/*
 *  SSHTools - Java SSH2 API
 *
 *  Copyright (C) 2002-2003 Lee David Painter and Contributors.
 *
 *  Contributions made by:
 *
 *  Brett Smith
 *  Richard Pernavas
 *  Erwin Bolwidt
 *
 *  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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package com.sshtools.j2ssh.authentication;

import java.io.IOException;

import java.util.Properties;


/**
 *
 *
 * @author $author$
 * @version $Revision: 1.15 $
 */
public abstract class SshAuthenticationClient {
    private String username;
    private SshAuthenticationPrompt prompt;

    /**
     *
     *
     * @return
     */
    public abstract String getMethodName();

    /**
     *
     *
     * @param authentication
     * @param serviceToStart
     *
     * @throws IOException
     * @throws TerminatedStateException
     */
    public abstract void authenticate(
        AuthenticationProtocolClient authentication, String serviceToStart)
        throws IOException, TerminatedStateException;

    /**
     *
     *
     * @param prompt
     *
     * @throws AuthenticationProtocolException
     */
    public void setAuthenticationPrompt(SshAuthenticationPrompt prompt)
        throws AuthenticationProtocolException {
        //prompt.setInstance(this);
        this.prompt = prompt;
    }

    /**
     *
     *
     * @return
     */
    public SshAuthenticationPrompt getAuthenticationPrompt() {
        return prompt;
    }

    /**
     *
     *
     * @param username
     */
    public void setUsername(String username) {
        this.username = username;
    }

    /**
     *
     *
     * @return
     */
    public String getUsername() {
        return username;
    }

    /**
     *
     *
     * @return
     */
    public abstract Properties getPersistableProperties();

    /**
     *
     */
    public abstract void reset();

    /**
     *
     *
     * @param properties
     */
    public abstract void setPersistableProperties(Properties properties);

    /**
     *
     *
     * @return
     */
    public abstract boolean canAuthenticate();

    /**
     *
     *
     * @return
     */
    public boolean canPrompt() {
        return prompt != null;
    }
}