Fix SSH releases missing remote daemon assets - #12720
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📝 WalkthroughWalkthroughThe pull request adds the remote daemon runtime, CLI, WebSocket PTY and tmux compatibility services, agent relays, persistent lifecycle handling, release manifests, asset verification, publication workflows, and CI coverage. ChangesRemote daemon runtime
Priority: ⬆️ High Estimated code review effort: 5 (Critical) | ~120 minutes Change: Bug fix · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant ReleaseWorkflow
participant BuildScript
participant VerifyScript
participant AppBundle
participant GitHubRelease
ReleaseWorkflow->>BuildScript: build cmuxd-remote assets
BuildScript->>VerifyScript: validate manifest and checksums
VerifyScript->>AppBundle: embed and verify daemon manifest
ReleaseWorkflow->>GitHubRelease: upload binaries, checksums, and manifest
Merge Risk: 🟡 Moderate · up to Later sign-out or account changes may stop reaching reconciliation after the auth stream is replaced. Guard termination by stream identity before merging. Important Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional. ❌ Failed checks (3 errors, 2 warnings)
✅ Passed checks (20 passed)
Full details: Out of Scope Changes checkExplanation Issue Resolution Remove the unrelated runtime features and their tests from this PR, or move them to separate PRs. Keep the daemon asset build, manifest, checksum, embedding, verification, publication, pruning, CI, and targeted regression changes required by Full details: Docstring CoverageExplanation Docstring coverage is 13.65% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 469 functions across 57 files. (2 skipped: 2 unsupported.) Full details: Cmux Algorithmic ComplexityExplanation The restored production tmux socket path introduces a per-target rescan. Resolution Refactor the batch tmux path to fetch one workspace snapshot and build indexed workspace, pane, and surface data once. Pass that snapshot into context rendering instead of calling Full details: Cmux Swift Package BoundariesExplanation The new production file Resolution Move the auth observation feature behind a small SwiftPM boundary. The smallest extraction is the existing Full details: Cmux User-Facing Error PrivacyExplanation The pull request adds user-facing command errors that expose internal environment variable names. Resolution Replace internal environment-variable names and snapshot/provider implementation terms in user-visible errors with generic cmux/product terms. Keep the exact variables, paths, and raw tool errors in sanitized internal logs only. For example, report that no relay connection is configured and that shell integration could not be configured, then give the user a safe next action such as using the socket option or selecting a supported shell. Audit all relay, agent-launch, plugin-install, and API error paths for the same unredacted details before merging. ✨ Finishing Touches 💡 2📝 Generate docstrings 💡
🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@daemon/remote/cmd/cmuxd-remote/agent_launch.go`:
- Line 130: Update the affected error-producing calls in the daemon launch flow
so every return value is handled or explicitly discarded, including environment
mutations, process/file operations, and JSON-related calls; change the two
fmt.Errorf usages to wrap underlying causes with the error-wrapping verb, and
handle the json.MarshalIndent error when marshaling any. Leave the gosec finding
for the Node --max-old-space-size flag unchanged.
- Around line 111-116: Update runOMORelay to call omoEnsurePlugin only for real
launches, reusing the existing nonLaunch classification result as
runClaudeTeamsRelay does. Ensure informational and management invocations such
as --help and models bypass plugin installation and proceed without
package-manager or network access.
In `@daemon/remote/cmd/cmuxd-remote/cli_test.go`:
- Around line 349-351: Remove the wall-clock timing instrumentation and
assertions from both dialSocket tests, including start, elapsed, and
500-millisecond checks. Keep the deterministic refreshCalls != 1 assertions that
verify refreshAddr is not repeatedly polled; if latency coverage is required,
replace it with an injected dialer or explicit completion signal.
In `@daemon/remote/cmd/cmuxd-remote/cloud_cli_bridge.go`:
- Line 66: Restrict the socket permissions in the start flow by changing the
os.Chmod call for socketPath from 0o666 to 0o600, assuming the CLI and daemon
run under the same user; preserve the existing socket setup and connection
handling.
In `@daemon/remote/cmd/cmuxd-remote/persistent_log_test.go`:
- Line 21: Replace the fixed-duration firstCommand value "sleep 60" in the test
with a non-expiring process such as cat, so the test no longer depends on
wall-clock timing while pty.close remains responsible for teardown.
In `@daemon/remote/cmd/cmuxd-remote/tmux_compat.go`:
- Line 1990: Update tmuxCapturePane to parse the -b option and use its value as
the key when storing captured text in store.Buffers, while preserving the
default buffer behavior when -b is omitted. Ensure the related argument parsing
path around parseTmuxArgs supports this option.
- Around line 2317-2324: Update the signal-file creation in the -S branch around
tmuxWaitForSignalPath to use a daemon-owned 0700 directory, open the file with
O_NOFOLLOW and mode 0600, preserve existing-file behavior, and return any write
error before printing OK.
- Around line 693-699: Update the caller-handle resolution around
tmuxCallerWorkspaceHandle so the literal "current" is not passed back into
tmuxResolveWorkspaceId; treat that value as unusable and continue with the
existing target-resolution fallback, while preserving valid UUID and reference
handling.
In `@daemon/remote/cmd/cmuxd-remote/tmux_split_ref_test.go`:
- Line 24: Synchronize the shared splitCreated state across connection-handler
goroutines in the test, replacing the plain bool with atomic.Bool or equivalent
synchronization. Update the reads near the existing connection-handler checks
and the write in the split-creation path so all accesses use the same
synchronization mechanism and pass go test -race.
In `@daemon/remote/cmd/cmuxd-remote/ws_pty.go`:
- Line 419: Update the RPC client handoff write in the surrounding lease-install
flow to avoid the shared /tmp/cmux path: store it beneath the daemon’s private
per-user root and use a no-follow or atomic creation method that rejects
symlinked or otherwise untrusted parent and target paths. Preserve the existing
writeJSONFile payload behavior while ensuring the selected location cannot be
redirected by a local user.
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⛔ Files ignored due to path filters (1)
daemon/remote/go.sumis excluded by!**/*.sum
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.github/workflows/nightly.yml.github/workflows/release.yml.github/workflows/remote-daemon.ymldaemon/remote/.gitignoredaemon/remote/TMUX_CORPUS.mddaemon/remote/cmd/cmuxd-remote/agent_launch.godaemon/remote/cmd/cmuxd-remote/agent_launch_classification.godaemon/remote/cmd/cmuxd-remote/agent_launch_classification_test.godaemon/remote/cmd/cmuxd-remote/agent_launch_context.godaemon/remote/cmd/cmuxd-remote/agent_launch_context_test.godaemon/remote/cmd/cmuxd-remote/agent_launch_shell.godaemon/remote/cmd/cmuxd-remote/agent_launch_shell_test.godaemon/remote/cmd/cmuxd-remote/agent_launch_temp_test.godaemon/remote/cmd/cmuxd-remote/agent_launch_test.godaemon/remote/cmd/cmuxd-remote/cli.godaemon/remote/cmd/cmuxd-remote/cli_overrides.godaemon/remote/cmd/cmuxd-remote/cli_relay_test.godaemon/remote/cmd/cmuxd-remote/cli_test.godaemon/remote/cmd/cmuxd-remote/cloud_cli_bridge.godaemon/remote/cmd/cmuxd-remote/cloud_cli_bridge_test.godaemon/remote/cmd/cmuxd-remote/main.godaemon/remote/cmd/cmuxd-remote/main_test.godaemon/remote/cmd/cmuxd-remote/persistent_lifecycle.godaemon/remote/cmd/cmuxd-remote/persistent_lifecycle_test.godaemon/remote/cmd/cmuxd-remote/persistent_log.godaemon/remote/cmd/cmuxd-remote/persistent_log_test.godaemon/remote/cmd/cmuxd-remote/persistent_process_output.godaemon/remote/cmd/cmuxd-remote/persistent_process_output_darwin.godaemon/remote/cmd/cmuxd-remote/persistent_process_output_linux.godaemon/remote/cmd/cmuxd-remote/persistent_proxy_test.godaemon/remote/cmd/cmuxd-remote/persistent_pty_exec.godaemon/remote/cmd/cmuxd-remote/persistent_pty_exec_darwin.godaemon/remote/cmd/cmuxd-remote/persistent_pty_exec_linux.godaemon/remote/cmd/cmuxd-remote/tmux_compat.godaemon/remote/cmd/cmuxd-remote/tmux_compat_test.godaemon/remote/cmd/cmuxd-remote/tmux_corpus_behavior_test.godaemon/remote/cmd/cmuxd-remote/tmux_corpus_fuzz_test.godaemon/remote/cmd/cmuxd-remote/tmux_corpus_manifest_test.godaemon/remote/cmd/cmuxd-remote/tmux_corpus_ws_pty_test.godaemon/remote/cmd/cmuxd-remote/tmux_split_ref_test.godaemon/remote/cmd/cmuxd-remote/ws_pty.godaemon/remote/cmd/cmuxd-remote/ws_pty_fuzz_test.godaemon/remote/cmd/cmuxd-remote/ws_pty_session_cleanup_linux_test.godaemon/remote/cmd/cmuxd-remote/ws_pty_session_processes_darwin.godaemon/remote/cmd/cmuxd-remote/ws_pty_session_processes_linux.godaemon/remote/cmd/cmuxd-remote/ws_pty_test.godaemon/remote/cmd/cmuxd-remote/ws_rpc_test.godaemon/remote/go.moddaemon/remote/scripts/stress-ws-pty.shscripts/build_remote_daemon_release_assets.shscripts/generate_remote_daemon_release_manifest.pyscripts/prune_nightly_release_assets.pyscripts/release_asset_guard.jsscripts/release_asset_guard.test.jsscripts/verify_remote_daemon_release.pytests/test_ci_nightly_prune_python_compat.shtests/test_remote_daemon_release_assets.pytests/test_remote_daemon_release_verification.py
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Addressed review 5217584266 against The security/permitted-behavior regressions were recorded failing first in commit The old Cloud RPC client handoff had no remaining repository consumer, so its unsafe shared |
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Inline comments:
In `@daemon/remote/cmd/cmuxd-remote/cloud_cli_bridge.go`:
- Line 66: Secure the Unix-socket setup before accepting connections: ensure the
socket’s parent directory has 0700 permissions before net.Listen creates the
socket, or add peer authentication in handleConn before it invokes forward.
Preserve the existing 0600 socket permission behavior and reject unauthenticated
peers before forwarding requests.
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📒 Files selected for processing (11)
daemon/remote/cmd/cmuxd-remote/agent_launch.godaemon/remote/cmd/cmuxd-remote/cli_test.godaemon/remote/cmd/cmuxd-remote/cloud_cli_bridge.godaemon/remote/cmd/cmuxd-remote/persistent_log_test.godaemon/remote/cmd/cmuxd-remote/restored_daemon_security_test.godaemon/remote/cmd/cmuxd-remote/tmux_compat.godaemon/remote/cmd/cmuxd-remote/tmux_compat_test.godaemon/remote/cmd/cmuxd-remote/tmux_corpus_behavior_test.godaemon/remote/cmd/cmuxd-remote/tmux_split_ref_test.godaemon/remote/cmd/cmuxd-remote/tmux_wait_signal.godaemon/remote/cmd/cmuxd-remote/ws_pty.go
💤 Files with no reviewable changes (1)
- daemon/remote/cmd/cmuxd-remote/cli_test.go
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Audit re-checked against pushed HEAD
Earlier local structured review findings were independently reproduced and fixed: PTY resize blocking ( Validation: release guard 10/10; bundle verifier 12/12; stable/NIGHTLY/RC real artifact test (all four targets each); native Go ordinary/race suites; 1000-workspace before/after behavior; channel/pruning guards. CI on this HEAD is still running. Final tagged build and real SSH interactive/reconnect proof are pending; no successful fixed-app SSH outcome is claimed yet. Trade-offs: restored daemon source is required by the existing client; unpublished dogfood apps carry four compressed verified binaries; non-reading RPC clients time out after ten seconds; no relay authorization expansion. Localization audit: shell/relay diagnostics are developer CLI messages, stripped of raw shell paths/internal environment names; Swift added no literal app UI/error text (Cocoa errors remain localized). The warning scanner ran and reported six inherited over-budget warnings at unchanged mainline sites; the budget file is untouched. Build opener (final build being prepared): http://127.0.0.1:17320/12648-remote-daemon-assets . No merge or release has occurred. |
Restore the dependency required by current main, using the original author repair from d2f0413. The tagged build otherwise fails to resolve MobileHostIrohAuthObserver.
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Inline comments:
In `@Sources/Mobile/MobileHostIrohAuthObserver.swift`:
- Line 20: Update the observer’s stream lifecycle around states(for:) and
configure(auth:) to track an active stream identity alongside its continuation.
Assign each replacement stream a new ID, capture that ID in onTermination, and
on the MainActor only clear or finish the active state when the callback’s ID
still matches, preventing an old stream’s termination from stopping the
replacement stream.
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📒 Files selected for processing (5)
.github/workflows/remote-daemon.ymlSources/Mobile/MobileHostIrohAuthObserver.swiftcmux.xcodeproj/project.pbxprojdaemon/remote/cmd/cmuxd-remote/tmux_compat.godaemon/remote/cmd/cmuxd-remote/tmux_store_lock_test.go
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This reverts commit cadea32.
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…emon-assets # Conflicts: # cmux.xcodeproj/project.pbxproj
…emon-assets # Conflicts: # .github/workflows/nightly.yml # scripts/prune_nightly_release_assets.py
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Fixes #12648.
Summary
Released apps still need
cmuxd-remotefor SSH bootstrap, but the daemon, embedded manifest, and release uploads were removed. Restore the supported daemon and reject releases whose app manifest and artifact checksums disagree.Trade-offs: restoring the daemon also restores the CLI, persistent PTYs, proxying, and relay code the shipped client still requires. A daemon-free migration must replace those together. Unpublished dogfood bundles grow to include the four compressed platform assets. No relay methods are added to the allowlist.
Testing
e604d8d5d1failed the two bundled-asset integrity regressions in CI; the fix passes all 12 verifier cases.a8989a2e08as8c43c63db1. The redAgent notification semanticscheck on that head was not caused by this PR: the job never ran a test, it failed compilingcmuxTests/MobilePairingConnectionTransitionTests.swiftagainst aMobilePairingModelinitializer thatmaindid not have yet when this branch last merged it.mainhas since fixed that (Cloud: keep terminal creation targets and errors visible #12478, Fix SSH PTY terminal ownership and reject mismatched daemons #12726), and this branch never touched either file.Localization audit: the Swift changes introduce no new literal app UI/help/error text; failures use Foundation’s localized Cocoa errors. Added packaging-script diagnostics are internal release tooling.
Runtime verification
App-level SSH was exercised on tagged Debug builds against a reachable macOS arm64 host (
cmux-mac-mini), covering both ways a build obtains its daemon.Bundled-manifest path (what unpublished fast/branch nightlies use), on
a8989a2e08. Local-build fallback disabled, embedded manifest0.64.24-verify.a8989a2e08whose GitHub release URL does not exist, so a network download could not have succeeded.remote.build.downloadedlogged 189 ms after the platform probe, i.e. a local decode ofResources/remote-daemons/*.deflate. All four bundled assets decode withNSData.decompressed(using: .zlib)and match the embedded SHA-256s.remote.bootstrap.readyin 6.2 s with all seven capabilities the client requires; proxy ready; commands execute on the remote host.cmux pingfrom the remote shell reaches the local app; reading an unowned local workspace from the remote returnsremote_relay_denied.Dev
go buildfallback path, onee2c84bcd1(this branch merged withmainthrough #12726; verified after this PR had merged, and identical tomainat8c43c63db1in every SSH, daemon, and CLI file). Daemon0.64.24-dev-45a38ea95985built fromdaemon/remote, uploaded, and handshaken.0.64.24, Debug build, 12-hex dev fingerprint).-icanon -isig -echo -icrnl -ixon -opost). An arrow-key select menu with focus reporting moves per keypress (reads1b5b49,1b5b42,1b5b42,0d, no literal^[[on screen), and Ctrl-C interrupts the remote program while the attach process survives.Release contract vs. #12726's exact-version admission. The CLI now rejects an attach unless the daemon's
helloversion equals the app'sCFBundleShortVersionString(Debug builds also accept<version>-dev-<12 hex>). This PR already pins that:build_remote_daemon_release_assets.shstampsmain.versionfrom the same--versionit writes into the manifest,tests/test_remote_daemon_release_assets.pyruns the built native artifact'shelloand asserts that version for stable, nightly, and rc, andverify_remote_daemon_release.pyrequiresmanifest.appVersion == CFBundleShortVersionStringon the signed bundle.Not covered at runtime. Only a
darwin-arm64host was exercised;darwin-amd64and both Linux targets are covered by the build and checksum tests, not by a live session. The reporter-style Darwin x86_64 host was offline during testing. The proxy check shows the tunnel carries traffic but does not distinguish egress host. The release and nightly workflows have not yet been observed running end to end with these steps.Tagged dev builds were launched locally for this dogfood. This PR merged at 2026-09-17T08:00Z; the
ee2c84bcd1verification above completed after that. Onmainat8c43c63db1the nightly build guard, the nightly prune guard, and the 12 daemon release verification tests pass.