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IS-IS over PPP support, from Hannes Gredler <[email protected]>.
[tcpdump] / print-udp.c
1 /*
2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
16 * written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 */
21
22 #ifndef lint
23 static const char rcsid[] =
24 "@(#) $Header: /tcpdump/master/tcpdump/print-udp.c,v 1.97 2001-08-20 17:53:54 fenner Exp $ (LBL)";
25 #endif
26
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #include <sys/param.h>
32 #include <sys/time.h>
33
34 #include <netinet/in.h>
35
36 #ifdef SEGSIZE
37 #undef SEGSIZE
38 #endif
39 #include <arpa/tftp.h>
40
41 #include <rpc/rpc.h>
42
43 #include <stdio.h>
44 #include <string.h>
45
46 #include "interface.h"
47 #include "addrtoname.h"
48 #include "appletalk.h"
49
50 #include "udp.h"
51
52 #include "ip.h"
53 #ifdef INET6
54 #include "ip6.h"
55 #endif
56
57 #include "nameser.h"
58 #include "nfs.h"
59 #include "bootp.h"
60
61 struct rtcphdr {
62 u_int16_t rh_flags; /* T:2 P:1 CNT:5 PT:8 */
63 u_int16_t rh_len; /* length of message (in words) */
64 u_int32_t rh_ssrc; /* synchronization src id */
65 };
66
67 typedef struct {
68 u_int32_t upper; /* more significant 32 bits */
69 u_int32_t lower; /* less significant 32 bits */
70 } ntp64;
71
72 /*
73 * Sender report.
74 */
75 struct rtcp_sr {
76 ntp64 sr_ntp; /* 64-bit ntp timestamp */
77 u_int32_t sr_ts; /* reference media timestamp */
78 u_int32_t sr_np; /* no. packets sent */
79 u_int32_t sr_nb; /* no. bytes sent */
80 };
81
82 /*
83 * Receiver report.
84 * Time stamps are middle 32-bits of ntp timestamp.
85 */
86 struct rtcp_rr {
87 u_int32_t rr_srcid; /* sender being reported */
88 u_int32_t rr_nl; /* no. packets lost */
89 u_int32_t rr_ls; /* extended last seq number received */
90 u_int32_t rr_dv; /* jitter (delay variance) */
91 u_int32_t rr_lsr; /* orig. ts from last rr from this src */
92 u_int32_t rr_dlsr; /* time from recpt of last rr to xmit time */
93 };
94
95 /*XXX*/
96 #define RTCP_PT_SR 200
97 #define RTCP_PT_RR 201
98 #define RTCP_PT_SDES 202
99 #define RTCP_SDES_CNAME 1
100 #define RTCP_SDES_NAME 2
101 #define RTCP_SDES_EMAIL 3
102 #define RTCP_SDES_PHONE 4
103 #define RTCP_SDES_LOC 5
104 #define RTCP_SDES_TOOL 6
105 #define RTCP_SDES_NOTE 7
106 #define RTCP_SDES_PRIV 8
107 #define RTCP_PT_BYE 203
108 #define RTCP_PT_APP 204
109
110 static void
111 vat_print(const void *hdr, u_int len, register const struct udphdr *up)
112 {
113 /* vat/vt audio */
114 u_int ts = *(u_int16_t *)hdr;
115 if ((ts & 0xf060) != 0) {
116 /* probably vt */
117 (void)printf(" udp/vt %u %d / %d",
118 (u_int32_t)(ntohs(up->uh_ulen) - sizeof(*up)),
119 ts & 0x3ff, ts >> 10);
120 } else {
121 /* probably vat */
122 u_int32_t i0 = (u_int32_t)ntohl(((u_int *)hdr)[0]);
123 u_int32_t i1 = (u_int32_t)ntohl(((u_int *)hdr)[1]);
124 printf(" udp/vat %u c%d %u%s",
125 (u_int32_t)(ntohs(up->uh_ulen) - sizeof(*up) - 8),
126 i0 & 0xffff,
127 i1, i0 & 0x800000? "*" : "");
128 /* audio format */
129 if (i0 & 0x1f0000)
130 printf(" f%d", (i0 >> 16) & 0x1f);
131 if (i0 & 0x3f000000)
132 printf(" s%d", (i0 >> 24) & 0x3f);
133 }
134 }
135
136 static void
137 rtp_print(const void *hdr, u_int len, register const struct udphdr *up)
138 {
139 /* rtp v1 or v2 */
140 u_int *ip = (u_int *)hdr;
141 u_int hasopt, hasext, contype, hasmarker;
142 u_int32_t i0 = (u_int32_t)ntohl(((u_int *)hdr)[0]);
143 u_int32_t i1 = (u_int32_t)ntohl(((u_int *)hdr)[1]);
144 u_int dlen = ntohs(up->uh_ulen) - sizeof(*up) - 8;
145 const char * ptype;
146
147 ip += 2;
148 len >>= 2;
149 len -= 2;
150 hasopt = 0;
151 hasext = 0;
152 if ((i0 >> 30) == 1) {
153 /* rtp v1 */
154 hasopt = i0 & 0x800000;
155 contype = (i0 >> 16) & 0x3f;
156 hasmarker = i0 & 0x400000;
157 ptype = "rtpv1";
158 } else {
159 /* rtp v2 */
160 hasext = i0 & 0x10000000;
161 contype = (i0 >> 16) & 0x7f;
162 hasmarker = i0 & 0x800000;
163 dlen -= 4;
164 ptype = "rtp";
165 ip += 1;
166 len -= 1;
167 }
168 printf(" udp/%s %d c%d %s%s %d %u",
169 ptype,
170 dlen,
171 contype,
172 (hasopt || hasext)? "+" : "",
173 hasmarker? "*" : "",
174 i0 & 0xffff,
175 i1);
176 if (vflag) {
177 printf(" %u", (u_int32_t)ntohl(((u_int *)hdr)[2]));
178 if (hasopt) {
179 u_int i2, optlen;
180 do {
181 i2 = ip[0];
182 optlen = (i2 >> 16) & 0xff;
183 if (optlen == 0 || optlen > len) {
184 printf(" !opt");
185 return;
186 }
187 ip += optlen;
188 len -= optlen;
189 } while ((int)i2 >= 0);
190 }
191 if (hasext) {
192 u_int i2, extlen;
193 i2 = ip[0];
194 extlen = (i2 & 0xffff) + 1;
195 if (extlen > len) {
196 printf(" !ext");
197 return;
198 }
199 ip += extlen;
200 }
201 if (contype == 0x1f) /*XXX H.261 */
202 printf(" 0x%04x", ip[0] >> 16);
203 }
204 }
205
206 static const u_char *
207 rtcp_print(const u_char *hdr, const u_char *ep)
208 {
209 /* rtp v2 control (rtcp) */
210 struct rtcp_rr *rr = 0;
211 struct rtcp_sr *sr;
212 struct rtcphdr *rh = (struct rtcphdr *)hdr;
213 u_int len;
214 u_int16_t flags;
215 int cnt;
216 double ts, dts;
217 if ((u_char *)(rh + 1) > ep) {
218 printf(" [|rtcp]");
219 return (ep);
220 }
221 len = (ntohs(rh->rh_len) + 1) * 4;
222 flags = ntohs(rh->rh_flags);
223 cnt = (flags >> 8) & 0x1f;
224 switch (flags & 0xff) {
225 case RTCP_PT_SR:
226 sr = (struct rtcp_sr *)(rh + 1);
227 printf(" sr");
228 if (len != cnt * sizeof(*rr) + sizeof(*sr) + sizeof(*rh))
229 printf(" [%d]", len);
230 if (vflag)
231 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
232 if ((u_char *)(sr + 1) > ep) {
233 printf(" [|rtcp]");
234 return (ep);
235 }
236 ts = (double)((u_int32_t)ntohl(sr->sr_ntp.upper)) +
237 ((double)((u_int32_t)ntohl(sr->sr_ntp.lower)) /
238 4294967296.0);
239 printf(" @%.2f %u %up %ub", ts, (u_int32_t)ntohl(sr->sr_ts),
240 (u_int32_t)ntohl(sr->sr_np), (u_int32_t)ntohl(sr->sr_nb));
241 rr = (struct rtcp_rr *)(sr + 1);
242 break;
243 case RTCP_PT_RR:
244 printf(" rr");
245 if (len != cnt * sizeof(*rr) + sizeof(*rh))
246 printf(" [%d]", len);
247 rr = (struct rtcp_rr *)(rh + 1);
248 if (vflag)
249 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
250 break;
251 case RTCP_PT_SDES:
252 printf(" sdes %d", len);
253 if (vflag)
254 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
255 cnt = 0;
256 break;
257 case RTCP_PT_BYE:
258 printf(" bye %d", len);
259 if (vflag)
260 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
261 cnt = 0;
262 break;
263 default:
264 printf(" type-0x%x %d", flags & 0xff, len);
265 cnt = 0;
266 break;
267 }
268 if (cnt > 1)
269 printf(" c%d", cnt);
270 while (--cnt >= 0) {
271 if ((u_char *)(rr + 1) > ep) {
272 printf(" [|rtcp]");
273 return (ep);
274 }
275 if (vflag)
276 printf(" %u", (u_int32_t)ntohl(rr->rr_srcid));
277 ts = (double)((u_int32_t)ntohl(rr->rr_lsr)) / 65536.;
278 dts = (double)((u_int32_t)ntohl(rr->rr_dlsr)) / 65536.;
279 printf(" %ul %us %uj @%.2f+%.2f",
280 (u_int32_t)ntohl(rr->rr_nl) & 0x00ffffff,
281 (u_int32_t)ntohl(rr->rr_ls),
282 (u_int32_t)ntohl(rr->rr_dv), ts, dts);
283 }
284 return (hdr + len);
285 }
286
287 static int udp_cksum(register const struct ip *ip,
288 register const struct udphdr *up,
289 register int len)
290 {
291 union phu {
292 struct phdr {
293 u_int32_t src;
294 u_int32_t dst;
295 u_char mbz;
296 u_char proto;
297 u_int16_t len;
298 } ph;
299 u_int16_t pa[6];
300 } phu;
301 register const u_int16_t *sp;
302
303 /* pseudo-header.. */
304 phu.ph.len = htons(len);
305 phu.ph.mbz = 0;
306 phu.ph.proto = IPPROTO_UDP;
307 memcpy(&phu.ph.src, &ip->ip_src.s_addr, sizeof(u_int32_t));
308 memcpy(&phu.ph.dst, &ip->ip_dst.s_addr, sizeof(u_int32_t));
309
310 sp = &phu.pa[0];
311 return in_cksum((u_short *)up, len,
312 sp[0]+sp[1]+sp[2]+sp[3]+sp[4]+sp[5]);
313 }
314
315 #ifdef INET6
316 static int udp6_cksum(const struct ip6_hdr *ip6, const struct udphdr *up,
317 int len)
318 {
319 int i, tlen;
320 register const u_int16_t *sp;
321 u_int32_t sum;
322 union {
323 struct {
324 struct in6_addr ph_src;
325 struct in6_addr ph_dst;
326 u_int32_t ph_len;
327 u_int8_t ph_zero[3];
328 u_int8_t ph_nxt;
329 } ph;
330 u_int16_t pa[20];
331 } phu;
332
333 tlen = ntohs(ip6->ip6_plen) + sizeof(struct ip6_hdr) -
334 ((const char *)up - (const char*)ip6);
335
336 /* pseudo-header */
337 memset(&phu, 0, sizeof(phu));
338 phu.ph.ph_src = ip6->ip6_src;
339 phu.ph.ph_dst = ip6->ip6_dst;
340 phu.ph.ph_len = htonl(tlen);
341 phu.ph.ph_nxt = IPPROTO_UDP;
342
343 sum = 0;
344 for (i = 0; i < sizeof(phu.pa) / sizeof(phu.pa[0]); i++)
345 sum += phu.pa[i];
346
347 sp = (const u_int16_t *)up;
348
349 for (i = 0; i < (tlen & ~1); i += 2)
350 sum += *sp++;
351
352 if (tlen & 1)
353 sum += htons((*(const u_int8_t *)sp) << 8);
354
355 while (sum > 0xffff)
356 sum = (sum & 0xffff) + (sum >> 16);
357 sum = ~sum & 0xffff;
358
359 return (sum);
360 }
361 #endif
362
363
364 /* XXX probably should use getservbyname() and cache answers */
365 #define TFTP_PORT 69 /*XXX*/
366 #define KERBEROS_PORT 88 /*XXX*/
367 #define SUNRPC_PORT 111 /*XXX*/
368 #define SNMP_PORT 161 /*XXX*/
369 #define NTP_PORT 123 /*XXX*/
370 #define SNMPTRAP_PORT 162 /*XXX*/
371 #define ISAKMP_PORT 500 /*XXX*/
372 #define TIMED_PORT 525 /*XXX*/
373 #define RIP_PORT 520 /*XXX*/
374 #define KERBEROS_SEC_PORT 750 /*XXX*/
375 #define L2TP_PORT 1701 /*XXX*/
376 #define ISAKMP_PORT_USER1 7500 /*XXX - nonstandard*/
377 #define ISAKMP_PORT_USER2 8500 /*XXX - nonstandard*/
378 #define RX_PORT_LOW 7000 /*XXX*/
379 #define RX_PORT_HIGH 7009 /*XXX*/
380 #define NETBIOS_NS_PORT 137
381 #define NETBIOS_DGRAM_PORT 138
382 #define CISCO_AUTORP_PORT 496 /*XXX*/
383 #define RADIUS_PORT 1645
384 #define RADIUS_NEW_PORT 1812
385 #define RADIUS_ACCOUNTING_PORT 1646
386 #define RADIUS_NEW_ACCOUNTING_PORT 1813
387 #define LWRES_PORT 921
388
389 #ifdef INET6
390 #define RIPNG_PORT 521 /*XXX*/
391 #define DHCP6_SERV_PORT 546 /*XXX*/
392 #define DHCP6_CLI_PORT 547 /*XXX*/
393 #endif
394
395 void
396 udp_print(register const u_char *bp, u_int length,
397 register const u_char *bp2, int fragmented)
398 {
399 register const struct udphdr *up;
400 register const struct ip *ip;
401 register const u_char *cp;
402 register const u_char *ep = bp + length;
403 u_int16_t sport, dport, ulen;
404 #ifdef INET6
405 register const struct ip6_hdr *ip6;
406 #endif
407
408 if (ep > snapend)
409 ep = snapend;
410 up = (struct udphdr *)bp;
411 ip = (struct ip *)bp2;
412 #ifdef INET6
413 if (IP_V(ip) == 6)
414 ip6 = (struct ip6_hdr *)bp2;
415 else
416 ip6 = NULL;
417 #endif /*INET6*/
418 cp = (u_char *)(up + 1);
419 if (cp > snapend) {
420 (void)printf("%s > %s: [|udp]",
421 ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst));
422 return;
423 }
424 if (length < sizeof(struct udphdr)) {
425 (void)printf("%s > %s: truncated-udp %d",
426 ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst),
427 length);
428 return;
429 }
430 length -= sizeof(struct udphdr);
431
432 sport = ntohs(up->uh_sport);
433 dport = ntohs(up->uh_dport);
434 ulen = ntohs(up->uh_ulen);
435 if (ulen < 8) {
436 (void)printf("%s > %s: truncated-udplength %d",
437 ipaddr_string(&ip->ip_src),
438 ipaddr_string(&ip->ip_dst),
439 ulen);
440 return;
441 }
442 if (packettype) {
443 register struct rpc_msg *rp;
444 enum msg_type direction;
445
446 switch (packettype) {
447
448 case PT_VAT:
449 (void)printf("%s.%s > %s.%s:",
450 ipaddr_string(&ip->ip_src),
451 udpport_string(sport),
452 ipaddr_string(&ip->ip_dst),
453 udpport_string(dport));
454 vat_print((void *)(up + 1), length, up);
455 break;
456
457 case PT_WB:
458 (void)printf("%s.%s > %s.%s:",
459 ipaddr_string(&ip->ip_src),
460 udpport_string(sport),
461 ipaddr_string(&ip->ip_dst),
462 udpport_string(dport));
463 wb_print((void *)(up + 1), length);
464 break;
465
466 case PT_RPC:
467 rp = (struct rpc_msg *)(up + 1);
468 direction = (enum msg_type)ntohl(rp->rm_direction);
469 if (direction == CALL)
470 sunrpcrequest_print((u_char *)rp, length,
471 (u_char *)ip);
472 else
473 nfsreply_print((u_char *)rp, length,
474 (u_char *)ip); /*XXX*/
475 break;
476
477 case PT_RTP:
478 (void)printf("%s.%s > %s.%s:",
479 ipaddr_string(&ip->ip_src),
480 udpport_string(sport),
481 ipaddr_string(&ip->ip_dst),
482 udpport_string(dport));
483 rtp_print((void *)(up + 1), length, up);
484 break;
485
486 case PT_RTCP:
487 (void)printf("%s.%s > %s.%s:",
488 ipaddr_string(&ip->ip_src),
489 udpport_string(sport),
490 ipaddr_string(&ip->ip_dst),
491 udpport_string(dport));
492 while (cp < ep)
493 cp = rtcp_print(cp, ep);
494 break;
495
496 case PT_SNMP:
497 (void)printf("%s.%s > %s.%s:",
498 ipaddr_string(&ip->ip_src),
499 udpport_string(sport),
500 ipaddr_string(&ip->ip_dst),
501 udpport_string(dport));
502 snmp_print((const u_char *)(up + 1), length);
503 break;
504
505 case PT_CNFP:
506 (void)printf("%s.%s > %s.%s:",
507 ipaddr_string(&ip->ip_src),
508 udpport_string(sport),
509 ipaddr_string(&ip->ip_dst),
510 udpport_string(dport));
511 cnfp_print(cp, length, (const u_char *)ip);
512 break;
513 }
514 return;
515 }
516
517 if (!qflag) {
518 register struct rpc_msg *rp;
519 enum msg_type direction;
520
521 rp = (struct rpc_msg *)(up + 1);
522 if (TTEST(rp->rm_direction)) {
523 direction = (enum msg_type)ntohl(rp->rm_direction);
524 if (dport == NFS_PORT && direction == CALL) {
525 nfsreq_print((u_char *)rp, length,
526 (u_char *)ip);
527 return;
528 }
529 if (sport == NFS_PORT && direction == REPLY) {
530 nfsreply_print((u_char *)rp, length,
531 (u_char *)ip);
532 return;
533 }
534 #ifdef notdef
535 if (dport == SUNRPC_PORT && direction == CALL) {
536 sunrpcrequest_print((u_char *)rp, length, (u_char *)ip);
537 return;
538 }
539 #endif
540 }
541 if (TTEST(((struct LAP *)cp)->type) &&
542 ((struct LAP *)cp)->type == lapDDP &&
543 (atalk_port(sport) || atalk_port(dport))) {
544 if (vflag)
545 fputs("kip ", stdout);
546 llap_print(cp, length);
547 return;
548 }
549 }
550 #ifdef INET6
551 if (ip6) {
552 if (ip6->ip6_nxt == IPPROTO_UDP) {
553 (void)printf("%s.%s > %s.%s: ",
554 ip6addr_string(&ip6->ip6_src),
555 udpport_string(sport),
556 ip6addr_string(&ip6->ip6_dst),
557 udpport_string(dport));
558 } else {
559 (void)printf("%s > %s: ",
560 udpport_string(sport), udpport_string(dport));
561 }
562 } else
563 #endif /*INET6*/
564 {
565 if (ip->ip_p == IPPROTO_UDP) {
566 (void)printf("%s.%s > %s.%s: ",
567 ipaddr_string(&ip->ip_src),
568 udpport_string(sport),
569 ipaddr_string(&ip->ip_dst),
570 udpport_string(dport));
571 } else {
572 (void)printf("%s > %s: ",
573 udpport_string(sport), udpport_string(dport));
574 }
575 }
576
577 if (IP_V(ip) == 4 && vflag && !fragmented) {
578 int sum = up->uh_sum;
579 if (sum == 0) {
580 (void)printf("[no cksum] ");
581 } else if (TTEST2(cp[0], length)) {
582 sum = udp_cksum(ip, up, length + sizeof(struct udphdr));
583 if (sum != 0)
584 (void)printf("[bad udp cksum %x!] ", sum);
585 else
586 (void)printf("[udp sum ok] ");
587 }
588 }
589 #ifdef INET6
590 if (IP_V(ip) == 6 && ip6->ip6_plen && vflag && !fragmented) {
591 int sum = up->uh_sum;
592 /* for IPv6, UDP checksum is mandatory */
593 if (TTEST2(cp[0], length)) {
594 sum = udp6_cksum(ip6, up, length);
595 if (sum != 0)
596 (void)printf("[bad udp cksum %x!] ", sum);
597 else
598 (void)printf("[udp sum ok] ");
599 }
600 }
601 #endif
602
603 if (!qflag) {
604 #define ISPORT(p) (dport == (p) || sport == (p))
605 if (ISPORT(NAMESERVER_PORT))
606 ns_print((const u_char *)(up + 1), length);
607 else if (ISPORT(TIMED_PORT))
608 timed_print((const u_char *)(up + 1), length);
609 else if (ISPORT(TFTP_PORT))
610 tftp_print((const u_char *)(up + 1), length);
611 else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))
612 bootp_print((const u_char *)(up + 1), length,
613 sport, dport);
614 else if (ISPORT(RIP_PORT))
615 rip_print((const u_char *)(up + 1), length);
616 else if (ISPORT(ISAKMP_PORT))
617 isakmp_print((const u_char *)(up + 1), length, bp2);
618 #if 1 /*???*/
619 else if (ISPORT(ISAKMP_PORT_USER1) || ISPORT(ISAKMP_PORT_USER2))
620 isakmp_print((const u_char *)(up + 1), length, bp2);
621 #endif
622 else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT))
623 snmp_print((const u_char *)(up + 1), length);
624 else if (ISPORT(NTP_PORT))
625 ntp_print((const u_char *)(up + 1), length);
626 else if (ISPORT(KERBEROS_PORT) || ISPORT(KERBEROS_SEC_PORT))
627 krb_print((const void *)(up + 1), length);
628 else if (ISPORT(L2TP_PORT))
629 l2tp_print((const u_char *)(up + 1), length);
630 else if (ISPORT(NETBIOS_NS_PORT))
631 nbt_udp137_print((const u_char *)(up + 1), length);
632 else if (ISPORT(NETBIOS_DGRAM_PORT))
633 nbt_udp138_print((const u_char *)(up + 1), length);
634 else if (dport == 3456)
635 vat_print((const void *)(up + 1), length, up);
636 /*
637 * Since there are 10 possible ports to check, I think
638 * a <> test would be more efficient
639 */
640 else if ((sport >= RX_PORT_LOW && sport <= RX_PORT_HIGH) ||
641 (dport >= RX_PORT_LOW && dport <= RX_PORT_HIGH))
642 rx_print((const void *)(up + 1), length, sport, dport,
643 (u_char *) ip);
644 #ifdef INET6
645 else if (ISPORT(RIPNG_PORT))
646 ripng_print((const u_char *)(up + 1), length);
647 else if (ISPORT(DHCP6_SERV_PORT) || ISPORT(DHCP6_CLI_PORT)) {
648 dhcp6_print((const u_char *)(up + 1), length,
649 sport, dport);
650 }
651 #endif /*INET6*/
652 /*
653 * Kludge in test for whiteboard packets.
654 */
655 else if (dport == 4567)
656 wb_print((const void *)(up + 1), length);
657 else if (ISPORT(CISCO_AUTORP_PORT))
658 cisco_autorp_print((const void *)(up + 1), length);
659 else if (ISPORT(RADIUS_PORT) ||
660 ISPORT(RADIUS_NEW_PORT) ||
661 ISPORT(RADIUS_ACCOUNTING_PORT) ||
662 ISPORT(RADIUS_NEW_ACCOUNTING_PORT) )
663 radius_print((const u_char *)(up+1), length);
664 else if (ISPORT(LWRES_PORT))
665 lwres_print((const u_char *)(up + 1), length);
666 else
667 (void)printf(" udp %u",
668 (u_int32_t)(ulen - sizeof(*up)));
669 #undef ISPORT
670 } else
671 (void)printf(" udp %u", (u_int32_t)(ulen - sizeof(*up)));
672 }
[mirror] the TCPdump network dissector