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https://codeberg.org/Mercury-IM/Smack
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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@4603 b35dd754-fafc-0310-a699-88a17e54d16e
179 lines
5.7 KiB
Java
179 lines
5.7 KiB
Java
/**
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* $RCSfile$
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* $Revision: $
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* $Date: $
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*
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* Copyright 2003-2006 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.filetransfer;
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import java.util.ArrayList;
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import java.util.List;
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import org.jivesoftware.smack.PacketListener;
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import org.jivesoftware.smack.XMPPConnection;
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import org.jivesoftware.smack.filter.AndFilter;
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import org.jivesoftware.smack.filter.IQTypeFilter;
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import org.jivesoftware.smack.filter.PacketTypeFilter;
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import org.jivesoftware.smack.packet.IQ;
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import org.jivesoftware.smack.packet.Packet;
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import org.jivesoftware.smack.packet.XMPPError;
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import org.jivesoftware.smack.util.StringUtils;
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import org.jivesoftware.smackx.packet.StreamInitiation;
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/**
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* The file transfer manager class handles the sending and recieving of files.
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* To send a file invoke the {@link #createOutgoingFileTransfer(String)} method.
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* <p>
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* And to recieve a file add a file transfer listener to the manager. The
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* listener will notify you when there is a new file transfer request. To create
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* the {@link IncomingFileTransfer} object accept the transfer, or, if the
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* transfer is not desirable reject it.
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*
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* @author Alexander Wenckus
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*
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*/
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public class FileTransferManager {
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private final FileTransferNegotiator fileTransferNegotiator;
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private List listeners;
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private XMPPConnection connection;
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/**
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* Creates a file transfer manager to initiate and receive file transfers.
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*
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* @param connection
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* The XMPPConnection that the file transfers will use.
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*/
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public FileTransferManager(XMPPConnection connection) {
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this.connection = connection;
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this.fileTransferNegotiator = FileTransferNegotiator
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.getInstanceFor(connection);
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}
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/**
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* Add a file transfer listener to listen to incoming file transfer
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* requests.
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*
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* @param li
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* The listener
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* @see #removeFileTransferListener(FileTransferListener)
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* @see FileTransferListener
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*/
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public void addFileTransferListener(final FileTransferListener li) {
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if (listeners == null) {
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initListeners();
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}
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synchronized (this.listeners) {
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listeners.add(li);
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}
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}
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private void initListeners() {
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listeners = new ArrayList();
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connection.addPacketListener(new PacketListener() {
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public void processPacket(Packet packet) {
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fireNewRequest((StreamInitiation) packet);
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}
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}, new AndFilter(new PacketTypeFilter(StreamInitiation.class),
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new IQTypeFilter(IQ.Type.SET)));
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}
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protected void fireNewRequest(StreamInitiation initiation) {
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FileTransferListener[] listeners = null;
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synchronized (this.listeners) {
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listeners = new FileTransferListener[this.listeners.size()];
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this.listeners.toArray(listeners);
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}
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FileTransferRequest request = new FileTransferRequest(this, initiation);
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for (int i = 0; i < listeners.length; i++) {
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listeners[i].fileTransferRequest(request);
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}
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}
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/**
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* Removes a file transfer listener.
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*
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* @param li
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* The file transfer listener to be removed
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* @see FileTransferListener
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*/
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public void removeFileTransferListener(final FileTransferListener li) {
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if (listeners == null) {
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return;
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}
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synchronized (this.listeners) {
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listeners.remove(li);
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}
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}
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/**
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* Creates an OutgoingFileTransfer to send a file to another user.
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*
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* @param userID
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* The fully qualified jabber ID with resource of the user to
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* send the file to.
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* @return The send file object on which the negotiated transfer can be run.
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*/
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public OutgoingFileTransfer createOutgoingFileTransfer(String userID) {
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if (userID == null || StringUtils.parseName(userID).length() <= 0
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|| StringUtils.parseServer(userID).length() <= 0
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|| StringUtils.parseResource(userID).length() <= 0) {
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throw new IllegalArgumentException(
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"The provided user id was not fully qualified");
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}
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return new OutgoingFileTransfer(connection.getUser(), userID,
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fileTransferNegotiator.getNextStreamID(),
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fileTransferNegotiator);
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}
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/**
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* When the file transfer request is acceptable, this method should be
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* invoked. It will create an IncomingFileTransfer which allows the
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* transmission of the file to procede.
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*
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* @param request
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* The remote request that is being accepted.
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* @return The IncomingFileTransfer which manages the download of the file
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* from the transfer initiator.
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*/
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protected IncomingFileTransfer createIncomingFileTransfer(
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FileTransferRequest request) {
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if (request == null) {
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throw new NullPointerException("RecieveRequest cannot be null");
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}
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IncomingFileTransfer transfer = new IncomingFileTransfer(request,
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fileTransferNegotiator);
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transfer.setFileInfo(request.getFileName(), request.getFileSize());
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return transfer;
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}
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protected void rejectIncomingFileTransfer(FileTransferRequest request) {
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StreamInitiation initiation = request.getStreamInitiation();
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IQ rejection = FileTransferNegotiator.createIQ(
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initiation.getPacketID(), initiation.getFrom(), initiation
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.getTo(), IQ.Type.ERROR);
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rejection.setError(new XMPPError(XMPPError.Condition.forbidden));
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connection.sendPacket(rejection);
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}
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}
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