Mirror/seaweedfs - seaweedfs - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Chris Lu	0abf70061b	S3 API: Fix SSE-S3 decryption on object download (#7366 ) * S3 API: Fix SSE-S3 decryption on object download Fixes #7363 This commit adds missing SSE-S3 decryption support when downloading objects from SSE-S3 encrypted buckets. Previously, SSE-S3 encrypted objects were returned in their encrypted form, causing data corruption and hash mismatches. Changes: - Updated detectPrimarySSEType() to detect SSE-S3 encrypted objects by examining chunk metadata and distinguishing SSE-S3 from SSE-KMS - Added SSE-S3 handling in handleSSEResponse() to route to new handler - Implemented handleSSES3Response() for both single-part and multipart SSE-S3 encrypted objects with proper decryption - Implemented createMultipartSSES3DecryptedReader() for multipart objects with per-chunk decryption using stored IVs - Updated addSSEHeadersToResponse() to include SSE-S3 response headers The fix follows the existing SSE-C and SSE-KMS patterns, using the envelope encryption architecture where each object's DEK is encrypted with the KEK stored in the filer. * Add comprehensive tests for SSE-S3 decryption - TestSSES3EncryptionDecryption: basic encryption/decryption - TestSSES3IsRequestInternal: request detection - TestSSES3MetadataSerialization: metadata serialization/deserialization - TestDetectPrimarySSETypeS3: SSE type detection for various scenarios - TestAddSSES3HeadersToResponse: response header validation - TestSSES3EncryptionWithBaseIV: multipart encryption with base IV - TestSSES3WrongKeyDecryption: wrong key error handling - TestSSES3KeyGeneration: key generation and uniqueness - TestSSES3VariousSizes: encryption/decryption with various data sizes - TestSSES3ResponseHeaders: response header correctness - TestSSES3IsEncryptedInternal: metadata-based encryption detection - TestSSES3InvalidMetadataDeserialization: error handling for invalid metadata - TestGetSSES3Headers: header generation - TestProcessSSES3Request: request processing - TestGetSSES3KeyFromMetadata: key extraction from metadata - TestSSES3EnvelopeEncryption: envelope encryption correctness - TestValidateSSES3Key: key validation All tests pass successfully, providing comprehensive coverage for the SSE-S3 decryption fix. * Address PR review comments 1. Fix resource leak in createMultipartSSES3DecryptedReader: - Wrap decrypted reader with closer to properly release resources - Ensure underlying chunkReader is closed when done 2. Handle mixed-encryption objects correctly: - Check chunk encryption type before attempting decryption - Pass through non-SSE-S3 chunks unmodified - Log encryption type for debugging 3. Improve SSE type detection logic: - Add explicit case for aws:kms algorithm - Handle unknown algorithms gracefully - Better documentation for tie-breaking precedence 4. Document tie-breaking behavior: - Clarify that mixed encryption indicates potential corruption - Explicit precedence order: SSE-C > SSE-KMS > SSE-S3 These changes address high-severity resource management issues and improve robustness when handling edge cases and mixed-encryption scenarios. * Fix IV retrieval for small/inline SSE-S3 encrypted files Critical bug fix: The previous implementation only looked for the IV in chunk metadata, which would fail for small files stored inline (without chunks). Changes: - Check object-level metadata (sseS3Key.IV) first for inline files - Fallback to first chunk metadata only if object-level IV not found - Improved error message to indicate both locations were checked This ensures small SSE-S3 encrypted files (stored inline in entry.Content) can be properly decrypted, as their IV is stored in the object-level SeaweedFSSSES3Key metadata rather than in chunk metadata. Fixes the high-severity issue identified in PR review. * Clean up unused SSE metadata helper functions Remove legacy SSE metadata helper functions that were never fully implemented or used: Removed unused functions: - StoreSSECMetadata() / GetSSECMetadata() - StoreSSEKMSMetadata() / GetSSEKMSMetadata() - StoreSSES3Metadata() / GetSSES3Metadata() - IsSSEEncrypted() - GetSSEAlgorithm() Removed unused constants: - MetaSSEAlgorithm - MetaSSECKeyMD5 - MetaSSEKMSKeyID - MetaSSEKMSEncryptedKey - MetaSSEKMSContext - MetaSSES3KeyID These functions were from an earlier design where IV and other metadata would be stored in common entry.Extended keys. The actual implementations use type-specific serialization: - SSE-C: Uses StoreIVInMetadata()/GetIVFromMetadata() directly for IV - SSE-KMS: Serializes entire SSEKMSKey structure as JSON (includes IV) - SSE-S3: Serializes entire SSES3Key structure as JSON (includes IV) This follows Option A: SSE-S3 uses envelope encryption pattern like SSE-KMS, where IV is stored within the serialized key metadata rather than in a separate metadata field. Kept functions still in use: - StoreIVInMetadata() - Used by SSE-C - GetIVFromMetadata() - Used by SSE-C and streaming copy - MetaSSEIV constant - Used by SSE-C All tests pass after cleanup. * Rename SSE metadata functions to clarify SSE-C specific usage Renamed functions and constants to explicitly indicate they are SSE-C specific, improving code clarity: Renamed: - MetaSSEIV → MetaSSECIV - StoreIVInMetadata() → StoreSSECIVInMetadata() - GetIVFromMetadata() → GetSSECIVFromMetadata() Updated all usages across: - s3api_key_rotation.go - s3api_streaming_copy.go - s3api_object_handlers_copy.go - s3_sse_copy_test.go - s3_sse_test_utils_test.go Rationale: These functions are exclusively used by SSE-C for storing/retrieving the IV in entry.Extended metadata. SSE-KMS and SSE-S3 use different approaches (IV stored in serialized key structures), so the generic names were misleading. The new names make it clear these are part of the SSE-C implementation. All tests pass. * Add integration tests for SSE-S3 end-to-end encryption/decryption These integration tests cover the complete encrypt->store->decrypt cycle that was missing from the original test suite. They would have caught the IV retrieval bug for inline files. Tests added: - TestSSES3EndToEndSmallFile: Tests inline files (10, 50, 256 bytes) * Specifically tests the critical IV retrieval path for inline files * This test explicitly checks the bug we fixed where inline files couldn't retrieve their IV from object-level metadata - TestSSES3EndToEndChunkedFile: Tests multipart encrypted files * Verifies per-chunk metadata serialization/deserialization * Tests that each chunk can be independently decrypted with its own IV - TestSSES3EndToEndWithDetectPrimaryType: Tests type detection * Verifies inline vs chunked SSE-S3 detection * Ensures SSE-S3 is distinguished from SSE-KMS Note: Full HTTP handler tests (PUT -> GET through actual handlers) would require a complete mock server with filer connections, which is complex. These tests focus on the critical decrypt path and data flow. Why these tests are important: - Unit tests alone don't catch integration issues - The IV retrieval bug existed because there was no end-to-end test - These tests simulate the actual storage/retrieval flow - They verify the complete encryption architecture works correctly All tests pass. * Fix TestValidateSSES3Key expectations to match actual implementation The ValidateSSES3Key function only validates that the key struct is not nil, but doesn't validate the Key field contents or size. The test was expecting validation that doesn't exist. Updated test cases: - Nil key struct → should error (correct) - Valid key → should not error (correct) - Invalid key size → should not error (validation doesn't check this) - Nil key bytes → should not error (validation doesn't check this) Added comments to clarify what the current validation actually checks. This matches the behavior of ValidateSSEKMSKey and ValidateSSECKey which also only check for nil struct, not field contents. All SSE tests now pass. * Improve ValidateSSES3Key to properly validate key contents Enhanced the validation function from only checking nil struct to comprehensive validation of all key fields: Validations added: 1. Key bytes not nil 2. Key size exactly 32 bytes (SSES3KeySize) 3. Algorithm must be "AES256" (SSES3Algorithm) 4. Key ID must not be empty 5. IV length must be 16 bytes if set (optional - set during encryption) Test improvements (10 test cases): - Nil key struct - Valid key without IV - Valid key with IV - Invalid key size (too small) - Invalid key size (too large) - Nil key bytes - Empty key ID - Invalid algorithm - Invalid IV length - Empty IV (allowed - set during encryption) This matches the robustness of SSE-C and SSE-KMS validation and will catch configuration errors early rather than failing during encryption/decryption. All SSE tests pass. * Replace custom string helper functions with strings.Contains Address Gemini Code Assist review feedback: - Remove custom contains() and findSubstring() helper functions - Use standard library strings.Contains() instead - Add strings import This makes the code more idiomatic and easier to maintain by using the standard library instead of reimplementing functionality. Changes: - Added "strings" to imports - Replaced contains(err.Error(), tc.errorMsg) with strings.Contains(err.Error(), tc.errorMsg) - Removed 15 lines of custom helper code All tests pass. * filer fix reading and writing SSE-S3 headers * filter out seaweedfs internal headers * Update weed/s3api/s3api_object_handlers.go Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update weed/s3api/s3_validation_utils.go Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update s3api_streaming_copy.go * remove fallback * remove redundant check * refactor * remove extra object fetching * in case object is not found * Correct Version Entry for SSE Routing * Proper Error Handling for SSE Entry Fetching * Eliminated All Redundant Lookups * Removed brittle “exactly 5 successes/failures” assertions. Added invariant checks total recorded attempts equals request count, successes never exceed capacity, failures cover remaining attempts, final AvailableSpace matches capacity - successes. * refactor * fix test * Fixed Broken Fallback Logic * refactor * Better Error for Encryption Type Mismatch * refactor --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>	4 months ago
chrislu	cb9a662e20	Update volume_growth_reservation_test.go	4 months ago
chrislu	30e8133524	Update volume_growth_reservation_test.go	4 months ago
Chris Lu	f7bd75ef3b	S3: Avoid in-memory map concurrent writes in SSE-S3 key manager (#7358 ) * Fix concurrent map writes in SSE-S3 key manager This commit fixes issue #7352 where parallel uploads to SSE-S3 enabled buckets were causing 'fatal error: concurrent map writes' crashes. The SSES3KeyManager struct had an unsynchronized map that was being accessed from multiple goroutines during concurrent PUT operations. Changes: - Added sync.RWMutex to SSES3KeyManager struct - Protected StoreKey() with write lock - Protected GetKey() with read lock - Updated GetOrCreateKey() with proper read/write locking pattern including double-check to prevent race conditions All existing SSE tests pass successfully. Fixes #7352 * Improve SSE-S3 key manager with envelope encryption Replace in-memory key storage with envelope encryption using a super key (KEK). Instead of storing DEKs in a map, the key manager now: - Uses a randomly generated 256-bit super key (KEK) - Encrypts each DEK with the super key using AES-GCM - Stores the encrypted DEK in object metadata - Decrypts the DEK on-demand when reading objects Benefits: - Eliminates unbounded memory growth from caching DEKs - Provides better security with authenticated encryption (AES-GCM) - Follows envelope encryption best practices (similar to AWS KMS) - No need for mutex-protected map lookups on reads - Each object's encrypted DEK is self-contained in its metadata This approach matches the design pattern used in the local KMS provider and is more suitable for production use. * Persist SSE-S3 KEK in filer for multi-server support Store the SSE-S3 super key (KEK) in the filer at /.seaweedfs/s3/kek instead of generating it per-server. This ensures: 1. Multi-server consistency: All S3 API servers use the same KEK 2. Persistence across restarts: KEK survives server restarts 3. Centralized management: KEK stored in filer, accessible to all servers 4. Automatic initialization: KEK is created on first startup if it doesn't exist The KEK is: - Stored as hex-encoded bytes in filer - Protected with file mode 0600 (read/write for owner only) - Located in /.seaweedfs/s3/ directory (mode 0700) - Loaded on S3 API server startup - Reused across all S3 API server instances This matches the architecture of centralized configuration in SeaweedFS and enables proper SSE-S3 support in multi-server deployments. * Change KEK storage location to /etc/s3/kek Move SSE-S3 KEK from /.seaweedfs/s3/kek to /etc/s3/kek for better organization and consistency with other SeaweedFS configuration files. The /etc directory is the standard location for configuration files in SeaweedFS. * use global sse-se key manager when copying * Update volume_growth_reservation_test.go * Rename KEK file to sse_kek for clarity Changed /etc/s3/kek to /etc/s3/sse_kek to make it clear this key is specifically for SSE-S3 encryption, not for other KMS purposes. This improves clarity and avoids potential confusion with the separate KMS provider system used for SSE-KMS. * Use constants for SSE-S3 KEK directory and file name Refactored to use named constants instead of string literals: - SSES3KEKDirectory = "/etc/s3" - SSES3KEKParentDir = "/etc" - SSES3KEKDirName = "s3" - SSES3KEKFileName = "sse_kek" This improves maintainability and makes it easier to change the storage location if needed in the future. * Address PR review: Improve error handling and robustness Addresses review comments from https://github.com/seaweedfs/seaweedfs/pull/7358#pullrequestreview-3367476264 Critical fixes: 1. Distinguish between 'not found' and other errors when loading KEK - Only generate new KEK if ErrNotFound - Fail fast on connectivity/permission errors to prevent data loss - Prevents creating new KEK that would make existing data undecryptable 2. Make SSE-S3 initialization failure fatal - Return error instead of warning when initialization fails - Prevents server from running in broken state 3. Improve directory creation error handling - Only ignore 'file exists' errors - Fail on permission/connectivity errors These changes ensure the SSE-S3 key manager is robust against transient errors and prevents accidental data loss. * Fix KEK path conflict with /etc/s3 file Changed KEK storage from /etc/s3/sse_kek to /etc/seaweedfs/s3_sse_kek to avoid conflict with the circuit breaker config at /etc/s3. The /etc/s3 path is used by CircuitBreakerConfigDir and may exist as a file (circuit_breaker.json), causing the error: 'CreateEntry /etc/s3/sse_kek: /etc/s3 should be a directory' New KEK location: /etc/seaweedfs/s3_sse_kek This uses the seaweedfs subdirectory which is more appropriate for internal SeaweedFS configuration files. Fixes startup failure when /etc/s3 exists as a file. * Revert KEK path back to /etc/s3/sse_kek Changed back from /etc/seaweedfs/s3_sse_kek to /etc/s3/sse_kek as requested. The /etc/s3 directory will be created properly when it doesn't exist. * Fix directory creation with proper ModeDir flag Set FileMode to uint32(0755 \| os.ModeDir) when creating /etc/s3 directory to ensure it's created as a directory, not a file. Without the os.ModeDir flag, the entry was being created as a file, which caused the error 'CreateEntry: /etc/s3 is a file' when trying to create the KEK file inside it. Uses 0755 permissions (rwxr-xr-x) for the directory and adds os import for os.ModeDir constant.	4 months ago
chrislu	c547cd7c18	fix tests	4 months ago
Chris Lu	7acebf11ea	Master: volume assignment concurrency (#7159 ) * volume assginment concurrency * accurate tests * ensure uniqness * reserve atomically * address comments * atomic * ReserveOneVolumeForReservation * duplicated * Update weed/topology/node.go Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com> * Update weed/topology/node.go Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com> * atomic counter * dedup * select the appropriate functions based on the useReservations flag --------- Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>	6 months ago