From 4c67b566465449fea8ff964ee2179dca51c2e2d4 Mon Sep 17 00:00:00 2001 From: alexhz Date: Mon, 18 Feb 2013 18:53:50 +0000 Subject: [PATCH] add getblocktemplate support --- src/bitcoinrpc.cpp | 188 +++++++++++++++++++++++++++++++++++++++++++++++++++- 1 files changed, 187 insertions(+), 1 deletions(-) diff --git a/src/bitcoinrpc.cpp b/src/bitcoinrpc.cpp index 0a53c7f..d626895 100644 --- a/src/bitcoinrpc.cpp +++ b/src/bitcoinrpc.cpp @@ -1909,7 +1909,6 @@ Value getwork(const Array& params, bool fHelp) } } - Value getmemorypool(const Array& params, bool fHelp) { if (fHelp || params.size() > 1) @@ -2001,6 +2000,191 @@ Value getmemorypool(const Array& params, bool fHelp) } } + +Value getblocktemplate(const Array& params, bool fHelp) +{ + if (fHelp || params.size() > 1) + throw runtime_error( + "getblocktemplate [params]\n" + "Returns data needed to construct a block to work on:\n" + " \"version\" : block version\n" + " \"previousblockhash\" : hash of current highest block\n" + " \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n" + " \"coinbaseaux\" : data that should be included in coinbase\n" + " \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n" + " \"target\" : hash target\n" + " \"mintime\" : minimum timestamp appropriate for next block\n" + " \"curtime\" : current timestamp\n" + " \"mutable\" : list of ways the block template may be changed\n" + " \"noncerange\" : range of valid nonces\n" + " \"sigoplimit\" : limit of sigops in blocks\n" + " \"sizelimit\" : limit of block size\n" + " \"bits\" : compressed target of next block\n" + " \"height\" : height of the next block\n" + "See https://en.bitcoin.it/wiki/BIP_0022 for full specification."); + + std::string strMode = "template"; + if (params.size() > 0) + { + const Object& oparam = params[0].get_obj(); + const Value& modeval = find_value(oparam, "mode"); + if (modeval.type() == str_type) + strMode = modeval.get_str(); + else + throw JSONRPCError(-8, "Invalid mode"); + } + + if (strMode != "template") + throw JSONRPCError(-8, "Invalid mode"); + + if (vNodes.empty()) + throw JSONRPCError(-9, "NovaCoin is not connected!"); + + if (IsInitialBlockDownload()) + throw JSONRPCError(-10, "NovaCoin is downloading blocks..."); + + static CReserveKey reservekey(pwalletMain); + + // Update block + static unsigned int nTransactionsUpdatedLast; + static CBlockIndex* pindexPrev; + static int64 nStart; + static CBlock* pblock; + if (pindexPrev != pindexBest || + (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5)) + { + // Clear pindexPrev so future calls make a new block, despite any failures from here on + pindexPrev = NULL; + + // Store the pindexBest used before CreateNewBlock, to avoid races + nTransactionsUpdatedLast = nTransactionsUpdated; + CBlockIndex* pindexPrevNew = pindexBest; + nStart = GetTime(); + + // Create new block + if(pblock) + { + delete pblock; + pblock = NULL; + } + pblock = CreateNewBlock(pwalletMain); + if (!pblock) + throw JSONRPCError(-7, "Out of memory"); + + // Need to update only after we know CreateNewBlock succeeded + pindexPrev = pindexPrevNew; + } + + // Update nTime + pblock->UpdateTime(pindexPrev); + pblock->nNonce = 0; + + Array transactions; + map setTxIndex; + int i = 0; + CTxDB txdb("r"); + BOOST_FOREACH (CTransaction& tx, pblock->vtx) + { + uint256 txHash = tx.GetHash(); + setTxIndex[txHash] = i++; + + if (tx.IsCoinBase() || tx.IsCoinStake()) + continue; + + Object entry; + + CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); + ssTx << tx; + entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end()))); + + entry.push_back(Pair("hash", txHash.GetHex())); + + MapPrevTx mapInputs; + map mapUnused; + bool fInvalid = false; + if (tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid)) + { + entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(mapInputs) - tx.GetValueOut()))); + + Array deps; + BOOST_FOREACH (MapPrevTx::value_type& inp, mapInputs) + { + if (setTxIndex.count(inp.first)) + deps.push_back(setTxIndex[inp.first]); + } + entry.push_back(Pair("depends", deps)); + + int64_t nSigOps = tx.GetLegacySigOpCount(); + nSigOps += tx.GetP2SHSigOpCount(mapInputs); + entry.push_back(Pair("sigops", nSigOps)); + } + + transactions.push_back(entry); + } + + Object aux; + aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end()))); + + uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256(); + + static Array aMutable; + if (aMutable.empty()) + { + aMutable.push_back("time"); + aMutable.push_back("transactions"); + aMutable.push_back("prevblock"); + } + + Object result; + result.push_back(Pair("version", pblock->nVersion)); + result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex())); + result.push_back(Pair("transactions", transactions)); + result.push_back(Pair("coinbaseaux", aux)); + result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue)); + result.push_back(Pair("target", hashTarget.GetHex())); + result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1)); + result.push_back(Pair("mutable", aMutable)); + result.push_back(Pair("noncerange", "00000000ffffffff")); + result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS)); + result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE)); + result.push_back(Pair("curtime", (int64_t)pblock->nTime)); + result.push_back(Pair("bits", HexBits(pblock->nBits))); + result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1))); + + return result; +} + +Value submitblock(const Array& params, bool fHelp) +{ + if (fHelp || params.size() < 1 || params.size() > 2) + throw runtime_error( + "submitblock [optional-params-obj]\n" + "[optional-params-obj] parameter is currently ignored.\n" + "Attempts to submit new block to network.\n" + "See https://en.bitcoin.it/wiki/BIP_0022 for full specification."); + + vector blockData(ParseHex(params[0].get_str())); + CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION); + CBlock block; + try { + ssBlock >> block; + } + catch (std::exception &e) { + throw JSONRPCError(-22, "Block decode failed"); + } + + static CReserveKey reservekey(pwalletMain); + + if(!block.SignBlock(*pwalletMain)) + throw JSONRPCError(-100, "Unable to sign block, wallet locked?"); + + bool fAccepted = CheckWork(&block, *pwalletMain, reservekey); + if (!fAccepted) + return "rejected"; + + return Value::null; +} + Value getnewpubkey(const Array& params, bool fHelp) { if (fHelp || params.size() > 1) @@ -2329,6 +2513,8 @@ static const CRPCCommand vRPCCommands[] = { "listaccounts", &listaccounts, false }, { "settxfee", &settxfee, false }, { "getmemorypool", &getmemorypool, true }, + { "getblocktemplate", &getblocktemplate, true }, + { "submitblock", &submitblock, false }, { "listsinceblock", &listsinceblock, false }, { "dumpprivkey", &dumpprivkey, false }, { "importprivkey", &importprivkey, false }, -- 1.7.1