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