fix: audit fixes — double-unlock guard, PAM OOM code, GPU blur, async fp stop (v0.5.1)

Security: prevent double unlock() when PAM and fingerprint succeed
simultaneously (ext-session-lock protocol error). Fix PAM callback
returning PAM_AUTH_ERR instead of PAM_BUF_ERR on calloc OOM.

Performance: replace CPU-side Gaussian blur (image crate) with GPU blur
via GskBlurNode + GskRenderer::render_texture(). Eliminates 500ms-2s
main-thread blocking on cold cache for 4K wallpapers. Remove image and
dirs dependencies (~15 transitive crates). Make fingerprint stop()
fire-and-forget async to avoid 6s UI block after successful auth.
This commit is contained in:
nevaforget 2026-03-28 22:06:38 +01:00
parent 48706e5a29
commit 4026f6dafa
8 changed files with 87 additions and 447 deletions

View File

@ -38,12 +38,12 @@ LD_PRELOAD=/usr/lib/libgtk4-layer-shell.so ./target/release/moonlock
## Architektur
- `auth.rs` — PAM-Authentifizierung via Raw FFI (unsafe extern "C" conv callback, msg_style-aware, Zeroizing<Vec<u8>>)
- `fingerprint.rs` — fprintd D-Bus Listener, async init/claim/verify via gio futures, sync stop with 3s timeout, on_exhausted callback after MAX_FP_ATTEMPTS
- `fingerprint.rs` — fprintd D-Bus Listener, async init/claim/verify via gio futures, async fire-and-forget stop, on_exhausted callback after MAX_FP_ATTEMPTS
- `users.rs` — Aktuellen User via nix getuid, Avatar-Loading mit Symlink-Rejection
- `power.rs` — Reboot/Shutdown via /usr/bin/systemctl
- `i18n.rs` — Locale-Erkennung (OnceLock-cached) und String-Tabellen (DE/EN), faillock_warning mit konfigurierbarem max_attempts
- `config.rs` — TOML-Config (background_path, fingerprint_enabled als Option<bool>) + Wallpaper-Fallback
- `lockscreen.rs` — GTK4 UI via LockscreenHandles, PAM-Auth via gio::spawn_blocking, FP-Label/Start separat verdrahtet, Zeroizing<String> für Passwort, Power-Confirm
- `config.rs` — TOML-Config (background_path, background_blur, fingerprint_enabled als Option<bool>) + Wallpaper-Fallback
- `lockscreen.rs` — GTK4 UI via LockscreenHandles, PAM-Auth via gio::spawn_blocking, FP-Label/Start separat verdrahtet, Zeroizing<String> für Passwort, Power-Confirm, GPU-Blur via GskBlurNode
- `main.rs` — Entry Point, Panic-Hook, Root-Check, ext-session-lock-v1 (Pflicht in Release), Multi-Monitor, systemd-Journal-Logging, async fprintd-Init nach window.present()
## Sicherheit

219
Cargo.lock generated
View File

@ -2,12 +2,6 @@
# It is not intended for manual editing.
version = 4
[[package]]
name = "adler2"
version = "2.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
[[package]]
name = "anyhow"
version = "1.0.102"
@ -26,18 +20,6 @@ version = "2.11.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "843867be96c8daad0d758b57df9392b6d8d271134fce549de6ce169ff98a92af"
[[package]]
name = "bytemuck"
version = "1.25.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c8efb64bd706a16a1bdde310ae86b351e4d21550d98d056f22f8a7f7a2183fec"
[[package]]
name = "byteorder-lite"
version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8f1fe948ff07f4bd06c30984e69f5b4899c516a3ef74f34df92a2df2ab535495"
[[package]]
name = "cairo-rs"
version = "0.22.0"
@ -83,36 +65,6 @@ version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
[[package]]
name = "crc32fast"
version = "1.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"cfg-if",
]
[[package]]
name = "dirs"
version = "6.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"dirs-sys",
]
[[package]]
name = "dirs-sys"
version = "0.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
dependencies = [
"libc",
"option-ext",
"redox_users",
"windows-sys",
]
[[package]]
name = "equivalent"
version = "1.0.2"
@ -135,15 +87,6 @@ version = "2.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"simd-adler32",
]
[[package]]
name = "field-offset"
version = "0.3.6"
@ -154,16 +97,6 @@ dependencies = [
"rustc_version",
]
[[package]]
name = "flate2"
version = "1.1.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "843fba2746e448b37e26a819579957415c8cef339bf08564fe8b7ddbd959573c"
dependencies = [
"crc32fast",
"miniz_oxide",
]
[[package]]
name = "foldhash"
version = "0.1.5"
@ -290,17 +223,6 @@ dependencies = [
"system-deps",
]
[[package]]
name = "getrandom"
version = "0.2.17"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
dependencies = [
"cfg-if",
"libc",
"wasi",
]
[[package]]
name = "getrandom"
version = "0.4.2"
@ -588,21 +510,6 @@ version = "2.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3d3067d79b975e8844ca9eb072e16b31c3c1c36928edf9c6789548c524d0d954"
[[package]]
name = "image"
version = "0.25.10"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "85ab80394333c02fe689eaf900ab500fbd0c2213da414687ebf995a65d5a6104"
dependencies = [
"bytemuck",
"byteorder-lite",
"moxcms",
"num-traits",
"png",
"zune-core",
"zune-jpeg",
]
[[package]]
name = "indexmap"
version = "2.13.0"
@ -639,15 +546,6 @@ version = "0.2.183"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b5b646652bf6661599e1da8901b3b9522896f01e736bad5f723fe7a3a27f899d"
[[package]]
name = "libredox"
version = "0.1.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7ddbf48fd451246b1f8c2610bd3b4ac0cc6e149d89832867093ab69a17194f08"
dependencies = [
"libc",
]
[[package]]
name = "linux-raw-sys"
version = "0.12.1"
@ -675,29 +573,18 @@ dependencies = [
"autocfg",
]
[[package]]
name = "miniz_oxide"
version = "0.8.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
dependencies = [
"adler2",
"simd-adler32",
]
[[package]]
name = "moonlock"
version = "0.5.0"
dependencies = [
"dirs",
"gdk-pixbuf",
"gdk4",
"gio",
"glib",
"glib-build-tools",
"graphene-rs",
"gtk4",
"gtk4-session-lock",
"image",
"libc",
"log",
"nix",
@ -708,16 +595,6 @@ dependencies = [
"zeroize",
]
[[package]]
name = "moxcms"
version = "0.8.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bb85c154ba489f01b25c0d36ae69a87e4a1c73a72631fc6c0eb6dde34a73e44b"
dependencies = [
"num-traits",
"pxfm",
]
[[package]]
name = "nix"
version = "0.29.0"
@ -730,27 +607,12 @@ dependencies = [
"libc",
]
[[package]]
name = "num-traits"
version = "0.2.19"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
dependencies = [
"autocfg",
]
[[package]]
name = "once_cell"
version = "1.21.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
[[package]]
name = "option-ext"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
[[package]]
name = "pango"
version = "0.22.0"
@ -787,19 +649,6 @@ version = "0.3.32"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7edddbd0b52d732b21ad9a5fab5c704c14cd949e5e9a1ec5929a24fded1b904c"
[[package]]
name = "png"
version = "0.18.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "60769b8b31b2a9f263dae2776c37b1b28ae246943cf719eb6946a1db05128a61"
dependencies = [
"bitflags",
"crc32fast",
"fdeflate",
"flate2",
"miniz_oxide",
]
[[package]]
name = "prettyplease"
version = "0.2.37"
@ -828,12 +677,6 @@ dependencies = [
"unicode-ident",
]
[[package]]
name = "pxfm"
version = "0.1.28"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b5a041e753da8b807c9255f28de81879c78c876392ff2469cde94799b2896b9d"
[[package]]
name = "quote"
version = "1.0.45"
@ -849,17 +692,6 @@ version = "6.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
[[package]]
name = "redox_users"
version = "0.5.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a4e608c6638b9c18977b00b475ac1f28d14e84b27d8d42f70e0bf1e3dec127ac"
dependencies = [
"getrandom 0.2.17",
"libredox",
"thiserror",
]
[[package]]
name = "rustc_version"
version = "0.4.1"
@ -949,12 +781,6 @@ dependencies = [
"serde_core",
]
[[package]]
name = "simd-adler32"
version = "0.3.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "703d5c7ef118737c72f1af64ad2f6f8c5e1921f818cdcb97b8fe6fc69bf66214"
[[package]]
name = "slab"
version = "0.4.12"
@ -1014,32 +840,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd"
dependencies = [
"fastrand",
"getrandom 0.4.2",
"getrandom",
"once_cell",
"rustix",
"windows-sys",
]
[[package]]
name = "thiserror"
version = "2.0.18"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4"
dependencies = [
"thiserror-impl",
]
[[package]]
name = "thiserror-impl"
version = "2.0.18"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "toml"
version = "0.8.23"
@ -1159,12 +965,6 @@ version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "03c2856837ef78f57382f06b2b8563a2f512f7185d732608fd9176cb3b8edf0e"
[[package]]
name = "wasi"
version = "0.11.1+wasi-snapshot-preview1"
source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
name = "wasip2"
version = "1.0.2+wasi-0.2.9"
@ -1369,18 +1169,3 @@ name = "zmij"
version = "1.0.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
[[package]]
name = "zune-core"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cb8a0807f7c01457d0379ba880ba6322660448ddebc890ce29bb64da71fb40f9"
[[package]]
name = "zune-jpeg"
version = "0.5.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "27bc9d5b815bc103f142aa054f561d9187d191692ec7c2d1e2b4737f8dbd7296"
dependencies = [
"zune-core",
]

View File

@ -1,6 +1,6 @@
[package]
name = "moonlock"
version = "0.5.0"
version = "0.5.1"
edition = "2024"
description = "A secure Wayland lockscreen with GTK4, PAM and fingerprint support"
license = "MIT"
@ -14,11 +14,10 @@ gdk-pixbuf = "0.22"
gio = "0.22"
toml = "0.8"
serde = { version = "1", features = ["derive"] }
dirs = "6"
graphene-rs = { version = "0.22", package = "graphene-rs" }
nix = { version = "0.29", features = ["user"] }
zeroize = { version = "1", features = ["derive"] }
libc = "0.2"
image = { version = "0.25", default-features = false, features = ["jpeg", "png"] }
log = "0.4"
systemd-journal-logger = "2.2"

View File

@ -2,7 +2,14 @@
Architectural and design decisions for Moonlock, in reverse chronological order.
## 2026-03-28 Optional background blur via `image` crate
## 2026-03-28 GPU blur via GskBlurNode replaces CPU blur
- **Who**: Nyx, Dom
- **Why**: CPU-side Gaussian blur (`image` crate) blocked the GTK main thread for 500ms2s on 4K wallpapers at cold cache. Disk cache mitigated repeat starts but added ~100 lines of complexity.
- **Tradeoffs**: GPU blur quality is slightly different (box-blur approximation vs true Gaussian), acceptable for wallpaper. Removes `image` and `dirs` dependencies entirely. No disk cache needed.
- **How**: `Snapshot::push_blur()` + `GskRenderer::render_texture()` on `connect_realize`. Blur happens once on the GPU when the widget gets its renderer, producing a concrete `gdk::Texture`. Zero startup latency.
## 2026-03-28 Optional background blur via `image` crate (superseded)
- **Who**: Nyx, Dom
- **Why**: Consistent with moonset/moongreet — blurred wallpaper as lockscreen background is a common UX pattern

View File

@ -8,6 +8,7 @@ use zeroize::Zeroizing;
// PAM return codes
const PAM_SUCCESS: i32 = 0;
const PAM_BUF_ERR: i32 = 5;
const PAM_AUTH_ERR: i32 = 7;
// PAM message styles
const PAM_PROMPT_ECHO_OFF: libc::c_int = 1;
@ -73,7 +74,7 @@ unsafe extern "C" fn pam_conv_callback(
// Safety: appdata_ptr was set to a valid *const CString in authenticate()
let password = appdata_ptr as *const CString;
if password.is_null() {
return 7; // PAM_AUTH_ERR
return PAM_AUTH_ERR;
}
// Safety: calloc returns zeroed memory for num_msg PamResponse structs.
@ -84,7 +85,7 @@ unsafe extern "C" fn pam_conv_callback(
) as *mut PamResponse;
if resp_array.is_null() {
return 7; // PAM_AUTH_ERR
return PAM_BUF_ERR;
}
for i in 0..num_msg as isize {

View File

@ -290,7 +290,8 @@ impl FingerprintListener {
}
/// Stop listening and release the device.
/// Uses a short timeout (3s) to avoid blocking the UI indefinitely.
/// Signal disconnect is synchronous to prevent further callbacks.
/// D-Bus cleanup (VerifyStop + Release) is fire-and-forget to avoid blocking the UI.
pub fn stop(&mut self) {
if !self.running {
return;
@ -301,20 +302,15 @@ impl FingerprintListener {
if let Some(id) = self.signal_id.take() {
proxy.disconnect(id);
}
let _ = proxy.call_sync(
"VerifyStop",
None,
gio::DBusCallFlags::NONE,
3000,
gio::Cancellable::NONE,
);
let _ = proxy.call_sync(
"Release",
None,
gio::DBusCallFlags::NONE,
3000,
gio::Cancellable::NONE,
);
let proxy = proxy.clone();
glib::spawn_future_local(async move {
let _ = proxy
.call_future("VerifyStop", None, gio::DBusCallFlags::NONE, 3000)
.await;
let _ = proxy
.call_future("Release", None, gio::DBusCallFlags::NONE, 3000)
.await;
});
}
}

View File

@ -4,16 +4,12 @@
use gdk4 as gdk;
use gdk_pixbuf::Pixbuf;
use glib::clone;
use graphene_rs as graphene;
use gtk4::prelude::*;
use gtk4::{self as gtk, gio};
use image::imageops;
use std::cell::RefCell;
use std::fs;
use std::io::Write;
use std::os::unix::fs::OpenOptionsExt;
use std::path::{Path, PathBuf};
use std::path::Path;
use std::rc::Rc;
use std::time::SystemTime;
use zeroize::Zeroizing;
@ -47,7 +43,7 @@ struct LockscreenState {
/// Fingerprint is not initialized here — use `wire_fingerprint()` after async init.
pub fn create_lockscreen_window(
bg_texture: &gdk::Texture,
_config: &Config,
config: &Config,
app: &gtk::Application,
unlock_callback: Rc<dyn Fn()>,
) -> LockscreenHandles {
@ -87,7 +83,7 @@ pub fn create_lockscreen_window(
window.set_child(Some(&overlay));
// Background wallpaper
let background = create_background_picture(bg_texture);
let background = create_background_picture(bg_texture, config.background_blur);
overlay.set_child(Some(&background));
// Centered vertical box
@ -419,11 +415,11 @@ pub fn start_fingerprint(
}
/// Load the wallpaper as a texture once, for sharing across all windows.
/// When `blur_radius` is `Some(sigma)` with sigma > 0, a Gaussian blur is applied.
pub fn load_background_texture(bg_path: &Path, blur_radius: Option<f32>) -> gdk::Texture {
/// Blur is applied at render time via GPU (GskBlurNode), not here.
pub fn load_background_texture(bg_path: &Path) -> gdk::Texture {
let fallback = "/dev/moonarch/moonlock/wallpaper.jpg";
let texture = if bg_path.starts_with("/dev/moonarch/moonlock") {
if bg_path.starts_with("/dev/moonarch/moonlock") {
let resource_path = bg_path.to_str().unwrap_or(fallback);
gdk::Texture::from_resource(resource_path)
} else {
@ -431,152 +427,56 @@ pub fn load_background_texture(bg_path: &Path, blur_radius: Option<f32>) -> gdk:
gdk::Texture::from_file(&file).unwrap_or_else(|_| {
gdk::Texture::from_resource(fallback)
})
};
match blur_radius {
Some(sigma) if sigma > 0.0 => load_blurred_with_cache(bg_path, &texture, sigma),
_ => texture,
}
}
// -- Blur cache ----------------------------------------------------------------
const CACHE_PNG: &str = "blur-cache.png";
const CACHE_META: &str = "blur-cache.meta";
fn blur_cache_dir() -> Option<PathBuf> {
dirs::cache_dir().map(|d| d.join("moonlock"))
}
/// Build the cache key string for the current wallpaper + sigma.
fn build_cache_meta(bg_path: &Path, sigma: f32) -> Option<String> {
if bg_path.starts_with("/dev/moonarch/") {
let binary = std::env::current_exe().ok()?;
let binary_mtime = fs::metadata(&binary)
.ok()?
.modified()
.ok()?
.duration_since(SystemTime::UNIX_EPOCH)
.ok()?
.as_secs();
Some(format!(
"path={}\nbinary_mtime={}\nsigma={}\n",
bg_path.display(), binary_mtime, sigma,
))
} else {
let meta = fs::metadata(bg_path).ok()?;
let mtime = meta
.modified()
.ok()?
.duration_since(SystemTime::UNIX_EPOCH)
.ok()?
.as_secs();
Some(format!(
"path={}\nsize={}\nmtime={}\nsigma={}\n",
bg_path.display(), meta.len(), mtime, sigma,
))
}
}
/// Try to load a cached blurred texture if the cache key matches.
fn load_cached_blur(cache_dir: &Path, expected_meta: &str) -> Option<gdk::Texture> {
let stored_meta = fs::read_to_string(cache_dir.join(CACHE_META)).ok()?;
if stored_meta != expected_meta {
log::debug!("Blur cache meta mismatch, will re-blur");
return None;
}
let file = gio::File::for_path(cache_dir.join(CACHE_PNG));
match gdk::Texture::from_file(&file) {
Ok(texture) => {
log::debug!("Loaded blurred wallpaper from cache");
Some(texture)
}
Err(e) => {
log::debug!("Failed to load cached blur PNG: {e}");
None
}
}
}
/// Save a blurred texture to the cache directory.
fn save_blur_cache(cache_dir: &Path, texture: &gdk::Texture, meta: &str) {
if let Err(e) = save_blur_cache_inner(cache_dir, texture, meta) {
log::debug!("Failed to save blur cache: {e}");
}
}
fn save_blur_cache_inner(
cache_dir: &Path,
texture: &gdk::Texture,
meta: &str,
) -> Result<(), Box<dyn std::error::Error>> {
fs::create_dir_all(cache_dir)?;
let png_bytes = texture.save_to_png_bytes();
let mut f = fs::OpenOptions::new()
.create(true).write(true).truncate(true).mode(0o600)
.open(cache_dir.join(CACHE_PNG))?;
f.write_all(&png_bytes)?;
let mut f = fs::OpenOptions::new()
.create(true).write(true).truncate(true).mode(0o600)
.open(cache_dir.join(CACHE_META))?;
f.write_all(meta.as_bytes())?;
log::debug!("Saved blur cache to {}", cache_dir.display());
Ok(())
}
/// Load blurred texture, using disk cache when available.
fn load_blurred_with_cache(bg_path: &Path, texture: &gdk::Texture, sigma: f32) -> gdk::Texture {
if let Some(cache_dir) = blur_cache_dir() {
if let Some(meta) = build_cache_meta(bg_path, sigma) {
if let Some(cached) = load_cached_blur(&cache_dir, &meta) {
return cached;
}
let blurred = apply_blur(texture, sigma);
save_blur_cache(&cache_dir, &blurred, &meta);
return blurred;
}
}
apply_blur(texture, sigma)
}
// -- Blur implementation -------------------------------------------------------
/// Apply Gaussian blur to a texture and return a blurred texture.
fn apply_blur(texture: &gdk::Texture, sigma: f32) -> gdk::Texture {
let width = texture.width() as u32;
let height = texture.height() as u32;
let stride = width as usize * 4;
let mut pixel_data = vec![0u8; stride * height as usize];
texture.download(&mut pixel_data, stride);
let img = image::RgbaImage::from_raw(width, height, pixel_data)
.expect("pixel buffer size matches texture dimensions");
let blurred = imageops::blur(&image::DynamicImage::ImageRgba8(img), sigma);
let bytes = glib::Bytes::from(blurred.as_raw());
let mem_texture = gdk::MemoryTexture::new(
width as i32,
height as i32,
gdk::MemoryFormat::B8g8r8a8Premultiplied,
&bytes,
stride,
);
mem_texture.upcast()
}
/// Create a Picture widget for the wallpaper background from a shared texture.
fn create_background_picture(texture: &gdk::Texture) -> gtk::Picture {
/// Create a Picture widget for the wallpaper background.
/// When `blur_radius` is `Some(sigma)` with sigma > 0, blur is applied via GPU
/// (GskBlurNode). The blur is rendered to a concrete texture on `realize` (when
/// the GPU renderer is available), avoiding lazy-render artifacts.
fn create_background_picture(texture: &gdk::Texture, blur_radius: Option<f32>) -> gtk::Picture {
let background = gtk::Picture::for_paintable(texture);
background.set_content_fit(gtk::ContentFit::Cover);
background.set_hexpand(true);
background.set_vexpand(true);
if let Some(sigma) = blur_radius {
if sigma > 0.0 {
let texture = texture.clone();
background.connect_realize(move |picture| {
if let Some(blurred) = render_blurred_texture(picture, &texture, sigma) {
picture.set_paintable(Some(&blurred));
}
});
}
}
background
}
/// Render a blurred texture using the widget's GPU renderer.
/// Returns None if the renderer is not available.
fn render_blurred_texture(
widget: &impl IsA<gtk::Widget>,
texture: &gdk::Texture,
sigma: f32,
) -> Option<gdk::Texture> {
let native = widget.native()?;
let renderer = native.renderer()?;
let snapshot = gtk::Snapshot::new();
let bounds = graphene::Rect::new(
0.0,
0.0,
texture.width() as f32,
texture.height() as f32,
);
snapshot.push_blur(sigma as f64);
snapshot.append_texture(texture, &bounds);
snapshot.pop();
let node = snapshot.to_node()?;
Some(renderer.render_texture(&node, None))
}
/// Load an image file and set it as the avatar.
fn set_avatar_from_file(image: &gtk::Image, path: &Path) {
match Pixbuf::from_file_at_scale(path.to_str().unwrap_or(""), AVATAR_SIZE, AVATAR_SIZE, true) {
@ -727,60 +627,4 @@ mod tests {
fn avatar_size_matches_css() {
assert_eq!(AVATAR_SIZE, 128);
}
// -- Blur cache tests --
#[test]
fn build_cache_meta_for_file() {
let dir = tempfile::tempdir().unwrap();
let file = dir.path().join("wallpaper.jpg");
fs::write(&file, b"fake image").unwrap();
let meta = build_cache_meta(&file, 20.0);
assert!(meta.is_some());
let meta = meta.unwrap();
assert!(meta.contains("path="));
assert!(meta.contains("size=10"));
assert!(meta.contains("sigma=20"));
}
#[test]
fn build_cache_meta_for_gresource() {
let path = Path::new("/dev/moonarch/moonlock/wallpaper.jpg");
let meta = build_cache_meta(path, 15.0);
assert!(meta.is_some());
let meta = meta.unwrap();
assert!(meta.contains("binary_mtime="));
assert!(meta.contains("sigma=15"));
assert!(!meta.contains("size="));
}
#[test]
fn build_cache_meta_missing_file() {
let meta = build_cache_meta(Path::new("/nonexistent/wallpaper.jpg"), 20.0);
assert!(meta.is_none());
}
#[test]
fn cache_meta_mismatch_returns_none() {
let dir = tempfile::tempdir().unwrap();
fs::write(
dir.path().join(CACHE_META),
"path=/old.jpg\nsize=100\nmtime=1\nsigma=20\n",
).unwrap();
let result = load_cached_blur(
dir.path(),
"path=/new.jpg\nsize=200\nmtime=2\nsigma=20\n",
);
assert!(result.is_none());
}
#[test]
fn cache_missing_meta_returns_none() {
let dir = tempfile::tempdir().unwrap();
let result = load_cached_blur(
dir.path(),
"path=/any.jpg\nsize=1\nmtime=1\nsigma=20\n",
);
assert!(result.is_none());
}
}

View File

@ -13,7 +13,7 @@ use gdk4 as gdk;
use gtk4::prelude::*;
use gtk4::{self as gtk, gio};
use gtk4_session_lock;
use std::cell::RefCell;
use std::cell::{Cell, RefCell};
use std::rc::Rc;
use crate::fingerprint::FingerprintListener;
@ -41,7 +41,7 @@ fn activate(app: &gtk::Application) {
let config = config::load_config(None);
let bg_path = config::resolve_background_path(&config);
let bg_texture = lockscreen::load_background_texture(&bg_path, config.background_blur);
let bg_texture = lockscreen::load_background_texture(&bg_path);
if gtk4_session_lock::is_supported() {
activate_with_session_lock(app, &display, &bg_texture, &config);
@ -70,10 +70,18 @@ fn activate_with_session_lock(
let monitors = display.monitors();
// Shared unlock callback — unlocks session and quits
// Shared unlock callback — unlocks session and quits.
// Guard prevents double-unlock if PAM and fingerprint succeed simultaneously.
let lock_clone = lock.clone();
let app_clone = app.clone();
let already_unlocked = Rc::new(Cell::new(false));
let au = already_unlocked.clone();
let unlock_callback: Rc<dyn Fn()> = Rc::new(move || {
if au.get() {
log::debug!("Unlock already triggered, ignoring duplicate");
return;
}
au.set(true);
lock_clone.unlock();
app_clone.quit();
});