passwdmembershipservice.java

jxme的一些相关程序,主要是手机上程序开发以及手机和计算机通信的一些程序资料,程序编译需要Ant支持

/*
 * 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 disclaimer 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 SUN MICROSYSTEMS 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: PasswdMembershipService.java,v 1.2 2002/03/04 21:42:58 echtcherbina Exp $
 */

package net.jxta.impl.membership;

import java.net.URL;
import java.util.Enumeration;
import java.util.Vector;
import java.util.Hashtable;

import java.net.MalformedURLException;
import java.net.UnknownServiceException;

import org.apache.log4j.Category;
import org.apache.log4j.Priority;

import net.jxta.credential.AuthenticationCredential;
import net.jxta.credential.Credential;
import net.jxta.document.Advertisement;
import net.jxta.document.Element;
import net.jxta.document.TextElement;
import net.jxta.document.MimeMediaType;
import net.jxta.document.StructuredDocument;
import net.jxta.document.StructuredDocumentFactory;
import net.jxta.protocol.PeerGroupAdvertisement;
import net.jxta.protocol.ModuleImplAdvertisement;
import net.jxta.protocol.PeerAdvertisement;
import net.jxta.id.ID;
import net.jxta.id.IDFactory;
import net.jxta.membership.Authenticator;
import net.jxta.membership.MembershipService;
import net.jxta.peer.PeerID;
import net.jxta.peergroup.PeerGroup;
import net.jxta.peergroup.PeerGroupID;
import net.jxta.platform.ModuleSpecID;
import net.jxta.service.Service;

import net.jxta.exception.JxtaError;
import net.jxta.exception.ProtocolNotSupportedException;
import net.jxta.exception.PeerGroupException;

/**
 *  The passwd membership service provides a MembershipService implementation which is
 *  based on a password scheme similar to the unix /etc/passwd system. It is
 *  intended mostly as an example of a simple MembershipService service and not as
 *  a practical MembershipService service.
 *
 * @version $Revision: 1.2 $
 * @since JXTA 1.0
 */
public class PasswdMembershipService extends MembershipService {
    private static final Category LOG = Category.getInstance(PasswdMembershipService.class.getName());

    /** This class provides the sub-class of Credential which is associated
     * with the password membership service.
     */
    private class PasswdCredential implements Credential {

        /** The MembershipService service which generated this credential.
         */
        PasswdMembershipService source;

        /** The identity associated with this credential
         */
        String whoami;

        /** The peerid associated with this credential.
         */
        ID peerid;

        /** The peerid which has been "signed" so that the identity may be verified.
         */
        String signedPeerID;

        protected PasswdCredential( PasswdMembershipService source, String whoami, String signedPeerID ) {

            this.source = (PasswdMembershipService) source;
            this.whoami = whoami;
            this.peerid = source.getPeerGroup().getPeerID();
            this.signedPeerID = signedPeerID;
        }

        protected PasswdCredential( PasswdMembershipService source, PeerGroupID peergroup, PeerID peer, String whoami, String signedPeerID ) throws PeerGroupException {

            this.source = (PasswdMembershipService) source;

            if( !source.getPeerGroup().getPeerGroupID().equals( peergroup ) )
                throw new PeerGroupException( "Cannot credential for a different peer group." );

            this.whoami = whoami;
            this.peerid = peer;
            this.signedPeerID = signedPeerID;
        }

        /**
         * Returns the service which generated this credential.
         * @return the service which generated this credential.
         */
        public MembershipService getSourceService() {
            return source;
        }

        /** Returns the PeerGroupID associated with this Credential
         * @return the PeerGroupID associated with this Credential
         */
        public ID getPeerGroupID() {
            return source.getPeerGroup().getPeerGroupID();
        }

        /** Returns the PeerID assocaited with this credential
         * @return the PeerID assocaited with this credential
         */
        public ID getPeerID() {
            return peerid;
        }

        /** Write credential into a document. as is a mime media-type specification and
         * provides the form of the document which is being requested. Two standard
         * document forms are defined. "text/text" encodes the document in a form nice
         * for printing out and "text/xml" which provides an XML format.
         * @param as The mime media type of the encoding format being requested.
         * @throws Exception in the event of errors. this exception spec needs to be narrowed.
         * @return the StructuredDocument which represents this credential.
         */
        public StructuredDocument getDocument(MimeMediaType as) throws Exception {
            StructuredDocument doc =
            StructuredDocumentFactory.newStructuredDocument( as,
            "PasswdCredential" );

            Element e = doc.createElement( "PeerGroupID", peergroup.getPeerGroupID().toString() );
            doc.appendChild( e );

            e = doc.createElement( "PeerID", peergroup.getPeerID().toString() );
            doc.appendChild( e );

            e = doc.createElement( "Identity", whoami );
            doc.appendChild( e );

            // FIXME 20010327   Do some kind of signing here based on password.
            e = doc.createElement( "ReallyInsecureSignature", signedPeerID );
            doc.appendChild( e );

            return doc;
        }

        /* From here on are the methods specific to this credential type */

        /** Returns the identity associated with this credential.
         * @return the identity associated with this credential.
         */
        public String getIdentity() {
            return whoami;
        }
    }


    /** The authenticator associated with the password membership service.
     */
    public class PasswdAuthenticator implements Authenticator {

        /** The MembershipService service which generated this authenticator.
         */
        MembershipService source;
        /** The Authentication which was provided to the Apply operation of the membership
         * service.
         */
        AuthenticationCredential application;

        /** the identity which is being claimed
         */
        String whoami = null;

        /** the password for that identity.
         */
        String password = null;

        /** Creates an authenticator for the password MembershipService service. The only method
         * supported is "PasswdAuthentication". Anything entered into the identity info
         * section of the Authentication credential is ignored.
         * @param source The instance of the password membership service which created this
         * authenticator.
         * @param application The Anything entered into the identity info section of the Authentication
         * credential is ignored.
         */
        PasswdAuthenticator( MembershipService source, AuthenticationCredential application ) {
            this.source = source;
            this.application = application;

            // XXX 20010328 [e-mail] Could do something with the authentication credential here.
        }

        /**
         * Returns the policy which generated this authenticator.
         * @return the service which generated this authenticator.
         */
        public MembershipService getSourceService() {
            return source;
        }

        /**
         * Returns true if this Authenticator has been satisfied and is ready
         * for the join operation. Some authenticators may behave in an
         * asynchronously and this method can be used to determine if the
         * authentication process has completed. This method makes no
         * distinction between incomplete authentication and failed authentication.
         * @return true if this Authenticator has been satisfied and is ready
         * for the join operation.
         */
        synchronized public boolean isReadyForJoin() {
            return ( (null != password) && (null != whoami) );
        }

        /**
         * Returns the name of this authentication method. This should be the same
         * name which was used in the Authentication credential.
         * @return the name of this authentication method.
         */
        public String getMethodName() {
            return "PasswdAuthentication";
        }

        public void setAuth1Identity( String who ) {
            whoami = who;
        }

        public String getAuth1Identity() {
            return whoami;
        }

        public void setAuth2_Password( String secret ) {
            password = secret;
        }

        private String getAuth2_Password() {
            return password;
        }

        /** Returns the AuthenticationCredential which is associated with this authenticator
         * @return  the AuthenticationCredential which is associated with this authenticator
         */
        public AuthenticationCredential getAuthenticationCredential() {
            return application;
        }
    }

    /**
     * An inner class used to create static well-known identifiers.
     */
    static class IdMaker {
        // This method serves to catch the MalformedURLException.
        // Don't know how to catch it from the static init context.
        static ID mkID( String s ) {

            try {
                return IDFactory.fromURL(new URL( "urn", "", "jxta:uuid-" + s));
            } catch (MalformedURLException absurd) {
                // Fall through.
            } catch (UnknownServiceException absurd2) {
                // Fall through.
            }
            throw new JxtaError("Hardcoded Spec and Class IDs are malformed.");
        }
    }

    /**
     * Well known service specification identifier: the standard membership
     */
    public static final ModuleSpecID passwordMembershipSpecID = (ModuleSpecID)
    IdMaker.mkID( "DeadBeefDeafBabaFeedBabe00000005"
    + "02"
    + "06" );