update authenticationstatus controll

src/AuthenticationStatus.php

@@ -4,4 +4,5 @@ abstract class AuthenticationStatus
     const CHALLENGE = "CHALLENGE";
     const ACCEPT = "ACCEPT";
     const REJECT = "REJECT";
+    const NONE = "NONE";
 }
\ No newline at end of file

src/PIResponse.php

@@ -86,6 +86,7 @@ class PIResponse
             $ret->transactionID = $map['detail']['transaction_id'];
         }
 
+        // Prove that the autheitication status is one of the allowed ones
         $r = $map['result']['authentication'] ?: null;
         if ($r === AuthenticationStatus::CHALLENGE)
         {
@@ -99,6 +100,11 @@ class PIResponse
         {
             $ret->authenticationStatus = AuthenticationStatus::REJECT;
         }
+        else
+        {
+            $privacyIDEA->debugLog("Unknown authentication status");
+            $ret->authenticationStatus = AuthenticationStatus::NONE;
+        }
         $ret->status = $map['result']['status'] ?: false;
         $ret->value = $map['result']['value'] ?: false;