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<?php
/**
* Elgg profile icon cache/bypass
*
* @package ElggProfile
* @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
* @author Curverider Ltd <info@elgg.com>
* @copyright Curverider Ltd 2008-2010
* @link http://elgg.com/
*/
// Get DB settings
require_once(dirname(dirname(dirname(__FILE__))). '/engine/settings.php');
global $CONFIG;
$username = $_GET['username'];
$joindate = (int)$_GET['joindate'];
$guid = (int)$_GET['guid'];
$size = strtolower($_GET['size']);
if (!in_array($size,array('large','medium','small','tiny','master','topbar'))) {
$size = "medium";
}
// security check on username string
if ( (strpos($username, '/')!==false) ||
(strpos($username, '\\')!==false) ||
(strpos($username, '"')!==false) ||
(strpos($username, '\'')!==false) ||
(strpos($username, '*')!==false) ||
(strpos($username, '&')!==false) ||
(strpos($username, ' ')!==false) ) {
// these characters are not allowed in usernames
exit;
}
$mysql_dblink = @mysql_connect($CONFIG->dbhost,$CONFIG->dbuser,$CONFIG->dbpass, true);
if ($mysql_dblink) {
if (@mysql_select_db($CONFIG->dbname,$mysql_dblink)) {
// get dataroot and simplecache_enabled in one select for efficiency
if ($result = mysql_query("select name, value from {$CONFIG->dbprefix}datalists where name in ('dataroot','simplecache_enabled')",$mysql_dblink)) {
$simplecache_enabled = true;
$row = mysql_fetch_object($result);
while ($row) {
if ($row->name == 'dataroot') {
$dataroot = $row->value;
} else if ($row->name == 'simplecache_enabled') {
$simplecache_enabled = $row->value;
}
$row = mysql_fetch_object($result);
}
}
@mysql_close($mysql_dblink);
// if the simplecache is enabled, we get icon directly
if ($simplecache_enabled) {
// first try to read icon directly
$user_path = date('Y/m/d/', $joindate) . $guid;
$filename = $dataroot . $user_path . "/profile/" . $username . $size . ".jpg";
$contents = @file_get_contents($filename);
if (!empty($contents)) {
header("Content-type: image/jpeg");
header('Expires: ' . date('r',time() + 864000));
header("Pragma: public");
header("Cache-Control: public");
header("Content-Length: " . strlen($contents));
$splitString = str_split($contents, 1024);
foreach($splitString as $chunk) {
echo $chunk;
}
exit;
}
}
}
}
// simplecache is not turned on or something went wrong so load engine and try that way
require_once(dirname(dirname(dirname(__FILE__))) . "/engine/start.php");
require_once(dirname(__FILE__).'/icon.php');
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