/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* Licensed 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.keycloak.federation.sssd.impl;
import org.jboss.logging.Logger;
import org.jvnet.libpam.PAM;
import org.jvnet.libpam.PAMException;
import org.jvnet.libpam.UnixUser;
/**
* PAMAuthenticator for Unix users
*
* @author <a href="mailto:bruno@abstractj.org">Bruno Oliveira</a>
* @version $Revision: 1 $
*/
public class PAMAuthenticator {
private static final String PAM_SERVICE = "keycloak";
private static final Logger logger = Logger.getLogger(PAMAuthenticator.class);
private final String username;
private final String[] factors;
public PAMAuthenticator(String username, String... factors) {
this.username = username;
this.factors = factors;
}
/**
* Returns true if user was successfully authenticated against PAM
*
* @return UnixUser object if user was successfully authenticated
*/
public UnixUser authenticate() {
PAM pam = null;
UnixUser user = null;
try {
pam = new PAM(PAM_SERVICE);
user = pam.authenticate(username, factors);
} catch (PAMException e) {
logger.error("Authentication failed", e);
e.printStackTrace();
} finally {
pam.dispose();
}
return user;
}
}