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<?php
////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2014-2016, New York University.
// Copyright (C) 2011-2014, NYU-Poly.
// Copyright (C) 2006-2011, University of Utah.
// All rights reserved.
// Contact: contact@vistrails.org
//
// This file is part of VisTrails.
//
// "Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// - Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// - 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.
// - Neither the name of the New York University nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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."
//
////////////////////////////////////////////////////////////////////////////
require_once 'functions.php';
require_once 'config.php';
if (array_key_exists('getvt', $_GET)) {
$host = $DB_HOST;
$port = $DB_PORT;
$dbname = $_GET["db"];
$vtid = $_GET["getvt"];
$version = $_GET["version"];
$version_tag = '';
$execute = 'False';
$showspreadsheetonly = 'False';
$forceDB = 'False';
$includeFullTree = 'False';
$embedWorkflow = 'False';
if(array_key_exists('port', $_GET))
$port = $_GET['port'];
if(array_key_exists('host', $_GET))
$host = $_GET['host'];
if(array_key_exists('tag', $_GET))
$version_tag = $_GET['tag'];
if(array_key_exists('execute', $_GET))
$execute = $_GET['execute'];
if(array_key_exists('showspreadsheetonly', $_GET))
$showspreadsheetonly = $_GET['showspreadsheetonly'];
if(array_key_exists('forceDB', $_GET))
$forceDB = $_GET['forceDB'];
if(array_key_exists('includeFullTree', $_GET))
$includeFullTree = $_GET['includeFullTree'];
if(array_key_exists('embedWorkflow', $_GET))
$embedWorkflow = $_GET['embedWorkflow'];
$filename = md5($host . '_'. $dbname .'_' . $port .'_' .$vtid . '_' . $version);
$filename = $filename . ".vtl";
//change the address below to appropriate folder
//(with read+write access to apache user) if required
$fileHandle = fopen($PATH_TO_IMAGES. $filename, 'w') or die("can't open file");
$text = '<vtlink database="' . $dbname . '" host="'. $host .
'" port="'. $port . '" vtid="' . $vtid . '" execute="'.
$execute . '" showSpreadsheetOnly="'. $showspreadsheetonly.
'" forceDB="'.$forceDB.'"';
if(strcasecmp($embedWorkflow, 'True') == 0){
if (strcasecmp($includeFullTree,'True') == 0){
$request = xmlrpc_encode_request('get_vt_zip', array($host, $port,
$dbname, $vtid));
$response = do_call($VT_HOST,$VT_PORT,$request);
$vtcontent = get_vt_from_response($response);
$text .= ' version="' . $version . '" tag="' . $version_tag .'"';
//echo $vtcontent;
}
else{
$request = xmlrpc_encode_request('get_wf_vt_zip', array($host, $port,
$dbname, $vtid,
$version));
$response = do_call($VT_HOST,$VT_PORT,$request);
$vtcontent = get_vt_from_response($response);
//when a workflow is embedded the version is written only when
//forceDB is True. Or else version points to the wrong workflow
if (strcasecmp($forceDB, 'True') == 0){
$text .= ' version="' . $version . '" tag="' . $version_tag .'"';
}
}
$text .= ' vtcontent="'.$vtcontent .'"';
}
else{
$text .= ' version="' . $version . '" tag="' . $version_tag .'"';
}
$text .= ' />';
fputs($fileHandle, $text);
fclose($fileHandle);
header("Content-Type: text/vistrails");
header("Content-Disposition: attachment;filename=" . $filename);
//the address below should be the same as one above in line 12
readfile($PATH_TO_IMAGES.$filename);
exit();
}
function get_vt_from_response($xmlstring) {
try{
$node = @new SimpleXMLElement($xmlstring);
return $node->params[0]->param[0]->value[0]->array[0]->data[0]->value[0]->string[0];
} catch(Exception $e) {
echo "bad xml";
}
}
?>
<html>
<head>
<title>Vistrails Download</title>
<body>
Wrong parameters set!
</body>
</html>
<? //Ends ?>
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