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>
23 #include "configuration.h"
24 #include "display-manager.h"
25 #include "xdmcp-server.h"
26 #include "vnc-server.h"
27 #include "seat-xdmcp-session.h"
28 #include "seat-xvnc.h"
30 #include "pam-session.h"
33 static gchar *config_path = NULL;
34 static GMainLoop *loop = NULL;
35 static GTimer *log_timer;
36 static int log_fd = -1;
37 static gboolean debug = FALSE;
39 static DisplayManager *display_manager = NULL;
40 static XDMCPServer *xdmcp_server = NULL;
41 static VNCServer *vnc_server = NULL;
42 static guint bus_id = 0;
43 static GDBusConnection *bus = NULL;
45 static GDBusNodeInfo *seat_info;
46 static GHashTable *seat_bus_entries = NULL;
47 static guint seat_index = 0;
48 static GDBusNodeInfo *session_info;
49 static GHashTable *session_bus_entries = NULL;
50 static guint session_index = 0;
51 static gint exit_code = EXIT_SUCCESS;
57 gchar *removed_signal;
61 #define LIGHTDM_BUS_NAME "org.freedesktop.DisplayManager"
64 log_cb (const gchar *log_domain, GLogLevelFlags log_level, const gchar *message, gpointer data)
69 switch (log_level & G_LOG_LEVEL_MASK)
71 case G_LOG_LEVEL_ERROR:
74 case G_LOG_LEVEL_CRITICAL:
77 case G_LOG_LEVEL_WARNING:
80 case G_LOG_LEVEL_MESSAGE:
83 case G_LOG_LEVEL_INFO:
86 case G_LOG_LEVEL_DEBUG:
94 text = g_strdup_printf ("[%+.2fs] %s %s\n", g_timer_elapsed (log_timer, NULL), prefix, message);
96 /* Log everything to a file */
100 n_written = write (log_fd, text, strlen (text));
102 ; /* Check result so compiler doesn't warn about it */
105 /* Log to stderr if requested */
107 g_printerr ("%s", text);
109 g_log_default_handler (log_domain, log_level, message, data);
117 gchar *log_dir, *path;
119 log_timer = g_timer_new ();
122 log_dir = config_get_string (config_get_instance (), "LightDM", "log-directory");
123 path = g_build_filename (log_dir, "lightdm.log", NULL);
126 log_fd = open (path, O_WRONLY | O_CREAT | O_TRUNC, 0600);
127 g_log_set_default_handler (log_cb, NULL);
129 g_debug ("Logging to %s", path);
134 signal_cb (Process *process, int signum)
136 g_debug ("Caught %s signal, shutting down", g_strsignal (signum));
137 display_manager_stop (display_manager);
138 // FIXME: Stop XDMCP server
142 exit_cb (gpointer data)
144 /* Clean up display manager */
145 g_object_unref (display_manager);
146 display_manager = NULL;
148 /* Remove D-Bus interface */
149 g_bus_unown_name (bus_id);
150 if (seat_bus_entries)
151 g_hash_table_unref (seat_bus_entries);
152 if (session_bus_entries)
153 g_hash_table_unref (session_bus_entries);
155 g_debug ("Exiting with return value %d", exit_code);
160 display_manager_stopped_cb (DisplayManager *display_manager)
162 g_debug ("Stopping daemon");
163 g_idle_add (exit_cb, NULL);
167 handle_display_manager_get_property (GDBusConnection *connection,
169 const gchar *object_path,
170 const gchar *interface_name,
171 const gchar *property_name,
175 GVariant *result = NULL;
177 if (g_strcmp0 (property_name, "Seats") == 0)
179 GVariantBuilder *builder;
183 builder = g_variant_builder_new (G_VARIANT_TYPE ("ao"));
184 g_hash_table_iter_init (&iter, seat_bus_entries);
185 while (g_hash_table_iter_next (&iter, NULL, &value))
187 BusEntry *entry = value;
188 g_variant_builder_add_value (builder, g_variant_new_object_path (entry->path));
190 result = g_variant_builder_end (builder);
191 g_variant_builder_unref (builder);
193 else if (g_strcmp0 (property_name, "Sessions") == 0)
195 GVariantBuilder *builder;
199 builder = g_variant_builder_new (G_VARIANT_TYPE ("ao"));
200 g_hash_table_iter_init (&iter, session_bus_entries);
201 while (g_hash_table_iter_next (&iter, NULL, &value))
203 BusEntry *entry = value;
204 g_variant_builder_add_value (builder, g_variant_new_object_path (entry->path));
206 result = g_variant_builder_end (builder);
207 g_variant_builder_unref (builder);
214 set_seat_properties (Seat *seat, const gchar *config_section)
219 keys = config_get_keys (config_get_instance (), "SeatDefaults");
220 for (i = 0; keys[i]; i++)
222 gchar *value = config_get_string (config_get_instance (), "SeatDefaults", keys[i]);
223 seat_set_property (seat, keys[i], value);
230 keys = config_get_keys (config_get_instance (), config_section);
231 for (i = 0; keys[i]; i++)
233 gchar *value = config_get_string (config_get_instance (), config_section, keys[i]);
234 seat_set_property (seat, keys[i], value);
242 handle_display_manager_call (GDBusConnection *connection,
244 const gchar *object_path,
245 const gchar *interface_name,
246 const gchar *method_name,
247 GVariant *parameters,
248 GDBusMethodInvocation *invocation,
251 if (g_strcmp0 (method_name, "AddSeat") == 0)
254 GVariantIter *property_iter;
258 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(sa(ss))")))
261 g_variant_get (parameters, "(&sa(ss))", &type, &property_iter);
263 g_debug ("Adding seat of type %s", type);
265 seat = seat_new (type);
268 set_seat_properties (seat, NULL);
269 while (g_variant_iter_loop (property_iter, "(&s&s)", &name, &value))
270 seat_set_property (seat, name, value);
272 g_variant_iter_free (property_iter);
276 // FIXME: Need to make proper error
277 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Unable to create seat of type %s", type);
281 if (display_manager_add_seat (display_manager, seat))
285 entry = g_hash_table_lookup (seat_bus_entries, seat);
286 g_dbus_method_invocation_return_value (invocation, g_variant_new ("(o)", entry->path));
288 else// FIXME: Need to make proper error
289 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to start seat");
290 g_object_unref (seat);
292 else if (g_strcmp0 (method_name, "AddLocalXSeat") == 0)
297 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(i)")))
300 g_variant_get (parameters, "(i)", &display_number);
302 g_debug ("Adding local X seat :%d", display_number);
304 seat = seat_new ("xremote");
307 gchar *display_number_string;
309 set_seat_properties (seat, NULL);
310 display_number_string = g_strdup_printf ("%d", display_number);
311 seat_set_property (seat, "xserver-display-number", display_number_string);
312 g_free (display_number_string);
317 // FIXME: Need to make proper error
318 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Unable to create local X seat");
322 if (display_manager_add_seat (display_manager, seat))
326 entry = g_hash_table_lookup (seat_bus_entries, seat);
327 g_dbus_method_invocation_return_value (invocation, g_variant_new ("(o)", entry->path));
329 else// FIXME: Need to make proper error
330 g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_FAILED, "Failed to start seat");
331 g_object_unref (seat);
336 handle_seat_get_property (GDBusConnection *connection,
338 const gchar *object_path,
339 const gchar *interface_name,
340 const gchar *property_name,
344 Seat *seat = user_data;
345 GVariant *result = NULL;
347 if (g_strcmp0 (property_name, "CanSwitch") == 0)
348 result = g_variant_new_boolean (seat_get_can_switch (seat));
349 if (g_strcmp0 (property_name, "HasGuestAccount") == 0)
350 result = g_variant_new_boolean (seat_get_allow_guest (seat));
351 else if (g_strcmp0 (property_name, "Sessions") == 0)
353 GVariantBuilder *builder;
356 builder = g_variant_builder_new (G_VARIANT_TYPE ("ao"));
357 for (link = seat_get_displays (seat); link; link = link->next)
359 Display *display = link->data;
361 entry = g_hash_table_lookup (session_bus_entries, display_get_session (display));
363 g_variant_builder_add_value (builder, g_variant_new_object_path (entry->path));
365 result = g_variant_builder_end (builder);
366 g_variant_builder_unref (builder);
373 handle_seat_call (GDBusConnection *connection,
375 const gchar *object_path,
376 const gchar *interface_name,
377 const gchar *method_name,
378 GVariant *parameters,
379 GDBusMethodInvocation *invocation,
382 Seat *seat = user_data;
384 if (g_strcmp0 (method_name, "SwitchToGreeter") == 0)
386 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("()")))
389 seat_switch_to_greeter (seat);
390 g_dbus_method_invocation_return_value (invocation, NULL);
392 else if (g_strcmp0 (method_name, "SwitchToUser") == 0)
394 const gchar *username, *session_name;
396 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(ss)")))
399 g_variant_get (parameters, "(&s&s)", &username, &session_name);
400 if (strcmp (session_name, "") == 0)
403 seat_switch_to_user (seat, username, session_name);
404 g_dbus_method_invocation_return_value (invocation, NULL);
406 else if (g_strcmp0 (method_name, "SwitchToGuest") == 0)
408 const gchar *session_name;
410 if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(s)")))
413 g_variant_get (parameters, "(&s)", &session_name);
414 if (strcmp (session_name, "") == 0)
417 seat_switch_to_guest (seat, session_name);
418 g_dbus_method_invocation_return_value (invocation, NULL);
423 handle_session_get_property (GDBusConnection *connection,
425 const gchar *object_path,
426 const gchar *interface_name,
427 const gchar *property_name,
431 Session *session = user_data;
434 entry = g_hash_table_lookup (session_bus_entries, session);
435 if (g_strcmp0 (property_name, "Seat") == 0)
436 return g_variant_new_object_path (entry ? entry->parent_path : "");
437 else if (g_strcmp0 (property_name, "UserName") == 0)
438 return g_variant_new_string (user_get_name (session_get_user (session)));
444 handle_session_call (GDBusConnection *connection,
446 const gchar *object_path,
447 const gchar *interface_name,
448 const gchar *method_name,
449 GVariant *parameters,
450 GDBusMethodInvocation *invocation,
456 bus_entry_new (const gchar *path, const gchar *parent_path, const gchar *removed_signal)
460 entry = g_malloc0 (sizeof (BusEntry));
461 entry->path = g_strdup (path);
462 entry->parent_path = g_strdup (parent_path);
463 entry->removed_signal = g_strdup (removed_signal);
469 bus_entry_free (gpointer data)
471 BusEntry *entry = data;
473 g_dbus_connection_unregister_object (bus, entry->bus_id);
475 g_dbus_connection_emit_signal (bus,
477 "/org/freedesktop/DisplayManager",
478 "org.freedesktop.DisplayManager",
479 entry->removed_signal,
480 g_variant_new ("(o)", entry->path),
483 g_free (entry->path);
484 g_free (entry->parent_path);
485 g_free (entry->removed_signal);
490 start_session_cb (Display *display, Seat *seat)
493 BusEntry *seat_entry;
496 session = display_get_session (display);
498 seat_entry = g_hash_table_lookup (seat_bus_entries, seat);
499 session_set_env (session, "XDG_SEAT_PATH", seat_entry->path);
501 path = g_strdup_printf ("/org/freedesktop/DisplayManager/Session%d", session_index);
503 session_set_env (session, "XDG_SESSION_PATH", path);
510 session_stopped_cb (Session *session, Seat *seat)
512 g_signal_handlers_disconnect_matched (session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
513 g_hash_table_remove (session_bus_entries, session);
517 session_started_cb (Display *display, Seat *seat)
519 static const GDBusInterfaceVTable session_vtable =
522 handle_session_get_property
525 BusEntry *seat_entry, *entry;
527 session = display_get_session (display);
529 g_signal_connect (session, "stopped", G_CALLBACK (session_stopped_cb), seat);
531 seat_entry = g_hash_table_lookup (seat_bus_entries, seat);
532 entry = bus_entry_new (session_get_env (session, "XDG_SESSION_PATH"), seat_entry ? seat_entry->path : NULL, "SessionRemoved");
533 g_hash_table_insert (session_bus_entries, g_object_ref (session), entry);
535 g_debug ("Registering session with bus path %s", entry->path);
537 entry->bus_id = g_dbus_connection_register_object (bus,
539 session_info->interfaces[0],
541 g_object_ref (session), g_object_unref,
543 g_dbus_connection_emit_signal (bus,
545 "/org/freedesktop/DisplayManager",
546 "org.freedesktop.DisplayManager",
548 g_variant_new ("(o)", entry->path),
555 display_added_cb (Seat *seat, Display *display)
557 g_signal_connect (display, "start-session", G_CALLBACK (start_session_cb), seat);
558 g_signal_connect_after (display, "start-session", G_CALLBACK (session_started_cb), seat);
562 seat_added_cb (DisplayManager *display_manager, Seat *seat)
564 static const GDBusInterfaceVTable seat_vtable =
567 handle_seat_get_property
573 g_signal_connect (seat, "display-added", G_CALLBACK (display_added_cb), NULL);
574 for (link = seat_get_displays (seat); link; link = link->next)
575 display_added_cb (seat, (Display *) link->data);
577 path = g_strdup_printf ("/org/freedesktop/DisplayManager/Seat%d", seat_index);
580 entry = bus_entry_new (path, NULL, "SeatRemoved");
582 g_hash_table_insert (seat_bus_entries, g_object_ref (seat), entry);
584 g_debug ("Registering seat with bus path %s", entry->path);
586 entry->bus_id = g_dbus_connection_register_object (bus,
588 seat_info->interfaces[0],
590 g_object_ref (seat), g_object_unref,
592 g_dbus_connection_emit_signal (bus,
594 "/org/freedesktop/DisplayManager",
595 "org.freedesktop.DisplayManager",
597 g_variant_new ("(o)", entry->path),
602 seat_removed_cb (DisplayManager *display_manager, Seat *seat)
604 gboolean exit_on_failure;
606 exit_on_failure = seat_get_boolean_property (seat, "exit-on-failure");
607 g_hash_table_remove (seat_bus_entries, seat);
611 g_debug ("Required seat has stopped");
612 exit_code = EXIT_FAILURE;
613 display_manager_stop (display_manager);
618 bus_acquired_cb (GDBusConnection *connection,
622 const gchar *display_manager_interface =
624 " <interface name='org.freedesktop.DisplayManager'>"
625 " <property name='Seats' type='ao' access='read'/>"
626 " <property name='Sessions' type='ao' access='read'/>"
627 " <method name='AddSeat'>"
628 " <arg name='type' direction='in' type='s'/>"
629 " <arg name='properties' direction='in' type='a(ss)'/>"
630 " <arg name='seat' direction='out' type='o'/>"
632 " <method name='AddLocalXSeat'>"
633 " <arg name='display-number' direction='in' type='i'/>"
634 " <arg name='seat' direction='out' type='o'/>"
636 " <signal name='SeatAdded'>"
637 " <arg name='seat' type='o'/>"
639 " <signal name='SeatRemoved'>"
640 " <arg name='seat' type='o'/>"
642 " <signal name='SessionAdded'>"
643 " <arg name='session' type='o'/>"
645 " <signal name='SessionRemoved'>"
646 " <arg name='session' type='o'/>"
650 static const GDBusInterfaceVTable display_manager_vtable =
652 handle_display_manager_call,
653 handle_display_manager_get_property
655 const gchar *seat_interface =
657 " <interface name='org.freedesktop.DisplayManager.Seat'>"
658 " <property name='CanSwitch' type='b' access='read'/>"
659 " <property name='HasGuestAccount' type='b' access='read'/>"
660 " <property name='Sessions' type='ao' access='read'/>"
661 " <method name='SwitchToGreeter'/>"
662 " <method name='SwitchToUser'>"
663 " <arg name='username' direction='in' type='s'/>"
664 " <arg name='session-name' direction='in' type='s'/>"
666 " <method name='SwitchToGuest'>"
667 " <arg name='session-name' direction='in' type='s'/>"
671 const gchar *session_interface =
673 " <interface name='org.freedesktop.DisplayManager.Session'>"
674 " <property name='Seat' type='o' access='read'/>"
675 " <property name='UserName' type='s' access='read'/>"
678 GDBusNodeInfo *display_manager_info;
681 g_debug ("Acquired bus name %s", name);
685 display_manager_info = g_dbus_node_info_new_for_xml (display_manager_interface, NULL);
686 g_assert (display_manager_info != NULL);
687 seat_info = g_dbus_node_info_new_for_xml (seat_interface, NULL);
688 g_assert (seat_info != NULL);
689 session_info = g_dbus_node_info_new_for_xml (session_interface, NULL);
690 g_assert (session_info != NULL);
692 bus_id = g_dbus_connection_register_object (connection,
693 "/org/freedesktop/DisplayManager",
694 display_manager_info->interfaces[0],
695 &display_manager_vtable,
698 g_dbus_node_info_unref (display_manager_info);
700 seat_bus_entries = g_hash_table_new_full (g_direct_hash, g_direct_equal, g_object_unref, bus_entry_free);
701 session_bus_entries = g_hash_table_new_full (g_direct_hash, g_direct_equal, g_object_unref, bus_entry_free);
703 g_signal_connect (display_manager, "seat-added", G_CALLBACK (seat_added_cb), NULL);
704 g_signal_connect (display_manager, "seat-removed", G_CALLBACK (seat_removed_cb), NULL);
705 for (link = display_manager_get_seats (display_manager); link; link = link->next)
706 seat_added_cb (display_manager, (Seat *) link->data);
710 name_lost_cb (GDBusConnection *connection,
715 g_printerr ("Failed to use bus name " LIGHTDM_BUS_NAME ", do you have appropriate permissions?\n");
717 g_printerr ("Failed to get D-Bus connection\n");
723 path_make_absolute (gchar *path)
725 gchar *cwd, *abs_path;
730 if (g_path_is_absolute (path))
733 cwd = g_get_current_dir ();
734 abs_path = g_build_filename (cwd, path, NULL);
741 xdmcp_session_cb (XDMCPServer *server, XDMCPSession *session)
743 SeatXDMCPSession *seat;
746 seat = seat_xdmcp_session_new (session);
747 set_seat_properties (SEAT (seat), NULL);
748 result = display_manager_add_seat (display_manager, SEAT (seat));
749 g_object_unref (seat);
755 vnc_connection_cb (VNCServer *server, GSocket *connection)
759 seat = seat_xvnc_new (connection);
760 set_seat_properties (SEAT (seat), NULL);
761 display_manager_add_seat (display_manager, SEAT (seat));
762 g_object_unref (seat);
766 main (int argc, char **argv)
769 GOptionContext *option_context;
771 gchar **groups, **i, *dir;
773 gboolean explicit_config = FALSE;
774 gboolean test_mode = FALSE;
775 gchar *pid_path = "/var/run/lightdm.pid";
776 gchar *xsessions_dir = NULL;
777 gchar *xgreeters_dir = NULL;
779 gchar *log_dir = NULL;
780 gchar *run_dir = NULL;
781 gchar *cache_dir = NULL;
782 gchar *default_log_dir = g_strdup (LOG_DIR);
783 gchar *default_run_dir = g_strdup (RUN_DIR);
784 gchar *default_cache_dir = g_strdup (CACHE_DIR);
785 gboolean show_version = FALSE;
786 GOptionEntry options[] =
788 { "config", 'c', 0, G_OPTION_ARG_STRING, &config_path,
789 /* Help string for command line --config flag */
790 N_("Use configuration file"), "FILE" },
791 { "debug", 'd', 0, G_OPTION_ARG_NONE, &debug,
792 /* Help string for command line --debug flag */
793 N_("Print debugging messages"), NULL },
794 { "test-mode", 0, 0, G_OPTION_ARG_NONE, &test_mode,
795 /* Help string for command line --test-mode flag */
796 N_("Run as unprivileged user, skipping things that require root access"), NULL },
797 { "pid-file", 0, 0, G_OPTION_ARG_STRING, &pid_path,
798 /* Help string for command line --pid-file flag */
799 N_("File to write PID into"), "FILE" },
800 { "xsessions-dir", 0, 0, G_OPTION_ARG_STRING, &xsessions_dir,
801 /* Help string for command line --xsessions-dir flag */
802 N_("Directory to load X sessions from"), "DIRECTORY" },
803 { "xgreeters-dir", 0, 0, G_OPTION_ARG_STRING, &xgreeters_dir,
804 /* Help string for command line --xgreeters-dir flag */
805 N_("Directory to load X greeters from"), "DIRECTORY" },
806 { "log-dir", 0, 0, G_OPTION_ARG_STRING, &log_dir,
807 /* Help string for command line --log-dir flag */
808 N_("Directory to write logs to"), "DIRECTORY" },
809 { "run-dir", 0, 0, G_OPTION_ARG_STRING, &run_dir,
810 /* Help string for command line --run-dir flag */
811 N_("Directory to store running state"), "DIRECTORY" },
812 { "cache-dir", 0, 0, G_OPTION_ARG_STRING, &cache_dir,
813 /* Help string for command line --cache-dir flag */
814 N_("Directory to cache information"), "DIRECTORY" },
815 { "version", 'v', 0, G_OPTION_ARG_NONE, &show_version,
816 /* Help string for command line --version flag */
817 N_("Show release version"), NULL },
820 GError *error = NULL;
823 loop = g_main_loop_new (NULL, FALSE);
825 g_signal_connect (process_get_current (), "got-signal", G_CALLBACK (signal_cb), NULL);
827 option_context = g_option_context_new (/* Arguments and description for --help test */
828 _("- Display Manager"));
829 g_option_context_add_main_entries (option_context, options, GETTEXT_PACKAGE);
830 result = g_option_context_parse (option_context, &argc, &argv, &error);
832 g_printerr ("%s\n", error->message);
833 g_clear_error (&error);
834 g_option_context_free (option_context);
837 g_printerr (/* Text printed out when an unknown command-line argument provided */
838 _("Run '%s --help' to see a full list of available command line options."), argv[0]);
845 /* NOTE: Is not translated so can be easily parsed */
846 g_printerr ("lightdm %s\n", VERSION);
852 config_dir = g_path_get_basename (config_path);
853 config_dir = path_make_absolute (config_dir);
854 explicit_config = TRUE;
858 config_dir = g_strdup (CONFIG_DIR);
859 config_path = g_build_filename (config_dir, "lightdm.conf", NULL);
861 config_set_string (config_get_instance (), "LightDM", "config-directory", config_dir);
864 if (!test_mode && getuid () != 0)
866 g_printerr ("Only root can run Light Display Manager. To run as a regular user for testing run with the --test-mode flag.\n");
870 /* If running inside an X server use Xephyr for display */
871 if (getenv ("DISPLAY") && getuid () != 0)
875 xserver_path = g_find_program_in_path ("Xephyr");
878 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");
881 g_free (xserver_path);
884 /* Make sure the system binary directory (where the greeters are installed) is in the path */
887 const gchar *path = g_getenv ("PATH");
891 new_path = g_strdup_printf ("%s:%s", path, SBIN_DIR);
893 new_path = g_strdup (SBIN_DIR);
894 g_setenv ("PATH", new_path, TRUE);
899 pid_file = fopen (pid_path, "w");
902 fprintf (pid_file, "%d\n", getpid ());
906 /* Always use absolute directories as child processes may run from different locations */
907 xsessions_dir = path_make_absolute (xsessions_dir);
908 xgreeters_dir = path_make_absolute (xgreeters_dir);
910 /* If not running as root write output to directories we control */
913 g_free (default_log_dir);
914 default_log_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "log", NULL);
915 g_free (default_run_dir);
916 default_run_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "run", NULL);
917 g_free (default_cache_dir);
918 default_cache_dir = g_build_filename (g_get_user_cache_dir (), "lightdm", "cache", NULL);
921 /* Load config file */
922 if (!config_load_from_file (config_get_instance (), config_path, &error))
926 is_empty = error && g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_NOENT);
928 if (explicit_config || !is_empty)
931 g_printerr ("Failed to load configuration from %s: %s\n", config_path, error->message);
935 g_clear_error (&error);
937 /* Set default values */
938 if (!config_has_key (config_get_instance (), "LightDM", "start-default-seat"))
939 config_set_boolean (config_get_instance (), "LightDM", "start-default-seat", TRUE);
940 if (!config_has_key (config_get_instance (), "LightDM", "minimum-vt"))
941 config_set_integer (config_get_instance (), "LightDM", "minimum-vt", 7);
942 if (!config_has_key (config_get_instance (), "LightDM", "guest-account-script"))
943 config_set_string (config_get_instance (), "LightDM", "guest-account-script", "guest-account");
944 if (!config_has_key (config_get_instance (), "LightDM", "greeter-user"))
945 config_set_string (config_get_instance (), "LightDM", "greeter-user", GREETER_USER);
946 if (!config_has_key (config_get_instance (), "SeatDefaults", "type"))
947 config_set_string (config_get_instance (), "SeatDefaults", "type", "xlocal");
948 if (!config_has_key (config_get_instance (), "SeatDefaults", "xserver-command"))
949 config_set_string (config_get_instance (), "SeatDefaults", "xserver-command", "X");
950 if (!config_has_key (config_get_instance (), "SeatDefaults", "start-session"))
951 config_set_boolean (config_get_instance (), "SeatDefaults", "start-session", TRUE);
952 if (!config_has_key (config_get_instance (), "SeatDefaults", "allow-guest"))
953 config_set_boolean (config_get_instance (), "SeatDefaults", "allow-guest", TRUE);
954 if (!config_has_key (config_get_instance (), "SeatDefaults", "greeter-session"))
955 config_set_string (config_get_instance (), "SeatDefaults", "greeter-session", GREETER_SESSION);
956 if (!config_has_key (config_get_instance (), "SeatDefaults", "user-session"))
957 config_set_string (config_get_instance (), "SeatDefaults", "user-session", USER_SESSION);
958 if (!config_has_key (config_get_instance (), "SeatDefaults", "session-wrapper"))
959 config_set_string (config_get_instance (), "SeatDefaults", "session-wrapper", "lightdm-session");
960 if (!config_has_key (config_get_instance (), "LightDM", "log-directory"))
961 config_set_string (config_get_instance (), "LightDM", "log-directory", default_log_dir);
962 g_free (default_log_dir);
963 if (!config_has_key (config_get_instance (), "LightDM", "run-directory"))
964 config_set_string (config_get_instance (), "LightDM", "run-directory", default_run_dir);
965 g_free (default_run_dir);
966 if (!config_has_key (config_get_instance (), "LightDM", "cache-directory"))
967 config_set_string (config_get_instance (), "LightDM", "cache-directory", default_cache_dir);
968 g_free (default_cache_dir);
969 if (!config_has_key (config_get_instance (), "LightDM", "xsessions-directory"))
970 config_set_string (config_get_instance (), "LightDM", "xsessions-directory", XSESSIONS_DIR);
971 if (!config_has_key (config_get_instance (), "LightDM", "xgreeters-directory"))
972 config_set_string (config_get_instance (), "LightDM", "xgreeters-directory", XGREETERS_DIR);
974 /* Override defaults */
976 config_set_string (config_get_instance (), "LightDM", "log-directory", log_dir);
979 config_set_string (config_get_instance (), "LightDM", "run-directory", run_dir);
982 config_set_string (config_get_instance (), "LightDM", "cache-directory", cache_dir);
985 config_set_string (config_get_instance (), "LightDM", "xsessions-directory", xsessions_dir);
986 g_free (xsessions_dir);
988 config_set_string (config_get_instance (), "LightDM", "xgreeters-directory", xgreeters_dir);
989 g_free (xgreeters_dir);
991 /* Create run and cache directories */
992 dir = config_get_string (config_get_instance (), "LightDM", "log-directory");
993 g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH);
995 dir = config_get_string (config_get_instance (), "LightDM", "run-directory");
996 g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH);
998 dir = config_get_string (config_get_instance (), "LightDM", "cache-directory");
999 g_mkdir_with_parents (dir, S_IRWXU | S_IXGRP | S_IXOTH);
1004 g_debug ("Starting Light Display Manager %s, UID=%i PID=%i", VERSION, getuid (), getpid ());
1006 g_debug ("Loaded configuration from %s", config_path);
1007 g_free (config_path);
1009 g_debug ("Using D-Bus name %s", LIGHTDM_BUS_NAME);
1010 bus_id = g_bus_own_name (getuid () == 0 ? G_BUS_TYPE_SYSTEM : G_BUS_TYPE_SESSION,
1012 G_BUS_NAME_OWNER_FLAGS_NONE,
1020 g_debug ("Running in user mode");
1021 if (getenv ("DISPLAY"))
1022 g_debug ("Using Xephyr for X servers");
1024 display_manager = display_manager_new ();
1025 g_signal_connect (display_manager, "stopped", G_CALLBACK (display_manager_stopped_cb), NULL);
1027 /* Load the static display entries */
1028 groups = config_get_groups (config_get_instance ());
1029 for (i = groups; *i; i++)
1031 gchar *config_section = *i;
1035 if (!g_str_has_prefix (config_section, "Seat:"))
1038 g_debug ("Loading seat %s", config_section);
1039 type = config_get_string (config_get_instance (), config_section, "type");
1041 type = config_get_string (config_get_instance (), "SeatDefaults", "type");
1042 seat = seat_new (type);
1046 set_seat_properties (seat, config_section);
1047 display_manager_add_seat (display_manager, seat);
1048 g_object_unref (seat);
1052 g_warning ("Failed to create seat %s", config_section);
1054 g_strfreev (groups);
1056 /* If no seats start a default one */
1057 if (n_seats == 0 && config_get_boolean (config_get_instance (), "LightDM", "start-default-seat"))
1062 g_debug ("Adding default seat");
1064 type = config_get_string (config_get_instance (), "SeatDefaults", "type");
1065 seat = seat_new (type);
1069 set_seat_properties (seat, NULL);
1070 seat_set_property (seat, "exit-on-failure", "true");
1071 display_manager_add_seat (display_manager, seat);
1072 g_object_unref (seat);
1075 g_warning ("Failed to create default seat");
1078 display_manager_start (display_manager);
1080 /* Start the XDMCP server */
1081 if (config_get_boolean (config_get_instance (), "XDMCPServer", "enabled"))
1083 gchar *key_name, *key = NULL;
1085 xdmcp_server = xdmcp_server_new ();
1086 if (config_has_key (config_get_instance (), "XDMCPServer", "port"))
1089 port = config_get_integer (config_get_instance (), "XDMCPServer", "port");
1091 xdmcp_server_set_port (xdmcp_server, port);
1093 g_signal_connect (xdmcp_server, "new-session", G_CALLBACK (xdmcp_session_cb), NULL);
1095 key_name = config_get_string (config_get_instance (), "XDMCPServer", "key");
1101 GError *error = NULL;
1103 dir = config_get_string (config_get_instance (), "LightDM", "config-directory");
1104 path = g_build_filename (dir, "keys.conf", NULL);
1107 keys = g_key_file_new ();
1108 result = g_key_file_load_from_file (keys, path, G_KEY_FILE_NONE, &error);
1110 g_debug ("Error getting key %s", error->message);
1111 g_clear_error (&error);
1115 if (g_key_file_has_key (keys, "keyring", key_name, NULL))
1116 key = g_key_file_get_string (keys, "keyring", key_name, NULL);
1118 g_debug ("Key %s not defined", key_name);
1121 g_key_file_free (keys);
1124 xdmcp_server_set_key (xdmcp_server, key);
1128 g_debug ("Starting XDMCP server on UDP/IP port %d", xdmcp_server_get_port (xdmcp_server));
1129 xdmcp_server_start (xdmcp_server);
1132 /* Start the VNC server */
1133 if (config_get_boolean (config_get_instance (), "VNCServer", "enabled"))
1137 path = g_find_program_in_path ("Xvnc");
1140 vnc_server = vnc_server_new ();
1141 if (config_has_key (config_get_instance (), "VNCServer", "port"))
1144 port = config_get_integer (config_get_instance (), "VNCServer", "port");
1146 vnc_server_set_port (vnc_server, port);
1148 g_signal_connect (vnc_server, "new-connection", G_CALLBACK (vnc_connection_cb), NULL);
1150 g_debug ("Starting VNC server on TCP/IP port %d", vnc_server_get_port (vnc_server));
1151 vnc_server_start (vnc_server);
1156 g_warning ("Can't start VNC server, Xvn is not in the path");
1159 g_main_loop_run (loop);
1161 return EXIT_SUCCESS;