src/rpcblockchain.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 "bitcoinrpc.h"
   8
   9 using namespace json_spirit;
  10 using namespace std;
  11
  12 extern void TxToJSON(const CTransaction& tx, const uint256 hashBlock, json_spirit::Object& entry);
  13 extern enum Checkpoints::CPMode CheckpointsMode;
  14
  15 double GetDifficulty(const CBlockIndex* blockindex)
  16 {
  17     // Floating point number that is a multiple of the minimum difficulty,
  18     // minimum difficulty = 1.0.
  19     if (blockindex == NULL)
  20     {
  21         if (pindexBest == NULL)
  22             return 1.0;
  23         else
  24             blockindex = GetLastBlockIndex(pindexBest, false);
  25     }
  26
  27     int nShift = (blockindex->nBits >> 24) & 0xff;
  28
  29     double dDiff =
  30         (double)0x0000ffff / (double)(blockindex->nBits & 0x00ffffff);
  31
  32     while (nShift < 29)
  33     {
  34         dDiff *= 256.0;
  35         nShift++;
  36     }
  37     while (nShift > 29)
  38     {
  39         dDiff /= 256.0;
  40         nShift--;
  41     }
  42
  43     return dDiff;
  44 }
  45
  46 double GetPoWMHashPS()
  47 {
  48     int nPoWInterval = 72;
  49     int64 nTargetSpacingWorkMin = 30, nTargetSpacingWork = 30;
  50
  51     CBlockIndex* pindex = pindexGenesisBlock;
  52     CBlockIndex* pindexPrevWork = pindexGenesisBlock;
  53
  54     while (pindex)
  55     {
  56         if (pindex->IsProofOfWork())
  57         {
  58             int64 nActualSpacingWork = pindex->GetBlockTime() - pindexPrevWork->GetBlockTime();
  59             nTargetSpacingWork = ((nPoWInterval - 1) * nTargetSpacingWork + nActualSpacingWork + nActualSpacingWork) / (nPoWInterval + 1);
  60             nTargetSpacingWork = max(nTargetSpacingWork, nTargetSpacingWorkMin);
  61             pindexPrevWork = pindex;
  62         }
  63
  64         pindex = pindex->pnext;
  65     }
  66
  67     return GetDifficulty() * 4294.967296 / nTargetSpacingWork;
  68 }
  69
  70 double GetPoSKernelPS()
  71 {
  72     int nPoSInterval = 72;
  73     double dStakeKernelsTriedAvg = 0;
  74     int nStakesHandled = 0, nStakesTime = 0;
  75
  76     CBlockIndex* pindex = pindexBest;;
  77     CBlockIndex* pindexPrevStake = NULL;
  78
  79     while (pindex && nStakesHandled < nPoSInterval)
  80     {
  81         if (pindex->IsProofOfStake())
  82         {
  83             dStakeKernelsTriedAvg += GetDifficulty(pindex) * 4294967296.0;
  84             nStakesTime += pindexPrevStake ? (pindexPrevStake->nTime - pindex->nTime) : 0;
  85             pindexPrevStake = pindex;
  86             nStakesHandled++;
  87         }
  88
  89         pindex = pindex->pprev;
  90     }
  91
  92     return dStakeKernelsTriedAvg / nStakesTime;
  93 }
  94
  95 Object blockToJSON(const CBlock& block, const CBlockIndex* blockindex, bool fPrintTransactionDetail)
  96 {
  97     Object result;
  98     result.push_back(Pair("hash", block.GetHash().GetHex()));
  99     CMerkleTx txGen(block.vtx[0]);
 100     txGen.SetMerkleBranch(&block);
 101     result.push_back(Pair("confirmations", (int)txGen.GetDepthInMainChain()));
 102     result.push_back(Pair("size", (int)::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION)));
 103     result.push_back(Pair("height", blockindex->nHeight));
 104     result.push_back(Pair("version", block.nVersion));
 105     result.push_back(Pair("merkleroot", block.hashMerkleRoot.GetHex()));
 106     result.push_back(Pair("mint", ValueFromAmount(blockindex->nMint)));
 107     result.push_back(Pair("time", (boost::int64_t)block.GetBlockTime()));
 108     result.push_back(Pair("nonce", (boost::uint64_t)block.nNonce));
 109     result.push_back(Pair("bits", HexBits(block.nBits)));
 110     result.push_back(Pair("difficulty", GetDifficulty(blockindex)));
 111     result.push_back(Pair("blocktrust", leftTrim(blockindex->GetBlockTrust().GetHex(), '0')));
 112     result.push_back(Pair("chaintrust", leftTrim(blockindex->nChainTrust.GetHex(), '0')));
 113     if (blockindex->pprev)
 114         result.push_back(Pair("previousblockhash", blockindex->pprev->GetBlockHash().GetHex()));
 115     if (blockindex->pnext)
 116         result.push_back(Pair("nextblockhash", blockindex->pnext->GetBlockHash().GetHex()));
 117
 118     result.push_back(Pair("flags", strprintf("%s%s", blockindex->IsProofOfStake()? "proof-of-stake" : "proof-of-work", blockindex->GeneratedStakeModifier()? " stake-modifier": "")));
 119     result.push_back(Pair("proofhash", blockindex->IsProofOfStake()? blockindex->hashProofOfStake.GetHex() : blockindex->GetBlockHash().GetHex()));
 120     result.push_back(Pair("entropybit", (int)blockindex->GetStakeEntropyBit()));
 121     result.push_back(Pair("modifier", strprintf("%016"PRI64x, blockindex->nStakeModifier)));
 122     result.push_back(Pair("modifierchecksum", strprintf("%08x", blockindex->nStakeModifierChecksum)));
 123     Array txinfo;
 124     BOOST_FOREACH (const CTransaction& tx, block.vtx)
 125     {
 126         if (fPrintTransactionDetail)
 127         {
 128             CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 129             ssTx << tx;
 130             string strHex = HexStr(ssTx.begin(), ssTx.end());
 131
 132             txinfo.push_back(strHex);
 133         }
 134         else
 135             txinfo.push_back(tx.GetHash().GetHex());
 136     }
 137
 138     result.push_back(Pair("tx", txinfo));
 139
 140     if ( block.IsProofOfStake() || (!fTestNet && block.GetBlockTime() < ENTROPY_SWITCH_TIME) )
 141         result.push_back(Pair("signature", HexStr(block.vchBlockSig.begin(), block.vchBlockSig.end())));
 142
 143     return result;
 144 }
 145
 146 Value getbestblockhash(const Array& params, bool fHelp)
 147 {
 148     if (fHelp || params.size() != 0)
 149         throw runtime_error(
 150             "getbestblockhash\n"
 151             "Returns the hash of the best block in the longest block chain.");
 152
 153     return hashBestChain.GetHex();
 154 }
 155
 156 Value getblockcount(const Array& params, bool fHelp)
 157 {
 158     if (fHelp || params.size() != 0)
 159         throw runtime_error(
 160             "getblockcount\n"
 161             "Returns the number of blocks in the longest block chain.");
 162
 163     return nBestHeight;
 164 }
 165
 166
 167 Value getdifficulty(const Array& params, bool fHelp)
 168 {
 169     if (fHelp || params.size() != 0)
 170         throw runtime_error(
 171             "getdifficulty\n"
 172             "Returns the difficulty as a multiple of the minimum difficulty.");
 173
 174     Object obj;
 175     obj.push_back(Pair("proof-of-work",        GetDifficulty()));
 176     obj.push_back(Pair("proof-of-stake",       GetDifficulty(GetLastBlockIndex(pindexBest, true))));
 177     obj.push_back(Pair("search-interval",      (int)nLastCoinStakeSearchInterval));
 178     return obj;
 179 }
 180
 181
 182 Value settxfee(const Array& params, bool fHelp)
 183 {
 184     if (fHelp || params.size() < 1 || params.size() > 1 || AmountFromValue(params[0]) < MIN_TX_FEE)
 185         throw runtime_error(
 186             "settxfee <amount>\n"
 187             "<amount> is a real and is rounded to the nearest " + FormatMoney(MIN_TX_FEE));
 188
 189     nTransactionFee = AmountFromValue(params[0]);
 190     nTransactionFee = (nTransactionFee / MIN_TX_FEE) * MIN_TX_FEE;  // round to minimum fee
 191
 192     return true;
 193 }
 194
 195 Value getrawmempool(const Array& params, bool fHelp)
 196 {
 197     if (fHelp || params.size() != 0)
 198         throw runtime_error(
 199             "getrawmempool\n"
 200             "Returns all transaction ids in memory pool.");
 201
 202     vector<uint256> vtxid;
 203     mempool.queryHashes(vtxid);
 204
 205     Array a;
 206     BOOST_FOREACH(const uint256& hash, vtxid)
 207         a.push_back(hash.ToString());
 208
 209     return a;
 210 }
 211
 212 Value getblockhash(const Array& params, bool fHelp)
 213 {
 214     if (fHelp || params.size() != 1)
 215         throw runtime_error(
 216             "getblockhash <index>\n"
 217             "Returns hash of block in best-block-chain at <index>.");
 218
 219     int nHeight = params[0].get_int();
 220     if (nHeight < 0 || nHeight > nBestHeight)
 221         throw runtime_error("Block number out of range.");
 222
 223     CBlockIndex* pblockindex = FindBlockByHeight(nHeight);
 224     return pblockindex->phashBlock->GetHex();
 225 }
 226
 227 Value getblock(const Array& params, bool fHelp)
 228 {
 229     if (fHelp || params.size() < 1 || params.size() > 2)
 230         throw runtime_error(
 231             "getblock <hash> [txinfo]\n"
 232             "txinfo optional to print more detailed tx info\n"
 233             "Returns details of a block with given block-hash.");
 234
 235     std::string strHash = params[0].get_str();
 236     uint256 hash(strHash);
 237
 238     if (mapBlockIndex.count(hash) == 0)
 239         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
 240
 241     CBlock block;
 242     CBlockIndex* pblockindex = mapBlockIndex[hash];
 243     block.ReadFromDisk(pblockindex, true);
 244
 245     return blockToJSON(block, pblockindex, params.size() > 1 ? params[1].get_bool() : false);
 246 }
 247
 248 Value getblockbynumber(const Array& params, bool fHelp)
 249 {
 250     if (fHelp || params.size() < 1 || params.size() > 2)
 251         throw runtime_error(
 252             "getblock <number> [txinfo]\n"
 253             "txinfo optional to print more detailed tx info\n"
 254             "Returns details of a block with given block-number.");
 255
 256     int nHeight = params[0].get_int();
 257     if (nHeight < 0 || nHeight > nBestHeight)
 258         throw runtime_error("Block number out of range.");
 259
 260     CBlock block;
 261     CBlockIndex* pblockindex = mapBlockIndex[hashBestChain];
 262     while (pblockindex->nHeight > nHeight)
 263         pblockindex = pblockindex->pprev;
 264
 265     uint256 hash = *pblockindex->phashBlock;
 266
 267     pblockindex = mapBlockIndex[hash];
 268     block.ReadFromDisk(pblockindex, true);
 269
 270     return blockToJSON(block, pblockindex, params.size() > 1 ? params[1].get_bool() : false);
 271 }
 272
 273 // get information of sync-checkpoint
 274 Value getcheckpoint(const Array& params, bool fHelp)
 275 {
 276     if (fHelp || params.size() != 0)
 277         throw runtime_error(
 278             "getcheckpoint\n"
 279             "Show info of synchronized checkpoint.\n");
 280
 281     Object result;
 282     CBlockIndex* pindexCheckpoint;
 283
 284     result.push_back(Pair("synccheckpoint", Checkpoints::hashSyncCheckpoint.ToString().c_str()));
 285     pindexCheckpoint = mapBlockIndex[Checkpoints::hashSyncCheckpoint];
 286     result.push_back(Pair("height", pindexCheckpoint->nHeight));
 287     result.push_back(Pair("timestamp", DateTimeStrFormat(pindexCheckpoint->GetBlockTime()).c_str()));
 288
 289     if (Checkpoints::checkpointMessage.vchSig.size() != 0)
 290     {
 291         Object msgdata;
 292         CUnsignedSyncCheckpoint checkpoint;
 293
 294         CDataStream sMsg(Checkpoints::checkpointMessage.vchMsg, SER_NETWORK, PROTOCOL_VERSION);
 295         sMsg >> checkpoint;
 296
 297         Object parsed; // message version and data (block hash)
 298         parsed.push_back(Pair("version", checkpoint.nVersion));
 299         parsed.push_back(Pair("hash", checkpoint.hashCheckpoint.GetHex().c_str()));
 300         msgdata.push_back(Pair("parsed", parsed));
 301
 302         Object raw; // raw checkpoint message data
 303         raw.push_back(Pair("data", HexStr(Checkpoints::checkpointMessage.vchMsg).c_str()));
 304         raw.push_back(Pair("signature", HexStr(Checkpoints::checkpointMessage.vchSig).c_str()));
 305         msgdata.push_back(Pair("raw", raw));
 306
 307         result.push_back(Pair("data", msgdata));
 308     }
 309
 310     // Check that the block satisfies synchronized checkpoint
 311     if (CheckpointsMode == Checkpoints::STRICT)
 312         result.push_back(Pair("policy", "strict"));
 313
 314     if (CheckpointsMode == Checkpoints::ADVISORY)
 315         result.push_back(Pair("policy", "advisory"));
 316
 317     if (CheckpointsMode == Checkpoints::PERMISSIVE)
 318         result.push_back(Pair("policy", "permissive"));
 319
 320     if (mapArgs.count("-checkpointkey"))
 321         result.push_back(Pair("checkpointmaster", true));
 322
 323     return result;
 324 }