| /* |
| * 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 1.5 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 "extract.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 = EXTRACT_16BITS(&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; |
| |
| 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 = EXTRACT_16BITS(&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 (ethertype_print(gndo, ether_type, p, length, caplen) == 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)); |
| } |