| /* |
| * ==================================================================== |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| package org.apache.http.impl.nio.client; |
| |
| import org.apache.http.HttpConnection; |
| import org.apache.http.annotation.Immutable; |
| import org.apache.http.auth.AuthScheme; |
| import org.apache.http.auth.AuthState; |
| import org.apache.http.auth.Credentials; |
| import org.apache.http.client.UserTokenHandler; |
| import org.apache.http.client.protocol.HttpClientContext; |
| import org.apache.http.nio.conn.ManagedNHttpClientConnection; |
| import org.apache.http.protocol.HttpContext; |
| |
| import javax.net.ssl.SSLSession; |
| import java.security.Principal; |
| |
| /** |
| * Default implementation of {@link org.apache.http.client.UserTokenHandler} |
| * for asynchrounous HTTP client communication. This class will use |
| * an instance of {@link java.security.Principal} as a state object for |
| * non-blocking HTTP connections, if it can be obtained from the given |
| * execution context. This helps ensure persistent connections created with |
| * a particular user identity within a particular security context can be |
| * reused by the same user only. |
| * <p/> |
| * This implementation will use the user principle of connection based |
| * authentication schemes such as NTLM or that of the SSL session with |
| * the client authentication turned on. If both are unavailable, |
| * <code>null</code> token will be returned. |
| * |
| * @since 4.0 |
| */ |
| @Immutable |
| public class DefaultAsyncUserTokenHandler implements UserTokenHandler { |
| |
| public static final DefaultAsyncUserTokenHandler INSTANCE = new DefaultAsyncUserTokenHandler(); |
| |
| public Object getUserToken(final HttpContext context) { |
| |
| final HttpClientContext clientContext = HttpClientContext.adapt(context); |
| |
| Principal userPrincipal = null; |
| |
| final AuthState targetAuthState = clientContext.getTargetAuthState(); |
| if (targetAuthState != null) { |
| userPrincipal = getAuthPrincipal(targetAuthState); |
| if (userPrincipal == null) { |
| final AuthState proxyAuthState = clientContext.getProxyAuthState(); |
| userPrincipal = getAuthPrincipal(proxyAuthState); |
| } |
| } |
| |
| if (userPrincipal == null) { |
| final HttpConnection conn = clientContext.getConnection(); |
| if (conn.isOpen() && conn instanceof ManagedNHttpClientConnection) { |
| final SSLSession sslsession = ((ManagedNHttpClientConnection) conn).getSSLSession(); |
| if (sslsession != null) { |
| userPrincipal = sslsession.getLocalPrincipal(); |
| } |
| } |
| } |
| |
| return userPrincipal; |
| } |
| |
| private static Principal getAuthPrincipal(final AuthState authState) { |
| final AuthScheme scheme = authState.getAuthScheme(); |
| if (scheme != null && scheme.isComplete() && scheme.isConnectionBased()) { |
| final Credentials creds = authState.getCredentials(); |
| if (creds != null) { |
| return creds.getUserPrincipal(); |
| } |
| } |
| return null; |
| } |
| |
| } |