Файл: qa-include/qa-blob.php
Строк: 87
<?php
/*
Question2Answer (c) Gideon Greenspan
http://www.question2answer.org/
File: qa-include/qa-blob.php
Version: See define()s at top of qa-include/qa-base.php
Description: Response to blob requests, outputting blob from the database
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
More about this license: http://www.question2answer.org/license.php
*/
// Ensure no PHP errors are shown in the blob response
@ini_set('display_errors', 0);
function qa_blob_db_fail_handler()
{
header('HTTP/1.1 500 Internal Server Error');
qa_exit('error');
}
// Load the Q2A base file which sets up a bunch of crucial stuff
require 'qa-base.php';
qa_report_process_stage('init_blob');
// Output the blob in question
require_once QA_INCLUDE_DIR.'qa-db-blobs.php';
qa_db_connect('qa_blob_db_fail_handler');
$blob=qa_db_blob_read(qa_get('qa_blobid'));
if (isset($blob)) {
header('Cache-Control: max-age=2592000, public'); // allows browsers and proxies to cache the blob
switch ($blob['format']) {
case 'jpeg':
case 'jpg':
header('Content-Type: image/jpeg');
break;
case 'gif':
header('Content-Type: image/gif');
break;
case 'png':
header('Content-Type: image/png');
break;
case 'swf':
header('Content-Type: application/x-shockwave-flash');
break;
default:
$filename=preg_replace('/[^A-Za-z0-9 \._-]/', '-', $blob['filename']); // for compatibility with HTTP headers and all browsers
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="'.$filename.'"');
break;
}
echo $blob['content'];
} else
header('HTTP/1.0 404 Not Found');
qa_db_disconnect();
/*
Omit PHP closing tag to help avoid accidental output
*/