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 // FIXME: Only if can share servers
415 greeter_session = create_greeter_session (seat);
416 if (seat->priv->session_to_activate)
417 g_object_unref (seat->priv->session_to_activate);
418 seat->priv->session_to_activate = g_object_ref (greeter_session);
419 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
421 start_session (seat, SESSION (greeter_session));
423 /* Stop failed session */
424 session_stop (session);
429 session_run (session);
431 // FIXME: Wait until the session is ready
433 if (session == seat->priv->session_to_activate)
435 seat_set_active_session (seat, session);
436 g_object_unref (seat->priv->session_to_activate);
437 seat->priv->session_to_activate = NULL;
442 session_authentication_complete_cb (Session *session, Seat *seat)
444 if (session_get_is_authenticated (session))
446 g_debug ("Session authenticated, running command");
447 run_session (seat, session);
449 else if (!IS_GREETER (session))
451 Greeter *greeter_session;
453 g_debug ("Switching to greeter due to failed authentication");
455 greeter_session = create_greeter_session (seat);
456 if (seat->priv->session_to_activate)
457 g_object_unref (seat->priv->session_to_activate);
458 seat->priv->session_to_activate = g_object_ref (greeter_session);
459 if (session_get_is_guest (session))
460 greeter_set_hint (greeter_session, "select-guest", "true");
462 greeter_set_hint (greeter_session, "select-user", session_get_username (session));
464 if (seat->priv->share_display_server)
465 session_set_display_server (SESSION (greeter_session), session_get_display_server (session));
468 DisplayServer *display_server;
470 display_server = create_display_server (seat);
471 if (!display_server_start (display_server))
473 g_debug ("Failed to start display server for greeter");
477 session_set_display_server (SESSION (greeter_session), display_server);
480 start_session (seat, SESSION (greeter_session));
482 /* Stop failed session */
483 session_stop (session);
487 g_debug ("Stopping session that failed authentication");
488 session_stop (session);
493 session_stopped_cb (Session *session, Seat *seat)
495 DisplayServer *display_server;
497 g_debug ("Session stopped");
499 display_server = session_get_display_server (session);
502 if (!IS_GREETER (session))
505 script = seat_get_string_property (seat, "session-cleanup-script");
507 run_script (seat, display_server, script, session_get_user (session));
510 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
511 seat->priv->sessions = g_list_remove (seat->priv->sessions, session);
513 /* We were waiting for this session, but it didn't start :( */
514 // FIXME: Start a greeter on this?
515 if (session == seat->priv->session_to_activate)
517 g_object_unref (seat->priv->session_to_activate);
518 seat->priv->session_to_activate = NULL;
521 if (seat->priv->stopping)
523 check_stopped (seat);
524 g_object_unref (session);
528 /* If this is the greeter session then re-use this display server */
529 if (IS_GREETER (session) && seat->priv->share_display_server &&
530 greeter_get_start_session (GREETER (session)))
534 for (link = seat->priv->sessions; link; link = link->next)
536 Session *s = link->data;
538 /* Skip this session and sessions on other display servers */
539 if (s == session || session_get_display_server (s) != display_server || session_get_is_stopping (s))
542 if (session_get_is_authenticated (s))
544 g_debug ("Greeter stopped, running session");
545 run_session (seat, s);
549 g_debug ("Greeter stopped, starting session authentication");
550 start_session (seat, s);
555 /* If this is the greeter and nothing else is running then stop the seat */
556 else if (IS_GREETER (session) &&
557 !greeter_get_start_session (GREETER (session)) &&
558 g_list_length (seat->priv->display_servers) == 1 &&
559 g_list_nth_data (seat->priv->display_servers, 0) == display_server)
561 g_debug ("Stopping seat, failed to start a greeter");
564 /* If we were the active session, switch to a greeter */
565 else if (!IS_GREETER (session) && session == seat_get_active_session (seat))
567 g_debug ("Active session stopped, starting greeter");
568 seat_switch_to_greeter (seat);
571 /* Stop the display server if no-longer required */
572 if (display_server && !display_server_get_is_stopping (display_server))
577 for (link = seat->priv->sessions; link; link = link->next)
579 Session *s = link->data;
582 if (session_get_display_server (s) == display_server)
587 g_debug ("Stopping display server, no sessions require it");
588 display_server_stop (display_server);
592 g_object_unref (session);
596 set_session_env (Session *session)
598 /* Variables required for regression tests */
599 if (g_getenv ("LIGHTDM_TEST_ROOT"))
601 session_set_env (session, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
602 session_set_env (session, "DBUS_SYSTEM_BUS_ADDRESS", g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
603 session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
604 session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
605 session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
606 session_set_env (session, "GI_TYPELIB_PATH", g_getenv ("GI_TYPELIB_PATH"));
611 create_session (Seat *seat, gboolean autostart)
615 session = SEAT_GET_CLASS (seat)->create_session (seat);
616 seat->priv->sessions = g_list_append (seat->priv->sessions, session);
618 g_signal_connect (session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
619 g_signal_connect (session, "stopped", G_CALLBACK (session_stopped_cb), seat);
621 set_session_env (session);
627 get_session_argv_from_filename (const gchar *filename, const gchar *session_wrapper)
629 GKeyFile *session_desktop_file;
632 gchar *command = NULL, **argv, *path;
633 GError *error = NULL;
635 /* Read the command from the .desktop file */
636 session_desktop_file = g_key_file_new ();
637 result = g_key_file_load_from_file (session_desktop_file, filename, G_KEY_FILE_NONE, &error);
639 g_debug ("Failed to load session file %s: %s", filename, error->message);
640 g_clear_error (&error);
643 command = g_key_file_get_string (session_desktop_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_EXEC, NULL);
645 g_debug ("No command in session file %s", filename);
647 g_key_file_free (session_desktop_file);
652 /* If configured, run sessions through a wrapper */
655 argv = g_malloc (sizeof (gchar *) * 3);
656 path = g_find_program_in_path (session_wrapper);
657 argv[0] = path ? path : g_strdup (session_wrapper);
663 /* Split command into an array listing and make command absolute */
664 result = g_shell_parse_argv (command, &argc, &argv, &error);
666 g_debug ("Invalid session command '%s': %s", command, error->message);
667 g_clear_error (&error);
671 path = g_find_program_in_path (argv[0]);
682 get_session_argv (const gchar *sessions_dir, const gchar *session_name, const gchar *session_wrapper)
684 gchar **dirs, **argv;
687 g_return_val_if_fail (sessions_dir != NULL, NULL);
688 g_return_val_if_fail (session_name != NULL, NULL);
690 dirs = g_strsplit (sessions_dir, ":", -1);
691 for (i = 0; dirs[i]; i++)
693 gchar *filename, *path;
695 filename = g_strdup_printf ("%s.desktop", session_name);
696 path = g_build_filename (dirs[i], filename, NULL);
698 argv = get_session_argv_from_filename (path, session_wrapper);
709 create_user_session (Seat *seat, const gchar *username)
712 gchar *sessions_dir, **argv;
713 const gchar *session_name;
716 user = accounts_get_user_by_name (username);
719 g_debug ("Can't login unknown user '%s'", username);
723 session_name = user_get_xsession (user);
724 g_object_unref (user);
726 session_name = seat_get_string_property (seat, "user-session");
727 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
728 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
729 g_free (sessions_dir);
732 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
736 session = create_session (seat, TRUE);
737 session_set_pam_service (session, AUTOLOGIN_SERVICE);
738 session_set_username (session, username);
739 session_set_do_authenticate (session, TRUE);
740 session_set_argv (session, argv);
746 create_guest_session (Seat *seat)
748 gchar *sessions_dir, **argv;
751 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
752 argv = get_session_argv (sessions_dir,
753 seat_get_string_property (seat, "user-session"),
754 seat_get_string_property (seat, "session-wrapper"));
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_do_authenticate (session, TRUE);
764 session_set_is_guest (session, TRUE);
765 session_set_argv (session, argv);
771 greeter_create_session_cb (Greeter *greeter, Seat *seat)
775 session = create_session (seat, FALSE);
776 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
778 return g_object_ref (session);
782 prepend_argv (gchar ***argv, const gchar *value)
784 gchar **old_argv, **new_argv;
788 new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
789 new_argv[0] = g_strdup (value);
790 for (i = 0; old_argv[i]; i++)
791 new_argv[i + 1] = old_argv[i];
792 new_argv[i + 1] = NULL;
799 find_user_session (Seat *seat, const gchar *username)
806 for (link = seat->priv->sessions; link; link = link->next)
808 Session *session = link->data;
810 if (!session_get_is_stopping (session) && strcmp (session_get_username (session), username) == 0)
818 greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Seat *seat)
820 Session *session, *existing_session;
821 const gchar *username;
823 gchar *sessions_dir = NULL;
826 /* Get the session to use */
827 if (greeter_get_guest_authenticated (greeter))
829 session = create_guest_session (seat);
830 session_set_pam_service (session, AUTOLOGIN_SERVICE);
833 session = greeter_get_authentication_session (greeter);
835 /* Switch to this session when it is ready */
836 if (seat->priv->session_to_activate)
837 g_object_unref (seat->priv->session_to_activate);
838 seat->priv->session_to_activate = g_object_ref (session);
840 /* Return to existing session if it is open */
841 username = session_get_username (session);
842 existing_session = find_user_session (seat, username);
843 if (existing_session && session != existing_session)
845 g_debug ("Returning to existing user session %s", username);
846 session_stop (session);
847 seat_set_active_session (seat, existing_session);
851 /* Get session command to run */
854 case SESSION_TYPE_LOCAL:
855 sessions_dir = config_get_string (config_get_instance (), "LightDM", "sessions-directory");
857 case SESSION_TYPE_REMOTE:
858 sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
861 user = session_get_user (session);
862 if (!session_name && user)
863 session_name = user_get_xsession (user);
865 session_name = seat_get_string_property (seat, "user-session");
867 user_set_xsession (session_get_user (session), session_name);
868 argv = get_session_argv (sessions_dir, session_name, seat_get_string_property (seat, "session-wrapper"));
869 g_free (sessions_dir);
873 g_debug ("Can't find session '%s'", seat_get_string_property (seat, "user-session"));
877 session_set_argv (session, argv);
880 /* If no session information found, then can't start the session */
883 g_debug ("Can't find greeter session '%s'", session_name);
887 /* If can re-use the display server, stop the greeter first */
888 if (seat->priv->share_display_server)
890 /* Run on the same display server after the greeter has stopped */
891 session_set_display_server (session, session_get_display_server (SESSION (greeter)));
893 g_debug ("Stopping greeter");
894 session_stop (SESSION (greeter));
898 /* Otherwise start a new display server for this session */
901 DisplayServer *display_server;
903 display_server = create_display_server (seat);
904 if (!display_server_start (display_server))
907 session_set_display_server (session, display_server);
914 create_greeter_session (Seat *seat)
916 gchar *sessions_dir, **argv;
917 Greeter *greeter_session;
919 const gchar *greeter_wrapper;
921 sessions_dir = config_get_string (config_get_instance (), "LightDM", "greeters-directory");
922 argv = get_session_argv (sessions_dir,
923 seat_get_string_property (seat, "greeter-session"),
924 seat_get_string_property (seat, "session-wrapper"));
925 g_free (sessions_dir);
929 greeter_wrapper = seat_get_string_property (seat, "greeter-wrapper");
933 path = g_find_program_in_path (greeter_wrapper);
934 prepend_argv (&argv, path ? path : greeter_wrapper);
938 greeter_session = SEAT_GET_CLASS (seat)->create_greeter_session (seat);
939 seat->priv->sessions = g_list_append (seat->priv->sessions, SESSION (greeter_session));
940 g_signal_connect (greeter_session, "authentication-complete", G_CALLBACK (session_authentication_complete_cb), seat);
941 g_signal_connect (greeter_session, "stopped", G_CALLBACK (session_stopped_cb), seat);
943 set_session_env (SESSION (greeter_session));
945 session_set_pam_service (SESSION (greeter_session), GREETER_SERVICE);
946 greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
947 session_set_username (SESSION (greeter_session), greeter_user);
948 g_free (greeter_user);
949 session_set_argv (SESSION (greeter_session), argv);
951 greeter_set_pam_services (greeter_session, USER_SERVICE, AUTOLOGIN_SERVICE);
952 greeter_set_allow_guest (greeter_session, seat_get_allow_guest (seat));
953 g_signal_connect (greeter_session, "create-session", G_CALLBACK (greeter_create_session_cb), seat);
954 g_signal_connect (greeter_session, "start-session", G_CALLBACK (greeter_start_session_cb), seat);
956 return greeter_session;
960 display_server_ready_cb (DisplayServer *display_server, Seat *seat)
964 gboolean used_display_server = FALSE;
966 /* Run setup script */
967 script = seat_get_string_property (seat, "display-setup-script");
968 if (script && !run_script (seat, display_server, script, NULL))
970 g_debug ("Stopping display server due to failed setup script");
971 display_server_stop (display_server);
975 emit_upstart_signal ("login-session-start");
977 /* Start the sessions waiting for this display server */
978 for (link = seat->priv->sessions; link; link = link->next)
980 Session *session = link->data;
982 if (session_get_display_server (session) != display_server || session_get_is_stopping (session))
985 if (session_get_is_authenticated (session))
987 g_debug ("Display server ready, running session");
988 run_session (seat, session);
992 g_debug ("Display server ready, starting session authentication");
993 // FIXME: Can modify sessions
994 start_session (seat, session);
996 used_display_server = TRUE;
999 if (!used_display_server)
1001 g_debug ("Stopping not required display server");
1002 display_server_stop (display_server);
1006 static DisplayServer *
1007 create_display_server (Seat *seat)
1009 DisplayServer *display_server;
1011 display_server = SEAT_GET_CLASS (seat)->create_display_server (seat);
1012 seat->priv->display_servers = g_list_append (seat->priv->display_servers, display_server);
1013 g_signal_connect (display_server, "ready", G_CALLBACK (display_server_ready_cb), seat);
1014 g_signal_connect (display_server, "stopped", G_CALLBACK (display_server_stopped_cb), seat);
1016 return display_server;
1020 find_greeter_session (Seat *seat)
1024 for (link = seat->priv->sessions; link; link = link->next)
1026 Session *session = link->data;
1027 if (!session_get_is_stopping (session) && IS_GREETER (session))
1028 return GREETER (session);
1035 seat_switch_to_greeter (Seat *seat)
1037 Greeter *greeter_session;
1038 DisplayServer *display_server;
1040 g_return_val_if_fail (seat != NULL, FALSE);
1042 if (!seat->priv->can_switch)
1045 /* Switch to greeter if one open (shouldn't be though) */
1046 greeter_session = find_greeter_session (seat);
1047 if (greeter_session)
1049 g_debug ("Switching to existing greeter");
1050 seat_set_active_session (seat, SESSION (greeter_session));
1054 greeter_session = create_greeter_session (seat);
1055 if (seat->priv->session_to_activate)
1056 g_object_unref (seat->priv->session_to_activate);
1057 seat->priv->session_to_activate = g_object_ref (greeter_session);
1059 display_server = create_display_server (seat);
1060 session_set_display_server (SESSION (greeter_session), display_server);
1061 if (!display_server_start (display_server))
1068 seat_switch_to_user (Seat *seat, const gchar *username, const gchar *session_name)
1071 DisplayServer *display_server;
1073 g_return_val_if_fail (seat != NULL, FALSE);
1074 g_return_val_if_fail (username != NULL, FALSE);
1076 if (!seat->priv->can_switch)
1079 g_debug ("Switching to user %s", username);
1081 session = find_user_session (seat, username);
1084 g_debug ("Switching to existing user session %s", username);
1085 seat_set_active_session (seat, session);
1089 session = create_user_session (seat, username);
1090 if (seat->priv->session_to_activate)
1091 g_object_unref (seat->priv->session_to_activate);
1092 seat->priv->session_to_activate = g_object_ref (session);
1093 session_set_pam_service (session, USER_SERVICE);
1095 display_server = create_display_server (seat);
1096 session_set_display_server (session, display_server);
1097 if (!display_server_start (display_server))
1104 find_guest_session (Seat *seat)
1108 for (link = seat->priv->sessions; link; link = link->next)
1110 Session *session = link->data;
1111 if (!session_get_is_stopping (session) && session_get_is_guest (session))
1119 seat_switch_to_guest (Seat *seat, const gchar *session_name)
1122 DisplayServer *display_server;
1125 g_return_val_if_fail (seat != NULL, FALSE);
1127 if (!seat->priv->can_switch || !seat_get_allow_guest (seat))
1130 /* Switch to session if one open */
1131 session = find_guest_session (seat);
1134 g_debug ("Switching to existing guest account %s", session_get_username (session));
1135 seat_set_active_session (seat, session);
1139 display_server = create_display_server (seat);
1140 if (!display_server_start (display_server))
1143 session = create_guest_session (seat);
1144 if (seat->priv->session_to_activate)
1145 g_object_unref (seat->priv->session_to_activate);
1146 seat->priv->session_to_activate = g_object_ref (session);
1147 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1148 session_set_display_server (session, display_server);
1154 seat_lock (Seat *seat, const gchar *username)
1156 Greeter *greeter_session;
1157 DisplayServer *display_server;
1159 g_return_val_if_fail (seat != NULL, FALSE);
1161 if (!seat->priv->can_switch)
1164 g_debug ("Locking seat");
1166 /* Switch to greeter if one open (shouldn't be though) */
1167 greeter_session = find_greeter_session (seat);
1168 if (greeter_session)
1170 g_debug ("Switching to existing greeter");
1171 seat_set_active_session (seat, SESSION (greeter_session));
1175 display_server = create_display_server (seat);
1176 if (!display_server_start (display_server))
1179 greeter_session = create_greeter_session (seat);
1180 if (seat->priv->session_to_activate)
1181 g_object_unref (seat->priv->session_to_activate);
1182 seat->priv->session_to_activate = g_object_ref (greeter_session);
1183 greeter_set_hint (greeter_session, "lock-screen", "true");
1185 greeter_set_hint (greeter_session, "select-user", username);
1186 session_set_display_server (SESSION (greeter_session), display_server);
1192 seat_stop (Seat *seat)
1194 g_return_if_fail (seat != NULL);
1196 if (seat->priv->stopping)
1199 g_debug ("Stopping seat");
1200 seat->priv->stopping = TRUE;
1201 SEAT_GET_CLASS (seat)->stop (seat);
1205 seat_get_is_stopping (Seat *seat)
1207 g_return_val_if_fail (seat != NULL, FALSE);
1208 return seat->priv->stopping;
1212 seat_real_setup (Seat *seat)
1217 seat_real_start (Seat *seat)
1219 const gchar *autologin_username;
1220 int autologin_timeout;
1221 gboolean autologin_guest;
1222 gboolean autologin_in_background;
1223 const gchar *user_session;
1224 Session *session = NULL;
1225 DisplayServer *display_server;
1227 gchar *sessions_dir;
1228 const gchar *wrapper = NULL;
1229 const gchar *session_name = NULL;
1231 g_debug ("Starting seat");
1233 display_server = create_display_server (seat);
1235 /* Get autologin settings */
1236 autologin_username = seat_get_string_property (seat, "autologin-user");
1237 if (g_strcmp0 (autologin_username, "") == 0)
1238 autologin_username = NULL;
1239 autologin_timeout = seat_get_integer_property (seat, "autologin-user-timeout");
1240 autologin_guest = seat_get_boolean_property (seat, "autologin-guest");
1241 autologin_in_background = seat_get_boolean_property (seat, "autologin-in-background");
1243 /* Autologin if configured */
1244 if (autologin_timeout == 0 || autologin_in_background)
1246 if (autologin_guest)
1248 session = create_guest_session (seat);
1249 if (seat->priv->session_to_activate)
1250 g_object_unref (seat->priv->session_to_activate);
1251 seat->priv->session_to_activate = g_object_ref (session);
1252 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1254 else if (autologin_username != NULL)
1256 session = create_user_session (seat, autologin_username);
1257 if (seat->priv->session_to_activate)
1258 g_object_unref (seat->priv->session_to_activate);
1259 seat->priv->session_to_activate = g_object_ref (session);
1260 session_set_pam_service (session, AUTOLOGIN_SERVICE);
1263 /* Load in background if required */
1264 if (autologin_in_background && session)
1266 DisplayServer *background_display_server;
1268 background_display_server = create_display_server (seat);
1269 session_set_display_server (session, background_display_server);
1270 if (!display_server_start (background_display_server))
1273 /* Start a greeter as well */
1278 /* Fallback to a greeter */
1281 Greeter *greeter_session;
1283 greeter_session = create_greeter_session (seat);
1284 if (seat->priv->session_to_activate)
1285 g_object_unref (seat->priv->session_to_activate);
1286 seat->priv->session_to_activate = g_object_ref (greeter_session);
1287 session = SESSION (greeter_session);
1289 if (autologin_timeout)
1293 value = g_strdup_printf ("%d", autologin_timeout);
1294 greeter_set_hint (greeter_session, "autologin-timeout", value);
1296 if (autologin_username)
1297 greeter_set_hint (greeter_session, "autologin-user", autologin_username);
1298 if (autologin_guest)
1299 greeter_set_hint (greeter_session, "autologin-guest", "true");
1303 /* Fail if can't start a session */
1310 /* Start display server to show session on */
1311 session_set_display_server (session, display_server);
1312 if (!display_server_start (display_server))
1319 seat_real_set_active_session (Seat *seat, Session *session)
1324 seat_real_get_active_session (Seat *seat)
1330 seat_real_stop (Seat *seat)
1334 check_stopped (seat);
1335 if (seat->priv->stopped)
1338 /* Stop all the display servers and sessions on the seat. Copy the list as
1339 * it might be modified if a display server / session stops during this loop */
1340 list = g_list_copy (seat->priv->display_servers);
1341 for (link = list; link; link = link->next)
1343 DisplayServer *display_server = link->data;
1344 if (!display_server_get_is_stopping (display_server))
1346 g_debug ("Stopping display server");
1347 display_server_stop (display_server);
1351 list = g_list_copy (seat->priv->sessions);
1352 for (link = list; link; link = link->next)
1354 Session *session = link->data;
1355 if (!session_get_is_stopping (session))
1357 g_debug ("Stopping session");
1358 session_stop (session);
1365 seat_init (Seat *seat)
1367 seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_TYPE, SeatPrivate);
1368 seat->priv->properties = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1369 seat->priv->share_display_server = TRUE;
1373 seat_finalize (GObject *object)
1378 self = SEAT (object);
1380 g_hash_table_unref (self->priv->properties);
1381 for (link = self->priv->display_servers; link; link = link->next)
1383 DisplayServer *display_server = link->data;
1384 g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1386 g_list_free_full (self->priv->display_servers, g_object_unref);
1387 for (link = self->priv->sessions; link; link = link->next)
1389 Session *session = link->data;
1390 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
1392 g_list_free_full (self->priv->sessions, g_object_unref);
1393 if (self->priv->session_to_activate)
1394 g_object_unref (self->priv->session_to_activate);
1396 G_OBJECT_CLASS (seat_parent_class)->finalize (object);
1400 seat_class_init (SeatClass *klass)
1402 GObjectClass *object_class = G_OBJECT_CLASS (klass);
1404 klass->setup = seat_real_setup;
1405 klass->start = seat_real_start;
1406 klass->set_active_session = seat_real_set_active_session;
1407 klass->get_active_session = seat_real_get_active_session;
1408 klass->run_script = seat_real_run_script;
1409 klass->stop = seat_real_stop;
1411 object_class->finalize = seat_finalize;
1413 g_type_class_add_private (klass, sizeof (SeatPrivate));
1415 signals[SESSION_ADDED] =
1416 g_signal_new ("session-added",
1417 G_TYPE_FROM_CLASS (klass),
1419 G_STRUCT_OFFSET (SeatClass, session_added),
1421 g_cclosure_marshal_VOID__OBJECT,
1422 G_TYPE_NONE, 1, SESSION_TYPE);
1423 signals[SESSION_REMOVED] =
1424 g_signal_new ("session-removed",
1425 G_TYPE_FROM_CLASS (klass),
1427 G_STRUCT_OFFSET (SeatClass, session_removed),
1429 g_cclosure_marshal_VOID__OBJECT,
1430 G_TYPE_NONE, 1, SESSION_TYPE);
1432 g_signal_new ("stopped",
1433 G_TYPE_FROM_CLASS (klass),
1435 G_STRUCT_OFFSET (SeatClass, stopped),
1437 g_cclosure_marshal_VOID__VOID,