function check_for_rewrite()
{
if (defined('KOKEN_REWRITE')) {
return KOKEN_REWRITE;
}
if (!file_exists(FCPATH . '.htaccess') && strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') === 0) {
define('KOKEN_REWRITE', false);
return false;
}
$cache_key = 'core/rewrite_check';
$cache = Shutter::get_cache($cache_key, false);
if ($cache !== false) {
define('KOKEN_REWRITE', trim($cache['data']) === 'on');
return KOKEN_REWRITE;
}
$s = new Setting();
$s->where('name', 'site_url')->get();
if ($s->value === 'default') {
$koken_url_info = $this->config->item('koken_url_info');
$url = $koken_url_info->base . '__rewrite_test/';
} else {
$url = 'http://' . $_SERVER['HTTP_HOST'] . rtrim($s->value, '/') . '/__rewrite_test/';
}
$headers = array('Cache-Control: must-revalidate');
if (LOOPBACK_HOST_HEADER) {
$host = $_SERVER['SERVER_ADDR'] . ':' . $_SERVER['SERVER_PORT'];
$headers[] = 'Host: ' . $_SERVER['HTTP_HOST'];
$url = str_replace($_SERVER['HTTP_HOST'], $host, $url);
}
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_HEADER, 0);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
if (strpos($url, 'https://') === 0) {
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
}
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
$return = trim(curl_exec($curl));
$code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
curl_close($curl);
$rewrite_check = $code === 200 && $return === 'koken:rewrite';
Shutter::write_cache($cache_key, $rewrite_check ? 'on' : 'off');
define('KOKEN_REWRITE', $rewrite_check);
return $rewrite_check;
}
public static function cache($contents)
{
$buster = self::$root_path . DIRECTORY_SEPARATOR . 'storage' . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR . 'no-site-cache';
$cache_path = Shutter::filter('site.cache.write.path', self::$cache_path);
if (isset($cache_path) && error_reporting() == 0 && !file_exists($buster)) {
Shutter::write_cache($cache_path, $contents);
}
}
if ($cache) {
if ($cache['status'] === 304) {
$server_protocol = isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : false;
if (substr(php_sapi_name(), 0, 3) === 'cgi') {
header('Status: 304 Not Modified', true);
} elseif ($server_protocol === 'HTTP/1.1' or $server_protocol === 'HTTP/1.0') {
header($server_protocol . ' 304 Not Modified', true, $code);
} else {
header('HTTP/1.1 304 Not Modified', true, $code);
}
exit;
} else {
$blob = $cache['data'];
}
} else {
Shutter::write_cache($cache_key, $blob);
}
if ($dl) {
header("Content-Disposition: attachment; filename=\"" . basename($cache_key) . "\"");
header('Content-type: image/' . $ext);
header('Content-length: ' . strlen($blob));
echo $blob;
} else {
if ($base64) {
$string = base64_encode($blob);
die("data:image/{$ext};base64,{$string}");
}
}
header('Content-type: image/' . $ext);
header('Content-length: ' . strlen($blob));
header('Cache-Control: public');
