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 if (session_start (session))
409 if (IS_GREETER (session))
411 g_debug ("Failed to start greeter");
412 display_server_stop (session_get_display_server (session));
416 g_debug ("Failed to start session, starting greeter");
417 switch_to_greeter_from_failed_session (seat, session);
421 run_session (Seat *seat, Session *session)
425 if (IS_GREETER (session))
426 script = seat_get_string_property (seat, "greeter-setup-script");
428 script = seat_get_string_property (seat, "session-setup-script");
429 if (script && !run_script (seat, session_get_display_server (session), script, NULL))
431 g_debug ("Switching to greeter due to failed setup script");
432 switch_to_greeter_from_failed_session (seat, session);
436 if (!IS_GREETER (session))
437 g_signal_emit (seat, signals[RUNNING_USER_SESSION], 0, session);
439 session_run (session);
441 // FIXME: Wait until the session is ready
443 if (session == seat->priv->session_to_activate)
445 seat_set_active_session (seat, session);
446 g_object_unref (seat->priv->session_to_activate);
447 seat->priv->session_to_activate = NULL;
452 session_authentication_complete_cb (Session *session, Seat *seat)
454 if (session_get_is_authenticated (session))
456 g_debug ("Session authenticated, running command");
457 run_session (seat, session);
459 else if (!IS_GREETER (session))
461 g_debug ("Switching to greeter due to failed authentication");
462 switch_to_greeter_from_failed_session (seat, session);
466 g_debug ("Stopping session that failed authentication");
467 session_stop (session);
472 session_stopped_cb (Session *session, Seat *seat)
474 DisplayServer *display_server;
476 g_debug ("Session stopped");
478 display_server = session_get_display_server (session);
481 if (!IS_GREETER (session))
484 script = seat_get_string_property (seat, "session-cleanup-script");
486 run_script (seat, display_server, script, session_get_user (session));
489 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
490 seat->priv->sessions = g_list_remove (seat->priv->sessions, session);
492 /* We were waiting for this session, but it didn't start :( */
493 // FIXME: Start a greeter on this?
494 if (session == seat->priv->session_to_activate)
496 g_object_unref (seat->priv->session_to_activate);
497 seat->priv->session_to_activate = NULL;
500 if (seat->priv->stopping)
502 check_stopped (seat);
503 g_object_unref (session);
507 /* If this is the greeter session then re-use this display server */
508 if (IS_GREETER (session) && seat->priv->share_display_server &&
509 greeter_get_start_session (GREETER (session)))
513 for (link = seat->priv->sessions; link; link = link->next)
515 Session *s = link->data;
517 /* Skip this session and sessions on other display servers */
518 if (s == session || session_get_display_server (s) != display_server || session_get_is_stopping (s))
521 if (session_get_is_authenticated (s))
523 g_debug ("Greeter stopped, running session");
524 run_session (seat, s);
528 g_debug ("Greeter stopped, starting session authentication");
529 start_session (seat, s);
534 /* If this is the greeter and nothing else is running then stop the seat */
535 else if (IS_GREETER (session) &&
536 !greeter_get_start_session (GREETER (session)) &&
537 g_list_length (seat->priv->display_servers) == 1 &&
538 g_list_nth_data (seat->priv->display_servers, 0) == display_server)
540 g_debug ("Stopping seat, failed to start a greeter");
543 /* If we were the active session, switch to a greeter */
544 else if (!IS_GREETER (session) && session == seat_get_active_session (seat))
546 g_debug ("Active session stopped, starting greeter");
547 seat_switch_to_greeter (seat);
550 /* Stop the display server if no-longer required */
551 if (display_server && !display_server_get_is_stopping (display_server))
556 for (link = seat->priv->sessions; link; link = link->next)
558 Session *s = link->data;
561 if (session_get_display_server (s) == display_server)
566 g_debug ("Stopping display server, no sessions require it");
567 display_server_stop (display_server);
571 g_signal_emit (seat, signals[SESSION_REMOVED], 0, session);
572 g_object_unref (session);
576 set_session_env (Session *session)
578 /* Connect using the session bus */
581 if (g_getenv ("DBUS_SESSION_BUS_ADDRESS"))
582 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
583 session_set_env (session, "LDM_BUS", "SESSION");
584 if (g_getenv ("LD_PRELOAD"))
585 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
586 if (g_getenv ("LD_LIBRARY_PATH"))
587 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
588 if (g_getenv ("PATH"))
589 session_set_env (session, "PATH", g_getenv ("PATH"));
592 /* Variables required for regression tests */
593 if (g_getenv ("LIGHTDM_TEST_ROOT"))
595 session_set_env (session, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
596 session_set_env (session, "DBUS_SYSTEM_BUS_ADDRESS", g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
597 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
598 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
599 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
600 session_set_env (session, "GI_TYPELIB_PATH", g_getenv ("GI_TYPELIB_PATH"));
605 create_session (Seat *seat, gboolean autostart)
609 session = SEAT_GET_CLASS (seat)->create_session (seat);
610 seat->priv->sessions = g_list_append (seat->priv->sessions, session);
612 g_signal_connect (session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
613 g_signal_connect (session, "stopped", G_CALLBACK (session_stopped_cb), seat);
615 set_session_env (session);
617 g_signal_emit (seat, signals[SESSION_ADDED], 0, session);
623 get_session_argv (SessionConfig *session_config, const gchar *session_wrapper)
628 GError *error = NULL;
630 /* If configured, run sessions through a wrapper */
633 argv = g_malloc (sizeof (gchar *) * 3);
634 path = g_find_program_in_path (session_wrapper);
635 argv[0] = path ? path : g_strdup (session_wrapper);
636 argv[1] = g_strdup (session_config_get_command (session_config));
641 /* Split command into an array listing and make command absolute */
642 result = g_shell_parse_argv (session_config_get_command (session_config), &argc, &argv, &error);
644 g_debug ("Invalid session command '%s': %s", session_config_get_command (session_config), error->message);
645 g_clear_error (&error);
648 path = g_find_program_in_path (argv[0]);
658 static SessionConfig *
659 find_session_config (const gchar *sessions_dir, const gchar *session_name)
662 SessionConfig *session_config = NULL;
664 GError *error = NULL;
666 g_return_val_if_fail (sessions_dir != NULL, NULL);
667 g_return_val_if_fail (session_name != NULL, NULL);
669 dirs = g_strsplit (sessions_dir, ":", -1);
670 for (i = 0; dirs[i]; i++)
672 gchar *filename, *path;
674 filename = g_strdup_printf ("%s.desktop", session_name);
675 path = g_build_filename (dirs[i], filename, NULL);
677 session_config = session_config_new_from_file (path, &error);
682 if (dirs[i+1] == NULL)
683 g_debug ("Failed to find session configuration %s", session_name);
684 g_clear_error (&error);
688 return session_config;
692 create_user_session (Seat *seat, const gchar *username)
696 const gchar *session_name, *language;
697 SessionConfig *session_config;
698 Session *session = NULL;
700 /* Load user preferences */
701 user = accounts_get_user_by_name (username);
704 g_debug ("Can't login unknown user '%s'", username);
707 session_name = user_get_xsession (user);
708 language = user_get_language (user);
711 session_name = seat_get_string_property (seat, "user-session");
712 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
713 session_config = find_session_config (sessions_dir, session_name);
714 g_free (sessions_dir);
719 session = create_session (seat, TRUE);
720 session_set_env (session, "DESKTOP_SESSION", session_name);
721 session_set_env (session, "GDMSESSION", session_name);
722 if (language && language[0] != '\0')
724 session_set_env (session, "LANG", language);
725 session_set_env (session, "GDM_LANG", language);
727 session_set_pam_service (session, AUTOLOGIN_SERVICE);
728 session_set_username (session, username);
729 session_set_do_authenticate (session, TRUE);
730 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
731 session_set_argv (session, argv);
734 g_object_unref (session_config);
737 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
740 g_object_unref (user);
746 create_guest_session (Seat *seat)
748 gchar *sessions_dir, **argv;
749 SessionConfig *session_config;
752 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
753 session_config = find_session_config (sessions_dir, seat_get_string_property (seat, "user-session"));
754 g_free (sessions_dir);
757 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
761 session = create_session (seat, TRUE);
762 session_set_do_authenticate (session, TRUE);
763 session_set_is_guest (session, TRUE);
764 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
765 g_object_unref (session_config);
766 session_set_argv (session, argv);
773 greeter_create_session_cb (Greeter *greeter, Seat *seat)
777 session = create_session (seat, FALSE);
778 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
780 return g_object_ref (session);
784 prepend_argv (gchar ***argv, const gchar *value)
786 gchar **old_argv, **new_argv;
790 new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
791 new_argv[0] = g_strdup (value);
792 for (i = 0; old_argv[i]; i++)
793 new_argv[i + 1] = old_argv[i];
794 new_argv[i + 1] = NULL;
801 find_user_session (Seat *seat, const gchar *username)
808 for (link = seat->priv->sessions; link; link = link->next)
810 Session *session = link->data;
812 if (!session_get_is_stopping (session) && strcmp (session_get_username (session), username) == 0)
820 greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Seat *seat)
822 Session *session, *existing_session;
823 const gchar *username, *language = NULL;
824 SessionConfig *session_config;
826 gchar *sessions_dir = NULL;
829 /* Get the session to use */
830 if (greeter_get_guest_authenticated (greeter))
832 session = create_guest_session (seat);
835 session_set_pam_service (session, AUTOLOGIN_SERVICE);
838 session = greeter_get_authentication_session (greeter);
840 /* Switch to this session when it is ready */
841 if (seat->priv->session_to_activate)
842 g_object_unref (seat->priv->session_to_activate);
843 seat->priv->session_to_activate = g_object_ref (session);
845 /* Return to existing session if it is open */
846 username = session_get_username (session);
847 existing_session = find_user_session (seat, username);
848 if (existing_session && session != existing_session)
850 g_debug ("Returning to existing user session %s", username);
851 session_stop (session);
852 seat_set_active_session (seat, existing_session);
856 /* Get session command to run */
859 case SESSION_TYPE_LOCAL:
860 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
862 case SESSION_TYPE_REMOTE:
863 sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
867 /* Load user preferences */
868 user = session_get_user (session);
872 session_name = user_get_xsession (user);
873 language = user_get_language (user);
877 session_name = seat_get_string_property (seat, "user-session");
879 user_set_xsession (session_get_user (session), session_name);
881 session_config = find_session_config (sessions_dir, session_name);
882 g_free (sessions_dir);
885 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
889 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
890 g_object_unref (session_config);
891 session_set_argv (session, argv);
893 session_set_env (session, "DESKTOP_SESSION", session_name);
894 session_set_env (session, "GDMSESSION", session_name);
895 if (language && language[0] != '\0')
897 session_set_env (session, "LANG", language);
898 session_set_env (session, "GDM_LANG", language);
901 /* If can re-use the display server, stop the greeter first */
902 if (seat->priv->share_display_server)
904 /* Run on the same display server after the greeter has stopped */
905 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
907 g_debug ("Stopping greeter");
908 session_stop (SESSION (greeter));
912 /* Otherwise start a new display server for this session */
915 DisplayServer *display_server;
917 display_server = create_display_server (seat);
918 if (!display_server_start (display_server))
921 session_set_display_server (session, display_server);
928 create_greeter_session (Seat *seat)
930 gchar *sessions_dir, **argv;
931 SessionConfig *session_config;
932 Greeter *greeter_session;
934 const gchar *greeter_wrapper;
936 sessions_dir = config_get_string (config_get_instance (), "LightDM", "greeters-directory");
937 session_config = find_session_config (sessions_dir, seat_get_string_property (seat, "greeter-session"));
938 g_free (sessions_dir);
942 argv = get_session_argv (session_config, NULL);
943 greeter_wrapper = seat_get_string_property (seat, "greeter-wrapper");
947 path = g_find_program_in_path (greeter_wrapper);
948 prepend_argv (&argv, path ? path : greeter_wrapper);
952 greeter_session = SEAT_GET_CLASS (seat)->create_greeter_session (seat);
953 seat->priv->sessions = g_list_append (seat->priv->sessions, SESSION (greeter_session));
954 g_signal_connect (greeter_session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
955 g_signal_connect (greeter_session, "stopped", G_CALLBACK (session_stopped_cb), seat);
957 set_session_env (SESSION (greeter_session));
959 session_set_pam_service (SESSION (greeter_session), GREETER_SERVICE);
960 greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
961 session_set_username (SESSION (greeter_session), greeter_user);
962 g_free (greeter_user);
963 session_set_argv (SESSION (greeter_session), argv);
966 greeter_set_pam_services (greeter_session, USER_SERVICE, AUTOLOGIN_SERVICE);
967 g_signal_connect (greeter_session, "create-session", G_CALLBACK (greeter_create_session_cb), seat);
968 g_signal_connect (greeter_session, "start-session", G_CALLBACK (greeter_start_session_cb), seat);
970 /* Set hints to greeter */
971 greeter_set_hint (greeter_session, "default-session", seat_get_string_property (seat, "user-session"));
972 greeter_set_allow_guest (greeter_session, seat_get_allow_guest (seat));
973 greeter_set_hint (greeter_session, "hide-users", seat_get_boolean_property (seat, "greeter-hide-users") ? "true" : "false");
974 greeter_set_hint (greeter_session, "show-manual-login", seat_get_boolean_property (seat, "greeter-show-manual-login") ? "true" : "false");
975 greeter_set_hint (greeter_session, "show-remote-login", seat_get_boolean_property (seat, "greeter-show-remote-login") ? "true" : "false");
976 greeter_set_hint (greeter_session, "has-guest-account", seat_get_allow_guest (seat) && seat_get_boolean_property (seat, "greeter-allow-guest") ? "true" : "false");
978 g_object_unref (session_config);
980 return greeter_session;
984 find_session_for_display_server (Seat *seat, DisplayServer *display_server)
988 for (link = seat->priv->sessions; link; link = link->next)
990 Session *session = link->data;
991 if (session_get_display_server (session) == display_server && !session_get_is_stopping (session))
999 display_server_ready_cb (DisplayServer *display_server, Seat *seat)
1001 const gchar *script;
1004 /* Run setup script */
1005 script = seat_get_string_property (seat, "display-setup-script");
1006 if (script && !run_script (seat, display_server, script, NULL))
1008 g_debug ("Stopping display server due to failed setup script");
1009 display_server_stop (display_server);
1013 /* Stop if don't need to run a session */
1014 if (!get_start_local_sessions (seat))
1017 emit_upstart_signal ("login-session-start");
1019 /* Start the session waiting for this display server */
1020 session = find_session_for_display_server (seat, display_server);
1023 if (session_get_is_authenticated (session))
1025 g_debug ("Display server ready, running session");
1026 run_session (seat, session);
1030 g_debug ("Display server ready, starting session authentication");
1031 start_session (seat, session);
1036 g_debug ("Stopping not required display server");
1037 display_server_stop (display_server);
1041 static DisplayServer *
1042 create_display_server (Seat *seat)
1044 DisplayServer *display_server;
1046 display_server = SEAT_GET_CLASS (seat)->create_display_server (seat);
1047 seat->priv->display_servers = g_list_append (seat->priv->display_servers, display_server);
1048 g_signal_connect (display_server, "ready", G_CALLBACK (display_server_ready_cb), seat);
1049 g_signal_connect (display_server, "stopped", G_CALLBACK (display_server_stopped_cb), seat);
1051 return display_server;
1055 find_greeter_session (Seat *seat)
1059 for (link = seat->priv->sessions; link; link = link->next)
1061 Session *session = link->data;
1062 if (!session_get_is_stopping (session) && IS_GREETER (session))
1063 return GREETER (session);
1070 seat_switch_to_greeter (Seat *seat)
1072 Greeter *greeter_session;
1073 DisplayServer *display_server;
1075 g_return_val_if_fail (seat != NULL, FALSE);
1077 if (!seat->priv->can_switch)
1080 /* Switch to greeter if one open (shouldn't be though) */
1081 greeter_session = find_greeter_session (seat);
1082 if (greeter_session)
1084 g_debug ("Switching to existing greeter");
1085 seat_set_active_session (seat, SESSION (greeter_session));
1089 greeter_session = create_greeter_session (seat);
1090 if (seat->priv->session_to_activate)
1091 g_object_unref (seat->priv->session_to_activate);
1092 seat->priv->session_to_activate = g_object_ref (greeter_session);
1094 display_server = create_display_server (seat);
1095 session_set_display_server (SESSION (greeter_session), display_server);
1096 if (!display_server_start (display_server))
1103 seat_switch_to_user (Seat *seat, const gchar *username, const gchar *session_name)
1106 DisplayServer *display_server;
1108 g_return_val_if_fail (seat != NULL, FALSE);
1109 g_return_val_if_fail (username != NULL, FALSE);
1111 if (!seat->priv->can_switch)
1114 g_debug ("Switching to user %s", username);
1116 session = find_user_session (seat, username);
1119 g_debug ("Switching to existing user session %s", username);
1120 seat_set_active_session (seat, session);
1124 session = create_user_session (seat, username);
1127 if (seat->priv->session_to_activate)
1128 g_object_unref (seat->priv->session_to_activate);
1129 seat->priv->session_to_activate = g_object_ref (session);
1130 session_set_pam_service (session, USER_SERVICE);
1132 display_server = create_display_server (seat);
1133 session_set_display_server (session, display_server);
1134 if (!display_server_start (display_server))
1141 find_guest_session (Seat *seat)
1145 for (link = seat->priv->sessions; link; link = link->next)
1147 Session *session = link->data;
1148 if (!session_get_is_stopping (session) && session_get_is_guest (session))
1156 seat_switch_to_guest (Seat *seat, const gchar *session_name)
1159 DisplayServer *display_server;
1161 g_return_val_if_fail (seat != NULL, FALSE);
1163 if (!seat->priv->can_switch || !seat_get_allow_guest (seat))
1166 /* Switch to session if one open */
1167 session = find_guest_session (seat);
1170 g_debug ("Switching to existing guest account %s", session_get_username (session));
1171 seat_set_active_session (seat, session);
1175 display_server = create_display_server (seat);
1176 if (!display_server_start (display_server))
1179 session = create_guest_session (seat);
1182 if (seat->priv->session_to_activate)
1183 g_object_unref (seat->priv->session_to_activate);
1184 seat->priv->session_to_activate = g_object_ref (session);
1185 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1186 session_set_display_server (session, display_server);
1192 seat_lock (Seat *seat, const gchar *username)
1194 Greeter *greeter_session;
1195 DisplayServer *display_server;
1197 g_return_val_if_fail (seat != NULL, FALSE);
1199 if (!seat->priv->can_switch)
1202 g_debug ("Locking seat");
1204 /* Switch to greeter if one open (shouldn't be though) */
1205 greeter_session = find_greeter_session (seat);
1206 if (greeter_session)
1208 g_debug ("Switching to existing greeter");
1209 seat_set_active_session (seat, SESSION (greeter_session));
1213 display_server = create_display_server (seat);
1214 if (!display_server_start (display_server))
1217 greeter_session = create_greeter_session (seat);
1218 if (seat->priv->session_to_activate)
1219 g_object_unref (seat->priv->session_to_activate);
1220 seat->priv->session_to_activate = g_object_ref (greeter_session);
1221 greeter_set_hint (greeter_session, "lock-screen", "true");
1223 greeter_set_hint (greeter_session, "select-user", username);
1224 session_set_display_server (SESSION (greeter_session), display_server);
1230 seat_stop (Seat *seat)
1232 g_return_if_fail (seat != NULL);
1234 if (seat->priv->stopping)
1237 g_debug ("Stopping seat");
1238 seat->priv->stopping = TRUE;
1239 SEAT_GET_CLASS (seat)->stop (seat);
1243 seat_get_is_stopping (Seat *seat)
1245 g_return_val_if_fail (seat != NULL, FALSE);
1246 return seat->priv->stopping;
1250 seat_real_get_start_local_sessions (Seat *seat)
1256 seat_real_setup (Seat *seat)
1261 seat_real_start (Seat *seat)
1263 const gchar *autologin_username;
1264 int autologin_timeout;
1265 gboolean autologin_guest;
1266 gboolean autologin_in_background;
1267 Session *session = NULL;
1268 DisplayServer *display_server;
1270 g_debug ("Starting seat");
1272 display_server = create_display_server (seat);
1274 /* If this display server doesn't have a session running on it, just start it */
1275 if (!get_start_local_sessions (seat))
1276 return display_server_start (display_server);
1278 /* Get autologin settings */
1279 autologin_username = seat_get_string_property (seat, "autologin-user");
1280 if (g_strcmp0 (autologin_username, "") == 0)
1281 autologin_username = NULL;
1282 autologin_timeout = seat_get_integer_property (seat, "autologin-user-timeout");
1283 autologin_guest = seat_get_boolean_property (seat, "autologin-guest");
1284 autologin_in_background = seat_get_boolean_property (seat, "autologin-in-background");
1286 /* Autologin if configured */
1287 if (autologin_timeout == 0 || autologin_in_background)
1289 if (autologin_guest)
1290 session = create_guest_session (seat);
1291 else if (autologin_username != NULL)
1292 session = create_user_session (seat, autologin_username);
1296 if (seat->priv->session_to_activate)
1297 g_object_unref (seat->priv->session_to_activate);
1298 seat->priv->session_to_activate = g_object_ref (session);
1299 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1302 /* Load in background if required */
1303 if (autologin_in_background && session)
1305 DisplayServer *background_display_server;
1307 background_display_server = create_display_server (seat);
1308 session_set_display_server (session, background_display_server);
1309 if (!display_server_start (background_display_server))
1312 /* Start a greeter as well */
1317 /* Fallback to a greeter */
1320 Greeter *greeter_session;
1322 greeter_session = create_greeter_session (seat);
1323 if (seat->priv->session_to_activate)
1324 g_object_unref (seat->priv->session_to_activate);
1325 seat->priv->session_to_activate = g_object_ref (greeter_session);
1326 session = SESSION (greeter_session);
1328 if (autologin_timeout)
1332 value = g_strdup_printf ("%d", autologin_timeout);
1333 greeter_set_hint (greeter_session, "autologin-timeout", value);
1335 if (autologin_username)
1336 greeter_set_hint (greeter_session, "autologin-user", autologin_username);
1337 if (autologin_guest)
1338 greeter_set_hint (greeter_session, "autologin-guest", "true");
1342 /* Fail if can't start a session */
1349 /* Start display server to show session on */
1350 session_set_display_server (session, display_server);
1351 if (!display_server_start (display_server))
1358 seat_real_set_active_session (Seat *seat, Session *session)
1363 seat_real_get_active_session (Seat *seat)
1369 seat_real_stop (Seat *seat)
1373 check_stopped (seat);
1374 if (seat->priv->stopped)
1377 /* Stop all the display servers and sessions on the seat. Copy the list as
1378 * it might be modified if a display server / session stops during this loop */
1379 list = g_list_copy (seat->priv->display_servers);
1380 for (link = list; link; link = link->next)
1381 g_object_ref (link->data);
1382 for (link = list; link; link = link->next)
1384 DisplayServer *display_server = link->data;
1385 if (!display_server_get_is_stopping (display_server))
1387 g_debug ("Stopping display server");
1388 display_server_stop (display_server);
1391 g_list_free_full (list, g_object_unref);
1392 list = g_list_copy (seat->priv->sessions);
1393 for (link = list; link; link = link->next)
1394 g_object_ref (link->data);
1395 for (link = list; link; link = link->next)
1397 Session *session = link->data;
1398 if (!session_get_is_stopping (session))
1400 g_debug ("Stopping session");
1401 session_stop (session);
1404 g_list_free_full (list, g_object_unref);
1408 seat_init (Seat *seat)
1410 seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_TYPE, SeatPrivate);
1411 seat->priv->properties = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1412 seat->priv->share_display_server = TRUE;
1416 seat_finalize (GObject *object)
1421 self = SEAT (object);
1423 g_hash_table_unref (self->priv->properties);
1424 for (link = self->priv->display_servers; link; link = link->next)
1426 DisplayServer *display_server = link->data;
1427 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1429 g_list_free_full (self->priv->display_servers, g_object_unref);
1430 for (link = self->priv->sessions; link; link = link->next)
1432 Session *session = link->data;
1433 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1435 g_list_free_full (self->priv->sessions, g_object_unref);
1436 if (self->priv->session_to_activate)
1437 g_object_unref (self->priv->session_to_activate);
1439 G_OBJECT_CLASS (seat_parent_class)->finalize (object);
1443 seat_class_init (SeatClass *klass)
1445 GObjectClass *object_class = G_OBJECT_CLASS (klass);
1447 klass->get_start_local_sessions = seat_real_get_start_local_sessions;
1448 klass->setup = seat_real_setup;
1449 klass->start = seat_real_start;
1450 klass->set_active_session = seat_real_set_active_session;
1451 klass->get_active_session = seat_real_get_active_session;
1452 klass->run_script = seat_real_run_script;
1453 klass->stop = seat_real_stop;
1455 object_class->finalize = seat_finalize;
1457 g_type_class_add_private (klass, sizeof (SeatPrivate));
1459 signals[SESSION_ADDED] =
1460 g_signal_new ("session-added",
1461 G_TYPE_FROM_CLASS (klass),
1463 G_STRUCT_OFFSET (SeatClass, session_added),
1466 G_TYPE_NONE, 1, SESSION_TYPE);
1467 signals[RUNNING_USER_SESSION] =
1468 g_signal_new ("running-user-session",
1469 G_TYPE_FROM_CLASS (klass),
1471 G_STRUCT_OFFSET (SeatClass, running_user_session),
1474 G_TYPE_NONE, 1, SESSION_TYPE);
1475 signals[SESSION_REMOVED] =
1476 g_signal_new ("session-removed",
1477 G_TYPE_FROM_CLASS (klass),
1479 G_STRUCT_OFFSET (SeatClass, session_removed),
1482 G_TYPE_NONE, 1, SESSION_TYPE);
1484 g_signal_new ("stopped",
1485 G_TYPE_FROM_CLASS (klass),
1487 G_STRUCT_OFFSET (SeatClass, stopped),