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/*
* Copyright 1999 Guido van Rooij. All rights reserved.
*
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``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 HOLDER 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/conf.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#if (__FreeBSD_version >= 199511)
# include <net/route.h>
# include <netinet/ip_var.h>
# include <netinet/tcp.h>
# include <netinet/tcpip.h>
#endif
#include <netinet/ipl.h>
#include <netinet/ip_compat.h>
#include <netinet/ip_fil.h>
#include <netinet/ip_state.h>
#include <netinet/ip_nat.h>
#include <netinet/ip_auth.h>
#include <netinet/ip_frag.h>
#include <netinet/ip_proxy.h>
static dev_t ipf_devs[IPL_LOGMAX + 1];
SYSCTL_DECL(_net_inet);
SYSCTL_NODE(_net_inet, OID_AUTO, ipf, CTLFLAG_RW, 0, "IPF");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_flags, CTLFLAG_RW, &fr_flags, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_pass, CTLFLAG_RW, &fr_pass, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_active, CTLFLAG_RD, &fr_active, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpidletimeout, CTLFLAG_RW,
&fr_tcpidletimeout, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpclosewait, CTLFLAG_RW,
&fr_tcpclosewait, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcplastack, CTLFLAG_RW,
&fr_tcplastack, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcptimeout, CTLFLAG_RW,
&fr_tcptimeout, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpclosed, CTLFLAG_RW,
&fr_tcpclosed, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcphalfclosed, CTLFLAG_RW,
&fr_tcphalfclosed, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_udptimeout, CTLFLAG_RW,
&fr_udptimeout, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_icmptimeout, CTLFLAG_RW,
&fr_icmptimeout, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_defnatage, CTLFLAG_RW,
&fr_defnatage, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_ipfrttl, CTLFLAG_RW,
&fr_ipfrttl, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, ipl_unreach, CTLFLAG_RW,
&ipl_unreach, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_running, CTLFLAG_RD,
&fr_running, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_authsize, CTLFLAG_RD,
&fr_authsize, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_authused, CTLFLAG_RD,
&fr_authused, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_defaultauthage, CTLFLAG_RW,
&fr_defaultauthage, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_chksrc, CTLFLAG_RW, &fr_chksrc, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, ippr_ftp_pasvonly, CTLFLAG_RW,
&ippr_ftp_pasvonly, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_minttl, CTLFLAG_RW, &fr_minttl, 0, "");
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_minttllog, CTLFLAG_RW,
&fr_minttllog, 0, "");
#define CDEV_MAJOR 79
static struct cdevsw ipl_cdevsw = {
/* open */ iplopen,
/* close */ iplclose,
/* read */ iplread,
/* write */ nowrite,
/* ioctl */ iplioctl,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ "ipl",
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
};
static int
ipfilter_modevent(module_t mod, int type, void *unused)
{
char *c;
int i, error = 0;
switch (type) {
case MOD_LOAD :
error = iplattach();
if (error)
break;
c = NULL;
for(i=strlen(IPL_NAME); i>0; i--)
if (IPL_NAME[i] == '/') {
c = &IPL_NAME[i+1];
break;
}
if (!c)
c = IPL_NAME;
ipf_devs[IPL_LOGIPF] =
make_dev(&ipl_cdevsw, IPL_LOGIPF, 0, 0, 0600, c);
c = NULL;
for(i=strlen(IPL_NAT); i>0; i--)
if (IPL_NAT[i] == '/') {
c = &IPL_NAT[i+1];
break;
}
if (!c)
c = IPL_NAT;
ipf_devs[IPL_LOGNAT] =
make_dev(&ipl_cdevsw, IPL_LOGNAT, 0, 0, 0600, c);
c = NULL;
for(i=strlen(IPL_STATE); i>0; i--)
if (IPL_STATE[i] == '/') {
c = &IPL_STATE[i+1];
break;
}
if (!c)
c = IPL_STATE;
ipf_devs[IPL_LOGSTATE] =
make_dev(&ipl_cdevsw, IPL_LOGSTATE, 0, 0, 0600, c);
c = NULL;
for(i=strlen(IPL_AUTH); i>0; i--)
if (IPL_AUTH[i] == '/') {
c = &IPL_AUTH[i+1];
break;
}
if (!c)
c = IPL_AUTH;
ipf_devs[IPL_LOGAUTH] =
make_dev(&ipl_cdevsw, IPL_LOGAUTH, 0, 0, 0600, c);
break;
case MOD_UNLOAD :
destroy_dev(ipf_devs[IPL_LOGIPF]);
destroy_dev(ipf_devs[IPL_LOGNAT]);
destroy_dev(ipf_devs[IPL_LOGSTATE]);
destroy_dev(ipf_devs[IPL_LOGAUTH]);
error = ipldetach();
break;
default:
error = EINVAL;
break;
}
return error;
}
static moduledata_t ipfiltermod = {
IPL_VERSION,
ipfilter_modevent,
0
};
DECLARE_MODULE(ipfilter, ipfiltermod, SI_SUB_PROTO_DOMAIN, SI_ORDER_ANY);
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