2 * Copyright (C) 2010-2011 Robert Ancell.
3 * Author: Robert Ancell <robert.ancell@canonical.com>
5 * This program is free software: you can redistribute it and/or modify it under
6 * the terms of the GNU General Public License as published by the Free Software
7 * Foundation, either version 3 of the License, or (at your option) any later
8 * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
17 #include "configuration.h"
18 #include "guest-account.h"
20 #include "session-config.h"
29 static guint signals[LAST_SIGNAL] = { 0 };
33 /* Configuration for this seat */
34 GHashTable *properties;
36 /* TRUE if able to switch users */
39 /* TRUE if display server can be shared for sessions */
40 gboolean share_display_server;
42 /* The display servers on this seat */
43 GList *display_servers;
45 /* The sessions on this seat */
48 /* The session to set active when it starts */
49 Session *session_to_activate;
51 /* TRUE if stopping this seat (waiting for displays to stop) */
58 /* PAM services to use */
59 #define GREETER_SERVICE "lightdm-greeter"
60 #define USER_SERVICE "lightdm"
61 #define AUTOLOGIN_SERVICE "lightdm-autologin"
63 G_DEFINE_TYPE (Seat, seat, G_TYPE_OBJECT);
70 static GHashTable *seat_modules = NULL;
72 // FIXME: Make a get_display_server() that re-uses display servers if supported
73 static DisplayServer *create_display_server (Seat *seat, const gchar *session_type);
74 static Greeter *create_greeter_session (Seat *seat);
75 static void start_session (Seat *seat, Session *session);
78 seat_register_module (const gchar *name, GType type)
83 seat_modules = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
85 g_debug ("Registered seat module %s", name);
87 module = g_malloc0 (sizeof (SeatModule));
88 module->name = g_strdup (name);
90 g_hash_table_insert (seat_modules, g_strdup (name), module);
94 seat_new (const gchar *module_name)
99 g_return_val_if_fail (module_name != NULL, NULL);
102 m = g_hash_table_lookup (seat_modules, module_name);
106 seat = g_object_new (m->type, NULL);
112 seat_set_property (Seat *seat, const gchar *name, const gchar *value)
114 g_return_if_fail (seat != NULL);
115 g_hash_table_insert (seat->priv->properties, g_strdup (name), g_strdup (value));
119 seat_get_string_property (Seat *seat, const gchar *name)
121 g_return_val_if_fail (seat != NULL, NULL);
122 return g_hash_table_lookup (seat->priv->properties, name);
126 seat_get_boolean_property (Seat *seat, const gchar *name)
128 return g_strcmp0 (seat_get_string_property (seat, name), "true") == 0;
132 seat_get_integer_property (Seat *seat, const gchar *name)
136 value = seat_get_string_property (seat, name);
137 return value ? atoi (value) : 0;
141 seat_set_can_switch (Seat *seat, gboolean can_switch)
143 g_return_if_fail (seat != NULL);
145 seat->priv->can_switch = can_switch;
149 seat_set_share_display_server (Seat *seat, gboolean share_display_server)
151 g_return_if_fail (seat != NULL);
153 seat->priv->share_display_server = share_display_server;
157 seat_start (Seat *seat)
159 g_return_val_if_fail (seat != NULL, FALSE);
161 SEAT_GET_CLASS (seat)->setup (seat);
162 return SEAT_GET_CLASS (seat)->start (seat);
166 seat_get_sessions (Seat *seat)
168 g_return_val_if_fail (seat != NULL, NULL);
169 return seat->priv->sessions;
173 seat_set_active_session (Seat *seat, Session *session)
177 g_return_if_fail (seat != NULL);
179 SEAT_GET_CLASS (seat)->set_active_session (seat, session);
181 /* Stop any greeters */
182 for (link = seat->priv->sessions; link; link = link->next)
184 Session *s = link->data;
186 if (s == session || session_get_is_stopping (s))
191 g_debug ("Stopping greeter");
198 seat_get_active_session (Seat *seat)
200 g_return_val_if_fail (seat != NULL, NULL);
201 return SEAT_GET_CLASS (seat)->get_active_session (seat);
205 seat_get_can_switch (Seat *seat)
207 g_return_val_if_fail (seat != NULL, FALSE);
208 return seat->priv->can_switch;
212 seat_get_allow_guest (Seat *seat)
214 g_return_val_if_fail (seat != NULL, FALSE);
215 return seat_get_boolean_property (seat, "allow-guest") && guest_account_is_installed ();
219 run_script (Seat *seat, DisplayServer *display_server, const gchar *script_name, User *user)
222 gboolean result = FALSE;
224 script = process_new ();
226 process_set_command (script, script_name);
228 /* Set POSIX variables */
229 process_set_clear_environment (script, TRUE);
230 process_set_env (script, "SHELL", "/bin/sh");
232 /* Variables required for regression tests */
233 if (g_getenv ("LIGHTDM_TEST_ROOT"))
235 process_set_env (script, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
236 process_set_env (script, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
237 process_set_env (script, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
238 process_set_env (script, "PATH", g_getenv ("PATH"));
241 process_set_env (script, "PATH", "/usr/local/bin:/usr/bin:/bin");
245 process_set_env (script, "USER", user_get_name (user));
246 process_set_env (script, "LOGNAME", user_get_name (user));
247 process_set_env (script, "HOME", user_get_home_directory (user));
250 process_set_env (script, "HOME", "/");
252 SEAT_GET_CLASS (seat)->run_script (seat, display_server, script);
254 if (process_start (script, TRUE))
258 exit_status = process_get_exit_status (script);
259 if (WIFEXITED (exit_status))
261 g_debug ("Exit status of %s: %d", script_name, WEXITSTATUS (exit_status));
262 result = WEXITSTATUS (exit_status) == EXIT_SUCCESS;
266 g_object_unref (script);
272 seat_real_run_script (Seat *seat, DisplayServer *display_server, Process *process)
277 emit_upstart_signal (const gchar *signal)
279 g_return_if_fail (signal != NULL);
280 g_return_if_fail (signal[0] != 0);
285 gchar *cmd = g_strdup_printf ("initctl -q emit %s DISPLAY_MANAGER=lightdm", signal);
286 g_spawn_command_line_async (cmd, NULL); /* OK if it fails, probably not installed */
291 check_stopped (Seat *seat)
293 if (seat->priv->stopping &&
294 !seat->priv->stopped &&
295 g_list_length (seat->priv->display_servers) == 0 &&
296 g_list_length (seat->priv->sessions) == 0)
298 seat->priv->stopped = TRUE;
299 g_debug ("Seat stopped");
300 g_signal_emit (seat, signals[STOPPED], 0);
305 get_start_local_sessions (Seat *seat)
307 return SEAT_GET_CLASS (seat)->get_start_local_sessions (seat);
311 display_server_stopped_cb (DisplayServer *display_server, Seat *seat)
314 Session *active_session;
316 g_debug ("Display server stopped");
318 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
319 seat->priv->display_servers = g_list_remove (seat->priv->display_servers, display_server);
321 if (seat->priv->stopping)
323 check_stopped (seat);
324 g_object_unref (display_server);
328 /* Stop all sessions on this display server */
329 list = g_list_copy (seat->priv->sessions);
330 for (link = list; link; link = link->next)
331 g_object_ref (link->data);
332 for (link = list; link; link = link->next)
334 Session *session = link->data;
336 if (session_get_display_server (session) != display_server || session_get_is_stopping (session))
339 /* Stop seat if this is the only display server and it failed to start a greeter */
340 if (IS_GREETER (session) &&
341 !session_get_is_started (session) &&
342 g_list_length (seat->priv->display_servers) == 0)
344 g_debug ("Stopping seat, greeter display server failed to start");
348 g_debug ("Stopping session");
349 session_stop (session);
351 g_list_free_full (list, g_object_unref);
353 if (!seat->priv->stopping && get_start_local_sessions (seat))
355 /* If we were the active session, switch to a greeter */
356 active_session = seat_get_active_session (seat);
357 if (!active_session || session_get_display_server (active_session) == display_server)
359 g_debug ("Active display server stopped, starting greeter");
360 seat_switch_to_greeter (seat);
364 g_object_unref (display_server);
368 switch_to_greeter_from_failed_session (Seat *seat, Session *session)
370 Greeter *greeter_session;
372 greeter_session = create_greeter_session (seat);
373 if (session_get_is_guest (session))
374 greeter_set_hint (greeter_session, "select-guest", "true");
376 greeter_set_hint (greeter_session, "select-user", session_get_username (session));
377 if (seat->priv->session_to_activate)
378 g_object_unref (seat->priv->session_to_activate);
379 seat->priv->session_to_activate = g_object_ref (greeter_session);
381 if (seat->priv->share_display_server)
382 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
385 DisplayServer *display_server;
387 display_server = create_display_server (seat, session_get_session_type (session));
388 if (!display_server_start (display_server))
390 g_debug ("Failed to start display server for greeter");
394 session_set_display_server (session, display_server);
397 start_session (seat, SESSION (greeter_session));
399 /* Stop failed session */
400 session_stop (session);
404 start_session (Seat *seat, Session *session)
406 if (session_start (session))
409 if (IS_GREETER (session))
411 g_debug ("Failed to start greeter");
412 display_server_stop (session_get_display_server (session));
416 g_debug ("Failed to start session, starting greeter");
417 switch_to_greeter_from_failed_session (seat, session);
421 run_session (Seat *seat, Session *session)
425 if (IS_GREETER (session))
426 script = seat_get_string_property (seat, "greeter-setup-script");
428 script = seat_get_string_property (seat, "session-setup-script");
429 if (script && !run_script (seat, session_get_display_server (session), script, NULL))
431 g_debug ("Switching to greeter due to failed setup script");
432 switch_to_greeter_from_failed_session (seat, session);
436 if (!IS_GREETER (session))
437 g_signal_emit (seat, signals[RUNNING_USER_SESSION], 0, session);
439 session_run (session);
441 // FIXME: Wait until the session is ready
443 if (session == seat->priv->session_to_activate)
445 seat_set_active_session (seat, session);
446 g_object_unref (seat->priv->session_to_activate);
447 seat->priv->session_to_activate = NULL;
452 session_authentication_complete_cb (Session *session, Seat *seat)
454 if (session_get_is_authenticated (session))
456 g_debug ("Session authenticated, running command");
457 run_session (seat, session);
459 else if (!IS_GREETER (session))
461 g_debug ("Switching to greeter due to failed authentication");
462 switch_to_greeter_from_failed_session (seat, session);
466 g_debug ("Stopping session that failed authentication");
467 session_stop (session);
472 session_stopped_cb (Session *session, Seat *seat)
474 DisplayServer *display_server;
476 g_debug ("Session stopped");
478 display_server = session_get_display_server (session);
481 if (!IS_GREETER (session))
484 script = seat_get_string_property (seat, "session-cleanup-script");
486 run_script (seat, display_server, script, session_get_user (session));
489 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
490 seat->priv->sessions = g_list_remove (seat->priv->sessions, session);
492 /* We were waiting for this session, but it didn't start :( */
493 // FIXME: Start a greeter on this?
494 if (session == seat->priv->session_to_activate)
496 g_object_unref (seat->priv->session_to_activate);
497 seat->priv->session_to_activate = NULL;
500 if (seat->priv->stopping)
502 check_stopped (seat);
503 g_object_unref (session);
507 /* If this is the greeter session then re-use this display server */
508 if (IS_GREETER (session) && seat->priv->share_display_server &&
509 greeter_get_start_session (GREETER (session)))
513 for (link = seat->priv->sessions; link; link = link->next)
515 Session *s = link->data;
517 /* Skip this session and sessions on other display servers */
518 if (s == session || session_get_display_server (s) != display_server || session_get_is_stopping (s))
521 if (session_get_is_authenticated (s))
523 g_debug ("Greeter stopped, running session");
524 run_session (seat, s);
528 g_debug ("Greeter stopped, starting session authentication");
529 start_session (seat, s);
534 /* If this is the greeter and nothing else is running then stop the seat */
535 else if (IS_GREETER (session) &&
536 !greeter_get_start_session (GREETER (session)) &&
537 g_list_length (seat->priv->display_servers) == 1 &&
538 g_list_nth_data (seat->priv->display_servers, 0) == display_server)
540 g_debug ("Stopping seat, failed to start a greeter");
543 /* If we were the active session, switch to a greeter */
544 else if (!IS_GREETER (session) && session == seat_get_active_session (seat))
546 g_debug ("Active session stopped, starting greeter");
547 seat_switch_to_greeter (seat);
550 /* Stop the display server if no-longer required */
551 if (display_server && !display_server_get_is_stopping (display_server))
556 for (link = seat->priv->sessions; link; link = link->next)
558 Session *s = link->data;
561 if (session_get_display_server (s) == display_server)
566 g_debug ("Stopping display server, no sessions require it");
567 display_server_stop (display_server);
571 g_signal_emit (seat, signals[SESSION_REMOVED], 0, session);
572 g_object_unref (session);
576 set_session_env (Session *session)
578 /* Connect using the session bus */
581 if (g_getenv ("DBUS_SESSION_BUS_ADDRESS"))
582 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
583 session_set_env (session, "LDM_BUS", "SESSION");
584 if (g_getenv ("LD_PRELOAD"))
585 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
586 if (g_getenv ("LD_LIBRARY_PATH"))
587 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
588 if (g_getenv ("PATH"))
589 session_set_env (session, "PATH", g_getenv ("PATH"));
592 /* Variables required for regression tests */
593 if (g_getenv ("LIGHTDM_TEST_ROOT"))
595 session_set_env (session, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
596 session_set_env (session, "DBUS_SYSTEM_BUS_ADDRESS", g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
597 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
598 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
599 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
600 session_set_env (session, "GI_TYPELIB_PATH", g_getenv ("GI_TYPELIB_PATH"));
605 create_session (Seat *seat, gboolean autostart)
609 session = SEAT_GET_CLASS (seat)->create_session (seat);
610 seat->priv->sessions = g_list_append (seat->priv->sessions, session);
612 g_signal_connect (session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
613 g_signal_connect (session, "stopped", G_CALLBACK (session_stopped_cb), seat);
615 set_session_env (session);
617 g_signal_emit (seat, signals[SESSION_ADDED], 0, session);
623 get_session_argv (SessionConfig *session_config, const gchar *session_wrapper)
628 GError *error = NULL;
630 /* If configured, run sessions through a wrapper */
633 argv = g_malloc (sizeof (gchar *) * 3);
634 path = g_find_program_in_path (session_wrapper);
635 argv[0] = path ? path : g_strdup (session_wrapper);
636 argv[1] = g_strdup (session_config_get_command (session_config));
641 /* Split command into an array listing and make command absolute */
642 result = g_shell_parse_argv (session_config_get_command (session_config), &argc, &argv, &error);
644 g_debug ("Invalid session command '%s': %s", session_config_get_command (session_config), error->message);
645 g_clear_error (&error);
648 path = g_find_program_in_path (argv[0]);
658 static SessionConfig *
659 find_session_config (const gchar *sessions_dir, const gchar *session_name)
662 SessionConfig *session_config = NULL;
664 GError *error = NULL;
666 g_return_val_if_fail (sessions_dir != NULL, NULL);
667 g_return_val_if_fail (session_name != NULL, NULL);
669 dirs = g_strsplit (sessions_dir, ":", -1);
670 for (i = 0; dirs[i]; i++)
672 gchar *filename, *path;
674 filename = g_strdup_printf ("%s.desktop", session_name);
675 path = g_build_filename (dirs[i], filename, NULL);
677 session_config = session_config_new_from_file (path, &error);
682 if (dirs[i+1] == NULL)
683 g_debug ("Failed to find session configuration %s", session_name);
684 g_clear_error (&error);
688 return session_config;
692 create_user_session (Seat *seat, const gchar *username)
696 const gchar *session_name, *language;
697 SessionConfig *session_config;
698 Session *session = NULL;
700 /* Load user preferences */
701 user = accounts_get_user_by_name (username);
704 g_debug ("Can't login unknown user '%s'", username);
707 session_name = user_get_xsession (user);
708 language = user_get_language (user);
711 session_name = seat_get_string_property (seat, "user-session");
712 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
713 session_config = find_session_config (sessions_dir, session_name);
714 g_free (sessions_dir);
719 session = create_session (seat, TRUE);
720 session_set_session_type (session, session_config_get_session_type (session_config));
721 session_set_env (session, "DESKTOP_SESSION", session_name);
722 session_set_env (session, "GDMSESSION", session_name);
723 if (language && language[0] != '\0')
725 session_set_env (session, "LANG", language);
726 session_set_env (session, "GDM_LANG", language);
728 session_set_pam_service (session, AUTOLOGIN_SERVICE);
729 session_set_username (session, username);
730 session_set_do_authenticate (session, TRUE);
731 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
732 session_set_argv (session, argv);
735 g_object_unref (session_config);
738 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
741 g_object_unref (user);
747 create_guest_session (Seat *seat)
749 gchar *sessions_dir, **argv;
750 SessionConfig *session_config;
753 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
754 session_config = find_session_config (sessions_dir, seat_get_string_property (seat, "user-session"));
755 g_free (sessions_dir);
758 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
762 session = create_session (seat, TRUE);
763 session_set_session_type (session, session_config_get_session_type (session_config));
764 session_set_do_authenticate (session, TRUE);
765 session_set_is_guest (session, TRUE);
766 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
767 g_object_unref (session_config);
768 session_set_argv (session, argv);
775 greeter_create_session_cb (Greeter *greeter, Seat *seat)
779 session = create_session (seat, FALSE);
780 session_set_session_type (session, session_get_session_type (SESSION (greeter)));
781 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
783 return g_object_ref (session);
787 prepend_argv (gchar ***argv, const gchar *value)
789 gchar **old_argv, **new_argv;
793 new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
794 new_argv[0] = g_strdup (value);
795 for (i = 0; old_argv[i]; i++)
796 new_argv[i + 1] = old_argv[i];
797 new_argv[i + 1] = NULL;
804 find_user_session (Seat *seat, const gchar *username)
811 for (link = seat->priv->sessions; link; link = link->next)
813 Session *session = link->data;
815 if (!session_get_is_stopping (session) && strcmp (session_get_username (session), username) == 0)
823 greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Seat *seat)
825 Session *session, *existing_session;
826 const gchar *username, *language = NULL;
827 SessionConfig *session_config;
829 gchar *sessions_dir = NULL;
832 /* Get the session to use */
833 if (greeter_get_guest_authenticated (greeter))
835 session = create_guest_session (seat);
838 session_set_pam_service (session, AUTOLOGIN_SERVICE);
841 session = greeter_get_authentication_session (greeter);
843 /* Switch to this session when it is ready */
844 if (seat->priv->session_to_activate)
845 g_object_unref (seat->priv->session_to_activate);
846 seat->priv->session_to_activate = g_object_ref (session);
848 /* Return to existing session if it is open */
849 username = session_get_username (session);
850 existing_session = find_user_session (seat, username);
851 if (existing_session && session != existing_session)
853 g_debug ("Returning to existing user session %s", username);
854 session_stop (session);
855 seat_set_active_session (seat, existing_session);
859 /* Get session command to run */
862 case SESSION_TYPE_LOCAL:
863 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
865 case SESSION_TYPE_REMOTE:
866 sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
870 /* Load user preferences */
871 user = session_get_user (session);
875 session_name = user_get_xsession (user);
876 language = user_get_language (user);
880 session_name = seat_get_string_property (seat, "user-session");
882 user_set_xsession (session_get_user (session), session_name);
884 session_config = find_session_config (sessions_dir, session_name);
885 g_free (sessions_dir);
888 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
892 argv = get_session_argv (session_config, seat_get_string_property (seat, "session-wrapper"));
893 g_object_unref (session_config);
894 session_set_argv (session, argv);
896 session_set_env (session, "DESKTOP_SESSION", session_name);
897 session_set_env (session, "GDMSESSION", session_name);
898 if (language && language[0] != '\0')
900 session_set_env (session, "LANG", language);
901 session_set_env (session, "GDM_LANG", language);
904 /* If can re-use the display server, stop the greeter first */
905 if (seat->priv->share_display_server)
907 /* Run on the same display server after the greeter has stopped */
908 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
910 g_debug ("Stopping greeter");
911 session_stop (SESSION (greeter));
915 /* Otherwise start a new display server for this session */
918 DisplayServer *display_server;
920 display_server = create_display_server (seat, session_get_session_type (session));
921 if (!display_server_start (display_server))
924 session_set_display_server (session, display_server);
931 create_greeter_session (Seat *seat)
933 gchar *sessions_dir, **argv;
934 SessionConfig *session_config;
935 Greeter *greeter_session;
937 const gchar *greeter_wrapper;
939 sessions_dir = config_get_string (config_get_instance (), "LightDM", "greeters-directory");
940 session_config = find_session_config (sessions_dir, seat_get_string_property (seat, "greeter-session"));
941 g_free (sessions_dir);
945 argv = get_session_argv (session_config, NULL);
946 greeter_wrapper = seat_get_string_property (seat, "greeter-wrapper");
950 path = g_find_program_in_path (greeter_wrapper);
951 prepend_argv (&argv, path ? path : greeter_wrapper);
955 greeter_session = SEAT_GET_CLASS (seat)->create_greeter_session (seat);
956 session_set_session_type (SESSION (greeter_session), session_config_get_session_type (session_config));
957 seat->priv->sessions = g_list_append (seat->priv->sessions, SESSION (greeter_session));
958 g_signal_connect (greeter_session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
959 g_signal_connect (greeter_session, "stopped", G_CALLBACK (session_stopped_cb), seat);
961 set_session_env (SESSION (greeter_session));
963 session_set_pam_service (SESSION (greeter_session), GREETER_SERVICE);
964 greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
965 session_set_username (SESSION (greeter_session), greeter_user);
966 g_free (greeter_user);
967 session_set_argv (SESSION (greeter_session), argv);
970 greeter_set_pam_services (greeter_session, USER_SERVICE, AUTOLOGIN_SERVICE);
971 g_signal_connect (greeter_session, "create-session", G_CALLBACK (greeter_create_session_cb), seat);
972 g_signal_connect (greeter_session, "start-session", G_CALLBACK (greeter_start_session_cb), seat);
974 /* Set hints to greeter */
975 greeter_set_hint (greeter_session, "default-session", seat_get_string_property (seat, "user-session"));
976 greeter_set_allow_guest (greeter_session, seat_get_allow_guest (seat));
977 greeter_set_hint (greeter_session, "hide-users", seat_get_boolean_property (seat, "greeter-hide-users") ? "true" : "false");
978 greeter_set_hint (greeter_session, "show-manual-login", seat_get_boolean_property (seat, "greeter-show-manual-login") ? "true" : "false");
979 greeter_set_hint (greeter_session, "show-remote-login", seat_get_boolean_property (seat, "greeter-show-remote-login") ? "true" : "false");
980 greeter_set_hint (greeter_session, "has-guest-account", seat_get_allow_guest (seat) && seat_get_boolean_property (seat, "greeter-allow-guest") ? "true" : "false");
982 g_object_unref (session_config);
984 return greeter_session;
988 find_session_for_display_server (Seat *seat, DisplayServer *display_server)
992 for (link = seat->priv->sessions; link; link = link->next)
994 Session *session = link->data;
995 if (session_get_display_server (session) == display_server && !session_get_is_stopping (session))
1003 display_server_ready_cb (DisplayServer *display_server, Seat *seat)
1005 const gchar *script;
1008 /* Run setup script */
1009 script = seat_get_string_property (seat, "display-setup-script");
1010 if (script && !run_script (seat, display_server, script, NULL))
1012 g_debug ("Stopping display server due to failed setup script");
1013 display_server_stop (display_server);
1017 /* Stop if don't need to run a session */
1018 if (!get_start_local_sessions (seat))
1021 emit_upstart_signal ("login-session-start");
1023 /* Start the session waiting for this display server */
1024 session = find_session_for_display_server (seat, display_server);
1027 if (session_get_is_authenticated (session))
1029 g_debug ("Display server ready, running session");
1030 run_session (seat, session);
1034 g_debug ("Display server ready, starting session authentication");
1035 start_session (seat, session);
1040 g_debug ("Stopping not required display server");
1041 display_server_stop (display_server);
1045 static DisplayServer *
1046 create_display_server (Seat *seat, const gchar *session_type)
1048 DisplayServer *display_server;
1050 display_server = SEAT_GET_CLASS (seat)->create_display_server (seat, session_type);
1051 seat->priv->display_servers = g_list_append (seat->priv->display_servers, display_server);
1052 g_signal_connect (display_server, "ready", G_CALLBACK (display_server_ready_cb), seat);
1053 g_signal_connect (display_server, "stopped", G_CALLBACK (display_server_stopped_cb), seat);
1055 return display_server;
1059 find_greeter_session (Seat *seat)
1063 for (link = seat->priv->sessions; link; link = link->next)
1065 Session *session = link->data;
1066 if (!session_get_is_stopping (session) && IS_GREETER (session))
1067 return GREETER (session);
1074 seat_switch_to_greeter (Seat *seat)
1076 Greeter *greeter_session;
1077 DisplayServer *display_server;
1079 g_return_val_if_fail (seat != NULL, FALSE);
1081 if (!seat->priv->can_switch)
1084 /* Switch to greeter if one open (shouldn't be though) */
1085 greeter_session = find_greeter_session (seat);
1086 if (greeter_session)
1088 g_debug ("Switching to existing greeter");
1089 seat_set_active_session (seat, SESSION (greeter_session));
1093 greeter_session = create_greeter_session (seat);
1094 if (seat->priv->session_to_activate)
1095 g_object_unref (seat->priv->session_to_activate);
1096 seat->priv->session_to_activate = g_object_ref (greeter_session);
1098 display_server = create_display_server (seat, session_get_session_type (SESSION (greeter_session)));
1099 session_set_display_server (SESSION (greeter_session), display_server);
1100 if (!display_server_start (display_server))
1107 seat_switch_to_user (Seat *seat, const gchar *username, const gchar *session_name)
1110 DisplayServer *display_server;
1112 g_return_val_if_fail (seat != NULL, FALSE);
1113 g_return_val_if_fail (username != NULL, FALSE);
1115 if (!seat->priv->can_switch)
1118 g_debug ("Switching to user %s", username);
1120 session = find_user_session (seat, username);
1123 g_debug ("Switching to existing user session %s", username);
1124 seat_set_active_session (seat, session);
1128 session = create_user_session (seat, username);
1131 if (seat->priv->session_to_activate)
1132 g_object_unref (seat->priv->session_to_activate);
1133 seat->priv->session_to_activate = g_object_ref (session);
1134 session_set_pam_service (session, USER_SERVICE);
1136 display_server = create_display_server (seat, session_get_session_type (session));
1137 session_set_display_server (session, display_server);
1138 if (!display_server_start (display_server))
1145 find_guest_session (Seat *seat)
1149 for (link = seat->priv->sessions; link; link = link->next)
1151 Session *session = link->data;
1152 if (!session_get_is_stopping (session) && session_get_is_guest (session))
1160 seat_switch_to_guest (Seat *seat, const gchar *session_name)
1163 DisplayServer *display_server;
1165 g_return_val_if_fail (seat != NULL, FALSE);
1167 if (!seat->priv->can_switch || !seat_get_allow_guest (seat))
1170 /* Switch to session if one open */
1171 session = find_guest_session (seat);
1174 g_debug ("Switching to existing guest account %s", session_get_username (session));
1175 seat_set_active_session (seat, session);
1179 session = create_guest_session (seat);
1183 display_server = create_display_server (seat, session_get_session_type (session));
1184 if (!display_server_start (display_server))
1187 if (seat->priv->session_to_activate)
1188 g_object_unref (seat->priv->session_to_activate);
1189 seat->priv->session_to_activate = g_object_ref (session);
1190 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1191 session_set_display_server (session, display_server);
1197 seat_lock (Seat *seat, const gchar *username)
1199 Greeter *greeter_session;
1200 DisplayServer *display_server;
1202 g_return_val_if_fail (seat != NULL, FALSE);
1204 if (!seat->priv->can_switch)
1207 g_debug ("Locking seat");
1209 /* Switch to greeter if one open (shouldn't be though) */
1210 greeter_session = find_greeter_session (seat);
1211 if (greeter_session)
1213 g_debug ("Switching to existing greeter");
1214 seat_set_active_session (seat, SESSION (greeter_session));
1218 greeter_session = create_greeter_session (seat);
1219 if (!greeter_session)
1222 display_server = create_display_server (seat, session_get_session_type (SESSION (greeter_session)));
1223 if (!display_server_start (display_server))
1226 if (seat->priv->session_to_activate)
1227 g_object_unref (seat->priv->session_to_activate);
1228 seat->priv->session_to_activate = g_object_ref (greeter_session);
1229 greeter_set_hint (greeter_session, "lock-screen", "true");
1231 greeter_set_hint (greeter_session, "select-user", username);
1232 session_set_display_server (SESSION (greeter_session), display_server);
1238 seat_stop (Seat *seat)
1240 g_return_if_fail (seat != NULL);
1242 if (seat->priv->stopping)
1245 g_debug ("Stopping seat");
1246 seat->priv->stopping = TRUE;
1247 SEAT_GET_CLASS (seat)->stop (seat);
1251 seat_get_is_stopping (Seat *seat)
1253 g_return_val_if_fail (seat != NULL, FALSE);
1254 return seat->priv->stopping;
1258 seat_real_get_start_local_sessions (Seat *seat)
1264 seat_real_setup (Seat *seat)
1269 seat_real_start (Seat *seat)
1271 const gchar *autologin_username;
1272 int autologin_timeout;
1273 gboolean autologin_guest;
1274 gboolean autologin_in_background;
1275 Session *session = NULL, *background_session = NULL;
1276 DisplayServer *display_server;
1278 g_debug ("Starting seat");
1280 /* If this display server doesn't have a session running on it, just start it */
1281 if (!get_start_local_sessions (seat))
1283 display_server = create_display_server (seat, "x"); // FIXME: Not necessarily an X seat, but not sure what to put here
1284 return display_server_start (display_server);
1287 /* Get autologin settings */
1288 autologin_username = seat_get_string_property (seat, "autologin-user");
1289 if (g_strcmp0 (autologin_username, "") == 0)
1290 autologin_username = NULL;
1291 autologin_timeout = seat_get_integer_property (seat, "autologin-user-timeout");
1292 autologin_guest = seat_get_boolean_property (seat, "autologin-guest");
1293 autologin_in_background = seat_get_boolean_property (seat, "autologin-in-background");
1295 /* Autologin if configured */
1296 if (autologin_timeout == 0 || autologin_in_background)
1298 if (autologin_guest)
1299 session = create_guest_session (seat);
1300 else if (autologin_username != NULL)
1301 session = create_user_session (seat, autologin_username);
1305 if (seat->priv->session_to_activate)
1306 g_object_unref (seat->priv->session_to_activate);
1307 seat->priv->session_to_activate = g_object_ref (session);
1308 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1311 /* Load in background if required */
1312 if (autologin_in_background && session)
1314 background_session = session;
1319 /* Fallback to a greeter */
1322 Greeter *greeter_session;
1324 greeter_session = create_greeter_session (seat);
1325 if (seat->priv->session_to_activate)
1326 g_object_unref (seat->priv->session_to_activate);
1327 seat->priv->session_to_activate = g_object_ref (greeter_session);
1328 session = SESSION (greeter_session);
1330 if (autologin_timeout)
1334 value = g_strdup_printf ("%d", autologin_timeout);
1335 greeter_set_hint (greeter_session, "autologin-timeout", value);
1337 if (autologin_username)
1338 greeter_set_hint (greeter_session, "autologin-user", autologin_username);
1339 if (autologin_guest)
1340 greeter_set_hint (greeter_session, "autologin-guest", "true");
1344 /* Fail if can't start a session */
1351 display_server = create_display_server (seat, session_get_session_type (session));
1352 if (!display_server)
1355 /* Start display server to show session on */
1356 session_set_display_server (session, display_server);
1357 if (!display_server_start (display_server))
1360 /* Start background session */
1361 if (background_session)
1363 DisplayServer *background_display_server;
1365 background_display_server = create_display_server (seat, session_get_session_type (background_session));
1366 session_set_display_server (background_session, background_display_server);
1367 if (!display_server_start (background_display_server))
1368 g_warning ("Failed to start display server for background session");
1375 seat_real_create_greeter_session (Seat *seat)
1377 return greeter_new ();
1381 seat_real_create_session (Seat *seat)
1383 return session_new ();
1387 seat_real_set_active_session (Seat *seat, Session *session)
1392 seat_real_get_active_session (Seat *seat)
1398 seat_real_stop (Seat *seat)
1402 check_stopped (seat);
1403 if (seat->priv->stopped)
1406 /* Stop all the display servers and sessions on the seat. Copy the list as
1407 * it might be modified if a display server / session stops during this loop */
1408 list = g_list_copy (seat->priv->display_servers);
1409 for (link = list; link; link = link->next)
1410 g_object_ref (link->data);
1411 for (link = list; link; link = link->next)
1413 DisplayServer *display_server = link->data;
1414 if (!display_server_get_is_stopping (display_server))
1416 g_debug ("Stopping display server");
1417 display_server_stop (display_server);
1420 g_list_free_full (list, g_object_unref);
1421 list = g_list_copy (seat->priv->sessions);
1422 for (link = list; link; link = link->next)
1423 g_object_ref (link->data);
1424 for (link = list; link; link = link->next)
1426 Session *session = link->data;
1427 if (!session_get_is_stopping (session))
1429 g_debug ("Stopping session");
1430 session_stop (session);
1433 g_list_free_full (list, g_object_unref);
1437 seat_init (Seat *seat)
1439 seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_TYPE, SeatPrivate);
1440 seat->priv->properties = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1441 seat->priv->share_display_server = TRUE;
1445 seat_finalize (GObject *object)
1450 self = SEAT (object);
1452 g_hash_table_unref (self->priv->properties);
1453 for (link = self->priv->display_servers; link; link = link->next)
1455 DisplayServer *display_server = link->data;
1456 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1458 g_list_free_full (self->priv->display_servers, g_object_unref);
1459 for (link = self->priv->sessions; link; link = link->next)
1461 Session *session = link->data;
1462 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1464 g_list_free_full (self->priv->sessions, g_object_unref);
1465 if (self->priv->session_to_activate)
1466 g_object_unref (self->priv->session_to_activate);
1468 G_OBJECT_CLASS (seat_parent_class)->finalize (object);
1472 seat_class_init (SeatClass *klass)
1474 GObjectClass *object_class = G_OBJECT_CLASS (klass);
1476 klass->get_start_local_sessions = seat_real_get_start_local_sessions;
1477 klass->setup = seat_real_setup;
1478 klass->start = seat_real_start;
1479 klass->create_greeter_session = seat_real_create_greeter_session;
1480 klass->create_session = seat_real_create_session;
1481 klass->set_active_session = seat_real_set_active_session;
1482 klass->get_active_session = seat_real_get_active_session;
1483 klass->run_script = seat_real_run_script;
1484 klass->stop = seat_real_stop;
1486 object_class->finalize = seat_finalize;
1488 g_type_class_add_private (klass, sizeof (SeatPrivate));
1490 signals[SESSION_ADDED] =
1491 g_signal_new ("session-added",
1492 G_TYPE_FROM_CLASS (klass),
1494 G_STRUCT_OFFSET (SeatClass, session_added),
1497 G_TYPE_NONE, 1, SESSION_TYPE);
1498 signals[RUNNING_USER_SESSION] =
1499 g_signal_new ("running-user-session",
1500 G_TYPE_FROM_CLASS (klass),
1502 G_STRUCT_OFFSET (SeatClass, running_user_session),
1505 G_TYPE_NONE, 1, SESSION_TYPE);
1506 signals[SESSION_REMOVED] =
1507 g_signal_new ("session-removed",
1508 G_TYPE_FROM_CLASS (klass),
1510 G_STRUCT_OFFSET (SeatClass, session_removed),
1513 G_TYPE_NONE, 1, SESSION_TYPE);
1515 g_signal_new ("stopped",
1516 G_TYPE_FROM_CLASS (klass),
1518 G_STRUCT_OFFSET (SeatClass, stopped),