<?php /** * Elgg profile icon cache/bypass * * * @package ElggProfile */ // Get DB settings require_once(dirname(dirname(dirname(__FILE__))). '/engine/settings.php'); global $CONFIG; $join_date = (int)$_GET['joindate']; $last_cache = (int)$_GET['lastcache']; // icontime $guid = (int)$_GET['guid']; // If is the same ETag, content didn't changed. $etag = $last_cache . $guid; if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && trim($_SERVER['HTTP_IF_NONE_MATCH']) == $etag) { header("HTTP/1.1 304 Not Modified"); exit; } $size = strtolower($_GET['size']); if (!in_array($size, array('large', 'medium', 'small', 'tiny', 'master', 'topbar'))) { $size = "medium"; } $mysql_dblink = @mysql_connect($CONFIG->dbhost, $CONFIG->dbuser, $CONFIG->dbpass, true); if ($mysql_dblink) { if (@mysql_select_db($CONFIG->dbname, $mysql_dblink)) { $result = mysql_query("select name, value from {$CONFIG->dbprefix}datalists where name='dataroot'", $mysql_dblink); if ($result) { $row = mysql_fetch_object($result); while ($row) { if ($row->name == 'dataroot') { $data_root = $row->value; } $row = mysql_fetch_object($result); } } @mysql_close($mysql_dblink); if (isset($data_root)) { // this depends on ElggDiskFilestore::makeFileMatrix() $user_path = date('Y/m/d/', $join_date) . $guid; $filename = "$data_root$user_path/profile/{$guid}{$size}.jpg"; $contents = @file_get_contents($filename); if (!empty($contents)) { header("Content-type: image/jpeg"); header('Expires: ' . date('r', strtotime("+6 months")), true); header("Pragma: public"); header("Cache-Control: public"); header("Content-Length: " . strlen($contents)); header("ETag: $etag"); // this chunking is done for supposedly better performance $split_string = str_split($contents, 1024); foreach ($split_string as $chunk) { echo $chunk; } exit; } } } } // something went wrong so load engine and try to forward to default icon require_once(dirname(dirname(dirname(__FILE__))) . "/engine/start.php"); elgg_log("Profile icon direct failed.", "WARNING"); forward("_graphics/icons/user/default{$size}.gif");