#!/usr/bin/perl
#
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
# 	Yokogawa Electric Corporation.
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#    which is related to this software (hereinafter referred to as
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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,
# 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.
# $TINY: RA_wVLT0.seq,v 1.7 2002/03/05 17:13:56 miyata Exp $
# 

########################################################################
BEGIN { $V6evalTool::TestVersion = '$Name: V6LC_4_0_1 $ '; }
use V6evalTool;
use SAA;

#------------------------------------------------------
#----- get sequence arguments
#------------------------------------------------------
$howto_initNUT="none";
$send = "ok";
foreach (@ARGV) {
# How to configure address of NUT?
# sample: boot, ra, manual+_GLOBAL0A0N_UCAST
    /^addrconf=(\S+)/ && do {$SAA::howto_addrconf=$1; next; };

# How to initialize NUT?
# sample: none, DADSuccess_boot, DADFail_boot
    /^init=(\S+)/     && do {$howto_initNUT=$1; next; };

# "none" if send no pakcet to NUT in state DADPostSendNS
# sample: ok, none
    /^send=(\S+)/     && do {$send=$1; next; };

# sequence debug options
# sample: qR
    /^sd=(\S+)/       && do {$seqdebugopt=$1; next; };
    seqERROR("Unknown sequence option '$_'");
}
#------------------------------------------------------

#----- test condition
$IF=Link0;                 # network interface

$max_retry_count = 10;     # retry if NUT state becomes DADPostSendNS
$max_retry_count = 2 if $SAA::sd =~ /q/;    # quick retry
$send_interval  = 1;
	       # 1[sec] time between DAD NS and DAD NS, send to NUT
               #     (RandomDelay is 0-1sec  e.g. default RetransTimer 1000msec)


$DAD_GA = $SAA::DADTransmitsGA ;
$DAD_GA =~ tr/a-z/A-Z/ ;

##########################################################
#----- Check Target Type

$type=$V6evalTool::NutDef{Type};
if($type eq router) {
    vLogHTML("This test is for the host only<BR>");
    exit $V6evalTool::exitHostOnly;
}

if($type ne host) {
    vLogHTML(ndErrmsg("ERROR: $V6evalTool::NutDef{Type}: ".
		      "Unknown target type<BR>"));
    exit $V6evalTool::exitFail;
}

##########################################################
#----- initialize NUT
vLog("*** Target initialization phase ***");
if($V6evalTool::NutDef{System} ne "manual"){ vSleep($SAA::test_interval); }
$rret=vRemote("reboot_async.rmt","","timeout=$SAA::wait_rebootcmd");
vLog("reboot_async.rmt returned status $rret");

#----- start Capturing
vLog("*** Target testing phase ***");
vCapture($IF);

#----- LLA PHASE
#----- Wait DAD NS from NUT or timeout
vLog("TN wait DAD NS(DADNS_from_NUT) from NUT for $SAA::wait_dadns{$SAA::howto_addrconf} [sec],");

%ret1=vRecv($IF,$SAA::wait_dadns{$SAA::howto_addrconf},0,0,DADNS_from_NUT);

if ($ret1{status} != 0){
    vLog("TN wait DAD NS from NUT for $SAA::wait_dadns{$SAA::howto_addrconf}, but NUT had not transmit DAD NS");
    seqNG();
}

#----- RA PHASE
vLog("TN received DAD NS from NUT.");
vLog("OK! Let's go ahead!");
%ret2=vRecv($IF,$SAA::wait_rs,0,0,RS_from_NUT,RS_from_NUT_wSLL);

if ($ret2{status} != 0){
    vLog("Though TN had waited RS from NUT for $SAA::wait_rs,");
    vLog(" NUT seems not to send RS.");
    vLog(" Anyway TN is sending Unsolicited RA (Prefix=Global)");
}else{
    vLog("TN received RS from NUT.");
    vLog("TN is sending RA (Prefix=Global)");
}

vSend($IF, RA_GA0_VLT0);

#----- Wait DAD NS from NUT or timeout
vLog("TN wait DAD NS for Global address from NUT for $SAA::wait_dadns{ra} [sec],");

%ret3=vRecv($IF,$SAA::wait_dadns{ra},0,0,DADNS_from_NUT_GA0Tgt);

if ($ret3{status} == 0){
    vLog("NUT had transmitted DAD NS for its Global address");
    vLog("by receiving RA with PrefixOption (VLT == 0).");
#----- check if NUT's address is configured
    vSleep($SAA::wait_addrconf_with_RA);

    if (seqCheckNUTAddrConfiguredGA($IF,
	SOLNS_from_TN_GA0Tgt, 
	NA_from_NUT_GA0Tgt, 
	NA_from_NUT_GA0Tgt_woTLL, 
	NA_from_GA0NUT_GA0Tgt, 
	NA_from_GA0NUT_GA0Tgt_woTLL) eq TRUE) {
       	vLog("NUT assigned Global address to the interface.");
        if ($DAD_GA eq "NO") {
            vLog("NUT transmit DAD NS though DADTransmitsGA == NO");
    	}
        seqNG();
    }else{
        vLog(" NUT had not assign Global address.");
       	seqNG();
    }
} elsif ($ret3{status} != 0){
    vLog("NUT had not transmitted DAD NS for Global address");
    vLog("by receiving RA with PrefixOption (VLT == 0).");
#----- check if NUT's address is configured
    if (seqCheckNUTAddrConfiguredGA($IF,
	SOLNS_from_TN_GA0Tgt, 
	NA_from_NUT_GA0Tgt, 
	NA_from_NUT_GA0Tgt_woTLL, 
	NA_from_GA0NUT_GA0Tgt, 
	NA_from_GA0NUT_GA0Tgt_woTLL) eq TRUE) {
       	vLog("NUT assigned Global address to the interface.");
        if ($DAD_GA eq "YES") {
            vLog("NUT did not transmit DAD NS though DADTransmitsGA == YES");
    	}
        seqNG();
    }else{
        vLog("NUT did not assign Global address.");
       	seqOK();
    }
}

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


#end
########################################################################
__END__

=head1 NAME

RA_wVLT0 - check the process when NUT receives RA which contains one global prefix(VLT=0)(NOT Assigning Global address)

=head1 TARGET

Host only

=head1 SYNOPSIS

RA_wVLT0.seq [-tooloption ...] -pkt <packetdef> [addrconf=<addrconfname>] 

  -tooloption   : v6eval tool option
  <packetdef>   : packet definition file (v6eval tool option)
  <addrconfname>: how to configure address on NUT; boot/reboot

=begin html
<PRE>
 detail of v6eval tool option: see perldoc V6evalTool.pm, perldoc V6evalRemote.pm
</PRE>

=end html


=head1 INITIALIZATION

=begin html
<PRE>
 Reboot NUT or Initialize interface of NUT or Initialize IPv6 stack of NUT.
</PRE>

=end html

=head1 TEST PROCEDURE

=over 1

=item Test for Unicast address autoconfiguration

The following tests are prepared in this test package. See INDEX file.

B<Test for host only>

   When NUT receives RA which contains Global Prefix but its AF value is 0,
   NUT MUST NOT assign autoconfigured address. 

B<Test sequence>

  TN                            NUT
  ---------------------------------
  Initialize NUT

  Configure address of NUT (reboot or interface initialization etc...)

  TN wait the DAD NS sent from NUT
  <=== Judgement #1: DAD NS =======
        name: DADNS_from_NUT

  <=== Judgement #2: RS ===========
        name: RS_from_NUT, RS_from_NUT_wSLL

  ==== Action #1: RA =============>
        name: RA_GA0_VLT0

  X<== Judgement #3: DAD NS =======
        name: DADNS_from_NUT_GA0Tgt

  Wait for 5+DupAddrDetectTransmits*(RetransTimer/1000)[sec]

  Check if NUT's address is configured
  ==== Action #2: SOL NS =========>
        name: SOLNS_from_TN_GA0Tgt

  X<== Judgement #4: SOL NA =======
        name: 
	      NA_from_NUT_GA0Tgt, 
	      NA_from_NUT_GA0Tgt_woTLL, 
	      NA_from_GA0NUT_GA0Tgt, 
	      NA_from_GA0NUT_GA0Tgt_woTLL



=back 1

=head1 JUDGEMENT

=over 1

=item Test for Unicast address autoconfiguration

B<Test for host only>

B<NUT performs Stateless Address Autoconfiguration(Global) on its interface>

   Judgement #1. NUT MUST transmit DAD NS for its autoconfigured Link-local address.
        name: DADNS_from_NUT
	src: ::0
	dst: solnode[NUT's tentative Link-local]
        TargetAddress: NUT's tentative Link-local

   Judgement #2. NUT SHOULD transmit RS.
        name: RS_from_NUT
	src: NUT's Link-local
	dst: allrouter

   Action #1. TN transmits RA which contains Global Prefix.
        name: RA_GA0_VLT0
	src: TN's Link-local
	dst: allnode
	PXOPT: Global0
               VLT:0

   Judgement #3. NUT MUST NOT transmit DAD NS for its autoconfigured Global address.
		 (* If the address is consisits of EUI64, as same as Link-local
		 address, This DAD MAY be omitted.)
        name: DADNS_from_NUT_GA0Tgt
        src: ::0
	dst: solnode[NUT's tentative Global0]
        TargetAddress: NUT's tentative Global0

   Action #2. TN transmits SOL NS to check if NUT's address is configured.
        name: SOLNS_from_TN_GA0Tgt
        src: TN's Link-local
	dst: solnode[NUT's Global0]
        TargetAddress: NUT's Global0

   Judgement #4. NUT MUST NOT transmit SOL NA for its autoconfigured  Global address.
        name: 
	      NA_from_NUT_GA0Tgt, 
	      NA_from_NUT_GA0Tgt_woTLL, 
	      NA_from_GA0NUT_GA0Tgt, 
	      NA_from_GA0NUT_GA0Tgt_woTLL
	src: NUT's any Unicast Address
	dst: TN's Link-local
        TargetAddress: NUT's Global0
        RFlag: 0
        SFlag: 1
        OFlag: 1
	TLLOPT: NUT's MAC address
	(* TLLOPT may be omitted)


=back 1

=cut

# =head1 REFERENCE
# 
# =begin html
# <PRE>
# RFC2462
# <HR>
# 5.5.3.  Router Advertisement Processing <BR>
#    (omit)
#    For each Prefix-Information option in the Router Advertisement:
# <BR>
#     a) If the Autonomous flag is not set, silently ignore the
#        Prefix Information
#        option.
# <BR>
#     b) If the prefix is the link-local prefix, silently ignore the
#        Prefix Information option.
# <BR>
#     c) If the preferred lifetime is greater than the valid lifetime,
#        silently ignore the Prefix Information option. A node MAY wish to
#        log a system management error in this case.
# <BR>
# <A NAME="REF"><B>
#     d) If the prefix advertised does not match the prefix of an address
#        already in the list, and the Valid Lifetime is not 0, form an
#        address (and add it to the list) by combining the advertised
#        prefix with the link's interface identifier as follows:</B></A>
# <BR>
#    (omit)
# </PRE>
# <BR>
# 
# =end html
# 

=pod

=head1 REFERENCE

=begin html
<BLOCKQUOTE>
<PRE>
RFC 2462 - IPv6 Stateless Address Autoconfiguration
</PRE>
</BLOCKQUOTE>

=end html

=head1 SEE ALSO

=begin html
<PRE>
 detail of v6eval tool option: see perldoc V6evalTool.pm, perldoc V6evalRemote.pm
</PRE>

=end html

=cut