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      1 /*
      2  * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/impl/client/DefaultUserTokenHandler.java $
      3  * $Revision: 659971 $
      4  * $Date: 2008-05-25 05:01:22 -0700 (Sun, 25 May 2008) $
      5  *
      6  * ====================================================================
      7  *
      8  *  Licensed to the Apache Software Foundation (ASF) under one or more
      9  *  contributor license agreements.  See the NOTICE file distributed with
     10  *  this work for additional information regarding copyright ownership.
     11  *  The ASF licenses this file to You under the Apache License, Version 2.0
     12  *  (the "License"); you may not use this file except in compliance with
     13  *  the License.  You may obtain a copy of the License at
     14  *
     15  *      http://www.apache.org/licenses/LICENSE-2.0
     16  *
     17  *  Unless required by applicable law or agreed to in writing, software
     18  *  distributed under the License is distributed on an "AS IS" BASIS,
     19  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     20  *  See the License for the specific language governing permissions and
     21  *  limitations under the License.
     22  * ====================================================================
     23  *
     24  * This software consists of voluntary contributions made by many
     25  * individuals on behalf of the Apache Software Foundation.  For more
     26  * information on the Apache Software Foundation, please see
     27  * <http://www.apache.org/>.
     28  *
     29  */
     30 
     31 package org.apache.http.impl.client;
     32 
     33 import java.security.Principal;
     34 
     35 import javax.net.ssl.SSLSession;
     36 
     37 import org.apache.http.auth.AuthScheme;
     38 import org.apache.http.auth.AuthState;
     39 import org.apache.http.auth.Credentials;
     40 import org.apache.http.client.UserTokenHandler;
     41 import org.apache.http.client.protocol.ClientContext;
     42 import org.apache.http.conn.ManagedClientConnection;
     43 import org.apache.http.protocol.ExecutionContext;
     44 import org.apache.http.protocol.HttpContext;
     45 
     46 public class DefaultUserTokenHandler implements UserTokenHandler {
     47 
     48     public Object getUserToken(final HttpContext context) {
     49 
     50         Principal userPrincipal = null;
     51 
     52         AuthState targetAuthState = (AuthState) context.getAttribute(
     53                 ClientContext.TARGET_AUTH_STATE);
     54         if (targetAuthState != null) {
     55             userPrincipal = getAuthPrincipal(targetAuthState);
     56             if (userPrincipal == null) {
     57                 AuthState proxyAuthState = (AuthState) context.getAttribute(
     58                         ClientContext.PROXY_AUTH_STATE);
     59                 userPrincipal = getAuthPrincipal(proxyAuthState);
     60             }
     61         }
     62 
     63         if (userPrincipal == null) {
     64             ManagedClientConnection conn = (ManagedClientConnection) context.getAttribute(
     65                     ExecutionContext.HTTP_CONNECTION);
     66             if (conn.isOpen()) {
     67                 SSLSession sslsession = conn.getSSLSession();
     68                 if (sslsession != null) {
     69                     userPrincipal = sslsession.getLocalPrincipal();
     70                 }
     71             }
     72         }
     73 
     74         return userPrincipal;
     75     }
     76 
     77     private static Principal getAuthPrincipal(final AuthState authState) {
     78         AuthScheme scheme = authState.getAuthScheme();
     79         if (scheme != null && scheme.isComplete() && scheme.isConnectionBased()) {
     80             Credentials creds = authState.getCredentials();
     81             if (creds != null) {
     82                 return creds.getUserPrincipal();
     83             }
     84         }
     85         return null;
     86     }
     87 
     88 }
     89