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Server-side library used by applications created with the JHipster generator, see https://www.jhipster.tech/ for more information on JHipster

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/*
 * Copyright 2016-2020 the original author or authors from the JHipster project.
 *
 * This file is part of the JHipster project, see https://www.jhipster.tech/
 * for more information.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.github.jhipster.security;

import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * Returns a 401 error code (Unauthorized) to the client, when Ajax authentication fails.
 */
public class AjaxAuthenticationFailureHandler extends SimpleUrlAuthenticationFailureHandler {

    /** Constant UNAUTHORIZED_MESSAGE="Authentication failed" */
    public static final String UNAUTHORIZED_MESSAGE = "Authentication failed";

    /** {@inheritDoc} */
    @Override
    public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response,
                                        AuthenticationException exception) throws IOException, ServletException {
        response.sendError(HttpServletResponse.SC_UNAUTHORIZED, UNAUTHORIZED_MESSAGE);
    }
}