diff options
Diffstat (limited to 'src/lock-helper.c')
| -rw-r--r-- | src/lock-helper.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/lock-helper.c b/src/lock-helper.c index e69de29..0df840e 100644 --- a/src/lock-helper.c +++ b/src/lock-helper.c @@ -0,0 +1,159 @@ + +#include <dbus/dbus-glib.h> +#include "lock-helper.h" + +static DBusGProxy * gdm_settings_proxy = NULL; +static gboolean gdm_auto_login = FALSE; +static const gchar * gdm_auto_login_string = "daemon/AutomaticLoginEnable"; + +static gboolean is_guest = FALSE; + +static gdm_autologin_cb_t gdm_autologin_cb = NULL; + +/* This is our logic on whether the screen should be locked + or not. It effects everything else. */ +gboolean +will_lock_screen (void) +{ + if (gdm_auto_login) { + return FALSE; + } + if (is_guest) { + return FALSE; + } + + return TRUE; +} + +/* Respond to the signal of autologin changing to see if the + setting for timed login changes. */ +static void +gdm_settings_change (DBusGProxy * proxy, const gchar * value, const gchar * old, const gchar * new, gpointer data) +{ + if (g_strcmp0(value, gdm_auto_login_string)) { + /* This is not a setting that we care about, + there is only one. */ + return; + } + g_debug("GDM Settings change: %s", new); + + if (g_strcmp0(new, "true") == 0) { + gdm_auto_login = TRUE; + } else { + gdm_auto_login = FALSE; + } + + if (gdm_autologin_cb != NULL) { + gdm_autologin_cb(); + } + + return; +} + +/* Get back the data from querying to see if there is auto + login enabled in GDM */ +static void +gdm_get_autologin (DBusGProxy * proxy, DBusGProxyCall * call, gpointer data) +{ + GError * error = NULL; + gchar * value = NULL; + + if (!dbus_g_proxy_end_call(proxy, call, &error, G_TYPE_STRING, &value, G_TYPE_INVALID)) { + g_warning("Unable to get autologin setting: %s", error != NULL ? error->message : "null"); + g_error_free(error); + return; + } + + g_return_if_fail(value != NULL); + gdm_settings_change(proxy, gdm_auto_login_string, NULL, value, NULL); + + return; +} + +/* Sets up the proxy and queries for the setting to know + whether we're doing an autologin. */ +static void +build_gdm_proxy (void) +{ + g_return_if_fail(gdm_settings_proxy == NULL); + + /* Grab the system bus */ + DBusGConnection * bus = dbus_g_bus_get(DBUS_BUS_SYSTEM, NULL); + g_return_if_fail(bus != NULL); + + /* Get the settings proxy */ + gdm_settings_proxy = dbus_g_proxy_new_for_name_owner(bus, + "org.gnome.DisplayManager", + "/org/gnome/DisplayManager/Settings", + "org.gnome.DisplayManager.Settings", NULL); + g_return_if_fail(gdm_settings_proxy != NULL); + + /* Signal for value changed */ + dbus_g_proxy_add_signal(gdm_settings_proxy, + "ValueChanged", + G_TYPE_STRING, + G_TYPE_STRING, + G_TYPE_STRING, + G_TYPE_INVALID); + dbus_g_proxy_connect_signal(gdm_settings_proxy, + "ValueChanged", + G_CALLBACK(gdm_settings_change), + NULL, + NULL); + + /* Start to get the initial value */ + dbus_g_proxy_begin_call(gdm_settings_proxy, + "GetValue", + gdm_get_autologin, + NULL, + NULL, + G_TYPE_STRING, + gdm_auto_login_string, + G_TYPE_INVALID); + + return; +} + +/* A fun little function to actually lock the screen. If, + that's what you want, let's do it! */ +void +lock_screen (DbusmenuMenuitem * mi, gpointer data) +{ + g_debug("Lock Screen"); + if (!will_lock_screen()) { + g_debug("\tGDM set to autologin, blocking lock"); + return; + } + + DBusGConnection * session_bus = dbus_g_bus_get(DBUS_BUS_SESSION, NULL); + g_return_if_fail(session_bus != NULL); + + DBusGProxy * proxy = dbus_g_proxy_new_for_name_owner(session_bus, + "org.gnome.ScreenSaver", + "/", + "org.gnome.ScreenSaver", + NULL); + g_return_if_fail(proxy != NULL); + + dbus_g_proxy_call_no_reply(proxy, + "Lock", + G_TYPE_INVALID, + G_TYPE_INVALID); + + g_object_unref(proxy); + + return; +} + +gboolean +lock_screen_setup (gpointer data) +{ + if (!g_strcmp0(g_get_user_name(), "guest")) { + is_guest = TRUE; + } + + build_gdm_proxy(); + + return FALSE; +} + |