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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."
//
////////////////////////////////////////////////////////////////////////////
// This file will execute vistrails and return a page containing the images
// generated.
// The url should follow this format:
// run_vistrails.php?host=vistrails.org&db=vistrails&vt=8&version=598
// host and dbname are optional and you can set the default values below
// if the port is different from the dafault you can also pass the new value on
// the url
//functions.php is located inside the ./mediawiki folder
require_once 'functions.php';
require_once 'config.php';
$SUPPORTED_IMAGE_FILES = array("png", "jpg", "gif");
// set variables with default values
$host = $DB_HOST;
$port = $DB_PORT;
$dbname = $DB_NAME;
$vtid = '';
$version = '';
$username = "vtserver";
$version_tag = '';
$force_build = 'False';
$pdf= 'False';
$showtree = 'False';
$showworkflow = 'False';
//Get the variables from the url
if(array_key_exists('host', $_GET))
$host = $_GET['host'];
if(array_key_exists('db',$_GET))
$dbname = $_GET['db'];
if(array_key_exists('port',$_GET))
$port = $_GET['port'];
if(array_key_exists('vt',$_GET))
$vtid = $_GET['vt'];
if(array_key_exists('version',$_GET))
$version = $_GET['version'];
if(array_key_exists('tag',$_GET)){
$version_tag = $_GET['tag'];
if ($version_tag != ''){
$request = xmlrpc_encode_request('get_tag_version',array($host, $port,
$dbname, $vtid,
$version_tag));
$response = do_call($VT_HOST,$VT_PORT,$request);
$version = get_version_from_response($response);
}
}
if(array_key_exists('buildalways',$_GET))
$force_build = $_GET['buildalways'];
if(array_key_exists('pdf',$_GET))
$pdf = $_GET['pdf'];
if(array_key_exists('showworkflow',$_GET))
$showworkflow = $_GET['showworkflow'];
if(array_key_exists('showtree',$_GET))
$showtree = $_GET['showtree'];
//echo $force_build;
//Check if vtid and version were provided
if(($vtid != '' and $version != '') or
($vtid != '' and strcasecmp($showtree,'True') == 0)){
$pdf_bool = False;
$pdf_tag = '';
if (strcasecmp($pdf,'True') == 0){
$pdf_bool = True;
$pdf_tag = '_pdf';
}
$build_always_bool = False;
if (strcasecmp($force_build,'True') == 0)
$build_always_bool = True;
if (strcasecmp($showtree,'True') == 0){
$filename = md5($host . '_'. $dbname .'_' . $port .'_' .$vtid);
if ($pdf_bool == True){
$func = "get_vt_graph_pdf";
$filename = 'vistrails/'.$filename . ".pdf";
} else {
$func = "get_vt_graph_png";
$filename = 'vistrails/'.$filename . ".png";
}
$request = xmlrpc_encode_request($func, array($host,
$port,
$dbname,
$vtid,
$USE_VISTRAILS_XML_RPC_SERVER));
$response = do_call($VT_HOST,$VT_PORT,$request);
$result = clean_up($response, $filename);
if ($pdf_bool == True)
$res = '<a href="' . $URL_TO_GRAPHS . $result .
'">' . $result . '</a>';
else
$res = '<img src="'. $URL_TO_GRAPHS . $result.
"\" alt=\"vt_id:$vtid\" />";
echo $res;
}
elseif (strcasecmp($showworkflow,'True') == 0){
$filename = md5($host . '_'. $dbname .'_' . $port .'_' .$vtid . '_' . $version);
if ($pdf_bool == True){
$func = "get_wf_graph_pdf";
$filename = 'workflows/'.$filename . ".pdf";
} else {
$func = "get_wf_graph_png";
$filename = 'workflows/'.$filename . ".png";
}
$fullpath = $PATH_TO_GRAPHS. $filename;
$cached = file_exists($fullpath);
if($USE_LOCAL_VISTRAILS_SERVER or
(!$cached or strcasecmp($force_build,'True') == 0)) {
$request = xmlrpc_encode_request($func, array($host,
$port,
$dbname,
$vtid,
$version));
$response = do_call($VT_HOST,$VT_PORT,$request);
$result = clean_up($response, $filename);
} else {
$result = $filename;
}
if ($pdf_bool == True)
$res = '<a href="' . $URL_TO_GRAPHS . $result .
'">' . $result . '</a>';
else
$res = '<img src="'. $URL_TO_GRAPHS . $result.
"\" alt=\"vt_id:$vtid version:$version\" />";
echo $res;
}
else{
$destdir = $PATH_TO_IMAGES;
$destversion = $host . '_'. $dbname .'_' . $port . '_' .$vtid . '_' .
$version. $pdf_tag;
$destversion = md5($destversion);
$destdir = $destdir . $destversion;
$result = '';
if((!path_exists_and_not_empty($destdir)) or strcasecmp($force_build,'True') == 0) {
if (!file_exists($destdir)){
mkdir($destdir);//,0770);
chmod($destdir,0770);
}
$request = xmlrpc_encode_request('run_from_db',
array($host, $port, $dbname, $vtid,
$destdir, $version, $pdf_bool,
'', $build_always_bool, '',
$USE_LOCAL_VISTRAILS_SERVER));
$response = do_call($VT_HOST,$VT_PORT,$request);
$result = multiple_clean_up($response, $destdir);
//echo $result;
}
$files = scandir($destdir);
$n = sizeof($files);
if ($n > 2){
$res = '';
foreach($files as $filename) {
if($filename != '.' and $filename != '..'){
$info = pathinfo($filename);
if ( in_arrayi($info['extension'],$SUPPORTED_IMAGE_FILES)){
list($width, $height, $type, $attr) = getimagesize($destdir.'/'.$filename);
if ($width > 600)
$width = 600;
$res = $res . '<img src="'. $WEB_PATH_TO_IMAGES . $destversion.'/'.$filename.
"\" alt=\"vt_id:$vtid version:$version\" width=\"$width\"/>";
}
else{
//create an href tag
$res = $res . '<a href="' . $WEB_PATH_TO_IMAGES .
$destversion.'/'.$filename.'">' . $filename . '</a>';
}
}
}
echo $res;
}
else{
echo "ERROR: Vistrails didn't produce any image.\n";
echo "This is the output: \n".$result;
}
}
}
else{
echo "ERROR: Vistrails id or version not provided.\n";
}
function get_version_from_response($xmlstring){
try{
$node = @new SimpleXMLElement($xmlstring);
return $node->params[0]->param[0]->value[0]->int[0];
} catch(Exception $e) {
echo "bad xml";
}
}
function clean_up($xmlstring, $filename=""){
global $PATH_TO_GRAPHS, $USE_LOCAL_VISTRAILS_SERVER;
try{
$node = @new SimpleXMLElement($xmlstring);
if ($USE_LOCAL_VISTRAILS_SERVER)
return $node->params[0]->param[0]->value[0]->array[0]->data[0]->value[0]->string[0];
else{
$contents = $node->params[0]->param[0]->value[0]->array[0]->data[0]->value[0]->base64[0];
$fileHandle = fopen($PATH_TO_GRAPHS. $filename, 'wb') or die("can't open file");
fputs($fileHandle, base64_decode($contents));
fclose($fileHandle);
return $filename;
}
} catch(Exception $e) {
echo "bad xml";
}
}
function multiple_clean_up($xmlstring, $destdir=""){
global $USE_LOCAL_VISTRAILS_SERVER;
try{
$node = @new SimpleXMLElement($xmlstring);
//var_dump($node);
if ($USE_LOCAL_VISTRAILS_SERVER)
return $node->params[0]->param[0]->value[0]->array[0]->data[0]->value[0]->string[0];
else{
$contents = $node->params[0]->param[0]->value[0]->array[0]->data[0]->value[0]->struct[0];
foreach ($contents as $value){
$image_name = (string) $value->name[0];
$image_contents = (string) $value->value[0]->base64[0];
$fileHandle = fopen($destdir.'/'. $image_name, 'wb') or die("can't open file");
fputs($fileHandle, base64_decode($image_contents));
fclose($fileHandle);
}
return $destdir;
}
} catch(Exception $e) {
echo "bad xml";
}
}
?>
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