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 1.138.2.1 2007/03/28 07:45:46 hannes Exp $ (LBL)";
31 #include <tcpdump-stdinc.h>
36 #include <arpa/tftp.h>
41 #include "interface.h"
42 #include "addrtoname.h"
44 #include "appletalk.h"
61 u_int16_t rh_flags
; /* T:2 P:1 CNT:5 PT:8 */
62 u_int16_t rh_len
; /* length of message (in words) */
63 u_int32_t rh_ssrc
; /* synchronization src id */
67 u_int32_t upper
; /* more significant 32 bits */
68 u_int32_t lower
; /* less significant 32 bits */
75 ntp64 sr_ntp
; /* 64-bit ntp timestamp */
76 u_int32_t sr_ts
; /* reference media timestamp */
77 u_int32_t sr_np
; /* no. packets sent */
78 u_int32_t sr_nb
; /* no. bytes sent */
83 * Time stamps are middle 32-bits of ntp timestamp.
86 u_int32_t rr_srcid
; /* sender being reported */
87 u_int32_t rr_nl
; /* no. packets lost */
88 u_int32_t rr_ls
; /* extended last seq number received */
89 u_int32_t rr_dv
; /* jitter (delay variance) */
90 u_int32_t rr_lsr
; /* orig. ts from last rr from this src */
91 u_int32_t rr_dlsr
; /* time from recpt of last rr to xmit time */
95 #define RTCP_PT_SR 200
96 #define RTCP_PT_RR 201
97 #define RTCP_PT_SDES 202
98 #define RTCP_SDES_CNAME 1
99 #define RTCP_SDES_NAME 2
100 #define RTCP_SDES_EMAIL 3
101 #define RTCP_SDES_PHONE 4
102 #define RTCP_SDES_LOC 5
103 #define RTCP_SDES_TOOL 6
104 #define RTCP_SDES_NOTE 7
105 #define RTCP_SDES_PRIV 8
106 #define RTCP_PT_BYE 203
107 #define RTCP_PT_APP 204
110 vat_print(const void *hdr
, register const struct udphdr
*up
)
113 u_int ts
= *(u_int16_t
*)hdr
;
114 if ((ts
& 0xf060) != 0) {
116 (void)printf("udp/vt %u %d / %d",
117 (u_int32_t
)(EXTRACT_16BITS(&up
->uh_ulen
) - sizeof(*up
)),
118 ts
& 0x3ff, ts
>> 10);
121 u_int32_t i0
= EXTRACT_32BITS(&((u_int
*)hdr
)[0]);
122 u_int32_t i1
= EXTRACT_32BITS(&((u_int
*)hdr
)[1]);
123 printf("udp/vat %u c%d %u%s",
124 (u_int32_t
)(EXTRACT_16BITS(&up
->uh_ulen
) - sizeof(*up
) - 8),
126 i1
, i0
& 0x800000? "*" : "");
129 printf(" f%d", (i0
>> 16) & 0x1f);
131 printf(" s%d", (i0
>> 24) & 0x3f);
136 rtp_print(const void *hdr
, u_int len
, register const struct udphdr
*up
)
139 u_int
*ip
= (u_int
*)hdr
;
140 u_int hasopt
, hasext
, contype
, hasmarker
;
141 u_int32_t i0
= EXTRACT_32BITS(&((u_int
*)hdr
)[0]);
142 u_int32_t i1
= EXTRACT_32BITS(&((u_int
*)hdr
)[1]);
143 u_int dlen
= EXTRACT_16BITS(&up
->uh_ulen
) - sizeof(*up
) - 8;
151 if ((i0
>> 30) == 1) {
153 hasopt
= i0
& 0x800000;
154 contype
= (i0
>> 16) & 0x3f;
155 hasmarker
= i0
& 0x400000;
159 hasext
= i0
& 0x10000000;
160 contype
= (i0
>> 16) & 0x7f;
161 hasmarker
= i0
& 0x800000;
167 printf("udp/%s %d c%d %s%s %d %u",
171 (hasopt
|| hasext
)? "+" : "",
176 printf(" %u", EXTRACT_32BITS(&((u_int
*)hdr
)[2]));
181 optlen
= (i2
>> 16) & 0xff;
182 if (optlen
== 0 || optlen
> len
) {
188 } while ((int)i2
>= 0);
193 extlen
= (i2
& 0xffff) + 1;
200 if (contype
== 0x1f) /*XXX H.261 */
201 printf(" 0x%04x", ip
[0] >> 16);
205 static const u_char
*
206 rtcp_print(const u_char
*hdr
, const u_char
*ep
)
208 /* rtp v2 control (rtcp) */
209 struct rtcp_rr
*rr
= 0;
211 struct rtcphdr
*rh
= (struct rtcphdr
*)hdr
;
216 if ((u_char
*)(rh
+ 1) > ep
) {
220 len
= (EXTRACT_16BITS(&rh
->rh_len
) + 1) * 4;
221 flags
= EXTRACT_16BITS(&rh
->rh_flags
);
222 cnt
= (flags
>> 8) & 0x1f;
223 switch (flags
& 0xff) {
225 sr
= (struct rtcp_sr
*)(rh
+ 1);
227 if (len
!= cnt
* sizeof(*rr
) + sizeof(*sr
) + sizeof(*rh
))
228 printf(" [%d]", len
);
230 printf(" %u", EXTRACT_32BITS(&rh
->rh_ssrc
));
231 if ((u_char
*)(sr
+ 1) > ep
) {
235 ts
= (double)(EXTRACT_32BITS(&sr
->sr_ntp
.upper
)) +
236 ((double)(EXTRACT_32BITS(&sr
->sr_ntp
.lower
)) /
238 printf(" @%.2f %u %up %ub", ts
, EXTRACT_32BITS(&sr
->sr_ts
),
239 EXTRACT_32BITS(&sr
->sr_np
), EXTRACT_32BITS(&sr
->sr_nb
));
240 rr
= (struct rtcp_rr
*)(sr
+ 1);
244 if (len
!= cnt
* sizeof(*rr
) + sizeof(*rh
))
245 printf(" [%d]", len
);
246 rr
= (struct rtcp_rr
*)(rh
+ 1);
248 printf(" %u", EXTRACT_32BITS(&rh
->rh_ssrc
));
251 printf(" sdes %d", len
);
253 printf(" %u", EXTRACT_32BITS(&rh
->rh_ssrc
));
257 printf(" bye %d", len
);
259 printf(" %u", EXTRACT_32BITS(&rh
->rh_ssrc
));
263 printf(" type-0x%x %d", flags
& 0xff, len
);
270 if ((u_char
*)(rr
+ 1) > ep
) {
275 printf(" %u", EXTRACT_32BITS(&rr
->rr_srcid
));
276 ts
= (double)(EXTRACT_32BITS(&rr
->rr_lsr
)) / 65536.;
277 dts
= (double)(EXTRACT_32BITS(&rr
->rr_dlsr
)) / 65536.;
278 printf(" %ul %us %uj @%.2f+%.2f",
279 EXTRACT_32BITS(&rr
->rr_nl
) & 0x00ffffff,
280 EXTRACT_32BITS(&rr
->rr_ls
),
281 EXTRACT_32BITS(&rr
->rr_dv
), ts
, dts
);
286 static int udp_cksum(register const struct ip
*ip
,
287 register const struct udphdr
*up
,
300 register const u_int16_t
*sp
;
302 /* pseudo-header.. */
303 phu
.ph
.len
= htons((u_int16_t
)len
);
305 phu
.ph
.proto
= IPPROTO_UDP
;
306 memcpy(&phu
.ph
.src
, &ip
->ip_src
.s_addr
, sizeof(u_int32_t
));
308 memcpy(&phu
.ph
.dst
, &ip
->ip_dst
.s_addr
, sizeof(u_int32_t
));
310 phu
.ph
.dst
= ip_finddst(ip
);
313 return in_cksum((u_short
*)up
, len
,
314 sp
[0]+sp
[1]+sp
[2]+sp
[3]+sp
[4]+sp
[5]);
318 static int udp6_cksum(const struct ip6_hdr
*ip6
, const struct udphdr
*up
,
322 register const u_int16_t
*sp
;
326 struct in6_addr ph_src
;
327 struct in6_addr ph_dst
;
336 memset(&phu
, 0, sizeof(phu
));
337 phu
.ph
.ph_src
= ip6
->ip6_src
;
338 phu
.ph
.ph_dst
= ip6
->ip6_dst
;
339 phu
.ph
.ph_len
= htonl(len
);
340 phu
.ph
.ph_nxt
= IPPROTO_UDP
;
343 for (i
= 0; i
< sizeof(phu
.pa
) / sizeof(phu
.pa
[0]); i
++)
346 sp
= (const u_int16_t
*)up
;
348 for (i
= 0; i
< (len
& ~1); i
+= 2)
352 sum
+= htons((*(const u_int8_t
*)sp
) << 8);
355 sum
= (sum
& 0xffff) + (sum
>> 16);
363 udpipaddr_print(const struct ip
*ip
, int sport
, int dport
)
366 const struct ip6_hdr
*ip6
;
369 ip6
= (const struct ip6_hdr
*)ip
;
374 if (ip6
->ip6_nxt
== IPPROTO_UDP
) {
376 (void)printf("%s > %s: ",
377 ip6addr_string(&ip6
->ip6_src
),
378 ip6addr_string(&ip6
->ip6_dst
));
380 (void)printf("%s.%s > %s.%s: ",
381 ip6addr_string(&ip6
->ip6_src
),
382 udpport_string(sport
),
383 ip6addr_string(&ip6
->ip6_dst
),
384 udpport_string(dport
));
388 (void)printf("%s > %s: ",
389 udpport_string(sport
),
390 udpport_string(dport
));
396 if (ip
->ip_p
== IPPROTO_UDP
) {
398 (void)printf("%s > %s: ",
399 ipaddr_string(&ip
->ip_src
),
400 ipaddr_string(&ip
->ip_dst
));
402 (void)printf("%s.%s > %s.%s: ",
403 ipaddr_string(&ip
->ip_src
),
404 udpport_string(sport
),
405 ipaddr_string(&ip
->ip_dst
),
406 udpport_string(dport
));
410 (void)printf("%s > %s: ",
411 udpport_string(sport
),
412 udpport_string(dport
));
419 udp_print(register const u_char
*bp
, u_int length
,
420 register const u_char
*bp2
, int fragmented
)
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
;
428 register const struct ip6_hdr
*ip6
;
433 up
= (struct udphdr
*)bp
;
434 ip
= (struct ip
*)bp2
;
437 ip6
= (struct ip6_hdr
*)bp2
;
441 cp
= (u_char
*)(up
+ 1);
442 if (!TTEST(up
->uh_dport
)) {
443 udpipaddr_print(ip
, -1, -1);
444 (void)printf("[|udp]");
448 sport
= EXTRACT_16BITS(&up
->uh_sport
);
449 dport
= EXTRACT_16BITS(&up
->uh_dport
);
451 if (length
< sizeof(struct udphdr
)) {
452 udpipaddr_print(ip
, sport
, dport
);
453 (void)printf("truncated-udp %d", length
);
456 length
-= sizeof(struct udphdr
);
459 udpipaddr_print(ip
, sport
, dport
);
460 (void)printf("[|udp]");
464 ulen
= EXTRACT_16BITS(&up
->uh_ulen
);
466 udpipaddr_print(ip
, sport
, dport
);
467 (void)printf("truncated-udplength %d", ulen
);
471 register struct sunrpc_msg
*rp
;
472 enum sunrpc_msg_type direction
;
474 switch (packettype
) {
477 udpipaddr_print(ip
, sport
, dport
);
478 vat_print((void *)(up
+ 1), up
);
482 udpipaddr_print(ip
, sport
, dport
);
483 wb_print((void *)(up
+ 1), length
);
487 rp
= (struct sunrpc_msg
*)(up
+ 1);
488 direction
= (enum sunrpc_msg_type
)EXTRACT_32BITS(&rp
->rm_direction
);
489 if (direction
== SUNRPC_CALL
)
490 sunrpcrequest_print((u_char
*)rp
, length
,
493 nfsreply_print((u_char
*)rp
, length
,
494 (u_char
*)ip
); /*XXX*/
498 udpipaddr_print(ip
, sport
, dport
);
499 rtp_print((void *)(up
+ 1), length
, up
);
503 udpipaddr_print(ip
, sport
, dport
);
505 cp
= rtcp_print(cp
, ep
);
509 udpipaddr_print(ip
, sport
, dport
);
510 snmp_print((const u_char
*)(up
+ 1), length
);
514 udpipaddr_print(ip
, sport
, dport
);
515 cnfp_print(cp
, (const u_char
*)ip
);
519 udpipaddr_print(ip
, sport
, dport
);
520 tftp_print(cp
, length
);
524 udpipaddr_print(ip
, sport
, dport
);
525 aodv_print((const u_char
*)(up
+ 1), length
,
537 register struct sunrpc_msg
*rp
;
538 enum sunrpc_msg_type direction
;
540 rp
= (struct sunrpc_msg
*)(up
+ 1);
541 if (TTEST(rp
->rm_direction
)) {
542 direction
= (enum sunrpc_msg_type
)EXTRACT_32BITS(&rp
->rm_direction
);
543 if (dport
== NFS_PORT
&& direction
== SUNRPC_CALL
) {
544 nfsreq_print((u_char
*)rp
, length
,
548 if (sport
== NFS_PORT
&& direction
== SUNRPC_REPLY
) {
549 nfsreply_print((u_char
*)rp
, length
,
554 if (dport
== SUNRPC_PORT
&& direction
== SUNRPC_CALL
) {
555 sunrpcrequest_print((u_char
*)rp
, length
, (u_char
*)ip
);
560 if (TTEST(((struct LAP
*)cp
)->type
) &&
561 ((struct LAP
*)cp
)->type
== lapDDP
&&
562 (atalk_port(sport
) || atalk_port(dport
))) {
564 fputs("kip ", stdout
);
565 llap_print(cp
, length
);
569 udpipaddr_print(ip
, sport
, dport
);
571 if (IP_V(ip
) == 4 && (vflag
> 1) && !fragmented
) {
572 int sum
= up
->uh_sum
;
574 (void)printf("[no cksum] ");
575 } else if (TTEST2(cp
[0], length
)) {
576 sum
= udp_cksum(ip
, up
, length
+ sizeof(struct udphdr
));
578 (void)printf("[bad udp cksum %x!] ", sum
);
580 (void)printf("[udp sum ok] ");
584 if (IP_V(ip
) == 6 && ip6
->ip6_plen
&& vflag
&& !fragmented
) {
585 int sum
= up
->uh_sum
;
586 /* for IPv6, UDP checksum is mandatory */
587 if (TTEST2(cp
[0], length
)) {
588 sum
= udp6_cksum(ip6
, up
, length
+ sizeof(struct udphdr
));
590 (void)printf("[bad udp cksum %x!] ", sum
);
592 (void)printf("[udp sum ok] ");
598 #define ISPORT(p) (dport == (p) || sport == (p))
599 if (ISPORT(NAMESERVER_PORT
))
600 ns_print((const u_char
*)(up
+ 1), length
, 0);
601 else if (ISPORT(MULTICASTDNS_PORT
))
602 ns_print((const u_char
*)(up
+ 1), length
, 1);
603 else if (ISPORT(TIMED_PORT
))
604 timed_print((const u_char
*)(up
+ 1));
605 else if (ISPORT(TFTP_PORT
))
606 tftp_print((const u_char
*)(up
+ 1), length
);
607 else if (ISPORT(IPPORT_BOOTPC
) || ISPORT(IPPORT_BOOTPS
))
608 bootp_print((const u_char
*)(up
+ 1), length
);
609 else if (ISPORT(RIP_PORT
))
610 rip_print((const u_char
*)(up
+ 1), length
);
611 else if (ISPORT(AODV_PORT
))
612 aodv_print((const u_char
*)(up
+ 1), length
,
618 else if (ISPORT(ISAKMP_PORT
))
619 isakmp_print(gndo
, (const u_char
*)(up
+ 1), length
, bp2
);
620 else if (ISPORT(ISAKMP_PORT_NATT
))
621 isakmp_rfc3948_print(gndo
, (const u_char
*)(up
+ 1), length
, bp2
);
623 else if (ISPORT(ISAKMP_PORT_USER1
) || ISPORT(ISAKMP_PORT_USER2
))
624 isakmp_print(gndo
, (const u_char
*)(up
+ 1), length
, bp2
);
626 else if (ISPORT(SNMP_PORT
) || ISPORT(SNMPTRAP_PORT
))
627 snmp_print((const u_char
*)(up
+ 1), length
);
628 else if (ISPORT(NTP_PORT
))
629 ntp_print((const u_char
*)(up
+ 1), length
);
630 else if (ISPORT(KERBEROS_PORT
) || ISPORT(KERBEROS_SEC_PORT
))
631 krb_print((const void *)(up
+ 1));
632 else if (ISPORT(L2TP_PORT
))
633 l2tp_print((const u_char
*)(up
+ 1), length
);
634 #ifdef TCPDUMP_DO_SMB
635 else if (ISPORT(NETBIOS_NS_PORT
))
636 nbt_udp137_print((const u_char
*)(up
+ 1), length
);
637 else if (ISPORT(NETBIOS_DGRAM_PORT
))
638 nbt_udp138_print((const u_char
*)(up
+ 1), length
);
640 else if (dport
== 3456)
641 vat_print((const void *)(up
+ 1), up
);
642 else if (ISPORT(ZEPHYR_SRV_PORT
) || ISPORT(ZEPHYR_CLT_PORT
))
643 zephyr_print((const void *)(up
+ 1), length
);
645 * Since there are 10 possible ports to check, I think
646 * a <> test would be more efficient
648 else if ((sport
>= RX_PORT_LOW
&& sport
<= RX_PORT_HIGH
) ||
649 (dport
>= RX_PORT_LOW
&& dport
<= RX_PORT_HIGH
))
650 rx_print((const void *)(up
+ 1), length
, sport
, dport
,
653 else if (ISPORT(RIPNG_PORT
))
654 ripng_print((const u_char
*)(up
+ 1), length
);
655 else if (ISPORT(DHCP6_SERV_PORT
) || ISPORT(DHCP6_CLI_PORT
)) {
656 dhcp6_print((const u_char
*)(up
+ 1), length
);
660 * Kludge in test for whiteboard packets.
662 else if (dport
== 4567)
663 wb_print((const void *)(up
+ 1), length
);
664 else if (ISPORT(CISCO_AUTORP_PORT
))
665 cisco_autorp_print((const void *)(up
+ 1), length
);
666 else if (ISPORT(RADIUS_PORT
) ||
667 ISPORT(RADIUS_NEW_PORT
) ||
668 ISPORT(RADIUS_ACCOUNTING_PORT
) ||
669 ISPORT(RADIUS_NEW_ACCOUNTING_PORT
) )
670 radius_print((const u_char
*)(up
+1), length
);
671 else if (dport
== HSRP_PORT
)
672 hsrp_print((const u_char
*)(up
+ 1), length
);
673 else if (ISPORT(LWRES_PORT
))
674 lwres_print((const u_char
*)(up
+ 1), length
);
675 else if (ISPORT(LDP_PORT
))
676 ldp_print((const u_char
*)(up
+ 1), length
);
677 else if (ISPORT(OLSR_PORT
))
678 olsr_print((const u_char
*)(up
+ 1), length
);
679 else if (ISPORT(MPLS_LSP_PING_PORT
))
680 lspping_print((const u_char
*)(up
+ 1), length
);
681 else if (dport
== BFD_CONTROL_PORT
||
682 dport
== BFD_ECHO_PORT
)
683 bfd_print((const u_char
*)(up
+1), length
, dport
);
684 else if (ISPORT(LMP_PORT
))
685 lmp_print((const u_char
*)(up
+ 1), length
);
686 else if (ISPORT(SIP_PORT
))
687 sip_print((const u_char
*)(up
+ 1), length
);
688 else if (ISPORT(SYSLOG_PORT
))
689 syslog_print((const u_char
*)(up
+ 1), length
);
691 (void)printf("UDP, length %u",
692 (u_int32_t
)(ulen
- sizeof(*up
)));
695 (void)printf("UDP, length %u", (u_int32_t
)(ulen
- sizeof(*up
)));
701 * c-style: whitesmith