/* strongSwan KLIPS starter
 * Copyright (C) 2001-2002 Mathieu Lafon - Arkoon Network Security
 *
 * 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.  See <http://www.fsf.org/copyleft/gpl.txt>.
 *
 * 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.
 */

#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>

#include <library.h>
#include <utils/debug.h>

#include "files.h"

bool starter_klips_init(void)
{
	struct stat stb;

	if (stat(PROC_KLIPS, &stb) != 0)
	{
		/* ipsec module makes the pf_key proc interface visible */
		if (stat(PROC_MODULES, &stb) == 0)
		{
			ignore_result(system("modprobe -qv ipsec"));
		}

		/* now test again */
		if (stat(PROC_KLIPS, &stb) != 0)
		{
			DBG2(DBG_APP, "kernel appears to lack the KLIPS IPsec stack");
			return FALSE;
		}
	}

	/* load crypto algorithm modules */
	ignore_result(system("modprobe -qv ipsec_aes"));
	ignore_result(system("modprobe -qv ipsec_blowfish"));
	ignore_result(system("modprobe -qv ipsec_sha2"));

	DBG2(DBG_APP, "found KLIPS IPsec stack");
	return TRUE;
}

void starter_klips_cleanup(void)
{
	if (system("type eroute > /dev/null 2>&1") == 0)
	{
		ignore_result(system("spi --clear"));
		ignore_result(system("eroute --clear"));
	}
	else if (system("type setkey > /dev/null 2>&1") == 0)
	{
		ignore_result(system("setkey -F"));
		ignore_result(system("setkey -FP"));
	}
	else
	{
		DBG1(DBG_APP, "WARNING: cannot flush IPsec state/policy database");
	}
}