2 * Copyright (C) 2010-2011 Robert Ancell.
3 * Author: Robert Ancell <robert.ancell@canonical.com>
5 * This program is free software: you can redistribute it and/or modify it under
6 * the terms of the GNU General Public License as published by the Free Software
7 * Foundation, either version 3 of the License, or (at your option) any later
8 * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
17 #include "configuration.h"
18 #include "guest-account.h"
20 #include "session-config.h"
29 static guint signals[LAST_SIGNAL] = { 0 };
33 /* Configuration for this seat */
34 GHashTable *properties;
36 /* TRUE if able to switch users */
39 /* TRUE if display server can be shared for sessions */
40 gboolean share_display_server;
42 /* The display servers on this seat */
43 GList *display_servers;
45 /* The sessions on this seat */
48 /* The session to set active when it starts */
49 Session *session_to_activate;
51 /* TRUE if stopping this seat (waiting for displays to stop) */
58 /* PAM services to use */
59 #define GREETER_SERVICE "lightdm-greeter"
60 #define USER_SERVICE "lightdm"
61 #define AUTOLOGIN_SERVICE "lightdm-autologin"
63 G_DEFINE_TYPE (Seat, seat, G_TYPE_OBJECT);
70 static GHashTable *seat_modules = NULL;
72 // FIXME: Make a get_display_server() that re-uses display servers if supported
73 static DisplayServer *create_display_server (Seat *seat);
74 static Greeter *create_greeter_session (Seat *seat);
75 static void start_session (Seat *seat, Session *session);
78 seat_register_module (const gchar *name, GType type)
83 seat_modules = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
85 g_debug ("Registered seat module %s", name);
87 module = g_malloc0 (sizeof (SeatModule));
88 module->name = g_strdup (name);
90 g_hash_table_insert (seat_modules, g_strdup (name), module);
94 seat_new (const gchar *module_name)
99 g_return_val_if_fail (module_name != NULL, NULL);
102 m = g_hash_table_lookup (seat_modules, module_name);
106 seat = g_object_new (m->type, NULL);
112 seat_set_property (Seat *seat, const gchar *name, const gchar *value)
114 g_return_if_fail (seat != NULL);
115 g_hash_table_insert (seat->priv->properties, g_strdup (name), g_strdup (value));
119 seat_get_string_property (Seat *seat, const gchar *name)
121 g_return_val_if_fail (seat != NULL, NULL);
122 return g_hash_table_lookup (seat->priv->properties, name);
126 seat_get_boolean_property (Seat *seat, const gchar *name)
128 return g_strcmp0 (seat_get_string_property (seat, name), "true") == 0;
132 seat_get_integer_property (Seat *seat, const gchar *name)
136 value = seat_get_string_property (seat, name);
137 return value ? atoi (value) : 0;
141 seat_set_can_switch (Seat *seat, gboolean can_switch)
143 g_return_if_fail (seat != NULL);
145 seat->priv->can_switch = can_switch;
149 seat_set_share_display_server (Seat *seat, gboolean share_display_server)
151 g_return_if_fail (seat != NULL);
153 seat->priv->share_display_server = share_display_server;
157 seat_start (Seat *seat)
159 g_return_val_if_fail (seat != NULL, FALSE);
161 SEAT_GET_CLASS (seat)->setup (seat);
162 return SEAT_GET_CLASS (seat)->start (seat);
166 seat_get_sessions (Seat *seat)
168 g_return_val_if_fail (seat != NULL, NULL);
169 return seat->priv->sessions;
173 seat_set_active_session (Seat *seat, Session *session)
177 g_return_if_fail (seat != NULL);
179 SEAT_GET_CLASS (seat)->set_active_session (seat, session);
181 /* Stop any greeters */
182 for (link = seat->priv->sessions; link; link = link->next)
184 Session *s = link->data;
186 if (s == session || session_get_is_stopping (s))
191 g_debug ("Stopping greeter");
198 seat_get_active_session (Seat *seat)
200 g_return_val_if_fail (seat != NULL, NULL);
201 return SEAT_GET_CLASS (seat)->get_active_session (seat);
205 seat_get_can_switch (Seat *seat)
207 g_return_val_if_fail (seat != NULL, FALSE);
208 return seat->priv->can_switch;
212 seat_get_allow_guest (Seat *seat)
214 g_return_val_if_fail (seat != NULL, FALSE);
215 return seat_get_boolean_property (seat, "allow-guest") && guest_account_is_installed ();
219 run_script (Seat *seat, DisplayServer *display_server, const gchar *script_name, User *user)
222 gboolean result = FALSE;
224 script = process_new ();
226 process_set_command (script, script_name);
228 /* Set POSIX variables */
229 process_set_clear_environment (script, TRUE);
230 process_set_env (script, "SHELL", "/bin/sh");
232 /* Variables required for regression tests */
233 if (g_getenv ("LIGHTDM_TEST_ROOT"))
235 process_set_env (script, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
236 process_set_env (script, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
237 process_set_env (script, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
238 process_set_env (script, "PATH", g_getenv ("PATH"));
241 process_set_env (script, "PATH", "/usr/local/bin:/usr/bin:/bin");
245 process_set_env (script, "USER", user_get_name (user));
246 process_set_env (script, "LOGNAME", user_get_name (user));
247 process_set_env (script, "HOME", user_get_home_directory (user));
250 process_set_env (script, "HOME", "/");
252 SEAT_GET_CLASS (seat)->run_script (seat, display_server, script);
254 if (process_start (script, TRUE))
258 exit_status = process_get_exit_status (script);
259 if (WIFEXITED (exit_status))
261 g_debug ("Exit status of %s: %d", script_name, WEXITSTATUS (exit_status));
262 result = WEXITSTATUS (exit_status) == EXIT_SUCCESS;
266 g_object_unref (script);
272 seat_real_run_script (Seat *seat, DisplayServer *display_server, Process *process)
277 emit_upstart_signal (const gchar *signal)
279 g_return_if_fail (signal != NULL);
280 g_return_if_fail (signal[0] != 0);
285 gchar *cmd = g_strdup_printf ("initctl -q emit %s DISPLAY_MANAGER=lightdm", signal);
286 g_spawn_command_line_async (cmd, NULL); /* OK if it fails, probably not installed */
291 check_stopped (Seat *seat)
293 if (seat->priv->stopping &&
294 !seat->priv->stopped &&
295 g_list_length (seat->priv->display_servers) == 0 &&
296 g_list_length (seat->priv->sessions) == 0)
298 seat->priv->stopped = TRUE;
299 g_debug ("Seat stopped");
300 g_signal_emit (seat, signals[STOPPED], 0);
305 display_server_stopped_cb (DisplayServer *display_server, Seat *seat)
308 Session *active_session;
310 g_debug ("Display server stopped");
312 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
313 seat->priv->display_servers = g_list_remove (seat->priv->display_servers, display_server);
315 if (seat->priv->stopping)
317 check_stopped (seat);
318 g_object_unref (display_server);
322 /* Stop all sessions on this display server */
323 list = g_list_copy (seat->priv->sessions);
324 for (link = list; link; link = link->next)
325 g_object_ref (link->data);
326 for (link = list; link; link = link->next)
328 Session *session = link->data;
330 if (session_get_display_server (session) != display_server || session_get_is_stopping (session))
333 /* Stop seat if this is the only display server and it failed to start a greeter */
334 if (IS_GREETER (session) &&
335 !session_get_is_started (session) &&
336 g_list_length (seat->priv->display_servers) == 0)
338 g_debug ("Stopping seat, greeter display server failed to start");
342 g_debug ("Stopping session");
343 session_stop (session);
345 g_list_free_full (list, g_object_unref);
347 if (!seat->priv->stopping && display_server_get_start_local_sessions (display_server))
349 /* If we were the active session, switch to a greeter */
350 active_session = seat_get_active_session (seat);
351 if (!active_session || session_get_display_server (active_session) == display_server)
353 g_debug ("Active display server stopped, starting greeter");
354 seat_switch_to_greeter (seat);
358 g_object_unref (display_server);
362 switch_to_greeter_from_failed_session (Seat *seat, Session *session)
364 Greeter *greeter_session;
366 greeter_session = create_greeter_session (seat);
367 if (session_get_is_guest (session))
368 greeter_set_hint (greeter_session, "select-guest", "true");
370 greeter_set_hint (greeter_session, "select-user", session_get_username (session));
371 if (seat->priv->session_to_activate)
372 g_object_unref (seat->priv->session_to_activate);
373 seat->priv->session_to_activate = g_object_ref (greeter_session);
375 if (seat->priv->share_display_server)
376 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
379 DisplayServer *display_server;
381 display_server = create_display_server (seat);
382 if (!display_server_start (display_server))
384 g_debug ("Failed to start display server for greeter");
388 session_set_display_server (session, display_server);
391 start_session (seat, SESSION (greeter_session));
393 /* Stop failed session */
394 session_stop (session);
398 start_session (Seat *seat, Session *session)
400 if (session_start (session))
403 if (IS_GREETER (session))
405 g_debug ("Failed to start greeter");
406 display_server_stop (session_get_display_server (session));
410 g_debug ("Failed to start session, starting greeter");
411 switch_to_greeter_from_failed_session (seat, session);
415 run_session (Seat *seat, Session *session)
419 if (IS_GREETER (session))
420 script = seat_get_string_property (seat, "greeter-setup-script");
422 script = seat_get_string_property (seat, "session-setup-script");
423 if (script && !run_script (seat, session_get_display_server (session), script, NULL))
425 g_debug ("Switching to greeter due to failed setup script");
426 switch_to_greeter_from_failed_session (seat, session);
430 if (!IS_GREETER (session))
431 g_signal_emit (seat, signals[RUNNING_USER_SESSION], 0, session);
433 session_run (session);
435 // FIXME: Wait until the session is ready
437 if (session == seat->priv->session_to_activate)
439 seat_set_active_session (seat, session);
440 g_object_unref (seat->priv->session_to_activate);
441 seat->priv->session_to_activate = NULL;
446 session_authentication_complete_cb (Session *session, Seat *seat)
448 if (session_get_is_authenticated (session))
450 g_debug ("Session authenticated, running command");
451 run_session (seat, session);
453 else if (!IS_GREETER (session))
455 g_debug ("Switching to greeter due to failed authentication");
456 switch_to_greeter_from_failed_session (seat, session);
460 g_debug ("Stopping session that failed authentication");
461 session_stop (session);
466 session_stopped_cb (Session *session, Seat *seat)
468 DisplayServer *display_server;
470 g_debug ("Session stopped");
472 display_server = session_get_display_server (session);
475 if (!IS_GREETER (session))
478 script = seat_get_string_property (seat, "session-cleanup-script");
480 run_script (seat, display_server, script, session_get_user (session));
483 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
484 seat->priv->sessions = g_list_remove (seat->priv->sessions, session);
486 /* We were waiting for this session, but it didn't start :( */
487 // FIXME: Start a greeter on this?
488 if (session == seat->priv->session_to_activate)
490 g_object_unref (seat->priv->session_to_activate);
491 seat->priv->session_to_activate = NULL;
494 if (seat->priv->stopping)
496 check_stopped (seat);
497 g_object_unref (session);
501 /* If this is the greeter session then re-use this display server */
502 if (IS_GREETER (session) && seat->priv->share_display_server &&
503 greeter_get_start_session (GREETER (session)))
507 for (link = seat->priv->sessions; link; link = link->next)
509 Session *s = link->data;
511 /* Skip this session and sessions on other display servers */
512 if (s == session || session_get_display_server (s) != display_server || session_get_is_stopping (s))
515 if (session_get_is_authenticated (s))
517 g_debug ("Greeter stopped, running session");
518 run_session (seat, s);
522 g_debug ("Greeter stopped, starting session authentication");
523 start_session (seat, s);
528 /* If this is the greeter and nothing else is running then stop the seat */
529 else if (IS_GREETER (session) &&
530 !greeter_get_start_session (GREETER (session)) &&
531 g_list_length (seat->priv->display_servers) == 1 &&
532 g_list_nth_data (seat->priv->display_servers, 0) == display_server)
534 g_debug ("Stopping seat, failed to start a greeter");
537 /* If we were the active session, switch to a greeter */
538 else if (!IS_GREETER (session) && session == seat_get_active_session (seat))
540 g_debug ("Active session stopped, starting greeter");
541 seat_switch_to_greeter (seat);
544 /* Stop the display server if no-longer required */
545 if (display_server && !display_server_get_is_stopping (display_server))
550 for (link = seat->priv->sessions; link; link = link->next)
552 Session *s = link->data;
555 if (session_get_display_server (s) == display_server)
560 g_debug ("Stopping display server, no sessions require it");
561 display_server_stop (display_server);
565 g_signal_emit (seat, signals[SESSION_REMOVED], 0, session);
566 g_object_unref (session);
570 set_session_env (Session *session)
572 /* Connect using the session bus */
575 if (g_getenv ("DBUS_SESSION_BUS_ADDRESS"))
576 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
577 session_set_env (session, "LDM_BUS", "SESSION");
578 if (g_getenv ("LD_PRELOAD"))
579 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
580 if (g_getenv ("LD_LIBRARY_PATH"))
581 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
582 if (g_getenv ("PATH"))
583 session_set_env (session, "PATH", g_getenv ("PATH"));
586 /* Variables required for regression tests */
587 if (g_getenv ("LIGHTDM_TEST_ROOT"))
589 session_set_env (session, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
590 session_set_env (session, "DBUS_SYSTEM_BUS_ADDRESS", g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
591 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
592 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
593 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
594 session_set_env (session, "GI_TYPELIB_PATH", g_getenv ("GI_TYPELIB_PATH"));
599 create_session (Seat *seat, gboolean autostart)
603 session = SEAT_GET_CLASS (seat)->create_session (seat);
604 seat->priv->sessions = g_list_append (seat->priv->sessions, session);
606 g_signal_connect (session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
607 g_signal_connect (session, "stopped", G_CALLBACK (session_stopped_cb), seat);
609 set_session_env (session);
611 g_signal_emit (seat, signals[SESSION_ADDED], 0, session);
617 get_session_argv (SessionConfig *session_config, const gchar *session_wrapper)
622 GError *error = NULL;
624 /* If configured, run sessions through a wrapper */
627 argv = g_malloc (sizeof (gchar *) * 3);
628 path = g_find_program_in_path (session_wrapper);
629 argv[0] = path ? path : g_strdup (session_wrapper);
630 argv[1] = g_strdup (session_config_get_command (session_config));
635 /* Split command into an array listing and make command absolute */
636 result = g_shell_parse_argv (session_config_get_command (session_config), &argc, &argv, &error);
638 g_debug ("Invalid session command '%s': %s", session_config_get_command (session_config), error->message);
639 g_clear_error (&error);
642 path = g_find_program_in_path (argv[0]);
652 static SessionConfig *
653 find_session_config (const gchar *sessions_dir, const gchar *session_name)
656 SessionConfig *session_config = NULL;
658 GError *error = NULL;
660 g_return_val_if_fail (sessions_dir != NULL, NULL);
661 g_return_val_if_fail (session_name != NULL, NULL);
663 dirs = g_strsplit (sessions_dir, ":", -1);
664 for (i = 0; dirs[i]; i++)
666 gchar *filename, *path;
668 filename = g_strdup_printf ("%s.desktop", session_name);
669 path = g_build_filename (dirs[i], filename, NULL);
671 session_config = session_config_new_from_file (path, &error);
676 if (dirs[i+1] == NULL)
677 g_debug ("Failed to find session configuration %s", session_name);
678 g_clear_error (&error);
682 return session_config;
686 create_user_session (Seat *seat, const gchar *username)
690 const gchar *session_name, *language;
691 SessionConfig *session_config;
692 Session *session = NULL;
694 /* Load user preferences */
695 user = accounts_get_user_by_name (username);
698 g_debug ("Can't login unknown user '%s'", username);
701 session_name = user_get_xsession (user);
702 language = user_get_language (user);
705 session_name = seat_get_string_property (seat, "user-session");
706 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
707 session_config = find_session_config (sessions_dir, session_name);
708 g_free (sessions_dir);
713 session = create_session (seat, TRUE);
714 session_set_env (session, "DESKTOP_SESSION", session_name);
715 session_set_env (session, "GDMSESSION", session_name);
716 if (language && language[0] != '\0')
718 session_set_env (session, "LANG", language);
719 session_set_env (session, "GDM_LANG", language);
721 session_set_pam_service (session, AUTOLOGIN_SERVICE);
722 session_set_username (session, username);
723 session_set_do_authenticate (session, TRUE);
724 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
725 session_set_argv (session, argv);
728 g_object_unref (session_config);
731 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
734 g_object_unref (user);
740 create_guest_session (Seat *seat)
742 gchar *sessions_dir, **argv;
743 SessionConfig *session_config;
746 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
747 session_config = find_session_config (sessions_dir, seat_get_string_property (seat, "user-session"));
748 g_free (sessions_dir);
751 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
755 session = create_session (seat, TRUE);
756 session_set_do_authenticate (session, TRUE);
757 session_set_is_guest (session, TRUE);
758 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
759 g_object_unref (session_config);
760 session_set_argv (session, argv);
767 greeter_create_session_cb (Greeter *greeter, Seat *seat)
771 session = create_session (seat, FALSE);
772 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
774 return g_object_ref (session);
778 prepend_argv (gchar ***argv, const gchar *value)
780 gchar **old_argv, **new_argv;
784 new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
785 new_argv[0] = g_strdup (value);
786 for (i = 0; old_argv[i]; i++)
787 new_argv[i + 1] = old_argv[i];
788 new_argv[i + 1] = NULL;
795 find_user_session (Seat *seat, const gchar *username)
802 for (link = seat->priv->sessions; link; link = link->next)
804 Session *session = link->data;
806 if (!session_get_is_stopping (session) && strcmp (session_get_username (session), username) == 0)
814 greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Seat *seat)
816 Session *session, *existing_session;
817 const gchar *username, *language = NULL;
818 SessionConfig *session_config;
820 gchar *sessions_dir = NULL;
823 /* Get the session to use */
824 if (greeter_get_guest_authenticated (greeter))
826 session = create_guest_session (seat);
829 session_set_pam_service (session, AUTOLOGIN_SERVICE);
832 session = greeter_get_authentication_session (greeter);
834 /* Switch to this session when it is ready */
835 if (seat->priv->session_to_activate)
836 g_object_unref (seat->priv->session_to_activate);
837 seat->priv->session_to_activate = g_object_ref (session);
839 /* Return to existing session if it is open */
840 username = session_get_username (session);
841 existing_session = find_user_session (seat, username);
842 if (existing_session && session != existing_session)
844 g_debug ("Returning to existing user session %s", username);
845 session_stop (session);
846 seat_set_active_session (seat, existing_session);
850 /* Get session command to run */
853 case SESSION_TYPE_LOCAL:
854 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
856 case SESSION_TYPE_REMOTE:
857 sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
861 /* Load user preferences */
862 user = session_get_user (session);
866 session_name = user_get_xsession (user);
867 language = user_get_language (user);
871 session_name = seat_get_string_property (seat, "user-session");
873 user_set_xsession (session_get_user (session), session_name);
875 session_config = find_session_config (sessions_dir, session_name);
876 g_free (sessions_dir);
879 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
883 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
884 g_object_unref (session_config);
885 session_set_argv (session, argv);
887 session_set_env (session, "DESKTOP_SESSION", session_name);
888 session_set_env (session, "GDMSESSION", session_name);
889 if (language && language[0] != '\0')
891 session_set_env (session, "LANG", language);
892 session_set_env (session, "GDM_LANG", language);
895 /* If can re-use the display server, stop the greeter first */
896 if (seat->priv->share_display_server)
898 /* Run on the same display server after the greeter has stopped */
899 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
901 g_debug ("Stopping greeter");
902 session_stop (SESSION (greeter));
906 /* Otherwise start a new display server for this session */
909 DisplayServer *display_server;
911 display_server = create_display_server (seat);
912 if (!display_server_start (display_server))
915 session_set_display_server (session, display_server);
922 create_greeter_session (Seat *seat)
924 gchar *sessions_dir, **argv;
925 SessionConfig *session_config;
926 Greeter *greeter_session;
928 const gchar *greeter_wrapper;
930 sessions_dir = config_get_string (config_get_instance (), "LightDM", "greeters-directory");
931 session_config = find_session_config (sessions_dir, seat_get_string_property (seat, "greeter-session"));
932 g_free (sessions_dir);
936 argv = get_session_argv (session_config, NULL);
937 greeter_wrapper = seat_get_string_property (seat, "greeter-wrapper");
941 path = g_find_program_in_path (greeter_wrapper);
942 prepend_argv (&argv, path ? path : greeter_wrapper);
946 greeter_session = SEAT_GET_CLASS (seat)->create_greeter_session (seat);
947 seat->priv->sessions = g_list_append (seat->priv->sessions, SESSION (greeter_session));
948 g_signal_connect (greeter_session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
949 g_signal_connect (greeter_session, "stopped", G_CALLBACK (session_stopped_cb), seat);
951 set_session_env (SESSION (greeter_session));
953 session_set_pam_service (SESSION (greeter_session), GREETER_SERVICE);
954 greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
955 session_set_username (SESSION (greeter_session), greeter_user);
956 g_free (greeter_user);
957 session_set_argv (SESSION (greeter_session), argv);
960 greeter_set_pam_services (greeter_session, USER_SERVICE, AUTOLOGIN_SERVICE);
961 g_signal_connect (greeter_session, "create-session", G_CALLBACK (greeter_create_session_cb), seat);
962 g_signal_connect (greeter_session, "start-session", G_CALLBACK (greeter_start_session_cb), seat);
964 /* Set hints to greeter */
965 greeter_set_hint (greeter_session, "default-session", seat_get_string_property (seat, "user-session"));
966 greeter_set_allow_guest (greeter_session, seat_get_allow_guest (seat));
967 greeter_set_hint (greeter_session, "hide-users", seat_get_boolean_property (seat, "greeter-hide-users") ? "true" : "false");
968 greeter_set_hint (greeter_session, "show-manual-login", seat_get_boolean_property (seat, "greeter-show-manual-login") ? "true" : "false");
969 greeter_set_hint (greeter_session, "show-remote-login", seat_get_boolean_property (seat, "greeter-show-remote-login") ? "true" : "false");
970 greeter_set_hint (greeter_session, "has-guest-account", seat_get_allow_guest (seat) && seat_get_boolean_property (seat, "greeter-allow-guest") ? "true" : "false");
972 g_object_unref (session_config);
974 return greeter_session;
978 find_session_for_display_server (Seat *seat, DisplayServer *display_server)
982 for (link = seat->priv->sessions; link; link = link->next)
984 Session *session = link->data;
985 if (session_get_display_server (session) == display_server && !session_get_is_stopping (session))
993 display_server_ready_cb (DisplayServer *display_server, Seat *seat)
998 /* Run setup script */
999 script = seat_get_string_property (seat, "display-setup-script");
1000 if (script && !run_script (seat, display_server, script, NULL))
1002 g_debug ("Stopping display server due to failed setup script");
1003 display_server_stop (display_server);
1007 /* Stop if don't need to run a session */
1008 if (!display_server_get_start_local_sessions (display_server))
1011 emit_upstart_signal ("login-session-start");
1013 /* Start the session waiting for this display server */
1014 session = find_session_for_display_server (seat, display_server);
1017 if (session_get_is_authenticated (session))
1019 g_debug ("Display server ready, running session");
1020 run_session (seat, session);
1024 g_debug ("Display server ready, starting session authentication");
1025 start_session (seat, session);
1030 g_debug ("Stopping not required display server");
1031 display_server_stop (display_server);
1035 static DisplayServer *
1036 create_display_server (Seat *seat)
1038 DisplayServer *display_server;
1040 display_server = SEAT_GET_CLASS (seat)->create_display_server (seat);
1041 seat->priv->display_servers = g_list_append (seat->priv->display_servers, display_server);
1042 g_signal_connect (display_server, "ready", G_CALLBACK (display_server_ready_cb), seat);
1043 g_signal_connect (display_server, "stopped", G_CALLBACK (display_server_stopped_cb), seat);
1045 return display_server;
1049 find_greeter_session (Seat *seat)
1053 for (link = seat->priv->sessions; link; link = link->next)
1055 Session *session = link->data;
1056 if (!session_get_is_stopping (session) && IS_GREETER (session))
1057 return GREETER (session);
1064 seat_switch_to_greeter (Seat *seat)
1066 Greeter *greeter_session;
1067 DisplayServer *display_server;
1069 g_return_val_if_fail (seat != NULL, FALSE);
1071 if (!seat->priv->can_switch)
1074 /* Switch to greeter if one open (shouldn't be though) */
1075 greeter_session = find_greeter_session (seat);
1076 if (greeter_session)
1078 g_debug ("Switching to existing greeter");
1079 seat_set_active_session (seat, SESSION (greeter_session));
1083 greeter_session = create_greeter_session (seat);
1084 if (seat->priv->session_to_activate)
1085 g_object_unref (seat->priv->session_to_activate);
1086 seat->priv->session_to_activate = g_object_ref (greeter_session);
1088 display_server = create_display_server (seat);
1089 session_set_display_server (SESSION (greeter_session), display_server);
1090 if (!display_server_start (display_server))
1097 seat_switch_to_user (Seat *seat, const gchar *username, const gchar *session_name)
1100 DisplayServer *display_server;
1102 g_return_val_if_fail (seat != NULL, FALSE);
1103 g_return_val_if_fail (username != NULL, FALSE);
1105 if (!seat->priv->can_switch)
1108 g_debug ("Switching to user %s", username);
1110 session = find_user_session (seat, username);
1113 g_debug ("Switching to existing user session %s", username);
1114 seat_set_active_session (seat, session);
1118 session = create_user_session (seat, username);
1121 if (seat->priv->session_to_activate)
1122 g_object_unref (seat->priv->session_to_activate);
1123 seat->priv->session_to_activate = g_object_ref (session);
1124 session_set_pam_service (session, USER_SERVICE);
1126 display_server = create_display_server (seat);
1127 session_set_display_server (session, display_server);
1128 if (!display_server_start (display_server))
1135 find_guest_session (Seat *seat)
1139 for (link = seat->priv->sessions; link; link = link->next)
1141 Session *session = link->data;
1142 if (!session_get_is_stopping (session) && session_get_is_guest (session))
1150 seat_switch_to_guest (Seat *seat, const gchar *session_name)
1153 DisplayServer *display_server;
1155 g_return_val_if_fail (seat != NULL, FALSE);
1157 if (!seat->priv->can_switch || !seat_get_allow_guest (seat))
1160 /* Switch to session if one open */
1161 session = find_guest_session (seat);
1164 g_debug ("Switching to existing guest account %s", session_get_username (session));
1165 seat_set_active_session (seat, session);
1169 display_server = create_display_server (seat);
1170 if (!display_server_start (display_server))
1173 session = create_guest_session (seat);
1176 if (seat->priv->session_to_activate)
1177 g_object_unref (seat->priv->session_to_activate);
1178 seat->priv->session_to_activate = g_object_ref (session);
1179 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1180 session_set_display_server (session, display_server);
1186 seat_lock (Seat *seat, const gchar *username)
1188 Greeter *greeter_session;
1189 DisplayServer *display_server;
1191 g_return_val_if_fail (seat != NULL, FALSE);
1193 if (!seat->priv->can_switch)
1196 g_debug ("Locking seat");
1198 /* Switch to greeter if one open (shouldn't be though) */
1199 greeter_session = find_greeter_session (seat);
1200 if (greeter_session)
1202 g_debug ("Switching to existing greeter");
1203 seat_set_active_session (seat, SESSION (greeter_session));
1207 display_server = create_display_server (seat);
1208 if (!display_server_start (display_server))
1211 greeter_session = create_greeter_session (seat);
1212 if (seat->priv->session_to_activate)
1213 g_object_unref (seat->priv->session_to_activate);
1214 seat->priv->session_to_activate = g_object_ref (greeter_session);
1215 greeter_set_hint (greeter_session, "lock-screen", "true");
1217 greeter_set_hint (greeter_session, "select-user", username);
1218 session_set_display_server (SESSION (greeter_session), display_server);
1224 seat_stop (Seat *seat)
1226 g_return_if_fail (seat != NULL);
1228 if (seat->priv->stopping)
1231 g_debug ("Stopping seat");
1232 seat->priv->stopping = TRUE;
1233 SEAT_GET_CLASS (seat)->stop (seat);
1237 seat_get_is_stopping (Seat *seat)
1239 g_return_val_if_fail (seat != NULL, FALSE);
1240 return seat->priv->stopping;
1244 seat_real_setup (Seat *seat)
1249 seat_real_start (Seat *seat)
1251 const gchar *autologin_username;
1252 int autologin_timeout;
1253 gboolean autologin_guest;
1254 gboolean autologin_in_background;
1255 Session *session = NULL;
1256 DisplayServer *display_server;
1258 g_debug ("Starting seat");
1260 display_server = create_display_server (seat);
1262 /* If this display server doesn't have a session running on it, just start it */
1263 if (!display_server_get_start_local_sessions (display_server))
1264 return display_server_start (display_server);
1266 /* Get autologin settings */
1267 autologin_username = seat_get_string_property (seat, "autologin-user");
1268 if (g_strcmp0 (autologin_username, "") == 0)
1269 autologin_username = NULL;
1270 autologin_timeout = seat_get_integer_property (seat, "autologin-user-timeout");
1271 autologin_guest = seat_get_boolean_property (seat, "autologin-guest");
1272 autologin_in_background = seat_get_boolean_property (seat, "autologin-in-background");
1274 /* Autologin if configured */
1275 if (autologin_timeout == 0 || autologin_in_background)
1277 if (autologin_guest)
1278 session = create_guest_session (seat);
1279 else if (autologin_username != NULL)
1280 session = create_user_session (seat, autologin_username);
1284 if (seat->priv->session_to_activate)
1285 g_object_unref (seat->priv->session_to_activate);
1286 seat->priv->session_to_activate = g_object_ref (session);
1287 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1290 /* Load in background if required */
1291 if (autologin_in_background && session)
1293 DisplayServer *background_display_server;
1295 background_display_server = create_display_server (seat);
1296 session_set_display_server (session, background_display_server);
1297 if (!display_server_start (background_display_server))
1300 /* Start a greeter as well */
1305 /* Fallback to a greeter */
1308 Greeter *greeter_session;
1310 greeter_session = create_greeter_session (seat);
1311 if (seat->priv->session_to_activate)
1312 g_object_unref (seat->priv->session_to_activate);
1313 seat->priv->session_to_activate = g_object_ref (greeter_session);
1314 session = SESSION (greeter_session);
1316 if (autologin_timeout)
1320 value = g_strdup_printf ("%d", autologin_timeout);
1321 greeter_set_hint (greeter_session, "autologin-timeout", value);
1323 if (autologin_username)
1324 greeter_set_hint (greeter_session, "autologin-user", autologin_username);
1325 if (autologin_guest)
1326 greeter_set_hint (greeter_session, "autologin-guest", "true");
1330 /* Fail if can't start a session */
1337 /* Start display server to show session on */
1338 session_set_display_server (session, display_server);
1339 if (!display_server_start (display_server))
1346 seat_real_set_active_session (Seat *seat, Session *session)
1351 seat_real_get_active_session (Seat *seat)
1357 seat_real_stop (Seat *seat)
1361 check_stopped (seat);
1362 if (seat->priv->stopped)
1365 /* Stop all the display servers and sessions on the seat. Copy the list as
1366 * it might be modified if a display server / session stops during this loop */
1367 list = g_list_copy (seat->priv->display_servers);
1368 for (link = list; link; link = link->next)
1369 g_object_ref (link->data);
1370 for (link = list; link; link = link->next)
1372 DisplayServer *display_server = link->data;
1373 if (!display_server_get_is_stopping (display_server))
1375 g_debug ("Stopping display server");
1376 display_server_stop (display_server);
1379 g_list_free_full (list, g_object_unref);
1380 list = g_list_copy (seat->priv->sessions);
1381 for (link = list; link; link = link->next)
1382 g_object_ref (link->data);
1383 for (link = list; link; link = link->next)
1385 Session *session = link->data;
1386 if (!session_get_is_stopping (session))
1388 g_debug ("Stopping session");
1389 session_stop (session);
1392 g_list_free_full (list, g_object_unref);
1396 seat_init (Seat *seat)
1398 seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_TYPE, SeatPrivate);
1399 seat->priv->properties = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1400 seat->priv->share_display_server = TRUE;
1404 seat_finalize (GObject *object)
1409 self = SEAT (object);
1411 g_hash_table_unref (self->priv->properties);
1412 for (link = self->priv->display_servers; link; link = link->next)
1414 DisplayServer *display_server = link->data;
1415 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1417 g_list_free_full (self->priv->display_servers, g_object_unref);
1418 for (link = self->priv->sessions; link; link = link->next)
1420 Session *session = link->data;
1421 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1423 g_list_free_full (self->priv->sessions, g_object_unref);
1424 if (self->priv->session_to_activate)
1425 g_object_unref (self->priv->session_to_activate);
1427 G_OBJECT_CLASS (seat_parent_class)->finalize (object);
1431 seat_class_init (SeatClass *klass)
1433 GObjectClass *object_class = G_OBJECT_CLASS (klass);
1435 klass->setup = seat_real_setup;
1436 klass->start = seat_real_start;
1437 klass->set_active_session = seat_real_set_active_session;
1438 klass->get_active_session = seat_real_get_active_session;
1439 klass->run_script = seat_real_run_script;
1440 klass->stop = seat_real_stop;
1442 object_class->finalize = seat_finalize;
1444 g_type_class_add_private (klass, sizeof (SeatPrivate));
1446 signals[SESSION_ADDED] =
1447 g_signal_new ("session-added",
1448 G_TYPE_FROM_CLASS (klass),
1450 G_STRUCT_OFFSET (SeatClass, session_added),
1453 G_TYPE_NONE, 1, SESSION_TYPE);
1454 signals[RUNNING_USER_SESSION] =
1455 g_signal_new ("running-user-session",
1456 G_TYPE_FROM_CLASS (klass),
1458 G_STRUCT_OFFSET (SeatClass, running_user_session),
1461 G_TYPE_NONE, 1, SESSION_TYPE);
1462 signals[SESSION_REMOVED] =
1463 g_signal_new ("session-removed",
1464 G_TYPE_FROM_CLASS (klass),
1466 G_STRUCT_OFFSET (SeatClass, session_removed),
1469 G_TYPE_NONE, 1, SESSION_TYPE);
1471 g_signal_new ("stopped",
1472 G_TYPE_FROM_CLASS (klass),
1474 G_STRUCT_OFFSET (SeatClass, stopped),