lightdm-webkit2-greeter/src/lightdm-webkit2-greeter-ext.c

/*
 * lightdm-webkit2-greeter-ext.c
 *
 * Copyright © 2014-2015 Antergos Developers <dev@antergos.com>
 *
 * Based on code from lightdm-webkit-greeter:
 * Copyright © 2010-2015 Robert Ancell <robert.ancell@canonical.com>
 *
 * This file is part of lightdm-webkit2-greeter.
 *
 * lightdm-webkit2-greeter 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 3 of the License, or
 * (at your option) any later version.
 *
 * lightdm-webkit2-greeter 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.
 *
 * The following additional terms are in effect as per Section 7 of the license:
 *
 * The preservation of all legal notices and author attributions in
 * the material or in the Appropriate Legal Notices displayed
 * by works containing it is required.
 *
 * You should have received a copy of the GNU General Public License
 * along with lightdm-webkit2-greeter; If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include <stdlib.h>
#include <config.h>
#include <gtk/gtk.h>
#include <glib/gi18n.h>

#include <webkit2/webkit-web-extension.h>
#include <webkitdom/WebKitDOMCustom.h>

#include <JavaScriptCore/JavaScript.h>
#include <lightdm.h>

G_MODULE_EXPORT void webkit_web_extension_initialize(WebKitWebExtension *extension);

guint64 page_id = -1;

static JSClassRef
	lightdm_greeter_class,
	gettext_class,
	lightdm_user_class,
	lightdm_language_class,
	lightdm_layout_class,
	lightdm_session_class;


static JSValueRef
get_user_name_cb(JSContextRef context,
				 JSObjectRef thisObject,
				 JSStringRef propertyName,
				 JSValueRef *exception) {
	LightDMUser *user = JSObjectGetPrivate(thisObject);
	JSStringRef string;

	string = JSStringCreateWithUTF8CString(lightdm_user_get_name(user));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_user_real_name_cb(JSContextRef context,
					  JSObjectRef thisObject,
					  JSStringRef propertyName,
					  JSValueRef *exception) {
	LightDMUser *user = JSObjectGetPrivate(thisObject);
	JSStringRef string;

	string = JSStringCreateWithUTF8CString(lightdm_user_get_real_name(user));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_user_display_name_cb(JSContextRef context,
						 JSObjectRef thisObject,
						 JSStringRef propertyName,
						 JSValueRef *exception) {
	LightDMUser *user = JSObjectGetPrivate(thisObject);
	JSStringRef string;

	string = JSStringCreateWithUTF8CString(lightdm_user_get_display_name(user));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_user_image_cb(JSContextRef context,
				  JSObjectRef thisObject,
				  JSStringRef propertyName,
				  JSValueRef *exception) {
	LightDMUser *user = JSObjectGetPrivate(thisObject);
	JSStringRef string;

	string = JSStringCreateWithUTF8CString(lightdm_user_get_image(user));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_user_language_cb(JSContextRef context,
					 JSObjectRef thisObject,
					 JSStringRef propertyName,
					 JSValueRef *exception) {
	LightDMUser *user     = JSObjectGetPrivate(thisObject);
	const gchar *language = lightdm_user_get_language(user);
	JSStringRef string;

	if (!language) {
		return JSValueMakeNull(context);
	}

	string = JSStringCreateWithUTF8CString(language);
	return JSValueMakeString(context, string);
}


static JSValueRef
get_user_layout_cb(JSContextRef context,
				   JSObjectRef thisObject,
				   JSStringRef propertyName,
				   JSValueRef *exception) {
	LightDMUser *user   = JSObjectGetPrivate(thisObject);
	const gchar *layout = lightdm_user_get_layout(user);
	JSStringRef string;

	if (!layout) {
		return JSValueMakeNull(context);
	}

	string = JSStringCreateWithUTF8CString(layout);
	return JSValueMakeString(context, string);
}


static JSValueRef
get_user_session_cb(JSContextRef context,
					JSObjectRef thisObject,
					JSStringRef propertyName,
					JSValueRef *exception) {
	LightDMUser *user    = JSObjectGetPrivate(thisObject);
	const gchar *session = lightdm_user_get_session(user);
	JSStringRef string;

	if (!session) {
		return JSValueMakeNull(context);
	}

	string = JSStringCreateWithUTF8CString(session);
	return JSValueMakeString(context, string);
}


static JSValueRef
get_user_logged_in_cb(JSContextRef context,
					  JSObjectRef thisObject,
					  JSStringRef propertyName,
					  JSValueRef *exception) {
	LightDMUser *user = JSObjectGetPrivate(thisObject);
	return JSValueMakeBoolean(context, lightdm_user_get_logged_in(user));
}


static JSValueRef
get_language_code_cb(JSContextRef context,
					 JSObjectRef thisObject,
					 JSStringRef propertyName,
					 JSValueRef *exception) {
	LightDMLanguage *language = JSObjectGetPrivate(thisObject);
	JSStringRef     string;

	string = JSStringCreateWithUTF8CString(lightdm_language_get_code(language));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_language_name_cb(JSContextRef context,
					 JSObjectRef thisObject,
					 JSStringRef propertyName,
					 JSValueRef *exception) {
	LightDMLanguage *language = JSObjectGetPrivate(thisObject);
	JSStringRef     string;

	string = JSStringCreateWithUTF8CString(lightdm_language_get_name(language));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_language_territory_cb(JSContextRef context,
						  JSObjectRef thisObject,
						  JSStringRef propertyName,
						  JSValueRef *exception) {
	LightDMLanguage *language = JSObjectGetPrivate(thisObject);
	JSStringRef     string;

	string = JSStringCreateWithUTF8CString(lightdm_language_get_territory(language));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_layout_name_cb(JSContextRef context,
				   JSObjectRef thisObject,
				   JSStringRef propertyName,
				   JSValueRef *exception) {
	LightDMLayout *layout = JSObjectGetPrivate(thisObject);
	JSStringRef   string;

	string = JSStringCreateWithUTF8CString(lightdm_layout_get_name(layout));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_layout_short_description_cb(JSContextRef context,
								JSObjectRef thisObject,
								JSStringRef propertyName,
								JSValueRef *exception) {
	LightDMLayout *layout = JSObjectGetPrivate(thisObject);
	JSStringRef   string;

	string = JSStringCreateWithUTF8CString(lightdm_layout_get_short_description(layout));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_layout_description_cb(JSContextRef context,
						  JSObjectRef thisObject,
						  JSStringRef propertyName,
						  JSValueRef *exception) {
	LightDMLayout *layout = JSObjectGetPrivate(thisObject);
	JSStringRef   string;

	string = JSStringCreateWithUTF8CString(lightdm_layout_get_description(layout));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_session_key_cb(JSContextRef context,
				   JSObjectRef thisObject,
				   JSStringRef propertyName,
				   JSValueRef *exception) {
	LightDMSession *session = JSObjectGetPrivate(thisObject);
	JSStringRef    string;

	string = JSStringCreateWithUTF8CString(lightdm_session_get_key(session));
	return JSValueMakeString(context, string);

}


static JSValueRef
get_session_name_cb(JSContextRef context,
					JSObjectRef thisObject,
					JSStringRef propertyName,
					JSValueRef *exception) {
	LightDMSession *session = JSObjectGetPrivate(thisObject);
	JSStringRef    string;

	string = JSStringCreateWithUTF8CString(lightdm_session_get_name(session));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_session_comment_cb(JSContextRef context,
					   JSObjectRef thisObject,
					   JSStringRef propertyName,
					   JSValueRef *exception) {
	LightDMSession *session = JSObjectGetPrivate(thisObject);
	JSStringRef    string;

	string = JSStringCreateWithUTF8CString(lightdm_session_get_comment(session));
	return JSValueMakeString(context, string);
}


static JSValueRef
get_hostname_cb(JSContextRef context,
				JSObjectRef thisObject,
				JSStringRef propertyName,
				JSValueRef *exception) {
	JSStringRef string;

	string = JSStringCreateWithUTF8CString(lightdm_get_hostname());

	return JSValueMakeString(context, string);
}


static JSValueRef
get_num_users_cb(JSContextRef context,
				 JSObjectRef thisObject,
				 JSStringRef propertyName,
				 JSValueRef *exception) {
	gint num_users;

	num_users = g_list_length(lightdm_user_list_get_users(lightdm_user_list_get_instance()));
	return JSValueMakeNumber(context, num_users);
}


static JSValueRef
get_users_cb(JSContextRef context,
			 JSObjectRef thisObject,
			 JSStringRef propertyName,
			 JSValueRef *exception) {
	JSObjectRef array;
	const GList *users, *link;
	guint       i, n_users = 0;
	JSValueRef  *args;

	users   = lightdm_user_list_get_users(lightdm_user_list_get_instance());
	n_users = g_list_length((GList *) users);
	args    = g_malloc(sizeof(JSValueRef) * ( n_users + 1 ));
	for (i  = 0, link = users; link; i++, link = link->next) {
		LightDMUser *user = link->data;
		g_object_ref(user);
		args[i] = JSObjectMake(context, lightdm_user_class, user);
	}

	array = JSObjectMakeArray(context, n_users, args, NULL);
	g_free(args);
	return array;
}


static JSValueRef
get_languages_cb(JSContextRef context,
				 JSObjectRef thisObject,
				 JSStringRef propertyName,
				 JSValueRef *exception) {
	JSObjectRef array;
	const GList *languages, *link;
	guint       i, n_languages = 0;
	JSValueRef  *args;

	languages   = lightdm_get_languages();
	n_languages = g_list_length((GList *) languages);
	args        = g_malloc(sizeof(JSValueRef) * ( n_languages + 1 ));
	for (i      = 0, link = languages; link; i++, link = link->next) {
		LightDMLanguage *language = link->data;
		g_object_ref(language);
		args[i] = JSObjectMake(context, lightdm_language_class, language);
	}

	array = JSObjectMakeArray(context, n_languages, args, NULL);
	g_free(args);
	return array;
}


static JSValueRef
get_default_language_cb(JSContextRef context,
						JSObjectRef thisObject,
						JSStringRef propertyName,
						JSValueRef *exception) {
	JSStringRef string;

	string = JSStringCreateWithUTF8CString(lightdm_language_get_name((LightDMLanguage *) lightdm_get_language()));

	return JSValueMakeString(context, string);
}


static JSValueRef
get_default_layout_cb(JSContextRef context,
					  JSObjectRef thisObject,
					  JSStringRef propertyName,
					  JSValueRef *exception) {
	JSStringRef string;

	string = JSStringCreateWithUTF8CString(lightdm_layout_get_name(lightdm_get_layout()));

	return JSValueMakeString(context, string);
}


static JSValueRef
get_layouts_cb(JSContextRef context,
			   JSObjectRef thisObject,
			   JSStringRef propertyName,
			   JSValueRef *exception) {

	JSObjectRef array;
	const GList *layouts, *link;
	guint       i, n_layouts = 0;
	JSValueRef  *args;

	layouts   = lightdm_get_layouts();
	n_layouts = g_list_length((GList *) layouts);
	args      = g_malloc(sizeof(JSValueRef) * ( n_layouts + 1 ));
	for (i    = 0, link = layouts; link; i++, link = link->next) {
		LightDMLayout *layout = link->data;
		g_object_ref(layout);
		args[i] = JSObjectMake(context, lightdm_layout_class, layout);
	}

	array = JSObjectMakeArray(context, n_layouts, args, NULL);
	g_free(args);
	return array;
}


static JSValueRef
get_layout_cb(JSContextRef context,
			  JSObjectRef thisObject,
			  JSStringRef propertyName,
			  JSValueRef *exception) {

	JSStringRef string;

	string = JSStringCreateWithUTF8CString(lightdm_layout_get_name(lightdm_get_layout()));

	return JSValueMakeString(context, string);
}


static bool
set_layout_cb(JSContextRef context,
			  JSObjectRef thisObject,
			  JSStringRef propertyName,
			  JSValueRef value,
			  JSValueRef *exception) {
	JSStringRef layout_arg;
	char        layout[1024];

	// FIXME: Throw exception
	if (JSValueGetType(context, value) != kJSTypeString) {
		return false;
	}

	layout_arg = JSValueToStringCopy(context, value, NULL);
	JSStringGetUTF8CString(layout_arg, layout, 1024);
	JSStringRelease(layout_arg);

	//lightdm_set_layout (layout);

	return true;
}


static JSValueRef
get_sessions_cb(JSContextRef context,
				JSObjectRef thisObject,
				JSStringRef propertyName,
				JSValueRef *exception) {
	JSObjectRef array;
	const GList *sessions, *link;
	guint       i, n_sessions = 0;
	JSValueRef  *args;

	sessions   = lightdm_get_sessions();
	n_sessions = g_list_length((GList *) sessions);
	args       = g_malloc(sizeof(JSValueRef) * ( n_sessions + 1 ));
	for (i     = 0, link = sessions; link; i++, link = link->next) {
		LightDMSession *session = link->data;
		g_object_ref(session);
		args[i] = JSObjectMake(context, lightdm_session_class, session);
	}

	array = JSObjectMakeArray(context, n_sessions, args, NULL);
	g_free(args);
	return array;
}


static JSValueRef
get_default_session_cb(JSContextRef context,
					   JSObjectRef thisObject,
					   JSStringRef propertyName,
					   JSValueRef *exception) {
	LightDMGreeter *greeter = JSObjectGetPrivate(thisObject);
	JSStringRef    string;

	string = JSStringCreateWithUTF8CString(lightdm_greeter_get_default_session_hint(greeter));

	return JSValueMakeString(context, string);
}


static JSValueRef
get_timed_login_user_cb(JSContextRef context,
						JSObjectRef thisObject,
						JSStringRef propertyName,
						JSValueRef *exception) {
	LightDMGreeter *greeter = JSObjectGetPrivate(thisObject);
	JSStringRef    string;

	string = JSStringCreateWithUTF8CString(lightdm_greeter_get_autologin_user_hint(greeter));

	return JSValueMakeString(context, string);
}


static JSValueRef
get_lock_hint_cb(JSContextRef context,
				 JSObjectRef thisObject,
				 JSStringRef propertyName,
				 JSValueRef *exception) {
	LightDMGreeter *greeter = JSObjectGetPrivate(thisObject);

	return JSValueMakeBoolean(lightdm_greeter_get_lock_hint(greeter));
}


static JSValueRef
get_timed_login_delay_cb(JSContextRef context,
						 JSObjectRef thisObject,
						 JSStringRef propertyName,
						 JSValueRef *exception) {
	LightDMGreeter *greeter = JSObjectGetPrivate(thisObject);
	gint           delay;

	delay = lightdm_greeter_get_autologin_timeout_hint(greeter);
	return JSValueMakeNumber(context, delay);
}


static JSValueRef
cancel_timed_login_cb(JSContextRef context,
					  JSObjectRef function,
					  JSObjectRef thisObject,
					  size_t argumentCount,
					  const JSValueRef arguments[],
					  JSValueRef *exception) {
	LightDMGreeter *greeter = JSObjectGetPrivate(thisObject);

	// FIXME: Throw exception
	if (argumentCount != 0) {
		return JSValueMakeNull(context);
	}

	lightdm_greeter_cancel_autologin(greeter);
	return JSValueMakeNull(context);
}


static JSValueRef
start_authentication_cb(JSContextRef context,
						JSObjectRef function,
						JSObjectRef thisObject,
						size_t argumentCount,
						const JSValueRef arguments[],
						JSValueRef *exception) {
	LightDMGreeter *greeter = JSObjectGetPrivate(thisObject);
	JSStringRef    name_arg;
	char           name[1024];

	// FIXME: Throw exception
	if (!( argumentCount == 1 && JSValueGetType(context, arguments[0]) == kJSTypeString )) {
		return JSValueMakeNull(context);
	}

	name_arg = JSValueToStringCopy(context, arguments[0], NULL);
	JSStringGetUTF8CString(name_arg, name, 1024);
	JSStringRelease(name_arg);

	lightdm_greeter_authenticate(greeter, name);
	return JSValueMakeNull(context);
}


static JSValueRef
provide_secret_cb(JSContextRef context,
				  JSObjectRef function,
				  JSObjectRef thisObject,
				  size_t argumentCount,
				  const JSValueRef arguments[],
				  JSValueRef *exception) {
	LightDMGreeter *greeter = JSObjectGetPrivate(thisObject);
	JSStringRef    secret_arg;
	char           secret[1024];

	// FIXME: Throw exception
	if (!( argumentCount == 1 && JSValueGetType(context, arguments[0]) == kJSTypeString )) {
		return JSValueMakeNull(context);
	}

	secret_arg = JSValueToStringCopy(context, arguments[0], NULL);
	JSStringGetUTF8CString(secret_arg, secret, 1024);
	JSStringRelease(secret_arg);

	lightdm_greeter_respond(greeter, secret);

	return JSValueMakeNull(context);
}


static JSValueRef
cancel_authentication_cb(JSContextRef context,
						 JSObjectRef function,
						 JSObjectRef thisObject,
						 size_t argumentCount,
						 const JSValueRef arguments[],
						 JSValueRef *exception) {
	LightDMGreeter *greeter = JSObjectGetPrivate(thisObject);

	// FIXME: Throw exception
	if (argumentCount != 0) {
		return JSValueMakeNull(context);
	}

	lightdm_greeter_cancel_authentication(greeter);
	return JSValueMakeNull(context);
}


static JSValueRef
get_authentication_user_cb(JSContextRef context,
						   JSObjectRef thisObject,
						   JSStringRef propertyName,
						   JSValueRef *exception) {
	LightDMGreeter *greeter = JSObjectGetPrivate(thisObject);
	return JSValueMakeString(context, JSStringCreateWithUTF8CString(lightdm_greeter_get_authentication_user(greeter)));
}


static JSValueRef
get_is_authenticated_cb(JSContextRef context,
						JSObjectRef thisObject,
						JSStringRef propertyName,
						JSValueRef *exception) {
	LightDMGreeter *greeter = JSObjectGetPrivate(thisObject);
	return JSValueMakeBoolean(context, lightdm_greeter_get_is_authenticated(greeter));
}


static JSValueRef
get_can_suspend_cb(JSContextRef context,
				   JSObjectRef thisObject,
				   JSStringRef propertyName,
				   JSValueRef *exception) {
	return JSValueMakeBoolean(context, lightdm_get_can_suspend());
}


static JSValueRef
suspend_cb(JSContextRef context,
		   JSObjectRef function,
		   JSObjectRef thisObject,
		   size_t argumentCount,
		   const JSValueRef arguments[],
		   JSValueRef *exception) {
	// FIXME: Throw exception
	if (argumentCount != 0) {
		return JSValueMakeNull(context);
	}

	lightdm_suspend(NULL);
	return JSValueMakeNull(context);
}


static JSValueRef
get_can_hibernate_cb(JSContextRef context,
					 JSObjectRef thisObject,
					 JSStringRef propertyName,
					 JSValueRef *exception) {
	return JSValueMakeBoolean(context, lightdm_get_can_hibernate());
}


static JSValueRef
hibernate_cb(JSContextRef context,
			 JSObjectRef function,
			 JSObjectRef thisObject,
			 size_t argumentCount,
			 const JSValueRef arguments[],
			 JSValueRef *exception) {
	// FIXME: Throw exception
	if (argumentCount != 0) {
		return JSValueMakeNull(context);
	}

	lightdm_hibernate(NULL);
	return JSValueMakeNull(context);
}


static JSValueRef
get_can_restart_cb(JSContextRef context,
				   JSObjectRef thisObject,
				   JSStringRef propertyName,
				   JSValueRef *exception) {
	return JSValueMakeBoolean(context, lightdm_get_can_restart());
}


static JSValueRef
restart_cb(JSContextRef context,
		   JSObjectRef function,
		   JSObjectRef thisObject,
		   size_t argumentCount,
		   const JSValueRef arguments[],
		   JSValueRef *exception) {
	// FIXME: Throw exception
	if (argumentCount != 0) {
		return JSValueMakeNull(context);
	}

	lightdm_restart(NULL);
	return JSValueMakeNull(context);
}


static JSValueRef
get_can_shutdown_cb(JSContextRef context,
					JSObjectRef thisObject,
					JSStringRef propertyName,
					JSValueRef *exception) {
	return JSValueMakeBoolean(context, lightdm_get_can_shutdown());
}


static JSValueRef
shutdown_cb(JSContextRef context,
			JSObjectRef function,
			JSObjectRef thisObject,
			size_t argumentCount,
			const JSValueRef arguments[],
			JSValueRef *exception) {
	// FIXME: Throw exception
	if (argumentCount != 0) {
		return JSValueMakeNull(context);
	}

	lightdm_shutdown(NULL);
	return JSValueMakeNull(context);
}


static JSValueRef
login_cb(JSContextRef context,
		 JSObjectRef function,
		 JSObjectRef thisObject,
		 size_t argumentCount,
		 const JSValueRef arguments[],
		 JSValueRef *exception) {
	LightDMGreeter *greeter                 = JSObjectGetPrivate(thisObject);
	JSStringRef    arg;
	char           username[1024], *session = NULL;

	// FIXME: Throw exception

	arg = JSValueToStringCopy(context, arguments[0], NULL);
	JSStringGetUTF8CString(arg, username, 1024);
	JSStringRelease(arg);

	if (argumentCount > 1) {
		arg     = JSValueToStringCopy(context, arguments[1], NULL);
		session = g_malloc(sizeof(char) * 1024);
		JSStringGetUTF8CString(arg, session, 1024);
		JSStringRelease(arg);
	}

	lightdm_greeter_start_session_sync(greeter, session, NULL);

	g_free(session);

	return JSValueMakeNull(context);
}


static JSValueRef
set_language_cb(JSContextRef context,
				JSObjectRef function,
				JSObjectRef thisObject,
				size_t argumentCount,
				const JSValueRef arguments[],
				JSValueRef *exception) {
	LightDMGreeter *greeter = JSObjectGetPrivate(thisObject);
	JSStringRef    arg;
	char           language[1024];

	// FIXME: Throw exception

	arg = JSValueToStringCopy(context, arguments[0], NULL);
	JSStringGetUTF8CString(arg, language, 1024);
	JSStringRelease(arg);

	lightdm_greeter_set_language(greeter, language);

	return JSValueMakeNull(context);
}


static JSValueRef
gettext_cb(JSContextRef context,
		   JSObjectRef function,
		   JSObjectRef thisObject,
		   size_t argumentCount,
		   const JSValueRef arguments[],
		   JSValueRef *exception) {
	JSStringRef string_arg, result;
	char        string[1024];

	// FIXME: Throw exception
	if (argumentCount != 1) {
		return JSValueMakeNull(context);
	}

	string_arg = JSValueToStringCopy(context, arguments[0], NULL);
	JSStringGetUTF8CString(string_arg, string, 1024);
	JSStringRelease(string_arg);

	result = JSStringCreateWithUTF8CString(gettext(string));
	return JSValueMakeString(context, result);
}


static JSValueRef
ngettext_cb(JSContextRef context,
			JSObjectRef function,
			JSObjectRef thisObject,
			size_t argumentCount,
			const JSValueRef arguments[],
			JSValueRef *exception) {
	JSStringRef  string_arg, plural_string_arg, result;
	char         string[1024], plural_string[1024];
	unsigned int n;

	// FIXME: Throw exception
	if (argumentCount != 3) {
		return JSValueMakeNull(context);
	}

	string_arg = JSValueToStringCopy(context, arguments[0], NULL);
	JSStringGetUTF8CString(string_arg, string, 1024);
	JSStringRelease(string_arg);

	plural_string_arg = JSValueToStringCopy(context, arguments[1], NULL);
	JSStringGetUTF8CString(plural_string_arg, string, 1024);
	JSStringRelease(plural_string_arg);

	n = JSValueToNumber(context, arguments[2], NULL);

	result = JSStringCreateWithUTF8CString(ngettext(string, plural_string, n));
	return JSValueMakeString(context, result);
}


static const JSStaticValue lightdm_user_values[] = {
	{"name", get_user_name_cb, NULL, kJSPropertyAttributeReadOnly},
	{"real_name", get_user_real_name_cb, NULL, kJSPropertyAttributeReadOnly},
	{"display_name", get_user_display_name_cb, NULL, kJSPropertyAttributeReadOnly},
	{"image", get_user_image_cb, NULL, kJSPropertyAttributeReadOnly},
	{"language", get_user_language_cb, NULL, kJSPropertyAttributeReadOnly},
	{"layout", get_user_layout_cb, NULL, kJSPropertyAttributeReadOnly},
	{"session", get_user_session_cb, NULL, kJSPropertyAttributeReadOnly},
	{"logged_in", get_user_logged_in_cb, NULL, kJSPropertyAttributeReadOnly},
	{NULL, NULL, NULL, 0}};

static const JSStaticValue lightdm_language_values[] = {
	{"code", get_language_code_cb, NULL, kJSPropertyAttributeReadOnly},
	{"name", get_language_name_cb, NULL, kJSPropertyAttributeReadOnly},
	{"territory", get_language_territory_cb, NULL, kJSPropertyAttributeReadOnly},
	{NULL, NULL, NULL, 0}};

static const JSStaticValue lightdm_layout_values[] = {
	{"name", get_layout_name_cb, NULL, kJSPropertyAttributeReadOnly},
	{"short_description", get_layout_short_description_cb, NULL, kJSPropertyAttributeReadOnly},
	{"description", get_layout_description_cb, NULL, kJSPropertyAttributeReadOnly},
	{NULL, NULL, NULL, 0}};

static const JSStaticValue lightdm_session_values[] = {
	{"key", get_session_key_cb, NULL, kJSPropertyAttributeReadOnly},
	{"name", get_session_name_cb, NULL, kJSPropertyAttributeReadOnly},
	{"comment", get_session_comment_cb, NULL, kJSPropertyAttributeReadOnly},
	{NULL, NULL, NULL, 0}};

static const JSStaticValue lightdm_greeter_values[] = {
	{"hostname", get_hostname_cb, NULL, kJSPropertyAttributeReadOnly},
	{"users", get_users_cb, NULL, kJSPropertyAttributeReadOnly},
	{"default_language", get_default_language_cb, NULL, kJSPropertyAttributeReadOnly},
	{"languages", get_languages_cb, NULL, kJSPropertyAttributeReadOnly},
	{"default_layout", get_default_layout_cb, NULL, kJSPropertyAttributeReadOnly},
	{"layouts", get_layouts_cb, NULL, kJSPropertyAttributeReadOnly},
	{"layout", get_layout_cb, set_layout_cb, kJSPropertyAttributeReadOnly},
	{"sessions", get_sessions_cb, NULL, kJSPropertyAttributeReadOnly},
	{"num_users", get_num_users_cb, NULL, kJSPropertyAttributeReadOnly},
	{"default_session", get_default_session_cb, NULL, kJSPropertyAttributeNone},
	{"timed_login_user", get_timed_login_user_cb, NULL, kJSPropertyAttributeReadOnly},
	{"timed_login_delay", get_timed_login_delay_cb, NULL, kJSPropertyAttributeReadOnly},
	{"authentication_user", get_authentication_user_cb, NULL, kJSPropertyAttributeReadOnly},
	{"is_authenticated", get_is_authenticated_cb, NULL, kJSPropertyAttributeReadOnly},
	{"can_suspend", get_can_suspend_cb, NULL, kJSPropertyAttributeReadOnly},
	{"can_hibernate", get_can_hibernate_cb, NULL, kJSPropertyAttributeReadOnly},
	{"can_restart", get_can_restart_cb, NULL, kJSPropertyAttributeReadOnly},
	{"can_shutdown", get_can_shutdown_cb, NULL, kJSPropertyAttributeReadOnly},
	{"lock_hint", get_lock_hint_cb, NULL, kJSPropertyAttributeReadOnly},
	{NULL, NULL, NULL, 0}};

static const JSStaticFunction lightdm_greeter_functions[] = {
	{"cancel_timed_login", cancel_timed_login_cb, kJSPropertyAttributeReadOnly},
	{"start_authentication", start_authentication_cb, kJSPropertyAttributeReadOnly},
	{"provide_secret", provide_secret_cb, kJSPropertyAttributeReadOnly},
	{"cancel_authentication", cancel_authentication_cb, kJSPropertyAttributeReadOnly},
	{"suspend", suspend_cb, kJSPropertyAttributeReadOnly},
	{"hibernate", hibernate_cb, kJSPropertyAttributeReadOnly},
	{"restart", restart_cb, kJSPropertyAttributeReadOnly},
	{"shutdown", shutdown_cb, kJSPropertyAttributeReadOnly},
	{"set_language", set_language_cb, kJSPropertyAttributeReadOnly},
	{"login", login_cb, kJSPropertyAttributeReadOnly}, {NULL, NULL, 0}};

static const JSStaticFunction gettext_functions[] = {
	{"gettext", gettext_cb, kJSPropertyAttributeReadOnly},
	{"ngettext", ngettext_cb, kJSPropertyAttributeReadOnly},
	{NULL, NULL, 0}};

static const JSClassDefinition lightdm_user_definition = {
	0,                     /* Version       */
	kJSClassAttributeNone, /* Attributes    */
	"LightDMUser",         /* Class name    */
	NULL,                  /* Parent class  */
	lightdm_user_values,   /* Static values */
};

static const JSClassDefinition lightdm_language_definition = {
	0,                       /* Version       */
	kJSClassAttributeNone,   /* Attributes    */
	"LightDMLanguage",       /* Class name    */
	NULL,                    /* Parent class  */
	lightdm_language_values, /* Static values */
};

static const JSClassDefinition lightdm_layout_definition = {
	0,                     /* Version       */
	kJSClassAttributeNone, /* Attributes    */
	"LightDMLayout",       /* Class name    */
	NULL,                  /* Parent class  */
	lightdm_layout_values, /* Static values */
};

static const JSClassDefinition lightdm_session_definition = {
	0,                      /* Version       */
	kJSClassAttributeNone,  /* Attributes    */
	"LightDMSession",       /* Class name    */
	NULL,                   /* Parent class  */
	lightdm_session_values, /* Static values */
};

static const JSClassDefinition lightdm_greeter_definition = {
	0,                         /* Version          */
	kJSClassAttributeNone,     /* Attributes       */
	"LightDMGreeter",          /* Class name       */
	NULL,                      /* Parent class     */
	lightdm_greeter_values,    /* Static values    */
	lightdm_greeter_functions, /* Static functions */
};

static const JSClassDefinition gettext_definition = {
	0,                     /* Version          */
	kJSClassAttributeNone, /* Attributes       */
	"GettextClass",        /* Class name       */
	NULL,                  /* Parent class     */
	NULL,                  /* Static values    */
	gettext_functions,     /* Static functions */
};


static void
web_page_created_callback(WebKitWebExtension *extension, WebKitWebPage *web_page, gpointer user_data) {
	/*@formatter:off*/
	g_print("Page %" G_GUINT64_FORMAT "created for %s\n",
			webkit_web_page_get_id(web_page),
			webkit_web_page_get_uri(web_page)
	);
	/*@formatter:on*/
}


static void
window_object_cleared_callback(WebKitScriptWorld *world,
							   WebKitWebPage *web_page,
							   WebKitFrame *frame,
							   LightDMGreeter *greeter) {
	JSObjectRef        gettext_object, lightdm_greeter_object;
	JSGlobalContextRef jsContext;
	JSObjectRef        globalObject;
	WebKitDOMDocument  *dom_document;
	WebkitDOMDOMWindow *dom_window;

	page_id = webkit_web_page_get_id(web_page);

	jsContext    = webkit_frame_get_javascript_context_for_script_world(frame, world);
	globalObject = JSContextGetGlobalObject(jsContext);

	gettext_class          = JSClassCreate(&gettext_definition);
	lightdm_greeter_class  = JSClassCreate(&lightdm_greeter_definition);
	lightdm_user_class     = JSClassCreate(&lightdm_user_definition);
	lightdm_language_class = JSClassCreate(&lightdm_language_definition);
	lightdm_layout_class   = JSClassCreate(&lightdm_layout_definition);
	lightdm_session_class  = JSClassCreate(&lightdm_session_definition);

	gettext_object = JSObjectMake(jsContext, gettext_class, NULL);
	JSObjectSetProperty(jsContext,
						globalObject,
						JSStringCreateWithUTF8CString("gettext"),
						gettext_object,
						kJSPropertyAttributeNone,
						NULL);

	lightdm_greeter_object = JSObjectMake(jsContext, lightdm_greeter_class, greeter);
	JSObjectSetProperty(jsContext,
						globalObject,
						JSStringCreateWithUTF8CString("lightdm"),
						lightdm_greeter_object,
						kJSPropertyAttributeNone,
						NULL);

	// If lightdm was started as a lock-screen, send signal to our UI process.
	if (lightdm_greeter_get_lock_hint(greeter)) {
		dom_document = webkit_web_page_get_dom_document(web_page);
		dom_window   = webkit_dom_document_get_default_view(dom_document);

		webkit_dom_dom_window_webkit_message_handlers_post_message(dom_window, 'Greeter', 'lock_hint_cb');
	}

}


static void
show_prompt_cb(LightDMGreeter *greeter,
			   const gchar *text,
			   LightDMPromptType type,
			   WebKitWebExtension *extension) {

	WebKitWebPage      *web_page;
	WebKitFrame        *web_frame;
	JSGlobalContextRef jsContext;
	JSStringRef        command;
	gchar              *string;

	g_debug("Show prompt %s", text);

	web_page = webkit_web_extension_get_page(extension, page_id);

	if (web_page != NULL) {
		web_frame = webkit_web_page_get_main_frame(web_page);

		jsContext = webkit_frame_get_javascript_global_context(web_frame);

		string  = g_strdup_printf("show_prompt('%s')", text);
		command = JSStringCreateWithUTF8CString(string);

		JSEvaluateScript(jsContext, command, NULL, NULL, 0, NULL);

		g_free(string);
	}
}


static void
show_message_cb(LightDMGreeter *greeter,
				const gchar *text,
				LightDMMessageType type,
				WebKitWebExtension *extension) {

	WebKitWebPage      *web_page;
	WebKitFrame        *web_frame;
	JSGlobalContextRef jsContext;
	JSStringRef        command;
	gchar              *string;

	web_page = webkit_web_extension_get_page(extension, page_id);
	if (web_page != NULL) {
		web_frame = webkit_web_page_get_main_frame(web_page);

		jsContext = webkit_frame_get_javascript_global_context(web_frame);

		string  = g_strdup_printf("show_message('%s')", text);
		command = JSStringCreateWithUTF8CString(string);

		JSEvaluateScript(jsContext, command, NULL, NULL, 0, NULL);

		g_free(string);
	}
}


static void
authentication_complete_cb(LightDMGreeter *greeter, WebKitWebExtension *extension) {

	WebKitWebPage      *web_page;
	WebKitFrame        *web_frame;
	JSGlobalContextRef jsContext;
	JSStringRef        command;

	web_page = webkit_web_extension_get_page(extension, page_id);

	if (web_page != NULL) {
		web_frame = webkit_web_page_get_main_frame(web_page);

		jsContext = webkit_frame_get_javascript_global_context(web_frame);

		command = JSStringCreateWithUTF8CString("authentication_complete()");

		JSEvaluateScript(jsContext, command, NULL, NULL, 0, NULL);
	}
}


G_MODULE_EXPORT void
webkit_web_extension_initialize(WebKitWebExtension *extension) {
	LightDMGreeter *greeter = lightdm_greeter_new();

	g_signal_connect(G_OBJECT(greeter), "authentication-complete", G_CALLBACK(authentication_complete_cb), extension);
	g_signal_connect(G_OBJECT(greeter), "show-prompt", G_CALLBACK(show_prompt_cb), extension);
	g_signal_connect(G_OBJECT(greeter), "show-message", G_CALLBACK(show_message_cb), extension);

	g_signal_connect(webkit_script_world_get_default(),
					 "window-object-cleared",
					 G_CALLBACK(window_object_cleared_callback),
					 greeter);

	lightdm_greeter_connect_sync(greeter, NULL);
}