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@ -2018,52 +2018,51 @@ bool CBlock::AcceptBlock(CDiskBlockPos *dbp)
@@ -2018,52 +2018,51 @@ bool CBlock::AcceptBlock(CDiskBlockPos *dbp)
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CBlockIndex* pindexPrev = NULL; |
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int nHeight = 0; |
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if (hash != hashGenesisBlock) { |
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map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashPrevBlock); |
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if (mi == mapBlockIndex.end()) |
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return DoS(10, error("AcceptBlock() : prev block not found")); |
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pindexPrev = (*mi).second; |
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nHeight = pindexPrev->nHeight+1; |
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// Check proof of work
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if (nBits != GetNextWorkRequired(pindexPrev, this)) |
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return DoS(100, error("AcceptBlock() : incorrect proof of work")); |
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// Check timestamp against prev
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if (GetBlockTime() <= pindexPrev->GetMedianTimePast()) |
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return error("AcceptBlock() : block's timestamp is too early"); |
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// Check that all transactions are finalized
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BOOST_FOREACH(const CTransaction& tx, vtx) |
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if (!tx.IsFinal(nHeight, GetBlockTime())) |
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return DoS(10, error("AcceptBlock() : contains a non-final transaction")); |
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// Check that the block chain matches the known block chain up to a checkpoint
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if (!Checkpoints::CheckBlock(nHeight, hash)) |
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return DoS(100, error("AcceptBlock() : rejected by checkpoint lock-in at %d", nHeight)); |
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// Reject block.nVersion=1 blocks when 95% (75% on testnet) of the network has upgraded:
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if (nVersion < 2) |
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{ |
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if ((!fTestNet && CBlockIndex::IsSuperMajority(2, pindexPrev, 950, 1000)) || |
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(fTestNet && CBlockIndex::IsSuperMajority(2, pindexPrev, 75, 100))) |
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map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashPrevBlock); |
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if (mi == mapBlockIndex.end()) |
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return DoS(10, error("AcceptBlock() : prev block not found")); |
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pindexPrev = (*mi).second; |
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nHeight = pindexPrev->nHeight+1; |
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// Check proof of work
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if (nBits != GetNextWorkRequired(pindexPrev, this)) |
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return DoS(100, error("AcceptBlock() : incorrect proof of work")); |
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// Check timestamp against prev
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if (GetBlockTime() <= pindexPrev->GetMedianTimePast()) |
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return error("AcceptBlock() : block's timestamp is too early"); |
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// Check that all transactions are finalized
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BOOST_FOREACH(const CTransaction& tx, vtx) |
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if (!tx.IsFinal(nHeight, GetBlockTime())) |
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return DoS(10, error("AcceptBlock() : contains a non-final transaction")); |
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// Check that the block chain matches the known block chain up to a checkpoint
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if (!Checkpoints::CheckBlock(nHeight, hash)) |
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return DoS(100, error("AcceptBlock() : rejected by checkpoint lock-in at %d", nHeight)); |
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// Reject block.nVersion=1 blocks when 95% (75% on testnet) of the network has upgraded:
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if (nVersion < 2) |
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{ |
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return error("AcceptBlock() : rejected nVersion=1 block"); |
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if ((!fTestNet && CBlockIndex::IsSuperMajority(2, pindexPrev, 950, 1000)) || |
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(fTestNet && CBlockIndex::IsSuperMajority(2, pindexPrev, 75, 100))) |
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{ |
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return error("AcceptBlock() : rejected nVersion=1 block"); |
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} |
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} |
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} |
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// Enforce block.nVersion=2 rule that the coinbase starts with serialized block height
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if (nVersion >= 2) |
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{ |
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// if 750 of the last 1,000 blocks are version 2 or greater (51/100 if testnet):
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if ((!fTestNet && CBlockIndex::IsSuperMajority(2, pindexPrev, 750, 1000)) || |
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(fTestNet && CBlockIndex::IsSuperMajority(2, pindexPrev, 51, 100))) |
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// Enforce block.nVersion=2 rule that the coinbase starts with serialized block height
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if (nVersion >= 2) |
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{ |
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CScript expect = CScript() << nHeight; |
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if (!std::equal(expect.begin(), expect.end(), vtx[0].vin[0].scriptSig.begin())) |
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return DoS(100, error("AcceptBlock() : block height mismatch in coinbase")); |
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// if 750 of the last 1,000 blocks are version 2 or greater (51/100 if testnet):
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if ((!fTestNet && CBlockIndex::IsSuperMajority(2, pindexPrev, 750, 1000)) || |
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(fTestNet && CBlockIndex::IsSuperMajority(2, pindexPrev, 51, 100))) |
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{ |
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CScript expect = CScript() << nHeight; |
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if (!std::equal(expect.begin(), expect.end(), vtx[0].vin[0].scriptSig.begin())) |
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return DoS(100, error("AcceptBlock() : block height mismatch in coinbase")); |
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} |
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} |
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} |
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} |
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// Write block to history file
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unsigned int nBlockSize = ::GetSerializeSize(*this, SER_DISK, CLIENT_VERSION); |
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