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Code Issues Releases Wiki Activity

File Transfer. (SMACK-72) (SMACK-122)

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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@3395 b35dd754-fafc-0310-a699-88a17e54d16e
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Alex Wenckus 2006-02-03 18:44:22 +00:00 committed by alex
parent e3c264c689
commit 8d0db1a339
23 changed files with 5781 additions and 1 deletions
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1
build/resources/META-INF/smack-config.xml
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@ -7,6 +7,7 @@
<className>org.jivesoftware.smackx.ServiceDiscoveryManager</className>
<className>org.jivesoftware.smackx.XHTMLManager</className>
<className>org.jivesoftware.smackx.muc.MultiUserChat</className>
<className>org.jivesoftware.smackx.filetransfer.FileTransferManager</className>
</startupClasses>
<!-- Paket reply timeout in milliseconds -->

31
build/resources/META-INF/smack.providers
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@ -156,4 +156,35 @@
<className>org.jivesoftware.smackx.provider.MultipleAddressesProvider</className>
</extensionProvider>
<!-- FileTransfer -->
<iqProvider>
<elementName>si</elementName>
<namespace>http://jabber.org/protocol/si</namespace>
<className>org.jivesoftware.smackx.provider.StreamInitiationProvider</className>
</iqProvider>
<iqProvider>
<elementName>query</elementName>
<namespace>http://jabber.org/protocol/bytestreams</namespace>
<className>org.jivesoftware.smackx.provider.BytestreamsProvider</className>
</iqProvider>
<iqProvider>
<elementName>open</elementName>
<namespace>http://jabber.org/protocol/ibb</namespace>
<className>org.jivesoftware.smackx.provider.IBBProviders$Open</className>
</iqProvider>
<iqProvider>
<elementName>close</elementName>
<namespace>http://jabber.org/protocol/ibb</namespace>
<className>org.jivesoftware.smackx.provider.IBBProviders$Close</className>
</iqProvider>
<extensionProvider>
<elementName>data</elementName>
<namespace>http://jabber.org/protocol/ibb</namespace>
<className>org.jivesoftware.smackx.provider.IBBProviders$Data</className>
</extensionProvider>
</smackProviders>

178
documentation/extensions/filetransfer.html Normal file
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@ -0,0 +1,178 @@
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>File Transfer</title>
<link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
<div class="header">File Transfer</div><p>
The file transfer extension allows the user to transmit and receive files.
<ul>
<li><a href="#sendfile">Send a file to another user</a></li>
<li><a href="#recievefile">Recieving a file from another user</a></li>
<li><a href="#monitorprogress">Monitoring the progress of a file transfer</a></li>
</ul>
<b>JEP related:</b> <a href="http://www.jabber.org/jeps/jep-0095.html">JEP-95</a>
<a href="http://www.jabber.org/jeps/jep-0096.html">JEP-96</a>
<a href="http://www.jabber.org/jeps/jep-0065.html">JEP-65</a>
<a href="http://www.jabber.org/jeps/jep-0047.html">JEP-47</a>
<hr>
<div class="subheader"><a name="sendfile">Send a file to another user</a></div><p>
<b>Description</b><p>
A user may wish to send a file to another user. The other user has the option of acception,
rejecting, or ignoring the users request. Smack provides a simple interface in order
to enable the user to easily send a file.</p>
<b>Usage</b><p>
In order to send a file you must first construct an instance of the <b><i>FileTransferManager</b></i>
class. This class has one constructor with one parameter which is your XMPPConnection.
In order to instantiate the manager you should call <i>new FileTransferManager(connection)</i></p>
<p>Once you have your <b><i>FileTransferManager</b></i> you will need to create an outgoing
file transfer to send a file. The method to use on the <b><i>FileTransferManager</b></i>
is the <b>createOutgoingFileTransfer(userID)</b> method. The userID you provide to this
method is the fully-qualified jabber ID of the user you wish to send the file to. A
fully-qualified jabber ID consists of a node, a domain, and a resource, the user
must be connected to the resource in order to be able to recieve the file transfer.</p>
<p>Now that you have your <b><i>OutgoingFileTransfer</b></i> instance you will want
to send the file. The method to send a file is <b>sendFile(file, description)</b>. The file
you provide to this method should be a readable file on the local file system, and the description is a short
description of the file to help the user decide whether or not they would like to recieve the file.</p>
<p>For information on monitoring the progress of a file transfer see the <a href="#monitorprogress">monitoring progress</a>
section of this document.</p>
<p>Other means to send a file are also provided as part of the <b><i>OutgoingFileTransfer</b></i>. Please
consult the Javadoc for more information.</p>
<b>Examples</b><p>
In this example we can see how to send a file: <br>
<blockquote>
<pre>
<font color="#3f7f5f">// Create the file transfer manager</font>
FileTransferManager manager = new FileTransferManager(connection);
<font color="#3f7f5f">// Create the outgoing file transfer</font>
OutgoingFileTransfer transfer = manager.createOutgoingFileTransfer(<font color="#0000FF">"romeo@montague.net"</font>);
<font color="#3f7f5f">// Send the file</font>
transfer.sendFile(new File(<font color="#0000FF">"shakespeare_complete_works.txt"</font>), <font color="#0000FF">"You won't believe this!"</font>);
</pre>
</blockquote>
<hr>
<div class="subheader"><a name="recievefile">Recieving a file from another user</a></div><p>
<b>Description</b><p>
The user may wish to recieve files from another user. The process of recieving a file is event driven,
new file transfer requests are recieved from other users via a listener registered with the file transfer
manager.</p>
<b>Usage</b><p>
In order to recieve a file you must first construct an instance of the <b><i>FileTransferManager</b></i>
class. This class has one constructor with one parameter which is your XMPPConnection.
In order to instantiate the manager you should call <i>new FileTransferManager(connection)</i></p>
<p>Once you have your <b><i>FileTransferManager</b></i> you will need to register a listener
with it. The FileTransferListner interface has one method, <b>fileTransferRequest(request)</b>.
When a request is recieved through this method, you can either accept or reject the
request. To help you make your decision there are several methods in the <b><i>FileTransferRequest</b></i>
class that return information about the transfer request.</p>
<p>To accept the file transfer, call the <b>accept()</b>,
this method will create an <b><i>IncomingFileTransfer</b></i>. After you have the file transfer you may start
to transfer the file by calling the <b>recieveFile(file)</b> method.
The file provided to this method will be where the data from thefile transfer is saved.</p>
<p>Finally, to reject the file transfer the only method you need to call is <b>reject()</b>
on the <b><i>IncomingFileTransfer</b></i>.</p>
<p>For information on monitoring the progress of a file transfer see the <a href="#monitorprogress">monitoring progress</a>
section of this document.</p>
<p>Other means to recieve a file are also provided as part of the <b><i>IncomingFileTransfer</b></i>. Please
consult the Javadoc for more information.</p>
<b>Examples</b><p>
In this example we can see how to approve or reject a file transfer request: <br>
<blockquote>
<pre> <font color="#3f7f5f">// Create the file transfer manager</font>
final FileTransferManager manager = new FileTransferManager(connection);
<font color="#3f7f5f">// Create the listener</font>
manager.addFileTransferListener(new FileTransferListener() {
public void fileTransferRequest(FileTransferRequest request) {
<font color="#3f7f5f">// Check to see if the request should be accepted</font>
if(shouldAccept(request)) {
<font color="#3f7f5f">// Accept it</font>
IncomingFileTransfer transfer = request.accept();
transfer.recieveFile(new File(<font color="#0000FF">"shakespeare_complete_works.txt"</font>));
} else {
<font color="#3f7f5f">// Reject it</font>
request.reject();
}
}
});
</pre>
</blockquote>
<hr>
<div class="subheader"><a name="monitorprogress">Monitoring the progress of a file transfer</a></div><p>
<b>Description</b><p>
While a file transfer is in progress you may wish to monitor the progress of a file transfer.</p>
<b>Usage</b><p>
<p>Both the <b><i>IncomingFileTransfer</b></i> and the <b><i>OutgoingFileTransfer</b></i>
extend the <b><i>FileTransfer</b></i> class which provides several methods to monitor
how a file transfer is progressing:</p>
<ul>
<li><b>getStatus()</b> - The file transfer can be in several states, negotiating, rejected, canceled,
in progress, error, and complete. This method will return which state the file transfer is currently in.
<li><b>getProgress()</b> - if the status of the file transfer is in progress this
method will return a number between 0 and 1, 0 being the transfer has not yet started
and 1 being the transfer is complete. It may also return a -1 if the transfer is not in progress.
<li><b>isDone()</b> - Similar to getProgress() except it returns a <i>boolean</i>. If the state is
rejected, canceled, error, or complete then true will be returned and false otherwise.
<li><b>getError()</b> - If there is an error during the file transfer this method will
return the type of error that occured.
</ul>
<b>Examples</b><p>
In this example we can see how to monitor a file transfer: <br>
<blockquote>
<pre> while(!transfer.isDone()) {
if(transfer.getStatus().equals(Status.ERROR)) {
System.out.println(<font color="#0000FF">"ERROR!!! "</font> + transfer.getError());
} else {
System.out.println(transfer.getStatus());
System.out.println(transfer.getProgress());
}
sleep(1000);
}
</pre>
</blockquote>
</body>
</html>

5
documentation/extensions/intro.html
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@ -65,6 +65,11 @@
<td><a href="http://www.jabber.org/jeps/jep-0030.html">JEP-30</a></td>
<td>Allows to discover services in XMPP entities.</td>
</tr>
<tr>
<td><a href="disco.html">File Transfer</a></td>
<td><a href="http://www.jabber.org/jeps/jep-0096.html">JEP-96</a></td>
<td>Transfer files between two users over XMPP.</td>
</tr>
</table>
</body>
</html>

1
documentation/extensions/toc.html
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@ -20,6 +20,7 @@
<a href="time.html">Time Exchange</a><br>
<a href="invitation.html">Group Chat Invitations</a><br>
<a href="disco.html">Service Discovery</a><br>
<a href="filetransfer.html">File Transfer</a><br>
</p>
</body>

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source/org/jivesoftware/smack/filter/IQTypeFilter.java Normal file
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/**
*
*/
package org.jivesoftware.smack.filter;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Packet;
/**
* A filter for IQ packet types. Returns true only if the packet is an IQ packet
* and it matches the type provided in the constructor.
*
* @author Alexander Wenckus
*
*/
public class IQTypeFilter implements PacketFilter {
private IQ.Type type;
public IQTypeFilter(IQ.Type type) {
this.type = type;
}
/*
* (non-Javadoc)
*
* @see org.jivesoftware.smack.filter.PacketFilter#accept(org.jivesoftware.smack.packet.Packet)
*/
public boolean accept(Packet packet) {
return (packet instanceof IQ && ((IQ) packet).getType().equals(type));
}
}

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source/org/jivesoftware/smackx/filetransfer/Base64.java Normal file
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source/org/jivesoftware/smackx/filetransfer/FileTransfer.java Normal file
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package org.jivesoftware.smackx.filetransfer;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.jivesoftware.smack.XMPPException;
/**
* Contains the generic file information and progress related to a particular
* file transfer.
*
* @author Alexander Wenckus
*
*/
public abstract class FileTransfer {
private String fileName;
private String filePath;
private long fileSize;
private String peer;
private org.jivesoftware.smackx.filetransfer.FileTransfer.Status status;
protected FileTransferNegotiator negotiator;
protected String streamID;
protected long amountWritten = -1;
private Error error;
private Exception exception;
protected FileTransfer(String peer, String streamID,
FileTransferNegotiator negotiator) {
this.peer = peer;
this.streamID = streamID;
this.negotiator = negotiator;
}
protected void setFileInfo(String fileName, long fileSize) {
this.fileName = fileName;
this.fileSize = fileSize;
}
protected void setFileInfo(String path, String fileName, long fileSize) {
this.filePath = path;
this.fileName = fileName;
this.fileSize = fileSize;
}
/**
* Returns the size of the file being transfered.
*
* @return Returns the size of the file being transfered.
*/
public long getFileSize() {
return fileSize;
}
/**
* Returns the name of the file being transfered.
*
* @return Returns the name of the file being transfered.
*/
public String getFileName() {
return fileName;
}
/**
* Returns the local path of the file.
*
* @return Returns the local path of the file.
*/
public String getFilePath() {
return filePath;
}
/**
* Returns the JID of the peer for this file transfer.
*
* @return Returns the JID of the peer for this file transfer.
*/
public String getPeer() {
return peer;
}
/**
* Returns the progress of the file transfer as a number between 0 and 1.
*
* @return Returns the progress of the file transfer as a number between 0
* and 1.
*/
public double getProgress() {
return 0;
}
/**
* Returns true if the transfer has been cancled, if it has stopped because
* of a an error, or the transfer completed succesfully.
*
* @return Returns true if the transfer has been cancled, if it has stopped
* because of a an error, or the transfer completed succesfully.
*/
public boolean isDone() {
return status == Status.CANCLED || status == Status.ERROR
|| status == Status.COMPLETE;
}
/**
* Retuns the current status of the file transfer.
*
* @return Retuns the current status of the file transfer.
*/
public Status getStatus() {
return status;
}
protected void setError(Error type) {
this.error = type;
}
/**
* When {@link #getStatus()} returns that there was an {@link Status#ERROR}
* during the transfer, the type of error can be retrieved through this
* method.
*
* @return Returns the type of error that occured if one has occured.
*/
public Error getError() {
return error;
}
/**
* If an exception occurs asynchronously it will be stored for later
* retrival. If there is an error there maybe an exception set.
*
* @return The exception that occured or null if there was no exception.
* @see #getError()
*/
public Exception getException() {
return exception;
}
/**
* Cancels the file transfer.
*/
public abstract void cancel();
protected void setException(Exception exception) {
this.exception = exception;
}
protected final void setStatus(Status status) {
this.status = status;
}
protected void writeToStream(final InputStream in, final OutputStream out)
throws XMPPException {
final byte[] b = new byte[1000];
int count = 0;
amountWritten = 0;
try {
count = in.read(b);
} catch (IOException e) {
throw new XMPPException("error reading from input stream", e);
}
while (count != -1 && !getStatus().equals(Status.CANCLED)) {
if (getStatus().equals(Status.CANCLED)) {
return;
}
// write to the output stream
try {
out.write(b, 0, count);
} catch (IOException e) {
throw new XMPPException("error writing to output stream", e);
}
amountWritten += count;
// read more bytes from the input stream
try {
count = in.read(b);
} catch (IOException e) {
throw new XMPPException("error reading from input stream", e);
}
}
// the connection was likely terminated abrubtly if these are not
// equal
if (!getStatus().equals(Status.CANCLED) && getError() == Error.NONE
&& amountWritten != fileSize) {
this.error = Error.CONNECTION;
}
}
/**
* A class to represent the current status of the file transfer.
*
* @author Alexander Wenckus
*
*/
public static class Status {
/**
* An error occured during the transfer.
*
* @see FileTransfer#getError()
*/
public static final Status ERROR = new Status();
/**
* The file transfer is being negotiated with the peer. The party
* recieving the file has the option to accept or refuse a file transfer
* request. If they accept, then the process of stream negotiation will
* begin. If they refuse the file will not be transfered.
*
* @see #NEGOTIATING_STREAM
*/
public static final Status NEGOTIATING_TRANSFER = new Status();
/**
* The peer has refused the file transfer request halting the file
* transfer negotiation process.
*/
public static final Status REFUSED = new Status();
/**
* The stream to transfer the file is being negotiated over the chosen
* stream type. After the stream negotiating process is complete the
* status becomes negotiated.
*
* @see #NEGOTIATED
*/
public static final Status NEGOTIATING_STREAM = new Status();
/**
* After the stream negotitation has completed the intermediate state
* between the time when the negotiation is finished and the actual
* transfer begins.
*/
public static final Status NEGOTIATED = new Status();
/**
* The transfer is in progress.
*
* @see FileTransfer#getProgress()
*/
public static final Status IN_PROGRESS = new Status();
/**
* The transfer has completed successfully.
*/
public static final Status COMPLETE = new Status();
/**
* The file transfer was canceled
*/
public static final Status CANCLED = new Status();
}
public static class Error {
/**
* No error
*/
public static final Error NONE = new Error("No error");
/**
* The peer did not find any of the provided stream mechanisms
* acceptable.
*/
public static final Error NOT_ACCEPTABLE = new Error(
"The peer did not find any of the provided stream mechanisms acceptable.");
/**
* The provided file to transfer does not exist or could not be read.
*/
public static final Error BAD_FILE = new Error(
"The provided file to transfer does not exist or could not be read.");
/**
* The remote user did not respond or the connection timed out.
*/
public static final Error NO_RESPONSE = new Error(
"The remote user did not respond or the connection timed out.");
/**
* An error occured over the socket connected to send the file.
*/
public static final Error CONNECTION = new Error(
"An error occured over the socket connected to send the file.");
/**
* An error occured while sending or recieving the file
*/
protected static final Error STREAM = new Error(
"An error occured while sending or recieving the file");
private final String msg;
private Error(String msg) {
this.msg = msg;
}
/**
* Returns a String representation of this error.
*
* @return Returns a String representation of this error.
*/
public String getMessage() {
return msg;
}
public String toString() {
return msg;
}
}
}

20
source/org/jivesoftware/smackx/filetransfer/FileTransferListener.java Normal file
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/*
* Created on Jun 23, 2005
*/
package org.jivesoftware.smackx.filetransfer;
/**
* File transfers can cause several events to be raised. These events can be
* monitored through this interface.
*
* @author Alexander Wenckus
*/
public interface FileTransferListener {
/**
* A request to send a file has been recieved from another user.
*
* @param request
* The request from the other user.
*/
public void fileTransferRequest(final FileTransferRequest request);
}

162
source/org/jivesoftware/smackx/filetransfer/FileTransferManager.java Normal file
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/**
*
*/
package org.jivesoftware.smackx.filetransfer;
import java.util.ArrayList;
import java.util.List;
import org.jivesoftware.smack.PacketListener;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.filter.AndFilter;
import org.jivesoftware.smack.filter.IQTypeFilter;
import org.jivesoftware.smack.filter.PacketTypeFilter;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.packet.XMPPError;
import org.jivesoftware.smack.util.StringUtils;
import org.jivesoftware.smackx.packet.StreamInitiation;
/**
* The file transfer manager class handles the sending and recieving of files.
* To send a file invoke the {@link #createOutgoingFileTransfer(String)} method.
* <p>
* And to recieve a file add a file transfer listener to the manager. The
* listener will notify you when there is a new file transfer request. To create
* the {@link IncomingFileTransfer} object accept the transfer, or, if the
* transfer is not desirable reject it.
*
* @author Alexander Wenckus
*
*/
public class FileTransferManager {
private final FileTransferNegotiator fileTransferNegotiator;
private List listeners;
private XMPPConnection connection;
/**
* Creates a file transfer manager to initiate and receive file transfers.
*
* @param connection
* The XMPPConnection that the file transfers will use.
*/
public FileTransferManager(XMPPConnection connection) {
this.connection = connection;
this.fileTransferNegotiator = FileTransferNegotiator
.getInstanceFor(connection);
}
/**
* Add a file transfer listener to listen to incoming file transfer
* requests.
*
* @param li
* The listener
* @see #removeFileTransferListener(FileTransferListener)
* @see FileTransferListener
*/
public void addFileTransferListener(final FileTransferListener li) {
if (listeners == null) {
initListeners();
}
synchronized (this.listeners) {
listeners.add(li);
}
}
private void initListeners() {
listeners = new ArrayList();
connection.addPacketListener(new PacketListener() {
public void processPacket(Packet packet) {
fireNewRequest((StreamInitiation) packet);
}
}, new AndFilter(new PacketTypeFilter(StreamInitiation.class),
new IQTypeFilter(IQ.Type.SET)));
}
protected void fireNewRequest(StreamInitiation initiation) {
FileTransferListener[] listeners = null;
synchronized (this.listeners) {
listeners = new FileTransferListener[this.listeners.size()];
this.listeners.toArray(listeners);
}
FileTransferRequest request = new FileTransferRequest(this, initiation);
for (int i = 0; i < listeners.length; i++) {
listeners[i].fileTransferRequest(request);
}
}
/**
* Removes a file transfer listener.
*
* @param li
* The file transfer listener to be removed
* @see FileTransferListener
*/
public void removeFileTransferListener(final FileTransferListener li) {
if (listeners == null) {
return;
}
synchronized (this.listeners) {
listeners.remove(li);
}
}
/**
* Creates an OutgoingFileTransfer to send a file to another user.
*
* @param userID
* The fully qualified jabber ID with resource of the user to
* send the file to.
* @return The send file object on which the negotiated transfer can be run.
*/
public OutgoingFileTransfer createOutgoingFileTransfer(String userID) {
if (userID == null || StringUtils.parseName(userID).length() <= 0
|| StringUtils.parseServer(userID).length() <= 0
|| StringUtils.parseResource(userID).length() <= 0) {
throw new IllegalArgumentException(
"The provided user id was not fully qualified");
}
return new OutgoingFileTransfer(connection.getUser(), userID,
fileTransferNegotiator.getNextStreamID(),
fileTransferNegotiator);
}
/**
* When the file transfer request is acceptable, this method should be
* invoked. It will create an IncomingFileTransfer which allows the
* transmission of the file to procede.
*
* @param request
* The remote request that is being accepted.
* @return The IncomingFileTransfer which manages the download of the file
* from the transfer initiator.
*/
protected IncomingFileTransfer createIncomingFileTransfer(
FileTransferRequest request) {
if (request == null) {
throw new NullPointerException("RecieveRequest cannot be null");
}
IncomingFileTransfer transfer = new IncomingFileTransfer(request,
fileTransferNegotiator);
transfer.setFileInfo(request.getFileName(), request.getFileSize());
return transfer;
}
protected void rejectIncomingFileTransfer(FileTransferRequest request) {
StreamInitiation initiation = request.getStreamInitiation();
IQ rejection = FileTransferNegotiator.createIQ(
initiation.getPacketID(), initiation.getFrom(), initiation
.getTo(), IQ.Type.ERROR);
rejection.setError(new XMPPError(403));
connection.sendPacket(rejection);
}
}

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source/org/jivesoftware/smackx/filetransfer/FileTransferNegotiator.java Normal file
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/*
* Created on Jun 16, 2005
*/
package org.jivesoftware.smackx.filetransfer;
import org.jivesoftware.smack.ConnectionListener;
import org.jivesoftware.smack.PacketCollector;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.filter.PacketIDFilter;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.packet.XMPPError;
import org.jivesoftware.smackx.Form;
import org.jivesoftware.smackx.FormField;
import org.jivesoftware.smackx.ServiceDiscoveryManager;
import org.jivesoftware.smackx.packet.DataForm;
import org.jivesoftware.smackx.packet.StreamInitiation;
import java.net.URLConnection;
import java.util.*;
/**
* Manages the negotiation of file transfers according to JEP-0096. If a file is
* being sent the remote user chooses the type of stream under which the file
* will be sent.
*
* @author Alexander Wenckus
* @see <a href=http://www.jabber.org/jeps/jep-0096.html>JEP-0096: File Transfer</a>
*/
public class FileTransferNegotiator {
// Static
/**
* The XMPP namespace of the SOCKS5 bytestream
*/
public static final String BYTE_STREAM = "http://jabber.org/protocol/bytestreams";
/**
* The XMPP namespace of the In-Band bytestream
*/
public static final String INBAND_BYTE_STREAM = "http://jabber.org/protocol/ibb";
private static final String[] NAMESPACE = {
"http://jabber.org/protocol/si/profile/file-transfer",
"http://jabber.org/protocol/si", BYTE_STREAM, INBAND_BYTE_STREAM};
private static final String[] PROTOCOLS = {BYTE_STREAM, INBAND_BYTE_STREAM};
private static final Map transferObject = new HashMap();
private static final String STREAM_INIT_PREFIX = "jsi_";
protected static final String STREAM_DATA_FIELD_NAME = "stream-method";
private static final Random randomGenerator = new Random();
/**
* Returns the file transfer negotiator related to a particular connection.
* When this class is requested on a particular connection the file transfer
* service is automatically enabled.
*
* @param connection The connection for which the transfer manager is desired
* @return The IMFileTransferManager
*/
public static FileTransferNegotiator getInstanceFor(
final XMPPConnection connection) {
if (!connection.isConnected()) {
return null;
}
if (transferObject.containsKey(connection)) {
return (FileTransferNegotiator) transferObject.get(connection);
}
else {
FileTransferNegotiator transfer = new FileTransferNegotiator(
connection);
setServiceEnabled(connection, true);
transferObject.put(connection, transfer);
return transfer;
}
}
/**
* Enable the Jabber services related to file transfer on the particular
* connection.
*
* @param connection The connection on which to enable or disable the services.
* @param isEnabled True to enable, false to disable.
*/
public static void setServiceEnabled(final XMPPConnection connection,
final boolean isEnabled) {
ServiceDiscoveryManager manager = ServiceDiscoveryManager
.getInstanceFor(connection);
for (int i = 0; i < NAMESPACE.length; i++) {
if (isEnabled) {
manager.addFeature(NAMESPACE[i]);
}
else {
manager.removeFeature(NAMESPACE[i]);
}
}
}
/**
* Checks to see if all file transfer related services are enabled on the
* connection.
*
* @param connection The connection to check
* @return True if all related services are enabled, false if they are not.
*/
public static boolean isServiceEnabled(final XMPPConnection connection) {
for (int i = 0; i < NAMESPACE.length; i++) {
if (!ServiceDiscoveryManager.getInstanceFor(connection)
.includesFeature(NAMESPACE[i]))
return false;
}
return true;
}
/**
* A convience method to create an IQ packet.
*
* @param ID The packet ID of the
* @param to To whom the packet is addressed.
* @param from From whom the packet is sent.
* @param type The iq type of the packet.
* @return The created IQ packet.
*/
protected static IQ createIQ(final String ID, final String to,
final String from, final IQ.Type type) {
IQ iqPacket = new IQ() {
public String getChildElementXML() {
return null;
}
};
iqPacket.setPacketID(ID);
iqPacket.setTo(to);
iqPacket.setFrom(from);
iqPacket.setType(type);
return iqPacket;
}
/**
* Returns a collection of the supported transfer protocols.
*
* @return Returns a collection of the supported transfer protocols.
*/
public static Collection getSupportedProtocols() {
return Collections.unmodifiableList(Arrays.asList(PROTOCOLS));
}
// non-static
private final XMPPConnection connection;
private final StreamNegotiator byteStreamTransferManager;
private final StreamNegotiator inbandTransferManager;
private FileTransferNegotiator(final XMPPConnection connection) {
configureConnection(connection);
this.connection = connection;
byteStreamTransferManager = new Socks5TransferNegotiator(connection);
inbandTransferManager = new IBBTransferNegotiator(connection);
}
private void configureConnection(final XMPPConnection connection) {
connection.addConnectionListener(new ConnectionListener() {
public void connectionClosed() {
cleanup(connection);
}
public void connectionClosedOnError(Exception e) {
cleanup(connection);
}
});
}
private void cleanup(final XMPPConnection connection) {
transferObject.remove(connection);
}
/**
* Selects an appropriate stream negotiator after examining the incoming file transfer request.
*
* @param request The related file transfer request.
* @return The file transfer object that handles the transfer
* @throws XMPPException If there are either no stream methods contained in the packet, or
* there is not an appropriate stream method.
*/
public StreamNegotiator selectStreamNegotiator(
FileTransferRequest request) throws XMPPException {
StreamInitiation si = request.getStreamInitiation();
FormField streamMethodField = getStreamMethodField(si
.getFeatureNegotiationForm());
if (streamMethodField == null) {
XMPPError error = new XMPPError(400);
IQ iqPacket = createIQ(si.getPacketID(), si.getFrom(), si.getTo(),
IQ.Type.ERROR);
iqPacket.setError(error);
connection.sendPacket(iqPacket);
throw new XMPPException("No stream methods contained in packet.", error);
}
// select the appropriate protocol
StreamNegotiator selectedStreamNegotiator;
try {
selectedStreamNegotiator = selectProtocol(streamMethodField);
}
catch (XMPPException e) {
IQ iqPacket = createIQ(si.getPacketID(), si.getFrom(), si.getTo(),
IQ.Type.ERROR);
iqPacket.setError(e.getXMPPError());
connection.sendPacket(iqPacket);
throw e;
}
// return the appropriate negotiator
return selectedStreamNegotiator;
}
private FormField getStreamMethodField(DataForm form) {
FormField field = null;
for (Iterator it = form.getFields(); it.hasNext();) {
field = (FormField) it.next();
if (field.getVariable().equals(STREAM_DATA_FIELD_NAME)) {
break;
}
field = null;
}
return field;
}
private StreamNegotiator selectProtocol(final FormField field)
throws XMPPException {
String variable = null;
boolean isByteStream = false;
boolean isIBB = false;
for (Iterator it = field.getOptions(); it.hasNext();) {
variable = ((FormField.Option) it.next()).getValue();
if (variable.equals(BYTE_STREAM)) {
isByteStream = true;
}
else if (variable.equals(INBAND_BYTE_STREAM)) {
isIBB = true;
}
}
if (!isByteStream && !isIBB) {
XMPPError error = new XMPPError(400);
throw new XMPPException("No acceptable transfer mechanism", error);
}
return (isByteStream ? byteStreamTransferManager
: inbandTransferManager);
}
/**
* Reject a stream initiation request from a remote user.
*
* @param si The Stream Initiation request to reject.
*/
public void rejectStream(final StreamInitiation si) {
XMPPError error = new XMPPError(403, "Offer Declined");
IQ iqPacket = createIQ(si.getPacketID(), si.getFrom(), si.getTo(),
IQ.Type.ERROR);
iqPacket.setError(error);
connection.sendPacket(iqPacket);
}
/**
* Returns a new, unique, stream ID to identify a file transfer.
*
* @return Returns a new, unique, stream ID to identify a file transfer.
*/
public String getNextStreamID() {
StringBuffer buffer = new StringBuffer();
buffer.append(STREAM_INIT_PREFIX);
buffer.append(Math.abs(randomGenerator.nextLong()));
return buffer.toString();
}
/**
* Send a request to another user to send them a file. The other user has
* the option of, accepting, rejecting, or not responding to a received file
* transfer request.
* <p/>
* If they accept, the packet will contain the other user's choosen stream
* type to send the file across. The two choices this implementation
* provides to the other user for file transfer are <a
* href="http://www.jabber.org/jeps/jep-0065.html">SOCKS5 Bytestreams</a>,
* which is the prefered method of transfer, and <a
* href="http://www.jabber.org/jeps/jep-0047.html">In-Band Bytestreams</a>,
* which is the fallback mechanism.
* <p/>
* The other user may choose to decline the file request if they do not
* desire the file, their client does not support JEP-0096, or if there are
* no acceptable means to transfer the file.
* <p/>
* Finally, if the other user does not respond this method will return null
* after the specified timeout.
*
* @param userID The userID of the user to whom the file will be sent.
* @param streamID The unique identifier for this file transfer.
* @param fileName The name of this file. Preferably it should include an
* extension as it is used to determine what type of file it is.
* @param size The size, in bytes, of the file.
* @param desc A description of the file.
* @param responseTimeout The amount of time, in milliseconds, to wait for the remote
* user to respond. If they do not respond in time, this
* @return Returns the stream negotiator selected by the peer.
* @throws XMPPException Thrown if there is an error negotiating the file transfer.
*/
public StreamNegotiator negotiateOutgoingTransfer(final String userID,
final String streamID, final String fileName, final long size,
final String desc, int responseTimeout) throws XMPPException {
StreamInitiation si = new StreamInitiation();
si.setSesssionID(streamID);
si.setMimeType(URLConnection.guessContentTypeFromName(fileName));
StreamInitiation.File siFile = new StreamInitiation.File(fileName, size);
siFile.setDesc(desc);
si.setFile(siFile);
si.setFeatureNegotiationForm(createDefaultInitiationForm());
si.setFrom(connection.getUser());
si.setTo(userID);
si.setType(IQ.Type.SET);
PacketCollector collector = connection
.createPacketCollector(new PacketIDFilter(si.getPacketID()));
connection.sendPacket(si);
Packet siResponse = collector.nextResult(responseTimeout);
collector.cancel();
if (siResponse instanceof IQ) {
IQ iqResponse = (IQ) siResponse;
if (iqResponse.getType().equals(IQ.Type.RESULT)) {
StreamInitiation response = (StreamInitiation) siResponse;
return getUploadNegotiator((((FormField) response
.getFeatureNegotiationForm().getFields().next())
.getValues().next()).toString());
}
else if (iqResponse.getType().equals(IQ.Type.ERROR)) {
throw new XMPPException(iqResponse.getError());
}
else {
throw new XMPPException("File transfer response unreadable");
}
}
else {
return null;
}
}
private StreamNegotiator getUploadNegotiator(String selectedProtocol) {
if (selectedProtocol.equals(BYTE_STREAM)) {
return byteStreamTransferManager;
}
else if (selectedProtocol.equals(INBAND_BYTE_STREAM)) {
return inbandTransferManager;
}
else {
return null;
}
}
private DataForm createDefaultInitiationForm() {
DataForm form = new DataForm(Form.TYPE_FORM);
FormField field = new FormField(STREAM_DATA_FIELD_NAME);
field.setType(FormField.TYPE_LIST_SINGLE);
field.addOption(new FormField.Option(BYTE_STREAM));
field.addOption(new FormField.Option(INBAND_BYTE_STREAM));
form.addField(field);
return form;
}
}

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/**
*
*/
package org.jivesoftware.smackx.filetransfer;
import org.jivesoftware.smackx.packet.StreamInitiation;
/**
* A request to send a file recieved from another user.
*
* @author Alexander Wenckus
*
*/
public class FileTransferRequest {
private final StreamInitiation streamInitiation;
private final FileTransferManager manager;
/**
* A recieve request is constructed from the Stream Initiation request
* received from the initator.
*
* @param manager
* The manager handling this file transfer
*
* @param si
* The Stream initiaton recieved from the initiator.
*/
public FileTransferRequest(FileTransferManager manager, StreamInitiation si) {
this.streamInitiation = si;
this.manager = manager;
}
/**
* Returns the name of the file.
*
* @return Returns the name of the file.
*/
public String getFileName() {
return streamInitiation.getFile().getName();
}
/**
* Returns the size in bytes of the file.
*
* @return Returns the size in bytes of the file.
*/
public long getFileSize() {
return streamInitiation.getFile().getSize();
}
/**
* Returns the description of the file provided by the requestor.
*
* @return Returns the description of the file provided by the requestor.
*/
public String getDescription() {
return streamInitiation.getFile().getDesc();
}
/**
* Returns the mime-type of the file.
*
* @return Returns the mime-type of the file.
*/
public String getMimeType() {
return streamInitiation.getMimeType();
}
/**
* Returns the fully-qualified jabber ID of the user that requested this
* file transfer.
*
* @return Returns the fully-qualified jabber ID of the user that requested
* this file transfer.
*/
public String getRequestor() {
return streamInitiation.getFrom();
}
/**
* Returns the stream ID that uniquely identifies this file transfer.
*
* @return Returns the stream ID that uniquely identifies this file
* transfer.
*/
public String getStreamID() {
return streamInitiation.getSessionID();
}
/**
* Returns the stream initiation packet that was sent by the requestor which
* contains the parameters of the file transfer being transfer and also the
* methods available to transfer the file.
*
* @return Returns the stream initiation packet that was sent by the
* requestor which contains the parameters of the file transfer
* being transfer and also the methods available to transfer the
* file.
*/
protected StreamInitiation getStreamInitiation() {
return streamInitiation;
}
/**
* Accepts this file transfer and creates the incoming file transfer.
*
* @return Returns the <b><i>IncomingFileTransfer</b></i> on which the
* file transfer can be carried out.
*/
public IncomingFileTransfer accept() {
return manager.createIncomingFileTransfer(this);
}
/**
* Rejects the file transfer request.
*/
public void reject() {
manager.rejectIncomingFileTransfer(this);
}
}

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/**
*
*/
package org.jivesoftware.smackx.filetransfer;
import org.jivesoftware.smack.*;
import org.jivesoftware.smack.filter.*;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smackx.packet.IBBExtensions;
import org.jivesoftware.smackx.packet.IBBExtensions.Open;
import org.jivesoftware.smackx.packet.StreamInitiation;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* The in-band bytestream file transfer method, or IBB for short, transfers the
* file over the same XML Stream used by XMPP. It is the fall-back mechanism in
* case the SOCKS5 bytestream method of transfering files is not available.
*
* @author Alexander Wenckus
* @see <a href="http://www.jabber.org/jeps/jep-0047.html">JEP-0047: In-Band
* Bytestreams (IBB)</a>
*/
public class IBBTransferNegotiator extends StreamNegotiator {
protected static final String NAMESPACE = "http://jabber.org/protocol/ibb";
public static final int DEFAULT_BLOCK_SIZE = 4096;
private XMPPConnection connection;
/**
* The default constructor for the In-Band Bystream Negotiator.
*
* @param connection The connection which this negotiator works on.
*/
protected IBBTransferNegotiator(XMPPConnection connection) {
this.connection = connection;
}
/*
* (non-Javadoc)
*
* @see org.jivesoftware.smackx.filetransfer.StreamNegotiator#initiateDownload(org.jivesoftware.smackx.packet.StreamInitiation,
* java.io.File)
*/
public InputStream initiateIncomingStream(StreamInitiation initiation)
throws XMPPException {
StreamInitiation response = super.createInitiationAccept(initiation,
NAMESPACE);
// establish collector to await response
PacketCollector collector = connection
.createPacketCollector(new AndFilter(new FromContainsFilter(
initiation.getFrom()), new IBBSidFilter(initiation.getSessionID())));
connection.sendPacket(response);
IBBExtensions.Open openRequest = (IBBExtensions.Open) collector
.nextResult(SmackConfiguration.getPacketReplyTimeout());
if (openRequest == null) {
throw new XMPPException("No response from file transfer initiator");
}
else if (openRequest.getType().equals(IQ.Type.ERROR)) {
throw new XMPPException(openRequest.getError());
}
collector.cancel();
PacketFilter dataFilter = new AndFilter(new PacketExtensionFilter(
IBBExtensions.Data.ELEMENT_NAME, IBBExtensions.NAMESPACE),
new FromMatchesFilter(initiation.getFrom()));
PacketFilter closeFilter = new AndFilter(new PacketTypeFilter(
IBBExtensions.Close.class), new FromMatchesFilter(initiation
.getFrom()));
InputStream stream = new IBBInputStream(openRequest.getSessionID(),
dataFilter, closeFilter);
initInBandTransfer(openRequest);
return stream;
}
/**
* Creates and sends the response for the open request.
*
* @param openRequest The open request recieved from the peer.
*/
private void initInBandTransfer(final Open openRequest) {
connection.sendPacket(FileTransferNegotiator.createIQ(openRequest
.getPacketID(), openRequest.getFrom(), openRequest.getTo(),
IQ.Type.RESULT));
}
public OutputStream initiateOutgoingStream(String streamID, String initiator,
String target) throws XMPPException {
Open openIQ = new Open(streamID, DEFAULT_BLOCK_SIZE);
openIQ.setTo(target);
openIQ.setType(IQ.Type.SET);
// wait for the result from the peer
PacketCollector collector = connection
.createPacketCollector(new PacketIDFilter(openIQ.getPacketID()));
connection.sendPacket(openIQ);
IQ openResponse = (IQ) collector.nextResult();
collector.cancel();
if (openResponse == null) {
throw new XMPPException("No response from peer");
}
IQ.Type type = openResponse.getType();
if (!type.equals(IQ.Type.RESULT)) {
if (type.equals(IQ.Type.ERROR)) {
throw new XMPPException("Target returned an error",
openResponse.getError());
}
else {
throw new XMPPException("Target returned unknown response");
}
}
return new IBBOutputStream(target, streamID, DEFAULT_BLOCK_SIZE);
}
public String getNamespace() {
return NAMESPACE;
}
private class IBBOutputStream extends OutputStream {
protected byte[] buffer;
protected int count = 0;
protected int seq = 0;
private final Message template;
private final int options = Base64.DONT_BREAK_LINES;
private IQ closePacket;
private String messageID;
IBBOutputStream(String userID, String sid, int blockSize) {
if (blockSize <= 0) {
throw new IllegalArgumentException("Buffer size <= 0");
}
buffer = new byte[blockSize];
template = new Message(userID);
messageID = template.getPacketID();
template.addExtension(new IBBExtensions.Data(sid));
closePacket = createClosePacket(userID, sid);
}
private IQ createClosePacket(String userID, String sid) {
IQ packet = new IBBExtensions.Close(sid);
packet.setTo(userID);
packet.setType(IQ.Type.SET);
return packet;
}
public void write(int b) throws IOException {
if (count >= buffer.length) {
flushBuffer();
}
buffer[count++] = (byte) b;
}
public synchronized void write(byte b[], int off, int len)
throws IOException {
if (len >= buffer.length) {
throw new IllegalArgumentException(
"byte size exceeds blocksize");
}
if (len > buffer.length - count) {
flushBuffer();
}
System.arraycopy(b, off, buffer, count, len);
count += len;
}
private void flushBuffer() {
writeToXML(buffer, 0, count);
count = 0;
}
private void writeToXML(byte[] buffer, int offset, int len) {
template.setPacketID(messageID + "_" + seq);
IBBExtensions.Data ext = (IBBExtensions.Data) template
.getExtension(IBBExtensions.Data.ELEMENT_NAME,
IBBExtensions.NAMESPACE);
String enc = Base64.encodeBytes(buffer, offset, count, options);
ext.setData(enc);
ext.setSeq(seq);
connection.sendPacket(template);
seq = (seq + 1 == 65535 ? 0 : seq + 1);
}
public void close() throws IOException {
connection.sendPacket(closePacket);
}
public void flush() throws IOException {
flushBuffer();
}
public void write(byte[] b) throws IOException {
write(b, 0, b.length);
}
}
private class IBBInputStream extends InputStream implements PacketListener {
private String streamID;
private PacketCollector dataCollector;
private byte[] buffer;
private int bufferPointer;
private int seq = -1;
private boolean isDone;
private boolean isEOF;
private boolean isClosed;
private IQ closeConfirmation;
private IBBInputStream(String streamID, PacketFilter dataFilter,
PacketFilter closeFilter) {
this.streamID = streamID;
this.dataCollector = connection.createPacketCollector(dataFilter);
connection.addPacketListener(this, closeFilter);
this.bufferPointer = -1;
}
public synchronized int read() throws IOException {
if (isEOF || isClosed) {
return -1;
}
if (bufferPointer == -1 || bufferPointer >= buffer.length) {
loadBufferWait();
}
return (int) buffer[bufferPointer++];
}
public synchronized int read(byte[] b) throws IOException {
return read(b, 0, b.length);
}
public synchronized int read(byte[] b, int off, int len)
throws IOException {
if (isEOF || isClosed) {
return -1;
}
if (bufferPointer == -1 || bufferPointer >= buffer.length) {
if (!loadBufferWait()) {
isEOF = true;
return -1;
}
}
if (len - off > buffer.length - bufferPointer) {
len = buffer.length - bufferPointer;
}
System.arraycopy(buffer, bufferPointer, b, off, len);
bufferPointer += len;
return len;
}
private boolean loadBufferWait() throws IOException {
IBBExtensions.Data data;
do {
Message mess = null;
while (mess == null) {
if (isDone) {
mess = (Message) dataCollector.pollResult();
if (mess == null) {
return false;
}
}
else {
mess = (Message) dataCollector.nextResult(1000);
}
}
data = (IBBExtensions.Data) mess.getExtension(
IBBExtensions.Data.ELEMENT_NAME,
IBBExtensions.NAMESPACE);
}
while (!data.getSessionID().equals(streamID));
checkSequence((int) data.getSeq());
buffer = Base64.decode(data.getData());
bufferPointer = 0;
return true;
}
private void checkSequence(int seq) throws IOException {
if (this.seq == 65535) {
this.seq = -1;
}
if (seq - 1 != this.seq) {
cancelTransfer();
throw new IOException("Packets out of sequence");
}
else {
this.seq = seq;
}
}
private void cancelTransfer() {
cleanup();
sendCancelMessage();
}
private void cleanup() {
dataCollector.cancel();
connection.removePacketListener(this);
}
private void sendCancelMessage() {
}
public boolean markSupported() {
return false;
}
public void processPacket(Packet packet) {
IBBExtensions.Close close = (IBBExtensions.Close) packet;
if (close.getSessionID().equals(streamID)) {
isDone = true;
closeConfirmation = FileTransferNegotiator.createIQ(packet
.getPacketID(), packet.getFrom(), packet.getTo(),
IQ.Type.RESULT);
}
}
public synchronized void close() throws IOException {
if (isClosed) {
return;
}
cleanup();
if (isEOF) {
sendCloseConfirmation();
}
else {
sendCancelMessage();
}
isClosed = true;
}
private void sendCloseConfirmation() {
connection.sendPacket(closeConfirmation);
}
}
private static class IBBSidFilter implements PacketFilter {
private String sessionID;
public IBBSidFilter(String sessionID) {
if (sessionID == null) {
throw new IllegalArgumentException("StreamID cannot be null");
}
this.sessionID = sessionID;
}
public boolean accept(Packet packet) {
if (!IBBExtensions.Open.class.isInstance(packet)) {
return false;
}
IBBExtensions.Open open = (IBBExtensions.Open) packet;
String sessionID = open.getSessionID();
return (sessionID != null && sessionID.equals(this.sessionID));
}
}
}

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/**
*
*/
package org.jivesoftware.smackx.filetransfer;
import org.jivesoftware.smack.XMPPException;
import java.io.*;
/**
* An incoming file transfer is created when the
* {@link FileTransferManager#createIncomingFileTransfer(FileTransferRequest)}
* method is invoked. It is a file being sent to the local user from another
* user on the jabber network. There are two stages of the file transfer to be
* concerned with and they can be handled in different ways depending upon the
* method that is invoked on this class.
* <p/>
* The first way that a file is recieved is by calling the
* {@link #recieveFile()} method. This method, negotiates the appropriate stream
* method and then returns the <b><i>InputStream</b></i> to read the file
* data from.
* <p/>
* The second way that a file can be recieved through this class is by invoking
* the {@link #recieveFile(File)} method. This method returns immediatly and
* takes as its parameter a file on the local file system where the file
* recieved from the transfer will be put.
*
* @author Alexander Wenckus
*/
public class IncomingFileTransfer extends FileTransfer {
private FileTransferRequest recieveRequest;
private Thread transferThread;
private InputStream inputStream;
protected IncomingFileTransfer(FileTransferRequest request,
FileTransferNegotiator transferNegotiator) {
super(request.getRequestor(), request.getStreamID(), transferNegotiator);
this.recieveRequest = request;
}
/**
* Negotiates the stream method to transfer the file over and then returns
* the negotiated stream.
*
* @return The negotiated InputStream from which to read the data.
* @throws XMPPException If there is an error in the negotiation process an exception
* is thrown.
*/
public InputStream recieveFile() throws XMPPException {
if (inputStream != null) {
throw new IllegalStateException("Transfer already negotiated!");
}
try {
inputStream = negotiateStream();
}
catch (XMPPException e) {
setException(e);
throw e;
}
return inputStream;
}
/**
* This method negotitates the stream and then transfer's the file over the
* negotiated stream. The transfered file will be saved at the provided
* location.
* <p/>
* This method will return immedialtly, file transfer progress can be
* monitored through several methods:
* <p/>
* <UL>
* <LI>{@link FileTransfer#getStatus()}
* <LI>{@link FileTransfer#getProgress()}
* <LI>{@link FileTransfer#isDone()}
* </UL>
*
* @param file The location to save the file.
* @throws XMPPException
* @throws IllegalArgumentException This exception is thrown when the the provided file is
* either null, or cannot be written to.
*/
public void recieveFile(final File file) throws XMPPException {
if (file != null) {
if (!file.exists()) {
try {
file.createNewFile();
}
catch (IOException e) {
throw new XMPPException(
"Could not create file to write too", e);
}
}
if (!file.canWrite()) {
throw new IllegalArgumentException("Cannot write to provided file");
}
}
else {
throw new IllegalArgumentException("File cannot be null");
}
transferThread = new Thread(new Runnable() {
public void run() {
try {
inputStream = negotiateStream();
}
catch (XMPPException e) {
handleXMPPException(e);
return;
}
OutputStream outputStream = null;
try {
outputStream = new FileOutputStream(file);
setStatus(Status.IN_PROGRESS);
writeToStream(inputStream, outputStream);
}
catch (XMPPException e) {
setStatus(FileTransfer.Status.ERROR);
setError(Error.STREAM);
setException(e);
}
catch (FileNotFoundException e) {
setStatus(FileTransfer.Status.ERROR);
setError(Error.BAD_FILE);
setException(e);
}
if (getStatus().equals(Status.IN_PROGRESS))
setStatus(Status.COMPLETE);
try {
if (inputStream != null) {
inputStream.close();
}
if (outputStream != null) {
outputStream.close();
}
}
catch (IOException e) {
}
}
}, "File Transfer " + streamID);
transferThread.start();
}
private void handleXMPPException(XMPPException e) {
setStatus(FileTransfer.Status.ERROR);
setException(e);
}
private InputStream negotiateStream() throws XMPPException {
setStatus(Status.NEGOTIATING_TRANSFER);
StreamNegotiator streamNegotiator = negotiator
.selectStreamNegotiator(recieveRequest);
setStatus(Status.NEGOTIATING_STREAM);
InputStream inputStream = streamNegotiator
.initiateIncomingStream(recieveRequest.getStreamInitiation());
setStatus(Status.NEGOTIATED);
return inputStream;
}
public void cancel() {
setStatus(Status.CANCLED);
}
}

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/**
*
*/
package org.jivesoftware.smackx.filetransfer;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.XMPPError;
/**
* Handles the sending of a file to another user. File transfer's in jabber have
* several steps and there are several methods in this class that handle these
* steps differently.
*
* @author Alexander Wenckus
*
*/
public class OutgoingFileTransfer extends FileTransfer {
private static int RESPONSE_TIMEOUT = 60 * 1000;
/**
* Returns the time in milliseconds after which the file transfer
* negotiation process will timeout if the other user has not responded.
*
* @return Returns the time in milliseconds after which the file transfer
* negotiation process will timeout if the remote user has not
* responded.
*/
public static int getResponseTimeout() {
return RESPONSE_TIMEOUT;
}
/**
* Sets the time in milliseconds after which the file transfer negotiation
* process will timeout if the other user has not responded.
*
* @param responseTimeout
* The timeout time in milliseconds.
*/
public void setResponseTimeout(int responseTimeout) {
RESPONSE_TIMEOUT = responseTimeout;
}
private OutputStream outputStream;
private String initiator;
private Thread transferThread;
protected OutgoingFileTransfer(String initiator, String target,
String streamID, FileTransferNegotiator transferNegotiator) {
super(target, streamID, transferNegotiator);
this.initiator = initiator;
}
protected void setOutputStream(OutputStream stream) {
if (outputStream == null) {
this.outputStream = stream;
}
}
/**
* Returns the output stream connected to the peer to transfer the file. It
* is only available after it has been succesfully negotiated by the
* {@link StreamNegotiator}.
*
* @return Returns the output stream connected to the peer to transfer the
* file.
*/
protected OutputStream getOutputStream() {
if (getStatus().equals(FileTransfer.Status.NEGOTIATED)) {
return outputStream;
} else {
return null;
}
}
/**
* This method handles the negotiation of the file transfer and the stream,
* it only returns the created stream after the negotiation has been completed.
*
* @param fileName
* The name of the file that will be transmitted. It is
* preferable for this name to have an extension as it will be
* used to determine the type of file it is.
* @param fileSize
* The size in bytes of the file that will be transmitted.
* @param description
* A description of the file that will be transmitted.
* @return The OutputStream that is connected to the peer to transmit the
* file.
* @throws XMPPException
* Thrown if an error occurs during the file transfer
* negotiation process.
*/
public synchronized OutputStream sendFile(String fileName, long fileSize,
String description) throws XMPPException {
if (isDone() || outputStream != null) {
throw new IllegalStateException(
"The negotation process has already"
+ " been attempted on this file transfer");
}
try {
this.outputStream = negotiateStream(fileName, fileSize, description);
} catch (XMPPException e) {
handleXMPPException(e);
throw e;
}
return outputStream;
}
/**
* This methods handles the transfer and stream negotiation process. It
* returns immediately and its progress can be monitored through the
* {@link NegotiationProgress} callback. When the negotiation process is
* complete the OutputStream can be retrieved from the callback via the
* {@link NegotiationProgress#getOutputStream()} method.
*
* @param fileName
* The name of the file that will be transmitted. It is
* preferable for this name to have an extension as it will be
* used to determine the type of file it is.
* @param fileSize
* The size in bytes of the file that will be transmitted.
* @param description
* A description of the file that will be transmitted.
* @param progress
* A callback to monitor the progress of the file transfer
* negotiation process and to retrieve the OutputStream when it
* is complete.
*/
public synchronized void sendFile(final String fileName,
final long fileSize, final String description,
NegotiationProgress progress) {
checkTransferThread();
if (isDone() || outputStream != null) {
throw new IllegalStateException(
"The negotation process has already"
+ " been attempted for this file transfer");
}
progress.delegate = this;
transferThread = new Thread(new Runnable() {
public void run() {
try {
OutgoingFileTransfer.this.outputStream = negotiateStream(
fileName, fileSize, description);
} catch (XMPPException e) {
handleXMPPException(e);
}
}
}, "File Transfer Negotiation " + streamID);
transferThread.start();
}
private void checkTransferThread() {
if (transferThread != null && transferThread.isAlive() || isDone()) {
throw new IllegalStateException(
"File transfer in progress or has already completed.");
}
}
/**
* This method handles the stream negotiation process and transmits the file
* to the remote user. It returns immediatly and the progress of the file
* transfer can be monitored through several methods:
*
* <UL>
* <LI>{@link FileTransfer#getStatus()}
* <LI>{@link FileTransfer#getProgress()}
* <LI>{@link FileTransfer#isDone()}
* </UL>
*
* @throws XMPPException
* If there is an error during the negotiation process or the
* sending of the file.
*/
public synchronized void sendFile(final File file, final String description)
throws XMPPException {
checkTransferThread();
if (file == null || !file.exists() || !file.canRead()) {
throw new IllegalArgumentException("Could not read file");
} else {
setFileInfo(file.getAbsolutePath(), file.getName(), file.length());
}
transferThread = new Thread(new Runnable() {
public void run() {
try {
outputStream = negotiateStream(file.getName(), file
.length(), description);
} catch (XMPPException e) {
handleXMPPException(e);
return;
}
if (outputStream == null) {
return;
}
if (!getStatus().equals(Status.NEGOTIATED)) {
return;
}
setStatus(Status.IN_PROGRESS);
InputStream inputStream = null;
try {
inputStream = new FileInputStream(file);
writeToStream(inputStream, outputStream);
} catch (FileNotFoundException e) {
setStatus(FileTransfer.Status.ERROR);
setError(Error.BAD_FILE);
setException(e);
} catch (XMPPException e) {
setStatus(FileTransfer.Status.ERROR);
setException(e);
} finally {
try {
if (inputStream != null) {
inputStream.close();
}
outputStream.flush();
outputStream.close();
} catch (IOException e) {
}
}
if (getStatus().equals(Status.IN_PROGRESS)) {
setStatus(FileTransfer.Status.COMPLETE);
}
}
}, "File Transfer " + streamID);
transferThread.start();
}
private void handleXMPPException(XMPPException e) {
setStatus(FileTransfer.Status.ERROR);
XMPPError error = e.getXMPPError();
if (error != null) {
int code = error.getCode();
if (code == 403) {
setStatus(Status.REFUSED);
return;
} else if (code == 400) {
setStatus(Status.ERROR);
setError(Error.NOT_ACCEPTABLE);
}
}
setException(e);
return;
}
/**
* Returns the amount of bytes that have been sent for the file transfer. Or
* -1 if the file transfer has not started.
* <p>
* Note: This method is only useful when the {@link #sendFile(File, String)}
* method is called, as it is the only method that actualy transmits the
* file.
*
* @return Returns the amount of bytes that have been sent for the file
* transfer. Or -1 if the file transfer has not started.
*/
public long getBytesSent() {
return amountWritten;
}
private OutputStream negotiateStream(String fileName, long fileSize,
String description) throws XMPPException {
// Negotiate the file transfer profile
setStatus(Status.NEGOTIATING_TRANSFER);
StreamNegotiator streamNegotiator = negotiator.negotiateOutgoingTransfer(
getPeer(), streamID, fileName, fileSize, description,
RESPONSE_TIMEOUT);
if (streamNegotiator == null) {
setStatus(Status.ERROR);
setError(Error.NO_RESPONSE);
return null;
}
if (!getStatus().equals(Status.NEGOTIATING_TRANSFER)) {
return null;
}
// Negotiate the stream
setStatus(Status.NEGOTIATING_STREAM);
outputStream = streamNegotiator.initiateOutgoingStream(streamID,
initiator, getPeer());
if (!getStatus().equals(Status.NEGOTIATING_STREAM)) {
return null;
}
setStatus(Status.NEGOTIATED);
return outputStream;
}
public void cancel() {
setStatus(Status.CANCLED);
}
/**
* A callback class to retrive the status of an outgoing transfer
* negotiation process.
*
* @author Alexander Wenckus
*
*/
public static class NegotiationProgress {
private OutgoingFileTransfer delegate;
/**
* Returns the current status of the negotiation process.
*
* @return Returns the current status of the negotiation process.
*/
public Status getStatus() {
if (delegate == null) {
throw new IllegalStateException("delegate not yet set");
}
return delegate.getStatus();
}
/**
* Once the negotiation process is completed the output stream can be
* retrieved.
*
* @return Once the negotiation process is completed the output stream
* can be retrieved.
*
*/
public OutputStream getOutputStream() {
if (delegate == null) {
throw new IllegalStateException("delegate not yet set");
}
return delegate.getOutputStream();
}
}
}

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package org.jivesoftware.smackx.filetransfer;
import org.jivesoftware.smack.PacketCollector;
import org.jivesoftware.smack.SmackConfiguration;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.filter.AndFilter;
import org.jivesoftware.smack.filter.FromMatchesFilter;
import org.jivesoftware.smack.filter.PacketFilter;
import org.jivesoftware.smack.filter.PacketIDFilter;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.util.StringUtils;
import org.jivesoftware.smackx.ServiceDiscoveryManager;
import org.jivesoftware.smackx.packet.Bytestream;
import org.jivesoftware.smackx.packet.Bytestream.StreamHost;
import org.jivesoftware.smackx.packet.Bytestream.StreamHostUsed;
import org.jivesoftware.smackx.packet.DiscoverInfo;
import org.jivesoftware.smackx.packet.DiscoverInfo.Identity;
import org.jivesoftware.smackx.packet.DiscoverItems;
import org.jivesoftware.smackx.packet.DiscoverItems.Item;
import org.jivesoftware.smackx.packet.StreamInitiation;
import java.io.*;
import java.net.*;
import java.util.*;
/**
* A SOCKS5 bytestream is negotiated partly over the XMPP XML stream and partly
* over a seperate socket. The actual transfer though takes place over a
* seperatly created socket.
* <p/>
* A SOCKS5 file transfer generally has three parites, the initiator, the
* target, and the stream host. The stream host is a specialized SOCKS5 proxy
* setup on the server, or, the Initiator can act as the Stream Host if the
* proxy is not available.
* <p/>
* The advantage of having a seperate proxy over directly connecting to
* eachother is if the Initator and the Target are not on the same LAN and are
* operating behind NAT, the proxy allows for a common location for both parties
* to connect to and transfer the file.
* <p/>
* Smack will attempt to automatically discover any proxies present on your
* server. If any are detected they will be forwarded to any user attempting to
* recieve files from you.
*
* @author Alexander Wenckus
* @see <a href="http://www.jabber.org/jeps/jep-0065.html">JEP-0065: SOCKS5
* Bytestreams</a>
*/
public class Socks5TransferNegotiator extends StreamNegotiator {
protected static final String NAMESPACE = "http://jabber.org/protocol/bytestreams";
public static boolean isAllowLocalProxyHost = true;
private final XMPPConnection connection;
private List proxies;
private List streamHosts;
private ProxyProcess proxyProcess;
public Socks5TransferNegotiator(final XMPPConnection connection) {
this.connection = connection;
}
/*
* (non-Javadoc)
*
* @see org.jivesoftware.smackx.filetransfer.StreamNegotiator#initiateDownload(org.jivesoftware.smackx.packet.StreamInitiation,
* java.io.File)
*/
public InputStream initiateIncomingStream(StreamInitiation initiation)
throws XMPPException {
StreamInitiation response = super.createInitiationAccept(initiation,
NAMESPACE);
// establish collector to await response
PacketCollector collector = connection
.createPacketCollector(new AndFilter(new FromMatchesFilter(initiation.getFrom()),
new BytestreamSIDFilter(initiation.getSessionID())));
connection.sendPacket(response);
Bytestream streamHostsInfo = (Bytestream) collector
.nextResult(SmackConfiguration.getPacketReplyTimeout());
if (streamHostsInfo == null) {
throw new XMPPException("No response from file transfer initiator");
}
else if (streamHostsInfo.getType().equals(IQ.Type.ERROR)) {
throw new XMPPException(streamHostsInfo.getError());
}
collector.cancel();
// select appropriate host
SelectedHostInfo selectedHost = selectHost(streamHostsInfo);
// send used-host confirmation
Bytestream streamResponse = createUsedHostConfirmation(
selectedHost.selectedHost, streamHostsInfo.getFrom(),
streamHostsInfo.getTo(), streamHostsInfo.getPacketID());
connection.sendPacket(streamResponse);
try {
return selectedHost.establishedSocket.getInputStream();
}
catch (IOException e) {
throw new XMPPException("Error establishing input stream", e);
}
}
/**
* The used host confirmation is sent to the initiator to indicate to them
* which of the hosts they provided has been selected and successfully
* connected to.
*
* @param selectedHost The selected stream host.
* @param initiator The initiator of the stream.
* @param target The target of the stream.
* @param packetID The of the packet being responded to.
* @return The packet that was created to send to the initiator.
*/
private Bytestream createUsedHostConfirmation(StreamHost selectedHost,
String initiator, String target, String packetID) {
Bytestream streamResponse = new Bytestream();
streamResponse.setTo(initiator);
streamResponse.setFrom(target);
streamResponse.setType(IQ.Type.RESULT);
streamResponse.setPacketID(packetID);
streamResponse.setUsedHost(selectedHost.getJID());
return streamResponse;
}
/**
* @param streamHostsInfo
* @return
* @throws XMPPException
*/
private SelectedHostInfo selectHost(Bytestream streamHostsInfo)
throws XMPPException {
Iterator it = streamHostsInfo.getStreamHosts().iterator();
StreamHost selectedHost = null;
Socket socket = null;
while (it.hasNext()) {
selectedHost = (StreamHost) it.next();
// establish socket
try {
socket = new Socket(selectedHost.getAddress(), selectedHost
.getPort());
establishSOCKS5ConnectionToProxy(socket, createDigest(
streamHostsInfo.getSessionID(), streamHostsInfo
.getFrom(), streamHostsInfo.getTo()));
break;
}
catch (IOException e) {
e.printStackTrace();
selectedHost = null;
socket = null;
continue;
}
}
if (selectedHost == null || socket == null) {
throw new XMPPException(
"Could not establish socket with any provided host");
}
return new SelectedHostInfo(selectedHost, socket);
}
/**
* Creates the digest needed for a byte stream. It is the SHA1(sessionID +
* initiator + target).
*
* @param sessionID The sessionID of the stream negotiation
* @param initiator The inititator of the stream negotiation
* @param target The target of the stream negotiation
* @return SHA-1 hash of the three parameters
*/
private String createDigest(final String sessionID, final String initiator,
final String target) {
return StringUtils.hash(sessionID + StringUtils.parseName(initiator)
+ "@" + StringUtils.parseServer(initiator) + "/"
+ StringUtils.parseResource(initiator)
+ StringUtils.parseName(target) + "@"
+ StringUtils.parseServer(target) + "/"
+ StringUtils.parseResource(target));
}
/*
* (non-Javadoc)
*
* @see org.jivesoftware.smackx.filetransfer.StreamNegotiator#initiateUpload(java.lang.String,
* org.jivesoftware.smackx.packet.StreamInitiation, java.io.File)
*/
public OutputStream initiateOutgoingStream(String streamID, String initiator,
String target) throws XMPPException {
Socket socket;
try {
socket = initBytestreamSocket(streamID, initiator, target);
}
catch (Exception e) {
throw new XMPPException("Error establishing transfer socket", e);
}
if (socket != null) {
try {
return socket.getOutputStream();
}
catch (IOException e) {
throw new XMPPException("Error establishing output stream", e);
}
}
return null;
}
private Socket initBytestreamSocket(final String sessionID,
String initiator, String target) throws Exception {
ProxyProcess process;
try {
process = establishListeningSocket();
}
catch (IOException io) {
process = null;
}
String localIP;
try {
localIP = discoverLocalIP();
}
catch (UnknownHostException e1) {
localIP = null;
}
Bytestream query = createByteStreamInit(initiator, target, sessionID,
localIP, (process != null ? process.getPort() : 0));
// if the local host is one of the options we need to wait for the
// remote connection.
Socket conn = waitForUsedHostResponse(sessionID, process, createDigest(
sessionID, initiator, target), query).establishedSocket;
cleanupListeningSocket();
return conn;
}
/**
* Waits for the peer to respond with which host they chose to use.
*
* @param sessionID The session id of the stream.
* @param proxy The server socket which will listen locally for remote
* connections.
* @param digest
* @param query
* @return
* @throws XMPPException
* @throws IOException
*/
private SelectedHostInfo waitForUsedHostResponse(String sessionID,
final ProxyProcess proxy, final String digest,
final Bytestream query) throws XMPPException, IOException {
SelectedHostInfo info = new SelectedHostInfo();
PacketCollector collector = connection
.createPacketCollector(new PacketIDFilter(query.getPacketID()));
connection.sendPacket(query);
Packet packet = collector.nextResult();
collector.cancel();
Bytestream response;
if (packet instanceof Bytestream) {
response = (Bytestream) packet;
}
else {
throw new XMPPException("Unexpected response from remote user");
}
StreamHostUsed used = response.getUsedHost();
StreamHost usedHost = query.getStreamHost(used.getJID());
if (usedHost == null) {
throw new XMPPException("Remote user responded with unknown host");
}
// The local computer is acting as the proxy
if (used.getJID().equals(query.getFrom())) {
info.establishedSocket = proxy.getSocket(digest);
info.selectedHost = usedHost;
return info;
}
else {
info.establishedSocket = new Socket(usedHost.getAddress(), usedHost
.getPort());
establishSOCKS5ConnectionToProxy(info.establishedSocket, digest);
Bytestream activate = createByteStreamActivate(sessionID, response
.getTo(), usedHost.getJID(), response.getFrom());
collector = connection.createPacketCollector(new PacketIDFilter(
activate.getPacketID()));
connection.sendPacket(activate);
IQ serverResponse = (IQ) collector.nextResult();
collector.cancel();
if (!serverResponse.getType().equals(IQ.Type.RESULT)) {
info.establishedSocket.close();
return null;
}
return info;
}
}
private ProxyProcess establishListeningSocket() throws IOException {
if (proxyProcess == null) {
proxyProcess = new ProxyProcess(new ServerSocket(7777));
proxyProcess.start();
}
proxyProcess.addTransfer();
return proxyProcess;
}
private void cleanupListeningSocket() {
if (proxyProcess == null) {
return;
}
proxyProcess.removeTransfer();
}
private String discoverLocalIP() throws UnknownHostException {
return InetAddress.getLocalHost().getHostAddress();
}
/**
* The bytestream init looks like this:
* <p/>
* <pre>
* &lt;iq type='set'
* from='initiator@host1/foo'
* to='target@host2/bar'
* id='initiate'&gt;
* &lt;query xmlns='http://jabber.org/protocol/bytestreams'
* sid='mySID'
* mode='tcp'&gt;
* &lt;streamhost
* jid='initiator@host1/foo'
* host='192.168.4.1'
* port='5086'/&gt;
* &lt;streamhost
* jid='proxy.host3'
* host='24.24.24.1'
* zeroconf='_jabber.bytestreams'/&gt;
* &lt;/query&gt;
* &lt;/iq&gt;
* </pre>
*
* @param from initiator@host1/foo - The file transfer initiator.
* @param to target@host2/bar - The file transfer target.
* @param sid 'mySID' - the unique identifier for this file transfer
* @param localIP The IP of the local machine if it is being provided, null otherwise.
* @param port The port of the local mahine if it is being provided, null otherwise.
* @return Returns the created <b><i>Bytestream</b></i> packet
*/
private Bytestream createByteStreamInit(final String from, final String to,
final String sid, final String localIP, final int port) {
Bytestream bs = new Bytestream();
bs.setTo(to);
bs.setFrom(from);
bs.setSessionID(sid);
bs.setType(IQ.Type.SET);
bs.setMode(Bytestream.Mode.TCP);
if (localIP != null && port > 0) {
bs.addStreamHost(from, localIP, port);
}
if (proxies == null) {
initProxies();
}
if (streamHosts != null) {
Iterator it = streamHosts.iterator();
while (it.hasNext()) {
bs.addStreamHost((StreamHost) it.next());
}
}
return bs;
}
private void initProxies() {
proxies = new ArrayList();
ServiceDiscoveryManager manager = ServiceDiscoveryManager
.getInstanceFor(connection);
DiscoverItems discoItems;
try {
discoItems = manager.discoverItems(connection.getServiceName());
DiscoverItems.Item item;
DiscoverInfo info;
DiscoverInfo.Identity identity;
Iterator it = discoItems.getItems();
while (it.hasNext()) {
item = (Item) it.next();
info = manager.discoverInfo(item.getEntityID());
Iterator itx = info.getIdentities();
while (itx.hasNext()) {
identity = (Identity) itx.next();
if (identity.getCategory().equalsIgnoreCase("proxy")
&& identity.getType().equalsIgnoreCase(
"bytestreams")) {
proxies.add(info.getFrom());
}
}
}
}
catch (XMPPException e) {
return;
}
if (proxies.size() > 0) {
initStreamHosts();
}
}
private void initStreamHosts() {
List streamHosts = new ArrayList();
Iterator it = proxies.iterator();
IQ query;
PacketCollector collector;
Bytestream response;
while (it.hasNext()) {
String jid = it.next().toString();
query = new IQ() {
public String getChildElementXML() {
return "<query xmlns=\"http://jabber.org/protocol/bytestreams\"/>";
}
};
query.setType(IQ.Type.GET);
query.setTo(jid);
collector = connection.createPacketCollector(new PacketIDFilter(
query.getPacketID()));
connection.sendPacket(query);
response = (Bytestream) collector.nextResult(SmackConfiguration
.getPacketReplyTimeout());
if (response != null) {
streamHosts.addAll(response.getStreamHosts());
}
collector.cancel();
}
this.streamHosts = streamHosts;
}
/**
* Returns the packet to send notification to the stream host to activate
* the stream.
*
* @param sessionID The session ID of the file transfer to activate.
* @param from
* @param to The JID of the stream host
* @param target The JID of the file transfer target.
* @return Returns the packet to send notification to the stream host to
* activate the stream.
*/
private static Bytestream createByteStreamActivate(final String sessionID,
final String from, final String to, final String target) {
Bytestream activate = new Bytestream(sessionID);
activate.setMode(null);
activate.setToActivate(target);
activate.setFrom(from);
activate.setTo(to);
activate.setType(IQ.Type.SET);
return activate;
}
/**
* Negotiates the Socks 5 bytestream when the local computer is acting as
* the proxy.
*
* @param connection The socket connection with the peer.
* @return The SHA-1 digest that is used to uniquely identify the file
* transfer.
* @throws XMPPException
* @throws IOException
*/
private String establishSocks5UploadConnection(Socket connection) throws XMPPException, IOException {
OutputStream out = new DataOutputStream(connection.getOutputStream());
InputStream in = new DataInputStream(connection.getInputStream());
// first byte is version should be 5
int b = in.read();
if (b != 5) {
throw new XMPPException("Only SOCKS5 supported");
}
// second byte number of authentication methods supported
b = in.read();
int[] auth = new int[b];
for (int i = 0; i < b; i++) {
auth[i] = in.read();
}
int authMethod = -1;
for (int i = 0; i < auth.length; i++) {
authMethod = (auth[i] == 0 ? 0 : -1); // only auth method
// 0, no
// authentication,
// supported
if (authMethod == 0) {
break;
}
}
if (authMethod != 0) {
throw new XMPPException("Authentication method not supported");
}
byte[] cmd = new byte[2];
cmd[0] = (byte) 0x05;
cmd[1] = (byte) 0x00;
out.write(cmd);
String responseDigest = createIncomingSocks5Message(in);
cmd = createOutgoingSocks5Message(0, responseDigest);
if (!connection.isConnected()) {
throw new XMPPException("Socket closed by remote user");
}
out.write(cmd);
return responseDigest;
}
public String getNamespace() {
return NAMESPACE;
}
private void establishSOCKS5ConnectionToProxy(Socket socket, String digest)
throws IOException {
byte[] cmd = new byte[3];
cmd[0] = (byte) 0x05;
cmd[1] = (byte) 0x01;
cmd[2] = (byte) 0x00;
OutputStream out = new DataOutputStream(socket.getOutputStream());
out.write(cmd);
InputStream in = new DataInputStream(socket.getInputStream());
byte[] response = new byte[2];
in.read(response);
cmd = createOutgoingSocks5Message(1, digest);
out.write(cmd);
createIncomingSocks5Message(in);
}
private String createIncomingSocks5Message(InputStream in)
throws IOException {
byte[] cmd = new byte[5];
in.read(cmd, 0, 5);
byte[] addr = new byte[cmd[4]];
in.read(addr, 0, addr.length);
String digest = new String(addr);
in.read();
in.read();
return digest;
}
private byte[] createOutgoingSocks5Message(int cmd, String digest) {
byte addr[] = digest.getBytes();
byte[] data = new byte[7 + addr.length];
data[0] = (byte) 5;
data[1] = (byte) cmd;
data[2] = (byte) 0;
data[3] = (byte) 0x3;
data[4] = (byte) addr.length;
System.arraycopy(addr, 0, data, 5, addr.length);
data[data.length - 2] = (byte) 0;
data[data.length - 1] = (byte) 0;
return data;
}
private class SelectedHostInfo {
protected XMPPException exception;
protected StreamHost selectedHost;
protected Socket establishedSocket;
SelectedHostInfo(StreamHost selectedHost, Socket establishedSocket) {
this.selectedHost = selectedHost;
this.establishedSocket = establishedSocket;
}
public SelectedHostInfo() {
}
}
private class ProxyProcess implements Runnable {
private ServerSocket listeningSocket;
private Map connectionMap = new HashMap();
private boolean done = false;
private Thread thread;
private int transfers;
public void run() {
try {
listeningSocket.setSoTimeout(10000);
}
catch (SocketException e) {
e.printStackTrace();
}
while (!done) {
Socket conn = null;
synchronized (ProxyProcess.this) {
while (transfers <= 0) {
transfers = -1;
try {
ProxyProcess.this.wait();
}
catch (InterruptedException e) {
}
}
}
try {
synchronized (listeningSocket) {
conn = listeningSocket.accept();
}
if (conn == null) {
continue;
}
String digest = establishSocks5UploadConnection(conn);
synchronized (connectionMap) {
connectionMap.put(digest, conn);
}
}
catch (IOException e) {
}
catch (XMPPException e) {
e.printStackTrace();
if (conn != null) {
try {
conn.close();
}
catch (IOException e1) {
}
}
}
}
}
public void start() {
thread.start();
}
public void stop() {
done = true;
}
public int getPort() {
return listeningSocket.getLocalPort();
}
ProxyProcess(ServerSocket listeningSocket) {
thread = new Thread(this, "File Transfer Connection Listener");
this.listeningSocket = listeningSocket;
}
public Socket getSocket(String digest) {
synchronized (connectionMap) {
return (Socket) connectionMap.get(digest);
}
}
public void addTransfer() {
synchronized (this) {
if (transfers == -1) {
transfers = 1;
thread.notify();
}
else {
transfers++;
}
}
}
public void removeTransfer() {
synchronized (this) {
transfers--;
}
}
}
private static class BytestreamSIDFilter implements PacketFilter {
private String sessionID;
public BytestreamSIDFilter(String sessionID) {
if (sessionID == null) {
throw new IllegalArgumentException("StreamID cannot be null");
}
this.sessionID = sessionID;
}
public boolean accept(Packet packet) {
if (!Bytestream.class.isInstance(packet)) {
return false;
}
Bytestream bytestream = (Bytestream) packet;
String sessionID = bytestream.getSessionID();
return (sessionID != null && sessionID.equals(this.sessionID));
}
}
}

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/**
*
*/
package org.jivesoftware.smackx.filetransfer;
import java.io.InputStream;
import java.io.OutputStream;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smackx.Form;
import org.jivesoftware.smackx.FormField;
import org.jivesoftware.smackx.packet.DataForm;
import org.jivesoftware.smackx.packet.StreamInitiation;
/**
* After the file transfer negotiation process is completed according to
* JEP-0096, the negotation process is passed off to a particular stream
* negotiator. The stream negotiator will then negotiate the chosen stream and
* return the stream to transfer the file.
*
*
* @author Alexander Wenckus
*
*/
public abstract class StreamNegotiator {
/**
* Creates the initiation acceptance packet to forward to the stream
* initiator.
*
* @param streamInitiationOffer
* The offer from the stream initatior to connect for a stream.
* @param namespace
* The namespace that relates to the accepted means of transfer.
* @return The response to be forwarded to the initator.
*/
public StreamInitiation createInitiationAccept(
StreamInitiation streamInitiationOffer, String namespace) {
StreamInitiation response = new StreamInitiation();
response.setTo(streamInitiationOffer.getFrom());
response.setFrom(streamInitiationOffer.getTo());
response.setType(IQ.Type.RESULT);
response.setPacketID(streamInitiationOffer.getPacketID());
DataForm form = new DataForm(Form.TYPE_SUBMIT);
FormField field = new FormField(
FileTransferNegotiator.STREAM_DATA_FIELD_NAME);
field.addValue(namespace);
form.addField(field);
response.setFeatureNegotiationForm(form);
return response;
}
/**
* This method handles the file stream download negotiation process. The
* appropriate stream negotiator's initiate incoming stream is called after
* an appropriate file transfer method is selected. The manager will respond
* to the initatior with the selected means of transfer, then it will handle
* any negotation specific to the particular transfer method. This method
* returns the InputStream, ready to transfer the file.
*
* @param initiation
* The initation that triggered this download.
* @return After the negotation process is complete, the InputStream to
* write a file to is returned.
* @throws XMPPException
* If an error occurs during this process an XMPPException is
* thrown.
*/
public abstract InputStream initiateIncomingStream(
StreamInitiation initiation) throws XMPPException;
/**
* This method handles the file upload stream negotiation process. The
* particular stream negotiator is determined during the file transfer
* negotiation process. This method returns the OutputStream to transmit the
* file to the remote user.
*
* @param streamID
* The streamID that uniquely identifies the file transfer.
* @param initiator
* The fully-qualified JID of the initiator of the file transfer.
* @param target
* The fully-qualified JID of the target or reciever of the file
* transfer.
* @return The negotiated stream ready for data.
* @throws XMPPException
* If an error occurs during the negotiation process an
* exception will be thrown.
*/
public abstract OutputStream initiateOutgoingStream(String streamID,
String initiator, String target) throws XMPPException;
/**
* Returns the XMPP namespace reserved for this particular type of file
* transfer.
*
* @return Returns the XMPP namespace reserved for this particular type of
* file transfer.
*/
public abstract String getNamespace();
}

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/*
* Created on Jun 21, 2005
*/
package org.jivesoftware.smackx.packet;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.PacketExtension;
import java.util.*;
/**
* A packet representing part of a Socks5 Bytestream negotiation.
*
* @author Alexander Wenckus
*/
public class Bytestream extends IQ {
private String sessionID;
private Mode mode = Mode.TCP;
private final List streamHosts = new ArrayList();
private StreamHostUsed usedHost;
private Activate toActivate;
/**
* The default constructor
*/
public Bytestream() {
super();
}
/**
* A constructor where the session ID can be specified.
*
* @param SID The session ID related to the negotiation.
* @see #setSessionID(String)
*/
public Bytestream(final String SID) {
super();
setSessionID(SID);
}
/**
* Set the session ID related to the Byte Stream. The session ID is a unique
* identifier used to differentiate between stream negotations.
*
* @param sessionID
*/
public void setSessionID(final String sessionID) {
this.sessionID = sessionID;
}
/**
* Returns the session ID related to the Byte Stream negotiation.
*
* @return Returns the session ID related to the Byte Stream negotiation.
* @see #setSessionID(String)
*/
public String getSessionID() {
return sessionID;
}
/**
* Set the transport mode. This should be put in the initiation of the
* interaction.
*
* @param mode
* @see Mode
*/
public void setMode(final Mode mode) {
this.mode = mode;
}
/**
* Returns the transport mode.
*
* @return Returns the transport mode.
* @see #setMode(Mode)
*/
public Mode getMode() {
return mode;
}
/**
* Adds a potential stream host that the remote user can connect to to
* receive the file.
*
* @param JID The jabber ID of the stream host.
* @param address The internet address of the stream host.
* @return The added stream host.
*/
public StreamHost addStreamHost(final String JID, final String address) {
return addStreamHost(JID, address, 0);
}
/**
* Adds a potential stream host that the remote user can connect to to
* receive the file.
*
* @param JID The jabber ID of the stream host.
* @param address The internet address of the stream host.
* @param port The port on which the remote host is seeking connections.
* @return The added stream host.
*/
public StreamHost addStreamHost(final String JID, final String address,
final int port) {
StreamHost host = new StreamHost(JID, address);
host.setPort(port);
addStreamHost(host);
return host;
}
/**
* Adds a potential stream host that the remote user can transfer the file
* through.
*
* @param host The potential stream host.
*/
public void addStreamHost(final StreamHost host) {
streamHosts.add(host);
}
/**
* Returns the list of stream hosts contained in the packet.
*
* @return Returns the list of stream hosts contained in the packet.
*/
public Collection getStreamHosts() {
return Collections.unmodifiableCollection(streamHosts);
}
/**
* Returns the stream host related to the given jabber ID, or null if there
* is none.
*
* @param JID The jabber ID of the desired stream host.
* @return Returns the stream host related to the given jabber ID, or null
* if there is none.
*/
public StreamHost getStreamHost(final String JID) {
StreamHost host;
for (Iterator it = streamHosts.iterator(); it.hasNext();) {
host = (StreamHost) it.next();
if (host.getJID().equals(JID)) {
return host;
}
}
return null;
}
/**
* Returns the count of stream hosts contained in this packet.
*
* @return Returns the count of stream hosts contained in this packet.
*/
public int countStreamHosts() {
return streamHosts.size();
}
/**
* Upon connecting to the stream host the target of the stream replys to the
* initiator with the jabber id of the Socks5 host that they used.
*
* @param JID The jabber ID of the used host.
*/
public void setUsedHost(final String JID) {
this.usedHost = new StreamHostUsed(JID);
}
/**
* Returns the Socks5 host connected to by the remote user.
*
* @return Returns the Socks5 host connected to by the remote user.
*/
public StreamHostUsed getUsedHost() {
return usedHost;
}
/**
* Returns the activate element of the packet sent to the proxy host to
* verify the identity of the initiator and match them to the appropriate
* stream.
*
* @return Returns the activate element of the packet sent to the proxy host
* to verify the identity of the initiator and match them to the
* appropriate stream.
*/
public Activate getToActivate() {
return toActivate;
}
/**
* Upon the response from the target of the used host the activate packet is
* sent to the Socks5 proxy. The proxy will activate the stream or return an
* error after verifying the identity of the initiator, using the activate
* packet.
*
* @param targetID The jabber ID of the target of the file transfer.
*/
public void setToActivate(final String targetID) {
this.toActivate = new Activate(targetID);
}
public String getChildElementXML() {
StringBuffer buf = new StringBuffer();
buf.append("<query xmlns=\"http://jabber.org/protocol/bytestreams\"");
if (this.getType().equals(IQ.Type.SET)) {
if (getSessionID() != null)
buf.append(" sid=\"").append(getSessionID()).append("\"");
if (getMode() != null)
buf.append(" mode = \"").append(getMode()).append("\"");
buf.append(">");
if (getToActivate() == null) {
for (Iterator it = getStreamHosts().iterator(); it.hasNext();)
buf.append(((StreamHost) it.next()).toXML());
}
else {
buf.append(getToActivate().toXML());
}
}
else if (this.getType().equals(IQ.Type.RESULT)) {
buf.append(">");
if (getUsedHost() != null)
buf.append(getUsedHost().toXML());
}
else {
return null;
}
buf.append("</query>");
return buf.toString();
}
/**
* Packet extension that represents a potential Socks5 proxy for the file
* transfer. Stream hosts are forwared to the target of the file transfer
* who then chooses and connects to one.
*
* @author Alexander Wenckus
*/
public static class StreamHost implements PacketExtension {
public static String NAMESPACE = "";
public static String ELEMENTNAME = "streamhost";
private final String JID;
private final String addy;
private int port = 0;
/**
* Default constructor.
*
* @param JID The jabber ID of the stream host.
* @param address The internet address of the stream host.
*/
public StreamHost(final String JID, final String address) {
this.JID = JID;
this.addy = address;
}
/**
* Returns the jabber ID of the stream host.
*
* @return Returns the jabber ID of the stream host.
*/
public String getJID() {
return JID;
}
/**
* Returns the internet address of the stream host.
*
* @return Returns the internet address of the stream host.
*/
public String getAddress() {
return addy;
}
/**
* Sets the port of the stream host.
*
* @param port The port on which the potential stream host would accept
* the connection.
*/
public void setPort(final int port) {
this.port = port;
}
/**
* Returns the port on which the potential stream host would accept the
* connection.
*
* @return Returns the port on which the potential stream host would
* accept the connection.
*/
public int getPort() {
return port;
}
public String getNamespace() {
return NAMESPACE;
}
public String getElementName() {
return ELEMENTNAME;
}
public String toXML() {
StringBuffer buf = new StringBuffer();
buf.append("<").append(getElementName()).append(" ");
buf.append("jid=\"").append(getJID()).append("\" ");
buf.append("host=\"").append(getAddress()).append("\" ");
if (getPort() != 0)
buf.append("port=\"").append(getPort()).append("\"");
else
buf.append("zeroconf=\"_jabber.bytestreams\"");
buf.append("/>");
return buf.toString();
}
}
/**
* After selected a Socks5 stream host and successfully connecting, the
* target of the file transfer returns a byte stream packet with the stream
* host used extension.
*
* @author Alexander Wenckus
*/
public static class StreamHostUsed implements PacketExtension {
public String NAMESPACE = "";
public static String ELEMENTNAME = "streamhost-used";
private final String JID;
/**
* Default constructor.
*
* @param JID The jabber ID of the selected stream host.
*/
public StreamHostUsed(final String JID) {
this.JID = JID;
}
/**
* Returns the jabber ID of the selected stream host.
*
* @return Returns the jabber ID of the selected stream host.
*/
public String getJID() {
return JID;
}
public String getNamespace() {
return NAMESPACE;
}
public String getElementName() {
return ELEMENTNAME;
}
public String toXML() {
StringBuffer buf = new StringBuffer();
buf.append("<").append(getElementName()).append(" ");
buf.append("jid=\"").append(getJID()).append("\" ");
buf.append("/>");
return buf.toString();
}
}
/**
* The packet sent by the stream initiator to the stream proxy to activate
* the connection.
*
* @author Alexander Wenckus
*/
public static class Activate implements PacketExtension {
public String NAMESPACE = "";
public static String ELEMENTNAME = "activate";
private final String target;
/**
* Default constructor specifying the target of the stream.
*
* @param target The target of the stream.
*/
public Activate(final String target) {
this.target = target;
}
/**
* Returns the target of the activation.
*
* @return Returns the target of the activation.
*/
public String getTarget() {
return target;
}
public String getNamespace() {
return NAMESPACE;
}
public String getElementName() {
return ELEMENTNAME;
}
public String toXML() {
StringBuffer buf = new StringBuffer();
buf.append("<").append(getElementName()).append(">");
buf.append(getTarget());
buf.append("</").append(getElementName()).append(">");
return buf.toString();
}
}
/**
* The stream can be either a TCP stream or a UDP stream.
*
* @author Alexander Wenckus
*/
public static class Mode {
/**
* A TCP based stream.
*/
public static Mode TCP = new Mode("tcp");
/**
* A UDP based stream.
*/
public static Mode UDP = new Mode("udp");
private final String modeString;
private Mode(final String mode) {
this.modeString = mode;
}
public String toString() {
return modeString;
}
public boolean equals(final Object obj) {
if (!(obj instanceof Mode))
return false;
return modeString.equals(((Mode) obj).modeString);
}
}
}

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/*
* Created on Jul 5, 2005
*/
package org.jivesoftware.smackx.packet;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.PacketExtension;
/**
* The different extensions used throughtout the negotiation and transfer
* process.
*
* @author Alexander Wenckus
*
*/
public class IBBExtensions {
public static final String NAMESPACE = "http://jabber.org/protocol/ibb";
private abstract static class IBB extends IQ {
final String sid;
private IBB(final String sid) {
this.sid = sid;
}
/**
* Returns the unique stream ID for this file transfer.
*
* @return Returns the unique stream ID for this file transfer.
*/
public String getSessionID() {
return sid;
}
public String getNamespace() {
return NAMESPACE;
}
}
/**
* Represents a request to open the file transfer.
*
* @author Alexander Wenckus
*
*/
public static class Open extends IBB {
public static final String ELEMENT_NAME = "open";
private final int blockSize;
/**
* Constructs an open packet.
*
* @param sid
* The streamID of the file transfer.
* @param blockSize
* The block size of the file transfer.
*/
public Open(final String sid, final int blockSize) {
super(sid);
this.blockSize = blockSize;
}
/**
* The size blocks in which the data will be sent.
*
* @return The size blocks in which the data will be sent.
*/
public int getBlockSize() {
return blockSize;
}
public String getElementName() {
return ELEMENT_NAME;
}
public String getChildElementXML() {
StringBuffer buf = new StringBuffer();
buf.append("<").append(getElementName()).append(" xmlns=\"").append(getNamespace()).append("\" ");
buf.append("sid=\"").append(getSessionID()).append("\" ");
buf.append("block-size=\"").append(getBlockSize()).append("\"");
buf.append("/>");
return buf.toString();
}
}
/**
* A data packet containing a portion of the file being sent encoded in
* base64.
*
* @author Alexander Wenckus
*
*/
public static class Data implements PacketExtension {
private long seq;
private String data;
public static final String ELEMENT_NAME = "data";
final String sid;
/**
* Returns the unique stream ID identifying this file transfer.
*
* @return Returns the unique stream ID identifying this file transfer.
*/
public String getSessionID() {
return sid;
}
public String getNamespace() {
return NAMESPACE;
}
/**
* A constructor.
*
* @param sid
* The stream ID.
*/
public Data(final String sid) {
this.sid = sid;
}
public Data(final String sid, final long seq, final String data) {
this(sid);
this.seq = seq;
this.data = data;
}
public String getElementName() {
return ELEMENT_NAME;
}
/**
* Returns the data contained in this packet.
*
* @return Returns the data contained in this packet.
*/
public String getData() {
return data;
}
/**
* Sets the data contained in this packet.
*
* @param data
* The data encoded in base65
*/
public void setData(final String data) {
this.data = data;
}
/**
* Returns the sequence of this packet in regard to the other data
* packets.
*
* @return Returns the sequence of this packet in regard to the other
* data packets.
*/
public long getSeq() {
return seq;
}
/**
* Sets the sequence of this packet.
*
* @param seq
* A number between 0 and 65535
*/
public void setSeq(final long seq) {
this.seq = seq;
}
public String toXML() {
StringBuffer buf = new StringBuffer();
buf.append("<").append(getElementName()).append(" xmlns=\"").append(getNamespace())
.append("\" ");
buf.append("sid=\"").append(getSessionID()).append("\" ");
buf.append("seq=\"").append(getSeq()).append("\"");
buf.append(">");
buf.append(getData());
buf.append("</").append(getElementName()).append(">");
return buf.toString();
}
}
/**
* Represents the closing of the file transfer.
*
*
* @author Alexander Wenckus
*
*/
public static class Close extends IBB {
public static final String ELEMENT_NAME = "close";
/**
* The constructor.
*
* @param sid
* The unique stream ID identifying this file transfer.
*/
public Close(String sid) {
super(sid);
}
public String getElementName() {
return ELEMENT_NAME;
}
public String getChildElementXML() {
StringBuffer buf = new StringBuffer();
buf.append("<").append(getElementName()).append(" xmlns=\"").append(getNamespace()).append("\" ");
buf.append("sid=\"").append(getSessionID()).append("\"");
buf.append("/>");
return buf.toString();
}
}
}

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/*
* Created on Jun 16, 2005
*/
package org.jivesoftware.smackx.packet;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.util.StringUtils;
import java.util.Date;
/**
* The process by which two entities initiate a stream.
*
* @author Alexander Wenckus
*/
public class StreamInitiation extends IQ {
private String id;
private String mimeType;
private File file;
private Feature featureNegotiation;
/**
* The "id" attribute is an opaque identifier. This attribute MUST be
* present on type='set', and MUST be a valid string. This SHOULD NOT be
* sent back on type='result', since the <iq/> "id" attribute provides the
* only context needed. This value is generated by the Sender, and the same
* value MUST be used throughout a session when talking to the Receiver.
*
* @param id The "id" attribute.
*/
public void setSesssionID(final String id) {
this.id = id;
}
/**
* Uniquely identifies a stream initiation to the recipient.
*
* @return The "id" attribute.
* @see #setSesssionID(String)
*/
public String getSessionID() {
return id;
}
/**
* The "mime-type" attribute identifies the MIME-type for the data across
* the stream. This attribute MUST be a valid MIME-type as registered with
* the Internet Assigned Numbers Authority (IANA) [3] (specifically, as
* listed at <http://www.iana.org/assignments/media-types>). During
* negotiation, this attribute SHOULD be present, and is otherwise not
* required. If not included during negotiation, its value is assumed to be
* "binary/octect-stream".
*
* @param mimeType The valid mime-type.
*/
public void setMimeType(final String mimeType) {
this.mimeType = mimeType;
}
/**
* Identifies the type of file that is desired to be transfered.
*
* @return The mime-type.
* @see #setMimeType(String)
*/
public String getMimeType() {
return mimeType;
}
/**
* Sets the file which contains the information pertaining to the file to be
* transfered.
*
* @param file The file identified by the stream initiator to be sent.
*/
public void setFile(final File file) {
this.file = file;
}
/**
* Returns the file containing the information about the request.
*
* @return Returns the file containing the information about the request.
*/
public File getFile() {
return file;
}
/**
* Sets the data form which contains the valid methods of stream neotiation
* and transfer.
*
* @param form The dataform containing the methods.
*/
public void setFeatureNegotiationForm(final DataForm form) {
this.featureNegotiation = new Feature(form);
}
/**
* Returns the data form which contains the valid methods of stream
* neotiation and transfer.
*
* @return Returns the data form which contains the valid methods of stream
* neotiation and transfer.
*/
public DataForm getFeatureNegotiationForm() {
return featureNegotiation.getData();
}
/*
* (non-Javadoc)
*
* @see org.jivesoftware.smack.packet.IQ#getChildElementXML()
*/
public String getChildElementXML() {
StringBuffer buf = new StringBuffer();
if (this.getType().equals(IQ.Type.SET)) {
buf.append("<si xmlns=\"http://jabber.org/protocol/si\" ");
if (getSessionID() != null) {
buf.append("id=\"").append(getSessionID()).append("\" ");
}
if (getMimeType() != null) {
buf.append("mime-type=\"").append(getMimeType()).append("\" ");
}
buf
.append("profile=\"http://jabber.org/protocol/si/profile/file-transfer\">");
// Add the file section if there is one.
String fileXML = file.toXML();
if (fileXML != null) {
buf.append(fileXML);
}
}
else if (this.getType().equals(IQ.Type.RESULT)) {
buf.append("<si xmlns=\"http://jabber.org/protocol/si\">");
}
else {
throw new IllegalArgumentException("IQ Type not understood");
}
if (featureNegotiation != null) {
buf.append(featureNegotiation.toXML());
}
buf.append("</si>");
return buf.toString();
}
/**
* <ul>
* <li>size: The size, in bytes, of the data to be sent.</li>
* <li>name: The name of the file that the Sender wishes to send.</li>
* <li>date: The last modification time of the file. This is specified
* using the DateTime profile as described in Jabber Date and Time Profiles.</li>
* <li>hash: The MD5 sum of the file contents.</li>
* </ul>
* <p/>
* <p/>
* &lt;desc&gt; is used to provide a sender-generated description of the
* file so the receiver can better understand what is being sent. It MUST
* NOT be sent in the result.
* <p/>
* <p/>
* When &lt;range&gt; is sent in the offer, it should have no attributes.
* This signifies that the sender can do ranged transfers. When a Stream
* Initiation result is sent with the <range> element, it uses these
* attributes:
* <p/>
* <ul>
* <li>offset: Specifies the position, in bytes, to start transferring the
* file data from. This defaults to zero (0) if not specified.</li>
* <li>length - Specifies the number of bytes to retrieve starting at
* offset. This defaults to the length of the file from offset to the end.</li>
* </ul>
* <p/>
* <p/>
* Both attributes are OPTIONAL on the &lt;range&gt; element. Sending no
* attributes is synonymous with not sending the &lt;range&gt; element. When
* no &lt;range&gt; element is sent in the Stream Initiation result, the
* Sender MUST send the complete file starting at offset 0. More generally,
* data is sent over the stream byte for byte starting at the offset
* position for the length specified.
*
* @author Alexander Wenckus
*/
public static class File implements PacketExtension {
private final String name;
private final long size;
private String hash;
private Date date;
private String desc;
private boolean isRanged;
/**
* Constructor providing the name of the file and its size.
*
* @param name The name of the file.
* @param size The size of the file in bytes.
*/
public File(final String name, final long size) {
if (name == null) {
throw new NullPointerException("name cannot be null");
}
this.name = name;
this.size = size;
}
/**
* Returns the file's name.
*
* @return Returns the file's name.
*/
public String getName() {
return name;
}
/**
* Returns the file's size.
*
* @return Returns the file's size.
*/
public long getSize() {
return size;
}
/**
* Sets the MD5 sum of the file's contents
*
* @param hash The MD5 sum of the file's contents.
*/
public void setHash(final String hash) {
this.hash = hash;
}
/**
* Returns the MD5 sum of the file's contents
*
* @return Returns the MD5 sum of the file's contents
*/
public String getHash() {
return hash;
}
/**
* Sets the date that the file was last modified.
*
* @param date The date that the file was last modified.
*/
public void setDate(Date date) {
this.date = date;
}
/**
* Returns the date that the file was last modified.
*
* @return Returns the date that the file was last modified.
*/
public Date getDate() {
return date;
}
/**
* Sets the description of the file.
*
* @param desc The description of the file so that the file reciever can
* know what file it is.
*/
public void setDesc(final String desc) {
this.desc = desc;
}
/**
* Returns the description of the file.
*
* @return Returns the description of the file.
*/
public String getDesc() {
return desc;
}
/**
* True if a range can be provided and false if it cannot.
*
* @param isRanged True if a range can be provided and false if it cannot.
*/
public void setRanged(final boolean isRanged) {
this.isRanged = isRanged;
}
/**
* Returns whether or not the initiator can support a range for the file
* tranfer.
*
* @return Returns whether or not the initiator can support a range for
* the file tranfer.
*/
public boolean isRanged() {
return isRanged;
}
public String getElementName() {
return "file";
}
public String getNamespace() {
return "http://jabber.org/protocol/si/profile/file-transfer";
}
public String toXML() {
StringBuffer buffer = new StringBuffer();
buffer.append("<").append(getElementName()).append(" xmlns=\"")
.append(getNamespace()).append("\" ");
if (getName() != null) {
buffer.append("name=\"").append(getName()).append("\" ");
}
if (getSize() > 0) {
buffer.append("size=\"").append(getSize()).append("\" ");
}
if (getDate() != null) {
buffer.append("date=\"").append(DelayInformation.UTC_FORMAT.format(date)).append("\" ");
}
if (getHash() != null) {
buffer.append("hash=\"").append(getHash()).append("\" ");
}
if ((desc != null && desc.length() > 0) || isRanged) {
buffer.append(">");
if (getDesc() != null && desc.length() > 0) {
buffer.append("<desc>").append(StringUtils.escapeForXML(getDesc())).append("</desc>");
}
if (isRanged()) {
buffer.append("<range/>");
}
buffer.append("</").append(getElementName()).append(">");
}
else {
buffer.append("/>");
}
return buffer.toString();
}
}
/**
* The feature negotiation portion of the StreamInitiation packet.
*
* @author Alexander Wenckus
*
*/
public class Feature implements PacketExtension {
private final DataForm data;
/**
* The dataform can be provided as part of the constructor.
*
* @param data The dataform.
*/
public Feature(final DataForm data) {
this.data = data;
}
/**
* Returns the dataform associated with the feature negotiation.
*
* @return Returns the dataform associated with the feature negotiation.
*/
public DataForm getData() {
return data;
}
public String getNamespace() {
return "http://jabber.org/protocol/feature-neg";
}
public String getElementName() {
return "feature";
}
public String toXML() {
StringBuffer buf = new StringBuffer();
buf
.append("<feature xmlns=\"http://jabber.org/protocol/feature-neg\">");
buf.append(data.toXML());
buf.append("</feature>");
return buf.toString();
}
}
}

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/*
* Copyright [2005] [Mindbridge.com, Inc.]
*
* 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.
*
*/
/*
* Created on Jun 21, 2005
*/
package org.jivesoftware.smackx.provider;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.provider.IQProvider;
import org.jivesoftware.smackx.packet.Bytestream;
import org.xmlpull.v1.XmlPullParser;
/**
* Parses a bytestream packet.
*
* @author Alexander Wenckus
*/
public class BytestreamsProvider implements IQProvider {
/*
* (non-Javadoc)
*
* @see org.jivesoftware.smack.provider.IQProvider#parseIQ(org.xmlpull.v1.XmlPullParser)
*/
/*
* (non-Javadoc)
*
* @see org.jivesoftware.smack.provider.IQProvider#parseIQ(org.xmlpull.v1.XmlPullParser)
*/
/*
* (non-Javadoc)
*
* @see org.jivesoftware.smack.provider.IQProvider#parseIQ(org.xmlpull.v1.XmlPullParser)
*/
public IQ parseIQ(XmlPullParser parser) throws Exception {
// StringBuffer buf = new StringBuffer();
boolean done = false;
Bytestream toReturn = new Bytestream();
String id = parser.getAttributeValue("", "sid");
String mode = parser.getAttributeValue("", "mode");
// streamhost
String JID = null;
String host = null;
String port = null;
int eventType;
String elementName;
// String namespace;
while (!done) {
eventType = parser.next();
elementName = parser.getName();
// namespace = parser.getNamespace();
if (eventType == XmlPullParser.START_TAG) {
if (elementName.equals(Bytestream.StreamHost.ELEMENTNAME)) {
JID = parser.getAttributeValue("", "jid");
host = parser.getAttributeValue("", "host");
port = parser.getAttributeValue("", "port");
} else if (elementName
.equals(Bytestream.StreamHostUsed.ELEMENTNAME)) {
toReturn.setUsedHost(parser.getAttributeValue("", "jid"));
} else if (elementName.equals(Bytestream.Activate.ELEMENTNAME)) {
toReturn.setToActivate(parser.getAttributeValue("", "jid"));
}
} else if (eventType == XmlPullParser.END_TAG) {
if (elementName.equals("streamhost")) {
if (port == null) {
toReturn.addStreamHost(JID, host);
} else {
toReturn.addStreamHost(JID, host, Integer
.parseInt(port));
}
JID = null;
host = null;
port = null;
} else if (elementName.equals("query")) {
done = true;
}
}
}
toReturn.setMode((mode == "udp" ? Bytestream.Mode.UDP
: Bytestream.Mode.TCP));
toReturn.setSessionID(id);
return toReturn;
}
}

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/*
* Created on Jul 5, 2005
*/
package org.jivesoftware.smackx.provider;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.provider.IQProvider;
import org.jivesoftware.smack.provider.PacketExtensionProvider;
import org.jivesoftware.smackx.packet.IBBExtensions;
import org.xmlpull.v1.XmlPullParser;
/**
*
* Parses an IBB packet.
*
* @author Alexander Wenckus
*/
public class IBBProviders {
/**
* Parses an open IBB packet.
*
* @author Alexander Wenckus
*
*/
public static class Open implements IQProvider {
public IQ parseIQ(XmlPullParser parser) throws Exception {
final String sid = parser.getAttributeValue("", "sid");
final int blockSize = Integer.parseInt(parser.getAttributeValue("",
"block-size"));
return new IBBExtensions.Open(sid, blockSize);
}
}
/**
* Parses a data IBB packet.
*
* @author Alexander Wenckus
*
*/
public static class Data implements PacketExtensionProvider {
public PacketExtension parseExtension(XmlPullParser parser)
throws Exception {
final String sid = parser.getAttributeValue("", "sid");
final long seq = Long
.parseLong(parser.getAttributeValue("", "seq"));
final String data = parser.nextText();
return new IBBExtensions.Data(sid, seq, data);
}
}
/**
* Parses a close IBB packet.
*
* @author Alexander Wenckus
*
*/
public static class Close implements IQProvider {
public IQ parseIQ(XmlPullParser parser) throws Exception {
final String sid = parser.getAttributeValue("", "sid");
return new IBBExtensions.Close(sid);
}
}
}

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/*
* Created on Jun 16, 2005
*/
package org.jivesoftware.smackx.provider;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.provider.IQProvider;
import org.jivesoftware.smackx.packet.DataForm;
import org.jivesoftware.smackx.packet.DelayInformation;
import org.jivesoftware.smackx.packet.StreamInitiation;
import org.jivesoftware.smackx.packet.StreamInitiation.File;
import org.jivesoftware.smackx.provider.DataFormProvider;
import org.xmlpull.v1.XmlPullParser;
/**
* The StreamInitiationProvider parses StreamInitiation packets.
*
* @author Alexander Wenckus
*
*/
public class StreamInitiationProvider implements IQProvider {
public IQ parseIQ(final XmlPullParser parser) throws Exception {
boolean done = false;
// si
String id = parser.getAttributeValue("", "id");
String mimeType = parser.getAttributeValue("", "mime-type");
StreamInitiation initiation = new StreamInitiation();
// file
String name = null;
String size = null;
String hash = null;
String date = null;
String desc = null;
boolean isRanged = false;
// feature
DataForm form = null;
DataFormProvider dataFormProvider = new DataFormProvider();
int eventType;
String elementName;
String namespace;
while (!done) {
eventType = parser.next();
elementName = parser.getName();
namespace = parser.getNamespace();
if (eventType == XmlPullParser.START_TAG) {
if (elementName.equals("file")) {
name = parser.getAttributeValue("", "name");
size = parser.getAttributeValue("", "size");
hash = parser.getAttributeValue("", "hash");
date = parser.getAttributeValue("", "date");
} else if (elementName.equals("desc")) {
desc = parser.nextText();
} else if (elementName.equals("range")) {
isRanged = true;
} else if (elementName.equals("x")
&& namespace.equals("jabber:x:data")) {
form = (DataForm) dataFormProvider.parseExtension(parser);
}
} else if (eventType == XmlPullParser.END_TAG) {
if (elementName.equals("si")) {
done = true;
} else if (elementName.equals("file")) {
File file = new File(name, Long.parseLong(size));
file.setHash(hash);
if (date != null)
file.setDate(DelayInformation.UTC_FORMAT.parse(date));
file.setDesc(desc);
file.setRanged(isRanged);
initiation.setFile(file);
}
}
}
initiation.setSesssionID(id);
initiation.setMimeType(mimeType);
initiation.setFeatureNegotiationForm(form);
return initiation;
}
}