/**
* $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 org.jivesoftware.openfire.pubsub.models;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.QName;
import org.jivesoftware.openfire.XMPPServer;
import org.jivesoftware.openfire.pubsub.Node;
import org.jivesoftware.openfire.roster.Roster;
import org.jivesoftware.openfire.roster.RosterItem;
import org.jivesoftware.openfire.user.UserNotFoundException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xmpp.packet.JID;
import org.xmpp.packet.PacketError;
/**
* Anyone with a presence subscription of both or from may subscribe and retrieve items.
*
* @author Matt Tucker
*/
public class PresenceAccess extends AccessModel {
private static final Logger Log = LoggerFactory.getLogger(PresenceAccess.class);
PresenceAccess() {
}
@Override
public boolean canSubscribe(Node node, JID owner, JID subscriber) {
// Let node owners and sysadmins always subcribe to the node
if (node.isAdmin(owner)) {
return true;
}
// Get the only owner of the node
JID nodeOwner = node.getOwners().iterator().next();
// Give access to the owner of the roster :)
if (nodeOwner.toBareJID().equals(owner.toBareJID())) {
return true;
}
// Get the roster of the node owner
XMPPServer server = XMPPServer.getInstance();
// Check that the node owner is a local user
if (server.isLocal(nodeOwner)) {
try {
Roster roster = server.getRosterManager().getRoster(nodeOwner.getNode());
RosterItem item = roster.getRosterItem(owner);
// Check that the subscriber is subscribe to the node owner's presence
return item != null && (RosterItem.SUB_BOTH == item.getSubStatus() ||
RosterItem.SUB_FROM == item.getSubStatus());
}
catch (UserNotFoundException e) {
return false;
}
}
else {
// Owner of the node is a remote user. This should never happen.
Log.warn("Node with access model Presence has a remote user as owner: " +
node.getNodeID());
return false;
}
}
@Override
public boolean canAccessItems(Node node, JID owner, JID subscriber) {
return canSubscribe(node, owner, subscriber);
}
@Override
public String getName() {
return "presence";
}
@Override
public PacketError.Condition getSubsriptionError() {
return PacketError.Condition.not_authorized;
}
@Override
public Element getSubsriptionErrorDetail() {
return DocumentHelper.createElement(QName.get("presence-subscription-required",
"http://jabber.org/protocol/pubsub#errors"));
}
@Override
public boolean isAuthorizationRequired() {
return false;
}
}