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filesave.php
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Sun, Feb 16, 18:49

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

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