Commit Graph

6 Commits

Author SHA1 Message Date
Chris Lu
ae9a943ef6 IAM: Add Service Account Support (#7744) (#7901)
* iam: add ServiceAccount protobuf schema

Add ServiceAccount message type to iam.proto with support for:
- Unique ID and parent user linkage
- Optional expiration timestamp
- Separate credentials (access key/secret)
- Action restrictions (subset of parent)
- Enable/disable status

This is the first step toward implementing issue #7744
(IAM Service Account Support).

* iam: add service account response types

Add IAM API response types for service account operations:
- ServiceAccountInfo struct for marshaling account details
- CreateServiceAccountResponse
- DeleteServiceAccountResponse
- ListServiceAccountsResponse
- GetServiceAccountResponse
- UpdateServiceAccountResponse

Also add type aliases in iamapi package for backwards compatibility.

Part of issue #7744 (IAM Service Account Support).

* iam: implement service account API handlers

Add CRUD operations for service accounts:
- CreateServiceAccount: Creates service account with ABIA key prefix
- DeleteServiceAccount: Removes service account and parent linkage
- ListServiceAccounts: Lists all or filtered by parent user
- GetServiceAccount: Retrieves service account details
- UpdateServiceAccount: Modifies status, description, expiration

Service accounts inherit parent user's actions by default and
support optional expiration timestamps.

Part of issue #7744 (IAM Service Account Support).

* sts: add AssumeRoleWithWebIdentity HTTP endpoint

Add STS API HTTP endpoint for AWS SDK compatibility:
- Create s3api_sts.go with HTTP handlers matching AWS STS spec
- Support AssumeRoleWithWebIdentity action with JWT token
- Return XML response with temporary credentials (AccessKeyId,
  SecretAccessKey, SessionToken) matching AWS format
- Register STS route at POST /?Action=AssumeRoleWithWebIdentity

This enables AWS SDKs (boto3, AWS CLI, etc.) to obtain temporary
S3 credentials using OIDC/JWT tokens.

Part of issue #7744 (IAM Service Account Support).

* test: add service account and STS integration tests

Add integration tests for new IAM features:

s3_service_account_test.go:
- TestServiceAccountLifecycle: Create, Get, List, Update, Delete
- TestServiceAccountValidation: Error handling for missing params

s3_sts_test.go:
- TestAssumeRoleWithWebIdentityValidation: Parameter validation
- TestAssumeRoleWithWebIdentityWithMockJWT: JWT token handling

Tests skip gracefully when SeaweedFS is not running or when IAM
features are not configured.

Part of issue #7744 (IAM Service Account Support).

* iam: address code review comments

- Add constants for service account ID and key lengths
- Use strconv.ParseInt instead of fmt.Sscanf for better error handling
- Allow clearing descriptions by checking key existence in url.Values
- Replace magic numbers (12, 20, 40) with named constants

Addresses review comments from gemini-code-assist[bot]

* test: add proper error handling in service account tests

Use require.NoError(t, err) for io.ReadAll and xml.Unmarshal
to prevent silent failures and ensure test reliability.

Addresses review comment from gemini-code-assist[bot]

* test: add proper error handling in STS tests

Use require.NoError(t, err) for io.ReadAll and xml.Unmarshal
to prevent silent failures and ensure test reliability.
Repeated this fix throughout the file.

Addresses review comment from gemini-code-assist[bot] in PR #7901.

* iam: address additional code review comments

- Specific error code mapping for STS service errors
- Distinguish between Sender and Receiver error types in STS responses
- Add nil checks for credentials in List/GetServiceAccount
- Validate expiration date is in the future
- Improve integration test error messages (include response body)
- Add credential verification step in service account tests

Addresses remaining review comments from gemini-code-assist[bot] across multiple files.

* iam: fix shared slice reference in service account creation

Copy parent's actions to create an independent slice for the service
account instead of sharing the underlying array. This prevents
unexpected mutations when the parent's actions are modified later.

Addresses review comment from coderabbitai[bot] in PR #7901.

* iam: remove duplicate unused constant

Removed redundant iamServiceAccountKeyPrefix as ServiceAccountKeyPrefix
is already defined and used.

Addresses remaining cleanup task.

* sts: document limitation of string-based error mapping

Added TODO comment explaining that the current string-based error
mapping approach is fragile and should be replaced with typed errors
from the STS service in a future refactoring.

This addresses the architectural concern raised in code review while
deferring the actual implementation to a separate PR to avoid scope
creep in the current service account feature addition.

* iam: fix remaining review issues

- Add future-date validation for expiration in UpdateServiceAccount
- Reorder tests so credential verification happens before deletion
- Fix compilation error by using correct JWT generation methods

Addresses final review comments from coderabbitai[bot].

* iam: fix service account access key length

The access key IDs were incorrectly generated with 24 characters
instead of the AWS-standard 20 characters. This was caused by
generating 20 random characters and then prepending the 4-character
ABIA prefix.

Fixed by subtracting the prefix length from AccessKeyLength, so the
final key is: ABIA (4 chars) + random (16 chars) = 20 chars total.

This ensures compatibility with S3 clients that validate key length.

* test: add comprehensive service account security tests

Added comprehensive integration tests for service account functionality:

- TestServiceAccountS3Access: Verify SA credentials work for S3 operations
- TestServiceAccountExpiration: Test expiration date validation and enforcement
- TestServiceAccountInheritedPermissions: Verify parent-child relationship
- TestServiceAccountAccessKeyFormat: Validate AWS-compatible key format (ABIA prefix, 20 char length)

These tests ensure SeaweedFS service accounts are compatible with AWS
conventions and provide robust security coverage.

* iam: remove unused UserAccessKeyPrefix constant

Code cleanup to remove unused constants.

* iam: remove unused iamCommonResponse type alias

Code cleanup to remove unused type aliases.

* iam: restore and use UserAccessKeyPrefix constant

Restored UserAccessKeyPrefix constant and updated s3api tests to use it
instead of hardcoded strings for better maintainability and consistency.

* test: improve error handling in service account security tests

Added explicit error checking for io.ReadAll and xml.Unmarshal in
TestServiceAccountExpiration to ensure failures are reported correctly and
cleanup is performed only when appropriate. Also added logging for failed
responses.

* test: use t.Cleanup for reliable resource cleanup

Replaced defer with t.Cleanup to ensure service account cleanup runs even
when require.NoError fails. Also switched from manual error checking to
require.NoError for more idiomatic testify usage.

* iam: add CreatedBy field and optimize identity lookups

- Added createdBy parameter to CreateServiceAccount to track who created each service account
- Extract creator identity from request context using GetIdentityNameFromContext
- Populate created_by field in ServiceAccount protobuf
- Added findIdentityByName helper function to optimize identity lookups
- Replaced nested loops with O(n) helper function calls in CreateServiceAccount and DeleteServiceAccount

This addresses code review feedback for better auditing and performance.

* iam: prevent user deletion when service accounts exist

Following AWS IAM behavior, prevent deletion of users that have active
service accounts. This ensures explicit cleanup and prevents orphaned
service account resources with invalid ParentUser references.

Users must delete all associated service accounts before deleting the
parent user, providing safer resource management.

* sts: enhance TODO with typed error implementation guidance

Updated TODO comment with detailed implementation approach for replacing
string-based error matching with typed errors using errors.Is(). This
provides a clear roadmap for a follow-up PR to improve error handling
robustness and maintainability.

* iam: add operational limits for service account creation

Added AWS IAM-compatible safeguards to prevent resource exhaustion:
- Maximum 100 service accounts per user (LimitExceededException)
- Maximum 1000 character description length (InvalidInputException)

These limits prevent accidental or malicious resource exhaustion while
not impacting legitimate use cases.

* iam: add missing operational limit constants

Added MaxServiceAccountsPerUser and MaxDescriptionLength constants that
were referenced in the previous commit but not defined.

* iam: enforce service account expiration during authentication

CRITICAL SECURITY FIX: Expired service account credentials were not being
rejected during authentication, allowing continued access after expiration.

Changes:
- Added Expiration field to Credential struct
- Populate expiration when loading service accounts from configuration
- Check expiration in all authentication paths (V2 and V4 signatures)
- Return ErrExpiredToken for expired credentials

This ensures expired service accounts are properly rejected at authentication
time, matching AWS IAM behavior and preventing unauthorized access.

* iam: fix error code for expired service account credentials

Use ErrAccessDenied instead of non-existent ErrExpiredToken for expired
service account credentials. This provides appropriate access denial for
expired credentials while maintaining AWS-compatible error responses.

* iam: fix remaining ErrExpiredToken references

Replace all remaining instances of non-existent ErrExpiredToken with
ErrAccessDenied for expired service account credentials.

* iam: apply AWS-standard key format to user access keys

Updated CreateAccessKey to generate AWS-standard 20-character access keys
with AKIA prefix for regular users, matching the format used for service
accounts. This ensures consistency across all access key types and full
AWS compatibility.

- Access keys: AKIA + 16 random chars = 20 total (was 21 chars, no prefix)
- Secret keys: 40 random chars (was 42, now matches AWS standard)
- Uses AccessKeyLength and UserAccessKeyPrefix constants

* sts: replace fragile string-based error matching with typed errors

Implemented robust error handling using typed errors and errors.Is() instead
of fragile strings.Contains() matching. This decouples the HTTP layer from
service implementation details and prevents errors from being miscategorized
if error messages change.

Changes:
- Added typed error variables to weed/iam/sts/constants.go:
  * ErrTypedTokenExpired
  * ErrTypedInvalidToken
  * ErrTypedInvalidIssuer
  * ErrTypedInvalidAudience
  * ErrTypedMissingClaims

- Updated STS service to wrap provider authentication errors with typed errors
- Replaced strings.Contains() with errors.Is() in HTTP layer for error checking
- Removed TODO comment as the improvement is now implemented

This makes error handling more maintainable and reliable.

* sts: eliminate all string-based error matching with provider-level typed errors

Completed the typed error implementation by adding provider-level typed errors
and updating provider implementations to return them. This eliminates ALL
fragile string matching throughout the entire error handling stack.

Changes:
- Added typed error definitions to weed/iam/providers/errors.go:
  * ErrProviderTokenExpired
  * ErrProviderInvalidToken
  * ErrProviderInvalidIssuer
  * ErrProviderInvalidAudience
  * ErrProviderMissingClaims

- Updated OIDC provider to wrap JWT validation errors with typed provider errors
- Replaced strings.Contains() with errors.Is() in STS service for error mapping
- Complete error chain: Provider -> STS -> HTTP layer, all using errors.Is()

This provides:
- Reliable error classification independent of error message content
- Type-safe error checking throughout the stack
- No order-dependent string matching
- Maintainable error handling that won't break with message changes

* oidc: use jwt.ErrTokenExpired instead of string matching

Replaced the last remaining string-based error check with the JWT library's
exported typed error. This makes the error detection independent of error
message content and more robust against library updates.

Changed from:
  strings.Contains(errMsg, "expired")
To:
  errors.Is(err, jwt.ErrTokenExpired)

This completes the elimination of ALL string-based error matching throughout
the entire authentication stack.

* iam: add description length validation to UpdateServiceAccount

Fixed inconsistency where UpdateServiceAccount didn't validate description
length against MaxDescriptionLength, allowing operational limits to be
bypassed during updates.

Now validates that updated descriptions don't exceed 1000 characters,
matching the validation in CreateServiceAccount.

* iam: refactor expiration check into helper method

Extracted duplicated credential expiration check logic into a helper method
to reduce code duplication and improve maintainability.

Added Credential.isCredentialExpired() method and replaced 5 instances of
inline expiration checks across auth_signature_v2.go and auth_signature_v4.go.

* iam: address critical Copilot security and consistency feedback

Fixed three critical issues identified by Copilot code review:

1. SECURITY: Prevent loading disabled service account credentials
   - Added check to skip disabled service accounts during credential loading
   - Disabled accounts can no longer authenticate

2. Add DurationSeconds validation for STS AssumeRoleWithWebIdentity
   - Enforce AWS-compatible range: 900-43200 seconds (15 min - 12 hours)
   - Returns proper error for out-of-range values

3. Fix expiration update consistency in UpdateServiceAccount
   - Added key existence check like Description field
   - Allows explicit clearing of expiration by setting to empty string
   - Distinguishes between "not updating" and "clearing expiration"

* sts: remove unused durationSecondsStr variable

Fixed build error from unused variable after refactoring duration parsing.

* iam: address remaining Copilot feedback and remove dead code

Completed remaining Copilot code review items:

1. Remove unused getPermission() method (dead code)
   - Method was defined but never called anywhere

2. Improve slice modification safety in DeleteServiceAccount
   - Replaced append-with-slice-operations with filter pattern
   - Avoids potential issues from mutating slice during iteration

3. Fix route registration order
   - Moved STS route registration BEFORE IAM route
   - Prevents IAM route from intercepting STS requests
   - More specific route (with query parameter) now registered first

* iam: improve expiration validation and test cleanup robustness

Addressed additional Copilot feedback:

1. Make expiration validation more explicit
   - Added explicit check for negative values
   - Added comment clarifying that 0 is allowed to clear expiration
   - Improves code readability and intent

2. Fix test cleanup order in s3_service_account_test.go
   - Track created service accounts in a slice
   - Delete all service accounts before deleting parent user
   - Prevents DeleteConflictException during cleanup
   - More robust cleanup even if test fails mid-execution

Note: s3_service_account_security_test.go already had correct cleanup
order due to LIFO defer execution.

* test: remove redundant variable assignments

Removed duplicate assignments of createdSAId, createdAccessKeyId, and
createdSecretAccessKey on lines 148-150 that were already assigned on
lines 132-134.
2025-12-29 20:17:23 -08:00
chrislu
f734b2d4bf Refactor: Extract common IAM logic into shared weed/iam package (#7747)
This resolves GitHub issue #7747 by extracting duplicated IAM code into
a shared package that both the embedded S3 IAM and standalone IAM use.

New shared package (weed/iam/):
- constants.go: Common constants (charsets, action strings, error messages)
- helpers.go: Shared helper functions (Hash, GenerateRandomString,
  GenerateAccessKeyId, GenerateSecretAccessKey, StringSlicesEqual,
  MapToStatementAction, MapToIdentitiesAction, MaskAccessKey)
- responses.go: Common IAM response structs (CommonResponse, ListUsersResponse,
  CreateUserResponse, etc.)
- helpers_test.go: Unit tests for shared helpers

Updated files:
- weed/s3api/s3api_embedded_iam.go: Use type aliases and function wrappers
  to the shared package, removing ~200 lines of duplicated code
- weed/iamapi/iamapi_management_handlers.go: Use shared package for constants
  and helper functions, removing ~100 lines of duplicated code
- weed/iamapi/iamapi_response.go: Re-export types from shared package for
  backwards compatibility

Benefits:
- Single source of truth for IAM constants and helpers
- Easier maintenance - changes only need to be made in one place
- Reduced risk of inconsistencies between embedded and standalone IAM
- Better test coverage through shared test suite
2025-12-14 16:08:56 -08:00
Chris Lu
f41925b60b Embed IAM API into S3 server (#7740)
* Embed IAM API into S3 server

This change simplifies the S3 and IAM deployment by embedding the IAM API
directly into the S3 server, following the patterns used by MinIO and Ceph RGW.

Changes:
- Add -iam flag to S3 server (enabled by default)
- Create embedded IAM API handler in s3api package
- Register IAM routes (POST to /) in S3 server when enabled
- Deprecate standalone 'weed iam' command with warning

Benefits:
- Single binary, single port for both S3 and IAM APIs
- Simpler deployment and configuration
- Shared credential manager between S3 and IAM
- Backward compatible: 'weed iam' still works with deprecation warning

Usage:
- weed s3 -port=8333          # S3 + IAM on same port (default)
- weed s3 -iam=false          # S3 only, disable embedded IAM
- weed iam -port=8111         # Deprecated, shows warning

* Fix nil pointer panic: add s3.iam flag to weed server command

The enableIam field was not initialized when running S3 via 'weed server',
causing a nil pointer dereference when checking *s3opt.enableIam.

* Fix nil pointer panic: add s3.iam flag to weed filer command

The enableIam field was not initialized when running S3 via 'weed filer -s3',
causing a nil pointer dereference when checking *s3opt.enableIam.

* Add integration tests for embedded IAM API

Tests cover:
- CreateUser, ListUsers, GetUser, UpdateUser, DeleteUser
- CreateAccessKey, DeleteAccessKey, ListAccessKeys
- CreatePolicy, PutUserPolicy, GetUserPolicy
- Implicit username extraction from authorization header
- Full user lifecycle workflow test

These tests validate the embedded IAM API functionality that was
added in the S3 server, ensuring IAM operations work correctly
when served from the same port as S3.

* Security: Use crypto/rand for IAM credential generation

SECURITY FIX: Replace math/rand with crypto/rand for generating
access keys and secret keys.

Using math/rand is not cryptographically secure and can lead to
predictable credentials. This change:

1. Replaces math/rand with crypto/rand in both:
   - weed/s3api/s3api_embedded_iam.go (embedded IAM)
   - weed/iamapi/iamapi_management_handlers.go (standalone IAM)

2. Removes the seededRand variable that was initialized with
   time-based seed (predictable)

3. Updates StringWithCharset/iamStringWithCharset to:
   - Use crypto/rand.Int() for secure random index generation
   - Return an error for proper error handling

4. Updates CreateAccessKey to handle the new error return

5. Updates DoActions handlers to propagate errors properly

* Fix critical bug: DeleteUserPolicy was deleting entire user instead of policy

BUG FIX: DeleteUserPolicy was incorrectly deleting the entire user
identity from s3cfg.Identities instead of just clearing the user's
inline policy (Actions).

Before (wrong):
  s3cfg.Identities = append(s3cfg.Identities[:i], s3cfg.Identities[i+1:]...)

After (correct):
  ident.Actions = nil

Also:
- Added proper iamDeleteUserPolicyResponse / DeleteUserPolicyResponse types
- Fixed return type from iamPutUserPolicyResponse to iamDeleteUserPolicyResponse

Affected files:
- weed/s3api/s3api_embedded_iam.go (embedded IAM)
- weed/iamapi/iamapi_management_handlers.go (standalone IAM)
- weed/iamapi/iamapi_response.go (response types)

* Add tests for DeleteUserPolicy to prevent regression

Added two tests:
1. TestEmbeddedIamDeleteUserPolicy - Verifies that:
   - User is NOT deleted (identity still exists)
   - Credentials are NOT deleted
   - Only Actions (policy) are cleared to nil

2. TestEmbeddedIamDeleteUserPolicyUserNotFound - Verifies:
   - Returns 404 when user doesn't exist

These tests ensure the bug fixed in the previous commit
(deleting user instead of policy) doesn't regress.

* Fix race condition: Add mutex lock to IAM DoActions

The DoActions function performs a read-modify-write operation on the
shared IAM configuration without any locking. This could lead to race
conditions and data loss if multiple requests modify the IAM config
concurrently.

Added mutex lock at the start of DoActions in both:
- weed/s3api/s3api_embedded_iam.go (embedded IAM)
- weed/iamapi/iamapi_management_handlers.go (standalone IAM)

The lock protects the entire read-modify-write cycle:
1. GetS3ApiConfiguration (read)
2. Modify s3cfg based on action
3. PutS3ApiConfiguration (write)

* Fix action comparison and document CreatePolicy limitation

1. Replace reflect.DeepEqual with order-independent string slice comparison
   - Added iamStringSlicesEqual/stringSlicesEqual helper functions
   - Prevents duplicate policy statements when actions are in different order

2. Document CreatePolicy limitation in embedded IAM
   - Added TODO comment explaining that managed policies are not persisted
   - Users should use PutUserPolicy for inline policies

3. Fix deadlock in standalone IAM's CreatePolicy
   - Removed nested lock acquisition (DoActions already holds the lock)

Files changed:
- weed/s3api/s3api_embedded_iam.go
- weed/iamapi/iamapi_management_handlers.go

* Add rate limiting to embedded IAM endpoint

Apply circuit breaker rate limiting to the IAM endpoint to prevent abuse.
Also added request tracking for IAM operations.

The IAM endpoint now follows the same pattern as other S3 endpoints:
- track() for request metrics
- s3a.iam.Auth() for authentication
- s3a.cb.Limit() for rate limiting

* Fix handleImplicitUsername to properly look up username from AccessKeyId

According to AWS spec, when UserName is not specified in an IAM request,
IAM should determine the username implicitly based on the AccessKeyId
signing the request.

Previously, the code incorrectly extracted s[2] (region field) from the
SigV4 credential string as the username. This fix:

1. Extracts the AccessKeyId from s[0] of the credential string
2. Looks up the AccessKeyId in the credential store using LookupByAccessKey
3. Uses the identity's Name field as the username if found

Also:
- Added exported LookupByAccessKey wrapper method to IdentityAccessManagement
- Updated tests to verify correct access key lookup behavior
- Applied fix to both embedded IAM and standalone IAM implementations

* Fix CreatePolicy to not trigger unnecessary save

CreatePolicy validates the policy document and returns metadata but does not
actually store the policy (SeaweedFS uses inline policies attached via
PutUserPolicy). However, 'changed' was left as true, triggering an unnecessary
save operation.

Set changed = false after successful CreatePolicy validation in both embedded
IAM and standalone IAM implementations.

* Improve embedded IAM test quality

- Remove unused mock types (mockCredentialManager, mockEmbeddedIamApi)
- Use proto.Clone instead of proto.Merge for proper deep copy semantics
- Replace brittle regex-based XML error extraction with proper XML unmarshalling
- Remove unused regexp import
- Add state and field assertions to tests:
  - CreateUser: verify username in response and user persisted in config
  - ListUsers: verify response contains expected users
  - GetUser: verify username in response
  - CreatePolicy: verify policy metadata in response
  - PutUserPolicy: verify actions were attached to user
  - CreateAccessKey: verify credentials in response and persisted in config

* Remove shared test state and improve executeEmbeddedIamRequest

- Remove package-level embeddedIamApi variable to avoid shared test state
- Update executeEmbeddedIamRequest to accept API instance as parameter
- Only call xml.Unmarshal when v != nil, making nil-v cases explicit
- Return unmarshal error properly instead of always returning it
- Update all tests to create their own EmbeddedIamApiForTest instance
- Each test now has isolated state, preventing test interdependencies

* Add comprehensive test coverage for embedded IAM

Added tests for previously uncovered functions:
- iamStringSlicesEqual: 0% → 100%
- iamMapToStatementAction: 40% → 100%
- iamMapToIdentitiesAction: 30% → 70%
- iamHash: 100%
- iamStringWithCharset: 85.7%
- GetPolicyDocument: 75% → 100%
- CreatePolicy: 91.7% → 100%
- DeleteUser: 83.3% → 100%
- GetUser: 83.3% → 100%
- ListAccessKeys: 55.6% → 88.9%

New test cases for helper functions, error handling, and edge cases.

* Document IAM code duplication and reference GitHub issue #7747

Added comments to both IAM implementations noting the code duplication
and referencing the tracking issue for future refactoring:
- weed/s3api/s3api_embedded_iam.go (embedded IAM)
- weed/iamapi/iamapi_management_handlers.go (standalone IAM)

See: https://github.com/seaweedfs/seaweedfs/issues/7747

* Implement granular IAM authorization for self-service operations

Previously, all IAM actions required ACTION_ADMIN permission, which was
overly restrictive. This change implements AWS-like granular permissions:

Self-service operations (allowed without admin for own resources):
- CreateAccessKey (on own user)
- DeleteAccessKey (on own user)
- ListAccessKeys (on own user)
- GetUser (on own user)
- UpdateAccessKey (on own user)

Admin-only operations:
- CreateUser, DeleteUser, UpdateUser
- PutUserPolicy, GetUserPolicy, DeleteUserPolicy
- CreatePolicy
- ListUsers
- Operations on other users

The new AuthIam middleware:
1. Authenticates the request (signature verification)
2. Parses the IAM Action and target UserName
3. For self-service actions, allows if user is operating on own resources
4. For all other actions or operations on other users, requires admin

* Fix misleading comment in standalone IAM CreatePolicy

The comment incorrectly stated that CreatePolicy only validates the policy
document. In the standalone IAM server, CreatePolicy actually persists
the policy via iama.s3ApiConfig.PutPolicies(). The changed flag is false
because it doesn't modify s3cfg.Identities, not because nothing is stored.

* Simplify IAM auth and add RequestId to responses

- Remove redundant ACTION_ADMIN fallback in AuthIam: The action parameter
  in authRequest is for permission checking, not signature verification.
  If auth fails with ACTION_READ, it will fail with ACTION_ADMIN too.

- Add SetRequestId() call before writing IAM responses for AWS compatibility.
  All IAM response structs embed iamCommonResponse which has SetRequestId().

* Address code review feedback for IAM implementation

1. auth_credentials.go: Add documentation warning that LookupByAccessKey
   returns internal pointers that should not be mutated.

2. iamapi_management_handlers.go & s3api_embedded_iam.go: Add input guards
   for StringWithCharset/iamStringWithCharset when length <= 0 or charset
   is empty to avoid runtime errors from rand.Int.

3. s3api_embedded_iam_test.go: Don't ignore xml.Marshal errors in test
   DoActions handler. Return proper error response if marshaling fails.

4. s3api_embedded_iam_test.go: Use obviously fake access key IDs
   (AKIATESTFAKEKEY*) to avoid CI secret scanner false positives.

* Address code review feedback for IAM implementation (batch 2)

1. iamapi/iamapi_management_handlers.go:
   - Redact Authorization header log (security: avoid exposing signature)
   - Add nil-guard for iama.iam before LookupByAccessKey call

2. iamapi/iamapi_test.go:
   - Replace real-looking access keys with obviously fake ones
     (AKIATESTFAKEKEY*) to avoid CI secret scanner false positives

3. s3api/s3api_embedded_iam.go - CreateUser:
   - Validate UserName is not empty (return ErrCodeInvalidInputException)
   - Check for duplicate users (return ErrCodeEntityAlreadyExistsException)

4. s3api/s3api_embedded_iam.go - CreateAccessKey:
   - Return ErrCodeNoSuchEntityException if user doesn't exist
   - Removed implicit user creation behavior

5. s3api/s3api_embedded_iam.go - getActions:
   - Fix S3 ARN parsing for bucket/path patterns
   - Handle mybucket, mybucket/*, mybucket/path/* correctly
   - Return error if no valid actions found in policy

6. s3api/s3api_embedded_iam.go - handleImplicitUsername:
   - Redact Authorization header log
   - Add nil-guard for e.iam

7. s3api/s3api_embedded_iam.go - DoActions:
   - Reload in-memory IAM maps after credential mutations
   - Call LoadS3ApiConfigurationFromCredentialManager after save

8. s3api/auth_credentials.go - AuthSignatureOnly:
   - Add new signature-only authentication method
   - Bypasses S3 authorization checks for IAM operations
   - Used by AuthIam to properly separate signature verification
     from IAM-specific permission checks

* Fix nil pointer dereference and error handling in IAM

1. AuthIam: Add nil check for identity after AuthSignatureOnly
   - AuthSignatureOnly can return nil identity with ErrNone for
     authTypePostPolicy or authTypeStreamingUnsigned
   - Now returns ErrAccessDenied if identity is nil

2. writeIamErrorResponse: Add missing error code cases
   - ErrCodeEntityAlreadyExistsException -> HTTP 409 Conflict
   - ErrCodeInvalidInputException -> HTTP 400 Bad Request

3. UpdateUser: Use consistent error handling
   - Changed from direct ErrInvalidRequest to writeIamErrorResponse
   - Now returns correct HTTP status codes based on error type

* Add IAM config reload to standalone IAM server after mutations

Match the behavior of embedded IAM (s3api_embedded_iam.go) by reloading
the in-memory identity maps after persisting configuration changes.
This ensures newly created access keys are visible to LookupByAccessKey
immediately without requiring a server restart.

* Minor improvements to test helpers and log masking

1. iamapi_test.go: Update mustMarshalJSON to use t.Helper() and t.Fatal()
   instead of panic() for better test diagnostics

2. s3api_embedded_iam.go: Mask access key in 'not found' log message
   to avoid exposing full access key IDs in logs

* Mask access key in standalone IAM log message for consistency

Match the embedded IAM version by masking the access key ID in
the 'not found' log message (show only first 4 chars).
2025-12-14 16:02:06 -08:00
guosj
db7766323e complete project code, remain test code 2022-02-15 17:35:33 +08:00
Konstantin Lebedev
5021bea698 GetUserPolicy 2021-04-10 23:57:45 +05:00
Konstantin Lebedev
8a95f9c10c iam GetUser 2021-03-29 12:01:44 +05:00