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 getsubsidy(const Array& params, bool fHelp)
  16 {
  17     if (fHelp || params.size() > 1)
  18         throw runtime_error(
  19             "getsubsidy [nTarget]\n"
  20             "Returns proof-of-work subsidy value for the specified value of target.");
  21
  22     unsigned int nBits = 0;
  23
  24     if (params.size() != 0)
  25     {
  26         CBigNum bnTarget(uint256(params[0].get_str()));
  27         nBits = bnTarget.GetCompact();
  28     }
  29     else
  30     {
  31         nBits = GetNextTargetRequired(pindexBest, false);
  32     }
  33
  34     return (uint64_t)GetProofOfWorkReward(nBits);
  35 }
  36
  37 Value getmininginfo(const Array& params, bool fHelp)
  38 {
  39     if (fHelp || params.size() != 0)
  40         throw runtime_error(
  41             "getmininginfo\n"
  42             "Returns an object containing mining-related information.");
  43
  44     uint64 nMinWeight = 0, nMaxWeight = 0, nWeight = 0;
  45     pwalletMain->GetStakeWeight(*pwalletMain, nMinWeight, nMaxWeight, nWeight);
  46
  47     Object obj, diff, weight;
  48     obj.push_back(Pair("blocks",        (int)nBestHeight));
  49     obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
  50     obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
  51
  52     diff.push_back(Pair("proof-of-work",        GetDifficulty()));
  53     diff.push_back(Pair("proof-of-stake",       GetDifficulty(GetLastBlockIndex(pindexBest, true))));
  54     diff.push_back(Pair("search-interval",      (int)nLastCoinStakeSearchInterval));
  55     obj.push_back(Pair("difficulty",    diff));
  56
  57     obj.push_back(Pair("blockvalue",    (uint64_t)GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits)));
  58     obj.push_back(Pair("netmhashps",     GetPoWMHashPS()));
  59     obj.push_back(Pair("netstakeweight", GetPoSKernelPS()));
  60     obj.push_back(Pair("errors",        GetWarnings("statusbar")));
  61     obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
  62
  63     weight.push_back(Pair("minimum",    (uint64_t)nMinWeight));
  64     weight.push_back(Pair("maximum",    (uint64_t)nMaxWeight));
  65     weight.push_back(Pair("combined",  (uint64_t)nWeight));
  66     obj.push_back(Pair("stakeweight", weight));
  67
  68     obj.push_back(Pair("stakeinterest",    (uint64_t)GetProofOfStakeReward(0, GetLastBlockIndex(pindexBest, true)->nBits, GetLastBlockIndex(pindexBest, true)->nTime, true)));
  69     obj.push_back(Pair("testnet",       fTestNet));
  70     return obj;
  71 }
  72
  73 Value getworkex(const Array& params, bool fHelp)
  74 {
  75     if (fHelp || params.size() > 2)
  76         throw runtime_error(
  77             "getworkex [data, coinbase]\n"
  78             "If [data, coinbase] is not specified, returns extended work data.\n"
  79         );
  80
  81     if (vNodes.empty())
  82         throw JSONRPCError(-9, "NovaCoin is not connected!");
  83
  84     if (IsInitialBlockDownload())
  85         throw JSONRPCError(-10, "NovaCoin is downloading blocks...");
  86
  87     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
  88     static mapNewBlock_t mapNewBlock;
  89     static vector<CBlock*> vNewBlock;
  90     static CReserveKey reservekey(pwalletMain);
  91
  92     if (params.size() == 0)
  93     {
  94         // Update block
  95         static unsigned int nTransactionsUpdatedLast;
  96         static CBlockIndex* pindexPrev;
  97         static int64 nStart;
  98         static CBlock* pblock;
  99         if (pindexPrev != pindexBest ||
 100             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 101         {
 102             if (pindexPrev != pindexBest)
 103             {
 104                 // Deallocate old blocks since they're obsolete now
 105                 mapNewBlock.clear();
 106                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 107                     delete pblock;
 108                 vNewBlock.clear();
 109             }
 110             nTransactionsUpdatedLast = nTransactionsUpdated;
 111             pindexPrev = pindexBest;
 112             nStart = GetTime();
 113
 114             // Create new block
 115             pblock = CreateNewBlock(pwalletMain);
 116             if (!pblock)
 117                 throw JSONRPCError(-7, "Out of memory");
 118             vNewBlock.push_back(pblock);
 119         }
 120
 121         // Update nTime
 122         pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 123         pblock->nNonce = 0;
 124
 125         // Update nExtraNonce
 126         static unsigned int nExtraNonce = 0;
 127         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 128
 129         // Save
 130         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 131
 132         // Prebuild hash buffers
 133         char pmidstate[32];
 134         char pdata[128];
 135         char phash1[64];
 136         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 137
 138         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 139
 140         CTransaction coinbaseTx = pblock->vtx[0];
 141         std::vector<uint256> merkle = pblock->GetMerkleBranch(0);
 142
 143         Object result;
 144         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 145         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 146
 147         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 148         ssTx << coinbaseTx;
 149         result.push_back(Pair("coinbase", HexStr(ssTx.begin(), ssTx.end())));
 150
 151         Array merkle_arr;
 152
 153         BOOST_FOREACH(uint256 merkleh, merkle) {
 154             merkle_arr.push_back(HexStr(BEGIN(merkleh), END(merkleh)));
 155         }
 156
 157         result.push_back(Pair("merkle", merkle_arr));
 158
 159
 160         return result;
 161     }
 162     else
 163     {
 164         // Parse parameters
 165         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 166         vector<unsigned char> coinbase;
 167
 168         if(params.size() == 2)
 169             coinbase = ParseHex(params[1].get_str());
 170
 171         if (vchData.size() != 128)
 172             throw JSONRPCError(-8, "Invalid parameter");
 173
 174         CBlock* pdata = (CBlock*)&vchData[0];
 175
 176         // Byte reverse
 177         for (int i = 0; i < 128/4; i++)
 178             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 179
 180         // Get saved block
 181         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 182             return false;
 183         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 184
 185         pblock->nTime = pdata->nTime;
 186         pblock->nNonce = pdata->nNonce;
 187
 188         if(coinbase.size() == 0)
 189             pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 190         else
 191             CDataStream(coinbase, SER_NETWORK, PROTOCOL_VERSION) >> pblock->vtx[0]; // FIXME - HACK!
 192
 193         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 194
 195         return CheckWork(pblock, *pwalletMain, reservekey);
 196     }
 197 }
 198
 199
 200 Value getwork(const Array& params, bool fHelp)
 201 {
 202     if (fHelp || params.size() > 1)
 203         throw runtime_error(
 204             "getwork [data]\n"
 205             "If [data] is not specified, returns formatted hash data to work on:\n"
 206             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 207             "  \"data\" : block data\n"
 208             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 209             "  \"target\" : little endian hash target\n"
 210             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 211
 212     if (vNodes.empty())
 213         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 214
 215     if (IsInitialBlockDownload())
 216         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 217
 218     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 219     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 220     static vector<CBlock*> vNewBlock;
 221     static CReserveKey reservekey(pwalletMain);
 222
 223     if (params.size() == 0)
 224     {
 225         // Update block
 226         static unsigned int nTransactionsUpdatedLast;
 227         static CBlockIndex* pindexPrev;
 228         static int64 nStart;
 229         static CBlock* pblock;
 230         if (pindexPrev != pindexBest ||
 231             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 232         {
 233             if (pindexPrev != pindexBest)
 234             {
 235                 // Deallocate old blocks since they're obsolete now
 236                 mapNewBlock.clear();
 237                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 238                     delete pblock;
 239                 vNewBlock.clear();
 240             }
 241
 242             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 243             pindexPrev = NULL;
 244
 245             // Store the pindexBest used before CreateNewBlock, to avoid races
 246             nTransactionsUpdatedLast = nTransactionsUpdated;
 247             CBlockIndex* pindexPrevNew = pindexBest;
 248             nStart = GetTime();
 249
 250             // Create new block
 251             pblock = CreateNewBlock(pwalletMain);
 252             if (!pblock)
 253                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 254             vNewBlock.push_back(pblock);
 255
 256             // Need to update only after we know CreateNewBlock succeeded
 257             pindexPrev = pindexPrevNew;
 258         }
 259
 260         // Update nTime
 261         pblock->UpdateTime(pindexPrev);
 262         pblock->nNonce = 0;
 263
 264         // Update nExtraNonce
 265         static unsigned int nExtraNonce = 0;
 266         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 267
 268         // Save
 269         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 270
 271         // Pre-build hash buffers
 272         char pmidstate[32];
 273         char pdata[128];
 274         char phash1[64];
 275         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 276
 277         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 278
 279         Object result;
 280         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 281         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 282         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 283         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 284         return result;
 285     }
 286     else
 287     {
 288         // Parse parameters
 289         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 290         if (vchData.size() != 128)
 291             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 292         CBlock* pdata = (CBlock*)&vchData[0];
 293
 294         // Byte reverse
 295         for (int i = 0; i < 128/4; i++)
 296             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 297
 298         // Get saved block
 299         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 300             return false;
 301         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 302
 303         pblock->nTime = pdata->nTime;
 304         pblock->nNonce = pdata->nNonce;
 305         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 306         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 307
 308         return CheckWork(pblock, *pwalletMain, reservekey);
 309     }
 310 }
 311
 312 Value getblocktemplate(const Array& params, bool fHelp)
 313 {
 314     if (fHelp || params.size() != 1)
 315         throw runtime_error(
 316             "getblocktemplate [params]\n"
 317             "Returns data needed to construct a block to work on:\n"
 318             "  \"version\" : block version\n"
 319             "  \"previousblockhash\" : hash of current highest block\n"
 320             "  \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n"
 321             "  \"coinbaseaux\" : data that should be included in coinbase\n"
 322             "  \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n"
 323             "  \"target\" : hash target\n"
 324             "  \"mintime\" : minimum timestamp appropriate for next block\n"
 325             "  \"curtime\" : current timestamp\n"
 326             "  \"mutable\" : list of ways the block template may be changed\n"
 327             "  \"noncerange\" : range of valid nonces\n"
 328             "  \"sigoplimit\" : limit of sigops in blocks\n"
 329             "  \"sizelimit\" : limit of block size\n"
 330             "  \"bits\" : compressed target of next block\n"
 331             "  \"height\" : height of the next block\n"
 332             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 333
 334     std::string strMode = "template";
 335     if (params.size() > 0)
 336     {
 337         const Object& oparam = params[0].get_obj();
 338         const Value& modeval = find_value(oparam, "mode");
 339         if (modeval.type() == str_type)
 340             strMode = modeval.get_str();
 341         else if (modeval.type() == null_type)
 342         {
 343             /* Do nothing */
 344         }
 345         else
 346             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 347     }
 348
 349     if (strMode != "template")
 350         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 351
 352     if (vNodes.empty())
 353         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "Bitcoin is not connected!");
 354
 355     if (IsInitialBlockDownload())
 356         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "Bitcoin is downloading blocks...");
 357
 358     static CReserveKey reservekey(pwalletMain);
 359
 360     // Update block
 361     static unsigned int nTransactionsUpdatedLast;
 362     static CBlockIndex* pindexPrev;
 363     static int64 nStart;
 364     static CBlock* pblock;
 365     if (pindexPrev != pindexBest ||
 366         (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5))
 367     {
 368         // Clear pindexPrev so future calls make a new block, despite any failures from here on
 369         pindexPrev = NULL;
 370
 371         // Store the pindexBest used before CreateNewBlock, to avoid races
 372         nTransactionsUpdatedLast = nTransactionsUpdated;
 373         CBlockIndex* pindexPrevNew = pindexBest;
 374         nStart = GetTime();
 375
 376         // Create new block
 377         if(pblock)
 378         {
 379             delete pblock;
 380             pblock = NULL;
 381         }
 382         pblock = CreateNewBlock(pwalletMain);
 383         if (!pblock)
 384             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 385
 386         // Need to update only after we know CreateNewBlock succeeded
 387         pindexPrev = pindexPrevNew;
 388     }
 389
 390     // Update nTime
 391     pblock->UpdateTime(pindexPrev);
 392     pblock->nNonce = 0;
 393
 394     Array transactions;
 395     map<uint256, int64_t> setTxIndex;
 396     int i = 0;
 397     CCoinsViewCache &view = *pcoinsTip;
 398     BOOST_FOREACH (CTransaction& tx, pblock->vtx)
 399     {
 400         uint256 txHash = tx.GetHash();
 401         setTxIndex[txHash] = i++;
 402
 403         if (tx.IsCoinBase() || tx.IsCoinStake())
 404             continue;
 405
 406         Object entry;
 407
 408         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 409         ssTx << tx;
 410         entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end())));
 411
 412         entry.push_back(Pair("hash", txHash.GetHex()));
 413
 414         Array deps;
 415         BOOST_FOREACH (const CTxIn &in, tx.vin)
 416         {
 417             if (setTxIndex.count(in.prevout.hash))
 418                 deps.push_back(setTxIndex[in.prevout.hash]);
 419         }
 420         entry.push_back(Pair("depends", deps));
 421
 422         int64_t nSigOps = tx.GetLegacySigOpCount();
 423         if (tx.HaveInputs(view))
 424         {
 425             entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(view) - tx.GetValueOut())));
 426             nSigOps += tx.GetP2SHSigOpCount(view);
 427         }
 428         entry.push_back(Pair("sigops", nSigOps));
 429
 430         transactions.push_back(entry);
 431     }
 432
 433     Object aux;
 434     aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
 435
 436     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 437
 438     static Array aMutable;
 439     if (aMutable.empty())
 440     {
 441         aMutable.push_back("time");
 442         aMutable.push_back("transactions");
 443         aMutable.push_back("prevblock");
 444     }
 445
 446     Object result;
 447     result.push_back(Pair("version", pblock->nVersion));
 448     result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
 449     result.push_back(Pair("transactions", transactions));
 450     result.push_back(Pair("coinbaseaux", aux));
 451     result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue));
 452     result.push_back(Pair("target", hashTarget.GetHex()));
 453     result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
 454     result.push_back(Pair("mutable", aMutable));
 455     result.push_back(Pair("noncerange", "00000000ffffffff"));
 456     result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS));
 457     result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE));
 458     result.push_back(Pair("curtime", (int64_t)pblock->nTime));
 459     result.push_back(Pair("bits", HexBits(pblock->nBits)));
 460     result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
 461
 462     return result;
 463 }
 464
 465 Value submitblock(const Array& params, bool fHelp)
 466 {
 467     if (fHelp || params.size() < 1 || params.size() > 2)
 468         throw runtime_error(
 469             "submitblock <hex data> [optional-params-obj]\n"
 470             "[optional-params-obj] parameter is currently ignored.\n"
 471             "Attempts to submit new block to network.\n"
 472             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 473
 474     vector<unsigned char> blockData(ParseHex(params[0].get_str()));
 475     CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
 476     CBlock pblock;
 477     try {
 478         ssBlock >> pblock;
 479     }
 480     catch (std::exception &e) {
 481         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 482     }
 483
 484     bool fAccepted = ProcessBlock(NULL, &pblock);
 485     if (!fAccepted)
 486         return "rejected";
 487
 488     return Value::null;
 489 }