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diff --git a/src/libs/installer/abstractarchive.h b/src/libs/installer/abstractarchive.h
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+/**************************************************************************
+**
+** Copyright (C) 2022 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Installer Framework.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+**************************************************************************/
+
+#ifndef ABSTRACTARCHIVE_H
+#define ABSTRACTARCHIVE_H
+
+#include "installer_global.h"
+
+#include <QFile>
+#include <QDateTime>
+#include <QDataStream>
+#include <QPoint>
+
+#ifdef Q_OS_WIN
+typedef int mode_t;
+#endif
+
+namespace QInstaller {
+
+struct INSTALLER_EXPORT ArchiveEntry
+{
+    ArchiveEntry()
+        : isDirectory(false)
+        , isSymbolicLink(false)
+        , compressedSize(0)
+        , uncompressedSize(0)
+        , permissions_mode(0)
+    {}
+
+    ArchiveEntry(const ArchiveEntry &) = default;
+
+    QString path;
+    QDateTime utcTime;
+    QPoint archiveIndex;
+    bool isDirectory;
+    bool isSymbolicLink;
+    quint64 compressedSize;
+    quint64 uncompressedSize;
+    mode_t permissions_mode;
+    QFile::Permissions permissions_enum;
+};
+
+class INSTALLER_EXPORT AbstractArchive : public QObject
+{
+    Q_OBJECT
+    Q_DISABLE_COPY(AbstractArchive)
+
+public:
+    enum CompressionLevel {
+        Non = 0,
+        Fastest = 1,
+        Fast = 3,
+        Normal = 5,
+        Maximum = 7,
+        Ultra = 9
+    };
+    Q_ENUM(CompressionLevel)
+
+    explicit AbstractArchive(QObject *parent = nullptr);
+    virtual ~AbstractArchive() = 0;
+
+    virtual bool open(QIODevice::OpenMode mode) = 0;
+    virtual void close() = 0;
+    virtual void setFilename(const QString &filename) = 0;
+
+    virtual QString errorString() const;
+
+    virtual bool extract(const QString &dirPath) = 0;
+    virtual bool extract(const QString &dirPath, const quint64 totalFiles) = 0;
+    virtual bool create(const QStringList &data) = 0;
+    virtual QVector<ArchiveEntry> list() = 0;
+    virtual bool isSupported() = 0;
+
+    virtual void setCompressionLevel(const CompressionLevel level);
+
+Q_SIGNALS:
+    void currentEntryChanged(const QString &filename);
+    void completedChanged(const quint64 completed, const quint64 total);
+
+public Q_SLOTS:
+    virtual void cancel() = 0;
+
+protected:
+    void setErrorString(const QString &error);
+    CompressionLevel compressionLevel() const;
+
+private:
+    QString m_error;
+    CompressionLevel m_compressionLevel;
+};
+
+INSTALLER_EXPORT QDataStream &operator>>(QDataStream &istream, ArchiveEntry &entry);
+INSTALLER_EXPORT QDataStream &operator<<(QDataStream &ostream, const ArchiveEntry &entry);
+INSTALLER_EXPORT bool operator==(const ArchiveEntry &lhs, const ArchiveEntry &rhs);
+
+} // namespace QInstaller
+
+#endif // ABSTRACTARCHIVE_H