From c00daca1579c47f3f62894ff2378c37e6cbebfd3 Mon Sep 17 00:00:00 2001

From: Ray Strode <rstrode@redhat.com>

Date: Tue, 20 Jul 2021 13:36:45 -0400

Subject: [PATCH 2/4] libgdm: Sort session list

Right now the session list comes out in hash table order.

This commit changes the code to sort by description.

---

 libgdm/gdm-sessions.c | 19 +++++++++++++++++++

 1 file changed, 19 insertions(+)

diff --git a/libgdm/gdm-sessions.c b/libgdm/gdm-sessions.c

index 97ed5ef3..f078e04b 100644

--- a/libgdm/gdm-sessions.c

+++ b/libgdm/gdm-sessions.c

@@ -311,92 +311,111 @@ collect_sessions (void)

                 g_ptr_array_add (wayland_search_array, g_strdup (wayland_search_dirs[i]));

         }

 #endif

         if (gdm_available_sessions_map == NULL) {

                 gdm_available_sessions_map = g_hash_table_new_full (g_str_hash, g_str_equal,

                                                                     g_free, (GDestroyNotify)gdm_session_file_free);

         }

         if (!supported_session_types || g_strv_contains ((const char * const *) supported_session_types, "x11")) {

                 for (i = 0; i < xorg_search_array->len; i++) {

                         collect_sessions_from_directory (g_ptr_array_index (xorg_search_array, i));

                 }

         }

 #ifdef ENABLE_WAYLAND_SUPPORT

 #ifdef ENABLE_USER_DISPLAY_SERVER

         if (!supported_session_types  || g_strv_contains ((const char * const *) supported_session_types, "wayland")) {

                 for (i = 0; i < wayland_search_array->len; i++) {

                         collect_sessions_from_directory (g_ptr_array_index (wayland_search_array, i));

                 }

         }

 #endif

 #endif

         g_hash_table_foreach_remove (gdm_available_sessions_map,

                                      remove_duplicate_sessions,

                                      names_seen_before);

 }

+static gint

+compare_session_ids (gconstpointer  a,

+                     gconstpointer  b)

+{

+        GdmSessionFile *session_a, *session_b;

+        session_a = (GdmSessionFile *) g_hash_table_lookup (gdm_available_sessions_map, a);

+        session_b = (GdmSessionFile *) g_hash_table_lookup (gdm_available_sessions_map, b);

+

+        if (session_a == NULL)

+                return -1;

+

+        if (session_b == NULL)

+                return 1;

+

+        return g_strcmp0 (session_a->translated_name, session_b->translated_name);

+}

+

 /**

  * gdm_get_session_ids:

  *

  * Reads /usr/share/xsessions and other relevant places for possible sessions

  * to log into and returns the complete list.

  *

  * Returns: (transfer full): a %NULL terminated list of session ids

  */

 char **

 gdm_get_session_ids (void)

 {

         GHashTableIter iter;

         gpointer key, value;

         GPtrArray *array;

         if (!gdm_sessions_map_is_initialized) {

                 collect_sessions ();

                 gdm_sessions_map_is_initialized = TRUE;

         }

         array = g_ptr_array_new ();

         g_hash_table_iter_init (&iter, gdm_available_sessions_map);

         while (g_hash_table_iter_next (&iter, &key, &value)) {

                 GdmSessionFile *session;

                 session = (GdmSessionFile *) value;

                 g_ptr_array_add (array, g_strdup (session->id));

         }

         g_ptr_array_add (array, NULL);

+        g_ptr_array_sort (array, compare_session_ids);

+

         return (char **) g_ptr_array_free (array, FALSE);

 }

 /**

  * gdm_get_session_name_and_description:

  * @id: an id from gdm_get_session_ids()

  * @description: (out): optional returned session description

  *

  * Takes an xsession id and returns the name and comment about it.

  *

  * Returns: The session name if found, or %NULL otherwise

  */

 char *

 gdm_get_session_name_and_description (const char  *id,

                                       char       **description)

 {

         GdmSessionFile *session;

         char *name;

         if (!gdm_sessions_map_is_initialized) {

                 collect_sessions ();

                 gdm_sessions_map_is_initialized = TRUE;

         }

         session = (GdmSessionFile *) g_hash_table_lookup (gdm_available_sessions_map,

                                                           id);

         if (session == NULL) {

                 return NULL;

-- 

2.34.1