block data\n"
 221             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 222             "  \"target\" : little endian hash target\n"
 223             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 224
 225     if (vNodes.empty())
 226         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 227
 228     if (IsInitialBlockDownload())
 229         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 230
 231     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 232     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 233     static vector<CBlock*> vNewBlock;
 234     static CReserveKey reservekey(pwalletMain);
 235
 236     if (params.size() == 0)
 237     {
 238         // Update block
 239         static unsigned int nTransactionsUpdatedLast;
 240         static CBlockIndex* pindexPrev;
 241         static int64 nStart;
 242         static CBlock* pblock;
 243         if (pindexPrev != pindexBest ||
 244             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 245         {
 246             if (pindexPrev != pindexBest)
 247             {
 248                 // Deallocate old blocks since they're obsolete now
 249                 mapNewBlock.clear();
 250                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 251                     delete pblock;
 252                 vNewBlock.clear();
 253             }
 254
 255             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 256             pindexPrev = NULL;
 257
 258             // Store the pindexBest used before CreateNewBlock, to avoid races
 259             nTransactionsUpdatedLast = nTransactionsUpdated;
 260             CBlockIndex* pindexPrevNew = pindexBest;
 261             nStart = GetTime();
 262
 263             // Create new block
 264             pblock = CreateNewBlock(pwalletMain);
 265             if (!pblock)
 266                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 267             vNewBlock.push_back(pblock);
 268
 269             // Need to update only after we know CreateNewBlock succeeded
 270             pindexPrev = pindexPrevNew;
 271         }
 272
 273         // Update nTime
 274         pblock->UpdateTime(pindexPrev);
 275         pblock->nNonce = 0;
 276
 277         // Update nExtraNonce
 278         static unsigned int nExtraNonce = 0;
 279         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 280
 281         // Save
 282         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 283
 284         // Pre-build hash buffers
 285         char pmidstate[32];
 286         char pdata[128];
 287         char phash1[64];
 288         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 289
 290         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 291
 292         Object result;
 293         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 294         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 295         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 296         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 297         return result;
 298     }
 299     else
 300     {
 301         // Parse parameters
 302         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 303         if (vchData.size() != 128)
 304             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 305         CBlock* pdata = (CBlock*)&vchData[0];
 306
 307         // Byte reverse
 308         for (int i = 0; i < 128/4; i++)
 309             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 310
 311         // Get saved block
 312         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 313             return false;
 314         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 315
 316         pblock->nTime = pdata->nTime;
 317         pblock->nNonce = pdata->nNonce;
 318         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 319         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 320
 321         if (!fTestNet && pblock->GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 322         {
 323             if (!pblock->SignBlock(*pwalletMain))
 324                 throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 325         }
 326
 327         return CheckWork(pblock, *pwalletMain, reservekey);
 328     }
 329 }
 330
 331
 332 Value getblocktemplate(const Array& params, bool fHelp)
 333 {
 334     if (fHelp || params.size() > 1)
 335         throw runtime_error(
 336             "getblocktemplate [params]\n"
 337             "Returns data needed to construct a block to work on:\n"
 338             "  \"version\" : block version\n"
 339             "  \"previousblockhash\" : hash of current highest block\n"
 340             "  \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n"
 341             "  \"coinbaseaux\" : data that should be included in coinbase\n"
 342             "  \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n"
 343             "  \"target\" : hash target\n"
 344             "  \"mintime\" : minimum timestamp appropriate for next block\n"
 345             "  \"curtime\" : current timestamp\n"
 346             "  \"mutable\" : list of ways the block template may be changed\n"
 347             "  \"noncerange\" : range of valid nonces\n"
 348             "  \"sigoplimit\" : limit of sigops in blocks\n"
 349             "  \"sizelimit\" : limit of block size\n"
 350             "  \"bits\" : compressed target of next block\n"
 351             "  \"height\" : height of the next block\n"
 352             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 353
 354     std::string strMode = "template";
 355     if (params.size() > 0)
 356     {
 357         const Object& oparam = params[0].get_obj();
 358         const Value& modeval = find_value(oparam, "mode");
 359         if (modeval.type() == str_type)
 360             strMode = modeval.get_str();
 361         else if (modeval.type() == null_type)
 362         {
 363             /* Do nothing */
 364         }
 365         else
 366             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 367     }
 368
 369     if (strMode != "template")
 370         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 371
 372     if (vNodes.empty())
 373         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 374
 375     if (IsInitialBlockDownload())
 376         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 377
 378     static CReserveKey reservekey(pwalletMain);
 379
 380     // Update block
 381     static unsigned int nTransactionsUpdatedLast;
 382     static CBlockIndex* pindexPrev;
 383     static int64 nStart;
 384     static CBlock* pblock;
 385     if (pindexPrev != pindexBest ||
 386         (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5))
 387     {
 388         // Clear pindexPrev so future calls make a new block, despite any failures from here on
 389         pindexPrev = NULL;
 390
 391         // Store the pindexBest used before CreateNewBlock, to avoid races
 392         nTransactionsUpdatedLast = nTransactionsUpdated;
 393         CBlockIndex* pindexPrevNew = pindexBest;
 394         nStart = GetTime();
 395
 396         // Create new block
 397         if(pblock)
 398         {
 399             delete pblock;
 400             pblock = NULL;
 401         }
 402         pblock = CreateNewBlock(pwalletMain);
 403         if (!pblock)
 404             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 405
 406         // Need to update only after we know CreateNewBlock succeeded
 407         pindexPrev = pindexPrevNew;
 408     }
 409
 410     // Update nTime
 411     pblock->UpdateTime(pindexPrev);
 412     pblock->nNonce = 0;
 413
 414     Array transactions;
 415     map<uint256, int64_t> setTxIndex;
 416     int i = 0;
 417     CTxDB txdb("r");
 418     BOOST_FOREACH (CTransaction& tx, pblock->vtx)
 419     {
 420         uint256 txHash = tx.GetHash();
 421         setTxIndex[txHash] = i++;
 422
 423         if (tx.IsCoinBase() || tx.IsCoinStake())
 424             continue;
 425
 426         Object entry;
 427
 428         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 429         ssTx << tx;
 430         entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end())));
 431
 432         entry.push_back(Pair("hash", txHash.GetHex()));
 433
 434         MapPrevTx mapInputs;
 435         map<uint256, CTxIndex> mapUnused;
 436         bool fInvalid = false;
 437         if (tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid))
 438         {
 439             entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(mapInputs) - tx.GetValueOut())));
 440
 441             Array deps;
 442             BOOST_FOREACH (MapPrevTx::value_type& inp, mapInputs)
 443             {
 444                 if (setTxIndex.count(inp.first))
 445                     deps.push_back(setTxIndex[inp.first]);
 446             }
 447             entry.push_back(Pair("depends", deps));
 448
 449             int64_t nSigOps = tx.GetLegacySigOpCount();
 450             nSigOps += tx.GetP2SHSigOpCount(mapInputs);
 451             entry.push_back(Pair("sigops", nSigOps));
 452         }
 453
 454         transactions.push_back(entry);
 455     }
 456
 457     Object aux;
 458     aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
 459
 460     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 461
 462     static Array aMutable;
 463     if (aMutable.empty())
 464     {
 465         aMutable.push_back("time");
 466         aMutable.push_back("transactions");
 467         aMutable.push_back("prevblock");
 468     }
 469
 470     Object result;
 471     result.push_back(Pair("version", pblock->nVersion));
 472     result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
 473     result.push_back(Pair("transactions", transactions));
 474     result.push_back(Pair("coinbaseaux", aux));
 475     result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue));
 476     result.push_back(Pair("target", hashTarget.GetHex()));
 477     result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
 478     result.push_back(Pair("mutable", aMutable));
 479     result.push_back(Pair("noncerange", "00000000ffffffff"));
 480     result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS));
 481     result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE));
 482     result.push_back(Pair("curtime", (int64_t)pblock->nTime));
 483     result.push_back(Pair("bits", HexBits(pblock->nBits)));
 484     result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
 485
 486     return result;
 487 }
 488
 489 Value submitblock(const Array& params, bool fHelp)
 490 {
 491     if (fHelp || params.size() < 1 || params.size() > 2)
 492         throw runtime_error(
 493             "submitblock <hex data> [optional-params-obj]\n"
 494             "[optional-params-obj] parameter is currently ignored.\n"
 495             "Attempts to submit new block to network.\n"
 496             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 497
 498     vector<unsigned char> blockData(ParseHex(params[0].get_str()));
 499     CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
 500     CBlock block;
 501     try {
 502         ssBlock >> block;
 503     }
 504     catch (std::exception &e) {
 505         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 506     }
 507
 508     if (!fTestNet && block.GetBlockTime() < CHAINCHECKS_SWITCH_TIME)
 509     {
 510         if (!block.SignBlock(*pwalletMain))
 511             throw JSONRPCError(-100, "Unable to sign block, wallet locked?");
 512     }
 513
 514     bool fAccepted = ProcessBlock(NULL, &block);
 515     if (!fAccepted)
 516         return "rejected";
 517
 518     return Value::null;
 519 }
 520