diff options
Diffstat (limited to 'panels/sharing/cc-remote-login.c')
-rw-r--r-- | panels/sharing/cc-remote-login.c | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/panels/sharing/cc-remote-login.c b/panels/sharing/cc-remote-login.c new file mode 100644 index 0000000..d185f7d --- /dev/null +++ b/panels/sharing/cc-remote-login.c @@ -0,0 +1,306 @@ +/* + * Copyright (C) 2013 Intel, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Author: Thomas Wood <thomas.wood@intel.com> + * + */ +#include "cc-remote-login.h" +#include <gio/gio.h> + +#ifndef SSHD_SERVICE +#define SSHD_SERVICE "sshd.service" +#endif + +typedef struct +{ + GtkSwitch *gtkswitch; + GtkWidget *button; + GCancellable *cancellable; +} CallbackData; + +G_DEFINE_AUTOPTR_CLEANUP_FUNC (CallbackData, g_free) + +static void +set_switch_state (GtkSwitch *gtkswitch, + gboolean active) +{ + if (gtk_switch_get_active (gtkswitch) != active) + { + g_object_set_data (G_OBJECT (gtkswitch), "set-from-dbus", + GINT_TO_POINTER (1)); + gtk_switch_set_active (gtkswitch, active); + } + gtk_widget_set_sensitive (GTK_WIDGET (gtkswitch), TRUE); +} + +static void +active_state_ready_callback (GObject *source_object, + GAsyncResult *result, + gpointer user_data) +{ + g_autoptr(CallbackData) callback_data = user_data; + g_autoptr(GVariant) active_variant = NULL; + g_autoptr(GVariant) child_variant = NULL; + g_autoptr(GVariant) tmp_variant = NULL; + const gchar *active_state; + gboolean active; + g_autoptr(GError) error = NULL; + + active_variant = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object), + result, &error); + + if (!active_variant) + { + /* print a warning if there was an error but the operation was not + * cancelled */ + if (!g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) + g_warning ("Error getting remote login state: %s", error->message); + + /* the switch will be remain insensitive, since the current state could + * not be determined */ + return; + } + + child_variant = g_variant_get_child_value (active_variant, 0); + tmp_variant = g_variant_get_variant (child_variant); + active_state = g_variant_get_string (tmp_variant, NULL); + + active = g_str_equal (active_state, "active"); + + /* set the switch to the correct state */ + if (callback_data->gtkswitch) + set_switch_state (callback_data->gtkswitch, active); +} + +static void +path_ready_callback (GObject *source_object, + GAsyncResult *result, + gpointer user_data) +{ + g_autoptr(CallbackData) callback_data = user_data; + g_autoptr(GVariant) path_variant = NULL; + g_autoptr(GVariant) child_variant = NULL; + const gchar *object_path; + g_autoptr(GError) error = NULL; + + path_variant = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object), + result, &error); + + if (!path_variant) + { + if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) + return; + + /* this may fail if systemd or remote login service is not available */ + g_debug ("Error getting remote login state: %s", error->message); + + /* hide the remote login button, since the service is not available */ + if (callback_data->button) + gtk_widget_hide (callback_data->button); + + return; + } + + child_variant = g_variant_get_child_value (path_variant, 0); + object_path = g_variant_get_string (child_variant, NULL); + + g_dbus_connection_call (G_DBUS_CONNECTION (source_object), + "org.freedesktop.systemd1", + object_path, + "org.freedesktop.DBus.Properties", + "Get", + g_variant_new ("(ss)", + "org.freedesktop.systemd1.Unit", + "ActiveState"), + (GVariantType*) "(v)", + G_DBUS_CALL_FLAGS_NONE, + -1, + callback_data->cancellable, + active_state_ready_callback, + callback_data); + g_steal_pointer (&callback_data); +} + +static void +state_ready_callback (GObject *source_object, + GAsyncResult *result, + gpointer user_data) +{ + g_autoptr(CallbackData) callback_data = user_data; + g_autoptr(GVariant) state_variant = NULL; + g_autoptr(GVariant) child_variant = NULL; + const gchar *state_string; + g_autoptr(GError) error = NULL; + + state_variant = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object), + result, &error); + if (!state_variant) + { + if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) + return; + + /* this may fail if systemd or remote login service is not available */ + g_debug ("Error getting remote login state: %s", error->message); + + /* hide the remote login button, since the service is not available */ + if (callback_data->button) + gtk_widget_hide (callback_data->button); + + return; + } + + child_variant = g_variant_get_child_value (state_variant, 0); + state_string = g_variant_get_string (child_variant, NULL); + + if (g_str_equal (state_string, "enabled")) + { + /* service is enabled, so check whether it is running or not */ + g_dbus_connection_call (G_DBUS_CONNECTION (source_object), + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "GetUnit", + g_variant_new ("(s)", SSHD_SERVICE), + (GVariantType*) "(o)", + G_DBUS_CALL_FLAGS_NONE, + -1, + callback_data->cancellable, + path_ready_callback, + callback_data); + g_steal_pointer (&callback_data); + } + else if (g_str_equal (state_string, "disabled")) + { + /* service is available, but is currently disabled */ + set_switch_state (callback_data->gtkswitch, FALSE); + } + else + { + /* unknown state */ + g_warning ("Unknown state %s for %s", state_string, SSHD_SERVICE); + } +} + +static void +bus_ready_callback (GObject *source_object, + GAsyncResult *result, + gpointer user_data) +{ + g_autoptr(CallbackData) callback_data = user_data; + g_autoptr(GDBusConnection) connection = NULL; + g_autoptr(GError) error = NULL; + + connection = g_bus_get_finish (result, &error); + + if (!connection) + { + if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) + g_warning ("Error getting remote login state: %s", error->message); + + return; + } + + g_dbus_connection_call (connection, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "GetUnitFileState", + g_variant_new ("(s)", SSHD_SERVICE), + (GVariantType*) "(s)", + G_DBUS_CALL_FLAGS_NONE, + -1, + callback_data->cancellable, + state_ready_callback, + callback_data); + g_steal_pointer (&callback_data); +} + +void +cc_remote_login_get_enabled (GCancellable *cancellable, + GtkSwitch *gtkswitch, + GtkWidget *button) +{ + CallbackData *callback_data; + + /* disable the switch until the current state is known */ + gtk_widget_set_sensitive (GTK_WIDGET (gtkswitch), FALSE); + + callback_data = g_new (CallbackData, 1); + callback_data->gtkswitch = gtkswitch; + callback_data->button = button; + callback_data->cancellable = cancellable; + + g_bus_get (G_BUS_TYPE_SYSTEM, callback_data->cancellable, + bus_ready_callback, callback_data); +} + +static gint std_err; + +static void +child_watch_func (GPid pid, + gint status, + gpointer user_data) +{ + g_autoptr(CallbackData) callback_data = user_data; + if (status != 0) + { + g_warning ("Error enabling or disabling remote login service"); + + /* make sure the switch reflects the current status */ + cc_remote_login_get_enabled (callback_data->cancellable, callback_data->gtkswitch, NULL); + } + g_spawn_close_pid (pid); + + gtk_widget_set_sensitive (GTK_WIDGET (callback_data->gtkswitch), TRUE); +} + +void +cc_remote_login_set_enabled (GCancellable *cancellable, + GtkSwitch *gtkswitch) +{ + gchar *command[] = { "pkexec", LIBEXECDIR "/cc-remote-login-helper", NULL, + NULL }; + g_autoptr(GError) error = NULL; + GPid pid; + CallbackData *callback_data; + + if (GPOINTER_TO_INT (g_object_get_data (G_OBJECT (gtkswitch), "set-from-dbus")) == 1) + { + g_object_set_data (G_OBJECT (gtkswitch), "set-from-dbus", NULL); + return; + } + + if (gtk_switch_get_active (gtkswitch)) + command[2] = "enable"; + else + command[2] = "disable"; + + gtk_widget_set_sensitive (GTK_WIDGET (gtkswitch), FALSE); + + g_spawn_async_with_pipes (NULL, command, NULL, + G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD, NULL, + NULL, &pid, NULL, NULL, &std_err, &error); + + callback_data = g_new0 (CallbackData, 1); + callback_data->gtkswitch = gtkswitch; + callback_data->cancellable = cancellable; + + g_child_watch_add (pid, child_watch_func, callback_data); + + if (error) + g_error ("Error running cc-remote-login-helper: %s", error->message); +} |