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 g_object_unref (session_config);
726 session_set_argv (session, argv);
730 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
732 g_object_unref (user);
738 create_guest_session (Seat *seat)
740 gchar *sessions_dir, **argv;
741 SessionConfig *session_config;
744 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
745 session_config = find_session_config (sessions_dir, seat_get_string_property (seat, "user-session"));
746 g_free (sessions_dir);
749 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
753 session = create_session (seat, TRUE);
754 session_set_do_authenticate (session, TRUE);
755 session_set_is_guest (session, TRUE);
756 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
757 g_object_unref (session_config);
758 session_set_argv (session, argv);
765 greeter_create_session_cb (Greeter *greeter, Seat *seat)
769 session = create_session (seat, FALSE);
770 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
772 return g_object_ref (session);
776 prepend_argv (gchar ***argv, const gchar *value)
778 gchar **old_argv, **new_argv;
782 new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
783 new_argv[0] = g_strdup (value);
784 for (i = 0; old_argv[i]; i++)
785 new_argv[i + 1] = old_argv[i];
786 new_argv[i + 1] = NULL;
793 find_user_session (Seat *seat, const gchar *username)
800 for (link = seat->priv->sessions; link; link = link->next)
802 Session *session = link->data;
804 if (!session_get_is_stopping (session) && strcmp (session_get_username (session), username) == 0)
812 greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Seat *seat)
814 Session *session, *existing_session;
815 const gchar *username, *language = NULL;
816 SessionConfig *session_config;
818 gchar *sessions_dir = NULL;
821 /* Get the session to use */
822 if (greeter_get_guest_authenticated (greeter))
824 session = create_guest_session (seat);
827 session_set_pam_service (session, AUTOLOGIN_SERVICE);
830 session = greeter_get_authentication_session (greeter);
832 /* Switch to this session when it is ready */
833 if (seat->priv->session_to_activate)
834 g_object_unref (seat->priv->session_to_activate);
835 seat->priv->session_to_activate = g_object_ref (session);
837 /* Return to existing session if it is open */
838 username = session_get_username (session);
839 existing_session = find_user_session (seat, username);
840 if (existing_session && session != existing_session)
842 g_debug ("Returning to existing user session %s", username);
843 session_stop (session);
844 seat_set_active_session (seat, existing_session);
848 /* Get session command to run */
851 case SESSION_TYPE_LOCAL:
852 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
854 case SESSION_TYPE_REMOTE:
855 sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
859 /* Load user preferences */
860 user = session_get_user (session);
864 session_name = user_get_xsession (user);
865 language = user_get_language (user);
869 session_name = seat_get_string_property (seat, "user-session");
871 user_set_xsession (session_get_user (session), session_name);
873 session_config = find_session_config (sessions_dir, session_name);
874 g_free (sessions_dir);
877 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
881 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
882 g_object_unref (session_config);
883 session_set_argv (session, argv);
885 session_set_env (session, "DESKTOP_SESSION", session_name);
886 session_set_env (session, "GDMSESSION", session_name);
887 if (language && language[0] != '\0')
889 session_set_env (session, "LANG", language);
890 session_set_env (session, "GDM_LANG", language);
893 /* If can re-use the display server, stop the greeter first */
894 if (seat->priv->share_display_server)
896 /* Run on the same display server after the greeter has stopped */
897 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
899 g_debug ("Stopping greeter");
900 session_stop (SESSION (greeter));
904 /* Otherwise start a new display server for this session */
907 DisplayServer *display_server;
909 display_server = create_display_server (seat);
910 if (!display_server_start (display_server))
913 session_set_display_server (session, display_server);
920 create_greeter_session (Seat *seat)
922 gchar *sessions_dir, **argv;
923 SessionConfig *session_config;
924 Greeter *greeter_session;
926 const gchar *greeter_wrapper;
928 sessions_dir = config_get_string (config_get_instance (), "LightDM", "greeters-directory");
929 session_config = find_session_config (sessions_dir, seat_get_string_property (seat, "greeter-session"));
930 g_free (sessions_dir);
934 argv = get_session_argv (session_config, NULL);
935 g_object_unref (session_config);
936 greeter_wrapper = seat_get_string_property (seat, "greeter-wrapper");
940 path = g_find_program_in_path (greeter_wrapper);
941 prepend_argv (&argv, path ? path : greeter_wrapper);
945 greeter_session = SEAT_GET_CLASS (seat)->create_greeter_session (seat);
946 seat->priv->sessions = g_list_append (seat->priv->sessions, SESSION (greeter_session));
947 g_signal_connect (greeter_session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
948 g_signal_connect (greeter_session, "stopped", G_CALLBACK (session_stopped_cb), seat);
950 set_session_env (SESSION (greeter_session));
952 session_set_pam_service (SESSION (greeter_session), GREETER_SERVICE);
953 greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
954 session_set_username (SESSION (greeter_session), greeter_user);
955 g_free (greeter_user);
956 session_set_argv (SESSION (greeter_session), argv);
959 greeter_set_pam_services (greeter_session, USER_SERVICE, AUTOLOGIN_SERVICE);
960 g_signal_connect (greeter_session, "create-session", G_CALLBACK (greeter_create_session_cb), seat);
961 g_signal_connect (greeter_session, "start-session", G_CALLBACK (greeter_start_session_cb), seat);
963 /* Set hints to greeter */
964 greeter_set_hint (greeter_session, "default-session", seat_get_string_property (seat, "user-session"));
965 greeter_set_allow_guest (greeter_session, seat_get_allow_guest (seat));
966 greeter_set_hint (greeter_session, "hide-users", seat_get_boolean_property (seat, "greeter-hide-users") ? "true" : "false");
967 greeter_set_hint (greeter_session, "show-manual-login", seat_get_boolean_property (seat, "greeter-show-manual-login") ? "true" : "false");
968 greeter_set_hint (greeter_session, "show-remote-login", seat_get_boolean_property (seat, "greeter-show-remote-login") ? "true" : "false");
969 greeter_set_hint (greeter_session, "has-guest-account", seat_get_allow_guest (seat) && seat_get_boolean_property (seat, "greeter-allow-guest") ? "true" : "false");
971 return greeter_session;
975 find_session_for_display_server (Seat *seat, DisplayServer *display_server)
979 for (link = seat->priv->sessions; link; link = link->next)
981 Session *session = link->data;
982 if (session_get_display_server (session) == display_server && !session_get_is_stopping (session))
990 display_server_ready_cb (DisplayServer *display_server, Seat *seat)
995 /* Run setup script */
996 script = seat_get_string_property (seat, "display-setup-script");
997 if (script && !run_script (seat, display_server, script, NULL))
999 g_debug ("Stopping display server due to failed setup script");
1000 display_server_stop (display_server);
1004 /* Stop if don't need to run a session */
1005 if (!display_server_get_start_local_sessions (display_server))
1008 emit_upstart_signal ("login-session-start");
1010 /* Start the session waiting for this display server */
1011 session = find_session_for_display_server (seat, display_server);
1014 if (session_get_is_authenticated (session))
1016 g_debug ("Display server ready, running session");
1017 run_session (seat, session);
1021 g_debug ("Display server ready, starting session authentication");
1022 start_session (seat, session);
1027 g_debug ("Stopping not required display server");
1028 display_server_stop (display_server);
1032 static DisplayServer *
1033 create_display_server (Seat *seat)
1035 DisplayServer *display_server;
1037 display_server = SEAT_GET_CLASS (seat)->create_display_server (seat, "x");
1038 seat->priv->display_servers = g_list_append (seat->priv->display_servers, display_server);
1039 g_signal_connect (display_server, "ready", G_CALLBACK (display_server_ready_cb), seat);
1040 g_signal_connect (display_server, "stopped", G_CALLBACK (display_server_stopped_cb), seat);
1042 return display_server;
1046 find_greeter_session (Seat *seat)
1050 for (link = seat->priv->sessions; link; link = link->next)
1052 Session *session = link->data;
1053 if (!session_get_is_stopping (session) && IS_GREETER (session))
1054 return GREETER (session);
1061 seat_switch_to_greeter (Seat *seat)
1063 Greeter *greeter_session;
1064 DisplayServer *display_server;
1066 g_return_val_if_fail (seat != NULL, FALSE);
1068 if (!seat->priv->can_switch)
1071 /* Switch to greeter if one open (shouldn't be though) */
1072 greeter_session = find_greeter_session (seat);
1073 if (greeter_session)
1075 g_debug ("Switching to existing greeter");
1076 seat_set_active_session (seat, SESSION (greeter_session));
1080 greeter_session = create_greeter_session (seat);
1081 if (seat->priv->session_to_activate)
1082 g_object_unref (seat->priv->session_to_activate);
1083 seat->priv->session_to_activate = g_object_ref (greeter_session);
1085 display_server = create_display_server (seat);
1086 session_set_display_server (SESSION (greeter_session), display_server);
1087 if (!display_server_start (display_server))
1094 seat_switch_to_user (Seat *seat, const gchar *username, const gchar *session_name)
1097 DisplayServer *display_server;
1099 g_return_val_if_fail (seat != NULL, FALSE);
1100 g_return_val_if_fail (username != NULL, FALSE);
1102 if (!seat->priv->can_switch)
1105 g_debug ("Switching to user %s", username);
1107 session = find_user_session (seat, username);
1110 g_debug ("Switching to existing user session %s", username);
1111 seat_set_active_session (seat, session);
1115 session = create_user_session (seat, username);
1118 if (seat->priv->session_to_activate)
1119 g_object_unref (seat->priv->session_to_activate);
1120 seat->priv->session_to_activate = g_object_ref (session);
1121 session_set_pam_service (session, USER_SERVICE);
1123 display_server = create_display_server (seat);
1124 session_set_display_server (session, display_server);
1125 if (!display_server_start (display_server))
1132 find_guest_session (Seat *seat)
1136 for (link = seat->priv->sessions; link; link = link->next)
1138 Session *session = link->data;
1139 if (!session_get_is_stopping (session) && session_get_is_guest (session))
1147 seat_switch_to_guest (Seat *seat, const gchar *session_name)
1150 DisplayServer *display_server;
1152 g_return_val_if_fail (seat != NULL, FALSE);
1154 if (!seat->priv->can_switch || !seat_get_allow_guest (seat))
1157 /* Switch to session if one open */
1158 session = find_guest_session (seat);
1161 g_debug ("Switching to existing guest account %s", session_get_username (session));
1162 seat_set_active_session (seat, session);
1166 display_server = create_display_server (seat);
1167 if (!display_server_start (display_server))
1170 session = create_guest_session (seat);
1173 if (seat->priv->session_to_activate)
1174 g_object_unref (seat->priv->session_to_activate);
1175 seat->priv->session_to_activate = g_object_ref (session);
1176 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1177 session_set_display_server (session, display_server);
1183 seat_lock (Seat *seat, const gchar *username)
1185 Greeter *greeter_session;
1186 DisplayServer *display_server;
1188 g_return_val_if_fail (seat != NULL, FALSE);
1190 if (!seat->priv->can_switch)
1193 g_debug ("Locking seat");
1195 /* Switch to greeter if one open (shouldn't be though) */
1196 greeter_session = find_greeter_session (seat);
1197 if (greeter_session)
1199 g_debug ("Switching to existing greeter");
1200 seat_set_active_session (seat, SESSION (greeter_session));
1204 display_server = create_display_server (seat);
1205 if (!display_server_start (display_server))
1208 greeter_session = create_greeter_session (seat);
1209 if (seat->priv->session_to_activate)
1210 g_object_unref (seat->priv->session_to_activate);
1211 seat->priv->session_to_activate = g_object_ref (greeter_session);
1212 greeter_set_hint (greeter_session, "lock-screen", "true");
1214 greeter_set_hint (greeter_session, "select-user", username);
1215 session_set_display_server (SESSION (greeter_session), display_server);
1221 seat_stop (Seat *seat)
1223 g_return_if_fail (seat != NULL);
1225 if (seat->priv->stopping)
1228 g_debug ("Stopping seat");
1229 seat->priv->stopping = TRUE;
1230 SEAT_GET_CLASS (seat)->stop (seat);
1234 seat_get_is_stopping (Seat *seat)
1236 g_return_val_if_fail (seat != NULL, FALSE);
1237 return seat->priv->stopping;
1241 seat_real_setup (Seat *seat)
1246 seat_real_start (Seat *seat)
1248 const gchar *autologin_username;
1249 int autologin_timeout;
1250 gboolean autologin_guest;
1251 gboolean autologin_in_background;
1252 Session *session = NULL;
1253 DisplayServer *display_server;
1255 g_debug ("Starting seat");
1257 display_server = create_display_server (seat);
1259 /* If this display server doesn't have a session running on it, just start it */
1260 if (!display_server_get_start_local_sessions (display_server))
1261 return display_server_start (display_server);
1263 /* Get autologin settings */
1264 autologin_username = seat_get_string_property (seat, "autologin-user");
1265 if (g_strcmp0 (autologin_username, "") == 0)
1266 autologin_username = NULL;
1267 autologin_timeout = seat_get_integer_property (seat, "autologin-user-timeout");
1268 autologin_guest = seat_get_boolean_property (seat, "autologin-guest");
1269 autologin_in_background = seat_get_boolean_property (seat, "autologin-in-background");
1271 /* Autologin if configured */
1272 if (autologin_timeout == 0 || autologin_in_background)
1274 if (autologin_guest)
1275 session = create_guest_session (seat);
1276 else if (autologin_username != NULL)
1277 session = create_user_session (seat, autologin_username);
1281 if (seat->priv->session_to_activate)
1282 g_object_unref (seat->priv->session_to_activate);
1283 seat->priv->session_to_activate = g_object_ref (session);
1284 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1287 /* Load in background if required */
1288 if (autologin_in_background && session)
1290 DisplayServer *background_display_server;
1292 background_display_server = create_display_server (seat);
1293 session_set_display_server (session, background_display_server);
1294 if (!display_server_start (background_display_server))
1297 /* Start a greeter as well */
1302 /* Fallback to a greeter */
1305 Greeter *greeter_session;
1307 greeter_session = create_greeter_session (seat);
1308 if (seat->priv->session_to_activate)
1309 g_object_unref (seat->priv->session_to_activate);
1310 seat->priv->session_to_activate = g_object_ref (greeter_session);
1311 session = SESSION (greeter_session);
1313 if (autologin_timeout)
1317 value = g_strdup_printf ("%d", autologin_timeout);
1318 greeter_set_hint (greeter_session, "autologin-timeout", value);
1320 if (autologin_username)
1321 greeter_set_hint (greeter_session, "autologin-user", autologin_username);
1322 if (autologin_guest)
1323 greeter_set_hint (greeter_session, "autologin-guest", "true");
1327 /* Fail if can't start a session */
1334 /* Start display server to show session on */
1335 session_set_display_server (session, display_server);
1336 if (!display_server_start (display_server))
1343 seat_real_set_active_session (Seat *seat, Session *session)
1348 seat_real_get_active_session (Seat *seat)
1354 seat_real_stop (Seat *seat)
1358 check_stopped (seat);
1359 if (seat->priv->stopped)
1362 /* Stop all the display servers and sessions on the seat. Copy the list as
1363 * it might be modified if a display server / session stops during this loop */
1364 list = g_list_copy (seat->priv->display_servers);
1365 for (link = list; link; link = link->next)
1366 g_object_ref (link->data);
1367 for (link = list; link; link = link->next)
1369 DisplayServer *display_server = link->data;
1370 if (!display_server_get_is_stopping (display_server))
1372 g_debug ("Stopping display server");
1373 display_server_stop (display_server);
1376 g_list_free_full (list, g_object_unref);
1377 list = g_list_copy (seat->priv->sessions);
1378 for (link = list; link; link = link->next)
1379 g_object_ref (link->data);
1380 for (link = list; link; link = link->next)
1382 Session *session = link->data;
1383 if (!session_get_is_stopping (session))
1385 g_debug ("Stopping session");
1386 session_stop (session);
1389 g_list_free_full (list, g_object_unref);
1393 seat_init (Seat *seat)
1395 seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_TYPE, SeatPrivate);
1396 seat->priv->properties = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1397 seat->priv->share_display_server = TRUE;
1401 seat_finalize (GObject *object)
1406 self = SEAT (object);
1408 g_hash_table_unref (self->priv->properties);
1409 for (link = self->priv->display_servers; link; link = link->next)
1411 DisplayServer *display_server = link->data;
1412 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1414 g_list_free_full (self->priv->display_servers, g_object_unref);
1415 for (link = self->priv->sessions; link; link = link->next)
1417 Session *session = link->data;
1418 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1420 g_list_free_full (self->priv->sessions, g_object_unref);
1421 if (self->priv->session_to_activate)
1422 g_object_unref (self->priv->session_to_activate);
1424 G_OBJECT_CLASS (seat_parent_class)->finalize (object);
1428 seat_class_init (SeatClass *klass)
1430 GObjectClass *object_class = G_OBJECT_CLASS (klass);
1432 klass->setup = seat_real_setup;
1433 klass->start = seat_real_start;
1434 klass->set_active_session = seat_real_set_active_session;
1435 klass->get_active_session = seat_real_get_active_session;
1436 klass->run_script = seat_real_run_script;
1437 klass->stop = seat_real_stop;
1439 object_class->finalize = seat_finalize;
1441 g_type_class_add_private (klass, sizeof (SeatPrivate));
1443 signals[SESSION_ADDED] =
1444 g_signal_new ("session-added",
1445 G_TYPE_FROM_CLASS (klass),
1447 G_STRUCT_OFFSET (SeatClass, session_added),
1450 G_TYPE_NONE, 1, SESSION_TYPE);
1451 signals[RUNNING_USER_SESSION] =
1452 g_signal_new ("running-user-session",
1453 G_TYPE_FROM_CLASS (klass),
1455 G_STRUCT_OFFSET (SeatClass, running_user_session),
1458 G_TYPE_NONE, 1, SESSION_TYPE);
1459 signals[SESSION_REMOVED] =
1460 g_signal_new ("session-removed",
1461 G_TYPE_FROM_CLASS (klass),
1463 G_STRUCT_OFFSET (SeatClass, session_removed),
1466 G_TYPE_NONE, 1, SESSION_TYPE);
1468 g_signal_new ("stopped",
1469 G_TYPE_FROM_CLASS (klass),
1471 G_STRUCT_OFFSET (SeatClass, stopped),