#!/usr/bin/perl
#
# SCTP Conformance Test Suite Implementation
# (C) Copyright Fujitsu Ltd. 2008, 2009
#
# This file is part of the SCTP Conformance Test Suite implementation.
#
# The SCTP Conformance Test Suite implementation is free software;
# you can redistribute it and/or modify it under the terms of
# the GNU General Public License version 2 as published by
# the Free Software Foundation.
#
# The SCTP Conformance Test Suite implementation is distributed in the
# hope that it will be useful, but WITHOUT ANY WARRANTY; without even
# the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
# PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU CC; see the file COPYING.  If not, write to
# the Free Software Foundation, 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
# Please send any bug reports or fixes you make to the
# email address(es):
#    networktest sctp <networktest-sctp@lists.sourceforge.net>
#
# Or submit a bug report through the following website:
#    http://networktest.sourceforge.net/
#
# Written or modified by:
#    Hiroaki Kago <linuxsctp-kg@ml.css.fujitsu.com>
#    Wei Yongjun <yjwei@cn.fujitsu.com>
#
# Any bugs reported given to us we will try to fix... any fixes shared will
# be incorporated into the next SCTP release.
#
##############################################################################
BEGIN {	$V6evalTool::TestVersion = '$Name: REL_1_0_0 $'; }

use lib "../common";
use V6evalTool;
use SCTP;

%pktdesc = (
	sctp_chunk_shutdown_complete_bad_len	=> "Send SCTP CHUNK_SHUTDOWN_COMPLETE (Chunk Length is set to zero)",
	sctp_chunk_abort			=> "Recv SCTP CHUNK_ABORT (Protocol Violation)",
);

$IF0 = Link0;

vCapture($IF0);

sctpCheckEnv($IF0);

sctpStartServer($IF0);

vConnect($IF0);

vLogHTML('<B>================ Main Test =================</B>');

# This packet may cause Remote System dead loop
vSend($IF0, sctp_chunk_shutdown_complete_bad_len);

%ret = vWarpRecv($IF0, 10, 0, 0, sctp_chunk_abort);
if($ret{status} != 0 || $ret{recvFrame} ne sctp_chunk_abort) {
	vLogHTML('Cannot receive SCTP CHUNK_ABORT<BR>');
	vLogHTML('<FONT COLOR="#00FF00">NG</FONT>'); 
	exit $V6evalTool::exitFail;
}

# If we can ping to Remote System, this problem has been fixed
sctpCheckEnv($IF0);

vLogHTML(OK);
exit $V6evalTool::exitPass;

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

=head1 NAME

  ShutCompWithZeroLength.seq - SHUTDOWN-COMPLETE chunk is received with chunk length set to zero in ESTABLISHED state

=head1 PURPOSE

  To check that if OOTB SHUTDOWN-COMPLETE chunk is received with chunk length
  set to zero in ESTABLISHED state, the endpoint should response with ABORT
  message and error cause is set to Protocol Violation.

=head1 SYNOPSIS

=begin html
<PRE>
  <A HREF="./ShutCompWithZeroLength.seq">./ShutCompWithZeroLength.seq</A> [-tooloption ...] -pkt <A HREF="./ShutCompWithZeroLength.def">./ShutCompWithZeroLength.def</A>
    -tooloption : v6eval tool option
  See Also: <A HREF="../common/STD_PKT_COMMON.def">../common/STD_PKT_COMMON.def</A>
            <A HREF="../common/SCTP_COMMON.def">../common/SCTP_COMMON.def</A>
</PRE>

=end html

=head1 PRE-TEST CONDITION

  Association is not established between endpoint A and B. Arrange data 
  in endpoint A such that SHUTDOWN-COMPLETE chunk with chunk length set
  to zero is sent to endpoint B.

=head1 TEST PROCEDURE

  Endpoint A                           Endpoint B                ULP
  (ESTABLISHED)                        (ESTABLISHED)

  SHUTDOWN-COMPLETE ----------------->
  (with chunk length set to zero)
                    <----------------    ABORT
                                         (Protocol Violation)

  TEST DESCRIPTION:

  1. From endpoint A, send valid SHUTDOWN_COMPLETE message with chunk
     length set to zero to endpoint B, when there is no association
     between them. 
  2. Check A: ABORT should be received at endpoint A.
  3. Check B: Error cause in ABORT is set to "Protocol Violation".
  4. Check C: Remote System not enter dead loop.

=head1 NOTE

  None

=head1 REFERENCE

  RFC 4960

  8.4.  Handle "Out of the Blue" Packets

=begin html
<PRE>
    <B>An SCTP packet is called an "out of the blue" (OOTB) packet if it is
    correctly formed (i.e., passed the receiver's CRC32c check; see
    Section 6.8), but the receiver is not able to identify the
    association to which this packet belongs.</B>
</PRE>

=end html

    The receiver of an OOTB packet MUST do the following:

    1)  If the OOTB packet is to or from a non-unicast address, a
        receiver SHOULD silently discard the packet.  Otherwise,