#!/usr/bin/perl
#
# Copyright (C) 1999,2000 Yokogawa Electric Corporation and
#                         YDC Corporation.
# All rights reserved.
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# Redistribution and use of this software in source and binary
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# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
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#    which is related to this software (hereinafter referred to as
#    "project") nor the names of the contributors may be used to
#    endorse or promote products derived from this software without
#    specific prior written permission.
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#    the use of this software at any time.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHTERS, THE PROJECT AND
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# FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.  IN NO EVENT SHALL THE
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# $Id: BadIPv6Len.seq,v 1.1.1.1 2000/10/31 22:39:47 sekiya Exp $
#
######################################################################
BEGIN {
	$V6evalTool::TestVersion = '$Name:  $';
}

use V6evalTool;
sub ping_one();

%pktdesc = (
	echo_request	=> 'Send Echo Request (but invalid lentgh)',
	echo_request	=> 'Send Echo Request',
	echo_reply	=> 'Recv Echo Reply (Link-Local Address)',
	ns		=> 'Recv Neighbor Solicitation',
	na		=> 'Send Neighbor Advertisement',
);

$IF=Link0;
$nodes=1;

#----- start Capturing
vCapture($IF);

#----- test
vSend($IF, echo_request_wrong_v6len);
vRecv($IF, 5, 0, 0);  # dummy recv

#-----
ping_one();

vLogHTML('OK');
exit $V6evalTool::exitPass;
end;

sub ping_one(){
	vSend($IF, echo_request);

	%ret = vRecv($IF, 5, 0, 0, ns, echo_reply);
	if ($ret{status} != 0) {
		vLogHTML('No response from NUT<BR>');
		vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
		exit $V6evalTool::exitFail;
	}

	if ($ret{recvFrame} eq 'ns') {
		vSend($IF, na);

		%ret = vRecv($IF, 5, 0, 0, echo_reply);
		if ($ret{status} != 0) {
			vLogHTML('Cannot receive Echo Reply<BR>');
			vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
			exit $V6evalTool::exitFail;
		}
	}

	if ($ret{recvFrame} ne 'echo_reply') {
		vLogHTML('Cannot receive Echo Reply<BR>');
		vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
		exit $V6evalTool::exitFail;
	}
}


######################################################################
__END__

=head1 NAME

BadIPv6Len - Bad IPv6 Payload Length

=head1 TARGET

Host and Router

=head1 SYNOPSIS

B<BadIPv6Len.seq>

=head1 INITIALIZATION

NONE

=head1 TEST PROCEDURE

This is one of robustness tests for bad length field.

The test check that payload length field in IPv6 header
processing.

  1. Send bad Echo Request
  2. Wait 5 sec.
  3. Send Echo Request
  4. If NS received then send NA, and wait Echo Reply again
  5. Receive Echo Reply


  Bad Echo Request Data is:

=over 4
        IPv6 Header
            Version            = 6
            Traffic Class      = 0
            FlowLabel          = 0
            PayloadLength      = 100 (It' bad. True value is 16)
            NextHeader         = 58 (ICMP)
            HopLimit           = 64
            SourceAddress      = Tester Link Local Address
            DestinationAddress = Target Link Local Address

        ICMP Echo Request
            Type           = 128 (Echo Request)
            Code           = 0
            Checksum       = (auto)
            Identifier     = 0xffff
            SequenceNumber = 1
            PayloadData    = {1,2,3,4,5,6,7,8}

=back

=head1 JUDGMENT

  PASS : echo reply packet received.

  FAIL : don't received echo reply packet.

=head1 TERMINATION

NONE


=head1 SEE ALSO

perldoc V6evalTool

=cut