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128 lines
3.4 KiB
128 lines
3.4 KiB
<?php
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/**
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* This file is part of the exporting module for Highcharts JS.
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* www.highcharts.com/license
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*
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*
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* Available POST variables:
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*
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* $filename string The desired filename without extension
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* $type string The MIME type for export.
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* $width int The pixel width of the exported raster image. The height is calculated.
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* $svg string The SVG source code to convert.
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*/
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// Options
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define ('BATIK_PATH', 'batik-rasterizer.jar');
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///////////////////////////////////////////////////////////////////////////////
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ini_set('magic_quotes_gpc', 'off');
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$type = $_POST['type'];
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$svg = (string) $_POST['svg'];
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$filename = (string) $_POST['filename'];
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// prepare variables
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if (!$filename or !preg_match('/^[A-Za-z0-9\-_ ]+$/', $filename)) {
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$filename = 'chart';
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}
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if (get_magic_quotes_gpc()) {
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$svg = stripslashes($svg);
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}
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// check for malicious attack in SVG
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if(strpos($svg,"<!ENTITY") !== false || strpos($svg,"<!DOCTYPE") !== false){
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exit("Execution is stopped, the posted SVG could contain code for a malicious attack");
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}
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$tempName = md5(rand());
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// allow no other than predefined types
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if ($type == 'image/png') {
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$typeString = '-m image/png';
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$ext = 'png';
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} elseif ($type == 'image/jpeg') {
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$typeString = '-m image/jpeg';
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$ext = 'jpg';
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} elseif ($type == 'application/pdf') {
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$typeString = '-m application/pdf';
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$ext = 'pdf';
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} elseif ($type == 'image/svg+xml') {
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$ext = 'svg';
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} else { // prevent fallthrough from global variables
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$ext = 'txt';
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}
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$outfile = "temp/$tempName.$ext";
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if (isset($typeString)) {
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// size
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$width = '';
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if ($_POST['width']) {
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$width = (int)$_POST['width'];
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if ($width) $width = "-w $width";
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}
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// generate the temporary file
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if (!file_put_contents("temp/$tempName.svg", $svg)) {
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die("Couldn't create temporary file. Check that the directory permissions for
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the /temp directory are set to 777.");
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}
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// Troubleshooting snippet
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/*
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$command = "/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/bin/java -jar ". BATIK_PATH ." $typeString -d $outfile $width temp/$tempName.svg 2>&1";
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$output = shell_exec($command);
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echo "<pre>Command: $command <br>";
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echo "Output: $output</pre>";
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die;
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// */
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// Do the conversion
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$output = shell_exec("java -jar ". BATIK_PATH ." $typeString -d $outfile $width temp/$tempName.svg");
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// catch error
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if (!is_file($outfile) || filesize($outfile) < 10) {
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echo "<pre>$output</pre>";
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echo "Error while converting SVG. ";
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if (strpos($output, 'SVGConverter.error.while.rasterizing.file') !== false) {
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echo "
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<h4>Debug steps</h4>
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<ol>
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<li>Copy the SVG:<br/><textarea rows=5>" . htmlentities(str_replace('>', ">\n", $svg)) . "</textarea></li>
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<li>Go to <a href='http://validator.w3.org/#validate_by_input' target='_blank'>validator.w3.org/#validate_by_input</a></li>
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<li>Paste the SVG</li>
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<li>Click More Options and select SVG 1.1 for Use Doctype</li>
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<li>Click the Check button</li>
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</ol>";
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}
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}
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// stream it
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else {
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header("Content-Disposition: attachment; filename=\"$filename.$ext\"");
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header("Content-Type: $type");
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echo file_get_contents($outfile);
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}
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// delete it
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unlink("temp/$tempName.svg");
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unlink($outfile);
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// SVG can be streamed directly back
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} else if ($ext == 'svg') {
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header("Content-Disposition: attachment; filename=\"$filename.$ext\"");
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header("Content-Type: $type");
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echo $svg;
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} else {
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echo "Invalid type";
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}
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?>
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