rename "source" directory to "src"

1 files changed, 1358 insertions, 0 deletions

diff --git a/src/QXmppTransferManager.cpp b/src/QXmppTransferManager.cpp
new file mode 100644
index 00000000..b64d6285
--- /dev/null
+++ b/src/QXmppTransferManager.cpp
@@ -0,0 +1,1358 @@
+/*
+ * Copyright (C) 2008-2010 The QXmpp developers
+ *
+ * Author:
+ *	Jeremy Lainé
+ *
+ * Source:
+ *	http://code.google.com/p/qxmpp
+ *
+ * This file is a part of QXmpp library.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ */
+
+#include <QDomElement>
+#include <QFile>
+#include <QFileInfo>
+#include <QNetworkInterface>
+#include <QTimer>
+
+#include "QXmppByteStreamIq.h"
+#include "QXmppConstants.h"
+#include "QXmppIbbIq.h"
+#include "QXmppLogger.h"
+#include "QXmppSocks.h"
+#include "QXmppStream.h"
+#include "QXmppStreamInitiationIq.h"
+#include "QXmppTransferManager.h"
+#include "QXmppUtils.h"
+
+// time to try to connect to a SOCKS host (7 seconds)
+const int socksTimeout = 7000;
+
+static QString streamHash(const QString &sid, const QString &initiatorJid, const QString &targetJid)
+{
+    QCryptographicHash hash(QCryptographicHash::Sha1);
+    QString str = sid + initiatorJid + targetJid;
+    hash.addData(str.toAscii());
+    return hash.result().toHex();
+}
+
+QXmppTransferFileInfo::QXmppTransferFileInfo()
+    : m_size(0)
+{
+}
+
+QDateTime QXmppTransferFileInfo::date() const
+{
+    return m_date;
+}
+
+void QXmppTransferFileInfo::setDate(const QDateTime &date)
+{
+    m_date = date;
+}
+
+QByteArray QXmppTransferFileInfo::hash() const
+{
+    return m_hash;
+}
+
+void QXmppTransferFileInfo::setHash(const QByteArray &hash)
+{
+    m_hash = hash;
+}
+
+QString QXmppTransferFileInfo::name() const
+{
+    return m_name;
+}
+
+void QXmppTransferFileInfo::setName(const QString &name)
+{
+    m_name = name;
+}
+
+qint64 QXmppTransferFileInfo::size() const
+{
+    return m_size;
+}
+
+void QXmppTransferFileInfo::setSize(qint64 size)
+{
+    m_size = size;
+}
+
+bool QXmppTransferFileInfo::operator==(const QXmppTransferFileInfo &other) const
+{
+    return other.m_size == m_size &&
+        other.m_hash == m_hash &&
+        other.m_name == m_name;
+}
+
+QXmppTransferJob::QXmppTransferJob(const QString &jid, QXmppTransferJob::Direction direction, QObject *parent)
+    : QObject(parent),
+    m_blockSize(16384),
+    m_direction(direction),
+    m_done(0),
+    m_error(NoError),
+    m_hash(QCryptographicHash::Md5),
+    m_iodevice(0),
+    m_jid(jid),
+    m_method(NoMethod),
+    m_state(OfferState),
+    m_ibbSequence(0),
+    m_socksSocket(0)
+{
+}
+
+/// Call this method if you wish to abort on ongoing transfer job.
+///
+
+void QXmppTransferJob::abort()
+{
+    terminate(AbortError);
+}
+
+/// Call this method if you wish to accept an incoming transfer job.
+///
+
+void QXmppTransferJob::accept(QIODevice *iodevice)
+{
+    if (m_direction == IncomingDirection && m_state == OfferState && !m_iodevice)
+    {
+        m_iodevice = iodevice;
+        setState(QXmppTransferJob::StartState);
+    }
+}
+
+void QXmppTransferJob::checkData()
+{
+    if ((m_fileInfo.size() && m_done != m_fileInfo.size()) ||
+        (!m_fileInfo.hash().isEmpty() && m_hash.result() != m_fileInfo.hash()))
+        terminate(QXmppTransferJob::FileCorruptError);
+    else
+        terminate(QXmppTransferJob::NoError);
+}
+
+/// Returns the job's data for a given role.
+///
+/// You can associate arbitrary data with the role using setData().
+
+QVariant QXmppTransferJob::data(int role) const
+{
+    return m_data.value(role);
+}
+
+/// Sets the data for a given role to the given value.
+///
+/// You can set any data you want for use in your application, this
+/// data will not be used internally by QXmppTransferManager.
+
+void QXmppTransferJob::setData(int role, const QVariant &value)
+{
+    m_data.insert(role, value);
+}
+
+/// Returns the job's transfer direction.
+///
+
+QXmppTransferJob::Direction QXmppTransferJob::direction() const
+{
+    return m_direction;
+}
+
+/// Returns the last error that was encountered.
+///
+
+QXmppTransferJob::Error QXmppTransferJob::error() const
+{
+    return m_error;
+}
+
+/// Returns the remote party's JID.
+///
+
+QString QXmppTransferJob::jid() const
+{
+    return m_jid;
+}
+
+/// Returns meta-data about the file being transfered.
+///
+
+QXmppTransferFileInfo QXmppTransferJob::fileInfo() const
+{
+    return m_fileInfo;
+}
+
+QDateTime QXmppTransferJob::fileDate() const
+{
+    return m_fileInfo.date();
+}
+
+QByteArray QXmppTransferJob::fileHash() const
+{
+    return m_fileInfo.hash();
+}
+
+QString QXmppTransferJob::fileName() const
+{
+    return m_fileInfo.name();
+}
+
+qint64 QXmppTransferJob::fileSize() const
+{
+    return m_fileInfo.size();
+}
+
+/// Returns the job's transfer method.
+///
+
+QXmppTransferJob::Method QXmppTransferJob::method() const
+{
+    return m_method;
+}
+
+/// Returns the job's session identifier.
+///
+
+QString QXmppTransferJob::sid() const
+{
+    return m_sid;
+}
+
+/// Returns the job's state.
+///
+
+QXmppTransferJob::State QXmppTransferJob::state() const
+{
+    return m_state;
+}
+
+void QXmppTransferJob::setState(QXmppTransferJob::State state)
+{
+    if (m_state != state)
+    {
+        m_state = state;
+        emit stateChanged(m_state);
+    }
+}
+
+void QXmppTransferJob::disconnected()
+{
+    if (m_state == QXmppTransferJob::FinishedState)
+        return;
+
+    // terminate transfer
+    if (m_direction == QXmppTransferJob::IncomingDirection)
+    {
+        checkData();
+    } else {
+        if (fileSize() && m_done != fileSize())
+            terminate(QXmppTransferJob::ProtocolError);
+        else
+            terminate(QXmppTransferJob::NoError);
+    }
+}
+
+void QXmppTransferJob::receiveData()
+{
+    if (m_state != QXmppTransferJob::TransferState)
+        return;
+
+    // receive data block
+    if (m_direction == QXmppTransferJob::IncomingDirection)
+    {
+        writeData(m_socksSocket->readAll());
+
+        // if we have received all the data, stop here
+        if (fileSize() && m_done >= fileSize())
+            checkData();
+    }
+}
+
+void QXmppTransferJob::sendData()
+{
+    if (m_state != QXmppTransferJob::TransferState)
+        return;
+
+    // don't saturate the outgoing socket
+    if (m_socksSocket->bytesToWrite() > 2 * m_blockSize)
+        return;
+
+    // check whether we have written the whole file
+    if (m_fileInfo.size() && m_done >= m_fileInfo.size())
+    {
+        if (!m_socksSocket->bytesToWrite())
+            terminate(QXmppTransferJob::NoError);
+        return;
+    }
+
+    char *buffer = new char[m_blockSize];
+    qint64 length = m_iodevice->read(buffer, m_blockSize);
+    if (length < 0)
+    {
+        delete [] buffer;
+        terminate(QXmppTransferJob::FileAccessError);
+        return;
+    }
+    if (length > 0)
+    {
+        m_socksSocket->write(buffer, length);
+        delete [] buffer;
+        m_done += length;
+        emit progress(m_done, fileSize());
+    }
+}
+
+void QXmppTransferJob::slotTerminated()
+{
+    emit stateChanged(m_state);
+    if (m_error != NoError)
+        emit error(m_error);
+    emit finished();
+}
+
+void QXmppTransferJob::terminate(QXmppTransferJob::Error cause)
+{
+    if (m_state == FinishedState)
+        return;
+
+    // change state
+    m_error = cause;
+    m_state = FinishedState;
+
+    // close IO device
+    if (m_iodevice)
+        m_iodevice->close();
+
+    // close socket
+    if (m_socksSocket)
+    {
+        m_socksSocket->flush();
+        m_socksSocket->close();
+    }
+
+    // emit signals later
+    QTimer::singleShot(0, this, SLOT(slotTerminated()));
+}
+
+bool QXmppTransferJob::writeData(const QByteArray &data)
+{
+    const qint64 written = m_iodevice->write(data);
+    if (written < 0)
+        return false;
+    m_done += written;
+    if (!m_fileInfo.hash().isEmpty())
+        m_hash.addData(data);
+    progress(m_done, m_fileInfo.size());
+    return true;
+}
+
+QXmppTransferManager::QXmppTransferManager(QXmppStream *stream, QObject *parent)
+    : QObject(parent),
+    m_stream(stream),
+    m_ibbBlockSize(4096),
+    m_proxyOnly(false),
+    m_socksServer(0),
+    m_supportedMethods(QXmppTransferJob::AnyMethod)
+{
+    // Logging
+    bool check = connect(this, SIGNAL(logMessage(QXmppLogger::MessageType, QString)),
+        m_stream, SIGNAL(logMessage(QXmppLogger::MessageType, QString)));
+    Q_ASSERT(check);
+
+    // XEP-0047: In-Band Bytestreams
+    check = QObject::connect(m_stream, SIGNAL(iqReceived(const QXmppIq&)),
+        this, SLOT(iqReceived(const QXmppIq&)));
+    Q_ASSERT(check);
+
+    check = QObject::connect(m_stream, SIGNAL(ibbCloseIqReceived(const QXmppIbbCloseIq&)),
+        this, SLOT(ibbCloseIqReceived(const QXmppIbbCloseIq&)));
+    Q_ASSERT(check);
+
+    check = QObject::connect(m_stream, SIGNAL(ibbDataIqReceived(const QXmppIbbDataIq&)),
+        this, SLOT(ibbDataIqReceived(const QXmppIbbDataIq&)));
+    Q_ASSERT(check);
+
+    check = QObject::connect(m_stream, SIGNAL(ibbOpenIqReceived(const QXmppIbbOpenIq&)),
+        this, SLOT(ibbOpenIqReceived(const QXmppIbbOpenIq&)));
+    Q_ASSERT(check);
+
+    // XEP-0065: SOCKS5 Bytestreams
+    check = QObject::connect(m_stream, SIGNAL(byteStreamIqReceived(const QXmppByteStreamIq&)),
+        this, SLOT(byteStreamIqReceived(const QXmppByteStreamIq&)));
+    Q_ASSERT(check);
+
+    // XEP-0095: Stream Initiation
+    check = QObject::connect(m_stream, SIGNAL(streamInitiationIqReceived(const QXmppStreamInitiationIq&)),
+        this, SLOT(streamInitiationIqReceived(const QXmppStreamInitiationIq&)));
+    Q_ASSERT(check);
+
+    // start SOCKS server
+    m_socksServer = new QXmppSocksServer(this);
+    if (m_socksServer->listen())
+    {
+        connect(m_socksServer, SIGNAL(newConnection(QTcpSocket*, const QString&, quint16)),
+            this, SLOT(socksServerConnected(QTcpSocket*, const QString&, quint16)));
+    } else {
+        emit logMessage(QXmppLogger::WarningMessage, "QXmppSocksServer could not start listening");
+    }
+}
+
+void QXmppTransferManager::byteStreamIqReceived(const QXmppByteStreamIq &iq)
+{
+    // handle IQ from proxy
+    foreach (QXmppTransferJob *job, m_jobs)
+    {
+        if (job->m_socksProxy.jid() == iq.from() && job->m_requestId == iq.id())
+        {
+            if (iq.type() == QXmppIq::Result && iq.streamHosts().size() > 0)
+            {
+                job->m_socksProxy = iq.streamHosts().first();
+                socksServerSendOffer(job);
+                return;
+            }
+        }
+    }
+
+    if (iq.type() == QXmppIq::Result)
+        byteStreamResultReceived(iq);
+    else if (iq.type() == QXmppIq::Set)
+        byteStreamSetReceived(iq);
+}
+
+/// Handle a response to a bystream set, i.e. after we informed the remote party
+/// that we connected to a stream host.
+void QXmppTransferManager::byteStreamResponseReceived(const QXmppIq &iq)
+{
+    QXmppTransferJob *job = getJobByRequestId(iq.from(), iq.id());
+    if (!job ||
+        job->direction() != QXmppTransferJob::IncomingDirection ||
+        job->method() != QXmppTransferJob::SocksMethod ||
+        job->state() != QXmppTransferJob::StartState)
+        return;
+
+    if (iq.type() == QXmppIq::Error)
+        job->terminate(QXmppTransferJob::ProtocolError);
+}
+
+/// Handle a bytestream result, i.e. after the remote party has connected to
+/// a stream host.
+void QXmppTransferManager::byteStreamResultReceived(const QXmppByteStreamIq &iq)
+{
+    QXmppTransferJob *job = getJobByRequestId(iq.from(), iq.id());
+    if (!job ||
+        job->direction() != QXmppTransferJob::OutgoingDirection ||
+        job->method() != QXmppTransferJob::SocksMethod ||
+        job->state() != QXmppTransferJob::StartState)
+        return;
+
+    // check the stream host
+    if (iq.streamHostUsed() == job->m_socksProxy.jid())
+    {
+        const QXmppByteStreamIq::StreamHost streamHost = job->m_socksProxy;
+        emit logMessage(QXmppLogger::InformationMessage,
+            QString("Connecting to proxy: %1 (%2:%3)").arg(
+                streamHost.jid(),
+                streamHost.host().toString(),
+                QString::number(streamHost.port())));
+
+        // connect to proxy
+        const QString hostName = streamHash(job->m_sid,
+                                            m_stream->configuration().jid(),
+                                            job->m_jid);
+
+        QXmppSocksClient *socksClient = new QXmppSocksClient(streamHost.host(), streamHost.port(), job);
+        socksClient->connectToHost(hostName, 0);
+        // FIXME : this should probably be made asynchronous as it blocks XMPP packet handling
+        if (!socksClient->waitForReady(socksTimeout))
+        {
+            emit logMessage(QXmppLogger::WarningMessage,
+                QString("Failed to connect to proxy: %1 (%2:%3)").arg(
+                    streamHost.jid(),
+                    streamHost.host().toString(),
+                    QString::number(streamHost.port())));
+            delete socksClient;
+            job->terminate(QXmppTransferJob::ProtocolError);
+            return;
+        }
+        job->m_socksSocket = socksClient;
+        connect(job->m_socksSocket, SIGNAL(disconnected()), job, SLOT(disconnected()));
+
+        // activate stream
+        QXmppByteStreamIq streamIq;
+        streamIq.setType(QXmppIq::Set);
+        streamIq.setFrom(m_stream->configuration().jid());
+        streamIq.setTo(streamHost.jid());
+        streamIq.setSid(job->m_sid);
+        streamIq.setActivate(job->m_jid);
+        job->m_requestId = streamIq.id();
+        m_stream->sendPacket(streamIq);
+        return;
+    }
+
+    // direction connection, start sending data
+    if (!job->m_socksSocket)
+    {
+        emit logMessage(QXmppLogger::WarningMessage, "Client says they connected to our SOCKS server, but they did not");
+        job->terminate(QXmppTransferJob::ProtocolError);
+        return;
+    }
+    job->setState(QXmppTransferJob::TransferState);
+    connect(job->m_socksSocket, SIGNAL(disconnected()), job, SLOT(disconnected()));
+    connect(job->m_socksSocket, SIGNAL(bytesWritten(qint64)), job, SLOT(sendData()));
+    connect(job->m_iodevice, SIGNAL(readyRead()), job, SLOT(sendData()));
+    job->sendData();
+}
+
+/// Handle a bytestream set, i.e. an invitation from the remote party to connect
+/// to a stream host.
+void QXmppTransferManager::byteStreamSetReceived(const QXmppByteStreamIq &iq)
+{
+    QXmppIq response;
+    response.setId(iq.id());
+    response.setTo(iq.from());
+
+    QXmppTransferJob *job = getJobBySid(iq.from(), iq.sid());
+    if (!job ||
+        job->direction() != QXmppTransferJob::IncomingDirection ||
+        job->method() != QXmppTransferJob::SocksMethod ||
+        job->state() != QXmppTransferJob::StartState)
+    {
+        // the stream is unknown
+        QXmppStanza::Error error(QXmppStanza::Error::Auth, QXmppStanza::Error::NotAcceptable);
+        error.setCode(406);
+        response.setType(QXmppIq::Error);
+        response.setError(error);
+        m_stream->sendPacket(response);
+        return;
+    }
+
+    // try connecting to the offered stream hosts
+    foreach (const QXmppByteStreamIq::StreamHost &streamHost, iq.streamHosts())
+    {
+        emit logMessage(QXmppLogger::InformationMessage,
+            QString("Connecting to streamhost: %1 (%2:%3)").arg(
+                streamHost.jid(),
+                streamHost.host().toString(),
+                QString::number(streamHost.port())));
+
+        const QString hostName = streamHash(job->m_sid,
+                                            job->m_jid,
+                                            m_stream->configuration().jid());
+
+        // try to connect to stream host
+        QXmppSocksClient *socksClient = new QXmppSocksClient(streamHost.host(), streamHost.port(), job);
+        socksClient->connectToHost(hostName, 0);
+        // FIXME : this should probably be made asynchronous as it blocks XMPP packet handling
+        if (socksClient->waitForReady(socksTimeout))
+        {
+            job->setState(QXmppTransferJob::TransferState);
+            job->m_socksSocket = socksClient;
+            connect(job->m_socksSocket, SIGNAL(readyRead()), job, SLOT(receiveData()));
+            connect(job->m_socksSocket, SIGNAL(disconnected()), job, SLOT(disconnected()));
+
+            QXmppByteStreamIq ackIq;
+            ackIq.setId(iq.id());
+            ackIq.setTo(iq.from());
+            ackIq.setType(QXmppIq::Result);
+            ackIq.setSid(job->m_sid);
+            ackIq.setStreamHostUsed(streamHost.jid());
+            m_stream->sendPacket(ackIq);
+            return;
+        } else {
+            emit logMessage(QXmppLogger::WarningMessage,
+                QString("Failed to connect to streamhost: %1 (%2:%3)").arg(
+                    streamHost.jid(),
+                    streamHost.host().toString(),
+                    QString::number(streamHost.port())));
+            delete socksClient;
+        }
+    }
+
+    // could not connect to any stream host
+    QXmppStanza::Error error(QXmppStanza::Error::Cancel, QXmppStanza::Error::ItemNotFound);
+    error.setCode(404);
+    response.setType(QXmppIq::Error);
+    response.setError(error);
+    m_stream->sendPacket(response);
+
+    job->terminate(QXmppTransferJob::ProtocolError);
+}
+
+QXmppTransferJob* QXmppTransferManager::getJobByRequestId(const QString &jid, const QString &id)
+{
+    foreach (QXmppTransferJob *job, m_jobs)
+        if (job->m_jid == jid && job->m_requestId == id)
+            return job;
+    return 0;
+}
+
+QXmppTransferJob* QXmppTransferManager::getJobBySid(const QString &jid, const QString &sid)
+{
+    foreach (QXmppTransferJob *job, m_jobs)
+        if (job->m_jid == jid && job->m_sid == sid)
+            return job;
+    return 0;
+}
+
+void QXmppTransferManager::ibbCloseIqReceived(const QXmppIbbCloseIq &iq)
+{
+    QXmppIq response;
+    response.setTo(iq.from());
+    response.setId(iq.id());
+
+    QXmppTransferJob *job = getJobBySid(iq.from(), iq.sid());
+    if (!job ||
+        job->direction() != QXmppTransferJob::IncomingDirection ||
+        job->method() != QXmppTransferJob::InBandMethod)
+    {
+        // the job is unknown, cancel it
+        QXmppStanza::Error error(QXmppStanza::Error::Cancel, QXmppStanza::Error::ItemNotFound);
+        response.setType(QXmppIq::Error);
+        response.setError(error);
+        m_stream->sendPacket(response);
+        return;
+    }
+
+    // acknowledge the packet
+    response.setType(QXmppIq::Result);
+    m_stream->sendPacket(response);
+
+    // check received data
+    job->checkData();
+}
+
+void QXmppTransferManager::ibbDataIqReceived(const QXmppIbbDataIq &iq)
+{
+    QXmppIq response;
+    response.setTo(iq.from());
+    response.setId(iq.id());
+
+    QXmppTransferJob *job = getJobBySid(iq.from(), iq.sid());
+    if (!job ||
+        job->direction() != QXmppTransferJob::IncomingDirection ||
+        job->method() != QXmppTransferJob::InBandMethod ||
+        job->state() != QXmppTransferJob::TransferState)
+    {
+        // the job is unknown, cancel it
+        QXmppStanza::Error error(QXmppStanza::Error::Cancel, QXmppStanza::Error::ItemNotFound);
+        response.setType(QXmppIq::Error);
+        response.setError(error);
+        m_stream->sendPacket(response);
+        return;
+    }
+
+    if (iq.sequence() != job->m_ibbSequence)
+    {
+        // the packet is out of sequence
+        QXmppStanza::Error error(QXmppStanza::Error::Cancel, QXmppStanza::Error::UnexpectedRequest);
+        response.setType(QXmppIq::Error);
+        response.setError(error);
+        m_stream->sendPacket(response);
+        return;
+    }
+
+    // write data
+    job->writeData(iq.payload());
+    job->m_ibbSequence++;
+
+    // acknowledge the packet
+    response.setType(QXmppIq::Result);
+    m_stream->sendPacket(response);
+}
+
+void QXmppTransferManager::ibbOpenIqReceived(const QXmppIbbOpenIq &iq)
+{
+    QXmppIq response;
+    response.setTo(iq.from());
+    response.setId(iq.id());
+
+    QXmppTransferJob *job = getJobBySid(iq.from(), iq.sid());
+    if (!job ||
+        job->direction() != QXmppTransferJob::IncomingDirection ||
+        job->method() != QXmppTransferJob::InBandMethod)
+    {
+        // the job is unknown, cancel it
+        QXmppStanza::Error error(QXmppStanza::Error::Cancel, QXmppStanza::Error::ItemNotFound);
+        response.setType(QXmppIq::Error);
+        response.setError(error);
+        m_stream->sendPacket(response);
+        return;
+    }
+
+    if (iq.blockSize() > m_ibbBlockSize)
+    {
+        // we prefer a smaller block size
+        QXmppStanza::Error error(QXmppStanza::Error::Modify, QXmppStanza::Error::ResourceConstraint);
+        response.setType(QXmppIq::Error);
+        response.setError(error);
+        m_stream->sendPacket(response);
+        return;
+    }
+
+    job->m_blockSize = iq.blockSize();
+    job->setState(QXmppTransferJob::TransferState);
+
+    // accept transfer
+    response.setType(QXmppIq::Result);
+    m_stream->sendPacket(response);
+}
+
+void QXmppTransferManager::ibbResponseReceived(const QXmppIq &iq)
+{
+    QXmppTransferJob *job = getJobByRequestId(iq.from(), iq.id());
+    if (!job ||
+        job->direction() != QXmppTransferJob::OutgoingDirection ||
+        job->method() != QXmppTransferJob::InBandMethod ||
+        job->state() == QXmppTransferJob::FinishedState)
+        return;
+
+    // if the IO device is closed, do nothing
+    if (!job->m_iodevice->isOpen())
+        return;
+
+    if (iq.type() == QXmppIq::Result)
+    {
+        const QByteArray buffer = job->m_iodevice->read(job->m_blockSize);
+        job->setState(QXmppTransferJob::TransferState);
+        if (buffer.size())
+        {
+            // send next data block
+            QXmppIbbDataIq dataIq;
+            dataIq.setTo(job->m_jid);
+            dataIq.setSid(job->m_sid);
+            dataIq.setSequence(job->m_ibbSequence++);
+            dataIq.setPayload(buffer);
+            job->m_requestId = dataIq.id();
+            m_stream->sendPacket(dataIq);
+
+            job->m_done += buffer.size();
+            job->progress(job->m_done, job->fileSize());
+        } else {
+            // close the bytestream
+            QXmppIbbCloseIq closeIq;
+            closeIq.setTo(job->m_jid);
+            closeIq.setSid(job->m_sid);
+            job->m_requestId = closeIq.id();
+            m_stream->sendPacket(closeIq);
+
+            job->terminate(QXmppTransferJob::NoError);
+        }
+    }
+    else if (iq.type() == QXmppIq::Error)
+    {
+        // close the bytestream
+        QXmppIbbCloseIq closeIq;
+        closeIq.setTo(job->m_jid);
+        closeIq.setSid(job->m_sid);
+        job->m_requestId = closeIq.id();
+        m_stream->sendPacket(closeIq);
+
+        job->terminate(QXmppTransferJob::ProtocolError);
+    }
+}
+
+void QXmppTransferManager::iqReceived(const QXmppIq &iq)
+{
+    // handle IQ from proxy
+    foreach (QXmppTransferJob *job, m_jobs)
+    {
+        if (job->m_socksProxy.jid() == iq.from() && job->m_requestId == iq.id())
+        {
+            if (job->m_socksSocket)
+            {
+                // proxy connection activation result
+                if (iq.type() == QXmppIq::Result)
+                {
+                    // proxy stream activated, start sending data
+                    job->setState(QXmppTransferJob::TransferState);
+                    connect(job->m_socksSocket, SIGNAL(bytesWritten(qint64)), job, SLOT(sendData()));
+                    connect(job->m_iodevice, SIGNAL(readyRead()), job, SLOT(sendData()));
+                    job->sendData();
+                } else if (iq.type() == QXmppIq::Error) {
+                    // proxy stream not activated, terminate
+                    emit logMessage(QXmppLogger::WarningMessage, "Could not activate SOCKS5 proxy bytestream");
+                    job->terminate(QXmppTransferJob::ProtocolError);
+                }
+            } else {
+                // we could not get host/port from proxy, procede without a proxy
+                if (iq.type() == QXmppIq::Error)
+                    socksServerSendOffer(job);
+            }
+            return;
+        }
+    }
+
+    QXmppTransferJob *job = getJobByRequestId(iq.from(), iq.id());
+    if (!job)
+        return;
+
+    if (job->method() == QXmppTransferJob::InBandMethod)
+        ibbResponseReceived(iq);
+    else if (job->method() == QXmppTransferJob::SocksMethod)
+        byteStreamResponseReceived(iq);
+    else if (iq.type() == QXmppIq::Error) {
+        // remote party cancelled stream initiation
+        job->terminate(QXmppTransferJob::AbortError);
+    }
+}
+
+void QXmppTransferManager::jobDestroyed(QObject *object)
+{
+    m_jobs.removeAll(static_cast<QXmppTransferJob*>(object));
+}
+
+void QXmppTransferManager::jobError(QXmppTransferJob::Error error)
+{
+    QXmppTransferJob *job = qobject_cast<QXmppTransferJob *>(sender());
+    if (!job || !m_jobs.contains(job))
+        return;
+
+    if (job->direction() == QXmppTransferJob::OutgoingDirection &&
+        job->method() == QXmppTransferJob::InBandMethod &&
+        error == QXmppTransferJob::AbortError)
+    {
+        // close the bytestream
+        QXmppIbbCloseIq closeIq;
+        closeIq.setTo(job->m_jid);
+        closeIq.setSid(job->m_sid);
+        job->m_requestId = closeIq.id();
+        m_stream->sendPacket(closeIq);
+    }
+}
+
+void QXmppTransferManager::jobFinished()
+{
+    QXmppTransferJob *job = qobject_cast<QXmppTransferJob *>(sender());
+    if (!job || !m_jobs.contains(job))
+        return;
+
+    emit finished(job);
+}
+
+void QXmppTransferManager::jobStateChanged(QXmppTransferJob::State state)
+{
+    QXmppTransferJob *job = qobject_cast<QXmppTransferJob *>(sender());
+    if (!job || !m_jobs.contains(job))
+        return;
+
+    if (job->direction() != QXmppTransferJob::IncomingDirection)
+        return;
+
+    // disconnect from the signal
+    disconnect(job, SIGNAL(stateChanged(QXmppTransferJob::State)), this, SLOT(jobStateChanged(QXmppTransferJob::State)));
+
+    QXmppStreamInitiationIq response;
+    response.setTo(job->jid());
+    response.setId(job->m_offerId);
+
+    // the job was refused by the local party
+    if (state != QXmppTransferJob::StartState || !job->m_iodevice || !job->m_iodevice->isWritable())
+    {
+        QXmppStanza::Error error(QXmppStanza::Error::Cancel, QXmppStanza::Error::Forbidden);
+        error.setCode(403);
+
+        response.setType(QXmppIq::Error);
+        response.setError(error);
+        m_stream->sendPacket(response);
+
+        job->terminate(QXmppTransferJob::AbortError);
+        return;
+    }
+
+    // the job was accepted by the local party
+    connect(job, SIGNAL(error(QXmppTransferJob::Error)), this, SLOT(jobError(QXmppTransferJob::Error)));
+
+    QXmppElement value;
+    value.setTagName("value");
+    if (job->method() == QXmppTransferJob::InBandMethod)
+        value.setValue(ns_ibb);
+    else if (job->method() == QXmppTransferJob::SocksMethod)
+        value.setValue(ns_bytestreams);
+
+    QXmppElement field;
+    field.setTagName("field");
+    field.setAttribute("var", "stream-method");
+    field.appendChild(value);
+
+    QXmppElement x;
+    x.setTagName("x");
+    x.setAttribute("xmlns", "jabber:x:data");
+    x.setAttribute("type", "submit");
+    x.appendChild(field);
+
+    QXmppElement feature;
+    feature.setTagName("feature");
+    feature.setAttribute("xmlns", ns_feature_negotiation);
+    feature.appendChild(x);
+
+    response.setType(QXmppIq::Result);
+    response.setProfile(QXmppStreamInitiationIq::FileTransfer);
+    response.setSiItems(feature);
+
+    m_stream->sendPacket(response);
+}
+
+/// Send file to a remote party.
+///
+/// The remote party will be given the choice to accept or refuse the transfer.
+///
+QXmppTransferJob *QXmppTransferManager::sendFile(const QString &jid, const QString &fileName, const QString &sid)
+{
+    QFileInfo info(fileName);
+
+    QXmppTransferFileInfo fileInfo;
+    fileInfo.setDate(info.lastModified());
+    fileInfo.setName(info.fileName());
+    fileInfo.setSize(info.size());
+
+    // open file
+    QIODevice *device = new QFile(fileName);
+    if (!device->open(QIODevice::ReadOnly))
+    {
+        delete device;
+        device = 0;
+    }
+
+    // hash file
+    if (device && !device->isSequential())
+    {
+        QCryptographicHash hash(QCryptographicHash::Md5);
+        QByteArray buffer;
+        while (device->bytesAvailable())
+        {
+            buffer = device->read(16384);
+            hash.addData(buffer);
+        }
+        device->reset();
+        fileInfo.setHash(hash.result());
+    }
+
+    // create job
+    return sendFile(jid, device, fileInfo, sid);
+}
+
+/// Send file to a remote party.
+///
+/// The remote party will be given the choice to accept or refuse the transfer.
+///
+QXmppTransferJob *QXmppTransferManager::sendFile(const QString &jid, QIODevice *device, const QXmppTransferFileInfo &fileInfo, const QString &sid)
+{
+    QXmppTransferJob *job = new QXmppTransferJob(jid, QXmppTransferJob::OutgoingDirection, this);
+    if (sid.isEmpty())
+        job->m_sid = generateStanzaHash();
+    else
+        job->m_sid = sid;
+    job->m_fileInfo = fileInfo;
+    job->m_iodevice = device;
+    if (device)
+        device->setParent(job);
+
+    // check file is open
+    if (!device || !device->isReadable())
+    {
+        job->terminate(QXmppTransferJob::FileAccessError);
+        return job;
+    }
+
+    // check we support some methods
+    if (!m_supportedMethods)
+    {
+        job->terminate(QXmppTransferJob::ProtocolError);
+        return job;
+    }
+
+    // prepare negotiation
+    QXmppElementList items;
+
+    QXmppElement file;
+    file.setTagName("file");
+    file.setAttribute("xmlns", ns_stream_initiation_file_transfer);
+    file.setAttribute("date", datetimeToString(job->fileDate()));
+    file.setAttribute("hash", job->fileHash().toHex());
+    file.setAttribute("name", job->fileName());
+    file.setAttribute("size", QString::number(job->fileSize()));
+    items.append(file);
+ 
+    QXmppElement feature;
+    feature.setTagName("feature");
+    feature.setAttribute("xmlns", ns_feature_negotiation);
+
+    QXmppElement x;
+    x.setTagName("x");
+    x.setAttribute("xmlns", "jabber:x:data");
+    x.setAttribute("type", "form");
+    feature.appendChild(x);
+
+    QXmppElement field;
+    field.setTagName("field");
+    field.setAttribute("var", "stream-method");
+    field.setAttribute("type", "list-single");
+    x.appendChild(field);
+
+    // add supported stream methods
+    if (m_supportedMethods & QXmppTransferJob::InBandMethod)
+    {
+        QXmppElement option;
+        option.setTagName("option");
+        field.appendChild(option);
+
+        QXmppElement value;
+        value.setTagName("value");
+        value.setValue(ns_ibb);
+        option.appendChild(value);
+    }
+    if (m_supportedMethods & QXmppTransferJob::SocksMethod)
+    {
+        QXmppElement option;
+        option.setTagName("option");
+        field.appendChild(option);
+
+        QXmppElement value;
+        value.setTagName("value");
+        value.setValue(ns_bytestreams);
+        option.appendChild(value);
+    }
+
+    items.append(feature);
+
+    // start job
+    m_jobs.append(job);
+    connect(job, SIGNAL(destroyed(QObject*)), this, SLOT(jobDestroyed(QObject*)));
+    connect(job, SIGNAL(error(QXmppTransferJob::Error)), this, SLOT(jobError(QXmppTransferJob::Error)));
+    connect(job, SIGNAL(finished()), this, SLOT(jobFinished()));
+
+    QXmppStreamInitiationIq request;
+    request.setType(QXmppIq::Set);
+    request.setTo(jid);
+    request.setProfile(QXmppStreamInitiationIq::FileTransfer);
+    request.setSiItems(items);
+    request.setSiId(job->m_sid);
+    job->m_requestId = request.id();
+    m_stream->sendPacket(request);
+
+    return job;
+}
+
+void QXmppTransferManager::socksServerConnected(QTcpSocket *socket, const QString &hostName, quint16 port)
+{
+    const QString ownJid = m_stream->configuration().jid();
+    foreach (QXmppTransferJob *job, m_jobs)
+    {
+        if (hostName == streamHash(job->m_sid, ownJid, job->jid()) && port == 0)
+        {
+            job->m_socksSocket = socket;
+            return;
+        }
+    }
+    emit logMessage(QXmppLogger::WarningMessage, "QXmppSocksServer got a connection for a unknown stream");
+    socket->close();
+}
+
+void QXmppTransferManager::socksServerSendOffer(QXmppTransferJob *job)
+{
+    const QString ownJid = m_stream->configuration().jid();
+    QList<QXmppByteStreamIq::StreamHost> streamHosts;
+
+    // discover local IPs
+    if (!m_proxyOnly)
+    {
+        foreach (const QNetworkInterface &interface, QNetworkInterface::allInterfaces())
+        {
+            if (!(interface.flags() & QNetworkInterface::IsRunning) ||
+                interface.flags() & QNetworkInterface::IsLoopBack)
+                continue;
+
+            foreach (const QNetworkAddressEntry &entry, interface.addressEntries())
+            {
+                if (entry.ip().protocol() != QAbstractSocket::IPv4Protocol ||
+                    entry.netmask().isNull() ||
+                    entry.netmask() == QHostAddress::Broadcast)
+                    continue;
+
+                QXmppByteStreamIq::StreamHost streamHost;
+                streamHost.setHost(entry.ip());
+                streamHost.setPort(m_socksServer->serverPort());
+                streamHost.setJid(ownJid);
+                streamHosts.append(streamHost);
+            }
+        }
+    }
+
+    // add proxy
+    if (!job->m_socksProxy.jid().isEmpty())
+        streamHosts.append(job->m_socksProxy);
+
+    // check we have some stream hosts
+    if (!streamHosts.size())
+    {
+        emit logMessage(QXmppLogger::WarningMessage, "Could not determine local stream hosts");
+        job->terminate(QXmppTransferJob::ProtocolError);
+        return;
+    }
+
+    // send offer
+    QXmppByteStreamIq streamIq;
+    streamIq.setType(QXmppIq::Set);
+    streamIq.setTo(job->m_jid);
+    streamIq.setSid(job->m_sid);
+    streamIq.setStreamHosts(streamHosts);
+    job->m_requestId = streamIq.id();
+    m_stream->sendPacket(streamIq);
+}
+
+void QXmppTransferManager::streamInitiationIqReceived(const QXmppStreamInitiationIq &iq)
+{
+    if (iq.type() == QXmppIq::Result)
+        streamInitiationResultReceived(iq);
+    else if (iq.type() == QXmppIq::Set)
+        streamInitiationSetReceived(iq);
+}
+
+// The remote party has accepted an outgoing transfer.
+void QXmppTransferManager::streamInitiationResultReceived(const QXmppStreamInitiationIq &iq)
+{
+    QXmppTransferJob *job = getJobByRequestId(iq.from(), iq.id());
+    if (!job ||
+        job->direction() != QXmppTransferJob::OutgoingDirection ||
+        job->state() != QXmppTransferJob::OfferState)
+        return;
+
+    foreach (const QXmppElement &item, iq.siItems())
+    {
+        if (item.tagName() == "feature" && item.attribute("xmlns") == ns_feature_negotiation)
+        {
+            QXmppElement field = item.firstChildElement("x").firstChildElement("field");
+            while (!field.isNull())
+            {
+                if (field.attribute("var") == "stream-method")
+                {
+                    if ((field.firstChildElement("value").value() == ns_ibb) &&
+                        (m_supportedMethods & QXmppTransferJob::InBandMethod))
+                        job->m_method = QXmppTransferJob::InBandMethod;
+                    else if ((field.firstChildElement("value").value() == ns_bytestreams) &&
+                             (m_supportedMethods & QXmppTransferJob::SocksMethod))
+                        job->m_method = QXmppTransferJob::SocksMethod;
+                }
+                field = field.nextSiblingElement("field");
+            }
+        }
+    }
+
+    // remote party accepted stream initiation
+    job->setState(QXmppTransferJob::StartState);
+    if (job->method() == QXmppTransferJob::InBandMethod)
+    {
+        // lower block size for IBB
+        job->m_blockSize = m_ibbBlockSize;
+
+        QXmppIbbOpenIq openIq;
+        openIq.setTo(job->m_jid);
+        openIq.setSid(job->m_sid);
+        openIq.setBlockSize(job->m_blockSize);
+        job->m_requestId = openIq.id();
+        m_stream->sendPacket(openIq);
+    } else if (job->method() == QXmppTransferJob::SocksMethod) {
+        if (!m_socksServer->isListening())
+        {
+            emit logMessage(QXmppLogger::WarningMessage, "QXmppSocksServer is not listening");
+            job->terminate(QXmppTransferJob::ProtocolError);
+            return;
+        }
+        if (!m_proxy.isEmpty())
+        {
+            job->m_socksProxy.setJid(m_proxy);
+
+            // query proxy
+            QXmppByteStreamIq streamIq;
+            streamIq.setType(QXmppIq::Get);
+            streamIq.setTo(job->m_socksProxy.jid());
+            streamIq.setSid(job->m_sid);
+            job->m_requestId = streamIq.id();
+            m_stream->sendPacket(streamIq);
+        } else {
+            socksServerSendOffer(job);
+        }
+    } else {
+        emit logMessage(QXmppLogger::WarningMessage, "QXmppTransferManager received an unsupported method");
+        job->terminate(QXmppTransferJob::ProtocolError);
+    }
+}
+
+void QXmppTransferManager::streamInitiationSetReceived(const QXmppStreamInitiationIq &iq)
+{
+    QXmppStreamInitiationIq response;
+    response.setTo(iq.from());
+    response.setId(iq.id());
+
+    // check we support the profile
+    if (iq.profile() != QXmppStreamInitiationIq::FileTransfer)
+    {
+        // FIXME : we should add:
+        // <bad-profile xmlns='http://jabber.org/protocol/si'/>
+        QXmppStanza::Error error(QXmppStanza::Error::Cancel, QXmppStanza::Error::BadRequest);
+        error.setCode(400);
+
+        response.setType(QXmppIq::Error);
+        response.setError(error);
+        m_stream->sendPacket(response);
+        return;
+    }
+
+    // check there is a receiver connected to the fileReceived() signal
+    if (!receivers(SIGNAL(fileReceived(QXmppTransferJob*))))
+    {
+        QXmppStanza::Error error(QXmppStanza::Error::Cancel, QXmppStanza::Error::Forbidden);
+        error.setCode(403);
+
+        response.setType(QXmppIq::Error);
+        response.setError(error);
+        m_stream->sendPacket(response);
+        return;
+    }
+
+    // check the stream type
+    QXmppTransferJob *job = new QXmppTransferJob(iq.from(), QXmppTransferJob::IncomingDirection, this);
+    int offeredMethods = QXmppTransferJob::NoMethod;
+    job->m_offerId = iq.id();
+    job->m_sid = iq.siId();
+    job->m_mimeType = iq.mimeType();
+    foreach (const QXmppElement &item, iq.siItems())
+    {
+        if (item.tagName() == "feature" && item.attribute("xmlns") == ns_feature_negotiation)
+        {
+            QXmppElement field = item.firstChildElement("x").firstChildElement("field");
+            while (!field.isNull())
+            {
+                if (field.attribute("var") == "stream-method" && field.attribute("type") == "list-single")
+                {
+                    QXmppElement option = field.firstChildElement("option");
+                    while (!option.isNull())
+                    {
+                        if (option.firstChildElement("value").value() == ns_ibb)
+                            offeredMethods = offeredMethods | QXmppTransferJob::InBandMethod;
+                        else if (option.firstChildElement("value").value() == ns_bytestreams)
+                            offeredMethods = offeredMethods | QXmppTransferJob::SocksMethod;
+                        option = option.nextSiblingElement("option");
+                    }
+                }
+                field = field.nextSiblingElement("field");
+            }
+        }
+        else if (item.tagName() == "file" && item.attribute("xmlns") == ns_stream_initiation_file_transfer)
+        {
+            job->m_fileInfo.setDate(datetimeFromString(item.attribute("date")));
+            job->m_fileInfo.setHash(QByteArray::fromHex(item.attribute("hash").toAscii()));
+            job->m_fileInfo.setName(item.attribute("name"));
+            job->m_fileInfo.setSize(item.attribute("size").toLongLong());
+        }
+    }
+
+    // select a method supported by both parties
+    int sharedMethods = (offeredMethods & m_supportedMethods);
+    if (sharedMethods & QXmppTransferJob::SocksMethod)
+        job->m_method = QXmppTransferJob::SocksMethod;
+    else if (sharedMethods & QXmppTransferJob::InBandMethod)
+        job->m_method = QXmppTransferJob::InBandMethod;
+    else
+    {
+        // FIXME : we should add:
+        // <no-valid-streams xmlns='http://jabber.org/protocol/si'/>
+        QXmppStanza::Error error(QXmppStanza::Error::Cancel, QXmppStanza::Error::BadRequest);
+        error.setCode(400);
+
+        response.setType(QXmppIq::Error);
+        response.setError(error);
+        m_stream->sendPacket(response);
+    
+        delete job;
+        return;
+    }
+
+    // register job
+    m_jobs.append(job);
+    connect(job, SIGNAL(destroyed(QObject*)), this, SLOT(jobDestroyed(QObject*)));
+    connect(job, SIGNAL(finished()), this, SLOT(jobFinished()));
+    connect(job, SIGNAL(stateChanged(QXmppTransferJob::State)), this, SLOT(jobStateChanged(QXmppTransferJob::State)));
+
+    // allow user to accept or decline the job
+    emit fileReceived(job);
+}
+
+/// Return the JID of the bytestream proxy to use for
+/// outgoing transfers.
+///
+
+QString QXmppTransferManager::proxy() const
+{
+    return m_proxy;
+}
+
+/// Set the JID of the SOCKS5 bytestream proxy to use for
+/// outgoing transfers.
+///
+/// If you set a proxy, when you send a file the proxy will
+/// be offered to the recipient in addition to your own IP
+/// addresses.
+///
+
+void QXmppTransferManager::setProxy(const QString &proxyJid)
+{
+    m_proxy = proxyJid;
+}
+
+/// Return whether the proxy will systematically be used for
+/// outgoing SOCKS5 bytestream transfers.
+///
+
+bool QXmppTransferManager::proxyOnly() const
+{
+    return m_proxyOnly;
+}
+
+/// Set whether the proxy should systematically be used for
+/// outgoing SOCKS5 bytestream transfers.
+///
+/// \note If you set this to true and do not provide a proxy
+/// using setProxy(), your outgoing transfers will fail!
+///
+
+void QXmppTransferManager::setProxyOnly(bool proxyOnly)
+{
+    m_proxyOnly = proxyOnly;
+}
+
+/// Return the supported stream methods.
+///
+/// The methods are a combination of zero or more QXmppTransferJob::Method.
+///
+
+QXmppTransferJob::Methods QXmppTransferManager::supportedMethods() const
+{
+    return m_supportedMethods;
+}
+
+/// Set the supported stream methods. This allows you to selectively
+/// enable or disable stream methods (In-Band or SOCKS5 bytestreams).
+///
+/// The methods argument is a combination of zero or more
+/// QXmppTransferJob::Method.
+///
+
+void QXmppTransferManager::setSupportedMethods(QXmppTransferJob::Methods methods)
+{
+    m_supportedMethods = methods;
+}