2001 lines
59 KiB
C
2001 lines
59 KiB
C
/* $NetBSD: ip_fil.h,v 1.8 2019/11/11 19:33:43 chs Exp $ */
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/*
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* Copyright (C) 2012 by Darren Reed.
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*
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* See the IPFILTER.LICENCE file for details on licencing.
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*
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* @(#)ip_fil.h 1.35 6/5/96
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* Id: ip_fil.h,v 1.1.1.2 2012/07/22 13:45:13 darrenr Exp
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*/
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#ifndef _NETINET_IP_FIL_H_
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#define _NETINET_IP_FIL_H_
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#include "netinet/ip_compat.h"
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#include "netinet/ipf_rb.h"
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#if NETBSD_GE_REV(104040000)
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# include <sys/callout.h>
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#endif
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#if defined(BSD) && defined(_KERNEL)
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# if NETBSD_LT_REV(399000000) || defined(__osf__) || FREEBSD_LT_REV(500043)
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# include <sys/select.h>
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# else
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# include <sys/selinfo.h>
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# endif
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#endif
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#if !defined(linux) || !defined(_KERNEL)
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# include <netinet/in.h>
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#endif
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#ifndef SOLARIS
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# if (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
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# define SOLARIS 1
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# else
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# define SOLARIS 0
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# endif
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#endif
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#if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51)
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# define SIOCADAFR _IOW('r', 60, struct ipfobj)
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# define SIOCRMAFR _IOW('r', 61, struct ipfobj)
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# define SIOCSETFF _IOW('r', 62, u_int)
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# define SIOCGETFF _IOR('r', 63, u_int)
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# define SIOCGETFS _IOWR('r', 64, struct ipfobj)
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# define SIOCIPFFL _IOWR('r', 65, int)
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# define SIOCIPFFB _IOR('r', 66, int)
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# define SIOCADIFR _IOW('r', 67, struct ipfobj)
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# define SIOCRMIFR _IOW('r', 68, struct ipfobj)
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# define SIOCSWAPA _IOR('r', 69, u_int)
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# define SIOCINAFR _IOW('r', 70, struct ipfobj)
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# define SIOCINIFR _IOW('r', 71, struct ipfobj)
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# define SIOCFRENB _IOW('r', 72, u_int)
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# define SIOCFRSYN _IOW('r', 73, u_int)
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# define SIOCFRZST _IOWR('r', 74, struct ipfobj)
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# define SIOCZRLST _IOWR('r', 75, struct ipfobj)
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# define SIOCAUTHW _IOWR('r', 76, struct ipfobj)
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# define SIOCAUTHR _IOWR('r', 77, struct ipfobj)
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# define SIOCSTAT1 _IOWR('r', 78, struct ipfobj)
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# define SIOCSTLCK _IOWR('r', 79, u_int)
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# define SIOCSTPUT _IOWR('r', 80, struct ipfobj)
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# define SIOCSTGET _IOWR('r', 81, struct ipfobj)
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# define SIOCSTGSZ _IOWR('r', 82, struct ipfobj)
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# define SIOCSTAT2 _IOWR('r', 83, struct ipfobj)
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# define SIOCSETLG _IOWR('r', 84, int)
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# define SIOCGETLG _IOWR('r', 85, int)
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# define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve)
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# define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj)
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# define SIOCIPFGET _IOWR('r', 88, struct ipfobj)
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# define SIOCIPFSET _IOWR('r', 89, struct ipfobj)
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# define SIOCIPFL6 _IOWR('r', 90, int)
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# define SIOCIPFITER _IOWR('r', 91, struct ipfobj)
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# define SIOCGENITER _IOWR('r', 92, struct ipfobj)
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# define SIOCGTABL _IOWR('r', 93, struct ipfobj)
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# define SIOCIPFDELTOK _IOWR('r', 94, int)
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# define SIOCLOOKUPITER _IOWR('r', 95, struct ipfobj)
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# define SIOCGTQTAB _IOWR('r', 96, struct ipfobj)
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# define SIOCMATCHFLUSH _IOWR('r', 97, struct ipfobj)
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# define SIOCIPFINTERROR _IOR('r', 98, int)
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#else
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# define SIOCADAFR _IOW(r, 60, struct ipfobj)
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# define SIOCRMAFR _IOW(r, 61, struct ipfobj)
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# define SIOCSETFF _IOW(r, 62, u_int)
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# define SIOCGETFF _IOR(r, 63, u_int)
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# define SIOCGETFS _IOWR(r, 64, struct ipfobj)
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# define SIOCIPFFL _IOWR(r, 65, int)
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# define SIOCIPFFB _IOR(r, 66, int)
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# define SIOCADIFR _IOW(r, 67, struct ipfobj)
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# define SIOCRMIFR _IOW(r, 68, struct ipfobj)
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# define SIOCSWAPA _IOR(r, 69, u_int)
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# define SIOCINAFR _IOW(r, 70, struct ipfobj)
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# define SIOCINIFR _IOW(r, 71, struct ipfobj)
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# define SIOCFRENB _IOW(r, 72, u_int)
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# define SIOCFRSYN _IOW(r, 73, u_int)
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# define SIOCFRZST _IOWR(r, 74, struct ipfobj)
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# define SIOCZRLST _IOWR(r, 75, struct ipfobj)
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# define SIOCAUTHW _IOWR(r, 76, struct ipfobj)
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# define SIOCAUTHR _IOWR(r, 77, struct ipfobj)
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# define SIOCSTAT1 _IOWR(r, 78, struct ipfobj)
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# define SIOCSTLCK _IOWR(r, 79, u_int)
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# define SIOCSTPUT _IOWR(r, 80, struct ipfobj)
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# define SIOCSTGET _IOWR(r, 81, struct ipfobj)
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# define SIOCSTGSZ _IOWR(r, 82, struct ipfobj)
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# define SIOCSTAT2 _IOWR(r, 83, struct ipfobj)
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# define SIOCSETLG _IOWR(r, 84, int)
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# define SIOCGETLG _IOWR(r, 85, int)
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# define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve)
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# define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj)
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# define SIOCIPFGET _IOWR(r, 88, struct ipfobj)
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# define SIOCIPFSET _IOWR(r, 89, struct ipfobj)
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# define SIOCIPFL6 _IOWR(r, 90, int)
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# define SIOCIPFITER _IOWR(r, 91, struct ipfobj)
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# define SIOCGENITER _IOWR(r, 92, struct ipfobj)
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# define SIOCGTABL _IOWR(r, 93, struct ipfobj)
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# define SIOCIPFDELTOK _IOWR(r, 94, int)
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# define SIOCLOOKUPITER _IOWR(r, 95, struct ipfobj)
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# define SIOCGTQTAB _IOWR(r, 96, struct ipfobj)
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# define SIOCMATCHFLUSH _IOWR(r, 97, struct ipfobj)
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# define SIOCIPFINTERROR _IOR(r, 98, int)
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#endif
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#define SIOCADDFR SIOCADAFR
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#define SIOCDELFR SIOCRMAFR
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#define SIOCINSFR SIOCINAFR
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#define SIOCATHST SIOCSTAT1
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#define SIOCGFRST SIOCSTAT2
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struct ipscan;
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struct ifnet;
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struct ipf_main_softc_s;
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typedef int (* lookupfunc_t)(struct ipf_main_softc_s *, void *,
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int, void *, u_int);
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/*
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* i6addr is used as a container for both IPv4 and IPv6 addresses, as well
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* as other types of objects, depending on its qualifier.
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*/
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#ifdef USE_INET6
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typedef union i6addr {
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u_32_t i6[4];
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struct in_addr in4;
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struct in6_addr in6;
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void *vptr[2];
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lookupfunc_t lptr[2];
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struct {
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u_short type;
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u_short subtype;
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int name;
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} i6un;
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} i6addr_t;
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#else
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typedef union i6addr {
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u_32_t i6[4];
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struct in_addr in4;
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void *vptr[2];
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lookupfunc_t lptr[2];
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struct {
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u_short type;
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u_short subtype;
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int name;
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} i6un;
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} i6addr_t;
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#endif
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#define in4_addr in4.s_addr
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#define iplookupnum i6[1]
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#define iplookupname i6un.name
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#define iplookuptype i6un.type
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#define iplookupsubtype i6un.subtype
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/*
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* NOTE: These DO overlap the above on 64bit systems and this IS recognised.
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*/
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#define iplookupptr vptr[0]
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#define iplookupfunc lptr[1]
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/* Avoid casting to a type presuming 64-bit alignment. */
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#define I60(x) (((u_32_t *)(x))[0])
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#define I61(x) (((u_32_t *)(x))[1])
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#define I62(x) (((u_32_t *)(x))[2])
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#define I63(x) (((u_32_t *)(x))[3])
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#define HI60(x) ntohl(((u_32_t *)(x))[0])
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#define HI61(x) ntohl(((u_32_t *)(x))[1])
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#define HI62(x) ntohl(((u_32_t *)(x))[2])
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#define HI63(x) ntohl(((u_32_t *)(x))[3])
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#define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \
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(I61(a) == I61(b)) && (I60(a) == I60(b)))
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#define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \
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(I61(a) != I61(b)) || (I60(a) != I60(b)))
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#define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0)
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#define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0)
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#define IP6_ISONES(a) ((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \
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(I61(a) == 0xffffffff) && (I60(a) == 0xffffffff))
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#define IP6_GT(a,b) (ntohl(HI60(a)) > ntohl(HI60(b)) || \
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(HI60(a) == HI60(b) && \
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(ntohl(HI61(a)) > ntohl(HI61(b)) || \
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(HI61(a) == HI61(b) && \
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(ntohl(HI62(a)) > ntohl(HI62(b)) || \
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(HI62(a) == HI62(b) && \
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ntohl(HI63(a)) > ntohl(HI63(b))))))))
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#define IP6_LT(a,b) (ntohl(HI60(a)) < ntohl(HI60(b)) || \
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(HI60(a) == HI60(b) && \
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(ntohl(HI61(a)) < ntohl(HI61(b)) || \
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(HI61(a) == HI61(b) && \
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(ntohl(HI62(a)) < ntohl(HI62(b)) || \
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(HI62(a) == HI62(b) && \
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ntohl(HI63(a)) < ntohl(HI63(b))))))))
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#define NLADD(n,x) htonl(ntohl(n) + (x))
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#define IP6_INC(a) \
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do { u_32_t *_i6 = (u_32_t *)(a); \
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_i6[3] = NLADD(_i6[3], 1); \
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if (_i6[3] == 0) { \
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_i6[2] = NLADD(_i6[2], 1); \
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if (_i6[2] == 0) { \
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_i6[1] = NLADD(_i6[1], 1); \
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if (_i6[1] == 0) { \
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_i6[0] = NLADD(_i6[0], 1); \
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} \
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} \
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} \
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} while (0)
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#define IP6_ADD(a,x,d) \
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do { i6addr_t *_s = (i6addr_t *)(a); \
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i6addr_t *_d = (i6addr_t *)(d); \
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_d->i6[0] = NLADD(_s->i6[0], x); \
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if (ntohl(_d->i6[0]) < ntohl(_s->i6[0])) { \
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_d->i6[1] = NLADD(_d->i6[1], 1); \
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if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \
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_d->i6[2] = NLADD(_d->i6[2], 1); \
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if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \
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_d->i6[3] = NLADD(_d->i6[3], 1); \
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} \
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} \
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} \
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} while (0)
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#define IP6_AND(a,b,d) do { i6addr_t *_s1 = (i6addr_t *)(a); \
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i6addr_t *_s2 = (i6addr_t *)(b); \
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i6addr_t *_d = (i6addr_t *)(d); \
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_d->i6[0] = _s1->i6[0] & _s2->i6[0]; \
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_d->i6[1] = _s1->i6[1] & _s2->i6[1]; \
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_d->i6[2] = _s1->i6[2] & _s2->i6[2]; \
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_d->i6[3] = _s1->i6[3] & _s2->i6[3]; \
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} while (0)
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#define IP6_ANDASSIGN(a,m) \
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do { i6addr_t *_d = (i6addr_t *)(a); \
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i6addr_t *_m = (i6addr_t *)(m); \
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_d->i6[0] &= _m->i6[0]; \
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_d->i6[1] &= _m->i6[1]; \
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_d->i6[2] &= _m->i6[2]; \
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_d->i6[3] &= _m->i6[3]; \
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} while (0)
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#define IP6_MASKEQ(a,m,b) \
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(((I60(a) & I60(m)) == I60(b)) && \
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((I61(a) & I61(m)) == I61(b)) && \
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((I62(a) & I62(m)) == I62(b)) && \
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((I63(a) & I63(m)) == I63(b)))
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#define IP6_MASKNEQ(a,m,b) \
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(((I60(a) & I60(m)) != I60(b)) || \
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((I61(a) & I61(m)) != I61(b)) || \
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((I62(a) & I62(m)) != I62(b)) || \
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((I63(a) & I63(m)) != I63(b)))
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#define IP6_MERGE(a,b,c) \
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do { i6addr_t *_d, *_s1, *_s2; \
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_d = (i6addr_t *)(a); \
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_s1 = (i6addr_t *)(b); \
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_s2 = (i6addr_t *)(c); \
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_d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \
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_d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \
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_d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \
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_d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \
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} while (0)
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#define IP6_MASK(a,b,c) \
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do { i6addr_t *_d, *_s1, *_s2; \
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_d = (i6addr_t *)(a); \
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_s1 = (i6addr_t *)(b); \
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_s2 = (i6addr_t *)(c); \
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_d->i6[0] = _s1->i6[0] & ~_s2->i6[0]; \
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_d->i6[1] = _s1->i6[1] & ~_s2->i6[1]; \
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_d->i6[2] = _s1->i6[2] & ~_s2->i6[2]; \
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_d->i6[3] = _s1->i6[3] & ~_s2->i6[3]; \
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} while (0)
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#define IP6_SETONES(a) \
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do { i6addr_t *_d = (i6addr_t *)(a); \
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_d->i6[0] = 0xffffffff; \
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_d->i6[1] = 0xffffffff; \
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_d->i6[2] = 0xffffffff; \
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_d->i6[3] = 0xffffffff; \
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} while (0)
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typedef union ipso_u {
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u_short ipso_ripso[2];
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u_32_t ipso_doi;
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} ipso_t;
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typedef struct fr_ip {
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u_32_t fi_v:4; /* IP version */
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u_32_t fi_xx:4; /* spare */
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u_32_t fi_tos:8; /* IP packet TOS */
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u_32_t fi_ttl:8; /* IP packet TTL */
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u_32_t fi_p:8; /* IP packet protocol */
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u_32_t fi_optmsk; /* bitmask composed from IP options */
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i6addr_t fi_src; /* source address from packet */
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i6addr_t fi_dst; /* destination address from packet */
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ipso_t fi_ipso; /* IP security options */
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u_32_t fi_flx; /* packet flags */
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u_32_t fi_tcpmsk; /* TCP options set/reset */
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u_32_t fi_ports[2]; /* TCP ports */
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u_char fi_tcpf; /* TCP flags */
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u_char fi_sensitivity;
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u_char fi_xxx[2]; /* pad */
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} fr_ip_t;
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/*
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* For use in fi_flx
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*/
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#define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/
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#define FI_OPTIONS 0x0002
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#define FI_FRAG 0x0004
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#define FI_SHORT 0x0008
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#define FI_NATED 0x0010
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#define FI_MULTICAST 0x0020
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#define FI_BROADCAST 0x0040
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#define FI_MBCAST 0x0080
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#define FI_STATE 0x0100
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#define FI_BADNAT 0x0200
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#define FI_BAD 0x0400
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#define FI_OOW 0x0800 /* Out of state window, else match */
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#define FI_ICMPERR 0x1000
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#define FI_FRAGBODY 0x2000
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#define FI_BADSRC 0x4000
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#define FI_LOWTTL 0x8000
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#define FI_CMP 0x5cfe3 /* Not FI_FRAG,FI_NATED,FI_FRAGTAIL */
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#define FI_ICMPCMP 0x0003 /* Flags we can check for ICMP error packets */
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#define FI_WITH 0x5effe /* Not FI_TCPUDP */
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#define FI_V6EXTHDR 0x10000
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#define FI_COALESCE 0x20000
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#define FI_NEWNAT 0x40000
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#define FI_ICMPQUERY 0x80000
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#define FI_ENCAP 0x100000 /* encap/decap with NAT */
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#define FI_AH 0x200000 /* AH header present */
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#define FI_DOCKSUM 0x10000000 /* Proxy wants L4 recalculation */
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#define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */
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#define FI_NOWILD 0x40000000 /* Do not do wildcard searches */
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#define FI_IGNORE 0x80000000
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#define fi_secmsk fi_ipso.ipso_ripso[0]
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#define fi_auth fi_ipso.ipso_ripso[1]
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#define fi_doi fi_ipso.ipso_doi
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#define fi_saddr fi_src.in4.s_addr
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#define fi_daddr fi_dst.in4.s_addr
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#define fi_srcnum fi_src.iplookupnum
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#define fi_dstnum fi_dst.iplookupnum
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#define fi_srcname fi_src.iplookupname
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#define fi_dstname fi_dst.iplookupname
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#define fi_srctype fi_src.iplookuptype
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#define fi_dsttype fi_dst.iplookuptype
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#define fi_srcsubtype fi_src.iplookupsubtype
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#define fi_dstsubtype fi_dst.iplookupsubtype
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#define fi_srcptr fi_src.iplookupptr
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#define fi_dstptr fi_dst.iplookupptr
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#define fi_srcfunc fi_src.iplookupfunc
|
|
#define fi_dstfunc fi_dst.iplookupfunc
|
|
|
|
|
|
/*
|
|
* These are both used by the state and NAT code to indicate that one port or
|
|
* the other should be treated as a wildcard.
|
|
* NOTE: When updating, check bit masks in ip_state.h and update there too.
|
|
*/
|
|
#define SI_W_SPORT 0x00000100
|
|
#define SI_W_DPORT 0x00000200
|
|
#define SI_WILDP (SI_W_SPORT|SI_W_DPORT)
|
|
#define SI_W_SADDR 0x00000400
|
|
#define SI_W_DADDR 0x00000800
|
|
#define SI_WILDA (SI_W_SADDR|SI_W_DADDR)
|
|
#define SI_NEWFR 0x00001000
|
|
#define SI_CLONE 0x00002000
|
|
#define SI_CLONED 0x00004000
|
|
#define SI_NEWCLONE 0x00008000
|
|
|
|
typedef struct {
|
|
u_short fda_ports[2];
|
|
u_char fda_tcpf; /* TCP header flags (SYN, ACK, etc) */
|
|
} frdat_t;
|
|
|
|
typedef enum fr_breasons_e {
|
|
FRB_BLOCKED = 0,
|
|
FRB_LOGFAIL = 1,
|
|
FRB_PPSRATE = 2,
|
|
FRB_JUMBO = 3,
|
|
FRB_MAKEFRIP = 4,
|
|
FRB_STATEADD = 5,
|
|
FRB_UPDATEIPID = 6,
|
|
FRB_LOGFAIL2 = 7,
|
|
FRB_DECAPFRIP = 8,
|
|
FRB_AUTHNEW = 9,
|
|
FRB_AUTHCAPTURE = 10,
|
|
FRB_COALESCE = 11,
|
|
FRB_PULLUP = 12,
|
|
FRB_AUTHFEEDBACK = 13,
|
|
FRB_BADFRAG = 14,
|
|
FRB_NATV4 = 15,
|
|
FRB_NATV6 = 16,
|
|
} fr_breason_t;
|
|
|
|
#define FRB_MAX_VALUE 16
|
|
|
|
typedef enum ipf_cksum_e {
|
|
FI_CK_BAD = -1,
|
|
FI_CK_NEEDED = 0,
|
|
FI_CK_SUMOK = 1,
|
|
FI_CK_L4PART = 2,
|
|
FI_CK_L4FULL = 4
|
|
} ipf_cksum_t;
|
|
|
|
typedef struct fr_info {
|
|
void *fin_main_soft;
|
|
void *fin_ifp; /* interface packet is `on' */
|
|
struct frentry *fin_fr; /* last matching rule */
|
|
int fin_out; /* in or out ? 1 == out, 0 == in */
|
|
fr_ip_t fin_fi; /* IP Packet summary */
|
|
frdat_t fin_dat; /* TCP/UDP ports, ICMP code/type */
|
|
int fin_dlen; /* length of data portion of packet */
|
|
int fin_plen;
|
|
u_32_t fin_rule; /* rule # last matched */
|
|
u_short fin_hlen; /* length of IP header in bytes */
|
|
char fin_group[FR_GROUPLEN]; /* group number, -1 for none */
|
|
void *fin_dp; /* start of data past IP header */
|
|
/*
|
|
* Fields after fin_dp aren't used for compression of log records.
|
|
* fin_fi contains the IP version (fin_family)
|
|
* fin_rule isn't included because adding a new rule can change it but
|
|
* not change fin_fr. fin_rule is the rule number reported.
|
|
* It isn't necessary to include fin_crc because that is checked
|
|
* for explicitly, before calling bcmp.
|
|
*/
|
|
u_32_t fin_crc; /* Simple calculation for logging */
|
|
int fin_family; /* AF_INET, etc. */
|
|
int fin_icode; /* ICMP error to return */
|
|
int fin_mtu; /* MTU input for ICMP need-frag */
|
|
int fin_rev; /* state only: 1 = reverse */
|
|
int fin_ipoff; /* # bytes from buffer start to hdr */
|
|
u_32_t fin_id; /* IP packet id field */
|
|
u_short fin_l4hlen; /* length of L4 header, if known */
|
|
u_short fin_off;
|
|
int fin_depth; /* Group nesting depth */
|
|
int fin_error; /* Error code to return */
|
|
ipf_cksum_t fin_cksum; /* -1 = bad, 1 = good, 0 = not done */
|
|
fr_breason_t fin_reason; /* why auto blocked */
|
|
u_int fin_pktnum;
|
|
void *fin_nattag;
|
|
struct frdest *fin_dif;
|
|
struct frdest *fin_tif;
|
|
union {
|
|
ip_t *fip_ip;
|
|
#ifdef USE_INET6
|
|
ip6_t *fip_ip6;
|
|
#endif
|
|
} fin_ipu;
|
|
mb_t **fin_mp; /* pointer to pointer to mbuf */
|
|
mb_t *fin_m; /* pointer to mbuf */
|
|
#ifdef MENTAT
|
|
mb_t *fin_qfm; /* pointer to mblk where pkt starts */
|
|
void *fin_qpi;
|
|
char fin_ifname[LIFNAMSIZ];
|
|
#endif
|
|
#ifdef __sgi
|
|
void *fin_hbuf;
|
|
#endif
|
|
void *fin_fraghdr; /* pointer to start of ipv6 frag hdr */
|
|
} fr_info_t;
|
|
|
|
#define fin_ip fin_ipu.fip_ip
|
|
#define fin_ip6 fin_ipu.fip_ip6
|
|
#define fin_v fin_fi.fi_v
|
|
#define fin_p fin_fi.fi_p
|
|
#define fin_flx fin_fi.fi_flx
|
|
#define fin_optmsk fin_fi.fi_optmsk
|
|
#define fin_secmsk fin_fi.fi_secmsk
|
|
#define fin_doi fin_fi.fi_doi
|
|
#define fin_auth fin_fi.fi_auth
|
|
#define fin_src fin_fi.fi_src.in4
|
|
#define fin_saddr fin_fi.fi_saddr
|
|
#define fin_dst fin_fi.fi_dst.in4
|
|
#define fin_daddr fin_fi.fi_daddr
|
|
#define fin_data fin_fi.fi_ports
|
|
#define fin_sport fin_fi.fi_ports[0]
|
|
#define fin_dport fin_fi.fi_ports[1]
|
|
#define fin_tcpf fin_fi.fi_tcpf
|
|
#define fin_src6 fin_fi.fi_src
|
|
#define fin_dst6 fin_fi.fi_dst
|
|
#define fin_srcip6 fin_fi.fi_src.in6
|
|
#define fin_dstip6 fin_fi.fi_dst.in6
|
|
|
|
#define IPF_IN 0
|
|
#define IPF_OUT 1
|
|
|
|
typedef struct frentry *(*ipfunc_t)(fr_info_t *, u_32_t *);
|
|
typedef int (*ipfuncinit_t)(struct ipf_main_softc_s *,
|
|
struct frentry *);
|
|
|
|
typedef struct ipfunc_resolve {
|
|
char ipfu_name[32];
|
|
ipfunc_t ipfu_addr;
|
|
ipfuncinit_t ipfu_init;
|
|
ipfuncinit_t ipfu_fini;
|
|
} ipfunc_resolve_t;
|
|
|
|
/*
|
|
* Size for compares on fr_info structures
|
|
*/
|
|
#define FI_CSIZE offsetof(fr_info_t, fin_icode)
|
|
#define FI_LCSIZE offsetof(fr_info_t, fin_dp)
|
|
|
|
/*
|
|
* Size for copying cache fr_info structure
|
|
*/
|
|
#define FI_COPYSIZE offsetof(fr_info_t, fin_dp)
|
|
|
|
/*
|
|
* Structure for holding IPFilter's tag information
|
|
*/
|
|
#define IPFTAG_LEN 16
|
|
typedef struct {
|
|
union {
|
|
u_32_t iptu_num[4];
|
|
char iptu_tag[IPFTAG_LEN];
|
|
} ipt_un;
|
|
int ipt_not;
|
|
} ipftag_t;
|
|
|
|
#define ipt_tag ipt_un.iptu_tag
|
|
#define ipt_num ipt_un.iptu_num
|
|
|
|
/*
|
|
* Structure to define address for pool lookups.
|
|
*/
|
|
typedef struct {
|
|
u_char adf_len;
|
|
sa_family_t adf_family;
|
|
u_char adf_xxx[2];
|
|
i6addr_t adf_addr;
|
|
} addrfamily_t;
|
|
|
|
|
|
RBI_LINK(ipf_rb, host_node_s);
|
|
|
|
typedef struct host_node_s {
|
|
RBI_FIELD(ipf_rb) hn_entry;
|
|
addrfamily_t hn_addr;
|
|
int hn_active;
|
|
} host_node_t;
|
|
|
|
typedef RBI_HEAD(ipf_rb, host_node_s) ipf_rb_head_t;
|
|
|
|
typedef struct host_track_s {
|
|
ipf_rb_head_t ht_root;
|
|
int ht_max_nodes;
|
|
int ht_max_per_node;
|
|
int ht_netmask;
|
|
int ht_cur_nodes;
|
|
} host_track_t;
|
|
|
|
|
|
typedef enum fr_dtypes_e {
|
|
FRD_NORMAL = 0,
|
|
FRD_DSTLIST
|
|
} fr_dtypes_t;
|
|
/*
|
|
* This structure is used to hold information about the next hop for where
|
|
* to forward a packet.
|
|
*/
|
|
typedef struct frdest {
|
|
void *fd_ptr;
|
|
addrfamily_t fd_addr;
|
|
fr_dtypes_t fd_type;
|
|
int fd_name;
|
|
int fd_unused; /* part of the kernel/user ABI */
|
|
} frdest_t;
|
|
|
|
#define fd_ip6 fd_addr.adf_addr
|
|
#define fd_ip fd_ip6.in4
|
|
|
|
|
|
typedef enum fr_ctypes_e {
|
|
FR_NONE = 0,
|
|
FR_EQUAL,
|
|
FR_NEQUAL,
|
|
FR_LESST,
|
|
FR_GREATERT,
|
|
FR_LESSTE,
|
|
FR_GREATERTE,
|
|
FR_OUTRANGE,
|
|
FR_INRANGE,
|
|
FR_INCRANGE
|
|
} fr_ctypes_t;
|
|
|
|
/*
|
|
* This structure holds information about a port comparison.
|
|
*/
|
|
typedef struct frpcmp {
|
|
fr_ctypes_t frp_cmp; /* data for port comparisons */
|
|
u_32_t frp_port; /* top port for <> and >< */
|
|
u_32_t frp_top; /* top port for <> and >< */
|
|
} frpcmp_t;
|
|
|
|
|
|
/*
|
|
* Structure containing all the relevant TCP things that can be checked in
|
|
* a filter rule.
|
|
*/
|
|
typedef struct frtuc {
|
|
u_char ftu_tcpfm; /* tcp flags mask */
|
|
u_char ftu_tcpf; /* tcp flags */
|
|
frpcmp_t ftu_src;
|
|
frpcmp_t ftu_dst;
|
|
} frtuc_t;
|
|
|
|
#define ftu_scmp ftu_src.frp_cmp
|
|
#define ftu_dcmp ftu_dst.frp_cmp
|
|
#define ftu_sport ftu_src.frp_port
|
|
#define ftu_dport ftu_dst.frp_port
|
|
#define ftu_stop ftu_src.frp_top
|
|
#define ftu_dtop ftu_dst.frp_top
|
|
|
|
#define FR_TCPFMAX 0x3f
|
|
|
|
typedef enum fr_atypes_e {
|
|
FRI_NONE = -1, /* For LHS of NAT */
|
|
FRI_NORMAL = 0, /* Normal address */
|
|
FRI_DYNAMIC, /* dynamic address */
|
|
FRI_LOOKUP, /* address is a pool # */
|
|
FRI_RANGE, /* address/mask is a range */
|
|
FRI_NETWORK, /* network address from if */
|
|
FRI_BROADCAST, /* broadcast address from if */
|
|
FRI_PEERADDR, /* Peer address for P-to-P */
|
|
FRI_NETMASKED, /* network address with netmask from if */
|
|
FRI_SPLIT, /* For NAT compatibility */
|
|
FRI_INTERFACE /* address is based on interface name */
|
|
} fr_atypes_t;
|
|
|
|
/*
|
|
* This structure makes up what is considered to be the IPFilter specific
|
|
* matching components of a filter rule, as opposed to the data structures
|
|
* used to define the result which are in frentry_t and not here.
|
|
*/
|
|
typedef struct fripf {
|
|
fr_ip_t fri_ip;
|
|
fr_ip_t fri_mip; /* mask structure */
|
|
|
|
u_short fri_icmpm; /* data for ICMP packets (mask) */
|
|
u_short fri_icmp;
|
|
|
|
frtuc_t fri_tuc;
|
|
fr_atypes_t fri_satype; /* addres type */
|
|
fr_atypes_t fri_datype; /* addres type */
|
|
int fri_sifpidx; /* doing dynamic addressing */
|
|
int fri_difpidx; /* index into fr_ifps[] to use when */
|
|
} fripf_t;
|
|
|
|
#define fri_dlookup fri_mip.fi_dst
|
|
#define fri_slookup fri_mip.fi_src
|
|
#define fri_dstnum fri_mip.fi_dstnum
|
|
#define fri_srcnum fri_mip.fi_srcnum
|
|
#define fri_dstname fri_mip.fi_dstname
|
|
#define fri_srcname fri_mip.fi_srcname
|
|
#define fri_dstptr fri_mip.fi_dstptr
|
|
#define fri_srcptr fri_mip.fi_srcptr
|
|
|
|
|
|
typedef enum fr_rtypes_e {
|
|
FR_T_NONE = 0,
|
|
FR_T_IPF, /* IPF structures */
|
|
FR_T_BPFOPC, /* BPF opcode */
|
|
FR_T_CALLFUNC, /* callout to function in fr_func only */
|
|
FR_T_COMPIPF, /* compiled C code */
|
|
FR_T_IPFEXPR, /* IPF expression */
|
|
FR_T_BUILTIN = 0x40000000, /* rule is in kernel space */
|
|
FR_T_IPF_BUILTIN,
|
|
FR_T_BPFOPC_BUILTIN,
|
|
FR_T_CALLFUNC_BUILTIN,
|
|
FR_T_COMPIPF_BUILTIN,
|
|
FR_T_IPFEXPR_BUILTIN
|
|
} fr_rtypes_t;
|
|
|
|
typedef struct frentry * (* frentfunc_t)(fr_info_t *);
|
|
|
|
typedef struct frentry {
|
|
ipfmutex_t fr_lock;
|
|
struct frentry *fr_next;
|
|
struct frentry **fr_pnext;
|
|
struct frgroup *fr_grp;
|
|
struct frgroup *fr_grphead;
|
|
struct frgroup *fr_icmpgrp;
|
|
struct ipscan *fr_isc;
|
|
struct frentry *fr_dnext; /* 2 fr_die linked list pointers */
|
|
struct frentry **fr_pdnext;
|
|
void *fr_ifas[4];
|
|
void *fr_ptr; /* for use with fr_arg */
|
|
int fr_comment; /* text comment for rule */
|
|
int fr_size; /* size of this structure */
|
|
int fr_ref; /* reference count */
|
|
int fr_statecnt; /* state count - for limit rules */
|
|
u_32_t fr_die; /* only used on loading the rule */
|
|
u_int fr_cksum; /* checksum on filter rules for performance */
|
|
/*
|
|
* The line number from a file is here because we need to be able to
|
|
* match the rule generated with ``grep rule ipf.conf | ipf -rf -''
|
|
* with the rule loaded using ``ipf -f ipf.conf'' - thus it can't be
|
|
* on the other side of fr_func.
|
|
*/
|
|
int fr_flineno; /* line number from conf file */
|
|
/*
|
|
* These are only incremented when a packet matches this rule and
|
|
* it is the last match
|
|
*/
|
|
U_QUAD_T fr_hits;
|
|
U_QUAD_T fr_bytes;
|
|
|
|
/*
|
|
* For PPS rate limiting
|
|
* fr_lpu is used to always have the same size for this field,
|
|
* allocating 64bits for seconds and 32bits for milliseconds.
|
|
*/
|
|
union {
|
|
struct timeval frp_lastpkt;
|
|
char frp_bytes[12];
|
|
} fr_lpu;
|
|
int fr_curpps;
|
|
|
|
union {
|
|
void *fru_data;
|
|
char *fru_caddr;
|
|
fripf_t *fru_ipf;
|
|
frentfunc_t fru_func;
|
|
} fr_dun;
|
|
|
|
/*
|
|
* Fields after this may not change whilst in the kernel.
|
|
*/
|
|
ipfunc_t fr_func; /* call this function */
|
|
int fr_dsize;
|
|
int fr_pps;
|
|
fr_rtypes_t fr_type;
|
|
u_32_t fr_flags; /* per-rule flags && options (see below) */
|
|
u_32_t fr_logtag; /* user defined log tag # */
|
|
u_32_t fr_collect; /* collection number */
|
|
u_int fr_arg; /* misc. numeric arg for rule */
|
|
u_int fr_loglevel; /* syslog log facility + priority */
|
|
u_char fr_family;
|
|
u_char fr_icode; /* return ICMP code */
|
|
int fr_group; /* group to which this rule belongs */
|
|
int fr_grhead; /* group # which this rule starts */
|
|
int fr_ifnames[4];
|
|
int fr_isctag;
|
|
int fr_rpc; /* XID Filtering */
|
|
ipftag_t fr_nattag;
|
|
frdest_t fr_tifs[2]; /* "to"/"reply-to" interface */
|
|
frdest_t fr_dif; /* duplicate packet interface */
|
|
/*
|
|
* These are all options related to stateful filtering
|
|
*/
|
|
host_track_t fr_srctrack;
|
|
int fr_nostatelog;
|
|
int fr_statemax; /* max reference count */
|
|
int fr_icmphead; /* ICMP group for state options */
|
|
u_int fr_age[2]; /* non-TCP state timeouts */
|
|
/*
|
|
* How big is the name buffer at the end?
|
|
*/
|
|
int fr_namelen;
|
|
char fr_names[1];
|
|
} frentry_t;
|
|
|
|
#define fr_lastpkt fr_lpu.frp_lastpkt
|
|
#define fr_caddr fr_dun.fru_caddr
|
|
#define fr_data fr_dun.fru_data
|
|
#define fr_dfunc fr_dun.fru_func
|
|
#define fr_ipf fr_dun.fru_ipf
|
|
#define fr_ip fr_ipf->fri_ip
|
|
#define fr_mip fr_ipf->fri_mip
|
|
#define fr_icmpm fr_ipf->fri_icmpm
|
|
#define fr_icmp fr_ipf->fri_icmp
|
|
#define fr_tuc fr_ipf->fri_tuc
|
|
#define fr_satype fr_ipf->fri_satype
|
|
#define fr_datype fr_ipf->fri_datype
|
|
#define fr_sifpidx fr_ipf->fri_sifpidx
|
|
#define fr_difpidx fr_ipf->fri_difpidx
|
|
#define fr_proto fr_ip.fi_p
|
|
#define fr_mproto fr_mip.fi_p
|
|
#define fr_ttl fr_ip.fi_ttl
|
|
#define fr_mttl fr_mip.fi_ttl
|
|
#define fr_tos fr_ip.fi_tos
|
|
#define fr_mtos fr_mip.fi_tos
|
|
#define fr_tcpfm fr_tuc.ftu_tcpfm
|
|
#define fr_tcpf fr_tuc.ftu_tcpf
|
|
#define fr_scmp fr_tuc.ftu_scmp
|
|
#define fr_dcmp fr_tuc.ftu_dcmp
|
|
#define fr_dport fr_tuc.ftu_dport
|
|
#define fr_sport fr_tuc.ftu_sport
|
|
#define fr_stop fr_tuc.ftu_stop
|
|
#define fr_dtop fr_tuc.ftu_dtop
|
|
#define fr_dst fr_ip.fi_dst.in4
|
|
#define fr_dst6 fr_ip.fi_dst
|
|
#define fr_daddr fr_ip.fi_dst.in4.s_addr
|
|
#define fr_src fr_ip.fi_src.in4
|
|
#define fr_src6 fr_ip.fi_src
|
|
#define fr_saddr fr_ip.fi_src.in4.s_addr
|
|
#define fr_dmsk fr_mip.fi_dst.in4
|
|
#define fr_dmsk6 fr_mip.fi_dst
|
|
#define fr_dmask fr_mip.fi_dst.in4.s_addr
|
|
#define fr_smsk fr_mip.fi_src.in4
|
|
#define fr_smsk6 fr_mip.fi_src
|
|
#define fr_smask fr_mip.fi_src.in4.s_addr
|
|
#define fr_dstnum fr_ip.fi_dstnum
|
|
#define fr_srcnum fr_ip.fi_srcnum
|
|
#define fr_dlookup fr_ip.fi_dst
|
|
#define fr_slookup fr_ip.fi_src
|
|
#define fr_dstname fr_ip.fi_dstname
|
|
#define fr_srcname fr_ip.fi_srcname
|
|
#define fr_dsttype fr_ip.fi_dsttype
|
|
#define fr_srctype fr_ip.fi_srctype
|
|
#define fr_dstsubtype fr_ip.fi_dstsubtype
|
|
#define fr_srcsubtype fr_ip.fi_srcsubtype
|
|
#define fr_dstptr fr_mip.fi_dstptr
|
|
#define fr_srcptr fr_mip.fi_srcptr
|
|
#define fr_dstfunc fr_mip.fi_dstfunc
|
|
#define fr_srcfunc fr_mip.fi_srcfunc
|
|
#define fr_optbits fr_ip.fi_optmsk
|
|
#define fr_optmask fr_mip.fi_optmsk
|
|
#define fr_secbits fr_ip.fi_secmsk
|
|
#define fr_secmask fr_mip.fi_secmsk
|
|
#define fr_authbits fr_ip.fi_auth
|
|
#define fr_authmask fr_mip.fi_auth
|
|
#define fr_doi fr_ip.fi_doi
|
|
#define fr_doimask fr_mip.fi_doi
|
|
#define fr_flx fr_ip.fi_flx
|
|
#define fr_mflx fr_mip.fi_flx
|
|
#define fr_ifa fr_ifas[0]
|
|
#define fr_oifa fr_ifas[2]
|
|
#define fr_tif fr_tifs[0]
|
|
#define fr_rif fr_tifs[1]
|
|
|
|
#define FR_NOLOGTAG 0
|
|
|
|
#define FR_CMPSIZ (sizeof(struct frentry) - \
|
|
offsetof(struct frentry, fr_func))
|
|
#define FR_NAME(_f, _n) (_f)->fr_names + (_f)->_n
|
|
|
|
|
|
/*
|
|
* fr_flags
|
|
*/
|
|
#define FR_BLOCK 0x00001 /* do not allow packet to pass */
|
|
#define FR_PASS 0x00002 /* allow packet to pass */
|
|
#define FR_AUTH 0x00003 /* use authentication */
|
|
#define FR_PREAUTH 0x00004 /* require preauthentication */
|
|
#define FR_ACCOUNT 0x00005 /* Accounting rule */
|
|
#define FR_SKIP 0x00006 /* skip rule */
|
|
#define FR_DECAPSULATE 0x00008 /* decapsulate rule */
|
|
#define FR_CALL 0x00009 /* call rule */
|
|
#define FR_CMDMASK 0x0000f
|
|
#define FR_LOG 0x00010 /* Log */
|
|
#define FR_LOGB 0x00011 /* Log-fail */
|
|
#define FR_LOGP 0x00012 /* Log-pass */
|
|
#define FR_LOGMASK (FR_LOG|FR_CMDMASK)
|
|
#define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */
|
|
#define FR_NOTSRCIP 0x00040
|
|
#define FR_NOTDSTIP 0x00080
|
|
#define FR_QUICK 0x00100 /* match & stop processing list */
|
|
#define FR_KEEPFRAG 0x00200 /* keep fragment information */
|
|
#define FR_KEEPSTATE 0x00400 /* keep `connection' state information */
|
|
#define FR_FASTROUTE 0x00800 /* bypass normal routing */
|
|
#define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */
|
|
#define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */
|
|
#define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */
|
|
#define FR_OUTQUE 0x04000 /* outgoing packets */
|
|
#define FR_INQUE 0x08000 /* ingoing packets */
|
|
#define FR_LOGBODY 0x10000 /* Log the body */
|
|
#define FR_LOGFIRST 0x20000 /* Log the first byte if state held */
|
|
#define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */
|
|
#define FR_STLOOSE 0x80000 /* loose state checking */
|
|
#define FR_FRSTRICT 0x100000 /* strict frag. cache */
|
|
#define FR_STSTRICT 0x200000 /* strict keep state */
|
|
#define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */
|
|
#define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */
|
|
#define FR_STATESYNC 0x1000000 /* synchronize state to slave */
|
|
#define FR_COPIED 0x2000000 /* copied from user space */
|
|
#define FR_INACTIVE 0x4000000 /* only used when flush'ing rules */
|
|
#define FR_NOMATCH 0x8000000 /* no match occured */
|
|
/* 0x10000000 FF_LOGPASS */
|
|
/* 0x20000000 FF_LOGBLOCK */
|
|
/* 0x40000000 FF_LOGNOMATCH */
|
|
/* 0x80000000 FF_BLOCKNONIP */
|
|
|
|
#define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP)
|
|
#define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK)
|
|
#define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS)
|
|
#define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH)
|
|
#define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH)
|
|
#define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT)
|
|
#define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP)
|
|
#define FR_ISDECAPS(x) (((x) & FR_CMDMASK) == FR_DECAPSULATE)
|
|
#define FR_ISNOMATCH(x) ((x) & FR_NOMATCH)
|
|
#define FR_INOUT (FR_INQUE|FR_OUTQUE)
|
|
|
|
/*
|
|
* recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags
|
|
*/
|
|
#define FF_LOGPASS 0x10000000
|
|
#define FF_LOGBLOCK 0x20000000
|
|
#define FF_LOGNOMATCH 0x40000000
|
|
#define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH)
|
|
#define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */
|
|
|
|
|
|
/*
|
|
* Structure that passes information on what/how to flush to the kernel.
|
|
*/
|
|
typedef struct ipfflush {
|
|
int ipflu_how;
|
|
int ipflu_arg;
|
|
} ipfflush_t;
|
|
|
|
|
|
/*
|
|
*
|
|
*/
|
|
typedef struct ipfgetctl {
|
|
u_int ipfg_min; /* min value */
|
|
u_int ipfg_current; /* current value */
|
|
u_int ipfg_max; /* max value */
|
|
u_int ipfg_default; /* default value */
|
|
u_int ipfg_steps; /* value increments */
|
|
char ipfg_name[40]; /* tag name for this control */
|
|
} ipfgetctl_t;
|
|
|
|
typedef struct ipfsetctl {
|
|
int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */
|
|
u_int ipfs_value; /* min value */
|
|
char ipfs_name[40]; /* tag name for this control */
|
|
} ipfsetctl_t;
|
|
|
|
|
|
/*
|
|
* Some of the statistics below are in their own counters, but most are kept
|
|
* in this single structure so that they can all easily be collected and
|
|
* copied back as required.
|
|
*/
|
|
typedef struct ipf_statistics {
|
|
u_long fr_icmp_coalesce;
|
|
u_long fr_tcp_frag;
|
|
u_long fr_tcp_pullup;
|
|
u_long fr_tcp_short;
|
|
u_long fr_tcp_small;
|
|
u_long fr_tcp_bad_flags;
|
|
u_long fr_udp_pullup;
|
|
u_long fr_ip_freed;
|
|
u_long fr_v6_ah_bad;
|
|
u_long fr_v6_bad;
|
|
u_long fr_v6_badfrag;
|
|
u_long fr_v6_dst_bad;
|
|
u_long fr_v6_esp_pullup;
|
|
u_long fr_v6_ext_short;
|
|
u_long fr_v6_ext_pullup;
|
|
u_long fr_v6_ext_hlen;
|
|
u_long fr_v6_frag_bad;
|
|
u_long fr_v6_frag_pullup;
|
|
u_long fr_v6_frag_size;
|
|
u_long fr_v6_gre_pullup;
|
|
u_long fr_v6_icmp6_pullup;
|
|
u_long fr_v6_rh_bad;
|
|
u_long fr_v6_badttl; /* TTL in packet doesn't reach minimum */
|
|
u_long fr_v4_ah_bad;
|
|
u_long fr_v4_ah_pullup;
|
|
u_long fr_v4_esp_pullup;
|
|
u_long fr_v4_cipso_bad;
|
|
u_long fr_v4_cipso_tlen;
|
|
u_long fr_v4_gre_frag;
|
|
u_long fr_v4_gre_pullup;
|
|
u_long fr_v4_icmp_frag;
|
|
u_long fr_v4_icmp_pullup;
|
|
u_long fr_v4_badttl; /* TTL in packet doesn't reach minimum */
|
|
u_long fr_v4_badsrc; /* source received doesn't match route */
|
|
u_long fr_l4_badcksum; /* layer 4 header checksum failure */
|
|
u_long fr_badcoalesces;
|
|
u_long fr_pass; /* packets allowed */
|
|
u_long fr_block; /* packets denied */
|
|
u_long fr_nom; /* packets which don't match any rule */
|
|
u_long fr_short; /* packets which are short */
|
|
u_long fr_ppkl; /* packets allowed and logged */
|
|
u_long fr_bpkl; /* packets denied and logged */
|
|
u_long fr_npkl; /* packets unmatched and logged */
|
|
u_long fr_ret; /* packets for which a return is sent */
|
|
u_long fr_acct; /* packets for which counting was performed */
|
|
u_long fr_bnfr; /* bad attempts to allocate fragment state */
|
|
u_long fr_nfr; /* new fragment state kept */
|
|
u_long fr_cfr; /* add new fragment state but complete pkt */
|
|
u_long fr_bads; /* bad attempts to allocate packet state */
|
|
u_long fr_ads; /* new packet state kept */
|
|
u_long fr_chit; /* cached hit */
|
|
u_long fr_cmiss; /* cached miss */
|
|
u_long fr_tcpbad; /* TCP checksum check failures */
|
|
u_long fr_pull[2]; /* good and bad pullup attempts */
|
|
u_long fr_bad; /* bad IP packets to the filter */
|
|
u_long fr_ipv6; /* IPv6 packets in/out */
|
|
u_long fr_ppshit; /* dropped because of pps ceiling */
|
|
u_long fr_ipud; /* IP id update failures */
|
|
u_long fr_blocked[FRB_MAX_VALUE + 1];
|
|
} ipf_statistics_t;
|
|
|
|
/*
|
|
* Log structure. Each packet header logged is prepended by one of these.
|
|
* Following this in the log records read from the device will be an ipflog
|
|
* structure which is then followed by any packet data.
|
|
*/
|
|
typedef struct iplog {
|
|
u_32_t ipl_magic;
|
|
u_int ipl_count;
|
|
u_32_t ipl_seqnum;
|
|
struct timeval ipl_time;
|
|
size_t ipl_dsize;
|
|
struct iplog *ipl_next;
|
|
} iplog_t;
|
|
|
|
#define ipl_sec ipl_time.tv_sec
|
|
#define ipl_usec ipl_time.tv_usec
|
|
|
|
#define IPL_MAGIC 0x49504c4d /* 'IPLM' */
|
|
#define IPL_MAGIC_NAT 0x49504c4e /* 'IPLN' */
|
|
#define IPL_MAGIC_STATE 0x49504c53 /* 'IPLS' */
|
|
#define IPLOG_SIZE sizeof(iplog_t)
|
|
|
|
typedef struct ipflog {
|
|
#if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
|
|
(defined(OpenBSD) && (OpenBSD >= 199603))
|
|
#else
|
|
u_int fl_unit;
|
|
#endif
|
|
u_32_t fl_rule;
|
|
u_32_t fl_flags;
|
|
u_32_t fl_lflags;
|
|
u_32_t fl_logtag;
|
|
ipftag_t fl_nattag;
|
|
u_short fl_plen; /* extra data after hlen */
|
|
u_short fl_loglevel; /* syslog log level */
|
|
char fl_group[FR_GROUPLEN];
|
|
u_char fl_hlen; /* length of IP headers saved */
|
|
u_char fl_dir;
|
|
u_char fl_breason; /* from fin_reason */
|
|
u_char fl_family; /* address family of packet logged */
|
|
char fl_ifname[LIFNAMSIZ];
|
|
} ipflog_t;
|
|
|
|
#ifndef IPF_LOGGING
|
|
# define IPF_LOGGING 0
|
|
#endif
|
|
#ifndef IPF_DEFAULT_PASS
|
|
# define IPF_DEFAULT_PASS FR_PASS
|
|
#endif
|
|
|
|
#define DEFAULT_IPFLOGSIZE 32768
|
|
#ifndef IPFILTER_LOGSIZE
|
|
# define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE
|
|
#else
|
|
# if IPFILTER_LOGSIZE < 8192
|
|
# error IPFILTER_LOGSIZE too small. Must be >= 8192
|
|
# endif
|
|
#endif
|
|
|
|
#define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */
|
|
|
|
/*
|
|
* Device filenames for reading log information. Use ipf on Solaris2 because
|
|
* ipl is already a name used by something else.
|
|
*/
|
|
#ifndef IPL_NAME
|
|
# if SOLARIS
|
|
# define IPL_NAME "/dev/ipf"
|
|
# else
|
|
# define IPL_NAME "/dev/ipl"
|
|
# endif
|
|
#endif
|
|
/*
|
|
* Pathnames for various IP Filter control devices. Used by LKM
|
|
* and userland, so defined here.
|
|
*/
|
|
#define IPNAT_NAME "/dev/ipnat"
|
|
#define IPSTATE_NAME "/dev/ipstate"
|
|
#define IPAUTH_NAME "/dev/ipauth"
|
|
#define IPSYNC_NAME "/dev/ipsync"
|
|
#define IPSCAN_NAME "/dev/ipscan"
|
|
#define IPLOOKUP_NAME "/dev/iplookup"
|
|
|
|
#define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */
|
|
#define IPL_LOGNAT 1
|
|
#define IPL_LOGSTATE 2
|
|
#define IPL_LOGAUTH 3
|
|
#define IPL_LOGSYNC 4
|
|
#define IPL_LOGSCAN 5
|
|
#define IPL_LOGLOOKUP 6
|
|
#define IPL_LOGCOUNT 7
|
|
#define IPL_LOGMAX 7
|
|
#define IPL_LOGSIZE IPL_LOGMAX + 1
|
|
#define IPL_LOGALL -1
|
|
#define IPL_LOGNONE -2
|
|
|
|
/*
|
|
* For SIOCGETFS
|
|
*/
|
|
typedef struct friostat {
|
|
ipf_statistics_t f_st[2];
|
|
frentry_t *f_ipf[2][2];
|
|
frentry_t *f_acct[2][2];
|
|
frentry_t *f_auth;
|
|
struct frgroup *f_groups[IPL_LOGSIZE][2];
|
|
u_long f_froute[2];
|
|
u_long f_log_ok;
|
|
u_long f_log_fail;
|
|
u_long f_rb_no_mem;
|
|
u_long f_rb_node_max;
|
|
u_32_t f_ticks;
|
|
int f_locks[IPL_LOGSIZE];
|
|
int f_defpass; /* default pass - from fr_pass */
|
|
int f_active; /* 1 or 0 - active rule set */
|
|
int f_running; /* 1 if running, else 0 */
|
|
int f_logging; /* 1 if enabled, else 0 */
|
|
int f_features;
|
|
char f_version[32]; /* version string */
|
|
} friostat_t;
|
|
|
|
#define f_fin f_ipf[0]
|
|
#define f_fout f_ipf[1]
|
|
#define f_acctin f_acct[0]
|
|
#define f_acctout f_acct[1]
|
|
|
|
#define IPF_FEAT_LKM 0x001
|
|
#define IPF_FEAT_LOG 0x002
|
|
#define IPF_FEAT_LOOKUP 0x004
|
|
#define IPF_FEAT_BPF 0x008
|
|
#define IPF_FEAT_COMPILED 0x010
|
|
#define IPF_FEAT_CKSUM 0x020
|
|
#define IPF_FEAT_SYNC 0x040
|
|
#define IPF_FEAT_SCAN 0x080
|
|
#define IPF_FEAT_IPV6 0x100
|
|
|
|
typedef struct optlist {
|
|
u_short ol_val;
|
|
int ol_bit;
|
|
} optlist_t;
|
|
|
|
|
|
/*
|
|
* Group list structure.
|
|
*/
|
|
typedef struct frgroup {
|
|
struct frgroup *fg_next;
|
|
struct frentry *fg_head;
|
|
struct frentry *fg_start;
|
|
struct frgroup **fg_set;
|
|
u_32_t fg_flags;
|
|
int fg_ref;
|
|
char fg_name[FR_GROUPLEN];
|
|
} frgroup_t;
|
|
|
|
#define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name)
|
|
|
|
|
|
/*
|
|
* Used by state and NAT tables
|
|
*/
|
|
typedef struct icmpinfo {
|
|
u_short ici_id;
|
|
u_short ici_seq;
|
|
u_char ici_type;
|
|
} icmpinfo_t;
|
|
|
|
typedef struct udpinfo {
|
|
u_short us_sport;
|
|
u_short us_dport;
|
|
} udpinfo_t;
|
|
|
|
|
|
typedef struct tcpdata {
|
|
u_32_t td_end;
|
|
u_32_t td_maxend;
|
|
u_32_t td_maxwin;
|
|
u_32_t td_winscale;
|
|
u_32_t td_maxseg;
|
|
int td_winflags;
|
|
} tcpdata_t;
|
|
|
|
#define TCP_WSCALE_MAX 14
|
|
|
|
#define TCP_WSCALE_SEEN 0x00000001
|
|
#define TCP_WSCALE_FIRST 0x00000002
|
|
#define TCP_SACK_PERMIT 0x00000004
|
|
|
|
|
|
typedef struct tcpinfo {
|
|
u_32_t ts_sport;
|
|
u_32_t ts_dport;
|
|
tcpdata_t ts_data[2];
|
|
} tcpinfo_t;
|
|
|
|
|
|
/*
|
|
* Structures to define a GRE header as seen in a packet.
|
|
*/
|
|
struct grebits {
|
|
#if defined(sparc)
|
|
u_32_t grb_ver:3;
|
|
u_32_t grb_flags:3;
|
|
u_32_t grb_A:1;
|
|
u_32_t grb_recur:1;
|
|
u_32_t grb_s:1;
|
|
u_32_t grb_S:1;
|
|
u_32_t grb_K:1;
|
|
u_32_t grb_R:1;
|
|
u_32_t grb_C:1;
|
|
#else
|
|
u_32_t grb_C:1;
|
|
u_32_t grb_R:1;
|
|
u_32_t grb_K:1;
|
|
u_32_t grb_S:1;
|
|
u_32_t grb_s:1;
|
|
u_32_t grb_recur:1;
|
|
u_32_t grb_A:1;
|
|
u_32_t grb_flags:3;
|
|
u_32_t grb_ver:3;
|
|
#endif
|
|
u_short grb_ptype;
|
|
};
|
|
|
|
typedef struct grehdr {
|
|
union {
|
|
struct grebits gru_bits;
|
|
u_short gru_flags;
|
|
} gr_un;
|
|
u_short gr_len;
|
|
u_short gr_call;
|
|
} grehdr_t;
|
|
|
|
#define gr_flags gr_un.gru_flags
|
|
#define gr_bits gr_un.gru_bits
|
|
#define gr_ptype gr_bits.grb_ptype
|
|
#define gr_C gr_bits.grb_C
|
|
#define gr_R gr_bits.grb_R
|
|
#define gr_K gr_bits.grb_K
|
|
#define gr_S gr_bits.grb_S
|
|
#define gr_s gr_bits.grb_s
|
|
#define gr_recur gr_bits.grb_recur
|
|
#define gr_A gr_bits.grb_A
|
|
#define gr_ver gr_bits.grb_ver
|
|
|
|
/*
|
|
* GRE information tracked by "keep state"
|
|
*/
|
|
typedef struct greinfo {
|
|
u_short gs_call[2];
|
|
u_short gs_flags;
|
|
u_short gs_ptype;
|
|
} greinfo_t;
|
|
|
|
#define GRE_REV(x) ((ntohs(x) >> 13) & 7)
|
|
|
|
|
|
/*
|
|
* Format of an Authentication header
|
|
*/
|
|
typedef struct authhdr {
|
|
u_char ah_next;
|
|
u_char ah_plen;
|
|
u_short ah_reserved;
|
|
u_32_t ah_spi;
|
|
u_32_t ah_seq;
|
|
/* Following the sequence number field is 0 or more bytes of */
|
|
/* authentication data, as specified by ah_plen - RFC 2402. */
|
|
} authhdr_t;
|
|
|
|
|
|
/*
|
|
* Timeout tail queue list member
|
|
*/
|
|
typedef struct ipftqent {
|
|
struct ipftqent **tqe_pnext;
|
|
struct ipftqent *tqe_next;
|
|
struct ipftq *tqe_ifq;
|
|
void *tqe_parent; /* pointer back to NAT/state struct */
|
|
u_32_t tqe_die; /* when this entriy is to die */
|
|
u_32_t tqe_touched;
|
|
int tqe_flags;
|
|
int tqe_state[2]; /* current state of this entry */
|
|
} ipftqent_t;
|
|
|
|
#define TQE_RULEBASED 0x00000001
|
|
#define TQE_DELETE 0x00000002
|
|
|
|
|
|
/*
|
|
* Timeout tail queue head for IPFilter
|
|
*/
|
|
typedef struct ipftq {
|
|
ipfmutex_t ifq_lock;
|
|
u_int ifq_ttl;
|
|
ipftqent_t *ifq_head;
|
|
ipftqent_t **ifq_tail;
|
|
struct ipftq *ifq_next;
|
|
struct ipftq **ifq_pnext;
|
|
int ifq_ref;
|
|
u_int ifq_flags;
|
|
} ipftq_t;
|
|
|
|
#define IFQF_USER 0x01 /* User defined aging */
|
|
#define IFQF_DELETE 0x02 /* Marked for deletion */
|
|
#define IFQF_PROXY 0x04 /* Timeout queue in use by a proxy */
|
|
|
|
#define IPFTQ_INIT(x,y,z) do { \
|
|
(x)->ifq_ttl = (y); \
|
|
(x)->ifq_head = NULL; \
|
|
(x)->ifq_ref = 1; \
|
|
(x)->ifq_tail = &(x)->ifq_head; \
|
|
MUTEX_INIT(&(x)->ifq_lock, (z)); \
|
|
} while (0)
|
|
|
|
#define IPF_HZ_MULT 1
|
|
#define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */
|
|
/* checks its timeout queues. */
|
|
#define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE)
|
|
|
|
typedef int (*ipftq_delete_fn_t)(struct ipf_main_softc_s *, void *);
|
|
|
|
|
|
/*
|
|
* Object structure description. For passing through in ioctls.
|
|
*/
|
|
typedef struct ipfobj {
|
|
u_32_t ipfo_rev; /* IPFilter version number */
|
|
u_32_t ipfo_size; /* size of object at ipfo_ptr */
|
|
void *ipfo_ptr; /* pointer to object */
|
|
int ipfo_type; /* type of object being pointed to */
|
|
int ipfo_offset; /* bytes from ipfo_ptr where to start */
|
|
int ipfo_retval; /* return value */
|
|
u_char ipfo_xxxpad[28]; /* reserved for future use */
|
|
} ipfobj_t;
|
|
|
|
#define IPFOBJ_FRENTRY 0 /* struct frentry */
|
|
#define IPFOBJ_IPFSTAT 1 /* struct friostat */
|
|
#define IPFOBJ_IPFINFO 2 /* struct fr_info */
|
|
#define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */
|
|
#define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */
|
|
#define IPFOBJ_IPNAT 5 /* struct ipnat */
|
|
#define IPFOBJ_NATSTAT 6 /* struct natstat */
|
|
#define IPFOBJ_STATESAVE 7 /* struct ipstate_save */
|
|
#define IPFOBJ_NATSAVE 8 /* struct nat_save */
|
|
#define IPFOBJ_NATLOOKUP 9 /* struct natlookup */
|
|
#define IPFOBJ_IPSTATE 10 /* struct ipstate */
|
|
#define IPFOBJ_STATESTAT 11 /* struct ips_stat */
|
|
#define IPFOBJ_FRAUTH 12 /* struct frauth */
|
|
#define IPFOBJ_TUNEABLE 13 /* struct ipftune */
|
|
#define IPFOBJ_NAT 14 /* struct nat */
|
|
#define IPFOBJ_IPFITER 15 /* struct ipfruleiter */
|
|
#define IPFOBJ_GENITER 16 /* struct ipfgeniter */
|
|
#define IPFOBJ_GTABLE 17 /* struct ipftable */
|
|
#define IPFOBJ_LOOKUPITER 18 /* struct ipflookupiter */
|
|
#define IPFOBJ_STATETQTAB 19 /* struct ipftq * NSTATES */
|
|
#define IPFOBJ_IPFEXPR 20
|
|
#define IPFOBJ_PROXYCTL 21 /* strct ap_ctl */
|
|
#define IPFOBJ_FRIPF 22 /* structfripf */
|
|
#define IPFOBJ_COUNT 23 /* How many #defines are above this? */
|
|
|
|
|
|
typedef union ipftunevalptr {
|
|
void *ipftp_void;
|
|
u_long *ipftp_long;
|
|
u_int *ipftp_int;
|
|
u_short *ipftp_short;
|
|
u_char *ipftp_char;
|
|
u_long ipftp_offset;
|
|
} ipftunevalptr_t;
|
|
|
|
typedef union ipftuneval {
|
|
u_long ipftu_long;
|
|
u_int ipftu_int;
|
|
u_short ipftu_short;
|
|
u_char ipftu_char;
|
|
} ipftuneval_t;
|
|
|
|
struct ipftuneable;
|
|
typedef int (* ipftunefunc_t)(struct ipf_main_softc_s *, struct ipftuneable *,
|
|
ipftuneval_t *);
|
|
|
|
typedef struct ipftuneable {
|
|
ipftunevalptr_t ipft_una;
|
|
const char *ipft_name;
|
|
u_long ipft_min;
|
|
u_long ipft_max;
|
|
int ipft_sz;
|
|
int ipft_flags;
|
|
struct ipftuneable *ipft_next;
|
|
ipftunefunc_t ipft_func;
|
|
} ipftuneable_t;
|
|
|
|
#define ipft_addr ipft_una.ipftp_void
|
|
#define ipft_plong ipft_una.ipftp_long
|
|
#define ipft_pint ipft_una.ipftp_int
|
|
#define ipft_pshort ipft_una.ipftp_short
|
|
#define ipft_pchar ipft_una.ipftp_char
|
|
|
|
#define IPFT_RDONLY 1 /* read-only */
|
|
#define IPFT_WRDISABLED 2 /* write when disabled only */
|
|
|
|
typedef struct ipftune {
|
|
void *ipft_cookie;
|
|
ipftuneval_t ipft_un;
|
|
u_long ipft_min;
|
|
u_long ipft_max;
|
|
int ipft_sz;
|
|
int ipft_flags;
|
|
char ipft_name[80];
|
|
} ipftune_t;
|
|
|
|
#define ipft_vlong ipft_un.ipftu_long
|
|
#define ipft_vint ipft_un.ipftu_int
|
|
#define ipft_vshort ipft_un.ipftu_short
|
|
#define ipft_vchar ipft_un.ipftu_char
|
|
|
|
/*
|
|
* Hash table header
|
|
*/
|
|
#define IPFHASH(x,y) typedef struct { \
|
|
ipfrwlock_t ipfh_lock; \
|
|
struct x *ipfh_head; \
|
|
} y
|
|
|
|
/*
|
|
** HPUX Port
|
|
*/
|
|
#ifdef __hpux
|
|
/* HP-UX locking sequence deadlock detection module lock MAJOR ID */
|
|
# define IPF_SMAJ 0 /* temp assignment XXX, not critical */
|
|
#endif
|
|
|
|
#if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \
|
|
(__FreeBSD_version >= 220000)
|
|
# define CDEV_MAJOR 79
|
|
#endif
|
|
|
|
/*
|
|
* Post NetBSD 1.2 has the PFIL interface for packet filters. This turns
|
|
* on those hooks. We don't need any special mods in non-IP Filter code
|
|
* with this!
|
|
*/
|
|
#if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \
|
|
(defined(NetBSD1_2) && NetBSD1_2 > 1) || \
|
|
(defined(__FreeBSD__) && (__FreeBSD_version >= 500043))
|
|
# if (NetBSD >= 199905) && !defined(PFIL_HOOKS)
|
|
# define PFIL_HOOKS
|
|
# endif
|
|
# ifdef PFIL_HOOKS
|
|
# define NETBSD_PF
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef _KERNEL
|
|
# define FR_VERBOSE(verb_pr)
|
|
# define FR_DEBUG(verb_pr)
|
|
#else
|
|
extern void ipfkdebug(char *, ...);
|
|
extern void ipfkverbose(char *, ...);
|
|
# define FR_VERBOSE(verb_pr) ipfkverbose verb_pr
|
|
# define FR_DEBUG(verb_pr) ipfkdebug verb_pr
|
|
#endif
|
|
|
|
/*
|
|
*
|
|
*/
|
|
typedef struct ipfruleiter {
|
|
int iri_inout;
|
|
char iri_group[FR_GROUPLEN];
|
|
int iri_active;
|
|
int iri_nrules;
|
|
int iri_v; /* No longer used (compatibility) */
|
|
frentry_t *iri_rule;
|
|
} ipfruleiter_t;
|
|
|
|
/*
|
|
* Values for iri_inout
|
|
*/
|
|
#define F_IN 0
|
|
#define F_OUT 1
|
|
#define F_ACIN 2
|
|
#define F_ACOUT 3
|
|
|
|
|
|
typedef struct ipfgeniter {
|
|
int igi_type;
|
|
int igi_nitems;
|
|
void *igi_data;
|
|
} ipfgeniter_t;
|
|
|
|
#define IPFGENITER_IPF 0
|
|
#define IPFGENITER_NAT 1
|
|
#define IPFGENITER_IPNAT 2
|
|
#define IPFGENITER_FRAG 3
|
|
#define IPFGENITER_AUTH 4
|
|
#define IPFGENITER_STATE 5
|
|
#define IPFGENITER_NATFRAG 6
|
|
#define IPFGENITER_HOSTMAP 7
|
|
#define IPFGENITER_LOOKUP 8
|
|
|
|
typedef struct ipftable {
|
|
int ita_type;
|
|
void *ita_table;
|
|
} ipftable_t;
|
|
|
|
#define IPFTABLE_BUCKETS 1
|
|
#define IPFTABLE_BUCKETS_NATIN 2
|
|
#define IPFTABLE_BUCKETS_NATOUT 3
|
|
|
|
|
|
typedef struct ipf_v4_masktab_s {
|
|
u_32_t imt4_active[33];
|
|
int imt4_masks[33];
|
|
int imt4_max;
|
|
} ipf_v4_masktab_t;
|
|
|
|
typedef struct ipf_v6_masktab_s {
|
|
i6addr_t imt6_active[129];
|
|
int imt6_masks[129];
|
|
int imt6_max;
|
|
} ipf_v6_masktab_t;
|
|
|
|
|
|
/*
|
|
*
|
|
*/
|
|
typedef struct ipftoken {
|
|
struct ipftoken *ipt_next;
|
|
struct ipftoken **ipt_pnext;
|
|
void *ipt_ctx;
|
|
void *ipt_data;
|
|
u_long ipt_die;
|
|
int ipt_type;
|
|
int ipt_uid;
|
|
int ipt_subtype;
|
|
int ipt_ref;
|
|
int ipt_complete;
|
|
} ipftoken_t;
|
|
|
|
|
|
/*
|
|
*
|
|
*/
|
|
typedef struct ipfexp {
|
|
int ipfe_cmd;
|
|
int ipfe_not;
|
|
int ipfe_narg;
|
|
int ipfe_size;
|
|
int ipfe_arg0[1];
|
|
} ipfexp_t;
|
|
|
|
/*
|
|
* Currently support commands (ipfe_cmd)
|
|
* 32bits is split up follows:
|
|
* aabbcccc
|
|
* aa = 0 = packet matching, 1 = meta data matching
|
|
* bb = IP protocol number
|
|
* cccc = command
|
|
*/
|
|
#define IPF_EXP_IP_PR 0x00000001
|
|
#define IPF_EXP_IP_ADDR 0x00000002
|
|
#define IPF_EXP_IP_SRCADDR 0x00000003
|
|
#define IPF_EXP_IP_DSTADDR 0x00000004
|
|
#define IPF_EXP_IP6_ADDR 0x00000005
|
|
#define IPF_EXP_IP6_SRCADDR 0x00000006
|
|
#define IPF_EXP_IP6_DSTADDR 0x00000007
|
|
#define IPF_EXP_TCP_FLAGS 0x00060001
|
|
#define IPF_EXP_TCP_PORT 0x00060002
|
|
#define IPF_EXP_TCP_SPORT 0x00060003
|
|
#define IPF_EXP_TCP_DPORT 0x00060004
|
|
#define IPF_EXP_UDP_PORT 0x00110002
|
|
#define IPF_EXP_UDP_SPORT 0x00110003
|
|
#define IPF_EXP_UDP_DPORT 0x00110004
|
|
#define IPF_EXP_IDLE_GT 0x01000001
|
|
#define IPF_EXP_TCP_STATE 0x01060002
|
|
#define IPF_EXP_END 0xffffffff
|
|
|
|
#define ONE_DAY IPF_TTLVAL(1 * 86400) /* 1 day */
|
|
#define FIVE_DAYS (5 * ONE_DAY)
|
|
|
|
typedef struct ipf_main_softc_s {
|
|
struct ipf_main_softc_s *ipf_next;
|
|
ipfmutex_t ipf_rw;
|
|
ipfmutex_t ipf_timeoutlock;
|
|
ipfrwlock_t ipf_mutex;
|
|
ipfrwlock_t ipf_frag;
|
|
ipfrwlock_t ipf_global;
|
|
ipfrwlock_t ipf_tokens;
|
|
ipfrwlock_t ipf_state;
|
|
ipfrwlock_t ipf_nat;
|
|
ipfrwlock_t ipf_natfrag;
|
|
ipfrwlock_t ipf_poolrw;
|
|
int ipf_dynamic_softc;
|
|
int ipf_refcnt;
|
|
int ipf_running;
|
|
int ipf_flags;
|
|
int ipf_active;
|
|
int ipf_control_forwarding;
|
|
int ipf_update_ipid;
|
|
int ipf_chksrc; /* causes a system crash if enabled */
|
|
int ipf_pass;
|
|
int ipf_minttl;
|
|
int ipf_icmpminfragmtu;
|
|
int ipf_interror; /* Should be in a struct that is per */
|
|
/* thread or process. Does not belong */
|
|
/* here but there's a lot more work */
|
|
/* in doing that properly. For now, */
|
|
/* it is squatting. */
|
|
u_int ipf_tcpidletimeout;
|
|
u_int ipf_tcpclosewait;
|
|
u_int ipf_tcplastack;
|
|
u_int ipf_tcptimewait;
|
|
u_int ipf_tcptimeout;
|
|
u_int ipf_tcpsynsent;
|
|
u_int ipf_tcpsynrecv;
|
|
u_int ipf_tcpclosed;
|
|
u_int ipf_tcphalfclosed;
|
|
u_int ipf_udptimeout;
|
|
u_int ipf_udpacktimeout;
|
|
u_int ipf_icmptimeout;
|
|
u_int ipf_icmpacktimeout;
|
|
u_int ipf_iptimeout;
|
|
u_long ipf_ticks;
|
|
u_long ipf_userifqs;
|
|
u_long ipf_rb_no_mem;
|
|
u_long ipf_rb_node_max;
|
|
u_long ipf_frouteok[2];
|
|
ipftuneable_t *ipf_tuners;
|
|
void *ipf_frag_soft;
|
|
void *ipf_nat_soft;
|
|
void *ipf_state_soft;
|
|
void *ipf_auth_soft;
|
|
void *ipf_proxy_soft;
|
|
void *ipf_sync_soft;
|
|
void *ipf_lookup_soft;
|
|
void *ipf_log_soft;
|
|
struct frgroup *ipf_groups[IPL_LOGSIZE][2];
|
|
frentry_t *ipf_rules[2][2];
|
|
frentry_t *ipf_acct[2][2];
|
|
frentry_t *ipf_rule_explist[2];
|
|
ipftoken_t *ipf_token_head;
|
|
ipftoken_t **ipf_token_tail;
|
|
#if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000) && \
|
|
defined(_KERNEL)
|
|
struct callout_handle ipf_slow_ch;
|
|
#endif
|
|
#if defined(linux) && defined(_KERNEL)
|
|
struct timer_list ipf_timer;
|
|
#endif
|
|
#if NETBSD_GE_REV(104040000)
|
|
struct callout ipf_slow_ch;
|
|
#endif
|
|
#if SOLARIS
|
|
# if SOLARIS2 >= 7
|
|
timeout_id_t ipf_slow_ch;
|
|
# else
|
|
int ipf_slow_ch;
|
|
# endif
|
|
#endif
|
|
#if defined(_KERNEL)
|
|
# if SOLARIS
|
|
struct pollhead ipf_poll_head[IPL_LOGSIZE];
|
|
void *ipf_dip;
|
|
# if defined(INSTANCES)
|
|
int ipf_get_loopback;
|
|
u_long ipf_idnum;
|
|
net_handle_t ipf_nd_v4;
|
|
net_handle_t ipf_nd_v6;
|
|
hook_t *ipf_hk_v4_in;
|
|
hook_t *ipf_hk_v4_out;
|
|
hook_t *ipf_hk_v4_nic;
|
|
hook_t *ipf_hk_v6_in;
|
|
hook_t *ipf_hk_v6_out;
|
|
hook_t *ipf_hk_v6_nic;
|
|
hook_t *ipf_hk_loop_v4_in;
|
|
hook_t *ipf_hk_loop_v4_out;
|
|
hook_t *ipf_hk_loop_v6_in;
|
|
hook_t *ipf_hk_loop_v6_out;
|
|
# endif
|
|
# else
|
|
# if defined(linux) && defined(_KERNEL)
|
|
struct poll_table_struct ipf_selwait[IPL_LOGSIZE];
|
|
wait_queue_head_t iplh_linux[IPL_LOGSIZE];
|
|
# else
|
|
struct selinfo ipf_selwait[IPL_LOGSIZE];
|
|
# endif
|
|
# endif
|
|
#endif
|
|
void *ipf_slow;
|
|
ipf_statistics_t ipf_stats[2];
|
|
u_char ipf_iss_secret[32];
|
|
u_short ipf_ip_id;
|
|
} ipf_main_softc_t;
|
|
|
|
#define IPFERROR(_e) do { softc->ipf_interror = (_e); \
|
|
DT1(user_error, int, _e); \
|
|
} while (0)
|
|
|
|
#ifndef _KERNEL
|
|
extern int ipf_check(void *, struct ip *, int, void *, int, mb_t **);
|
|
extern int (*ipf_checkp)(ip_t *, int, void *, int, mb_t **);
|
|
extern struct ifnet *get_unit(char *, int);
|
|
extern char *get_ifname(struct ifnet *);
|
|
extern int ipfioctl(ipf_main_softc_t *, int, ioctlcmd_t,
|
|
void *, int);
|
|
extern void m_freem(mb_t *);
|
|
extern size_t msgdsize(mb_t *);
|
|
extern int bcopywrap(void *, void *, size_t);
|
|
#else /* #ifndef _KERNEL */
|
|
# if defined(__NetBSD__) && defined(PFIL_HOOKS)
|
|
extern void ipfilterattach(int);
|
|
# endif
|
|
extern int ipl_enable(void);
|
|
extern int ipl_disable(void);
|
|
# ifdef MENTAT
|
|
extern int ipf_check(void *, struct ip *, int, void *, int, void *,
|
|
mblk_t **);
|
|
# if SOLARIS
|
|
extern void ipf_prependmbt(fr_info_t *, mblk_t *);
|
|
# if SOLARIS2 >= 7
|
|
extern int ipfioctl(dev_t, int, intptr_t, int, cred_t *, int *);
|
|
# else
|
|
extern int ipfioctl(dev_t, int, int *, int, cred_t *, int *);
|
|
# endif
|
|
# endif
|
|
# ifdef __hpux
|
|
extern int ipfioctl(dev_t, int, caddr_t, int);
|
|
extern int ipf_select(dev_t, int);
|
|
# endif
|
|
extern int ipf_qout(queue_t *, mblk_t *);
|
|
# else /* MENTAT */
|
|
extern int ipf_check(void *, struct ip *, int, void *, int, mb_t **);
|
|
extern int (*fr_checkp)(ip_t *, int, void *, int, mb_t **);
|
|
extern size_t mbufchainlen(mb_t *);
|
|
# ifdef __sgi
|
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# include <sys/cred.h>
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extern int ipfioctl(dev_t, int, caddr_t, int, cred_t *, int *);
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extern int ipfilter_sgi_attach(void);
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extern void ipfilter_sgi_detach(void);
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|
extern void ipfilter_sgi_intfsync(void);
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|
# else
|
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# ifdef IPFILTER_LKM
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extern int ipf_identify(char *);
|
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# endif
|
|
# if BSDOS_GE_REV(199510) || FREEBSD_GE_REV(220000) || \
|
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(defined(NetBSD) && (NetBSD >= 199511)) || defined(__OpenBSD__)
|
|
# if defined(__NetBSD__) || BSDOS_GE_REV(199701) || \
|
|
defined(__OpenBSD__) || FREEBSD_GE_REV(300000)
|
|
# if (__FreeBSD_version >= 500024)
|
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# if (__FreeBSD_version >= 502116)
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|
extern int ipfioctl(struct cdev*, u_long, caddr_t, int, struct thread *);
|
|
# else
|
|
extern int ipfioctl(dev_t, u_long, caddr_t, int, struct thread *);
|
|
# endif /* __FreeBSD_version >= 502116 */
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|
# else
|
|
# if NETBSD_GE_REV(499001000)
|
|
extern int ipfioctl(dev_t, u_long, void *, int, struct lwp *);
|
|
# else
|
|
# if NETBSD_GE_REV(399001400)
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|
extern int ipfioctl(dev_t, u_long, caddr_t, int, struct lwp *);
|
|
# else
|
|
extern int ipfioctl(dev_t, u_long, caddr_t, int, struct proc *);
|
|
# endif
|
|
# endif
|
|
# endif /* __FreeBSD_version >= 500024 */
|
|
# else
|
|
extern int ipfioctl(dev_t, int, caddr_t, int, struct proc *);
|
|
# endif
|
|
# else
|
|
# ifdef linux
|
|
extern int ipfioctl(struct inode *, struct file *, u_int, u_long);
|
|
# else
|
|
extern int ipfioctl(dev_t, int, caddr_t, int);
|
|
# endif
|
|
# endif /* (_BSDI_VERSION >= 199510) */
|
|
# endif /* __ sgi */
|
|
# endif /* MENTAT */
|
|
|
|
# if defined(__FreeBSD_version)
|
|
extern int ipf_pfil_hook(void);
|
|
extern int ipf_pfil_unhook(void);
|
|
extern void ipf_event_reg(void);
|
|
extern void ipf_event_dereg(void);
|
|
# endif
|
|
|
|
# if defined(INSTANCES)
|
|
extern ipf_main_softc_t *ipf_find_softc(u_long);
|
|
extern int ipf_set_loopback(ipf_main_softc_t *, ipftuneable_t *,
|
|
ipftuneval_t *);
|
|
# endif
|
|
|
|
#endif /* #ifndef _KERNEL */
|
|
|
|
extern char *memstr(const char *, char *, size_t, size_t);
|
|
extern int count4bits(u_32_t);
|
|
#ifdef USE_INET6
|
|
extern int count6bits(u_32_t *);
|
|
#endif
|
|
extern int frrequest(ipf_main_softc_t *, int, ioctlcmd_t, void *,
|
|
int, int);
|
|
extern char *getifname(struct ifnet *);
|
|
extern int ipfattach(ipf_main_softc_t *);
|
|
extern int ipfdetach(ipf_main_softc_t *);
|
|
extern u_short ipf_cksum(u_short *, int);
|
|
extern int copyinptr(ipf_main_softc_t *, void *, void *, size_t);
|
|
extern int copyoutptr(ipf_main_softc_t *, void *, void *, size_t);
|
|
extern int ipf_fastroute(mb_t *, mb_t **, fr_info_t *, frdest_t *);
|
|
extern int ipf_inject(fr_info_t *, mb_t *);
|
|
extern int ipf_inobj(ipf_main_softc_t *, void *, ipfobj_t *,
|
|
void *, int);
|
|
extern int ipf_inobjsz(ipf_main_softc_t *, void *, void *,
|
|
int , int);
|
|
extern int ipf_ioctlswitch(ipf_main_softc_t *, int, void *,
|
|
ioctlcmd_t, int, int, void *);
|
|
extern int ipf_ipf_ioctl(ipf_main_softc_t *, void *, ioctlcmd_t,
|
|
int, int, void *);
|
|
extern int ipf_ipftune(ipf_main_softc_t *, ioctlcmd_t, void *);
|
|
extern int ipf_matcharray_load(ipf_main_softc_t *, void *,
|
|
ipfobj_t *, int **);
|
|
extern int ipf_matcharray_verify(int *, int);
|
|
extern int ipf_outobj(ipf_main_softc_t *, void *, void *, int);
|
|
extern int ipf_outobjk(ipf_main_softc_t *, ipfobj_t *, void *);
|
|
extern int ipf_outobjsz(ipf_main_softc_t *, void *, void *,
|
|
int, int);
|
|
extern void *ipf_pullup(mb_t *, fr_info_t *, int);
|
|
extern int ipf_resolvedest(ipf_main_softc_t *, char *,
|
|
struct frdest *, int);
|
|
extern int ipf_resolvefunc(ipf_main_softc_t *, void *);
|
|
extern void *ipf_resolvenic(ipf_main_softc_t *, char *, int);
|
|
extern int ipf_send_icmp_err(int, fr_info_t *, int);
|
|
extern int ipf_send_reset(fr_info_t *);
|
|
#if (defined(__FreeBSD_version) && (__FreeBSD_version < 501000)) || \
|
|
!defined(_KERNEL) || defined(linux)
|
|
extern int ppsratecheck(struct timeval *, int *, int);
|
|
#endif
|
|
extern void ipf_apply_timeout(ipftq_t *, u_int);
|
|
extern ipftq_t *ipf_addtimeoutqueue(ipf_main_softc_t *, ipftq_t **,
|
|
u_int);
|
|
extern void ipf_deletequeueentry(ipftqent_t *);
|
|
extern int ipf_deletetimeoutqueue(ipftq_t *);
|
|
extern void ipf_freetimeoutqueue(ipf_main_softc_t *, ipftq_t *);
|
|
extern void ipf_movequeue(u_long, ipftqent_t *, ipftq_t *,
|
|
ipftq_t *);
|
|
extern void ipf_queueappend(u_long, ipftqent_t *, ipftq_t *, void *);
|
|
extern void ipf_queueback(u_long, ipftqent_t *);
|
|
extern int ipf_queueflush(ipf_main_softc_t *, ipftq_delete_fn_t,
|
|
ipftq_t *, ipftq_t *, u_int *, int, int);
|
|
extern void ipf_queuefront(ipftqent_t *);
|
|
extern int ipf_settimeout_tcp(ipftuneable_t *, ipftuneval_t *,
|
|
ipftq_t *);
|
|
extern int ipf_checkv4sum(fr_info_t *);
|
|
extern int ipf_checkl4sum(fr_info_t *);
|
|
extern int ipf_ifpfillv4addr(int, struct sockaddr_in *,
|
|
struct sockaddr_in *, struct in_addr *,
|
|
struct in_addr *);
|
|
extern int ipf_coalesce(fr_info_t *);
|
|
#ifdef USE_INET6
|
|
extern int ipf_checkv6sum(fr_info_t *);
|
|
extern int ipf_ifpfillv6addr(int, struct sockaddr_in6 *,
|
|
struct sockaddr_in6 *, i6addr_t *,
|
|
i6addr_t *);
|
|
#endif
|
|
|
|
extern int ipf_tune_add(ipf_main_softc_t *, ipftuneable_t *);
|
|
extern int ipf_tune_add_array(ipf_main_softc_t *, ipftuneable_t *);
|
|
extern int ipf_tune_del(ipf_main_softc_t *, ipftuneable_t *);
|
|
extern int ipf_tune_del_array(ipf_main_softc_t *, ipftuneable_t *);
|
|
extern int ipf_tune_array_link(ipf_main_softc_t *, ipftuneable_t *);
|
|
extern int ipf_tune_array_unlink(ipf_main_softc_t *,
|
|
ipftuneable_t *);
|
|
extern ipftuneable_t *ipf_tune_array_copy(void *, size_t,
|
|
const ipftuneable_t *);
|
|
|
|
extern int ipf_pr_pullup(fr_info_t *, int);
|
|
|
|
extern int ipf_flush(ipf_main_softc_t *, minor_t, int);
|
|
extern frgroup_t *ipf_group_add(ipf_main_softc_t *, char *, void *,
|
|
u_32_t, minor_t, int);
|
|
extern void ipf_group_del(ipf_main_softc_t *, frgroup_t *, frentry_t *);
|
|
extern int ipf_derefrule(ipf_main_softc_t *, frentry_t **);
|
|
extern frgroup_t *ipf_findgroup(ipf_main_softc_t *, char *, minor_t,
|
|
int, frgroup_t ***);
|
|
|
|
extern int ipf_log_init(void);
|
|
extern int ipf_log_bytesused(ipf_main_softc_t *, int);
|
|
extern int ipf_log_canread(ipf_main_softc_t *, int);
|
|
extern int ipf_log_clear(ipf_main_softc_t *, minor_t);
|
|
extern u_long ipf_log_failures(ipf_main_softc_t *, int);
|
|
extern int ipf_log_read(ipf_main_softc_t *, minor_t, uio_t *);
|
|
extern int ipf_log_items(ipf_main_softc_t *, int, fr_info_t *,
|
|
void **, size_t *, int *, int);
|
|
extern u_long ipf_log_logok(ipf_main_softc_t *, int);
|
|
extern void ipf_log_unload(ipf_main_softc_t *);
|
|
extern int ipf_log_pkt(fr_info_t *, u_int);
|
|
extern int ipf_log_pkt(fr_info_t *, u_int);
|
|
|
|
extern frentry_t *ipf_acctpkt(fr_info_t *, u_32_t *);
|
|
extern u_short fr_cksum(fr_info_t *, ip_t *, int, void *);
|
|
extern void ipf_deinitialise(ipf_main_softc_t *);
|
|
extern int ipf_deliverlocal(ipf_main_softc_t *, int, void *,
|
|
i6addr_t *);
|
|
extern frentry_t *ipf_dstgrpmap(fr_info_t *, u_32_t *);
|
|
extern void ipf_fixskip(frentry_t **, frentry_t *, int);
|
|
extern void ipf_forgetifp(ipf_main_softc_t *, void *);
|
|
extern frentry_t *ipf_getrulen(ipf_main_softc_t *, int, char *,
|
|
u_32_t);
|
|
extern int ipf_ifpaddr(ipf_main_softc_t *, int, int, void *,
|
|
i6addr_t *, i6addr_t *);
|
|
extern int ipf_initialise(void);
|
|
extern int ipf_lock(void *, int *);
|
|
extern int ipf_makefrip(int, ip_t *, fr_info_t *);
|
|
extern void ipf_inet_mask_add(int, ipf_v4_masktab_t *);
|
|
extern void ipf_inet_mask_del(int, ipf_v4_masktab_t *);
|
|
#ifdef USE_INET6
|
|
extern void ipf_inet6_mask_add(int, i6addr_t *, ipf_v6_masktab_t *);
|
|
extern void ipf_inet6_mask_del(int, i6addr_t *, ipf_v6_masktab_t *);
|
|
#endif
|
|
extern int ipf_matchtag(ipftag_t *, ipftag_t *);
|
|
extern int ipf_matchicmpqueryreply(int, icmpinfo_t *,
|
|
struct icmp *, int);
|
|
extern u_32_t ipf_newisn(fr_info_t *);
|
|
extern u_short ipf_nextipid(fr_info_t *);
|
|
extern u_int ipf_pcksum(fr_info_t *, int, u_int);
|
|
extern void ipf_rule_expire(ipf_main_softc_t *);
|
|
extern int ipf_scanlist(fr_info_t *, u_32_t);
|
|
extern frentry_t *ipf_srcgrpmap(fr_info_t *, u_32_t *);
|
|
extern int ipf_tcpudpchk(fr_ip_t *, frtuc_t *);
|
|
extern int ipf_verifysrc(fr_info_t *fin);
|
|
extern int ipf_zerostats(ipf_main_softc_t *, void *);
|
|
extern int ipf_getnextrule(ipf_main_softc_t *, ipftoken_t *,
|
|
void *);
|
|
extern int ipf_sync(ipf_main_softc_t *, void *);
|
|
extern int ipf_token_deref(ipf_main_softc_t *, ipftoken_t *);
|
|
extern void ipf_token_expire(ipf_main_softc_t *);
|
|
extern ipftoken_t *ipf_token_find(ipf_main_softc_t *, int, int,
|
|
void *);
|
|
extern void ipf_token_free(ipf_main_softc_t *, ipftoken_t *);
|
|
extern int ipf_token_del(ipf_main_softc_t *, int, int,
|
|
void *);
|
|
extern void ipf_token_mark_complete(ipftoken_t *);
|
|
extern int ipf_genericiter(ipf_main_softc_t *, void *,
|
|
int, void *);
|
|
#ifdef IPFILTER_LOOKUP
|
|
extern void *ipf_resolvelookup(int, u_int, u_int,
|
|
lookupfunc_t *);
|
|
#endif
|
|
extern u_32_t ipf_random(void);
|
|
|
|
extern int ipf_main_load(void);
|
|
extern void *ipf_main_soft_create(void *);
|
|
extern void ipf_main_soft_destroy(ipf_main_softc_t *);
|
|
extern int ipf_main_soft_init(ipf_main_softc_t *);
|
|
extern int ipf_main_soft_fini(ipf_main_softc_t *);
|
|
extern int ipf_main_unload(void);
|
|
extern int ipf_load_all(void);
|
|
extern int ipf_unload_all(void);
|
|
extern void ipf_destroy_all(ipf_main_softc_t *);
|
|
extern ipf_main_softc_t *ipf_create_all(void *);
|
|
extern int ipf_init_all(ipf_main_softc_t *);
|
|
extern int ipf_fini_all(ipf_main_softc_t *);
|
|
extern void ipf_log_soft_destroy(ipf_main_softc_t *, void *);
|
|
extern void *ipf_log_soft_create(ipf_main_softc_t *);
|
|
extern int ipf_log_soft_init(ipf_main_softc_t *, void *);
|
|
extern int ipf_log_soft_fini(ipf_main_softc_t *, void *);
|
|
extern int ipf_log_main_load(void);
|
|
extern int ipf_log_main_unload(void);
|
|
|
|
|
|
extern char ipfilter_version[];
|
|
#ifdef USE_INET6
|
|
extern int icmptoicmp6types[ICMP_MAXTYPE+1];
|
|
extern int icmptoicmp6unreach[ICMP_MAX_UNREACH];
|
|
extern int icmpreplytype6[ICMP6_MAXTYPE + 1];
|
|
#endif
|
|
#ifdef IPFILTER_COMPAT
|
|
extern int ipf_in_compat(ipf_main_softc_t *, ipfobj_t *, void *,int);
|
|
extern int ipf_out_compat(ipf_main_softc_t *, ipfobj_t *, void *);
|
|
#endif
|
|
extern int icmpreplytype4[ICMP_MAXTYPE + 1];
|
|
|
|
extern int ipf_ht_node_add(ipf_main_softc_t *, host_track_t *,
|
|
int, i6addr_t *);
|
|
extern int ipf_ht_node_del(host_track_t *, int, i6addr_t *);
|
|
extern void ipf_rb_ht_flush(host_track_t *);
|
|
extern void ipf_rb_ht_freenode(host_node_t *, void *);
|
|
extern void ipf_rb_ht_init(host_track_t *);
|
|
|
|
#endif /* _NETINET_IP_FIL_H_ */
|