eth/tracers: add canonical hash check in API.blockByHash

OffchainLabs · Mar 6, 2024 · 4f76df8 · 4f76df8
1 parent 086bfcc
commit 4f76df8
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/eth/tracers/api.go b/eth/tracers/api.go
@@ -128,6 +128,15 @@ func (api *API) blockByHash(ctx context.Context, hash common.Hash) (*types.Block
 	if block == nil {
 		return nil, fmt.Errorf("block %s not found", hash.Hex())
 	}
+
+	number := block.NumberU64()
+	canonical := rawdb.ReadCanonicalHash(api.backend.ChainDb(), number)
+	if canonical == (common.Hash{}) {
+		return nil, fmt.Errorf("canonical hash for block %s not found", hash.Hex())
+	}
+	if hash.Cmp(canonical) != 0 {
+		return nil, fmt.Errorf("canonical hash doesn't match requested hash, hash %s, canonical %s, block #%d", hash.Hex(), canonical.Hex(), number)
+	}
 	return block, nil
 }