ExtendedAttributes.h

/*-
 * Copyright (c) 2022-23 Simon Peter <probono@puredarwin.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
 
/* We are using command line tools to modify extended attributes because
 * we can set those tools to setuid root. This allows us to set extended
 * attributes on files that we do not have write access to.
 */
 
#ifndef EXTENDEDATTRIBUTES_H
#define EXTENDEDATTRIBUTES_H
 
#include <QFile>
#include <QByteArray>
 
class ExtendedAttributes
{
public:
    ExtendedAttributes(const QString &filePath);
 
    bool write(const QString &attributeName, const QByteArray &attributeValue);
 
    QByteArray read(const QString &attributeName);
 
    bool clear(const QString &attributeName);
 
private:
    QFile m_file; 
};
 
#endif // EXTENDEDATTRIBUTES_H