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