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Remove checkpoints

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The headers presync logic should be enough to prevent memory DoS using
low-work headers. Therefore, we no longer have any use for checkpoints.
This commit is contained in:
marcofleon
2025-01-13 15:08:41 +00:00
parent 632ae47372
commit 3c5d1a4681
18 changed files with 10 additions and 731 deletions
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12
src/validation.cpp
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@@ -4214,18 +4214,6 @@ static bool ContextualCheckBlockHeader(const CBlockHeader& block, BlockValidatio
if (block.nBits != GetNextWorkRequired(pindexPrev, &block, consensusParams))
return state.Invalid(BlockValidationResult::BLOCK_INVALID_HEADER, "bad-diffbits", "incorrect proof of work");
// Check against checkpoints
if (chainman.m_options.checkpoints_enabled) {
// Don't accept any forks from the main chain prior to last checkpoint.
// GetLastCheckpoint finds the last checkpoint in MapCheckpoints that's in our
// BlockIndex().
const CBlockIndex* pcheckpoint = blockman.GetLastCheckpoint(chainman.GetParams().Checkpoints());
if (pcheckpoint && nHeight < pcheckpoint->nHeight) {
LogPrintf("ERROR: %s: forked chain older than last checkpoint (height %d)\n", __func__, nHeight);
return state.Invalid(BlockValidationResult::BLOCK_CHECKPOINT, "bad-fork-prior-to-checkpoint");
}
}
// Check timestamp against prev
if (block.GetBlockTime() <= pindexPrev->GetMedianTimePast())
return state.Invalid(BlockValidationResult::BLOCK_INVALID_HEADER, "time-too-old", "block's timestamp is too early");