/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 2; tab-width: 2 -*- */ /* * Copyright 2009 Canonical Ltd. * * Authors: * Cody Russell * * This program is free software: you can redistribute it and/or modify it * under the terms of the GNU General Public License version 3, as published * by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranties of * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR * PURPOSE. See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program. If not, see . */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include "dbus-shared-names.h" #include "display-manager-client.h" #include "users-service-dbus.h" #include "accounts-service-client.h" #include "consolekit-manager-client.h" #include "consolekit-session-client.h" #include "consolekit-seat-client.h" #define CK_ADDR "org.freedesktop.ConsoleKit" #define CK_SESSION_IFACE "org.freedesktop.ConsoleKit.Session" static void users_service_dbus_class_init (UsersServiceDbusClass *klass); static void users_service_dbus_init (UsersServiceDbus *self); static void users_service_dbus_dispose (GObject *object); static void users_service_dbus_finalize (GObject *object); static void create_display_manager_proxy (UsersServiceDbus *self); static void create_accounts_service_proxy (UsersServiceDbus *self); static void create_seat_proxy (UsersServiceDbus *self); static void create_ck_proxy (UsersServiceDbus *self); static void create_cksession_proxy (UsersServiceDbus *self); static gchar *get_seat (UsersServiceDbus *service); static void user_added (DBusGProxy *proxy, const gchar *user_id, gpointer user_data); static void user_deleted (DBusGProxy *proxy, const gchar *user_id, gpointer user_data); static void user_changed (DBusGProxy *proxy, gpointer user_data); static void seat_proxy_session_added (DBusGProxy *seat_proxy, const gchar *session_id, UsersServiceDbus *service); static void seat_proxy_session_removed (DBusGProxy *seat_proxy, const gchar *session_id, UsersServiceDbus *service); static void sync_users (UsersServiceDbus *self); static gboolean do_add_session (UsersServiceDbus *service, UserData *user, const gchar *ssid); static gchar * get_seat_internal (DBusGProxy *proxy); /* Private */ typedef struct _UsersServiceDbusPrivate UsersServiceDbusPrivate; struct _UsersServiceDbusPrivate { GHashTable *users; gint count; gchar *seat; gchar *ssid; DBusGConnection *system_bus; DBusGProxy *accounts_service_proxy; DBusGProxy *display_manager_proxy; DBusGProxy *display_manager_props_proxy; DBusGProxy *ck_proxy; DBusGProxy *seat_proxy; DBusGProxy *session_proxy; GHashTable *exclusions; GHashTable *sessions; DbusmenuMenuitem * guest_item; gchar * guest_session_id; gboolean guest_session_enabled; }; #define USERS_SERVICE_DBUS_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), USERS_SERVICE_DBUS_TYPE, UsersServiceDbusPrivate)) /* Signals */ enum { USER_ADDED, USER_DELETED, LAST_SIGNAL }; static guint signals[LAST_SIGNAL] = { 0 }; /* GObject Boilerplate */ G_DEFINE_TYPE (UsersServiceDbus, users_service_dbus, G_TYPE_OBJECT); static void users_service_dbus_class_init (UsersServiceDbusClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); g_type_class_add_private (object_class, sizeof (UsersServiceDbusPrivate)); object_class->dispose = users_service_dbus_dispose; object_class->finalize = users_service_dbus_finalize; signals[USER_ADDED] = g_signal_new ("user-added", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (UsersServiceDbusClass, user_added), NULL, NULL, g_cclosure_marshal_VOID__STRING, G_TYPE_NONE, 1, G_TYPE_STRING); signals[USER_DELETED] = g_signal_new ("user-deleted", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (UsersServiceDbusClass, user_deleted), NULL, NULL, g_cclosure_marshal_VOID__STRING, G_TYPE_NONE, 1, G_TYPE_STRING); } static void users_service_dbus_init (UsersServiceDbus *self) { GError *error = NULL; UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); priv->users = NULL; priv->count = 0; priv->guest_item = NULL; priv->guest_session_id = NULL; priv->guest_session_enabled = FALSE; /* Get the system bus */ priv->system_bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error); if (error != NULL) { g_error ("Unable to get system bus"); g_error_free(error); return; } priv->sessions = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free); priv->users = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL); create_ck_proxy (self); create_seat_proxy (self); create_display_manager_proxy (self); create_accounts_service_proxy (self); } static void users_service_dbus_dispose (GObject *object) { G_OBJECT_CLASS (users_service_dbus_parent_class)->dispose (object); } static void users_service_dbus_finalize (GObject *object) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (object); if (priv->guest_session_id != NULL) { g_free(priv->guest_session_id); priv->guest_session_id = NULL; } G_OBJECT_CLASS (users_service_dbus_parent_class)->finalize (object); } static void create_display_manager_proxy (UsersServiceDbus *self) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); GError *error = NULL; const gchar *seat = NULL; seat = g_getenv ("XDG_SEAT_PATH"); g_debug ("CREATING DM PROXIES WITH %s", seat); priv->display_manager_proxy = dbus_g_proxy_new_for_name (priv->system_bus, "org.freedesktop.DisplayManager", seat, "org.freedesktop.DisplayManager.Seat"); priv->display_manager_props_proxy = dbus_g_proxy_new_for_name (priv->system_bus, "org.freedesktop.DisplayManager", seat, "org.freedesktop.DBus.Properties"); if (!priv->display_manager_proxy) { g_warning ("Failed to get DisplayManager seat proxy."); return; } if (!priv->display_manager_props_proxy) { g_warning ("Failed to get DisplayManager Properties seat proxy."); return; } GValue has_guest_session = {0}; g_value_init (&has_guest_session, G_TYPE_BOOLEAN); if (!dbus_g_proxy_call (priv->display_manager_props_proxy, "Get", &error, G_TYPE_STRING, "org.freedesktop.DisplayManager.Seat", G_TYPE_STRING, "HasGuestAccount", G_TYPE_INVALID, G_TYPE_VALUE, &has_guest_session, G_TYPE_INVALID)) { g_warning ("Failed to get the HasGuestSession property from the DisplayManager Properties seat proxy. error: %s", error->message); g_error_free (error); return; } g_debug ("Does seat have a guest account = %i", g_value_get_boolean (&has_guest_session)); priv->guest_session_enabled = g_value_get_boolean (&has_guest_session); } static void create_accounts_service_proxy (UsersServiceDbus *self) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); GPtrArray *users = g_ptr_array_new (); GError *error = NULL; priv->accounts_service_proxy = dbus_g_proxy_new_for_name (priv->system_bus, "org.freedesktop.Accounts", "/org/freedesktop/Accounts", "org.freedesktop.Accounts"); dbus_g_proxy_add_signal (priv->accounts_service_proxy, "UserAdded", DBUS_TYPE_G_OBJECT_PATH, G_TYPE_INVALID); dbus_g_proxy_add_signal (priv->accounts_service_proxy, "UserChanged", DBUS_TYPE_G_OBJECT_PATH, G_TYPE_INVALID); dbus_g_proxy_add_signal (priv->accounts_service_proxy, "UserDeleted", DBUS_TYPE_G_OBJECT_PATH, G_TYPE_INVALID); dbus_g_proxy_connect_signal (priv->accounts_service_proxy, "UserAdded", G_CALLBACK (user_added), self, NULL); dbus_g_proxy_connect_signal (priv->accounts_service_proxy, "UserDeleted", G_CALLBACK (user_deleted), self, NULL); if (!org_freedesktop_Accounts_list_cached_users (priv->accounts_service_proxy, &users, &error)) { g_warning ("failed to retrieve user count: %s", error->message); g_error_free (error); return; } priv->count = users->len; g_ptr_array_free (users, TRUE); sync_users (self); } static void create_ck_proxy (UsersServiceDbus *self) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); priv->ck_proxy = dbus_g_proxy_new_for_name (priv->system_bus, "org.freedesktop.ConsoleKit", "/org/freedesktop/ConsoleKit/Manager", "org.freedesktop.ConsoleKit.Manager"); if (!priv->ck_proxy) { g_warning ("Failed to get ConsoleKit proxy."); return; } } /* Get the initial sessions when starting up */ static void get_cksessions_cb (DBusGProxy *proxy, GPtrArray * sessions, GError * error, gpointer userdata) { if (error != NULL) { g_warning("Unable to get initial sessions: %s", error->message); return; } /* If there's no error we should at least get an array of zero entries */ g_return_if_fail(sessions != NULL); g_debug("Got %d initial sessions", sessions->len); int i; for (i = 0; i < sessions->len; i++) { seat_proxy_session_added(proxy, g_ptr_array_index(sessions, i), USERS_SERVICE_DBUS(userdata)); } return; } static void create_seat_proxy (UsersServiceDbus *self) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); GError *error = NULL; priv->seat = get_seat (self); if (priv->seat == NULL) { return; } priv->seat_proxy = dbus_g_proxy_new_for_name_owner (priv->system_bus, "org.freedesktop.ConsoleKit", priv->seat, "org.freedesktop.ConsoleKit.Seat", &error); if (!priv->seat_proxy) { if (error != NULL) { g_warning ("Failed to connect to the ConsoleKit seat: %s", error->message); g_error_free (error); } return; } dbus_g_proxy_add_signal (priv->seat_proxy, "SessionAdded", DBUS_TYPE_G_OBJECT_PATH, G_TYPE_INVALID); dbus_g_proxy_add_signal (priv->seat_proxy, "SessionRemoved", DBUS_TYPE_G_OBJECT_PATH, G_TYPE_INVALID); dbus_g_proxy_connect_signal (priv->seat_proxy, "SessionAdded", G_CALLBACK (seat_proxy_session_added), self, NULL); dbus_g_proxy_connect_signal (priv->seat_proxy, "SessionRemoved", G_CALLBACK (seat_proxy_session_removed), self, NULL); org_freedesktop_ConsoleKit_Seat_get_sessions_async (priv->seat_proxy, get_cksessions_cb, self); return; } static void create_cksession_proxy (UsersServiceDbus *service) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); priv->session_proxy = dbus_g_proxy_new_for_name (priv->system_bus, CK_ADDR, priv->ssid, CK_SESSION_IFACE); if (!priv->session_proxy) { g_warning ("Failed to get ConsoleKit session proxy"); return; } } static gchar * get_seat (UsersServiceDbus *service) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); GError *error = NULL; gchar *ssid = NULL; gchar *seat; if (!dbus_g_proxy_call (priv->ck_proxy, "GetCurrentSession", &error, G_TYPE_INVALID, DBUS_TYPE_G_OBJECT_PATH, &ssid, G_TYPE_INVALID)) { if (error) { g_debug ("Failed to call GetCurrentSession: %s", error->message); g_error_free (error); } if (ssid) g_free (ssid); return NULL; } priv->ssid = ssid; create_cksession_proxy (service); seat = get_seat_internal (priv->session_proxy); return seat; } static gchar * get_seat_internal (DBusGProxy *proxy) { GError *error = NULL; gchar *seat = NULL; if (!org_freedesktop_ConsoleKit_Session_get_seat_id (proxy, &seat, &error)) { if (error) { g_debug ("Failed to call GetSeatId: %s", error->message); return NULL; } } return seat; } static gboolean get_unix_user (UsersServiceDbus *service, const gchar *session_id, uid_t *uidp) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); GError *error = NULL; guint uid; DBusGProxy *session_proxy; g_debug("Building session proxy for: %s", session_id); session_proxy = dbus_g_proxy_new_for_name_owner(priv->system_bus, CK_ADDR, session_id, CK_SESSION_IFACE, &error); if (error != NULL) { g_warning("Unable to get CK Session proxy: %s", error->message); g_error_free(error); return FALSE; } if (!org_freedesktop_ConsoleKit_Session_get_unix_user(session_proxy, &uid, &error)) { if (error) { g_warning ("Failed to call GetUnixUser: %s", error->message); g_error_free (error); } g_object_unref(session_proxy); return FALSE; } if (uidp != NULL) { *uidp = (uid_t)uid; } g_object_unref(session_proxy); return TRUE; } static gboolean do_add_session (UsersServiceDbus *service, UserData *user, const gchar *ssid) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); GError *error = NULL; gchar *seat = NULL; gchar *xdisplay = NULL; DBusGProxy * session_proxy; GList *l; session_proxy = dbus_g_proxy_new_for_name_owner(priv->system_bus, CK_ADDR, ssid, CK_SESSION_IFACE, &error); if (error != NULL) { g_warning("Unable to get CK Session proxy: %s", error->message); g_error_free(error); return FALSE; } seat = get_seat_internal (session_proxy); if (!seat || !priv->seat || strcmp (seat, priv->seat) != 0) { g_object_unref(session_proxy); return FALSE; } if (!org_freedesktop_ConsoleKit_Session_get_x11_display (session_proxy, &xdisplay, &error)) { if (error) { g_debug ("Failed to call GetX11Display: %s", error->message); g_error_free (error); } g_object_unref(session_proxy); return FALSE; } g_object_unref(session_proxy); if (!xdisplay || xdisplay[0] == '\0') return FALSE; g_hash_table_insert (priv->sessions, g_strdup (ssid), g_strdup (user->user_name)); l = g_list_find_custom (user->sessions, ssid, (GCompareFunc)g_strcmp0); if (l == NULL) { g_debug ("Adding session %s", ssid); user->sessions = g_list_prepend (user->sessions, g_strdup (ssid)); if (user->menuitem != NULL) { dbusmenu_menuitem_property_set_bool(user->menuitem, USER_ITEM_PROP_LOGGED_IN, TRUE); } } else { g_debug ("User %s already has session %s", user->user_name, ssid); } return TRUE; } static void add_sessions_for_user (UsersServiceDbus *self, UserData *user) { g_return_if_fail (IS_USERS_SERVICE_DBUS(self)); g_debug ("!!!!!!!!!! - add_sessions_for_user %i %s", (int)user->uid, user->user_name); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); GError *error; GPtrArray *sessions; int i; error = NULL; if (!org_freedesktop_ConsoleKit_Manager_get_sessions_for_unix_user(priv->ck_proxy, user->uid, &sessions, &error)) { g_debug ("Failed to call GetSessionsForUnixUser: %s", error->message); g_error_free (error); return; } for (i = 0; i < sessions->len; i++) { char *ssid; ssid = g_ptr_array_index (sessions, i); do_add_session (self, user, ssid); } g_ptr_array_foreach (sessions, (GFunc)g_free, NULL); g_ptr_array_free (sessions, TRUE); } static void seat_proxy_session_added (DBusGProxy *seat_proxy, const gchar *session_id, UsersServiceDbus *service) { g_return_if_fail(IS_USERS_SERVICE_DBUS(service)); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); uid_t uid; struct passwd *pwent; UserData *user; if (!get_unix_user (service, session_id, &uid)) { g_warning ("Failed to lookup user for session"); return; } errno = 0; pwent = getpwuid (uid); if (!pwent) { g_warning ("Failed to lookup user id %d: %s", (int)uid, g_strerror (errno)); return; } /* We need to special case guest here because it doesn't show up in the GDM user tables. */ if (g_strcmp0("guest", pwent->pw_name) == 0) { if (priv->guest_item != NULL) { dbusmenu_menuitem_property_set_bool(priv->guest_item, USER_ITEM_PROP_LOGGED_IN, TRUE); } priv->guest_session_id = g_strdup(session_id); g_debug("Found guest session: %s", priv->guest_session_id); return; } user = users_service_dbus_get_user_by_username (service, pwent->pw_name); if (!user) return; do_add_session (service, user, session_id); } static void seat_proxy_session_removed (DBusGProxy *seat_proxy, const gchar *session_id, UsersServiceDbus *service) { g_return_if_fail(IS_USERS_SERVICE_DBUS(service)); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); UserData *user; gchar *username; GList *l; username = g_hash_table_lookup (priv->sessions, session_id); if (!username) { if (g_strcmp0(session_id, priv->guest_session_id) == 0) { g_debug("Removing guest session: %s", priv->guest_session_id); if (priv->guest_item != NULL) { dbusmenu_menuitem_property_set_bool(priv->guest_item, USER_ITEM_PROP_LOGGED_IN, FALSE); } g_free(priv->guest_session_id); priv->guest_session_id = NULL; } return; } user = users_service_dbus_get_user_by_username (service, username); if (!user) return; l = g_list_find_custom (user->sessions, session_id, (GCompareFunc)g_strcmp0); if (l) { g_debug ("Removing session %s", session_id); g_free (l->data); user->sessions = g_list_delete_link (user->sessions, l); if (user->menuitem != NULL && user->sessions == NULL) { dbusmenu_menuitem_property_set_bool(user->menuitem, USER_ITEM_PROP_LOGGED_IN, FALSE); } } else { g_debug ("Session not found: %s", session_id); } } static void sync_users (UsersServiceDbus *self) { g_return_if_fail(IS_USERS_SERVICE_DBUS(self)); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); if (priv->count > MINIMUM_USERS) { GPtrArray *users = NULL; GError *error = NULL; gint i; users = g_ptr_array_new (); if (!org_freedesktop_Accounts_list_cached_users (priv->accounts_service_proxy, &users, &error)) { g_warning ("failed to retrieve user list: %s", error->message); g_error_free (error); return; } for (i = 0; i < users->len; i++) { gchar *id; DBusGProxy *proxy; UserData *user; GError *error = NULL; id = g_ptr_array_index (users, i); proxy = dbus_g_proxy_new_for_name (priv->system_bus, "org.freedesktop.Accounts", id, "org.freedesktop.DBus.Properties"); GHashTable *properties; if (!dbus_g_proxy_call (proxy, "GetAll", &error, G_TYPE_STRING, "org.freedesktop.Accounts.User", G_TYPE_INVALID, dbus_g_type_get_map ("GHashTable", G_TYPE_STRING, G_TYPE_VALUE), &properties, G_TYPE_INVALID)) { g_warning ("unable to retrieve user info: %s", error->message); g_error_free (error); continue; } user = g_hash_table_lookup (priv->users, id); // Double check we havent processed this user already if (user != NULL) { g_free(user->user_name); g_free(user->real_name); g_free(user->icon_file); user->real_name_conflict = FALSE; //continue; } else { user = g_new0 (UserData, 1); } // Can't subscribe to the Changed signal on each individual user path // for some reason. dbus_g_proxy_add_signal (proxy, "Changed", G_TYPE_INVALID); dbus_g_proxy_connect_signal (proxy, "Changed", G_CALLBACK(user_changed), self, NULL); user->uid = g_value_get_uint64 (g_hash_table_lookup (properties, "Uid")); user->user_name = g_strdup (g_value_get_string (g_hash_table_lookup (properties, "UserName"))); user->real_name = g_strdup (g_value_get_string (g_hash_table_lookup (properties, "RealName"))); user->icon_file = g_strdup (g_value_get_string (g_hash_table_lookup (properties, "IconFile"))); user->real_name_conflict = FALSE; user->menuitem = NULL; g_hash_table_unref (properties); g_hash_table_insert (priv->users, g_strdup (id), user); add_sessions_for_user (self, user); } g_ptr_array_free (users, TRUE); } } static void user_changed (DBusGProxy *proxy, gpointer user_data) { g_debug ("JUST RESYNCED THE USERS FROM A USER CHANGE"); UsersServiceDbus *service = (UsersServiceDbus *)user_data; sync_users (service); } static void user_added (DBusGProxy *proxy, const gchar *user_id, gpointer user_data) { UsersServiceDbus *service = (UsersServiceDbus *)user_data; UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); priv->count++; sync_users (service); g_signal_emit (service, signals[USER_ADDED], 0, user_id); } static void user_deleted (DBusGProxy *proxy, const gchar *user_id, gpointer user_data) { UsersServiceDbus *service = (UsersServiceDbus *)user_data; UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); priv->count--; g_hash_table_remove (priv->users, user_id); g_signal_emit (service, signals[USER_DELETED], 0, user_id); } UserData * users_service_dbus_get_user_by_username (UsersServiceDbus *self, const gchar *username) { GHashTableIter iter; gpointer value; g_return_val_if_fail(IS_USERS_SERVICE_DBUS(self), NULL); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); g_hash_table_iter_init (&iter, priv->users); while (g_hash_table_iter_next (&iter, NULL, &value)) { UserData *user = value; if (strcmp (user->user_name, username) == 0) return user; } return NULL; } GList * users_service_dbus_get_user_list (UsersServiceDbus *self) { g_return_val_if_fail(IS_USERS_SERVICE_DBUS(self), NULL); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); return g_hash_table_get_values (priv->users); } gboolean users_service_dbus_show_greeter (UsersServiceDbus *self) { g_return_val_if_fail(IS_USERS_SERVICE_DBUS(self), FALSE); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); return org_freedesktop_DisplayManager_Seat_switch_to_greeter(priv->display_manager_proxy, NULL); } /* Activates the guest account if it can. */ gboolean users_service_dbus_activate_guest_session (UsersServiceDbus *self) { g_return_val_if_fail(IS_USERS_SERVICE_DBUS(self), FALSE); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); return org_freedesktop_DisplayManager_Seat_switch_to_guest(priv->display_manager_proxy, "", NULL); } /* Activates a specific user */ gboolean users_service_dbus_activate_user_session (UsersServiceDbus *self, UserData *user) { g_return_val_if_fail(IS_USERS_SERVICE_DBUS(self), FALSE); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); return org_freedesktop_DisplayManager_Seat_switch_to_user(priv->display_manager_proxy, user->user_name, "", NULL); } gboolean users_service_dbus_can_activate_session (UsersServiceDbus *self) { g_return_val_if_fail(IS_USERS_SERVICE_DBUS(self), FALSE); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); gboolean can_activate = FALSE; GError *error = NULL; if (!priv->seat_proxy) { create_seat_proxy (self); } if (!priv->seat || priv->seat[0] == '\0') { return FALSE; } if (!dbus_g_proxy_call (priv->seat_proxy, "CanActivateSessions", &error, G_TYPE_INVALID, G_TYPE_BOOLEAN, &can_activate, G_TYPE_INVALID)) { if (error != NULL){ g_warning ("Failed to determine if seat can activate sessions: %s", error->message); g_error_free (error); } return FALSE; } return can_activate; } /* Sets the menu item that represents the guest account */ void users_service_dbus_set_guest_item (UsersServiceDbus * self, DbusmenuMenuitem * mi) { g_return_if_fail(IS_USERS_SERVICE_DBUS(self)); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); priv->guest_item = mi; if (priv->guest_session_id != NULL) { dbusmenu_menuitem_property_set_bool(priv->guest_item, USER_ITEM_PROP_LOGGED_IN, TRUE); } return; } gboolean users_service_dbus_guest_session_enabled (UsersServiceDbus * self) { g_return_val_if_fail(IS_USERS_SERVICE_DBUS(self), FALSE); UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); return priv->guest_session_enabled; }