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     result.push_back(Pair("signature", HexStr(block.vchBlockSig.begin(), block.vchBlockSig.end())));
  91
  92     return result;
  93 }
  94
  95
  96 Value getblockcount(const Array& params, bool fHelp)
  97 {
  98     if (fHelp || params.size() != 0)
  99         throw runtime_error(
 100             "getblockcount\n"
 101             "Returns the number of blocks in the longest block chain.");
 102
 103     return nBestHeight;
 104 }
 105
 106
 107 Value getdifficulty(const Array& params, bool fHelp)
 108 {
 109     if (fHelp || params.size() != 0)
 110         throw runtime_error(
 111             "getdifficulty\n"
 112             "Returns the difficulty as a multiple of the minimum difficulty.");
 113
 114     Object obj;
 115     obj.push_back(Pair("proof-of-work",        GetDifficulty()));
 116     obj.push_back(Pair("proof-of-stake",       GetDifficulty(GetLastBlockIndex(pindexBest, true))));
 117     obj.push_back(Pair("search-interval",      (int)nLastCoinStakeSearchInterval));
 118     return obj;
 119 }
 120
 121
 122 Value settxfee(const Array& params, bool fHelp)
 123 {
 124     if (fHelp || params.size() < 1 || params.size() > 1 || AmountFromValue(params[0]) < MIN_TX_FEE)
 125         throw runtime_error(
 126             "settxfee <amount>\n"
 127             "<amount> is a real and is rounded to the nearest 0.01");
 128
 129     nTransactionFee = AmountFromValue(params[0]);
 130     nTransactionFee = (nTransactionFee / CENT) * CENT;  // round to cent
 131
 132     return true;
 133 }
 134
 135 Value getrawmempool(const Array& params, bool fHelp)
 136 {
 137     if (fHelp || params.size() != 0)
 138         throw runtime_error(
 139             "getrawmempool\n"
 140             "Returns all transaction ids in memory pool.");
 141
 142     vector<uint256> vtxid;
 143     mempool.queryHashes(vtxid);
 144
 145     Array a;
 146     BOOST_FOREACH(const uint256& hash, vtxid)
 147         a.push_back(hash.ToString());
 148
 149     return a;
 150 }
 151
 152 Value getblockhash(const Array& params, bool fHelp)
 153 {
 154     if (fHelp || params.size() != 1)
 155         throw runtime_error(
 156             "getblockhash <index>\n"
 157             "Returns hash of block in best-block-chain at <index>.");
 158
 159     int nHeight = params[0].get_int();
 160     if (nHeight < 0 || nHeight > nBestHeight)
 161         throw runtime_error("Block number out of range.");
 162
 163     CBlockIndex* pblockindex = FindBlockByHeight(nHeight);
 164     return pblockindex->phashBlock->GetHex();
 165 }
 166
 167 Value getblock(const Array& params, bool fHelp)
 168 {
 169     if (fHelp || params.size() < 1 || params.size() > 2)
 170         throw runtime_error(
 171             "getblock <hash> [txinfo]\n"
 172             "txinfo optional to print more detailed tx info\n"
 173             "Returns details of a block with given block-hash.");
 174
 175     std::string strHash = params[0].get_str();
 176     uint256 hash(strHash);
 177
 178     if (mapBlockIndex.count(hash) == 0)
 179         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
 180
 181     CBlock block;
 182     CBlockIndex* pblockindex = mapBlockIndex[hash];
 183     block.ReadFromDisk(pblockindex, true);
 184
 185     return blockToJSON(block, pblockindex, params.size() > 1 ? params[1].get_bool() : false);
 186 }
 187
 188 Value getblockbynumber(const Array& params, bool fHelp)
 189 {
 190     if (fHelp || params.size() < 1 || params.size() > 2)
 191         throw runtime_error(
 192             "getblock <number> [txinfo]\n"
 193             "txinfo optional to print more detailed tx info\n"
 194             "Returns details of a block with given block-number.");
 195
 196     int nHeight = params[0].get_int();
 197     if (nHeight < 0 || nHeight > nBestHeight)
 198         throw runtime_error("Block number out of range.");
 199
 200     CBlock block;
 201     CBlockIndex* pblockindex = mapBlockIndex[hashBestChain];
 202     while (pblockindex->nHeight > nHeight)
 203         pblockindex = pblockindex->pprev;
 204
 205     uint256 hash = *pblockindex->phashBlock;
 206
 207     pblockindex = mapBlockIndex[hash];
 208     block.ReadFromDisk(pblockindex, true);
 209
 210     return blockToJSON(block, pblockindex, params.size() > 1 ? params[1].get_bool() : false);
 211 }
 212
 213 // ppcoin: get information of sync-checkpoint
 214 Value getcheckpoint(const Array& params, bool fHelp)
 215 {
 216     if (fHelp || params.size() != 0)
 217         throw runtime_error(
 218             "getcheckpoint\n"
 219             "Show info of synchronized checkpoint.\n");
 220
 221     Object result;
 222     CBlockIndex* pindexCheckpoint;
 223
 224     result.push_back(Pair("synccheckpoint", Checkpoints::hashSyncCheckpoint.ToString().c_str()));
 225     pindexCheckpoint = mapBlockIndex[Checkpoints::hashSyncCheckpoint];
 226     result.push_back(Pair("height", pindexCheckpoint->nHeight));
 227     result.push_back(Pair("timestamp", DateTimeStrFormat(pindexCheckpoint->GetBlockTime()).c_str()));
 228     if (mapArgs.count("-checkpointkey"))
 229         result.push_back(Pair("checkpointmaster", true));
 230
 231     return result;
 232 }