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[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 1.115 2003-05-01 18:02:13 guy Exp $ (LBL)";
25 #endif
26
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #include <tcpdump-stdinc.h>
32
33 #ifdef SEGSIZE
34 #undef SEGSIZE
35 #endif
36 #include <arpa/tftp.h>
37
38 #include <rpc/rpc.h>
39
40 #include <stdio.h>
41 #include <string.h>
42
43 #include "interface.h"
44 #include "addrtoname.h"
45 #include "extract.h"
46 #include "appletalk.h"
47
48 #include "udp.h"
49
50 #include "ip.h"
51 #ifdef INET6
52 #include "ip6.h"
53 #endif
54
55 #include "nameser.h"
56 #include "nfs.h"
57 #include "bootp.h"
58
59 struct rtcphdr {
60 u_int16_t rh_flags; /* T:2 P:1 CNT:5 PT:8 */
61 u_int16_t rh_len; /* length of message (in words) */
62 u_int32_t rh_ssrc; /* synchronization src id */
63 };
64
65 typedef struct {
66 u_int32_t upper; /* more significant 32 bits */
67 u_int32_t lower; /* less significant 32 bits */
68 } ntp64;
69
70 /*
71 * Sender report.
72 */
73 struct rtcp_sr {
74 ntp64 sr_ntp; /* 64-bit ntp timestamp */
75 u_int32_t sr_ts; /* reference media timestamp */
76 u_int32_t sr_np; /* no. packets sent */
77 u_int32_t sr_nb; /* no. bytes sent */
78 };
79
80 /*
81 * Receiver report.
82 * Time stamps are middle 32-bits of ntp timestamp.
83 */
84 struct rtcp_rr {
85 u_int32_t rr_srcid; /* sender being reported */
86 u_int32_t rr_nl; /* no. packets lost */
87 u_int32_t rr_ls; /* extended last seq number received */
88 u_int32_t rr_dv; /* jitter (delay variance) */
89 u_int32_t rr_lsr; /* orig. ts from last rr from this src */
90 u_int32_t rr_dlsr; /* time from recpt of last rr to xmit time */
91 };
92
93 /*XXX*/
94 #define RTCP_PT_SR 200
95 #define RTCP_PT_RR 201
96 #define RTCP_PT_SDES 202
97 #define RTCP_SDES_CNAME 1
98 #define RTCP_SDES_NAME 2
99 #define RTCP_SDES_EMAIL 3
100 #define RTCP_SDES_PHONE 4
101 #define RTCP_SDES_LOC 5
102 #define RTCP_SDES_TOOL 6
103 #define RTCP_SDES_NOTE 7
104 #define RTCP_SDES_PRIV 8
105 #define RTCP_PT_BYE 203
106 #define RTCP_PT_APP 204
107
108 static void
109 vat_print(const void *hdr, register const struct udphdr *up)
110 {
111 /* vat/vt audio */
112 u_int ts = *(u_int16_t *)hdr;
113 if ((ts & 0xf060) != 0) {
114 /* probably vt */
115 (void)printf("udp/vt %u %d / %d",
116 (u_int32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up)),
117 ts & 0x3ff, ts >> 10);
118 } else {
119 /* probably vat */
120 u_int32_t i0 = EXTRACT_32BITS(&((u_int *)hdr)[0]);
121 u_int32_t i1 = EXTRACT_32BITS(&((u_int *)hdr)[1]);
122 printf("udp/vat %u c%d %u%s",
123 (u_int32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up) - 8),
124 i0 & 0xffff,
125 i1, i0 & 0x800000? "*" : "");
126 /* audio format */
127 if (i0 & 0x1f0000)
128 printf(" f%d", (i0 >> 16) & 0x1f);
129 if (i0 & 0x3f000000)
130 printf(" s%d", (i0 >> 24) & 0x3f);
131 }
132 }
133
134 static void
135 rtp_print(const void *hdr, u_int len, register const struct udphdr *up)
136 {
137 /* rtp v1 or v2 */
138 u_int *ip = (u_int *)hdr;
139 u_int hasopt, hasext, contype, hasmarker;
140 u_int32_t i0 = EXTRACT_32BITS(&((u_int *)hdr)[0]);
141 u_int32_t i1 = EXTRACT_32BITS(&((u_int *)hdr)[1]);
142 u_int dlen = EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up) - 8;
143 const char * ptype;
144
145 ip += 2;
146 len >>= 2;
147 len -= 2;
148 hasopt = 0;
149 hasext = 0;
150 if ((i0 >> 30) == 1) {
151 /* rtp v1 */
152 hasopt = i0 & 0x800000;
153 contype = (i0 >> 16) & 0x3f;
154 hasmarker = i0 & 0x400000;
155 ptype = "rtpv1";
156 } else {
157 /* rtp v2 */
158 hasext = i0 & 0x10000000;
159 contype = (i0 >> 16) & 0x7f;
160 hasmarker = i0 & 0x800000;
161 dlen -= 4;
162 ptype = "rtp";
163 ip += 1;
164 len -= 1;
165 }
166 printf("udp/%s %d c%d %s%s %d %u",
167 ptype,
168 dlen,
169 contype,
170 (hasopt || hasext)? "+" : "",
171 hasmarker? "*" : "",
172 i0 & 0xffff,
173 i1);
174 if (vflag) {
175 printf(" %u", EXTRACT_32BITS(&((u_int *)hdr)[2]));
176 if (hasopt) {
177 u_int i2, optlen;
178 do {
179 i2 = ip[0];
180 optlen = (i2 >> 16) & 0xff;
181 if (optlen == 0 || optlen > len) {
182 printf(" !opt");
183 return;
184 }
185 ip += optlen;
186 len -= optlen;
187 } while ((int)i2 >= 0);
188 }
189 if (hasext) {
190 u_int i2, extlen;
191 i2 = ip[0];
192 extlen = (i2 & 0xffff) + 1;
193 if (extlen > len) {
194 printf(" !ext");
195 return;
196 }
197 ip += extlen;
198 }
199 if (contype == 0x1f) /*XXX H.261 */
200 printf(" 0x%04x", ip[0] >> 16);
201 }
202 }
203
204 static const u_char *
205 rtcp_print(const u_char *hdr, const u_char *ep)
206 {
207 /* rtp v2 control (rtcp) */
208 struct rtcp_rr *rr = 0;
209 struct rtcp_sr *sr;
210 struct rtcphdr *rh = (struct rtcphdr *)hdr;
211 u_int len;
212 u_int16_t flags;
213 int cnt;
214 double ts, dts;
215 if ((u_char *)(rh + 1) > ep) {
216 printf(" [|rtcp]");
217 return (ep);
218 }
219 len = (EXTRACT_16BITS(&rh->rh_len) + 1) * 4;
220 flags = EXTRACT_16BITS(&rh->rh_flags);
221 cnt = (flags >> 8) & 0x1f;
222 switch (flags & 0xff) {
223 case RTCP_PT_SR:
224 sr = (struct rtcp_sr *)(rh + 1);
225 printf(" sr");
226 if (len != cnt * sizeof(*rr) + sizeof(*sr) + sizeof(*rh))
227 printf(" [%d]", len);
228 if (vflag)
229 printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
230 if ((u_char *)(sr + 1) > ep) {
231 printf(" [|rtcp]");
232 return (ep);
233 }
234 ts = (double)(EXTRACT_32BITS(&sr->sr_ntp.upper)) +
235 ((double)(EXTRACT_32BITS(&sr->sr_ntp.lower)) /
236 4294967296.0);
237 printf(" @%.2f %u %up %ub", ts, EXTRACT_32BITS(&sr->sr_ts),
238 EXTRACT_32BITS(&sr->sr_np), EXTRACT_32BITS(&sr->sr_nb));
239 rr = (struct rtcp_rr *)(sr + 1);
240 break;
241 case RTCP_PT_RR:
242 printf(" rr");
243 if (len != cnt * sizeof(*rr) + sizeof(*rh))
244 printf(" [%d]", len);
245 rr = (struct rtcp_rr *)(rh + 1);
246 if (vflag)
247 printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
248 break;
249 case RTCP_PT_SDES:
250 printf(" sdes %d", len);
251 if (vflag)
252 printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
253 cnt = 0;
254 break;
255 case RTCP_PT_BYE:
256 printf(" bye %d", len);
257 if (vflag)
258 printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
259 cnt = 0;
260 break;
261 default:
262 printf(" type-0x%x %d", flags & 0xff, len);
263 cnt = 0;
264 break;
265 }
266 if (cnt > 1)
267 printf(" c%d", cnt);
268 while (--cnt >= 0) {
269 if ((u_char *)(rr + 1) > ep) {
270 printf(" [|rtcp]");
271 return (ep);
272 }
273 if (vflag)
274 printf(" %u", EXTRACT_32BITS(&rr->rr_srcid));
275 ts = (double)(EXTRACT_32BITS(&rr->rr_lsr)) / 65536.;
276 dts = (double)(EXTRACT_32BITS(&rr->rr_dlsr)) / 65536.;
277 printf(" %ul %us %uj @%.2f+%.2f",
278 EXTRACT_32BITS(&rr->rr_nl) & 0x00ffffff,
279 EXTRACT_32BITS(&rr->rr_ls),
280 EXTRACT_32BITS(&rr->rr_dv), ts, dts);
281 }
282 return (hdr + len);
283 }
284
285 static int udp_cksum(register const struct ip *ip,
286 register const struct udphdr *up,
287 register int len)
288 {
289 union phu {
290 struct phdr {
291 u_int32_t src;
292 u_int32_t dst;
293 u_char mbz;
294 u_char proto;
295 u_int16_t len;
296 } ph;
297 u_int16_t pa[6];
298 } phu;
299 register const u_int16_t *sp;
300
301 /* pseudo-header.. */
302 phu.ph.len = htons(len);
303 phu.ph.mbz = 0;
304 phu.ph.proto = IPPROTO_UDP;
305 memcpy(&phu.ph.src, &ip->ip_src.s_addr, sizeof(u_int32_t));
306 if (IP_HL(ip) == 5)
307 memcpy(&phu.ph.dst, &ip->ip_dst.s_addr, sizeof(u_int32_t));
308 else
309 phu.ph.dst = ip_finddst(ip);
310
311 sp = &phu.pa[0];
312 return in_cksum((u_short *)up, len,
313 sp[0]+sp[1]+sp[2]+sp[3]+sp[4]+sp[5]);
314 }
315
316 #ifdef INET6
317 static int udp6_cksum(const struct ip6_hdr *ip6, const struct udphdr *up,
318 int len)
319 {
320 int i, tlen;
321 register const u_int16_t *sp;
322 u_int32_t sum;
323 union {
324 struct {
325 struct in6_addr ph_src;
326 struct in6_addr ph_dst;
327 u_int32_t ph_len;
328 u_int8_t ph_zero[3];
329 u_int8_t ph_nxt;
330 } ph;
331 u_int16_t pa[20];
332 } phu;
333
334 tlen = EXTRACT_16BITS(&ip6->ip6_plen) + sizeof(struct ip6_hdr) -
335 ((const char *)up - (const char*)ip6);
336
337 /* pseudo-header */
338 memset(&phu, 0, sizeof(phu));
339 phu.ph.ph_src = ip6->ip6_src;
340 phu.ph.ph_dst = ip6->ip6_dst;
341 phu.ph.ph_len = htonl(tlen);
342 phu.ph.ph_nxt = IPPROTO_UDP;
343
344 sum = 0;
345 for (i = 0; i < sizeof(phu.pa) / sizeof(phu.pa[0]); i++)
346 sum += phu.pa[i];
347
348 sp = (const u_int16_t *)up;
349
350 for (i = 0; i < (tlen & ~1); i += 2)
351 sum += *sp++;
352
353 if (tlen & 1)
354 sum += htons((*(const u_int8_t *)sp) << 8);
355
356 while (sum > 0xffff)
357 sum = (sum & 0xffff) + (sum >> 16);
358 sum = ~sum & 0xffff;
359
360 return (sum);
361 }
362 #endif
363
364
365 /* XXX probably should use getservbyname() and cache answers */
366 #define TFTP_PORT 69 /*XXX*/
367 #define KERBEROS_PORT 88 /*XXX*/
368 #define SUNRPC_PORT 111 /*XXX*/
369 #define SNMP_PORT 161 /*XXX*/
370 #define NTP_PORT 123 /*XXX*/
371 #define SNMPTRAP_PORT 162 /*XXX*/
372 #define ISAKMP_PORT 500 /*XXX*/
373 #define TIMED_PORT 525 /*XXX*/
374 #define RIP_PORT 520 /*XXX*/
375 #define LDP_PORT 646
376 #define KERBEROS_SEC_PORT 750 /*XXX*/
377 #define L2TP_PORT 1701 /*XXX*/
378 #define ISAKMP_PORT_USER1 7500 /*XXX - nonstandard*/
379 #define ISAKMP_PORT_USER2 8500 /*XXX - nonstandard*/
380 #define RX_PORT_LOW 7000 /*XXX*/
381 #define RX_PORT_HIGH 7009 /*XXX*/
382 #define NETBIOS_NS_PORT 137
383 #define NETBIOS_DGRAM_PORT 138
384 #define CISCO_AUTORP_PORT 496 /*XXX*/
385 #define RADIUS_PORT 1645
386 #define RADIUS_NEW_PORT 1812
387 #define RADIUS_ACCOUNTING_PORT 1646
388 #define RADIUS_NEW_ACCOUNTING_PORT 1813
389 #define HSRP_PORT 1985 /*XXX*/
390 #define LWRES_PORT 921
391 #define ZEPHYR_SRV_PORT 2103
392 #define ZEPHYR_CLT_PORT 2104
393
394 #ifdef INET6
395 #define RIPNG_PORT 521 /*XXX*/
396 #define DHCP6_SERV_PORT 546 /*XXX*/
397 #define DHCP6_CLI_PORT 547 /*XXX*/
398 #endif
399
400 static void
401 udpipaddr_print(const struct ip *ip, u_int16_t sport, u_int16_t dport)
402 {
403 #ifdef INET6
404 const struct ip6_hdr *ip6;
405
406 if (IP_V(ip) == 6)
407 ip6 = (const struct ip6_hdr *)ip;
408 else
409 ip6 = NULL;
410
411 if (ip6) {
412 if (ip6->ip6_nxt == IPPROTO_UDP) {
413 (void)printf("%s.%s > %s.%s: ",
414 ip6addr_string(&ip6->ip6_src),
415 udpport_string(sport),
416 ip6addr_string(&ip6->ip6_dst),
417 udpport_string(dport));
418 } else {
419 (void)printf("%s > %s: ",
420 udpport_string(sport), udpport_string(dport));
421 }
422 } else
423 #endif /*INET6*/
424 {
425 if (ip->ip_p == IPPROTO_UDP) {
426 (void)printf("%s.%s > %s.%s: ",
427 ipaddr_string(&ip->ip_src),
428 udpport_string(sport),
429 ipaddr_string(&ip->ip_dst),
430 udpport_string(dport));
431 } else {
432 (void)printf("%s > %s: ",
433 udpport_string(sport), udpport_string(dport));
434 }
435 }
436 }
437
438 void
439 udp_print(register const u_char *bp, u_int length,
440 register const u_char *bp2, int fragmented)
441 {
442 register const struct udphdr *up;
443 register const struct ip *ip;
444 register const u_char *cp;
445 register const u_char *ep = bp + length;
446 u_int16_t sport, dport, ulen;
447 #ifdef INET6
448 register const struct ip6_hdr *ip6;
449 #endif
450
451 if (ep > snapend)
452 ep = snapend;
453 up = (struct udphdr *)bp;
454 ip = (struct ip *)bp2;
455 #ifdef INET6
456 if (IP_V(ip) == 6)
457 ip6 = (struct ip6_hdr *)bp2;
458 else
459 ip6 = NULL;
460 #endif /*INET6*/
461 cp = (u_char *)(up + 1);
462 if (cp > snapend) {
463 (void)printf("%s > %s: [|udp]",
464 ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst));
465 return;
466 }
467 if (length < sizeof(struct udphdr)) {
468 (void)printf("%s > %s: truncated-udp %d",
469 ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst),
470 length);
471 return;
472 }
473 length -= sizeof(struct udphdr);
474
475 sport = EXTRACT_16BITS(&up->uh_sport);
476 dport = EXTRACT_16BITS(&up->uh_dport);
477 ulen = EXTRACT_16BITS(&up->uh_ulen);
478 if (ulen < 8) {
479 (void)printf("%s > %s: truncated-udplength %d",
480 ipaddr_string(&ip->ip_src),
481 ipaddr_string(&ip->ip_dst),
482 ulen);
483 return;
484 }
485 if (packettype) {
486 register struct rpc_msg *rp;
487 enum msg_type direction;
488
489 switch (packettype) {
490
491 case PT_VAT:
492 udpipaddr_print(ip, sport, dport);
493 vat_print((void *)(up + 1), up);
494 break;
495
496 case PT_WB:
497 udpipaddr_print(ip, sport, dport);
498 wb_print((void *)(up + 1), length);
499 break;
500
501 case PT_RPC:
502 rp = (struct rpc_msg *)(up + 1);
503 direction = (enum msg_type)EXTRACT_32BITS(&rp->rm_direction);
504 if (direction == CALL)
505 sunrpcrequest_print((u_char *)rp, length,
506 (u_char *)ip);
507 else
508 nfsreply_print((u_char *)rp, length,
509 (u_char *)ip); /*XXX*/
510 break;
511
512 case PT_RTP:
513 udpipaddr_print(ip, sport, dport);
514 rtp_print((void *)(up + 1), length, up);
515 break;
516
517 case PT_RTCP:
518 udpipaddr_print(ip, sport, dport);
519 while (cp < ep)
520 cp = rtcp_print(cp, ep);
521 break;
522
523 case PT_SNMP:
524 udpipaddr_print(ip, sport, dport);
525 snmp_print((const u_char *)(up + 1), length);
526 break;
527
528 case PT_CNFP:
529 udpipaddr_print(ip, sport, dport);
530 cnfp_print(cp, (const u_char *)ip);
531 break;
532 }
533 return;
534 }
535
536 if (!qflag) {
537 register struct rpc_msg *rp;
538 enum msg_type direction;
539
540 rp = (struct rpc_msg *)(up + 1);
541 if (TTEST(rp->rm_direction)) {
542 direction = (enum msg_type)EXTRACT_32BITS(&rp->rm_direction);
543 if (dport == NFS_PORT && direction == CALL) {
544 nfsreq_print((u_char *)rp, length,
545 (u_char *)ip);
546 return;
547 }
548 if (sport == NFS_PORT && direction == REPLY) {
549 nfsreply_print((u_char *)rp, length,
550 (u_char *)ip);
551 return;
552 }
553 #ifdef notdef
554 if (dport == SUNRPC_PORT && direction == CALL) {
555 sunrpcrequest_print((u_char *)rp, length, (u_char *)ip);
556 return;
557 }
558 #endif
559 }
560 if (TTEST(((struct LAP *)cp)->type) &&
561 ((struct LAP *)cp)->type == lapDDP &&
562 (atalk_port(sport) || atalk_port(dport))) {
563 if (vflag)
564 fputs("kip ", stdout);
565 llap_print(cp, length);
566 return;
567 }
568 }
569 udpipaddr_print(ip, sport, dport);
570
571 if (IP_V(ip) == 4 && vflag && !fragmented) {
572 int sum = up->uh_sum;
573 if (sum == 0) {
574 (void)printf("[no cksum] ");
575 } else if (TTEST2(cp[0], length)) {
576 sum = udp_cksum(ip, up, length + sizeof(struct udphdr));
577 if (sum != 0)
578 (void)printf("[bad udp cksum %x!] ", sum);
579 else
580 (void)printf("[udp sum ok] ");
581 }
582 }
583 #ifdef INET6
584 if (IP_V(ip) == 6 && ip6->ip6_plen && vflag && !fragmented) {
585 int sum = up->uh_sum;
586 /* for IPv6, UDP checksum is mandatory */
587 if (TTEST2(cp[0], length)) {
588 sum = udp6_cksum(ip6, up, length);
589 if (sum != 0)
590 (void)printf("[bad udp cksum %x!] ", sum);
591 else
592 (void)printf("[udp sum ok] ");
593 }
594 }
595 #endif
596
597 if (!qflag) {
598 #define ISPORT(p) (dport == (p) || sport == (p))
599 if (ISPORT(NAMESERVER_PORT) || ISPORT(MULTICASTDNS_PORT))
600 ns_print((const u_char *)(up + 1), length);
601 else if (ISPORT(TIMED_PORT))
602 timed_print((const u_char *)(up + 1));
603 else if (ISPORT(TFTP_PORT))
604 tftp_print((const u_char *)(up + 1), length);
605 else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))
606 bootp_print((const u_char *)(up + 1), length);
607 else if (ISPORT(RIP_PORT))
608 rip_print((const u_char *)(up + 1), length);
609 else if (ISPORT(ISAKMP_PORT))
610 isakmp_print((const u_char *)(up + 1), length, bp2);
611 #if 1 /*???*/
612 else if (ISPORT(ISAKMP_PORT_USER1) || ISPORT(ISAKMP_PORT_USER2))
613 isakmp_print((const u_char *)(up + 1), length, bp2);
614 #endif
615 else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT))
616 snmp_print((const u_char *)(up + 1), length);
617 else if (ISPORT(NTP_PORT))
618 ntp_print((const u_char *)(up + 1), length);
619 else if (ISPORT(KERBEROS_PORT) || ISPORT(KERBEROS_SEC_PORT))
620 krb_print((const void *)(up + 1));
621 else if (ISPORT(L2TP_PORT))
622 l2tp_print((const u_char *)(up + 1), length);
623 #ifdef TCPDUMP_DO_SMB
624 else if (ISPORT(NETBIOS_NS_PORT))
625 nbt_udp137_print((const u_char *)(up + 1), length);
626 else if (ISPORT(NETBIOS_DGRAM_PORT))
627 nbt_udp138_print((const u_char *)(up + 1), length);
628 #endif
629 else if (dport == 3456)
630 vat_print((const void *)(up + 1), up);
631 else if (ISPORT(ZEPHYR_SRV_PORT) || ISPORT(ZEPHYR_CLT_PORT))
632 zephyr_print((const void *)(up + 1), length);
633 /*
634 * Since there are 10 possible ports to check, I think
635 * a <> test would be more efficient
636 */
637 else if ((sport >= RX_PORT_LOW && sport <= RX_PORT_HIGH) ||
638 (dport >= RX_PORT_LOW && dport <= RX_PORT_HIGH))
639 rx_print((const void *)(up + 1), length, sport, dport,
640 (u_char *) ip);
641 #ifdef INET6
642 else if (ISPORT(RIPNG_PORT))
643 ripng_print((const u_char *)(up + 1), length);
644 else if (ISPORT(DHCP6_SERV_PORT) || ISPORT(DHCP6_CLI_PORT)) {
645 dhcp6_print((const u_char *)(up + 1), length,
646 sport, dport);
647 }
648 #endif /*INET6*/
649 /*
650 * Kludge in test for whiteboard packets.
651 */
652 else if (dport == 4567)
653 wb_print((const void *)(up + 1), length);
654 else if (ISPORT(CISCO_AUTORP_PORT))
655 cisco_autorp_print((const void *)(up + 1), length);
656 else if (ISPORT(RADIUS_PORT) ||
657 ISPORT(RADIUS_NEW_PORT) ||
658 ISPORT(RADIUS_ACCOUNTING_PORT) ||
659 ISPORT(RADIUS_NEW_ACCOUNTING_PORT) )
660 radius_print((const u_char *)(up+1), length);
661 else if (dport == HSRP_PORT)
662 hsrp_print((const u_char *)(up + 1), length);
663 else if (ISPORT(LWRES_PORT))
664 lwres_print((const u_char *)(up + 1), length);
665 else if (ISPORT(LDP_PORT))
666 ldp_print((const u_char *)(up + 1), length);
667 else
668 (void)printf("udp %u",
669 (u_int32_t)(ulen - sizeof(*up)));
670 #undef ISPORT
671 } else
672 (void)printf("udp %u", (u_int32_t)(ulen - sizeof(*up)));
673 }
[mirror] the TCPdump network dissector