/* * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000 *	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 lintstatic const char rcsid[] _U_ =    "@(#) $Header: /tcpdump/master/tcpdump/print-symantec.c,v 1.5 2005-07-07 01:22:21 guy Exp $ (LBL)";#endif#ifdef HAVE_CONFIG_H#include "config.h"#endif#include <tcpdump-stdinc.h>#include <stdio.h>#include <pcap.h>#include "interface.h"#include "addrtoname.h"#include "ethertype.h"#include "ether.h"struct symantec_header {	u_int8_t  stuff1[6];	u_int16_t ether_type;	u_int8_t  stuff2[36];};static inline voidsymantec_hdr_print(register const u_char *bp, u_int length){	register const struct symantec_header *sp;	u_int16_t etype;	sp = (const struct symantec_header *)bp;	etype = ntohs(sp->ether_type);	if (!qflag) {	        if (etype <= ETHERMTU)		          (void)printf("invalid ethertype %u", etype);                else 		          (void)printf("ethertype %s (0x%04x)",				       tok2str(ethertype_values,"Unknown", etype),                                       etype);        } else {                if (etype <= ETHERMTU)                          (void)printf("invalid ethertype %u", etype);                else                           (void)printf("%s", tok2str(ethertype_values,"Unknown Ethertype (0x%04x)", etype));          }	(void)printf(", length %u: ", length);}/* * This is the top level routine of the printer.  'p' points * to the ether header of the packet, 'h->ts' is the timestamp, * 'h->len' is the length of the packet off the wire, and 'h->caplen' * is the number of bytes actually captured. */u_intsymantec_if_print(const struct pcap_pkthdr *h, const u_char *p){	u_int length = h->len;	u_int caplen = h->caplen;	struct symantec_header *sp;	u_short ether_type;	u_short extracted_ether_type;	if (caplen < sizeof (struct symantec_header)) {		printf("[|symantec]");		return caplen;	}	if (eflag)		symantec_hdr_print(p, length);	length -= sizeof (struct symantec_header);	caplen -= sizeof (struct symantec_header);	sp = (struct symantec_header *)p;	p += sizeof (struct symantec_header);	ether_type = ntohs(sp->ether_type);	if (ether_type <= ETHERMTU) {		/* ether_type not known, print raw packet */		if (!eflag)			symantec_hdr_print((u_char *)sp, length + sizeof (struct symantec_header));		if (!suppress_default_print)			default_print(p, caplen);	} else if (ether_encap_print(ether_type, p, length, caplen,	    &extracted_ether_type) == 0) {		/* ether_type not known, print raw packet */		if (!eflag)			symantec_hdr_print((u_char *)sp, length + sizeof (struct symantec_header));		if (!suppress_default_print)			default_print(p, caplen);	} 	return (sizeof (struct symantec_header));}