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Chris LuandGitHub
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* fix(s3api): backfill missing per-chunk SSE-S3 metadata at completion When a part of an SSE-S3 multipart upload lands with SseType=NONE on its chunks (e.g. a transient failure to apply SSE-S3 setup in PutObjectPart), the completed object inherits NONE-tagged chunks and detectPrimarySSEType then misses the chunked SSE-S3 encryption. The read path falls through to the unencrypted serve and GET returns ciphertext, producing the SHA mismatch reported in #8908. Recover at completion using the base IV and key data the upload directory recorded at CreateMultipartUpload: - extractMultipartSSES3Info validates upload-entry metadata up front and hard-fails completion if the base IV or key data are malformed; serializing chunk metadata we then could not decrypt is worse than rejecting the upload. - completedMultipartChunk re-derives a per-chunk IV from baseIV + chunk.Offset (matching what putToFiler would have written) and serializes per-chunk SSE-S3 metadata when the chunk has no tag. Existing per-chunk metadata is left alone; we cannot recover an already-derived IV from the upload-entry alone. The IV formula intentionally has no partNumber term: putToFiler hardcodes partOffset=0 when it calls handleSSES3MultipartEncryption for every part, so each chunk's encryption IV is calculateIVWithOffset(baseIV, chunk.Offset_part_local). PartOffsetMultiplier is defined in s3_constants but is not consumed by the encryption path. Adopting (partNumber-1)*PartOffsetMultiplier + chunk.Offset would produce IVs that fail to decrypt the bytes on disk - a stronger failure mode than the bug being fixed. Tests pin this: - TestCompletedMultipartChunkBackfilledIVDecryptsActualCiphertext runs the round trip across the encryption boundary: encrypt parts with CreateSSES3EncryptedReaderWithBaseIV (the call putToFiler uses), drop chunk metadata to reproduce #8908, backfill, decrypt with backfilled IV, assert plaintext intact. - TestCompletedMultipartChunkRejectsPartNumberMultiplierFormula constructs the IV the partNumber formula would produce and shows it does not decrypt the actual ciphertext. This commit covers the chunk-level recovery only. The companion fix for the object-level Extended attributes (SeaweedFSSSES3Key / X-Amz-Server-Side-Encryption) follows separately. * fix(s3api): backfill canonical SSE-S3 attributes onto multipart object The previous commit ensures every chunk of an SSE-S3 multipart upload carries SseType=SSE_S3 with a per-chunk IV, so the multipart-direct read path can decrypt. The completed object's Extended map can still miss the canonical pair detectPrimarySSEType and IsSSES3EncryptedInternal look at: - X-Amz-Server-Side-Encryption (the AmzServerSideEncryption header detectPrimarySSEType reads on inline / small-object reads) - x-seaweedfs-sse-s3-key (SeaweedFSSSES3Key, required by IsSSES3EncryptedInternal and by the read-path key lookup) When a part of the upload was written by a path that did not set those (the same #8908 race that produced the NONE chunks), copySSEHeadersFromFirstPart finds nothing to copy and the final entry ends up with only the multipart-init keys (SeaweedFSSSES3Encryption / BaseIV / KeyData). The read path then mis-detects the object as unencrypted. applyMultipartSSES3HeadersFromUploadEntry writes the canonical pair from the multipart-init metadata in all three completion paths (versioned, suspended, non-versioned), only when the keys are missing so a healthy first part still wins. extractMultipartSSES3Info already ran in prepareMultipartCompletionState, so the data is reused without re-decoding. Tests: TestApplyMultipartSSES3HeadersFromUploadEntry covers backfill, do-not-clobber, and nil-info no-op cases. * fix(s3api): drop double IV adjustment in SSE-KMS chunk view decrypt decryptSSEKMSChunkView was pre-adjusting the SSE-KMS chunk IV (calculateIVWithOffset(baseIV, ChunkOffset)) and then handing the adjusted IV to CreateSSEKMSDecryptedReader, which itself runs calculateIVWithOffset(IV, ChunkOffset) on whatever it receives. The offset was being applied twice for any chunk with a non-zero ChunkOffset, corrupting the keystream for range reads that cross multipart chunk boundaries. Pass the raw SSE-KMS key (with base IV and the original ChunkOffset field) into CreateSSEKMSDecryptedReader so the offset is applied exactly once, and remove the now-dead intra-block skip that was compensating for the double adjustment. Add an anti-test inside TestSSEKMSDecryptChunkView_RequiresOffsetAdjustment that decrypts the same ciphertext with a deliberately double-adjusted IV and asserts the output is corrupted, so any regression that re-introduces the double application fails the unit test. * test(s3): cover multipart SSE across chunk-spanning parts and ranges Adds an integration subtest "Multipart Parts Larger Than Internal Chunks Across SSE Types" to TestSSEMultipartUploadIntegration that exercises the end-to-end S3 path for the bugs fixed in this branch: - Two-part multipart upload with each part larger than the 8MB internal SeaweedFS chunk, so each part itself spans multiple underlying chunks. - Subtests for SSE-C, SSE-KMS, explicit SSE-S3, and bucket-default SSE-S3 - the four paths multipart parts can take through the SSE pipeline. - Each subtest does a full GET (verifying every byte and the response Content-Length / SSE response headers) plus a 129-byte range read straddling the 8MB internal chunk boundary, which is the path that produced the SSE-KMS double-IV corruption (fix in the previous commit) and the SSE-S3 chunk-tag loss (fix in the earlier commits). Factored the request shape behind multipartSSEOptions / uploadAndVerifyMultipartSSEObject so all four SSE flavors share the same upload+verify code; only the SSE-specific input/output configuration differs per subtest. * test(s3): abort orphan multipart uploads on test failure Address coderabbit nitpick on uploadAndVerifyMultipartSSEObject. The helper used require.NoError after CreateMultipartUpload, UploadPart and CompleteMultipartUpload, so a failure in any of those (or in the later GET / range read on a still-incomplete upload) called t.Fatal without aborting the in-flight MPU, leaving an orphan upload in the bucket. Harmless in CI where the data dir is wiped on shutdown, but a real annoyance when iterating locally and a textbook AWS S3 caveat in production. Register a t.Cleanup that calls AbortMultipartUpload unless a "completed" flag was set right after a successful CompleteMultipartUpload. Use context.Background for the abort call since the parent ctx may already be cancelled at cleanup time, and t.Logf the abort error rather than failing the test so the original failure remains visible in the run output.