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diff --git a/daemon/quazip/quagzipfile.h b/daemon/quazip/quagzipfile.h
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+#ifndef QUAZIP_QUAGZIPFILE_H
+#define QUAZIP_QUAGZIPFILE_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 QuaGzipFilePrivate;
+
+/// GZIP file
+/**
+  This class is a wrapper around GZIP file access functions in zlib. Unlike QuaZip classes, it doesn't allow reading from a GZIP file opened as QIODevice, for example, if your GZIP file is in QBuffer. It only provides QIODevice access to a GZIP file contents, but the GZIP file itself must be identified by its name on disk or by descriptor id.
+  */
+class QUAZIP_EXPORT QuaGzipFile: public QIODevice {
+  Q_OBJECT
+public:
+  /// Empty constructor.
+  /**
+    Must call setFileName() before trying to open.
+    */
+  QuaGzipFile();
+  /// Empty constructor with a parent.
+  /**
+    Must call setFileName() before trying to open.
+    \param parent The parent object, as per QObject logic.
+    */
+  QuaGzipFile(QObject *parent);
+  /// Constructor.
+  /**
+    \param fileName The name of the GZIP file.
+    \param parent The parent object, as per QObject logic.
+    */
+  QuaGzipFile(const QString &fileName, QObject *parent = NULL);
+  /// Destructor.
+  virtual ~QuaGzipFile();
+  /// Sets the name of the GZIP file to be opened.
+  void setFileName(const QString& fileName);
+  /// Returns the name of the GZIP file.
+  QString getFileName() const;
+  /// Returns true.
+  /**
+    Strictly speaking, zlib supports seeking for GZIP files, but it is
+    poorly implemented, because there is no way to implement it
+    properly. For reading, seeking backwards is very slow, and for
+    writing, it is downright impossible. Therefore, QuaGzipFile does not
+    support seeking at all.
+    */
+  virtual bool isSequential() const;
+  /// Opens the file.
+  /**
+    \param mode Can be either QIODevice::Write or QIODevice::Read.
+    ReadWrite and Append aren't supported.
+    */
+  virtual bool open(QIODevice::OpenMode mode);
+  /// Opens the file.
+  /**
+    \overload
+    \param fd The file descriptor to read/write the GZIP file from/to.
+    \param mode Can be either QIODevice::Write or QIODevice::Read.
+    ReadWrite and Append aren't supported.
+    */
+  virtual bool open(int fd, QIODevice::OpenMode mode);
+  /// Flushes data to file.
+  /**
+    The data is written using Z_SYNC_FLUSH mode. Doesn't make any sense
+    when reading.
+    */
+  virtual bool flush();
+  /// Closes the file.
+  virtual void close();
+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:
+    // not implemented by design to disable copy
+    QuaGzipFile(const QuaGzipFile &that);
+    QuaGzipFile& operator=(const QuaGzipFile &that);
+    QuaGzipFilePrivate *d;
+};
+
+#endif // QUAZIP_QUAGZIPFILE_H