#!/usr/bin/perl
#
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
# 	Yokogawa Electric Corporation.
# All rights reserved.
# 
# Redistribution and use of this software in source and binary
# forms, with or without modification, are permitted provided that
# the following conditions and disclaimer are agreed and accepted
# by the user:
# 
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with
#    the distribution.
# 
# 3. Neither the names of the copyrighters, the name of the project
#    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.
# 
# 4. No merchantable use may be permitted without prior written
#    notification to the copyrighters.
# 
# 5. The copyrighters, the project and the contributors may prohibit
#    the use of this software at any time.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHTERS, THE PROJECT AND
# CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING
# BUT NOT LIMITED THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.  IN NO EVENT SHALL THE
# COPYRIGHTERS, THE PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# $TAHI: ct/icmp.p2/Err_Condition_Time_Exc.seq,v 1.5 2005/04/11 08:58:38 akisada Exp $
#----------------------------------------------------------------------

BEGIN { $V6evalTool::TestVersion = '$Name: V6LC_P2_1_4_6 $'; }
use V6evalTool;
use icmp;

$IF = Link0;

%pktdesc = (
    echo_request_1st_link_local => 'Send 1st Fragmented Echo Request (Link-local address)',
    echo_request_2nd_link_local => 'Send 2nd Fragmented Echo Request (Link-local address)',
    echo_reply_link_local_1024  => 'Receive Echo Reply (Link-local address)',
    echo_request_1st		=> 'Send 1st Fragmented Echo Request',
    time_exceeded		=> 'Receive Time Exceeded (fragment reassembly)',
);

#----------------------------------------------------------------------
# Initialization
#----------------------------------------------------------------------

vLogHTML("<FONT SIZE=\"+1\">Initialization</FONT><BR>");

vCapture($IF);

$ret = setup("default_RA");
if ($ret == $icmp::subFail){
	goto error;
}

#----------------------------------------------------------------------
# check fragment reassembly.
#----------------------------------------------------------------------


vLogHTML('<B>Begin check fragment reassembly</B>');

vSend($IF, echo_request_1st_link_local);
vSend($IF, echo_request_2nd_link_local);

#%ret = vRecv($IF, $icmp::wait_reply, 0, 0, echo_reply_link_local_1024);
%ret = icmp_vRecv($IF, $icmp::wait_reply, 0, 0, echo_reply_link_local_1024);

if ($ret{status} == 0 && $ret{recvFrame} eq 'echo_reply_link_local_1024') {
	vLogHTML('OK<BR>');
}
else {
	
	vLogHTML('<FONT COLOR="#FF0000">Not replied.</FONT><BR>');
	goto error;
};

vLogHTML('<B>End check</B><P>');

#----------------------------------------------------------------------
# Test
#----------------------------------------------------------------------

vLogHTML("<FONT SIZE=\"+1\">Test</FONT><BR>");

vSend($IF, echo_request_1st);

#%ret = vRecv($IF, $icmp::wait_time_exc, 0, 0, time_exceeded);
%ret = icmp_vRecv($IF, $icmp::wait_time_exc, 0, 0, time_exceeded);

if ($ret{status} != 0) {
	vLog("TN do not receive ICMPv6 error message from NUT");
	vLog("OK");	
	cleanup();
	vStop($IF);
	exit($V6evalTool::exitPass);
}
elsif ($ret{recvFrame} eq 'time_exceeded') {
	vLogHTML('<FONT COLOR="#FF0000">TN receive ICMPv6 error message from NUT</FONT><BR>');
	goto error;
}
else {
	vLogHTML('<FONT COLOR="#FF0000">TN receive unexpected packets from NUT</FONT><BR>');
	goto error;
};


error:

vLogHTML('<FONT COLOR="#FF0000">FAIL</FONT><BR>');
cleanup();
vStop($IF);
exit($V6evalTool::exitFail);


#----------------------------------------------------------------------

__END__

=head1 NAME

	Err_Condition_Time_Exc.seq - check Message Processing Rules (ICMPv6
	Time Exceeded)

=head1 TARGET

	Host/Router

=head1 SYNOPSIS

	Err_Condition_Time_Exc.seq [-tooloption ...] -p Err_Condition_Time_Exc_*.def

=head1 INITIALIZATION

	Before starting test, check NUT's fragment reassembly function.
	If the NUT is a host, send a Router Advertisment.
	If the NUT is a router, configure a default route with TN as the next hop.
	And make state of Neighbor Cashe Entry for TN's addresses reachable.

=head1 TEST PROCEDURE

	This test verifies that the message processing rule,
	
	An ICMPv6 error message MUST NOT be sent as a result of
	receiving:

	a packet whose source address does not uniquely identify
	a single node -- e.g., the IPv6 Unspecified Address, an
	IPv6 multicast address, or an address known by the ICMP
	message sender to be an IPv6 anycast address.


	TN			NUT

	---------------------------

	1.
	 === fragmented (1st) packet  ===>
		src address : does not identify a single node uniquely
		dst address : NUT link local address
             
	2.
	<< JUDGEMENT >>

	 <=== No packet  ===
			or
	 <=== ICMPv6  Time Exceeded ===
             Code is 1

=head1 JUDGEMENT

	<< PASS >>
		NUT do not send ICMPv6 Time Exceeded.
		

	<< FAIL >>	
		NUT send ICMPv6 Time Exceeded.

=cut

# =head1 REFERENCE
# 
# RFC2463
# 2.4 Message Processing Rules
# 
#    Implementations MUST observe the following rules when processing
#    ICMPv6 messages (from [RFC-1122]):
# 
# =begin html
# <pre>
#     <b>(e) An ICMPv6 error message MUST NOT be sent as a result of
#         receiving:</b><br>
#          (e.1) an ICMPv6 error message, or<br>
#          <b>(e.2) a packet destined to an IPv6 multicast address (there are
#                two exceptions to this rule: (1) the Packet Too Big
#                Message - Section 3.2 - to allow Path MTU discovery to
#                work for IPv6 multicast, and (2) the Parameter Problem
#                Message, Code 2 - Section 3.4 - reporting an unrecognized
#                IPv6 option that has the Option Type highest-order two
#                bits set to 10)</b>, or<br>
#          (e.3) a packet sent as a link-layer multicast, (the exception
#                from e.2 applies to this case too), or<br>
#          (e.4) a packet sent as a link-layer broadcast, (the exception
#                from e.2 applies to this case too), or<br>
#          (e.5) a packet whose source address does not uniquely identify
#                a single node -- e.g., the IPv6 Unspecified Address, an
#                IPv6 multicast address, or an address known by the ICMP
#                message sender to be an IPv6 anycast address.
# </pre>
# 
# =end html
# 

=pod

=head1 REFERENCE

=begin html
<BLOCKQUOTE>
<PRE>
RFC 2463 - ICMPv6 (ICMP for IPv6)
</PRE>
</BLOCKQUOTE>

=end html

=head1 SEE ALSO

	  perldoc V6evalTool

=cut