contrib/tcpdump/tcpdump/print-udp.c

/*
 * Copyright (c) 1988-1990 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: /a/cvs/386BSD/src/contrib/tcpdump/tcpdump/print-udp.c,v 1.1.1.1 1993/06/12 14:42:06 rgrimes Exp $ (LBL)";
#endif

#include <sys/param.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>

#include <arpa/nameser.h>
#include <arpa/tftp.h>
#include <errno.h>
#include <sys/time.h>
#include <rpc/rpc.h>

#include "interface.h"
/* These must come after interface.h for BSD. */
#if BSD >= 199006
#include <sys/ucred.h>
#include <nfs/nfsv2.h>
#endif
#include <nfs/nfs.h>

#include "addrtoname.h"
#include "appletalk.h"

#include "bootp.h"

/* 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(up, length, ip)
        register struct udphdr *up;
        int length;
        register struct ip *ip;
{
        register u_char  *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);

        NTOHS(up->uh_sport);
        NTOHS(up->uh_dport);
        NTOHS(up->uh_ulen);

        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 (up->uh_dport == NFS_PORT && direction == CALL) {
                        nfsreq_print(rp, length, ip);
                        return;
                }
                else if (up->uh_sport == NFS_PORT && direction == REPLY) {
                        nfsreply_print(rp, length, ip);
                        return;
                }
#ifdef notdef
                else if (up->uh_dport == SUNRPC_PORT && direction == CALL) {
                        sunrpcrequest_print(rp, length, ip);
                        return;
                }
#endif
                else if (cp[2] == 2 && (atalk_port(up->uh_sport) ||
                         atalk_port(up->uh_dport))) {
                        ddp_print((struct atDDP *)(&cp[3]), length - 3);
                        return;
                }
        }
        (void)printf("%s.%s > %s.%s:",
                ipaddr_string(&ip->ip_src), udpport_string(up->uh_sport),
                ipaddr_string(&ip->ip_dst), udpport_string(up->uh_dport));

        if (!qflag) {
#define ISPORT(p) (up->uh_dport == (p) || up->uh_sport == (p))
                if (ISPORT(NAMESERVER_PORT))
                        ns_print((HEADER *)(up + 1), length);
                else if (ISPORT(TFTP_PORT))
                        tftp_print((struct tftphdr *)(up + 1), length);
                else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))
                        bootp_print((struct bootp *)(up + 1), length,
                            up->uh_sport, up->uh_dport);
                else if (up->uh_dport == RIP_PORT)
                        rip_print((u_char *)(up + 1), length);
                else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT))
                        snmp_print((u_char *)(up + 1), length);
                else if (ISPORT(NTP_PORT))
                        ntp_print((struct ntpdata *)(up + 1), length);
                else
                        (void)printf(" udp %d", up->uh_ulen - sizeof(*up));
#undef ISPORT
        } else
                (void)printf(" udp %d", up->uh_ulen - sizeof(*up));
}