com.sun.mail.auth.OAuth2SaslClientFactory Maven / Gradle / Ivy
/*
* Copyright (c) 2014, 2021 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.mail.auth;
import java.security.Provider;
import java.security.Security;
import java.util.Map;
import javax.security.auth.callback.CallbackHandler;
import javax.security.sasl.SaslClient;
import javax.security.sasl.SaslClientFactory;
import javax.security.sasl.SaslException;
/**
* Jakarta Mail SASL client factory for OAUTH2.
*
* @author Bill Shannon
*/
public class OAuth2SaslClientFactory implements SaslClientFactory {
private static final String PROVIDER_NAME = "Jakarta-Mail-OAuth2";
private static final String MECHANISM_NAME = "SaslClientFactory.XOAUTH2";
static class OAuth2Provider extends Provider {
private static final long serialVersionUID = -5371795551562287059L;
public OAuth2Provider() {
super(PROVIDER_NAME, 1.0, "XOAUTH2 SASL Mechanism");
put(MECHANISM_NAME, OAuth2SaslClientFactory.class.getName());
}
}
/**
* Creates a default {@code OAuth2SaslClientFactory}.
*
* @see #init()
*/
public OAuth2SaslClientFactory() {
}
@Override
public SaslClient createSaslClient(String[] mechanisms,
String authorizationId, String protocol,
String serverName, Map props,
CallbackHandler cbh) throws SaslException {
for (String m : mechanisms) {
if (m.equals("XOAUTH2"))
return new OAuth2SaslClient(props, cbh);
}
return null;
}
@Override
public String[] getMechanismNames(Map props) {
return new String[] { "XOAUTH2" };
}
/**
* Initialize this OAUTH2 provider, but only if there isn't one already.
* If we're not allowed to add this provider, just give up silently.
*/
public static void init() {
try {
if (Security.getProvider(PROVIDER_NAME) == null)
Security.addProvider(new OAuth2Provider());
} catch (SecurityException ex) {
// oh well...
}
}
}