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

@@ -42,12 +42,7 @@
        checkRealm();
        checkClient(service);

        AuthorizationEndpointChecks checks = getOrCreateAuthenticationSession(client, null);
        if (checks.response != null) {
            return checks.response;
        }

        authenticationSession = checks.authSession;
        authenticationSession = createAuthenticationSession(client, null);
        updateAuthenticationSession();

        // So back button doesn't work
@@ -64,7 +59,7 @@
    private void checkClient(String service) {
        if (service == null) {
            event.error(Errors.INVALID_REQUEST);
            throw new ErrorPageException(session, Messages.MISSING_PARAMETER, CASLoginProtocol.SERVICE_PARAM);
            throw new ErrorPageException(session, Response.Status.BAD_REQUEST, Messages.MISSING_PARAMETER, CASLoginProtocol.SERVICE_PARAM);
        }

        client = realm.getClients().stream()
@@ -73,12 +68,12 @@
                .findFirst().orElse(null);
        if (client == null) {
            event.error(Errors.CLIENT_NOT_FOUND);
            throw new ErrorPageException(session, Messages.CLIENT_NOT_FOUND);
            throw new ErrorPageException(session, Response.Status.BAD_REQUEST, Messages.CLIENT_NOT_FOUND);
        }

        if (!client.isEnabled()) {
            event.error(Errors.CLIENT_DISABLED);
            throw new ErrorPageException(session, Messages.CLIENT_DISABLED);
            throw new ErrorPageException(session, Response.Status.BAD_REQUEST, Messages.CLIENT_DISABLED);
        }

        redirectUri = RedirectUtils.verifyRedirectUri(uriInfo, service, realm, client);
@@ -93,10 +88,5 @@
        authenticationSession.setProtocol(CASLoginProtocol.LOGIN_PROTOCOL);
        authenticationSession.setRedirectUri(redirectUri);
        authenticationSession.setAction(AuthenticationSessionModel.Action.AUTHENTICATE.name());
    }

    @Override
    protected boolean isNewRequest(AuthenticationSessionModel authSession, ClientModel clientFromRequest, String requestState) {
        return true;
    }
}