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Verify chunk integrity on read

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Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
This commit is contained in:
Andrej Mickov
2026-05-16 10:11:25 +02:00
parent c3c9e3262f
commit 0f9b461e8e
2 changed files with 86 additions and 0 deletions
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7
storage/blob.go
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@@ -17,6 +17,8 @@ import (
const blobRoot = "blobs"
const maxChunkSize = 64 * 1024 * 1024
var ErrChunkIntegrity = errors.New("chunk integrity check failed")
type BlobStore struct {
dataRoot string
chunkSize int
@@ -185,6 +187,11 @@ func (bs *BlobStore) GetBlob(chunkID string) ([]byte, error) {
if err != nil {
return nil, err
}
chunkHash := sha256.Sum256(data)
actualChunkID := hex.EncodeToString(chunkHash[:])
if actualChunkID != chunkID {
return nil, fmt.Errorf("%w: expected %s, got %s", ErrChunkIntegrity, chunkID, actualChunkID)
}
size = int64(len(data))
success = true
return data, nil