PenroseAuthenticator.java

/**
 * Copyright 2009 Red Hat, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package org.safehaus.penrose.management;

import org.safehaus.penrose.Penrose;
import org.safehaus.penrose.PenroseConfig;
import org.safehaus.penrose.ldap.LDAPPassword;
import org.safehaus.penrose.ldap.DN;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.management.remote.JMXAuthenticator;
import javax.management.remote.JMXPrincipal;
import javax.security.auth.Subject;
import java.rmi.server.RemoteServer;

/**
 * @author Endi S. Dewata
 */
public class PenroseAuthenticator implements JMXAuthenticator {

    public Logger log = LoggerFactory.getLogger(getClass());

    private Penrose penrose;

    public PenroseAuthenticator(Penrose penrose) {
        this.penrose = penrose;
    }

    public Subject authenticate(Object credentials) {

        boolean debug = log.isDebugEnabled();
        if (credentials == null) {
            if (debug) log.debug("Credential is null.");
            throw new SecurityException("Authentication failed.");
        }
        
        if (!(credentials instanceof String[])) {
            if (debug) log.debug("Invalid credentials: "+credentials+" ("+credentials.getClass()+")");
            throw new SecurityException("Invalid credentials: "+credentials+" ("+credentials.getClass()+")");
        }

        String s[] = (String[])credentials;
        final String bindDn = s[0];
        final String bindPassword = s[1];

        String clientHost;

        try {
            clientHost = RemoteServer.getClientHost();
        } catch (Exception e) {
            clientHost = "unknown";
        }

        if (debug) log.debug("Authenticating "+bindDn+" ("+clientHost+").");

        PenroseConfig penroseConfig = penrose.getPenroseConfig();
        DN rootDn = penroseConfig.getRootDn();
        String rootPassword = new String(penroseConfig.getRootPassword());

        try {
            if (!rootDn.matches(bindDn) ||
                    !LDAPPassword.validate(bindPassword, rootPassword)) {
                throw new SecurityException("Authentication failed.");
            }

        } catch (Exception e) {
            log.error(e.getMessage(), e);
            throw new RuntimeException(e);
        }

        Subject subject = new Subject();
        subject.getPrincipals().add(new JMXPrincipal(bindDn));

        return subject;
    }

    public Penrose getPenrose() {
        return penrose;
    }

    public void setPenrose(Penrose penrose) {
        this.penrose = penrose;
    }
}