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378 lines
10 KiB
Java
378 lines
10 KiB
Java
/**
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* $RCSfile: Jingle.java,v $
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* $Revision: 1.1 $
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* $Date: 2007/07/02 17:41:08 $
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*
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* Copyright 2003-2007 Jive Software.
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*
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* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.packet;
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import org.jivesoftware.smack.packet.IQ;
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import org.jivesoftware.smackx.jingle.JingleActionEnum;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Iterator;
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import java.util.List;
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/**
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* An Jingle sub-packet, which is used by XMPP clients to exchange info like
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* descriptions and transports. <p/> The following link summarizes the
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* requirements of Jingle IM: <a
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* href="http://www.jabber.org/jeps/jep-0166.html">Valid tags</a>.
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* <p/>
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* <p/> Warning: this is an non-standard protocol documented by <a
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* href="http://www.jabber.org/jeps/jep-0166.html">JEP-166</a>. Because this is
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* a non-standard protocol, it is subject to change.
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*
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* @author Alvaro Saurin
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*/
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public class Jingle extends IQ {
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// static
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public static final String NAMESPACE = "urn:xmpp:tmp:jingle";
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public static final String NODENAME = "jingle";
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// non-static
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private String sid; // The session id
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private JingleActionEnum action; // The action associated to the Jingle
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private String initiator; // The initiator as a "user@host/resource"
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private String responder; // The responder
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// Sub-elements of a Jingle object.
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private final List<JingleContent> contents = new ArrayList<JingleContent>();
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private JingleContentInfo contentInfo;
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/**
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* A constructor where the main components can be initialized.
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*/
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public Jingle(final List<JingleContent> contents, final JingleContentInfo mi,
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final String sid) {
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super();
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if (contents != null) {
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contents.addAll(contents);
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}
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setContentInfo(mi);
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setSid(sid);
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// Set null all other fields in the packet
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initiator = null;
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responder = null;
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action = null;
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}
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/**
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* Constructor with a contents.
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*
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* @param content a content
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*/
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public Jingle(final JingleContent content) {
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super();
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addContent(content);
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// Set null all other fields in the packet
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initiator = null;
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responder = null;
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// Some default values for the most common situation...
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action = JingleActionEnum.UNKNOWN;
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this.setType(IQ.Type.SET);
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}
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/**
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* Constructor with a content info.
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*
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* @param info The content info
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*/
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public Jingle(final JingleContentInfo info) {
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super();
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setContentInfo(info);
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// Set null all other fields in the packet
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initiator = null;
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responder = null;
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// Some default values for the most common situation...
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action = JingleActionEnum.UNKNOWN;
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this.setType(IQ.Type.SET);
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}
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/**
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* A constructor where the action can be specified.
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*
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* @param action The action.
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*/
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public Jingle(final JingleActionEnum action) {
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this(null, null, null);
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this.action = action;
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// In general, a Jingle with an action is used in a SET packet...
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this.setType(IQ.Type.SET);
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}
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/**
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* A constructor where the session ID can be specified.
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*
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* @param sid The session ID related to the negotiation.
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* @see #setSid(String)
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*/
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public Jingle(final String sid) {
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this(null, null, sid);
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}
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/**
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* The default constructor
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*/
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public Jingle() {
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super();
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}
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/**
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* Set the session ID related to this session. The session ID is a unique
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* identifier generated by the initiator. This should match the XML Nmtoken
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* production so that XML character escaping is not needed for characters
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* such as &.
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*
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* @param sid the session ID
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*/
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public final void setSid(final String sid) {
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this.sid = sid;
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}
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/**
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* Returns the session ID related to the session. The session ID is a unique
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* identifier generated by the initiator. This should match the XML Nmtoken
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* production so that XML character escaping is not needed for characters
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* such as &.
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*
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* @return Returns the session ID related to the session.
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* @see #setSid(String)
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*/
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public String getSid() {
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return sid;
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}
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/**
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* Returns the XML element name of the extension sub-packet root element.
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* Always returns "jingle"
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*
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* @return the XML element name of the packet extension.
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*/
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public static String getElementName() {
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return NODENAME;
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}
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/**
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* Returns the XML namespace of the extension sub-packet root element.
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*
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* @return the XML namespace of the packet extension.
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*/
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public static String getNamespace() {
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return NAMESPACE;
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}
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/**
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* @return the audioInfo
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*/
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public JingleContentInfo getContentInfo() {
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return contentInfo;
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}
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/**
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* @param contentInfo the audioInfo to set
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*/
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public void setContentInfo(final JingleContentInfo contentInfo) {
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this.contentInfo = contentInfo;
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}
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/**
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* Get an iterator for the contents
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*
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* @return the contents
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*/
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public Iterator<JingleContent> getContents() {
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synchronized (contents) {
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return Collections.unmodifiableList(new ArrayList(contents)).iterator();
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}
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}
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/**
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* Get an iterator for the content
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*
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* @return the contents
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*/
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public List<JingleContent> getContentsList() {
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synchronized (contents) {
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return new ArrayList<JingleContent>(contents);
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}
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}
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/**
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* Add a new content.
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*
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* @param content the content to add
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*/
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public void addContent(final JingleContent content) {
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if (content != null) {
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synchronized (contents) {
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contents.add(content);
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}
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}
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}
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/**
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* Add a list of JingleContent elements
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*
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* @param contentList the list of contents to add
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*/
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public void addContents(final List<JingleContent> contentList) {
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if (contentList != null) {
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synchronized (contents) {
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contents.addAll(contentList);
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}
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}
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}
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/**
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* Get the action specified in the packet
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*
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* @return the action
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*/
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public JingleActionEnum getAction() {
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return action;
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}
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/**
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* Set the action in the packet
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*
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* @param action the action to set
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*/
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public void setAction(final JingleActionEnum action) {
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this.action = action;
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}
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/**
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* Get the initiator. The initiator will be the full JID of the entity that
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* has initiated the flow (which may be different to the "from" address in
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* the IQ)
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*
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* @return the initiator
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*/
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public String getInitiator() {
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return initiator;
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}
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/**
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* Set the initiator. The initiator must be the full JID of the entity that
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* has initiated the flow (which may be different to the "from" address in
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* the IQ)
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*
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* @param initiator the initiator to set
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*/
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public void setInitiator(final String initiator) {
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this.initiator = initiator;
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}
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/**
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* Get the responder. The responder is the full JID of the entity that has
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* replied to the initiation (which may be different to the "to" addresss in
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* the IQ).
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*
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* @return the responder
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*/
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public String getResponder() {
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return responder;
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}
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/**
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* Set the responder. The responder must be the full JID of the entity that
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* has replied to the initiation (which may be different to the "to"
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* addresss in the IQ).
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*
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* @param resp the responder to set
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*/
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public void setResponder(final String resp) {
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responder = resp;
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}
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/**
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* Get a hash key for the session this packet belongs to.
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*
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* @param sid The session id
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* @param initiator The initiator
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* @return A hash key
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*/
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public static int getSessionHash(final String sid, final String initiator) {
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final int PRIME = 31;
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int result = 1;
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result = PRIME * result + (initiator == null ? 0 : initiator.hashCode());
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result = PRIME * result + (sid == null ? 0 : sid.hashCode());
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return result;
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}
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/**
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* Return the XML representation of the packet.
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*
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* @return the XML string
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*/
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public String getChildElementXML() {
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StringBuilder buf = new StringBuilder();
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buf.append("<").append(getElementName());
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buf.append(" xmlns=\"").append(getNamespace()).append("\"");
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if (getInitiator() != null) {
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buf.append(" initiator=\"").append(getInitiator()).append("\"");
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}
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if (getResponder() != null) {
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buf.append(" responder=\"").append(getResponder()).append("\"");
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}
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if (getAction() != null) {
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buf.append(" action=\"").append(getAction()).append("\"");
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}
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if (getSid() != null) {
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buf.append(" sid=\"").append(getSid()).append("\"");
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}
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buf.append(">");
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synchronized (contents) {
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for (JingleContent content : contents) {
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buf.append(content.toXML());
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}
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}
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// and the same for audio jmf info
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if (contentInfo != null) {
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buf.append(contentInfo.toXML());
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}
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buf.append("</").append(getElementName()).append(">");
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return buf.toString();
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}
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}
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