C++ CBlockIndex::GetBlockHash方法代码示例

    // ppcoin: only descendant of current sync-checkpoint is allowed
    bool ValidateSyncCheckpoint(uint256 hashCheckpoint)
    {
        if (!mapBlockIndex.count(hashSyncCheckpoint))
            return error("ValidateSyncCheckpoint: block index missing for current sync-checkpoint %s", hashSyncCheckpoint.ToString());
        if (!mapBlockIndex.count(hashCheckpoint))
            return error("ValidateSyncCheckpoint: block index missing for received sync-checkpoint %s", hashCheckpoint.ToString());

        CBlockIndex* pindexSyncCheckpoint = mapBlockIndex[hashSyncCheckpoint];
        CBlockIndex* pindexCheckpointRecv = mapBlockIndex[hashCheckpoint];

        if (pindexCheckpointRecv->nHeight <= pindexSyncCheckpoint->nHeight)
        {
            // Received an older checkpoint, trace back from current checkpoint
            // to the same height of the received checkpoint to verify
            // that current checkpoint should be a descendant block
            CBlockIndex* pindex = pindexSyncCheckpoint;
            while (pindex->nHeight > pindexCheckpointRecv->nHeight)
                if (!(pindex = pindex->pprev))
                    return error("ValidateSyncCheckpoint: pprev null - block index structure failure");
            if (pindex->GetBlockHash() != hashCheckpoint)
            {
                hashInvalidCheckpoint = hashCheckpoint;
                return error("ValidateSyncCheckpoint: new sync-checkpoint %s is conflicting with current sync-checkpoint %s", hashCheckpoint.ToString(), hashSyncCheckpoint.ToString());
            }
            return false; // ignore older checkpoint
        }

        // Received checkpoint should be a descendant block of the current
        // checkpoint. Trace back to the same height of current checkpoint
        // to verify.
        CBlockIndex* pindex = pindexCheckpointRecv;
        while (pindex->nHeight > pindexSyncCheckpoint->nHeight)
            if (!(pindex = pindex->pprev))
                return error("ValidateSyncCheckpoint: pprev2 null - block index structure failure");
        if (pindex->GetBlockHash() != hashSyncCheckpoint)
        {
            hashInvalidCheckpoint = hashCheckpoint;
            return error("ValidateSyncCheckpoint: new sync-checkpoint %s is not a descendant of current sync-checkpoint %s", hashCheckpoint.ToString(), hashSyncCheckpoint.ToString());
        }
        return true;
    }

std::string getexplorerBlockHash(int64_t Height)
{
    std::string genesisblockhash = "0000041e482b9b9691d98eefb48473405c0b8ec31b76df3797c74a78680ef818";
    CBlockIndex* pindexBest = mapBlockIndex[chainActive.Tip()->GetBlockHash()];
    if ((Height < 0) || (Height > pindexBest->nHeight)) {
        return genesisblockhash;
    }

    CBlock block;
    CBlockIndex* pblockindex = mapBlockIndex[chainActive.Tip()->GetBlockHash()];
    while (pblockindex->nHeight > Height)
        pblockindex = pblockindex->pprev;
    return pblockindex->GetBlockHash().GetHex(); // pblockindex->phashBlock->GetHex();
}

Value getblockhash(const Array& params, bool fHelp)
{
    if (fHelp || params.size() != 1)
        throw runtime_error(
            "getblockhash <index>\n"
            "Returns hash of block in best-block-chain at <index>.");

    int nHeight = params[0].get_int();
    if (nHeight < 0 || nHeight > chainActive.Height())
        throw runtime_error("Block number out of range.");

    CBlockIndex* pblockindex = chainActive[nHeight];
    return pblockindex->GetBlockHash().GetHex();
}

std::string getBlockHash(qint64 Height)
{
    if(Height > pindexBest->nHeight) { return ""; }
    if(Height < 0) { return ""; }
    qint64 desiredheight;
    desiredheight = Height;
    if (desiredheight < 0 || desiredheight > nBestHeight)
        return 0;

    CBlockIndex* pblockindex = mapBlockIndex[hashBestChain];
    while (pblockindex->nHeight > desiredheight)
        pblockindex = pblockindex->pprev;
    return  pblockindex->GetBlockHash().GetHex(); // pblockindex->phashBlock->GetHex();
}

std::string getBlockHash(int Height)
{
    if(Height > pindexBest->nHeight) { return "351c6703813172725c6d660aa539ee6a3d7a9fe784c87fae7f36582e3b797058"; }
    if(Height < 0) { return "351c6703813172725c6d660aa539ee6a3d7a9fe784c87fae7f36582e3b797058"; }
    int desiredheight;
    desiredheight = Height;
    if (desiredheight < 0 || desiredheight > nBestHeight)
        return 0;

    CBlock block;
    CBlockIndex* pblockindex = mapBlockIndex[hashBestChain];
    while (pblockindex->nHeight > desiredheight)
        pblockindex = pblockindex->pprev;
    return  pblockindex->GetBlockHash().GetHex(); // pblockindex->phashBlock->GetHex();
}

bool IsBlockValueValid(const CBlock& block, CAmount nExpectedValue, CAmount nMinted)
{
    CBlockIndex* pindexPrev = chainActive.Tip();
    if (pindexPrev == NULL) return true;

    int nHeight = 0;
    if (pindexPrev->GetBlockHash() == block.hashPrevBlock) {
        nHeight = pindexPrev->nHeight + 1;
    } else { //out of order
        BlockMap::iterator mi = mapBlockIndex.find(block.hashPrevBlock);
        if (mi != mapBlockIndex.end() && (*mi).second)
            nHeight = (*mi).second->nHeight + 1;
    }

    if (nHeight == 0) {
        LogPrint("masternode","IsBlockValueValid() : WARNING: Couldn't find previous block\n");
    }

    //LogPrintf("XX69----------> IsBlockValueValid(): nMinted: %d, nExpectedValue: %d\n", FormatMoney(nMinted), FormatMoney(nExpectedValue));

    if (!masternodeSync.IsSynced()) { //there is no budget data to use to check anything
        //super blocks will always be on these blocks, max 100 per budgeting
        if (nHeight % GetBudgetPaymentCycleBlocks() < 100) {
            return true;
        } else {
            if (nMinted > nExpectedValue) {
                return false;
            }
        }
    } else { // we're synced and have data so check the budget schedule

        //are these blocks even enabled
        if (!IsSporkActive(SPORK_13_ENABLE_SUPERBLOCKS)) {
            return nMinted <= nExpectedValue;
        }

        if (budget.IsBudgetPaymentBlock(nHeight)) {
            //the value of the block is evaluated in CheckBlock
            return true;
        } else {
            if (nMinted > nExpectedValue) {
                return false;
            }
        }
    }

    return true;
}

UniValue blockToJSON(const CBlock& block, const CBlockIndex* blockindex, bool txDetails = false)
{
    UniValue result(UniValue::VOBJ);
    result.push_back(Pair("hash", blockindex->GetBlockHash().GetHex()));
    int confirmations = -1;
    // Only report confirmations if the block is on the main chain
    if (chainActive.Contains(blockindex))
        confirmations = chainActive.Height() - blockindex->nHeight + 1;
    result.push_back(Pair("confirmations", confirmations));
    result.push_back(Pair("size", (int)::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION)));
    result.push_back(Pair("height", blockindex->nHeight));
    result.push_back(Pair("version", block.nVersion));
    result.push_back(Pair("versionHex", strprintf("%08x", block.nVersion)));
    result.push_back(Pair("merkleroot", block.hashMerkleRoot.GetHex()));
    result.push_back(Pair("nameclaimroot", block.hashClaimTrie.GetHex()));
    UniValue txs(UniValue::VARR);
    BOOST_FOREACH(const CTransaction&tx, block.vtx)
    {
        if(txDetails)
        {
            UniValue objTx(UniValue::VOBJ);
            TxToJSON(tx, uint256(), objTx);
            txs.push_back(objTx);
        }
        else
            txs.push_back(tx.GetHash().GetHex());
    }
    result.push_back(Pair("tx", txs));
    result.push_back(Pair("time", block.GetBlockTime()));
    result.push_back(Pair("mediantime", (int64_t)blockindex->GetMedianTimePast()));
    result.push_back(Pair("nonce", (uint64_t)block.nNonce));
    result.push_back(Pair("bits", strprintf("%08x", block.nBits)));
    result.push_back(Pair("difficulty", GetDifficulty(blockindex)));
    bool fNegative;
    bool fOverflow;
    arith_uint256 target;
    target.SetCompact(block.nBits, &fNegative, &fOverflow);
    result.push_back(Pair("target", target.ToString()));
    result.push_back(Pair("chainwork", blockindex->nChainWork.GetHex()));

    if (blockindex->pprev)
        result.push_back(Pair("previousblockhash", blockindex->pprev->GetBlockHash().GetHex()));
    CBlockIndex *pnext = chainActive.Next(blockindex);
    if (pnext)
        result.push_back(Pair("nextblockhash", pnext->GetBlockHash().GetHex()));
    return result;
}

std::string getBlockHash(int64_t Height)
{

	CBlockIndex* pindexBest = mapBlockIndex[chainActive.Tip()->GetBlockHash()];
    if(Height > pindexBest->nHeight) { return ""; }
    if(Height < 0) { return ""; }
    int64_t desiredheight;
    desiredheight = Height;
    if (desiredheight < 0 || desiredheight > pindexBest->nHeight)
        return 0;

    CBlock block;
    CBlockIndex* pblockindex =  mapBlockIndex[chainActive.Tip()->GetBlockHash()];
    while (pblockindex->nHeight > desiredheight)
        pblockindex = pblockindex->pprev;
    return  pblockindex->GetBlockHash().GetHex(); // pblockindex->phashBlock->GetHex();
}

Object blockToJSON(const CBlock& block, const CBlockIndex* blockindex, bool txDetails = false)
{
    Object result;
    result.push_back(Pair("hash", block.GetHash().GetHex()));
    int confirmations = -1;
    // Only report confirmations if the block is on the main chain
    if (chainActive.Contains(blockindex))
        confirmations = chainActive.Height() - blockindex->nHeight + 1;
    result.push_back(Pair("confirmations", confirmations));
    result.push_back(Pair("size", (int)::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION)));
    result.push_back(Pair("height", blockindex->nHeight));
    result.push_back(Pair("version", block.nVersion.GetFullVersion()));
    int algo = block.GetAlgo();
    result.push_back(Pair("pow_algo_id", algo));
    result.push_back(Pair("pow_algo", GetAlgoName(algo)));
    result.push_back(Pair("pow_hash", block.GetPoWHash(algo).GetHex()));
    result.push_back(Pair("merkleroot", block.hashMerkleRoot.GetHex()));
    Array txs;
    BOOST_FOREACH(const CTransaction&tx, block.vtx)
    {
        if(txDetails)
        {
            Object objTx;
            TxToJSON(tx, uint256(), objTx);
            txs.push_back(objTx);
        }
        else
            txs.push_back(tx.GetHash().GetHex());
    }
    result.push_back(Pair("tx", txs));
    result.push_back(Pair("time", block.GetBlockTime()));
    result.push_back(Pair("nonce", (uint64_t)block.nNonce));
    result.push_back(Pair("bits", strprintf("%08x", block.nBits)));
    result.push_back(Pair("difficulty", GetDifficulty(blockindex, miningAlgo)));
    result.push_back(Pair("chainwork", blockindex->nChainWork.GetHex()));

    if (block.auxpow)
        result.push_back(Pair("auxpow", auxpowToJSON(*block.auxpow)));

    if (blockindex->pprev)
        result.push_back(Pair("previousblockhash", blockindex->pprev->GetBlockHash().GetHex()));
    CBlockIndex *pnext = chainActive.Next(blockindex);
    if (pnext)
        result.push_back(Pair("nextblockhash", pnext->GetBlockHash().GetHex()));
    return result;
}

bool IsBlockValueValid(const CBlock& block, CAmount nExpectedValue){
    CBlockIndex* pindexPrev = pindexBest;
    if(pindexPrev == NULL) return true;

    int nHeight = 0;
    if(pindexPrev->GetBlockHash() == block.hashPrevBlock)
    {
        nHeight = pindexPrev->nHeight+1;
    }
    //TODO (Amir): Put back... conversion from 'std::map<uint256, CBlockIndex*>::iterator error.
    // else { //out of order
     //   BlockMap::iterator mi = mapBlockIndex.find(block.hashPrevBlock);
     //   if (mi != mapBlockIndex.end() && (*mi).second)
     //       nHeight = (*mi).second->nHeight+1;
    //}

    if(nHeight == 0){
        LogPrintf("IsBlockValueValid() : WARNING: Couldn't find previous block");
    }

    if(!stormnodeSync.IsSynced()) { //there is no budget data to use to check anything
        //super blocks will always be on these blocks, max 100 per budgeting
        if(nHeight % GetBudgetPaymentCycleBlocks() < 100){
            return true;
        } else {
            if(block.vtx[0].GetValueOut() > nExpectedValue) return false;
        }
    } else { // we're synced and have data so check the budget schedule

        //are these blocks even enabled
        if(!IsSporkActive(SPORK_13_ENABLE_SUPERBLOCKS)){
            return block.vtx[0].GetValueOut() <= nExpectedValue;
        }

        if(budget.IsBudgetPaymentBlock(nHeight)){
            //the value of the block is evaluated in CheckBlock
            return true;
        } else {
            if(block.vtx[0].GetValueOut() > nExpectedValue) return false;
        }
    }

    return true;
}

bool CBlockTreeDB::LoadBlockIndexGuts(boost::function<CBlockIndex*(const uint256&)> insertBlockIndex)
{
    boost::scoped_ptr<CDBIterator> pcursor(NewIterator());

    pcursor->Seek(make_pair(DB_BLOCK_INDEX, uint256()));

    // Load mapBlockIndex
    while (pcursor->Valid()) {
        boost::this_thread::interruption_point();
        std::pair<char, uint256> key;
        if (pcursor->GetKey(key) && key.first == DB_BLOCK_INDEX) {
            CDiskBlockIndex diskindex;
            if (pcursor->GetValue(diskindex)) {
                // Construct block index object
                CBlockIndex* pindexNew = insertBlockIndex(diskindex.GetBlockHash());
                pindexNew->pprev          = insertBlockIndex(diskindex.hashPrev);
                pindexNew->nHeight        = diskindex.nHeight;
                pindexNew->nFile          = diskindex.nFile;
                pindexNew->nDataPos       = diskindex.nDataPos;
                pindexNew->nUndoPos       = diskindex.nUndoPos;
                pindexNew->nVersion       = diskindex.nVersion;
		pindexNew->nDustVote      = diskindex.nDustVote;
                pindexNew->hashMerkleRoot = diskindex.hashMerkleRoot;
                pindexNew->nTime          = diskindex.nTime;
                pindexNew->nBits          = diskindex.nBits;
                pindexNew->nNonce         = diskindex.nNonce;
                pindexNew->nStatus        = diskindex.nStatus;
                pindexNew->nTx            = diskindex.nTx;

                if (!CheckProofOfWork(pindexNew->GetBlockHash(), pindexNew->nBits, Params().GetConsensus()))
                    return error("LoadBlockIndex(): CheckProofOfWork failed: %s", pindexNew->ToString());

                pcursor->Next();
            } else {
                return error("LoadBlockIndex() : failed to read value");
            }
        } else {
            break;
        }
    }

    return true;
}

Object blockToJSON(const CBlock& block, const CBlockIndex* blockindex)
{
    Object result;
    result.push_back(Pair("hash", block.GetHash().GetHex()));
    CMerkleTx txGen(block.vtx[0]);
    txGen.SetMerkleBranch(&block);
    result.push_back(Pair("confirmations", (int)txGen.GetDepthInMainChain()));
    result.push_back(Pair("size", (int)::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION)));
    result.push_back(Pair("height", blockindex->nHeight));
    result.push_back(Pair("version", block.nVersion));
    result.push_back(Pair("merkleroot", block.hashMerkleRoot.GetHex()));
    Array txs;
    Array txuserhashes;
    Array usernames;
    std::string spamMessage;
    std::string spamUser;
    BOOST_FOREACH(const CTransaction&tx, block.vtx) {
        txs.push_back(tx.GetHash().GetHex());
        if( tx.IsSpamMessage() ) {
          spamMessage = tx.message.ExtractPushDataString(0);
          spamUser = tx.userName.ExtractPushDataString(0);
        } else {
          txuserhashes.push_back(tx.GetUsernameHash().GetHex());
          usernames.push_back(tx.userName.ExtractSmallString());
        }
    }
    result.push_back(Pair("tx", txs));
    result.push_back(Pair("spamMessage", spamMessage));
    result.push_back(Pair("spamUser", spamUser));
    result.push_back(Pair("userhashes", txuserhashes));
    result.push_back(Pair("usernames", usernames));
    result.push_back(Pair("time", (boost::int64_t)block.GetBlockTime()));
    result.push_back(Pair("nonce", (boost::uint64_t)block.nNonce));
    result.push_back(Pair("bits", HexBits(block.nBits)));
    result.push_back(Pair("difficulty", GetDifficulty(blockindex)));

    if (blockindex->pprev)
        result.push_back(Pair("previousblockhash", blockindex->pprev->GetBlockHash().GetHex()));
    CBlockIndex *pnext = blockindex->GetNextInMainChain();
    if (pnext)
        result.push_back(Pair("nextblockhash", pnext->GetBlockHash().GetHex()));
    return result;
}

Object blockToJSON(const CBlock& block, const CBlockIndex* blockindex, bool txDetails = false)
{
    Object result;
    result.push_back(Pair("hash", block.GetHash().GetHex()));
    int confirmations = -1;
    // Only report confirmations if the block is on the main chain
    if (chainActive.Contains(blockindex))
        confirmations = chainActive.Height() - blockindex->nHeight + 1;
    result.push_back(Pair("confirmations", confirmations));
    result.push_back(Pair("size", (int)::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION)));
    result.push_back(Pair("height", blockindex->nHeight));
    result.push_back(Pair("version", block.nVersion.GetFullVersion()));
    result.push_back(Pair("proof_type", block.IsProofOfStake() ? "PoS" : "PoW"));
    if (block.IsProofOfStake())
        result.push_back(Pair("stake_source", COutPoint(block.stakePointer.txid, block.stakePointer.nPos).ToString()));
    result.push_back(Pair("merkleroot", block.hashMerkleRoot.GetHex()));
    Array txs;
    BOOST_FOREACH(const CTransaction&tx, block.vtx)
    {
        if(txDetails)
        {
            Object objTx;
            TxToJSON(tx, uint256(), objTx);
            txs.push_back(objTx);
        }
        else
            txs.push_back(tx.GetHash().GetHex());
    }
    result.push_back(Pair("tx", txs));
    result.push_back(Pair("time", block.GetBlockTime()));
    result.push_back(Pair("nonce", (uint64_t)block.nNonce));
    result.push_back(Pair("bits", strprintf("%08x", block.nBits)));
    result.push_back(Pair("difficulty", GetDifficulty(blockindex)));
    result.push_back(Pair("chainwork", blockindex->nChainWork.GetHex()));
    result.push_back(Pair("block_witnesses", (int64_t)g_proofTracker->GetWitnessCount(block.GetHash())));

    if (blockindex->pprev)
        result.push_back(Pair("previousblockhash", blockindex->pprev->GetBlockHash().GetHex()));
    CBlockIndex *pnext = chainActive.Next(blockindex);
    if (pnext)
        result.push_back(Pair("nextblockhash", pnext->GetBlockHash().GetHex()));
    return result;
}

Value getblockhash(const Array& params, bool fHelp)
{
    if (fHelp || params.size() != 1)
        throw runtime_error(
            "getblockhash index\n"
            "\nReturns hash of block in best-block-chain at index provided.\n"
            "\nArguments:\n"
            "1. index         (numeric, required) The block index\n"
            "\nResult:\n"
            "\"hash\"         (string) The block hash\n"
            "\nExamples:\n"
            + HelpExampleCli("getblockhash", "1000")
            + HelpExampleRpc("getblockhash", "1000")
        );

    int nHeight = params[0].get_int();
    if (nHeight < 0 || nHeight > chainActive.Height())
        throw runtime_error("Block number out of range.");

    CBlockIndex* pblockindex = chainActive[nHeight];
    return pblockindex->GetBlockHash().GetHex();
}

Object blockToJSON(const CBlock& block, const CBlockIndex* blockindex)
{
    Object result;
    result.push_back(Pair("hash", block.GetHash().GetHex()));
    CMerkleTx txGen(block.vtx[0]);
    txGen.SetMerkleBranch(&block);
    result.push_back(Pair("confirmations", (int)txGen.GetDepthInMainChain()));
    result.push_back(Pair("size", (int)blockindex->nSize));
    result.push_back(Pair("chainsize", blockindex->nChainSize));
    if (chainActive.Contains(blockindex))
        result.push_back(Pair("maxsize", (int)chainActive.MaxBlockSize(blockindex->nHeight)));
    result.push_back(Pair("height", blockindex->nHeight));
    
    result.push_back(Pair("version", (uint64_t)block.GetVersion()));
    result.push_back(Pair("ispok", block.IsPoKBlock()));
    if (block.IsPoKBlock())
        result.push_back(Pair("pok", (uint64_t)block.GetPoK()));
    result.push_back(Pair("merkleroot", block.hashMerkleRoot.GetHex()));
    result.push_back(Pair("time", block.GetBlockTime()));
    result.push_back(Pair("bits", HexBits(block.nBits)));
    result.push_back(Pair("nonce", (uint64_t)block.nNonce));
    Array txs;
    BOOST_FOREACH(const CTransaction&tx, block.vtx)
        txs.push_back(tx.GetHash().GetHex());
    result.push_back(Pair("tx", txs));
    result.push_back(Pair("difficulty", GetDifficulty(blockindex)));
    result.push_back(Pair("chainwork", blockindex->nChainWork.GetHex()));
    result.push_back(Pair("ntx", (int64_t)blockindex->nTx));
    result.push_back(Pair("nchaintx", (int64_t)blockindex->nChainTx));
    
    if (blockindex->pprev)
        result.push_back(Pair("previousblockhash", blockindex->pprev->GetBlockHash().GetHex()));
    CBlockIndex *pnext = chainActive.Next(blockindex);
    if (pnext)
        result.push_back(Pair("nextblockhash", pnext->GetBlockHash().GetHex()));
    return result;
}