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diff --git a/daemon/quazip/quaziodevice.h b/daemon/quazip/quaziodevice.h
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+#ifndef QUAZIP_QUAZIODEVICE_H
+#define QUAZIP_QUAZIODEVICE_H
+
+/*
+Copyright (C) 2005-2014 Sergey A. Tachenov
+
+This file is part of QuaZIP.
+
+QuaZIP 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 3 of the License, or
+(at your option) any later version.
+
+QuaZIP 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.
+
+You should have received a copy of the GNU Lesser General Public License
+along with QuaZIP.  If not, see <http://www.gnu.org/licenses/>.
+
+See COPYING file for the full LGPL text.
+
+Original ZIP package is copyrighted by Gilles Vollant and contributors,
+see quazip/(un)zip.h files for details. Basically it's the zlib license.
+*/
+
+#include <QIODevice>
+#include "quazip_global.h"
+
+#include <zlib.h>
+
+class QuaZIODevicePrivate;
+
+/// A class to compress/decompress QIODevice.
+/**
+  This class can be used to compress any data written to QIODevice or
+  decompress it back. Compressing data sent over a QTcpSocket is a good
+  example.
+  */
+class QUAZIP_EXPORT QuaZIODevice: public QIODevice {
+  Q_OBJECT
+public:
+  /// Constructor.
+  /**
+    \param io The QIODevice to read/write.
+    \param parent The parent object, as per QObject logic.
+    */
+  QuaZIODevice(QIODevice *io, QObject *parent = NULL);
+  /// Destructor.
+  ~QuaZIODevice();
+  /// Flushes data waiting to be written.
+  /**
+    Unfortunately, as QIODevice doesn't support flush() by itself, the
+    only thing this method does is write the compressed data into the
+    device using Z_SYNC_FLUSH mode. If you need the compressed data to
+    actually be flushed from the buffer of the underlying QIODevice, you
+    need to call its flush() method as well, providing it supports it
+    (like QTcpSocket does). Example:
+    \code
+    QuaZIODevice dev(&sock);
+    dev.open(QIODevice::Write);
+    dev.write(yourDataGoesHere);
+    dev.flush();
+    sock->flush(); // this actually sends data to network
+    \endcode
+
+    This may change in the future versions of QuaZIP by implementing an
+    ugly hack: trying to cast the QIODevice using qobject_cast to known
+    flush()-supporting subclasses, and calling flush if the resulting
+    pointer is not zero.
+    */
+  virtual bool flush();
+  /// Opens the device.
+  /**
+    \param mode Neither QIODevice::ReadWrite nor QIODevice::Append are
+    not supported.
+    */
+  virtual bool open(QIODevice::OpenMode mode);
+  /// Closes this device, but not the underlying one.
+  /**
+    The underlying QIODevice is not closed in case you want to write
+    something else to it.
+    */
+  virtual void close();
+  /// Returns the underlying device.
+  QIODevice *getIoDevice() const;
+  /// Returns true.
+  virtual bool isSequential() const;
+protected:
+  /// Implementation of QIODevice::readData().
+  virtual qint64 readData(char *data, qint64 maxSize);
+  /// Implementation of QIODevice::writeData().
+  virtual qint64 writeData(const char *data, qint64 maxSize);
+private:
+  QuaZIODevicePrivate *d;
+};
+#endif // QUAZIP_QUAZIODEVICE_H