001    /*
002      GRANITE DATA SERVICES
003      Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004    
005      This file is part of Granite Data Services.
006    
007      Granite Data Services is free software; you can redistribute it and/or modify
008      it under the terms of the GNU Library General Public License as published by
009      the Free Software Foundation; either version 2 of the License, or (at your
010      option) any later version.
011    
012      Granite Data Services is distributed in the hope that it will be useful, but
013      WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015      for more details.
016    
017      You should have received a copy of the GNU Library General Public License
018      along with this library; if not, see <http://www.gnu.org/licenses/>.
019    */
020    
021    package org.granite.gravity.adapters;
022    
023    import org.granite.gravity.Channel;
024    
025    import flex.messaging.messages.Message;
026    
027    /**
028     * A SecurityPolicy which allows everything, provided that the Channel isn't null. This
029     * security policy is used by default unless a custom one is configured in the services-config.xml
030     * of the current application.
031     * <br><br>
032     * Example (services-config.xml):
033     * <pre>
034     * ...
035     * &lt;adapters&gt;
036     *   &lt;adapter-definition
037     *     id="default" class="org.granite.gravity.adapters.SimpleServiceAdapter"
038     *     default="true"&gt;
039     *     &lt;properties&gt;
040     *       &lt;security-policy&gt;path.to.MySecurityPolicy&lt;/security-policy&gt;
041     *     &lt;/properties&gt;
042     *   &lt;/adapter-definition&gt;
043     * &lt;/adapters&gt;
044     * ...
045     * </pre>
046     * 
047     * @author Franck WOLFF
048     */
049    public class DefaultSecurityPolicy implements SecurityPolicy {
050    
051            public boolean canCreate(Channel client, String channel, Message message) {
052            return client != null;
053            }
054    
055            public boolean canSubscribe(Channel client, String channel, Message messsage) {
056            return client != null;
057            }
058    
059            public boolean canPublish(Channel client, String channel, Message messsage) {
060            return client != null;
061            }
062    }