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
  14 double GetDifficulty(const CBlockIndex* blockindex)
  15 {
  16     // Floating point number that is a multiple of the minimum difficulty,
  17     // minimum difficulty = 1.0.
  18     if (blockindex == NULL)
  19     {
  20         if (pindexBest == NULL)
  21             return 1.0;
  22         else
  23             blockindex = GetLastBlockIndex(pindexBest, false);
  24     }
  25
  26     int nShift = (blockindex->nBits >> 24) & 0xff;
  27
  28     double dDiff =
  29         (double)0x0000ffff / (double)(blockindex->nBits & 0x00ffffff);
  30
  31     while (nShift < 29)
  32     {
  33         dDiff *= 256.0;
  34         nShift++;
  35     }
  36     while (nShift > 29)
  37     {
  38         dDiff /= 256.0;
  39         nShift--;
  40     }
  41
  42     return dDiff;
  43 }
  44
  45
  46 Object blockToJSON(const CBlock& block, const CBlockIndex* blockindex, bool fPrintTransactionDetail)
  47 {
  48     Object result;
  49     result.push_back(Pair("hash", block.GetHash().GetHex()));
  50     CMerkleTx txGen(block.vtx[0]);
  51     txGen.SetMerkleBranch(&block);
  52     result.push_back(Pair("confirmations", (int)txGen.GetDepthInMainChain()));
  53     result.push_back(Pair("size", (int)::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION)));
  54     result.push_back(Pair("height", blockindex->nHeight));
  55     result.push_back(Pair("version", block.nVersion));
  56     result.push_back(Pair("merkleroot", block.hashMerkleRoot.GetHex()));
  57     result.push_back(Pair("mint", ValueFromAmount(blockindex->nMint)));
  58     result.push_back(Pair("time", (boost::int64_t)block.GetBlockTime()));
  59     result.push_back(Pair("nonce", (boost::uint64_t)block.nNonce));
  60     result.push_back(Pair("bits", HexBits(block.nBits)));
  61     result.push_back(Pair("difficulty", GetDifficulty(blockindex)));
  62
  63     if (blockindex->pprev)
  64         result.push_back(Pair("previousblockhash", blockindex->pprev->GetBlockHash().GetHex()));
  65     if (blockindex->pnext)
  66         result.push_back(Pair("nextblockhash", blockindex->pnext->GetBlockHash().GetHex()));
  67
  68     result.push_back(Pair("flags", strprintf("%s%s", blockindex->IsProofOfStake()? "proof-of-stake" : "proof-of-work", blockindex->GeneratedStakeModifier()? " stake-modifier": "")));
  69     result.push_back(Pair("proofhash", blockindex->IsProofOfStake()? blockindex->hashProofOfStake.GetHex() : blockindex->GetBlockHash().GetHex()));
  70     result.push_back(Pair("entropybit", (int)blockindex->GetStakeEntropyBit()));
  71     result.push_back(Pair("modifier", strprintf("%016"PRI64x, blockindex->nStakeModifier)));
  72     result.push_back(Pair("modifierchecksum", strprintf("%08x", blockindex->nStakeModifierChecksum)));
  73     Array txinfo;
  74     BOOST_FOREACH (const CTransaction& tx, block.vtx)
  75     {
  76         if (fPrintTransactionDetail)
  77         {
  78             Object entry;
  79
  80             entry.push_back(Pair("txid", tx.GetHash().GetHex()));
  81             TxToJSON(tx, 0, entry);
  82
  83             txinfo.push_back(entry);
  84         }
  85         else
  86             txinfo.push_back(tx.GetHash().GetHex());
  87     }
  88
  89     result.push_back(Pair("tx", txinfo));
  90
  91     if ( block.IsProofOfStake() || (!fTestNet && block.GetBlockTime() < CHAINCHECKS_SWITCH_TIME) )
  92         result.push_back(Pair("signature", HexStr(block.vchBlockSig.begin(), block.vchBlockSig.end())));
  93
  94     return result;
  95 }
  96
  97
  98 Value getblockcount(const Array& params, bool fHelp)
  99 {
 100     if (fHelp || params.size() != 0)
 101         throw runtime_error(
 102             "getblockcount\n"
 103             "Returns the number of blocks in the longest block chain.");
 104
 105     return nBestHeight;
 106 }
 107
 108
 109 Value getdifficulty(const Array& params, bool fHelp)
 110 {
 111     if (fHelp || params.size() != 0)
 112         throw runtime_error(
 113             "getdifficulty\n"
 114             "Returns the difficulty as a multiple of the minimum difficulty.");
 115
 116     Object obj;
 117     obj.push_back(Pair("proof-of-work",        GetDifficulty()));
 118     obj.push_back(Pair("proof-of-stake",       GetDifficulty(GetLastBlockIndex(pindexBest, true))));
 119     obj.push_back(Pair("search-interval",      (int)nLastCoinStakeSearchInterval));
 120     return obj;
 121 }
 122
 123
 124 Value settxfee(const Array& params, bool fHelp)
 125 {
 126     if (fHelp || params.size() < 1 || params.size() > 1 || AmountFromValue(params[0]) < MIN_TX_FEE)
 127         throw runtime_error(
 128             "settxfee <amount>\n"
 129             "<amount> is a real and is rounded to the nearest 0.01");
 130
 131     nTransactionFee = AmountFromValue(params[0]);
 132     nTransactionFee = (nTransactionFee / CENT) * CENT;  // round to cent
 133
 134     return true;
 135 }
 136
 137 Value getrawmempool(const Array& params, bool fHelp)
 138 {
 139     if (fHelp || params.size() != 0)
 140         throw runtime_error(
 141             "getrawmempool\n"
 142             "Returns all transaction ids in memory pool.");
 143
 144     vector<uint256> vtxid;
 145     mempool.queryHashes(vtxid);
 146
 147     Array a;
 148     BOOST_FOREACH(const uint256& hash, vtxid)
 149         a.push_back(hash.ToString());
 150
 151     return a;
 152 }
 153
 154 Value getblockhash(const Array& params, bool fHelp)
 155 {
 156     if (fHelp || params.size() != 1)
 157         throw runtime_error(
 158             "getblockhash <index>\n"
 159             "Returns hash of block in best-block-chain at <index>.");
 160
 161     int nHeight = params[0].get_int();
 162     if (nHeight < 0 || nHeight > nBestHeight)
 163         throw runtime_error("Block number out of range.");
 164
 165     CBlockIndex* pblockindex = FindBlockByHeight(nHeight);
 166     return pblockindex->phashBlock->GetHex();
 167 }
 168
 169 Value getblock(const Array& params, bool fHelp)
 170 {
 171     if (fHelp || params.size() < 1 || params.size() > 2)
 172         throw runtime_error(
 173             "getblock <hash> [txinfo]\n"
 174             "txinfo optional to print more detailed tx info\n"
 175             "Returns details of a block with given block-hash.");
 176
 177     std::string strHash = params[0].get_str();
 178     uint256 hash(strHash);
 179
 180     if (mapBlockIndex.count(hash) == 0)
 181         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
 182
 183     CBlock block;
 184     CBlockIndex* pblockindex = mapBlockIndex[hash];
 185     block.ReadFromDisk(pblockindex, true);
 186
 187     return blockToJSON(block, pblockindex, params.size() > 1 ? params[1].get_bool() : false);
 188 }
 189
 190 Value getblockbynumber(const Array& params, bool fHelp)
 191 {
 192     if (fHelp || params.size() < 1 || params.size() > 2)
 193         throw runtime_error(
 194             "getblock <number> [txinfo]\n"
 195             "txinfo optional to print more detailed tx info\n"
 196             "Returns details of a block with given block-number.");
 197
 198     int nHeight = params[0].get_int();
 199     if (nHeight < 0 || nHeight > nBestHeight)
 200         throw runtime_error("Block number out of range.");
 201
 202     CBlock block;
 203     CBlockIndex* pblockindex = mapBlockIndex[hashBestChain];
 204     while (pblockindex->nHeight > nHeight)
 205         pblockindex = pblockindex->pprev;
 206
 207     uint256 hash = *pblockindex->phashBlock;
 208
 209     pblockindex = mapBlockIndex[hash];
 210     block.ReadFromDisk(pblockindex, true);
 211
 212     return blockToJSON(block, pblockindex, params.size() > 1 ? params[1].get_bool() : false);
 213 }
 214
 215 // ppcoin: get information of sync-checkpoint
 216 Value getcheckpoint(const Array& params, bool fHelp)
 217 {
 218     if (fHelp || params.size() != 0)
 219         throw runtime_error(
 220             "getcheckpoint\n"
 221             "Show info of synchronized checkpoint.\n");
 222
 223     Object result;
 224     CBlockIndex* pindexCheckpoint;
 225
 226     result.push_back(Pair("synccheckpoint", Checkpoints::hashSyncCheckpoint.ToString().c_str()));
 227     pindexCheckpoint = mapBlockIndex[Checkpoints::hashSyncCheckpoint];
 228     result.push_back(Pair("height", pindexCheckpoint->nHeight));
 229     result.push_back(Pair("timestamp", DateTimeStrFormat(pindexCheckpoint->GetBlockTime()).c_str()));
 230     if (mapArgs.count("-checkpointkey"))
 231         result.push_back(Pair("checkpointmaster", true));
 232
 233     return result;
 234 }