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Merge pull request #6124

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21d4c216 blockchain: error out if the builtin hashes data size is wrong (moneromooo-monero)
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Alexander Blair 2020-01-16 17:31:35 -08:00
commit c4abfbfbe7
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1 changed files with 6 additions and 1 deletions
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7
src/cryptonote_core/blockchain.cpp
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@ -5079,7 +5079,12 @@ void Blockchain::load_compiled_in_block_hashes(const GetCheckpointsCallback& get
return; return;
} }
const size_t size_needed = 4 + nblocks * (sizeof(crypto::hash) * 2); const size_t size_needed = 4 + nblocks * (sizeof(crypto::hash) * 2);
if(nblocks > 0 && nblocks > (m_db->height() + HASH_OF_HASHES_STEP - 1) / HASH_OF_HASHES_STEP && checkpoints.size() >= size_needed) if(checkpoints.size() != size_needed)
{
MERROR("Failed to load hashes - unexpected data size");
return;
}
else if(nblocks > 0 && nblocks > (m_db->height() + HASH_OF_HASHES_STEP - 1) / HASH_OF_HASHES_STEP)
{ {
p += sizeof(uint32_t); p += sizeof(uint32_t);
m_blocks_hash_of_hashes.reserve(nblocks); m_blocks_hash_of_hashes.reserve(nblocks);