140 lines
3.6 KiB
C
140 lines
3.6 KiB
C
/*
|
|
* Marko Kiiskila carnil@cs.tut.fi
|
|
*
|
|
* Tampere University of Technology - Telecommunications Laboratory
|
|
*
|
|
* Permission to use, copy, modify and distribute this
|
|
* software and its documentation is hereby granted,
|
|
* provided that both the copyright notice and this
|
|
* permission notice appear in all copies of the software,
|
|
* derivative works or modified versions, and any portions
|
|
* thereof, that both notices appear in supporting
|
|
* documentation, and that the use of this software is
|
|
* acknowledged in any publications resulting from using
|
|
* the software.
|
|
*
|
|
* TUT ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
|
* CONDITION AND DISCLAIMS ANY LIABILITY OF ANY KIND FOR
|
|
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS
|
|
* SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] =
|
|
"@(#) $Header: /tcpdump/master/tcpdump/print-lane.c,v 1.11 2000/12/22 22:45:11 guy Exp $ (LBL)";
|
|
#endif
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
|
|
|
|
#include <netinet/in.h>
|
|
|
|
#include <stdio.h>
|
|
#include <pcap.h>
|
|
|
|
#include "interface.h"
|
|
#include "addrtoname.h"
|
|
#include "ether.h"
|
|
#include "lane.h"
|
|
|
|
static inline void
|
|
lane_print(register const u_char *bp, int length)
|
|
{
|
|
register const struct lecdatahdr_8023 *ep;
|
|
|
|
ep = (const struct lecdatahdr_8023 *)bp;
|
|
if (qflag)
|
|
(void)printf("lecid:%d %s %s %d: ",
|
|
ntohs(ep->le_header),
|
|
etheraddr_string(ep->h_source),
|
|
etheraddr_string(ep->h_dest),
|
|
length);
|
|
else
|
|
(void)printf("lecid:%d %s %s %s %d: ",
|
|
ntohs(ep->le_header),
|
|
etheraddr_string(ep->h_source),
|
|
etheraddr_string(ep->h_dest),
|
|
etherproto_string(ep->h_type),
|
|
length);
|
|
}
|
|
|
|
/*
|
|
* This is the top level routine of the printer. 'p' is the points
|
|
* to the ether header of the packet, 'h->tv' is the timestamp,
|
|
* 'h->length' is the length of the packet off the wire, and 'h->caplen'
|
|
* is the number of bytes actually captured.
|
|
*/
|
|
void
|
|
lane_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
|
|
{
|
|
int caplen = h->caplen;
|
|
int length = h->len;
|
|
struct lecdatahdr_8023 *ep;
|
|
u_short ether_type;
|
|
u_short extracted_ethertype;
|
|
|
|
ts_print(&h->ts);
|
|
|
|
if (caplen < sizeof(struct lecdatahdr_8023)) {
|
|
printf("[|lane]");
|
|
goto out;
|
|
}
|
|
|
|
if (eflag)
|
|
lane_print(p, length);
|
|
|
|
/*
|
|
* 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 -= sizeof(struct lecdatahdr_8023);
|
|
caplen -= sizeof(struct lecdatahdr_8023);
|
|
ep = (struct lecdatahdr_8023 *)p;
|
|
p += sizeof(struct lecdatahdr_8023);
|
|
|
|
ether_type = ntohs(ep->h_type);
|
|
|
|
/*
|
|
* Is it (gag) an 802.3 encapsulation?
|
|
*/
|
|
extracted_ethertype = 0;
|
|
if (ether_type < ETHERMTU) {
|
|
/* Try to print the LLC-layer header & higher layers */
|
|
if (llc_print(p, length, caplen, ep->h_source, ep->h_dest,
|
|
&extracted_ethertype) == 0) {
|
|
/* ether_type not known, print raw packet */
|
|
if (!eflag)
|
|
lane_print((u_char *)ep, length + sizeof(*ep));
|
|
if (extracted_ethertype) {
|
|
printf("(LLC %s) ",
|
|
etherproto_string(htons(extracted_ethertype)));
|
|
}
|
|
if (!xflag && !qflag)
|
|
default_print(p, caplen);
|
|
}
|
|
} else if (ether_encap_print(ether_type, p, length, caplen,
|
|
&extracted_ethertype) == 0) {
|
|
/* ether_type not known, print raw packet */
|
|
if (!eflag)
|
|
lane_print((u_char *)ep, length + sizeof(*ep));
|
|
if (!xflag && !qflag)
|
|
default_print(p, caplen);
|
|
}
|
|
if (xflag)
|
|
default_print(p, caplen);
|
|
out:
|
|
putchar('\n');
|
|
}
|