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* Fix some cases where NULL was used but 0 was meant (and vice versa).
[dragonfly.git] / contrib / tcpdump-3.9 / print-isakmp.c
blob09972f0292b5dd7f9b9b5bdc129e60a52cc662f7
1 /*
2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the project nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 */
30
31 #ifndef lint
32 static const char rcsid[] _U_ =
33 "@(#) $Header: /tcpdump/master/tcpdump/print-isakmp.c,v 1.51 2005/04/07 00:28:17 mcr Exp $ (LBL)";
34 #endif
35
36 #ifdef HAVE_CONFIG_H
37 #include "config.h"
38 #endif
39
40 #include <tcpdump-stdinc.h>
41
42 #include <string.h>
43
44 #include <stdio.h>
45
46 #include "isakmp.h"
47 #include "ipsec_doi.h"
48 #include "oakley.h"
49 #include "interface.h"
50 #include "addrtoname.h"
51 #include "extract.h" /* must come after interface.h */
52
53 #include "ip.h"
54 #ifdef INET6
55 #include "ip6.h"
56 #endif
57
58 #ifndef HAVE_SOCKADDR_STORAGE
59 #define sockaddr_storage sockaddr
60 #endif
61
62 static const u_char *isakmp_sa_print(const struct isakmp_gen *,
63 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
64 static const u_char *isakmp_p_print(const struct isakmp_gen *,
65 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
66 static const u_char *isakmp_t_print(const struct isakmp_gen *,
67 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
68 static const u_char *isakmp_ke_print(const struct isakmp_gen *,
69 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
70 static const u_char *isakmp_id_print(const struct isakmp_gen *,
71 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
72 static const u_char *isakmp_cert_print(const struct isakmp_gen *,
73 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
74 static const u_char *isakmp_cr_print(const struct isakmp_gen *,
75 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
76 static const u_char *isakmp_sig_print(const struct isakmp_gen *,
77 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
78 static const u_char *isakmp_hash_print(const struct isakmp_gen *,
79 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
80 static const u_char *isakmp_nonce_print(const struct isakmp_gen *,
81 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
82 static const u_char *isakmp_n_print(const struct isakmp_gen *,
83 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
84 static const u_char *isakmp_d_print(const struct isakmp_gen *,
85 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
86 static const u_char *isakmp_vid_print(const struct isakmp_gen *,
87 u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
88 static const u_char *isakmp_sub0_print(u_char, const struct isakmp_gen *,
89 const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
90 static const u_char *isakmp_sub_print(u_char, const struct isakmp_gen *,
91 const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
92 static char *numstr(int);
93 static void safememcpy(void *, const void *, size_t);
94
95 #define MAXINITIATORS 20
96 int ninitiator = 0;
97 struct {
98 cookie_t initiator;
99 struct sockaddr_storage iaddr;
100 struct sockaddr_storage raddr;
101 } cookiecache[MAXINITIATORS];
102
103 /* protocol id */
104 static const char *protoidstr[] = {
105 NULL, "isakmp", "ipsec-ah", "ipsec-esp", "ipcomp",
106 };
107
108 /* isakmp->np */
109 static const char *npstr[] = {
110 "none", "sa", "p", "t", "ke", "id", "cert", "cr", "hash",
111 "sig", "nonce", "n", "d", "vid"
112 };
113
114 /* isakmp->np */
115 static const u_char *(*npfunc[])(const struct isakmp_gen *, u_int,
116 const u_char *, u_int32_t, u_int32_t, u_int32_t, int) = {
117 NULL,
118 isakmp_sa_print,
119 isakmp_p_print,
120 isakmp_t_print,
121 isakmp_ke_print,
122 isakmp_id_print,
123 isakmp_cert_print,
124 isakmp_cr_print,
125 isakmp_hash_print,
126 isakmp_sig_print,
127 isakmp_nonce_print,
128 isakmp_n_print,
129 isakmp_d_print,
130 isakmp_vid_print,
131 };
132
133 /* isakmp->etype */
134 static const char *etypestr[] = {
135 "none", "base", "ident", "auth", "agg", "inf", NULL, NULL,
136 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
137 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
138 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
139 "oakley-quick", "oakley-newgroup",
140 };
141
142 #define STR_OR_ID(x, tab) \
143 (((x) < sizeof(tab)/sizeof(tab[0]) && tab[(x)]) ? tab[(x)] : numstr(x))
144 #define PROTOIDSTR(x) STR_OR_ID(x, protoidstr)
145 #define NPSTR(x) STR_OR_ID(x, npstr)
146 #define ETYPESTR(x) STR_OR_ID(x, etypestr)
147
148 #define NPFUNC(x) \
149 (((x) < sizeof(npfunc)/sizeof(npfunc[0]) && npfunc[(x)]) \
150 ? npfunc[(x)] : NULL)
151
152 static int
153 iszero(u_char *p, size_t l)
154 {
155 while (l--) {
156 if (*p++)
157 return 0;
158 }
159 return 1;
160 }
161
162 /* find cookie from initiator cache */
163 static int
164 cookie_find(cookie_t *in)
165 {
166 int i;
167
168 for (i = 0; i < MAXINITIATORS; i++) {
169 if (memcmp(in, &cookiecache[i].initiator, sizeof(*in)) == 0)
170 return i;
171 }
172
173 return -1;
174 }
175
176 /* record initiator */
177 static void
178 cookie_record(cookie_t *in, const u_char *bp2)
179 {
180 int i;
181 struct ip *ip;
182 struct sockaddr_in *sin;
183 #ifdef INET6
184 struct ip6_hdr *ip6;
185 struct sockaddr_in6 *sin6;
186 #endif
187
188 i = cookie_find(in);
189 if (0 <= i) {
190 ninitiator = (i + 1) % MAXINITIATORS;
191 return;
192 }
193
194 ip = (struct ip *)bp2;
195 switch (IP_V(ip)) {
196 case 4:
197 memset(&cookiecache[ninitiator].iaddr, 0,
198 sizeof(cookiecache[ninitiator].iaddr));
199 memset(&cookiecache[ninitiator].raddr, 0,
200 sizeof(cookiecache[ninitiator].raddr));
201
202 sin = (struct sockaddr_in *)&cookiecache[ninitiator].iaddr;
203 #ifdef HAVE_SOCKADDR_SA_LEN
204 sin->sin_len = sizeof(struct sockaddr_in);
205 #endif
206 sin->sin_family = AF_INET;
207 memcpy(&sin->sin_addr, &ip->ip_src, sizeof(ip->ip_src));
208 sin = (struct sockaddr_in *)&cookiecache[ninitiator].raddr;
209 #ifdef HAVE_SOCKADDR_SA_LEN
210 sin->sin_len = sizeof(struct sockaddr_in);
211 #endif
212 sin->sin_family = AF_INET;
213 memcpy(&sin->sin_addr, &ip->ip_dst, sizeof(ip->ip_dst));
214 break;
215 #ifdef INET6
216 case 6:
217 memset(&cookiecache[ninitiator].iaddr, 0,
218 sizeof(cookiecache[ninitiator].iaddr));
219 memset(&cookiecache[ninitiator].raddr, 0,
220 sizeof(cookiecache[ninitiator].raddr));
221
222 ip6 = (struct ip6_hdr *)bp2;
223 sin6 = (struct sockaddr_in6 *)&cookiecache[ninitiator].iaddr;
224 #ifdef HAVE_SOCKADDR_SA_LEN
225 sin6->sin6_len = sizeof(struct sockaddr_in6);
226 #endif
227 sin6->sin6_family = AF_INET6;
228 memcpy(&sin6->sin6_addr, &ip6->ip6_src, sizeof(ip6->ip6_src));
229 sin6 = (struct sockaddr_in6 *)&cookiecache[ninitiator].raddr;
230 #ifdef HAVE_SOCKADDR_SA_LEN
231 sin6->sin6_len = sizeof(struct sockaddr_in6);
232 #endif
233 sin6->sin6_family = AF_INET6;
234 memcpy(&sin6->sin6_addr, &ip6->ip6_dst, sizeof(ip6->ip6_dst));
235 break;
236 #endif
237 default:
238 return;
239 }
240 memcpy(&cookiecache[ninitiator].initiator, in, sizeof(*in));
241 ninitiator = (ninitiator + 1) % MAXINITIATORS;
242 }
243
244 #define cookie_isinitiator(x, y) cookie_sidecheck((x), (y), 1)
245 #define cookie_isresponder(x, y) cookie_sidecheck((x), (y), 0)
246 static int
247 cookie_sidecheck(int i, const u_char *bp2, int initiator)
248 {
249 struct sockaddr_storage ss;
250 struct sockaddr *sa;
251 struct ip *ip;
252 struct sockaddr_in *sin;
253 #ifdef INET6
254 struct ip6_hdr *ip6;
255 struct sockaddr_in6 *sin6;
256 #endif
257 int salen;
258
259 memset(&ss, 0, sizeof(ss));
260 ip = (struct ip *)bp2;
261 switch (IP_V(ip)) {
262 case 4:
263 sin = (struct sockaddr_in *)&ss;
264 #ifdef HAVE_SOCKADDR_SA_LEN
265 sin->sin_len = sizeof(struct sockaddr_in);
266 #endif
267 sin->sin_family = AF_INET;
268 memcpy(&sin->sin_addr, &ip->ip_src, sizeof(ip->ip_src));
269 break;
270 #ifdef INET6
271 case 6:
272 ip6 = (struct ip6_hdr *)bp2;
273 sin6 = (struct sockaddr_in6 *)&ss;
274 #ifdef HAVE_SOCKADDR_SA_LEN
275 sin6->sin6_len = sizeof(struct sockaddr_in6);
276 #endif
277 sin6->sin6_family = AF_INET6;
278 memcpy(&sin6->sin6_addr, &ip6->ip6_src, sizeof(ip6->ip6_src));
279 break;
280 #endif
281 default:
282 return 0;
283 }
284
285 sa = (struct sockaddr *)&ss;
286 if (initiator) {
287 if (sa->sa_family != ((struct sockaddr *)&cookiecache[i].iaddr)->sa_family)
288 return 0;
289 #ifdef HAVE_SOCKADDR_SA_LEN
290 salen = sa->sa_len;
291 #else
292 #ifdef INET6
293 if (sa->sa_family == AF_INET6)
294 salen = sizeof(struct sockaddr_in6);
295 else
296 salen = sizeof(struct sockaddr);
297 #else
298 salen = sizeof(struct sockaddr);
299 #endif
300 #endif
301 if (memcmp(&ss, &cookiecache[i].iaddr, salen) == 0)
302 return 1;
303 } else {
304 if (sa->sa_family != ((struct sockaddr *)&cookiecache[i].raddr)->sa_family)
305 return 0;
306 #ifdef HAVE_SOCKADDR_SA_LEN
307 salen = sa->sa_len;
308 #else
309 #ifdef INET6
310 if (sa->sa_family == AF_INET6)
311 salen = sizeof(struct sockaddr_in6);
312 else
313 salen = sizeof(struct sockaddr);
314 #else
315 salen = sizeof(struct sockaddr);
316 #endif
317 #endif
318 if (memcmp(&ss, &cookiecache[i].raddr, salen) == 0)
319 return 1;
320 }
321 return 0;
322 }
323
324 static int
325 rawprint(caddr_t loc, size_t len)
326 {
327 static u_char *p;
328 size_t i;
329
330 TCHECK2(*loc, len);
331
332 p = (u_char *)loc;
333 for (i = 0; i < len; i++)
334 printf("%02x", p[i] & 0xff);
335 return 1;
336 trunc:
337 return 0;
338 }
339
340 struct attrmap {
341 const char *type;
342 u_int nvalue;
343 const char *value[30]; /*XXX*/
344 };
345
346 static const u_char *
347 isakmp_attrmap_print(const u_char *p, const u_char *ep,
348 const struct attrmap *map, size_t nmap)
349 {
350 u_int16_t *q;
351 int totlen;
352 u_int32_t t, v;
353
354 q = (u_int16_t *)p;
355 if (p[0] & 0x80)
356 totlen = 4;
357 else
358 totlen = 4 + EXTRACT_16BITS(&q[1]);
359 if (ep < p + totlen) {
360 printf("[|attr]");
361 return ep + 1;
362 }
363
364 printf("(");
365 t = EXTRACT_16BITS(&q[0]) & 0x7fff;
366 if (map && t < nmap && map[t].type)
367 printf("type=%s ", map[t].type);
368 else
369 printf("type=#%d ", t);
370 if (p[0] & 0x80) {
371 printf("value=");
372 v = EXTRACT_16BITS(&q[1]);
373 if (map && t < nmap && v < map[t].nvalue && map[t].value[v])
374 printf("%s", map[t].value[v]);
375 else
376 rawprint((caddr_t)&q[1], 2);
377 } else {
378 printf("len=%d value=", EXTRACT_16BITS(&q[1]));
379 rawprint((caddr_t)&p[4], EXTRACT_16BITS(&q[1]));
380 }
381 printf(")");
382 return p + totlen;
383 }
384
385 static const u_char *
386 isakmp_attr_print(const u_char *p, const u_char *ep)
387 {
388 u_int16_t *q;
389 int totlen;
390 u_int32_t t;
391
392 q = (u_int16_t *)p;
393 if (p[0] & 0x80)
394 totlen = 4;
395 else
396 totlen = 4 + EXTRACT_16BITS(&q[1]);
397 if (ep < p + totlen) {
398 printf("[|attr]");
399 return ep + 1;
400 }
401
402 printf("(");
403 t = EXTRACT_16BITS(&q[0]) & 0x7fff;
404 printf("type=#%d ", t);
405 if (p[0] & 0x80) {
406 printf("value=");
407 t = q[1];
408 rawprint((caddr_t)&q[1], 2);
409 } else {
410 printf("len=%d value=", EXTRACT_16BITS(&q[1]));
411 rawprint((caddr_t)&p[2], EXTRACT_16BITS(&q[1]));
412 }
413 printf(")");
414 return p + totlen;
415 }
416
417 static const u_char *
418 isakmp_sa_print(const struct isakmp_gen *ext,
419 u_int item_len _U_,
420 const u_char *ep, u_int32_t phase, u_int32_t doi0 _U_,
421 u_int32_t proto0, int depth)
422 {
423 const struct isakmp_pl_sa *p;
424 struct isakmp_pl_sa sa;
425 const u_int32_t *q;
426 u_int32_t doi, sit, ident;
427 const u_char *cp, *np;
428 int t;
429
430 printf("%s:", NPSTR(ISAKMP_NPTYPE_SA));
431
432 p = (struct isakmp_pl_sa *)ext;
433 TCHECK(*p);
434 safememcpy(&sa, ext, sizeof(sa));
435 doi = ntohl(sa.doi);
436 sit = ntohl(sa.sit);
437 if (doi != 1) {
438 printf(" doi=%d", doi);
439 printf(" situation=%u", (u_int32_t)ntohl(sa.sit));
440 return (u_char *)(p + 1);
441 }
442
443 printf(" doi=ipsec");
444 q = (u_int32_t *)&sa.sit;
445 printf(" situation=");
446 t = 0;
447 if (sit & 0x01) {
448 printf("identity");
449 t++;
450 }
451 if (sit & 0x02) {
452 printf("%ssecrecy", t ? "+" : "");
453 t++;
454 }
455 if (sit & 0x04)
456 printf("%sintegrity", t ? "+" : "");
457
458 np = (u_char *)ext + sizeof(sa);
459 if (sit != 0x01) {
460 TCHECK2(*(ext + 1), sizeof(ident));
461 safememcpy(&ident, ext + 1, sizeof(ident));
462 printf(" ident=%u", (u_int32_t)ntohl(ident));
463 np += sizeof(ident);
464 }
465
466 ext = (struct isakmp_gen *)np;
467 TCHECK(*ext);
468
469 cp = isakmp_sub_print(ISAKMP_NPTYPE_P, ext, ep, phase, doi, proto0,
470 depth);
471
472 return cp;
473 trunc:
474 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_SA));
475 return NULL;
476 }
477
478 static const u_char *
479 isakmp_p_print(const struct isakmp_gen *ext, u_int item_len _U_,
480 const u_char *ep, u_int32_t phase, u_int32_t doi0,
481 u_int32_t proto0 _U_, int depth)
482 {
483 const struct isakmp_pl_p *p;
484 struct isakmp_pl_p prop;
485 const u_char *cp;
486
487 printf("%s:", NPSTR(ISAKMP_NPTYPE_P));
488
489 p = (struct isakmp_pl_p *)ext;
490 TCHECK(*p);
491 safememcpy(&prop, ext, sizeof(prop));
492 printf(" #%d protoid=%s transform=%d",
493 prop.p_no, PROTOIDSTR(prop.prot_id), prop.num_t);
494 if (prop.spi_size) {
495 printf(" spi=");
496 if (!rawprint((caddr_t)(p + 1), prop.spi_size))
497 goto trunc;
498 }
499
500 ext = (struct isakmp_gen *)((u_char *)(p + 1) + prop.spi_size);
501 TCHECK(*ext);
502
503 cp = isakmp_sub_print(ISAKMP_NPTYPE_T, ext, ep, phase, doi0,
504 prop.prot_id, depth);
505
506 return cp;
507 trunc:
508 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_P));
509 return NULL;
510 }
511
512 static const char *isakmp_p_map[] = {
513 NULL, "ike",
514 };
515
516 static const char *ah_p_map[] = {
517 NULL, "(reserved)", "md5", "sha", "1des",
518 "sha2-256", "sha2-384", "sha2-512",
519 };
520
521 static const char *esp_p_map[] = {
522 NULL, "1des-iv64", "1des", "3des", "rc5", "idea", "cast",
523 "blowfish", "3idea", "1des-iv32", "rc4", "null", "aes"
524 };
525
526 static const char *ipcomp_p_map[] = {
527 NULL, "oui", "deflate", "lzs",
528 };
529
530 const struct attrmap ipsec_t_map[] = {
531 { NULL, 0, { NULL } },
532 { "lifetype", 3, { NULL, "sec", "kb", }, },
533 { "life", 0, { NULL } },
534 { "group desc", 5, { NULL, "modp768", "modp1024", "EC2N 2^155",
535 "EC2N 2^185", }, },
536 { "enc mode", 3, { NULL, "tunnel", "transport", }, },
537 { "auth", 5, { NULL, "hmac-md5", "hmac-sha1", "1des-mac", "keyed", }, },
538 { "keylen", 0, { NULL } },
539 { "rounds", 0, { NULL } },
540 { "dictsize", 0, { NULL } },
541 { "privalg", 0, { NULL } },
542 };
543
544 const struct attrmap oakley_t_map[] = {
545 { NULL, 0, { NULL } },
546 { "enc", 8, { NULL, "1des", "idea", "blowfish", "rc5",
547 "3des", "cast", "aes", }, },
548 { "hash", 7, { NULL, "md5", "sha1", "tiger",
549 "sha2-256", "sha2-384", "sha2-512", }, },
550 { "auth", 6, { NULL, "preshared", "dss", "rsa sig", "rsa enc",
551 "rsa enc revised", }, },
552 { "group desc", 5, { NULL, "modp768", "modp1024", "EC2N 2^155",
553 "EC2N 2^185", }, },
554 { "group type", 4, { NULL, "MODP", "ECP", "EC2N", }, },
555 { "group prime", 0, { NULL } },
556 { "group gen1", 0, { NULL } },
557 { "group gen2", 0, { NULL } },
558 { "group curve A", 0, { NULL } },
559 { "group curve B", 0, { NULL } },
560 { "lifetype", 3, { NULL, "sec", "kb", }, },
561 { "lifeduration", 0, { NULL } },
562 { "prf", 0, { NULL } },
563 { "keylen", 0, { NULL } },
564 { "field", 0, { NULL } },
565 { "order", 0, { NULL } },
566 };
567
568 static const u_char *
569 isakmp_t_print(const struct isakmp_gen *ext, u_int item_len,
570 const u_char *ep, u_int32_t phase _U_, u_int32_t doi _U_,
571 u_int32_t proto, int depth _U_)
572 {
573 const struct isakmp_pl_t *p;
574 struct isakmp_pl_t t;
575 const u_char *cp;
576 const char *idstr;
577 const struct attrmap *map;
578 size_t nmap;
579 const u_char *ep2;
580
581 printf("%s:", NPSTR(ISAKMP_NPTYPE_T));
582
583 p = (struct isakmp_pl_t *)ext;
584 TCHECK(*p);
585 safememcpy(&t, ext, sizeof(t));
586
587 switch (proto) {
588 case 1:
589 idstr = STR_OR_ID(t.t_id, isakmp_p_map);
590 map = oakley_t_map;
591 nmap = sizeof(oakley_t_map)/sizeof(oakley_t_map[0]);
592 break;
593 case 2:
594 idstr = STR_OR_ID(t.t_id, ah_p_map);
595 map = ipsec_t_map;
596 nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
597 break;
598 case 3:
599 idstr = STR_OR_ID(t.t_id, esp_p_map);
600 map = ipsec_t_map;
601 nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
602 break;
603 case 4:
604 idstr = STR_OR_ID(t.t_id, ipcomp_p_map);
605 map = ipsec_t_map;
606 nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
607 break;
608 default:
609 idstr = NULL;
610 map = NULL;
611 nmap = 0;
612 break;
613 }
614
615 if (idstr)
616 printf(" #%d id=%s ", t.t_no, idstr);
617 else
618 printf(" #%d id=%d ", t.t_no, t.t_id);
619 cp = (u_char *)(p + 1);
620 ep2 = (u_char *)p + item_len;
621 while (cp < ep && cp < ep2) {
622 if (map && nmap) {
623 cp = isakmp_attrmap_print(cp, (ep < ep2) ? ep : ep2,
624 map, nmap);
625 } else
626 cp = isakmp_attr_print(cp, (ep < ep2) ? ep : ep2);
627 }
628 if (ep < ep2)
629 printf("...");
630 return cp;
631 trunc:
632 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_T));
633 return NULL;
634 }
635
636 static const u_char *
637 isakmp_ke_print(const struct isakmp_gen *ext, u_int item_len _U_,
638 const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_,
639 u_int32_t proto _U_, int depth _U_)
640 {
641 struct isakmp_gen e;
642
643 printf("%s:", NPSTR(ISAKMP_NPTYPE_KE));
644
645 TCHECK(*ext);
646 safememcpy(&e, ext, sizeof(e));
647 printf(" key len=%d", ntohs(e.len) - 4);
648 if (2 < vflag && 4 < ntohs(e.len)) {
649 printf(" ");
650 if (!rawprint((caddr_t)(ext + 1), ntohs(e.len) - 4))
651 goto trunc;
652 }
653 return (u_char *)ext + ntohs(e.len);
654 trunc:
655 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_KE));
656 return NULL;
657 }
658
659 static const u_char *
660 isakmp_id_print(const struct isakmp_gen *ext, u_int item_len _U_,
661 const u_char *ep _U_, u_int32_t phase, u_int32_t doi _U_,
662 u_int32_t proto _U_, int depth _U_)
663 {
664 #define USE_IPSECDOI_IN_PHASE1 1
665 const struct isakmp_pl_id *p;
666 struct isakmp_pl_id id;
667 static const char *idtypestr[] = {
668 "IPv4", "IPv4net", "IPv6", "IPv6net",
669 };
670 static const char *ipsecidtypestr[] = {
671 NULL, "IPv4", "FQDN", "user FQDN", "IPv4net", "IPv6",
672 "IPv6net", "IPv4range", "IPv6range", "ASN1 DN", "ASN1 GN",
673 "keyid",
674 };
675 int len;
676 const u_char *data;
677
678 printf("%s:", NPSTR(ISAKMP_NPTYPE_ID));
679
680 p = (struct isakmp_pl_id *)ext;
681 TCHECK(*p);
682 safememcpy(&id, ext, sizeof(id));
683 if (sizeof(*p) < item_len) {
684 data = (u_char *)(p + 1);
685 len = item_len - sizeof(*p);
686 } else {
687 data = NULL;
688 len = 0;
689 }
690
691 #if 0 /*debug*/
692 printf(" [phase=%d doi=%d proto=%d]", phase, doi, proto);
693 #endif
694 switch (phase) {
695 #ifndef USE_IPSECDOI_IN_PHASE1
696 case 1:
697 #endif
698 default:
699 printf(" idtype=%s", STR_OR_ID(id.d.id_type, idtypestr));
700 printf(" doi_data=%u",
701 (u_int32_t)(ntohl(id.d.doi_data) & 0xffffff));
702 break;
703
704 #ifdef USE_IPSECDOI_IN_PHASE1
705 case 1:
706 #endif
707 case 2:
708 {
709 const struct ipsecdoi_id *p;
710 struct ipsecdoi_id id;
711 struct protoent *pe;
712
713 p = (struct ipsecdoi_id *)ext;
714 TCHECK(*p);
715 safememcpy(&id, ext, sizeof(id));
716 printf(" idtype=%s", STR_OR_ID(id.type, ipsecidtypestr));
717 if (id.proto_id) {
718 #ifndef WIN32
719 setprotoent(1);
720 #endif /* WIN32 */
721 pe = getprotobynumber(id.proto_id);
722 if (pe)
723 printf(" protoid=%s", pe->p_name);
724 #ifndef WIN32
725 endprotoent();
726 #endif /* WIN32 */
727 } else {
728 /* it DOES NOT mean IPPROTO_IP! */
729 printf(" protoid=%s", "0");
730 }
731 printf(" port=%d", ntohs(id.port));
732 if (!len)
733 break;
734 if (data == NULL)
735 goto trunc;
736 TCHECK2(*data, len);
737 switch (id.type) {
738 case IPSECDOI_ID_IPV4_ADDR:
739 if (len < 4)
740 printf(" len=%d [bad: < 4]", len);
741 else
742 printf(" len=%d %s", len, ipaddr_string(data));
743 len = 0;
744 break;
745 case IPSECDOI_ID_FQDN:
746 case IPSECDOI_ID_USER_FQDN:
747 {
748 int i;
749 printf(" len=%d ", len);
750 for (i = 0; i < len; i++)
751 safeputchar(data[i]);
752 len = 0;
753 break;
754 }
755 case IPSECDOI_ID_IPV4_ADDR_SUBNET:
756 {
757 const u_char *mask;
758 if (len < 8)
759 printf(" len=%d [bad: < 8]", len);
760 else {
761 mask = data + sizeof(struct in_addr);
762 printf(" len=%d %s/%u.%u.%u.%u", len,
763 ipaddr_string(data),
764 mask[0], mask[1], mask[2], mask[3]);
765 }
766 len = 0;
767 break;
768 }
769 #ifdef INET6
770 case IPSECDOI_ID_IPV6_ADDR:
771 if (len < 16)
772 printf(" len=%d [bad: < 16]", len);
773 else
774 printf(" len=%d %s", len, ip6addr_string(data));
775 len = 0;
776 break;
777 case IPSECDOI_ID_IPV6_ADDR_SUBNET:
778 {
779 const u_int32_t *mask;
780 if (len < 20)
781 printf(" len=%d [bad: < 20]", len);
782 else {
783 mask = (u_int32_t *)(data + sizeof(struct in6_addr));
784 /*XXX*/
785 printf(" len=%d %s/0x%08x%08x%08x%08x", len,
786 ip6addr_string(data),
787 mask[0], mask[1], mask[2], mask[3]);
788 }
789 len = 0;
790 break;
791 }
792 #endif /*INET6*/
793 case IPSECDOI_ID_IPV4_ADDR_RANGE:
794 if (len < 8)
795 printf(" len=%d [bad: < 8]", len);
796 else {
797 printf(" len=%d %s-%s", len,
798 ipaddr_string(data),
799 ipaddr_string(data + sizeof(struct in_addr)));
800 }
801 len = 0;
802 break;
803 #ifdef INET6
804 case IPSECDOI_ID_IPV6_ADDR_RANGE:
805 if (len < 32)
806 printf(" len=%d [bad: < 32]", len);
807 else {
808 printf(" len=%d %s-%s", len,
809 ip6addr_string(data),
810 ip6addr_string(data + sizeof(struct in6_addr)));
811 }
812 len = 0;
813 break;
814 #endif /*INET6*/
815 case IPSECDOI_ID_DER_ASN1_DN:
816 case IPSECDOI_ID_DER_ASN1_GN:
817 case IPSECDOI_ID_KEY_ID:
818 break;
819 }
820 break;
821 }
822 }
823 if (data && len) {
824 printf(" len=%d", len);
825 if (2 < vflag) {
826 printf(" ");
827 if (!rawprint((caddr_t)data, len))
828 goto trunc;
829 }
830 }
831 return (u_char *)ext + item_len;
832 trunc:
833 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_ID));
834 return NULL;
835 }
836
837 static const u_char *
838 isakmp_cert_print(const struct isakmp_gen *ext, u_int item_len _U_,
839 const u_char *ep _U_, u_int32_t phase _U_,
840 u_int32_t doi0 _U_,
841 u_int32_t proto0 _U_, int depth _U_)
842 {
843 const struct isakmp_pl_cert *p;
844 struct isakmp_pl_cert cert;
845 static const char *certstr[] = {
846 "none", "pkcs7", "pgp", "dns",
847 "x509sign", "x509ke", "kerberos", "crl",
848 "arl", "spki", "x509attr",
849 };
850
851 printf("%s:", NPSTR(ISAKMP_NPTYPE_CERT));
852
853 p = (struct isakmp_pl_cert *)ext;
854 TCHECK(*p);
855 safememcpy(&cert, ext, sizeof(cert));
856 printf(" len=%d", item_len - 4);
857 printf(" type=%s", STR_OR_ID((cert.encode), certstr));
858 if (2 < vflag && 4 < item_len) {
859 printf(" ");
860 if (!rawprint((caddr_t)(ext + 1), item_len - 4))
861 goto trunc;
862 }
863 return (u_char *)ext + item_len;
864 trunc:
865 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_CERT));
866 return NULL;
867 }
868
869 static const u_char *
870 isakmp_cr_print(const struct isakmp_gen *ext, u_int item_len _U_,
871 const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi0 _U_,
872 u_int32_t proto0 _U_, int depth _U_)
873 {
874 const struct isakmp_pl_cert *p;
875 struct isakmp_pl_cert cert;
876 static const char *certstr[] = {
877 "none", "pkcs7", "pgp", "dns",
878 "x509sign", "x509ke", "kerberos", "crl",
879 "arl", "spki", "x509attr",
880 };
881
882 printf("%s:", NPSTR(ISAKMP_NPTYPE_CR));
883
884 p = (struct isakmp_pl_cert *)ext;
885 TCHECK(*p);
886 safememcpy(&cert, ext, sizeof(cert));
887 printf(" len=%d", item_len - 4);
888 printf(" type=%s", STR_OR_ID((cert.encode), certstr));
889 if (2 < vflag && 4 < item_len) {
890 printf(" ");
891 if (!rawprint((caddr_t)(ext + 1), item_len - 4))
892 goto trunc;
893 }
894 return (u_char *)ext + item_len;
895 trunc:
896 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_CR));
897 return NULL;
898 }
899
900 static const u_char *
901 isakmp_hash_print(const struct isakmp_gen *ext, u_int item_len _U_,
902 const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_,
903 u_int32_t proto _U_, int depth _U_)
904 {
905 struct isakmp_gen e;
906
907 printf("%s:", NPSTR(ISAKMP_NPTYPE_HASH));
908
909 TCHECK(*ext);
910 safememcpy(&e, ext, sizeof(e));
911 printf(" len=%d", ntohs(e.len) - 4);
912 if (2 < vflag && 4 < ntohs(e.len)) {
913 printf(" ");
914 if (!rawprint((caddr_t)(ext + 1), ntohs(e.len) - 4))
915 goto trunc;
916 }
917 return (u_char *)ext + ntohs(e.len);
918 trunc:
919 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_HASH));
920 return NULL;
921 }
922
923 static const u_char *
924 isakmp_sig_print(const struct isakmp_gen *ext, u_int item_len _U_,
925 const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_,
926 u_int32_t proto _U_, int depth _U_)
927 {
928 struct isakmp_gen e;
929
930 printf("%s:", NPSTR(ISAKMP_NPTYPE_SIG));
931
932 TCHECK(*ext);
933 safememcpy(&e, ext, sizeof(e));
934 printf(" len=%d", ntohs(e.len) - 4);
935 if (2 < vflag && 4 < ntohs(e.len)) {
936 printf(" ");
937 if (!rawprint((caddr_t)(ext + 1), ntohs(e.len) - 4))
938 goto trunc;
939 }
940 return (u_char *)ext + ntohs(e.len);
941 trunc:
942 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_SIG));
943 return NULL;
944 }
945
946 static const u_char *
947 isakmp_nonce_print(const struct isakmp_gen *ext,
948 u_int item_len _U_,
949 const u_char *ep _U_,
950 u_int32_t phase _U_, u_int32_t doi _U_,
951 u_int32_t proto _U_, int depth _U_)
952 {
953 struct isakmp_gen e;
954
955 printf("%s:", NPSTR(ISAKMP_NPTYPE_NONCE));
956
957 TCHECK(*ext);
958 safememcpy(&e, ext, sizeof(e));
959 printf(" n len=%d", ntohs(e.len) - 4);
960 if (2 < vflag && 4 < ntohs(e.len)) {
961 printf(" ");
962 if (!rawprint((caddr_t)(ext + 1), ntohs(e.len) - 4))
963 goto trunc;
964 }
965 return (u_char *)ext + ntohs(e.len);
966 trunc:
967 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_NONCE));
968 return NULL;
969 }
970
971 static const u_char *
972 isakmp_n_print(const struct isakmp_gen *ext, u_int item_len,
973 const u_char *ep, u_int32_t phase, u_int32_t doi0 _U_,
974 u_int32_t proto0 _U_, int depth)
975 {
976 struct isakmp_pl_n *p, n;
977 const u_char *cp;
978 u_char *ep2;
979 u_int32_t doi;
980 u_int32_t proto;
981 static const char *notify_error_str[] = {
982 NULL, "INVALID-PAYLOAD-TYPE",
983 "DOI-NOT-SUPPORTED", "SITUATION-NOT-SUPPORTED",
984 "INVALID-COOKIE", "INVALID-MAJOR-VERSION",
985 "INVALID-MINOR-VERSION", "INVALID-EXCHANGE-TYPE",
986 "INVALID-FLAGS", "INVALID-MESSAGE-ID",
987 "INVALID-PROTOCOL-ID", "INVALID-SPI",
988 "INVALID-TRANSFORM-ID", "ATTRIBUTES-NOT-SUPPORTED",
989 "NO-PROPOSAL-CHOSEN", "BAD-PROPOSAL-SYNTAX",
990 "PAYLOAD-MALFORMED", "INVALID-KEY-INFORMATION",
991 "INVALID-ID-INFORMATION", "INVALID-CERT-ENCODING",
992 "INVALID-CERTIFICATE", "CERT-TYPE-UNSUPPORTED",
993 "INVALID-CERT-AUTHORITY", "INVALID-HASH-INFORMATION",
994 "AUTHENTICATION-FAILED", "INVALID-SIGNATURE",
995 "ADDRESS-NOTIFICATION", "NOTIFY-SA-LIFETIME",
996 "CERTIFICATE-UNAVAILABLE", "UNSUPPORTED-EXCHANGE-TYPE",
997 "UNEQUAL-PAYLOAD-LENGTHS",
998 };
999 static const char *ipsec_notify_error_str[] = {
1000 "RESERVED",
1001 };
1002 static const char *notify_status_str[] = {
1003 "CONNECTED",
1004 };
1005 static const char *ipsec_notify_status_str[] = {
1006 "RESPONDER-LIFETIME", "REPLAY-STATUS",
1007 "INITIAL-CONTACT",
1008 };
1009 /* NOTE: these macro must be called with x in proper range */
1010
1011 /* 0 - 8191 */
1012 #define NOTIFY_ERROR_STR(x) \
1013 STR_OR_ID((x), notify_error_str)
1014
1015 /* 8192 - 16383 */
1016 #define IPSEC_NOTIFY_ERROR_STR(x) \
1017 STR_OR_ID((u_int)((x) - 8192), ipsec_notify_error_str)
1018
1019 /* 16384 - 24575 */
1020 #define NOTIFY_STATUS_STR(x) \
1021 STR_OR_ID((u_int)((x) - 16384), notify_status_str)
1022
1023 /* 24576 - 32767 */
1024 #define IPSEC_NOTIFY_STATUS_STR(x) \
1025 STR_OR_ID((u_int)((x) - 24576), ipsec_notify_status_str)
1026
1027 printf("%s:", NPSTR(ISAKMP_NPTYPE_N));
1028
1029 p = (struct isakmp_pl_n *)ext;
1030 TCHECK(*p);
1031 safememcpy(&n, ext, sizeof(n));
1032 doi = ntohl(n.doi);
1033 proto = n.prot_id;
1034 if (doi != 1) {
1035 printf(" doi=%d", doi);
1036 printf(" proto=%d", proto);
1037 if (ntohs(n.type) < 8192)
1038 printf(" type=%s", NOTIFY_ERROR_STR(ntohs(n.type)));
1039 else if (ntohs(n.type) < 16384)
1040 printf(" type=%s", numstr(ntohs(n.type)));
1041 else if (ntohs(n.type) < 24576)
1042 printf(" type=%s", NOTIFY_STATUS_STR(ntohs(n.type)));
1043 else
1044 printf(" type=%s", numstr(ntohs(n.type)));
1045 if (n.spi_size) {
1046 printf(" spi=");
1047 if (!rawprint((caddr_t)(p + 1), n.spi_size))
1048 goto trunc;
1049 }
1050 return (u_char *)(p + 1) + n.spi_size;
1051 }
1052
1053 printf(" doi=ipsec");
1054 printf(" proto=%s", PROTOIDSTR(proto));
1055 if (ntohs(n.type) < 8192)
1056 printf(" type=%s", NOTIFY_ERROR_STR(ntohs(n.type)));
1057 else if (ntohs(n.type) < 16384)
1058 printf(" type=%s", IPSEC_NOTIFY_ERROR_STR(ntohs(n.type)));
1059 else if (ntohs(n.type) < 24576)
1060 printf(" type=%s", NOTIFY_STATUS_STR(ntohs(n.type)));
1061 else if (ntohs(n.type) < 32768)
1062 printf(" type=%s", IPSEC_NOTIFY_STATUS_STR(ntohs(n.type)));
1063 else
1064 printf(" type=%s", numstr(ntohs(n.type)));
1065 if (n.spi_size) {
1066 printf(" spi=");
1067 if (!rawprint((caddr_t)(p + 1), n.spi_size))
1068 goto trunc;
1069 }
1070
1071 cp = (u_char *)(p + 1) + n.spi_size;
1072 ep2 = (u_char *)p + item_len;
1073
1074 if (cp < ep) {
1075 printf(" orig=(");
1076 switch (ntohs(n.type)) {
1077 case IPSECDOI_NTYPE_RESPONDER_LIFETIME:
1078 {
1079 const struct attrmap *map = oakley_t_map;
1080 size_t nmap = sizeof(oakley_t_map)/sizeof(oakley_t_map[0]);
1081 while (cp < ep && cp < ep2) {
1082 cp = isakmp_attrmap_print(cp,
1083 (ep < ep2) ? ep : ep2, map, nmap);
1084 }
1085 break;
1086 }
1087 case IPSECDOI_NTYPE_REPLAY_STATUS:
1088 printf("replay detection %sabled",
1089 (*(u_int32_t *)cp) ? "en" : "dis");
1090 break;
1091 case ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN:
1092 if (isakmp_sub_print(ISAKMP_NPTYPE_SA,
1093 (struct isakmp_gen *)cp, ep, phase, doi, proto,
1094 depth) == NULL)
1095 return NULL;
1096 break;
1097 default:
1098 /* NULL is dummy */
1099 isakmp_print(gndo, cp,
1100 item_len - sizeof(*p) - n.spi_size,
1101 NULL);
1102 }
1103 printf(")");
1104 }
1105 return (u_char *)ext + item_len;
1106 trunc:
1107 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_N));
1108 return NULL;
1109 }
1110
1111 static const u_char *
1112 isakmp_d_print(const struct isakmp_gen *ext, u_int item_len _U_,
1113 const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi0 _U_,
1114 u_int32_t proto0 _U_, int depth _U_)
1115 {
1116 const struct isakmp_pl_d *p;
1117 struct isakmp_pl_d d;
1118 const u_int8_t *q;
1119 u_int32_t doi;
1120 u_int32_t proto;
1121 int i;
1122
1123 printf("%s:", NPSTR(ISAKMP_NPTYPE_D));
1124
1125 p = (struct isakmp_pl_d *)ext;
1126 TCHECK(*p);
1127 safememcpy(&d, ext, sizeof(d));
1128 doi = ntohl(d.doi);
1129 proto = d.prot_id;
1130 if (doi != 1) {
1131 printf(" doi=%u", doi);
1132 printf(" proto=%u", proto);
1133 } else {
1134 printf(" doi=ipsec");
1135 printf(" proto=%s", PROTOIDSTR(proto));
1136 }
1137 printf(" spilen=%u", d.spi_size);
1138 printf(" nspi=%u", ntohs(d.num_spi));
1139 printf(" spi=");
1140 q = (u_int8_t *)(p + 1);
1141 for (i = 0; i < ntohs(d.num_spi); i++) {
1142 if (i != 0)
1143 printf(",");
1144 if (!rawprint((caddr_t)q, d.spi_size))
1145 goto trunc;
1146 q += d.spi_size;
1147 }
1148 return q;
1149 trunc:
1150 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_D));
1151 return NULL;
1152 }
1153
1154 static const u_char *
1155 isakmp_vid_print(const struct isakmp_gen *ext,
1156 u_int item_len _U_, const u_char *ep _U_,
1157 u_int32_t phase _U_, u_int32_t doi _U_,
1158 u_int32_t proto _U_, int depth _U_)
1159 {
1160 struct isakmp_gen e;
1161
1162 printf("%s:", NPSTR(ISAKMP_NPTYPE_VID));
1163
1164 TCHECK(*ext);
1165 safememcpy(&e, ext, sizeof(e));
1166 printf(" len=%d", ntohs(e.len) - 4);
1167 if (2 < vflag && 4 < ntohs(e.len)) {
1168 printf(" ");
1169 if (!rawprint((caddr_t)(ext + 1), ntohs(e.len) - 4))
1170 goto trunc;
1171 }
1172 return (u_char *)ext + ntohs(e.len);
1173 trunc:
1174 printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_VID));
1175 return NULL;
1176 }
1177
1178 static const u_char *
1179 isakmp_sub0_print(u_char np, const struct isakmp_gen *ext, const u_char *ep,
1180 u_int32_t phase, u_int32_t doi, u_int32_t proto, int depth)
1181 {
1182 const u_char *cp;
1183 struct isakmp_gen e;
1184 u_int item_len;
1185
1186 cp = (u_char *)ext;
1187 TCHECK(*ext);
1188 safememcpy(&e, ext, sizeof(e));
1189
1190 /*
1191 * Since we can't have a payload length of less than 4 bytes,
1192 * we need to bail out here if the generic header is nonsensical
1193 * or truncated, otherwise we could loop forever processing
1194 * zero-length items or otherwise misdissect the packet.
1195 */
1196 item_len = ntohs(e.len);
1197 if (item_len <= 4)
1198 return NULL;
1199
1200 if (NPFUNC(np)) {
1201 /*
1202 * XXX - what if item_len is too short, or too long,
1203 * for this payload type?
1204 */
1205 cp = (*npfunc[np])(ext, item_len, ep, phase, doi, proto, depth);
1206 } else {
1207 printf("%s", NPSTR(np));
1208 cp += item_len;
1209 }
1210
1211 return cp;
1212 trunc:
1213 printf(" [|isakmp]");
1214 return NULL;
1215 }
1216
1217 static const u_char *
1218 isakmp_sub_print(u_char np, const struct isakmp_gen *ext, const u_char *ep,
1219 u_int32_t phase, u_int32_t doi, u_int32_t proto, int depth)
1220 {
1221 const u_char *cp;
1222 int i;
1223 struct isakmp_gen e;
1224
1225 cp = (const u_char *)ext;
1226
1227 while (np) {
1228 TCHECK(*ext);
1229
1230 safememcpy(&e, ext, sizeof(e));
1231
1232 TCHECK2(*ext, ntohs(e.len));
1233
1234 depth++;
1235 printf("\n");
1236 for (i = 0; i < depth; i++)
1237 printf(" ");
1238 printf("(");
1239 cp = isakmp_sub0_print(np, ext, ep, phase, doi, proto, depth);
1240 printf(")");
1241 depth--;
1242
1243 if (cp == NULL) {
1244 /* Zero-length subitem */
1245 return NULL;
1246 }
1247
1248 np = e.np;
1249 ext = (struct isakmp_gen *)cp;
1250 }
1251 return cp;
1252 trunc:
1253 printf(" [|%s]", NPSTR(np));
1254 return NULL;
1255 }
1256
1257 static char *
1258 numstr(int x)
1259 {
1260 static char buf[20];
1261 snprintf(buf, sizeof(buf), "#%d", x);
1262 return buf;
1263 }
1264
1265 /*
1266 * some compiler tries to optimize memcpy(), using the alignment constraint
1267 * on the argument pointer type. by using this function, we try to avoid the
1268 * optimization.
1269 */
1270 static void
1271 safememcpy(void *p, const void *q, size_t l)
1272 {
1273 memcpy(p, q, l);
1274 }
1275
1276 void
1277 isakmp_print(netdissect_options *ndo,
1278 const u_char *bp, u_int length,
1279 const u_char *bp2)
1280 {
1281 const struct isakmp *p;
1282 struct isakmp base;
1283 const u_char *ep;
1284 u_char np;
1285 int i;
1286 int phase;
1287 int major, minor;
1288
1289 p = (const struct isakmp *)bp;
1290 ep = ndo->ndo_snapend;
1291
1292 if ((struct isakmp *)ep < p + 1) {
1293 printf("[|isakmp]");
1294 return;
1295 }
1296
1297 safememcpy(&base, p, sizeof(base));
1298
1299 printf("isakmp");
1300 if (vflag) {
1301 major = (base.vers & ISAKMP_VERS_MAJOR)
1302 >> ISAKMP_VERS_MAJOR_SHIFT;
1303 minor = (base.vers & ISAKMP_VERS_MINOR)
1304 >> ISAKMP_VERS_MINOR_SHIFT;
1305 printf(" %d.%d", major, minor);
1306 }
1307
1308 if (vflag) {
1309 printf(" msgid ");
1310 rawprint((caddr_t)&base.msgid, sizeof(base.msgid));
1311 }
1312
1313 if (1 < vflag) {
1314 printf(" cookie ");
1315 rawprint((caddr_t)&base.i_ck, sizeof(base.i_ck));
1316 printf("->");
1317 rawprint((caddr_t)&base.r_ck, sizeof(base.r_ck));
1318 }
1319 printf(":");
1320
1321 phase = (*(u_int32_t *)base.msgid == 0) ? 1 : 2;
1322 if (phase == 1)
1323 printf(" phase %d", phase);
1324 else
1325 printf(" phase %d/others", phase);
1326
1327 i = cookie_find(&base.i_ck);
1328 if (i < 0) {
1329 if (iszero((u_char *)&base.r_ck, sizeof(base.r_ck))) {
1330 /* the first packet */
1331 printf(" I");
1332 if (bp2)
1333 cookie_record(&base.i_ck, bp2);
1334 } else
1335 printf(" ?");
1336 } else {
1337 if (bp2 && cookie_isinitiator(i, bp2))
1338 printf(" I");
1339 else if (bp2 && cookie_isresponder(i, bp2))
1340 printf(" R");
1341 else
1342 printf(" ?");
1343 }
1344
1345 printf(" %s", ETYPESTR(base.etype));
1346 if (base.flags) {
1347 printf("[%s%s]", base.flags & ISAKMP_FLAG_E ? "E" : "",
1348 base.flags & ISAKMP_FLAG_C ? "C" : "");
1349 }
1350
1351 if (vflag) {
1352 const struct isakmp_gen *ext;
1353 int nparen;
1354
1355 #define CHECKLEN(p, np) \
1356 if (ep < (u_char *)(p)) { \
1357 printf(" [|%s]", NPSTR(np)); \
1358 goto done; \
1359 }
1360
1361 printf(":");
1362
1363 /* regardless of phase... */
1364 if (base.flags & ISAKMP_FLAG_E) {
1365 /*
1366 * encrypted, nothing we can do right now.
1367 * we hope to decrypt the packet in the future...
1368 */
1369 printf(" [encrypted %s]", NPSTR(base.np));
1370 goto done;
1371 }
1372
1373 nparen = 0;
1374 CHECKLEN(p + 1, base.np)
1375
1376 np = base.np;
1377 ext = (struct isakmp_gen *)(p + 1);
1378 isakmp_sub_print(np, ext, ep, phase, 0, 0, 0);
1379 }
1380
1381 done:
1382 if (vflag) {
1383 if (ntohl(base.len) != length) {
1384 printf(" (len mismatch: isakmp %u/ip %u)",
1385 (u_int32_t)ntohl(base.len), length);
1386 }
1387 }
1388 }
1389
1390 void
1391 isakmp_rfc3948_print(netdissect_options *ndo,
1392 const u_char *bp, u_int length,
1393 const u_char *bp2)
1394 {
1395 const u_char *ep;
1396 ep = ndo->ndo_snapend;
1397
1398 if(length == 1 && bp[0]==0xff) {
1399 ND_PRINT((ndo, "isakmp-nat-keep-alive"));
1400 return;
1401 }
1402
1403 if(length < 4) {
1404 goto trunc;
1405 }
1406
1407 /*
1408 * see if this is an IKE packet
1409 */
1410 if(bp[0]==0 && bp[1]==0 && bp[2]==0 && bp[3]==0) {
1411 ND_PRINT((ndo, "NONESP-encap: "));
1412 isakmp_print(ndo, bp+4, length-4, bp2);
1413 return;
1414 }
1415
1416 /* must be an ESP packet */
1417 {
1418 int nh, enh, padlen;
1419 int advance;
1420
1421 ND_PRINT((ndo, "UDP-encap: "));
1422
1423 advance = esp_print(ndo, bp, length, bp2, &enh, &padlen);
1424 if(advance <= 0)
1425 return;
1426
1427 bp += advance;
1428 length -= advance + padlen;
1429 nh = enh & 0xff;
1430
1431 ip_print_inner(ndo, bp, length, nh, bp2);
1432 return;
1433 }
1434
1435 trunc:
1436 printf("[|isakmp]");
1437 return;
1438 }
1439
1440 /*
1441 * Local Variables:
1442 * c-style: whitesmith
1443 * c-basic-offset: 8
1444 * End:
1445 */
1446
1447
1448
1449
DragonFly BSD