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#!/usr/bin/perl
# *************************************************************
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
# *************************************************************
require "common.pl";
print "Content-type: text/html\n\n";
print "<HTML>";
# get current and last shown picture id
$sCurrPic = join( "", common::File_read( "currpic.txt" ) );
%aRequestMap = common::HTTP_getRequest();
$sLastPic = $aRequestMap{ "LastPic" };
print "<HEAD>";
print "<META http-equiv=\"refresh\" CONTENT=\"" . $common::REFRESH_TIME . "; URL=poll.pl?LastPic=" . $sCurrPic . "\">";
print "</HEAD>";
#' a new picture was chosen ?
if( $sLastPic ne $sCurrPic )
{
# then show the new picture
print "<BODY bgcolor=\"red\" onLoad=\"parent.frame1.location.href='./show.pl?" . $sCurrPic . "'\">";
}
else
{
# otherwise do nothing
print "<BODY bgcolor=\"green\">";
}
print "</BODY>";
print "</HTML>";