<?php
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/*
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* filesave.php
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* To be used with ext-server_opensave.js for SVG-edit
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*
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* Licensed under the MIT License
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*
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* Copyright(c) 2010 Alexis Deveria
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*
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*/
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function encodeRFC5987ValueChars ($str) {
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// See https://tools.ietf.org/html/rfc5987#section-3.2.1
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// For better readability within headers, add back the characters escaped by rawurlencode but still allowable
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// Although RFC3986 reserves "!" (%21), RFC5987 does not
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return preg_replace_callback('@%(2[1346B]|5E|60|7C)@', function ($matches) {
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return chr('0x' . $matches[1]);
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}, rawurlencode($str));
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}
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require('allowedMimeTypes.php');
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$mime = (!isset($_POST['mime']) || !in_array($_POST['mime'], $allowedMimeTypesBySuffix)) ? 'image/svg+xml;charset=UTF-8' : $_POST['mime'];
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if (!isset($_POST['output_svg']) && !isset($_POST['output_img'])) {
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die('post fail');
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}
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$file = '';
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$suffix = '.' . array_search($mime, $allowedMimeTypesBySuffix);
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if (isset($_POST['filename']) && strlen($_POST['filename']) > 0) {
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$file = $_POST['filename'] . $suffix;
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} else {
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$file = 'image' . $suffix;
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}
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if ($suffix == '.svg') {
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$contents = $_POST['output_svg'];
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} else {
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$contents = $_POST['output_img'];
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$pos = (strpos($contents, 'base64,') + 7);
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$contents = base64_decode(substr($contents, $pos));
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}
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header('Cache-Control: public');
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header('Content-Description: File Transfer');
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// See https://tools.ietf.org/html/rfc6266#section-4.1
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header("Content-Disposition: attachment; filename*=UTF-8''" . encodeRFC5987ValueChars(
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// preg_replace('@[\\\\/:*?"<>|]@', '', $file) // If we wanted to strip Windows-disallowed characters server-side (but not a security issue, so we can strip client-side instead)
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$file
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));
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header('Content-Type: ' . $mime);
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header('Content-Transfer-Encoding: binary');
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echo $contents;
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?>
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