2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
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
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.
23 static const char rcsid
[] _U_
=
24 "@(#) $Header: /tcpdump/master/tcpdump/print-udp.c,v 1.142 2007-08-08 17:20:58 hannes Exp $ (LBL)";
31 #include <tcpdump-stdinc.h>
40 #include "interface.h"
41 #include "addrtoname.h"
43 #include "appletalk.h"
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 */
66 u_int32_t upper
; /* more significant 32 bits */
67 u_int32_t lower
; /* less significant 32 bits */
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 */
82 * Time stamps are middle 32-bits of ntp timestamp.
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 */
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
109 vat_print(const void *hdr
, register const struct udphdr
*up
)
112 u_int ts
= *(u_int16_t
*)hdr
;
113 if ((ts
& 0xf060) != 0) {
115 (void)printf("udp/vt %u %d / %d",
116 (u_int32_t
)(EXTRACT_16BITS(&up
->uh_ulen
) - sizeof(*up
)),
117 ts
& 0x3ff, ts
>> 10);
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),
125 i1
, i0
& 0x800000? "*" : "");
128 printf(" f%d", (i0
>> 16) & 0x1f);
130 printf(" s%d", (i0
>> 24) & 0x3f);
135 rtp_print(const void *hdr
, u_int len
, register const struct udphdr
*up
)
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;
150 if ((i0
>> 30) == 1) {
152 hasopt
= i0
& 0x800000;
153 contype
= (i0
>> 16) & 0x3f;
154 hasmarker
= i0
& 0x400000;
158 hasext
= i0
& 0x10000000;
159 contype
= (i0
>> 16) & 0x7f;
160 hasmarker
= i0
& 0x800000;
166 printf("udp/%s %d c%d %s%s %d %u",
170 (hasopt
|| hasext
)? "+" : "",
175 printf(" %u", EXTRACT_32BITS(&((u_int
*)hdr
)[2]));
180 optlen
= (i2
>> 16) & 0xff;
181 if (optlen
== 0 || optlen
> len
) {
187 } while ((int)i2
>= 0);
192 extlen
= (i2
& 0xffff) + 1;
199 if (contype
== 0x1f) /*XXX H.261 */
200 printf(" 0x%04x", ip
[0] >> 16);
204 static const u_char
*
205 rtcp_print(const u_char
*hdr
, const u_char
*ep
)
207 /* rtp v2 control (rtcp) */
208 struct rtcp_rr
*rr
= 0;
210 struct rtcphdr
*rh
= (struct rtcphdr
*)hdr
;
215 if ((u_char
*)(rh
+ 1) > ep
) {
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) {
224 sr
= (struct rtcp_sr
*)(rh
+ 1);
226 if (len
!= cnt
* sizeof(*rr
) + sizeof(*sr
) + sizeof(*rh
))
227 printf(" [%d]", len
);
229 printf(" %u", EXTRACT_32BITS(&rh
->rh_ssrc
));
230 if ((u_char
*)(sr
+ 1) > ep
) {
234 ts
= (double)(EXTRACT_32BITS(&sr
->sr_ntp
.upper
)) +
235 ((double)(EXTRACT_32BITS(&sr
->sr_ntp
.lower
)) /
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);
243 if (len
!= cnt
* sizeof(*rr
) + sizeof(*rh
))
244 printf(" [%d]", len
);
245 rr
= (struct rtcp_rr
*)(rh
+ 1);
247 printf(" %u", EXTRACT_32BITS(&rh
->rh_ssrc
));
250 printf(" sdes %d", len
);
252 printf(" %u", EXTRACT_32BITS(&rh
->rh_ssrc
));
256 printf(" bye %d", len
);
258 printf(" %u", EXTRACT_32BITS(&rh
->rh_ssrc
));
262 printf(" type-0x%x %d", flags
& 0xff, len
);
269 if ((u_char
*)(rr
+ 1) > ep
) {
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
);
285 static int udp_cksum(register const struct ip
*ip
,
286 register const struct udphdr
*up
,
289 return (nextproto4_cksum(ip
, (const u_int8_t
*)(void *)up
, len
,
294 static int udp6_cksum(const struct ip6_hdr
*ip6
, const struct udphdr
*up
,
297 return (nextproto6_cksum(ip6
, (const u_int8_t
*)(void *)up
, len
,
303 udpipaddr_print(const struct ip
*ip
, int sport
, int dport
)
306 const struct ip6_hdr
*ip6
;
309 ip6
= (const struct ip6_hdr
*)ip
;
314 if (ip6
->ip6_nxt
== IPPROTO_UDP
) {
316 (void)printf("%s > %s: ",
317 ip6addr_string(&ip6
->ip6_src
),
318 ip6addr_string(&ip6
->ip6_dst
));
320 (void)printf("%s.%s > %s.%s: ",
321 ip6addr_string(&ip6
->ip6_src
),
322 udpport_string(sport
),
323 ip6addr_string(&ip6
->ip6_dst
),
324 udpport_string(dport
));
328 (void)printf("%s > %s: ",
329 udpport_string(sport
),
330 udpport_string(dport
));
336 if (ip
->ip_p
== IPPROTO_UDP
) {
338 (void)printf("%s > %s: ",
339 ipaddr_string(&ip
->ip_src
),
340 ipaddr_string(&ip
->ip_dst
));
342 (void)printf("%s.%s > %s.%s: ",
343 ipaddr_string(&ip
->ip_src
),
344 udpport_string(sport
),
345 ipaddr_string(&ip
->ip_dst
),
346 udpport_string(dport
));
350 (void)printf("%s > %s: ",
351 udpport_string(sport
),
352 udpport_string(dport
));
359 udp_print(register const u_char
*bp
, u_int length
,
360 register const u_char
*bp2
, int fragmented
)
362 register const struct udphdr
*up
;
363 register const struct ip
*ip
;
364 register const u_char
*cp
;
365 register const u_char
*ep
= bp
+ length
;
366 u_int16_t sport
, dport
, ulen
;
368 register const struct ip6_hdr
*ip6
;
373 up
= (struct udphdr
*)bp
;
374 ip
= (struct ip
*)bp2
;
377 ip6
= (struct ip6_hdr
*)bp2
;
381 cp
= (u_char
*)(up
+ 1);
382 if (!TTEST(up
->uh_dport
)) {
383 udpipaddr_print(ip
, -1, -1);
384 (void)printf("[|udp]");
388 sport
= EXTRACT_16BITS(&up
->uh_sport
);
389 dport
= EXTRACT_16BITS(&up
->uh_dport
);
391 if (length
< sizeof(struct udphdr
)) {
392 udpipaddr_print(ip
, sport
, dport
);
393 (void)printf("truncated-udp %d", length
);
396 length
-= sizeof(struct udphdr
);
399 udpipaddr_print(ip
, sport
, dport
);
400 (void)printf("[|udp]");
404 ulen
= EXTRACT_16BITS(&up
->uh_ulen
);
406 udpipaddr_print(ip
, sport
, dport
);
407 (void)printf("truncated-udplength %d", ulen
);
411 register struct sunrpc_msg
*rp
;
412 enum sunrpc_msg_type direction
;
414 switch (packettype
) {
417 udpipaddr_print(ip
, sport
, dport
);
418 vat_print((void *)(up
+ 1), up
);
422 udpipaddr_print(ip
, sport
, dport
);
423 wb_print((void *)(up
+ 1), length
);
427 rp
= (struct sunrpc_msg
*)(up
+ 1);
428 direction
= (enum sunrpc_msg_type
)EXTRACT_32BITS(&rp
->rm_direction
);
429 if (direction
== SUNRPC_CALL
)
430 sunrpcrequest_print((u_char
*)rp
, length
,
433 nfsreply_print((u_char
*)rp
, length
,
434 (u_char
*)ip
); /*XXX*/
438 udpipaddr_print(ip
, sport
, dport
);
439 rtp_print((void *)(up
+ 1), length
, up
);
443 udpipaddr_print(ip
, sport
, dport
);
445 cp
= rtcp_print(cp
, ep
);
449 udpipaddr_print(ip
, sport
, dport
);
450 snmp_print((const u_char
*)(up
+ 1), length
);
454 udpipaddr_print(ip
, sport
, dport
);
455 cnfp_print(cp
, (const u_char
*)ip
);
459 udpipaddr_print(ip
, sport
, dport
);
460 tftp_print(cp
, length
);
464 udpipaddr_print(ip
, sport
, dport
);
465 aodv_print((const u_char
*)(up
+ 1), length
,
474 udpipaddr_print(ip
, sport
, dport
);
475 radius_print(cp
, length
);
482 register struct sunrpc_msg
*rp
;
483 enum sunrpc_msg_type direction
;
485 rp
= (struct sunrpc_msg
*)(up
+ 1);
486 if (TTEST(rp
->rm_direction
)) {
487 direction
= (enum sunrpc_msg_type
)EXTRACT_32BITS(&rp
->rm_direction
);
488 if (dport
== NFS_PORT
&& direction
== SUNRPC_CALL
) {
489 nfsreq_print((u_char
*)rp
, length
,
493 if (sport
== NFS_PORT
&& direction
== SUNRPC_REPLY
) {
494 nfsreply_print((u_char
*)rp
, length
,
499 if (dport
== SUNRPC_PORT
&& direction
== SUNRPC_CALL
) {
500 sunrpcrequest_print((u_char
*)rp
, length
, (u_char
*)ip
);
505 if (TTEST(((struct LAP
*)cp
)->type
) &&
506 ((struct LAP
*)cp
)->type
== lapDDP
&&
507 (atalk_port(sport
) || atalk_port(dport
))) {
509 fputs("kip ", stdout
);
510 llap_print(cp
, length
);
514 udpipaddr_print(ip
, sport
, dport
);
516 if (vflag
&& !Kflag
&& !fragmented
) {
517 /* Check the checksum, if possible. */
518 u_int16_t sum
, udp_sum
;
521 * XXX - do this even if vflag == 1?
522 * TCP does, and we do so for UDP-over-IPv6.
524 if (IP_V(ip
) == 4 && (vflag
> 1)) {
525 udp_sum
= EXTRACT_16BITS(&up
->uh_sum
);
527 (void)printf("[no cksum] ");
528 } else if (TTEST2(cp
[0], length
)) {
529 sum
= udp_cksum(ip
, up
, length
+ sizeof(struct udphdr
));
532 (void)printf("[bad udp cksum 0x%04x -> 0x%04x!] ",
534 in_cksum_shouldbe(udp_sum
, sum
));
536 (void)printf("[udp sum ok] ");
540 else if (IP_V(ip
) == 6 && ip6
->ip6_plen
) {
541 /* for IPv6, UDP checksum is mandatory */
542 if (TTEST2(cp
[0], length
)) {
543 sum
= udp6_cksum(ip6
, up
, length
+ sizeof(struct udphdr
));
544 udp_sum
= EXTRACT_16BITS(&up
->uh_sum
);
547 (void)printf("[bad udp cksum 0x%04x -> 0x%04x!] ",
549 in_cksum_shouldbe(udp_sum
, sum
));
551 (void)printf("[udp sum ok] ");
558 #define ISPORT(p) (dport == (p) || sport == (p))
559 if (ISPORT(NAMESERVER_PORT
))
560 ns_print((const u_char
*)(up
+ 1), length
, 0);
561 else if (ISPORT(MULTICASTDNS_PORT
))
562 ns_print((const u_char
*)(up
+ 1), length
, 1);
563 else if (ISPORT(TIMED_PORT
))
564 timed_print((const u_char
*)(up
+ 1));
565 else if (ISPORT(TFTP_PORT
))
566 tftp_print((const u_char
*)(up
+ 1), length
);
567 else if (ISPORT(IPPORT_BOOTPC
) || ISPORT(IPPORT_BOOTPS
))
568 bootp_print((const u_char
*)(up
+ 1), length
);
569 else if (ISPORT(RIP_PORT
))
570 rip_print((const u_char
*)(up
+ 1), length
);
571 else if (ISPORT(AODV_PORT
))
572 aodv_print((const u_char
*)(up
+ 1), length
,
578 else if (ISPORT(ISAKMP_PORT
))
579 isakmp_print(gndo
, (const u_char
*)(up
+ 1), length
, bp2
);
580 else if (ISPORT(ISAKMP_PORT_NATT
))
581 isakmp_rfc3948_print(gndo
, (const u_char
*)(up
+ 1), length
, bp2
);
583 else if (ISPORT(ISAKMP_PORT_USER1
) || ISPORT(ISAKMP_PORT_USER2
))
584 isakmp_print(gndo
, (const u_char
*)(up
+ 1), length
, bp2
);
586 else if (ISPORT(SNMP_PORT
) || ISPORT(SNMPTRAP_PORT
))
587 snmp_print((const u_char
*)(up
+ 1), length
);
588 else if (ISPORT(NTP_PORT
))
589 ntp_print((const u_char
*)(up
+ 1), length
);
590 else if (ISPORT(KERBEROS_PORT
) || ISPORT(KERBEROS_SEC_PORT
))
591 krb_print((const void *)(up
+ 1));
592 else if (ISPORT(L2TP_PORT
))
593 l2tp_print((const u_char
*)(up
+ 1), length
);
594 #ifdef TCPDUMP_DO_SMB
595 else if (ISPORT(NETBIOS_NS_PORT
))
596 nbt_udp137_print((const u_char
*)(up
+ 1), length
);
597 else if (ISPORT(NETBIOS_DGRAM_PORT
))
598 nbt_udp138_print((const u_char
*)(up
+ 1), length
);
600 else if (dport
== 3456)
601 vat_print((const void *)(up
+ 1), up
);
602 else if (ISPORT(ZEPHYR_SRV_PORT
) || ISPORT(ZEPHYR_CLT_PORT
))
603 zephyr_print((const void *)(up
+ 1), length
);
605 * Since there are 10 possible ports to check, I think
606 * a <> test would be more efficient
608 else if ((sport
>= RX_PORT_LOW
&& sport
<= RX_PORT_HIGH
) ||
609 (dport
>= RX_PORT_LOW
&& dport
<= RX_PORT_HIGH
))
610 rx_print((const void *)(up
+ 1), length
, sport
, dport
,
613 else if (ISPORT(RIPNG_PORT
))
614 ripng_print((const u_char
*)(up
+ 1), length
);
615 else if (ISPORT(DHCP6_SERV_PORT
) || ISPORT(DHCP6_CLI_PORT
))
616 dhcp6_print((const u_char
*)(up
+ 1), length
);
617 else if (ISPORT(BABEL_PORT
) || ISPORT(BABEL_PORT_OLD
))
618 babel_print((const u_char
*)(up
+ 1), length
);
621 * Kludge in test for whiteboard packets.
623 else if (dport
== 4567)
624 wb_print((const void *)(up
+ 1), length
);
625 else if (ISPORT(CISCO_AUTORP_PORT
))
626 cisco_autorp_print((const void *)(up
+ 1), length
);
627 else if (ISPORT(RADIUS_PORT
) ||
628 ISPORT(RADIUS_NEW_PORT
) ||
629 ISPORT(RADIUS_ACCOUNTING_PORT
) ||
630 ISPORT(RADIUS_NEW_ACCOUNTING_PORT
) )
631 radius_print((const u_char
*)(up
+1), length
);
632 else if (dport
== HSRP_PORT
)
633 hsrp_print((const u_char
*)(up
+ 1), length
);
634 else if (ISPORT(LWRES_PORT
))
635 lwres_print((const u_char
*)(up
+ 1), length
);
636 else if (ISPORT(LDP_PORT
))
637 ldp_print((const u_char
*)(up
+ 1), length
);
638 else if (ISPORT(OLSR_PORT
))
639 olsr_print((const u_char
*)(up
+ 1), length
,
641 (IP_V(ip
) == 6) ? 1 : 0);
645 else if (ISPORT(MPLS_LSP_PING_PORT
))
646 lspping_print((const u_char
*)(up
+ 1), length
);
647 else if (dport
== BFD_CONTROL_PORT
||
648 dport
== BFD_ECHO_PORT
)
649 bfd_print((const u_char
*)(up
+1), length
, dport
);
650 else if (ISPORT(LMP_PORT
))
651 lmp_print((const u_char
*)(up
+ 1), length
);
652 else if (ISPORT(VQP_PORT
))
653 vqp_print((const u_char
*)(up
+ 1), length
);
654 else if (ISPORT(SFLOW_PORT
))
655 sflow_print((const u_char
*)(up
+ 1), length
);
656 else if (dport
== LWAPP_CONTROL_PORT
)
657 lwapp_control_print((const u_char
*)(up
+ 1), length
, 1);
658 else if (sport
== LWAPP_CONTROL_PORT
)
659 lwapp_control_print((const u_char
*)(up
+ 1), length
, 0);
660 else if (ISPORT(LWAPP_DATA_PORT
))
661 lwapp_data_print((const u_char
*)(up
+ 1), length
);
662 else if (ISPORT(SIP_PORT
))
663 sip_print((const u_char
*)(up
+ 1), length
);
664 else if (ISPORT(SYSLOG_PORT
))
665 syslog_print((const u_char
*)(up
+ 1), length
);
667 (void)printf("UDP, length %u",
668 (u_int32_t
)(ulen
- sizeof(*up
)));
671 (void)printf("UDP, length %u", (u_int32_t
)(ulen
- sizeof(*up
)));
677 * c-style: whitesmith