834 lines
18 KiB
C
834 lines
18 KiB
C
/* $FreeBSD$ */
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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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* Added redirect stuff and a variety of bug fixes. (mcn@EnGarde.com)
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*/
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#include <stdio.h>
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#include <string.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/types.h>
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#if !defined(__SVR4)
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#include <strings.h>
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#else
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#include <sys/byteorder.h>
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#endif
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#include <sys/time.h>
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#include <sys/param.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stddef.h>
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#include <sys/file.h>
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#define _KERNEL
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#include <sys/uio.h>
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#undef _KERNEL
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#if defined(sun) && defined(__SVR4)
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# include <sys/ioccom.h>
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# include <sys/sysmacros.h>
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#endif
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/tcp.h>
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#include <net/if.h>
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#include <netdb.h>
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#include <arpa/nameser.h>
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#include <arpa/inet.h>
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#include <resolv.h>
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#include <ctype.h>
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# include <nlist.h>
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#include "ipf.h"
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#include "netinet/ipl.h"
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#include "kmem.h"
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# define STRERROR(x) strerror(x)
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#if !defined(lint)
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static const char sccsid[] ="@(#)ipnat.c 1.9 6/5/96 (C) 1993 Darren Reed";
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static const char rcsid[] = "@(#)$Id$";
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#endif
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#if SOLARIS
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#define bzero(a,b) memset(a,0,b)
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#endif
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int use_inet6 = 0;
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extern char *optarg;
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void dostats(int, natstat_t *, int, int, int *);
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void dotable(natstat_t *, int, int, int, char *);
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void flushtable(int, int, int *);
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void usage(char *);
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int main(int, char*[]);
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void showhostmap(natstat_t *nsp);
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void natstat_dead(natstat_t *, char *);
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void dostats_live(int, natstat_t *, int, int *);
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void showhostmap_dead(natstat_t *);
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void showhostmap_live(int, natstat_t *);
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void dostats_dead(natstat_t *, int, int *);
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int nat_matcharray(nat_t *, int *);
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int opts;
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int nohdrfields = 0;
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wordtab_t *nat_fields = NULL;
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void
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usage(char *name)
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{
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fprintf(stderr, "Usage: %s [-CFhlnrRsv] [-f filename]\n", name);
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exit(1);
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}
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int
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main(int argc, char *argv[])
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{
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int fd, c, mode, *natfilter;
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char *file, *core, *kernel;
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natstat_t ns, *nsp;
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ipfobj_t obj;
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fd = -1;
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opts = 0;
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nsp = &ns;
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file = NULL;
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core = NULL;
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kernel = NULL;
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mode = O_RDWR;
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natfilter = NULL;
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assigndefined(getenv("IPNAT_PREDEFINED"));
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while ((c = getopt(argc, argv, "CdFf:hlm:M:N:nO:prRsv")) != -1)
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switch (c)
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{
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case 'C' :
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opts |= OPT_CLEAR;
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break;
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case 'd' :
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opts |= OPT_DEBUG;
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break;
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case 'f' :
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file = optarg;
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break;
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case 'F' :
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opts |= OPT_FLUSH;
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break;
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case 'h' :
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opts |=OPT_HITS;
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break;
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case 'l' :
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opts |= OPT_LIST;
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mode = O_RDONLY;
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break;
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case 'm' :
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natfilter = parseipfexpr(optarg, NULL);
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break;
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case 'M' :
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core = optarg;
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break;
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case 'N' :
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kernel = optarg;
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break;
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case 'n' :
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opts |= OPT_DONOTHING|OPT_DONTOPEN;
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mode = O_RDONLY;
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break;
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case 'O' :
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nat_fields = parsefields(natfields, optarg);
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break;
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case 'p' :
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opts |= OPT_PURGE;
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break;
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case 'R' :
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opts |= OPT_NORESOLVE;
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break;
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case 'r' :
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opts |= OPT_REMOVE;
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break;
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case 's' :
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opts |= OPT_STAT;
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mode = O_RDONLY;
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break;
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case 'v' :
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opts |= OPT_VERBOSE;
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break;
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default :
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usage(argv[0]);
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}
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if (((opts & OPT_PURGE) != 0) && ((opts & OPT_REMOVE) == 0)) {
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(void) fprintf(stderr, "%s: -p must be used with -r\n",
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argv[0]);
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exit(1);
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}
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initparse();
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if ((kernel != NULL) || (core != NULL)) {
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(void) setgid(getgid());
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(void) setuid(getuid());
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}
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if (!(opts & OPT_DONOTHING)) {
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if (((fd = open(IPNAT_NAME, mode)) == -1) &&
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((fd = open(IPNAT_NAME, O_RDONLY)) == -1)) {
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(void) fprintf(stderr, "%s: open: %s\n", IPNAT_NAME,
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STRERROR(errno));
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exit(1);
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}
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}
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bzero((char *)&ns, sizeof(ns));
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if ((opts & OPT_DONOTHING) == 0) {
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if (checkrev(IPL_NAME) == -1) {
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fprintf(stderr, "User/kernel version check failed\n");
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exit(1);
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}
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}
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if (!(opts & OPT_DONOTHING) && (kernel == NULL) && (core == NULL)) {
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bzero((char *)&obj, sizeof(obj));
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obj.ipfo_rev = IPFILTER_VERSION;
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obj.ipfo_type = IPFOBJ_NATSTAT;
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obj.ipfo_size = sizeof(*nsp);
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obj.ipfo_ptr = (void *)nsp;
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if (ioctl(fd, SIOCGNATS, &obj) == -1) {
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ipferror(fd, "ioctl(SIOCGNATS)");
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exit(1);
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}
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(void) setgid(getgid());
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(void) setuid(getuid());
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} else if ((kernel != NULL) || (core != NULL)) {
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if (openkmem(kernel, core) == -1)
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exit(1);
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natstat_dead(nsp, kernel);
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if (opts & (OPT_LIST|OPT_STAT))
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dostats(fd, nsp, opts, 0, natfilter);
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exit(0);
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}
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if (opts & (OPT_FLUSH|OPT_CLEAR))
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flushtable(fd, opts, natfilter);
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if (file) {
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return(ipnat_parsefile(fd, ipnat_addrule, ioctl, file));
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}
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if (opts & (OPT_LIST|OPT_STAT))
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dostats(fd, nsp, opts, 1, natfilter);
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return(0);
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}
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/*
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* Read NAT statistic information in using a symbol table and memory file
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* rather than doing ioctl's.
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*/
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void
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natstat_dead(natstat_t *nsp, char *kernel)
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{
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struct nlist nat_nlist[10] = {
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{ "nat_table" }, /* 0 */
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{ "nat_list" },
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{ "maptable" },
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{ "ipf_nattable_sz" },
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{ "ipf_natrules_sz" },
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{ "ipf_rdrrules_sz" }, /* 5 */
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{ "ipf_hostmap_sz" },
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{ "nat_instances" },
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{ NULL }
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};
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void *tables[2];
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if (nlist(kernel, nat_nlist) == -1) {
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fprintf(stderr, "nlist error\n");
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return;
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}
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/*
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* Normally the ioctl copies all of these values into the structure
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* for us, before returning it to userland, so here we must copy each
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* one in individually.
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*/
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kmemcpy((char *)&tables, nat_nlist[0].n_value, sizeof(tables));
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nsp->ns_side[0].ns_table = tables[0];
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nsp->ns_side[1].ns_table = tables[1];
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kmemcpy((char *)&nsp->ns_list, nat_nlist[1].n_value,
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sizeof(nsp->ns_list));
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kmemcpy((char *)&nsp->ns_maptable, nat_nlist[2].n_value,
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sizeof(nsp->ns_maptable));
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kmemcpy((char *)&nsp->ns_nattab_sz, nat_nlist[3].n_value,
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sizeof(nsp->ns_nattab_sz));
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kmemcpy((char *)&nsp->ns_rultab_sz, nat_nlist[4].n_value,
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sizeof(nsp->ns_rultab_sz));
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kmemcpy((char *)&nsp->ns_rdrtab_sz, nat_nlist[5].n_value,
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sizeof(nsp->ns_rdrtab_sz));
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kmemcpy((char *)&nsp->ns_hostmap_sz, nat_nlist[6].n_value,
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sizeof(nsp->ns_hostmap_sz));
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kmemcpy((char *)&nsp->ns_instances, nat_nlist[7].n_value,
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sizeof(nsp->ns_instances));
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}
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/*
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* Issue an ioctl to flush either the NAT rules table or the active mapping
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* table or both.
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*/
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void
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flushtable(int fd, int opts, int *match)
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{
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int n = 0;
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if (opts & OPT_FLUSH) {
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n = 0;
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if (!(opts & OPT_DONOTHING)) {
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if (match != NULL) {
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ipfobj_t obj;
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obj.ipfo_rev = IPFILTER_VERSION;
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obj.ipfo_size = match[0] * sizeof(int);
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obj.ipfo_type = IPFOBJ_IPFEXPR;
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obj.ipfo_ptr = match;
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if (ioctl(fd, SIOCMATCHFLUSH, &obj) == -1) {
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ipferror(fd, "ioctl(SIOCMATCHFLUSH)");
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n = -1;
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} else {
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n = obj.ipfo_retval;
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}
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} else if (ioctl(fd, SIOCIPFFL, &n) == -1) {
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ipferror(fd, "ioctl(SIOCIPFFL)");
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n = -1;
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}
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}
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if (n >= 0)
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printf("%d entries flushed from NAT table\n", n);
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}
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if (opts & OPT_CLEAR) {
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n = 1;
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if (!(opts & OPT_DONOTHING) && ioctl(fd, SIOCIPFFL, &n) == -1)
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ipferror(fd, "ioctl(SIOCCNATL)");
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else
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printf("%d entries flushed from NAT list\n", n);
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}
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}
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/*
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* Display NAT statistics.
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*/
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void
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dostats_dead(natstat_t *nsp, int opts, int *filter)
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{
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nat_t *np, nat;
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ipnat_t ipn;
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int i;
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if (nat_fields == NULL) {
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printf("List of active MAP/Redirect filters:\n");
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while (nsp->ns_list) {
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if (kmemcpy((char *)&ipn, (long)nsp->ns_list,
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sizeof(ipn))) {
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perror("kmemcpy");
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break;
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}
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if (opts & OPT_HITS)
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printf("%lu ", ipn.in_hits);
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printnat(&ipn, opts & (OPT_DEBUG|OPT_VERBOSE));
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nsp->ns_list = ipn.in_next;
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}
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}
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if (nat_fields == NULL) {
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printf("\nList of active sessions:\n");
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} else if (nohdrfields == 0) {
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for (i = 0; nat_fields[i].w_value != 0; i++) {
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printfieldhdr(natfields, nat_fields + i);
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if (nat_fields[i + 1].w_value != 0)
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printf("\t");
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}
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printf("\n");
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}
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for (np = nsp->ns_instances; np; np = nat.nat_next) {
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if (kmemcpy((char *)&nat, (long)np, sizeof(nat)))
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break;
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if ((filter != NULL) && (nat_matcharray(&nat, filter) == 0))
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continue;
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if (nat_fields != NULL) {
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for (i = 0; nat_fields[i].w_value != 0; i++) {
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printnatfield(&nat, nat_fields[i].w_value);
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if (nat_fields[i + 1].w_value != 0)
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printf("\t");
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}
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printf("\n");
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} else {
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printactivenat(&nat, opts, nsp->ns_ticks);
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if (nat.nat_aps) {
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int proto;
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if (nat.nat_dir & NAT_OUTBOUND)
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proto = nat.nat_pr[1];
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else
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proto = nat.nat_pr[0];
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printaps(nat.nat_aps, opts, proto);
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}
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}
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}
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if (opts & OPT_VERBOSE)
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showhostmap_dead(nsp);
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}
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void
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dotable(natstat_t *nsp, int fd, int alive, int which, char *side)
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{
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int sz, i, used, maxlen, minlen, totallen;
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ipftable_t table;
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u_int *buckets;
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ipfobj_t obj;
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sz = sizeof(*buckets) * nsp->ns_nattab_sz;
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buckets = (u_int *)malloc(sz);
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if (buckets == NULL) {
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fprintf(stderr,
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"cannot allocate memory (%d) for buckets\n", sz);
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return;
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}
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obj.ipfo_rev = IPFILTER_VERSION;
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obj.ipfo_type = IPFOBJ_GTABLE;
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obj.ipfo_size = sizeof(table);
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obj.ipfo_ptr = &table;
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if (which == 0) {
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table.ita_type = IPFTABLE_BUCKETS_NATIN;
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} else if (which == 1) {
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table.ita_type = IPFTABLE_BUCKETS_NATOUT;
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}
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table.ita_table = buckets;
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if (alive) {
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if (ioctl(fd, SIOCGTABL, &obj) != 0) {
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ipferror(fd, "SIOCFTABL");
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free(buckets);
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return;
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}
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} else {
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if (kmemcpy((char *)buckets, (u_long)nsp->ns_nattab_sz, sz)) {
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free(buckets);
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return;
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}
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}
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minlen = nsp->ns_side[which].ns_inuse;
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totallen = 0;
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maxlen = 0;
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used = 0;
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for (i = 0; i < nsp->ns_nattab_sz; i++) {
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if (buckets[i] > maxlen)
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maxlen = buckets[i];
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if (buckets[i] < minlen)
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minlen = buckets[i];
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if (buckets[i] != 0)
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used++;
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totallen += buckets[i];
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}
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printf("%d%%\thash efficiency %s\n",
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totallen ? used * 100 / totallen : 0, side);
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printf("%2.2f%%\tbucket usage %s\n",
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((float)used / nsp->ns_nattab_sz) * 100.0, side);
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printf("%d\tminimal length %s\n", minlen, side);
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printf("%d\tmaximal length %s\n", maxlen, side);
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printf("%.3f\taverage length %s\n",
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used ? ((float)totallen / used) : 0.0, side);
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free(buckets);
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}
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void
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dostats(int fd, natstat_t *nsp, int opts, int alive, int *filter)
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{
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/*
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* Show statistics ?
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*/
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if (opts & OPT_STAT) {
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printnatside("in", &nsp->ns_side[0]);
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dotable(nsp, fd, alive, 0, "in");
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printnatside("out", &nsp->ns_side[1]);
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dotable(nsp, fd, alive, 1, "out");
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printf("%lu\tlog successes\n", nsp->ns_side[0].ns_log);
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printf("%lu\tlog failures\n", nsp->ns_side[1].ns_log);
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printf("%lu\tadded in\n%lu\tadded out\n",
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nsp->ns_side[0].ns_added,
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nsp->ns_side[1].ns_added);
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printf("%u\tactive\n", nsp->ns_active);
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printf("%lu\ttransparent adds\n", nsp->ns_addtrpnt);
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printf("%lu\tdivert build\n", nsp->ns_divert_build);
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printf("%lu\texpired\n", nsp->ns_expire);
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printf("%lu\tflush all\n", nsp->ns_flush_all);
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printf("%lu\tflush closing\n", nsp->ns_flush_closing);
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printf("%lu\tflush queue\n", nsp->ns_flush_queue);
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printf("%lu\tflush state\n", nsp->ns_flush_state);
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printf("%lu\tflush timeout\n", nsp->ns_flush_timeout);
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printf("%lu\thostmap new\n", nsp->ns_hm_new);
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printf("%lu\thostmap fails\n", nsp->ns_hm_newfail);
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printf("%lu\thostmap add\n", nsp->ns_hm_addref);
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printf("%lu\thostmap NULL rule\n", nsp->ns_hm_nullnp);
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printf("%lu\tlog ok\n", nsp->ns_log_ok);
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printf("%lu\tlog fail\n", nsp->ns_log_fail);
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printf("%u\torphan count\n", nsp->ns_orphans);
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printf("%u\trule count\n", nsp->ns_rules);
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printf("%u\tmap rules\n", nsp->ns_rules_map);
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printf("%u\trdr rules\n", nsp->ns_rules_rdr);
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printf("%u\twilds\n", nsp->ns_wilds);
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if (opts & OPT_VERBOSE)
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printf("list %p\n", nsp->ns_list);
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}
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if (opts & OPT_LIST) {
|
|
if (alive)
|
|
dostats_live(fd, nsp, opts, filter);
|
|
else
|
|
dostats_dead(nsp, opts, filter);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Display NAT statistics.
|
|
*/
|
|
void
|
|
dostats_live(int fd, natstat_t *nsp, int opts, int *filter)
|
|
{
|
|
ipfgeniter_t iter;
|
|
char buffer[2000];
|
|
ipfobj_t obj;
|
|
ipnat_t *ipn;
|
|
nat_t nat;
|
|
int i;
|
|
|
|
bzero((char *)&obj, sizeof(obj));
|
|
obj.ipfo_rev = IPFILTER_VERSION;
|
|
obj.ipfo_type = IPFOBJ_GENITER;
|
|
obj.ipfo_size = sizeof(iter);
|
|
obj.ipfo_ptr = &iter;
|
|
|
|
iter.igi_type = IPFGENITER_IPNAT;
|
|
iter.igi_nitems = 1;
|
|
iter.igi_data = buffer;
|
|
ipn = (ipnat_t *)buffer;
|
|
|
|
/*
|
|
* Show list of NAT rules and NAT sessions ?
|
|
*/
|
|
if (nat_fields == NULL) {
|
|
printf("List of active MAP/Redirect filters:\n");
|
|
while (nsp->ns_list) {
|
|
if (ioctl(fd, SIOCGENITER, &obj) == -1)
|
|
break;
|
|
if (opts & OPT_HITS)
|
|
printf("%lu ", ipn->in_hits);
|
|
printnat(ipn, opts & (OPT_DEBUG|OPT_VERBOSE));
|
|
nsp->ns_list = ipn->in_next;
|
|
}
|
|
}
|
|
|
|
if (nat_fields == NULL) {
|
|
printf("\nList of active sessions:\n");
|
|
|
|
} else if (nohdrfields == 0) {
|
|
for (i = 0; nat_fields[i].w_value != 0; i++) {
|
|
printfieldhdr(natfields, nat_fields + i);
|
|
if (nat_fields[i + 1].w_value != 0)
|
|
printf("\t");
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
i = IPFGENITER_IPNAT;
|
|
(void) ioctl(fd,SIOCIPFDELTOK, &i);
|
|
|
|
|
|
iter.igi_type = IPFGENITER_NAT;
|
|
iter.igi_nitems = 1;
|
|
iter.igi_data = &nat;
|
|
|
|
while (nsp->ns_instances != NULL) {
|
|
if (ioctl(fd, SIOCGENITER, &obj) == -1)
|
|
break;
|
|
if ((filter != NULL) && (nat_matcharray(&nat, filter) == 0))
|
|
continue;
|
|
if (nat_fields != NULL) {
|
|
for (i = 0; nat_fields[i].w_value != 0; i++) {
|
|
printnatfield(&nat, nat_fields[i].w_value);
|
|
if (nat_fields[i + 1].w_value != 0)
|
|
printf("\t");
|
|
}
|
|
printf("\n");
|
|
} else {
|
|
printactivenat(&nat, opts, nsp->ns_ticks);
|
|
if (nat.nat_aps) {
|
|
int proto;
|
|
|
|
if (nat.nat_dir & NAT_OUTBOUND)
|
|
proto = nat.nat_pr[1];
|
|
else
|
|
proto = nat.nat_pr[0];
|
|
printaps(nat.nat_aps, opts, proto);
|
|
}
|
|
}
|
|
nsp->ns_instances = nat.nat_next;
|
|
}
|
|
|
|
if (opts & OPT_VERBOSE)
|
|
showhostmap_live(fd, nsp);
|
|
|
|
i = IPFGENITER_NAT;
|
|
(void) ioctl(fd,SIOCIPFDELTOK, &i);
|
|
}
|
|
|
|
|
|
/*
|
|
* Display the active host mapping table.
|
|
*/
|
|
void
|
|
showhostmap_dead(natstat_t *nsp)
|
|
{
|
|
hostmap_t hm, *hmp, **maptable;
|
|
u_int hv;
|
|
|
|
printf("\nList of active host mappings:\n");
|
|
|
|
maptable = (hostmap_t **)malloc(sizeof(hostmap_t *) *
|
|
nsp->ns_hostmap_sz);
|
|
if (kmemcpy((char *)maptable, (u_long)nsp->ns_maptable,
|
|
sizeof(hostmap_t *) * nsp->ns_hostmap_sz)) {
|
|
perror("kmemcpy (maptable)");
|
|
return;
|
|
}
|
|
|
|
for (hv = 0; hv < nsp->ns_hostmap_sz; hv++) {
|
|
hmp = maptable[hv];
|
|
|
|
while (hmp) {
|
|
if (kmemcpy((char *)&hm, (u_long)hmp, sizeof(hm))) {
|
|
perror("kmemcpy (hostmap)");
|
|
return;
|
|
}
|
|
|
|
printhostmap(&hm, hv);
|
|
hmp = hm.hm_next;
|
|
}
|
|
}
|
|
free(maptable);
|
|
}
|
|
|
|
|
|
/*
|
|
* Display the active host mapping table.
|
|
*/
|
|
void
|
|
showhostmap_live(int fd, natstat_t *nsp)
|
|
{
|
|
ipfgeniter_t iter;
|
|
hostmap_t hm;
|
|
ipfobj_t obj;
|
|
int i;
|
|
|
|
bzero((char *)&obj, sizeof(obj));
|
|
obj.ipfo_rev = IPFILTER_VERSION;
|
|
obj.ipfo_type = IPFOBJ_GENITER;
|
|
obj.ipfo_size = sizeof(iter);
|
|
obj.ipfo_ptr = &iter;
|
|
|
|
iter.igi_type = IPFGENITER_HOSTMAP;
|
|
iter.igi_nitems = 1;
|
|
iter.igi_data = &hm;
|
|
|
|
printf("\nList of active host mappings:\n");
|
|
|
|
while (nsp->ns_maplist != NULL) {
|
|
if (ioctl(fd, SIOCGENITER, &obj) == -1)
|
|
break;
|
|
printhostmap(&hm, hm.hm_hv);
|
|
nsp->ns_maplist = hm.hm_next;
|
|
}
|
|
|
|
i = IPFGENITER_HOSTMAP;
|
|
(void) ioctl(fd,SIOCIPFDELTOK, &i);
|
|
}
|
|
|
|
|
|
int
|
|
nat_matcharray(nat_t *nat, int *array)
|
|
{
|
|
int i, n, *x, rv, p;
|
|
ipfexp_t *e;
|
|
|
|
rv = 0;
|
|
n = array[0];
|
|
x = array + 1;
|
|
|
|
for (; n > 0; x += 3 + x[3], rv = 0) {
|
|
e = (ipfexp_t *)x;
|
|
if (e->ipfe_cmd == IPF_EXP_END)
|
|
break;
|
|
n -= e->ipfe_size;
|
|
|
|
p = e->ipfe_cmd >> 16;
|
|
if ((p != 0) && (p != nat->nat_pr[1]))
|
|
break;
|
|
|
|
switch (e->ipfe_cmd)
|
|
{
|
|
case IPF_EXP_IP_PR :
|
|
for (i = 0; !rv && i < e->ipfe_narg; i++) {
|
|
rv |= (nat->nat_pr[1] == e->ipfe_arg0[i]);
|
|
}
|
|
break;
|
|
|
|
case IPF_EXP_IP_SRCADDR :
|
|
if (nat->nat_v[0] != 4)
|
|
break;
|
|
for (i = 0; !rv && i < e->ipfe_narg; i++) {
|
|
rv |= ((nat->nat_osrcaddr &
|
|
e->ipfe_arg0[i * 2 + 1]) ==
|
|
e->ipfe_arg0[i * 2]) ||
|
|
((nat->nat_nsrcaddr &
|
|
e->ipfe_arg0[i * 2 + 1]) ==
|
|
e->ipfe_arg0[i * 2]);
|
|
}
|
|
break;
|
|
|
|
case IPF_EXP_IP_DSTADDR :
|
|
if (nat->nat_v[0] != 4)
|
|
break;
|
|
for (i = 0; !rv && i < e->ipfe_narg; i++) {
|
|
rv |= ((nat->nat_odstaddr &
|
|
e->ipfe_arg0[i * 2 + 1]) ==
|
|
e->ipfe_arg0[i * 2]) ||
|
|
((nat->nat_ndstaddr &
|
|
e->ipfe_arg0[i * 2 + 1]) ==
|
|
e->ipfe_arg0[i * 2]);
|
|
}
|
|
break;
|
|
|
|
case IPF_EXP_IP_ADDR :
|
|
if (nat->nat_v[0] != 4)
|
|
break;
|
|
for (i = 0; !rv && i < e->ipfe_narg; i++) {
|
|
rv |= ((nat->nat_osrcaddr &
|
|
e->ipfe_arg0[i * 2 + 1]) ==
|
|
e->ipfe_arg0[i * 2]) ||
|
|
((nat->nat_nsrcaddr &
|
|
e->ipfe_arg0[i * 2 + 1]) ==
|
|
e->ipfe_arg0[i * 2]) ||
|
|
((nat->nat_odstaddr &
|
|
e->ipfe_arg0[i * 2 + 1]) ==
|
|
e->ipfe_arg0[i * 2]) ||
|
|
((nat->nat_ndstaddr &
|
|
e->ipfe_arg0[i * 2 + 1]) ==
|
|
e->ipfe_arg0[i * 2]);
|
|
}
|
|
break;
|
|
|
|
#ifdef USE_INET6
|
|
case IPF_EXP_IP6_SRCADDR :
|
|
if (nat->nat_v[0] != 6)
|
|
break;
|
|
for (i = 0; !rv && i < e->ipfe_narg; i++) {
|
|
rv |= IP6_MASKEQ(&nat->nat_osrc6,
|
|
&e->ipfe_arg0[i * 8 + 4],
|
|
&e->ipfe_arg0[i * 8]) ||
|
|
IP6_MASKEQ(&nat->nat_nsrc6,
|
|
&e->ipfe_arg0[i * 8 + 4],
|
|
&e->ipfe_arg0[i * 8]);
|
|
}
|
|
break;
|
|
|
|
case IPF_EXP_IP6_DSTADDR :
|
|
if (nat->nat_v[0] != 6)
|
|
break;
|
|
for (i = 0; !rv && i < e->ipfe_narg; i++) {
|
|
rv |= IP6_MASKEQ(&nat->nat_odst6,
|
|
&e->ipfe_arg0[i * 8 + 4],
|
|
&e->ipfe_arg0[i * 8]) ||
|
|
IP6_MASKEQ(&nat->nat_ndst6,
|
|
&e->ipfe_arg0[i * 8 + 4],
|
|
&e->ipfe_arg0[i * 8]);
|
|
}
|
|
break;
|
|
|
|
case IPF_EXP_IP6_ADDR :
|
|
if (nat->nat_v[0] != 6)
|
|
break;
|
|
for (i = 0; !rv && i < e->ipfe_narg; i++) {
|
|
rv |= IP6_MASKEQ(&nat->nat_osrc6,
|
|
&e->ipfe_arg0[i * 8 + 4],
|
|
&e->ipfe_arg0[i * 8]) ||
|
|
IP6_MASKEQ(&nat->nat_nsrc6,
|
|
&e->ipfe_arg0[i * 8 + 4],
|
|
&e->ipfe_arg0[i * 8]) ||
|
|
IP6_MASKEQ(&nat->nat_odst6,
|
|
&e->ipfe_arg0[i * 8 + 4],
|
|
&e->ipfe_arg0[i * 8]) ||
|
|
IP6_MASKEQ(&nat->nat_ndst6,
|
|
&e->ipfe_arg0[i * 8 + 4],
|
|
&e->ipfe_arg0[i * 8]);
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
case IPF_EXP_UDP_PORT :
|
|
case IPF_EXP_TCP_PORT :
|
|
for (i = 0; !rv && i < e->ipfe_narg; i++) {
|
|
rv |= (nat->nat_osport == e->ipfe_arg0[i]) ||
|
|
(nat->nat_nsport == e->ipfe_arg0[i]) ||
|
|
(nat->nat_odport == e->ipfe_arg0[i]) ||
|
|
(nat->nat_ndport == e->ipfe_arg0[i]);
|
|
}
|
|
break;
|
|
|
|
case IPF_EXP_UDP_SPORT :
|
|
case IPF_EXP_TCP_SPORT :
|
|
for (i = 0; !rv && i < e->ipfe_narg; i++) {
|
|
rv |= (nat->nat_osport == e->ipfe_arg0[i]) ||
|
|
(nat->nat_nsport == e->ipfe_arg0[i]);
|
|
}
|
|
break;
|
|
|
|
case IPF_EXP_UDP_DPORT :
|
|
case IPF_EXP_TCP_DPORT :
|
|
for (i = 0; !rv && i < e->ipfe_narg; i++) {
|
|
rv |= (nat->nat_odport == e->ipfe_arg0[i]) ||
|
|
(nat->nat_ndport == e->ipfe_arg0[i]);
|
|
}
|
|
break;
|
|
}
|
|
rv ^= e->ipfe_not;
|
|
|
|
if (rv == 0)
|
|
break;
|
|
}
|
|
|
|
return(rv);
|
|
}
|