Filter redirect URL before stashing it to a cookie

includes/openid-connect-generic-login-form.php

@@ -80,6 +80,8 @@ class OpenID_Connect_Generic_Login_Form {
 				}
 			}
 
+			$redirect_url = apply_filters( 'openid-connect-generic-cookie-redirect-url', $redirect_url );
+
 			setcookie( $this->client_wrapper->cookie_redirect_key, $redirect_url, $redirect_expiry, COOKIEPATH, COOKIE_DOMAIN, is_ssl() );
 		}
 	}

openid-connect-generic.php

@@ -14,9 +14,10 @@ Notes
   Spec Doc - http://openid.net/specs/openid-connect-basic-1_0-32.html
 
   Filters
-  - openid-connect-generic-alter-request      - 2 args: request array, specific request op
+  - openid-connect-generic-alter-request       - 3 args: request array, plugin settings, specific request op
   - openid-connect-generic-settings-fields     - modify the fields provided on the settings page
   - openid-connect-generic-login-button-text   - modify the login button text
+  - openid-connect-generic-cookie-redirect-url - modify the redirect url stored as a cookie
   - openid-connect-generic-user-login-test     - (bool) should the user be logged in based on their claim
   - openid-connect-generic-user-creation-test  - (bool) should the user be created based on their claim
   - openid-connect-generic-auth-url            - modify the authentication url