Java tutorial
/* * ==================================================================== * 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.osgi.impl; import java.util.List; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.http.auth.AuthScope; import org.apache.http.auth.Credentials; import org.apache.http.auth.NTCredentials; import org.apache.http.auth.UsernamePasswordCredentials; import org.apache.http.client.CredentialsProvider; import org.apache.http.osgi.services.ProxyConfiguration; /** * @since 4.3 */ final class OSGiCredentialsProvider implements CredentialsProvider { private static final Log log = LogFactory.getLog(OSGiCredentialsProvider.class); private static final int HOST_AND_PORT_MATCH = 12; private static final String BASIC_SCHEME_NAME = "BASIC"; private static final String NTLM_SCHEME_NAME = "NTLM"; private final List<ProxyConfiguration> proxyConfigurations; OSGiCredentialsProvider(final List<ProxyConfiguration> proxyConfigurations) { this.proxyConfigurations = proxyConfigurations; } /** * {@inheritDoc} */ @Override public void setCredentials(final AuthScope authscope, final Credentials credentials) { // do nothing, not used in this version } /** * {@inheritDoc} */ @Override public Credentials getCredentials(final AuthScope authScope) { // iterate over all active proxy configurations at the moment of getting the credential for (final ProxyConfiguration config : proxyConfigurations) { if (config.isEnabled() && isSuitable(config, authScope)) { final String scheme = authScope.getScheme(); if (BASIC_SCHEME_NAME.equals(scheme)) { return new UsernamePasswordCredentials(config.getUsername(), config.getPassword()); } else if (NTLM_SCHEME_NAME.equals(scheme)) { return createNTCredentials(config); } else { log.debug("credentials requested for unsupported authentication scheme " + scheme); } } } // credentials no longer available! return null; } /** * {@inheritDoc} */ @Override public void clear() { // do nothing, not used in this version } // suitable configurations match at least the host and port of the AuthScope private boolean isSuitable(final ProxyConfiguration config, final AuthScope authScope) { return authScope.match(new AuthScope(config.getHostname(), config.getPort())) >= HOST_AND_PORT_MATCH; } private static Credentials createNTCredentials(final ProxyConfiguration config) { final String domainAndUsername = config.getUsername(); final String username; final String domain; final int index = domainAndUsername.indexOf("\\"); if (index > -1) { username = domainAndUsername.substring(index + 1); domain = domainAndUsername.substring(0, index); } else { username = domainAndUsername; domain = null; } return new NTCredentials(username, config.getPassword(), null, domain); } }