mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-12-14 02:30:56 +01:00
53 lines
1.6 KiB
PHP
53 lines
1.6 KiB
PHP
<?php
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/**
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* EGroupware - Anonymous images for login page
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*
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* Images are store in EGroupware files-directory in subdirectory "anon-images"
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*
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* @link http://www.egroupware.org
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* @author Ralf Becker <rb-at-egroupware.org>
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* @license http://opensource.org/licenses/lgpl-license.php LGPL - GNU Lesser General Public License
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* @package api
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* @subpackage login
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*/
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use EGroupware\Api;
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$GLOBALS['egw_info'] = array('flags' => array(
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'disable_Template_class' => True,
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'noheader' => True,
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// misuse session creation callback to send the image, in case we have no session
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'autocreate_session_callback' => 'send_image',
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'currentapp' => 'api',
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));
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require('../header.inc.php');
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send_image();
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function send_image()
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{
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$path = $GLOBALS['egw_info']['server']['files_dir'] . '/anon-images';
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if (!file_exists($path) || empty($_GET['src']) ||
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basename($_GET['src']) !== $_GET['src'] || // make sure no directory traversal
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!preg_match('/^[a-z 0-9._-]+\.(jpe?g|png|gif|svg|ico)$/i', $_GET['src']) || // only allow images, not eg. Javascript!
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!file_exists($path .= '/' . $_GET['src']) ||
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!($fp = fopen($path, 'r')))
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{
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error_log(__FILE__ . ": _GET[src]='$_GET[src]', path=$path returning HTTP status 404 Not Found");
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http_response_code(404);
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}
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else
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{
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Api\Session::cache_control(864000); // 10 days
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$size = filesize($path);
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header('ETag: "' . md5($_GET['src'] . $size . filemtime($path)) . '"');
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header('Content-Type: ' . Api\MimeMagic::filename2mime($_GET['src']));
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header('Content-Length: ' . $size);
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fpassthru($fp);
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fclose($fp);
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}
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exit;
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}
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