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/* $OpenBSD: print-udp.c,v 1.2 1996/03/04 15:59:41 mickey Exp $ */
/* $NetBSD: print-udp.c,v 1.3 1995/03/06 19:11:36 mycroft Exp $ */
/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static char rcsid[] =
"@(#) Header: print-udp.c,v 1.37 94/06/10 17:01:42 mccanne Exp (LBL)";
#endif
#include <sys/param.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#undef NOERROR /* Solaris sucks */
#include <arpa/nameser.h>
#include <arpa/tftp.h>
#ifdef SOLARIS
#include <tiuser.h>
#endif
#include <rpc/rpc.h>
#include <errno.h>
#include <stdio.h>
#include "interface.h"
#include "addrtoname.h"
#include "appletalk.h"
#include "nfsv2.h"
#include "bootp.h"
extern int packettype;
static void
vat_print(const void *hdr, int len, register const struct udphdr *up)
{
/* vat/vt audio */
u_int ts = *(u_short *)hdr;
if ((ts & 0xf060) != 0) {
/* probably vt */
(void)printf(" udp/vt %d %d / %d",
ntohs(up->uh_ulen) - sizeof(*up),
ts & 0x3ff, ts >> 10);
} else {
/* probably vat */
u_int i0 = ((u_int *)hdr)[0];
u_int i1 = ((u_int *)hdr)[1];
printf(" udp/vat %d c%d %u%s",
ntohs(up->uh_ulen) - sizeof(*up) - 8,
i0 & 0xffff,
i1, i0 & 0x800000? "*" : "");
/* audio format */
if (i0 & 0x1f0000)
printf(" f%d", (i0 >> 16) & 0x1f);
if (i0 & 0x3f000000)
printf(" s%d", (i0 >> 24) & 0x3f);
}
}
static void
rtp_print(const void *hdr, int len, register const struct udphdr *up)
{
/* rtp v1 video */
u_int *ip = (u_int *)hdr;
u_int i0 = ((u_int *)hdr)[0];
u_int i1 = ((u_int *)hdr)[1];
u_int hasopt = i0 & 0x800000;
u_int contype = (i0 >> 16) & 0x3f;
printf(" udp/rtp %d c%d %s%s %d",
ntohs(up->uh_ulen) - sizeof(*up) - 8,
contype,
hasopt? "+" : "",
i0 & 0x400000? "*" : "",
i0 & 0xffff);
if (contype == 31) {
ip += 2;
len >>= 2;
len -= 2;
if (hasopt) {
u_int i2, optlen;
do {
i2 = ip[0];
optlen = (i2 >> 16) & 0xff;
if (optlen == 0 || optlen > len) {
printf(" !opt");
return;
}
ip += optlen;
} while ((int)i2 >= 0);
}
printf(" 0x%04x", ip[0] >> 16);
}
if (vflag)
printf(" %u", i1);
}
/* XXX probably should use getservbyname() and cache answers */
#define TFTP_PORT 69 /*XXX*/
#define SUNRPC_PORT 111 /*XXX*/
#define SNMP_PORT 161 /*XXX*/
#define NTP_PORT 123 /*XXX*/
#define SNMPTRAP_PORT 162 /*XXX*/
#define RIP_PORT 520 /*XXX*/
void
udp_print(register const u_char *bp, int length, register const u_char *bp2)
{
register const struct udphdr *up;
register const struct ip *ip;
register const u_char *cp;
u_short sport, dport, ulen;
up = (struct udphdr *)bp;
ip = (struct ip *)bp2;
cp = (u_char *)(up + 1);
if (cp > snapend) {
printf("[|udp]");
return;
}
if (length < sizeof(struct udphdr)) {
(void)printf(" truncated-udp %d", length);
return;
}
length -= sizeof(struct udphdr);
sport = ntohs(up->uh_sport);
dport = ntohs(up->uh_dport);
ulen = ntohs(up->uh_ulen);
if (packettype) {
register struct rpc_msg *rp;
enum msg_type direction;
switch (packettype) {
case 1:
(void)printf("%s.%s > %s.%s:",
ipaddr_string(&ip->ip_src),
udpport_string(sport),
ipaddr_string(&ip->ip_dst),
udpport_string(dport));
vat_print((void *)(up + 1), length, up);
break;
case 2:
(void)printf("%s.%s > %s.%s:",
ipaddr_string(&ip->ip_src),
udpport_string(sport),
ipaddr_string(&ip->ip_dst),
udpport_string(dport));
wb_print((void *)(up + 1), length);
break;
case 3:
rp = (struct rpc_msg *)(up + 1);
direction = (enum msg_type)ntohl(rp->rm_direction);
if (direction == CALL)
sunrpcrequest_print((u_char *)rp, length,
(u_char *)ip);
else
nfsreply_print((u_char *)rp, length,
(u_char *)ip); /*XXX*/
break;
case 4:
(void)printf("%s.%s > %s.%s:",
ipaddr_string(&ip->ip_src),
udpport_string(sport),
ipaddr_string(&ip->ip_dst),
udpport_string(dport));
rtp_print((void *)(up + 1), length, up);
break;
}
return;
}
if (! qflag) {
register struct rpc_msg *rp;
enum msg_type direction;
rp = (struct rpc_msg *)(up + 1);
direction = (enum msg_type)ntohl(rp->rm_direction);
if (dport == NFS_PORT && direction == CALL) {
nfsreq_print((u_char *)rp, length, (u_char *)ip);
return;
}
else if (sport == NFS_PORT && direction == REPLY) {
nfsreply_print((u_char *)rp, length, (u_char *)ip);
return;
}
#ifdef notdef
else if (dport == SUNRPC_PORT && direction == CALL) {
sunrpcrequest_print((u_char *)rp, length, (u_char *)ip);
return;
}
#endif
else if (((struct LAP *)cp)->type == lapDDP &&
(atalk_port(sport) || atalk_port(dport))) {
if (vflag)
fputs("kip ", stdout);
atalk_print(cp, length);
return;
}
}
(void)printf("%s.%s > %s.%s:",
ipaddr_string(&ip->ip_src), udpport_string(sport),
ipaddr_string(&ip->ip_dst), udpport_string(dport));
if (!qflag) {
#define ISPORT(p) (dport == (p) || sport == (p))
if (ISPORT(NAMESERVER_PORT))
ns_print((const u_char *)(up + 1), length);
else if (ISPORT(TFTP_PORT))
tftp_print((const u_char *)(up + 1), length);
else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))
bootp_print((const u_char *)(up + 1), length,
sport, dport);
else if (dport == RIP_PORT)
rip_print((const u_char *)(up + 1), length);
else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT))
snmp_print((const u_char *)(up + 1), length);
else if (ISPORT(NTP_PORT))
ntp_print((const u_char *)(up + 1), length);
else if (dport == 3456)
vat_print((const void *)(up + 1), length, up);
/*
* Kludge in test for whiteboard packets.
*/
else if (dport == 4567)
wb_print((const void *)(up + 1), length);
else
(void)printf(" udp %d", ulen - sizeof(*up));
#undef ISPORT
} else
(void)printf(" udp %d", ulen - sizeof(*up));
}
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