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Sinan Eldem
b93e7b2355
* feat(madmin): add account and two-factor wire contract Defines the self-service account and MFA API shapes in one place so the console and the `rc` CLI decode identical payloads instead of each carrying its own copy of the contract. `AccountMutability` is part of the contract on purpose: a client needs to know whether the server will accept a password change for this identity before offering the control, rather than discovering it from a rejected request. * feat(s3-types): add IAM identity audit events Adds `iam:Identity:CredentialChanged` and `iam:Identity:AuthChallenge` so account and authentication activity reaches the audit pipeline in its own namespace, the way the KMS events already do. Neither is reachable from a bucket notification config. Two variants for the whole surface rather than one per operation: `mask()` gives every variant its own bit in a `u64`, and the budget is nearly spent (63 of 64 used after this). The per-operation detail lives in `AuditEntry::api.name` and the `iamOperation` tag, which is what a SIEM filters on anyway. Splitting these further needs `mask()` widened first. * feat(iam): add two-factor authentication primitives Implements the state machine behind TOTP enrollment and verification in the IAM domain, so the admin handlers stay HTTP plumbing and the console and CLI drive identical logic. * `totp`: RFC 6238 over the workspace's existing hmac/sha1, pinned to the published Appendix B vectors. SHA-1, 6 digits, 30s: the parameters every mainstream authenticator app implements. Verification returns the matched time step so the caller can burn it. * `recovery`: ten single-use codes, 100 bits each, in a Crockford base32 alphabet without I/L/O/U. Stored as domain-separated SHA-256 digests — a password KDF would have to run once per stored code on every attempt, turning each guess into an attacker-controlled cost, and with uniform 100-bit input there is no dictionary for it to defend against. * `challenge`: stateless HMAC tokens. A TTL cache would be node-local, so a cluster without session affinity would issue on one node and verify on another; nothing here needs replicating. * `record`: two-phase enrollment, replay high-water mark, and lockout. Pending enrollment never gates a login, so a mis-scanned QR cannot lock an operator out, and re-configuring keeps the old factor working until the new one is confirmed. * `store`: one object per identity under `config/mfa/`, a sibling of `config/iam/` so the IAM cache loader's startup walk does not sweep it up. Optimistic `If-Match` writes; deliberately uncached, because a cache would need cluster-wide invalidation to keep the replay mark and the lockout counter honest. * `qr`: server-side rendering, so neither client needs a QR encoder. Enrollment is refused without `RUSTFS_IAM_MASTER_KEY`. A TOTP secret is credential-equivalent, and one written in plaintext could be lifted off a disk — worse than no second factor, because the user believes they have one. IAM identities tolerate a missing master key for backward compatibility; a new feature has no such history to honour. Also adds `IamSys::revoke_sts_sessions_for_parent`, so a credential rotation can invalidate the sessions minted under the old secret. * feat(admin): add self-service account endpoints and the two-factor login gate Adds the account surface (`/v3/account/*`), the second-factor endpoints, the administrative reset (`/v3/user/mfa`), and `PUT /v3/set-user-secret-key`, plus the gate on `AssumeRole`. What the gate covers, and what it deliberately does not: * `AssumeRole` is the only interactive login RustFS has, so it is where a second factor can be enforced. With one enrolled it requires `TokenCode`; without an enrollment the code path is unchanged, so existing deployments are untouched. * A request signed directly with a long-term access key stays ungated. Gating it would break every script and CLI the moment a human enabled 2FA on their own account, and would add no protection: whoever holds the secret key already has full access without presenting a code. This is the division AWS draws; making 2FA meaningful for API access needs an `aws:MultiFactorAuthPresent` policy condition, tracked separately. `SerialNumber`/`TokenCode` are STS's own parameters, so an SDK or script authenticates the same way the console does. `caller_identity` resolves who a request acts as. The console signs with a short-lived STS session, so "the caller" is almost never the key that signed. It reports two separate capabilities: root cannot rotate its secret (a process-wide `OnceLock` that also derives the internode RPC secret) but *can* enroll a second factor — conflating the two would leave the default deployment's console login unprotectable. The self-service routes carry no admin action. Giving them one would be wrong in both directions: it would stop an ordinary user from changing their own password, and let any holder of that action change someone else's. They gate on possession of the credential plus, for the mutations, knowledge of the current secret — a signature only proves a credential was used, so without that a hijacked tab could rewrite the account's credentials or strip its second factor. `set-user-secret-key` exists because the only prior way to change a password was to re-POST the whole user through `add-user`, which rewrote `status` and dropped the policy field — a password reset that silently re-enabled a disabled account. Wrong, replayed and malformed codes are indistinguishable on the wire; the distinction survives only in the audit trail, where no submitted value, secret or code is ever recorded. * test(e2e): cover the two-factor lifecycle and its regressions Unit tests cover the state machine at its edges; only an end-to-end test proves the pieces are wired together and that the existing authentication paths still behave. Asserts, against a real server: enrollment is refused without a master key; the full enroll/activate flow works with a genuine RFC 6238 code; `AssumeRole` refuses without a factor and accepts a valid one; a recovery code works exactly once; a direct SigV4 admin request keeps working with a factor enrolled; `AssumeRole` for an unenrolled identity is unchanged; and a password rotation invalidates the old secret. The test computes TOTP codes itself rather than calling the server's implementation — a shared helper could agree with a bug on both sides. This suite caught a real defect during development: enrollment was refused for root because its *password* is immutable, which would have left the default deployment — an administrator signing into the console as root — unable to protect the one login the feature exists for. * docs(operations): document the two-factor authentication model Records what the second factor protects and what it deliberately does not, because several of the boundaries look like gaps until the alternative is spelled out: why direct SigV4 access stays ungated, why root credentials cannot be rotated at runtime, why secret keys cannot be hashed in an S3 server, and why at-rest protection is mandatory for a TOTP secret but optional for an IAM identity. Also states the limitations plainly, including that GHSA-m77q-r63m-pj89 is unaffected: a holder of the root secret can still forge a session token, 2FA claim included. Placed alongside the other authentication and KMS security documents rather than under a new `docs/security/`, which `.gitignore` excludes. * fix(admin): route the new account handlers through the admin s3 facade Two of the guardrails in the CI "Quick Checks" job rejected the previous commits, so the required check would have gone red as soon as a maintainer approved the workflow run. `check_architecture_migration_rules.sh` requires everything under `rustfs/src/admin` to reach `ECStore` through a domain module rather than the root of `storage_api`. The MFA handler and the two `AssumeRole` signatures now use `storage_api::runtime::ECStore`, which is where the other ten admin handlers already take it from. `check_s3s_footprint.sh` ratchets two counters that new code may not grow: files referencing `s3s` and error-macro invocation lines. This branch added four files and thirty-two lines to them. The ratchet is lower-only and its header forbids raising a baseline to get green, so the construction moves behind the facade instead: `storage_api::s3` now re-exports the request and body types these handlers need and gains an `error` constructor over `S3Error::with_message`. That is the same constructor the macro expands to and the one `handlers/mod.rs`, `rebalance_internal_error` and `invalid_object_lock_configuration` already call, so this is the existing practice rather than a new one, and it keeps the `s3s` dependency in the boundary file the s3gate migration replaces. Every error code and message is carried over unchanged. In `sts.rs` only the call site this branch added is converted; the sixteen that predate it are left alone, because rewriting them would put unrelated churn in a feature PR and push the counter below the baseline it is meant to hold.