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"
28 static guint signals[LAST_SIGNAL] = { 0 };
32 /* Configuration for this seat */
33 GHashTable *properties;
35 /* TRUE if able to switch users */
38 /* TRUE if display server can be shared for sessions */
39 gboolean share_display_server;
41 /* The display servers on this seat */
42 GList *display_servers;
44 /* The sessions on this seat */
47 /* The session to set active when it starts */
48 Session *session_to_activate;
50 /* TRUE if stopping this seat (waiting for displays to stop) */
57 /* PAM services to use */
58 #define GREETER_SERVICE "lightdm-greeter"
59 #define USER_SERVICE "lightdm"
60 #define AUTOLOGIN_SERVICE "lightdm-autologin"
62 G_DEFINE_TYPE (Seat, seat, G_TYPE_OBJECT);
69 static GHashTable *seat_modules = NULL;
71 // FIXME: Make a get_display_server() that re-uses display servers if supported
72 static DisplayServer *create_display_server (Seat *seat);
73 static Greeter *create_greeter_session (Seat *seat);
74 static void start_session (Seat *seat, Session *session);
77 seat_register_module (const gchar *name, GType type)
82 seat_modules = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
84 g_debug ("Registered seat module %s", name);
86 module = g_malloc0 (sizeof (SeatModule));
87 module->name = g_strdup (name);
89 g_hash_table_insert (seat_modules, g_strdup (name), module);
93 seat_new (const gchar *module_name)
98 g_return_val_if_fail (module_name != NULL, NULL);
101 m = g_hash_table_lookup (seat_modules, module_name);
105 seat = g_object_new (m->type, NULL);
111 seat_set_property (Seat *seat, const gchar *name, const gchar *value)
113 g_return_if_fail (seat != NULL);
114 g_hash_table_insert (seat->priv->properties, g_strdup (name), g_strdup (value));
118 seat_get_string_property (Seat *seat, const gchar *name)
120 g_return_val_if_fail (seat != NULL, NULL);
121 return g_hash_table_lookup (seat->priv->properties, name);
125 seat_get_boolean_property (Seat *seat, const gchar *name)
127 return g_strcmp0 (seat_get_string_property (seat, name), "true") == 0;
131 seat_get_integer_property (Seat *seat, const gchar *name)
135 value = seat_get_string_property (seat, name);
136 return value ? atoi (value) : 0;
140 seat_set_can_switch (Seat *seat, gboolean can_switch)
142 g_return_if_fail (seat != NULL);
144 seat->priv->can_switch = can_switch;
148 seat_set_share_display_server (Seat *seat, gboolean share_display_server)
150 g_return_if_fail (seat != NULL);
152 seat->priv->share_display_server = share_display_server;
156 seat_start (Seat *seat)
158 g_return_val_if_fail (seat != NULL, FALSE);
160 SEAT_GET_CLASS (seat)->setup (seat);
161 return SEAT_GET_CLASS (seat)->start (seat);
165 seat_get_sessions (Seat *seat)
167 g_return_val_if_fail (seat != NULL, NULL);
168 return seat->priv->sessions;
172 seat_set_active_session (Seat *seat, Session *session)
176 g_return_if_fail (seat != NULL);
178 SEAT_GET_CLASS (seat)->set_active_session (seat, session);
180 /* Stop any greeters */
181 for (link = seat->priv->sessions; link; link = link->next)
183 Session *s = link->data;
185 if (s == session || session_get_is_stopping (s))
190 g_debug ("Stopping greeter");
197 seat_get_active_session (Seat *seat)
199 g_return_val_if_fail (seat != NULL, NULL);
200 return SEAT_GET_CLASS (seat)->get_active_session (seat);
204 seat_get_can_switch (Seat *seat)
206 g_return_val_if_fail (seat != NULL, FALSE);
207 return seat->priv->can_switch;
211 seat_get_allow_guest (Seat *seat)
213 g_return_val_if_fail (seat != NULL, FALSE);
214 return seat_get_boolean_property (seat, "allow-guest") && guest_account_is_installed ();
218 seat_get_greeter_allow_guest (Seat *seat)
220 g_return_val_if_fail (seat != NULL, FALSE);
221 return seat_get_allow_guest (seat) && seat_get_boolean_property (seat, "greeter-allow-guest");
225 run_script (Seat *seat, DisplayServer *display_server, const gchar *script_name, User *user)
228 gboolean result = FALSE;
230 script = process_new ();
232 process_set_command (script, script_name);
234 /* Set POSIX variables */
235 process_set_clear_environment (script, TRUE);
236 process_set_env (script, "SHELL", "/bin/sh");
238 /* Variables required for regression tests */
239 if (g_getenv ("LIGHTDM_TEST_ROOT"))
241 process_set_env (script, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
242 process_set_env (script, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
243 process_set_env (script, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
244 process_set_env (script, "PATH", g_getenv ("PATH"));
247 process_set_env (script, "PATH", "/usr/local/bin:/usr/bin:/bin");
251 process_set_env (script, "USER", user_get_name (user));
252 process_set_env (script, "LOGNAME", user_get_name (user));
253 process_set_env (script, "HOME", user_get_home_directory (user));
256 process_set_env (script, "HOME", "/");
258 SEAT_GET_CLASS (seat)->run_script (seat, display_server, script);
260 if (process_start (script, TRUE))
264 exit_status = process_get_exit_status (script);
265 if (WIFEXITED (exit_status))
267 g_debug ("Exit status of %s: %d", script_name, WEXITSTATUS (exit_status));
268 result = WEXITSTATUS (exit_status) == EXIT_SUCCESS;
272 g_object_unref (script);
278 seat_real_run_script (Seat *seat, DisplayServer *display_server, Process *process)
283 emit_upstart_signal (const gchar *signal)
285 g_return_if_fail (signal != NULL);
286 g_return_if_fail (signal[0] != 0);
291 gchar *cmd = g_strdup_printf ("initctl -q emit %s DISPLAY_MANAGER=lightdm", signal);
292 g_spawn_command_line_async (cmd, NULL); /* OK if it fails, probably not installed */
297 check_stopped (Seat *seat)
299 if (seat->priv->stopping &&
300 !seat->priv->stopped &&
301 g_list_length (seat->priv->display_servers) == 0 &&
302 g_list_length (seat->priv->sessions) == 0)
304 seat->priv->stopped = TRUE;
305 g_debug ("Seat stopped");
306 g_signal_emit (seat, signals[STOPPED], 0);
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)
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;
371 DisplayServer *display_server;
373 greeter_session = create_greeter_session (seat);
374 if (session_get_is_guest (session))
375 greeter_set_hint (greeter_session, "select-guest", "true");
377 greeter_set_hint (greeter_session, "select-user", session_get_username (session));
378 if (seat->priv->session_to_activate)
379 g_object_unref (seat->priv->session_to_activate);
380 seat->priv->session_to_activate = g_object_ref (greeter_session);
382 if (seat->priv->share_display_server)
383 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
386 DisplayServer *display_server;
388 display_server = create_display_server (seat);
389 if (!display_server_start (display_server))
391 g_debug ("Failed to start display server for greeter");
395 session_set_display_server (session, display_server);
398 start_session (seat, SESSION (greeter_session));
400 /* Stop failed session */
401 session_stop (session);
405 start_session (Seat *seat, Session *session)
407 Greeter *greeter_session;
409 if (session_start (session))
412 if (IS_GREETER (session))
414 g_debug ("Failed to start greeter");
415 display_server_stop (session_get_display_server (session));
419 g_debug ("Failed to start session, starting greeter");
420 switch_to_greeter_from_failed_session (seat, session);
424 run_session (Seat *seat, Session *session)
428 if (IS_GREETER (session))
429 script = seat_get_string_property (seat, "greeter-setup-script");
431 script = seat_get_string_property (seat, "session-setup-script");
432 if (script && !run_script (seat, session_get_display_server (session), script, NULL))
434 g_debug ("Switching to greeter due to failed setup script");
435 switch_to_greeter_from_failed_session (seat, session);
439 g_signal_emit (seat, signals[RUNNING_SESSION], 0, session);
441 session_run (session);
443 // FIXME: Wait until the session is ready
445 if (session == seat->priv->session_to_activate)
447 seat_set_active_session (seat, session);
448 g_object_unref (seat->priv->session_to_activate);
449 seat->priv->session_to_activate = NULL;
454 session_authentication_complete_cb (Session *session, Seat *seat)
456 if (session_get_is_authenticated (session))
458 g_debug ("Session authenticated, running command");
459 run_session (seat, session);
461 else if (!IS_GREETER (session))
463 g_debug ("Switching to greeter due to failed authentication");
464 switch_to_greeter_from_failed_session (seat, session);
468 g_debug ("Stopping session that failed authentication");
469 session_stop (session);
474 session_stopped_cb (Session *session, Seat *seat)
476 DisplayServer *display_server;
478 g_debug ("Session stopped");
480 display_server = session_get_display_server (session);
483 if (!IS_GREETER (session))
486 script = seat_get_string_property (seat, "session-cleanup-script");
488 run_script (seat, display_server, script, session_get_user (session));
491 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
492 seat->priv->sessions = g_list_remove (seat->priv->sessions, session);
494 /* We were waiting for this session, but it didn't start :( */
495 // FIXME: Start a greeter on this?
496 if (session == seat->priv->session_to_activate)
498 g_object_unref (seat->priv->session_to_activate);
499 seat->priv->session_to_activate = NULL;
502 if (seat->priv->stopping)
504 check_stopped (seat);
505 g_object_unref (session);
509 /* If this is the greeter session then re-use this display server */
510 if (IS_GREETER (session) && seat->priv->share_display_server &&
511 greeter_get_start_session (GREETER (session)))
515 for (link = seat->priv->sessions; link; link = link->next)
517 Session *s = link->data;
519 /* Skip this session and sessions on other display servers */
520 if (s == session || session_get_display_server (s) != display_server || session_get_is_stopping (s))
523 if (session_get_is_authenticated (s))
525 g_debug ("Greeter stopped, running session");
526 run_session (seat, s);
530 g_debug ("Greeter stopped, starting session authentication");
531 start_session (seat, s);
536 /* If this is the greeter and nothing else is running then stop the seat */
537 else if (IS_GREETER (session) &&
538 !greeter_get_start_session (GREETER (session)) &&
539 g_list_length (seat->priv->display_servers) == 1 &&
540 g_list_nth_data (seat->priv->display_servers, 0) == display_server)
542 g_debug ("Stopping seat, failed to start a greeter");
545 /* If we were the active session, switch to a greeter */
546 else if (!IS_GREETER (session) && session == seat_get_active_session (seat))
548 g_debug ("Active session stopped, starting greeter");
549 seat_switch_to_greeter (seat);
552 /* Stop the display server if no-longer required */
553 if (display_server && !display_server_get_is_stopping (display_server))
558 for (link = seat->priv->sessions; link; link = link->next)
560 Session *s = link->data;
563 if (session_get_display_server (s) == display_server)
568 g_debug ("Stopping display server, no sessions require it");
569 display_server_stop (display_server);
573 g_signal_emit (seat, signals[SESSION_REMOVED], 0, session);
574 g_object_unref (session);
578 set_session_env (Session *session)
580 /* Variables required for regression tests */
581 if (g_getenv ("LIGHTDM_TEST_ROOT"))
583 session_set_env (session, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
584 session_set_env (session, "DBUS_SYSTEM_BUS_ADDRESS", g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
585 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
586 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
587 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
588 session_set_env (session, "GI_TYPELIB_PATH", g_getenv ("GI_TYPELIB_PATH"));
593 create_session (Seat *seat, gboolean autostart)
597 session = SEAT_GET_CLASS (seat)->create_session (seat);
598 seat->priv->sessions = g_list_append (seat->priv->sessions, session);
600 g_signal_connect (session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
601 g_signal_connect (session, "stopped", G_CALLBACK (session_stopped_cb), seat);
603 set_session_env (session);
605 g_signal_emit (seat, signals[SESSION_ADDED], 0, session);
611 get_session_argv_from_filename (const gchar *filename, const gchar *session_wrapper)
613 GKeyFile *session_desktop_file;
616 gchar *command = NULL, **argv, *path;
617 GError *error = NULL;
619 /* Read the command from the .desktop file */
620 session_desktop_file = g_key_file_new ();
621 result = g_key_file_load_from_file (session_desktop_file, filename, G_KEY_FILE_NONE, &error);
623 g_debug ("Failed to load session file %s: %s", filename, error->message);
624 g_clear_error (&error);
627 command = g_key_file_get_string (session_desktop_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_EXEC, NULL);
629 g_debug ("No command in session file %s", filename);
631 g_key_file_free (session_desktop_file);
636 /* If configured, run sessions through a wrapper */
639 argv = g_malloc (sizeof (gchar *) * 3);
640 path = g_find_program_in_path (session_wrapper);
641 argv[0] = path ? path : g_strdup (session_wrapper);
647 /* Split command into an array listing and make command absolute */
648 result = g_shell_parse_argv (command, &argc, &argv, &error);
650 g_debug ("Invalid session command '%s': %s", command, error->message);
651 g_clear_error (&error);
655 path = g_find_program_in_path (argv[0]);
666 get_session_argv (const gchar *sessions_dir, const gchar *session_name, const gchar *session_wrapper)
668 gchar **dirs, **argv;
671 g_return_val_if_fail (sessions_dir != NULL, NULL);
672 g_return_val_if_fail (session_name != NULL, NULL);
674 dirs = g_strsplit (sessions_dir, ":", -1);
675 for (i = 0; dirs[i]; i++)
677 gchar *filename, *path;
679 filename = g_strdup_printf ("%s.desktop", session_name);
680 path = g_build_filename (dirs[i], filename, NULL);
682 argv = get_session_argv_from_filename (path, session_wrapper);
693 create_user_session (Seat *seat, const gchar *username)
696 gchar *sessions_dir, **argv;
697 const gchar *session_name;
700 user = accounts_get_user_by_name (username);
703 g_debug ("Can't login unknown user '%s'", username);
707 session_name = user_get_xsession (user);
708 g_object_unref (user);
710 session_name = seat_get_string_property (seat, "user-session");
711 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
712 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
713 g_free (sessions_dir);
716 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
720 session = create_session (seat, TRUE);
721 session_set_pam_service (session, AUTOLOGIN_SERVICE);
722 session_set_username (session, username);
723 session_set_do_authenticate (session, TRUE);
724 session_set_argv (session, argv);
730 create_guest_session (Seat *seat)
732 gchar *sessions_dir, **argv;
735 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
736 argv = get_session_argv (sessions_dir,
737 seat_get_string_property (seat, "user-session"),
738 seat_get_string_property (seat, "session-wrapper"));
739 g_free (sessions_dir);
742 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
746 session = create_session (seat, TRUE);
747 session_set_do_authenticate (session, TRUE);
748 session_set_is_guest (session, TRUE);
749 session_set_argv (session, argv);
755 greeter_create_session_cb (Greeter *greeter, Seat *seat)
759 session = create_session (seat, FALSE);
760 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
762 return g_object_ref (session);
766 prepend_argv (gchar ***argv, const gchar *value)
768 gchar **old_argv, **new_argv;
772 new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
773 new_argv[0] = g_strdup (value);
774 for (i = 0; old_argv[i]; i++)
775 new_argv[i + 1] = old_argv[i];
776 new_argv[i + 1] = NULL;
783 find_user_session (Seat *seat, const gchar *username)
790 for (link = seat->priv->sessions; link; link = link->next)
792 Session *session = link->data;
794 if (!session_get_is_stopping (session) && strcmp (session_get_username (session), username) == 0)
802 greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Seat *seat)
804 Session *session, *existing_session;
805 const gchar *username;
807 gchar *sessions_dir = NULL;
810 /* Get the session to use */
811 if (greeter_get_guest_authenticated (greeter))
813 session = create_guest_session (seat);
814 session_set_pam_service (session, AUTOLOGIN_SERVICE);
817 session = greeter_get_authentication_session (greeter);
819 /* Switch to this session when it is ready */
820 if (seat->priv->session_to_activate)
821 g_object_unref (seat->priv->session_to_activate);
822 seat->priv->session_to_activate = g_object_ref (session);
824 /* Return to existing session if it is open */
825 username = session_get_username (session);
826 existing_session = find_user_session (seat, username);
827 if (existing_session && session != existing_session)
829 g_debug ("Returning to existing user session %s", username);
830 session_stop (session);
831 seat_set_active_session (seat, existing_session);
835 /* Get session command to run */
838 case SESSION_TYPE_LOCAL:
839 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
841 case SESSION_TYPE_REMOTE:
842 sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
845 user = session_get_user (session);
846 if (!session_name && user)
847 session_name = user_get_xsession (user);
849 session_name = seat_get_string_property (seat, "user-session");
851 user_set_xsession (session_get_user (session), session_name);
852 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
853 g_free (sessions_dir);
857 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
861 session_set_argv (session, argv);
864 /* If no session information found, then can't start the session */
867 g_debug ("Can't find greeter session '%s'", session_name);
871 /* If can re-use the display server, stop the greeter first */
872 if (seat->priv->share_display_server)
874 /* Run on the same display server after the greeter has stopped */
875 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
877 g_debug ("Stopping greeter");
878 session_stop (SESSION (greeter));
882 /* Otherwise start a new display server for this session */
885 DisplayServer *display_server;
887 display_server = create_display_server (seat);
888 if (!display_server_start (display_server))
891 session_set_display_server (session, display_server);
898 create_greeter_session (Seat *seat)
900 gchar *sessions_dir, **argv;
901 Greeter *greeter_session;
903 const gchar *greeter_wrapper;
905 sessions_dir = config_get_string (config_get_instance (), "LightDM", "greeters-directory");
906 argv = get_session_argv (sessions_dir,
907 seat_get_string_property (seat, "greeter-session"),
908 seat_get_string_property (seat, "session-wrapper"));
909 g_free (sessions_dir);
913 greeter_wrapper = seat_get_string_property (seat, "greeter-wrapper");
917 path = g_find_program_in_path (greeter_wrapper);
918 prepend_argv (&argv, path ? path : greeter_wrapper);
922 greeter_session = SEAT_GET_CLASS (seat)->create_greeter_session (seat);
923 seat->priv->sessions = g_list_append (seat->priv->sessions, SESSION (greeter_session));
924 g_signal_connect (greeter_session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
925 g_signal_connect (greeter_session, "stopped", G_CALLBACK (session_stopped_cb), seat);
927 set_session_env (SESSION (greeter_session));
929 session_set_pam_service (SESSION (greeter_session), GREETER_SERVICE);
930 greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
931 session_set_username (SESSION (greeter_session), greeter_user);
932 g_free (greeter_user);
933 session_set_argv (SESSION (greeter_session), argv);
935 greeter_set_pam_services (greeter_session, USER_SERVICE, AUTOLOGIN_SERVICE);
936 greeter_set_allow_guest (greeter_session, seat_get_allow_guest (seat));
937 g_signal_connect (greeter_session, "create-session", G_CALLBACK (greeter_create_session_cb), seat);
938 g_signal_connect (greeter_session, "start-session", G_CALLBACK (greeter_start_session_cb), seat);
940 return greeter_session;
944 find_session_for_display_server (Seat *seat, DisplayServer *display_server)
948 for (link = seat->priv->sessions; link; link = link->next)
950 Session *session = link->data;
951 if (session_get_display_server (session) == display_server && !session_get_is_stopping (session))
959 display_server_ready_cb (DisplayServer *display_server, Seat *seat)
964 /* Run setup script */
965 script = seat_get_string_property (seat, "display-setup-script");
966 if (script && !run_script (seat, display_server, script, NULL))
968 g_debug ("Stopping display server due to failed setup script");
969 display_server_stop (display_server);
973 emit_upstart_signal ("login-session-start");
975 /* Start the session waiting for this display server */
976 session = find_session_for_display_server (seat, display_server);
979 if (session_get_is_authenticated (session))
981 g_debug ("Display server ready, running session");
982 run_session (seat, session);
986 g_debug ("Display server ready, starting session authentication");
987 start_session (seat, session);
992 g_debug ("Stopping not required display server");
993 display_server_stop (display_server);
997 static DisplayServer *
998 create_display_server (Seat *seat)
1000 DisplayServer *display_server;
1002 display_server = SEAT_GET_CLASS (seat)->create_display_server (seat);
1003 seat->priv->display_servers = g_list_append (seat->priv->display_servers, display_server);
1004 g_signal_connect (display_server, "ready", G_CALLBACK (display_server_ready_cb), seat);
1005 g_signal_connect (display_server, "stopped", G_CALLBACK (display_server_stopped_cb), seat);
1007 return display_server;
1011 find_greeter_session (Seat *seat)
1015 for (link = seat->priv->sessions; link; link = link->next)
1017 Session *session = link->data;
1018 if (!session_get_is_stopping (session) && IS_GREETER (session))
1019 return GREETER (session);
1026 seat_switch_to_greeter (Seat *seat)
1028 Greeter *greeter_session;
1029 DisplayServer *display_server;
1031 g_return_val_if_fail (seat != NULL, FALSE);
1033 if (!seat->priv->can_switch)
1036 /* Switch to greeter if one open (shouldn't be though) */
1037 greeter_session = find_greeter_session (seat);
1038 if (greeter_session)
1040 g_debug ("Switching to existing greeter");
1041 seat_set_active_session (seat, SESSION (greeter_session));
1045 greeter_session = create_greeter_session (seat);
1046 if (seat->priv->session_to_activate)
1047 g_object_unref (seat->priv->session_to_activate);
1048 seat->priv->session_to_activate = g_object_ref (greeter_session);
1050 display_server = create_display_server (seat);
1051 session_set_display_server (SESSION (greeter_session), display_server);
1052 if (!display_server_start (display_server))
1059 seat_switch_to_user (Seat *seat, const gchar *username, const gchar *session_name)
1062 DisplayServer *display_server;
1064 g_return_val_if_fail (seat != NULL, FALSE);
1065 g_return_val_if_fail (username != NULL, FALSE);
1067 if (!seat->priv->can_switch)
1070 g_debug ("Switching to user %s", username);
1072 session = find_user_session (seat, username);
1075 g_debug ("Switching to existing user session %s", username);
1076 seat_set_active_session (seat, session);
1080 session = create_user_session (seat, username);
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 (session);
1084 session_set_pam_service (session, USER_SERVICE);
1086 display_server = create_display_server (seat);
1087 session_set_display_server (session, display_server);
1088 if (!display_server_start (display_server))
1095 find_guest_session (Seat *seat)
1099 for (link = seat->priv->sessions; link; link = link->next)
1101 Session *session = link->data;
1102 if (!session_get_is_stopping (session) && session_get_is_guest (session))
1110 seat_switch_to_guest (Seat *seat, const gchar *session_name)
1113 DisplayServer *display_server;
1116 g_return_val_if_fail (seat != NULL, FALSE);
1118 if (!seat->priv->can_switch || !seat_get_allow_guest (seat))
1121 /* Switch to session if one open */
1122 session = find_guest_session (seat);
1125 g_debug ("Switching to existing guest account %s", session_get_username (session));
1126 seat_set_active_session (seat, session);
1130 display_server = create_display_server (seat);
1131 if (!display_server_start (display_server))
1134 session = create_guest_session (seat);
1135 if (seat->priv->session_to_activate)
1136 g_object_unref (seat->priv->session_to_activate);
1137 seat->priv->session_to_activate = g_object_ref (session);
1138 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1139 session_set_display_server (session, display_server);
1145 seat_lock (Seat *seat, const gchar *username)
1147 Greeter *greeter_session;
1148 DisplayServer *display_server;
1150 g_return_val_if_fail (seat != NULL, FALSE);
1152 if (!seat->priv->can_switch)
1155 g_debug ("Locking seat");
1157 /* Switch to greeter if one open (shouldn't be though) */
1158 greeter_session = find_greeter_session (seat);
1159 if (greeter_session)
1161 g_debug ("Switching to existing greeter");
1162 seat_set_active_session (seat, SESSION (greeter_session));
1166 display_server = create_display_server (seat);
1167 if (!display_server_start (display_server))
1170 greeter_session = create_greeter_session (seat);
1171 if (seat->priv->session_to_activate)
1172 g_object_unref (seat->priv->session_to_activate);
1173 seat->priv->session_to_activate = g_object_ref (greeter_session);
1174 greeter_set_hint (greeter_session, "lock-screen", "true");
1176 greeter_set_hint (greeter_session, "select-user", username);
1177 session_set_display_server (SESSION (greeter_session), display_server);
1183 seat_stop (Seat *seat)
1185 g_return_if_fail (seat != NULL);
1187 if (seat->priv->stopping)
1190 g_debug ("Stopping seat");
1191 seat->priv->stopping = TRUE;
1192 SEAT_GET_CLASS (seat)->stop (seat);
1196 seat_get_is_stopping (Seat *seat)
1198 g_return_val_if_fail (seat != NULL, FALSE);
1199 return seat->priv->stopping;
1203 seat_real_setup (Seat *seat)
1208 seat_real_start (Seat *seat)
1210 const gchar *autologin_username;
1211 int autologin_timeout;
1212 gboolean autologin_guest;
1213 gboolean autologin_in_background;
1214 const gchar *user_session;
1215 Session *session = NULL;
1216 DisplayServer *display_server;
1218 gchar *sessions_dir;
1219 const gchar *wrapper = NULL;
1220 const gchar *session_name = NULL;
1222 g_debug ("Starting seat");
1224 display_server = create_display_server (seat);
1226 /* Get autologin settings */
1227 autologin_username = seat_get_string_property (seat, "autologin-user");
1228 if (g_strcmp0 (autologin_username, "") == 0)
1229 autologin_username = NULL;
1230 autologin_timeout = seat_get_integer_property (seat, "autologin-user-timeout");
1231 autologin_guest = seat_get_boolean_property (seat, "autologin-guest");
1232 autologin_in_background = seat_get_boolean_property (seat, "autologin-in-background");
1234 /* Autologin if configured */
1235 if (autologin_timeout == 0 || autologin_in_background)
1237 if (autologin_guest)
1239 session = create_guest_session (seat);
1240 if (seat->priv->session_to_activate)
1241 g_object_unref (seat->priv->session_to_activate);
1242 seat->priv->session_to_activate = g_object_ref (session);
1243 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1245 else if (autologin_username != NULL)
1247 session = create_user_session (seat, autologin_username);
1248 if (seat->priv->session_to_activate)
1249 g_object_unref (seat->priv->session_to_activate);
1250 seat->priv->session_to_activate = g_object_ref (session);
1251 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1254 /* Load in background if required */
1255 if (autologin_in_background && session)
1257 DisplayServer *background_display_server;
1259 background_display_server = create_display_server (seat);
1260 session_set_display_server (session, background_display_server);
1261 if (!display_server_start (background_display_server))
1264 /* Start a greeter as well */
1269 /* Fallback to a greeter */
1272 Greeter *greeter_session;
1274 greeter_session = create_greeter_session (seat);
1275 if (seat->priv->session_to_activate)
1276 g_object_unref (seat->priv->session_to_activate);
1277 seat->priv->session_to_activate = g_object_ref (greeter_session);
1278 session = SESSION (greeter_session);
1280 if (autologin_timeout)
1284 value = g_strdup_printf ("%d", autologin_timeout);
1285 greeter_set_hint (greeter_session, "autologin-timeout", value);
1287 if (autologin_username)
1288 greeter_set_hint (greeter_session, "autologin-user", autologin_username);
1289 if (autologin_guest)
1290 greeter_set_hint (greeter_session, "autologin-guest", "true");
1294 /* Fail if can't start a session */
1301 /* Start display server to show session on */
1302 session_set_display_server (session, display_server);
1303 if (!display_server_start (display_server))
1310 seat_real_set_active_session (Seat *seat, Session *session)
1315 seat_real_get_active_session (Seat *seat)
1321 seat_real_stop (Seat *seat)
1325 check_stopped (seat);
1326 if (seat->priv->stopped)
1329 /* Stop all the display servers and sessions on the seat. Copy the list as
1330 * it might be modified if a display server / session stops during this loop */
1331 list = g_list_copy (seat->priv->display_servers);
1332 for (link = list; link; link = link->next)
1333 g_object_ref (link->data);
1334 for (link = list; link; link = link->next)
1336 DisplayServer *display_server = link->data;
1337 if (!display_server_get_is_stopping (display_server))
1339 g_debug ("Stopping display server");
1340 display_server_stop (display_server);
1343 g_list_free_full (list, g_object_unref);
1344 list = g_list_copy (seat->priv->sessions);
1345 for (link = list; link; link = link->next)
1346 g_object_ref (link->data);
1347 for (link = list; link; link = link->next)
1349 Session *session = link->data;
1350 if (!session_get_is_stopping (session))
1352 g_debug ("Stopping session");
1353 session_stop (session);
1356 g_list_free_full (list, g_object_unref);
1360 seat_init (Seat *seat)
1362 seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_TYPE, SeatPrivate);
1363 seat->priv->properties = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1364 seat->priv->share_display_server = TRUE;
1368 seat_finalize (GObject *object)
1373 self = SEAT (object);
1375 g_hash_table_unref (self->priv->properties);
1376 for (link = self->priv->display_servers; link; link = link->next)
1378 DisplayServer *display_server = link->data;
1379 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1381 g_list_free_full (self->priv->display_servers, g_object_unref);
1382 for (link = self->priv->sessions; link; link = link->next)
1384 Session *session = link->data;
1385 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1387 g_list_free_full (self->priv->sessions, g_object_unref);
1388 if (self->priv->session_to_activate)
1389 g_object_unref (self->priv->session_to_activate);
1391 G_OBJECT_CLASS (seat_parent_class)->finalize (object);
1395 seat_class_init (SeatClass *klass)
1397 GObjectClass *object_class = G_OBJECT_CLASS (klass);
1399 klass->setup = seat_real_setup;
1400 klass->start = seat_real_start;
1401 klass->set_active_session = seat_real_set_active_session;
1402 klass->get_active_session = seat_real_get_active_session;
1403 klass->run_script = seat_real_run_script;
1404 klass->stop = seat_real_stop;
1406 object_class->finalize = seat_finalize;
1408 g_type_class_add_private (klass, sizeof (SeatPrivate));
1410 signals[SESSION_ADDED] =
1411 g_signal_new ("session-added",
1412 G_TYPE_FROM_CLASS (klass),
1414 G_STRUCT_OFFSET (SeatClass, session_added),
1416 g_cclosure_marshal_VOID__OBJECT,
1417 G_TYPE_NONE, 1, SESSION_TYPE);
1418 signals[RUNNING_SESSION] =
1419 g_signal_new ("running-session",
1420 G_TYPE_FROM_CLASS (klass),
1422 G_STRUCT_OFFSET (SeatClass, running_session),
1424 g_cclosure_marshal_VOID__OBJECT,
1425 G_TYPE_NONE, 1, SESSION_TYPE);
1426 signals[SESSION_REMOVED] =
1427 g_signal_new ("session-removed",
1428 G_TYPE_FROM_CLASS (klass),
1430 G_STRUCT_OFFSET (SeatClass, session_removed),
1432 g_cclosure_marshal_VOID__OBJECT,
1433 G_TYPE_NONE, 1, SESSION_TYPE);
1435 g_signal_new ("stopped",
1436 G_TYPE_FROM_CLASS (klass),
1438 G_STRUCT_OFFSET (SeatClass, stopped),
1440 g_cclosure_marshal_VOID__VOID,