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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 1.92 2001-02-20 19:03:15 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 #ifdef NOERROR
58 #undef NOERROR /* Solaris sucks */
59 #endif
60 #ifdef T_UNSPEC
61 #undef T_UNSPEC /* SINIX does too */
62 #endif
63 #include "nameser.h"
64 #include "nfs.h"
65 #include "bootp.h"
66
67 struct rtcphdr {
68 u_int16_t rh_flags; /* T:2 P:1 CNT:5 PT:8 */
69 u_int16_t rh_len; /* length of message (in words) */
70 u_int32_t rh_ssrc; /* synchronization src id */
71 };
72
73 typedef struct {
74 u_int32_t upper; /* more significant 32 bits */
75 u_int32_t lower; /* less significant 32 bits */
76 } ntp64;
77
78 /*
79 * Sender report.
80 */
81 struct rtcp_sr {
82 ntp64 sr_ntp; /* 64-bit ntp timestamp */
83 u_int32_t sr_ts; /* reference media timestamp */
84 u_int32_t sr_np; /* no. packets sent */
85 u_int32_t sr_nb; /* no. bytes sent */
86 };
87
88 /*
89 * Receiver report.
90 * Time stamps are middle 32-bits of ntp timestamp.
91 */
92 struct rtcp_rr {
93 u_int32_t rr_srcid; /* sender being reported */
94 u_int32_t rr_nl; /* no. packets lost */
95 u_int32_t rr_ls; /* extended last seq number received */
96 u_int32_t rr_dv; /* jitter (delay variance) */
97 u_int32_t rr_lsr; /* orig. ts from last rr from this src */
98 u_int32_t rr_dlsr; /* time from recpt of last rr to xmit time */
99 };
100
101 /*XXX*/
102 #define RTCP_PT_SR 200
103 #define RTCP_PT_RR 201
104 #define RTCP_PT_SDES 202
105 #define RTCP_SDES_CNAME 1
106 #define RTCP_SDES_NAME 2
107 #define RTCP_SDES_EMAIL 3
108 #define RTCP_SDES_PHONE 4
109 #define RTCP_SDES_LOC 5
110 #define RTCP_SDES_TOOL 6
111 #define RTCP_SDES_NOTE 7
112 #define RTCP_SDES_PRIV 8
113 #define RTCP_PT_BYE 203
114 #define RTCP_PT_APP 204
115
116 static void
117 vat_print(const void *hdr, u_int len, register const struct udphdr *up)
118 {
119 /* vat/vt audio */
120 u_int ts = *(u_int16_t *)hdr;
121 if ((ts & 0xf060) != 0) {
122 /* probably vt */
123 (void)printf(" udp/vt %u %d / %d",
124 (u_int32_t)(ntohs(up->uh_ulen) - sizeof(*up)),
125 ts & 0x3ff, ts >> 10);
126 } else {
127 /* probably vat */
128 u_int32_t i0 = (u_int32_t)ntohl(((u_int *)hdr)[0]);
129 u_int32_t i1 = (u_int32_t)ntohl(((u_int *)hdr)[1]);
130 printf(" udp/vat %u c%d %u%s",
131 (u_int32_t)(ntohs(up->uh_ulen) - sizeof(*up) - 8),
132 i0 & 0xffff,
133 i1, i0 & 0x800000? "*" : "");
134 /* audio format */
135 if (i0 & 0x1f0000)
136 printf(" f%d", (i0 >> 16) & 0x1f);
137 if (i0 & 0x3f000000)
138 printf(" s%d", (i0 >> 24) & 0x3f);
139 }
140 }
141
142 static void
143 rtp_print(const void *hdr, u_int len, register const struct udphdr *up)
144 {
145 /* rtp v1 or v2 */
146 u_int *ip = (u_int *)hdr;
147 u_int hasopt, hasext, contype, hasmarker;
148 u_int32_t i0 = (u_int32_t)ntohl(((u_int *)hdr)[0]);
149 u_int32_t i1 = (u_int32_t)ntohl(((u_int *)hdr)[1]);
150 u_int dlen = ntohs(up->uh_ulen) - sizeof(*up) - 8;
151 const char * ptype;
152
153 ip += 2;
154 len >>= 2;
155 len -= 2;
156 hasopt = 0;
157 hasext = 0;
158 if ((i0 >> 30) == 1) {
159 /* rtp v1 */
160 hasopt = i0 & 0x800000;
161 contype = (i0 >> 16) & 0x3f;
162 hasmarker = i0 & 0x400000;
163 ptype = "rtpv1";
164 } else {
165 /* rtp v2 */
166 hasext = i0 & 0x10000000;
167 contype = (i0 >> 16) & 0x7f;
168 hasmarker = i0 & 0x800000;
169 dlen -= 4;
170 ptype = "rtp";
171 ip += 1;
172 len -= 1;
173 }
174 printf(" udp/%s %d c%d %s%s %d %u",
175 ptype,
176 dlen,
177 contype,
178 (hasopt || hasext)? "+" : "",
179 hasmarker? "*" : "",
180 i0 & 0xffff,
181 i1);
182 if (vflag) {
183 printf(" %u", (u_int32_t)ntohl(((u_int *)hdr)[2]));
184 if (hasopt) {
185 u_int i2, optlen;
186 do {
187 i2 = ip[0];
188 optlen = (i2 >> 16) & 0xff;
189 if (optlen == 0 || optlen > len) {
190 printf(" !opt");
191 return;
192 }
193 ip += optlen;
194 len -= optlen;
195 } while ((int)i2 >= 0);
196 }
197 if (hasext) {
198 u_int i2, extlen;
199 i2 = ip[0];
200 extlen = (i2 & 0xffff) + 1;
201 if (extlen > len) {
202 printf(" !ext");
203 return;
204 }
205 ip += extlen;
206 }
207 if (contype == 0x1f) /*XXX H.261 */
208 printf(" 0x%04x", ip[0] >> 16);
209 }
210 }
211
212 static const u_char *
213 rtcp_print(const u_char *hdr, const u_char *ep)
214 {
215 /* rtp v2 control (rtcp) */
216 struct rtcp_rr *rr = 0;
217 struct rtcp_sr *sr;
218 struct rtcphdr *rh = (struct rtcphdr *)hdr;
219 u_int len;
220 u_int16_t flags;
221 int cnt;
222 double ts, dts;
223 if ((u_char *)(rh + 1) > ep) {
224 printf(" [|rtcp]");
225 return (ep);
226 }
227 len = (ntohs(rh->rh_len) + 1) * 4;
228 flags = ntohs(rh->rh_flags);
229 cnt = (flags >> 8) & 0x1f;
230 switch (flags & 0xff) {
231 case RTCP_PT_SR:
232 sr = (struct rtcp_sr *)(rh + 1);
233 printf(" sr");
234 if (len != cnt * sizeof(*rr) + sizeof(*sr) + sizeof(*rh))
235 printf(" [%d]", len);
236 if (vflag)
237 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
238 if ((u_char *)(sr + 1) > ep) {
239 printf(" [|rtcp]");
240 return (ep);
241 }
242 ts = (double)((u_int32_t)ntohl(sr->sr_ntp.upper)) +
243 ((double)((u_int32_t)ntohl(sr->sr_ntp.lower)) /
244 4294967296.0);
245 printf(" @%.2f %u %up %ub", ts, (u_int32_t)ntohl(sr->sr_ts),
246 (u_int32_t)ntohl(sr->sr_np), (u_int32_t)ntohl(sr->sr_nb));
247 rr = (struct rtcp_rr *)(sr + 1);
248 break;
249 case RTCP_PT_RR:
250 printf(" rr");
251 if (len != cnt * sizeof(*rr) + sizeof(*rh))
252 printf(" [%d]", len);
253 rr = (struct rtcp_rr *)(rh + 1);
254 if (vflag)
255 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
256 break;
257 case RTCP_PT_SDES:
258 printf(" sdes %d", len);
259 if (vflag)
260 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
261 cnt = 0;
262 break;
263 case RTCP_PT_BYE:
264 printf(" bye %d", len);
265 if (vflag)
266 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
267 cnt = 0;
268 break;
269 default:
270 printf(" type-0x%x %d", flags & 0xff, len);
271 cnt = 0;
272 break;
273 }
274 if (cnt > 1)
275 printf(" c%d", cnt);
276 while (--cnt >= 0) {
277 if ((u_char *)(rr + 1) > ep) {
278 printf(" [|rtcp]");
279 return (ep);
280 }
281 if (vflag)
282 printf(" %u", (u_int32_t)ntohl(rr->rr_srcid));
283 ts = (double)((u_int32_t)ntohl(rr->rr_lsr)) / 65536.;
284 dts = (double)((u_int32_t)ntohl(rr->rr_dlsr)) / 65536.;
285 printf(" %ul %us %uj @%.2f+%.2f",
286 (u_int32_t)ntohl(rr->rr_nl) & 0x00ffffff,
287 (u_int32_t)ntohl(rr->rr_ls),
288 (u_int32_t)ntohl(rr->rr_dv), ts, dts);
289 }
290 return (hdr + len);
291 }
292
293 static int udp_cksum(register const struct ip *ip,
294 register const struct udphdr *up,
295 register int len)
296 {
297 int i, tlen;
298 union phu {
299 struct phdr {
300 u_int32_t src;
301 u_int32_t dst;
302 u_char mbz;
303 u_char proto;
304 u_int16_t len;
305 } ph;
306 u_int16_t pa[6];
307 } phu;
308 register const u_int16_t *sp;
309 u_int32_t sum;
310 tlen = ntohs(ip->ip_len) - ((const char *)up-(const char*)ip);
311
312 /* pseudo-header.. */
313 phu.ph.len = htons(tlen);
314 phu.ph.mbz = 0;
315 phu.ph.proto = IPPROTO_UDP;
316 memcpy(&phu.ph.src, &ip->ip_src.s_addr, sizeof(u_int32_t));
317 memcpy(&phu.ph.dst, &ip->ip_dst.s_addr, sizeof(u_int32_t));
318
319 sp = &phu.pa[0];
320 sum = sp[0]+sp[1]+sp[2]+sp[3]+sp[4]+sp[5];
321
322 sp = (const u_int16_t *)up;
323
324 for (i=0; i<(tlen&~1); i+= 2)
325 sum += *sp++;
326
327 if (tlen & 1) {
328 sum += htons( (*(const u_int8_t *)sp) << 8);
329 }
330
331 while (sum > 0xffff)
332 sum = (sum & 0xffff) + (sum >> 16);
333 sum = ~sum & 0xffff;
334
335 return (sum);
336 }
337
338 #ifdef INET6
339 static int udp6_cksum(const struct ip6_hdr *ip6, const struct udphdr *up,
340 int len)
341 {
342 int i, tlen;
343 register const u_int16_t *sp;
344 u_int32_t sum;
345 union {
346 struct {
347 struct in6_addr ph_src;
348 struct in6_addr ph_dst;
349 u_int32_t ph_len;
350 u_int8_t ph_zero[3];
351 u_int8_t ph_nxt;
352 } ph;
353 u_int16_t pa[20];
354 } phu;
355
356 tlen = ntohs(ip6->ip6_plen) + sizeof(struct ip6_hdr) -
357 ((const char *)up - (const char*)ip6);
358
359 /* pseudo-header */
360 memset(&phu, 0, sizeof(phu));
361 phu.ph.ph_src = ip6->ip6_src;
362 phu.ph.ph_dst = ip6->ip6_dst;
363 phu.ph.ph_len = htonl(tlen);
364 phu.ph.ph_nxt = IPPROTO_UDP;
365
366 sum = 0;
367 for (i = 0; i < sizeof(phu.pa) / sizeof(phu.pa[0]); i++)
368 sum += phu.pa[i];
369
370 sp = (const u_int16_t *)up;
371
372 for (i = 0; i < (tlen & ~1); i += 2)
373 sum += *sp++;
374
375 if (tlen & 1)
376 sum += htons((*(const u_int8_t *)sp) << 8);
377
378 while (sum > 0xffff)
379 sum = (sum & 0xffff) + (sum >> 16);
380 sum = ~sum & 0xffff;
381
382 return (sum);
383 }
384 #endif
385
386
387 /* XXX probably should use getservbyname() and cache answers */
388 #define TFTP_PORT 69 /*XXX*/
389 #define KERBEROS_PORT 88 /*XXX*/
390 #define SUNRPC_PORT 111 /*XXX*/
391 #define SNMP_PORT 161 /*XXX*/
392 #define NTP_PORT 123 /*XXX*/
393 #define SNMPTRAP_PORT 162 /*XXX*/
394 #define ISAKMP_PORT 500 /*XXX*/
395 #define TIMED_PORT 525 /*XXX*/
396 #define RIP_PORT 520 /*XXX*/
397 #define KERBEROS_SEC_PORT 750 /*XXX*/
398 #define L2TP_PORT 1701 /*XXX*/
399 #define ISAKMP_PORT_USER1 7500 /*??? - nonstandard*/
400 #define ISAKMP_PORT_USER2 8500 /*??? - nonstandard*/
401 #define RX_PORT_LOW 7000 /*XXX*/
402 #define RX_PORT_HIGH 7009 /*XXX*/
403 #define NETBIOS_NS_PORT 137
404 #define NETBIOS_DGRAM_PORT 138
405 #define CISCO_AUTORP_PORT 496 /*XXX*/
406 #define RADIUS_PORT 1645
407 #define RADIUS_NEW_PORT 1812
408 #define RADIUS_ACCOUNTING_PORT 1646
409 #define RADIUS_NEW_ACCOUNTING_PORT 1813
410 #define LWRES_PORT 921
411
412 #ifdef INET6
413 #define RIPNG_PORT 521 /*XXX*/
414 #define DHCP6_SERV_PORT 546 /*XXX*/
415 #define DHCP6_CLI_PORT 547 /*XXX*/
416 #endif
417
418 void
419 udp_print(register const u_char *bp, u_int length,
420 register const u_char *bp2, int fragmented)
421 {
422 register const struct udphdr *up;
423 register const struct ip *ip;
424 register const u_char *cp;
425 register const u_char *ep = bp + length;
426 u_int16_t sport, dport, ulen;
427 #ifdef INET6
428 register const struct ip6_hdr *ip6;
429 #endif
430
431 if (ep > snapend)
432 ep = snapend;
433 up = (struct udphdr *)bp;
434 ip = (struct ip *)bp2;
435 #ifdef INET6
436 if (IP_V(ip) == 6)
437 ip6 = (struct ip6_hdr *)bp2;
438 else
439 ip6 = NULL;
440 #endif /*INET6*/
441 cp = (u_char *)(up + 1);
442 if (cp > snapend) {
443 (void)printf("%s > %s: [|udp]",
444 ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst));
445 return;
446 }
447 if (length < sizeof(struct udphdr)) {
448 (void)printf("%s > %s: truncated-udp %d",
449 ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst),
450 length);
451 return;
452 }
453 length -= sizeof(struct udphdr);
454
455 sport = ntohs(up->uh_sport);
456 dport = ntohs(up->uh_dport);
457 ulen = ntohs(up->uh_ulen);
458 if (ulen < 8) {
459 (void)printf("%s > %s: truncated-udplength %d",
460 ipaddr_string(&ip->ip_src),
461 ipaddr_string(&ip->ip_dst),
462 ulen);
463 return;
464 }
465 if (packettype) {
466 register struct rpc_msg *rp;
467 enum msg_type direction;
468
469 switch (packettype) {
470
471 case PT_VAT:
472 (void)printf("%s.%s > %s.%s:",
473 ipaddr_string(&ip->ip_src),
474 udpport_string(sport),
475 ipaddr_string(&ip->ip_dst),
476 udpport_string(dport));
477 vat_print((void *)(up + 1), length, up);
478 break;
479
480 case PT_WB:
481 (void)printf("%s.%s > %s.%s:",
482 ipaddr_string(&ip->ip_src),
483 udpport_string(sport),
484 ipaddr_string(&ip->ip_dst),
485 udpport_string(dport));
486 wb_print((void *)(up + 1), length);
487 break;
488
489 case PT_RPC:
490 rp = (struct rpc_msg *)(up + 1);
491 direction = (enum msg_type)ntohl(rp->rm_direction);
492 if (direction == CALL)
493 sunrpcrequest_print((u_char *)rp, length,
494 (u_char *)ip);
495 else
496 nfsreply_print((u_char *)rp, length,
497 (u_char *)ip); /*XXX*/
498 break;
499
500 case PT_RTP:
501 (void)printf("%s.%s > %s.%s:",
502 ipaddr_string(&ip->ip_src),
503 udpport_string(sport),
504 ipaddr_string(&ip->ip_dst),
505 udpport_string(dport));
506 rtp_print((void *)(up + 1), length, up);
507 break;
508
509 case PT_RTCP:
510 (void)printf("%s.%s > %s.%s:",
511 ipaddr_string(&ip->ip_src),
512 udpport_string(sport),
513 ipaddr_string(&ip->ip_dst),
514 udpport_string(dport));
515 while (cp < ep)
516 cp = rtcp_print(cp, ep);
517 break;
518
519 case PT_SNMP:
520 (void)printf("%s.%s > %s.%s:",
521 ipaddr_string(&ip->ip_src),
522 udpport_string(sport),
523 ipaddr_string(&ip->ip_dst),
524 udpport_string(dport));
525 snmp_print((const u_char *)(up + 1), length);
526 break;
527
528 case PT_CNFP:
529 (void)printf("%s.%s > %s.%s:",
530 ipaddr_string(&ip->ip_src),
531 udpport_string(sport),
532 ipaddr_string(&ip->ip_dst),
533 udpport_string(dport));
534 cnfp_print(cp, length, (const u_char *)ip);
535 break;
536 }
537 return;
538 }
539
540 if (!qflag) {
541 register struct rpc_msg *rp;
542 enum msg_type direction;
543
544 rp = (struct rpc_msg *)(up + 1);
545 if (TTEST(rp->rm_direction)) {
546 direction = (enum msg_type)ntohl(rp->rm_direction);
547 if (dport == NFS_PORT && direction == CALL) {
548 nfsreq_print((u_char *)rp, length,
549 (u_char *)ip);
550 return;
551 }
552 if (sport == NFS_PORT && direction == REPLY) {
553 nfsreply_print((u_char *)rp, length,
554 (u_char *)ip);
555 return;
556 }
557 #ifdef notdef
558 if (dport == SUNRPC_PORT && direction == CALL) {
559 sunrpcrequest_print((u_char *)rp, length, (u_char *)ip);
560 return;
561 }
562 #endif
563 }
564 if (TTEST(((struct LAP *)cp)->type) &&
565 ((struct LAP *)cp)->type == lapDDP &&
566 (atalk_port(sport) || atalk_port(dport))) {
567 if (vflag)
568 fputs("kip ", stdout);
569 llap_print(cp, length);
570 return;
571 }
572 }
573 #if 0
574 (void)printf("%s.%s > %s.%s:",
575 ipaddr_string(&ip->ip_src), udpport_string(sport),
576 ipaddr_string(&ip->ip_dst), udpport_string(dport));
577 #else
578 #ifdef INET6
579 if (ip6) {
580 if (ip6->ip6_nxt == IPPROTO_UDP) {
581 (void)printf("%s.%s > %s.%s: ",
582 ip6addr_string(&ip6->ip6_src),
583 udpport_string(sport),
584 ip6addr_string(&ip6->ip6_dst),
585 udpport_string(dport));
586 } else {
587 (void)printf("%s > %s: ",
588 udpport_string(sport), udpport_string(dport));
589 }
590 } else
591 #endif /*INET6*/
592 {
593 if (ip->ip_p == IPPROTO_UDP) {
594 (void)printf("%s.%s > %s.%s: ",
595 ipaddr_string(&ip->ip_src),
596 udpport_string(sport),
597 ipaddr_string(&ip->ip_dst),
598 udpport_string(dport));
599 } else {
600 (void)printf("%s > %s: ",
601 udpport_string(sport), udpport_string(dport));
602 }
603 }
604 #endif
605
606 if (IP_V(ip) == 4 && vflag && !fragmented) {
607 int sum = up->uh_sum;
608 if (sum == 0) {
609 (void)printf("[no cksum] ");
610 } else if (TTEST2(cp[0], length)) {
611 sum = udp_cksum(ip, up, length);
612 if (sum != 0)
613 (void)printf("[bad udp cksum %x!] ", sum);
614 else
615 (void)printf("[udp sum ok] ");
616 }
617 }
618 #ifdef INET6
619 if (IP_V(ip) == 6 && ip6->ip6_plen && vflag && !fragmented) {
620 int sum = up->uh_sum;
621 /* for IPv6, UDP checksum is mandatory */
622 if (TTEST2(cp[0], length)) {
623 sum = udp6_cksum(ip6, up, length);
624 if (sum != 0)
625 (void)printf("[bad udp cksum %x!] ", sum);
626 else
627 (void)printf("[udp sum ok] ");
628 }
629 }
630 #endif
631
632 if (!qflag) {
633 #define ISPORT(p) (dport == (p) || sport == (p))
634 if (ISPORT(NAMESERVER_PORT))
635 ns_print((const u_char *)(up + 1), length);
636 else if (ISPORT(TIMED_PORT))
637 timed_print((const u_char *)(up + 1), length);
638 else if (ISPORT(TFTP_PORT))
639 tftp_print((const u_char *)(up + 1), length);
640 else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))
641 bootp_print((const u_char *)(up + 1), length,
642 sport, dport);
643 else if (ISPORT(RIP_PORT))
644 rip_print((const u_char *)(up + 1), length);
645 else if (ISPORT(ISAKMP_PORT))
646 isakmp_print((const u_char *)(up + 1), length, bp2);
647 #if 1 /*???*/
648 else if (ISPORT(ISAKMP_PORT_USER1) || ISPORT(ISAKMP_PORT_USER2))
649 isakmp_print((const u_char *)(up + 1), length, bp2);
650 #endif
651 else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT))
652 snmp_print((const u_char *)(up + 1), length);
653 else if (ISPORT(NTP_PORT))
654 ntp_print((const u_char *)(up + 1), length);
655 else if (ISPORT(KERBEROS_PORT) || ISPORT(KERBEROS_SEC_PORT))
656 krb_print((const void *)(up + 1), length);
657 else if (ISPORT(L2TP_PORT))
658 l2tp_print((const u_char *)(up + 1), length);
659 else if (ISPORT(NETBIOS_NS_PORT)) {
660 nbt_udp137_print((const u_char *)(up + 1), length);
661 }
662 else if (ISPORT(NETBIOS_DGRAM_PORT)) {
663 nbt_udp138_print((const u_char *)(up + 1), length);
664 }
665 else if (dport == 3456)
666 vat_print((const void *)(up + 1), length, up);
667 /*
668 * Since there are 10 possible ports to check, I think
669 * a <> test would be more efficient
670 */
671 else if ((sport >= RX_PORT_LOW && sport <= RX_PORT_HIGH) ||
672 (dport >= RX_PORT_LOW && dport <= RX_PORT_HIGH))
673 rx_print((const void *)(up + 1), length, sport, dport,
674 (u_char *) ip);
675 #ifdef INET6
676 else if (ISPORT(RIPNG_PORT))
677 ripng_print((const u_char *)(up + 1), length);
678 else if (ISPORT(DHCP6_SERV_PORT) || ISPORT(DHCP6_CLI_PORT)) {
679 dhcp6_print((const u_char *)(up + 1), length,
680 sport, dport);
681 }
682 #endif /*INET6*/
683 /*
684 * Kludge in test for whiteboard packets.
685 */
686 else if (dport == 4567)
687 wb_print((const void *)(up + 1), length);
688 else if (ISPORT(CISCO_AUTORP_PORT))
689 cisco_autorp_print((const void *)(up + 1), length);
690 else if (ISPORT(RADIUS_PORT) ||
691 ISPORT(RADIUS_NEW_PORT) ||
692 ISPORT(RADIUS_ACCOUNTING_PORT) ||
693 ISPORT(RADIUS_NEW_ACCOUNTING_PORT) )
694 radius_print((const u_char *)(up+1), length);
695 else if (ISPORT(LWRES_PORT))
696 lwres_print((const u_char *)(up + 1), length);
697 else
698 (void)printf(" udp %u",
699 (u_int32_t)(ulen - sizeof(*up)));
700 #undef ISPORT
701 } else
702 (void)printf(" udp %u", (u_int32_t)(ulen - sizeof(*up)));
703 }
[mirror] the TCPdump network dissector