RoomInfo.java
/**
*
* Copyright 2003-2007 Jive Software.
*
* 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.smackx.muc;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Collections;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.jivesoftware.smackx.disco.packet.DiscoverInfo;
import org.jivesoftware.smackx.xdata.Form;
import org.jivesoftware.smackx.xdata.FormField;
import org.jxmpp.jid.EntityBareJid;
import org.jxmpp.jid.Jid;
import org.jxmpp.jid.util.JidUtil;
/**
* Represents the room information that was discovered using Service Discovery. It's possible to
* obtain information about a room before joining the room but only for rooms that are public (i.e.
* rooms that may be discovered).
*
* @author Gaston Dombiak
*/
public class RoomInfo {
private static final Logger LOGGER = Logger.getLogger(RoomInfo.class.getName());
/**
* JID of the room. The localpart of the JID is commonly used as the ID of the room or name.
*/
private final EntityBareJid room;
/**
* Description of the room.
*/
private final String description;
/**
* Name of the room.
*/
private final String name;
/**
* Last known subject of the room.
*/
private final String subject;
/**
* Current number of occupants in the room.
*/
private final int occupantsCount;
/**
* A room is considered members-only if an invitation is required in order to enter the room.
* Any user that is not a member of the room won't be able to join the room unless the user
* decides to register with the room (thus becoming a member).
*/
private final boolean membersOnly;
/**
* Moderated rooms enable only participants to speak. Users that join the room and aren't
* participants can't speak (they are just visitors).
*/
private final boolean moderated;
/**
* Every presence stanza can include the JID of every occupant unless the owner deactives this
* configuration.
*/
private final boolean nonanonymous;
/**
* Indicates if users must supply a password to join the room.
*/
private final boolean passwordProtected;
/**
* Persistent rooms are saved to the database to make sure that rooms configurations can be
* restored in case the server goes down.
*/
private final boolean persistent;
/**
* Maximum number of history messages returned by the room.
*/
private final int maxhistoryfetch;
/**
* Contact Address
*/
private final List<EntityBareJid> contactJid;
/**
* Natural Language for Room Discussions
*/
private final String lang;
/**
* An associated LDAP group that defined room membership. Should be an LDAP
* Distinguished Name
*/
private final String ldapgroup;
/**
* True if the room subject can be modified by participants
*/
private final Boolean subjectmod;
/**
* URL for archived discussion logs
*/
private final URL logs;
/**
* An associated pubsub node
*/
private final String pubsub;
/**
* The rooms extended configuration form;
*/
private final Form form;
RoomInfo(DiscoverInfo info) {
final Jid from = info.getFrom();
if (from != null) {
this.room = info.getFrom().asEntityBareJidIfPossible();
} else {
this.room = null;
}
// Get the information based on the discovered features
this.membersOnly = info.containsFeature("muc_membersonly");
this.moderated = info.containsFeature("muc_moderated");
this.nonanonymous = info.containsFeature("muc_nonanonymous");
this.passwordProtected = info.containsFeature("muc_passwordprotected");
this.persistent = info.containsFeature("muc_persistent");
List<DiscoverInfo.Identity> identities = info.getIdentities();
// XEP-45 6.4 is not really clear on the topic if an identity needs to
// be send together with the disco result and how to call this description.
if (!identities.isEmpty()) {
this.name = identities.get(0).getName();
} else {
LOGGER.warning("DiscoverInfo does not contain any Identity: " + info.toXML(null));
this.name = "";
}
String subject = "";
int occupantsCount = -1;
String description = "";
int maxhistoryfetch = -1;
List<EntityBareJid> contactJid = null;
String lang = null;
String ldapgroup = null;
Boolean subjectmod = null;
URL logs = null;
String pubsub = null;
// Get the information based on the discovered extended information
form = Form.getFormFrom(info);
if (form != null) {
FormField descField = form.getField("muc#roominfo_description");
if (descField != null && !descField.getValues().isEmpty()) {
// Prefer the extended result description
description = descField.getFirstValue();
}
FormField subjField = form.getField("muc#roominfo_subject");
if (subjField != null && !subjField.getValues().isEmpty()) {
subject = subjField.getFirstValue();
}
FormField occCountField = form.getField("muc#roominfo_occupants");
if (occCountField != null && !occCountField.getValues().isEmpty()) {
occupantsCount = Integer.parseInt(occCountField.getFirstValue());
}
FormField maxhistoryfetchField = form.getField("muc#maxhistoryfetch");
if (maxhistoryfetchField != null && !maxhistoryfetchField.getValues().isEmpty()) {
maxhistoryfetch = Integer.parseInt(maxhistoryfetchField.getFirstValue());
}
FormField contactJidField = form.getField("muc#roominfo_contactjid");
if (contactJidField != null && !contactJidField.getValues().isEmpty()) {
List<CharSequence> contactJidValues = contactJidField.getValues();
contactJid = JidUtil.filterEntityBareJidList(JidUtil.jidSetFrom(contactJidValues));
}
FormField langField = form.getField("muc#roominfo_lang");
if (langField != null && !langField.getValues().isEmpty()) {
lang = langField.getFirstValue();
}
FormField ldapgroupField = form.getField("muc#roominfo_ldapgroup");
if (ldapgroupField != null && !ldapgroupField.getValues().isEmpty()) {
ldapgroup = ldapgroupField.getFirstValue();
}
FormField subjectmodField = form.getField("muc#roominfo_subjectmod");
if (subjectmodField != null && !subjectmodField.getValues().isEmpty()) {
subjectmod = Boolean.valueOf(subjectmodField.getFirstValue());
}
FormField urlField = form.getField("muc#roominfo_logs");
if (urlField != null && !urlField.getValues().isEmpty()) {
String urlString = urlField.getFirstValue();
try {
logs = new URL(urlString);
} catch (MalformedURLException e) {
LOGGER.log(Level.SEVERE, "Could not parse URL", e);
}
}
FormField pubsubField = form.getField("muc#roominfo_pubsub");
if (pubsubField != null && !pubsubField.getValues().isEmpty()) {
pubsub = pubsubField.getFirstValue();
}
}
this.description = description;
this.subject = subject;
this.occupantsCount = occupantsCount;
this.maxhistoryfetch = maxhistoryfetch;
this.contactJid = contactJid;
this.lang = lang;
this.ldapgroup = ldapgroup;
this.subjectmod = subjectmod;
this.logs = logs;
this.pubsub = pubsub;
}
/**
* Returns the JID of the room whose information was discovered.
*
* @return the JID of the room whose information was discovered.
*/
public EntityBareJid getRoom() {
return room;
}
/**
* Returns the room name.
* <p>
* The name returnd here was provided as value of the name attribute
* of the returned identity within the disco#info result.
* </p>
*
* @return the name of the room.
*/
public String getName() {
return name;
}
/**
* Returns the discovered description of the room.
* <p>
* The description returned by this method was provided as value of the form
* field of the extended disco info result. It may be <code>null</code>.
* </p>
*
* @return the discovered description of the room or null
*/
public String getDescription() {
return description;
}
/**
* Returns the discovered subject of the room. The subject may be null if the room does not
* have a subject.
*
* @return the discovered subject of the room or null
*/
public String getSubject() {
return subject;
}
/**
* Returns the discovered number of occupants that are currently in the room. If this
* information was not discovered (i.e. the server didn't send it) then a value of -1 will be
* returned.
*
* @return the number of occupants that are currently in the room or -1 if that information was
* not provided by the server.
*/
public int getOccupantsCount() {
return occupantsCount;
}
/**
* Returns true if the room has restricted the access so that only members may enter the room.
*
* @return true if the room has restricted the access so that only members may enter the room.
*/
public boolean isMembersOnly() {
return membersOnly;
}
/**
* Returns true if the room enabled only participants to speak. Occupants with a role of
* visitor won't be able to speak in the room.
*
* @return true if the room enabled only participants to speak.
*/
public boolean isModerated() {
return moderated;
}
/**
* Returns true if presence packets will include the JID of every occupant.
*
* @return true if presence packets will include the JID of every occupant.
*/
public boolean isNonanonymous() {
return nonanonymous;
}
/**
* Returns true if users musy provide a valid password in order to join the room.
*
* @return true if users musy provide a valid password in order to join the room.
*/
public boolean isPasswordProtected() {
return passwordProtected;
}
/**
* Returns true if the room will persist after the last occupant have left the room.
*
* @return true if the room will persist after the last occupant have left the room.
*/
public boolean isPersistent() {
return persistent;
}
/**
* Returns the maximum number of history messages which are returned by the
* room or '-1' if this property is not reported by the room.
*
* @return the maximum number of history messages or '-1'
*/
public int getMaxHistoryFetch() {
return maxhistoryfetch;
}
/**
* Returns Contact Addresses as JIDs, if such are reported.
*
* @return a list of contact addresses for this room.
*/
public List<EntityBareJid> getContactJids() {
return Collections.unmodifiableList(contactJid);
}
/**
* Returns the natural language of the room discussion, or <code>null</code>.
*
* @return the language of the room discussion or <code>null</code>.
*/
public String getLang() {
return lang;
}
/**
* Returns an associated LDAP group that defines room membership. The
* value should be an LDAP Distinguished Name according to an
* implementation-specific or deployment-specific definition of a group.
*
* @return an associated LDAP group or <code>null</code>
*/
public String getLdapGroup() {
return ldapgroup;
}
/**
* Returns an Boolean instance with the value 'true' if the subject can be
* modified by the room participants, 'false' if not, or <code>null</code>
* if this information is reported by the room.
*
* @return an boolean that is true if the subject can be modified by
* participants or <code>null</code>
*/
public Boolean isSubjectModifiable() {
return subjectmod;
}
/**
* An associated pubsub node for this room or <code>null</code>.
*
* @return the associated pubsub node or <code>null</code>
*/
public String getPubSub() {
return pubsub;
}
/**
* Returns the URL where archived discussion logs can be found or
* <code>null</code> if there is no such URL.
*
* @return the URL where archived logs can be found or <code>null</code>
*/
public URL getLogsUrl() {
return logs;
}
/**
* Returns the form included in the extended disco info result or
* <code>null</code> if no such form was sent.
*
* @return The room info form or <code>null</code>
* @see <a
* href="http://xmpp.org/extensions/xep-0045.html#disco-roominfo">XEP-45:
* Multi User Chat - 6.5 Querying for Room Information</a>
*/
public Form getForm() {
return form;
}
}