src/main/java/org/keycloak/protocol/cas/endpoints/AbstractValidateEndpoint.java

@@ -70,10 +70,7 @@

        event.detail(Details.REDIRECT_URI, service);

        client = realm.getClientsStream()
                .filter(c -> CASLoginProtocol.LOGIN_PROTOCOL.equals(c.getProtocol()))
                .filter(c -> RedirectUtils.verifyRedirectUri(session, service, c) != null)
                .findFirst().orElse(null);
        client = findClient(service);
        if (client == null) {
            event.error(Errors.CLIENT_NOT_FOUND);
            throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client not found", Response.Status.BAD_REQUEST);
@@ -91,6 +88,13 @@
        session.getContext().setClient(client);
    }

    protected ClientModel findClient(String service) {
        return realm.getClientsStream()
                .filter(c -> CASLoginProtocol.LOGIN_PROTOCOL.equals(c.getProtocol()))
                .filter(c -> RedirectUtils.verifyRedirectUri(session, service, c) != null)
                .findFirst().orElse(null);
    }

    protected void checkTicket(String ticket, String prefix, boolean requireReauth) {
        if (ticket == null) {
            event.error(Errors.INVALID_CODE);