/* * 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 lint static const char rcsid[] _U_ = "@(#) $Header: /tcpdump/master/tcpdump/print-symantec.c,v 1.4.2.1 2005/07/07 01:24:39 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 void symantec_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_int symantec_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)); }