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 (session_get_is_guest (session))
376 greeter_set_hint (greeter_session, "select-guest", "true");
378 greeter_set_hint (greeter_session, "select-user", session_get_username (session));
379 if (seat->priv->session_to_activate)
380 g_object_unref (seat->priv->session_to_activate);
381 seat->priv->session_to_activate = g_object_ref (greeter_session);
383 if (seat->priv->share_display_server)
384 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
387 DisplayServer *display_server;
389 display_server = create_display_server (seat);
390 if (!display_server_start (display_server))
392 g_debug ("Failed to start display server for greeter");
396 session_set_display_server (session, display_server);
399 start_session (seat, SESSION (greeter_session));
403 run_session (Seat *seat, Session *session)
407 if (IS_GREETER (session))
408 script = seat_get_string_property (seat, "greeter-setup-script");
410 script = seat_get_string_property (seat, "session-setup-script");
411 if (script && !run_script (seat, session_get_display_server (session), script, NULL))
413 Greeter *greeter_session;
415 g_debug ("Switching to greeter due to failed setup script");
417 greeter_session = create_greeter_session (seat);
418 if (seat->priv->session_to_activate)
419 g_object_unref (seat->priv->session_to_activate);
420 seat->priv->session_to_activate = g_object_ref (greeter_session);
422 if (seat->priv->share_display_server)
423 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
426 DisplayServer *display_server;
428 display_server = create_display_server (seat);
429 if (!display_server_start (display_server))
431 g_debug ("Failed to start display server for greeter");
435 session_set_display_server (SESSION (greeter_session), display_server);
438 start_session (seat, SESSION (greeter_session));
440 /* Stop failed session */
441 session_stop (session);
446 session_run (session);
448 // FIXME: Wait until the session is ready
450 if (session == seat->priv->session_to_activate)
452 seat_set_active_session (seat, session);
453 g_object_unref (seat->priv->session_to_activate);
454 seat->priv->session_to_activate = NULL;
459 session_authentication_complete_cb (Session *session, Seat *seat)
461 if (session_get_is_authenticated (session))
463 g_debug ("Session authenticated, running command");
464 run_session (seat, session);
466 else if (!IS_GREETER (session))
468 Greeter *greeter_session;
470 g_debug ("Switching to greeter due to failed authentication");
472 greeter_session = create_greeter_session (seat);
473 if (seat->priv->session_to_activate)
474 g_object_unref (seat->priv->session_to_activate);
475 seat->priv->session_to_activate = g_object_ref (greeter_session);
476 if (session_get_is_guest (session))
477 greeter_set_hint (greeter_session, "select-guest", "true");
479 greeter_set_hint (greeter_session, "select-user", session_get_username (session));
481 if (seat->priv->share_display_server)
482 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
485 DisplayServer *display_server;
487 display_server = create_display_server (seat);
488 if (!display_server_start (display_server))
490 g_debug ("Failed to start display server for greeter");
494 session_set_display_server (SESSION (greeter_session), display_server);
497 start_session (seat, SESSION (greeter_session));
499 /* Stop failed session */
500 session_stop (session);
504 g_debug ("Stopping session that failed authentication");
505 session_stop (session);
510 session_stopped_cb (Session *session, Seat *seat)
512 DisplayServer *display_server;
514 g_debug ("Session stopped");
516 display_server = session_get_display_server (session);
519 if (!IS_GREETER (session))
522 script = seat_get_string_property (seat, "session-cleanup-script");
524 run_script (seat, display_server, script, session_get_user (session));
527 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
528 seat->priv->sessions = g_list_remove (seat->priv->sessions, session);
530 /* We were waiting for this session, but it didn't start :( */
531 // FIXME: Start a greeter on this?
532 if (session == seat->priv->session_to_activate)
534 g_object_unref (seat->priv->session_to_activate);
535 seat->priv->session_to_activate = NULL;
538 if (seat->priv->stopping)
540 check_stopped (seat);
541 g_object_unref (session);
545 /* If this is the greeter session then re-use this display server */
546 if (IS_GREETER (session) && seat->priv->share_display_server &&
547 greeter_get_start_session (GREETER (session)))
551 for (link = seat->priv->sessions; link; link = link->next)
553 Session *s = link->data;
555 /* Skip this session and sessions on other display servers */
556 if (s == session || session_get_display_server (s) != display_server || session_get_is_stopping (s))
559 if (session_get_is_authenticated (s))
561 g_debug ("Greeter stopped, running session");
562 run_session (seat, s);
566 g_debug ("Greeter stopped, starting session authentication");
567 start_session (seat, s);
572 /* If this is the greeter and nothing else is running then stop the seat */
573 else if (IS_GREETER (session) &&
574 !greeter_get_start_session (GREETER (session)) &&
575 g_list_length (seat->priv->display_servers) == 1 &&
576 g_list_nth_data (seat->priv->display_servers, 0) == display_server)
578 g_debug ("Stopping seat, failed to start a greeter");
581 /* If we were the active session, switch to a greeter */
582 else if (!IS_GREETER (session) && session == seat_get_active_session (seat))
584 g_debug ("Active session stopped, starting greeter");
585 seat_switch_to_greeter (seat);
588 /* Stop the display server if no-longer required */
589 if (display_server && !display_server_get_is_stopping (display_server))
594 for (link = seat->priv->sessions; link; link = link->next)
596 Session *s = link->data;
599 if (session_get_display_server (s) == display_server)
604 g_debug ("Stopping display server, no sessions require it");
605 display_server_stop (display_server);
609 g_object_unref (session);
613 set_session_env (Session *session)
615 /* Variables required for regression tests */
616 if (g_getenv ("LIGHTDM_TEST_ROOT"))
618 session_set_env (session, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
619 session_set_env (session, "DBUS_SYSTEM_BUS_ADDRESS", g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
620 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
621 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
622 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
623 session_set_env (session, "GI_TYPELIB_PATH", g_getenv ("GI_TYPELIB_PATH"));
628 create_session (Seat *seat, gboolean autostart)
632 session = SEAT_GET_CLASS (seat)->create_session (seat);
633 seat->priv->sessions = g_list_append (seat->priv->sessions, session);
635 g_signal_connect (session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
636 g_signal_connect (session, "stopped", G_CALLBACK (session_stopped_cb), seat);
638 set_session_env (session);
644 get_session_argv_from_filename (const gchar *filename, const gchar *session_wrapper)
646 GKeyFile *session_desktop_file;
649 gchar *command = NULL, **argv, *path;
650 GError *error = NULL;
652 /* Read the command from the .desktop file */
653 session_desktop_file = g_key_file_new ();
654 result = g_key_file_load_from_file (session_desktop_file, filename, G_KEY_FILE_NONE, &error);
656 g_debug ("Failed to load session file %s: %s", filename, error->message);
657 g_clear_error (&error);
660 command = g_key_file_get_string (session_desktop_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_EXEC, NULL);
662 g_debug ("No command in session file %s", filename);
664 g_key_file_free (session_desktop_file);
669 /* If configured, run sessions through a wrapper */
672 argv = g_malloc (sizeof (gchar *) * 3);
673 path = g_find_program_in_path (session_wrapper);
674 argv[0] = path ? path : g_strdup (session_wrapper);
680 /* Split command into an array listing and make command absolute */
681 result = g_shell_parse_argv (command, &argc, &argv, &error);
683 g_debug ("Invalid session command '%s': %s", command, error->message);
684 g_clear_error (&error);
688 path = g_find_program_in_path (argv[0]);
699 get_session_argv (const gchar *sessions_dir, const gchar *session_name, const gchar *session_wrapper)
701 gchar **dirs, **argv;
704 g_return_val_if_fail (sessions_dir != NULL, NULL);
705 g_return_val_if_fail (session_name != NULL, NULL);
707 dirs = g_strsplit (sessions_dir, ":", -1);
708 for (i = 0; dirs[i]; i++)
710 gchar *filename, *path;
712 filename = g_strdup_printf ("%s.desktop", session_name);
713 path = g_build_filename (dirs[i], filename, NULL);
715 argv = get_session_argv_from_filename (path, session_wrapper);
726 create_user_session (Seat *seat, const gchar *username)
729 gchar *sessions_dir, **argv;
730 const gchar *session_name;
733 user = accounts_get_user_by_name (username);
736 g_debug ("Can't login unknown user '%s'", username);
740 session_name = user_get_xsession (user);
741 g_object_unref (user);
743 session_name = seat_get_string_property (seat, "user-session");
744 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
745 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
746 g_free (sessions_dir);
749 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
753 session = create_session (seat, TRUE);
754 session_set_pam_service (session, AUTOLOGIN_SERVICE);
755 session_set_username (session, username);
756 session_set_do_authenticate (session, TRUE);
757 session_set_argv (session, argv);
763 create_guest_session (Seat *seat)
765 gchar *sessions_dir, **argv;
768 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
769 argv = get_session_argv (sessions_dir,
770 seat_get_string_property (seat, "user-session"),
771 seat_get_string_property (seat, "session-wrapper"));
772 g_free (sessions_dir);
775 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
779 session = create_session (seat, TRUE);
780 session_set_do_authenticate (session, TRUE);
781 session_set_is_guest (session, TRUE);
782 session_set_argv (session, argv);
788 greeter_create_session_cb (Greeter *greeter, Seat *seat)
792 session = create_session (seat, FALSE);
793 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
795 return g_object_ref (session);
799 prepend_argv (gchar ***argv, const gchar *value)
801 gchar **old_argv, **new_argv;
805 new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
806 new_argv[0] = g_strdup (value);
807 for (i = 0; old_argv[i]; i++)
808 new_argv[i + 1] = old_argv[i];
809 new_argv[i + 1] = NULL;
816 find_user_session (Seat *seat, const gchar *username)
823 for (link = seat->priv->sessions; link; link = link->next)
825 Session *session = link->data;
827 if (!session_get_is_stopping (session) && strcmp (session_get_username (session), username) == 0)
835 greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Seat *seat)
837 Session *session, *existing_session;
838 const gchar *username;
840 gchar *sessions_dir = NULL;
843 /* Get the session to use */
844 if (greeter_get_guest_authenticated (greeter))
846 session = create_guest_session (seat);
847 session_set_pam_service (session, AUTOLOGIN_SERVICE);
850 session = greeter_get_authentication_session (greeter);
852 /* Switch to this session when it is ready */
853 if (seat->priv->session_to_activate)
854 g_object_unref (seat->priv->session_to_activate);
855 seat->priv->session_to_activate = g_object_ref (session);
857 /* Return to existing session if it is open */
858 username = session_get_username (session);
859 existing_session = find_user_session (seat, username);
860 if (existing_session && session != existing_session)
862 g_debug ("Returning to existing user session %s", username);
863 session_stop (session);
864 seat_set_active_session (seat, existing_session);
868 /* Get session command to run */
871 case SESSION_TYPE_LOCAL:
872 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
874 case SESSION_TYPE_REMOTE:
875 sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
878 user = session_get_user (session);
879 if (!session_name && user)
880 session_name = user_get_xsession (user);
882 session_name = seat_get_string_property (seat, "user-session");
884 user_set_xsession (session_get_user (session), session_name);
885 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
886 g_free (sessions_dir);
890 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
894 session_set_argv (session, argv);
897 /* If no session information found, then can't start the session */
900 g_debug ("Can't find greeter session '%s'", session_name);
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);
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 Greeter *greeter_session;
936 const gchar *greeter_wrapper;
938 sessions_dir = config_get_string (config_get_instance (), "LightDM", "greeters-directory");
939 argv = get_session_argv (sessions_dir,
940 seat_get_string_property (seat, "greeter-session"),
941 seat_get_string_property (seat, "session-wrapper"));
942 g_free (sessions_dir);
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 seat->priv->sessions = g_list_append (seat->priv->sessions, SESSION (greeter_session));
957 g_signal_connect (greeter_session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
958 g_signal_connect (greeter_session, "stopped", G_CALLBACK (session_stopped_cb), seat);
960 set_session_env (SESSION (greeter_session));
962 session_set_pam_service (SESSION (greeter_session), GREETER_SERVICE);
963 greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
964 session_set_username (SESSION (greeter_session), greeter_user);
965 g_free (greeter_user);
966 session_set_argv (SESSION (greeter_session), argv);
968 greeter_set_pam_services (greeter_session, USER_SERVICE, AUTOLOGIN_SERVICE);
969 greeter_set_allow_guest (greeter_session, seat_get_allow_guest (seat));
970 g_signal_connect (greeter_session, "create-session", G_CALLBACK (greeter_create_session_cb), seat);
971 g_signal_connect (greeter_session, "start-session", G_CALLBACK (greeter_start_session_cb), seat);
973 return greeter_session;
977 find_session_for_display_server (Seat *seat, DisplayServer *display_server)
981 for (link = seat->priv->sessions; link; link = link->next)
983 Session *session = link->data;
984 if (session_get_display_server (session) == display_server && !session_get_is_stopping (session))
992 display_server_ready_cb (DisplayServer *display_server, Seat *seat)
997 /* Run setup script */
998 script = seat_get_string_property (seat, "display-setup-script");
999 if (script && !run_script (seat, display_server, script, NULL))
1001 g_debug ("Stopping display server due to failed setup script");
1002 display_server_stop (display_server);
1006 emit_upstart_signal ("login-session-start");
1008 /* Start the session waiting for this display server */
1009 session = find_session_for_display_server (seat, display_server);
1012 if (session_get_is_authenticated (session))
1014 g_debug ("Display server ready, running session");
1015 run_session (seat, session);
1019 g_debug ("Display server ready, starting session authentication");
1020 start_session (seat, session);
1025 g_debug ("Stopping not required display server");
1026 display_server_stop (display_server);
1030 static DisplayServer *
1031 create_display_server (Seat *seat)
1033 DisplayServer *display_server;
1035 display_server = SEAT_GET_CLASS (seat)->create_display_server (seat);
1036 seat->priv->display_servers = g_list_append (seat->priv->display_servers, display_server);
1037 g_signal_connect (display_server, "ready", G_CALLBACK (display_server_ready_cb), seat);
1038 g_signal_connect (display_server, "stopped", G_CALLBACK (display_server_stopped_cb), seat);
1040 return display_server;
1044 find_greeter_session (Seat *seat)
1048 for (link = seat->priv->sessions; link; link = link->next)
1050 Session *session = link->data;
1051 if (!session_get_is_stopping (session) && IS_GREETER (session))
1052 return GREETER (session);
1059 seat_switch_to_greeter (Seat *seat)
1061 Greeter *greeter_session;
1062 DisplayServer *display_server;
1064 g_return_val_if_fail (seat != NULL, FALSE);
1066 if (!seat->priv->can_switch)
1069 /* Switch to greeter if one open (shouldn't be though) */
1070 greeter_session = find_greeter_session (seat);
1071 if (greeter_session)
1073 g_debug ("Switching to existing greeter");
1074 seat_set_active_session (seat, SESSION (greeter_session));
1078 greeter_session = create_greeter_session (seat);
1079 if (seat->priv->session_to_activate)
1080 g_object_unref (seat->priv->session_to_activate);
1081 seat->priv->session_to_activate = g_object_ref (greeter_session);
1083 display_server = create_display_server (seat);
1084 session_set_display_server (SESSION (greeter_session), display_server);
1085 if (!display_server_start (display_server))
1092 seat_switch_to_user (Seat *seat, const gchar *username, const gchar *session_name)
1095 DisplayServer *display_server;
1097 g_return_val_if_fail (seat != NULL, FALSE);
1098 g_return_val_if_fail (username != NULL, FALSE);
1100 if (!seat->priv->can_switch)
1103 g_debug ("Switching to user %s", username);
1105 session = find_user_session (seat, username);
1108 g_debug ("Switching to existing user session %s", username);
1109 seat_set_active_session (seat, session);
1113 session = create_user_session (seat, username);
1114 if (seat->priv->session_to_activate)
1115 g_object_unref (seat->priv->session_to_activate);
1116 seat->priv->session_to_activate = g_object_ref (session);
1117 session_set_pam_service (session, USER_SERVICE);
1119 display_server = create_display_server (seat);
1120 session_set_display_server (session, display_server);
1121 if (!display_server_start (display_server))
1128 find_guest_session (Seat *seat)
1132 for (link = seat->priv->sessions; link; link = link->next)
1134 Session *session = link->data;
1135 if (!session_get_is_stopping (session) && session_get_is_guest (session))
1143 seat_switch_to_guest (Seat *seat, const gchar *session_name)
1146 DisplayServer *display_server;
1149 g_return_val_if_fail (seat != NULL, FALSE);
1151 if (!seat->priv->can_switch || !seat_get_allow_guest (seat))
1154 /* Switch to session if one open */
1155 session = find_guest_session (seat);
1158 g_debug ("Switching to existing guest account %s", session_get_username (session));
1159 seat_set_active_session (seat, session);
1163 display_server = create_display_server (seat);
1164 if (!display_server_start (display_server))
1167 session = create_guest_session (seat);
1168 if (seat->priv->session_to_activate)
1169 g_object_unref (seat->priv->session_to_activate);
1170 seat->priv->session_to_activate = g_object_ref (session);
1171 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1172 session_set_display_server (session, display_server);
1178 seat_lock (Seat *seat, const gchar *username)
1180 Greeter *greeter_session;
1181 DisplayServer *display_server;
1183 g_return_val_if_fail (seat != NULL, FALSE);
1185 if (!seat->priv->can_switch)
1188 g_debug ("Locking seat");
1190 /* Switch to greeter if one open (shouldn't be though) */
1191 greeter_session = find_greeter_session (seat);
1192 if (greeter_session)
1194 g_debug ("Switching to existing greeter");
1195 seat_set_active_session (seat, SESSION (greeter_session));
1199 display_server = create_display_server (seat);
1200 if (!display_server_start (display_server))
1203 greeter_session = create_greeter_session (seat);
1204 if (seat->priv->session_to_activate)
1205 g_object_unref (seat->priv->session_to_activate);
1206 seat->priv->session_to_activate = g_object_ref (greeter_session);
1207 greeter_set_hint (greeter_session, "lock-screen", "true");
1209 greeter_set_hint (greeter_session, "select-user", username);
1210 session_set_display_server (SESSION (greeter_session), display_server);
1216 seat_stop (Seat *seat)
1218 g_return_if_fail (seat != NULL);
1220 if (seat->priv->stopping)
1223 g_debug ("Stopping seat");
1224 seat->priv->stopping = TRUE;
1225 SEAT_GET_CLASS (seat)->stop (seat);
1229 seat_get_is_stopping (Seat *seat)
1231 g_return_val_if_fail (seat != NULL, FALSE);
1232 return seat->priv->stopping;
1236 seat_real_setup (Seat *seat)
1241 seat_real_start (Seat *seat)
1243 const gchar *autologin_username;
1244 int autologin_timeout;
1245 gboolean autologin_guest;
1246 gboolean autologin_in_background;
1247 const gchar *user_session;
1248 Session *session = NULL;
1249 DisplayServer *display_server;
1251 gchar *sessions_dir;
1252 const gchar *wrapper = NULL;
1253 const gchar *session_name = NULL;
1255 g_debug ("Starting seat");
1257 display_server = create_display_server (seat);
1259 /* Get autologin settings */
1260 autologin_username = seat_get_string_property (seat, "autologin-user");
1261 if (g_strcmp0 (autologin_username, "") == 0)
1262 autologin_username = NULL;
1263 autologin_timeout = seat_get_integer_property (seat, "autologin-user-timeout");
1264 autologin_guest = seat_get_boolean_property (seat, "autologin-guest");
1265 autologin_in_background = seat_get_boolean_property (seat, "autologin-in-background");
1267 /* Autologin if configured */
1268 if (autologin_timeout == 0 || autologin_in_background)
1270 if (autologin_guest)
1272 session = create_guest_session (seat);
1273 if (seat->priv->session_to_activate)
1274 g_object_unref (seat->priv->session_to_activate);
1275 seat->priv->session_to_activate = g_object_ref (session);
1276 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1278 else if (autologin_username != NULL)
1280 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))
1343 seat_real_set_active_session (Seat *seat, Session *session)
1348 seat_real_get_active_session (Seat *seat)
1354 seat_real_stop (Seat *seat)
1358 check_stopped (seat);
1359 if (seat->priv->stopped)
1362 /* Stop all the display servers and sessions on the seat. Copy the list as
1363 * it might be modified if a display server / session stops during this loop */
1364 list = g_list_copy (seat->priv->display_servers);
1365 for (link = list; link; link = link->next)
1367 DisplayServer *display_server = link->data;
1368 if (!display_server_get_is_stopping (display_server))
1370 g_debug ("Stopping display server");
1371 display_server_stop (display_server);
1375 list = g_list_copy (seat->priv->sessions);
1376 for (link = list; link; link = link->next)
1378 Session *session = link->data;
1379 if (!session_get_is_stopping (session))
1381 g_debug ("Stopping session");
1382 session_stop (session);
1389 seat_init (Seat *seat)
1391 seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_TYPE, SeatPrivate);
1392 seat->priv->properties = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1393 seat->priv->share_display_server = TRUE;
1397 seat_finalize (GObject *object)
1402 self = SEAT (object);
1404 g_hash_table_unref (self->priv->properties);
1405 for (link = self->priv->display_servers; link; link = link->next)
1407 DisplayServer *display_server = link->data;
1408 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1410 g_list_free_full (self->priv->display_servers, g_object_unref);
1411 for (link = self->priv->sessions; link; link = link->next)
1413 Session *session = link->data;
1414 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1416 g_list_free_full (self->priv->sessions, g_object_unref);
1417 if (self->priv->session_to_activate)
1418 g_object_unref (self->priv->session_to_activate);
1420 G_OBJECT_CLASS (seat_parent_class)->finalize (object);
1424 seat_class_init (SeatClass *klass)
1426 GObjectClass *object_class = G_OBJECT_CLASS (klass);
1428 klass->setup = seat_real_setup;
1429 klass->start = seat_real_start;
1430 klass->set_active_session = seat_real_set_active_session;
1431 klass->get_active_session = seat_real_get_active_session;
1432 klass->run_script = seat_real_run_script;
1433 klass->stop = seat_real_stop;
1435 object_class->finalize = seat_finalize;
1437 g_type_class_add_private (klass, sizeof (SeatPrivate));
1439 signals[SESSION_ADDED] =
1440 g_signal_new ("session-added",
1441 G_TYPE_FROM_CLASS (klass),
1443 G_STRUCT_OFFSET (SeatClass, session_added),
1445 g_cclosure_marshal_VOID__OBJECT,
1446 G_TYPE_NONE, 1, SESSION_TYPE);
1447 signals[SESSION_REMOVED] =
1448 g_signal_new ("session-removed",
1449 G_TYPE_FROM_CLASS (klass),
1451 G_STRUCT_OFFSET (SeatClass, session_removed),
1453 g_cclosure_marshal_VOID__OBJECT,
1454 G_TYPE_NONE, 1, SESSION_TYPE);
1456 g_signal_new ("stopped",
1457 G_TYPE_FROM_CLASS (klass),
1459 G_STRUCT_OFFSET (SeatClass, stopped),
1461 g_cclosure_marshal_VOID__VOID,