#!/usr/bin/perl
#
# $Name: V6LC_4_0_1 $
#
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
# 	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.
#
# $Id: HHO_MSB10_IN.seq,v 1.7 2006/02/02 02:32:18 akisada Exp $
#
######################################################################
BEGIN {
	$V6evalTool::TestVersion = '$Name: V6LC_4_0_1 $';
}

use V6evalTool;
use CommonSPEC;
use lib '../';
use AdvancedFunctionality;

sub cleanup_tunnel($);

if ($V6evalTool::NutDef{'Type'} ne 'router') {
    vLogHTML("This test is for the router only<BR>");
    exit($V6evalTool::exitRouterOnly);
}

unless($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES) {
	my $srcaddr   =  vMAC2LLAddr($V6evalTool::NutDef{'Link0_addr'});
	   $srcaddr   =~ s/fe80::/3ffe:501:ffff:100:/;

	my $dstaddr   =  vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
	   $dstaddr   =~ s/fe80::/3ffe:501:ffff:110:/;

	my $insrcaddr =  vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
	   $insrcaddr =~ s/fe80::/3ffe:501:ffff:100:/;

	my $indstaddr =  vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
	   $indstaddr =~ s/fe80::/3ffe:501:ffff:101:/;

	my $gateway   =  vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});

	my $Link0_device = $V6evalTool::NutDef{'Link0_device'};

	if(vRemote('route.rmt', 'cmd=add',
		"prefix=3ffe:501:ffff:110::", 'prefixlen=64',
		"gateway=$gateway", "if=$Link0_device")) {

		vLogHTML('<FONT COLOR="#FF0000">route.rmt: '.
			'Can\'t configure the route.</FONT><BR>');

		exit($V6evalTool::exitFatal);
	}

	if(vRemote('tunnel.rmt',
		'if=0 '.
		'prefixlen=64 '.
		'routeprefixlen=64 '.
		'addrfamily=inet6 '.
		"prefix=3ffe:501:ffff:101:: ".
		"srcaddr=$srcaddr ".
		"dstaddr=$dstaddr ".
		"insrcaddr=$insrcaddr ".
		"indstaddr=$indstaddr ")) {

		vLogHTML('<FONT COLOR="#FF0000">tunnel.rmt: '.
			'Can\'t configure the tunnel.</FONT><BR>');

		exit($V6evalTool::exitFatal);
	}
}

$pktdesc{'echo_request_ex_to_link0'}
	= 'Send Echo Request (Unrecognized Option:Type 10) to link0';
$pktdesc{'icmperr_from_link0'}
	= 'Recv ICMP Error '.
		'(Parameter Problem, unrecognized IPv6 option encountered) '.
		'from link0';

$endStatus = $V6evalTool::exitPass;

######################################################################

$IF0 = 'Link0';
$IF1 = 'Link1';

vCapture($IF0);

if($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES) {
	vCapture($IF1);
}

#----- test
vSend($IF0, 'echo_request_ex_to_link0');
%ret = nd_vRecv_IN($IF0, $CommonSPEC::wait_reply, 0, 0, 'icmperr_from_link0');

if ($ret{'status'} == 0) {
	vLogHTML('OK<BR>');
} else {
	vLogHTML('Cannot receive ICMP Error message<BR>');
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT><BR>');
	$endStatus = $V6evalTool::exitFail;
}
#----- end test

if($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES) {
	$ret = cleanup($IF0, $IF1);
} else {
	$ret = cleanup_tunnel($IF0);
}
vStop($IF0);

if($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES) {
	vStop($IF1);
}

if ($ret == $CommonSPEC::Success) {
	exit($endStatus);
} else {
	exit($V6evalTool::exitFatal);
}



#----------------------------------------------------------------------#
sub
cleanup_tunnel($)
{
	my ($link) = @_;

	my $ret = cleanup($IF0);

	my $srcaddr   =  vMAC2LLAddr($V6evalTool::NutDef{'Link0_addr'});
	   $srcaddr   =~ s/fe80::/3ffe:501:ffff:100:/;

	my $dstaddr   =  vMAC2LLAddr($V6evalTool::NutDef{'Link0_addr'});
	   $dstaddr   =~ s/fe80::/3ffe:501:ffff:110:/;

	my $insrcaddr =  vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
	   $insrcaddr =~ s/fe80::/3ffe:501:ffff:100:/;

	my $indstaddr =  vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
	   $indstaddr =~ s/fe80::/3ffe:501:ffff:101:/;

	my $gateway   =  vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});

	my $Link0_device = $V6evalTool::NutDef{'Link0_device'};

	if(vRemote('route.rmt', 'cmd=delete',
		"prefix=3ffe:501:ffff:110::", 'prefixlen=64',
		"gateway=$gateway", "if=$Link0_device")) {
 
		vLogHTML('<FONT COLOR="#FF0000">route.rmt: '.
			'Can\'t configure the route.</FONT><BR>');

		exit($V6evalTool::exitFatal);
	}

	if(vRemote('tunnel.rmt',
		'if=0 '.  
		'deletetunnel '.
		'prefixlen=64 '.   
		'routeprefixlen=64 '.
		'addrfamily=inet6 '.
		"prefix=3ffe:501:ffff:101:: ".
		"srcaddr=$srcaddr ".
		"dstaddr=$dstaddr ".
		"insrcaddr=$insrcaddr ".
		"indstaddr=$indstaddr ")) {
 
		vLogHTML('<FONT COLOR="#FF0000">tunnel.rmt: '.
			'Can\'t configure the tunnel.</FONT><BR>');

		exit($V6evalTool::exitFatal);
	}

	return($ret);
}



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

=head1 NAME

  HHO_MSB10_IN - Options Processing, Hop-by-Hop Options Header - Intermediate Node (Most Significant Bits 10, unicast destination)

=head1 TARGET

  Router

=head1 SYNOPSIS

=begin html
<PRE>
  <A HREF="./HHO_MSB10_IN.seq">HHO_MSB10_IN.seq</A> [-tooloption ...] -pkt <A HREF="./HHO_MSB10_IN.def">HHO_MSB10_IN.def</A>
    -tooloption : v6eval tool option
</PRE>

=end html

=head1 INITIALIZATION

  None

=head1 TEST PROCEDURE

  Tester                      Target                      Tester
              (Link0)                     (Link1)
    |                           |                           |
    |-------------------------->|                           |
    |       Echo Request        |                           |
    |                           |                           |
    |<--------------------------|                           |
    |   Neighbor Solicitation   |                           |
    |                           |      (no forwarding)      |
    |-------------------------->|                           |
    |   Neighbor Advertisement  |                           |
    |                           |                           |
    |<--------------------------|                           |
    |         ICMP Error        |                           |
    |                           |                           |
    v                           v                           v


  1. Send Echo Request to Link0
  2. Wait ICMP Error or NS on Link0
  3. If NS received then send NA, and wait ICMP Error again
  4. Receive ICMP Error

  Echo Request Data is:

        IPv6 Header
            Version            = 6
            Traffic Class      = 0
            FlowLabel          = 0
            PayloadLength      = 16
            NextHeader         = 0 (Hop-by-Hop Options Header)
            SourceAddress      = Tester Global Address (Link0)
            DestinationAddress = Tester Global Address (Link1)

        Hop-by-Hop Options Header
            NextHeader         = 58 (ICMPv6)
            HeaderExtLength    = 0
            OptionType         = 0x87 (Unrecognized Option, Type 10)
            OptDataLength      = 4
            data               = {0, 0, 0, 0}

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


=head1 JUDGEMENT

  PASS: ICMP Error Received

        IPv6 Header
            Version             = 6
            Traffic Class       = 0
            FlowLabel           = 0
            PayloadLength       = 16
            NextHeader          = 58 (ICMPv6)
            SourceAddress       = Target Global Address (Link0)
            Destination Address = Tester Global Address (Link0)

        ICMP Error
            Type           = 4 (Parameter Problem)
            Code           = 2 (unrecognized IPv6 option encountered)
            Checksum       = (auto)
            Pointer        = 42 (Offset to Option field of HbH Options Header)
            PayloadData    = (Sent Packet)

=cut

# =head1 REFERENCE
# 
# RFC2460
# 
# 4.  IPv6 Extension Headers
# 
#    With one exception, extension headers are not examined or processed
#    by any node along a packet's delivery path, until the packet reaches
#    the node (or each of the set of nodes, in the case of multicast)
#    identified in the Destination Address field of the IPv6 header.
#    There, normal demultiplexing on the Next Header field of the IPv6
#    header invokes the module to process the first extension header, or
#    the upper-layer header if no extension header is present.  The
#    contents and semantics of each extension header determine whether or
#    not to proceed to the next header.  Therefore, extension headers must
#    be processed strictly in the order they appear in the packet; a
#    receiver must not, for example, scan through a packet looking for a
#    particular kind of extension header and process that header prior to
#    processing all preceding ones.
# 
# =begin html
# <PRE>
#    <B>The exception referred to in the preceding paragraph is the Hop-by-
#    Hop Options header, which carries information that must be examined
#    and processed by every node along a packet's delivery path, including
#    the source and destination nodes.  The Hop-by-Hop Options header,
#    when present, must immediately follow the IPv6 header.  Its presence
#    is indicated by the value zero in the Next Header field of the IPv6
#    header.</B>
# </PRE>
# 
# =end html
# 
# 4.2  Options
# 
#    Two of the currently-defined extension headers -- the Hop-by-Hop
#    Options header and the Destination Options header -- carry a variable
#    number of type-length-value (TLV) encoded "options", of the following
#    format:
# 
#       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- - - - - - - - -
#       |  Option Type  |  Opt Data Len |  Option Data
#       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- - - - - - - - -
# 
#       Option Type          8-bit identifier of the type of option.
# 
#       Opt Data Len         8-bit unsigned integer.  Length of the Option
#                            Data field of this option, in octets.
# 
#       Option Data          Variable-length field.  Option-Type-specific
#                            data.
# 
#    The sequence of options within a header must be processed strictly in
#    the order they appear in the header; a receiver must not, for
#    example, scan through the header looking for a particular kind of
#    option and process that option prior to processing all preceding
#    ones.
# 
#    The Option Type identifiers are internally encoded such that their
#    highest-order two bits specify the action that must be taken if the
#    processing IPv6 node does not recognize the Option Type:
# 
#       00 - skip over this option and continue processing the header.
# 
#       01 - discard the packet.
# 
# =begin html
# <PRE>
#       <B>10 - discard the packet and, regardless of whether or not the
#            packet's Destination Address was a multicast address, send an
#            ICMP Parameter Problem, Code 2, message to the packet's
#            ICMP Parameter Problem, Code 2, message to the packet's
#            Source Address, pointing to the unrecognized Option Type.</B>
# </PRE>
# 
# =end html
# 
#       11 - discard the packet and, only if the packet's Destination
#            Address was not a multicast address, send an ICMP Parameter
#            Problem, Code 2, message to the packet's Source Address,
#            pointing to the unrecognized Option Type.
# 
#    The third-highest-order bit of the Option Type specifies whether or
#    not the Option Data of that option can change en-route to the
#    packet's final destination.  When an Authentication header is present
#    in the packet, for any option whose data may change en-route, its
#    entire Option Data field must be treated as zero-valued octets when
#    computing or verifying the packet's authenticating value.
# 
#       0 - Option Data does not change en-route
# 
#       1 - Option Data may change en-route
# 
#    The three high-order bits described above are to be treated as part
#    of the Option Type, not independent of the Option Type.  That is, a
#    particular option is identified by a full 8-bit Option Type, not just
#    the low-order 5 bits of an Option Type.
# 
#    The same Option Type numbering space is used for both the Hop-by-Hop
#    Options header and the Destination Options header.  However, the
#    specification of a particular option may restrict its use to only one
#    of those two headers.
# 
#    Individual options may have specific alignment requirements, to
#    ensure that multi-octet values within Option Data fields fall on
#    natural boundaries.  The alignment requirement of an option is
#    specified using the notation xn+y, meaning the Option Type must
#    appear at an integer multiple of x octets from the start of the
#    header, plus y octets.  For example:
# 
#       2n    means any 2-octet offset from the start of the header.
#       8n+2  means any 8-octet offset from the start of the header,
#             plus 2 octets.
# 
# 
# 4.3  Hop-by-Hop Options Header
# 
#    The Hop-by-Hop Options header is used to carry optional information
#    that must be examined by every node along a packet's delivery path.
#    The Hop-by-Hop Options header is identified by a Next Header value of
#    0 in the IPv6 header, and has the following format:
# 
#     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
#     |  Next Header  |  Hdr Ext Len  |                               |
#     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+                               +
#     |                                                               |
#     .                                                               .
#     .                            Options                            .
#     .                                                               .
#     |                                                               |
#     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
# 
#    Next Header          8-bit selector.  Identifies the type of header
#                         immediately following the Hop-by-Hop Options
#                         header.  Uses the same values as the IPv4
#                         Protocol field [RFC-1700 et seq.].
# 
#    Hdr Ext Len          8-bit unsigned integer.  Length of the Hop-by-
#                         Hop Options header in 8-octet units, not
#                         including the first 8 octets.
# 
#    Options              Variable-length field, of length such that the
#                         complete Hop-by-Hop Options header is an integer
#                         multiple of 8 octets long.  Contains one or more
#                         TLV-encoded options, as described in section
#                         4.2.
# 
# =begin html
# <PRE>
#    <B>The only hop-by-hop options defined in this document are the Pad1 and
#    PadN options specified in section 4.2.</B>
# </PRE>
# 
# =end html
# 

=pod

=head1 REFERENCE

=begin html
<BLOCKQUOTE>
<PRE>
RFC 2460 - IPv6 Specification
</PRE>
</BLOCKQUOTE>

=end html

=head1 SEE ALSO

  perldoc V6evalTool

=cut