com.xebialabs.deployit.ci.server.PreemptiveAuthenticationInterceptor.java Source code

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Here is the source code for com.xebialabs.deployit.ci.server.PreemptiveAuthenticationInterceptor.java

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/**
 * Copyright (c) 2014, XebiaLabs B.V., All rights reserved.
 *
 *
 * The XL Deploy plugin for Jenkins is licensed under the terms of the GPLv2
 * <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most XebiaLabs Libraries.
 * There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
 * this software, see the FLOSS License Exception
 * <https://github.com/jenkinsci/deployit-plugin/blob/master/LICENSE>.
 *
 * This program is free software; you can redistribute it and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software Foundation; version 2
 * of the License.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this
 * program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
 * Floor, Boston, MA 02110-1301  USA
 */

package com.xebialabs.deployit.ci.server;

import java.io.IOException;
import java.io.Serializable;

import org.apache.http.HttpException;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.HttpRequestInterceptor;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.Credentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.protocol.ClientContext;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.protocol.ExecutionContext;
import org.apache.http.protocol.HttpContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class PreemptiveAuthenticationInterceptor implements HttpRequestInterceptor, Serializable {

    private static final Logger LOGGER = LoggerFactory.getLogger(PreemptiveAuthenticationInterceptor.class);

    @Override
    public void process(final HttpRequest request, final HttpContext context) throws HttpException, IOException {
        if (request.getFirstHeader("Authorization") == null) {
            LOGGER.trace("No 'Authorization' header found for request: {}", request.getRequestLine());
            HttpHost targetHost = (HttpHost) context.getAttribute(ExecutionContext.HTTP_TARGET_HOST);
            CredentialsProvider credentialsProvider = (CredentialsProvider) context
                    .getAttribute(ClientContext.CREDS_PROVIDER);
            if (credentialsProvider != null) {
                Credentials credentials = credentialsProvider
                        .getCredentials(new AuthScope(targetHost.getHostName(), targetHost.getPort()));
                if (credentials != null) {
                    request.setHeader(new BasicScheme().authenticate(credentials, request, context));
                    LOGGER.trace("Set 'Authorization' header {} for request: {}", credentials.getUserPrincipal(),
                            request.getRequestLine());
                }
            }
        }
    }

}