196 lines
5.9 KiB
C
196 lines
5.9 KiB
C
/*
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* Copyright 1999 Guido van Rooij. All rights reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/conf.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <net/if.h>
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#include <netinet/in_systm.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#if (__FreeBSD_version >= 199511)
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# include <net/route.h>
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# include <netinet/ip_var.h>
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# include <netinet/tcp.h>
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# include <netinet/tcpip.h>
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#endif
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#include <netinet/ipl.h>
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#include <netinet/ip_compat.h>
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#include <netinet/ip_fil.h>
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#include <netinet/ip_state.h>
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#include <netinet/ip_nat.h>
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#include <netinet/ip_auth.h>
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#include <netinet/ip_frag.h>
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#include <netinet/ip_proxy.h>
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static struct cdev *ipf_devs[IPL_LOGMAX + 1];
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SYSCTL_DECL(_net_inet);
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SYSCTL_NODE(_net_inet, OID_AUTO, ipf, CTLFLAG_RW, 0, "IPF");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_flags, CTLFLAG_RW, &fr_flags, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_pass, CTLFLAG_RW, &fr_pass, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_active, CTLFLAG_RD, &fr_active, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpidletimeout, CTLFLAG_RW,
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&fr_tcpidletimeout, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpclosewait, CTLFLAG_RW,
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&fr_tcpclosewait, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcplastack, CTLFLAG_RW,
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&fr_tcplastack, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcptimeout, CTLFLAG_RW,
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&fr_tcptimeout, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpclosed, CTLFLAG_RW,
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&fr_tcpclosed, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcphalfclosed, CTLFLAG_RW,
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&fr_tcphalfclosed, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_udptimeout, CTLFLAG_RW,
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&fr_udptimeout, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_udpacktimeout, CTLFLAG_RW,
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&fr_udpacktimeout, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_icmptimeout, CTLFLAG_RW,
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&fr_icmptimeout, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_icmpacktimeout, CTLFLAG_RW,
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&fr_icmpacktimeout, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_defnatage, CTLFLAG_RW,
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&fr_defnatage, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_ipfrttl, CTLFLAG_RW,
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&fr_ipfrttl, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, ipl_unreach, CTLFLAG_RW,
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&ipl_unreach, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_running, CTLFLAG_RD,
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&fr_running, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_authsize, CTLFLAG_RD,
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&fr_authsize, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_authused, CTLFLAG_RD,
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&fr_authused, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_defaultauthage, CTLFLAG_RW,
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&fr_defaultauthage, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_chksrc, CTLFLAG_RW, &fr_chksrc, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, ippr_ftp_pasvonly, CTLFLAG_RW,
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&ippr_ftp_pasvonly, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_minttl, CTLFLAG_RW, &fr_minttl, 0, "");
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SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_minttllog, CTLFLAG_RW,
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&fr_minttllog, 0, "");
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#define CDEV_MAJOR 79
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static struct cdevsw ipl_cdevsw = {
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.d_version = D_VERSION,
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.d_flags = D_NEEDGIANT,
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.d_open = iplopen,
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.d_close = iplclose,
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.d_read = iplread,
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.d_ioctl = iplioctl,
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.d_name = "ipl",
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.d_maj = CDEV_MAJOR,
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};
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static int
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ipfilter_modevent(module_t mod, int type, void *unused)
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{
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char *c;
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int i, error = 0;
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switch (type) {
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case MOD_LOAD :
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error = iplattach();
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if (error)
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break;
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c = NULL;
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for(i=strlen(IPL_NAME); i>0; i--)
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if (IPL_NAME[i] == '/') {
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c = &IPL_NAME[i+1];
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break;
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}
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if (!c)
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c = IPL_NAME;
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ipf_devs[IPL_LOGIPF] =
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make_dev(&ipl_cdevsw, IPL_LOGIPF, 0, 0, 0600, c);
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c = NULL;
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for(i=strlen(IPL_NAT); i>0; i--)
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if (IPL_NAT[i] == '/') {
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c = &IPL_NAT[i+1];
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break;
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}
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if (!c)
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c = IPL_NAT;
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ipf_devs[IPL_LOGNAT] =
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make_dev(&ipl_cdevsw, IPL_LOGNAT, 0, 0, 0600, c);
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c = NULL;
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for(i=strlen(IPL_STATE); i>0; i--)
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if (IPL_STATE[i] == '/') {
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c = &IPL_STATE[i+1];
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break;
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}
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if (!c)
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c = IPL_STATE;
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ipf_devs[IPL_LOGSTATE] =
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make_dev(&ipl_cdevsw, IPL_LOGSTATE, 0, 0, 0600, c);
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c = NULL;
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for(i=strlen(IPL_AUTH); i>0; i--)
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if (IPL_AUTH[i] == '/') {
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c = &IPL_AUTH[i+1];
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break;
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}
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if (!c)
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c = IPL_AUTH;
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ipf_devs[IPL_LOGAUTH] =
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make_dev(&ipl_cdevsw, IPL_LOGAUTH, 0, 0, 0600, c);
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break;
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case MOD_UNLOAD :
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destroy_dev(ipf_devs[IPL_LOGIPF]);
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destroy_dev(ipf_devs[IPL_LOGNAT]);
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destroy_dev(ipf_devs[IPL_LOGSTATE]);
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destroy_dev(ipf_devs[IPL_LOGAUTH]);
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error = ipldetach();
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break;
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default:
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error = EINVAL;
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break;
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}
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return error;
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}
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static moduledata_t ipfiltermod = {
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IPL_VERSION,
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ipfilter_modevent,
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0
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};
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DECLARE_MODULE(ipfilter, ipfiltermod, SI_SUB_PROTO_DOMAIN, SI_ORDER_ANY);
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