nevaforget/moonlock
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fix: quit in ::unlocked instead of after unlock() (v0.6.17)

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The real cause of the unlock SIGSEGV: gtk4-session-lock destroys the lock
windows itself when the lock ends (per its header), so unlock_callback's
`unlock(); app.quit();` destroyed them a second time — surface already gone
→ gdk_surface_get_display NULL → crash in gtk_window_destroy. Reproduces on
a plain single-monitor lock/unlock, no suspend needed.

unlock_callback now calls only unlock(); a new connect_unlocked handler
quits the app after the library finishes teardown. Mirrors the upstream
examples/simple.rs exactly.

Reverts the v0.6.15/v0.6.16 monitor-pruning + LockscreenHandles.monitor:
it was a misdiagnosis (the crash is monitor-independent) and manually
manipulated library-managed lock windows, which the upstream example
explicitly warns against. Monitor removal is left to the library.
This commit is contained in:
nevaforget
2026-06-02 17:19:09 +02:00
parent 215ab0a984
commit e51a847d48
6 changed files with 22 additions and 34 deletions
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CLAUDE.md
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@@ -42,7 +42,7 @@ LD_PRELOAD=/usr/lib/libgtk4-layer-shell.so ./target/release/moonlock
- `i18n.rs` — Locale-Erkennung (OnceLock-cached) und String-Tabellen (DE/EN), faillock_warning mit konfigurierbarem max_attempts
- `config.rs` — TOML-Config (background_path, background_blur clamped [0,200], fingerprint_enabled als Option<bool>) + Wallpaper-Fallback + Symlink-Rejection via symlink_metadata + Parse-Error-Logging
- `lockscreen.rs` — GTK4 UI via LockscreenHandles, PAM-Auth via gio::spawn_blocking mit 30s Timeout und Generation Counter, FP-Success ruft unlock_callback direkt (PAM-Stack ohne account-Modul, Lockout via auth-Pfad und MAX_FP_ATTEMPTS), Zeroizing<String> für Passwort, Power-Confirm, GPU-Blur via GskBlurNode (Downscale auf max 1920px), Blur/Avatar-Cache für Multi-Monitor
- `main.rs` — Entry Point, Panic-Hook (vor Logging), Root-Check, ext-session-lock-v1 (Pflicht in Release), Monitor-Hotplug via `connect_monitor`-Signal (v1_2) + Pruning toter Fenster bei Monitor-Removal (`display.monitors()` items_changed → `remove_window`) gegen Resume-Unlock-SIGSEGV, shared Blur/Avatar-Caches in Rc, systemd-Journal-Logging, Debug-Level per `MOONLOCK_DEBUG` Env-Var, async fprintd-Init nach window.present()
- `main.rs` — Entry Point, Panic-Hook (vor Logging), Root-Check, ext-session-lock-v1 (Pflicht in Release), Monitor-Hotplug via `connect_monitor`-Signal (v1_2), Unlock via `unlock()` + `connect_unlocked`→`app.quit()` (Lib zerstört die Lock-Fenster selbst beim Lock-Ende — kein eigenes Destroy/quit, sonst Double-Destroy-SIGSEGV), shared Blur/Avatar-Caches in Rc, systemd-Journal-Logging, Debug-Level per `MOONLOCK_DEBUG` Env-Var, async fprintd-Init nach window.present()
## Sicherheit