[evince/mcatanzaro/#1333] Remove ability to launch actions

[Michael Catanzaro <mcatanzaro src gnome org>]

commit e85a79a355ff40149669611812695aad87a1af8d
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Tue Sep 22 10:23:41 2020 -0500

    Remove ability to launch actions
    
    This is basically only ever used by malware. Like PDF JavaScript, it's
    more dangerous than useful.
    
    Fixes #1333

 shell/ev-window.c | 59 +++----------------------------------------------------
 1 file changed, 3 insertions(+), 56 deletions(-)
---
diff --git a/shell/ev-window.c b/shell/ev-window.c
index 81a6ede1..69602ca6 100644
--- a/shell/ev-window.c
+++ b/shell/ev-window.c
@@ -6697,62 +6697,9 @@ window_configure_event_cb (EvWindow *window, GdkEventConfigure *event, gpointer
 static void
 launch_action (EvWindow *window, EvLinkAction *action)
 {
-       EvWindowPrivate *priv = GET_PRIVATE (window);
-       const char *filename = ev_link_action_get_filename (action);
-       GAppInfo *app_info;
-       GFile *file;
-       GList file_list = {NULL};
-       GdkAppLaunchContext *context;
-       GdkScreen *screen;
-       GError *error = NULL;
-
-       if (filename == NULL)
-               return;
-
-       if (g_path_is_absolute (filename)) {
-               file = g_file_new_for_path (filename);
-       } else {
-               GFile *base_file;
-               gchar *dir;
-
-               dir = g_path_get_dirname (priv->uri);
-               base_file = g_file_new_for_uri (dir);
-               g_free (dir);
-               
-               file = g_file_resolve_relative_path (base_file, filename);
-               g_object_unref (base_file);
-       }
-
-       app_info = g_file_query_default_handler (file, NULL, &error);
-       if (!app_info) {
-               ev_window_error_message (window, error,
-                                        "%s",
-                                        _("Unable to launch external application."));
-               g_object_unref (file);
-               g_error_free (error);
-
-               return;
-       }
-
-       screen = gtk_window_get_screen (GTK_WINDOW (window));
-       context = gdk_display_get_app_launch_context (gdk_screen_get_display (screen));
-       gdk_app_launch_context_set_screen (context, screen);
-       gdk_app_launch_context_set_timestamp (context, gtk_get_current_event_time ());
-
-       file_list.data = file;
-       if (!g_app_info_launch (app_info, &file_list, G_APP_LAUNCH_CONTEXT (context), &error)) {
-               ev_window_error_message (window, error,
-                                        "%s",
-                                        _("Unable to launch external application."));
-               g_error_free (error);
-       }
-
-       g_object_unref (app_info);
-       g_object_unref (file);
-        /* FIXMEchpe: unref launch context? */
-
-       /* According to the PDF spec filename can be an executable. I'm not sure
-          allowing to launch executables is a good idea though. -- marco */
+       ev_window_warning_message (window,
+                                   _("Security alert: this document has been prevented from opening the file 
“%s”"),
+                                  ev_link_action_get_filename (action));
 }
 
 static void