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
,
299 register const u_int16_t
*sp
;
301 /* pseudo-header.. */
302 phu
.ph
.len
= htons((u_int16_t
)len
);
304 phu
.ph
.proto
= IPPROTO_UDP
;
305 memcpy(&phu
.ph
.src
, &ip
->ip_src
.s_addr
, sizeof(u_int32_t
));
307 memcpy(&phu
.ph
.dst
, &ip
->ip_dst
.s_addr
, sizeof(u_int32_t
));
309 phu
.ph
.dst
= ip_finddst(ip
);
312 return in_cksum((u_short
*)up
, len
,
313 sp
[0]+sp
[1]+sp
[2]+sp
[3]+sp
[4]+sp
[5]);
317 static int udp6_cksum(const struct ip6_hdr
*ip6
, const struct udphdr
*up
,
321 register const u_int16_t
*sp
;
325 struct in6_addr ph_src
;
326 struct in6_addr ph_dst
;
335 memset(&phu
, 0, sizeof(phu
));
336 phu
.ph
.ph_src
= ip6
->ip6_src
;
337 phu
.ph
.ph_dst
= ip6
->ip6_dst
;
338 phu
.ph
.ph_len
= htonl(len
);
339 phu
.ph
.ph_nxt
= IPPROTO_UDP
;
342 for (i
= 0; i
< sizeof(phu
.pa
) / sizeof(phu
.pa
[0]); i
++)
345 sp
= (const u_int16_t
*)up
;
347 for (i
= 0; i
< (len
& ~1); i
+= 2)
351 sum
+= htons((*(const u_int8_t
*)sp
) << 8);
354 sum
= (sum
& 0xffff) + (sum
>> 16);
362 udpipaddr_print(const struct ip
*ip
, int sport
, int dport
)
365 const struct ip6_hdr
*ip6
;
368 ip6
= (const struct ip6_hdr
*)ip
;
373 if (ip6
->ip6_nxt
== IPPROTO_UDP
) {
375 (void)printf("%s > %s: ",
376 ip6addr_string(&ip6
->ip6_src
),
377 ip6addr_string(&ip6
->ip6_dst
));
379 (void)printf("%s.%s > %s.%s: ",
380 ip6addr_string(&ip6
->ip6_src
),
381 udpport_string(sport
),
382 ip6addr_string(&ip6
->ip6_dst
),
383 udpport_string(dport
));
387 (void)printf("%s > %s: ",
388 udpport_string(sport
),
389 udpport_string(dport
));
395 if (ip
->ip_p
== IPPROTO_UDP
) {
397 (void)printf("%s > %s: ",
398 ipaddr_string(&ip
->ip_src
),
399 ipaddr_string(&ip
->ip_dst
));
401 (void)printf("%s.%s > %s.%s: ",
402 ipaddr_string(&ip
->ip_src
),
403 udpport_string(sport
),
404 ipaddr_string(&ip
->ip_dst
),
405 udpport_string(dport
));
409 (void)printf("%s > %s: ",
410 udpport_string(sport
),
411 udpport_string(dport
));
418 udp_print(register const u_char
*bp
, u_int length
,
419 register const u_char
*bp2
, int fragmented
)
421 register const struct udphdr
*up
;
422 register const struct ip
*ip
;
423 register const u_char
*cp
;
424 register const u_char
*ep
= bp
+ length
;
425 u_int16_t sport
, dport
, ulen
;
427 register const struct ip6_hdr
*ip6
;
432 up
= (struct udphdr
*)bp
;
433 ip
= (struct ip
*)bp2
;
436 ip6
= (struct ip6_hdr
*)bp2
;
440 if (!TTEST(up
->uh_dport
)) {
441 udpipaddr_print(ip
, -1, -1);
442 (void)printf("[|udp]");
446 sport
= EXTRACT_16BITS(&up
->uh_sport
);
447 dport
= EXTRACT_16BITS(&up
->uh_dport
);
449 if (length
< sizeof(struct udphdr
)) {
450 udpipaddr_print(ip
, sport
, dport
);
451 (void)printf("truncated-udp %d", length
);
454 ulen
= EXTRACT_16BITS(&up
->uh_ulen
);
455 if (ulen
< sizeof(struct udphdr
)) {
456 udpipaddr_print(ip
, sport
, dport
);
457 printf("truncated-udplength %d", ulen
);
460 ulen
-= sizeof(struct udphdr
);
461 length
-= sizeof(struct udphdr
);
465 cp
= (u_char
*)(up
+ 1);
467 udpipaddr_print(ip
, sport
, dport
);
473 register struct sunrpc_msg
*rp
;
474 enum sunrpc_msg_type direction
;
476 switch (packettype
) {
479 udpipaddr_print(ip
, sport
, dport
);
480 vat_print((void *)(up
+ 1), up
);
484 udpipaddr_print(ip
, sport
, dport
);
485 wb_print((void *)(up
+ 1), length
);
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
,
495 nfsreply_print((u_char
*)rp
, length
,
496 (u_char
*)ip
); /*XXX*/
500 udpipaddr_print(ip
, sport
, dport
);
501 rtp_print((void *)(up
+ 1), length
, up
);
505 udpipaddr_print(ip
, sport
, dport
);
507 cp
= rtcp_print(cp
, ep
);
511 udpipaddr_print(ip
, sport
, dport
);
512 snmp_print((const u_char
*)(up
+ 1), length
);
516 udpipaddr_print(ip
, sport
, dport
);
517 cnfp_print(cp
, (const u_char
*)ip
);
521 udpipaddr_print(ip
, sport
, dport
);
522 tftp_print(cp
, length
);
526 udpipaddr_print(ip
, sport
, dport
);
527 aodv_print((const u_char
*)(up
+ 1), length
,
539 register struct sunrpc_msg
*rp
;
540 enum sunrpc_msg_type direction
;
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
,
550 if (sport
== NFS_PORT
&& direction
== SUNRPC_REPLY
) {
551 nfsreply_print((u_char
*)rp
, length
,
556 if (dport
== SUNRPC_PORT
&& direction
== SUNRPC_CALL
) {
557 sunrpcrequest_print((u_char
*)rp
, length
, (u_char
*)ip
);
562 if (TTEST(((struct LAP
*)cp
)->type
) &&
563 ((struct LAP
*)cp
)->type
== lapDDP
&&
564 (atalk_port(sport
) || atalk_port(dport
))) {
566 fputs("kip ", stdout
);
567 llap_print(cp
, length
);
571 udpipaddr_print(ip
, sport
, dport
);
573 if (IP_V(ip
) == 4 && (vflag
> 1) && !Kflag
&& !fragmented
) {
574 int sum
= up
->uh_sum
;
576 (void)printf("[no cksum] ");
577 } else if (TTEST2(cp
[0], length
)) {
578 sum
= udp_cksum(ip
, up
, length
+ sizeof(struct udphdr
));
580 (void)printf("[bad udp cksum %x!] ", sum
);
582 (void)printf("[udp sum ok] ");
586 if (IP_V(ip
) == 6 && ip6
->ip6_plen
&& vflag
&& !Kflag
&& !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
));
592 (void)printf("[bad udp cksum %x!] ", sum
);
594 (void)printf("[udp sum ok] ");
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
,
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
);
625 else if (ISPORT(ISAKMP_PORT_USER1
) || ISPORT(ISAKMP_PORT_USER2
))
626 isakmp_print(gndo
, (const u_char
*)(up
+ 1), length
, bp2
);
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
);
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
);
647 * Since there are 10 possible ports to check, I think
648 * a <> test would be more efficient
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
,
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
);
662 * Kludge in test for whiteboard packets.
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
,
682 (IP_V(ip
) == 6) ? 1 : 0);
686 else if (ISPORT(MPLS_LSP_PING_PORT
))
687 lspping_print((const u_char
*)(up
+ 1), length
);
688 else if (dport
== BFD_CONTROL_PORT
||
689 dport
== BFD_ECHO_PORT
)
690 bfd_print((const u_char
*)(up
+1), length
, dport
);
691 else if (ISPORT(LMP_PORT
))
692 lmp_print((const u_char
*)(up
+ 1), length
);
693 else if (ISPORT(VQP_PORT
))
694 vqp_print((const u_char
*)(up
+ 1), length
);
695 else if (ISPORT(SFLOW_PORT
))
696 sflow_print((const u_char
*)(up
+ 1), length
);
697 else if (dport
== LWAPP_CONTROL_PORT
)
698 lwapp_control_print((const u_char
*)(up
+ 1), length
, 1);
699 else if (sport
== LWAPP_CONTROL_PORT
)
700 lwapp_control_print((const u_char
*)(up
+ 1), length
, 0);
701 else if (ISPORT(LWAPP_DATA_PORT
))
702 lwapp_data_print((const u_char
*)(up
+ 1), length
);
703 else if (ISPORT(SIP_PORT
))
704 sip_print((const u_char
*)(up
+ 1), length
);
705 else if (ISPORT(SYSLOG_PORT
))
706 syslog_print((const u_char
*)(up
+ 1), length
);
709 printf("UDP, bad length %u > %u",
712 printf("UDP, length %u", ulen
);
717 printf("UDP, bad length %u > %u",
720 printf("UDP, length %u", ulen
);
727 * c-style: whitesmith