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