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"
27 static guint signals[LAST_SIGNAL] = { 0 };
31 /* Configuration for this seat */
32 GHashTable *properties;
34 /* TRUE if able to switch users */
37 /* TRUE if display server can be shared for sessions */
38 gboolean share_display_server;
40 /* The display servers on this seat */
41 GList *display_servers;
43 /* The sessions on this seat */
46 /* TRUE if stopping this seat (waiting for displays to stop) */
53 /* PAM services to use */
54 #define GREETER_SERVICE "lightdm-greeter"
55 #define USER_SERVICE "lightdm"
56 #define AUTOLOGIN_SERVICE "lightdm-autologin"
58 G_DEFINE_TYPE (Seat, seat, G_TYPE_OBJECT);
65 static GHashTable *seat_modules = NULL;
67 static DisplayServer *create_display_server (Seat *seat);
68 static Greeter *create_greeter_session (Seat *seat);
71 seat_register_module (const gchar *name, GType type)
76 seat_modules = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
78 g_debug ("Registered seat module %s", name);
80 module = g_malloc0 (sizeof (SeatModule));
81 module->name = g_strdup (name);
83 g_hash_table_insert (seat_modules, g_strdup (name), module);
87 seat_new (const gchar *module_name)
92 g_return_val_if_fail (module_name != NULL, NULL);
95 m = g_hash_table_lookup (seat_modules, module_name);
99 seat = g_object_new (m->type, NULL);
105 seat_set_property (Seat *seat, const gchar *name, const gchar *value)
107 g_return_if_fail (seat != NULL);
108 g_hash_table_insert (seat->priv->properties, g_strdup (name), g_strdup (value));
112 seat_get_string_property (Seat *seat, const gchar *name)
114 g_return_val_if_fail (seat != NULL, NULL);
115 return g_hash_table_lookup (seat->priv->properties, name);
119 seat_get_boolean_property (Seat *seat, const gchar *name)
121 return g_strcmp0 (seat_get_string_property (seat, name), "true") == 0;
125 seat_get_integer_property (Seat *seat, const gchar *name)
129 value = seat_get_string_property (seat, name);
130 return value ? atoi (value) : 0;
134 seat_set_can_switch (Seat *seat, gboolean can_switch)
136 g_return_if_fail (seat != NULL);
138 seat->priv->can_switch = can_switch;
142 seat_set_share_display_server (Seat *seat, gboolean share_display_server)
144 g_return_if_fail (seat != NULL);
146 seat->priv->share_display_server = share_display_server;
150 seat_start (Seat *seat)
152 g_return_val_if_fail (seat != NULL, FALSE);
154 SEAT_GET_CLASS (seat)->setup (seat);
155 return SEAT_GET_CLASS (seat)->start (seat);
159 seat_get_sessions (Seat *seat)
161 g_return_val_if_fail (seat != NULL, NULL);
162 return seat->priv->sessions;
166 seat_set_active_session (Seat *seat, Session *session)
170 g_return_if_fail (seat != NULL);
172 SEAT_GET_CLASS (seat)->set_active_session (seat, session);
174 /* Stop any greeters */
175 for (link = seat->priv->sessions; link; link = link->next)
177 Session *s = link->data;
184 g_debug ("Stopping greeter");
191 seat_get_active_session (Seat *seat)
193 g_return_val_if_fail (seat != NULL, NULL);
194 return SEAT_GET_CLASS (seat)->get_active_session (seat);
198 seat_get_can_switch (Seat *seat)
200 g_return_val_if_fail (seat != NULL, FALSE);
201 return seat->priv->can_switch;
205 seat_get_allow_guest (Seat *seat)
207 g_return_val_if_fail (seat != NULL, FALSE);
208 return seat_get_boolean_property (seat, "allow-guest") && guest_account_is_installed ();
212 seat_get_greeter_allow_guest (Seat *seat)
214 g_return_val_if_fail (seat != NULL, FALSE);
215 return seat_get_allow_guest (seat) && seat_get_boolean_property (seat, "greeter-allow-guest");
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 for (link = seat->priv->sessions; link; link = link->next)
325 Session *session = link->data;
327 if (session_get_display_server (session) != display_server)
330 /* Stop seat if this is the only display server and it failed to start a greeter */
331 if (IS_GREETER (session) &&
332 !session_get_is_started (session) &&
333 g_list_length (seat->priv->display_servers) == 0)
335 g_debug ("Stopping seat, greeter display server failed to start");
339 g_debug ("Stopping session");
340 session_stop (session);
343 /* If we were the active session, switch to a greeter */
344 active_session = seat_get_active_session (seat);
345 if (!active_session || session_get_display_server (active_session) == display_server)
347 g_debug ("Active display server stopped, starting greeter");
348 seat_switch_to_greeter (seat);
351 g_object_unref (display_server);
355 start_session (Seat *seat, Session *session)
357 Greeter *greeter_session;
359 if (session_start (session))
362 if (IS_GREETER (session))
364 g_debug ("Failed to start greeter");
365 display_server_stop (session_get_display_server (session));
369 g_debug ("Failed to start session, starting greeter");
370 greeter_session = create_greeter_session (seat);
371 // FIXME: Only if can re-use
372 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
374 start_session (seat, SESSION (greeter_session));
378 run_session (Seat *seat, Session *session)
382 if (IS_GREETER (session))
383 script = seat_get_string_property (seat, "greeter-setup-script");
385 script = seat_get_string_property (seat, "session-setup-script");
386 if (script && !run_script (seat, session_get_display_server (session), script, NULL))
388 Greeter *greeter_session;
390 g_debug ("Switching to greeter due to failed setup script");
391 session_stop (session);
393 // FIXME: Only if can share servers
395 greeter_session = create_greeter_session (seat);
396 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
398 start_session (seat, SESSION (greeter_session));
402 session_run (session);
404 // FIXME: Wait until the session is ready
405 seat_set_active_session (seat, session);
410 session_authentication_complete_cb (Session *session, Seat *seat)
412 if (session_get_is_authenticated (session))
414 g_debug ("Session authenticated, running command");
415 run_session (seat, session);
417 else if (!IS_GREETER (session))
419 Greeter *greeter_session;
421 g_debug ("Switching to greeter due to failed authentication");
422 session_stop (session);
424 // FIXME: Only if can share servers
426 greeter_session = create_greeter_session (seat);
427 if (session_get_is_guest (session))
428 greeter_set_hint (greeter_session, "select-guest", "true");
430 greeter_set_hint (greeter_session, "select-user", session_get_username (session));
431 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
433 start_session (seat, SESSION (greeter_session));
437 g_debug ("Stopping session that failed authentication");
438 session_stop (session);
443 session_stopped_cb (Session *session, Seat *seat)
445 DisplayServer *display_server;
447 g_debug ("Session stopped");
449 display_server = session_get_display_server (session);
452 if (!IS_GREETER (session))
455 script = seat_get_string_property (seat, "session-cleanup-script");
457 run_script (seat, display_server, script, session_get_user (session));
460 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
461 seat->priv->sessions = g_list_remove (seat->priv->sessions, session);
463 if (seat->priv->stopping)
465 check_stopped (seat);
466 g_object_unref (session);
470 /* If this is the greeter session then re-use this display server */
471 if (IS_GREETER (session) && seat->priv->share_display_server &&
472 greeter_get_start_session (GREETER (session)))
476 for (link = seat->priv->sessions; link; link = link->next)
478 Session *s = link->data;
480 /* Skip this session and sessions on other display servers */
481 if (s == session || session_get_display_server (s) != display_server)
484 if (session_get_is_authenticated (s))
486 g_debug ("Greeter stopped, running session");
487 run_session (seat, s);
491 g_debug ("Greeter stopped, starting session authentication");
492 start_session (seat, s);
497 /* If this is the greeter and nothing else is running then stop the seat */
498 else if (IS_GREETER (session) &&
499 !greeter_get_start_session (GREETER (session)) &&
500 g_list_length (seat->priv->display_servers) == 1 &&
501 g_list_nth_data (seat->priv->display_servers, 0) == display_server)
503 g_debug ("Stopping seat, failed to start a greeter");
506 /* If we were the active session, switch to a greeter */
507 else if (!IS_GREETER (session) && session == seat_get_active_session (seat))
509 g_debug ("Active session stopped, starting greeter");
510 seat_switch_to_greeter (seat);
513 /* Stop the display server if no-longer required */
514 if (display_server && !display_server_get_is_stopped (display_server))
519 for (link = seat->priv->sessions; link; link = link->next)
521 Session *s = link->data;
524 if (session_get_display_server (s) == display_server)
529 g_debug ("Stopping display server, no sessions require it");
530 display_server_stop (display_server);
534 g_object_unref (session);
538 set_session_env (Session *session)
540 /* Variables required for regression tests */
541 if (g_getenv ("LIGHTDM_TEST_ROOT"))
543 session_set_env (session, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
544 session_set_env (session, "DBUS_SYSTEM_BUS_ADDRESS", g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
545 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
546 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
547 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
548 session_set_env (session, "GI_TYPELIB_PATH", g_getenv ("GI_TYPELIB_PATH"));
553 create_session (Seat *seat, gboolean autostart)
557 session = SEAT_GET_CLASS (seat)->create_session (seat);
558 seat->priv->sessions = g_list_append (seat->priv->sessions, session);
560 g_signal_connect (session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
561 g_signal_connect (session, "stopped", G_CALLBACK (session_stopped_cb), seat);
563 set_session_env (session);
569 get_session_argv_from_filename (const gchar *filename, const gchar *session_wrapper)
571 GKeyFile *session_desktop_file;
574 gchar *command = NULL, **argv, *path;
575 GError *error = NULL;
577 /* Read the command from the .desktop file */
578 session_desktop_file = g_key_file_new ();
579 result = g_key_file_load_from_file (session_desktop_file, filename, G_KEY_FILE_NONE, &error);
581 g_debug ("Failed to load session file %s: %s", filename, error->message);
582 g_clear_error (&error);
585 command = g_key_file_get_string (session_desktop_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_EXEC, NULL);
587 g_debug ("No command in session file %s", filename);
589 g_key_file_free (session_desktop_file);
594 /* If configured, run sessions through a wrapper */
597 argv = g_malloc (sizeof (gchar *) * 3);
598 path = g_find_program_in_path (session_wrapper);
599 argv[0] = path ? path : g_strdup (session_wrapper);
605 /* Split command into an array listing and make command absolute */
606 result = g_shell_parse_argv (command, &argc, &argv, &error);
608 g_debug ("Invalid session command '%s': %s", command, error->message);
609 g_clear_error (&error);
613 path = g_find_program_in_path (argv[0]);
624 get_session_argv (const gchar *sessions_dir, const gchar *session_name, const gchar *session_wrapper)
626 gchar **dirs, **argv;
629 g_return_val_if_fail (sessions_dir != NULL, NULL);
630 g_return_val_if_fail (session_name != NULL, NULL);
632 dirs = g_strsplit (sessions_dir, ":", -1);
633 for (i = 0; dirs[i]; i++)
635 gchar *filename, *path;
637 filename = g_strdup_printf ("%s.desktop", session_name);
638 path = g_build_filename (dirs[i], filename, NULL);
640 argv = get_session_argv_from_filename (path, session_wrapper);
651 create_user_session (Seat *seat, const gchar *username)
654 gchar *sessions_dir, **argv;
655 const gchar *session_name;
658 user = accounts_get_user_by_name (username);
661 g_debug ("Can't login unknown user '%s'", username);
665 session_name = user_get_xsession (user);
666 g_object_unref (user);
668 session_name = seat_get_string_property (seat, "user-session");
669 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
670 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
671 g_free (sessions_dir);
674 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
678 session = create_session (seat, TRUE);
679 session_set_pam_service (session, AUTOLOGIN_SERVICE);
680 session_set_username (session, username);
681 session_set_do_authenticate (session, TRUE);
682 session_set_argv (session, argv);
688 create_guest_session (Seat *seat)
690 gchar *sessions_dir, **argv;
693 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
694 argv = get_session_argv (sessions_dir,
695 seat_get_string_property (seat, "user-session"),
696 seat_get_string_property (seat, "session-wrapper"));
697 g_free (sessions_dir);
700 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
704 session = create_session (seat, TRUE);
705 session_set_do_authenticate (session, TRUE);
706 session_set_is_guest (session, TRUE);
707 session_set_argv (session, argv);
713 greeter_create_session_cb (Greeter *greeter, Seat *seat)
717 session = create_session (seat, FALSE);
718 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
720 return g_object_ref (session);
724 prepend_argv (gchar ***argv, const gchar *value)
726 gchar **old_argv, **new_argv;
730 new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
731 new_argv[0] = g_strdup (value);
732 for (i = 0; old_argv[i]; i++)
733 new_argv[i + 1] = old_argv[i];
734 new_argv[i + 1] = NULL;
741 greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Seat *seat)
745 gchar *sessions_dir = NULL;
748 /* Get the session to use */
749 if (greeter_get_guest_authenticated (greeter))
751 session = create_guest_session (seat);
752 session_set_pam_service (session, AUTOLOGIN_SERVICE);
755 session = greeter_get_authentication_session (greeter);
757 /* Get session command to run */
760 case SESSION_TYPE_LOCAL:
761 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
763 case SESSION_TYPE_REMOTE:
764 sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
768 session_name = user_get_xsession (session_get_user (session));
770 session_name = seat_get_string_property (seat, "user-session");
771 user_set_xsession (session_get_user (session), session_name);
772 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
773 g_free (sessions_dir);
777 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
781 session_set_argv (session, argv);
784 /* If no session information found, then can't start the session */
787 g_debug ("Can't find greeter session '%s'", session_name);
791 /* If can re-use the display server, stop the greeter first */
792 if (seat->priv->share_display_server)
794 /* Run on the same display server after the greeter has stopped */
795 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
797 g_debug ("Stopping greeter");
798 session_stop (SESSION (greeter));
802 /* Otherwise start a new display server for this session */
805 DisplayServer *display_server;
807 display_server = create_display_server (seat);
808 if (!display_server_start (display_server))
811 session_set_display_server (session, display_server);
818 create_greeter_session (Seat *seat)
820 gchar *sessions_dir, **argv;
821 Greeter *greeter_session;
823 const gchar *greeter_wrapper;
825 sessions_dir = config_get_string (config_get_instance (), "LightDM", "greeters-directory");
826 argv = get_session_argv (sessions_dir,
827 seat_get_string_property (seat, "greeter-session"),
828 seat_get_string_property (seat, "session-wrapper"));
829 g_free (sessions_dir);
833 greeter_wrapper = seat_get_string_property (seat, "greeter-wrapper");
837 path = g_find_program_in_path (greeter_wrapper);
838 prepend_argv (&argv, path ? path : greeter_wrapper);
842 greeter_session = SEAT_GET_CLASS (seat)->create_greeter_session (seat);
843 seat->priv->sessions = g_list_append (seat->priv->sessions, SESSION (greeter_session));
844 g_signal_connect (greeter_session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
845 g_signal_connect (greeter_session, "stopped", G_CALLBACK (session_stopped_cb), seat);
847 set_session_env (SESSION (greeter_session));
849 session_set_pam_service (SESSION (greeter_session), GREETER_SERVICE);
850 greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
851 session_set_username (SESSION (greeter_session), greeter_user);
852 g_free (greeter_user);
853 session_set_argv (SESSION (greeter_session), argv);
855 greeter_set_pam_services (greeter_session, USER_SERVICE, AUTOLOGIN_SERVICE);
856 greeter_set_allow_guest (greeter_session, seat_get_allow_guest (seat));
857 g_signal_connect (greeter_session, "create-session", G_CALLBACK (greeter_create_session_cb), seat);
858 g_signal_connect (greeter_session, "start-session", G_CALLBACK (greeter_start_session_cb), seat);
860 return greeter_session;
864 display_server_ready_cb (DisplayServer *display_server, Seat *seat)
868 gboolean used_display_server = FALSE;
870 /* Run setup script */
871 script = seat_get_string_property (seat, "display-setup-script");
872 if (script && !run_script (seat, display_server, script, NULL))
874 g_debug ("Stopping display server due to failed setup script");
875 display_server_stop (display_server);
879 emit_upstart_signal ("login-session-start");
881 /* Start the sessions waiting for this display server */
882 for (link = seat->priv->sessions; link; link = link->next)
884 Session *session = link->data;
886 if (session_get_display_server (session) != display_server)
889 if (session_get_is_authenticated (session))
891 g_debug ("Display server ready, running session");
892 run_session (seat, session);
896 g_debug ("Display server ready, starting session authentication");
897 start_session (seat, session);
899 used_display_server = TRUE;
902 if (!used_display_server)
904 g_debug ("Stopping not required display server");
905 display_server_stop (display_server);
909 static DisplayServer *
910 create_display_server (Seat *seat)
912 DisplayServer *display_server;
914 display_server = SEAT_GET_CLASS (seat)->create_display_server (seat);
915 seat->priv->display_servers = g_list_append (seat->priv->display_servers, display_server);
916 g_signal_connect (display_server, "ready", G_CALLBACK (display_server_ready_cb), seat);
917 g_signal_connect (display_server, "stopped", G_CALLBACK (display_server_stopped_cb), seat);
919 return display_server;
923 find_greeter_session (Seat *seat)
927 for (link = seat->priv->sessions; link; link = link->next)
929 Session *session = link->data;
930 if (IS_GREETER (session))
931 return GREETER (session);
938 seat_switch_to_greeter (Seat *seat)
940 Greeter *greeter_session;
941 DisplayServer *display_server;
943 g_return_val_if_fail (seat != NULL, FALSE);
945 if (!seat->priv->can_switch)
948 /* Switch to greeter if one open (shouldn't be though) */
949 greeter_session = find_greeter_session (seat);
952 seat_set_active_session (seat, SESSION (greeter_session));
956 greeter_session = create_greeter_session (seat);
958 display_server = create_display_server (seat);
959 session_set_display_server (SESSION (greeter_session), display_server);
960 if (!display_server_start (display_server))
967 find_user_session (Seat *seat, const gchar *username)
971 for (link = seat->priv->sessions; link; link = link->next)
973 Session *session = link->data;
975 if (strcmp (session_get_username (session), username) == 0)
983 seat_switch_to_user (Seat *seat, const gchar *username, const gchar *session_name)
986 DisplayServer *display_server;
988 g_return_val_if_fail (seat != NULL, FALSE);
989 g_return_val_if_fail (username != NULL, FALSE);
991 if (!seat->priv->can_switch)
994 g_debug ("Switching to user %s", username);
996 session = find_user_session (seat, username);
999 g_debug ("Switching to existing user session %s", username);
1000 seat_set_active_session (seat, session);
1004 session = create_user_session (seat, username);
1005 session_set_pam_service (session, USER_SERVICE);
1007 display_server = create_display_server (seat);
1008 session_set_display_server (session, display_server);
1009 if (!display_server_start (display_server))
1016 find_guest_session (Seat *seat)
1020 for (link = seat->priv->sessions; link; link = link->next)
1022 Session *session = link->data;
1024 if (session_get_is_guest (session))
1032 seat_switch_to_guest (Seat *seat, const gchar *session_name)
1035 DisplayServer *display_server;
1038 g_return_val_if_fail (seat != NULL, FALSE);
1040 if (!seat->priv->can_switch || !seat_get_allow_guest (seat))
1043 /* Switch to session if one open */
1044 session = find_guest_session (seat);
1047 g_debug ("Switching to existing guest account %s", session_get_username (session));
1048 seat_set_active_session (seat, session);
1052 display_server = create_display_server (seat);
1053 if (!display_server_start (display_server))
1056 session = create_guest_session (seat);
1057 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1058 session_set_display_server (session, display_server);
1064 seat_lock (Seat *seat, const gchar *username)
1066 Greeter *greeter_session;
1067 DisplayServer *display_server;
1069 g_return_val_if_fail (seat != NULL, FALSE);
1071 if (!seat->priv->can_switch)
1074 g_debug ("Locking seat");
1076 /* Switch to greeter if one open (shouldn't be though) */
1077 greeter_session = find_greeter_session (seat);
1078 if (greeter_session)
1080 seat_set_active_session (seat, SESSION (greeter_session));
1084 display_server = create_display_server (seat);
1085 if (!display_server_start (display_server))
1088 greeter_session = create_greeter_session (seat);
1089 greeter_set_hint (greeter_session, "lock-screen", "true");
1091 greeter_set_hint (greeter_session, "select-user", username);
1092 session_set_display_server (SESSION (greeter_session), display_server);
1098 seat_stop (Seat *seat)
1100 g_return_if_fail (seat != NULL);
1102 if (seat->priv->stopping)
1105 g_debug ("Stopping seat");
1106 seat->priv->stopping = TRUE;
1107 SEAT_GET_CLASS (seat)->stop (seat);
1111 seat_get_is_stopping (Seat *seat)
1113 g_return_val_if_fail (seat != NULL, FALSE);
1114 return seat->priv->stopping;
1118 seat_real_setup (Seat *seat)
1123 seat_real_start (Seat *seat)
1125 const gchar *autologin_username;
1126 int autologin_timeout;
1127 gboolean autologin_guest;
1128 gboolean autologin_in_background;
1129 const gchar *user_session;
1130 Session *session = NULL;
1131 DisplayServer *display_server;
1133 gchar *sessions_dir;
1134 const gchar *wrapper = NULL;
1135 const gchar *session_name = NULL;
1137 g_debug ("Starting seat");
1139 display_server = create_display_server (seat);
1141 /* Get autologin settings */
1142 autologin_username = seat_get_string_property (seat, "autologin-user");
1143 if (g_strcmp0 (autologin_username, "") == 0)
1144 autologin_username = NULL;
1145 autologin_timeout = seat_get_integer_property (seat, "autologin-user-timeout");
1146 autologin_guest = seat_get_boolean_property (seat, "autologin-guest");
1147 autologin_in_background = seat_get_boolean_property (seat, "autologin-in-background");
1149 /* Autologin if configured */
1150 if (autologin_timeout == 0 && autologin_guest)
1152 session = create_guest_session (seat);
1153 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1155 else if (autologin_timeout == 0 && autologin_username != NULL)
1157 session = create_user_session (seat, autologin_username);
1158 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1161 /* Fallback to a greeter */
1164 Greeter *greeter_session;
1166 greeter_session = create_greeter_session (seat);
1167 session = SESSION (greeter_session);
1169 if (autologin_timeout)
1173 value = g_strdup_printf ("%d", autologin_timeout);
1174 greeter_set_hint (greeter_session, "autologin-timeout", value);
1176 if (autologin_username)
1177 greeter_set_hint (greeter_session, "autologin-user", autologin_username);
1178 if (autologin_guest)
1179 greeter_set_hint (greeter_session, "autologin-guest", "true");
1183 /* Fail if can't start a session */
1190 /* Start display server to show session on */
1191 session_set_display_server (session, display_server);
1192 if (!display_server_start (display_server))
1199 seat_real_set_active_session (Seat *seat, Session *session)
1204 seat_real_get_active_session (Seat *seat)
1210 seat_real_stop (Seat *seat)
1214 check_stopped (seat);
1215 if (seat->priv->stopped)
1218 /* Stop all the display servers and sessions on the seat. Copy the list as
1219 * it might be modified if a display server / session stops during this loop */
1220 list = g_list_copy (seat->priv->display_servers);
1221 for (link = list; link; link = link->next)
1223 DisplayServer *display_server = link->data;
1224 g_debug ("Stopping display server");
1225 display_server_stop (display_server);
1228 list = g_list_copy (seat->priv->sessions);
1229 for (link = list; link; link = link->next)
1231 Session *session = link->data;
1232 g_debug ("Stopping session");
1233 if (session_get_is_stopped (session))
1234 session_stopped_cb (session, seat);
1236 session_stop (session);
1242 seat_init (Seat *seat)
1244 seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_TYPE, SeatPrivate);
1245 seat->priv->properties = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1246 seat->priv->share_display_server = TRUE;
1250 seat_finalize (GObject *object)
1255 self = SEAT (object);
1257 g_hash_table_unref (self->priv->properties);
1258 for (link = self->priv->display_servers; link; link = link->next)
1260 DisplayServer *display_server = link->data;
1261 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1263 g_list_free_full (self->priv->display_servers, g_object_unref);
1264 for (link = self->priv->sessions; link; link = link->next)
1266 Session *session = link->data;
1267 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1269 g_list_free_full (self->priv->sessions, g_object_unref);
1271 G_OBJECT_CLASS (seat_parent_class)->finalize (object);
1275 seat_class_init (SeatClass *klass)
1277 GObjectClass *object_class = G_OBJECT_CLASS (klass);
1279 klass->setup = seat_real_setup;
1280 klass->start = seat_real_start;
1281 klass->set_active_session = seat_real_set_active_session;
1282 klass->get_active_session = seat_real_get_active_session;
1283 klass->run_script = seat_real_run_script;
1284 klass->stop = seat_real_stop;
1286 object_class->finalize = seat_finalize;
1288 g_type_class_add_private (klass, sizeof (SeatPrivate));
1290 signals[SESSION_ADDED] =
1291 g_signal_new ("session-added",
1292 G_TYPE_FROM_CLASS (klass),
1294 G_STRUCT_OFFSET (SeatClass, session_added),
1296 g_cclosure_marshal_VOID__OBJECT,
1297 G_TYPE_NONE, 1, SESSION_TYPE);
1298 signals[SESSION_REMOVED] =
1299 g_signal_new ("session-removed",
1300 G_TYPE_FROM_CLASS (klass),
1302 G_STRUCT_OFFSET (SeatClass, session_removed),
1304 g_cclosure_marshal_VOID__OBJECT,
1305 G_TYPE_NONE, 1, SESSION_TYPE);
1307 g_signal_new ("stopped",
1308 G_TYPE_FROM_CLASS (klass),
1310 G_STRUCT_OFFSET (SeatClass, stopped),
1312 g_cclosure_marshal_VOID__VOID,