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 get_start_local_sessions (Seat *seat)
307 return SEAT_GET_CLASS (seat)->get_start_local_sessions (seat);
311 display_server_stopped_cb (DisplayServer *display_server, Seat *seat)
314 Session *active_session;
316 g_debug ("Display server stopped");
318 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
319 seat->priv->display_servers = g_list_remove (seat->priv->display_servers, display_server);
321 if (seat->priv->stopping)
323 check_stopped (seat);
324 g_object_unref (display_server);
328 /* Stop all sessions on this display server */
329 list = g_list_copy (seat->priv->sessions);
330 for (link = list; link; link = link->next)
331 g_object_ref (link->data);
332 for (link = list; link; link = link->next)
334 Session *session = link->data;
336 if (session_get_display_server (session) != display_server || session_get_is_stopping (session))
339 /* Stop seat if this is the only display server and it failed to start a greeter */
340 if (IS_GREETER (session) &&
341 !session_get_is_started (session) &&
342 g_list_length (seat->priv->display_servers) == 0)
344 g_debug ("Stopping seat, greeter display server failed to start");
348 g_debug ("Stopping session");
349 session_stop (session);
351 g_list_free_full (list, g_object_unref);
353 if (!seat->priv->stopping && get_start_local_sessions (seat))
355 /* If we were the active session, switch to a greeter */
356 active_session = seat_get_active_session (seat);
357 if (!active_session || session_get_display_server (active_session) == display_server)
359 g_debug ("Active display server stopped, starting greeter");
360 seat_switch_to_greeter (seat);
364 g_object_unref (display_server);
368 switch_to_greeter_from_failed_session (Seat *seat, Session *session)
370 Greeter *greeter_session;
372 greeter_session = create_greeter_session (seat);
373 if (session_get_is_guest (session))
374 greeter_set_hint (greeter_session, "select-guest", "true");
376 greeter_set_hint (greeter_session, "select-user", session_get_username (session));
377 if (seat->priv->session_to_activate)
378 g_object_unref (seat->priv->session_to_activate);
379 seat->priv->session_to_activate = g_object_ref (greeter_session);
381 if (seat->priv->share_display_server)
382 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
385 DisplayServer *display_server;
387 display_server = create_display_server (seat);
388 if (!display_server_start (display_server))
390 g_debug ("Failed to start display server for greeter");
394 session_set_display_server (session, display_server);
397 start_session (seat, SESSION (greeter_session));
399 /* Stop failed session */
400 session_stop (session);
404 start_session (Seat *seat, Session *session)
406 /* Use system location for greeter log file */
407 if (IS_GREETER (session))
409 gchar *log_dir, *filename, *log_filename;
411 log_dir = config_get_string (config_get_instance (), "LightDM", "log-directory");
412 filename = g_strdup_printf ("%s-greeter.log", display_server_get_name (session_get_display_server (session)));
413 log_filename = g_build_filename (log_dir, filename, NULL);
416 session_set_log_file (session, log_filename);
417 g_free (log_filename);
420 if (session_start (session))
423 if (IS_GREETER (session))
425 g_debug ("Failed to start greeter");
426 display_server_stop (session_get_display_server (session));
430 g_debug ("Failed to start session, starting greeter");
431 switch_to_greeter_from_failed_session (seat, session);
435 run_session (Seat *seat, Session *session)
439 if (IS_GREETER (session))
440 script = seat_get_string_property (seat, "greeter-setup-script");
442 script = seat_get_string_property (seat, "session-setup-script");
443 if (script && !run_script (seat, session_get_display_server (session), script, NULL))
445 g_debug ("Switching to greeter due to failed setup script");
446 switch_to_greeter_from_failed_session (seat, session);
450 if (!IS_GREETER (session))
451 g_signal_emit (seat, signals[RUNNING_USER_SESSION], 0, session);
453 session_run (session);
455 // FIXME: Wait until the session is ready
457 if (session == seat->priv->session_to_activate)
459 seat_set_active_session (seat, session);
460 g_object_unref (seat->priv->session_to_activate);
461 seat->priv->session_to_activate = NULL;
466 session_authentication_complete_cb (Session *session, Seat *seat)
468 if (session_get_is_authenticated (session))
470 g_debug ("Session authenticated, running command");
471 run_session (seat, session);
473 else if (!IS_GREETER (session))
475 g_debug ("Switching to greeter due to failed authentication");
476 switch_to_greeter_from_failed_session (seat, session);
480 g_debug ("Stopping session that failed authentication");
481 session_stop (session);
486 session_stopped_cb (Session *session, Seat *seat)
488 DisplayServer *display_server;
490 g_debug ("Session stopped");
492 display_server = session_get_display_server (session);
495 if (!IS_GREETER (session))
498 script = seat_get_string_property (seat, "session-cleanup-script");
500 run_script (seat, display_server, script, session_get_user (session));
503 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
504 seat->priv->sessions = g_list_remove (seat->priv->sessions, session);
506 /* We were waiting for this session, but it didn't start :( */
507 // FIXME: Start a greeter on this?
508 if (session == seat->priv->session_to_activate)
510 g_object_unref (seat->priv->session_to_activate);
511 seat->priv->session_to_activate = NULL;
514 if (seat->priv->stopping)
516 check_stopped (seat);
517 g_object_unref (session);
521 /* If this is the greeter session then re-use this display server */
522 if (IS_GREETER (session) && seat->priv->share_display_server &&
523 greeter_get_start_session (GREETER (session)))
527 for (link = seat->priv->sessions; link; link = link->next)
529 Session *s = link->data;
531 /* Skip this session and sessions on other display servers */
532 if (s == session || session_get_display_server (s) != display_server || session_get_is_stopping (s))
535 if (session_get_is_authenticated (s))
537 g_debug ("Greeter stopped, running session");
538 run_session (seat, s);
542 g_debug ("Greeter stopped, starting session authentication");
543 start_session (seat, s);
548 /* If this is the greeter and nothing else is running then stop the seat */
549 else if (IS_GREETER (session) &&
550 !greeter_get_start_session (GREETER (session)) &&
551 g_list_length (seat->priv->display_servers) == 1 &&
552 g_list_nth_data (seat->priv->display_servers, 0) == display_server)
554 g_debug ("Stopping seat, failed to start a greeter");
557 /* If we were the active session, switch to a greeter */
558 else if (!IS_GREETER (session) && session == seat_get_active_session (seat))
560 g_debug ("Active session stopped, starting greeter");
561 seat_switch_to_greeter (seat);
564 /* Stop the display server if no-longer required */
565 if (display_server && !display_server_get_is_stopping (display_server))
570 for (link = seat->priv->sessions; link; link = link->next)
572 Session *s = link->data;
575 if (session_get_display_server (s) == display_server)
580 g_debug ("Stopping display server, no sessions require it");
581 display_server_stop (display_server);
585 g_signal_emit (seat, signals[SESSION_REMOVED], 0, session);
586 g_object_unref (session);
590 set_session_env (Session *session)
592 /* Connect using the session bus */
595 if (g_getenv ("DBUS_SESSION_BUS_ADDRESS"))
596 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
597 session_set_env (session, "LDM_BUS", "SESSION");
598 if (g_getenv ("LD_PRELOAD"))
599 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
600 if (g_getenv ("LD_LIBRARY_PATH"))
601 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
602 if (g_getenv ("PATH"))
603 session_set_env (session, "PATH", g_getenv ("PATH"));
606 /* Variables required for regression tests */
607 if (g_getenv ("LIGHTDM_TEST_ROOT"))
609 session_set_env (session, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
610 session_set_env (session, "DBUS_SYSTEM_BUS_ADDRESS", g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
611 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
612 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
613 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
614 session_set_env (session, "GI_TYPELIB_PATH", g_getenv ("GI_TYPELIB_PATH"));
619 create_session (Seat *seat, gboolean autostart)
623 session = SEAT_GET_CLASS (seat)->create_session (seat);
624 seat->priv->sessions = g_list_append (seat->priv->sessions, session);
626 g_signal_connect (session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
627 g_signal_connect (session, "stopped", G_CALLBACK (session_stopped_cb), seat);
629 set_session_env (session);
631 g_signal_emit (seat, signals[SESSION_ADDED], 0, session);
637 get_session_argv (SessionConfig *session_config, const gchar *session_wrapper)
642 GError *error = NULL;
644 /* If configured, run sessions through a wrapper */
647 argv = g_malloc (sizeof (gchar *) * 3);
648 path = g_find_program_in_path (session_wrapper);
649 argv[0] = path ? path : g_strdup (session_wrapper);
650 argv[1] = g_strdup (session_config_get_command (session_config));
655 /* Split command into an array listing and make command absolute */
656 result = g_shell_parse_argv (session_config_get_command (session_config), &argc, &argv, &error);
658 g_debug ("Invalid session command '%s': %s", session_config_get_command (session_config), error->message);
659 g_clear_error (&error);
662 path = g_find_program_in_path (argv[0]);
672 static SessionConfig *
673 find_session_config (const gchar *sessions_dir, const gchar *session_name)
676 SessionConfig *session_config = NULL;
678 GError *error = NULL;
680 g_return_val_if_fail (sessions_dir != NULL, NULL);
681 g_return_val_if_fail (session_name != NULL, NULL);
683 dirs = g_strsplit (sessions_dir, ":", -1);
684 for (i = 0; dirs[i]; i++)
686 gchar *filename, *path;
688 filename = g_strdup_printf ("%s.desktop", session_name);
689 path = g_build_filename (dirs[i], filename, NULL);
691 session_config = session_config_new_from_file (path, &error);
696 if (dirs[i+1] == NULL)
697 g_debug ("Failed to find session configuration %s", session_name);
698 g_clear_error (&error);
702 return session_config;
706 create_user_session (Seat *seat, const gchar *username)
710 const gchar *session_name, *language;
711 SessionConfig *session_config;
712 Session *session = NULL;
714 g_debug ("Creating user session");
716 /* Load user preferences */
717 user = accounts_get_user_by_name (username);
720 g_debug ("Can't login unknown user '%s'", username);
723 session_name = user_get_xsession (user);
724 language = user_get_language (user);
727 session_name = seat_get_string_property (seat, "user-session");
728 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
729 session_config = find_session_config (sessions_dir, session_name);
730 g_free (sessions_dir);
735 session = create_session (seat, TRUE);
736 session_set_env (session, "DESKTOP_SESSION", session_name);
737 session_set_env (session, "GDMSESSION", session_name);
738 if (language && language[0] != '\0')
740 session_set_env (session, "LANG", language);
741 session_set_env (session, "GDM_LANG", language);
743 session_set_pam_service (session, AUTOLOGIN_SERVICE);
744 session_set_username (session, username);
745 session_set_do_authenticate (session, TRUE);
746 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
747 session_set_argv (session, argv);
750 g_object_unref (session_config);
753 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
756 g_object_unref (user);
762 create_guest_session (Seat *seat)
764 gchar *sessions_dir, **argv;
765 SessionConfig *session_config;
768 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
769 session_config = find_session_config (sessions_dir, seat_get_string_property (seat, "user-session"));
770 g_free (sessions_dir);
773 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
777 session = create_session (seat, TRUE);
778 session_set_do_authenticate (session, TRUE);
779 session_set_is_guest (session, TRUE);
780 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
781 g_object_unref (session_config);
782 session_set_argv (session, argv);
789 greeter_create_session_cb (Greeter *greeter, Seat *seat)
793 session = create_session (seat, FALSE);
794 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
796 return g_object_ref (session);
800 prepend_argv (gchar ***argv, const gchar *value)
802 gchar **old_argv, **new_argv;
806 new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
807 new_argv[0] = g_strdup (value);
808 for (i = 0; old_argv[i]; i++)
809 new_argv[i + 1] = old_argv[i];
810 new_argv[i + 1] = NULL;
817 find_user_session (Seat *seat, const gchar *username)
824 for (link = seat->priv->sessions; link; link = link->next)
826 Session *session = link->data;
828 if (!session_get_is_stopping (session) && strcmp (session_get_username (session), username) == 0)
836 greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Seat *seat)
838 Session *session, *existing_session;
839 const gchar *username, *language = NULL;
840 SessionConfig *session_config;
842 gchar *sessions_dir = NULL;
845 /* Get the session to use */
846 if (greeter_get_guest_authenticated (greeter))
848 session = create_guest_session (seat);
851 session_set_pam_service (session, AUTOLOGIN_SERVICE);
854 session = greeter_get_authentication_session (greeter);
856 /* Switch to this session when it is ready */
857 if (seat->priv->session_to_activate)
858 g_object_unref (seat->priv->session_to_activate);
859 seat->priv->session_to_activate = g_object_ref (session);
861 /* Return to existing session if it is open */
862 username = session_get_username (session);
863 existing_session = find_user_session (seat, username);
864 if (existing_session && session != existing_session)
866 g_debug ("Returning to existing user session %s", username);
867 session_stop (session);
868 seat_set_active_session (seat, existing_session);
872 /* Get session command to run */
875 case SESSION_TYPE_LOCAL:
876 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
878 case SESSION_TYPE_REMOTE:
879 sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
883 /* Load user preferences */
884 user = session_get_user (session);
888 session_name = user_get_xsession (user);
889 language = user_get_language (user);
893 session_name = seat_get_string_property (seat, "user-session");
895 user_set_xsession (session_get_user (session), session_name);
897 session_config = find_session_config (sessions_dir, session_name);
898 g_free (sessions_dir);
901 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
905 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
906 g_object_unref (session_config);
907 session_set_argv (session, argv);
909 session_set_env (session, "DESKTOP_SESSION", session_name);
910 session_set_env (session, "GDMSESSION", session_name);
911 if (language && language[0] != '\0')
913 session_set_env (session, "LANG", language);
914 session_set_env (session, "GDM_LANG", language);
917 /* If can re-use the display server, stop the greeter first */
918 if (seat->priv->share_display_server)
920 g_debug ("Stopping greeter; display server will be re-used for user session");
922 /* Run on the same display server after the greeter has stopped */
923 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
925 /* Stop the greeter */
926 session_stop (SESSION (greeter));
930 /* Otherwise start a new display server for this session */
933 DisplayServer *display_server;
935 display_server = create_display_server (seat);
936 if (!display_server_start (display_server))
939 session_set_display_server (session, display_server);
946 create_greeter_session (Seat *seat)
948 gchar *sessions_dir, **argv;
949 SessionConfig *session_config;
950 Greeter *greeter_session;
952 const gchar *greeter_wrapper;
954 g_debug ("Creating greeter session");
956 sessions_dir = config_get_string (config_get_instance (), "LightDM", "greeters-directory");
957 session_config = find_session_config (sessions_dir, seat_get_string_property (seat, "greeter-session"));
958 g_free (sessions_dir);
962 argv = get_session_argv (session_config, NULL);
963 greeter_wrapper = seat_get_string_property (seat, "greeter-wrapper");
967 path = g_find_program_in_path (greeter_wrapper);
968 prepend_argv (&argv, path ? path : greeter_wrapper);
972 greeter_session = SEAT_GET_CLASS (seat)->create_greeter_session (seat);
973 seat->priv->sessions = g_list_append (seat->priv->sessions, SESSION (greeter_session));
974 g_signal_connect (greeter_session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
975 g_signal_connect (greeter_session, "stopped", G_CALLBACK (session_stopped_cb), seat);
977 set_session_env (SESSION (greeter_session));
979 session_set_pam_service (SESSION (greeter_session), GREETER_SERVICE);
980 greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
981 session_set_username (SESSION (greeter_session), greeter_user);
982 g_free (greeter_user);
983 session_set_argv (SESSION (greeter_session), argv);
986 greeter_set_pam_services (greeter_session, USER_SERVICE, AUTOLOGIN_SERVICE);
987 g_signal_connect (greeter_session, "create-session", G_CALLBACK (greeter_create_session_cb), seat);
988 g_signal_connect (greeter_session, "start-session", G_CALLBACK (greeter_start_session_cb), seat);
990 /* Set hints to greeter */
991 greeter_set_hint (greeter_session, "default-session", seat_get_string_property (seat, "user-session"));
992 greeter_set_allow_guest (greeter_session, seat_get_allow_guest (seat));
993 greeter_set_hint (greeter_session, "hide-users", seat_get_boolean_property (seat, "greeter-hide-users") ? "true" : "false");
994 greeter_set_hint (greeter_session, "show-manual-login", seat_get_boolean_property (seat, "greeter-show-manual-login") ? "true" : "false");
995 greeter_set_hint (greeter_session, "show-remote-login", seat_get_boolean_property (seat, "greeter-show-remote-login") ? "true" : "false");
996 greeter_set_hint (greeter_session, "has-guest-account", seat_get_allow_guest (seat) && seat_get_boolean_property (seat, "greeter-allow-guest") ? "true" : "false");
998 g_object_unref (session_config);
1000 return greeter_session;
1004 find_session_for_display_server (Seat *seat, DisplayServer *display_server)
1008 for (link = seat->priv->sessions; link; link = link->next)
1010 Session *session = link->data;
1011 if (session_get_display_server (session) == display_server && !session_get_is_stopping (session))
1019 display_server_ready_cb (DisplayServer *display_server, Seat *seat)
1021 const gchar *script;
1024 /* Run setup script */
1025 script = seat_get_string_property (seat, "display-setup-script");
1026 if (script && !run_script (seat, display_server, script, NULL))
1028 g_debug ("Stopping display server due to failed setup script");
1029 display_server_stop (display_server);
1033 /* Stop if don't need to run a session */
1034 if (!get_start_local_sessions (seat))
1037 emit_upstart_signal ("login-session-start");
1039 /* Start the session waiting for this display server */
1040 session = find_session_for_display_server (seat, display_server);
1043 if (session_get_is_authenticated (session))
1045 g_debug ("Display server ready, running session");
1046 run_session (seat, session);
1050 g_debug ("Display server ready, starting session authentication");
1051 start_session (seat, session);
1056 g_debug ("Stopping not required display server");
1057 display_server_stop (display_server);
1061 static DisplayServer *
1062 create_display_server (Seat *seat)
1064 DisplayServer *display_server;
1066 g_debug ("Creating display server");
1068 display_server = SEAT_GET_CLASS (seat)->create_display_server (seat);
1069 seat->priv->display_servers = g_list_append (seat->priv->display_servers, display_server);
1070 g_signal_connect (display_server, "ready", G_CALLBACK (display_server_ready_cb), seat);
1071 g_signal_connect (display_server, "stopped", G_CALLBACK (display_server_stopped_cb), seat);
1073 return display_server;
1077 find_greeter_session (Seat *seat)
1081 for (link = seat->priv->sessions; link; link = link->next)
1083 Session *session = link->data;
1084 if (!session_get_is_stopping (session) && IS_GREETER (session))
1085 return GREETER (session);
1092 seat_switch_to_greeter (Seat *seat)
1094 Greeter *greeter_session;
1095 DisplayServer *display_server;
1097 g_return_val_if_fail (seat != NULL, FALSE);
1099 if (!seat->priv->can_switch)
1102 /* Switch to greeter if one open (shouldn't be though) */
1103 greeter_session = find_greeter_session (seat);
1104 if (greeter_session)
1106 g_debug ("Switching to existing greeter");
1107 seat_set_active_session (seat, SESSION (greeter_session));
1111 greeter_session = create_greeter_session (seat);
1112 if (seat->priv->session_to_activate)
1113 g_object_unref (seat->priv->session_to_activate);
1114 seat->priv->session_to_activate = g_object_ref (greeter_session);
1116 display_server = create_display_server (seat);
1117 session_set_display_server (SESSION (greeter_session), display_server);
1118 if (!display_server_start (display_server))
1125 seat_switch_to_user (Seat *seat, const gchar *username, const gchar *session_name)
1128 DisplayServer *display_server;
1130 g_return_val_if_fail (seat != NULL, FALSE);
1131 g_return_val_if_fail (username != NULL, FALSE);
1133 if (!seat->priv->can_switch)
1136 g_debug ("Switching to user %s", username);
1138 session = find_user_session (seat, username);
1141 g_debug ("Switching to existing user session %s", username);
1142 seat_set_active_session (seat, session);
1146 session = create_user_session (seat, username);
1149 if (seat->priv->session_to_activate)
1150 g_object_unref (seat->priv->session_to_activate);
1151 seat->priv->session_to_activate = g_object_ref (session);
1152 session_set_pam_service (session, USER_SERVICE);
1154 display_server = create_display_server (seat);
1155 session_set_display_server (session, display_server);
1156 if (!display_server_start (display_server))
1163 find_guest_session (Seat *seat)
1167 for (link = seat->priv->sessions; link; link = link->next)
1169 Session *session = link->data;
1170 if (!session_get_is_stopping (session) && session_get_is_guest (session))
1178 seat_switch_to_guest (Seat *seat, const gchar *session_name)
1181 DisplayServer *display_server;
1183 g_return_val_if_fail (seat != NULL, FALSE);
1185 if (!seat->priv->can_switch || !seat_get_allow_guest (seat))
1188 /* Switch to session if one open */
1189 session = find_guest_session (seat);
1192 g_debug ("Switching to existing guest account %s", session_get_username (session));
1193 seat_set_active_session (seat, session);
1197 display_server = create_display_server (seat);
1198 if (!display_server_start (display_server))
1201 session = create_guest_session (seat);
1204 if (seat->priv->session_to_activate)
1205 g_object_unref (seat->priv->session_to_activate);
1206 seat->priv->session_to_activate = g_object_ref (session);
1207 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1208 session_set_display_server (session, display_server);
1214 seat_lock (Seat *seat, const gchar *username)
1216 Greeter *greeter_session;
1217 DisplayServer *display_server;
1219 g_return_val_if_fail (seat != NULL, FALSE);
1221 if (!seat->priv->can_switch)
1224 g_debug ("Locking seat");
1226 /* Switch to greeter if one open (shouldn't be though) */
1227 greeter_session = find_greeter_session (seat);
1228 if (greeter_session)
1230 g_debug ("Switching to existing greeter");
1231 seat_set_active_session (seat, SESSION (greeter_session));
1235 display_server = create_display_server (seat);
1236 if (!display_server_start (display_server))
1239 greeter_session = create_greeter_session (seat);
1240 if (seat->priv->session_to_activate)
1241 g_object_unref (seat->priv->session_to_activate);
1242 seat->priv->session_to_activate = g_object_ref (greeter_session);
1243 greeter_set_hint (greeter_session, "lock-screen", "true");
1245 greeter_set_hint (greeter_session, "select-user", username);
1246 session_set_display_server (SESSION (greeter_session), display_server);
1252 seat_stop (Seat *seat)
1254 g_return_if_fail (seat != NULL);
1256 if (seat->priv->stopping)
1259 g_debug ("Stopping seat");
1260 seat->priv->stopping = TRUE;
1261 SEAT_GET_CLASS (seat)->stop (seat);
1265 seat_get_is_stopping (Seat *seat)
1267 g_return_val_if_fail (seat != NULL, FALSE);
1268 return seat->priv->stopping;
1272 seat_real_get_start_local_sessions (Seat *seat)
1278 seat_real_setup (Seat *seat)
1283 seat_real_start (Seat *seat)
1285 const gchar *autologin_username;
1286 int autologin_timeout;
1287 gboolean autologin_guest;
1288 gboolean autologin_in_background;
1289 Session *session = NULL;
1290 DisplayServer *display_server;
1292 g_debug ("Starting seat");
1294 display_server = create_display_server (seat);
1296 /* If this display server doesn't have a session running on it, just start it */
1297 if (!get_start_local_sessions (seat))
1298 return display_server_start (display_server);
1300 /* Get autologin settings */
1301 autologin_username = seat_get_string_property (seat, "autologin-user");
1302 if (g_strcmp0 (autologin_username, "") == 0)
1303 autologin_username = NULL;
1304 autologin_timeout = seat_get_integer_property (seat, "autologin-user-timeout");
1305 autologin_guest = seat_get_boolean_property (seat, "autologin-guest");
1306 autologin_in_background = seat_get_boolean_property (seat, "autologin-in-background");
1308 /* Autologin if configured */
1309 if (autologin_timeout == 0 || autologin_in_background)
1311 if (autologin_guest)
1312 session = create_guest_session (seat);
1313 else if (autologin_username != NULL)
1314 session = create_user_session (seat, autologin_username);
1318 if (seat->priv->session_to_activate)
1319 g_object_unref (seat->priv->session_to_activate);
1320 seat->priv->session_to_activate = g_object_ref (session);
1321 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1324 /* Load in background if required */
1325 if (autologin_in_background && session)
1327 DisplayServer *background_display_server;
1329 background_display_server = create_display_server (seat);
1330 session_set_display_server (session, background_display_server);
1331 if (!display_server_start (background_display_server))
1334 /* Start a greeter as well */
1339 /* Fallback to a greeter */
1342 Greeter *greeter_session;
1344 greeter_session = create_greeter_session (seat);
1345 if (seat->priv->session_to_activate)
1346 g_object_unref (seat->priv->session_to_activate);
1347 seat->priv->session_to_activate = g_object_ref (greeter_session);
1348 session = SESSION (greeter_session);
1350 if (autologin_timeout)
1354 value = g_strdup_printf ("%d", autologin_timeout);
1355 greeter_set_hint (greeter_session, "autologin-timeout", value);
1357 if (autologin_username)
1358 greeter_set_hint (greeter_session, "autologin-user", autologin_username);
1359 if (autologin_guest)
1360 greeter_set_hint (greeter_session, "autologin-guest", "true");
1364 /* Fail if can't start a session */
1371 /* Start display server to show session on */
1372 session_set_display_server (session, display_server);
1373 if (!display_server_start (display_server))
1380 seat_real_create_greeter_session (Seat *seat)
1382 return greeter_new ();
1386 seat_real_create_session (Seat *seat)
1388 return session_new ();
1392 seat_real_set_active_session (Seat *seat, Session *session)
1397 seat_real_get_active_session (Seat *seat)
1403 seat_real_stop (Seat *seat)
1407 check_stopped (seat);
1408 if (seat->priv->stopped)
1411 /* Stop all the display servers and sessions on the seat. Copy the list as
1412 * it might be modified if a display server / session stops during this loop */
1413 list = g_list_copy (seat->priv->display_servers);
1414 for (link = list; link; link = link->next)
1415 g_object_ref (link->data);
1416 for (link = list; link; link = link->next)
1418 DisplayServer *display_server = link->data;
1419 if (!display_server_get_is_stopping (display_server))
1421 g_debug ("Stopping display server");
1422 display_server_stop (display_server);
1425 g_list_free_full (list, g_object_unref);
1426 list = g_list_copy (seat->priv->sessions);
1427 for (link = list; link; link = link->next)
1428 g_object_ref (link->data);
1429 for (link = list; link; link = link->next)
1431 Session *session = link->data;
1432 if (!session_get_is_stopping (session))
1434 g_debug ("Stopping session");
1435 session_stop (session);
1438 g_list_free_full (list, g_object_unref);
1442 seat_init (Seat *seat)
1444 seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_TYPE, SeatPrivate);
1445 seat->priv->properties = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1446 seat->priv->share_display_server = TRUE;
1450 seat_finalize (GObject *object)
1455 self = SEAT (object);
1457 g_hash_table_unref (self->priv->properties);
1458 for (link = self->priv->display_servers; link; link = link->next)
1460 DisplayServer *display_server = link->data;
1461 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1463 g_list_free_full (self->priv->display_servers, g_object_unref);
1464 for (link = self->priv->sessions; link; link = link->next)
1466 Session *session = link->data;
1467 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1469 g_list_free_full (self->priv->sessions, g_object_unref);
1470 if (self->priv->session_to_activate)
1471 g_object_unref (self->priv->session_to_activate);
1473 G_OBJECT_CLASS (seat_parent_class)->finalize (object);
1477 seat_class_init (SeatClass *klass)
1479 GObjectClass *object_class = G_OBJECT_CLASS (klass);
1481 klass->get_start_local_sessions = seat_real_get_start_local_sessions;
1482 klass->setup = seat_real_setup;
1483 klass->start = seat_real_start;
1484 klass->create_greeter_session = seat_real_create_greeter_session;
1485 klass->create_session = seat_real_create_session;
1486 klass->set_active_session = seat_real_set_active_session;
1487 klass->get_active_session = seat_real_get_active_session;
1488 klass->run_script = seat_real_run_script;
1489 klass->stop = seat_real_stop;
1491 object_class->finalize = seat_finalize;
1493 g_type_class_add_private (klass, sizeof (SeatPrivate));
1495 signals[SESSION_ADDED] =
1496 g_signal_new ("session-added",
1497 G_TYPE_FROM_CLASS (klass),
1499 G_STRUCT_OFFSET (SeatClass, session_added),
1502 G_TYPE_NONE, 1, SESSION_TYPE);
1503 signals[RUNNING_USER_SESSION] =
1504 g_signal_new ("running-user-session",
1505 G_TYPE_FROM_CLASS (klass),
1507 G_STRUCT_OFFSET (SeatClass, running_user_session),
1510 G_TYPE_NONE, 1, SESSION_TYPE);
1511 signals[SESSION_REMOVED] =
1512 g_signal_new ("session-removed",
1513 G_TYPE_FROM_CLASS (klass),
1515 G_STRUCT_OFFSET (SeatClass, session_removed),
1518 G_TYPE_NONE, 1, SESSION_TYPE);
1520 g_signal_new ("stopped",
1521 G_TYPE_FROM_CLASS (klass),
1523 G_STRUCT_OFFSET (SeatClass, stopped),