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"
72 log_cb (const gchar *log_domain, GLogLevelFlags log_level, const gchar *message, gpointer data)
77 switch (log_level & G_LOG_LEVEL_MASK)
79 case G_LOG_LEVEL_ERROR:
82 case G_LOG_LEVEL_CRITICAL:
85 case G_LOG_LEVEL_WARNING:
88 case G_LOG_LEVEL_MESSAGE:
91 case G_LOG_LEVEL_INFO:
94 case G_LOG_LEVEL_DEBUG:
102 text = g_strdup_printf ("[%+.2fs] %s %s\n", g_timer_elapsed (log_timer, NULL), prefix, message);
104 /* Log everything to a file */
108 n_written = write (log_fd, text, strlen (text));
110 ; /* Check result so compiler doesn't warn about it */
113 /* Log to stderr if requested */
115 g_printerr ("%s", text);
117 g_log_default_handler (log_domain, log_level, message, data);
125 gchar *log_dir, *path, *old_path;
127 log_timer = g_timer_new ();
130 log_dir = config_get_string (config_get_instance (), "LightDM", "log-directory");
131 path = g_build_filename (log_dir, "lightdm.log", NULL);
134 /* Move old file out of the way */
135 old_path = g_strdup_printf ("%s.old", path);
136 rename (path, old_path);
139 /* Create new file and log to it */
140 log_fd = open (path, O_WRONLY | O_CREAT | O_TRUNC, 0600);
141 fcntl (log_fd, F_SETFD, FD_CLOEXEC);
142 g_log_set_default_handler (log_cb, NULL);
144 g_debug ("Logging to %s", path);
149 get_config_section (const gchar *seat_name)
152 gchar *config_section = NULL;
154 groups = config_get_groups (config_get_instance ());
155 for (i = groups; !config_section && *i; i++)
157 if (g_str_has_prefix (*i, "Seat:"))
159 const gchar *seat_name_glob = *i + strlen ("Seat:");
160 if (g_pattern_match_simple (seat_name_glob, seat_name))
162 config_section = g_strdup (*i);
168 return config_section;
172 set_seat_properties (Seat *seat, const gchar *config_section)
177 keys = config_get_keys (config_get_instance (), "SeatDefaults");
178 for (i = 0; keys && keys[i]; i++)
180 gchar *value = config_get_string (config_get_instance (), "SeatDefaults", keys[i]);
181 seat_set_property (seat, keys[i], value);
188 keys = config_get_keys (config_get_instance (), config_section);
189 for (i = 0; keys && keys[i]; i++)
191 gchar *value = config_get_string (config_get_instance (), config_section, keys[i]);
192 seat_set_property (seat, keys[i], value);
200 signal_cb (Process *process, int signum)
202 g_debug ("Caught %s signal, shutting down", g_strsignal (signum));
203 display_manager_stop (display_manager);
204 // FIXME: Stop XDMCP server
208 display_manager_stopped_cb (DisplayManager *display_manager)
210 g_debug ("Stopping daemon");
211 g_main_loop_quit (loop);
215 display_manager_seat_removed_cb (DisplayManager *display_manager, Seat *seat)
219 Seat *next_seat = NULL;
222 /* If we have fallback types registered for the seat, let's try them
224 types = seat_get_string_list_property (seat, "type");
225 next_types = g_string_new ("");
226 for (iter = types; iter && *iter; iter++)
229 continue; // skip first one, that is our current seat type
233 next_seat = seat_new (*iter, seat_get_name (seat));
234 g_string_assign (next_types, *iter);
238 // Build up list of types to try next time
239 g_string_append_c (next_types, ';');
240 g_string_append (next_types, *iter);
247 gchar *config_section;
249 config_section = get_config_section (seat_get_name (seat));
250 set_seat_properties (next_seat, config_section);
251 g_free (config_section);
253 // We set this manually on default seat. Let's port it over if needed.
254 if (seat_get_boolean_property (seat, "exit-on-failure"))
255 seat_set_property (next_seat, "exit-on-failure", "true");
257 seat_set_property (next_seat, "type", next_types->str);
259 display_manager_add_seat (display_manager, next_seat);
260 g_object_unref (next_seat);
262 else if (seat_get_boolean_property (seat, "exit-on-failure"))
264 g_debug ("Required seat has stopped");
265 exit_code = EXIT_FAILURE;
266 display_manager_stop (display_manager);
269 g_string_free (next_types, TRUE);
275 GVariantBuilder builder;
279 g_variant_builder_init (&builder, G_VARIANT_TYPE ("ao"));
280 g_hash_table_iter_init (&iter, seat_bus_entries);
281 while (g_hash_table_iter_next (&iter, NULL, &value))
283 SeatBusEntry *entry = value;
284 g_variant_builder_add_value (&builder, g_variant_new_object_path (entry->path));
287 return g_variant_builder_end (&builder);
291 get_session_list (const gchar *seat_path)
293 GVariantBuilder builder;
297 g_variant_builder_init (&builder, G_VARIANT_TYPE ("ao"));
299 g_hash_table_iter_init (&iter, session_bus_entries);
300 while (g_hash_table_iter_next (&iter, NULL, &value))
302 SessionBusEntry *entry = value;
303 if (seat_path == NULL || strcmp (entry->seat_path, seat_path) == 0)
304 g_variant_builder_add_value (&builder, g_variant_new_object_path (entry->path));
307 return g_variant_builder_end (&builder);
311 handle_display_manager_get_property (GDBusConnection *connection,
313 const gchar *object_path,
314 const gchar *interface_name,
315 const gchar *property_name,
319 if (g_strcmp0 (property_name, "Seats") == 0)
320 return get_seat_list ();
321 else if (g_strcmp0 (property_name, "Sessions") == 0)
322 return get_session_list (NULL);
328 handle_display_manager_call (GDBusConnection *connection,
330 const gchar *object_path,
331 const gchar *interface_name,
332 const gchar *method_name,
333 GVariant *parameters,
334 GDBusMethodInvocation *invocation,
337 if (g_strcmp0 (method_name, "AddSeat") == 0)
338 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "AddSeat is deprecated");
339 else if (g_strcmp0 (method_name, "AddLocalXSeat") == 0)
344 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(i)")))
346 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
350 g_variant_get (parameters, "(i)", &display_number);
352 g_debug ("Adding local X seat :%d", display_number);
354 seat = seat_new ("xremote", "xremote0"); // FIXME: What to use for a name?
357 gchar *display_number_string;
359 set_seat_properties (seat, NULL);
360 display_number_string = g_strdup_printf ("%d", display_number);
361 seat_set_property (seat, "xserver-display-number", display_number_string);
362 g_free (display_number_string);
367 // FIXME: Need to make proper error
368 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Unable to create local X seat");
372 if (display_manager_add_seat (display_manager, seat))
376 entry = g_hash_table_lookup (seat_bus_entries, seat);
377 g_dbus_method_invocation_return_value (invocation, g_variant_new ("(o)", entry->path));
379 else// FIXME: Need to make proper error
380 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to start seat");
381 g_object_unref (seat);
384 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD, "Unknown method");
388 handle_seat_get_property (GDBusConnection *connection,
390 const gchar *object_path,
391 const gchar *interface_name,
392 const gchar *property_name,
396 Seat *seat = user_data;
398 if (g_strcmp0 (property_name, "CanSwitch") == 0)
399 return g_variant_new_boolean (seat_get_can_switch (seat));
400 if (g_strcmp0 (property_name, "HasGuestAccount") == 0)
401 return g_variant_new_boolean (seat_get_allow_guest (seat));
402 else if (g_strcmp0 (property_name, "Sessions") == 0)
406 entry = g_hash_table_lookup (seat_bus_entries, seat);
407 return get_session_list (entry->path);
414 handle_seat_call (GDBusConnection *connection,
416 const gchar *object_path,
417 const gchar *interface_name,
418 const gchar *method_name,
419 GVariant *parameters,
420 GDBusMethodInvocation *invocation,
423 Seat *seat = user_data;
425 if (g_strcmp0 (method_name, "SwitchToGreeter") == 0)
427 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("()")))
428 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
430 if (seat_switch_to_greeter (seat))
431 g_dbus_method_invocation_return_value (invocation, NULL);
432 else// FIXME: Need to make proper error
433 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to switch to greeter");
435 else if (g_strcmp0 (method_name, "SwitchToUser") == 0)
437 const gchar *username, *session_name;
439 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(ss)")))
440 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
442 g_variant_get (parameters, "(&s&s)", &username, &session_name);
443 if (strcmp (session_name, "") == 0)
446 if (seat_switch_to_user (seat, username, session_name))
447 g_dbus_method_invocation_return_value (invocation, NULL);
448 else// FIXME: Need to make proper error
449 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to switch to user");
451 else if (g_strcmp0 (method_name, "SwitchToGuest") == 0)
453 const gchar *session_name;
455 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(s)")))
456 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
458 g_variant_get (parameters, "(&s)", &session_name);
459 if (strcmp (session_name, "") == 0)
462 if (seat_switch_to_guest (seat, session_name))
463 g_dbus_method_invocation_return_value (invocation, NULL);
464 else// FIXME: Need to make proper error
465 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to switch to guest");
467 else if (g_strcmp0 (method_name, "Lock") == 0)
469 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("()")))
470 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
472 /* FIXME: Should only allow locks if have a session on this seat */
473 if (seat_lock (seat, NULL))
474 g_dbus_method_invocation_return_value (invocation, NULL);
475 else// FIXME: Need to make proper error
476 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to lock seat");
479 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD, "Unknown method");
483 get_seat_for_session (Session *session)
487 for (seat_link = display_manager_get_seats (display_manager); seat_link; seat_link = seat_link->next)
489 Seat *seat = seat_link->data;
492 for (session_link = seat_get_sessions (seat); session_link; session_link = session_link->next)
494 Session *s = session_link->data;
505 handle_session_get_property (GDBusConnection *connection,
507 const gchar *object_path,
508 const gchar *interface_name,
509 const gchar *property_name,
513 Session *session = user_data;
514 SessionBusEntry *entry;
516 entry = g_hash_table_lookup (session_bus_entries, session);
517 if (g_strcmp0 (property_name, "Seat") == 0)
518 return g_variant_new_object_path (entry ? entry->seat_path : "");
519 else if (g_strcmp0 (property_name, "UserName") == 0)
520 return g_variant_new_string (session_get_username (session));
526 handle_session_call (GDBusConnection *connection,
528 const gchar *object_path,
529 const gchar *interface_name,
530 const gchar *method_name,
531 GVariant *parameters,
532 GDBusMethodInvocation *invocation,
535 Session *session = user_data;
537 if (g_strcmp0 (method_name, "Lock") == 0)
541 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("()")))
542 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
544 seat = get_seat_for_session (session);
545 /* FIXME: Should only allow locks if have a session on this seat */
546 seat_lock (seat, session_get_username (session));
547 g_dbus_method_invocation_return_value (invocation, NULL);
550 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD, "Unknown method");
553 static SeatBusEntry *
554 seat_bus_entry_new (const gchar *path)
558 entry = g_malloc0 (sizeof (SeatBusEntry));
559 entry->path = g_strdup (path);
564 static SessionBusEntry *
565 session_bus_entry_new (const gchar *path, const gchar *seat_path)
567 SessionBusEntry *entry;
569 entry = g_malloc0 (sizeof (SessionBusEntry));
570 entry->path = g_strdup (path);
571 entry->seat_path = g_strdup (seat_path);
577 emit_object_value_changed (GDBusConnection *bus, const gchar *path, const gchar *interface_name, const gchar *property_name, GVariant *property_value)
579 GVariantBuilder builder;
580 GError *error = NULL;
582 g_variant_builder_init (&builder, G_VARIANT_TYPE_ARRAY);
583 g_variant_builder_add (&builder, "{sv}", property_name, property_value);
585 if (!g_dbus_connection_emit_signal (bus,
588 "org.freedesktop.DBus.Properties",
590 g_variant_new ("(sa{sv}as)", interface_name, &builder, NULL),
592 g_warning ("Failed to emit PropertiesChanged signal: %s", error->message);
593 g_clear_error (&error);
597 emit_object_signal (GDBusConnection *bus, const gchar *path, const gchar *signal_name, const gchar *object_path)
599 GError *error = NULL;
601 if (!g_dbus_connection_emit_signal (bus,
604 "org.freedesktop.DisplayManager",
606 g_variant_new ("(o)", object_path),
608 g_warning ("Failed to emit %s signal on %s: %s", signal_name, path, error->message);
609 g_clear_error (&error);
613 seat_bus_entry_free (gpointer data)
615 SeatBusEntry *entry = data;
617 g_dbus_connection_unregister_object (bus, entry->bus_id);
619 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Seats", get_seat_list ());
620 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SeatRemoved", entry->path);
622 g_free (entry->path);
627 session_bus_entry_free (gpointer data)
629 SessionBusEntry *entry = data;
631 g_dbus_connection_unregister_object (bus, entry->bus_id);
633 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Sessions", get_session_list (NULL));
634 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SessionRemoved", entry->path);
636 emit_object_value_changed (bus, entry->seat_path, "org.freedesktop.DisplayManager.Seat", "Sessions", get_session_list (entry->seat_path));
637 emit_object_signal (bus, entry->seat_path, "SessionRemoved", entry->path);
639 g_free (entry->path);
640 g_free (entry->seat_path);
645 running_user_session_cb (Seat *seat, Session *session)
647 static const GDBusInterfaceVTable session_vtable =
650 handle_session_get_property
652 SeatBusEntry *seat_entry;
653 SessionBusEntry *session_entry;
655 GError *error = NULL;
657 /* Set environment variables when session runs */
658 seat_entry = g_hash_table_lookup (seat_bus_entries, seat);
659 session_set_env (session, "XDG_SEAT_PATH", seat_entry->path);
660 path = g_strdup_printf ("/org/freedesktop/DisplayManager/Session%d", session_index);
662 session_set_env (session, "XDG_SESSION_PATH", path);
663 g_object_set_data_full (G_OBJECT (session), "XDG_SESSION_PATH", path, g_free);
665 seat_entry = g_hash_table_lookup (seat_bus_entries, seat);
666 session_entry = session_bus_entry_new (g_object_get_data (G_OBJECT (session), "XDG_SESSION_PATH"), seat_entry ? seat_entry->path : NULL);
667 g_hash_table_insert (session_bus_entries, g_object_ref (session), session_entry);
669 g_debug ("Registering session with bus path %s", session_entry->path);
671 session_entry->bus_id = g_dbus_connection_register_object (bus,
673 session_info->interfaces[0],
675 g_object_ref (session), g_object_unref,
677 if (session_entry->bus_id == 0)
678 g_warning ("Failed to register user session: %s", error->message);
679 g_clear_error (&error);
681 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Sessions", get_session_list (NULL));
682 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SessionAdded", session_entry->path);
684 emit_object_value_changed (bus, seat_entry->path, "org.freedesktop.DisplayManager.Seat", "Sessions", get_session_list (session_entry->seat_path));
685 emit_object_signal (bus, seat_entry->path, "SessionAdded", session_entry->path);
689 session_removed_cb (Seat *seat, Session *session)
691 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
692 g_hash_table_remove (session_bus_entries, session);
696 seat_added_cb (DisplayManager *display_manager, Seat *seat)
698 static const GDBusInterfaceVTable seat_vtable =
701 handle_seat_get_property
705 GError *error = NULL;
707 path = g_strdup_printf ("/org/freedesktop/DisplayManager/Seat%d", seat_index);
710 entry = seat_bus_entry_new (path);
712 g_hash_table_insert (seat_bus_entries, g_object_ref (seat), entry);
714 g_debug ("Registering seat with bus path %s", entry->path);
716 entry->bus_id = g_dbus_connection_register_object (bus,
718 seat_info->interfaces[0],
720 g_object_ref (seat), g_object_unref,
722 if (entry->bus_id == 0)
723 g_warning ("Failed to register seat: %s", error->message);
724 g_clear_error (&error);
726 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Seats", get_seat_list ());
727 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SeatAdded", entry->path);
729 g_signal_connect (seat, "running-user-session", G_CALLBACK (running_user_session_cb), NULL);
730 g_signal_connect (seat, "session-removed", G_CALLBACK (session_removed_cb), NULL);
734 seat_removed_cb (DisplayManager *display_manager, Seat *seat)
736 g_hash_table_remove (seat_bus_entries, seat);
740 xdmcp_session_cb (XDMCPServer *server, XDMCPSession *session)
742 SeatXDMCPSession *seat;
745 seat = seat_xdmcp_session_new (session);
746 set_seat_properties (SEAT (seat), NULL);
747 result = display_manager_add_seat (display_manager, SEAT (seat));
748 g_object_unref (seat);
754 vnc_connection_cb (VNCServer *server, GSocket *connection)
758 seat = seat_xvnc_new (connection);
759 set_seat_properties (SEAT (seat), NULL);
760 display_manager_add_seat (display_manager, SEAT (seat));
761 g_object_unref (seat);
765 bus_acquired_cb (GDBusConnection *connection,
769 const gchar *display_manager_interface =
771 " <interface name='org.freedesktop.DisplayManager'>"
772 " <property name='Seats' type='ao' access='read'/>"
773 " <property name='Sessions' type='ao' access='read'/>"
774 " <method name='AddSeat'>"
775 " <arg name='type' direction='in' type='s'/>"
776 " <arg name='properties' direction='in' type='a(ss)'/>"
777 " <arg name='seat' direction='out' type='o'/>"
779 " <method name='AddLocalXSeat'>"
780 " <arg name='display-number' direction='in' type='i'/>"
781 " <arg name='seat' direction='out' type='o'/>"
783 " <signal name='SeatAdded'>"
784 " <arg name='seat' type='o'/>"
786 " <signal name='SeatRemoved'>"
787 " <arg name='seat' type='o'/>"
789 " <signal name='SessionAdded'>"
790 " <arg name='session' type='o'/>"
792 " <signal name='SessionRemoved'>"
793 " <arg name='session' type='o'/>"
797 static const GDBusInterfaceVTable display_manager_vtable =
799 handle_display_manager_call,
800 handle_display_manager_get_property
802 const gchar *seat_interface =
804 " <interface name='org.freedesktop.DisplayManager.Seat'>"
805 " <property name='CanSwitch' type='b' access='read'/>"
806 " <property name='HasGuestAccount' type='b' access='read'/>"
807 " <property name='Sessions' type='ao' access='read'/>"
808 " <method name='SwitchToGreeter'/>"
809 " <method name='SwitchToUser'>"
810 " <arg name='username' direction='in' type='s'/>"
811 " <arg name='session-name' direction='in' type='s'/>"
813 " <method name='SwitchToGuest'>"
814 " <arg name='session-name' direction='in' type='s'/>"
816 " <method name='Lock'/>"
817 " <signal name='SessionAdded'>"
818 " <arg name='session' type='o'/>"
820 " <signal name='SessionRemoved'>"
821 " <arg name='session' type='o'/>"
825 const gchar *session_interface =
827 " <interface name='org.freedesktop.DisplayManager.Session'>"
828 " <property name='Seat' type='o' access='read'/>"
829 " <property name='UserName' type='s' access='read'/>"
830 " <method name='Lock'/>"
833 GDBusNodeInfo *display_manager_info;
835 GError *error = NULL;
837 g_debug ("Acquired bus name %s", name);
841 display_manager_info = g_dbus_node_info_new_for_xml (display_manager_interface, NULL);
842 g_assert (display_manager_info != NULL);
843 seat_info = g_dbus_node_info_new_for_xml (seat_interface, NULL);
844 g_assert (seat_info != NULL);
845 session_info = g_dbus_node_info_new_for_xml (session_interface, NULL);
846 g_assert (session_info != NULL);
848 reg_id = g_dbus_connection_register_object (connection,
849 "/org/freedesktop/DisplayManager",
850 display_manager_info->interfaces[0],
851 &display_manager_vtable,
855 g_warning ("Failed to register display manager: %s", error->message);
856 g_clear_error (&error);
857 g_dbus_node_info_unref (display_manager_info);
859 seat_bus_entries = g_hash_table_new_full (g_direct_hash, g_direct_equal, g_object_unref, seat_bus_entry_free);
860 session_bus_entries = g_hash_table_new_full (g_direct_hash, g_direct_equal, g_object_unref, session_bus_entry_free);
862 g_signal_connect (display_manager, "seat-added", G_CALLBACK (seat_added_cb), NULL);
863 g_signal_connect (display_manager, "seat-removed", G_CALLBACK (seat_removed_cb), NULL);
864 for (link = display_manager_get_seats (display_manager); link; link = link->next)
865 seat_added_cb (display_manager, (Seat *) link->data);
867 display_manager_start (display_manager);
869 /* Start the XDMCP server */
870 if (config_get_boolean (config_get_instance (), "XDMCPServer", "enabled"))
872 gchar *key_name, *key = NULL;
874 xdmcp_server = xdmcp_server_new ();
875 if (config_has_key (config_get_instance (), "XDMCPServer", "port"))
878 port = config_get_integer (config_get_instance (), "XDMCPServer", "port");
880 xdmcp_server_set_port (xdmcp_server, port);
882 g_signal_connect (xdmcp_server, "new-session", G_CALLBACK (xdmcp_session_cb), NULL);
884 key_name = config_get_string (config_get_instance (), "XDMCPServer", "key");
890 GError *error = NULL;
892 path = g_build_filename (config_get_directory (config_get_instance ()), "keys.conf", NULL);
894 keys = g_key_file_new ();
895 result = g_key_file_load_from_file (keys, path, G_KEY_FILE_NONE, &error);
897 g_debug ("Error getting key %s", error->message);
898 g_clear_error (&error);
902 if (g_key_file_has_key (keys, "keyring", key_name, NULL))
903 key = g_key_file_get_string (keys, "keyring", key_name, NULL);
905 g_debug ("Key %s not defined", key_name);
908 g_key_file_free (keys);
911 xdmcp_server_set_key (xdmcp_server, key);
915 g_debug ("Starting XDMCP server on UDP/IP port %d", xdmcp_server_get_port (xdmcp_server));
916 xdmcp_server_start (xdmcp_server);
919 /* Start the VNC server */
920 if (config_get_boolean (config_get_instance (), "VNCServer", "enabled"))
924 path = g_find_program_in_path ("Xvnc");
927 vnc_server = vnc_server_new ();
928 if (config_has_key (config_get_instance (), "VNCServer", "port"))
931 port = config_get_integer (config_get_instance (), "VNCServer", "port");
933 vnc_server_set_port (vnc_server, port);
935 g_signal_connect (vnc_server, "new-connection", G_CALLBACK (vnc_connection_cb), NULL);
937 g_debug ("Starting VNC server on TCP/IP port %d", vnc_server_get_port (vnc_server));
938 vnc_server_start (vnc_server);
943 g_warning ("Can't start VNC server, Xvnc is not in the path");
948 name_lost_cb (GDBusConnection *connection,
953 g_printerr ("Failed to use bus name " LIGHTDM_BUS_NAME ", do you have appropriate permissions?\n");
955 g_printerr ("Failed to get D-Bus connection\n");
961 add_login1_seat (Login1Seat *login1_seat)
963 const gchar *seat_name = login1_seat_get_id (login1_seat);
964 gchar **types = NULL, **type;
965 gchar *config_section;
967 gboolean is_seat0, started = FALSE;
969 g_debug ("New seat added from logind: %s", seat_name);
970 is_seat0 = strcmp (seat_name, "seat0") == 0;
972 config_section = get_config_section (seat_name);
975 g_debug ("Loading properties from config section %s", config_section);
976 types = config_get_string_list (config_get_instance (), config_section, "type");
980 types = config_get_string_list (config_get_instance (), "SeatDefaults", "type");
981 for (type = types; !seat && type && *type; type++)
982 seat = seat_new (*type, seat_name);
987 set_seat_properties (seat, NULL);
989 if (!login1_seat_get_can_multi_session (login1_seat))
991 g_debug ("Seat %s has property CanMultiSession=no", seat_name);
992 seat_set_property (seat, "allow-user-switching", "false");
996 set_seat_properties (seat, config_section);
999 seat_set_property (seat, "exit-on-failure", "true");
1002 g_debug ("Unable to create seat: %s", seat_name);
1006 started = display_manager_add_seat (display_manager, seat);
1008 g_debug ("Failed to start seat: %s", seat_name);
1011 g_free (config_section);
1012 g_object_unref (seat);
1018 login1_service_seat_added_cb (Login1Service *service, Login1Seat *login1_seat)
1020 add_login1_seat (login1_seat);
1024 login1_service_seat_removed_cb (Login1Service *service, Login1Seat *login1_seat)
1028 g_debug ("Seat removed from logind: %s", login1_seat_get_id (login1_seat));
1029 seat = display_manager_get_seat (display_manager, login1_seat_get_id (login1_seat));
1035 main (int argc, char **argv)
1038 GOptionContext *option_context;
1041 gboolean test_mode = FALSE;
1042 gchar *pid_path = "/var/run/lightdm.pid";
1043 gchar *log_dir = NULL;
1044 gchar *run_dir = NULL;
1045 gchar *cache_dir = NULL;
1046 gchar *default_log_dir = g_strdup (LOG_DIR);
1047 gchar *default_run_dir = g_strdup (RUN_DIR);
1048 gchar *default_cache_dir = g_strdup (CACHE_DIR);
1049 gboolean show_config = FALSE, show_version = FALSE;
1050 GList *link, *messages = NULL;
1051 GOptionEntry options[] =
1053 { "config", 'c', 0, G_OPTION_ARG_STRING, &config_path,
1054 /* Help string for command line --config flag */
1055 N_("Use configuration file"), "FILE" },
1056 { "debug", 'd', 0, G_OPTION_ARG_NONE, &debug,
1057 /* Help string for command line --debug flag */
1058 N_("Print debugging messages"), NULL },
1059 { "test-mode", 0, 0, G_OPTION_ARG_NONE, &test_mode,
1060 /* Help string for command line --test-mode flag */
1061 N_("Run as unprivileged user, skipping things that require root access"), NULL },
1062 { "pid-file", 0, 0, G_OPTION_ARG_STRING, &pid_path,
1063 /* Help string for command line --pid-file flag */
1064 N_("File to write PID into"), "FILE" },
1065 { "log-dir", 0, 0, G_OPTION_ARG_STRING, &log_dir,
1066 /* Help string for command line --log-dir flag */
1067 N_("Directory to write logs to"), "DIRECTORY" },
1068 { "run-dir", 0, 0, G_OPTION_ARG_STRING, &run_dir,
1069 /* Help string for command line --run-dir flag */
1070 N_("Directory to store running state"), "DIRECTORY" },
1071 { "cache-dir", 0, 0, G_OPTION_ARG_STRING, &cache_dir,
1072 /* Help string for command line --cache-dir flag */
1073 N_("Directory to cache information"), "DIRECTORY" },
1074 { "show-config", 0, 0, G_OPTION_ARG_NONE, &show_config,
1075 /* Help string for command line --show-config flag */
1076 N_("Show combined configuration"), NULL },
1077 { "version", 'v', 0, G_OPTION_ARG_NONE, &show_version,
1078 /* Help string for command line --version flag */
1079 N_("Show release version"), NULL },
1082 GError *error = NULL;
1084 /* When lightdm starts sessions it needs to run itself in a new mode */
1085 if (argc >= 2 && strcmp (argv[1], "--session-child") == 0)
1086 return session_child_run (argc, argv);
1088 #if !defined(GLIB_VERSION_2_36)
1091 loop = g_main_loop_new (NULL, FALSE);
1093 messages = g_list_append (messages, g_strdup_printf ("Starting Light Display Manager %s, UID=%i PID=%i", VERSION, getuid (), getpid ()));
1095 g_signal_connect (process_get_current (), "got-signal", G_CALLBACK (signal_cb), NULL);
1097 option_context = g_option_context_new (/* Arguments and description for --help test */
1098 _("- Display Manager"));
1099 g_option_context_add_main_entries (option_context, options, GETTEXT_PACKAGE);
1100 result = g_option_context_parse (option_context, &argc, &argv, &error);
1102 g_printerr ("%s\n", error->message);
1103 g_clear_error (&error);
1104 g_option_context_free (option_context);
1107 g_printerr (/* Text printed out when an unknown command-line argument provided */
1108 _("Run '%s --help' to see a full list of available command line options."), argv[0]);
1110 return EXIT_FAILURE;
1113 /* Show combined configuration if user requested it */
1116 GList *sources, *link;
1117 gchar **groups, *last_source, *empty_source;
1118 GHashTable *source_ids;
1121 if (!config_load_from_standard_locations (config_get_instance (), config_path, NULL))
1122 return EXIT_FAILURE;
1124 /* Number sources */
1125 sources = config_get_sources (config_get_instance ());
1126 source_ids = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1128 for (i = 0, link = sources; link; i++, link = link->next)
1134 id = g_strdup_printf ("%c", 'A' + i);
1136 id = g_strdup_printf ("%d", i);
1137 g_hash_table_insert (source_ids, g_strdup (path), id);
1140 empty_source = g_strdup (last_source);
1141 for (i = 0; empty_source[i] != '\0'; i++)
1142 empty_source[i] = ' ';
1144 /* Print out keys */
1145 groups = config_get_groups (config_get_instance ());
1146 for (i = 0; groups[i]; i++)
1153 g_printerr ("%s [%s]\n", empty_source, groups[i]);
1155 keys = config_get_keys (config_get_instance (), groups[i]);
1156 for (j = 0; keys && keys[j]; j++)
1158 const gchar *source, *id;
1161 source = config_get_source (config_get_instance (), groups[i], keys[j]);
1162 id = source ? g_hash_table_lookup (source_ids, source) : empty_source;
1163 value = config_get_string (config_get_instance (), groups[i], keys[j]);
1164 g_printerr ("%s %s=%s\n", id, keys[j], value);
1170 g_strfreev (groups);
1172 /* Show mapping from source number to path */
1174 g_printerr ("Sources:\n");
1175 for (link = sources; link; link = link->next)
1177 const gchar *path = link->data;
1178 const gchar *source;
1180 source = g_hash_table_lookup (source_ids, path);
1181 g_printerr ("%s %s\n", source, path);
1184 g_hash_table_destroy (source_ids);
1186 return EXIT_SUCCESS;
1191 /* NOTE: Is not translated so can be easily parsed */
1192 g_printerr ("lightdm %s\n", VERSION);
1193 return EXIT_SUCCESS;
1196 if (!test_mode && getuid () != 0)
1198 g_printerr ("Only root can run Light Display Manager. To run as a regular user for testing run with the --test-mode flag.\n");
1199 return EXIT_FAILURE;
1202 /* If running inside an X server use Xephyr for display */
1203 if (getenv ("DISPLAY") && getuid () != 0)
1205 gchar *x_server_path;
1207 x_server_path = g_find_program_in_path ("Xephyr");
1210 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");
1211 return EXIT_FAILURE;
1213 g_free (x_server_path);
1216 /* Make sure the system binary directory (where the greeters are installed) is in the path */
1219 const gchar *path = g_getenv ("PATH");
1223 new_path = g_strdup_printf ("%s:%s", path, SBIN_DIR);
1225 new_path = g_strdup (SBIN_DIR);
1226 g_setenv ("PATH", new_path, TRUE);
1230 /* Write PID file */
1231 pid_file = fopen (pid_path, "w");
1234 fprintf (pid_file, "%d\n", getpid ());
1238 /* If not running as root write output to directories we control */
1241 g_free (default_log_dir);
1242 default_log_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "log", NULL);
1243 g_free (default_run_dir);
1244 default_run_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "run", NULL);
1245 g_free (default_cache_dir);
1246 default_cache_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "cache", NULL);
1249 /* Load config file(s) */
1250 if (!config_load_from_standard_locations (config_get_instance (), config_path, &messages))
1251 exit (EXIT_FAILURE);
1252 g_free (config_path);
1254 /* Set default values */
1255 if (!config_has_key (config_get_instance (), "LightDM", "start-default-seat"))
1256 config_set_boolean (config_get_instance (), "LightDM", "start-default-seat", TRUE);
1257 if (!config_has_key (config_get_instance (), "LightDM", "minimum-vt"))
1258 config_set_integer (config_get_instance (), "LightDM", "minimum-vt", 7);
1259 if (!config_has_key (config_get_instance (), "LightDM", "guest-account-script"))
1260 config_set_string (config_get_instance (), "LightDM", "guest-account-script", "guest-account");
1261 if (!config_has_key (config_get_instance (), "LightDM", "greeter-user"))
1262 config_set_string (config_get_instance (), "LightDM", "greeter-user", GREETER_USER);
1263 if (!config_has_key (config_get_instance (), "LightDM", "lock-memory"))
1264 config_set_boolean (config_get_instance (), "LightDM", "lock-memory", TRUE);
1265 if (!config_has_key (config_get_instance (), "SeatDefaults", "type"))
1266 config_set_string (config_get_instance (), "SeatDefaults", "type", "xlocal");
1267 if (!config_has_key (config_get_instance (), "SeatDefaults", "pam-service"))
1268 config_set_string (config_get_instance (), "SeatDefaults", "pam-service", "lightdm");
1269 if (!config_has_key (config_get_instance (), "SeatDefaults", "pam-autologin-service"))
1270 config_set_string (config_get_instance (), "SeatDefaults", "pam-autologin-service", "lightdm-autologin");
1271 if (!config_has_key (config_get_instance (), "SeatDefaults", "pam-greeter-service"))
1272 config_set_string (config_get_instance (), "SeatDefaults", "pam-greeter-service", "lightdm-greeter");
1273 if (!config_has_key (config_get_instance (), "SeatDefaults", "xserver-command"))
1274 config_set_string (config_get_instance (), "SeatDefaults", "xserver-command", "X");
1275 if (!config_has_key (config_get_instance (), "SeatDefaults", "xserver-share"))
1276 config_set_boolean (config_get_instance (), "SeatDefaults", "xserver-share", TRUE);
1277 if (!config_has_key (config_get_instance (), "SeatDefaults", "unity-compositor-command"))
1278 config_set_string (config_get_instance (), "SeatDefaults", "unity-compositor-command", "unity-system-compositor");
1279 if (!config_has_key (config_get_instance (), "SeatDefaults", "start-session"))
1280 config_set_boolean (config_get_instance (), "SeatDefaults", "start-session", TRUE);
1281 if (!config_has_key (config_get_instance (), "SeatDefaults", "allow-user-switching"))
1282 config_set_boolean (config_get_instance (), "SeatDefaults", "allow-user-switching", TRUE);
1283 if (!config_has_key (config_get_instance (), "SeatDefaults", "allow-guest"))
1284 config_set_boolean (config_get_instance (), "SeatDefaults", "allow-guest", TRUE);
1285 if (!config_has_key (config_get_instance (), "SeatDefaults", "greeter-allow-guest"))
1286 config_set_boolean (config_get_instance (), "SeatDefaults", "greeter-allow-guest", TRUE);
1287 if (!config_has_key (config_get_instance (), "SeatDefaults", "greeter-show-remote-login"))
1288 config_set_boolean (config_get_instance (), "SeatDefaults", "greeter-show-remote-login", TRUE);
1289 if (!config_has_key (config_get_instance (), "SeatDefaults", "greeter-session"))
1290 config_set_string (config_get_instance (), "SeatDefaults", "greeter-session", GREETER_SESSION);
1291 if (!config_has_key (config_get_instance (), "SeatDefaults", "user-session"))
1292 config_set_string (config_get_instance (), "SeatDefaults", "user-session", USER_SESSION);
1293 if (!config_has_key (config_get_instance (), "SeatDefaults", "session-wrapper"))
1294 config_set_string (config_get_instance (), "SeatDefaults", "session-wrapper", "lightdm-session");
1295 if (!config_has_key (config_get_instance (), "LightDM", "log-directory"))
1296 config_set_string (config_get_instance (), "LightDM", "log-directory", default_log_dir);
1297 g_free (default_log_dir);
1298 if (!config_has_key (config_get_instance (), "LightDM", "run-directory"))
1299 config_set_string (config_get_instance (), "LightDM", "run-directory", default_run_dir);
1300 g_free (default_run_dir);
1301 if (!config_has_key (config_get_instance (), "LightDM", "cache-directory"))
1302 config_set_string (config_get_instance (), "LightDM", "cache-directory", default_cache_dir);
1303 g_free (default_cache_dir);
1304 if (!config_has_key (config_get_instance (), "LightDM", "sessions-directory"))
1305 config_set_string (config_get_instance (), "LightDM", "sessions-directory", SESSIONS_DIR);
1306 if (!config_has_key (config_get_instance (), "LightDM", "remote-sessions-directory"))
1307 config_set_string (config_get_instance (), "LightDM", "remote-sessions-directory", REMOTE_SESSIONS_DIR);
1308 if (!config_has_key (config_get_instance (), "LightDM", "greeters-directory"))
1309 config_set_string (config_get_instance (), "LightDM", "greeters-directory", GREETERS_DIR);
1311 /* Override defaults */
1313 config_set_string (config_get_instance (), "LightDM", "log-directory", log_dir);
1316 config_set_string (config_get_instance (), "LightDM", "run-directory", run_dir);
1319 config_set_string (config_get_instance (), "LightDM", "cache-directory", cache_dir);
1322 /* Create run and cache directories */
1323 dir = config_get_string (config_get_instance (), "LightDM", "log-directory");
1324 if (g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH) < 0)
1325 g_warning ("Failed to make log directory %s: %s", dir, strerror (errno));
1327 dir = config_get_string (config_get_instance (), "LightDM", "run-directory");
1328 if (g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH) < 0)
1329 g_warning ("Failed to make run directory %s: %s", dir, strerror (errno));
1331 dir = config_get_string (config_get_instance (), "LightDM", "cache-directory");
1332 if (g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH) < 0)
1333 g_warning ("Failed to make cache directory %s: %s", dir, strerror (errno));
1338 /* Show queued messages once logging is complete */
1339 for (link = messages; link; link = link->next)
1340 g_debug ("%s", (gchar *)link->data);
1341 g_list_free_full (messages, g_free);
1343 g_debug ("Using D-Bus name %s", LIGHTDM_BUS_NAME);
1344 bus_id = g_bus_own_name (getuid () == 0 ? G_BUS_TYPE_SYSTEM : G_BUS_TYPE_SESSION,
1346 G_BUS_NAME_OWNER_FLAGS_NONE,
1354 g_debug ("Running in user mode");
1355 if (getenv ("DISPLAY"))
1356 g_debug ("Using Xephyr for X servers");
1358 display_manager = display_manager_new ();
1359 g_signal_connect (display_manager, "stopped", G_CALLBACK (display_manager_stopped_cb), NULL);
1360 g_signal_connect (display_manager, "seat-removed", G_CALLBACK (display_manager_seat_removed_cb), NULL);
1362 shared_data_manager_start (shared_data_manager_get_instance ());
1364 /* Connect to logind */
1365 if (login1_service_connect (login1_service_get_instance ()))
1367 /* Load dynamic seats from logind */
1368 g_debug ("Monitoring logind for seats");
1370 if (config_get_boolean (config_get_instance (), "LightDM", "start-default-seat"))
1372 g_signal_connect (login1_service_get_instance (), "seat-added", G_CALLBACK (login1_service_seat_added_cb), NULL);
1373 g_signal_connect (login1_service_get_instance (), "seat-removed", G_CALLBACK (login1_service_seat_removed_cb), NULL);
1375 for (link = login1_service_get_seats (login1_service_get_instance ()); link; link = link->next)
1377 Login1Seat *seat = link->data;
1378 if (!add_login1_seat (seat))
1379 return EXIT_FAILURE;
1385 if (config_get_boolean (config_get_instance (), "LightDM", "start-default-seat"))
1391 g_debug ("Adding default seat");
1393 types = config_get_string_list (config_get_instance (), "SeatDefaults", "type");
1394 for (type = types; type && *type; type++)
1396 seat = seat_new (*type, "seat0");
1403 set_seat_properties (seat, NULL);
1404 seat_set_property (seat, "exit-on-failure", "true");
1405 if (!display_manager_add_seat (display_manager, seat))
1406 return EXIT_FAILURE;
1407 g_object_unref (seat);
1411 g_warning ("Failed to create default seat");
1412 return EXIT_FAILURE;
1417 g_main_loop_run (loop);
1419 /* Clean up shared data manager */
1420 shared_data_manager_cleanup ();
1422 /* Clean up user list */
1423 common_user_list_cleanup ();
1425 /* Clean up display manager */
1426 g_object_unref (display_manager);
1427 display_manager = NULL;
1429 /* Remove D-Bus interface */
1430 g_dbus_connection_unregister_object (bus, reg_id);
1431 g_bus_unown_name (bus_id);
1432 if (seat_bus_entries)
1433 g_hash_table_unref (seat_bus_entries);
1434 if (session_bus_entries)
1435 g_hash_table_unref (session_bus_entries);
1437 g_debug ("Exiting with return value %d", exit_code);