mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
122 lines
3.8 KiB
C
122 lines
3.8 KiB
C
|
/*
|
||
|
* 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 2004/04/05 00:13:59 mcr 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 (!xflag && !qflag)
|
||
|
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 (!xflag && !qflag)
|
||
|
default_print(p, caplen);
|
||
|
}
|
||
|
|
||
|
return (sizeof (struct symantec_header));
|
||
|
}
|