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