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<?php
namespace Cleantalk\Variables;
use Cleantalk\ApbctWP\Escape;
/**
* Class Server
* Wrapper to safely get $_SERVER variables
*
* @usage \CleantalkSP\Variables\Server::get( $name );
*
* @package \CleantalkSP\Variables
*/
class Server extends ServerVariables
{
/**
* Gets given $_SERVER variable and save it to memory
*
* @param string $name
*
* @return mixed|string
*/
protected function getVariable($name)
{
// Return from memory. From $this->server
if (isset(static::getInstance()->variables[$name])) {
return static::getInstance()->variables[$name];
}
$name = strtoupper($name);
if ( isset($_SERVER[$name]) ) {
$raw_value = $_SERVER[$name];
if ($name === 'REQUEST_URI') {
//skip default getAndSanitize to keep special symbols to decode unicode chars on REQUEST_URI
$value = Escape::escJs(Escape::escHtml($raw_value));
} else {
$value = $this->getAndSanitize($raw_value);
}
} else {
$value = '';
}
// Convert to upper case for REQUEST_METHOD
if ( is_string($value) && $name === 'REQUEST_METHOD' ) {
$value = strtoupper($value);
}
// Convert HTML chars for HTTP_USER_AGENT, HTTP_USER_AGENT, SERVER_NAME
if ( is_string($value) && in_array($name, array('HTTP_USER_AGENT', 'HTTP_USER_AGENT', 'SERVER_NAME')) ) {
$value = htmlspecialchars($value);
}
// Remember for further calls
static::getInstance()->rememberVariable($name, $value);
return $value;
}
/**
* Checks if $_SERVER['REQUEST_URI'] contains string
*
* @param string $needle
*
* @return bool
* @psalm-suppress PossiblyUnusedMethod
*/
public static function inUri($needle)
{
return self::hasString('REQUEST_URI', $needle);
}
/**
* Is the host contains the string
*
* @param string $needle
*
* @return bool
* @psalm-suppress PossiblyUnusedMethod
*/
public static function inHost($needle)
{
return self::hasString('HTTP_HOST', $needle);
}
/**
* Getting domain name
*
* @return false|string
* @psalm-suppress PossiblyUnusedMethod
*/
public static function getDomain()
{
preg_match('@\S+\.(\S+)\/?$@', self::getString('HTTP_HOST'), $matches);
return isset($matches[1]) ? $matches[1] : false;
}
/**
* Checks if $_SERVER['REQUEST_URI'] contains string
*
* @param string $needle needle
*
* @return bool
* @psalm-suppress PossiblyUnusedMethod
*/
public static function inReferer($needle)
{
return self::hasString('HTTP_REFERER', $needle);
}
/**
* Checks if the current request method is POST
*
* @return bool
* @psalm-suppress PossiblyUnusedMethod
*/
public static function isPost()
{
return self::get('REQUEST_METHOD') === 'POST';
}
/**
* Checks if the current request method is GET
*
* @return bool
* @psalm-suppress PossiblyUnusedMethod
*/
public static function isGet()
{
return self::get('REQUEST_METHOD') === 'GET';
}
/**
* Determines if SSL is used.
*
* @return bool True if SSL, otherwise false.
* @psalm-suppress PossiblyUnusedMethod
*/
public static function isSSL()
{
return self::get('HTTPS') === 'on' ||
self::get('HTTPS') === '1' ||
self::get('SERVER_PORT') == '443';
}
protected function sanitizeDefault($value)
{
return sanitize_textarea_field($value);
}
}