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<?php |
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/** |
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* ****************************************************************** |
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* Created by Marko Kungla on 09 Oct 2016 |
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* @package toolshedr |
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* Encoding UTF-8 |
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* File Headers.php |
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* Code format PSR-2 and 12 |
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* *******************************************************************/ |
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namespace Toolshedr\Core; |
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class Headers |
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{ |
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/** |
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* Domains allowed to connect |
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* @var array |
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*/ |
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private $whitlisted = array(); |
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private $http_response_code = 200; |
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/** |
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* Headers constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->addToWhitelist('localhost'); |
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} |
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/** |
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* Whitelist your UI |
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* |
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* @param $origin |
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* @return void |
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*/ |
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public function addToWhitelist(string $origin) |
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{ |
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array_push($this->whitlisted, $origin); |
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} |
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/** |
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* Send all headers |
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* |
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* @return void |
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*/ |
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public function areOk() |
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{ |
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header('Access-Control-Allow-Headers: X-Toolshedr-API-KEY'); |
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header('X-Powered-By: Toolshedr Server'); |
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header('Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS'); |
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return $this->checkOrigin(); |
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} |
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/** |
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* Is Domain whitelisted |
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* |
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* @param string $origin |
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* @return bool |
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*/ |
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public function isWhitelisted(string $origin) |
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{ |
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return in_array($origin, $this->whitlisted); |
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} |
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/** |
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* Check request origin |
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* |
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* @return bool |
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*/ |
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private function checkOrigin() |
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{ |
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if (!empty($_SERVER['HTTP_ORIGIN']) && $this->isWhitelisted($_SERVER['HTTP_ORIGIN'])) { |
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header(sprintf('Access-Control-Allow-Origin: %s', $_SERVER['HTTP_ORIGIN'])); |
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return true; |
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} else { |
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$this->setStatusCode(403); |
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header(sprintf('Access-Control-Allow-Origin: %s', $_SERVER['HTTP_HOST'])); |
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return false; |
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} |
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} |
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/** |
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* Get White listed domains |
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* |
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* @return array |
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*/ |
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public function getWhitelist() |
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{ |
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return $this->whitlisted; |
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} |
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/** |
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* Set HTTP Status Code |
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* |
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* @param int $code |
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*/ |
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public function setStatusCode(int $code) |
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{ |
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// Do not allow overwrite previous code other than 200 |
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if($this->http_response_code !== 200) return; |
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$this->http_response_code = $code; |
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} |
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/** |
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* Check does request have required headers |
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* |
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* @return bool |
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*/ |
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public function containsRequiredHeaders() |
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{ |
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return !empty($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']) && |
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$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS'] === 'x-toolshedr-api-key'; |
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} |
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/** |
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* Send remaining headers |
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* |
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* @return void |
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*/ |
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public function send() |
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{ |
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http_response_code($this->http_response_code); |
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$this->setContentType('application/json'); |
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} |
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/** |
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* Set output content type |
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* |
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* @param string $content_type |
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*/ |
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public function setContentType($content_type = 'application/json') |
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{ |
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header(sprintf('Content-Type: %s', $content_type)); |
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} |
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} |
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This check compares the return type specified in the
@return
annotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch.