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