DefaultRoleGenerator.java

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2008, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.picketlink.identity.federation.web.roles;

import java.io.IOException;
import java.net.URL;
import java.security.Principal;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import org.picketlink.identity.federation.core.ErrorCodes;
import org.picketlink.identity.federation.core.interfaces.RoleGenerator;
import org.picketlink.identity.federation.core.util.StringUtil;

/**
 * Simple Role Generator that looks inside a roles.properties on the classpath with format: principalName=role1,role2
 *
 * @author Anil.Saldhana@redhat.com
 * @since Aug 21, 2009
 */
public class DefaultRoleGenerator implements RoleGenerator {
    private static Properties props = new Properties();

    static {
        try {
            URL url = SecurityActions.loadResource(DefaultRoleGenerator.class, "roles.properties");
            if (url == null)
                throw new RuntimeException(ErrorCodes.RESOURCE_NOT_FOUND + "roles.properties not found");
            props.load(url.openStream());
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public List<String> generateRoles(Principal principal) {
        List<String> roles = new ArrayList<String>();

        String csv = (String) props.get(principal.getName());
        if (StringUtil.isNotNull(csv)) {
            roles.addAll(StringUtil.tokenize(csv));
        }
        return roles;
    }
}