/*      $OpenBSD: print-atm.c,v 1.15 2021/12/01 18:28:45 deraadt Exp $  */

/*
 * Copyright (c) 1994, 1995, 1996, 1997
 *      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.
 */

#include <sys/time.h>
#include <sys/socket.h>

#include <net/if.h>

#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet/tcp.h>

#include <stdio.h>
#include <pcap.h>

#include "interface.h"
#include "addrtoname.h"
#include "ethertype.h"

/*
 * This is the top level routine of the printer.  'p' is the points
 * to the LLC/SNAP header of the packet, 'tvp' is the timestamp,
 * 'length' is the length of the packet off the wire, and 'caplen'
 * is the number of bytes actually captured.
 */
void
atm_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
{
        u_int caplen = h->caplen;
        u_int length = h->len;
        u_short ethertype;

        ts_print(&h->ts);

        if (caplen < 8) {
                printf("[|atm]");
                goto out;
        }
        if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) {
                /*XXX assume 802.6 MAC header from fore driver */
#define MIN_ATM_8026_HDRLEN (20 + 8)
                if (caplen < MIN_ATM_8026_HDRLEN) {
                        printf("[|atm]");
                        goto out;
                }
                if (eflag)
                        printf("%04x%04x %04x%04x ",
                               p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3],
                               p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7],
                               p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11],
                               p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]);
                p += 20;
                length -= 20;
                caplen -= 20;
        }
        ethertype = p[6] << 8 | p[7];
        if (eflag)
                printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
                       p[0], p[1], p[2], /* dsap/ssap/ctrl */
                       p[3], p[4], p[5], /* manufacturer's code */
                       ethertype);

        /*
         * Some printers want to get back at the ethernet addresses,
         * and/or check that they're not walking off the end of the packet.
         * Rather than pass them all the way down, we set these globals.
         */
        packetp = p;
        snapend = p + caplen;

        length -= 8;
        caplen -= 8;
        p += 8;

        switch (ethertype) {

        case ETHERTYPE_IP:
                ip_print(p, length);
                break;

        case ETHERTYPE_IPV6:
                ip6_print(p, length);
                break;

                /*XXX this probably isn't right */
        case ETHERTYPE_ARP:
        case ETHERTYPE_REVARP:
                arp_print(p, length, caplen);
                break;
#ifdef notyet
        case ETHERTYPE_DN:
                decnet_print(p, length, caplen);
                break;

        case ETHERTYPE_ATALK:
                if (vflag)
                        printf("et1 ");
                atalk_print(p, length);
                break;

        case ETHERTYPE_AARP:
                aarp_print(p, length);
                break;

        case ETHERTYPE_LAT:
        case ETHERTYPE_MOPRC:
        case ETHERTYPE_MOPDL:
                /* default_print for now */
#endif
        default:
                /* ether_type not known, print raw packet */
                if (!eflag)
                        printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
                               p[0], p[1], p[2], /* dsap/ssap/ctrl */
                               p[3], p[4], p[5], /* manufacturer's code */
                               ethertype);
                if (!xflag && !qflag)
                        default_print(p, caplen);
        }
        if (xflag)
                default_print(p, caplen);
 out:
        putchar('\n');
}