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Introduce `ok agent` (`--only`/`--allow`/`--idle-lock`): prompt for the master password via rpassword (spawn_blocking), unlock the file-backed SQLCipher vault mirroring executor::vault::handle_unlock, and serve the ssh-agent over a Unix socket; prints SSH_AUTH_SOCK before serving. - main.rs: clap Parser with optional subcommand; no subcommand == unchanged TUI path; --version handled natively (ok <version>, empty stderr). - agent/cli.rs: AgentArgs + run() (tty) + unlock_and_serve() (tty-free testable core) + unlock_vault(); SecureStr password, never logged. - agent/paths.rs: pure socket_path() resolver (XDG_RUNTIME_DIR > TMPDIR > /tmp); 0700 parent enforced by server.serve(). - idle_lock parsed/accepted, NOT enforced (Task 11) — loud startup warn. - tests/agent_e2e_test.rs: real ssh-add -l/-L interop against the testable core over a file-backed vault (multi-thread runtime to avoid deadlock). cargo fmt clean; clippy -D warnings clean; cargo test 3152 passed/0 failed.
Add RsaSigner producing RFC 8332 rsa-sha2-256 / rsa-sha2-512 PKCS#1 v1.5 signatures, mirroring Ed25519Signer's structure and secret hygiene. SHA-512 wins when both flags are set (matches OpenSSH); no flags defaults to SHA-256 (SHA-1 ssh-rsa is a spec Non-Goal — modern ssh refuses it). Bypass ssh-key 0.6.7's buggy TryFrom<&RsaKeypair> (passes p twice instead of p,q) by building rsa::RsaPrivateKey::from_components(n,e,d,[p,q]) directly; re-implement the 2048-bit minimum locally. Server: rename sign_with_ed25519 -> sign and add an RSA dispatch arm; wire flags SSH_AGENT_SIGN_RSA_SHA2_256 (0x02) / _512 (0x04) map into SignFlags before the algo match. ed25519 ignores the RSA bits (no regression). Tests: 12 RSA signer tests + 3 RSA protocol-level roundtrips, both SHA-2 flag paths + default + encrypted-key path, all verifying with the rsa crate. ed25519 + e2e suites still green (36/36 agent tests; 2628/2628 lib tests).
Add EcdsaSigner mirroring Ed25519Signer/RsaSigner: from_openssh maps
KeypairData::Ecdsa to the curve crate's SigningKey (p256/p384/p521),
sign produces the SSH wire blob `string ecdsa-sha2-nistp{256,384,521}`
+ `string <DER ECDSA sig>` with the curve's SHA-2 digest. ECDSA ignores
SignFlags. Dispatch wired into server.rs sign(); identity.rs now maps
NistP521 (previously rejected) so the agent advertises P-521 keys.
Signatures are RFC 6979 deterministic (the ecdsa crate's default Signer
impl), consistent with the deterministic ed25519/RSA-PKCS1v15 paths;
they verify identically to OpenSSH's randomized signatures.
p521 0.13 (features=["ecdsa"]) added and ssh-key "p521" feature enabled.
TDD: per-curve sign+verify (p256/p384/p521), passphrase path, cross-key
rejection, flags-ignored, determinism, and protocol SIGN_REQUEST
roundtrips for p256 and p521. cargo fmt + clippy -D warnings clean.
After a successful SIGN_REQUEST, write one AuditOperation::SshSign row (record_id + name + resolved wire algorithm, e.g. ssh-ed25519 / rsa-sha2-256 / ecdsa-sha2-nistp256). All three algorithm families (ed25519/RSA/ECDSA) write SshSign. The audit write is best-effort: on failure it is logged with tracing::warn! and the successful SIGN_RESPONSE is still returned, so an audit failure never blocks a successful signature. Decrypt-audit decision: the sign path now decrypts key material via decrypt_field_no_audit (new), so each sign writes ONLY SshSign. RecordViewPassword is misleading here (the user never "viewed" a password; the agent used the private key internally to sign). The internal decrypt_field_with_audit(_, _, None) hook already existed; decrypt_field_no_audit exposes it with caller-owns-audit semantics. Adds SshAlgo::wire_name(flags) to resolve the precise wire algorithm name (incl. RSA SHA-2 variant) for the audit detail.
Add AgentLock (src/agent/lock.rs) mirroring InstanceLock but using a
distinct .agent.lock file, so the SSH agent daemon and the TUI hold
independent advisory locks on independent inodes within the same data_dir.
- AgentLock::acquire uses fs4 try_lock_exclusive on <data_dir>/.agent.lock;
AgentLockError{AlreadyRunning, Io} via thiserror mirrors InstanceLockError.
- Acquire the lock in cli::unlock_and_serve before unlocking the vault or
binding the socket; hold it for the daemon lifetime (drops on return).
AlreadyRunning surfaces via the new AgentCliError::Lock variant and exits
loud through main.rs::run_agent (no silent second instance).
- Declare pub mod lock in agent/mod.rs.
Tests (TDD RED->GREEN):
- Inline unit tests: first acquire ok, second acquire -> AlreadyRunning,
drop releases (reacquire ok), nested data_dir created, AgentLock +
InstanceLock coexist on the same dir (distinct .agent.lock / .instance.lock).
- Integration (agent_e2e_test.rs): while a real agent daemon runs through
unlock_and_serve on a file-backed SQLCipher vault, a second AgentLock on
the same dir fails AlreadyRunning, InstanceLock succeeds (runtime
coexistence), and AgentLock is reacquirable after the daemon releases it.
Task 11 (OKI-0014 / OKS-0014 / OKP-0014). - serve() now races the accept loop against SIGTERM/SIGINT (cfg(unix)) and an optional idle-lock timer via tokio::select!. On any shutdown source it removes the socket + pidfile and drops the vault session (keys cleared by existing zeroize-on-drop). - Add pidfile lifecycle: paths::pidfile_path() + pidfile_for_socket(); the pidfile is written before bind (closes a socket-vs-pidfile race) and removed on every shutdown path, including early bind error. - --idle-lock <secs> is now enforced: an idle timer resets on each successful SIGN_REQUEST (try_send into an mpsc activity channel from the sync dispatch scope); no sign for <secs> triggers the same graceful cleanup. None disables the timer. The old 'NOT enforced' startup warning is removed. - Reposition AgentLock acquire ABOVE the password prompt in run() (Task 10 Minor-1): a second 'ok agent' fails with AlreadyRunning before asking for the password. unlock_and_serve (test path) acquires then delegates to a new unlock_and_serve_with_lock core that takes the guard; production run() acquires early and calls the same core. - Add AgentServerError::Pidfile variant (fail loud on pidfile write failure). - New tests/agent_shutdown_test.rs: SIGTERM, SIGINT, and idle-lock all trigger graceful shutdown with socket + pidfile removal; pidfile written at startup with the running PID. Serialized via a tokio::sync::Mutex to keep the process-wide signal receivers from racing. cargo fmt && cargo clippy --all-targets -- -D warnings clean. All agent suites green (shutdown 3, lib agent:: 35, e2e 3, protocol 10).
Add CHANGELOG entry and a short usage section to README/README-ZH/ INSTALL/INSTALL-ZH for the `ok agent` ssh-agent backend. No version change (managed by the version-management skill); no code change. Task 12 (final) of OKI-0014 / OKS-0014 / OKP-0014.
feat(agent): SSH agent backend (ok agent) — OKI-0014
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Summary
Merges
developintomasterwith two main changes:1.
ok agent— ssh-agent protocol backend (#159)run_agentfor parity with TUISshSignoperation)ok agentREADME expanded into a usage guide (EN + ZH)2. Dependabot security fix (GHSA-4w2j-m93h-cj5j)
quinn-proto0.11.14 → 0.11.15: remote memory exhaustion from unbounded out-of-order stream reassembly (high severity). Transitive viaopendal→reqwest(http3 feature; dormant in build graph). Fixes Dependabot alerts tech-debt: Timer rebuild after config change not implemented #4 and feat(tui): tachyonfx 0.20.1 ratatui version incompatibility #5.Test Plan
cargo check --lockedpasses for root crate andtools/okb-gen