/*
* Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you 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.apache.synapse.transport.http.conn;
import org.apache.http.Header;
import org.apache.http.HttpRequest;
import org.apache.http.auth.AUTH;
import org.apache.http.auth.AuthenticationException;
import org.apache.http.auth.Credentials;
import org.apache.http.auth.MalformedChallengeException;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.message.BasicHeader;
import org.apache.http.protocol.HttpContext;
import org.apache.synapse.transport.passthru.PassThroughConstants;
/**
* ProfileProxyAuthenticator will be initialized when proxy profile is configured
*/
public class ProfileProxyAuthenticator implements ProxyAuthenticator{
private ProxyConfig proxyConfig;
private BasicScheme basicScheme;
public ProfileProxyAuthenticator(ProxyConfig proxyConfig) throws MalformedChallengeException {
this.proxyConfig = proxyConfig;
basicScheme = new BasicScheme();
basicScheme.processChallenge(new BasicHeader(AUTH.PROXY_AUTH, PassThroughConstants.PROXY_BASIC_REALM));
}
/**
* this will add authentication header to the request
* @param request outgoing http request
* @param context http context
* @throws AuthenticationException
*/
public void authenticatePreemptively(HttpRequest request, HttpContext context) throws AuthenticationException {
String targetHost = (String) context.getAttribute(PassThroughConstants.PROXY_PROFILE_TARGET_HOST);
Credentials proxyCredentials = proxyConfig.getCredentialsForTargetHost(targetHost);
if (proxyCredentials != null) {
Header authHeader = basicScheme.authenticate(proxyCredentials, request, context);
request.addHeader(authHeader);
}
}
}