RPC, cosmetic: Create rpcmining.cpp as new home for mining-related RPC code

1 files changed, 380 insertions, 0 deletions

diff --git a/src/rpcmining.cpp b/src/rpcmining.cpp
new file mode 100644
index 0000000000..5d983d21d4
--- /dev/null
+++ b/src/rpcmining.cpp
@@ -0,0 +1,380 @@
+// Copyright (c) 2010 Satoshi Nakamoto
+// Copyright (c) 2009-2012 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "main.h"
+#include "db.h"
+#include "init.h"
+#include "bitcoinrpc.h"
+
+using namespace json_spirit;
+using namespace std;
+
+extern double GetDifficulty(const CBlockIndex* blockindex = NULL);
+extern std::string HexBits(unsigned int nBits);
+
+Value getgenerate(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() != 0)
+        throw runtime_error(
+            "getgenerate\n"
+            "Returns true or false.");
+
+    return GetBoolArg("-gen");
+}
+
+
+Value setgenerate(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() < 1 || params.size() > 2)
+        throw runtime_error(
+            "setgenerate <generate> [genproclimit]\n"
+            "<generate> is true or false to turn generation on or off.\n"
+            "Generation is limited to [genproclimit] processors, -1 is unlimited.");
+
+    bool fGenerate = true;
+    if (params.size() > 0)
+        fGenerate = params[0].get_bool();
+
+    if (params.size() > 1)
+    {
+        int nGenProcLimit = params[1].get_int();
+        mapArgs["-genproclimit"] = itostr(nGenProcLimit);
+        if (nGenProcLimit == 0)
+            fGenerate = false;
+    }
+    mapArgs["-gen"] = (fGenerate ? "1" : "0");
+
+    GenerateBitcoins(fGenerate, pwalletMain);
+    return Value::null;
+}
+
+
+Value gethashespersec(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() != 0)
+        throw runtime_error(
+            "gethashespersec\n"
+            "Returns a recent hashes per second performance measurement while generating.");
+
+    if (GetTimeMillis() - nHPSTimerStart > 8000)
+        return (boost::int64_t)0;
+    return (boost::int64_t)dHashesPerSec;
+}
+
+
+Value getmininginfo(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() != 0)
+        throw runtime_error(
+            "getmininginfo\n"
+            "Returns an object containing mining-related information.");
+
+    Object obj;
+    obj.push_back(Pair("blocks",        (int)nBestHeight));
+    obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
+    obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
+    obj.push_back(Pair("difficulty",    (double)GetDifficulty()));
+    obj.push_back(Pair("errors",        GetWarnings("statusbar")));
+    obj.push_back(Pair("generate",      GetBoolArg("-gen")));
+    obj.push_back(Pair("genproclimit",  (int)GetArg("-genproclimit", -1)));
+    obj.push_back(Pair("hashespersec",  gethashespersec(params, false)));
+    obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
+    obj.push_back(Pair("testnet",       fTestNet));
+    return obj;
+}
+
+
+Value getwork(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() > 1)
+        throw runtime_error(
+            "getwork [data]\n"
+            "If [data] is not specified, returns formatted hash data to work on:\n"
+            "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
+            "  \"data\" : block data\n"
+            "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
+            "  \"target\" : little endian hash target\n"
+            "If [data] is specified, tries to solve the block and returns true if it was successful.");
+
+    if (vNodes.empty())
+        throw JSONRPCError(-9, "Bitcoin is not connected!");
+
+    if (IsInitialBlockDownload())
+        throw JSONRPCError(-10, "Bitcoin is downloading blocks...");
+
+    typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
+    static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
+    static vector<CBlock*> vNewBlock;
+    static CReserveKey reservekey(pwalletMain);
+
+    if (params.size() == 0)
+    {
+        // Update block
+        static unsigned int nTransactionsUpdatedLast;
+        static CBlockIndex* pindexPrev;
+        static int64 nStart;
+        static CBlock* pblock;
+        if (pindexPrev != pindexBest ||
+            (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
+        {
+            if (pindexPrev != pindexBest)
+            {
+                // Deallocate old blocks since they're obsolete now
+                mapNewBlock.clear();
+                BOOST_FOREACH(CBlock* pblock, vNewBlock)
+                    delete pblock;
+                vNewBlock.clear();
+            }
+
+            // Clear pindexPrev so future getworks 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
+            pblock = CreateNewBlock(reservekey);
+            if (!pblock)
+                throw JSONRPCError(-7, "Out of memory");
+            vNewBlock.push_back(pblock);
+
+            // Need to update only after we know CreateNewBlock succeeded
+            pindexPrev = pindexPrevNew;
+        }
+
+        // Update nTime
+        pblock->UpdateTime(pindexPrev);
+        pblock->nNonce = 0;
+
+        // Update nExtraNonce
+        static unsigned int nExtraNonce = 0;
+        IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
+
+        // Save
+        mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
+
+        // Pre-build hash buffers
+        char pmidstate[32];
+        char pdata[128];
+        char phash1[64];
+        FormatHashBuffers(pblock, pmidstate, pdata, phash1);
+
+        uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
+
+        Object result;
+        result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
+        result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
+        result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
+        result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
+        return result;
+    }
+    else
+    {
+        // Parse parameters
+        vector<unsigned char> vchData = ParseHex(params[0].get_str());
+        if (vchData.size() != 128)
+            throw JSONRPCError(-8, "Invalid parameter");
+        CBlock* pdata = (CBlock*)&vchData[0];
+
+        // Byte reverse
+        for (int i = 0; i < 128/4; i++)
+            ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
+
+        // Get saved block
+        if (!mapNewBlock.count(pdata->hashMerkleRoot))
+            return false;
+        CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
+
+        pblock->nTime = pdata->nTime;
+        pblock->nNonce = pdata->nNonce;
+        pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
+        pblock->hashMerkleRoot = pblock->BuildMerkleTree();
+
+        return CheckWork(pblock, *pwalletMain, reservekey);
+    }
+}
+
+
+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, "Bitcoin is not connected!");
+
+    if (IsInitialBlockDownload())
+        throw JSONRPCError(-10, "Bitcoin 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(reservekey);
+        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<uint256, int64_t> setTxIndex;
+    int i = 0;
+    CTxDB txdb("r");
+    BOOST_FOREACH (CTransaction& tx, pblock->vtx)
+    {
+        uint256 txHash = tx.GetHash();
+        setTxIndex[txHash] = i++;
+
+        if (tx.IsCoinBase())
+            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<uint256, CTxIndex> 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 <hex data> [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<unsigned char> 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");
+    }
+
+    bool fAccepted = ProcessBlock(NULL, &block);
+    if (!fAccepted)
+        throw JSONRPCError(-23, "Block rejected");
+
+    return true;
+}
+