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 "kernel.h"
  12 #include "bitcoinrpc.h"
  13
  14 #include <boost/format.hpp>
  15 #include <boost/assign/list_of.hpp>
  16 #include <boost/iterator/counting_iterator.hpp>
  17
  18 using namespace json_spirit;
  19 using namespace std;
  20
  21 extern uint256 nPoWBase;
  22 extern uint64_t nStakeInputsMapSize;
  23
  24 Value getsubsidy(const Array& params, bool fHelp)
  25 {
  26     if (fHelp || params.size() > 1)
  27         throw runtime_error(
  28             "getsubsidy [nTarget]\n"
  29             "Returns proof-of-work subsidy value for the specified value of target.");
  30
  31     unsigned int nBits = 0;
  32
  33     if (params.size() != 0)
  34     {
  35         CBigNum bnTarget(uint256(params[0].get_str()));
  36         nBits = bnTarget.GetCompact();
  37     }
  38     else
  39     {
  40         nBits = GetNextTargetRequired(pindexBest, false);
  41     }
  42
  43     return (uint64_t)GetProofOfWorkReward(nBits);
  44 }
  45
  46 Value getmininginfo(const Array& params, bool fHelp)
  47 {
  48     if (fHelp || params.size() != 0)
  49         throw runtime_error(
  50             "getmininginfo\n"
  51             "Returns an object containing mining-related information.");
  52
  53     Object obj, diff;
  54     obj.push_back(Pair("blocks",        (int)nBestHeight));
  55     obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
  56     obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
  57
  58     diff.push_back(Pair("proof-of-work",        GetDifficulty()));
  59     diff.push_back(Pair("proof-of-stake",       GetDifficulty(GetLastBlockIndex(pindexBest, true))));
  60     diff.push_back(Pair("search-interval",      (int)nLastCoinStakeSearchInterval));
  61     obj.push_back(Pair("difficulty",    diff));
  62
  63     obj.push_back(Pair("blockvalue",    (uint64_t)GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits)));
  64     obj.push_back(Pair("netmhashps",    GetPoWMHashPS()));
  65     obj.push_back(Pair("netstakeweight",GetPoSKernelPS()));
  66     obj.push_back(Pair("errors",        GetWarnings("statusbar")));
  67     obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
  68
  69     obj.push_back(Pair("stakeinputs",   (uint64_t)nStakeInputsMapSize));
  70     obj.push_back(Pair("stakeinterest", GetProofOfStakeReward(0, GetLastBlockIndex(pindexBest, true)->nBits, GetLastBlockIndex(pindexBest, true)->nTime, true)));
  71
  72     obj.push_back(Pair("testnet",       fTestNet));
  73     return obj;
  74 }
  75
  76 // scaninput '{"txid":"95d640426fe66de866a8cf2d0601d2c8cf3ec598109b4d4ffa7fd03dad6d35ce","difficulty":0.01, "days":10}'
  77 Value scaninput(const Array& params, bool fHelp)
  78 {
  79     if (fHelp || params.size() != 1)
  80         throw runtime_error(
  81             "scaninput '{\"txid\":\"txid\", \"vout\":[vout1, vout2, ..., voutN], \"difficulty\":difficulty, \"days\":days}'\n"
  82             "Scan specified transaction or input for suitable kernel solutions.\n"
  83             "    difficulty - upper limit for difficulty, current difficulty by default;\n"
  84             "    days - time window, 90 days by default.\n"
  85         );
  86
  87     RPCTypeCheck(params, boost::assign::list_of(obj_type));
  88
  89     Object scanParams = params[0].get_obj();
  90
  91     const Value& txid_v = find_value(scanParams, "txid");
  92     if (txid_v.type() != str_type)
  93         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, missing txid key");
  94
  95     string txid = txid_v.get_str();
  96     if (!IsHex(txid))
  97         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, expected hex txid");
  98
  99     uint256 hash(txid);
 100     int32_t nDays = 90;
 101     uint32_t nBits = GetNextTargetRequired(pindexBest, true);
 102
 103     const Value& diff_v = find_value(scanParams, "difficulty");
 104     if (diff_v.type() == real_type || diff_v.type() == int_type)
 105     {
 106         double dDiff = diff_v.get_real();
 107         if (dDiff <= 0)
 108             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, diff must be greater than zero");
 109
 110         CBigNum bnTarget(nPoWBase);
 111         bnTarget *= 1000;
 112         bnTarget /= (int) (dDiff * 1000);
 113         nBits = bnTarget.GetCompact();
 114     }
 115
 116     const Value& days_v = find_value(scanParams, "days");
 117     if (days_v.type() == int_type)
 118     {
 119         nDays = days_v.get_int();
 120         if (nDays <= 0)
 121             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, interval length must be greater than zero");
 122     }
 123
 124
 125     CTransaction tx;
 126     uint256 hashBlock = 0;
 127     if (GetTransaction(hash, tx, hashBlock))
 128     {
 129         if (hashBlock == 0)
 130             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Unable to find transaction in the blockchain");
 131
 132         vector<int> vInputs(0);
 133         const Value& inputs_v = find_value(scanParams, "vout");
 134         if (inputs_v.type() == array_type)
 135         {
 136             Array inputs = inputs_v.get_array();
 137             BOOST_FOREACH(const Value &v_out, inputs)
 138             {
 139                 int nOut = v_out.get_int();
 140                 if (nOut < 0 || nOut > (int)tx.vout.size() - 1)
 141                 {
 142                     stringstream strErrorMsg;
 143                     strErrorMsg << boost::format("Invalid parameter, input number %d is out of range") % nOut;
 144                     throw JSONRPCError(RPC_INVALID_PARAMETER, strErrorMsg.str());
 145                 }
 146
 147                 vInputs.push_back(nOut);
 148             }
 149         }
 150         else if(inputs_v.type() == int_type)
 151         {
 152             int nOut = inputs_v.get_int();
 153             if (nOut < 0 || nOut > (int)tx.vout.size() - 1)
 154             {
 155                 stringstream strErrorMsg;
 156                 strErrorMsg << boost::format("Invalid parameter, input number %d is out of range") % nOut;
 157                 throw JSONRPCError(RPC_INVALID_PARAMETER, strErrorMsg.str());
 158             }
 159
 160             vInputs.push_back(nOut);
 161         }
 162         else
 163         {
 164             vInputs = vector<int>(boost::counting_iterator<int>( 0 ), boost::counting_iterator<int>( tx.vout.size() ));
 165         }
 166
 167         CTxDB txdb("r");
 168
 169         CBlock block;
 170         CTxIndex txindex;
 171
 172         // Load transaction index item
 173         if (!txdb.ReadTxIndex(tx.GetHash(), txindex))
 174             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Unable to read block index item");
 175
 176         // Read block header
 177         if (!block.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos, false))
 178             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "CBlock::ReadFromDisk() failed");
 179
 180         uint64_t nStakeModifier = 0;
 181         if (!GetKernelStakeModifier(block.GetHash(), nStakeModifier))
 182             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "No kernel stake modifier generated yet");
 183
 184         std::pair<uint32_t, uint32_t> interval;
 185         interval.first = GetTime();
 186         // Only count coins meeting min age requirement
 187         if (nStakeMinAge + block.nTime > interval.first)
 188             interval.first += (nStakeMinAge + block.nTime - interval.first);
 189         interval.second = interval.first + nDays * nOneDay;
 190
 191         Array results;
 192         BOOST_FOREACH(const int &nOut, vInputs)
 193         {
 194             // Check for spent flag
 195             // It doesn't make sense to scan spent inputs.
 196             if (!txindex.vSpent[nOut].IsNull())
 197                 continue;
 198
 199             // Skip zero value outputs
 200             if (tx.vout[nOut].nValue == 0)
 201                 continue;
 202
 203             // Build static part of kernel
 204             CDataStream ssKernel(SER_GETHASH, 0);
 205             ssKernel << nStakeModifier;
 206             ssKernel << block.nTime << (txindex.pos.nTxPos - txindex.pos.nBlockPos) << tx.nTime << nOut;
 207             CDataStream::const_iterator itK = ssKernel.begin();
 208
 209             std::vector<std::pair<uint256, uint32_t> > result;
 210             if (ScanKernelForward((unsigned char *)&itK[0], nBits, tx.nTime, tx.vout[nOut].nValue, interval, result))
 211             {
 212                 BOOST_FOREACH(const PAIRTYPE(uint256, uint32_t) solution, result)
 213                 {
 214                     Object item;
 215                     item.push_back(Pair("nout", nOut));
 216                     item.push_back(Pair("hash", solution.first.GetHex()));
 217                     item.push_back(Pair("time", DateTimeStrFormat(solution.second)));
 218
 219                     results.push_back(item);
 220                 }
 221             }
 222         }
 223
 224         if (results.size() == 0)
 225             return false;
 226
 227         return results;
 228     }
 229     else
 230         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "No information available about transaction");
 231 }
 232
 233 Value getworkex(const Array& params, bool fHelp)
 234 {
 235     if (fHelp || params.size() > 2)
 236         throw runtime_error(
 237             "getworkex [data, coinbase]\n"
 238             "If [data, coinbase] is not specified, returns extended work data.\n"
 239         );
 240
 241     if (vNodes.empty())
 242         throw JSONRPCError(-9, "NovaCoin is not connected!");
 243
 244     if (IsInitialBlockDownload())
 245         throw JSONRPCError(-10, "NovaCoin is downloading blocks...");
 246
 247     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 248     static mapNewBlock_t mapNewBlock;
 249     static vector<CBlock*> vNewBlock;
 250     static CReserveKey reservekey(pwalletMain);
 251
 252     if (params.size() == 0)
 253     {
 254         // Update block
 255         static unsigned int nTransactionsUpdatedLast;
 256         static CBlockIndex* pindexPrev;
 257         static int64_t nStart;
 258         static CBlock* pblock;
 259         if (pindexPrev != pindexBest ||
 260             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 261         {
 262             if (pindexPrev != pindexBest)
 263             {
 264                 // Deallocate old blocks since they're obsolete now
 265                 mapNewBlock.clear();
 266                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 267                     delete pblock;
 268                 vNewBlock.clear();
 269             }
 270             nTransactionsUpdatedLast = nTransactionsUpdated;
 271             pindexPrev = pindexBest;
 272             nStart = GetTime();
 273
 274             // Create new block
 275             pblock = CreateNewBlock(pwalletMain);
 276             if (!pblock)
 277                 throw JSONRPCError(-7, "Out of memory");
 278             vNewBlock.push_back(pblock);
 279         }
 280
 281         // Update nTime
 282         pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 283         pblock->nNonce = 0;
 284
 285         // Update nExtraNonce
 286         static unsigned int nExtraNonce = 0;
 287         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 288
 289         // Save
 290         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 291
 292         // Prebuild hash buffers
 293         char pmidstate[32];
 294         char pdata[128];
 295         char phash1[64];
 296         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 297
 298         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 299
 300         CTransaction coinbaseTx = pblock->vtx[0];
 301         std::vector<uint256> merkle = pblock->GetMerkleBranch(0);
 302
 303         Object result;
 304         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 305         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 306
 307         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 308         ssTx << coinbaseTx;
 309         result.push_back(Pair("coinbase", HexStr(ssTx.begin(), ssTx.end())));
 310
 311         Array merkle_arr;
 312
 313         BOOST_FOREACH(uint256 merkleh, merkle) {
 314             merkle_arr.push_back(HexStr(BEGIN(merkleh), END(merkleh)));
 315         }
 316
 317         result.push_back(Pair("merkle", merkle_arr));
 318
 319
 320         return result;
 321     }
 322     else
 323     {
 324         // Parse parameters
 325         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 326         vector<unsigned char> coinbase;
 327
 328         if(params.size() == 2)
 329             coinbase = ParseHex(params[1].get_str());
 330
 331         if (vchData.size() != 128)
 332             throw JSONRPCError(-8, "Invalid parameter");
 333
 334         CBlock* pdata = (CBlock*)&vchData[0];
 335
 336         // Byte reverse
 337         for (int i = 0; i < 128/4; i++)
 338             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 339
 340         // Get saved block
 341         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 342             return false;
 343         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 344
 345         pblock->nTime = pdata->nTime;
 346         pblock->nNonce = pdata->nNonce;
 347
 348         if(coinbase.size() == 0)
 349             pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 350         else
 351             CDataStream(coinbase, SER_NETWORK, PROTOCOL_VERSION) >> pblock->vtx[0]; // FIXME - HACK!
 352
 353         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 354
 355         return CheckWork(pblock, *pwalletMain, reservekey);
 356     }
 357 }
 358
 359
 360 Value getwork(const Array& params, bool fHelp)
 361 {
 362     if (fHelp || params.size() > 1)
 363         throw runtime_error(
 364             "getwork [data]\n"
 365             "If [data] is not specified, returns formatted hash data to work on:\n"
 366             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 367             "  \"data\" : block data\n"
 368             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 369             "  \"target\" : little endian hash target\n"
 370             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 371
 372     if (vNodes.empty())
 373         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 374
 375     if (IsInitialBlockDownload())
 376         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 377
 378     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 379     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 380     static vector<CBlock*> vNewBlock;
 381     static CReserveKey reservekey(pwalletMain);
 382
 383     if (params.size() == 0)
 384     {
 385         // Update block
 386         static unsigned int nTransactionsUpdatedLast;
 387         static CBlockIndex* pindexPrev;
 388         static int64_t nStart;
 389         static CBlock* pblock;
 390         if (pindexPrev != pindexBest ||
 391             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 392         {
 393             if (pindexPrev != pindexBest)
 394             {
 395                 // Deallocate old blocks since they're obsolete now
 396                 mapNewBlock.clear();
 397                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 398                     delete pblock;
 399                 vNewBlock.clear();
 400             }
 401
 402             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 403             pindexPrev = NULL;
 404
 405             // Store the pindexBest used before CreateNewBlock, to avoid races
 406             nTransactionsUpdatedLast = nTransactionsUpdated;
 407             CBlockIndex* pindexPrevNew = pindexBest;
 408             nStart = GetTime();
 409
 410             // Create new block
 411             pblock = CreateNewBlock(pwalletMain);
 412             if (!pblock)
 413                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 414             vNewBlock.push_back(pblock);
 415
 416             // Need to update only after we know CreateNewBlock succeeded
 417             pindexPrev = pindexPrevNew;
 418         }
 419
 420         // Update nTime
 421         pblock->UpdateTime(pindexPrev);
 422         pblock->nNonce = 0;
 423
 424         // Update nExtraNonce
 425         static unsigned int nExtraNonce = 0;
 426         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 427
 428         // Save
 429         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 430
 431         // Pre-build hash buffers
 432         char pmidstate[32];
 433         char pdata[128];
 434         char phash1[64];
 435         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 436
 437         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 438
 439         Object result;
 440         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 441         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 442         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 443         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 444         return result;
 445     }
 446     else
 447     {
 448         // Parse parameters
 449         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 450         if (vchData.size() != 128)
 451             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 452         CBlock* pdata = (CBlock*)&vchData[0];
 453
 454         // Byte reverse
 455         for (int i = 0; i < 128/4; i++)
 456             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 457
 458         // Get saved block
 459         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 460             return false;
 461         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 462
 463         pblock->nTime = pdata->nTime;
 464         pblock->nNonce = pdata->nNonce;
 465         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 466         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 467
 468         return CheckWork(pblock, *pwalletMain, reservekey);
 469     }
 470 }
 471
 472
 473 Value getblocktemplate(const Array& params, bool fHelp)
 474 {
 475     if (fHelp || params.size() > 1)
 476         throw runtime_error(
 477             "getblocktemplate [params]\n"
 478             "Returns data needed to construct a block to work on:\n"
 479             "  \"version\" : block version\n"
 480             "  \"previousblockhash\" : hash of current highest block\n"
 481             "  \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n"
 482             "  \"coinbaseaux\" : data that should be included in coinbase\n"
 483             "  \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n"
 484             "  \"target\" : hash target\n"
 485             "  \"mintime\" : minimum timestamp appropriate for next block\n"
 486             "  \"curtime\" : current timestamp\n"
 487             "  \"mutable\" : list of ways the block template may be changed\n"
 488             "  \"noncerange\" : range of valid nonces\n"
 489             "  \"sigoplimit\" : limit of sigops in blocks\n"
 490             "  \"sizelimit\" : limit of block size\n"
 491             "  \"bits\" : compressed target of next block\n"
 492             "  \"height\" : height of the next block\n"
 493             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 494
 495     std::string strMode = "template";
 496     if (params.size() > 0)
 497     {
 498         const Object& oparam = params[0].get_obj();
 499         const Value& modeval = find_value(oparam, "mode");
 500         if (modeval.type() == str_type)
 501             strMode = modeval.get_str();
 502         else if (modeval.type() == null_type)
 503         {
 504             /* Do nothing */
 505         }
 506         else
 507             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 508     }
 509
 510     if (strMode != "template")
 511         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 512
 513     if (vNodes.empty())
 514         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 515
 516     if (IsInitialBlockDownload())
 517         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 518
 519     static CReserveKey reservekey(pwalletMain);
 520
 521     // Update block
 522     static unsigned int nTransactionsUpdatedLast;
 523     static CBlockIndex* pindexPrev;
 524     static int64_t nStart;
 525     static CBlock* pblock;
 526     if (pindexPrev != pindexBest ||
 527         (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5))
 528     {
 529         // Clear pindexPrev so future calls make a new block, despite any failures from here on
 530         pindexPrev = NULL;
 531
 532         // Store the pindexBest used before CreateNewBlock, to avoid races
 533         nTransactionsUpdatedLast = nTransactionsUpdated;
 534         CBlockIndex* pindexPrevNew = pindexBest;
 535         nStart = GetTime();
 536
 537         // Create new block
 538         if(pblock)
 539         {
 540             delete pblock;
 541             pblock = NULL;
 542         }
 543         pblock = CreateNewBlock(pwalletMain);
 544         if (!pblock)
 545             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 546
 547         // Need to update only after we know CreateNewBlock succeeded
 548         pindexPrev = pindexPrevNew;
 549     }
 550
 551     // Update nTime
 552     pblock->UpdateTime(pindexPrev);
 553     pblock->nNonce = 0;
 554
 555     Array transactions;
 556     map<uint256, int64_t> setTxIndex;
 557     int i = 0;
 558     CTxDB txdb("r");
 559     BOOST_FOREACH (CTransaction& tx, pblock->vtx)
 560     {
 561         uint256 txHash = tx.GetHash();
 562         setTxIndex[txHash] = i++;
 563
 564         if (tx.IsCoinBase() || tx.IsCoinStake())
 565             continue;
 566
 567         Object entry;
 568
 569         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 570         ssTx << tx;
 571         entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end())));
 572
 573         entry.push_back(Pair("hash", txHash.GetHex()));
 574
 575         MapPrevTx mapInputs;
 576         map<uint256, CTxIndex> mapUnused;
 577         bool fInvalid = false;
 578         if (tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid))
 579         {
 580             entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(mapInputs) - tx.GetValueOut())));
 581
 582             Array deps;
 583             BOOST_FOREACH (MapPrevTx::value_type& inp, mapInputs)
 584             {
 585                 if (setTxIndex.count(inp.first))
 586                     deps.push_back(setTxIndex[inp.first]);
 587             }
 588             entry.push_back(Pair("depends", deps));
 589
 590             int64_t nSigOps = tx.GetLegacySigOpCount();
 591             nSigOps += tx.GetP2SHSigOpCount(mapInputs);
 592             entry.push_back(Pair("sigops", nSigOps));
 593         }
 594
 595         transactions.push_back(entry);
 596     }
 597
 598     Object aux;
 599     aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
 600
 601     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 602
 603     static Array aMutable;
 604     if (aMutable.empty())
 605     {
 606         aMutable.push_back("time");
 607         aMutable.push_back("transactions");
 608         aMutable.push_back("prevblock");
 609     }
 610
 611     Object result;
 612     result.push_back(Pair("version", pblock->nVersion));
 613     result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
 614     result.push_back(Pair("transactions", transactions));
 615     result.push_back(Pair("coinbaseaux", aux));
 616     result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue));
 617     result.push_back(Pair("target", hashTarget.GetHex()));
 618     result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
 619     result.push_back(Pair("mutable", aMutable));
 620     result.push_back(Pair("noncerange", "00000000ffffffff"));
 621     result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS));
 622     result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE));
 623     result.push_back(Pair("curtime", (int64_t)pblock->nTime));
 624     result.push_back(Pair("bits", HexBits(pblock->nBits)));
 625     result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
 626
 627     return result;
 628 }
 629
 630 Value submitblock(const Array& params, bool fHelp)
 631 {
 632     if (fHelp || params.size() < 1 || params.size() > 2)
 633         throw runtime_error(
 634             "submitblock <hex data> [optional-params-obj]\n"
 635             "[optional-params-obj] parameter is currently ignored.\n"
 636             "Attempts to submit new block to network.\n"
 637             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 638
 639     vector<unsigned char> blockData(ParseHex(params[0].get_str()));
 640     CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
 641     CBlock block;
 642     try {
 643         ssBlock >> block;
 644     }
 645     catch (const std::exception&) {
 646         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 647     }
 648
 649     bool fAccepted = ProcessBlock(NULL, &block);
 650     if (!fAccepted)
 651         return "rejected";
 652
 653     return Value::null;
 654 }
 655