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_suffix = *i + strlen ("Seat:");
160 gchar *seat_name_globbing;
163 if (g_str_has_suffix (seat_name_suffix, "*"))
164 seat_name_globbing = g_strndup (seat_name_suffix, strlen (seat_name_suffix) - 1);
166 seat_name_globbing = g_strdup (seat_name_suffix);
168 matches = g_str_has_prefix (seat_name, seat_name_globbing);
169 g_free (seat_name_globbing);
173 config_section = g_strdup (*i);
179 return config_section;
183 set_seat_properties (Seat *seat, const gchar *config_section)
188 keys = config_get_keys (config_get_instance (), "SeatDefaults");
189 for (i = 0; keys && keys[i]; i++)
191 gchar *value = config_get_string (config_get_instance (), "SeatDefaults", keys[i]);
192 seat_set_property (seat, keys[i], value);
199 keys = config_get_keys (config_get_instance (), config_section);
200 for (i = 0; keys && keys[i]; i++)
202 gchar *value = config_get_string (config_get_instance (), config_section, keys[i]);
203 seat_set_property (seat, keys[i], value);
211 signal_cb (Process *process, int signum)
213 g_debug ("Caught %s signal, shutting down", g_strsignal (signum));
214 display_manager_stop (display_manager);
215 // FIXME: Stop XDMCP server
219 display_manager_stopped_cb (DisplayManager *display_manager)
221 g_debug ("Stopping daemon");
222 g_main_loop_quit (loop);
226 display_manager_seat_removed_cb (DisplayManager *display_manager, Seat *seat)
230 Seat *next_seat = NULL;
233 /* If we have fallback types registered for the seat, let's try them
235 types = seat_get_string_list_property (seat, "type");
236 next_types = g_string_new ("");
237 for (iter = types; iter && *iter; iter++)
240 continue; // skip first one, that is our current seat type
244 next_seat = seat_new (*iter, seat_get_name (seat));
245 g_string_assign (next_types, *iter);
249 // Build up list of types to try next time
250 g_string_append_c (next_types, ';');
251 g_string_append (next_types, *iter);
258 gchar *config_section;
260 config_section = get_config_section (seat_get_name (seat));
261 set_seat_properties (next_seat, config_section);
262 g_free (config_section);
264 // We set this manually on default seat. Let's port it over if needed.
265 if (seat_get_boolean_property (seat, "exit-on-failure"))
266 seat_set_property (next_seat, "exit-on-failure", "true");
268 seat_set_property (next_seat, "type", next_types->str);
270 display_manager_add_seat (display_manager, next_seat);
271 g_object_unref (next_seat);
273 else if (seat_get_boolean_property (seat, "exit-on-failure"))
275 g_debug ("Required seat has stopped");
276 exit_code = EXIT_FAILURE;
277 display_manager_stop (display_manager);
280 g_string_free (next_types, TRUE);
286 GVariantBuilder builder;
290 g_variant_builder_init (&builder, G_VARIANT_TYPE ("ao"));
291 g_hash_table_iter_init (&iter, seat_bus_entries);
292 while (g_hash_table_iter_next (&iter, NULL, &value))
294 SeatBusEntry *entry = value;
295 g_variant_builder_add_value (&builder, g_variant_new_object_path (entry->path));
298 return g_variant_builder_end (&builder);
302 get_session_list (const gchar *seat_path)
304 GVariantBuilder builder;
308 g_variant_builder_init (&builder, G_VARIANT_TYPE ("ao"));
310 g_hash_table_iter_init (&iter, session_bus_entries);
311 while (g_hash_table_iter_next (&iter, NULL, &value))
313 SessionBusEntry *entry = value;
314 if (seat_path == NULL || strcmp (entry->seat_path, seat_path) == 0)
315 g_variant_builder_add_value (&builder, g_variant_new_object_path (entry->path));
318 return g_variant_builder_end (&builder);
322 handle_display_manager_get_property (GDBusConnection *connection,
324 const gchar *object_path,
325 const gchar *interface_name,
326 const gchar *property_name,
330 if (g_strcmp0 (property_name, "Seats") == 0)
331 return get_seat_list ();
332 else if (g_strcmp0 (property_name, "Sessions") == 0)
333 return get_session_list (NULL);
339 handle_display_manager_call (GDBusConnection *connection,
341 const gchar *object_path,
342 const gchar *interface_name,
343 const gchar *method_name,
344 GVariant *parameters,
345 GDBusMethodInvocation *invocation,
348 if (g_strcmp0 (method_name, "AddSeat") == 0)
349 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "AddSeat is deprecated");
350 else if (g_strcmp0 (method_name, "AddLocalXSeat") == 0)
355 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(i)")))
357 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
361 g_variant_get (parameters, "(i)", &display_number);
363 g_debug ("Adding local X seat :%d", display_number);
365 seat = seat_new ("xremote", "xremote0"); // FIXME: What to use for a name?
368 gchar *display_number_string;
370 set_seat_properties (seat, NULL);
371 display_number_string = g_strdup_printf ("%d", display_number);
372 seat_set_property (seat, "xserver-display-number", display_number_string);
373 g_free (display_number_string);
378 // FIXME: Need to make proper error
379 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Unable to create local X seat");
383 if (display_manager_add_seat (display_manager, seat))
387 entry = g_hash_table_lookup (seat_bus_entries, seat);
388 g_dbus_method_invocation_return_value (invocation, g_variant_new ("(o)", entry->path));
390 else// FIXME: Need to make proper error
391 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to start seat");
392 g_object_unref (seat);
395 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD, "Unknown method");
399 handle_seat_get_property (GDBusConnection *connection,
401 const gchar *object_path,
402 const gchar *interface_name,
403 const gchar *property_name,
407 Seat *seat = user_data;
409 if (g_strcmp0 (property_name, "CanSwitch") == 0)
410 return g_variant_new_boolean (seat_get_can_switch (seat));
411 if (g_strcmp0 (property_name, "HasGuestAccount") == 0)
412 return g_variant_new_boolean (seat_get_allow_guest (seat));
413 else if (g_strcmp0 (property_name, "Sessions") == 0)
417 entry = g_hash_table_lookup (seat_bus_entries, seat);
418 return get_session_list (entry->path);
425 handle_seat_call (GDBusConnection *connection,
427 const gchar *object_path,
428 const gchar *interface_name,
429 const gchar *method_name,
430 GVariant *parameters,
431 GDBusMethodInvocation *invocation,
434 Seat *seat = user_data;
436 if (g_strcmp0 (method_name, "SwitchToGreeter") == 0)
438 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("()")))
439 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
441 if (seat_switch_to_greeter (seat))
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 greeter");
446 else if (g_strcmp0 (method_name, "SwitchToUser") == 0)
448 const gchar *username, *session_name;
450 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(ss)")))
451 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
453 g_variant_get (parameters, "(&s&s)", &username, &session_name);
454 if (strcmp (session_name, "") == 0)
457 if (seat_switch_to_user (seat, username, session_name))
458 g_dbus_method_invocation_return_value (invocation, NULL);
459 else// FIXME: Need to make proper error
460 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to switch to user");
462 else if (g_strcmp0 (method_name, "SwitchToGuest") == 0)
464 const gchar *session_name;
466 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(s)")))
467 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
469 g_variant_get (parameters, "(&s)", &session_name);
470 if (strcmp (session_name, "") == 0)
473 if (seat_switch_to_guest (seat, session_name))
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 switch to guest");
478 else if (g_strcmp0 (method_name, "Lock") == 0)
480 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("()")))
481 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
483 /* FIXME: Should only allow locks if have a session on this seat */
484 if (seat_lock (seat, NULL))
485 g_dbus_method_invocation_return_value (invocation, NULL);
486 else// FIXME: Need to make proper error
487 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to lock seat");
490 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD, "Unknown method");
494 get_seat_for_session (Session *session)
498 for (seat_link = display_manager_get_seats (display_manager); seat_link; seat_link = seat_link->next)
500 Seat *seat = seat_link->data;
503 for (session_link = seat_get_sessions (seat); session_link; session_link = session_link->next)
505 Session *s = session_link->data;
516 handle_session_get_property (GDBusConnection *connection,
518 const gchar *object_path,
519 const gchar *interface_name,
520 const gchar *property_name,
524 Session *session = user_data;
525 SessionBusEntry *entry;
527 entry = g_hash_table_lookup (session_bus_entries, session);
528 if (g_strcmp0 (property_name, "Seat") == 0)
529 return g_variant_new_object_path (entry ? entry->seat_path : "");
530 else if (g_strcmp0 (property_name, "UserName") == 0)
531 return g_variant_new_string (session_get_username (session));
537 handle_session_call (GDBusConnection *connection,
539 const gchar *object_path,
540 const gchar *interface_name,
541 const gchar *method_name,
542 GVariant *parameters,
543 GDBusMethodInvocation *invocation,
546 Session *session = user_data;
548 if (g_strcmp0 (method_name, "Lock") == 0)
552 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("()")))
553 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, "Invalid arguments");
555 seat = get_seat_for_session (session);
556 /* FIXME: Should only allow locks if have a session on this seat */
557 seat_lock (seat, session_get_username (session));
558 g_dbus_method_invocation_return_value (invocation, NULL);
561 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD, "Unknown method");
564 static SeatBusEntry *
565 seat_bus_entry_new (const gchar *path)
569 entry = g_malloc0 (sizeof (SeatBusEntry));
570 entry->path = g_strdup (path);
575 static SessionBusEntry *
576 session_bus_entry_new (const gchar *path, const gchar *seat_path)
578 SessionBusEntry *entry;
580 entry = g_malloc0 (sizeof (SessionBusEntry));
581 entry->path = g_strdup (path);
582 entry->seat_path = g_strdup (seat_path);
588 emit_object_value_changed (GDBusConnection *bus, const gchar *path, const gchar *interface_name, const gchar *property_name, GVariant *property_value)
590 GVariantBuilder builder;
591 GError *error = NULL;
593 g_variant_builder_init (&builder, G_VARIANT_TYPE_ARRAY);
594 g_variant_builder_add (&builder, "{sv}", property_name, property_value);
596 if (!g_dbus_connection_emit_signal (bus,
599 "org.freedesktop.DBus.Properties",
601 g_variant_new ("(sa{sv}as)", interface_name, &builder, NULL),
603 g_warning ("Failed to emit PropertiesChanged signal: %s", error->message);
604 g_clear_error (&error);
608 emit_object_signal (GDBusConnection *bus, const gchar *path, const gchar *signal_name, const gchar *object_path)
610 GError *error = NULL;
612 if (!g_dbus_connection_emit_signal (bus,
615 "org.freedesktop.DisplayManager",
617 g_variant_new ("(o)", object_path),
619 g_warning ("Failed to emit %s signal on %s: %s", signal_name, path, error->message);
620 g_clear_error (&error);
624 seat_bus_entry_free (gpointer data)
626 SeatBusEntry *entry = data;
628 g_dbus_connection_unregister_object (bus, entry->bus_id);
630 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Seats", get_seat_list ());
631 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SeatRemoved", entry->path);
633 g_free (entry->path);
638 session_bus_entry_free (gpointer data)
640 SessionBusEntry *entry = data;
642 g_dbus_connection_unregister_object (bus, entry->bus_id);
644 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Sessions", get_session_list (NULL));
645 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SessionRemoved", entry->path);
647 emit_object_value_changed (bus, entry->seat_path, "org.freedesktop.DisplayManager.Seat", "Sessions", get_session_list (entry->seat_path));
648 emit_object_signal (bus, entry->seat_path, "SessionRemoved", entry->path);
650 g_free (entry->path);
651 g_free (entry->seat_path);
656 running_user_session_cb (Seat *seat, Session *session)
658 static const GDBusInterfaceVTable session_vtable =
661 handle_session_get_property
663 SeatBusEntry *seat_entry;
664 SessionBusEntry *session_entry;
666 GError *error = NULL;
668 /* Set environment variables when session runs */
669 seat_entry = g_hash_table_lookup (seat_bus_entries, seat);
670 session_set_env (session, "XDG_SEAT_PATH", seat_entry->path);
671 path = g_strdup_printf ("/org/freedesktop/DisplayManager/Session%d", session_index);
673 session_set_env (session, "XDG_SESSION_PATH", path);
674 g_object_set_data_full (G_OBJECT (session), "XDG_SESSION_PATH", path, g_free);
676 seat_entry = g_hash_table_lookup (seat_bus_entries, seat);
677 session_entry = session_bus_entry_new (g_object_get_data (G_OBJECT (session), "XDG_SESSION_PATH"), seat_entry ? seat_entry->path : NULL);
678 g_hash_table_insert (session_bus_entries, g_object_ref (session), session_entry);
680 g_debug ("Registering session with bus path %s", session_entry->path);
682 session_entry->bus_id = g_dbus_connection_register_object (bus,
684 session_info->interfaces[0],
686 g_object_ref (session), g_object_unref,
688 if (session_entry->bus_id == 0)
689 g_warning ("Failed to register user session: %s", error->message);
690 g_clear_error (&error);
692 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Sessions", get_session_list (NULL));
693 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SessionAdded", session_entry->path);
695 emit_object_value_changed (bus, seat_entry->path, "org.freedesktop.DisplayManager.Seat", "Sessions", get_session_list (session_entry->seat_path));
696 emit_object_signal (bus, seat_entry->path, "SessionAdded", session_entry->path);
700 session_removed_cb (Seat *seat, Session *session)
702 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
703 g_hash_table_remove (session_bus_entries, session);
707 seat_added_cb (DisplayManager *display_manager, Seat *seat)
709 static const GDBusInterfaceVTable seat_vtable =
712 handle_seat_get_property
716 GError *error = NULL;
718 path = g_strdup_printf ("/org/freedesktop/DisplayManager/Seat%d", seat_index);
721 entry = seat_bus_entry_new (path);
723 g_hash_table_insert (seat_bus_entries, g_object_ref (seat), entry);
725 g_debug ("Registering seat with bus path %s", entry->path);
727 entry->bus_id = g_dbus_connection_register_object (bus,
729 seat_info->interfaces[0],
731 g_object_ref (seat), g_object_unref,
733 if (entry->bus_id == 0)
734 g_warning ("Failed to register seat: %s", error->message);
735 g_clear_error (&error);
737 emit_object_value_changed (bus, "/org/freedesktop/DisplayManager", "org.freedesktop.DisplayManager", "Seats", get_seat_list ());
738 emit_object_signal (bus, "/org/freedesktop/DisplayManager", "SeatAdded", entry->path);
740 g_signal_connect (seat, "running-user-session", G_CALLBACK (running_user_session_cb), NULL);
741 g_signal_connect (seat, "session-removed", G_CALLBACK (session_removed_cb), NULL);
745 seat_removed_cb (DisplayManager *display_manager, Seat *seat)
747 g_hash_table_remove (seat_bus_entries, seat);
751 xdmcp_session_cb (XDMCPServer *server, XDMCPSession *session)
753 SeatXDMCPSession *seat;
756 seat = seat_xdmcp_session_new (session);
757 set_seat_properties (SEAT (seat), NULL);
758 result = display_manager_add_seat (display_manager, SEAT (seat));
759 g_object_unref (seat);
765 vnc_connection_cb (VNCServer *server, GSocket *connection)
769 seat = seat_xvnc_new (connection);
770 set_seat_properties (SEAT (seat), NULL);
771 display_manager_add_seat (display_manager, SEAT (seat));
772 g_object_unref (seat);
776 bus_acquired_cb (GDBusConnection *connection,
780 const gchar *display_manager_interface =
782 " <interface name='org.freedesktop.DisplayManager'>"
783 " <property name='Seats' type='ao' access='read'/>"
784 " <property name='Sessions' type='ao' access='read'/>"
785 " <method name='AddSeat'>"
786 " <arg name='type' direction='in' type='s'/>"
787 " <arg name='properties' direction='in' type='a(ss)'/>"
788 " <arg name='seat' direction='out' type='o'/>"
790 " <method name='AddLocalXSeat'>"
791 " <arg name='display-number' direction='in' type='i'/>"
792 " <arg name='seat' direction='out' type='o'/>"
794 " <signal name='SeatAdded'>"
795 " <arg name='seat' type='o'/>"
797 " <signal name='SeatRemoved'>"
798 " <arg name='seat' type='o'/>"
800 " <signal name='SessionAdded'>"
801 " <arg name='session' type='o'/>"
803 " <signal name='SessionRemoved'>"
804 " <arg name='session' type='o'/>"
808 static const GDBusInterfaceVTable display_manager_vtable =
810 handle_display_manager_call,
811 handle_display_manager_get_property
813 const gchar *seat_interface =
815 " <interface name='org.freedesktop.DisplayManager.Seat'>"
816 " <property name='CanSwitch' type='b' access='read'/>"
817 " <property name='HasGuestAccount' type='b' access='read'/>"
818 " <property name='Sessions' type='ao' access='read'/>"
819 " <method name='SwitchToGreeter'/>"
820 " <method name='SwitchToUser'>"
821 " <arg name='username' direction='in' type='s'/>"
822 " <arg name='session-name' direction='in' type='s'/>"
824 " <method name='SwitchToGuest'>"
825 " <arg name='session-name' direction='in' type='s'/>"
827 " <method name='Lock'/>"
828 " <signal name='SessionAdded'>"
829 " <arg name='session' type='o'/>"
831 " <signal name='SessionRemoved'>"
832 " <arg name='session' type='o'/>"
836 const gchar *session_interface =
838 " <interface name='org.freedesktop.DisplayManager.Session'>"
839 " <property name='Seat' type='o' access='read'/>"
840 " <property name='UserName' type='s' access='read'/>"
841 " <method name='Lock'/>"
844 GDBusNodeInfo *display_manager_info;
846 GError *error = NULL;
848 g_debug ("Acquired bus name %s", name);
852 display_manager_info = g_dbus_node_info_new_for_xml (display_manager_interface, NULL);
853 g_assert (display_manager_info != NULL);
854 seat_info = g_dbus_node_info_new_for_xml (seat_interface, NULL);
855 g_assert (seat_info != NULL);
856 session_info = g_dbus_node_info_new_for_xml (session_interface, NULL);
857 g_assert (session_info != NULL);
859 reg_id = g_dbus_connection_register_object (connection,
860 "/org/freedesktop/DisplayManager",
861 display_manager_info->interfaces[0],
862 &display_manager_vtable,
866 g_warning ("Failed to register display manager: %s", error->message);
867 g_clear_error (&error);
868 g_dbus_node_info_unref (display_manager_info);
870 seat_bus_entries = g_hash_table_new_full (g_direct_hash, g_direct_equal, g_object_unref, seat_bus_entry_free);
871 session_bus_entries = g_hash_table_new_full (g_direct_hash, g_direct_equal, g_object_unref, session_bus_entry_free);
873 g_signal_connect (display_manager, "seat-added", G_CALLBACK (seat_added_cb), NULL);
874 g_signal_connect (display_manager, "seat-removed", G_CALLBACK (seat_removed_cb), NULL);
875 for (link = display_manager_get_seats (display_manager); link; link = link->next)
876 seat_added_cb (display_manager, (Seat *) link->data);
878 display_manager_start (display_manager);
880 /* Start the XDMCP server */
881 if (config_get_boolean (config_get_instance (), "XDMCPServer", "enabled"))
883 gchar *key_name, *key = NULL;
885 xdmcp_server = xdmcp_server_new ();
886 if (config_has_key (config_get_instance (), "XDMCPServer", "port"))
889 port = config_get_integer (config_get_instance (), "XDMCPServer", "port");
891 xdmcp_server_set_port (xdmcp_server, port);
893 g_signal_connect (xdmcp_server, "new-session", G_CALLBACK (xdmcp_session_cb), NULL);
895 key_name = config_get_string (config_get_instance (), "XDMCPServer", "key");
901 GError *error = NULL;
903 path = g_build_filename (config_get_directory (config_get_instance ()), "keys.conf", NULL);
905 keys = g_key_file_new ();
906 result = g_key_file_load_from_file (keys, path, G_KEY_FILE_NONE, &error);
908 g_debug ("Error getting key %s", error->message);
909 g_clear_error (&error);
913 if (g_key_file_has_key (keys, "keyring", key_name, NULL))
914 key = g_key_file_get_string (keys, "keyring", key_name, NULL);
916 g_debug ("Key %s not defined", key_name);
919 g_key_file_free (keys);
922 xdmcp_server_set_key (xdmcp_server, key);
926 g_debug ("Starting XDMCP server on UDP/IP port %d", xdmcp_server_get_port (xdmcp_server));
927 xdmcp_server_start (xdmcp_server);
930 /* Start the VNC server */
931 if (config_get_boolean (config_get_instance (), "VNCServer", "enabled"))
935 path = g_find_program_in_path ("Xvnc");
938 vnc_server = vnc_server_new ();
939 if (config_has_key (config_get_instance (), "VNCServer", "port"))
942 port = config_get_integer (config_get_instance (), "VNCServer", "port");
944 vnc_server_set_port (vnc_server, port);
946 g_signal_connect (vnc_server, "new-connection", G_CALLBACK (vnc_connection_cb), NULL);
948 g_debug ("Starting VNC server on TCP/IP port %d", vnc_server_get_port (vnc_server));
949 vnc_server_start (vnc_server);
954 g_warning ("Can't start VNC server, Xvnc is not in the path");
959 name_lost_cb (GDBusConnection *connection,
964 g_printerr ("Failed to use bus name " LIGHTDM_BUS_NAME ", do you have appropriate permissions?\n");
966 g_printerr ("Failed to get D-Bus connection\n");
972 add_login1_seat (Login1Seat *login1_seat)
974 const gchar *seat_name = login1_seat_get_id (login1_seat);
975 gchar **types = NULL, **type;
976 gchar *config_section;
978 gboolean is_seat0, started = FALSE;
980 g_debug ("New seat added from logind: %s", seat_name);
981 is_seat0 = strcmp (seat_name, "seat0") == 0;
983 config_section = get_config_section (seat_name);
986 g_debug ("Loading properties from config section %s", config_section);
987 types = config_get_string_list (config_get_instance (), config_section, "type");
991 types = config_get_string_list (config_get_instance (), "SeatDefaults", "type");
992 for (type = types; !seat && type && *type; type++)
993 seat = seat_new (*type, seat_name);
998 set_seat_properties (seat, NULL);
1000 if (!login1_seat_get_can_multi_session (login1_seat))
1002 g_debug ("Seat %s has property CanMultiSession=no", seat_name);
1003 seat_set_property (seat, "allow-user-switching", "false");
1007 set_seat_properties (seat, config_section);
1010 seat_set_property (seat, "exit-on-failure", "true");
1013 g_debug ("Unable to create seat: %s", seat_name);
1017 started = display_manager_add_seat (display_manager, seat);
1019 g_debug ("Failed to start seat: %s", seat_name);
1022 g_free (config_section);
1023 g_object_unref (seat);
1029 login1_service_seat_added_cb (Login1Service *service, Login1Seat *login1_seat)
1031 add_login1_seat (login1_seat);
1035 login1_service_seat_removed_cb (Login1Service *service, Login1Seat *login1_seat)
1039 g_debug ("Seat removed from logind: %s", login1_seat_get_id (login1_seat));
1040 seat = display_manager_get_seat (display_manager, login1_seat_get_id (login1_seat));
1046 main (int argc, char **argv)
1049 GOptionContext *option_context;
1052 gboolean test_mode = FALSE;
1053 gchar *pid_path = "/var/run/lightdm.pid";
1054 gchar *log_dir = NULL;
1055 gchar *run_dir = NULL;
1056 gchar *cache_dir = NULL;
1057 gchar *default_log_dir = g_strdup (LOG_DIR);
1058 gchar *default_run_dir = g_strdup (RUN_DIR);
1059 gchar *default_cache_dir = g_strdup (CACHE_DIR);
1060 gboolean show_config = FALSE, show_version = FALSE;
1061 GList *link, *messages = NULL;
1062 GOptionEntry options[] =
1064 { "config", 'c', 0, G_OPTION_ARG_STRING, &config_path,
1065 /* Help string for command line --config flag */
1066 N_("Use configuration file"), "FILE" },
1067 { "debug", 'd', 0, G_OPTION_ARG_NONE, &debug,
1068 /* Help string for command line --debug flag */
1069 N_("Print debugging messages"), NULL },
1070 { "test-mode", 0, 0, G_OPTION_ARG_NONE, &test_mode,
1071 /* Help string for command line --test-mode flag */
1072 N_("Run as unprivileged user, skipping things that require root access"), NULL },
1073 { "pid-file", 0, 0, G_OPTION_ARG_STRING, &pid_path,
1074 /* Help string for command line --pid-file flag */
1075 N_("File to write PID into"), "FILE" },
1076 { "log-dir", 0, 0, G_OPTION_ARG_STRING, &log_dir,
1077 /* Help string for command line --log-dir flag */
1078 N_("Directory to write logs to"), "DIRECTORY" },
1079 { "run-dir", 0, 0, G_OPTION_ARG_STRING, &run_dir,
1080 /* Help string for command line --run-dir flag */
1081 N_("Directory to store running state"), "DIRECTORY" },
1082 { "cache-dir", 0, 0, G_OPTION_ARG_STRING, &cache_dir,
1083 /* Help string for command line --cache-dir flag */
1084 N_("Directory to cache information"), "DIRECTORY" },
1085 { "show-config", 0, 0, G_OPTION_ARG_NONE, &show_config,
1086 /* Help string for command line --show-config flag */
1087 N_("Show combined configuration"), NULL },
1088 { "version", 'v', 0, G_OPTION_ARG_NONE, &show_version,
1089 /* Help string for command line --version flag */
1090 N_("Show release version"), NULL },
1093 GError *error = NULL;
1095 /* When lightdm starts sessions it needs to run itself in a new mode */
1096 if (argc >= 2 && strcmp (argv[1], "--session-child") == 0)
1097 return session_child_run (argc, argv);
1099 #if !defined(GLIB_VERSION_2_36)
1102 loop = g_main_loop_new (NULL, FALSE);
1104 messages = g_list_append (messages, g_strdup_printf ("Starting Light Display Manager %s, UID=%i PID=%i", VERSION, getuid (), getpid ()));
1106 g_signal_connect (process_get_current (), "got-signal", G_CALLBACK (signal_cb), NULL);
1108 option_context = g_option_context_new (/* Arguments and description for --help test */
1109 _("- Display Manager"));
1110 g_option_context_add_main_entries (option_context, options, GETTEXT_PACKAGE);
1111 result = g_option_context_parse (option_context, &argc, &argv, &error);
1113 g_printerr ("%s\n", error->message);
1114 g_clear_error (&error);
1115 g_option_context_free (option_context);
1118 g_printerr (/* Text printed out when an unknown command-line argument provided */
1119 _("Run '%s --help' to see a full list of available command line options."), argv[0]);
1121 return EXIT_FAILURE;
1124 /* Show combined configuration if user requested it */
1127 GList *sources, *link;
1128 gchar **groups, *last_source, *empty_source;
1129 GHashTable *source_ids;
1132 if (!config_load_from_standard_locations (config_get_instance (), config_path, NULL))
1133 return EXIT_FAILURE;
1135 /* Number sources */
1136 sources = config_get_sources (config_get_instance ());
1137 source_ids = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
1139 for (i = 0, link = sources; link; i++, link = link->next)
1145 id = g_strdup_printf ("%c", 'A' + i);
1147 id = g_strdup_printf ("%d", i);
1148 g_hash_table_insert (source_ids, g_strdup (path), id);
1151 empty_source = g_strdup (last_source);
1152 for (i = 0; empty_source[i] != '\0'; i++)
1153 empty_source[i] = ' ';
1155 /* Print out keys */
1156 groups = config_get_groups (config_get_instance ());
1157 for (i = 0; groups[i]; i++)
1164 g_printerr ("%s [%s]\n", empty_source, groups[i]);
1166 keys = config_get_keys (config_get_instance (), groups[i]);
1167 for (j = 0; keys && keys[j]; j++)
1169 const gchar *source, *id;
1172 source = config_get_source (config_get_instance (), groups[i], keys[j]);
1173 id = source ? g_hash_table_lookup (source_ids, source) : empty_source;
1174 value = config_get_string (config_get_instance (), groups[i], keys[j]);
1175 g_printerr ("%s %s=%s\n", id, keys[j], value);
1181 g_strfreev (groups);
1183 /* Show mapping from source number to path */
1185 g_printerr ("Sources:\n");
1186 for (link = sources; link; link = link->next)
1188 const gchar *path = link->data;
1189 const gchar *source;
1191 source = g_hash_table_lookup (source_ids, path);
1192 g_printerr ("%s %s\n", source, path);
1195 g_hash_table_destroy (source_ids);
1197 return EXIT_SUCCESS;
1202 /* NOTE: Is not translated so can be easily parsed */
1203 g_printerr ("lightdm %s\n", VERSION);
1204 return EXIT_SUCCESS;
1207 if (!test_mode && getuid () != 0)
1209 g_printerr ("Only root can run Light Display Manager. To run as a regular user for testing run with the --test-mode flag.\n");
1210 return EXIT_FAILURE;
1213 /* If running inside an X server use Xephyr for display */
1214 if (getenv ("DISPLAY") && getuid () != 0)
1216 gchar *x_server_path;
1218 x_server_path = g_find_program_in_path ("Xephyr");
1221 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");
1222 return EXIT_FAILURE;
1224 g_free (x_server_path);
1227 /* Make sure the system binary directory (where the greeters are installed) is in the path */
1230 const gchar *path = g_getenv ("PATH");
1234 new_path = g_strdup_printf ("%s:%s", path, SBIN_DIR);
1236 new_path = g_strdup (SBIN_DIR);
1237 g_setenv ("PATH", new_path, TRUE);
1241 /* Write PID file */
1242 pid_file = fopen (pid_path, "w");
1245 fprintf (pid_file, "%d\n", getpid ());
1249 /* If not running as root write output to directories we control */
1252 g_free (default_log_dir);
1253 default_log_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "log", NULL);
1254 g_free (default_run_dir);
1255 default_run_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "run", NULL);
1256 g_free (default_cache_dir);
1257 default_cache_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "cache", NULL);
1260 /* Load config file(s) */
1261 if (!config_load_from_standard_locations (config_get_instance (), config_path, &messages))
1262 exit (EXIT_FAILURE);
1263 g_free (config_path);
1265 /* Set default values */
1266 if (!config_has_key (config_get_instance (), "LightDM", "start-default-seat"))
1267 config_set_boolean (config_get_instance (), "LightDM", "start-default-seat", TRUE);
1268 if (!config_has_key (config_get_instance (), "LightDM", "minimum-vt"))
1269 config_set_integer (config_get_instance (), "LightDM", "minimum-vt", 7);
1270 if (!config_has_key (config_get_instance (), "LightDM", "guest-account-script"))
1271 config_set_string (config_get_instance (), "LightDM", "guest-account-script", "guest-account");
1272 if (!config_has_key (config_get_instance (), "LightDM", "greeter-user"))
1273 config_set_string (config_get_instance (), "LightDM", "greeter-user", GREETER_USER);
1274 if (!config_has_key (config_get_instance (), "LightDM", "lock-memory"))
1275 config_set_boolean (config_get_instance (), "LightDM", "lock-memory", TRUE);
1276 if (!config_has_key (config_get_instance (), "SeatDefaults", "type"))
1277 config_set_string (config_get_instance (), "SeatDefaults", "type", "xlocal");
1278 if (!config_has_key (config_get_instance (), "SeatDefaults", "pam-service"))
1279 config_set_string (config_get_instance (), "SeatDefaults", "pam-service", "lightdm");
1280 if (!config_has_key (config_get_instance (), "SeatDefaults", "pam-autologin-service"))
1281 config_set_string (config_get_instance (), "SeatDefaults", "pam-autologin-service", "lightdm-autologin");
1282 if (!config_has_key (config_get_instance (), "SeatDefaults", "pam-greeter-service"))
1283 config_set_string (config_get_instance (), "SeatDefaults", "pam-greeter-service", "lightdm-greeter");
1284 if (!config_has_key (config_get_instance (), "SeatDefaults", "xserver-command"))
1285 config_set_string (config_get_instance (), "SeatDefaults", "xserver-command", "X");
1286 if (!config_has_key (config_get_instance (), "SeatDefaults", "xserver-share"))
1287 config_set_boolean (config_get_instance (), "SeatDefaults", "xserver-share", TRUE);
1288 if (!config_has_key (config_get_instance (), "SeatDefaults", "unity-compositor-command"))
1289 config_set_string (config_get_instance (), "SeatDefaults", "unity-compositor-command", "unity-system-compositor");
1290 if (!config_has_key (config_get_instance (), "SeatDefaults", "start-session"))
1291 config_set_boolean (config_get_instance (), "SeatDefaults", "start-session", TRUE);
1292 if (!config_has_key (config_get_instance (), "SeatDefaults", "allow-user-switching"))
1293 config_set_boolean (config_get_instance (), "SeatDefaults", "allow-user-switching", TRUE);
1294 if (!config_has_key (config_get_instance (), "SeatDefaults", "allow-guest"))
1295 config_set_boolean (config_get_instance (), "SeatDefaults", "allow-guest", TRUE);
1296 if (!config_has_key (config_get_instance (), "SeatDefaults", "greeter-allow-guest"))
1297 config_set_boolean (config_get_instance (), "SeatDefaults", "greeter-allow-guest", TRUE);
1298 if (!config_has_key (config_get_instance (), "SeatDefaults", "greeter-show-remote-login"))
1299 config_set_boolean (config_get_instance (), "SeatDefaults", "greeter-show-remote-login", TRUE);
1300 if (!config_has_key (config_get_instance (), "SeatDefaults", "greeter-session"))
1301 config_set_string (config_get_instance (), "SeatDefaults", "greeter-session", GREETER_SESSION);
1302 if (!config_has_key (config_get_instance (), "SeatDefaults", "user-session"))
1303 config_set_string (config_get_instance (), "SeatDefaults", "user-session", USER_SESSION);
1304 if (!config_has_key (config_get_instance (), "SeatDefaults", "session-wrapper"))
1305 config_set_string (config_get_instance (), "SeatDefaults", "session-wrapper", "lightdm-session");
1306 if (!config_has_key (config_get_instance (), "LightDM", "log-directory"))
1307 config_set_string (config_get_instance (), "LightDM", "log-directory", default_log_dir);
1308 g_free (default_log_dir);
1309 if (!config_has_key (config_get_instance (), "LightDM", "run-directory"))
1310 config_set_string (config_get_instance (), "LightDM", "run-directory", default_run_dir);
1311 g_free (default_run_dir);
1312 if (!config_has_key (config_get_instance (), "LightDM", "cache-directory"))
1313 config_set_string (config_get_instance (), "LightDM", "cache-directory", default_cache_dir);
1314 g_free (default_cache_dir);
1315 if (!config_has_key (config_get_instance (), "LightDM", "sessions-directory"))
1316 config_set_string (config_get_instance (), "LightDM", "sessions-directory", SESSIONS_DIR);
1317 if (!config_has_key (config_get_instance (), "LightDM", "remote-sessions-directory"))
1318 config_set_string (config_get_instance (), "LightDM", "remote-sessions-directory", REMOTE_SESSIONS_DIR);
1319 if (!config_has_key (config_get_instance (), "LightDM", "greeters-directory"))
1320 config_set_string (config_get_instance (), "LightDM", "greeters-directory", GREETERS_DIR);
1322 /* Override defaults */
1324 config_set_string (config_get_instance (), "LightDM", "log-directory", log_dir);
1327 config_set_string (config_get_instance (), "LightDM", "run-directory", run_dir);
1330 config_set_string (config_get_instance (), "LightDM", "cache-directory", cache_dir);
1333 /* Create run and cache directories */
1334 dir = config_get_string (config_get_instance (), "LightDM", "log-directory");
1335 if (g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH) < 0)
1336 g_warning ("Failed to make log directory %s: %s", dir, strerror (errno));
1338 dir = config_get_string (config_get_instance (), "LightDM", "run-directory");
1339 if (g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH) < 0)
1340 g_warning ("Failed to make run directory %s: %s", dir, strerror (errno));
1342 dir = config_get_string (config_get_instance (), "LightDM", "cache-directory");
1343 if (g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH) < 0)
1344 g_warning ("Failed to make cache directory %s: %s", dir, strerror (errno));
1349 /* Show queued messages once logging is complete */
1350 for (link = messages; link; link = link->next)
1351 g_debug ("%s", (gchar *)link->data);
1352 g_list_free_full (messages, g_free);
1354 g_debug ("Using D-Bus name %s", LIGHTDM_BUS_NAME);
1355 bus_id = g_bus_own_name (getuid () == 0 ? G_BUS_TYPE_SYSTEM : G_BUS_TYPE_SESSION,
1357 G_BUS_NAME_OWNER_FLAGS_NONE,
1365 g_debug ("Running in user mode");
1366 if (getenv ("DISPLAY"))
1367 g_debug ("Using Xephyr for X servers");
1369 display_manager = display_manager_new ();
1370 g_signal_connect (display_manager, "stopped", G_CALLBACK (display_manager_stopped_cb), NULL);
1371 g_signal_connect (display_manager, "seat-removed", G_CALLBACK (display_manager_seat_removed_cb), NULL);
1373 shared_data_manager_start (shared_data_manager_get_instance ());
1375 /* Connect to logind */
1376 if (login1_service_connect (login1_service_get_instance ()))
1378 /* Load dynamic seats from logind */
1379 g_debug ("Monitoring logind for seats");
1381 if (config_get_boolean (config_get_instance (), "LightDM", "start-default-seat"))
1383 g_signal_connect (login1_service_get_instance (), "seat-added", G_CALLBACK (login1_service_seat_added_cb), NULL);
1384 g_signal_connect (login1_service_get_instance (), "seat-removed", G_CALLBACK (login1_service_seat_removed_cb), NULL);
1386 for (link = login1_service_get_seats (login1_service_get_instance ()); link; link = link->next)
1388 Login1Seat *seat = link->data;
1389 if (!add_login1_seat (seat))
1390 return EXIT_FAILURE;
1396 if (config_get_boolean (config_get_instance (), "LightDM", "start-default-seat"))
1402 g_debug ("Adding default seat");
1404 types = config_get_string_list (config_get_instance (), "SeatDefaults", "type");
1405 for (type = types; type && *type; type++)
1407 seat = seat_new (*type, "seat0");
1414 set_seat_properties (seat, NULL);
1415 seat_set_property (seat, "exit-on-failure", "true");
1416 if (!display_manager_add_seat (display_manager, seat))
1417 return EXIT_FAILURE;
1418 g_object_unref (seat);
1422 g_warning ("Failed to create default seat");
1423 return EXIT_FAILURE;
1428 g_main_loop_run (loop);
1430 /* Clean up shared data manager */
1431 shared_data_manager_cleanup ();
1433 /* Clean up user list */
1434 common_user_list_cleanup ();
1436 /* Clean up display manager */
1437 g_object_unref (display_manager);
1438 display_manager = NULL;
1440 /* Remove D-Bus interface */
1441 g_dbus_connection_unregister_object (bus, reg_id);
1442 g_bus_unown_name (bus_id);
1443 if (seat_bus_entries)
1444 g_hash_table_unref (seat_bus_entries);
1445 if (session_bus_entries)
1446 g_hash_table_unref (session_bus_entries);
1448 g_debug ("Exiting with return value %d", exit_code);