TransformedUsernamePasswordCredentialToPrincipalResolver.java

/**
 * Copyright (C) 2015 Caratarse Auth Team <lucio.benfante@gmail.com>
 *
 * This file is part of Caratarse Auth support for CAS.
 *
 * 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.caratarse.auth.cas.support;

import org.jasig.cas.authentication.handler.PrincipalNameTransformer;
import org.jasig.cas.authentication.principal.AbstractPersonDirectoryCredentialsToPrincipalResolver;
import org.jasig.cas.authentication.principal.Credentials;
import org.jasig.cas.authentication.principal.UsernamePasswordCredentials;

/**
 * A principal resolver managing transformed principal ids.
 *
 * @author Lucio Benfante <lucio@benfante.com>
 */
public class TransformedUsernamePasswordCredentialToPrincipalResolver extends AbstractPersonDirectoryCredentialsToPrincipalResolver {
    private PrincipalNameTransformer principalNameTransformer;

    public PrincipalNameTransformer getPrincipalNameTransformer() {
        return principalNameTransformer;
    }

    public void setPrincipalNameTransformer(PrincipalNameTransformer principalNameTransformer) {
        this.principalNameTransformer = principalNameTransformer;
    }

    @Override
    protected String extractPrincipalId(final Credentials credentials) {
        final UsernamePasswordCredentials usernamePasswordCredentials = (UsernamePasswordCredentials) credentials;
        return principalNameTransformer.transform(usernamePasswordCredentials.getUsername());
    }

    /**
     * Return true if Credentials are UsernamePasswordCredentials, false
     * otherwise.
     */
    @Override
    public boolean supports(final Credentials credentials) {
        return credentials != null
                && UsernamePasswordCredentials.class.isAssignableFrom(credentials
                        .getClass());
    }

}