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Add SIGINFO handler from LBL
[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 1.96 2001-06-26 06:19:06 guy 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 int i, tlen;
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 u_int32_t sum;
304 tlen = ntohs(ip->ip_len) - ((const char *)up-(const char*)ip);
305
306 /* pseudo-header.. */
307 phu.ph.len = htons(tlen);
308 phu.ph.mbz = 0;
309 phu.ph.proto = IPPROTO_UDP;
310 memcpy(&phu.ph.src, &ip->ip_src.s_addr, sizeof(u_int32_t));
311 memcpy(&phu.ph.dst, &ip->ip_dst.s_addr, sizeof(u_int32_t));
312
313 sp = &phu.pa[0];
314 sum = sp[0]+sp[1]+sp[2]+sp[3]+sp[4]+sp[5];
315
316 sp = (const u_int16_t *)up;
317
318 for (i=0; i<(tlen&~1); i+= 2)
319 sum += *sp++;
320
321 if (tlen & 1) {
322 sum += htons( (*(const u_int8_t *)sp) << 8);
323 }
324
325 while (sum > 0xffff)
326 sum = (sum & 0xffff) + (sum >> 16);
327 sum = ~sum & 0xffff;
328
329 return (sum);
330 }
331
332 #ifdef INET6
333 static int udp6_cksum(const struct ip6_hdr *ip6, const struct udphdr *up,
334 int len)
335 {
336 int i, tlen;
337 register const u_int16_t *sp;
338 u_int32_t sum;
339 union {
340 struct {
341 struct in6_addr ph_src;
342 struct in6_addr ph_dst;
343 u_int32_t ph_len;
344 u_int8_t ph_zero[3];
345 u_int8_t ph_nxt;
346 } ph;
347 u_int16_t pa[20];
348 } phu;
349
350 tlen = ntohs(ip6->ip6_plen) + sizeof(struct ip6_hdr) -
351 ((const char *)up - (const char*)ip6);
352
353 /* pseudo-header */
354 memset(&phu, 0, sizeof(phu));
355 phu.ph.ph_src = ip6->ip6_src;
356 phu.ph.ph_dst = ip6->ip6_dst;
357 phu.ph.ph_len = htonl(tlen);
358 phu.ph.ph_nxt = IPPROTO_UDP;
359
360 sum = 0;
361 for (i = 0; i < sizeof(phu.pa) / sizeof(phu.pa[0]); i++)
362 sum += phu.pa[i];
363
364 sp = (const u_int16_t *)up;
365
366 for (i = 0; i < (tlen & ~1); i += 2)
367 sum += *sp++;
368
369 if (tlen & 1)
370 sum += htons((*(const u_int8_t *)sp) << 8);
371
372 while (sum > 0xffff)
373 sum = (sum & 0xffff) + (sum >> 16);
374 sum = ~sum & 0xffff;
375
376 return (sum);
377 }
378 #endif
379
380
381 /* XXX probably should use getservbyname() and cache answers */
382 #define TFTP_PORT 69 /*XXX*/
383 #define KERBEROS_PORT 88 /*XXX*/
384 #define SUNRPC_PORT 111 /*XXX*/
385 #define SNMP_PORT 161 /*XXX*/
386 #define NTP_PORT 123 /*XXX*/
387 #define SNMPTRAP_PORT 162 /*XXX*/
388 #define ISAKMP_PORT 500 /*XXX*/
389 #define TIMED_PORT 525 /*XXX*/
390 #define RIP_PORT 520 /*XXX*/
391 #define KERBEROS_SEC_PORT 750 /*XXX*/
392 #define L2TP_PORT 1701 /*XXX*/
393 #define ISAKMP_PORT_USER1 7500 /*XXX - nonstandard*/
394 #define ISAKMP_PORT_USER2 8500 /*XXX - nonstandard*/
395 #define RX_PORT_LOW 7000 /*XXX*/
396 #define RX_PORT_HIGH 7009 /*XXX*/
397 #define NETBIOS_NS_PORT 137
398 #define NETBIOS_DGRAM_PORT 138
399 #define CISCO_AUTORP_PORT 496 /*XXX*/
400 #define RADIUS_PORT 1645
401 #define RADIUS_NEW_PORT 1812
402 #define RADIUS_ACCOUNTING_PORT 1646
403 #define RADIUS_NEW_ACCOUNTING_PORT 1813
404 #define LWRES_PORT 921
405
406 #ifdef INET6
407 #define RIPNG_PORT 521 /*XXX*/
408 #define DHCP6_SERV_PORT 546 /*XXX*/
409 #define DHCP6_CLI_PORT 547 /*XXX*/
410 #endif
411
412 void
413 udp_print(register const u_char *bp, u_int length,
414 register const u_char *bp2, int fragmented)
415 {
416 register const struct udphdr *up;
417 register const struct ip *ip;
418 register const u_char *cp;
419 register const u_char *ep = bp + length;
420 u_int16_t sport, dport, ulen;
421 #ifdef INET6
422 register const struct ip6_hdr *ip6;
423 #endif
424
425 if (ep > snapend)
426 ep = snapend;
427 up = (struct udphdr *)bp;
428 ip = (struct ip *)bp2;
429 #ifdef INET6
430 if (IP_V(ip) == 6)
431 ip6 = (struct ip6_hdr *)bp2;
432 else
433 ip6 = NULL;
434 #endif /*INET6*/
435 cp = (u_char *)(up + 1);
436 if (cp > snapend) {
437 (void)printf("%s > %s: [|udp]",
438 ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst));
439 return;
440 }
441 if (length < sizeof(struct udphdr)) {
442 (void)printf("%s > %s: truncated-udp %d",
443 ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst),
444 length);
445 return;
446 }
447 length -= sizeof(struct udphdr);
448
449 sport = ntohs(up->uh_sport);
450 dport = ntohs(up->uh_dport);
451 ulen = ntohs(up->uh_ulen);
452 if (ulen < 8) {
453 (void)printf("%s > %s: truncated-udplength %d",
454 ipaddr_string(&ip->ip_src),
455 ipaddr_string(&ip->ip_dst),
456 ulen);
457 return;
458 }
459 if (packettype) {
460 register struct rpc_msg *rp;
461 enum msg_type direction;
462
463 switch (packettype) {
464
465 case PT_VAT:
466 (void)printf("%s.%s > %s.%s:",
467 ipaddr_string(&ip->ip_src),
468 udpport_string(sport),
469 ipaddr_string(&ip->ip_dst),
470 udpport_string(dport));
471 vat_print((void *)(up + 1), length, up);
472 break;
473
474 case PT_WB:
475 (void)printf("%s.%s > %s.%s:",
476 ipaddr_string(&ip->ip_src),
477 udpport_string(sport),
478 ipaddr_string(&ip->ip_dst),
479 udpport_string(dport));
480 wb_print((void *)(up + 1), length);
481 break;
482
483 case PT_RPC:
484 rp = (struct rpc_msg *)(up + 1);
485 direction = (enum msg_type)ntohl(rp->rm_direction);
486 if (direction == CALL)
487 sunrpcrequest_print((u_char *)rp, length,
488 (u_char *)ip);
489 else
490 nfsreply_print((u_char *)rp, length,
491 (u_char *)ip); /*XXX*/
492 break;
493
494 case PT_RTP:
495 (void)printf("%s.%s > %s.%s:",
496 ipaddr_string(&ip->ip_src),
497 udpport_string(sport),
498 ipaddr_string(&ip->ip_dst),
499 udpport_string(dport));
500 rtp_print((void *)(up + 1), length, up);
501 break;
502
503 case PT_RTCP:
504 (void)printf("%s.%s > %s.%s:",
505 ipaddr_string(&ip->ip_src),
506 udpport_string(sport),
507 ipaddr_string(&ip->ip_dst),
508 udpport_string(dport));
509 while (cp < ep)
510 cp = rtcp_print(cp, ep);
511 break;
512
513 case PT_SNMP:
514 (void)printf("%s.%s > %s.%s:",
515 ipaddr_string(&ip->ip_src),
516 udpport_string(sport),
517 ipaddr_string(&ip->ip_dst),
518 udpport_string(dport));
519 snmp_print((const u_char *)(up + 1), length);
520 break;
521
522 case PT_CNFP:
523 (void)printf("%s.%s > %s.%s:",
524 ipaddr_string(&ip->ip_src),
525 udpport_string(sport),
526 ipaddr_string(&ip->ip_dst),
527 udpport_string(dport));
528 cnfp_print(cp, length, (const u_char *)ip);
529 break;
530 }
531 return;
532 }
533
534 if (!qflag) {
535 register struct rpc_msg *rp;
536 enum msg_type direction;
537
538 rp = (struct rpc_msg *)(up + 1);
539 if (TTEST(rp->rm_direction)) {
540 direction = (enum msg_type)ntohl(rp->rm_direction);
541 if (dport == NFS_PORT && direction == CALL) {
542 nfsreq_print((u_char *)rp, length,
543 (u_char *)ip);
544 return;
545 }
546 if (sport == NFS_PORT && direction == REPLY) {
547 nfsreply_print((u_char *)rp, length,
548 (u_char *)ip);
549 return;
550 }
551 #ifdef notdef
552 if (dport == SUNRPC_PORT && direction == CALL) {
553 sunrpcrequest_print((u_char *)rp, length, (u_char *)ip);
554 return;
555 }
556 #endif
557 }
558 if (TTEST(((struct LAP *)cp)->type) &&
559 ((struct LAP *)cp)->type == lapDDP &&
560 (atalk_port(sport) || atalk_port(dport))) {
561 if (vflag)
562 fputs("kip ", stdout);
563 llap_print(cp, length);
564 return;
565 }
566 }
567 #ifdef INET6
568 if (ip6) {
569 if (ip6->ip6_nxt == IPPROTO_UDP) {
570 (void)printf("%s.%s > %s.%s: ",
571 ip6addr_string(&ip6->ip6_src),
572 udpport_string(sport),
573 ip6addr_string(&ip6->ip6_dst),
574 udpport_string(dport));
575 } else {
576 (void)printf("%s > %s: ",
577 udpport_string(sport), udpport_string(dport));
578 }
579 } else
580 #endif /*INET6*/
581 {
582 if (ip->ip_p == IPPROTO_UDP) {
583 (void)printf("%s.%s > %s.%s: ",
584 ipaddr_string(&ip->ip_src),
585 udpport_string(sport),
586 ipaddr_string(&ip->ip_dst),
587 udpport_string(dport));
588 } else {
589 (void)printf("%s > %s: ",
590 udpport_string(sport), udpport_string(dport));
591 }
592 }
593
594 if (IP_V(ip) == 4 && vflag && !fragmented) {
595 int sum = up->uh_sum;
596 if (sum == 0) {
597 (void)printf("[no cksum] ");
598 } else if (TTEST2(cp[0], length)) {
599 sum = udp_cksum(ip, up, length);
600 if (sum != 0)
601 (void)printf("[bad udp cksum %x!] ", sum);
602 else
603 (void)printf("[udp sum ok] ");
604 }
605 }
606 #ifdef INET6
607 if (IP_V(ip) == 6 && ip6->ip6_plen && vflag && !fragmented) {
608 int sum = up->uh_sum;
609 /* for IPv6, UDP checksum is mandatory */
610 if (TTEST2(cp[0], length)) {
611 sum = udp6_cksum(ip6, 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 #endif
619
620 if (!qflag) {
621 #define ISPORT(p) (dport == (p) || sport == (p))
622 if (ISPORT(NAMESERVER_PORT))
623 ns_print((const u_char *)(up + 1), length);
624 else if (ISPORT(TIMED_PORT))
625 timed_print((const u_char *)(up + 1), length);
626 else if (ISPORT(TFTP_PORT))
627 tftp_print((const u_char *)(up + 1), length);
628 else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))
629 bootp_print((const u_char *)(up + 1), length,
630 sport, dport);
631 else if (ISPORT(RIP_PORT))
632 rip_print((const u_char *)(up + 1), length);
633 else if (ISPORT(ISAKMP_PORT))
634 isakmp_print((const u_char *)(up + 1), length, bp2);
635 #if 1 /*???*/
636 else if (ISPORT(ISAKMP_PORT_USER1) || ISPORT(ISAKMP_PORT_USER2))
637 isakmp_print((const u_char *)(up + 1), length, bp2);
638 #endif
639 else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT))
640 snmp_print((const u_char *)(up + 1), length);
641 else if (ISPORT(NTP_PORT))
642 ntp_print((const u_char *)(up + 1), length);
643 else if (ISPORT(KERBEROS_PORT) || ISPORT(KERBEROS_SEC_PORT))
644 krb_print((const void *)(up + 1), length);
645 else if (ISPORT(L2TP_PORT))
646 l2tp_print((const u_char *)(up + 1), length);
647 else if (ISPORT(NETBIOS_NS_PORT))
648 nbt_udp137_print((const u_char *)(up + 1), length);
649 else if (ISPORT(NETBIOS_DGRAM_PORT))
650 nbt_udp138_print((const u_char *)(up + 1), length);
651 else if (dport == 3456)
652 vat_print((const void *)(up + 1), length, up);
653 /*
654 * Since there are 10 possible ports to check, I think
655 * a <> test would be more efficient
656 */
657 else if ((sport >= RX_PORT_LOW && sport <= RX_PORT_HIGH) ||
658 (dport >= RX_PORT_LOW && dport <= RX_PORT_HIGH))
659 rx_print((const void *)(up + 1), length, sport, dport,
660 (u_char *) ip);
661 #ifdef INET6
662 else if (ISPORT(RIPNG_PORT))
663 ripng_print((const u_char *)(up + 1), length);
664 else if (ISPORT(DHCP6_SERV_PORT) || ISPORT(DHCP6_CLI_PORT)) {
665 dhcp6_print((const u_char *)(up + 1), length,
666 sport, dport);
667 }
668 #endif /*INET6*/
669 /*
670 * Kludge in test for whiteboard packets.
671 */
672 else if (dport == 4567)
673 wb_print((const void *)(up + 1), length);
674 else if (ISPORT(CISCO_AUTORP_PORT))
675 cisco_autorp_print((const void *)(up + 1), length);
676 else if (ISPORT(RADIUS_PORT) ||
677 ISPORT(RADIUS_NEW_PORT) ||
678 ISPORT(RADIUS_ACCOUNTING_PORT) ||
679 ISPORT(RADIUS_NEW_ACCOUNTING_PORT) )
680 radius_print((const u_char *)(up+1), length);
681 else if (ISPORT(LWRES_PORT))
682 lwres_print((const u_char *)(up + 1), length);
683 else
684 (void)printf(" udp %u",
685 (u_int32_t)(ulen - sizeof(*up)));
686 #undef ISPORT
687 } else
688 (void)printf(" udp %u", (u_int32_t)(ulen - sizeof(*up)));
689 }
[mirror] the TCPdump network dissector