* @version 1.0 */ public function __construct($clientID, $clientSecret, $redirectURI){ $this->clientID = $clientID; $this->clientSecret = $clientSecret; $this->redirectURI = $redirectURI; } /** * [process description] * @author KBRmedia * @version 1.0 * @return [type] [description] */ public function process(){ if(isset($_GET["code"])){ if($access = $this->http("oauth.access", ["code" => $_GET["code"], "client_id" => $this->clientID, "client_secret" => $this->clientSecret, "redirect_uri" => $this->redirectURI])){ return $access->user_id; } } return false; } /** * [validate description] * @author KBRmedia * @version 1.0 * @param [type] $signing_secret [description] * @return [type] [description] */ public static function validate($signing_secret){ if(isset($_SERVER["HTTP_X_SLACK_REQUEST_TIMESTAMP"]) && isset($_SERVER["HTTP_X_SLACK_SIGNATURE"])){ $timestamp = $_SERVER["HTTP_X_SLACK_REQUEST_TIMESTAMP"]; $sig = $_SERVER["HTTP_X_SLACK_SIGNATURE"]; $input = file_get_contents("php://input"); $validation = "v0:{$timestamp}:{$input}"; if("v0=".hash_hmac("sha256", $validation, $signing_secret) == $_SERVER["HTTP_X_SLACK_SIGNATURE"]){ return true; } } return false; } /** * [error description] * @author KBRmedia * @version 1.0 * @return [type] [description] */ public function error(){ if(isset($_GET["error"])){ $errors = [ "access_denied" => e("You need to allow this application to install the commands on your slack account."), "error" => e("Something went wrong, please try again."), ]; if(isset($errors[$_GET["error"]])) return $errors[$_GET["error"]]; return $errors["error"]; } return false; } /** * [redirect description] * @author KBRmedia * @version 1.0 * @return [type] [description] */ public function redirect(){ header("Location: https://slack.com/oauth/authorize?scope=commands&client_id={$this->clientID}&redirect_uri={$this->redirectURI}"); exit; } /** * Generate Authentication Button * @author KBRmedia * @version 1.0 * @return [type] [description] */ public function generateAuth(){ return ''; } /** * [http description] * @author KBRmedia * @version 1.0 * @param array $data [description] * @return [type] [description] */ private function http($endpoint, array $data){ $parameters = http_build_query($data); $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, self::slackURI."/".$endpoint); curl_setopt($curl, CURLOPT_POST, count($data)); curl_setopt($curl, CURLOPT_POSTFIELDS, $parameters); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); $response = curl_exec($curl); if($error = curl_error($curl)){ error_log($error); } curl_close($curl); return json_decode($response); } }