org.opendatakit.security.spring.BasicAuthenticationFilter.java Source code

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Here is the source code for org.opendatakit.security.spring.BasicAuthenticationFilter.java

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/*
 * Copyright (C) 2012 University of Washington
 *
 * 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 org.opendatakit.security.spring;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.springframework.beans.factory.BeanNameAware;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.EnvironmentAware;
import org.springframework.core.env.Environment;
import org.springframework.security.authentication.AuthenticationDetailsSource;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.authentication.RememberMeServices;
import org.springframework.web.context.ServletContextAware;

/**
 * Wraps the Spring class and ensures that if an Authentication is already 
 * determined for this request, that it isn't overridden.
 * 
 * @author mitchellsundt@gmail.com
 *
 */
public class BasicAuthenticationFilter
        implements Filter, BeanNameAware, DisposableBean, InitializingBean, EnvironmentAware, ServletContextAware {

    org.springframework.security.web.authentication.www.BasicAuthenticationFilter impl;

    public BasicAuthenticationFilter(AuthenticationManager authenticationManager) {
        impl = new org.springframework.security.web.authentication.www.BasicAuthenticationFilter(
                authenticationManager);
    }

    public BasicAuthenticationFilter(AuthenticationManager authenticationManager,
            AuthenticationEntryPoint authenticationEntryPoint) {
        impl = new org.springframework.security.web.authentication.www.BasicAuthenticationFilter(
                authenticationManager, authenticationEntryPoint);
    }

    public void setAuthenticationDetailsSource(
            AuthenticationDetailsSource<javax.servlet.http.HttpServletRequest, ?> authenticationDetailsSource) {
        impl.setAuthenticationDetailsSource(authenticationDetailsSource);
    }

    public void setCredentialsCharset(String credentialsCharset) {
        impl.setCredentialsCharset(credentialsCharset);
    }

    public void setRememberMeServices(RememberMeServices rememberMeServices) {
        impl.setRememberMeServices(rememberMeServices);
    }

    @Override
    public void afterPropertiesSet() {
        impl.afterPropertiesSet();
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        if (SecurityContextHolder.getContext().getAuthentication() == null) {
            impl.doFilter(request, response, chain);
        } else {
            chain.doFilter(request, response);
        }
    }

    @Override
    public void setServletContext(ServletContext servletContext) {
        impl.setServletContext(servletContext);

    }

    @Override
    public void setEnvironment(Environment environment) {
        impl.setEnvironment(environment);
    }

    @Override
    public void setBeanName(String beanName) {
        impl.setBeanName(beanName);
    }

    @Override
    public void destroy() {
        impl.destroy();
    }

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        impl.init(filterConfig);
    }

}