#!/usr/bin/perl
#
#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: C_RFC3736_basic.seq,v 1.4 2008/08/29 06:26:00 ozoe Exp $
###############################################################################
BEGIN{
	$V6evalTool::TestVersion = '$Name: DHCPv6_Self_Test_P2_1_0_16 $';
}
use strict;
use V6evalTool;

use lib '../.';
use DHCPv6_common;
use Client_pktdesc;

dhcpExitNS  if ChkFuncSupport('STATELESSDHCP');

#--------------------------------------------------------------#
# Initialization variables
#--------------------------------------------------------------#
my $IF0_NUT = $V6evalTool::NutDef{"Link0_device"};
my $IF0 = "Link0";
my $timeout = 20;
my $dstport = 0;
vCapture($IF0);

#--------------------------------------------------------------#
# manuallly address configuration 
#--------------------------------------------------------------#
my $ret = initial_ra_w_ping($IF0,'ra_server2_to_all_addr_assign');
if($ret != 0){
	vLogHTML('<FONT COLOR="#FF0000">Global Address of NUT is not assigned by RA!</FONT><BR>');
	dhcpExitFail;
}
my $ret = vRemote("dhcp6c.rmt", "start", "inforeq", "dns", "link0=$IF0_NUT");
if($ret != 0) {
	vLogHTML('<FONT COLOR="#FF0000">Cannot Initialize DHCPv6 Client program.</FONT><BR>');
	dhcpExitFail;
};
#--------------------------------------------------------------#
# 1. Capture Information-request
#--------------------------------------------------------------#
my ($retinf, %inf) = wait_for_information_request($IF0, $timeout);
if($retinf != 0){
	dhcpExitFail;
}
#--------------------------------------------------------------#
# 2. send Reply to Information-request
#--------------------------------------------------------------#
$SID_OPTION = "opt_SID_LLT_server1";
$DNS_SVR_OPTION = "opt_DNS_Name_Server1";
my ($retrep, %rep) = send_reply($IF0, "reply_server1_to_nut", \%inf, "");
if($retrep != 0){
 	dhcpExitFail;
}

my $system=$V6evalTool::NutDef{System};
#---------------------------------------------------------------#
# NUT ping any DNS name
#---------------------------------------------------------------#
my $dns_name = "dhcpv6.test.example.com";

if($system eq 'manual'){
	$ret = vRemote("ping6.rmt", "addr=$dns_name", "if=$IF0_NUT");
	if($ret != 0){
		vLogHTML('<FONT COLOR="#FF0000">Ping6 DNS Name Fail!</FONT><BR>');
		dhcpExitFail;
	}
#--------------------------------------------------------------#
# 3. Capture NS from NUT to DNS Name Server option 
#--------------------------------------------------------------#
	my %retStatus = vRecv($IF0, 30, 0, 0, 'ns_nut_to_DNS','dns_squery');
	if($retStatus{"status"} != 0 ){
		vLogHTML('<FONT COLOR="#FF0000">Cannot get DNS Query message!</FONT><BR>');
		dhcpExitFail;
	}
	if($retStatus{recvFrame} eq 'dns_squery'){
		vLogHTML("<B>DNS server received DNS query.</B><BR>");		
	}elsif($retStatus{recvFrame} eq 'ns_nut_to_DNS'){
		vSend($IF0, 'na_dns_to_nut');
		my %ret = vRecv($IF0, 5, 0, 0, 'dns_squery');
		if ( $ret{"status"} != 0 ) {
			vLogHTML('<FONT COLOR="#FF0000">Cannot get DNS Query message!</FONT><BR>');
			dhcpExitFail;
		}
	}
}else{
	$ret = vRemoteAsync("ping6.rmt", "addr=$dns_name", "if=$IF0_NUT");
	if($ret != 0){
		vLogHTML('<FONT COLOR="#FF0000">Ping6 DNS Name Fail!</FONT><BR>');
		vRemoteAsyncWait();
		dhcpExitFail;
	}
#--------------------------------------------------------------#
# 3. Capture NS from NUT to DNS Name Server option 
#--------------------------------------------------------------#
	my %retStatus = vRecv($IF0, 30, 0, 0, 'ns_nut_to_DNS','dns_squery');
	if($retStatus{"status"} != 0 ){
		vLogHTML('<FONT COLOR="#FF0000">Cannot get DNS Query message!</FONT><BR>');
		vRemoteAsyncWait();
		dhcpExitFail;
	}
	if($retStatus{recvFrame} eq 'dns_squery'){
		vLogHTML("<B>DNS server received DNS query.</B><BR>");		
	}elsif($retStatus{recvFrame} eq 'ns_nut_to_DNS'){
		vSend($IF0, 'na_dns_to_nut');
		my %ret = vRecv($IF0, 5, 0, 0, 'dns_squery');
		if ( $ret{"status"} != 0 ) {
			vLogHTML('<FONT COLOR="#FF0000">Cannot get DNS Query message!</FONT><BR>');
			vRemoteAsyncWait();
			dhcpExitFail;
		}
	}
	vRemoteAsyncWait();
}
vClear($IF0);
vStop($IF0);
dhcpExitPass;
###############################################################################
__END__

=head1 NAME 

  C_RFC3736_basic.seq - Basic message exchange

=head1 TARGET

  Client

=head1 SYNOPSIS

=begin html
<PRE>
  <A HREF="./C_RFC3736_basic.seq"> C_RFC3736_basic.seq</A> [-tooloption...] <BR>  -pkt  <A HREF="./C_RFC3736_basic.def"> C_RFC3736_basic.def</A> <BR>  -tooloption : v6eval tool option
<BR>
  See Also <A HREF="../DHCPv6.def"> DHCPv6.def </A> 
</PRE>

=end html

=head1 INITIALIZATION

=begin html
  <ul>
  <li><STRONG>Network Topology</STRONG></li> 
    <PRE>
          NUT(Client) 3ffe:501:ffff:100::abcd            
          |                       
          |                       
Link0   --+--------+------------+---------- 3ffe:501:ffff:100::/64
                   |            |
                   |            |
                   TN(Server)   TN(DNS Server)
		                3ffe:501:ffff:100:200:ff:fe00:3f3e
    </PRE>
  </ul>  
  <ul>
  <li><STRONG>Verification Points</STRONG></li><br>
    <PRE>
   Clients and servers exchange DHCP messages correctly. 
    </PRE>
  </ul>
  <ul>  
  <li><STRONG>Configurations</STRONG></li><br>
   <BR>
    <TABLE BORDER="1">
    <TR>
    <TD><TT>Device Name</TT></TD>
    <TD><TT>Device Type</TT></TD>
    <TD><TT>Interface</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>Client</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>Server</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:a1a1</TT></TD>
    <TD><TT>00:00:00:00:a1:a1</TT></TD>
    </TR>
    </TABLE>
  </ul>

=end html

=head1 TEST PROCEDURE

=begin html
<PRE>
<BR>
       NUT      TN
        |       |
        |       | NUT has been configured with IPv6 address,
        |       | and request stateless DHCPv6 service
        |       |
        | ----> |<B>Information-request</B> w/Option Request Option(1*)
        | <---- |<B>Reply</B> w/DNS Name Server Option/3ffe:501:ffff:100:200:ff:fe00:a1a1
        |       |
        |       | NUT Ping DHCPv6.TEST.EXAMPLE.COM
        |       |
        | ----> |<B>DNS Standard Query</B> (3*)
        |       |
<BR>
</PRE>

=end html

=head1 JUDGEMENT

=begin html
<PRE>
<BR>  
  (1*)PASS: TN receives Information-request message.
  (3*)PASS: NUT transmits SQUERY message.
</PRE>

=end html

=head1 TERMINATION

=begin html
<PRE>
  N/A
</PRE>

=end html

=head1 REFERENCE

=begin html
<PRE>
  Also see RFC3315 Section 17.1.4, 18.1.8 and 19.4.5
  Also see RFC3736
</PRE>

=end html

=head1 SEE ALSO

=begin html
<PRE>
<BR>
  perldoc  V6evalTool
<BR>
</PRE>

=end html