diff options
Diffstat (limited to 'src/backend-dbus/guest.c')
| -rw-r--r-- | src/backend-dbus/guest.c | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/src/backend-dbus/guest.c b/src/backend-dbus/guest.c new file mode 100644 index 0000000..3269097 --- /dev/null +++ b/src/backend-dbus/guest.c @@ -0,0 +1,394 @@ +/* + * Copyright 2013 Canonical Ltd. + * + * Authors: + * Charles Kerr <charles.kerr@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/>. + */ + +#include <glib.h> + +#include "guest.h" + +struct _IndicatorSessionGuestDbusPriv +{ + GCancellable * cancellable; + + Login1Manager * login1_manager; + Login1Seat * login1_seat; + DisplayManagerSeat * dm_seat; + + gboolean guest_is_active; + gboolean guest_is_logged_in; + gboolean guest_is_allowed; +}; + +typedef IndicatorSessionGuestDbusPriv priv_t; + +G_DEFINE_TYPE (IndicatorSessionGuestDbus, + indicator_session_guest_dbus, + INDICATOR_TYPE_SESSION_GUEST) + +/*** +**** +***/ + +static void +set_guest_is_allowed_flag (IndicatorSessionGuestDbus * self, gboolean b) +{ + priv_t * p = self->priv; + + if (p->guest_is_allowed != b) + { + p->guest_is_allowed = b; + + indicator_session_guest_notify_allowed (INDICATOR_SESSION_GUEST (self)); + } +} + +static void +set_guest_is_logged_in_flag (IndicatorSessionGuestDbus * self, gboolean b) +{ + priv_t * p = self->priv; + + if (p->guest_is_logged_in != b) + { + p->guest_is_logged_in = b; + + indicator_session_guest_notify_logged_in (INDICATOR_SESSION_GUEST (self)); + } +} + +static void +set_guest_is_active_flag (IndicatorSessionGuestDbus * self, gboolean b) +{ + priv_t * p = self->priv; + + if (p->guest_is_active != b) + { + p->guest_is_active = b; + + indicator_session_guest_notify_active (INDICATOR_SESSION_GUEST(self)); + } +} + +/*** +**** +***/ + +/* walk the sessions to see if guest is logged in or active */ +static void +on_login1_manager_session_list_ready (GObject * o, + GAsyncResult * res, + gpointer gself) +{ + GVariant * sessions; + GError * err; + + sessions = NULL; + err = NULL; + login1_manager_call_list_sessions_finish (LOGIN1_MANAGER(o), + &sessions, + res, + &err); + if (err != NULL) + { + if (!g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) + g_warning ("%s: %s", G_STRFUNC, err->message); + + g_error_free (err); + } + else + { + const gchar * const current_seat_id = g_getenv ("XDG_SEAT"); + const gchar * const current_session_id = g_getenv ("XDG_SESSION_ID"); + gboolean is_logged_in = FALSE; + gboolean is_active = FALSE; + const gchar * session_id = NULL; + guint32 uid = 0; + const gchar * user_name = NULL; + const gchar * seat_id = NULL; + GVariantIter iter; + + g_variant_iter_init (&iter, sessions); + while (g_variant_iter_loop (&iter, "(&su&s&so)", &session_id, + &uid, + &user_name, + &seat_id, + NULL)) + { + gboolean is_current_session; + gboolean is_guest; + + is_current_session = !g_strcmp0 (current_seat_id, seat_id) + && !g_strcmp0 (current_session_id, session_id); + + is_guest = g_str_has_prefix (user_name, "guest-") + && (uid < 1000); + + if (is_guest) + { + is_logged_in = TRUE; + + is_active = is_current_session; + } + } + + set_guest_is_logged_in_flag (gself, is_logged_in); + set_guest_is_active_flag (gself, is_active); + + g_variant_unref (sessions); + } +} + +static void +update_session_list (IndicatorSessionGuestDbus * self) +{ + priv_t * p = self->priv; + + if (p->login1_manager != NULL) + { + login1_manager_call_list_sessions (p->login1_manager, + p->cancellable, + on_login1_manager_session_list_ready, + self); + } +} + +static void +set_login1_manager (IndicatorSessionGuestDbus * self, + Login1Manager * login1_manager) +{ + priv_t * p = self->priv; + + if (p->login1_manager != NULL) + { + g_signal_handlers_disconnect_by_data (p->login1_manager, self); + + g_clear_object (&p->login1_manager); + } + + if (login1_manager != NULL) + { + p->login1_manager = g_object_ref (login1_manager); + + g_signal_connect_swapped (login1_manager, "session-new", + G_CALLBACK(update_session_list), self); + g_signal_connect_swapped (login1_manager, "session-removed", + G_CALLBACK(update_session_list), self); + update_session_list (self); + } +} + +static void +set_login1_seat (IndicatorSessionGuestDbus * self, + Login1Seat * login1_seat) +{ + priv_t * p = self->priv; + + if (p->login1_seat != NULL) + { + g_signal_handlers_disconnect_by_data (p->login1_seat, self); + g_clear_object (&p->login1_seat); + } + + if (login1_seat != NULL) + { + p->login1_seat = g_object_ref (login1_seat); + + g_signal_connect_swapped (login1_seat, "notify::active-session", + G_CALLBACK(update_session_list), self); + update_session_list (self); + } +} + +/*** +**** +***/ + +static void +on_switch_to_guest_done (GObject * o, + GAsyncResult * res, + gpointer unused G_GNUC_UNUSED) +{ + GError * err; + + err = NULL; + display_manager_seat_call_switch_to_guest_finish (DISPLAY_MANAGER_SEAT(o), + res, + &err); + if (err != NULL) + { + if (!g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) + g_warning ("%s %s: %s", G_STRLOC, G_STRFUNC, err->message); + + g_error_free (err); + } +} + +static void +my_switch_to_guest (IndicatorSessionGuest * guest) +{ + IndicatorSessionGuestDbus * self = INDICATOR_SESSION_GUEST_DBUS(guest); + + g_return_if_fail (self != NULL); + g_return_if_fail (self->priv->dm_seat != NULL); + + display_manager_seat_call_switch_to_guest (self->priv->dm_seat, + "", + self->priv->cancellable, + on_switch_to_guest_done, + self); +} + +static void +on_notify_has_guest_account (DisplayManagerSeat * dm_seat, + GParamSpec * pspec G_GNUC_UNUSED, + IndicatorSessionGuestDbus * self) +{ + gboolean guest_exists = display_manager_seat_get_has_guest_account (dm_seat); + set_guest_is_allowed_flag (self, guest_exists); +} + +static void +set_display_manager_seat (IndicatorSessionGuestDbus * self, + DisplayManagerSeat * dm_seat) +{ + priv_t * p = self->priv; + + if (p->dm_seat != NULL) + { + g_signal_handlers_disconnect_by_data (p->dm_seat, self); + + g_clear_object (&p->dm_seat); + } + + if (dm_seat != NULL) + { + p->dm_seat = g_object_ref (dm_seat); + + g_signal_connect (dm_seat, "notify::has-guest-account", + G_CALLBACK(on_notify_has_guest_account), self); + on_notify_has_guest_account (dm_seat, NULL, self); + } +} + +/*** +**** IndiatorSessionGuest Virtual Functions +***/ + +static gboolean +my_is_allowed (IndicatorSessionGuest * self) +{ + g_return_val_if_fail (INDICATOR_IS_SESSION_GUEST_DBUS(self), FALSE); + + return INDICATOR_SESSION_GUEST_DBUS(self)->priv->guest_is_allowed; +} + +static gboolean +my_is_logged_in (IndicatorSessionGuest * self) +{ + g_return_val_if_fail (INDICATOR_IS_SESSION_GUEST_DBUS(self), FALSE); + + return INDICATOR_SESSION_GUEST_DBUS(self)->priv->guest_is_logged_in; +} + +static gboolean +my_is_active (IndicatorSessionGuest * self) +{ + g_return_val_if_fail (INDICATOR_IS_SESSION_GUEST_DBUS(self), FALSE); + + return INDICATOR_SESSION_GUEST_DBUS(self)->priv->guest_is_active; +} + +/*** +**** GObject Virtual Functions +***/ + +static void +my_dispose (GObject * o) +{ + IndicatorSessionGuestDbus * self = INDICATOR_SESSION_GUEST_DBUS (o); + + if (self->priv->cancellable != NULL) + { + g_cancellable_cancel (self->priv->cancellable); + g_clear_object (&self->priv->cancellable); + } + + set_login1_seat (self, NULL); + set_login1_manager (self, NULL); + set_display_manager_seat (self, NULL); + + G_OBJECT_CLASS (indicator_session_guest_dbus_parent_class)->dispose (o); +} + +/*** +**** Instantiation +***/ + +static void +indicator_session_guest_dbus_class_init (IndicatorSessionGuestDbusClass * klass) +{ + GObjectClass * object_class; + IndicatorSessionGuestClass * guest_class; + + object_class = G_OBJECT_CLASS (klass); + object_class->dispose = my_dispose; + + guest_class = INDICATOR_SESSION_GUEST_CLASS (klass); + guest_class->is_allowed = my_is_allowed; + guest_class->is_logged_in = my_is_logged_in; + guest_class->is_active = my_is_active; + guest_class->switch_to_guest = my_switch_to_guest; + + g_type_class_add_private (klass, sizeof (IndicatorSessionGuestDbusPriv)); +} + +static void +indicator_session_guest_dbus_init (IndicatorSessionGuestDbus * self) +{ + priv_t * p; + + p = G_TYPE_INSTANCE_GET_PRIVATE (self, + INDICATOR_TYPE_SESSION_GUEST_DBUS, + IndicatorSessionGuestDbusPriv); + p->cancellable = g_cancellable_new (); + self->priv = p; +} + +/*** +**** Public +***/ + +IndicatorSessionGuest * +indicator_session_guest_dbus_new (void) +{ + gpointer o = g_object_new (INDICATOR_TYPE_SESSION_GUEST_DBUS, NULL); + + return INDICATOR_SESSION_GUEST (o); +} + +void +indicator_session_guest_dbus_set_proxies (IndicatorSessionGuestDbus * self, + Login1Manager * login1_manager, + Login1Seat * login1_seat, + DisplayManagerSeat * dm_seat) +{ + g_return_if_fail (INDICATOR_IS_SESSION_GUEST_DBUS(self)); + + set_login1_manager (self, login1_manager); + set_login1_seat (self, login1_seat); + set_display_manager_seat (self, dm_seat); +} |