2 * Copyright (C) 2010-2011 Robert Ancell.
3 * Author: Robert Ancell <robert.ancell@canonical.com>
5 * This program is free software: you can redistribute it and/or modify it under
6 * the terms of the GNU General Public License as published by the Free Software
7 * Foundation, either version 3 of the License, or (at your option) any later
8 * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
17 #include "configuration.h"
18 #include "guest-account.h"
27 static guint signals[LAST_SIGNAL] = { 0 };
31 /* Configuration for this seat */
32 GHashTable *properties;
34 /* TRUE if able to switch users */
37 /* TRUE if display server can be shared for sessions */
38 gboolean share_display_server;
40 /* The display servers on this seat */
41 GList *display_servers;
43 /* The sessions on this seat */
46 /* The session to set active when it starts */
47 Session *session_to_activate;
49 /* TRUE if stopping this seat (waiting for displays to stop) */
56 /* PAM services to use */
57 #define GREETER_SERVICE "lightdm-greeter"
58 #define USER_SERVICE "lightdm"
59 #define AUTOLOGIN_SERVICE "lightdm-autologin"
61 G_DEFINE_TYPE (Seat, seat, G_TYPE_OBJECT);
68 static GHashTable *seat_modules = NULL;
70 // FIXME: Make a get_display_server() that re-uses display servers if supported
71 static DisplayServer *create_display_server (Seat *seat);
72 static Greeter *create_greeter_session (Seat *seat);
75 seat_register_module (const gchar *name, GType type)
80 seat_modules = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
82 g_debug ("Registered seat module %s", name);
84 module = g_malloc0 (sizeof (SeatModule));
85 module->name = g_strdup (name);
87 g_hash_table_insert (seat_modules, g_strdup (name), module);
91 seat_new (const gchar *module_name)
96 g_return_val_if_fail (module_name != NULL, NULL);
99 m = g_hash_table_lookup (seat_modules, module_name);
103 seat = g_object_new (m->type, NULL);
109 seat_set_property (Seat *seat, const gchar *name, const gchar *value)
111 g_return_if_fail (seat != NULL);
112 g_hash_table_insert (seat->priv->properties, g_strdup (name), g_strdup (value));
116 seat_get_string_property (Seat *seat, const gchar *name)
118 g_return_val_if_fail (seat != NULL, NULL);
119 return g_hash_table_lookup (seat->priv->properties, name);
123 seat_get_boolean_property (Seat *seat, const gchar *name)
125 return g_strcmp0 (seat_get_string_property (seat, name), "true") == 0;
129 seat_get_integer_property (Seat *seat, const gchar *name)
133 value = seat_get_string_property (seat, name);
134 return value ? atoi (value) : 0;
138 seat_set_can_switch (Seat *seat, gboolean can_switch)
140 g_return_if_fail (seat != NULL);
142 seat->priv->can_switch = can_switch;
146 seat_set_share_display_server (Seat *seat, gboolean share_display_server)
148 g_return_if_fail (seat != NULL);
150 seat->priv->share_display_server = share_display_server;
154 seat_start (Seat *seat)
156 g_return_val_if_fail (seat != NULL, FALSE);
158 SEAT_GET_CLASS (seat)->setup (seat);
159 return SEAT_GET_CLASS (seat)->start (seat);
163 seat_get_sessions (Seat *seat)
165 g_return_val_if_fail (seat != NULL, NULL);
166 return seat->priv->sessions;
170 seat_set_active_session (Seat *seat, Session *session)
174 g_return_if_fail (seat != NULL);
176 SEAT_GET_CLASS (seat)->set_active_session (seat, session);
178 /* Stop any greeters */
179 for (link = seat->priv->sessions; link; link = link->next)
181 Session *s = link->data;
183 if (s == session || session_get_is_stopping (s))
188 g_debug ("Stopping greeter");
195 seat_get_active_session (Seat *seat)
197 g_return_val_if_fail (seat != NULL, NULL);
198 return SEAT_GET_CLASS (seat)->get_active_session (seat);
202 seat_get_can_switch (Seat *seat)
204 g_return_val_if_fail (seat != NULL, FALSE);
205 return seat->priv->can_switch;
209 seat_get_allow_guest (Seat *seat)
211 g_return_val_if_fail (seat != NULL, FALSE);
212 return seat_get_boolean_property (seat, "allow-guest") && guest_account_is_installed ();
216 seat_get_greeter_allow_guest (Seat *seat)
218 g_return_val_if_fail (seat != NULL, FALSE);
219 return seat_get_allow_guest (seat) && seat_get_boolean_property (seat, "greeter-allow-guest");
223 run_script (Seat *seat, DisplayServer *display_server, const gchar *script_name, User *user)
226 gboolean result = FALSE;
228 script = process_new ();
230 process_set_command (script, script_name);
232 /* Set POSIX variables */
233 process_set_clear_environment (script, TRUE);
234 process_set_env (script, "SHELL", "/bin/sh");
236 /* Variables required for regression tests */
237 if (g_getenv ("LIGHTDM_TEST_ROOT"))
239 process_set_env (script, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
240 process_set_env (script, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
241 process_set_env (script, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
242 process_set_env (script, "PATH", g_getenv ("PATH"));
245 process_set_env (script, "PATH", "/usr/local/bin:/usr/bin:/bin");
249 process_set_env (script, "USER", user_get_name (user));
250 process_set_env (script, "LOGNAME", user_get_name (user));
251 process_set_env (script, "HOME", user_get_home_directory (user));
254 process_set_env (script, "HOME", "/");
256 SEAT_GET_CLASS (seat)->run_script (seat, display_server, script);
258 if (process_start (script, TRUE))
262 exit_status = process_get_exit_status (script);
263 if (WIFEXITED (exit_status))
265 g_debug ("Exit status of %s: %d", script_name, WEXITSTATUS (exit_status));
266 result = WEXITSTATUS (exit_status) == EXIT_SUCCESS;
270 g_object_unref (script);
276 seat_real_run_script (Seat *seat, DisplayServer *display_server, Process *process)
281 emit_upstart_signal (const gchar *signal)
283 g_return_if_fail (signal != NULL);
284 g_return_if_fail (signal[0] != 0);
289 gchar *cmd = g_strdup_printf ("initctl -q emit %s DISPLAY_MANAGER=lightdm", signal);
290 g_spawn_command_line_async (cmd, NULL); /* OK if it fails, probably not installed */
295 check_stopped (Seat *seat)
297 if (seat->priv->stopping &&
298 !seat->priv->stopped &&
299 g_list_length (seat->priv->display_servers) == 0 &&
300 g_list_length (seat->priv->sessions) == 0)
302 seat->priv->stopped = TRUE;
303 g_debug ("Seat stopped");
304 g_signal_emit (seat, signals[STOPPED], 0);
309 display_server_stopped_cb (DisplayServer *display_server, Seat *seat)
312 Session *active_session;
314 g_debug ("Display server stopped");
316 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
317 seat->priv->display_servers = g_list_remove (seat->priv->display_servers, display_server);
319 if (seat->priv->stopping)
321 check_stopped (seat);
322 g_object_unref (display_server);
326 /* Stop all sessions on this display server */
327 for (link = seat->priv->sessions; link; link = link->next)
329 Session *session = link->data;
331 if (session_get_display_server (session) != display_server || session_get_is_stopping (session))
334 /* Stop seat if this is the only display server and it failed to start a greeter */
335 if (IS_GREETER (session) &&
336 !session_get_is_started (session) &&
337 g_list_length (seat->priv->display_servers) == 0)
339 g_debug ("Stopping seat, greeter display server failed to start");
343 g_debug ("Stopping session");
344 session_stop (session);
347 /* If we were the active session, switch to a greeter */
348 active_session = seat_get_active_session (seat);
349 if (!active_session || session_get_display_server (active_session) == display_server)
351 g_debug ("Active display server stopped, starting greeter");
352 seat_switch_to_greeter (seat);
355 g_object_unref (display_server);
359 start_session (Seat *seat, Session *session)
361 Greeter *greeter_session;
363 if (session_start (session))
366 if (IS_GREETER (session))
368 g_debug ("Failed to start greeter");
369 display_server_stop (session_get_display_server (session));
373 g_debug ("Failed to start session, starting greeter");
374 greeter_session = create_greeter_session (seat);
375 if (seat->priv->session_to_activate)
376 g_object_unref (seat->priv->session_to_activate);
377 seat->priv->session_to_activate = g_object_ref (greeter_session);
379 if (seat->priv->share_display_server)
380 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
383 DisplayServer *display_server;
385 display_server = create_display_server (seat);
386 if (!display_server_start (display_server))
388 g_debug ("Failed to start display server for greeter");
392 session_set_display_server (session, display_server);
395 start_session (seat, SESSION (greeter_session));
399 run_session (Seat *seat, Session *session)
403 if (IS_GREETER (session))
404 script = seat_get_string_property (seat, "greeter-setup-script");
406 script = seat_get_string_property (seat, "session-setup-script");
407 if (script && !run_script (seat, session_get_display_server (session), script, NULL))
409 Greeter *greeter_session;
411 g_debug ("Switching to greeter due to failed setup script");
413 greeter_session = create_greeter_session (seat);
414 if (seat->priv->session_to_activate)
415 g_object_unref (seat->priv->session_to_activate);
416 seat->priv->session_to_activate = g_object_ref (greeter_session);
418 if (seat->priv->share_display_server)
419 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
422 DisplayServer *display_server;
424 display_server = create_display_server (seat);
425 if (!display_server_start (display_server))
427 g_debug ("Failed to start display server for greeter");
431 session_set_display_server (SESSION (greeter_session), display_server);
434 start_session (seat, SESSION (greeter_session));
436 /* Stop failed session */
437 session_stop (session);
442 session_run (session);
444 // FIXME: Wait until the session is ready
446 if (session == seat->priv->session_to_activate)
448 seat_set_active_session (seat, session);
449 g_object_unref (seat->priv->session_to_activate);
450 seat->priv->session_to_activate = NULL;
455 session_authentication_complete_cb (Session *session, Seat *seat)
457 if (session_get_is_authenticated (session))
459 g_debug ("Session authenticated, running command");
460 run_session (seat, session);
462 else if (!IS_GREETER (session))
464 Greeter *greeter_session;
466 g_debug ("Switching to greeter due to failed authentication");
468 greeter_session = create_greeter_session (seat);
469 if (seat->priv->session_to_activate)
470 g_object_unref (seat->priv->session_to_activate);
471 seat->priv->session_to_activate = g_object_ref (greeter_session);
472 if (session_get_is_guest (session))
473 greeter_set_hint (greeter_session, "select-guest", "true");
475 greeter_set_hint (greeter_session, "select-user", session_get_username (session));
477 if (seat->priv->share_display_server)
478 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
481 DisplayServer *display_server;
483 display_server = create_display_server (seat);
484 if (!display_server_start (display_server))
486 g_debug ("Failed to start display server for greeter");
490 session_set_display_server (SESSION (greeter_session), display_server);
493 start_session (seat, SESSION (greeter_session));
495 /* Stop failed session */
496 session_stop (session);
500 g_debug ("Stopping session that failed authentication");
501 session_stop (session);
506 session_stopped_cb (Session *session, Seat *seat)
508 DisplayServer *display_server;
510 g_debug ("Session stopped");
512 display_server = session_get_display_server (session);
515 if (!IS_GREETER (session))
518 script = seat_get_string_property (seat, "session-cleanup-script");
520 run_script (seat, display_server, script, session_get_user (session));
523 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
524 seat->priv->sessions = g_list_remove (seat->priv->sessions, session);
526 /* We were waiting for this session, but it didn't start :( */
527 // FIXME: Start a greeter on this?
528 if (session == seat->priv->session_to_activate)
530 g_object_unref (seat->priv->session_to_activate);
531 seat->priv->session_to_activate = NULL;
534 if (seat->priv->stopping)
536 check_stopped (seat);
537 g_object_unref (session);
541 /* If this is the greeter session then re-use this display server */
542 if (IS_GREETER (session) && seat->priv->share_display_server &&
543 greeter_get_start_session (GREETER (session)))
547 for (link = seat->priv->sessions; link; link = link->next)
549 Session *s = link->data;
551 /* Skip this session and sessions on other display servers */
552 if (s == session || session_get_display_server (s) != display_server || session_get_is_stopping (s))
555 if (session_get_is_authenticated (s))
557 g_debug ("Greeter stopped, running session");
558 run_session (seat, s);
562 g_debug ("Greeter stopped, starting session authentication");
563 start_session (seat, s);
568 /* If this is the greeter and nothing else is running then stop the seat */
569 else if (IS_GREETER (session) &&
570 !greeter_get_start_session (GREETER (session)) &&
571 g_list_length (seat->priv->display_servers) == 1 &&
572 g_list_nth_data (seat->priv->display_servers, 0) == display_server)
574 g_debug ("Stopping seat, failed to start a greeter");
577 /* If we were the active session, switch to a greeter */
578 else if (!IS_GREETER (session) && session == seat_get_active_session (seat))
580 g_debug ("Active session stopped, starting greeter");
581 seat_switch_to_greeter (seat);
584 /* Stop the display server if no-longer required */
585 if (display_server && !display_server_get_is_stopping (display_server))
590 for (link = seat->priv->sessions; link; link = link->next)
592 Session *s = link->data;
595 if (session_get_display_server (s) == display_server)
600 g_debug ("Stopping display server, no sessions require it");
601 display_server_stop (display_server);
605 g_object_unref (session);
609 set_session_env (Session *session)
611 /* Variables required for regression tests */
612 if (g_getenv ("LIGHTDM_TEST_ROOT"))
614 session_set_env (session, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
615 session_set_env (session, "DBUS_SYSTEM_BUS_ADDRESS", g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
616 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
617 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
618 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
619 session_set_env (session, "GI_TYPELIB_PATH", g_getenv ("GI_TYPELIB_PATH"));
624 create_session (Seat *seat, gboolean autostart)
628 session = SEAT_GET_CLASS (seat)->create_session (seat);
629 seat->priv->sessions = g_list_append (seat->priv->sessions, session);
631 g_signal_connect (session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
632 g_signal_connect (session, "stopped", G_CALLBACK (session_stopped_cb), seat);
634 set_session_env (session);
640 get_session_argv_from_filename (const gchar *filename, const gchar *session_wrapper)
642 GKeyFile *session_desktop_file;
645 gchar *command = NULL, **argv, *path;
646 GError *error = NULL;
648 /* Read the command from the .desktop file */
649 session_desktop_file = g_key_file_new ();
650 result = g_key_file_load_from_file (session_desktop_file, filename, G_KEY_FILE_NONE, &error);
652 g_debug ("Failed to load session file %s: %s", filename, error->message);
653 g_clear_error (&error);
656 command = g_key_file_get_string (session_desktop_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_EXEC, NULL);
658 g_debug ("No command in session file %s", filename);
660 g_key_file_free (session_desktop_file);
665 /* If configured, run sessions through a wrapper */
668 argv = g_malloc (sizeof (gchar *) * 3);
669 path = g_find_program_in_path (session_wrapper);
670 argv[0] = path ? path : g_strdup (session_wrapper);
676 /* Split command into an array listing and make command absolute */
677 result = g_shell_parse_argv (command, &argc, &argv, &error);
679 g_debug ("Invalid session command '%s': %s", command, error->message);
680 g_clear_error (&error);
684 path = g_find_program_in_path (argv[0]);
695 get_session_argv (const gchar *sessions_dir, const gchar *session_name, const gchar *session_wrapper)
697 gchar **dirs, **argv;
700 g_return_val_if_fail (sessions_dir != NULL, NULL);
701 g_return_val_if_fail (session_name != NULL, NULL);
703 dirs = g_strsplit (sessions_dir, ":", -1);
704 for (i = 0; dirs[i]; i++)
706 gchar *filename, *path;
708 filename = g_strdup_printf ("%s.desktop", session_name);
709 path = g_build_filename (dirs[i], filename, NULL);
711 argv = get_session_argv_from_filename (path, session_wrapper);
722 create_user_session (Seat *seat, const gchar *username)
725 gchar *sessions_dir, **argv;
726 const gchar *session_name;
729 user = accounts_get_user_by_name (username);
732 g_debug ("Can't login unknown user '%s'", username);
736 session_name = user_get_xsession (user);
737 g_object_unref (user);
739 session_name = seat_get_string_property (seat, "user-session");
740 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
741 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
742 g_free (sessions_dir);
745 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
749 session = create_session (seat, TRUE);
750 session_set_pam_service (session, AUTOLOGIN_SERVICE);
751 session_set_username (session, username);
752 session_set_do_authenticate (session, TRUE);
753 session_set_argv (session, argv);
759 create_guest_session (Seat *seat)
761 gchar *sessions_dir, **argv;
764 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
765 argv = get_session_argv (sessions_dir,
766 seat_get_string_property (seat, "user-session"),
767 seat_get_string_property (seat, "session-wrapper"));
768 g_free (sessions_dir);
771 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
775 session = create_session (seat, TRUE);
776 session_set_do_authenticate (session, TRUE);
777 session_set_is_guest (session, TRUE);
778 session_set_argv (session, argv);
784 greeter_create_session_cb (Greeter *greeter, Seat *seat)
788 session = create_session (seat, FALSE);
789 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
791 return g_object_ref (session);
795 prepend_argv (gchar ***argv, const gchar *value)
797 gchar **old_argv, **new_argv;
801 new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
802 new_argv[0] = g_strdup (value);
803 for (i = 0; old_argv[i]; i++)
804 new_argv[i + 1] = old_argv[i];
805 new_argv[i + 1] = NULL;
812 find_user_session (Seat *seat, const gchar *username)
819 for (link = seat->priv->sessions; link; link = link->next)
821 Session *session = link->data;
823 if (!session_get_is_stopping (session) && strcmp (session_get_username (session), username) == 0)
831 greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Seat *seat)
833 Session *session, *existing_session;
834 const gchar *username;
836 gchar *sessions_dir = NULL;
839 /* Get the session to use */
840 if (greeter_get_guest_authenticated (greeter))
842 session = create_guest_session (seat);
843 session_set_pam_service (session, AUTOLOGIN_SERVICE);
846 session = greeter_get_authentication_session (greeter);
848 /* Switch to this session when it is ready */
849 if (seat->priv->session_to_activate)
850 g_object_unref (seat->priv->session_to_activate);
851 seat->priv->session_to_activate = g_object_ref (session);
853 /* Return to existing session if it is open */
854 username = session_get_username (session);
855 existing_session = find_user_session (seat, username);
856 if (existing_session && session != existing_session)
858 g_debug ("Returning to existing user session %s", username);
859 session_stop (session);
860 seat_set_active_session (seat, existing_session);
864 /* Get session command to run */
867 case SESSION_TYPE_LOCAL:
868 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
870 case SESSION_TYPE_REMOTE:
871 sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
874 user = session_get_user (session);
875 if (!session_name && user)
876 session_name = user_get_xsession (user);
878 session_name = seat_get_string_property (seat, "user-session");
880 user_set_xsession (session_get_user (session), session_name);
881 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
882 g_free (sessions_dir);
886 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
890 session_set_argv (session, argv);
893 /* If no session information found, then can't start the session */
896 g_debug ("Can't find greeter session '%s'", session_name);
900 /* If can re-use the display server, stop the greeter first */
901 if (seat->priv->share_display_server)
903 /* Run on the same display server after the greeter has stopped */
904 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
906 g_debug ("Stopping greeter");
907 session_stop (SESSION (greeter));
911 /* Otherwise start a new display server for this session */
914 DisplayServer *display_server;
916 display_server = create_display_server (seat);
917 if (!display_server_start (display_server))
920 session_set_display_server (session, display_server);
927 create_greeter_session (Seat *seat)
929 gchar *sessions_dir, **argv;
930 Greeter *greeter_session;
932 const gchar *greeter_wrapper;
934 sessions_dir = config_get_string (config_get_instance (), "LightDM", "greeters-directory");
935 argv = get_session_argv (sessions_dir,
936 seat_get_string_property (seat, "greeter-session"),
937 seat_get_string_property (seat, "session-wrapper"));
938 g_free (sessions_dir);
942 greeter_wrapper = seat_get_string_property (seat, "greeter-wrapper");
946 path = g_find_program_in_path (greeter_wrapper);
947 prepend_argv (&argv, path ? path : greeter_wrapper);
951 greeter_session = SEAT_GET_CLASS (seat)->create_greeter_session (seat);
952 seat->priv->sessions = g_list_append (seat->priv->sessions, SESSION (greeter_session));
953 g_signal_connect (greeter_session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
954 g_signal_connect (greeter_session, "stopped", G_CALLBACK (session_stopped_cb), seat);
956 set_session_env (SESSION (greeter_session));
958 session_set_pam_service (SESSION (greeter_session), GREETER_SERVICE);
959 greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
960 session_set_username (SESSION (greeter_session), greeter_user);
961 g_free (greeter_user);
962 session_set_argv (SESSION (greeter_session), argv);
964 greeter_set_pam_services (greeter_session, USER_SERVICE, AUTOLOGIN_SERVICE);
965 greeter_set_allow_guest (greeter_session, seat_get_allow_guest (seat));
966 g_signal_connect (greeter_session, "create-session", G_CALLBACK (greeter_create_session_cb), seat);
967 g_signal_connect (greeter_session, "start-session", G_CALLBACK (greeter_start_session_cb), seat);
969 return greeter_session;
973 find_session_for_display_server (Seat *seat, DisplayServer *display_server)
977 for (link = seat->priv->sessions; link; link = link->next)
979 Session *session = link->data;
980 if (session_get_display_server (session) == display_server && !session_get_is_stopping (session))
988 display_server_ready_cb (DisplayServer *display_server, Seat *seat)
993 /* Run setup script */
994 script = seat_get_string_property (seat, "display-setup-script");
995 if (script && !run_script (seat, display_server, script, NULL))
997 g_debug ("Stopping display server due to failed setup script");
998 display_server_stop (display_server);
1002 emit_upstart_signal ("login-session-start");
1004 /* Start the session waiting for this display server */
1005 session = find_session_for_display_server (seat, display_server);
1008 if (session_get_is_authenticated (session))
1010 g_debug ("Display server ready, running session");
1011 run_session (seat, session);
1015 g_debug ("Display server ready, starting session authentication");
1016 start_session (seat, session);
1021 g_debug ("Stopping not required display server");
1022 display_server_stop (display_server);
1026 static DisplayServer *
1027 create_display_server (Seat *seat)
1029 DisplayServer *display_server;
1031 display_server = SEAT_GET_CLASS (seat)->create_display_server (seat);
1032 seat->priv->display_servers = g_list_append (seat->priv->display_servers, display_server);
1033 g_signal_connect (display_server, "ready", G_CALLBACK (display_server_ready_cb), seat);
1034 g_signal_connect (display_server, "stopped", G_CALLBACK (display_server_stopped_cb), seat);
1036 return display_server;
1040 find_greeter_session (Seat *seat)
1044 for (link = seat->priv->sessions; link; link = link->next)
1046 Session *session = link->data;
1047 if (!session_get_is_stopping (session) && IS_GREETER (session))
1048 return GREETER (session);
1055 seat_switch_to_greeter (Seat *seat)
1057 Greeter *greeter_session;
1058 DisplayServer *display_server;
1060 g_return_val_if_fail (seat != NULL, FALSE);
1062 if (!seat->priv->can_switch)
1065 /* Switch to greeter if one open (shouldn't be though) */
1066 greeter_session = find_greeter_session (seat);
1067 if (greeter_session)
1069 g_debug ("Switching to existing greeter");
1070 seat_set_active_session (seat, SESSION (greeter_session));
1074 greeter_session = create_greeter_session (seat);
1075 if (seat->priv->session_to_activate)
1076 g_object_unref (seat->priv->session_to_activate);
1077 seat->priv->session_to_activate = g_object_ref (greeter_session);
1079 display_server = create_display_server (seat);
1080 session_set_display_server (SESSION (greeter_session), display_server);
1081 if (!display_server_start (display_server))
1088 seat_switch_to_user (Seat *seat, const gchar *username, const gchar *session_name)
1091 DisplayServer *display_server;
1093 g_return_val_if_fail (seat != NULL, FALSE);
1094 g_return_val_if_fail (username != NULL, FALSE);
1096 if (!seat->priv->can_switch)
1099 g_debug ("Switching to user %s", username);
1101 session = find_user_session (seat, username);
1104 g_debug ("Switching to existing user session %s", username);
1105 seat_set_active_session (seat, session);
1109 session = create_user_session (seat, username);
1110 if (seat->priv->session_to_activate)
1111 g_object_unref (seat->priv->session_to_activate);
1112 seat->priv->session_to_activate = g_object_ref (session);
1113 session_set_pam_service (session, USER_SERVICE);
1115 display_server = create_display_server (seat);
1116 session_set_display_server (session, display_server);
1117 if (!display_server_start (display_server))
1124 find_guest_session (Seat *seat)
1128 for (link = seat->priv->sessions; link; link = link->next)
1130 Session *session = link->data;
1131 if (!session_get_is_stopping (session) && session_get_is_guest (session))
1139 seat_switch_to_guest (Seat *seat, const gchar *session_name)
1142 DisplayServer *display_server;
1145 g_return_val_if_fail (seat != NULL, FALSE);
1147 if (!seat->priv->can_switch || !seat_get_allow_guest (seat))
1150 /* Switch to session if one open */
1151 session = find_guest_session (seat);
1154 g_debug ("Switching to existing guest account %s", session_get_username (session));
1155 seat_set_active_session (seat, session);
1159 display_server = create_display_server (seat);
1160 if (!display_server_start (display_server))
1163 session = create_guest_session (seat);
1164 if (seat->priv->session_to_activate)
1165 g_object_unref (seat->priv->session_to_activate);
1166 seat->priv->session_to_activate = g_object_ref (session);
1167 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1168 session_set_display_server (session, display_server);
1174 seat_lock (Seat *seat, const gchar *username)
1176 Greeter *greeter_session;
1177 DisplayServer *display_server;
1179 g_return_val_if_fail (seat != NULL, FALSE);
1181 if (!seat->priv->can_switch)
1184 g_debug ("Locking seat");
1186 /* Switch to greeter if one open (shouldn't be though) */
1187 greeter_session = find_greeter_session (seat);
1188 if (greeter_session)
1190 g_debug ("Switching to existing greeter");
1191 seat_set_active_session (seat, SESSION (greeter_session));
1195 display_server = create_display_server (seat);
1196 if (!display_server_start (display_server))
1199 greeter_session = create_greeter_session (seat);
1200 if (seat->priv->session_to_activate)
1201 g_object_unref (seat->priv->session_to_activate);
1202 seat->priv->session_to_activate = g_object_ref (greeter_session);
1203 greeter_set_hint (greeter_session, "lock-screen", "true");
1205 greeter_set_hint (greeter_session, "select-user", username);
1206 session_set_display_server (SESSION (greeter_session), display_server);
1212 seat_stop (Seat *seat)
1214 g_return_if_fail (seat != NULL);
1216 if (seat->priv->stopping)
1219 g_debug ("Stopping seat");
1220 seat->priv->stopping = TRUE;
1221 SEAT_GET_CLASS (seat)->stop (seat);
1225 seat_get_is_stopping (Seat *seat)
1227 g_return_val_if_fail (seat != NULL, FALSE);
1228 return seat->priv->stopping;
1232 seat_real_setup (Seat *seat)
1237 seat_real_start (Seat *seat)
1239 const gchar *autologin_username;
1240 int autologin_timeout;
1241 gboolean autologin_guest;
1242 gboolean autologin_in_background;
1243 const gchar *user_session;
1244 Session *session = NULL;
1245 DisplayServer *display_server;
1247 gchar *sessions_dir;
1248 const gchar *wrapper = NULL;
1249 const gchar *session_name = NULL;
1251 g_debug ("Starting seat");
1253 display_server = create_display_server (seat);
1255 /* Get autologin settings */
1256 autologin_username = seat_get_string_property (seat, "autologin-user");
1257 if (g_strcmp0 (autologin_username, "") == 0)
1258 autologin_username = NULL;
1259 autologin_timeout = seat_get_integer_property (seat, "autologin-user-timeout");
1260 autologin_guest = seat_get_boolean_property (seat, "autologin-guest");
1261 autologin_in_background = seat_get_boolean_property (seat, "autologin-in-background");
1263 /* Autologin if configured */
1264 if (autologin_timeout == 0 || autologin_in_background)
1266 if (autologin_guest)
1268 session = create_guest_session (seat);
1269 if (seat->priv->session_to_activate)
1270 g_object_unref (seat->priv->session_to_activate);
1271 seat->priv->session_to_activate = g_object_ref (session);
1272 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1274 else if (autologin_username != NULL)
1276 session = create_user_session (seat, autologin_username);
1277 if (seat->priv->session_to_activate)
1278 g_object_unref (seat->priv->session_to_activate);
1279 seat->priv->session_to_activate = g_object_ref (session);
1280 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1283 /* Load in background if required */
1284 if (autologin_in_background && session)
1286 DisplayServer *background_display_server;
1288 background_display_server = create_display_server (seat);
1289 session_set_display_server (session, background_display_server);
1290 if (!display_server_start (background_display_server))
1293 /* Start a greeter as well */
1298 /* Fallback to a greeter */
1301 Greeter *greeter_session;
1303 greeter_session = create_greeter_session (seat);
1304 if (seat->priv->session_to_activate)
1305 g_object_unref (seat->priv->session_to_activate);
1306 seat->priv->session_to_activate = g_object_ref (greeter_session);
1307 session = SESSION (greeter_session);
1309 if (autologin_timeout)
1313 value = g_strdup_printf ("%d", autologin_timeout);
1314 greeter_set_hint (greeter_session, "autologin-timeout", value);
1316 if (autologin_username)
1317 greeter_set_hint (greeter_session, "autologin-user", autologin_username);
1318 if (autologin_guest)
1319 greeter_set_hint (greeter_session, "autologin-guest", "true");
1323 /* Fail if can't start a session */
1330 /* Start display server to show session on */
1331 session_set_display_server (session, display_server);
1332 if (!display_server_start (display_server))
1339 seat_real_set_active_session (Seat *seat, Session *session)
1344 seat_real_get_active_session (Seat *seat)
1350 seat_real_stop (Seat *seat)
1354 check_stopped (seat);
1355 if (seat->priv->stopped)
1358 /* Stop all the display servers and sessions on the seat. Copy the list as
1359 * it might be modified if a display server / session stops during this loop */
1360 list = g_list_copy (seat->priv->display_servers);
1361 for (link = list; link; link = link->next)
1363 DisplayServer *display_server = link->data;
1364 if (!display_server_get_is_stopping (display_server))
1366 g_debug ("Stopping display server");
1367 display_server_stop (display_server);
1371 list = g_list_copy (seat->priv->sessions);
1372 for (link = list; link; link = link->next)
1374 Session *session = link->data;
1375 if (!session_get_is_stopping (session))
1377 g_debug ("Stopping session");
1378 session_stop (session);
1385 seat_init (Seat *seat)
1387 seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_TYPE, SeatPrivate);
1388 seat->priv->properties = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1389 seat->priv->share_display_server = TRUE;
1393 seat_finalize (GObject *object)
1398 self = SEAT (object);
1400 g_hash_table_unref (self->priv->properties);
1401 for (link = self->priv->display_servers; link; link = link->next)
1403 DisplayServer *display_server = link->data;
1404 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1406 g_list_free_full (self->priv->display_servers, g_object_unref);
1407 for (link = self->priv->sessions; link; link = link->next)
1409 Session *session = link->data;
1410 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1412 g_list_free_full (self->priv->sessions, g_object_unref);
1413 if (self->priv->session_to_activate)
1414 g_object_unref (self->priv->session_to_activate);
1416 G_OBJECT_CLASS (seat_parent_class)->finalize (object);
1420 seat_class_init (SeatClass *klass)
1422 GObjectClass *object_class = G_OBJECT_CLASS (klass);
1424 klass->setup = seat_real_setup;
1425 klass->start = seat_real_start;
1426 klass->set_active_session = seat_real_set_active_session;
1427 klass->get_active_session = seat_real_get_active_session;
1428 klass->run_script = seat_real_run_script;
1429 klass->stop = seat_real_stop;
1431 object_class->finalize = seat_finalize;
1433 g_type_class_add_private (klass, sizeof (SeatPrivate));
1435 signals[SESSION_ADDED] =
1436 g_signal_new ("session-added",
1437 G_TYPE_FROM_CLASS (klass),
1439 G_STRUCT_OFFSET (SeatClass, session_added),
1441 g_cclosure_marshal_VOID__OBJECT,
1442 G_TYPE_NONE, 1, SESSION_TYPE);
1443 signals[SESSION_REMOVED] =
1444 g_signal_new ("session-removed",
1445 G_TYPE_FROM_CLASS (klass),
1447 G_STRUCT_OFFSET (SeatClass, session_removed),
1449 g_cclosure_marshal_VOID__OBJECT,
1450 G_TYPE_NONE, 1, SESSION_TYPE);
1452 g_signal_new ("stopped",
1453 G_TYPE_FROM_CLASS (klass),
1455 G_STRUCT_OFFSET (SeatClass, stopped),
1457 g_cclosure_marshal_VOID__VOID,