[gdm] worker: fix crasher for PAM_RADIO_TYPE messages

[Ray Strode <halfline src gnome org>]

commit f29d171dcbb73af4ad0a476e4a626c6df6e04c21
Author: David Liang <liangchenye gmail com>
Date:   Tue Sep 10 12:27:48 2013 -0400

    worker: fix crasher for PAM_RADIO_TYPE messages
    
    Some modules send PAM_RADIO_TYPE message to gdm (samba: commit
    2d063d077aed01f020352e859b766415fe094fa5 nsswitch/pam_winbind.c),
    then gdm crashes.
    
    This commit reuses the 'ask_question' method and add 'yes/no/maybe'
    to the prompt_label, which avoids the crash.  It's suboptimal because
    the user needs to type 'yes' manually rather than clicking on a UI element,
    and because yes, no, and maybe aren't translated.
    
    It's a temporary workaround until more complete support can get added.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=671106

 daemon/gdm-session-worker.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gdm-session-worker.c b/daemon/gdm-session-worker.c
index 7307872..437f1cd 100644
--- a/daemon/gdm-session-worker.c
+++ b/daemon/gdm-session-worker.c
@@ -748,6 +748,7 @@ gdm_session_worker_process_pam_message (GdmSessionWorker          *worker,
         char    *user_answer;
         gboolean res;
         char    *utf8_msg;
+        char   *msg;
 
         if (response_text != NULL) {
                 *response_text = NULL;
@@ -778,6 +779,13 @@ gdm_session_worker_process_pam_message (GdmSessionWorker          *worker,
         case PAM_ERROR_MSG:
                 res = gdm_session_worker_report_problem (worker, utf8_msg);
                 break;
+#ifdef PAM_RADIO_TYPE
+       case PAM_RADIO_TYPE:
+               msg = g_strdup_printf ("%s (yes/no/maybe)", utf8_msg);
+                res = gdm_session_worker_ask_question (worker, msg, &user_answer);
+               g_free (msg);
+               break;
+#endif
         default:
                 g_assert_not_reached ();
                 break;