com.adspore.splat.xep0060.models.RosterAccess.java Source code

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Here is the source code for com.adspore.splat.xep0060.models.RosterAccess.java

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/**
 * $RCSfile: $
 * $Revision: $
 * $Date: $
 *
 * Copyright (C) 2005-2008 Jive Software. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.adspore.splat.xep0060.models;

import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.QName;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xmpp.packet.JID;
import org.xmpp.packet.PacketError;

import com.adspore.splat.xep0060.Node;

/**
 * Anyone in the specified roster group(s) may subscribe and retrieve items.
 *
 * @author Matt Tucker
 */
public class RosterAccess extends AccessModel {

    private static final Logger Log = LoggerFactory.getLogger(RosterAccess.class);

    RosterAccess() {
    }

    @Override
    public boolean canSubscribe(Node node, JID owner, JID subscriber) {
        // Let node owners and sysadmins always subscribe to the node
        if (node.isAdmin(owner)) {
            return true;
        }

        for (JID nodeOwner : node.getOwners()) {
            if (nodeOwner.equals(owner)) {
                return true;
            }
        }
        //   TODO:  Need means of pulling user's roster or querying base component.
        //        // Check that the subscriber is a local user
        //        CentralAdapter server = CentralAdapter.getInstance();
        //        if (server.isLocal(owner)) {
        //            GroupManager gMgr = GroupManager.getInstance();
        //           Collection<String> nodeGroups = node.getRosterGroupsAllowed();
        //           for (String groupName : nodeGroups) {
        //              try {
        //                 Group group = gMgr.getGroup(groupName);
        //                 // access allowed if the node group is visible to the subscriber
        //                 if (server.getRosterManager().isGroupVisible(group, owner)) {
        //                    return true;
        //                 }
        //              } catch (GroupNotFoundException gnfe){ 
        //                 // ignore
        //              }
        //           }
        //        }
        //        else {
        //            // Subscriber is a remote user. This should never happen.
        //            Log.warn("Node with access model Roster has a remote user as subscriber: " +
        //                    node.getNodeID());
        //        }
        return false;
    }

    @Override
    public boolean canAccessItems(Node node, JID owner, JID subscriber) {
        return canSubscribe(node, owner, subscriber);
    }

    @Override
    public String getName() {
        return "roster";
    }

    @Override
    public PacketError.Condition getSubsriptionError() {
        return PacketError.Condition.not_authorized;
    }

    @Override
    public Element getSubsriptionErrorDetail() {
        return DocumentHelper
                .createElement(QName.get("not-in-roster-group", "http://jabber.org/protocol/pubsub#errors"));
    }

    @Override
    public boolean isAuthorizationRequired() {
        return false;
    }
}