refresh token bug fixed

destructor added
getdata() response error handling

php/AuthSCHClient.class.php

@@ -43,7 +43,8 @@ class AuthSCHClient {
     }
     
     public function __destruct() {
-        
+        if(isset($this->tokens))
+            unset ($this->tokens);
     }
     
     private function curlExec($urlPart, $data) {
@@ -109,7 +110,7 @@ class AuthSCHClient {
         );
         
         $ch = $this->curlExec("oauth2/token", $data);
-        $response = json_decode($ch);
+        $tokens = json_decode($ch);
         if($tokens === null || !isset($tokens->access_token) || empty($tokens->access_token))
                 throw new Exception ("invalid token data");
         
@@ -117,7 +118,19 @@ class AuthSCHClient {
     }
     
     public function getData() {
-        return json_decode(file_get_contents(self::$host . 'api/profile/?access_token=' . $this->tokens->access_token));
+        $response = @file_get_contents(self::$host . 'api/profile/?access_token=' . $this->tokens->access_token);
+        if(isset($response) && !empty($response)) {
+            $data = json_decode($response);
+            if($data !== null) {
+                return $data;
+            } else {
+                throw new Exception('invalid json');
+            }
+        } else {
+            if(isset($_SESSION['tokens'])) 
+                unset ($_SESSION['tokens']);
+            throw new Exception('invalid response');
+        }
     }
     
 }