/*
* 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.
*/
package org.apache.chemistry.opencmis.client.bindings.spi;
import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.util.List;
import java.util.Map;
import org.w3c.dom.Element;
/**
* NTLM authentication provider class. USE WITH CARE!
*
* This authentication provider sets a {@link java.net.Authenticator} which will
* replace the current authenticator, if any. It will fail if this authenticator
* will be replaced by another part of the code.
*
* Since {@link java.net.Authenticator} is a system-wide authenticator, it will
* not reliably work in multi-user environments! To achieve that you have to
* wrap OpenCMIS into its own class loader.
*/
public class NTLMAuthenticationProvider extends AbstractAuthenticationProvider {
private static final long serialVersionUID = 1L;
// java.net.Authenticator is static, so this can be static too
private static final OpenCMISAuthenticator authenticator = new OpenCMISAuthenticator();
static {
Authenticator.setDefault(authenticator);
}
@Override
public Map<String, List<String>> getHTTPHeaders(String url) {
// get user and password
String user = getUser();
String password = getPassword();
// if no user is set, reset the authenticator
if (user == null) {
authenticator.reset();
return null;
}
if (password == null) {
password = "";
}
// set user and password
authenticator.setPasswordAuthentication(user, password);
// OpenCMIS is not in charge of the authentication
// -> no HTTP header to set
return null;
}
@Override
public Element getSOAPHeaders(Object portObject) {
// no SOAP headers to set
return null;
}
/**
* OpenCMIS Authenticator class.
*/
static class OpenCMISAuthenticator extends Authenticator {
private PasswordAuthentication passwordAuthentication;
/**
* Resets the user and password. The next request will not be
* authenticated.
*/
public synchronized void reset() {
passwordAuthentication = null;
}
/**
* Sets a new user and password.
*/
public synchronized void setPasswordAuthentication(String user, String password) {
passwordAuthentication = new PasswordAuthentication(user, password.toCharArray());
}
@Override
protected synchronized PasswordAuthentication getPasswordAuthentication() {
return passwordAuthentication;
}
}
}