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Moonchild
102 lines
4.0 KiB
Java
102 lines
4.0 KiB
Java
/*
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* ====================================================================
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package ch.boye.httpclientandroidlib.impl.client;
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import java.security.Principal;
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import javax.net.ssl.SSLSession;
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import ch.boye.httpclientandroidlib.HttpConnection;
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import ch.boye.httpclientandroidlib.annotation.Immutable;
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import ch.boye.httpclientandroidlib.auth.AuthScheme;
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import ch.boye.httpclientandroidlib.auth.AuthState;
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import ch.boye.httpclientandroidlib.auth.Credentials;
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import ch.boye.httpclientandroidlib.client.UserTokenHandler;
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import ch.boye.httpclientandroidlib.client.protocol.HttpClientContext;
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import ch.boye.httpclientandroidlib.conn.ManagedHttpClientConnection;
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import ch.boye.httpclientandroidlib.protocol.HttpContext;
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/**
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* Default implementation of {@link UserTokenHandler}. This class will use
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* an instance of {@link Principal} as a state object for HTTP connections,
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* if it can be obtained from the given execution context. This helps ensure
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* persistent connections created with a particular user identity within
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* a particular security context can be reused by the same user only.
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* <p>
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* DefaultUserTokenHandler will use the user principle of connection
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* based authentication schemes such as NTLM or that of the SSL session
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* with the client authentication turned on. If both are unavailable,
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* <code>null</code> token will be returned.
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*
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* @since 4.0
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*/
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@Immutable
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public class DefaultUserTokenHandler implements UserTokenHandler {
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public static final DefaultUserTokenHandler INSTANCE = new DefaultUserTokenHandler();
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public Object getUserToken(final HttpContext context) {
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final HttpClientContext clientContext = HttpClientContext.adapt(context);
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Principal userPrincipal = null;
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final AuthState targetAuthState = clientContext.getTargetAuthState();
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if (targetAuthState != null) {
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userPrincipal = getAuthPrincipal(targetAuthState);
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if (userPrincipal == null) {
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final AuthState proxyAuthState = clientContext.getProxyAuthState();
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userPrincipal = getAuthPrincipal(proxyAuthState);
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}
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}
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if (userPrincipal == null) {
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final HttpConnection conn = clientContext.getConnection();
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if (conn.isOpen() && conn instanceof ManagedHttpClientConnection) {
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final SSLSession sslsession = ((ManagedHttpClientConnection) conn).getSSLSession();
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if (sslsession != null) {
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userPrincipal = sslsession.getLocalPrincipal();
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}
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}
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}
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return userPrincipal;
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}
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private static Principal getAuthPrincipal(final AuthState authState) {
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final AuthScheme scheme = authState.getAuthScheme();
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if (scheme != null && scheme.isComplete() && scheme.isConnectionBased()) {
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final Credentials creds = authState.getCredentials();
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if (creds != null) {
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return creds.getUserPrincipal();
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}
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}
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return null;
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}
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}
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