记录桌面壳下载阻断事件

桌面壳阻断 WebView 下载请求时记录宿主诊断日志

补充桌面 WebView 下载阻断 handler 单测

扩展桌面壳配置门禁防止下载阻断静默回退

修正桌面壳回放门禁的格式敏感匹配

apps/desktop-shell/scripts/check-config.mjs

@@ -2674,7 +2674,11 @@ const requiredRustHostSnippets = [
   'DownloadEvent',
   'should_allow_desktop_webview_download',
   'DownloadEvent::Requested { .. } => false',
-  '.on_download(|_webview, event| should_allow_desktop_webview_download(&event))',
+  'handle_desktop_webview_download',
+  'log_desktop_webview_download_blocked',
+  'desktop host event blocked for webview.download',
+  'desktop_webview_download_handler_logs_blocked_requests',
+  '.on_download(|_webview, event| handle_desktop_webview_download(&event))',
   'NewWindowResponse::Deny',
   'HOST_BRIDGE_METHODS',
   'HOST_BRIDGE_REQUEST_ID_MAX_LENGTH',
@@ -2712,7 +2716,7 @@ for (const snippet of [
   'prepare_host_bridge_request(&mut invalid).expect("invalid envelope")',
   'assert_eq!(response.id, "request-1");',
   'assert_eq!(response.error.expect("error").code, "invalid_request");',
-  'match replay_state.reserve("request-1")',
+  '.reserve("request-1")',
   'invalid request must not reserve replay slot',
 ]) {
   if (!rustHostSource.includes(snippet)) {

apps/desktop-shell/src-tauri/src/app.rs

@@ -8,13 +8,12 @@ use crate::shell::tray::{
     resolve_desktop_single_instance_action, show_main_window, DesktopSingleInstanceAction,
 };
 use crate::shell::webview::{
-    desktop_window_config_with_runtime_platform, emit_current_desktop_lifecycle_event,
-    desktop_external_navigation_url, log_desktop_host_event_result,
-    open_desktop_external_navigation,
+    desktop_external_navigation_url, desktop_window_config_with_runtime_platform,
+    emit_current_desktop_lifecycle_event, handle_desktop_webview_download,
+    log_desktop_host_event_result, open_desktop_external_navigation,
     open_normalized_desktop_external_url, register_desktop_file_drop_events,
     register_desktop_lifecycle_events, register_desktop_navigation_events,
-    replay_desktop_webview_state,
-    should_allow_desktop_webview_download, should_allow_desktop_webview_navigation,
+    replay_desktop_webview_state, should_allow_desktop_webview_navigation,
     should_replay_desktop_webview_state_on_page_load,
 };
 use crate::shell::window_state::desktop_window_state_plugin;
@@ -102,7 +101,7 @@ pub(crate) fn run() {
                         replay_desktop_webview_state(&window);
                     }
                 })
-                .on_download(|_webview, event| should_allow_desktop_webview_download(&event))
+                .on_download(|_webview, event| handle_desktop_webview_download(&event))
                 .build()?;
             register_desktop_window_close_events(&window, tray_registered);
             register_desktop_lifecycle_events(&window);

apps/desktop-shell/src-tauri/src/shell/navigation.rs

@@ -179,6 +179,19 @@ pub(crate) fn should_allow_desktop_webview_download(event: &DownloadEvent<'_>) -
     }
 }
 
+fn log_desktop_webview_download_blocked(url: &Url) -> bool {
+    eprintln!("desktop host event blocked for webview.download: {url}");
+    false
+}
+
+pub(crate) fn handle_desktop_webview_download(event: &DownloadEvent<'_>) -> bool {
+    if let DownloadEvent::Requested { url, .. } = event {
+        log_desktop_webview_download_blocked(url);
+    }
+
+    should_allow_desktop_webview_download(event)
+}
+
 pub(crate) fn normalize_native_page_url(raw_url: &str) -> Option<Url> {
     let url = raw_url.trim();
     if url.is_empty() || url.chars().any(char::is_control) {
@@ -283,6 +296,19 @@ mod tests {
         assert!(should_allow_desktop_webview_download(&finished));
     }
 
+    #[test]
+    fn desktop_webview_download_handler_logs_blocked_requests() {
+        let mut destination = std::env::temp_dir().join("genarrative-webview-download.txt");
+        let url = Url::parse("https://app.genarrative.world/download.txt").expect("download url");
+        let requested = DownloadEvent::Requested {
+            url: url.clone(),
+            destination: &mut destination,
+        };
+
+        assert!(!log_desktop_webview_download_blocked(&url));
+        assert!(!handle_desktop_webview_download(&requested));
+    }
+
     #[test]
     fn native_page_url_normalization_allows_same_origin_routes() {
         let route =

apps/desktop-shell/src-tauri/src/shell/webview.rs

@@ -5,9 +5,9 @@ pub(crate) use crate::shell::lifecycle::{
     should_replay_desktop_webview_state_on_page_load,
 };
 pub(crate) use crate::shell::navigation::{
-    desktop_external_navigation_url, normalize_external_url, normalize_native_page_url,
-    open_desktop_external_navigation, open_normalized_desktop_external_url,
-    register_desktop_navigation_events, should_allow_desktop_webview_download,
+    desktop_external_navigation_url, handle_desktop_webview_download, normalize_external_url,
+    normalize_native_page_url, open_desktop_external_navigation,
+    open_normalized_desktop_external_url, register_desktop_navigation_events,
     should_allow_desktop_webview_navigation,
 };
 pub(crate) use crate::shell::network::resolve_desktop_network_status;