/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 2; tab-width: 2 -*- */ /* * Copyright 2009 Canonical Ltd. * * Authors: * Cody Russell <crussell@canonical.com> * * 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 <http://www.gnu.org/licenses/>. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include <string.h> #include <errno.h> #include <pwd.h> #include <dbus/dbus-glib.h> #include <dbus/dbus-glib.h> #include <dbus/dbus-glib-lowlevel.h> #include "dbus-shared-names.h" #include "users-service-dbus.h" #include "users-service-client.h" #include "users-service-marshal.h" 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_gdm_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 users_loaded (DBusGProxy *proxy, gpointer user_data); static void user_added (DBusGProxy *proxy, gint64 uid, gpointer user_data); static void user_removed (DBusGProxy *proxy, gint64 uid, gpointer user_data); static void user_updated (DBusGProxy *proxy, guint uid, 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 gboolean do_add_session (UsersServiceDbus *service, UserData *user, const gchar *ssid); static gchar * get_seat_internal (UsersServiceDbus *self); /* Private */ typedef struct _UsersServiceDbusPrivate UsersServiceDbusPrivate; struct _UsersServiceDbusPrivate { GHashTable *users; gint count; gchar *seat; gchar *ssid; DBusGConnection *system_bus; DBusGProxy *gdm_proxy; DBusGProxy *ck_proxy; DBusGProxy *seat_proxy; DBusGProxy *session_proxy; GHashTable *exclusions; GHashTable *sessions; }; #define USERS_SERVICE_DBUS_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), USERS_SERVICE_DBUS_TYPE, UsersServiceDbusPrivate)) /* Signals */ enum { USERS_LOADED, USER_ADDED, USER_REMOVED, USER_UPDATED, 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[USERS_LOADED] = g_signal_new ("users-loaded", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (UsersServiceDbusClass, users_loaded), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); 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, _users_service_marshal_VOID__INT64, G_TYPE_NONE, 1, G_TYPE_INT64); signals[USER_REMOVED] = g_signal_new ("user-removed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (UsersServiceDbusClass, user_removed), NULL, NULL, _users_service_marshal_VOID__INT64, G_TYPE_NONE, 1, G_TYPE_INT64); signals[USER_UPDATED] = g_signal_new ("user-updated", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (UsersServiceDbusClass, user_updated), NULL, NULL, _users_service_marshal_VOID__INT64, G_TYPE_NONE, 1, G_TYPE_INT64); } 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; /* 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: %s", error->message); 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); dbus_g_object_register_marshaller (_users_service_marshal_VOID__INT64, G_TYPE_NONE, G_TYPE_INT64, G_TYPE_INVALID); create_gdm_proxy (self); create_ck_proxy (self); create_seat_proxy (self); if (priv->gdm_proxy) users_loaded (priv->gdm_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) { G_OBJECT_CLASS (users_service_dbus_parent_class)->finalize (object); } static void create_gdm_proxy (UsersServiceDbus *self) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); GError *error = NULL; priv->gdm_proxy = dbus_g_proxy_new_for_name_owner (priv->system_bus, "org.gnome.DisplayManager", "/org/gnome/DisplayManager/UserManager", "org.gnome.DisplayManager.UserManager", &error); if (!priv->gdm_proxy) { if (error != NULL) { g_warning ("Unable to get DisplayManager proxy on system bus: %s", error->message); g_error_free (error); } return; } dbus_g_proxy_add_signal (priv->gdm_proxy, "UsersLoaded", G_TYPE_INVALID); dbus_g_proxy_add_signal (priv->gdm_proxy, "UserAdded", G_TYPE_INT64, G_TYPE_INVALID); dbus_g_proxy_add_signal (priv->gdm_proxy, "UserRemoved", G_TYPE_INT64, G_TYPE_INVALID); dbus_g_proxy_add_signal (priv->gdm_proxy, "UserUpdated", G_TYPE_INT64, G_TYPE_INVALID); dbus_g_proxy_connect_signal (priv->gdm_proxy, "UsersLoaded", G_CALLBACK (users_loaded), self, NULL); dbus_g_proxy_connect_signal (priv->gdm_proxy, "UserAdded", G_CALLBACK (user_added), self, NULL); dbus_g_proxy_connect_signal (priv->gdm_proxy, "UserRemoved", G_CALLBACK (user_removed), self, NULL); dbus_g_proxy_connect_signal (priv->gdm_proxy, "UserUpdated", G_CALLBACK (user_updated), self, NULL); } 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; } } 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); } 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, "org.freedesktop.ConsoleKit", priv->ssid, "org.freedesktop.ConsoleKit.Session"); 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 (service); return seat; } static gchar * get_seat_internal (UsersServiceDbus *self) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); GError *error = NULL; gchar *seat = NULL; if (!dbus_g_proxy_call (priv->session_proxy, "GetSeatId", &error, G_TYPE_INVALID, DBUS_TYPE_G_OBJECT_PATH, &seat, G_TYPE_INVALID)) { 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; if (dbus_g_proxy_call (priv->session_proxy, "GetUnixUser", &error, G_TYPE_INVALID, G_TYPE_UINT, &uid, G_TYPE_INVALID)) { if (error) { g_warning ("Failed to call GetUnixUser: %s", error->message); g_error_free (error); } return FALSE; } if (uidp != NULL) { *uidp = (uid_t)uid; } 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; GList *l; seat = get_seat_internal (service); if (!seat || !priv->seat || strcmp (seat, priv->seat) != 0) return FALSE; if (!dbus_g_proxy_call (priv->session_proxy, "GetX11Display", &error, G_TYPE_INVALID, G_TYPE_STRING, &xdisplay, G_TYPE_INVALID)) { if (error) { g_debug ("Failed to call GetX11Display: %s", error->message); g_error_free (error); } return FALSE; } 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)); } 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) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); GError *error; GPtrArray *sessions; int i; error = NULL; if (!dbus_g_proxy_call (priv->ck_proxy, "GetSessionsForUnixUser", &error, G_TYPE_UINT, user->uid, G_TYPE_INVALID, dbus_g_type_get_collection ("GPtrArray", DBUS_TYPE_G_OBJECT_PATH), &sessions, G_TYPE_INVALID)) { 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) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); uid_t uid; gboolean res; 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; } user = g_hash_table_lookup (priv->users, pwent->pw_name); if (!user) { return; } res = do_add_session (service, user, session_id); } static void seat_proxy_session_removed (DBusGProxy *seat_proxy, const gchar *session_id, UsersServiceDbus *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) return; user = g_hash_table_lookup (priv->users, 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); } else { g_debug ("Session not found: %s", session_id); } } static void sync_users (UsersServiceDbus *self) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); if (g_hash_table_size (priv->users) > 0) { return; } if (priv->count > MINIMUM_USERS && priv->count < MAXIMUM_USERS) { GArray *uids = NULL; GPtrArray *users_info = NULL; GError *error = NULL; gint i; uids = g_array_new (FALSE, FALSE, sizeof (gint64)); if (!org_gnome_DisplayManager_UserManager_get_user_list (priv->gdm_proxy, &uids, &error)) { g_warning ("failed to retrieve user list: %s", error->message); g_error_free (error); return; } users_info = g_ptr_array_new (); if (!org_gnome_DisplayManager_UserManager_get_users_info (priv->gdm_proxy, uids, &users_info, &error)) { g_warning ("failed to retrieve user info: %s", error->message); g_error_free (error); return; } for (i = 0; i < users_info->len; i++) { GValueArray *values; UserData *user; values = g_ptr_array_index (users_info, i); user = g_new0 (UserData, 1); user->uid = g_value_get_int64 (g_value_array_get_nth (values, 0)); user->user_name = g_strdup (g_value_get_string (g_value_array_get_nth (values, 1))); user->real_name = g_strdup (g_value_get_string (g_value_array_get_nth (values, 2))); user->shell = g_strdup (g_value_get_string (g_value_array_get_nth (values, 3))); user->login_count = g_value_get_int (g_value_array_get_nth (values, 4)); user->icon_url = g_strdup (g_value_get_string (g_value_array_get_nth (values, 5))); user->real_name_conflict = FALSE; g_hash_table_insert (priv->users, g_strdup (user->user_name), user); add_sessions_for_user (self, user); } } } static void users_loaded (DBusGProxy *proxy, gpointer user_data) { UsersServiceDbus *service; UsersServiceDbusPrivate *priv; GError *error = NULL; gint count; g_return_if_fail (proxy != NULL); service = (UsersServiceDbus *)user_data; priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); if (!org_gnome_DisplayManager_UserManager_count_users (proxy, &count, &error)) { g_warning ("failed to retrieve user count: %s", error->message); g_error_free (error); return; } priv->count = count; sync_users (service); } static gboolean session_is_login_window (UsersServiceDbus *self, const char *ssid) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); DBusGProxy *proxy = NULL; GError *error = NULL; char *type = NULL; if (!(proxy = dbus_g_proxy_new_for_name (priv->system_bus, "org.freedesktop.ConsoleKit", ssid, "org.freedesktop.ConsoleKit.Session"))) { g_warning ("Failed to get ConsoleKit proxy"); return FALSE; } if (!dbus_g_proxy_call (proxy, "GetSessionType", &error, G_TYPE_INVALID, G_TYPE_STRING, &type, G_TYPE_INVALID)) { g_warning ("Can't call GetSessionType: %s", error->message); g_error_free (error); if (proxy) g_object_unref (proxy); return FALSE; } if (proxy) g_object_unref (proxy); return (type && type[0] != '\0' && strcmp (type, "LoginWindow") == 0); } static char * get_login_session (UsersServiceDbus *self) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); gboolean can_activate; GError *error = NULL; GPtrArray *sessions = NULL; char *ssid = NULL; int i; if (!priv->seat || priv->seat[0] == '\0') { return NULL; } if (!dbus_g_proxy_call (priv->seat_proxy, "CanActivateSessions", &error, G_TYPE_INVALID, G_TYPE_BOOLEAN, &can_activate, G_TYPE_INVALID)) { g_warning ("Failed to call CanActivateSessions: %s", error->message); g_error_free (error); return NULL; } if (!can_activate) { return NULL; } error = NULL; if (!dbus_g_proxy_call (priv->seat_proxy, "GetSessions", &error, G_TYPE_INVALID, dbus_g_type_get_collection ("GPtrArray", DBUS_TYPE_G_OBJECT_PATH), &sessions, G_TYPE_INVALID)) { g_warning ("Failed to call GetSessions: %s", error->message); g_error_free (error); return NULL; } for (i = 0; i < sessions->len; i++) { char *s = g_ptr_array_index (sessions, i); if (session_is_login_window (self, s)) { ssid = g_strdup (s); break; } } g_ptr_array_foreach (sessions, (GFunc)g_free, NULL); g_ptr_array_free (sessions, TRUE); return ssid; } static gboolean activate_user_session (UsersServiceDbus *self, const char *seat, const char *ssid) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); DBusMessage *message = NULL; DBusMessage *reply = NULL; DBusError error; if (!(message = dbus_message_new_method_call ("org.freedesktop.ConsoleKit", seat, "org.freedesktop.ConsoleKit.Seat", "ActivateSession"))) { return FALSE; } if (!dbus_message_append_args (message, DBUS_TYPE_OBJECT_PATH, &ssid, DBUS_TYPE_INVALID)) { return FALSE; } dbus_error_init (&error); if (!(reply = dbus_connection_send_with_reply_and_block (dbus_g_connection_get_connection (priv->system_bus), message, -1, &error))) { if (dbus_error_is_set (&error)) { g_warning ("Can't activate session: %s", error.message); dbus_error_free (&error); return FALSE; } } if (message) { dbus_message_unref (message); } if (reply) { dbus_message_unref (reply); } return TRUE; } gboolean start_new_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); GError *error = NULL; char *ssid; ssid = get_login_session (self); if (ssid) { if (!activate_user_session (self, priv->seat, ssid)) { return FALSE; } } if (!g_spawn_command_line_async ("gdmflexiserver -s", &error)) { g_warning ("Failed to start new login session: %s", error->message); g_error_free (error); return FALSE; } return TRUE; } static void user_added (DBusGProxy *proxy, gint64 uid, gpointer user_data) { UsersServiceDbus *service = (UsersServiceDbus *)user_data; UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); UserData *user = g_new0 (UserData, 1); GError *error = NULL; priv->count++; if (priv->count < MAXIMUM_USERS) { if ((priv->count - g_hash_table_size (priv->users)) > 1) { sync_users (service); } else { if (!org_gnome_DisplayManager_UserManager_get_user_info (proxy, uid, &user->user_name, &user->real_name, &user->shell, &user->login_count, &user->icon_url, &error)) { g_warning ("unable to retrieve user info: %s", error->message); g_error_free (error); g_free (user); return; } user->uid = uid; g_hash_table_insert (priv->users, g_strdup (user->user_name), user); g_signal_emit (G_OBJECT (service), signals[USER_ADDED], 0, user, TRUE); } } } static gboolean compare_users_by_uid (gpointer key, gpointer value, gpointer user_data) { return (GPOINTER_TO_UINT (value) == GPOINTER_TO_UINT (user_data)); } static void user_removed (DBusGProxy *proxy, gint64 uid, gpointer user_data) { UsersServiceDbus *service = (UsersServiceDbus *)user_data; UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); UserData *user; gint size; size = g_hash_table_size (priv->users); priv->count--; if (size == 0 || (size - priv->count) > 1) { sync_users (service); } else { user = g_hash_table_find (priv->users, compare_users_by_uid, GUINT_TO_POINTER ((gint)uid)); if (user != NULL) { g_hash_table_remove (priv->users, user->user_name); } } } static void user_updated (DBusGProxy *proxy, guint uid, gpointer user_data) { #if 0 // XXX - TODO UsersServiceDbus *service = (UsersServiceDbus *)user_data; UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service); UserData *user; user = g_hash_table_find (priv->users, compare_users_by_uid, GUINT_TO_POINTER (uid)); #endif } gint users_service_dbus_get_user_count (UsersServiceDbus *self) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); return priv->count; } GList * users_service_dbus_get_user_list (UsersServiceDbus *self) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); return g_hash_table_get_values (priv->users); } gboolean users_service_dbus_activate_user_session (UsersServiceDbus *self, UserData *user) { UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self); DBusMessage *message = NULL; DBusMessage *reply = NULL; DBusError error; dbus_error_init (&error); if (!(message = dbus_message_new_method_call ("org.gnome.DisplayManager", "/org/gnome/DisplayManager/LocalDisplayFactory", "org.gnome.DisplayManager.LocalDisplayFactory", "SwitchToUser"))) { g_warning ("failed to create new message"); return FALSE; } if (!dbus_message_append_args (message, DBUS_TYPE_STRING, &user->user_name, DBUS_TYPE_INVALID)) { g_warning ("failed to append args"); return FALSE; } if (!(reply = dbus_connection_send_with_reply_and_block (dbus_g_connection_get_connection (priv->system_bus), message, -1, &error))) { if (dbus_error_is_set (&error)) { g_warning ("Failed to send message: %s", error.message); dbus_error_free (&error); return FALSE; } } if (message) { dbus_message_unref (message); } if (reply) { dbus_message_unref (reply); } dbus_error_free (&error); return TRUE; } gboolean users_service_dbus_can_activate_session (UsersServiceDbus *self) { 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)) { g_warning ("Failed to determine if seat can activate sessions: %s", error->message); g_error_free (error); return FALSE; } return can_activate; }