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dma: bump man page date
[dragonfly.git] / contrib / tcpdump / print-dhcp6.c
blobec0df763c0cf454a71003f70f467b885ea58c507
1 /*
2 * Copyright (C) 1998 and 1999 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 * RFC3315: DHCPv6
31 * supported DHCPv6 options:
32 * RFC3319,
33 * RFC3633,
34 * RFC3646,
35 * RFC3898,
36 * RFC4075,
37 * RFC4242,
38 * RFC4280,
39 */
40
41 #ifndef lint
42 static const char rcsid[] _U_ =
43 "@(#) $Header: /tcpdump/master/tcpdump/print-dhcp6.c,v 1.36.2.1 2008-02-06 10:26:27 guy Exp $";
44 #endif
45
46 #ifdef HAVE_CONFIG_H
47 #include "config.h"
48 #endif
49
50 #include <tcpdump-stdinc.h>
51
52 #include <stdio.h>
53 #include <string.h>
54
55 #include "interface.h"
56 #include "addrtoname.h"
57 #include "extract.h"
58
59 /* lease duration */
60 #define DHCP6_DURATITION_INFINITE 0xffffffff
61
62 /* Error Values */
63 #define DH6ERR_FAILURE 16
64 #define DH6ERR_AUTHFAIL 17
65 #define DH6ERR_POORLYFORMED 18
66 #define DH6ERR_UNAVAIL 19
67 #define DH6ERR_OPTUNAVAIL 20
68
69 /* Message type */
70 #define DH6_SOLICIT 1
71 #define DH6_ADVERTISE 2
72 #define DH6_REQUEST 3
73 #define DH6_CONFIRM 4
74 #define DH6_RENEW 5
75 #define DH6_REBIND 6
76 #define DH6_REPLY 7
77 #define DH6_RELEASE 8
78 #define DH6_DECLINE 9
79 #define DH6_RECONFIGURE 10
80 #define DH6_INFORM_REQ 11
81 #define DH6_RELAY_FORW 12
82 #define DH6_RELAY_REPLY 13
83 #define DH6_LEASEQUERY 14
84 #define DH6_LQ_REPLY 15
85
86 /* DHCP6 base packet format */
87 struct dhcp6 {
88 union {
89 u_int8_t m;
90 u_int32_t x;
91 } dh6_msgtypexid;
92 /* options follow */
93 };
94 #define dh6_msgtype dh6_msgtypexid.m
95 #define dh6_xid dh6_msgtypexid.x
96 #define DH6_XIDMASK 0x00ffffff
97
98 /* DHCPv6 relay messages */
99 struct dhcp6_relay {
100 u_int8_t dh6relay_msgtype;
101 u_int8_t dh6relay_hcnt;
102 u_int8_t dh6relay_linkaddr[16]; /* XXX: badly aligned */
103 u_int8_t dh6relay_peeraddr[16];
104 /* options follow */
105 };
106
107 /* options */
108 #define DH6OPT_CLIENTID 1
109 #define DH6OPT_SERVERID 2
110 #define DH6OPT_IA_NA 3
111 #define DH6OPT_IA_TA 4
112 #define DH6OPT_IA_ADDR 5
113 #define DH6OPT_ORO 6
114 #define DH6OPT_PREFERENCE 7
115 # define DH6OPT_PREF_MAX 255
116 #define DH6OPT_ELAPSED_TIME 8
117 #define DH6OPT_RELAY_MSG 9
118 /*#define DH6OPT_SERVER_MSG 10 deprecated */
119 #define DH6OPT_AUTH 11
120 # define DH6OPT_AUTHPROTO_DELAYED 2
121 # define DH6OPT_AUTHPROTO_RECONFIG 3
122 # define DH6OPT_AUTHALG_HMACMD5 1
123 # define DH6OPT_AUTHRDM_MONOCOUNTER 0
124 # define DH6OPT_AUTHRECONFIG_KEY 1
125 # define DH6OPT_AUTHRECONFIG_HMACMD5 2
126 #define DH6OPT_UNICAST 12
127 #define DH6OPT_STATUS_CODE 13
128 # define DH6OPT_STCODE_SUCCESS 0
129 # define DH6OPT_STCODE_UNSPECFAIL 1
130 # define DH6OPT_STCODE_NOADDRAVAIL 2
131 # define DH6OPT_STCODE_NOBINDING 3
132 # define DH6OPT_STCODE_NOTONLINK 4
133 # define DH6OPT_STCODE_USEMULTICAST 5
134 # define DH6OPT_STCODE_NOPREFIXAVAIL 6
135 # define DH6OPT_STCODE_UNKNOWNQUERYTYPE 7
136 # define DH6OPT_STCODE_MALFORMEDQUERY 8
137 # define DH6OPT_STCODE_NOTCONFIGURED 9
138 # define DH6OPT_STCODE_NOTALLOWED 10
139 #define DH6OPT_RAPID_COMMIT 14
140 #define DH6OPT_USER_CLASS 15
141 #define DH6OPT_VENDOR_CLASS 16
142 #define DH6OPT_VENDOR_OPTS 17
143 #define DH6OPT_INTERFACE_ID 18
144 #define DH6OPT_RECONF_MSG 19
145 #define DH6OPT_RECONF_ACCEPT 20
146 #define DH6OPT_SIP_SERVER_D 21
147 #define DH6OPT_SIP_SERVER_A 22
148 #define DH6OPT_DNS 23
149 #define DH6OPT_DNSNAME 24
150 #define DH6OPT_IA_PD 25
151 #define DH6OPT_IA_PD_PREFIX 26
152 #define DH6OPT_NIS_SERVERS 27
153 #define DH6OPT_NISP_SERVERS 28
154 #define DH6OPT_NIS_NAME 29
155 #define DH6OPT_NISP_NAME 30
156 #define DH6OPT_NTP_SERVERS 31
157 #define DH6OPT_LIFETIME 32
158 #define DH6OPT_BCMCS_SERVER_D 33
159 #define DH6OPT_BCMCS_SERVER_A 34
160 #define DH6OPT_GEOCONF_CIVIC 36
161 #define DH6OPT_REMOTE_ID 37
162 #define DH6OPT_SUBSCRIBER_ID 38
163 #define DH6OPT_CLIENT_FQDN 39
164 #define DH6OPT_PANA_AGENT 40
165 #define DH6OPT_NEW_POSIX_TIMEZONE 41
166 #define DH6OPT_NEW_TZDB_TIMEZONE 42
167 #define DH6OPT_ERO 43
168 #define DH6OPT_LQ_QUERY 44
169 #define DH6OPT_CLIENT_DATA 45
170 #define DH6OPT_CLT_TIME 46
171 #define DH6OPT_LQ_RELAY_DATA 47
172 #define DH6OPT_LQ_CLIENT_LINK 48
173
174 struct dhcp6opt {
175 u_int16_t dh6opt_type;
176 u_int16_t dh6opt_len;
177 /* type-dependent data follows */
178 };
179
180 struct dhcp6_ia {
181 u_int16_t dh6opt_ia_type;
182 u_int16_t dh6opt_ia_len;
183 u_int32_t dh6opt_ia_iaid;
184 u_int32_t dh6opt_ia_t1;
185 u_int32_t dh6opt_ia_t2;
186 };
187
188 struct dhcp6_ia_addr {
189 u_int16_t dh6opt_ia_addr_type;
190 u_int16_t dh6opt_ia_addr_len;
191 struct in6_addr dh6opt_ia_addr_addr;
192 u_int32_t dh6opt_ia_addr_pltime;
193 u_int32_t dh6opt_ia_addr_vltime;
194 } __attribute__ ((__packed__));
195
196 struct dhcp6_ia_prefix {
197 u_int16_t dh6opt_ia_prefix_type;
198 u_int16_t dh6opt_ia_prefix_len;
199 u_int32_t dh6opt_ia_prefix_pltime;
200 u_int32_t dh6opt_ia_prefix_vltime;
201 u_int8_t dh6opt_ia_prefix_plen;
202 struct in6_addr dh6opt_ia_prefix_addr;
203 } __attribute__ ((__packed__));
204
205 struct dhcp6_auth {
206 u_int16_t dh6opt_auth_type;
207 u_int16_t dh6opt_auth_len;
208 u_int8_t dh6opt_auth_proto;
209 u_int8_t dh6opt_auth_alg;
210 u_int8_t dh6opt_auth_rdm;
211 u_int8_t dh6opt_auth_rdinfo[8];
212 /* authentication information follows */
213 } __attribute__ ((__packed__));
214
215 static const char *
216 dhcp6opt_name(int type)
217 {
218 static char genstr[sizeof("opt_65535") + 1]; /* XXX thread unsafe */
219
220 if (type > 65535)
221 return "INVALID option";
222
223 switch(type) {
224 case DH6OPT_CLIENTID:
225 return "client ID";
226 case DH6OPT_SERVERID:
227 return "server ID";
228 case DH6OPT_IA_NA:
229 return "IA_NA";
230 case DH6OPT_IA_TA:
231 return "IA_TA";
232 case DH6OPT_IA_ADDR:
233 return "IA_ADDR";
234 case DH6OPT_ORO:
235 return "option request";
236 case DH6OPT_PREFERENCE:
237 return "preference";
238 case DH6OPT_ELAPSED_TIME:
239 return "elapsed time";
240 case DH6OPT_RELAY_MSG:
241 return "relay message";
242 case DH6OPT_AUTH:
243 return "authentication";
244 case DH6OPT_UNICAST:
245 return "server unicast";
246 case DH6OPT_STATUS_CODE:
247 return "status code";
248 case DH6OPT_RAPID_COMMIT:
249 return "rapid commit";
250 case DH6OPT_USER_CLASS:
251 return "user class";
252 case DH6OPT_VENDOR_CLASS:
253 return "vendor class";
254 case DH6OPT_VENDOR_OPTS:
255 return "vendor-specific info";
256 case DH6OPT_INTERFACE_ID:
257 return "interface ID";
258 case DH6OPT_RECONF_MSG:
259 return "reconfigure message";
260 case DH6OPT_RECONF_ACCEPT:
261 return "reconfigure accept";
262 case DH6OPT_SIP_SERVER_D:
263 return "SIP servers domain";
264 case DH6OPT_SIP_SERVER_A:
265 return "SIP servers address";
266 case DH6OPT_DNS:
267 return "DNS";
268 case DH6OPT_DNSNAME:
269 return "DNS name";
270 case DH6OPT_IA_PD:
271 return "IA_PD";
272 case DH6OPT_IA_PD_PREFIX:
273 return "IA_PD prefix";
274 case DH6OPT_NTP_SERVERS:
275 return "NTP Server";
276 case DH6OPT_LIFETIME:
277 return "lifetime";
278 case DH6OPT_NIS_SERVERS:
279 return "NIS server";
280 case DH6OPT_NISP_SERVERS:
281 return "NIS+ server";
282 case DH6OPT_NIS_NAME:
283 return "NIS domain name";
284 case DH6OPT_NISP_NAME:
285 return "NIS+ domain name";
286 case DH6OPT_BCMCS_SERVER_D:
287 return "BCMCS domain name";
288 case DH6OPT_BCMCS_SERVER_A:
289 return "BCMCS server";
290 case DH6OPT_GEOCONF_CIVIC:
291 return "Geoconf Civic";
292 case DH6OPT_REMOTE_ID:
293 return "Remote ID";
294 case DH6OPT_SUBSCRIBER_ID:
295 return "Subscriber ID";
296 case DH6OPT_CLIENT_FQDN:
297 return "Client FQDN";
298 case DH6OPT_PANA_AGENT:
299 return "PANA agent";
300 case DH6OPT_NEW_POSIX_TIMEZONE:
301 return "POSIX timezone";
302 case DH6OPT_NEW_TZDB_TIMEZONE:
303 return "POSIX tz database";
304 case DH6OPT_ERO:
305 return "Echo request option";
306 case DH6OPT_LQ_QUERY:
307 return "Lease query";
308 case DH6OPT_CLIENT_DATA:
309 return "LQ client data";
310 case DH6OPT_CLT_TIME:
311 return "Clt time";
312 case DH6OPT_LQ_RELAY_DATA:
313 return "LQ relay data";
314 case DH6OPT_LQ_CLIENT_LINK:
315 return "LQ client link";
316 default:
317 snprintf(genstr, sizeof(genstr), "opt_%d", type);
318 return(genstr);
319 }
320 }
321
322 static const char *
323 dhcp6stcode(int code)
324 {
325 static char genstr[sizeof("code255") + 1]; /* XXX thread unsafe */
326
327 if (code > 255)
328 return "INVALID code";
329
330 switch(code) {
331 case DH6OPT_STCODE_SUCCESS:
332 return "success";
333 case DH6OPT_STCODE_UNSPECFAIL:
334 return "unspec failure";
335 case DH6OPT_STCODE_NOADDRAVAIL:
336 return "no addresses";
337 case DH6OPT_STCODE_NOBINDING:
338 return "no binding";
339 case DH6OPT_STCODE_NOTONLINK:
340 return "not on-link";
341 case DH6OPT_STCODE_USEMULTICAST:
342 return "use multicast";
343 case DH6OPT_STCODE_NOPREFIXAVAIL:
344 return "no prefixes";
345 case DH6OPT_STCODE_UNKNOWNQUERYTYPE:
346 return "unknown query type";
347 case DH6OPT_STCODE_MALFORMEDQUERY:
348 return "malformed query";
349 case DH6OPT_STCODE_NOTCONFIGURED:
350 return "not configured";
351 case DH6OPT_STCODE_NOTALLOWED:
352 return "not allowed";
353 default:
354 snprintf(genstr, sizeof(genstr), "code%d", code);
355 return(genstr);
356 }
357 }
358
359 static void
360 dhcp6opt_print(const u_char *cp, const u_char *ep)
361 {
362 struct dhcp6opt *dh6o;
363 u_char *tp;
364 size_t i;
365 u_int16_t opttype;
366 size_t optlen;
367 u_int16_t val16;
368 u_int32_t val32;
369 struct dhcp6_ia ia;
370 struct dhcp6_ia_prefix ia_prefix;
371 struct dhcp6_ia_addr ia_addr;
372 struct dhcp6_auth authopt;
373 u_int authinfolen, authrealmlen;
374
375 if (cp == ep)
376 return;
377 while (cp < ep) {
378 if (ep < cp + sizeof(*dh6o))
379 goto trunc;
380 dh6o = (struct dhcp6opt *)cp;
381 optlen = EXTRACT_16BITS(&dh6o->dh6opt_len);
382 if (ep < cp + sizeof(*dh6o) + optlen)
383 goto trunc;
384 opttype = EXTRACT_16BITS(&dh6o->dh6opt_type);
385 printf(" (%s", dhcp6opt_name(opttype));
386 switch (opttype) {
387 case DH6OPT_CLIENTID:
388 case DH6OPT_SERVERID:
389 if (optlen < 2) {
390 /*(*/
391 printf(" ?)");
392 break;
393 }
394 tp = (u_char *)(dh6o + 1);
395 switch (EXTRACT_16BITS(tp)) {
396 case 1:
397 if (optlen >= 2 + 6) {
398 printf(" hwaddr/time type %u time %u ",
399 EXTRACT_16BITS(&tp[2]),
400 EXTRACT_32BITS(&tp[4]));
401 for (i = 8; i < optlen; i++)
402 printf("%02x", tp[i]);
403 /*(*/
404 printf(")");
405 } else {
406 /*(*/
407 printf(" ?)");
408 }
409 break;
410 case 2:
411 if (optlen >= 2 + 8) {
412 printf(" vid ");
413 for (i = 2; i < 2 + 8; i++)
414 printf("%02x", tp[i]);
415 /*(*/
416 printf(")");
417 } else {
418 /*(*/
419 printf(" ?)");
420 }
421 break;
422 case 3:
423 if (optlen >= 2 + 2) {
424 printf(" hwaddr type %u ",
425 EXTRACT_16BITS(&tp[2]));
426 for (i = 4; i < optlen; i++)
427 printf("%02x", tp[i]);
428 /*(*/
429 printf(")");
430 } else {
431 /*(*/
432 printf(" ?)");
433 }
434 break;
435 default:
436 printf(" type %d)", EXTRACT_16BITS(tp));
437 break;
438 }
439 break;
440 case DH6OPT_IA_ADDR:
441 if (optlen < sizeof(ia_addr) - 4) {
442 printf(" ?)");
443 break;
444 }
445 memcpy(&ia_addr, (u_char *)dh6o, sizeof(ia_addr));
446 printf(" %s",
447 ip6addr_string(&ia_addr.dh6opt_ia_addr_addr));
448 ia_addr.dh6opt_ia_addr_pltime =
449 ntohl(ia_addr.dh6opt_ia_addr_pltime);
450 ia_addr.dh6opt_ia_addr_vltime =
451 ntohl(ia_addr.dh6opt_ia_addr_vltime);
452 printf(" pltime:%lu vltime:%lu",
453 (unsigned long)ia_addr.dh6opt_ia_addr_pltime,
454 (unsigned long)ia_addr.dh6opt_ia_addr_vltime);
455 if (optlen > sizeof(ia_addr) - 4) {
456 /* there are sub-options */
457 dhcp6opt_print((u_char *)dh6o +
458 sizeof(ia_addr),
459 (u_char *)(dh6o + 1) + optlen);
460 }
461 printf(")");
462 break;
463 case DH6OPT_ORO:
464 case DH6OPT_ERO:
465 if (optlen % 2) {
466 printf(" ?)");
467 break;
468 }
469 tp = (u_char *)(dh6o + 1);
470 for (i = 0; i < optlen; i += 2) {
471 u_int16_t opt;
472
473 memcpy(&opt, &tp[i], sizeof(opt));
474 printf(" %s", dhcp6opt_name(ntohs(opt)));
475 }
476 printf(")");
477 break;
478 case DH6OPT_PREFERENCE:
479 if (optlen != 1) {
480 printf(" ?)");
481 break;
482 }
483 printf(" %d)", *((u_char *)(dh6o + 1) + 1));
484 break;
485 case DH6OPT_ELAPSED_TIME:
486 if (optlen != 2) {
487 printf(" ?)");
488 break;
489 }
490 memcpy(&val16, dh6o + 1, sizeof(val16));
491 val16 = ntohs(val16);
492 printf(" %d)", (int)val16);
493 break;
494 case DH6OPT_RELAY_MSG:
495 printf(" (");
496 dhcp6_print((const u_char *)(dh6o + 1), optlen);
497 printf(")");
498 break;
499 case DH6OPT_AUTH:
500 if (optlen < sizeof(authopt) - sizeof(*dh6o)) {
501 printf(" ?)");
502 break;
503 }
504 memcpy(&authopt, dh6o, sizeof(authopt));
505 switch (authopt.dh6opt_auth_proto) {
506 case DH6OPT_AUTHPROTO_DELAYED:
507 printf(" proto: delayed");
508 break;
509 case DH6OPT_AUTHPROTO_RECONFIG:
510 printf(" proto: reconfigure");
511 break;
512 default:
513 printf(" proto: %d",
514 authopt.dh6opt_auth_proto);
515 break;
516 }
517 switch (authopt.dh6opt_auth_alg) {
518 case DH6OPT_AUTHALG_HMACMD5:
519 /* XXX: may depend on the protocol */
520 printf(", alg: HMAC-MD5");
521 break;
522 default:
523 printf(", alg: %d", authopt.dh6opt_auth_alg);
524 break;
525 }
526 switch (authopt.dh6opt_auth_rdm) {
527 case DH6OPT_AUTHRDM_MONOCOUNTER:
528 printf(", RDM: mono");
529 break;
530 default:
531 printf(", RDM: %d", authopt.dh6opt_auth_rdm);
532 break;
533 }
534 tp = (u_char *)&authopt.dh6opt_auth_rdinfo;
535 printf(", RD:");
536 for (i = 0; i < 4; i++, tp += sizeof(val16))
537 printf(" %04x", EXTRACT_16BITS(tp));
538
539 /* protocol dependent part */
540 tp = (u_char *)dh6o + sizeof(authopt);
541 authinfolen =
542 optlen + sizeof(*dh6o) - sizeof(authopt);
543 switch (authopt.dh6opt_auth_proto) {
544 case DH6OPT_AUTHPROTO_DELAYED:
545 if (authinfolen == 0)
546 break;
547 if (authinfolen < 20) {
548 printf(" ??");
549 break;
550 }
551 authrealmlen = authinfolen - 20;
552 if (authrealmlen > 0) {
553 printf(", realm: ");
554 }
555 for (i = 0; i < authrealmlen; i++, tp++)
556 printf("%02x", *tp);
557 printf(", key ID: %08x", EXTRACT_32BITS(tp));
558 tp += 4;
559 printf(", HMAC-MD5:");
560 for (i = 0; i < 4; i++, tp+= 4)
561 printf(" %08x", EXTRACT_32BITS(tp));
562 break;
563 case DH6OPT_AUTHPROTO_RECONFIG:
564 if (authinfolen != 17) {
565 printf(" ??");
566 break;
567 }
568 switch (*tp++) {
569 case DH6OPT_AUTHRECONFIG_KEY:
570 printf(" reconfig-key");
571 break;
572 case DH6OPT_AUTHRECONFIG_HMACMD5:
573 printf(" type: HMAC-MD5");
574 break;
575 default:
576 printf(" type: ??");
577 break;
578 }
579 printf(" value:");
580 for (i = 0; i < 4; i++, tp+= 4)
581 printf(" %08x", EXTRACT_32BITS(tp));
582 break;
583 default:
584 printf(" ??");
585 break;
586 }
587
588 printf(")");
589 break;
590 case DH6OPT_RAPID_COMMIT: /* nothing todo */
591 printf(")");
592 break;
593 case DH6OPT_INTERFACE_ID:
594 case DH6OPT_SUBSCRIBER_ID:
595 /*
596 * Since we cannot predict the encoding, print hex dump
597 * at most 10 characters.
598 */
599 printf(" ");
600 for (i = 0; i < optlen && i < 10; i++)
601 printf("%02x", ((u_char *)(dh6o + 1))[i]);
602 printf("...)");
603 break;
604 case DH6OPT_RECONF_MSG:
605 tp = (u_char *)(dh6o + 1);
606 switch (*tp) {
607 case DH6_RENEW:
608 printf(" for renew)");
609 break;
610 case DH6_INFORM_REQ:
611 printf(" for inf-req)");
612 break;
613 default:
614 printf(" for ?\?\?(%02x))", *tp);
615 break;
616 }
617 break;
618 case DH6OPT_RECONF_ACCEPT: /* nothing todo */
619 printf(")");
620 break;
621 case DH6OPT_SIP_SERVER_A:
622 case DH6OPT_DNS:
623 case DH6OPT_NTP_SERVERS:
624 case DH6OPT_NIS_SERVERS:
625 case DH6OPT_NISP_SERVERS:
626 case DH6OPT_BCMCS_SERVER_A:
627 case DH6OPT_PANA_AGENT:
628 case DH6OPT_LQ_CLIENT_LINK:
629 if (optlen % 16) {
630 printf(" ?)");
631 break;
632 }
633 tp = (u_char *)(dh6o + 1);
634 for (i = 0; i < optlen; i += 16)
635 printf(" %s", ip6addr_string(&tp[i]));
636 printf(")");
637 break;
638 case DH6OPT_STATUS_CODE:
639 if (optlen < 2) {
640 printf(" ?)");
641 break;
642 }
643 memcpy(&val16, (u_char *)(dh6o + 1), sizeof(val16));
644 val16 = ntohs(val16);
645 printf(" %s)", dhcp6stcode(val16));
646 break;
647 case DH6OPT_IA_NA:
648 case DH6OPT_IA_PD:
649 if (optlen < sizeof(ia) - 4) {
650 printf(" ?)");
651 break;
652 }
653 memcpy(&ia, (u_char *)dh6o, sizeof(ia));
654 ia.dh6opt_ia_iaid = ntohl(ia.dh6opt_ia_iaid);
655 ia.dh6opt_ia_t1 = ntohl(ia.dh6opt_ia_t1);
656 ia.dh6opt_ia_t2 = ntohl(ia.dh6opt_ia_t2);
657 printf(" IAID:%lu T1:%lu T2:%lu",
658 (unsigned long)ia.dh6opt_ia_iaid,
659 (unsigned long)ia.dh6opt_ia_t1,
660 (unsigned long)ia.dh6opt_ia_t2);
661 if (optlen > sizeof(ia) - 4) {
662 /* there are sub-options */
663 dhcp6opt_print((u_char *)dh6o + sizeof(ia),
664 (u_char *)(dh6o + 1) + optlen);
665 }
666 printf(")");
667 break;
668 case DH6OPT_IA_TA:
669 if (optlen < 4) {
670 printf(" ?)");
671 break;
672 }
673 memcpy(&val32, dh6o + 1, sizeof(val32));
674 val32 = ntohl(val32);
675 printf(" IAID:%lu", (unsigned long)val32);
676 if (optlen > 4) {
677 /* there are sub-options */
678 dhcp6opt_print((u_char *)(dh6o + 1) + 4,
679 (u_char *)(dh6o + 1) + optlen);
680 }
681 printf(")");
682 break;
683 case DH6OPT_IA_PD_PREFIX:
684 if (optlen < sizeof(ia_prefix) - 4) {
685 printf(" ?)");
686 break;
687 }
688 memcpy(&ia_prefix, (u_char *)dh6o, sizeof(ia_prefix));
689 printf(" %s/%d",
690 ip6addr_string(&ia_prefix.dh6opt_ia_prefix_addr),
691 ia_prefix.dh6opt_ia_prefix_plen);
692 ia_prefix.dh6opt_ia_prefix_pltime =
693 ntohl(ia_prefix.dh6opt_ia_prefix_pltime);
694 ia_prefix.dh6opt_ia_prefix_vltime =
695 ntohl(ia_prefix.dh6opt_ia_prefix_vltime);
696 printf(" pltime:%lu vltime:%lu",
697 (unsigned long)ia_prefix.dh6opt_ia_prefix_pltime,
698 (unsigned long)ia_prefix.dh6opt_ia_prefix_vltime);
699 if (optlen > sizeof(ia_prefix) - 4) {
700 /* there are sub-options */
701 dhcp6opt_print((u_char *)dh6o +
702 sizeof(ia_prefix),
703 (u_char *)(dh6o + 1) + optlen);
704 }
705 printf(")");
706 break;
707 case DH6OPT_LIFETIME:
708 case DH6OPT_CLT_TIME:
709 if (optlen != 4) {
710 printf(" ?)");
711 break;
712 }
713 memcpy(&val32, dh6o + 1, sizeof(val32));
714 val32 = ntohl(val32);
715 printf(" %d)", (int)val32);
716 break;
717 case DH6OPT_REMOTE_ID:
718 if (optlen < 4) {
719 printf(" ?)");
720 break;
721 }
722 tp = (u_char *)(dh6o + 1);
723 memcpy(&val32, &tp[0], sizeof(val32));
724 val32 = ntohl(val32);
725 printf(" %d ", (int)val32);
726 /*
727 * Print hex dump first 10 characters.
728 */
729 for (i = 4; i < optlen && i < 14; i++)
730 printf("%02x", tp[i]);
731 printf("...)");
732 break;
733 case DH6OPT_LQ_QUERY:
734 if (optlen < 17) {
735 printf(" ?)");
736 break;
737 }
738 tp = (u_char *)(dh6o + 1);
739 switch (*tp) {
740 case 1:
741 printf(" by-address");
742 break;
743 case 2:
744 printf(" by-clientID");
745 break;
746 default:
747 printf(" type_%d", (int)*tp);
748 break;
749 }
750 printf(" %s", ip6addr_string(&tp[1]));
751 if (optlen > 17) {
752 /* there are query-options */
753 dhcp6opt_print(tp + 17, tp + optlen);
754 }
755 printf(")");
756 break;
757 case DH6OPT_CLIENT_DATA:
758 if (optlen > 0) {
759 /* there are encapsulated options */
760 dhcp6opt_print((u_char *)(dh6o + 1),
761 (u_char *)(dh6o + 1) + optlen);
762 }
763 printf(")");
764 break;
765 case DH6OPT_LQ_RELAY_DATA:
766 if (optlen < 16) {
767 printf(" ?)");
768 break;
769 }
770 tp = (u_char *)(dh6o + 1);
771 printf(" %s ", ip6addr_string(&tp[0]));
772 /*
773 * Print hex dump first 10 characters.
774 */
775 for (i = 16; i < optlen && i < 26; i++)
776 printf("%02x", tp[i]);
777 printf("...)");
778 break;
779 default:
780 printf(")");
781 break;
782 }
783
784 cp += sizeof(*dh6o) + optlen;
785 }
786 return;
787
788 trunc:
789 printf("[|dhcp6ext]");
790 }
791
792 /*
793 * Print dhcp6 packets
794 */
795 void
796 dhcp6_print(const u_char *cp, u_int length)
797 {
798 struct dhcp6 *dh6;
799 struct dhcp6_relay *dh6relay;
800 const u_char *ep;
801 u_char *extp;
802 const char *name;
803
804 printf("dhcp6");
805
806 ep = (u_char *)snapend;
807 if (cp + length < ep)
808 ep = cp + length;
809
810 dh6 = (struct dhcp6 *)cp;
811 dh6relay = (struct dhcp6_relay *)cp;
812 TCHECK(dh6->dh6_xid);
813 switch (dh6->dh6_msgtype) {
814 case DH6_SOLICIT:
815 name = "solicit";
816 break;
817 case DH6_ADVERTISE:
818 name = "advertise";
819 break;
820 case DH6_REQUEST:
821 name = "request";
822 break;
823 case DH6_CONFIRM:
824 name = "confirm";
825 break;
826 case DH6_RENEW:
827 name = "renew";
828 break;
829 case DH6_REBIND:
830 name = "rebind";
831 break;
832 case DH6_REPLY:
833 name = "reply";
834 break;
835 case DH6_RELEASE:
836 name = "release";
837 break;
838 case DH6_DECLINE:
839 name = "decline";
840 break;
841 case DH6_RECONFIGURE:
842 name = "reconfigure";
843 break;
844 case DH6_INFORM_REQ:
845 name= "inf-req";
846 break;
847 case DH6_RELAY_FORW:
848 name= "relay-fwd";
849 break;
850 case DH6_RELAY_REPLY:
851 name= "relay-reply";
852 break;
853 case DH6_LEASEQUERY:
854 name= "leasequery";
855 break;
856 case DH6_LQ_REPLY:
857 name= "leasequery-reply";
858 break;
859 default:
860 name = NULL;
861 break;
862 }
863
864 if (!vflag) {
865 if (name)
866 printf(" %s", name);
867 else if (dh6->dh6_msgtype != DH6_RELAY_FORW &&
868 dh6->dh6_msgtype != DH6_RELAY_REPLY) {
869 printf(" msgtype-%u", dh6->dh6_msgtype);
870 }
871 return;
872 }
873
874 /* XXX relay agent messages have to be handled differently */
875
876 if (name)
877 printf(" %s (", name); /*)*/
878 else
879 printf(" msgtype-%u (", dh6->dh6_msgtype); /*)*/
880 if (dh6->dh6_msgtype != DH6_RELAY_FORW &&
881 dh6->dh6_msgtype != DH6_RELAY_REPLY) {
882 printf("xid=%x", EXTRACT_32BITS(&dh6->dh6_xid) & DH6_XIDMASK);
883 extp = (u_char *)(dh6 + 1);
884 dhcp6opt_print(extp, ep);
885 } else { /* relay messages */
886 struct in6_addr addr6;
887
888 TCHECK(dh6relay->dh6relay_peeraddr);
889
890 memcpy(&addr6, dh6relay->dh6relay_linkaddr, sizeof (addr6));
891 printf("linkaddr=%s", ip6addr_string(&addr6));
892
893 memcpy(&addr6, dh6relay->dh6relay_peeraddr, sizeof (addr6));
894 printf(" peeraddr=%s", ip6addr_string(&addr6));
895
896 dhcp6opt_print((u_char *)(dh6relay + 1), ep);
897 }
898 /*(*/
899 printf(")");
900 return;
901
902 trunc:
903 printf("[|dhcp6]");
904 }
DragonFly BSD