#!/usr/bin/perl
#
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
# 	Yokogawa Electric Corporation.
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#    notice, this list of conditions and the following disclaimer.
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#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with
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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.
# 
# 4. No merchantable use may be permitted without prior written
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# 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
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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# $TAHI: dhcpv6.p2/rfc3736/S_RFC3736_5.3_SLDHCPDNSOP.seq,v 1.2 2007/02/20 08:23:59 hide Exp $
########################################################################
BEGIN { $V6evalTool::TestVersion = '$Name: DHCPv6_Self_Test_P2_1_0_14 $';
}

use strict;
use V6evalTool;

use lib '../.';
use DHCPv6_common;
use Server_pktdesc;

dhcpExitNS if ChkFuncSupport('STATELESSDHCP');

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

vLogHTML('<B>==== NUT Initialization ====</B><BR>');
my $IF0 = "Link0";
#initial NUT config parameters,
my %NUT_Server_Config = (
	'if_nut0'=> "$V6evalTool::NutDef{Link0_device}",
	'init_opcode' => "vRemote(\"dhcp6s.rmt\", \"start\",\"dns=3ffe:501:ffff:100:200:ff:fe00:3f3e\",\"stateless\",\"link0=$V6evalTool::NutDef{Link0_device}\")"
);

dhcpSvrInitS(\%NUT_Server_Config);
vClear($IF0);

# 1 send DHCPv6 Information-request  Message
$CID_OPTION = "opt_CID_LLT_client1";
$OptionRequest_OPTION = "opt_ORO_dns_servers";
#$OptionRequest_OPTION = "opt_ORO_dns_servers_statuscode";
$ElapsedTime_OPTION = "opt_ElapsedTime";
my ($ret1, %ireq1) = send_information_request($IF0, "information_request_client1_to_alldhcp", undef, "");
if (0 != $ret1){
	dhcpExitFail();
}

# wait for DHCPv6 Reply Message
my ($ret2, %rep2) = wait_for_reply($IF0, 5);
if (0 != $ret2){
	dhcpExitFail();
}

# check Options
if (0 != options_exist(\%rep2, ($CMP_DNS_SVR))){
	dhcpExitError("<B>The expected option is not exist</B><BR>");
}

# compare Options
#if (0 != compare_options(\%ireq1, \%rep2, ($CMP_CID|$CMP_TRANS_ID))){
#	dhcpExitError("<B>The value of option is different from expected value.</B><BR>");
#}

# check unicast address
#if ( $rep2{"Frame_Ether.Packet_IPv6.Hdr_IPv6.DestinationAddress"} != $ireq1{"Frame_Ether.Packet_IPv6.Hdr_IPv6.SourceAddress"}) {
#        dhcpExitError("DHCPv6 Server not send Reply message via unicast.");
#}

my $option_base = "Frame_Ether.Packet_IPv6.Upp_UDP.Udp_DHCPv6_Reply.Opt_DHCPv6_DNS_Servers";
my $option_code = $option_base."."."Code";
my $option_len = $option_base."."."Length";
my $option_addr = $option_base."."."Address";


if(defined $rep2{$option_base}){
	vLogHTML("<B> DNS Recursive Name Server option Code = $rep2{$option_code} <B><BR>");
	vLogHTML("<B> DNS Recursive Name Server option Length = $rep2{$option_len} <B><BR>");
	vLogHTML("<B> DNS Recursive Name Server option Address = $rep2{$option_addr} <B><BR>");
}
else{
	vLogHTML("<B> NO DNS Recursive Name Server option <B><BR>");
	dhcpExitFail;
}
#-------------------------------------------------------------------
vLogHTML("<B><FONT COLOR=#006666>The DNS recursive name servers Option in Reply Message is correct</FONT></B><BR>");
#-------------------------------------------------------------------

vClear($IF0);
vStop($IF0);
dhcpExitPass();
#NOTREACHED

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

=head1 NAME

  S_RFC3736_5.3_SLDHCPDNSOP.seq - Stateless DHCP service message exchange with DNS Recursive Name Servers option

=head1 TARGET

  Server

=head1 SYNOPSIS

=begin html
 <PRE>
 <A HREF="./S_RFC3736_5.3_SLDHCPDNSOP.seq">S_RFC3736_5.3_SLDHCPDNSOP.seq </A>[-tooloption ...]
 -pkt <A HREF="./S_RFC3736_5.3_SLDHCPDNSOP.def">S_RFC3736_5.3_SLDHCPDNSOP.def </A>
 -tooloption: v6eval tool option
See Also <A HREF="./DHCPv6.def"> DHCPv6.def </A>
 </PRE>

=head1 INITIALIZATION

=begin html
  <UL>
  <LI><STRONG>Network Topology</STRONG></LI>
  </UL>
  <PRE>
          TN(Client1)  
             |
Link0 -------+-----------+--------------- 3ffe:501:ffff:100::/64
                         |
                       NUT(Server1)
  </PRE>
  <UL>
      <LI><STRONG>Verification Points</STRONG></LI>
<PRE>
        <li>DNS Recursive Name Server option 
<ul>
      <LI>option-code</LI>
      <B>OPTION_DNS_SERVERS (23)</B>
      <LI>option-len</LI>
      Length of the list of DNS recursive name servers in octets; 
      <B>must be a multiple of 16</B>
      <LI>DNS-recursive-name-server</LI>
      Any(IPv6 address of DNS recursive name server)
    </ul>
</PRE>
  </UL>
  <UL>
      <LI><STRONG>Configuration</STRONG></LI>
      <UL>
      <PRE>
      Option Request option in the Information-request message
      <LI>option-code</LI>
      <B>OPTION_ORO(6)</B>
      <LI>option-len</LI>
      Any
      <LI>requested-option-code-1</LI>
      <B>OPTION_DNS_SERVERS(23)</B>
      </PRE>
      </UL>
	<BLOCKQUOTE>
	<TABLE BORDER>
	<TR>
	<TD><TT>Device Name</TT></TD>
	<TD><TT>Device Type</TT></TD>
	<TD><TT>I/F</TT></TD>
	<TD><TT>Assigned Prefix</TT></TD>
	<TD><TT>Link Local Addr</TT></TD>
	<TD><TT>MAC Addr</TT></TD>
	</TR>
	<TR>
	<TD><TT>Server1</TT></TD>
	<TD><TT>NUT</TT></TD>
	<TD><TT>Link0</TT></TD>
	<TD><TT>3ffe:501:ffff:100::/64</TT></TD>
	<TD><TT>NUT's Linklocal address</TT></TD>
	<TD><TT>NUT's MAC address</TT></TD>
	</TR>
	<TR>
	<TD><TT>Client1</TT></TD>
	<TD><TT>TN</TT></TD>
	<TD><TT>Link0</TT></TD>
	<TD><TT>3ffe:501:ffff:100::/64</TT></TD>
	<TD><TT>fe80::200:ff:fe00:a2a2</TT></TD>
	<TD><TT>00:00:00:00:a2:a2</TT></TD>
	</TABLE>
	</BLOCKQUOTE>
	</UL>
</UL>

=end html

=head1 TEST PROCEDURE

=begin html
<PRE>
       NUT     TN
        |       | 
        |       | initialize NUT (as a stateless DHCPv6 Server)
        |       | 
        | <---- | Information-request(w/ Option Request option)
        | ----> | Reply(w/ DNS Recursive Name Server option)
        |       | 
        |       | 
</PRE>

=end html

=head1 JUDGEMENT

<PRE>
(*1)PASS:  NUT returns Reply message with DNS Recursive Name Server option to the TN's Information-request message.
</PRE>

=head1 TERMINATION

  N/A

=head1 REFERENCE

=begin html
<PRE>
   see also RFC3646
   3. DNS Recursive Name Server option

   see also RFC3736
   5.3. Options Used for Configuration Information
</PRE>

=end html

=head1 SEE ALSO

  perldoc V6evalTool

=cut