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
18 #include <glib/gi18n.h>
24 #include "configuration.h"
25 #include "display-manager.h"
26 #include "xdmcp-server.h"
27 #include "vnc-server.h"
28 #include "seat-xdmcp-session.h"
29 #include "seat-xvnc.h"
32 #include "session-child.h"
33 #include "shared-data-manager.h"
34 #include "user-list.h"
37 static gchar *config_path = NULL;
38 static GMainLoop *loop = NULL;
39 static GTimer *log_timer;
40 static int log_fd = -1;
41 static gboolean debug = FALSE;
43 static DisplayManager *display_manager = NULL;
44 static XDMCPServer *xdmcp_server = NULL;
45 static VNCServer *vnc_server = NULL;
46 static guint bus_id = 0;
47 static GDBusConnection *bus = NULL;
48 static guint reg_id = 0;
49 static GDBusNodeInfo *seat_info;
50 static GHashTable *seat_bus_entries = NULL;
51 static guint seat_index = 0;
52 static GDBusNodeInfo *session_info;
53 static GHashTable *session_bus_entries = NULL;
54 static guint session_index = 0;
55 static gint exit_code = EXIT_SUCCESS;
69 #define LIGHTDM_BUS_NAME "org.freedesktop.DisplayManager"
71 static gboolean update_login1_seat (Login1Seat *login1_seat);
74 log_cb (const gchar *log_domain, GLogLevelFlags log_level, const gchar *message, gpointer data)
79 switch (log_level & G_LOG_LEVEL_MASK)
81 case G_LOG_LEVEL_ERROR:
84 case G_LOG_LEVEL_CRITICAL:
87 case G_LOG_LEVEL_WARNING:
90 case G_LOG_LEVEL_MESSAGE:
93 case G_LOG_LEVEL_INFO:
96 case G_LOG_LEVEL_DEBUG:
104 text = g_strdup_printf ("[%+.2fs] %s %s\n", g_timer_elapsed (log_timer, NULL), prefix, message);
106 /* Log everything to a file */
110 n_written = write (log_fd, text, strlen (text));
112 ; /* Check result so compiler doesn't warn about it */
115 /* Log to stderr if requested */
117 g_printerr ("%s", text);
119 g_log_default_handler (log_domain, log_level, message, data);
127 gchar *log_dir, *path, *old_path;
129 log_timer = g_timer_new ();
132 log_dir = config_get_string (config_get_instance (), "LightDM", "log-directory");
133 path = g_build_filename (log_dir, "lightdm.log", NULL);
136 /* Move old file out of the way */
137 old_path = g_strdup_printf ("%s.old", path);
138 rename (path, old_path);
141 /* Create new file and log to it */
142 log_fd = open (path, O_WRONLY | O_CREAT | O_TRUNC, 0600);
143 fcntl (log_fd, F_SETFD, FD_CLOEXEC);
144 g_log_set_default_handler (log_cb, NULL);
146 g_debug ("Logging to %s", path);
151 set_seat_properties (Seat *seat, const gchar *config_section)
156 keys = config_get_keys (config_get_instance (), "SeatDefaults");
157 for (i = 0; keys && keys[i]; i++)
159 gchar *value = config_get_string (config_get_instance (), "SeatDefaults", keys[i]);
160 seat_set_property (seat, keys[i], value);
167 keys = config_get_keys (config_get_instance (), config_section);
168 for (i = 0; keys && keys[i]; i++)
170 gchar *value = config_get_string (config_get_instance (), config_section, keys[i]);
171 seat_set_property (seat, keys[i], value);
179 signal_cb (Process *process, int signum)
181 g_debug ("Caught %s signal, shutting down", g_strsignal (signum));
182 display_manager_stop (display_manager);
183 // FIXME: Stop XDMCP server
187 display_manager_stopped_cb (DisplayManager *display_manager)
189 g_debug ("Stopping daemon");
190 g_main_loop_quit (loop);
194 display_manager_seat_removed_cb (DisplayManager *display_manager, Seat *seat)
198 Seat *next_seat = NULL;
201 /* If we have fallback types registered for the seat, let's try them
203 types = seat_get_string_list_property (seat, "type");
204 next_types = g_string_new ("");
205 for (iter = types; iter && *iter; iter++)
208 continue; // skip first one, that is our current seat type
212 next_seat = seat_new (*iter, seat_get_name (seat));
213 g_string_assign (next_types, *iter);
217 // Build up list of types to try next time
218 g_string_append_c (next_types, ';');
219 g_string_append (next_types, *iter);
226 gchar *config_section;
228 config_section = g_strdup_printf ("Seat:%s", seat_get_name (seat));
229 set_seat_properties (next_seat, config_section);
230 g_free (config_section);
232 // We set this manually on default seat. Let's port it over if needed.
233 if (seat_get_boolean_property (seat, "exit-on-failure"))
234 seat_set_property (next_seat, "exit-on-failure", "true");
236 seat_set_property (next_seat, "type", next_types->str);
238 display_manager_add_seat (display_manager, next_seat);
239 g_object_unref (next_seat);
241 else if (seat_get_boolean_property (seat, "exit-on-failure"))
243 g_debug ("Required seat has stopped");
244 exit_code = EXIT_FAILURE;
245 display_manager_stop (display_manager);
248 g_string_free (next_types, TRUE);
254 GVariantBuilder builder;
258 g_variant_builder_init (&builder, G_VARIANT_TYPE ("ao"));
259 g_hash_table_iter_init (&iter, seat_bus_entries);
260 while (g_hash_table_iter_next (&iter, NULL, &value))
262 SeatBusEntry *entry = value;
263 g_variant_builder_add_value (&builder, g_variant_new_object_path (entry->path));
266 return g_variant_builder_end (&builder);
270 get_session_list (const gchar *seat_path)
272 GVariantBuilder builder;
276 g_variant_builder_init (&builder, G_VARIANT_TYPE ("ao"));
278 g_hash_table_iter_init (&iter, session_bus_entries);
279 while (g_hash_table_iter_next (&iter, NULL, &value))
281 SessionBusEntry *entry = value;
282 if (seat_path == NULL || strcmp (entry->seat_path, seat_path) == 0)
283 g_variant_builder_add_value (&builder, g_variant_new_object_path (entry->path));
286 return g_variant_builder_end (&builder);
290 handle_display_manager_get_property (GDBusConnection *connection,
292 const gchar *object_path,
293 const gchar *interface_name,
294 const gchar *property_name,
298 if (g_strcmp0 (property_name, "Seats") == 0)
299 return get_seat_list ();
300 else if (g_strcmp0 (property_name, "Sessions") == 0)
301 return get_session_list (NULL);
307 handle_display_manager_call (GDBusConnection *connection,
309 const gchar *object_path,
310 const gchar *interface_name,
311 const gchar *method_name,
312 GVariant *parameters,
313 GDBusMethodInvocation *invocation,
316 if (g_strcmp0 (method_name, "AddSeat") == 0)
317 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "AddSeat is deprecated");
318 else if (g_strcmp0 (method_name, "AddLocalXSeat") == 0)
323 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(i)")))
325 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
329 g_variant_get (parameters, "(i)", &display_number);
331 g_debug ("Adding local X seat :%d", display_number);
333 seat = seat_new ("xremote", "xremote0"); // FIXME: What to use for a name?
336 gchar *display_number_string;
338 set_seat_properties (seat, NULL);
339 display_number_string = g_strdup_printf ("%d", display_number);
340 seat_set_property (seat, "xserver-display-number", display_number_string);
341 g_free (display_number_string);
346 // FIXME: Need to make proper error
347 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Unable to create local X seat");
351 if (display_manager_add_seat (display_manager, seat))
355 entry = g_hash_table_lookup (seat_bus_entries, seat);
356 g_dbus_method_invocation_return_value (invocation, g_variant_new ("(o)", entry->path));
358 else// FIXME: Need to make proper error
359 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to start seat");
360 g_object_unref (seat);
363 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD, "Unknown method");
367 handle_seat_get_property (GDBusConnection *connection,
369 const gchar *object_path,
370 const gchar *interface_name,
371 const gchar *property_name,
375 Seat *seat = user_data;
377 if (g_strcmp0 (property_name, "CanSwitch") == 0)
378 return g_variant_new_boolean (seat_get_can_switch (seat));
379 if (g_strcmp0 (property_name, "HasGuestAccount") == 0)
380 return g_variant_new_boolean (seat_get_allow_guest (seat));
381 else if (g_strcmp0 (property_name, "Sessions") == 0)
385 entry = g_hash_table_lookup (seat_bus_entries, seat);
386 return get_session_list (entry->path);
393 handle_seat_call (GDBusConnection *connection,
395 const gchar *object_path,
396 const gchar *interface_name,
397 const gchar *method_name,
398 GVariant *parameters,
399 GDBusMethodInvocation *invocation,
402 Seat *seat = user_data;
404 if (g_strcmp0 (method_name, "SwitchToGreeter") == 0)
406 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("()")))
407 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
409 if (seat_switch_to_greeter (seat))
410 g_dbus_method_invocation_return_value (invocation, NULL);
411 else// FIXME: Need to make proper error
412 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to switch to greeter");
414 else if (g_strcmp0 (method_name, "SwitchToUser") == 0)
416 const gchar *username, *session_name;
418 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(ss)")))
419 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
421 g_variant_get (parameters, "(&s&s)", &username, &session_name);
422 if (strcmp (session_name, "") == 0)
425 if (seat_switch_to_user (seat, username, session_name))
426 g_dbus_method_invocation_return_value (invocation, NULL);
427 else// FIXME: Need to make proper error
428 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to switch to user");
430 else if (g_strcmp0 (method_name, "SwitchToGuest") == 0)
432 const gchar *session_name;
434 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(s)")))
435 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
437 g_variant_get (parameters, "(&s)", &session_name);
438 if (strcmp (session_name, "") == 0)
441 if (seat_switch_to_guest (seat, session_name))
442 g_dbus_method_invocation_return_value (invocation, NULL);
443 else// FIXME: Need to make proper error
444 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to switch to guest");
446 else if (g_strcmp0 (method_name, "Lock") == 0)
448 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("()")))
449 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
451 /* FIXME: Should only allow locks if have a session on this seat */
452 if (seat_lock (seat, NULL))
453 g_dbus_method_invocation_return_value (invocation, NULL);
454 else// FIXME: Need to make proper error
455 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to lock seat");
458 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD, "Unknown method");
462 get_seat_for_session (Session *session)
466 for (seat_link = display_manager_get_seats (display_manager); seat_link; seat_link = seat_link->next)
468 Seat *seat = seat_link->data;
471 for (session_link = seat_get_sessions (seat); session_link; session_link = session_link->next)
473 Session *s = session_link->data;
484 handle_session_get_property (GDBusConnection *connection,
486 const gchar *object_path,
487 const gchar *interface_name,
488 const gchar *property_name,
492 Session *session = user_data;
493 SessionBusEntry *entry;
495 entry = g_hash_table_lookup (session_bus_entries, session);
496 if (g_strcmp0 (property_name, "Seat") == 0)
497 return g_variant_new_object_path (entry ? entry->seat_path : "");
498 else if (g_strcmp0 (property_name, "UserName") == 0)
499 return g_variant_new_string (session_get_username (session));
505 handle_session_call (GDBusConnection *connection,
507 const gchar *object_path,
508 const gchar *interface_name,
509 const gchar *method_name,
510 GVariant *parameters,
511 GDBusMethodInvocation *invocation,
514 Session *session = user_data;
516 if (g_strcmp0 (method_name, "Lock") == 0)
520 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("()")))
521 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
523 seat = get_seat_for_session (session);
524 /* FIXME: Should only allow locks if have a session on this seat */
525 seat_lock (seat, session_get_username (session));
526 g_dbus_method_invocation_return_value (invocation, NULL);
529 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD, "Unknown method");
532 static SeatBusEntry *
533 seat_bus_entry_new (const gchar *path)
537 entry = g_malloc0 (sizeof (SeatBusEntry));
538 entry->path = g_strdup (path);
543 static SessionBusEntry *
544 session_bus_entry_new (const gchar *path, const gchar *seat_path)
546 SessionBusEntry *entry;
548 entry = g_malloc0 (sizeof (SessionBusEntry));
549 entry->path = g_strdup (path);
550 entry->seat_path = g_strdup (seat_path);
556 emit_object_value_changed (GDBusConnection *bus, const gchar *path, const gchar *interface_name, const gchar *property_name, GVariant *property_value)
558 GVariantBuilder builder;
559 GError *error = NULL;
561 g_variant_builder_init (&builder, G_VARIANT_TYPE_ARRAY);
562 g_variant_builder_add (&builder, "{sv}", property_name, property_value);
564 if (!g_dbus_connection_emit_signal (bus,
567 "org.freedesktop.DBus.Properties",
569 g_variant_new ("(sa{sv}as)", interface_name, &builder, NULL),
571 g_warning ("Failed to emit PropertiesChanged signal: %s", error->message);
572 g_clear_error (&error);
576 emit_object_signal (GDBusConnection *bus, const gchar *path, const gchar *signal_name, const gchar *object_path)
578 GError *error = NULL;
580 if (!g_dbus_connection_emit_signal (bus,
583 "org.freedesktop.DisplayManager",
585 g_variant_new ("(o)", object_path),
587 g_warning ("Failed to emit %s signal on %s: %s", signal_name, path, error->message);
588 g_clear_error (&error);
592 seat_bus_entry_free (gpointer data)
594 SeatBusEntry *entry = data;
596 g_dbus_connection_unregister_object (bus, entry->bus_id);
598 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Seats", get_seat_list ());
599 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SeatRemoved", entry->path);
601 g_free (entry->path);
606 session_bus_entry_free (gpointer data)
608 SessionBusEntry *entry = data;
610 g_dbus_connection_unregister_object (bus, entry->bus_id);
612 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Sessions", get_session_list (NULL));
613 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SessionRemoved", entry->path);
615 emit_object_value_changed (bus, entry->seat_path, "org.freedesktop.DisplayManager.Seat", "Sessions", get_session_list (entry->seat_path));
616 emit_object_signal (bus, entry->seat_path, "SessionRemoved", entry->path);
618 g_free (entry->path);
619 g_free (entry->seat_path);
624 running_user_session_cb (Seat *seat, Session *session)
626 static const GDBusInterfaceVTable session_vtable =
629 handle_session_get_property
631 SeatBusEntry *seat_entry;
632 SessionBusEntry *session_entry;
634 GError *error = NULL;
636 /* Set environment variables when session runs */
637 seat_entry = g_hash_table_lookup (seat_bus_entries, seat);
638 session_set_env (session, "XDG_SEAT_PATH", seat_entry->path);
639 path = g_strdup_printf ("/org/freedesktop/DisplayManager/Session%d", session_index);
641 session_set_env (session, "XDG_SESSION_PATH", path);
642 g_object_set_data_full (G_OBJECT (session), "XDG_SESSION_PATH", path, g_free);
644 seat_entry = g_hash_table_lookup (seat_bus_entries, seat);
645 session_entry = session_bus_entry_new (g_object_get_data (G_OBJECT (session), "XDG_SESSION_PATH"), seat_entry ? seat_entry->path : NULL);
646 g_hash_table_insert (session_bus_entries, g_object_ref (session), session_entry);
648 g_debug ("Registering session with bus path %s", session_entry->path);
650 session_entry->bus_id = g_dbus_connection_register_object (bus,
652 session_info->interfaces[0],
654 g_object_ref (session), g_object_unref,
656 if (session_entry->bus_id == 0)
657 g_warning ("Failed to register user session: %s", error->message);
658 g_clear_error (&error);
660 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Sessions", get_session_list (NULL));
661 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SessionAdded", session_entry->path);
663 emit_object_value_changed (bus, seat_entry->path, "org.freedesktop.DisplayManager.Seat", "Sessions", get_session_list (session_entry->seat_path));
664 emit_object_signal (bus, seat_entry->path, "SessionAdded", session_entry->path);
668 session_removed_cb (Seat *seat, Session *session)
670 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
671 g_hash_table_remove (session_bus_entries, session);
675 seat_added_cb (DisplayManager *display_manager, Seat *seat)
677 static const GDBusInterfaceVTable seat_vtable =
680 handle_seat_get_property
684 GError *error = NULL;
686 path = g_strdup_printf ("/org/freedesktop/DisplayManager/Seat%d", seat_index);
689 entry = seat_bus_entry_new (path);
691 g_hash_table_insert (seat_bus_entries, g_object_ref (seat), entry);
693 g_debug ("Registering seat with bus path %s", entry->path);
695 entry->bus_id = g_dbus_connection_register_object (bus,
697 seat_info->interfaces[0],
699 g_object_ref (seat), g_object_unref,
701 if (entry->bus_id == 0)
702 g_warning ("Failed to register seat: %s", error->message);
703 g_clear_error (&error);
705 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Seats", get_seat_list ());
706 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SeatAdded", entry->path);
708 g_signal_connect (seat, SEAT_SIGNAL_RUNNING_USER_SESSION, G_CALLBACK (running_user_session_cb), NULL);
709 g_signal_connect (seat, SEAT_SIGNAL_SESSION_REMOVED, G_CALLBACK (session_removed_cb), NULL);
713 seat_removed_cb (DisplayManager *display_manager, Seat *seat)
715 g_hash_table_remove (seat_bus_entries, seat);
719 xdmcp_session_cb (XDMCPServer *server, XDMCPSession *session)
721 SeatXDMCPSession *seat;
724 seat = seat_xdmcp_session_new (session);
725 set_seat_properties (SEAT (seat), NULL);
726 result = display_manager_add_seat (display_manager, SEAT (seat));
727 g_object_unref (seat);
733 vnc_connection_cb (VNCServer *server, GSocket *connection)
737 seat = seat_xvnc_new (connection);
738 set_seat_properties (SEAT (seat), NULL);
739 display_manager_add_seat (display_manager, SEAT (seat));
740 g_object_unref (seat);
744 bus_acquired_cb (GDBusConnection *connection,
748 const gchar *display_manager_interface =
750 " <interface name='org.freedesktop.DisplayManager'>"
751 " <property name='Seats' type='ao' access='read'/>"
752 " <property name='Sessions' type='ao' access='read'/>"
753 " <method name='AddSeat'>"
754 " <arg name='type' direction='in' type='s'/>"
755 " <arg name='properties' direction='in' type='a(ss)'/>"
756 " <arg name='seat' direction='out' type='o'/>"
758 " <method name='AddLocalXSeat'>"
759 " <arg name='display-number' direction='in' type='i'/>"
760 " <arg name='seat' direction='out' type='o'/>"
762 " <signal name='SeatAdded'>"
763 " <arg name='seat' type='o'/>"
765 " <signal name='SeatRemoved'>"
766 " <arg name='seat' type='o'/>"
768 " <signal name='SessionAdded'>"
769 " <arg name='session' type='o'/>"
771 " <signal name='SessionRemoved'>"
772 " <arg name='session' type='o'/>"
776 static const GDBusInterfaceVTable display_manager_vtable =
778 handle_display_manager_call,
779 handle_display_manager_get_property
781 const gchar *seat_interface =
783 " <interface name='org.freedesktop.DisplayManager.Seat'>"
784 " <property name='CanSwitch' type='b' access='read'/>"
785 " <property name='HasGuestAccount' type='b' access='read'/>"
786 " <property name='Sessions' type='ao' access='read'/>"
787 " <method name='SwitchToGreeter'/>"
788 " <method name='SwitchToUser'>"
789 " <arg name='username' direction='in' type='s'/>"
790 " <arg name='session-name' direction='in' type='s'/>"
792 " <method name='SwitchToGuest'>"
793 " <arg name='session-name' direction='in' type='s'/>"
795 " <method name='Lock'/>"
796 " <signal name='SessionAdded'>"
797 " <arg name='session' type='o'/>"
799 " <signal name='SessionRemoved'>"
800 " <arg name='session' type='o'/>"
804 const gchar *session_interface =
806 " <interface name='org.freedesktop.DisplayManager.Session'>"
807 " <property name='Seat' type='o' access='read'/>"
808 " <property name='UserName' type='s' access='read'/>"
809 " <method name='Lock'/>"
812 GDBusNodeInfo *display_manager_info;
814 GError *error = NULL;
816 g_debug ("Acquired bus name %s", name);
820 display_manager_info = g_dbus_node_info_new_for_xml (display_manager_interface, NULL);
821 g_assert (display_manager_info != NULL);
822 seat_info = g_dbus_node_info_new_for_xml (seat_interface, NULL);
823 g_assert (seat_info != NULL);
824 session_info = g_dbus_node_info_new_for_xml (session_interface, NULL);
825 g_assert (session_info != NULL);
827 reg_id = g_dbus_connection_register_object (connection,
828 "/org/freedesktop/DisplayManager",
829 display_manager_info->interfaces[0],
830 &display_manager_vtable,
834 g_warning ("Failed to register display manager: %s", error->message);
835 g_clear_error (&error);
836 g_dbus_node_info_unref (display_manager_info);
838 seat_bus_entries = g_hash_table_new_full (g_direct_hash, g_direct_equal, g_object_unref, seat_bus_entry_free);
839 session_bus_entries = g_hash_table_new_full (g_direct_hash, g_direct_equal, g_object_unref, session_bus_entry_free);
841 g_signal_connect (display_manager, DISPLAY_MANAGER_SIGNAL_SEAT_ADDED, G_CALLBACK (seat_added_cb), NULL);
842 g_signal_connect (display_manager, DISPLAY_MANAGER_SIGNAL_SEAT_REMOVED, G_CALLBACK (seat_removed_cb), NULL);
843 for (link = display_manager_get_seats (display_manager); link; link = link->next)
844 seat_added_cb (display_manager, (Seat *) link->data);
846 display_manager_start (display_manager);
848 /* Start the XDMCP server */
849 if (config_get_boolean (config_get_instance (), "XDMCPServer", "enabled"))
851 gchar *key_name, *key = NULL;
853 xdmcp_server = xdmcp_server_new ();
854 if (config_has_key (config_get_instance (), "XDMCPServer", "port"))
857 port = config_get_integer (config_get_instance (), "XDMCPServer", "port");
859 xdmcp_server_set_port (xdmcp_server, port);
861 g_signal_connect (xdmcp_server, XDMCP_SERVER_SIGNAL_NEW_SESSION, G_CALLBACK (xdmcp_session_cb), NULL);
863 key_name = config_get_string (config_get_instance (), "XDMCPServer", "key");
869 GError *error = NULL;
871 path = g_build_filename (config_get_directory (config_get_instance ()), "keys.conf", NULL);
873 keys = g_key_file_new ();
874 result = g_key_file_load_from_file (keys, path, G_KEY_FILE_NONE, &error);
876 g_debug ("Error getting key %s", error->message);
877 g_clear_error (&error);
881 if (g_key_file_has_key (keys, "keyring", key_name, NULL))
882 key = g_key_file_get_string (keys, "keyring", key_name, NULL);
884 g_debug ("Key %s not defined", key_name);
887 g_key_file_free (keys);
890 xdmcp_server_set_key (xdmcp_server, key);
894 g_debug ("Starting XDMCP server on UDP/IP port %d", xdmcp_server_get_port (xdmcp_server));
895 xdmcp_server_start (xdmcp_server);
898 /* Start the VNC server */
899 if (config_get_boolean (config_get_instance (), "VNCServer", "enabled"))
903 path = g_find_program_in_path ("Xvnc");
906 vnc_server = vnc_server_new ();
907 if (config_has_key (config_get_instance (), "VNCServer", "port"))
910 port = config_get_integer (config_get_instance (), "VNCServer", "port");
912 vnc_server_set_port (vnc_server, port);
914 g_signal_connect (vnc_server, VNC_SERVER_SIGNAL_NEW_CONNECTION, G_CALLBACK (vnc_connection_cb), NULL);
916 g_debug ("Starting VNC server on TCP/IP port %d", vnc_server_get_port (vnc_server));
917 vnc_server_start (vnc_server);
922 g_warning ("Can't start VNC server, Xvnc is not in the path");
927 name_lost_cb (GDBusConnection *connection,
932 g_printerr ("Failed to use bus name " LIGHTDM_BUS_NAME ", do you have appropriate permissions?\n");
934 g_printerr ("Failed to get D-Bus connection\n");
940 add_login1_seat (Login1Seat *login1_seat)
942 const gchar *seat_name = login1_seat_get_id (login1_seat);
944 gchar *config_section = NULL;
945 gchar **types = NULL, **type;
947 gboolean is_seat0, started = FALSE;
949 g_debug ("New seat added from logind: %s", seat_name);
950 is_seat0 = strcmp (seat_name, "seat0") == 0;
952 groups = config_get_groups (config_get_instance ());
953 for (i = groups; !config_section && *i; i++)
955 if (g_str_has_prefix (*i, "Seat:") &&
956 g_str_has_suffix (*i, seat_name))
958 config_section = g_strdup (*i);
966 g_debug ("Loading properties from config section %s", config_section);
967 types = config_get_string_list (config_get_instance (), config_section, "type");
971 types = config_get_string_list (config_get_instance (), "SeatDefaults", "type");
972 for (type = types; !seat && type && *type; type++)
973 seat = seat_new (*type, seat_name);
978 set_seat_properties (seat, NULL);
980 if (!login1_seat_get_can_multi_session (login1_seat))
982 g_debug ("Seat %s has property CanMultiSession=no", seat_name);
983 seat_set_property (seat, "allow-user-switching", "false");
987 set_seat_properties (seat, config_section);
990 seat_set_property (seat, "exit-on-failure", "true");
993 g_debug ("Unable to create seat: %s", seat_name);
997 started = display_manager_add_seat (display_manager, seat);
999 g_debug ("Failed to start seat: %s", seat_name);
1002 g_free (config_section);
1003 g_object_unref (seat);
1009 remove_login1_seat (Login1Seat *login1_seat)
1013 seat = display_manager_get_seat (display_manager, login1_seat_get_id (login1_seat));
1019 seat_stopped_cb (Seat *seat, Login1Seat *login1_seat)
1021 update_login1_seat (login1_seat);
1022 g_signal_handlers_disconnect_matched (seat, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, login1_seat);
1026 update_login1_seat (Login1Seat *login1_seat)
1028 if (!config_get_boolean (config_get_instance (), "LightDM", "logind-check-graphical") ||
1029 login1_seat_get_can_graphical (login1_seat))
1033 /* Wait for existing seat to stop or ignore if we already have a valid seat */
1034 seat = display_manager_get_seat (display_manager, login1_seat_get_id (login1_seat));
1037 if (seat_get_is_stopping (seat))
1038 g_signal_connect (seat, SEAT_SIGNAL_STOPPED, G_CALLBACK (seat_stopped_cb), login1_seat);
1042 return add_login1_seat (login1_seat);
1046 remove_login1_seat (login1_seat);
1052 login1_can_graphical_changed_cb (Login1Seat *login1_seat)
1054 g_debug ("Seat %s changes graphical state to %s", login1_seat_get_id (login1_seat), login1_seat_get_can_graphical (login1_seat) ? "true" : "false");
1055 update_login1_seat (login1_seat);
1059 login1_service_seat_added_cb (Login1Service *service, Login1Seat *login1_seat)
1061 if (login1_seat_get_can_graphical (login1_seat))
1062 g_debug ("Seat %s added from logind", login1_seat_get_id (login1_seat));
1064 g_debug ("Seat %s added from logind without graphical output", login1_seat_get_id (login1_seat));
1066 if (config_get_boolean (config_get_instance (), "LightDM", "logind-check-graphical"))
1067 g_signal_connect (login1_seat, LOGIN1_SEAT_SIGNAL_CAN_GRAPHICAL_CHANGED, G_CALLBACK (login1_can_graphical_changed_cb), NULL);
1068 update_login1_seat (login1_seat);
1072 login1_service_seat_removed_cb (Login1Service *service, Login1Seat *login1_seat)
1074 g_debug ("Seat %s removed from logind", login1_seat_get_id (login1_seat));
1075 g_signal_handlers_disconnect_matched (login1_seat, G_SIGNAL_MATCH_FUNC, 0, 0, NULL, login1_can_graphical_changed_cb, NULL);
1076 remove_login1_seat (login1_seat);
1080 main (int argc, char **argv)
1083 GOptionContext *option_context;
1086 gboolean test_mode = FALSE;
1087 gchar *pid_path = "/var/run/lightdm.pid";
1088 gchar *log_dir = NULL;
1089 gchar *run_dir = NULL;
1090 gchar *cache_dir = NULL;
1091 gchar *default_log_dir = g_strdup (LOG_DIR);
1092 gchar *default_run_dir = g_strdup (RUN_DIR);
1093 gchar *default_cache_dir = g_strdup (CACHE_DIR);
1094 gboolean show_config = FALSE, show_version = FALSE;
1095 GList *link, *messages = NULL;
1096 GOptionEntry options[] =
1098 { "config", 'c', 0, G_OPTION_ARG_STRING, &config_path,
1099 /* Help string for command line --config flag */
1100 N_("Use configuration file"), "FILE" },
1101 { "debug", 'd', 0, G_OPTION_ARG_NONE, &debug,
1102 /* Help string for command line --debug flag */
1103 N_("Print debugging messages"), NULL },
1104 { "test-mode", 0, 0, G_OPTION_ARG_NONE, &test_mode,
1105 /* Help string for command line --test-mode flag */
1106 N_("Run as unprivileged user, skipping things that require root access"), NULL },
1107 { "pid-file", 0, 0, G_OPTION_ARG_STRING, &pid_path,
1108 /* Help string for command line --pid-file flag */
1109 N_("File to write PID into"), "FILE" },
1110 { "log-dir", 0, 0, G_OPTION_ARG_STRING, &log_dir,
1111 /* Help string for command line --log-dir flag */
1112 N_("Directory to write logs to"), "DIRECTORY" },
1113 { "run-dir", 0, 0, G_OPTION_ARG_STRING, &run_dir,
1114 /* Help string for command line --run-dir flag */
1115 N_("Directory to store running state"), "DIRECTORY" },
1116 { "cache-dir", 0, 0, G_OPTION_ARG_STRING, &cache_dir,
1117 /* Help string for command line --cache-dir flag */
1118 N_("Directory to cache information"), "DIRECTORY" },
1119 { "show-config", 0, 0, G_OPTION_ARG_NONE, &show_config,
1120 /* Help string for command line --show-config flag */
1121 N_("Show combined configuration"), NULL },
1122 { "version", 'v', 0, G_OPTION_ARG_NONE, &show_version,
1123 /* Help string for command line --version flag */
1124 N_("Show release version"), NULL },
1127 GError *error = NULL;
1129 /* When lightdm starts sessions it needs to run itself in a new mode */
1130 if (argc >= 2 && strcmp (argv[1], "--session-child") == 0)
1131 return session_child_run (argc, argv);
1133 #if !defined(GLIB_VERSION_2_36)
1136 loop = g_main_loop_new (NULL, FALSE);
1138 messages = g_list_append (messages, g_strdup_printf ("Starting Light Display Manager %s, UID=%i PID=%i", VERSION, getuid (), getpid ()));
1140 g_signal_connect (process_get_current (), PROCESS_SIGNAL_GOT_SIGNAL, G_CALLBACK (signal_cb), NULL);
1142 option_context = g_option_context_new (/* Arguments and description for --help test */
1143 _("- Display Manager"));
1144 g_option_context_add_main_entries (option_context, options, GETTEXT_PACKAGE);
1145 result = g_option_context_parse (option_context, &argc, &argv, &error);
1147 g_printerr ("%s\n", error->message);
1148 g_clear_error (&error);
1149 g_option_context_free (option_context);
1152 g_printerr (/* Text printed out when an unknown command-line argument provided */
1153 _("Run '%s --help' to see a full list of available command line options."), argv[0]);
1155 return EXIT_FAILURE;
1158 /* Show combined configuration if user requested it */
1161 GList *sources, *link;
1162 gchar **groups, *last_source, *empty_source;
1163 GHashTable *source_ids;
1166 if (!config_load_from_standard_locations (config_get_instance (), config_path, NULL))
1167 return EXIT_FAILURE;
1169 /* Number sources */
1170 sources = config_get_sources (config_get_instance ());
1171 source_ids = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1173 for (i = 0, link = sources; link; i++, link = link->next)
1179 id = g_strdup_printf ("%c", 'A' + i);
1181 id = g_strdup_printf ("%d", i);
1182 g_hash_table_insert (source_ids, g_strdup (path), id);
1185 empty_source = g_strdup (last_source);
1186 for (i = 0; empty_source[i] != '\0'; i++)
1187 empty_source[i] = ' ';
1189 /* Print out keys */
1190 groups = config_get_groups (config_get_instance ());
1191 for (i = 0; groups[i]; i++)
1198 g_printerr ("%s [%s]\n", empty_source, groups[i]);
1200 keys = config_get_keys (config_get_instance (), groups[i]);
1201 for (j = 0; keys && keys[j]; j++)
1203 const gchar *source, *id;
1206 source = config_get_source (config_get_instance (), groups[i], keys[j]);
1207 id = source ? g_hash_table_lookup (source_ids, source) : empty_source;
1208 value = config_get_string (config_get_instance (), groups[i], keys[j]);
1209 g_printerr ("%s %s=%s\n", id, keys[j], value);
1215 g_strfreev (groups);
1217 /* Show mapping from source number to path */
1219 g_printerr ("Sources:\n");
1220 for (link = sources; link; link = link->next)
1222 const gchar *path = link->data;
1223 const gchar *source;
1225 source = g_hash_table_lookup (source_ids, path);
1226 g_printerr ("%s %s\n", source, path);
1229 g_hash_table_destroy (source_ids);
1231 return EXIT_SUCCESS;
1236 /* NOTE: Is not translated so can be easily parsed */
1237 g_printerr ("lightdm %s\n", VERSION);
1238 return EXIT_SUCCESS;
1241 if (!test_mode && getuid () != 0)
1243 g_printerr ("Only root can run Light Display Manager. To run as a regular user for testing run with the --test-mode flag.\n");
1244 return EXIT_FAILURE;
1247 /* If running inside an X server use Xephyr for display */
1248 if (getenv ("DISPLAY") && getuid () != 0)
1250 gchar *x_server_path;
1252 x_server_path = g_find_program_in_path ("Xephyr");
1255 g_printerr ("Running inside an X server requires Xephyr to be installed but it cannot be found. Please install it or update your PATH environment variable.\n");
1256 return EXIT_FAILURE;
1258 g_free (x_server_path);
1261 /* Make sure the system binary directory (where the greeters are installed) is in the path */
1264 const gchar *path = g_getenv ("PATH");
1268 new_path = g_strdup_printf ("%s:%s", path, SBIN_DIR);
1270 new_path = g_strdup (SBIN_DIR);
1271 g_setenv ("PATH", new_path, TRUE);
1275 /* Write PID file */
1276 pid_file = fopen (pid_path, "w");
1279 fprintf (pid_file, "%d\n", getpid ());
1283 /* If not running as root write output to directories we control */
1286 g_free (default_log_dir);
1287 default_log_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "log", NULL);
1288 g_free (default_run_dir);
1289 default_run_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "run", NULL);
1290 g_free (default_cache_dir);
1291 default_cache_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "cache", NULL);
1294 /* Load config file(s) */
1295 if (!config_load_from_standard_locations (config_get_instance (), config_path, &messages))
1296 exit (EXIT_FAILURE);
1297 g_free (config_path);
1299 /* Set default values */
1300 if (!config_has_key (config_get_instance (), "LightDM", "start-default-seat"))
1301 config_set_boolean (config_get_instance (), "LightDM", "start-default-seat", TRUE);
1302 if (!config_has_key (config_get_instance (), "LightDM", "minimum-vt"))
1303 config_set_integer (config_get_instance (), "LightDM", "minimum-vt", 7);
1304 if (!config_has_key (config_get_instance (), "LightDM", "guest-account-script"))
1305 config_set_string (config_get_instance (), "LightDM", "guest-account-script", "guest-account");
1306 if (!config_has_key (config_get_instance (), "LightDM", "greeter-user"))
1307 config_set_string (config_get_instance (), "LightDM", "greeter-user", GREETER_USER);
1308 if (!config_has_key (config_get_instance (), "LightDM", "lock-memory"))
1309 config_set_boolean (config_get_instance (), "LightDM", "lock-memory", TRUE);
1310 if (!config_has_key (config_get_instance (), "SeatDefaults", "type"))
1311 config_set_string (config_get_instance (), "SeatDefaults", "type", "xlocal");
1312 if (!config_has_key (config_get_instance (), "SeatDefaults", "pam-service"))
1313 config_set_string (config_get_instance (), "SeatDefaults", "pam-service", "lightdm");
1314 if (!config_has_key (config_get_instance (), "SeatDefaults", "pam-autologin-service"))
1315 config_set_string (config_get_instance (), "SeatDefaults", "pam-autologin-service", "lightdm-autologin");
1316 if (!config_has_key (config_get_instance (), "SeatDefaults", "pam-greeter-service"))
1317 config_set_string (config_get_instance (), "SeatDefaults", "pam-greeter-service", "lightdm-greeter");
1318 if (!config_has_key (config_get_instance (), "SeatDefaults", "xserver-command"))
1319 config_set_string (config_get_instance (), "SeatDefaults", "xserver-command", "X");
1320 if (!config_has_key (config_get_instance (), "SeatDefaults", "xserver-share"))
1321 config_set_boolean (config_get_instance (), "SeatDefaults", "xserver-share", TRUE);
1322 if (!config_has_key (config_get_instance (), "SeatDefaults", "unity-compositor-command"))
1323 config_set_string (config_get_instance (), "SeatDefaults", "unity-compositor-command", "unity-system-compositor");
1324 if (!config_has_key (config_get_instance (), "SeatDefaults", "start-session"))
1325 config_set_boolean (config_get_instance (), "SeatDefaults", "start-session", TRUE);
1326 if (!config_has_key (config_get_instance (), "SeatDefaults", "allow-user-switching"))
1327 config_set_boolean (config_get_instance (), "SeatDefaults", "allow-user-switching", TRUE);
1328 if (!config_has_key (config_get_instance (), "SeatDefaults", "allow-guest"))
1329 config_set_boolean (config_get_instance (), "SeatDefaults", "allow-guest", TRUE);
1330 if (!config_has_key (config_get_instance (), "SeatDefaults", "greeter-allow-guest"))
1331 config_set_boolean (config_get_instance (), "SeatDefaults", "greeter-allow-guest", TRUE);
1332 if (!config_has_key (config_get_instance (), "SeatDefaults", "greeter-show-remote-login"))
1333 config_set_boolean (config_get_instance (), "SeatDefaults", "greeter-show-remote-login", TRUE);
1334 if (!config_has_key (config_get_instance (), "SeatDefaults", "greeter-session"))
1335 config_set_string (config_get_instance (), "SeatDefaults", "greeter-session", GREETER_SESSION);
1336 if (!config_has_key (config_get_instance (), "SeatDefaults", "user-session"))
1337 config_set_string (config_get_instance (), "SeatDefaults", "user-session", USER_SESSION);
1338 if (!config_has_key (config_get_instance (), "SeatDefaults", "session-wrapper"))
1339 config_set_string (config_get_instance (), "SeatDefaults", "session-wrapper", "lightdm-session");
1340 if (!config_has_key (config_get_instance (), "LightDM", "log-directory"))
1341 config_set_string (config_get_instance (), "LightDM", "log-directory", default_log_dir);
1342 g_free (default_log_dir);
1343 if (!config_has_key (config_get_instance (), "LightDM", "run-directory"))
1344 config_set_string (config_get_instance (), "LightDM", "run-directory", default_run_dir);
1345 g_free (default_run_dir);
1346 if (!config_has_key (config_get_instance (), "LightDM", "cache-directory"))
1347 config_set_string (config_get_instance (), "LightDM", "cache-directory", default_cache_dir);
1348 g_free (default_cache_dir);
1349 if (!config_has_key (config_get_instance (), "LightDM", "sessions-directory"))
1350 config_set_string (config_get_instance (), "LightDM", "sessions-directory", SESSIONS_DIR);
1351 if (!config_has_key (config_get_instance (), "LightDM", "remote-sessions-directory"))
1352 config_set_string (config_get_instance (), "LightDM", "remote-sessions-directory", REMOTE_SESSIONS_DIR);
1353 if (!config_has_key (config_get_instance (), "LightDM", "greeters-directory"))
1354 config_set_string (config_get_instance (), "LightDM", "greeters-directory", GREETERS_DIR);
1356 /* Override defaults */
1358 config_set_string (config_get_instance (), "LightDM", "log-directory", log_dir);
1361 config_set_string (config_get_instance (), "LightDM", "run-directory", run_dir);
1364 config_set_string (config_get_instance (), "LightDM", "cache-directory", cache_dir);
1367 /* Create run and cache directories */
1368 dir = config_get_string (config_get_instance (), "LightDM", "log-directory");
1369 if (g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH) < 0)
1370 g_warning ("Failed to make log directory %s: %s", dir, strerror (errno));
1372 dir = config_get_string (config_get_instance (), "LightDM", "run-directory");
1373 if (g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH) < 0)
1374 g_warning ("Failed to make run directory %s: %s", dir, strerror (errno));
1376 dir = config_get_string (config_get_instance (), "LightDM", "cache-directory");
1377 if (g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH) < 0)
1378 g_warning ("Failed to make cache directory %s: %s", dir, strerror (errno));
1383 /* Show queued messages once logging is complete */
1384 for (link = messages; link; link = link->next)
1385 g_debug ("%s", (gchar *)link->data);
1386 g_list_free_full (messages, g_free);
1388 g_debug ("Using D-Bus name %s", LIGHTDM_BUS_NAME);
1389 bus_id = g_bus_own_name (getuid () == 0 ? G_BUS_TYPE_SYSTEM : G_BUS_TYPE_SESSION,
1391 G_BUS_NAME_OWNER_FLAGS_NONE,
1399 g_debug ("Running in user mode");
1400 if (getenv ("DISPLAY"))
1401 g_debug ("Using Xephyr for X servers");
1403 display_manager = display_manager_new ();
1404 g_signal_connect (display_manager, DISPLAY_MANAGER_SIGNAL_STOPPED, G_CALLBACK (display_manager_stopped_cb), NULL);
1405 g_signal_connect (display_manager, DISPLAY_MANAGER_SIGNAL_SEAT_REMOVED, G_CALLBACK (display_manager_seat_removed_cb), NULL);
1407 shared_data_manager_start (shared_data_manager_get_instance ());
1409 /* Connect to logind */
1410 if (login1_service_connect (login1_service_get_instance ()))
1412 /* Load dynamic seats from logind */
1413 g_debug ("Monitoring logind for seats");
1415 if (config_get_boolean (config_get_instance (), "LightDM", "start-default-seat"))
1417 g_signal_connect (login1_service_get_instance (), LOGIN1_SERVICE_SIGNAL_SEAT_ADDED, G_CALLBACK (login1_service_seat_added_cb), NULL);
1418 g_signal_connect (login1_service_get_instance (), LOGIN1_SERVICE_SIGNAL_SEAT_REMOVED, G_CALLBACK (login1_service_seat_removed_cb), NULL);
1420 for (link = login1_service_get_seats (login1_service_get_instance ()); link; link = link->next)
1422 Login1Seat *login1_seat = link->data;
1423 if (config_get_boolean (config_get_instance (), "LightDM", "logind-check-graphical"))
1424 g_signal_connect (login1_seat, LOGIN1_SEAT_SIGNAL_CAN_GRAPHICAL_CHANGED, G_CALLBACK (login1_can_graphical_changed_cb), NULL);
1425 if (!update_login1_seat (login1_seat))
1426 return EXIT_FAILURE;
1432 if (config_get_boolean (config_get_instance (), "LightDM", "start-default-seat"))
1438 g_debug ("Adding default seat");
1440 types = config_get_string_list (config_get_instance (), "SeatDefaults", "type");
1441 for (type = types; type && *type; type++)
1443 seat = seat_new (*type, "seat0");
1450 set_seat_properties (seat, NULL);
1451 seat_set_property (seat, "exit-on-failure", "true");
1452 if (!display_manager_add_seat (display_manager, seat))
1453 return EXIT_FAILURE;
1454 g_object_unref (seat);
1458 g_warning ("Failed to create default seat");
1459 return EXIT_FAILURE;
1464 g_main_loop_run (loop);
1466 /* Clean up shared data manager */
1467 shared_data_manager_cleanup ();
1469 /* Clean up user list */
1470 common_user_list_cleanup ();
1472 /* Clean up display manager */
1473 g_object_unref (display_manager);
1474 display_manager = NULL;
1476 /* Remove D-Bus interface */
1477 g_dbus_connection_unregister_object (bus, reg_id);
1478 g_bus_unown_name (bus_id);
1479 if (seat_bus_entries)
1480 g_hash_table_unref (seat_bus_entries);
1481 if (session_bus_entries)
1482 g_hash_table_unref (session_bus_entries);
1484 g_debug ("Exiting with return value %d", exit_code);