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/*
* Copyright (C) 2009, Google Inc.
* Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org> and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.util;
import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.util.Collection;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* Abstract authenticator which remembers prior authentications.
*/
public abstract class CachedAuthenticator extends Authenticator {
private static final Collection<CachedAuthentication> cached = new CopyOnWriteArrayList<>();
/**
* Add a cached authentication for future use.
*
* @param ca
* the information we should remember.
*/
public static void add(CachedAuthentication ca) {
cached.add(ca);
}
@Override
protected final PasswordAuthentication getPasswordAuthentication() {
final String host = getRequestingHost();
final int port = getRequestingPort();
for (CachedAuthentication ca : cached) {
if (ca.host.equals(host) && ca.port == port)
return ca.toPasswordAuthentication();
}
PasswordAuthentication pa = promptPasswordAuthentication();
if (pa != null) {
CachedAuthentication ca = new CachedAuthentication(host, port, pa
.getUserName(), new String(pa.getPassword()));
add(ca);
return ca.toPasswordAuthentication();
}
return null;
}
/**
* Prompt for and request authentication from the end-user.
*
* @return the authentication data; null if the user canceled the request
* and does not want to continue.
*/
protected abstract PasswordAuthentication promptPasswordAuthentication();
/** Authentication data to remember and reuse. */
public static class CachedAuthentication {
final String host;
final int port;
final String user;
final String pass;
/**
* Create a new cached authentication.
*
* @param aHost
* system this is for.
* @param aPort
* port number of the service.
* @param aUser
* username at the service.
* @param aPass
* password at the service.
*/
public CachedAuthentication(final String aHost, final int aPort,
final String aUser, final String aPass) {
host = aHost;
port = aPort;
user = aUser;
pass = aPass;
}
PasswordAuthentication toPasswordAuthentication() {
return new PasswordAuthentication(user, pass.toCharArray());
}
}
}
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