1
2 /*
3 * Copyright (C) 2012 by Darren Reed.
4 *
5 * See the IPFILTER.LICENCE file for details on licencing.
6 *
7 * Added redirect stuff and a variety of bug fixes. (mcn@EnGarde.com)
8 */
9 #include <stdio.h>
10 #include <string.h>
11 #include <fcntl.h>
12 #include <errno.h>
13 #include <sys/types.h>
14 #if !defined(__SVR4)
15 #include <strings.h>
16 #else
17 #include <sys/byteorder.h>
18 #endif
19 #include <sys/time.h>
20 #include <sys/param.h>
21 #include <stdlib.h>
22 #include <unistd.h>
23 #include <stddef.h>
24 #include <sys/file.h>
25 #define _KERNEL
26 #include <sys/uio.h>
27 #undef _KERNEL
28 #include <sys/socket.h>
29 #include <sys/ioctl.h>
30 #if defined(sun) && defined(__SVR4)
31 # include <sys/ioccom.h>
32 # include <sys/sysmacros.h>
33 #endif
34 #include <netinet/in.h>
35 #include <netinet/in_systm.h>
36 #include <netinet/ip.h>
37 #include <netinet/tcp.h>
38 #include <net/if.h>
39 #include <netdb.h>
40 #include <arpa/nameser.h>
41 #include <arpa/inet.h>
42 #include <resolv.h>
43 #include <ctype.h>
44 # include <nlist.h>
45 #include "ipf.h"
46 #include "netinet/ipl.h"
47 #include "kmem.h"
48
49
50 # define STRERROR(x) strerror(x)
51
52
53
54 #if SOLARIS
55 #define bzero(a,b) memset(a,0,b)
56 #endif
57 int use_inet6 = 0;
58
59 extern char *optarg;
60
61 void dostats(int, natstat_t *, int, int, int *);
62 void dotable(natstat_t *, int, int, int, char *);
63 void flushtable(int, int, int *);
64 void usage(char *);
65 int main(int, char*[]);
66 void showhostmap(natstat_t *nsp);
67 void natstat_dead(natstat_t *, char *);
68 void dostats_live(int, natstat_t *, int, int *);
69 void showhostmap_dead(natstat_t *);
70 void showhostmap_live(int, natstat_t *);
71 void dostats_dead(natstat_t *, int, int *);
72 int nat_matcharray(nat_t *, int *);
73
74 int opts;
75 int nohdrfields = 0;
76 wordtab_t *nat_fields = NULL;
77
78 void
usage(char * name)79 usage(char *name)
80 {
81 fprintf(stderr, "Usage: %s [-CFhlnrRsv] [-f filename]\n", name);
82 exit(1);
83 }
84
85
86 int
main(int argc,char * argv[])87 main(int argc, char *argv[])
88 {
89 int fd, c, mode, *natfilter;
90 char *file, *core, *kernel;
91 natstat_t ns, *nsp;
92 ipfobj_t obj;
93
94 fd = -1;
95 opts = 0;
96 nsp = &ns;
97 file = NULL;
98 core = NULL;
99 kernel = NULL;
100 mode = O_RDWR;
101 natfilter = NULL;
102
103 assigndefined(getenv("IPNAT_PREDEFINED"));
104
105 while ((c = getopt(argc, argv, "CdFf:hlm:M:N:nO:prRsv")) != -1)
106 switch (c)
107 {
108 case 'C' :
109 opts |= OPT_CLEAR;
110 break;
111 case 'd' :
112 opts |= OPT_DEBUG;
113 break;
114 case 'f' :
115 file = optarg;
116 break;
117 case 'F' :
118 opts |= OPT_FLUSH;
119 break;
120 case 'h' :
121 opts |=OPT_HITS;
122 break;
123 case 'l' :
124 opts |= OPT_LIST;
125 mode = O_RDONLY;
126 break;
127 case 'm' :
128 natfilter = parseipfexpr(optarg, NULL);
129 break;
130 case 'M' :
131 core = optarg;
132 break;
133 case 'N' :
134 kernel = optarg;
135 break;
136 case 'n' :
137 opts |= OPT_DONOTHING|OPT_DONTOPEN;
138 mode = O_RDONLY;
139 break;
140 case 'O' :
141 nat_fields = parsefields(natfields, optarg);
142 break;
143 case 'p' :
144 opts |= OPT_PURGE;
145 break;
146 case 'R' :
147 opts |= OPT_NORESOLVE;
148 break;
149 case 'r' :
150 opts |= OPT_REMOVE;
151 break;
152 case 's' :
153 opts |= OPT_STAT;
154 mode = O_RDONLY;
155 break;
156 case 'v' :
157 opts |= OPT_VERBOSE;
158 break;
159 default :
160 usage(argv[0]);
161 }
162
163 if (((opts & OPT_PURGE) != 0) && ((opts & OPT_REMOVE) == 0)) {
164 (void) fprintf(stderr, "%s: -p must be used with -r\n",
165 argv[0]);
166 exit(1);
167 }
168
169 initparse();
170
171 if ((kernel != NULL) || (core != NULL)) {
172 (void) setgid(getgid());
173 (void) setuid(getuid());
174 }
175
176 if (!(opts & OPT_DONOTHING)) {
177 if (((fd = open(IPNAT_NAME, mode)) == -1) &&
178 ((fd = open(IPNAT_NAME, O_RDONLY)) == -1)) {
179 (void) fprintf(stderr, "%s: open: %s\n", IPNAT_NAME,
180 STRERROR(errno));
181 exit(1);
182 }
183 }
184
185 bzero((char *)&ns, sizeof(ns));
186
187 if ((opts & OPT_DONOTHING) == 0) {
188 if (checkrev(IPL_NAME) == -1) {
189 fprintf(stderr, "User/kernel version check failed\n");
190 exit(1);
191 }
192 }
193
194 if (!(opts & OPT_DONOTHING) && (kernel == NULL) && (core == NULL)) {
195 bzero((char *)&obj, sizeof(obj));
196 obj.ipfo_rev = IPFILTER_VERSION;
197 obj.ipfo_type = IPFOBJ_NATSTAT;
198 obj.ipfo_size = sizeof(*nsp);
199 obj.ipfo_ptr = (void *)nsp;
200 if (ioctl(fd, SIOCGNATS, &obj) == -1) {
201 ipferror(fd, "ioctl(SIOCGNATS)");
202 exit(1);
203 }
204 (void) setgid(getgid());
205 (void) setuid(getuid());
206 } else if ((kernel != NULL) || (core != NULL)) {
207 if (openkmem(kernel, core) == -1)
208 exit(1);
209
210 natstat_dead(nsp, kernel);
211 if (opts & (OPT_LIST|OPT_STAT))
212 dostats(fd, nsp, opts, 0, natfilter);
213 exit(0);
214 }
215
216 if (opts & (OPT_FLUSH|OPT_CLEAR))
217 flushtable(fd, opts, natfilter);
218 if (file) {
219 return (ipnat_parsefile(fd, ipnat_addrule, ioctl, file));
220 }
221 if (opts & (OPT_LIST|OPT_STAT))
222 dostats(fd, nsp, opts, 1, natfilter);
223 return (0);
224 }
225
226
227 /*
228 * Read NAT statistic information in using a symbol table and memory file
229 * rather than doing ioctl's.
230 */
231 void
natstat_dead(natstat_t * nsp,char * kernel)232 natstat_dead(natstat_t *nsp, char *kernel)
233 {
234 struct nlist nat_nlist[10] = {
235 { "nat_table" }, /* 0 */
236 { "nat_list" },
237 { "maptable" },
238 { "ipf_nattable_sz" },
239 { "ipf_natrules_sz" },
240 { "ipf_rdrrules_sz" }, /* 5 */
241 { "ipf_hostmap_sz" },
242 { "nat_instances" },
243 { NULL }
244 };
245 void *tables[2];
246
247 if (nlist(kernel, nat_nlist) == -1) {
248 fprintf(stderr, "nlist error\n");
249 return;
250 }
251
252 /*
253 * Normally the ioctl copies all of these values into the structure
254 * for us, before returning it to userland, so here we must copy each
255 * one in individually.
256 */
257 kmemcpy((char *)&tables, nat_nlist[0].n_value, sizeof(tables));
258 nsp->ns_side[0].ns_table = tables[0];
259 nsp->ns_side[1].ns_table = tables[1];
260
261 kmemcpy((char *)&nsp->ns_list, nat_nlist[1].n_value,
262 sizeof(nsp->ns_list));
263 kmemcpy((char *)&nsp->ns_maptable, nat_nlist[2].n_value,
264 sizeof(nsp->ns_maptable));
265 kmemcpy((char *)&nsp->ns_nattab_sz, nat_nlist[3].n_value,
266 sizeof(nsp->ns_nattab_sz));
267 kmemcpy((char *)&nsp->ns_rultab_sz, nat_nlist[4].n_value,
268 sizeof(nsp->ns_rultab_sz));
269 kmemcpy((char *)&nsp->ns_rdrtab_sz, nat_nlist[5].n_value,
270 sizeof(nsp->ns_rdrtab_sz));
271 kmemcpy((char *)&nsp->ns_hostmap_sz, nat_nlist[6].n_value,
272 sizeof(nsp->ns_hostmap_sz));
273 kmemcpy((char *)&nsp->ns_instances, nat_nlist[7].n_value,
274 sizeof(nsp->ns_instances));
275 }
276
277
278 /*
279 * Issue an ioctl to flush either the NAT rules table or the active mapping
280 * table or both.
281 */
282 void
flushtable(int fd,int opts,int * match)283 flushtable(int fd, int opts, int *match)
284 {
285 int n = 0;
286
287 if (opts & OPT_FLUSH) {
288 n = 0;
289 if (!(opts & OPT_DONOTHING)) {
290 if (match != NULL) {
291 ipfobj_t obj;
292
293 obj.ipfo_rev = IPFILTER_VERSION;
294 obj.ipfo_size = match[0] * sizeof(int);
295 obj.ipfo_type = IPFOBJ_IPFEXPR;
296 obj.ipfo_ptr = match;
297 if (ioctl(fd, SIOCMATCHFLUSH, &obj) == -1) {
298 ipferror(fd, "ioctl(SIOCMATCHFLUSH)");
299 n = -1;
300 } else {
301 n = obj.ipfo_retval;
302 }
303 } else if (ioctl(fd, SIOCIPFFL, &n) == -1) {
304 ipferror(fd, "ioctl(SIOCIPFFL)");
305 n = -1;
306 }
307 }
308 if (n >= 0)
309 printf("%d entries flushed from NAT table\n", n);
310 }
311
312 if (opts & OPT_CLEAR) {
313 n = 1;
314 if (!(opts & OPT_DONOTHING) && ioctl(fd, SIOCIPFFL, &n) == -1)
315 ipferror(fd, "ioctl(SIOCCNATL)");
316 else
317 printf("%d entries flushed from NAT list\n", n);
318 }
319 }
320
321
322 /*
323 * Display NAT statistics.
324 */
325 void
dostats_dead(natstat_t * nsp,int opts,int * filter)326 dostats_dead(natstat_t *nsp, int opts, int *filter)
327 {
328 nat_t *np, nat;
329 ipnat_t ipn;
330 int i;
331
332 if (nat_fields == NULL) {
333 printf("List of active MAP/Redirect filters:\n");
334 while (nsp->ns_list) {
335 if (kmemcpy((char *)&ipn, (long)nsp->ns_list,
336 sizeof(ipn))) {
337 perror("kmemcpy");
338 break;
339 }
340 if (opts & OPT_HITS)
341 printf("%lu ", ipn.in_hits);
342 printnat(&ipn, opts & (OPT_DEBUG|OPT_VERBOSE));
343 nsp->ns_list = ipn.in_next;
344 }
345 }
346
347 if (nat_fields == NULL) {
348 printf("\nList of active sessions:\n");
349
350 } else if (nohdrfields == 0) {
351 for (i = 0; nat_fields[i].w_value != 0; i++) {
352 printfieldhdr(natfields, nat_fields + i);
353 if (nat_fields[i + 1].w_value != 0)
354 printf("\t");
355 }
356 printf("\n");
357 }
358
359 for (np = nsp->ns_instances; np; np = nat.nat_next) {
360 if (kmemcpy((char *)&nat, (long)np, sizeof(nat)))
361 break;
362 if ((filter != NULL) && (nat_matcharray(&nat, filter) == 0))
363 continue;
364 if (nat_fields != NULL) {
365 for (i = 0; nat_fields[i].w_value != 0; i++) {
366 printnatfield(&nat, nat_fields[i].w_value);
367 if (nat_fields[i + 1].w_value != 0)
368 printf("\t");
369 }
370 printf("\n");
371 } else {
372 printactivenat(&nat, opts, nsp->ns_ticks);
373 if (nat.nat_aps) {
374 int proto;
375
376 if (nat.nat_dir & NAT_OUTBOUND)
377 proto = nat.nat_pr[1];
378 else
379 proto = nat.nat_pr[0];
380 printaps(nat.nat_aps, opts, proto);
381 }
382 }
383 }
384
385 if (opts & OPT_VERBOSE)
386 showhostmap_dead(nsp);
387 }
388
389
390 void
dotable(natstat_t * nsp,int fd,int alive,int which,char * side)391 dotable(natstat_t *nsp, int fd, int alive, int which, char *side)
392 {
393 int sz, i, used, maxlen, minlen, totallen;
394 ipftable_t table;
395 u_int *buckets;
396 ipfobj_t obj;
397
398 sz = sizeof(*buckets) * nsp->ns_nattab_sz;
399 buckets = (u_int *)malloc(sz);
400 if (buckets == NULL) {
401 fprintf(stderr,
402 "cannot allocate memory (%d) for buckets\n", sz);
403 return;
404 }
405
406 obj.ipfo_rev = IPFILTER_VERSION;
407 obj.ipfo_type = IPFOBJ_GTABLE;
408 obj.ipfo_size = sizeof(table);
409 obj.ipfo_ptr = &table;
410
411 if (which == 0) {
412 table.ita_type = IPFTABLE_BUCKETS_NATIN;
413 } else if (which == 1) {
414 table.ita_type = IPFTABLE_BUCKETS_NATOUT;
415 }
416 table.ita_table = buckets;
417
418 if (alive) {
419 if (ioctl(fd, SIOCGTABL, &obj) != 0) {
420 ipferror(fd, "SIOCFTABL");
421 free(buckets);
422 return;
423 }
424 } else {
425 if (kmemcpy((char *)buckets, (u_long)nsp->ns_nattab_sz, sz)) {
426 free(buckets);
427 return;
428 }
429 }
430
431 minlen = nsp->ns_side[which].ns_inuse;
432 totallen = 0;
433 maxlen = 0;
434 used = 0;
435
436 for (i = 0; i < nsp->ns_nattab_sz; i++) {
437 if (buckets[i] > maxlen)
438 maxlen = buckets[i];
439 if (buckets[i] < minlen)
440 minlen = buckets[i];
441 if (buckets[i] != 0)
442 used++;
443 totallen += buckets[i];
444 }
445
446 printf("%d%%\thash efficiency %s\n",
447 totallen ? used * 100 / totallen : 0, side);
448 printf("%2.2f%%\tbucket usage %s\n",
449 ((float)used / nsp->ns_nattab_sz) * 100.0, side);
450 printf("%d\tminimal length %s\n", minlen, side);
451 printf("%d\tmaximal length %s\n", maxlen, side);
452 printf("%.3f\taverage length %s\n",
453 used ? ((float)totallen / used) : 0.0, side);
454
455 free(buckets);
456 }
457
458
459 void
dostats(int fd,natstat_t * nsp,int opts,int alive,int * filter)460 dostats(int fd, natstat_t *nsp, int opts, int alive, int *filter)
461 {
462 /*
463 * Show statistics ?
464 */
465 if (opts & OPT_STAT) {
466 printnatside("in", &nsp->ns_side[0]);
467 dotable(nsp, fd, alive, 0, "in");
468
469 printnatside("out", &nsp->ns_side[1]);
470 dotable(nsp, fd, alive, 1, "out");
471
472 printf("%lu\tlog successes\n", nsp->ns_side[0].ns_log);
473 printf("%lu\tlog failures\n", nsp->ns_side[1].ns_log);
474 printf("%lu\tadded in\n%lu\tadded out\n",
475 nsp->ns_side[0].ns_added,
476 nsp->ns_side[1].ns_added);
477 printf("%u\tactive\n", nsp->ns_active);
478 printf("%lu\ttransparent adds\n", nsp->ns_addtrpnt);
479 printf("%lu\tdivert build\n", nsp->ns_divert_build);
480 printf("%lu\texpired\n", nsp->ns_expire);
481 printf("%lu\tflush all\n", nsp->ns_flush_all);
482 printf("%lu\tflush closing\n", nsp->ns_flush_closing);
483 printf("%lu\tflush queue\n", nsp->ns_flush_queue);
484 printf("%lu\tflush state\n", nsp->ns_flush_state);
485 printf("%lu\tflush timeout\n", nsp->ns_flush_timeout);
486 printf("%lu\thostmap new\n", nsp->ns_hm_new);
487 printf("%lu\thostmap fails\n", nsp->ns_hm_newfail);
488 printf("%lu\thostmap add\n", nsp->ns_hm_addref);
489 printf("%lu\thostmap NULL rule\n", nsp->ns_hm_nullnp);
490 printf("%lu\tlog ok\n", nsp->ns_log_ok);
491 printf("%lu\tlog fail\n", nsp->ns_log_fail);
492 printf("%u\torphan count\n", nsp->ns_orphans);
493 printf("%u\trule count\n", nsp->ns_rules);
494 printf("%u\tmap rules\n", nsp->ns_rules_map);
495 printf("%u\trdr rules\n", nsp->ns_rules_rdr);
496 printf("%u\twilds\n", nsp->ns_wilds);
497 if (opts & OPT_VERBOSE)
498 printf("list %p\n", nsp->ns_list);
499 }
500
501 if (opts & OPT_LIST) {
502 if (alive)
503 dostats_live(fd, nsp, opts, filter);
504 else
505 dostats_dead(nsp, opts, filter);
506 }
507 }
508
509
510 /*
511 * Display NAT statistics.
512 */
513 void
dostats_live(int fd,natstat_t * nsp,int opts,int * filter)514 dostats_live(int fd, natstat_t *nsp, int opts, int *filter)
515 {
516 ipfgeniter_t iter;
517 char buffer[2000];
518 ipfobj_t obj;
519 ipnat_t *ipn;
520 nat_t nat;
521 int i;
522
523 bzero((char *)&obj, sizeof(obj));
524 obj.ipfo_rev = IPFILTER_VERSION;
525 obj.ipfo_type = IPFOBJ_GENITER;
526 obj.ipfo_size = sizeof(iter);
527 obj.ipfo_ptr = &iter;
528
529 iter.igi_type = IPFGENITER_IPNAT;
530 iter.igi_nitems = 1;
531 iter.igi_data = buffer;
532 ipn = (ipnat_t *)buffer;
533
534 /*
535 * Show list of NAT rules and NAT sessions ?
536 */
537 if (nat_fields == NULL) {
538 printf("List of active MAP/Redirect filters:\n");
539 while (nsp->ns_list) {
540 if (ioctl(fd, SIOCGENITER, &obj) == -1)
541 break;
542 if (opts & OPT_HITS)
543 printf("%lu ", ipn->in_hits);
544 printnat(ipn, opts & (OPT_DEBUG|OPT_VERBOSE));
545 nsp->ns_list = ipn->in_next;
546 }
547 }
548
549 if (nat_fields == NULL) {
550 printf("\nList of active sessions:\n");
551
552 } else if (nohdrfields == 0) {
553 for (i = 0; nat_fields[i].w_value != 0; i++) {
554 printfieldhdr(natfields, nat_fields + i);
555 if (nat_fields[i + 1].w_value != 0)
556 printf("\t");
557 }
558 printf("\n");
559 }
560
561 i = IPFGENITER_IPNAT;
562 (void) ioctl(fd,SIOCIPFDELTOK, &i);
563
564
565 iter.igi_type = IPFGENITER_NAT;
566 iter.igi_nitems = 1;
567 iter.igi_data = &nat;
568
569 while (nsp->ns_instances != NULL) {
570 if (ioctl(fd, SIOCGENITER, &obj) == -1)
571 break;
572 if ((filter != NULL) && (nat_matcharray(&nat, filter) == 0))
573 continue;
574 if (nat_fields != NULL) {
575 for (i = 0; nat_fields[i].w_value != 0; i++) {
576 printnatfield(&nat, nat_fields[i].w_value);
577 if (nat_fields[i + 1].w_value != 0)
578 printf("\t");
579 }
580 printf("\n");
581 } else {
582 printactivenat(&nat, opts, nsp->ns_ticks);
583 if (nat.nat_aps) {
584 int proto;
585
586 if (nat.nat_dir & NAT_OUTBOUND)
587 proto = nat.nat_pr[1];
588 else
589 proto = nat.nat_pr[0];
590 printaps(nat.nat_aps, opts, proto);
591 }
592 }
593 nsp->ns_instances = nat.nat_next;
594 }
595
596 if (opts & OPT_VERBOSE)
597 showhostmap_live(fd, nsp);
598
599 i = IPFGENITER_NAT;
600 (void) ioctl(fd,SIOCIPFDELTOK, &i);
601 }
602
603
604 /*
605 * Display the active host mapping table.
606 */
607 void
showhostmap_dead(natstat_t * nsp)608 showhostmap_dead(natstat_t *nsp)
609 {
610 hostmap_t hm, *hmp, **maptable;
611 u_int hv;
612
613 printf("\nList of active host mappings:\n");
614
615 maptable = (hostmap_t **)malloc(sizeof(hostmap_t *) *
616 nsp->ns_hostmap_sz);
617 if (kmemcpy((char *)maptable, (u_long)nsp->ns_maptable,
618 sizeof(hostmap_t *) * nsp->ns_hostmap_sz)) {
619 perror("kmemcpy (maptable)");
620 return;
621 }
622
623 for (hv = 0; hv < nsp->ns_hostmap_sz; hv++) {
624 hmp = maptable[hv];
625
626 while (hmp) {
627 if (kmemcpy((char *)&hm, (u_long)hmp, sizeof(hm))) {
628 perror("kmemcpy (hostmap)");
629 return;
630 }
631
632 printhostmap(&hm, hv);
633 hmp = hm.hm_next;
634 }
635 }
636 free(maptable);
637 }
638
639
640 /*
641 * Display the active host mapping table.
642 */
643 void
showhostmap_live(int fd,natstat_t * nsp)644 showhostmap_live(int fd, natstat_t *nsp)
645 {
646 ipfgeniter_t iter;
647 hostmap_t hm;
648 ipfobj_t obj;
649 int i;
650
651 bzero((char *)&obj, sizeof(obj));
652 obj.ipfo_rev = IPFILTER_VERSION;
653 obj.ipfo_type = IPFOBJ_GENITER;
654 obj.ipfo_size = sizeof(iter);
655 obj.ipfo_ptr = &iter;
656
657 iter.igi_type = IPFGENITER_HOSTMAP;
658 iter.igi_nitems = 1;
659 iter.igi_data = &hm;
660
661 printf("\nList of active host mappings:\n");
662
663 while (nsp->ns_maplist != NULL) {
664 if (ioctl(fd, SIOCGENITER, &obj) == -1)
665 break;
666 printhostmap(&hm, hm.hm_hv);
667 nsp->ns_maplist = hm.hm_next;
668 }
669
670 i = IPFGENITER_HOSTMAP;
671 (void) ioctl(fd,SIOCIPFDELTOK, &i);
672 }
673
674
675 int
nat_matcharray(nat_t * nat,int * array)676 nat_matcharray(nat_t *nat, int *array)
677 {
678 int i, n, *x, rv, p;
679 ipfexp_t *e;
680
681 rv = 0;
682 n = array[0];
683 x = array + 1;
684
685 for (; n > 0; x += 3 + x[3], rv = 0) {
686 e = (ipfexp_t *)x;
687 if (e->ipfe_cmd == IPF_EXP_END)
688 break;
689 n -= e->ipfe_size;
690
691 p = e->ipfe_cmd >> 16;
692 if ((p != 0) && (p != nat->nat_pr[1]))
693 break;
694
695 switch (e->ipfe_cmd)
696 {
697 case IPF_EXP_IP_PR :
698 for (i = 0; !rv && i < e->ipfe_narg; i++) {
699 rv |= (nat->nat_pr[1] == e->ipfe_arg0[i]);
700 }
701 break;
702
703 case IPF_EXP_IP_SRCADDR :
704 if (nat->nat_v[0] != 4)
705 break;
706 for (i = 0; !rv && i < e->ipfe_narg; i++) {
707 rv |= ((nat->nat_osrcaddr &
708 e->ipfe_arg0[i * 2 + 1]) ==
709 e->ipfe_arg0[i * 2]) ||
710 ((nat->nat_nsrcaddr &
711 e->ipfe_arg0[i * 2 + 1]) ==
712 e->ipfe_arg0[i * 2]);
713 }
714 break;
715
716 case IPF_EXP_IP_DSTADDR :
717 if (nat->nat_v[0] != 4)
718 break;
719 for (i = 0; !rv && i < e->ipfe_narg; i++) {
720 rv |= ((nat->nat_odstaddr &
721 e->ipfe_arg0[i * 2 + 1]) ==
722 e->ipfe_arg0[i * 2]) ||
723 ((nat->nat_ndstaddr &
724 e->ipfe_arg0[i * 2 + 1]) ==
725 e->ipfe_arg0[i * 2]);
726 }
727 break;
728
729 case IPF_EXP_IP_ADDR :
730 if (nat->nat_v[0] != 4)
731 break;
732 for (i = 0; !rv && i < e->ipfe_narg; i++) {
733 rv |= ((nat->nat_osrcaddr &
734 e->ipfe_arg0[i * 2 + 1]) ==
735 e->ipfe_arg0[i * 2]) ||
736 ((nat->nat_nsrcaddr &
737 e->ipfe_arg0[i * 2 + 1]) ==
738 e->ipfe_arg0[i * 2]) ||
739 ((nat->nat_odstaddr &
740 e->ipfe_arg0[i * 2 + 1]) ==
741 e->ipfe_arg0[i * 2]) ||
742 ((nat->nat_ndstaddr &
743 e->ipfe_arg0[i * 2 + 1]) ==
744 e->ipfe_arg0[i * 2]);
745 }
746 break;
747
748 #ifdef USE_INET6
749 case IPF_EXP_IP6_SRCADDR :
750 if (nat->nat_v[0] != 6)
751 break;
752 for (i = 0; !rv && i < e->ipfe_narg; i++) {
753 rv |= IP6_MASKEQ(&nat->nat_osrc6,
754 &e->ipfe_arg0[i * 8 + 4],
755 &e->ipfe_arg0[i * 8]) ||
756 IP6_MASKEQ(&nat->nat_nsrc6,
757 &e->ipfe_arg0[i * 8 + 4],
758 &e->ipfe_arg0[i * 8]);
759 }
760 break;
761
762 case IPF_EXP_IP6_DSTADDR :
763 if (nat->nat_v[0] != 6)
764 break;
765 for (i = 0; !rv && i < e->ipfe_narg; i++) {
766 rv |= IP6_MASKEQ(&nat->nat_odst6,
767 &e->ipfe_arg0[i * 8 + 4],
768 &e->ipfe_arg0[i * 8]) ||
769 IP6_MASKEQ(&nat->nat_ndst6,
770 &e->ipfe_arg0[i * 8 + 4],
771 &e->ipfe_arg0[i * 8]);
772 }
773 break;
774
775 case IPF_EXP_IP6_ADDR :
776 if (nat->nat_v[0] != 6)
777 break;
778 for (i = 0; !rv && i < e->ipfe_narg; i++) {
779 rv |= IP6_MASKEQ(&nat->nat_osrc6,
780 &e->ipfe_arg0[i * 8 + 4],
781 &e->ipfe_arg0[i * 8]) ||
782 IP6_MASKEQ(&nat->nat_nsrc6,
783 &e->ipfe_arg0[i * 8 + 4],
784 &e->ipfe_arg0[i * 8]) ||
785 IP6_MASKEQ(&nat->nat_odst6,
786 &e->ipfe_arg0[i * 8 + 4],
787 &e->ipfe_arg0[i * 8]) ||
788 IP6_MASKEQ(&nat->nat_ndst6,
789 &e->ipfe_arg0[i * 8 + 4],
790 &e->ipfe_arg0[i * 8]);
791 }
792 break;
793 #endif
794
795 case IPF_EXP_UDP_PORT :
796 case IPF_EXP_TCP_PORT :
797 for (i = 0; !rv && i < e->ipfe_narg; i++) {
798 rv |= (nat->nat_osport == e->ipfe_arg0[i]) ||
799 (nat->nat_nsport == e->ipfe_arg0[i]) ||
800 (nat->nat_odport == e->ipfe_arg0[i]) ||
801 (nat->nat_ndport == e->ipfe_arg0[i]);
802 }
803 break;
804
805 case IPF_EXP_UDP_SPORT :
806 case IPF_EXP_TCP_SPORT :
807 for (i = 0; !rv && i < e->ipfe_narg; i++) {
808 rv |= (nat->nat_osport == e->ipfe_arg0[i]) ||
809 (nat->nat_nsport == e->ipfe_arg0[i]);
810 }
811 break;
812
813 case IPF_EXP_UDP_DPORT :
814 case IPF_EXP_TCP_DPORT :
815 for (i = 0; !rv && i < e->ipfe_narg; i++) {
816 rv |= (nat->nat_odport == e->ipfe_arg0[i]) ||
817 (nat->nat_ndport == e->ipfe_arg0[i]);
818 }
819 break;
820 }
821 rv ^= e->ipfe_not;
822
823 if (rv == 0)
824 break;
825 }
826
827 return (rv);
828 }
829