diff options
Diffstat (limited to 'src/net_processing.cpp')
| -rw-r--r-- | src/net_processing.cpp | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/net_processing.cpp b/src/net_processing.cpp index d48a118dd6..43e15487f3 100644 --- a/src/net_processing.cpp +++ b/src/net_processing.cpp @@ -4629,6 +4629,17 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type, LogPrint(BCLog::NET, "received block %s peer=%d\n", pblock->GetHash().ToString(), pfrom.GetId()); + const CBlockIndex* prev_block{WITH_LOCK(m_chainman.GetMutex(), return m_chainman.m_blockman.LookupBlockIndex(pblock->hashPrevBlock))}; + + // Check for possible mutation if it connects to something we know so we can check for DEPLOYMENT_SEGWIT being active + if (prev_block && IsBlockMutated(/*block=*/*pblock, + /*check_witness_root=*/DeploymentActiveAfter(prev_block, m_chainman, Consensus::DEPLOYMENT_SEGWIT))) { + LogPrint(BCLog::NET, "Received mutated block from peer=%d\n", peer->m_id); + Misbehaving(*peer, 100, "mutated block"); + WITH_LOCK(cs_main, RemoveBlockRequest(pblock->GetHash(), peer->m_id)); + return; + } + bool forceProcessing = false; const uint256 hash(pblock->GetHash()); bool min_pow_checked = false; @@ -4644,7 +4655,6 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type, mapBlockSource.emplace(hash, std::make_pair(pfrom.GetId(), true)); // Check work on this block against our anti-dos thresholds. - const CBlockIndex* prev_block = m_chainman.m_blockman.LookupBlockIndex(pblock->hashPrevBlock); if (prev_block && prev_block->nChainWork + CalculateHeadersWork({pblock->GetBlockHeader()}) >= GetAntiDoSWorkThreshold()) { min_pow_checked = true; } |