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 run_script (Seat *seat, DisplayServer *display_server, const gchar *script_name, User *user)
221 gboolean result = FALSE;
223 script = process_new ();
225 process_set_command (script, script_name);
227 /* Set POSIX variables */
228 process_set_clear_environment (script, TRUE);
229 process_set_env (script, "SHELL", "/bin/sh");
231 /* Variables required for regression tests */
232 if (g_getenv ("LIGHTDM_TEST_ROOT"))
234 process_set_env (script, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
235 process_set_env (script, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
236 process_set_env (script, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
237 process_set_env (script, "PATH", g_getenv ("PATH"));
240 process_set_env (script, "PATH", "/usr/local/bin:/usr/bin:/bin");
244 process_set_env (script, "USER", user_get_name (user));
245 process_set_env (script, "LOGNAME", user_get_name (user));
246 process_set_env (script, "HOME", user_get_home_directory (user));
249 process_set_env (script, "HOME", "/");
251 SEAT_GET_CLASS (seat)->run_script (seat, display_server, script);
253 if (process_start (script, TRUE))
257 exit_status = process_get_exit_status (script);
258 if (WIFEXITED (exit_status))
260 g_debug ("Exit status of %s: %d", script_name, WEXITSTATUS (exit_status));
261 result = WEXITSTATUS (exit_status) == EXIT_SUCCESS;
265 g_object_unref (script);
271 seat_real_run_script (Seat *seat, DisplayServer *display_server, Process *process)
276 emit_upstart_signal (const gchar *signal)
278 g_return_if_fail (signal != NULL);
279 g_return_if_fail (signal[0] != 0);
284 gchar *cmd = g_strdup_printf ("initctl -q emit %s DISPLAY_MANAGER=lightdm", signal);
285 g_spawn_command_line_async (cmd, NULL); /* OK if it fails, probably not installed */
290 check_stopped (Seat *seat)
292 if (seat->priv->stopping &&
293 !seat->priv->stopped &&
294 g_list_length (seat->priv->display_servers) == 0 &&
295 g_list_length (seat->priv->sessions) == 0)
297 seat->priv->stopped = TRUE;
298 g_debug ("Seat stopped");
299 g_signal_emit (seat, signals[STOPPED], 0);
304 display_server_stopped_cb (DisplayServer *display_server, Seat *seat)
307 Session *active_session;
309 g_debug ("Display server stopped");
311 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
312 seat->priv->display_servers = g_list_remove (seat->priv->display_servers, display_server);
314 if (seat->priv->stopping)
316 check_stopped (seat);
317 g_object_unref (display_server);
321 /* Stop all sessions on this display server */
322 list = g_list_copy (seat->priv->sessions);
323 for (link = list; link; link = link->next)
324 g_object_ref (link->data);
325 for (link = list; link; link = link->next)
327 Session *session = link->data;
329 if (session_get_display_server (session) != display_server || session_get_is_stopping (session))
332 /* Stop seat if this is the only display server and it failed to start a greeter */
333 if (IS_GREETER (session) &&
334 !session_get_is_started (session) &&
335 g_list_length (seat->priv->display_servers) == 0)
337 g_debug ("Stopping seat, greeter display server failed to start");
341 g_debug ("Stopping session");
342 session_stop (session);
344 g_list_free_full (list, g_object_unref);
346 if (!seat->priv->stopping && display_server_get_start_local_sessions (display_server))
348 /* If we were the active session, switch to a greeter */
349 active_session = seat_get_active_session (seat);
350 if (!active_session || session_get_display_server (active_session) == display_server)
352 g_debug ("Active display server stopped, starting greeter");
353 seat_switch_to_greeter (seat);
357 g_object_unref (display_server);
361 switch_to_greeter_from_failed_session (Seat *seat, Session *session)
363 Greeter *greeter_session;
365 greeter_session = create_greeter_session (seat);
366 if (session_get_is_guest (session))
367 greeter_set_hint (greeter_session, "select-guest", "true");
369 greeter_set_hint (greeter_session, "select-user", session_get_username (session));
370 if (seat->priv->session_to_activate)
371 g_object_unref (seat->priv->session_to_activate);
372 seat->priv->session_to_activate = g_object_ref (greeter_session);
374 if (seat->priv->share_display_server)
375 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
378 DisplayServer *display_server;
380 display_server = create_display_server (seat);
381 if (!display_server_start (display_server))
383 g_debug ("Failed to start display server for greeter");
387 session_set_display_server (session, display_server);
390 start_session (seat, SESSION (greeter_session));
392 /* Stop failed session */
393 session_stop (session);
397 start_session (Seat *seat, Session *session)
399 if (session_start (session))
402 if (IS_GREETER (session))
404 g_debug ("Failed to start greeter");
405 display_server_stop (session_get_display_server (session));
409 g_debug ("Failed to start session, starting greeter");
410 switch_to_greeter_from_failed_session (seat, session);
414 run_session (Seat *seat, Session *session)
418 if (IS_GREETER (session))
419 script = seat_get_string_property (seat, "greeter-setup-script");
421 script = seat_get_string_property (seat, "session-setup-script");
422 if (script && !run_script (seat, session_get_display_server (session), script, NULL))
424 g_debug ("Switching to greeter due to failed setup script");
425 switch_to_greeter_from_failed_session (seat, session);
429 if (!IS_GREETER (session))
430 g_signal_emit (seat, signals[RUNNING_USER_SESSION], 0, session);
432 session_run (session);
434 // FIXME: Wait until the session is ready
436 if (session == seat->priv->session_to_activate)
438 seat_set_active_session (seat, session);
439 g_object_unref (seat->priv->session_to_activate);
440 seat->priv->session_to_activate = NULL;
445 session_authentication_complete_cb (Session *session, Seat *seat)
447 if (session_get_is_authenticated (session))
449 g_debug ("Session authenticated, running command");
450 run_session (seat, session);
452 else if (!IS_GREETER (session))
454 g_debug ("Switching to greeter due to failed authentication");
455 switch_to_greeter_from_failed_session (seat, session);
459 g_debug ("Stopping session that failed authentication");
460 session_stop (session);
465 session_stopped_cb (Session *session, Seat *seat)
467 DisplayServer *display_server;
469 g_debug ("Session stopped");
471 display_server = session_get_display_server (session);
474 if (!IS_GREETER (session))
477 script = seat_get_string_property (seat, "session-cleanup-script");
479 run_script (seat, display_server, script, session_get_user (session));
482 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
483 seat->priv->sessions = g_list_remove (seat->priv->sessions, session);
485 /* We were waiting for this session, but it didn't start :( */
486 // FIXME: Start a greeter on this?
487 if (session == seat->priv->session_to_activate)
489 g_object_unref (seat->priv->session_to_activate);
490 seat->priv->session_to_activate = NULL;
493 if (seat->priv->stopping)
495 check_stopped (seat);
496 g_object_unref (session);
500 /* If this is the greeter session then re-use this display server */
501 if (IS_GREETER (session) && seat->priv->share_display_server &&
502 greeter_get_start_session (GREETER (session)))
506 for (link = seat->priv->sessions; link; link = link->next)
508 Session *s = link->data;
510 /* Skip this session and sessions on other display servers */
511 if (s == session || session_get_display_server (s) != display_server || session_get_is_stopping (s))
514 if (session_get_is_authenticated (s))
516 g_debug ("Greeter stopped, running session");
517 run_session (seat, s);
521 g_debug ("Greeter stopped, starting session authentication");
522 start_session (seat, s);
527 /* If this is the greeter and nothing else is running then stop the seat */
528 else if (IS_GREETER (session) &&
529 !greeter_get_start_session (GREETER (session)) &&
530 g_list_length (seat->priv->display_servers) == 1 &&
531 g_list_nth_data (seat->priv->display_servers, 0) == display_server)
533 g_debug ("Stopping seat, failed to start a greeter");
536 /* If we were the active session, switch to a greeter */
537 else if (!IS_GREETER (session) && session == seat_get_active_session (seat))
539 g_debug ("Active session stopped, starting greeter");
540 seat_switch_to_greeter (seat);
543 /* Stop the display server if no-longer required */
544 if (display_server && !display_server_get_is_stopping (display_server))
549 for (link = seat->priv->sessions; link; link = link->next)
551 Session *s = link->data;
554 if (session_get_display_server (s) == display_server)
559 g_debug ("Stopping display server, no sessions require it");
560 display_server_stop (display_server);
564 g_signal_emit (seat, signals[SESSION_REMOVED], 0, session);
565 g_object_unref (session);
569 set_session_env (Session *session)
571 /* Connect using the session bus */
574 if (g_getenv ("DBUS_SESSION_BUS_ADDRESS"))
575 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
576 session_set_env (session, "LDM_BUS", "SESSION");
577 if (g_getenv ("LD_PRELOAD"))
578 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
579 if (g_getenv ("LD_LIBRARY_PATH"))
580 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
581 if (g_getenv ("PATH"))
582 session_set_env (session, "PATH", g_getenv ("PATH"));
585 /* Variables required for regression tests */
586 if (g_getenv ("LIGHTDM_TEST_ROOT"))
588 session_set_env (session, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
589 session_set_env (session, "DBUS_SYSTEM_BUS_ADDRESS", g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
590 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
591 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
592 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
593 session_set_env (session, "GI_TYPELIB_PATH", g_getenv ("GI_TYPELIB_PATH"));
598 create_session (Seat *seat, gboolean autostart)
602 session = SEAT_GET_CLASS (seat)->create_session (seat);
603 seat->priv->sessions = g_list_append (seat->priv->sessions, session);
605 g_signal_connect (session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
606 g_signal_connect (session, "stopped", G_CALLBACK (session_stopped_cb), seat);
608 set_session_env (session);
610 g_signal_emit (seat, signals[SESSION_ADDED], 0, session);
616 get_session_argv_from_filename (const gchar *filename, const gchar *session_wrapper)
618 GKeyFile *session_desktop_file;
621 gchar *command = NULL, **argv, *path;
622 GError *error = NULL;
624 /* Read the command from the .desktop file */
625 session_desktop_file = g_key_file_new ();
626 result = g_key_file_load_from_file (session_desktop_file, filename, G_KEY_FILE_NONE, &error);
628 g_debug ("Failed to load session file %s: %s", filename, error->message);
629 g_clear_error (&error);
632 command = g_key_file_get_string (session_desktop_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_EXEC, NULL);
634 g_debug ("No command in session file %s", filename);
636 g_key_file_free (session_desktop_file);
641 /* If configured, run sessions through a wrapper */
644 argv = g_malloc (sizeof (gchar *) * 3);
645 path = g_find_program_in_path (session_wrapper);
646 argv[0] = path ? path : g_strdup (session_wrapper);
652 /* Split command into an array listing and make command absolute */
653 result = g_shell_parse_argv (command, &argc, &argv, &error);
655 g_debug ("Invalid session command '%s': %s", command, error->message);
656 g_clear_error (&error);
660 path = g_find_program_in_path (argv[0]);
671 get_session_argv (const gchar *sessions_dir, const gchar *session_name, const gchar *session_wrapper)
673 gchar **dirs, **argv = NULL;
676 g_return_val_if_fail (sessions_dir != NULL, NULL);
677 g_return_val_if_fail (session_name != NULL, NULL);
679 dirs = g_strsplit (sessions_dir, ":", -1);
680 for (i = 0; dirs[i]; i++)
682 gchar *filename, *path;
684 filename = g_strdup_printf ("%s.desktop", session_name);
685 path = g_build_filename (dirs[i], filename, NULL);
687 argv = get_session_argv_from_filename (path, session_wrapper);
698 create_user_session (Seat *seat, const gchar *username)
701 gchar *sessions_dir, **argv;
702 const gchar *session_name, *language;
703 Session *session = NULL;
705 /* Load user preferences */
706 user = accounts_get_user_by_name (username);
709 g_debug ("Can't login unknown user '%s'", username);
712 session_name = user_get_xsession (user);
713 language = user_get_language (user);
716 session_name = seat_get_string_property (seat, "user-session");
717 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
718 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
719 g_free (sessions_dir);
722 session = create_session (seat, TRUE);
723 session_set_env (session, "DESKTOP_SESSION", session_name);
724 session_set_env (session, "GDMSESSION", session_name);
725 if (language && language[0] != '\0')
727 session_set_env (session, "LANG", language);
728 session_set_env (session, "GDM_LANG", language);
730 session_set_pam_service (session, AUTOLOGIN_SERVICE);
731 session_set_username (session, username);
732 session_set_do_authenticate (session, TRUE);
733 session_set_argv (session, argv);
736 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
738 g_object_unref (user);
744 create_guest_session (Seat *seat)
746 gchar *sessions_dir, **argv;
749 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
750 argv = get_session_argv (sessions_dir,
751 seat_get_string_property (seat, "user-session"),
752 seat_get_string_property (seat, "session-wrapper"));
753 g_free (sessions_dir);
756 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
760 session = create_session (seat, TRUE);
761 session_set_do_authenticate (session, TRUE);
762 session_set_is_guest (session, TRUE);
763 session_set_argv (session, argv);
769 greeter_create_session_cb (Greeter *greeter, Seat *seat)
773 session = create_session (seat, FALSE);
774 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
776 return g_object_ref (session);
780 prepend_argv (gchar ***argv, const gchar *value)
782 gchar **old_argv, **new_argv;
786 new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
787 new_argv[0] = g_strdup (value);
788 for (i = 0; old_argv[i]; i++)
789 new_argv[i + 1] = old_argv[i];
790 new_argv[i + 1] = NULL;
797 find_user_session (Seat *seat, const gchar *username)
804 for (link = seat->priv->sessions; link; link = link->next)
806 Session *session = link->data;
808 if (!session_get_is_stopping (session) && strcmp (session_get_username (session), username) == 0)
816 greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Seat *seat)
818 Session *session, *existing_session;
819 const gchar *username, *language = NULL;
821 gchar *sessions_dir = NULL;
824 /* Get the session to use */
825 if (greeter_get_guest_authenticated (greeter))
827 session = create_guest_session (seat);
830 session_set_pam_service (session, AUTOLOGIN_SERVICE);
833 session = greeter_get_authentication_session (greeter);
835 /* Switch to this session when it is ready */
836 if (seat->priv->session_to_activate)
837 g_object_unref (seat->priv->session_to_activate);
838 seat->priv->session_to_activate = g_object_ref (session);
840 /* Return to existing session if it is open */
841 username = session_get_username (session);
842 existing_session = find_user_session (seat, username);
843 if (existing_session && session != existing_session)
845 g_debug ("Returning to existing user session %s", username);
846 session_stop (session);
847 seat_set_active_session (seat, existing_session);
851 /* Get session command to run */
854 case SESSION_TYPE_LOCAL:
855 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
857 case SESSION_TYPE_REMOTE:
858 sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
862 /* Load user preferences */
863 user = session_get_user (session);
867 session_name = user_get_xsession (user);
868 language = user_get_language (user);
872 session_name = seat_get_string_property (seat, "user-session");
874 user_set_xsession (session_get_user (session), session_name);
876 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
877 g_free (sessions_dir);
881 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
885 session_set_argv (session, argv);
887 session_set_env (session, "DESKTOP_SESSION", session_name);
888 session_set_env (session, "GDMSESSION", session_name);
889 if (language && language[0] != '\0')
891 session_set_env (session, "LANG", language);
892 session_set_env (session, "GDM_LANG", language);
895 /* If can re-use the display server, stop the greeter first */
896 if (seat->priv->share_display_server)
898 /* Run on the same display server after the greeter has stopped */
899 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
901 g_debug ("Stopping greeter");
902 session_stop (SESSION (greeter));
906 /* Otherwise start a new display server for this session */
909 DisplayServer *display_server;
911 display_server = create_display_server (seat);
912 if (!display_server_start (display_server))
915 session_set_display_server (session, display_server);
922 create_greeter_session (Seat *seat)
924 gchar *sessions_dir, **argv;
925 Greeter *greeter_session;
927 const gchar *greeter_wrapper;
929 sessions_dir = config_get_string (config_get_instance (), "LightDM", "greeters-directory");
930 argv = get_session_argv (sessions_dir,
931 seat_get_string_property (seat, "greeter-session"),
933 g_free (sessions_dir);
937 greeter_wrapper = seat_get_string_property (seat, "greeter-wrapper");
941 path = g_find_program_in_path (greeter_wrapper);
942 prepend_argv (&argv, path ? path : greeter_wrapper);
946 greeter_session = SEAT_GET_CLASS (seat)->create_greeter_session (seat);
947 seat->priv->sessions = g_list_append (seat->priv->sessions, SESSION (greeter_session));
948 g_signal_connect (greeter_session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
949 g_signal_connect (greeter_session, "stopped", G_CALLBACK (session_stopped_cb), seat);
951 set_session_env (SESSION (greeter_session));
953 session_set_pam_service (SESSION (greeter_session), GREETER_SERVICE);
954 greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
955 session_set_username (SESSION (greeter_session), greeter_user);
956 g_free (greeter_user);
957 session_set_argv (SESSION (greeter_session), argv);
959 greeter_set_pam_services (greeter_session, USER_SERVICE, AUTOLOGIN_SERVICE);
960 g_signal_connect (greeter_session, "create-session", G_CALLBACK (greeter_create_session_cb), seat);
961 g_signal_connect (greeter_session, "start-session", G_CALLBACK (greeter_start_session_cb), seat);
963 /* Set hints to greeter */
964 greeter_set_hint (greeter_session, "default-session", seat_get_string_property (seat, "user-session"));
965 greeter_set_allow_guest (greeter_session, seat_get_allow_guest (seat));
966 greeter_set_hint (greeter_session, "hide-users", seat_get_boolean_property (seat, "greeter-hide-users") ? "true" : "false");
967 greeter_set_hint (greeter_session, "show-manual-login", seat_get_boolean_property (seat, "greeter-show-manual-login") ? "true" : "false");
968 greeter_set_hint (greeter_session, "show-remote-login", seat_get_boolean_property (seat, "greeter-show-remote-login") ? "true" : "false");
969 greeter_set_hint (greeter_session, "has-guest-account", seat_get_allow_guest (seat) && seat_get_boolean_property (seat, "greeter-allow-guest") ? "true" : "false");
971 return greeter_session;
975 find_session_for_display_server (Seat *seat, DisplayServer *display_server)
979 for (link = seat->priv->sessions; link; link = link->next)
981 Session *session = link->data;
982 if (session_get_display_server (session) == display_server && !session_get_is_stopping (session))
990 display_server_ready_cb (DisplayServer *display_server, Seat *seat)
995 /* Run setup script */
996 script = seat_get_string_property (seat, "display-setup-script");
997 if (script && !run_script (seat, display_server, script, NULL))
999 g_debug ("Stopping display server due to failed setup script");
1000 display_server_stop (display_server);
1004 /* Stop if don't need to run a session */
1005 if (!display_server_get_start_local_sessions (display_server))
1008 emit_upstart_signal ("login-session-start");
1010 /* Start the session waiting for this display server */
1011 session = find_session_for_display_server (seat, display_server);
1014 if (session_get_is_authenticated (session))
1016 g_debug ("Display server ready, running session");
1017 run_session (seat, session);
1021 g_debug ("Display server ready, starting session authentication");
1022 start_session (seat, session);
1027 g_debug ("Stopping not required display server");
1028 display_server_stop (display_server);
1032 static DisplayServer *
1033 create_display_server (Seat *seat)
1035 DisplayServer *display_server;
1037 display_server = SEAT_GET_CLASS (seat)->create_display_server (seat, "");
1038 seat->priv->display_servers = g_list_append (seat->priv->display_servers, display_server);
1039 g_signal_connect (display_server, "ready", G_CALLBACK (display_server_ready_cb), seat);
1040 g_signal_connect (display_server, "stopped", G_CALLBACK (display_server_stopped_cb), seat);
1042 return display_server;
1046 find_greeter_session (Seat *seat)
1050 for (link = seat->priv->sessions; link; link = link->next)
1052 Session *session = link->data;
1053 if (!session_get_is_stopping (session) && IS_GREETER (session))
1054 return GREETER (session);
1061 seat_switch_to_greeter (Seat *seat)
1063 Greeter *greeter_session;
1064 DisplayServer *display_server;
1066 g_return_val_if_fail (seat != NULL, FALSE);
1068 if (!seat->priv->can_switch)
1071 /* Switch to greeter if one open (shouldn't be though) */
1072 greeter_session = find_greeter_session (seat);
1073 if (greeter_session)
1075 g_debug ("Switching to existing greeter");
1076 seat_set_active_session (seat, SESSION (greeter_session));
1080 greeter_session = create_greeter_session (seat);
1081 if (seat->priv->session_to_activate)
1082 g_object_unref (seat->priv->session_to_activate);
1083 seat->priv->session_to_activate = g_object_ref (greeter_session);
1085 display_server = create_display_server (seat);
1086 session_set_display_server (SESSION (greeter_session), display_server);
1087 if (!display_server_start (display_server))
1094 seat_switch_to_user (Seat *seat, const gchar *username, const gchar *session_name)
1097 DisplayServer *display_server;
1099 g_return_val_if_fail (seat != NULL, FALSE);
1100 g_return_val_if_fail (username != NULL, FALSE);
1102 if (!seat->priv->can_switch)
1105 g_debug ("Switching to user %s", username);
1107 session = find_user_session (seat, username);
1110 g_debug ("Switching to existing user session %s", username);
1111 seat_set_active_session (seat, session);
1115 session = create_user_session (seat, username);
1118 if (seat->priv->session_to_activate)
1119 g_object_unref (seat->priv->session_to_activate);
1120 seat->priv->session_to_activate = g_object_ref (session);
1121 session_set_pam_service (session, USER_SERVICE);
1123 display_server = create_display_server (seat);
1124 session_set_display_server (session, display_server);
1125 if (!display_server_start (display_server))
1132 find_guest_session (Seat *seat)
1136 for (link = seat->priv->sessions; link; link = link->next)
1138 Session *session = link->data;
1139 if (!session_get_is_stopping (session) && session_get_is_guest (session))
1147 seat_switch_to_guest (Seat *seat, const gchar *session_name)
1150 DisplayServer *display_server;
1152 g_return_val_if_fail (seat != NULL, FALSE);
1154 if (!seat->priv->can_switch || !seat_get_allow_guest (seat))
1157 /* Switch to session if one open */
1158 session = find_guest_session (seat);
1161 g_debug ("Switching to existing guest account %s", session_get_username (session));
1162 seat_set_active_session (seat, session);
1166 display_server = create_display_server (seat);
1167 if (!display_server_start (display_server))
1170 session = create_guest_session (seat);
1173 if (seat->priv->session_to_activate)
1174 g_object_unref (seat->priv->session_to_activate);
1175 seat->priv->session_to_activate = g_object_ref (session);
1176 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1177 session_set_display_server (session, display_server);
1183 seat_lock (Seat *seat, const gchar *username)
1185 Greeter *greeter_session;
1186 DisplayServer *display_server;
1188 g_return_val_if_fail (seat != NULL, FALSE);
1190 if (!seat->priv->can_switch)
1193 g_debug ("Locking seat");
1195 /* Switch to greeter if one open (shouldn't be though) */
1196 greeter_session = find_greeter_session (seat);
1197 if (greeter_session)
1199 g_debug ("Switching to existing greeter");
1200 seat_set_active_session (seat, SESSION (greeter_session));
1204 display_server = create_display_server (seat);
1205 if (!display_server_start (display_server))
1208 greeter_session = create_greeter_session (seat);
1209 if (seat->priv->session_to_activate)
1210 g_object_unref (seat->priv->session_to_activate);
1211 seat->priv->session_to_activate = g_object_ref (greeter_session);
1212 greeter_set_hint (greeter_session, "lock-screen", "true");
1214 greeter_set_hint (greeter_session, "select-user", username);
1215 session_set_display_server (SESSION (greeter_session), display_server);
1221 seat_stop (Seat *seat)
1223 g_return_if_fail (seat != NULL);
1225 if (seat->priv->stopping)
1228 g_debug ("Stopping seat");
1229 seat->priv->stopping = TRUE;
1230 SEAT_GET_CLASS (seat)->stop (seat);
1234 seat_get_is_stopping (Seat *seat)
1236 g_return_val_if_fail (seat != NULL, FALSE);
1237 return seat->priv->stopping;
1241 seat_real_setup (Seat *seat)
1246 seat_real_start (Seat *seat)
1248 const gchar *autologin_username;
1249 int autologin_timeout;
1250 gboolean autologin_guest;
1251 gboolean autologin_in_background;
1252 Session *session = NULL;
1253 DisplayServer *display_server;
1255 g_debug ("Starting seat");
1257 display_server = create_display_server (seat);
1259 /* If this display server doesn't have a session running on it, just start it */
1260 if (!display_server_get_start_local_sessions (display_server))
1261 return display_server_start (display_server);
1263 /* Get autologin settings */
1264 autologin_username = seat_get_string_property (seat, "autologin-user");
1265 if (g_strcmp0 (autologin_username, "") == 0)
1266 autologin_username = NULL;
1267 autologin_timeout = seat_get_integer_property (seat, "autologin-user-timeout");
1268 autologin_guest = seat_get_boolean_property (seat, "autologin-guest");
1269 autologin_in_background = seat_get_boolean_property (seat, "autologin-in-background");
1271 /* Autologin if configured */
1272 if (autologin_timeout == 0 || autologin_in_background)
1274 if (autologin_guest)
1275 session = create_guest_session (seat);
1276 else if (autologin_username != NULL)
1277 session = create_user_session (seat, autologin_username);
1281 if (seat->priv->session_to_activate)
1282 g_object_unref (seat->priv->session_to_activate);
1283 seat->priv->session_to_activate = g_object_ref (session);
1284 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1287 /* Load in background if required */
1288 if (autologin_in_background && session)
1290 DisplayServer *background_display_server;
1292 background_display_server = create_display_server (seat);
1293 session_set_display_server (session, background_display_server);
1294 if (!display_server_start (background_display_server))
1297 /* Start a greeter as well */
1302 /* Fallback to a greeter */
1305 Greeter *greeter_session;
1307 greeter_session = create_greeter_session (seat);
1308 if (seat->priv->session_to_activate)
1309 g_object_unref (seat->priv->session_to_activate);
1310 seat->priv->session_to_activate = g_object_ref (greeter_session);
1311 session = SESSION (greeter_session);
1313 if (autologin_timeout)
1317 value = g_strdup_printf ("%d", autologin_timeout);
1318 greeter_set_hint (greeter_session, "autologin-timeout", value);
1320 if (autologin_username)
1321 greeter_set_hint (greeter_session, "autologin-user", autologin_username);
1322 if (autologin_guest)
1323 greeter_set_hint (greeter_session, "autologin-guest", "true");
1327 /* Fail if can't start a session */
1334 /* Start display server to show session on */
1335 session_set_display_server (session, display_server);
1336 if (!display_server_start (display_server))
1342 static DisplayServer *
1343 seat_real_create_display_server (Seat *seat, const gchar *session_type)
1349 seat_real_set_active_session (Seat *seat, Session *session)
1354 seat_real_get_active_session (Seat *seat)
1360 seat_real_stop (Seat *seat)
1364 check_stopped (seat);
1365 if (seat->priv->stopped)
1368 /* Stop all the display servers and sessions on the seat. Copy the list as
1369 * it might be modified if a display server / session stops during this loop */
1370 list = g_list_copy (seat->priv->display_servers);
1371 for (link = list; link; link = link->next)
1372 g_object_ref (link->data);
1373 for (link = list; link; link = link->next)
1375 DisplayServer *display_server = link->data;
1376 if (!display_server_get_is_stopping (display_server))
1378 g_debug ("Stopping display server");
1379 display_server_stop (display_server);
1382 g_list_free_full (list, g_object_unref);
1383 list = g_list_copy (seat->priv->sessions);
1384 for (link = list; link; link = link->next)
1385 g_object_ref (link->data);
1386 for (link = list; link; link = link->next)
1388 Session *session = link->data;
1389 if (!session_get_is_stopping (session))
1391 g_debug ("Stopping session");
1392 session_stop (session);
1395 g_list_free_full (list, g_object_unref);
1399 seat_init (Seat *seat)
1401 seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_TYPE, SeatPrivate);
1402 seat->priv->properties = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1403 seat->priv->share_display_server = TRUE;
1407 seat_finalize (GObject *object)
1412 self = SEAT (object);
1414 g_hash_table_unref (self->priv->properties);
1415 for (link = self->priv->display_servers; link; link = link->next)
1417 DisplayServer *display_server = link->data;
1418 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1420 g_list_free_full (self->priv->display_servers, g_object_unref);
1421 for (link = self->priv->sessions; link; link = link->next)
1423 Session *session = link->data;
1424 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1426 g_list_free_full (self->priv->sessions, g_object_unref);
1427 if (self->priv->session_to_activate)
1428 g_object_unref (self->priv->session_to_activate);
1430 G_OBJECT_CLASS (seat_parent_class)->finalize (object);
1434 seat_class_init (SeatClass *klass)
1436 GObjectClass *object_class = G_OBJECT_CLASS (klass);
1438 klass->setup = seat_real_setup;
1439 klass->start = seat_real_start;
1440 klass->create_display_server = seat_real_create_display_server;
1441 klass->set_active_session = seat_real_set_active_session;
1442 klass->get_active_session = seat_real_get_active_session;
1443 klass->run_script = seat_real_run_script;
1444 klass->stop = seat_real_stop;
1446 object_class->finalize = seat_finalize;
1448 g_type_class_add_private (klass, sizeof (SeatPrivate));
1450 signals[SESSION_ADDED] =
1451 g_signal_new ("session-added",
1452 G_TYPE_FROM_CLASS (klass),
1454 G_STRUCT_OFFSET (SeatClass, session_added),
1457 G_TYPE_NONE, 1, SESSION_TYPE);
1458 signals[RUNNING_USER_SESSION] =
1459 g_signal_new ("running-user-session",
1460 G_TYPE_FROM_CLASS (klass),
1462 G_STRUCT_OFFSET (SeatClass, running_user_session),
1465 G_TYPE_NONE, 1, SESSION_TYPE);
1466 signals[SESSION_REMOVED] =
1467 g_signal_new ("session-removed",
1468 G_TYPE_FROM_CLASS (klass),
1470 G_STRUCT_OFFSET (SeatClass, session_removed),
1473 G_TYPE_NONE, 1, SESSION_TYPE);
1475 g_signal_new ("stopped",
1476 G_TYPE_FROM_CLASS (klass),
1478 G_STRUCT_OFFSET (SeatClass, stopped),