/*
 *
 *  BlueZ - Bluetooth protocol stack for Linux
 *
 *  Copyright (C) 2004-2008  Marcel Holtmann <marcel@holtmann.org>
 *
 *
 *  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 St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <errno.h>

#include <bluetooth/bluetooth.h>

#include <gdbus.h>

#include "plugin.h"
#include "device.h"
#include "logging.h"
#include "manager.h"

#define IFACE_PREFIX "bnep%d"
#define GN_IFACE  "pan0"
#define NAP_IFACE "pan1"

#define PANU_UUID "00001115-0000-1000-8000-00805f9b34fb"
#define NAP_UUID  "00001116-0000-1000-8000-00805f9b34fb"
#define GN_UUID   "00001117-0000-1000-8000-00805f9b34fb"

#define NETWORK_INTERFACE "org.bluez.Network"

static DBusMessage *network_connect(DBusConnection *conn,
					DBusMessage *msg, void *user_data)
{
	const char *target, *device = "bnep0";

	if (dbus_message_get_args(msg, NULL, DBUS_TYPE_STRING, &target,
						DBUS_TYPE_INVALID) == FALSE)
		return NULL;

	return g_dbus_create_reply(msg, DBUS_TYPE_STRING, &device,
							DBUS_TYPE_INVALID);
}

static DBusMessage *network_disconnect(DBusConnection *conn,
					DBusMessage *msg, void *user_data)
{
	if (dbus_message_get_args(msg, NULL, DBUS_TYPE_INVALID) == FALSE)
		return NULL;

	return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
}

static GDBusMethodTable network_methods[] = {
	{ "Connect",    "s", "s", network_connect    },
	{ "Disconnect", "",  "",  network_disconnect },
	{ }
};

static GDBusSignalTable network_signals[] = {
	{ "Connected",    "ss" },
	{ "Disconnected", "s"  },
	{ }
};

static DBusConnection *conn;

static int network_probe(struct btd_device *device)
{
	DBG("path %s", device->path);

	if (g_dbus_register_interface(conn, device->path, NETWORK_INTERFACE,
					network_methods, network_signals, NULL,
							device, NULL) == FALSE)
		return -1;

	return 0;
}

static void network_remove(struct btd_device *device)
{
	DBG("path %s", device->path);

	g_dbus_unregister_interface(conn, device->path, NETWORK_INTERFACE);
}

static struct btd_device_driver network_driver = {
	.name	= "network",
	.uuids	= BTD_UUIDS(PANU_UUID, NAP_UUID, GN_UUID),
	.probe	= network_probe,
	.remove	= network_remove,
};

static struct network_conf conf = {
	.connection_enabled = TRUE,
	.server_enabled = TRUE,
	.iface_prefix = NULL,
	.panu_script = NULL,
	.gn_script = NULL,
	.nap_script = NULL,
	.gn_iface = NULL,
	.nap_iface = NULL,
	.security = TRUE
};

static void read_config(const char *file)
{
	GKeyFile *keyfile;
	GError *err = NULL;
	char **disabled;

	keyfile = g_key_file_new();

	if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
		error("Parsing %s failed: %s", file, err->message);
		g_error_free(err);
		goto done;
	}

	disabled = g_key_file_get_string_list(keyfile, "General",
						"Disable", NULL, &err);
	if (err) {
		debug("%s: %s", file, err->message);
		g_error_free(err);
		err = NULL;
	} else {
		int i;
		for (i = 0; disabled[i] != NULL; i++) {
			if (g_str_equal(disabled[i], "Connection"))
				conf.connection_enabled = FALSE;
			else if (g_str_equal(disabled[i], "Server"))
				conf.server_enabled = FALSE;
		}
		g_strfreev(disabled);
	}

	conf.security = !g_key_file_get_boolean(keyfile, "General",
						"DisableSecurity", &err);
	if (err) {
		debug("%s: %s", file, err->message);
		g_error_free(err);
		err = NULL;
	}

	conf.panu_script = g_key_file_get_string(keyfile, "PANU Role",
						"Script", &err);
	if (err) {
		debug("%s: %s", file, err->message);
		g_error_free(err);
		err = NULL;
	}

	conf.gn_script = g_key_file_get_string(keyfile, "GN Role",
						"Script", &err);
	if (err) {
		debug("%s: %s", file, err->message);
		g_error_free(err);
		err = NULL;
	}

	conf.nap_script = g_key_file_get_string(keyfile, "NAP Role",
						"Script", &err);
	if (err) {
		debug("%s: %s", file, err->message);
		g_error_free(err);
		err = NULL;
	}

	conf.iface_prefix = g_key_file_get_string(keyfile, "PANU Role",
						"Interface", &err);
	if (err) {
		debug("%s: %s", file, err->message);
		g_error_free(err);
		err = NULL;
	}

	conf.gn_iface = g_key_file_get_string(keyfile, "GN Role",
						"Interface", &err);
	if (err) {
		debug("%s: %s", file, err->message);
		g_error_free(err);
		err = NULL;
	}

	conf.nap_iface = g_key_file_get_string(keyfile, "NAP Role",
						"Interface", &err);
	if (err) {
		debug("%s: %s", file, err->message);
		g_error_free(err);
		err = NULL;
	}

done:
	g_key_file_free(keyfile);

	if (!conf.iface_prefix)
		conf.iface_prefix = g_strdup(IFACE_PREFIX);
	if (!conf.gn_iface)
		conf.gn_iface = g_strdup(GN_IFACE);
	if (!conf.nap_iface)
		conf.nap_iface = g_strdup(NAP_IFACE);

	debug("Config options: InterfacePrefix=%s, PANU_Script=%s, "
		"GN_Script=%s, NAP_Script=%s, GN_Interface=%s, "
		"NAP_Interface=%s, Security=%s",
		conf.iface_prefix, conf.panu_script, conf.gn_script,
		conf.nap_script, conf.gn_iface, conf.nap_iface,
		conf.security ? "true" : "false");
}

static int network_init(void)
{
	conn = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
	if (conn == NULL)
		return -EIO;

	read_config(CONFIGDIR "/network.conf");

	if (network_manager_init(conn, &conf) < 0) {
		dbus_connection_unref(conn);
		return -EIO;
	}

	btd_register_device_driver(&network_driver);

	return 0;
}

static void network_exit(void)
{
	btd_unregister_device_driver(&network_driver);

	network_manager_exit();

	dbus_connection_unref(conn);
}

BLUETOOTH_PLUGIN_DEFINE("network", network_init, network_exit)