- common.rs gains an AdminTransport knob (Signed | Awscurl) with admin_execute_at plus three family wrappers: admin_create_user_via, admin_add_canned_policy_via, admin_attach_user_policy_via; the existing admin_create_user now delegates over the Signed transport.
- Deleted the four signed admin request clones in admin_mfa_test, admin_auth_test, reliant/tiering, and inline_fast_path_cluster_test; each keeps a thin local wrapper over common::admin_request so call sites keep their Option<&str> body shape.
- Deduped the notification_webhook signer onto common::signed_request and the webdav_core signer plus its three admin helpers onto the shared _via helpers.
- Consolidated the S3-client-with-credentials builders: admin_auth s3_client_with, existing_object_tag user_client/sts_session_client, bucket_policy_check create_user_client, and the create_user_s3_client copies in group_delete_test and replication_extension_test now delegate to create_s3_client_with_credentials / build_test_s3_config; replication_extension admin_add_canned_policy and admin_attach_policy_to_user route through the _via helpers on the Signed transport.
- The awscurl-gated suites (existing_object_tag_policy, bucket_policy_check, policy/policy_variables) keep going through the external awscurl binary via AdminTransport::Awscurl, preserving their wire behavior.
Part of rustfs/backlog#1846 (cluster 2).
test(admin-auth): unit + e2e coverage for the admin authorization gate
Adds the first tests for the central admin authorization gate
`rustfs/src/admin/auth.rs`, which previously had zero coverage
(backlog#1151 sec-4, master plan #1155).
Unit tests (rustfs/src/admin/auth.rs):
- Refactor the two `validate_admin_request*` entry points to share a
single generic decision core `evaluate_admin_actions<S: Store>` /
`check_admin_request_auth<S: Store>` (removes the duplicated
action-loop and makes the gate testable without a running cluster).
- Cover: owner/root credential allowed; authenticated non-admin
credential denied with AccessDenied; missing credential denied; and
the multi-action loop grants on any permitted action, denies when
none pass. Backed by an in-memory empty IamSys so the owner path
short-circuits to allow and every other principal resolves to deny.
E2E (crates/e2e_test/src/admin_auth_test.rs, raw SigV4 over HTTP, no
awscurl dependency):
- non_admin_credential_denied_on_admin_api: a limited IAM user gets
403 AccessDenied on GET /rustfs/admin/v3/info while root succeeds.
- root_credential_rotation_takes_effect: restart with rotated
--access-key/--secret-key; new credential works and the stale one is
rejected, on both the admin plane and the S3 data plane.
- default_credentials_emit_startup_warning: booting with the default
rustfsadmin credentials emits the default-credentials warning.
Refs rustfs/backlog#1151 (sec-4), #1155.
Zhengchao An