xref: /dflybsd-src/sys/net/ipfw/ip_fw2_glue.c (revision 23e83e907b7924545cfa22b1e0aa9f262ea7ff83)

/*
 * Copyright (c) 2008 The DragonFly Project.  All rights reserved.
 *
 * This code is derived from software contributed to The DragonFly Project
 * by Sepherosa Ziehau <sepherosa@gmail.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of The DragonFly Project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific, prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $DragonFly: src/sys/net/ipfw/ip_fw2_glue.c,v 1.3 2008/09/13 10:23:39 sephe Exp $
 */

#include <sys/param.h>
#include <sys/socketvar.h>

#include <net/if.h>
#include <net/netisr2.h>

#include <netinet/in.h>

#include <net/ipfw/ip_fw2.h>

ip_fw_chk_t	*ip_fw_chk_ptr;
ip_fw_dn_io_t	*ip_fw_dn_io_ptr;
ip_fw_ctl_t	*ip_fw_ctl_ptr;
int		ip_fw_loaded;
int		fw_enable = 1;
int		fw_one_pass = 1;

int
ip_fw_sockopt(struct sockopt *sopt)
{
	int error;

	ASSERT_NETISR0;

	/*
	 * Disallow modifications in really-really secure mode, but still allow
	 * the logging counters to be reset.
	 */
	if (sopt->sopt_name == IP_FW_ADD ||
	    (sopt->sopt_dir == SOPT_SET && sopt->sopt_name != IP_FW_RESETLOG)) {
		if (securelevel >= 3)
			return EPERM;
	}
	if (IPFW_LOADED)
		error = ip_fw_ctl_ptr(sopt);
	else
		error = ENOPROTOOPT;
	return (error);
}