* fix(s3api): ensure static config file takes precedence over dynamic updates
When a static S3 configuration file is provided, avoid overwriting
the configuration from dynamic filer updates. This ensures the
documented "Highest Priority" for the configuration file is respected.
* refactor(s3api): implement merge-based static config with immutable identities
Static identities from config file are now immutable and protected from
dynamic updates. Dynamic identities (from admin panel) can be added and
updated without affecting static entries.
- Track identity names loaded from static config file
- Implement merge logic that preserves static identities
- Allow dynamic identities to be added or updated
- Remove blanket block on config file updates
* fix: address PR review comments for static config merge logic
Critical Bugs:
- Fix existingIdx always-false condition causing duplicate identities
- Fix race condition in static config initialization (move useStaticConfig inside mutex)
Security & Robustness:
- Add nil identity check in VerifyActionPermission to fail closed
- Mask access keys in STS validation logs to avoid exposing credentials
- Add nil guard for s3a.iam in subscription handler
Test Improvements:
- Add authCalled tracking to MockIAMIntegration for explicit verification
- Lower log level for static config messages to reduce noise
* fix: prevent duplicates and race conditions in merge logic
Data Integrity:
- Prevent service account credential duplicates on repeated merges
- Clean up stale accessKeyIdent entries when replacing identities
- Check existing credentials before appending
Concurrency Safety:
- Add synchronization to IsStaticConfig method
Test Improvements:
- Add mux route vars for proper GetBucketAndObject extraction
- Add STS session token header to trigger correct auth path
* Fix STS authorization in streaming/chunked uploads
During streaming/chunked uploads (SigV4 streaming), authorization happens
twice:
1. Initial authorization in authRequestWithAuthType() - works correctly
2. Second authorization in verifyV4Signature() - was failing for STS
The issue was that verifyV4Signature() only used identity.canDo() for
permission checks, which always denies STS identities (they have empty
Actions). This bypassed IAM authorization completely.
This commit makes verifyV4Signature() IAM-aware by adding the same
fallback logic used in authRequestWithAuthType():
- Traditional identities (with Actions) use legacy canDo() check
- STS/JWT identities (empty Actions) fall back to IAM authorization
Fixes: https://github.com/seaweedfs/seaweedfs/pull/7986#issuecomment-3723196038
* Add comprehensive unit tests for STS authorization in streaming uploads
Created test suite to verify that verifyV4Signature properly handles STS
identities by falling back to IAM authorization when shouldCheckPermissions
is true.
Tests cover:
- STS identities with IAM integration (allow and deny cases)
- STS identities without IAM integration (should deny)
- Traditional identities with Actions (canDo check)
- Permission check bypass when shouldCheckPermissions=false
- Specific streaming upload scenario from bug report
- Action determination based on HTTP method
All tests pass successfully.
* Refactor authorization logic to avoid duplication
Centralized the authorization logic into IdentityAccessManagement.VerifyActionPermission.
Updated auth_signature_v4.go and auth_credentials.go to use this new helper.
Updated tests to clarify that they mirror the centralized logic.
* Refactor tests to use VerifyActionPermission directly
Introduced IAMIntegration interface to facilitate mocking of internal IAM integration logic.
Updated IdentityAccessManagement to use the interface.
Updated tests to directy call VerifyActionPermission using a mocked IAM integration, eliminating duplicated logic in tests.
* fix(s3api): ensure static config file takes precedence and refactor tests
- Track if configuration was loaded from a static file using `useStaticConfig`.
- Ignore filer-based IAM updates when a static configuration is in use to respect "Highest Priority" rule.
- Refactor `TestVerifyV4SignatureWithSTSIdentity` to use `VerifyActionPermission` directly.
- Fix typed nil interface panic in authorization test.
