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 Value getbestblockhash(const Array& params, bool fHelp)
  98 {
  99     if (fHelp || params.size() != 0)
 100         throw runtime_error(
 101             "getbestblockhash\n"
 102             "Returns the hash of the best block in the longest block chain.");
 103
 104     return hashBestChain.GetHex();
 105 }
 106
 107 Value getblockcount(const Array& params, bool fHelp)
 108 {
 109     if (fHelp || params.size() != 0)
 110         throw runtime_error(
 111             "getblockcount\n"
 112             "Returns the number of blocks in the longest block chain.");
 113
 114     return nBestHeight;
 115 }
 116
 117
 118 Value getdifficulty(const Array& params, bool fHelp)
 119 {
 120     if (fHelp || params.size() != 0)
 121         throw runtime_error(
 122             "getdifficulty\n"
 123             "Returns the difficulty as a multiple of the minimum difficulty.");
 124
 125     Object obj;
 126     obj.push_back(Pair("proof-of-work",        GetDifficulty()));
 127     obj.push_back(Pair("proof-of-stake",       GetDifficulty(GetLastBlockIndex(pindexBest, true))));
 128     obj.push_back(Pair("search-interval",      (int)nLastCoinStakeSearchInterval));
 129     return obj;
 130 }
 131
 132
 133 Value settxfee(const Array& params, bool fHelp)
 134 {
 135     if (fHelp || params.size() < 1 || params.size() > 1 || AmountFromValue(params[0]) < MIN_TX_FEE)
 136         throw runtime_error(
 137             "settxfee <amount>\n"
 138             "<amount> is a real and is rounded to the nearest 0.01");
 139
 140     nTransactionFee = AmountFromValue(params[0]);
 141     nTransactionFee = (nTransactionFee / CENT) * CENT;  // round to cent
 142
 143     return true;
 144 }
 145
 146 Value getrawmempool(const Array& params, bool fHelp)
 147 {
 148     if (fHelp || params.size() != 0)
 149         throw runtime_error(
 150             "getrawmempool\n"
 151             "Returns all transaction ids in memory pool.");
 152
 153     vector<uint256> vtxid;
 154     mempool.queryHashes(vtxid);
 155
 156     Array a;
 157     BOOST_FOREACH(const uint256& hash, vtxid)
 158         a.push_back(hash.ToString());
 159
 160     return a;
 161 }
 162
 163 Value getblockhash(const Array& params, bool fHelp)
 164 {
 165     if (fHelp || params.size() != 1)
 166         throw runtime_error(
 167             "getblockhash <index>\n"
 168             "Returns hash of block in best-block-chain at <index>.");
 169
 170     int nHeight = params[0].get_int();
 171     if (nHeight < 0 || nHeight > nBestHeight)
 172         throw runtime_error("Block number out of range.");
 173
 174     CBlockIndex* pblockindex = FindBlockByHeight(nHeight);
 175     return pblockindex->phashBlock->GetHex();
 176 }
 177
 178 Value getblock(const Array& params, bool fHelp)
 179 {
 180     if (fHelp || params.size() < 1 || params.size() > 2)
 181         throw runtime_error(
 182             "getblock <hash> [txinfo]\n"
 183             "txinfo optional to print more detailed tx info\n"
 184             "Returns details of a block with given block-hash.");
 185
 186     std::string strHash = params[0].get_str();
 187     uint256 hash(strHash);
 188
 189     if (mapBlockIndex.count(hash) == 0)
 190         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
 191
 192     CBlock block;
 193     CBlockIndex* pblockindex = mapBlockIndex[hash];
 194     block.ReadFromDisk(pblockindex, true);
 195
 196     return blockToJSON(block, pblockindex, params.size() > 1 ? params[1].get_bool() : false);
 197 }
 198
 199 Value getblockbynumber(const Array& params, bool fHelp)
 200 {
 201     if (fHelp || params.size() < 1 || params.size() > 2)
 202         throw runtime_error(
 203             "getblock <number> [txinfo]\n"
 204             "txinfo optional to print more detailed tx info\n"
 205             "Returns details of a block with given block-number.");
 206
 207     int nHeight = params[0].get_int();
 208     if (nHeight < 0 || nHeight > nBestHeight)
 209         throw runtime_error("Block number out of range.");
 210
 211     CBlock block;
 212     CBlockIndex* pblockindex = mapBlockIndex[hashBestChain];
 213     while (pblockindex->nHeight > nHeight)
 214         pblockindex = pblockindex->pprev;
 215
 216     uint256 hash = *pblockindex->phashBlock;
 217
 218     pblockindex = mapBlockIndex[hash];
 219     block.ReadFromDisk(pblockindex, true);
 220
 221     return blockToJSON(block, pblockindex, params.size() > 1 ? params[1].get_bool() : false);
 222 }
 223
 224 // ppcoin: get information of sync-checkpoint
 225 Value getcheckpoint(const Array& params, bool fHelp)
 226 {
 227     if (fHelp || params.size() != 0)
 228         throw runtime_error(
 229             "getcheckpoint\n"
 230             "Show info of synchronized checkpoint.\n");
 231
 232     Object result;
 233     CBlockIndex* pindexCheckpoint;
 234
 235     result.push_back(Pair("synccheckpoint", Checkpoints::hashSyncCheckpoint.ToString().c_str()));
 236     pindexCheckpoint = mapBlockIndex[Checkpoints::hashSyncCheckpoint];
 237     result.push_back(Pair("height", pindexCheckpoint->nHeight));
 238     result.push_back(Pair("timestamp", DateTimeStrFormat(pindexCheckpoint->GetBlockTime()).c_str()));
 239     if (mapArgs.count("-checkpointkey"))
 240         result.push_back(Pair("checkpointmaster", true));
 241
 242     return result;
 243 }