+++ /dev/null
-#!/usr/bin/perl
-# (C)2002 by IBM Corporation, published under terms of the GPL V2
-# Author: Holger Smolinski <smolinsk@de.ibm.com>
-# this file is a wrapper around tcpdump, which provides the capability
-# for debugging qeth and/or HiperSocket(TM) network interfaces under
-# Linux for S/390 and zSeries. tcpdump Syntax is preserved.
-# Bugs: When the input pipe ends the process is not stopped.
-
-use Getopt::Std;
-
-my $incmd,$outcmd;
-
-getopts ("adeflnNOpqRStuvxXc:C:F:i:m:r:s:T:w:E:",\%options);
-
-# Check which options to replace for the reader process
-if ( defined($options{'r'}) ) {
- $incmd = "cat $options{'r'}";
- $filter_out = 1;
-} else {
- $incmd = "tcpdump -l -w -";
- $filter_out = 0;
- if ( defined($options{'i'}) ) {
- $incmd .= " -i ".$options{'i'};
- delete $options{'i'}; # remove -i option from option list
- }
- foreach $key (@ARGV) {
- $incmd .= " $key";
- }
-}
-
-$outcmd = "tcpdump -r -";
-# Rebuild arglist for the writer process
-delete $options{'r'}; # remove -r option from option list
-foreach $key (keys %options) {
- if ((index "adeflnNOpqRStuvxX",$key) >= 0 ) {
- $outcmd .= " -$key";
- } else {
- $outcmd .= " -$key $options{$key}";
- }
- if ( $filter_out == 1 ) {
- foreach $key (@ARGV) {
- $outcmd .= " $key";
- }
- }
-}
-
-open READER,"$incmd|" or die "Cannot spawn reader command $incmd";
-open WRITER,"|$outcmd" or die "Cannot spawn writer command $outcmd";
-
-sysread READER,$filehdr,24 or die "Cannot read file header";
-($magic,$version_major,$version_minor,$thiszone,$sigfigs,$snaplen,$linktype) =
- unpack("ISSIIII",$filehdr);
-$snaplen += 14;
-$filehdr = pack ("ISSIIII",($magic,$version_major,$version_minor,$thiszone,$sigfigs,$snaplen,$linktype));
-syswrite WRITER,$filehdr,24;
-
-$etherheaderip6 = pack ("IIIS",(0,0,0,0x8dd));
-$etherheaderip4 = pack ("IIIS",(0,0,0,0x800));
-
-while ( 1 ) {
- $hdrd = 0;
- do {$hdrd += sysread READER, $pkthdr, 16-$hdrd, $hdrd; } while ($hdrd < 16);
- ($seconds,$usecs,$caplen,$len) = unpack ("IIII",$pkthdr);
- $hdrd = 0;
- do {$hdrd += sysread READER, $packet,$caplen-$hdrd, $hdrd; } while ($hdrd < $caplen);
- $paktype = unpack("C",$packet);
- if ( $paktype & 0xf0 == 0x60 ) {
- $caplen += 14;
- $len += 14;
- $header = $etehrheaderip6;
- } elsif ($paktype >= 0x45 && $paktype <= 0x4f ) {
- $caplen += 14;
- $len += 14;
- $header = $etherheaderip4;
- } else {
- $header = "";
- }
- $pkthdr = pack ("IIII",($seconds,$usecs,$caplen,$len));
- syswrite WRITER,"$pkthdr$header$packet",16+$caplen;
-}