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@@ -0,0 +1,141 @@
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+<?php
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+
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+/**
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+ * This file handles the avatar requests. The whole point of this file is to reduce the loaded stuff to show an image
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+ *
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+ * Simple Machines Forum (SMF)
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+ *
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+ * @package SMF
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+ * @author Simple Machines
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+ *
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+ * @copyright 2012 Simple Machines
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+ * @license http://www.simplemachines.org/about/smf/license.php BSD
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+ *
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+ * @version 2.1 Alpha 1
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+ */
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+
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+if (!defined('SMF'))
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+ die('Hacking attempt...');
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+
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+function showAvatar()
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+{
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+ global $smcFunc, $modSettings, $sourcedir, $maintenance;
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+
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+ // We need a valid ID
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+ if(empty($_GET['attach']) || (string)$_GET['attach'] != (string)(int)$_GET['attach'])
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+ die;
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+
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+ // No access in strict maintenance mode
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+ if(!empty($maintenance) && $maintenance == 2)
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+ die;
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+
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+ // This is done to clear any output that was made before now.
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+ if(!empty($modSettings['enableCompressedOutput']) && !headers_sent() && ob_get_length() == 0)
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+ {
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+ if(@ini_get('zlib.output_compression') == '1' || @ini_get('output_handler') == 'ob_gzhandler')
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+ $modSettings['enableCompressedOutput'] = 0;
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+ else
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+ ob_start('ob_gzhandler');
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+ }
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+
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+ if(empty($modSettings['enableCompressedOutput']))
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+ {
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+ ob_start();
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+ header('Content-Encoding: none');
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+ }
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+
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+ // Better handling
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+ $id_attach = (int) $_GET['attach'];
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+
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+ // Use cache when possible
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+ if(($cache = cache_get_data('avatar_lookup_id-'. $id_attach)) != null)
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+ $file = $cache;
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+
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+ // Get the info from the DB
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+ else
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+ {
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+ $request = $smcFunc['db_query']('', '
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+ SELECT id_folder, filename AS real_filename, file_hash, fileext, id_attach, attachment_type, mime_type, approved, id_member
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+ FROM {db_prefix}attachments
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+ WHERE id_attach = {int:id_attach}
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+ AND id_member > {int:blank_id_member}
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+ LIMIT 1',
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+ array(
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+ 'id_attach' => $id_attach,
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+ 'blank_id_member' => 0,
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+ )
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+ );
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+
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+ $file = $smcFunc['db_fetch_assoc']($request);
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+
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+ // Update the download counter (unless it's a thumbnail).
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+ if ($file['attachment_type'] != 3)
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+ $smcFunc['db_query']('attach_download_increase', '
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+ UPDATE LOW_PRIORITY {db_prefix}attachments
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+ SET downloads = downloads + 1
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+ WHERE id_attach = {int:id_attach}',
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+ array(
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+ 'id_attach' => $id_attach,
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+ )
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+ );
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+
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+ $file['filename'] = getAttachmentFilename($file['real_filename'], $id_attach, $file['id_folder'], false, $file['file_hash']);
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+
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+ // ETag time
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+ $file['etag'] = '"'. function_exists('md5_file') ? md5_file($file['filename']) : md5(file_get_contents($file['filename'])). '"';
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+
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+ // Cache it... (Why do I randomly select a length at which to expire? Search around for RIP_JITTER :P)
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+ cache_put_data('avatar_lookup_id-'. $id_attach, $file, mt_rand(850, 900));
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+ }
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+
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+ // The file does not exists
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+ if(!file_exists($file['filename']))
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+ {
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+ header('HTTP/1.0 404 File Not Found');
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+ die('404 File Not Found');
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+ }
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+
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+ // If it hasn't been modified since the last time this attachement was retrieved, there's no need to display it again.
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+ if (!empty($_SERVER['HTTP_IF_MODIFIED_SINCE']))
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+ {
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+ list($modified_since) = explode(';', $_SERVER['HTTP_IF_MODIFIED_SINCE']);
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+ if (strtotime($modified_since) >= filemtime($file['filename']))
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+ {
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+ ob_end_clean();
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+
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+ // Answer the question - no, it hasn't been modified ;).
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+ header('HTTP/1.1 304 Not Modified');
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+ exit;
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+ }
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+ }
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+
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+ header('Pragma: ');
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+ header('Expires: '. gmdate('D, d M Y H:i:s', time() + 31536000). ' GMT');
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+ header('Last-Modified: '. gmdate('D, d M Y H:i:s', filemtime($file['filename'])). ' GMT');
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+ header('Accept-Ranges: bytes');
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+ header('Connection: close');
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+ header('ETag: '. $file['etag']);
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+ header('Content-Type: '. $file['mime_type']);
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+
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+ // Since we don't do output compression for files this large...
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+ if (filesize($file['filename']) > 4194304)
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+ {
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+ // Forcibly end any output buffering going on.
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+ while (@ob_get_level() > 0)
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+ @ob_end_clean();
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+
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+ $fp = fopen($file['filename'], 'rb');
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+ while (!feof($fp))
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+ {
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+ print fread($fp, 8192);
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+ flush();
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+ }
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+ fclose($fp);
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+ }
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+
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+ // On some of the less-bright hosts, readfile() is disabled. It's just a faster, more byte safe, version of what's in the if.
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+ elseif (@readfile($file['filename']) === null)
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+ print file_get_contents($file['filename']);
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+
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+ die();
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+}
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emanuele45