xref: /freebsd/contrib/tcpdump/print-udp.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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  * $FreeBSD$
22  */
23 
24 #ifndef lint
25 static const char rcsid[] _U_ =
26     "@(#) $Header: /tcpdump/master/tcpdump/print-udp.c,v 1.138.2.1 2007/03/28 07:45:46 hannes Exp $ (LBL)";
27 #endif
28 
29 #ifdef HAVE_CONFIG_H
30 #include "config.h"
31 #endif
32 
33 #include <tcpdump-stdinc.h>
34 
35 #ifdef SEGSIZE
36 #undef SEGSIZE
37 #endif
38 #include <arpa/tftp.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 #include "ipproto.h"
55 #include "rpc_auth.h"
56 #include "rpc_msg.h"
57 
58 #include "nameser.h"
59 #include "nfs.h"
60 #include "bootp.h"
61 
62 struct rtcphdr {
63 	u_int16_t rh_flags;	/* T:2 P:1 CNT:5 PT:8 */
64 	u_int16_t rh_len;	/* length of message (in words) */
65 	u_int32_t rh_ssrc;	/* synchronization src id */
66 };
67 
68 typedef struct {
69 	u_int32_t upper;	/* more significant 32 bits */
70 	u_int32_t lower;	/* less significant 32 bits */
71 } ntp64;
72 
73 /*
74  * Sender report.
75  */
76 struct rtcp_sr {
77 	ntp64 sr_ntp;		/* 64-bit ntp timestamp */
78 	u_int32_t sr_ts;	/* reference media timestamp */
79 	u_int32_t sr_np;	/* no. packets sent */
80 	u_int32_t sr_nb;	/* no. bytes sent */
81 };
82 
83 /*
84  * Receiver report.
85  * Time stamps are middle 32-bits of ntp timestamp.
86  */
87 struct rtcp_rr {
88 	u_int32_t rr_srcid;	/* sender being reported */
89 	u_int32_t rr_nl;	/* no. packets lost */
90 	u_int32_t rr_ls;	/* extended last seq number received */
91 	u_int32_t rr_dv;	/* jitter (delay variance) */
92 	u_int32_t rr_lsr;	/* orig. ts from last rr from this src  */
93 	u_int32_t rr_dlsr;	/* time from recpt of last rr to xmit time */
94 };
95 
96 /*XXX*/
97 #define RTCP_PT_SR	200
98 #define RTCP_PT_RR	201
99 #define RTCP_PT_SDES	202
100 #define 	RTCP_SDES_CNAME	1
101 #define 	RTCP_SDES_NAME	2
102 #define 	RTCP_SDES_EMAIL	3
103 #define 	RTCP_SDES_PHONE	4
104 #define 	RTCP_SDES_LOC	5
105 #define 	RTCP_SDES_TOOL	6
106 #define 	RTCP_SDES_NOTE	7
107 #define 	RTCP_SDES_PRIV	8
108 #define RTCP_PT_BYE	203
109 #define RTCP_PT_APP	204
110 
111 static void
112 vat_print(const void *hdr, register const struct udphdr *up)
113 {
114 	/* vat/vt audio */
115 	u_int ts = *(u_int16_t *)hdr;
116 	if ((ts & 0xf060) != 0) {
117 		/* probably vt */
118 		(void)printf("udp/vt %u %d / %d",
119 			     (u_int32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up)),
120 			     ts & 0x3ff, ts >> 10);
121 	} else {
122 		/* probably vat */
123 		u_int32_t i0 = EXTRACT_32BITS(&((u_int *)hdr)[0]);
124 		u_int32_t i1 = EXTRACT_32BITS(&((u_int *)hdr)[1]);
125 		printf("udp/vat %u c%d %u%s",
126 			(u_int32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up) - 8),
127 			i0 & 0xffff,
128 			i1, i0 & 0x800000? "*" : "");
129 		/* audio format */
130 		if (i0 & 0x1f0000)
131 			printf(" f%d", (i0 >> 16) & 0x1f);
132 		if (i0 & 0x3f000000)
133 			printf(" s%d", (i0 >> 24) & 0x3f);
134 	}
135 }
136 
137 static void
138 rtp_print(const void *hdr, u_int len, register const struct udphdr *up)
139 {
140 	/* rtp v1 or v2 */
141 	u_int *ip = (u_int *)hdr;
142 	u_int hasopt, hasext, contype, hasmarker;
143 	u_int32_t i0 = EXTRACT_32BITS(&((u_int *)hdr)[0]);
144 	u_int32_t i1 = EXTRACT_32BITS(&((u_int *)hdr)[1]);
145 	u_int dlen = EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up) - 8;
146 	const char * ptype;
147 
148 	ip += 2;
149 	len >>= 2;
150 	len -= 2;
151 	hasopt = 0;
152 	hasext = 0;
153 	if ((i0 >> 30) == 1) {
154 		/* rtp v1 */
155 		hasopt = i0 & 0x800000;
156 		contype = (i0 >> 16) & 0x3f;
157 		hasmarker = i0 & 0x400000;
158 		ptype = "rtpv1";
159 	} else {
160 		/* rtp v2 */
161 		hasext = i0 & 0x10000000;
162 		contype = (i0 >> 16) & 0x7f;
163 		hasmarker = i0 & 0x800000;
164 		dlen -= 4;
165 		ptype = "rtp";
166 		ip += 1;
167 		len -= 1;
168 	}
169 	printf("udp/%s %d c%d %s%s %d %u",
170 		ptype,
171 		dlen,
172 		contype,
173 		(hasopt || hasext)? "+" : "",
174 		hasmarker? "*" : "",
175 		i0 & 0xffff,
176 		i1);
177 	if (vflag) {
178 		printf(" %u", EXTRACT_32BITS(&((u_int *)hdr)[2]));
179 		if (hasopt) {
180 			u_int i2, optlen;
181 			do {
182 				i2 = ip[0];
183 				optlen = (i2 >> 16) & 0xff;
184 				if (optlen == 0 || optlen > len) {
185 					printf(" !opt");
186 					return;
187 				}
188 				ip += optlen;
189 				len -= optlen;
190 			} while ((int)i2 >= 0);
191 		}
192 		if (hasext) {
193 			u_int i2, extlen;
194 			i2 = ip[0];
195 			extlen = (i2 & 0xffff) + 1;
196 			if (extlen > len) {
197 				printf(" !ext");
198 				return;
199 			}
200 			ip += extlen;
201 		}
202 		if (contype == 0x1f) /*XXX H.261 */
203 			printf(" 0x%04x", ip[0] >> 16);
204 	}
205 }
206 
207 static const u_char *
208 rtcp_print(const u_char *hdr, const u_char *ep)
209 {
210 	/* rtp v2 control (rtcp) */
211 	struct rtcp_rr *rr = 0;
212 	struct rtcp_sr *sr;
213 	struct rtcphdr *rh = (struct rtcphdr *)hdr;
214 	u_int len;
215 	u_int16_t flags;
216 	int cnt;
217 	double ts, dts;
218 	if ((u_char *)(rh + 1) > ep) {
219 		printf(" [|rtcp]");
220 		return (ep);
221 	}
222 	len = (EXTRACT_16BITS(&rh->rh_len) + 1) * 4;
223 	flags = EXTRACT_16BITS(&rh->rh_flags);
224 	cnt = (flags >> 8) & 0x1f;
225 	switch (flags & 0xff) {
226 	case RTCP_PT_SR:
227 		sr = (struct rtcp_sr *)(rh + 1);
228 		printf(" sr");
229 		if (len != cnt * sizeof(*rr) + sizeof(*sr) + sizeof(*rh))
230 			printf(" [%d]", len);
231 		if (vflag)
232 			printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
233 		if ((u_char *)(sr + 1) > ep) {
234 			printf(" [|rtcp]");
235 			return (ep);
236 		}
237 		ts = (double)(EXTRACT_32BITS(&sr->sr_ntp.upper)) +
238 		    ((double)(EXTRACT_32BITS(&sr->sr_ntp.lower)) /
239 		    4294967296.0);
240 		printf(" @%.2f %u %up %ub", ts, EXTRACT_32BITS(&sr->sr_ts),
241 		    EXTRACT_32BITS(&sr->sr_np), EXTRACT_32BITS(&sr->sr_nb));
242 		rr = (struct rtcp_rr *)(sr + 1);
243 		break;
244 	case RTCP_PT_RR:
245 		printf(" rr");
246 		if (len != cnt * sizeof(*rr) + sizeof(*rh))
247 			printf(" [%d]", len);
248 		rr = (struct rtcp_rr *)(rh + 1);
249 		if (vflag)
250 			printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
251 		break;
252 	case RTCP_PT_SDES:
253 		printf(" sdes %d", len);
254 		if (vflag)
255 			printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
256 		cnt = 0;
257 		break;
258 	case RTCP_PT_BYE:
259 		printf(" bye %d", len);
260 		if (vflag)
261 			printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
262 		cnt = 0;
263 		break;
264 	default:
265 		printf(" type-0x%x %d", flags & 0xff, len);
266 		cnt = 0;
267 		break;
268 	}
269 	if (cnt > 1)
270 		printf(" c%d", cnt);
271 	while (--cnt >= 0) {
272 		if ((u_char *)(rr + 1) > ep) {
273 			printf(" [|rtcp]");
274 			return (ep);
275 		}
276 		if (vflag)
277 			printf(" %u", EXTRACT_32BITS(&rr->rr_srcid));
278 		ts = (double)(EXTRACT_32BITS(&rr->rr_lsr)) / 65536.;
279 		dts = (double)(EXTRACT_32BITS(&rr->rr_dlsr)) / 65536.;
280 		printf(" %ul %us %uj @%.2f+%.2f",
281 		    EXTRACT_32BITS(&rr->rr_nl) & 0x00ffffff,
282 		    EXTRACT_32BITS(&rr->rr_ls),
283 		    EXTRACT_32BITS(&rr->rr_dv), ts, dts);
284 	}
285 	return (hdr + len);
286 }
287 
288 static int udp_cksum(register const struct ip *ip,
289 		     register const struct udphdr *up,
290 		     register u_int len)
291 {
292 	union phu {
293 		struct phdr {
294 			u_int32_t src;
295 			u_int32_t dst;
296 			u_char mbz;
297 			u_char proto;
298 			u_int16_t len;
299 		} ph;
300 		u_int16_t pa[6];
301 	} phu;
302 	register const u_int16_t *sp;
303 
304 	/* pseudo-header.. */
305 	phu.ph.len = htons((u_int16_t)len);
306 	phu.ph.mbz = 0;
307 	phu.ph.proto = IPPROTO_UDP;
308 	memcpy(&phu.ph.src, &ip->ip_src.s_addr, sizeof(u_int32_t));
309 	if (IP_HL(ip) == 5)
310 		memcpy(&phu.ph.dst, &ip->ip_dst.s_addr, sizeof(u_int32_t));
311 	else
312 		phu.ph.dst = ip_finddst(ip);
313 
314 	sp = &phu.pa[0];
315 	return in_cksum((u_short *)up, len,
316 			sp[0]+sp[1]+sp[2]+sp[3]+sp[4]+sp[5]);
317 }
318 
319 #ifdef INET6
320 static int udp6_cksum(const struct ip6_hdr *ip6, const struct udphdr *up,
321 	u_int len)
322 {
323 	size_t i;
324 	register const u_int16_t *sp;
325 	u_int32_t sum;
326 	union {
327 		struct {
328 			struct in6_addr ph_src;
329 			struct in6_addr ph_dst;
330 			u_int32_t	ph_len;
331 			u_int8_t	ph_zero[3];
332 			u_int8_t	ph_nxt;
333 		} ph;
334 		u_int16_t pa[20];
335 	} phu;
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(len);
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 < (len & ~1); i += 2)
351 		sum += *sp++;
352 
353 	if (len & 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 static void
365 udpipaddr_print(const struct ip *ip, int sport, int dport)
366 {
367 #ifdef INET6
368 	const struct ip6_hdr *ip6;
369 
370 	if (IP_V(ip) == 6)
371 		ip6 = (const struct ip6_hdr *)ip;
372 	else
373 		ip6 = NULL;
374 
375 	if (ip6) {
376 		if (ip6->ip6_nxt == IPPROTO_UDP) {
377 			if (sport == -1) {
378 				(void)printf("%s > %s: ",
379 					ip6addr_string(&ip6->ip6_src),
380 					ip6addr_string(&ip6->ip6_dst));
381 			} else {
382 				(void)printf("%s.%s > %s.%s: ",
383 					ip6addr_string(&ip6->ip6_src),
384 					udpport_string(sport),
385 					ip6addr_string(&ip6->ip6_dst),
386 					udpport_string(dport));
387 			}
388 		} else {
389 			if (sport != -1) {
390 				(void)printf("%s > %s: ",
391 					udpport_string(sport),
392 					udpport_string(dport));
393 			}
394 		}
395 	} else
396 #endif /*INET6*/
397 	{
398 		if (ip->ip_p == IPPROTO_UDP) {
399 			if (sport == -1) {
400 				(void)printf("%s > %s: ",
401 					ipaddr_string(&ip->ip_src),
402 					ipaddr_string(&ip->ip_dst));
403 			} else {
404 				(void)printf("%s.%s > %s.%s: ",
405 					ipaddr_string(&ip->ip_src),
406 					udpport_string(sport),
407 					ipaddr_string(&ip->ip_dst),
408 					udpport_string(dport));
409 			}
410 		} else {
411 			if (sport != -1) {
412 				(void)printf("%s > %s: ",
413 					udpport_string(sport),
414 					udpport_string(dport));
415 			}
416 		}
417 	}
418 }
419 
420 void
421 udp_print(register const u_char *bp, u_int length,
422 	  register const u_char *bp2, int fragmented)
423 {
424 	register const struct udphdr *up;
425 	register const struct ip *ip;
426 	register const u_char *cp;
427 	register const u_char *ep = bp + length;
428 	u_int16_t sport, dport, ulen;
429 #ifdef INET6
430 	register const struct ip6_hdr *ip6;
431 #endif
432 
433 	if (ep > snapend)
434 		ep = snapend;
435 	up = (struct udphdr *)bp;
436 	ip = (struct ip *)bp2;
437 #ifdef INET6
438 	if (IP_V(ip) == 6)
439 		ip6 = (struct ip6_hdr *)bp2;
440 	else
441 		ip6 = NULL;
442 #endif /*INET6*/
443 	cp = (u_char *)(up + 1);
444 	if (!TTEST(up->uh_dport)) {
445 		udpipaddr_print(ip, -1, -1);
446 		(void)printf("[|udp]");
447 		return;
448 	}
449 
450 	sport = EXTRACT_16BITS(&up->uh_sport);
451 	dport = EXTRACT_16BITS(&up->uh_dport);
452 
453 	if (length < sizeof(struct udphdr)) {
454 		udpipaddr_print(ip, sport, dport);
455 		(void)printf("truncated-udp %d", length);
456 		return;
457 	}
458 	length -= sizeof(struct udphdr);
459 
460 	if (cp > snapend) {
461 		udpipaddr_print(ip, sport, dport);
462 		(void)printf("[|udp]");
463 		return;
464 	}
465 
466 	ulen = EXTRACT_16BITS(&up->uh_ulen);
467 	if (ulen < 8) {
468 		udpipaddr_print(ip, sport, dport);
469 		(void)printf("truncated-udplength %d", ulen);
470 		return;
471 	}
472 	if (packettype) {
473 		register struct sunrpc_msg *rp;
474 		enum sunrpc_msg_type direction;
475 
476 		switch (packettype) {
477 
478 		case PT_VAT:
479 			udpipaddr_print(ip, sport, dport);
480 			vat_print((void *)(up + 1), up);
481 			break;
482 
483 		case PT_WB:
484 			udpipaddr_print(ip, sport, dport);
485 			wb_print((void *)(up + 1), length);
486 			break;
487 
488 		case PT_RPC:
489 			rp = (struct sunrpc_msg *)(up + 1);
490 			direction = (enum sunrpc_msg_type)EXTRACT_32BITS(&rp->rm_direction);
491 			if (direction == SUNRPC_CALL)
492 				sunrpcrequest_print((u_char *)rp, length,
493 				    (u_char *)ip);
494 			else
495 				nfsreply_print((u_char *)rp, length,
496 				    (u_char *)ip);			/*XXX*/
497 			break;
498 
499 		case PT_RTP:
500 			udpipaddr_print(ip, sport, dport);
501 			rtp_print((void *)(up + 1), length, up);
502 			break;
503 
504 		case PT_RTCP:
505 			udpipaddr_print(ip, sport, dport);
506 			while (cp < ep)
507 				cp = rtcp_print(cp, ep);
508 			break;
509 
510 		case PT_SNMP:
511 			udpipaddr_print(ip, sport, dport);
512 			snmp_print((const u_char *)(up + 1), length);
513 			break;
514 
515 		case PT_CNFP:
516 			udpipaddr_print(ip, sport, dport);
517 			cnfp_print(cp, (const u_char *)ip);
518 			break;
519 
520 		case PT_TFTP:
521 			udpipaddr_print(ip, sport, dport);
522 			tftp_print(cp, length);
523 			break;
524 
525 		case PT_AODV:
526 			udpipaddr_print(ip, sport, dport);
527 			aodv_print((const u_char *)(up + 1), length,
528 #ifdef INET6
529 			    ip6 != NULL);
530 #else
531 			    0);
532 #endif
533 			break;
534 		}
535 		return;
536 	}
537 
538 	if (!qflag) {
539 		register struct sunrpc_msg *rp;
540 		enum sunrpc_msg_type direction;
541 
542 		rp = (struct sunrpc_msg *)(up + 1);
543 		if (TTEST(rp->rm_direction)) {
544 			direction = (enum sunrpc_msg_type)EXTRACT_32BITS(&rp->rm_direction);
545 			if (dport == NFS_PORT && direction == SUNRPC_CALL) {
546 				nfsreq_print((u_char *)rp, length,
547 				    (u_char *)ip);
548 				return;
549 			}
550 			if (sport == NFS_PORT && direction == SUNRPC_REPLY) {
551 				nfsreply_print((u_char *)rp, length,
552 				    (u_char *)ip);
553 				return;
554 			}
555 #ifdef notdef
556 			if (dport == SUNRPC_PORT && direction == SUNRPC_CALL) {
557 				sunrpcrequest_print((u_char *)rp, length, (u_char *)ip);
558 				return;
559 			}
560 #endif
561 		}
562 		if (TTEST(((struct LAP *)cp)->type) &&
563 		    ((struct LAP *)cp)->type == lapDDP &&
564 		    (atalk_port(sport) || atalk_port(dport))) {
565 			if (vflag)
566 				fputs("kip ", stdout);
567 			llap_print(cp, length);
568 			return;
569 		}
570 	}
571 	udpipaddr_print(ip, sport, dport);
572 
573 	if (IP_V(ip) == 4 && (vflag > 1) && !fragmented) {
574 		int sum = up->uh_sum;
575 		if (sum == 0) {
576 			(void)printf("[no cksum] ");
577 		} else if (TTEST2(cp[0], length)) {
578 			sum = udp_cksum(ip, up, length + sizeof(struct udphdr));
579 			if (sum != 0)
580 				(void)printf("[bad udp cksum %x!] ", sum);
581 			else
582 				(void)printf("[udp sum ok] ");
583 		}
584 	}
585 #ifdef INET6
586 	if (IP_V(ip) == 6 && ip6->ip6_plen && vflag && !fragmented) {
587 		int sum = up->uh_sum;
588 		/* for IPv6, UDP checksum is mandatory */
589 		if (TTEST2(cp[0], length)) {
590 			sum = udp6_cksum(ip6, up, length + sizeof(struct udphdr));
591 			if (sum != 0)
592 				(void)printf("[bad udp cksum %x!] ", sum);
593 			else
594 				(void)printf("[udp sum ok] ");
595 		}
596 	}
597 #endif
598 
599 	if (!qflag) {
600 #define ISPORT(p) (dport == (p) || sport == (p))
601 		if (ISPORT(NAMESERVER_PORT))
602 			ns_print((const u_char *)(up + 1), length, 0);
603 		else if (ISPORT(MULTICASTDNS_PORT))
604 			ns_print((const u_char *)(up + 1), length, 1);
605 		else if (ISPORT(TIMED_PORT))
606 			timed_print((const u_char *)(up + 1));
607 		else if (ISPORT(TFTP_PORT))
608 			tftp_print((const u_char *)(up + 1), length);
609 		else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))
610 			bootp_print((const u_char *)(up + 1), length);
611 		else if (ISPORT(RIP_PORT))
612 			rip_print((const u_char *)(up + 1), length);
613 		else if (ISPORT(AODV_PORT))
614 			aodv_print((const u_char *)(up + 1), length,
615 #ifdef INET6
616 			    ip6 != NULL);
617 #else
618 			    0);
619 #endif
620 	        else if (ISPORT(ISAKMP_PORT))
621 			 isakmp_print(gndo, (const u_char *)(up + 1), length, bp2);
622   	        else if (ISPORT(ISAKMP_PORT_NATT))
623 			 isakmp_rfc3948_print(gndo, (const u_char *)(up + 1), length, bp2);
624 #if 1 /*???*/
625    	        else if (ISPORT(ISAKMP_PORT_USER1) || ISPORT(ISAKMP_PORT_USER2))
626 			isakmp_print(gndo, (const u_char *)(up + 1), length, bp2);
627 #endif
628 		else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT))
629 			snmp_print((const u_char *)(up + 1), length);
630 		else if (ISPORT(NTP_PORT))
631 			ntp_print((const u_char *)(up + 1), length);
632 		else if (ISPORT(KERBEROS_PORT) || ISPORT(KERBEROS_SEC_PORT))
633 			krb_print((const void *)(up + 1));
634 		else if (ISPORT(L2TP_PORT))
635 			l2tp_print((const u_char *)(up + 1), length);
636 #ifdef TCPDUMP_DO_SMB
637 		else if (ISPORT(NETBIOS_NS_PORT))
638 			nbt_udp137_print((const u_char *)(up + 1), length);
639 		else if (ISPORT(NETBIOS_DGRAM_PORT))
640 			nbt_udp138_print((const u_char *)(up + 1), length);
641 #endif
642 		else if (dport == 3456)
643 			vat_print((const void *)(up + 1), up);
644 		else if (ISPORT(ZEPHYR_SRV_PORT) || ISPORT(ZEPHYR_CLT_PORT))
645 			zephyr_print((const void *)(up + 1), length);
646 		/*
647 		 * Since there are 10 possible ports to check, I think
648 		 * a <> test would be more efficient
649 		 */
650 		else if ((sport >= RX_PORT_LOW && sport <= RX_PORT_HIGH) ||
651 			 (dport >= RX_PORT_LOW && dport <= RX_PORT_HIGH))
652 			rx_print((const void *)(up + 1), length, sport, dport,
653 				 (u_char *) ip);
654 #ifdef INET6
655 		else if (ISPORT(RIPNG_PORT))
656 			ripng_print((const u_char *)(up + 1), length);
657 		else if (ISPORT(DHCP6_SERV_PORT) || ISPORT(DHCP6_CLI_PORT)) {
658 			dhcp6_print((const u_char *)(up + 1), length);
659 		}
660 #endif /*INET6*/
661 		/*
662 		 * Kludge in test for whiteboard packets.
663 		 */
664 		else if (dport == 4567)
665 			wb_print((const void *)(up + 1), length);
666 		else if (ISPORT(CISCO_AUTORP_PORT))
667 			cisco_autorp_print((const void *)(up + 1), length);
668 		else if (ISPORT(RADIUS_PORT) ||
669 			 ISPORT(RADIUS_NEW_PORT) ||
670 			 ISPORT(RADIUS_ACCOUNTING_PORT) ||
671 			 ISPORT(RADIUS_NEW_ACCOUNTING_PORT) )
672 			radius_print((const u_char *)(up+1), length);
673 		else if (dport == HSRP_PORT)
674 			hsrp_print((const u_char *)(up + 1), length);
675 		else if (ISPORT(LWRES_PORT))
676 			lwres_print((const u_char *)(up + 1), length);
677                 else if (ISPORT(LDP_PORT))
678 			ldp_print((const u_char *)(up + 1), length);
679                 else if (ISPORT(OLSR_PORT))
680 			olsr_print((const u_char *)(up + 1), length);
681                 else if (ISPORT(MPLS_LSP_PING_PORT))
682 			lspping_print((const u_char *)(up + 1), length);
683 		else if (dport == BFD_CONTROL_PORT ||
684 			 dport == BFD_ECHO_PORT )
685 			bfd_print((const u_char *)(up+1), length, dport);
686                 else if (ISPORT(LMP_PORT))
687 			lmp_print((const u_char *)(up + 1), length);
688                 else if (ISPORT(SIP_PORT))
689 			sip_print((const u_char *)(up + 1), length);
690                 else if (ISPORT(SYSLOG_PORT))
691 			syslog_print((const u_char *)(up + 1), length);
692 		else
693 			(void)printf("UDP, length %u",
694 			    (u_int32_t)(ulen - sizeof(*up)));
695 #undef ISPORT
696 	} else
697 		(void)printf("UDP, length %u", (u_int32_t)(ulen - sizeof(*up)));
698 }
699 
700 
701 /*
702  * Local Variables:
703  * c-style: whitesmith
704  * c-basic-offset: 8
705  * End:
706  */
707 
708