Remove absolute url (schema, host name) from f= paths

I didn’t have a lot of time to fix this so my solution was to simply filter and overwrite $_GET[‘f’] directly in bwp-minify/min/index.php. I also included the following filter class there, for reference:

class BWPMinify_FilesInputFilter {
	public static function absoluteLocalize($f, $exclude_port = false) {
		if (empty($f))
			return $f;

		// not sure who is responsible for this
		$_filter_uri = str_replace('://', ':/', self::__uriRoot($exclude_port));

		$_f_parts = explode(',', $f);

		$_result_paths = array();
		foreach ($_f_parts as $_f_path) {
			$_result_paths[] = str_replace($_filter_uri, '', $_f_path);
		}

		return implode(',', $_result_paths);
	}

	private static function __uriRoot($exclude_port = false) {
		$s = $_SERVER;
		$ssl = (!empty($s['HTTPS']) && $s['HTTPS'] == 'on') ? true : false;
		$sp = strtolower($s['SERVER_PROTOCOL']);
		$protocol = substr($sp, 0, strpos($sp, '/')) . (($ssl) ? 's' : '');

		$port = $s['SERVER_PORT'];
		$port = ((!$ssl && $port == '80')
				|| ($ssl && $port == '443')
				|| $exclude_port)
				? '' : ':' . $port;

		$host = isset($s['HTTP_X_FORWARDED_HOST'])
				? $s['HTTP_X_FORWARDED_HOST'] :
			isset($s['HTTP_HOST']) ? $s['HTTP_HOST'] : $s['SERVER_NAME'];

		return $protocol . '://' . $host . $port;
	}
}

In /bwp-minify/min/index.php you will see an existing comment “// serve!” — under this line I simply filter $_GET[‘f’]

$_GET['f'] = BWPMinify_FilesInputFilter::absoluteLocalize($_GET['f'], true);