credentialcommand.java

Myjxta的源代码 基于JXTA的P2P即时通信系统

/*
*  Copyright (c) 2001 Sun Microsystems, Inc.  All rights
*  reserved.
*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions
*  are met:
*
*  1. Redistributions of source code must retain the above copyright
*  notice, this list of conditions and the following disclaimer.
*
*  2. Redistributions in binary form must reproduce the above copyright
*  notice, this list of conditions and the following discalimer in
*  the documentation and/or other materials provided with the
*  distribution.
*
*  3. The end-user documentation included with the redistribution,
*  if any, must include the following acknowledgment:
*  "This product includes software developed by the
*  Sun Microsystems, Inc. for Project JXTA."
*  Alternately, this acknowledgment may appear in the software itself,
*  if and wherever such third-party acknowledgments normally appear.
*
*  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
*  must not be used to endorse or promote products derived from this
*  software without prior written permission. For written
*  permission, please contact Project JXTA at http://www.jxta.org.
*
*  5. Products derived from this software may not be called "JXTA",
*  nor may "JXTA" appear in their name, without prior written
*  permission of Sun.
*
*  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
*  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
*  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
*  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
*  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
*  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
*  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
*  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
*  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
*  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
*  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
*  SUCH DAMAGE.
*  ====================================================================
*
*  This software consists of voluntary contributions made by many
*  individuals on behalf of Project JXTA.  For more
*  information on Project JXTA, please see
*  <http://www.jxta.org/>.
*
*  This license is based on the BSD license adopted by the Apache Foundation.
*
*  $Id: CredentialCommand.java,v 1.2 2007/01/26 21:54:29 bondolo Exp $
*/

package net.jxta.myjxta.plugins.secureonetoone;

import net.jxta.document.StructuredDocument;
import net.jxta.document.StructuredTextDocument;
import net.jxta.endpoint.TextDocumentMessageElement;
import net.jxta.myjxta.dialog.Dialog;
import net.jxta.myjxta.dialog.DialogMessage;
import net.jxta.myjxta.dialog.commands.AbstractCommand;
import net.jxta.myjxta.util.CredentialUtil;
import net.jxta.myjxta.util.Group;
import net.jxta.peergroup.PeerGroup;
import java.util.logging.Level;
import net.jxta.logging.Logging;
import java.util.logging.Logger;

/**
 * @author james todd [gonzo at jxta dot org]
 * @version $Id: CredentialCommand.java,v 1.2 2007/01/26 21:54:29 bondolo Exp $
 */

public class CredentialCommand
        extends AbstractCommand {

    public static final String ID = "net.jxta.myjxta.dialog.commands.CredentialCommand";
    public static final String CREDENTIAL = "credential";
    private static final Logger LOG = Logger.getLogger(CredentialCommand.class.getName());

    public String getId() {
        if (Logging.SHOW_INFO && LOG.isLoggable(Level.INFO)) {
            LOG.info("returning id: " + ID);
        }

        return ID;
    }

    public boolean process(Dialog dialog, DialogMessage msg) {
        if (Logging.SHOW_INFO && LOG.isLoggable(Level.INFO)) {
            LOG.info("process: " + (msg != null ? msg.toString()
                                                : null));
        }

        String cmd = msg != null ? msg.getCommand() : null;
        Group g = dialog.getGroup();
        PeerGroup pg = g.getPeerGroup();
        DialogMessage dm = new DialogMessage(pg.getPeerName(), null,
                pg.getPeerGroupID().toString(), pg.getPeerGroupName());

        if (cmd != null &&
                cmd.length() > 0) {
            if (Logging.SHOW_INFO && LOG.isLoggable(Level.INFO)) {
                LOG.info("processing command: " + cmd);
            }

            setCommand(cmd);

            StructuredDocument d =
                    CredentialUtil.getCredential(dialog.getMyJXTA().getView(), g);
            TextDocumentMessageElement te = d != null ?
                    new TextDocumentMessageElement(CREDENTIAL,
                            (StructuredTextDocument) d, null) :
                    null;

            if (te != null) {
                setReply("credential:" + CREDENTIAL);
                setStatus(true);

                dm.setCommand(getResponse());
                dm.addMessageElement(CREDENTIAL, te);

                if (Logging.SHOW_INFO && LOG.isLoggable(Level.INFO)) {
                    LOG.info("results: " + dm);
                }
            } else {
                if (Logging.SHOW_SEVERE && LOG.isLoggable(Level.SEVERE)) {
                    LOG.severe("can\'t construct document");
                }
            }
        } else {
            if (Logging.SHOW_SEVERE && LOG.isLoggable(Level.SEVERE)) {
                LOG.severe("invalid command: " + cmd);
            }
        }

        if (Logging.SHOW_INFO && LOG.isLoggable(Level.INFO)) {
            LOG.info("dispatching: " + (dm.toString()));
        }

        dialog.dispatch(dm);

        if (Logging.SHOW_INFO && LOG.isLoggable(Level.INFO)) {
            LOG.info("dispatching: " + getStatus());
        }

        return getStatus();
    }
}