Commit Graph
4 Commits
Author SHA1 Message Date
Chris LuandDevin 56fbc3deb5 s3api: align S3/IAM error responses with AWS (#11632)
* s3err: add InvalidArgument and AuthorizationHeaderMalformed codes

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* s3api: answer unrecognized bucket PUT sub-resources with 501

A PUT on a bucket carrying an unrecognized query (logging, metrics,
intelligent-tiering, ...) fell through to the bare CreateBucket route
and returned BucketAlreadyOwnedByYou or re-created the bucket. AWS
answers these with NotImplemented.

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* s3api: reject malformed copy-source and multipart PUT parameters

A malformed X-Amz-Copy-Source or a non-numeric partNumber fell through
to the plain PutObject route and stored the body as a regular object.
Answer them with InvalidArgument-class errors instead of writing data.

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* s3api: verify x-amz-content-sha256 against the streamed body

A PUT carrying a hex or base64 payload hash now streams through a
verifier that reports a mismatch once the stream is exhausted, instead
of storing an object that does not match its declared hash. The error
is deferred so intermediate reads that drop (n>0, err) results cannot
silently swallow it. Sentinel values (unsigned/streaming payloads)
remain exempt and malformed values fail fast.

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* s3api: map truncated SigV4 headers to the error for the missing field

AWS answers an Authorization header missing Credential= with
InvalidArgument and one missing or malformed Signature= with
AuthorizationHeaderMalformed, instead of a generic MissingFields.

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* s3api: answer IAM/STS failures in the query-protocol envelope

Embedded IAM and STS routes now report authentication, form-parse and
authorization failures with the IAM ErrorResponse body instead of the
S3 Error envelope, so IAM SDK clients can parse them. Requests signed
for s3 keep the S3 envelope, keyed off the credential scope.

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* s3api: return 403 AccessDenied when the request has no Date

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* s3api: answer throttling rejections as SlowDown

ErrTooManyRequest and ErrRequestBytesExceed reported made-up codes;
AWS serves these throttling rejections as SlowDown.

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* s3api: reject versionId requests on buckets that never had versioning

GET, HEAD and DELETE carrying a non-empty versionId on an unversioned
bucket now fail with InvalidArgument instead of being answered as a
plain object request.

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* s3api: answer DeleteObjects over 1000 keys with MalformedXML

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* s3api: InvalidArgument for non-numeric or out-of-range part numbers

partNumber=abc, 0 and >10000 all resolve to InvalidArgument, matching
AWS, instead of InvalidPart.

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* iam: correct LimitExceeded, InvalidAction and ServiceFailure mappings

LimitExceeded is a conflict (409), an unknown Action is InvalidAction
(404) rather than NotImplemented, and internal failures report the IAM
receiver fault type. Applies to both the embedded IAM endpoint and the
standalone iamapi server.

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* iam: refuse DeleteUser while access keys remain

Deleting a user with live credentials orphaned its access keys; AWS
answers DeleteConflict until they are removed first.

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* test/s3: add S3/IAM error-response compatibility harness

* s3: return InvalidArgument for malformed x-amz-content-sha256

A header value that decodes to neither 32-byte hex nor base64 is a
malformed argument, not a hash mismatch.

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* test: stop spawned mini when readiness times out

A slow-starting server otherwise survives the failure path and keeps
the S3 port occupied for the next run.

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* test: register atexit cleanup before setup

A failed setup previously skipped cleanup, leaking the bucket and IAM
user on persistent servers.

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* s3api: reject unrouted subresources on the DELETE bucket catch-all

PutBucketHandler gained the same guard when the route-level check moved
into the handlers; DeleteBucketHandler was missed, so an authorized
DELETE /bucket?logging could delete the bucket instead of answering
NotImplemented.

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* test: tolerate unset fixture variables in cleanup and cover DELETE ?logging

Cleanup now runs its IAM/multipart steps only when setup reached them, so
an early setup failure still removes the bucket. Added a DELETE
bucket-subresource case asserting NotImplemented and bucket survival.

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* test: fail a case when its side-effect check reports a regression

A non-empty check note now fails the case, so a deleted bucket or an
object created by a malformed request cannot slip through behind a
passing status check.

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---------

Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
2026-10-07 21:02:38 +08:00
Chris Lu 0d8588e3ae S3: Implement IAM defaults and STS signing key fallback (#8348)
* S3: Implement IAM defaults and STS signing key fallback logic

* S3: Refactor startup order to init SSE-S3 key manager before IAM

* S3: Derive STS signing key from KEK using HKDF for security isolation

* S3: Document STS signing key fallback in security.toml

* fix(s3api): refine anonymous access logic and secure-by-default behavior

- Initialize anonymous identity by default in `NewIdentityAccessManagement` to prevent nil pointer exceptions.
- Ensure `ReplaceS3ApiConfiguration` preserves the anonymous identity if not present in the new configuration.
- Update `NewIdentityAccessManagement` signature to accept `filerClient`.
- In legacy mode (no policy engine), anonymous defaults to Deny (no actions), preserving secure-by-default behavior.
- Use specific `LookupAnonymous` method instead of generic map lookup.
- Update tests to accommodate signature changes and verify improved anonymous handling.

* feat(s3api): make IAM configuration optional

- Start S3 API server without a configuration file if `EnableIam` option is set.
- Default to `Allow` effect for policy engine when no configuration is provided (Zero-Config mode).
- Handle empty configuration path gracefully in `loadIAMManagerFromConfig`.
- Add integration test `iam_optional_test.go` to verify empty config behavior.

* fix(iamapi): fix signature mismatch in NewIdentityAccessManagementWithStore

* fix(iamapi): properly initialize FilerClient instead of passing nil

* fix(iamapi): properly initialize filer client for IAM management

- Instead of passing `nil`, construct a `wdclient.FilerClient` using the provided `Filers` addresses.
- Ensure `NewIdentityAccessManagementWithStore` receives a valid `filerClient` to avoid potential nil pointer dereferences or limited functionality.

* clean: remove dead code in s3api_server.go

* refactor(s3api): improve IAM initialization, safety and anonymous access security

* fix(s3api): ensure IAM config loads from filer after client init

* fix(s3): resolve test failures in integration, CORS, and tagging tests

- Fix CORS tests by providing explicit anonymous permissions config
- Fix S3 integration tests by setting admin credentials in init
- Align tagging test credentials in CI with IAM defaults
- Added goroutine to retry IAM config load in iamapi server

* fix(s3): allow anonymous access to health targets and S3 Tables when identities are present

* fix(ci): use /healthz for Caddy health check in awscli tests

* iam, s3api: expose DefaultAllow from IAM and Policy Engine

This allows checking the global "Open by Default" configuration from
other components like S3 Tables.

* s3api/s3tables: support DefaultAllow in permission logic and handler

Updated CheckPermissionWithContext to respect the DefaultAllow flag
in PolicyContext. This enables "Open by Default" behavior for
unauthenticated access in zero-config environments. Added a targeted
unit test to verify the logic.

* s3api/s3tables: propagate DefaultAllow through handlers

Propagated the DefaultAllow flag to individual handlers for
namespaces, buckets, tables, policies, and tagging. This ensures
consistent "Open by Default" behavior across all S3 Tables API
endpoints.

* s3api: wire up DefaultAllow for S3 Tables API initialization

Updated registerS3TablesRoutes to query the global IAM configuration
and set the DefaultAllow flag on the S3 Tables API server. This
completes the end-to-end propagation required for anonymous access in
zero-config environments. Added a SetDefaultAllow method to
S3TablesApiServer to facilitate this.

* s3api: fix tests by adding DefaultAllow to mock IAM integrations

The IAMIntegration interface was updated to include DefaultAllow(),
breaking several mock implementations in tests. This commit fixes
the build errors by adding the missing method to the mocks.

* env

* ensure ports

* env

* env

* fix default allow

* add one more test using non-anonymous user

* debug

* add more debug

* less logs
2026-02-16 13:59:13 -08:00
Chris Lu 1db7c2b8aa Add credential storage (#6938)
* add credential store interface

* load credential.toml

* lint

* create credentialManager with explicit store type

* add type name

* InitializeCredentialManager

* remove unused functions

* fix missing import

* fix import

* fix nil configuration
2025-07-02 18:03:17 -07:00
Chris Lu a72c442945 Fix chunked data reading if iam not enabled (#6898)
* fix chunked data reading if iam not enabled

* add unit test
2025-06-19 22:58:10 -07:00