org.eclipse.aether.transport.http.DeferredCredentialsProvider Maven / Gradle / Ivy
/*
* 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.eclipse.aether.transport.http;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
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.impl.client.BasicCredentialsProvider;
import org.eclipse.aether.repository.AuthenticationContext;
/**
* Credentials provider that defers calls into the auth context until authentication is actually requested.
*/
final class DeferredCredentialsProvider implements CredentialsProvider {
private final CredentialsProvider delegate;
private final Map factories;
DeferredCredentialsProvider() {
delegate = new BasicCredentialsProvider();
factories = new HashMap<>();
}
public void setCredentials(AuthScope authScope, Factory factory) {
factories.put(authScope, factory);
}
@Override
public void setCredentials(AuthScope authScope, Credentials credentials) {
delegate.setCredentials(authScope, credentials);
}
@Override
public Credentials getCredentials(AuthScope authScope) {
synchronized (factories) {
for (Iterator> it =
factories.entrySet().iterator();
it.hasNext(); ) {
Map.Entry entry = it.next();
if (authScope.match(entry.getKey()) >= 0) {
it.remove();
delegate.setCredentials(entry.getKey(), entry.getValue().newCredentials());
}
}
}
return delegate.getCredentials(authScope);
}
@Override
public void clear() {
delegate.clear();
}
interface Factory {
Credentials newCredentials();
}
static class BasicFactory implements Factory {
private final AuthenticationContext authContext;
BasicFactory(AuthenticationContext authContext) {
this.authContext = authContext;
}
@Override
public Credentials newCredentials() {
String username = authContext.get(AuthenticationContext.USERNAME);
if (username == null) {
return null;
}
String password = authContext.get(AuthenticationContext.PASSWORD);
return new UsernamePasswordCredentials(username, password);
}
}
static class NtlmFactory implements Factory {
private final AuthenticationContext authContext;
NtlmFactory(AuthenticationContext authContext) {
this.authContext = authContext;
}
@Override
public Credentials newCredentials() {
String username = authContext.get(AuthenticationContext.USERNAME);
if (username == null) {
return null;
}
String password = authContext.get(AuthenticationContext.PASSWORD);
String domain = authContext.get(AuthenticationContext.NTLM_DOMAIN);
String workstation = authContext.get(AuthenticationContext.NTLM_WORKSTATION);
if (domain == null) {
int backslash = username.indexOf('\\');
if (backslash < 0) {
domain = guessDomain();
} else {
domain = username.substring(0, backslash);
username = username.substring(backslash + 1);
}
}
if (workstation == null) {
workstation = guessWorkstation();
}
return new NTCredentials(username, password, workstation, domain);
}
private static String guessDomain() {
return safeNtlmString(System.getProperty("http.auth.ntlm.domain"), System.getenv("USERDOMAIN"));
}
private static String guessWorkstation() {
String localHost = null;
try {
localHost = InetAddress.getLocalHost().getHostName();
} catch (UnknownHostException e) {
// well, we have other options to try
}
return safeNtlmString(System.getProperty("http.auth.ntlm.host"), System.getenv("COMPUTERNAME"), localHost);
}
private static String safeNtlmString(String... strings) {
for (String string : strings) {
if (string != null) {
return string;
}
}
// avoid NPE from httpclient and trigger proper auth failure instead
return "";
}
}
}