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