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/**************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
**************************************************************************/
#include "createdesktopentryoperation.h"
#include "errors.h"
#include "fileutils.h"
#include <QDir>
#include <QFile>
#include <QFileInfo>
#include <QProcessEnvironment>
#include <QTextStream>
using namespace QInstaller;
QString CreateDesktopEntryOperation::absoluteFileName()
{
const QString filename = arguments().first();
// give filename is already absolute
if (QFileInfo(filename).isAbsolute())
return filename;
// we're not searching for the first time, let's re-use the old value
if (hasValue(QLatin1String("directory")))
return QDir(value(QLatin1String("directory")).toString()).absoluteFilePath(filename);
const QProcessEnvironment env;
QStringList XDG_DATA_DIRS = env.value(QLatin1String("XDG_DATA_DIRS")).split(QLatin1Char(':'),
QString::SkipEmptyParts);
QStringList XDG_DATA_HOME = env.value(QLatin1String("XDG_DATA_HOME")).split(QLatin1Char(':'),
QString::SkipEmptyParts);
XDG_DATA_DIRS.push_back(QLatin1String("/usr/share")); // default path
XDG_DATA_HOME.push_back(QDir::home().absoluteFilePath(QLatin1String(".local/share"))); // default path
const QStringList directories = XDG_DATA_DIRS + XDG_DATA_HOME;
QString directory;
for (QStringList::const_iterator it = directories.begin(); it != directories.end(); ++it) {
if (it->isEmpty())
continue;
directory = QDir(*it).absoluteFilePath(QLatin1String("applications"));
QDir dir(directory);
// let's see whether this dir exists or we're able to create it
if (!dir.exists() && !QDir().mkpath(directory))
continue;
// we just try whether we're able to open the file in ReadWrite
QFile file(QDir(directory).absoluteFilePath(filename));
const bool existed = file.exists();
if (!file.open(QIODevice::ReadWrite))
continue;
file.close();
if (!existed)
file.remove();
break;
}
if (!QDir(directory).exists())
QDir().mkpath(directory);
setValue(QLatin1String("directory"), directory);
return QDir(directory).absoluteFilePath(filename);
}
CreateDesktopEntryOperation::CreateDesktopEntryOperation(PackageManagerCore *core)
: UpdateOperation(core)
{
setName(QLatin1String("CreateDesktopEntry"));
}
CreateDesktopEntryOperation::~CreateDesktopEntryOperation()
{
}
void CreateDesktopEntryOperation::backup()
{
const QString filename = absoluteFileName();
QFile file(filename);
if (!file.exists())
return;
try {
setValue(QLatin1String("backupOfExistingDesktopEntry"), generateTemporaryFileName(filename));
} catch (const QInstaller::Error &e) {
setErrorString(e.message());
return;
}
if (!file.copy(value(QLatin1String("backupOfExistingDesktopEntry")).toString()))
setErrorString(tr("Cannot backup file \"%1\": %2").arg(QDir::toNativeSeparators(filename), file.errorString()));
}
bool CreateDesktopEntryOperation::performOperation()
{
if (!checkArgumentCount(2))
return false;
const QString filename = absoluteFileName();
const QString &values = arguments().at(1);
QFile file(filename);
if (file.exists() && !file.remove()) {
setError(UserDefinedError);
setErrorString(tr("Failed to overwrite file \"%1\".").arg(QDir::toNativeSeparators(filename)));
return false;
}
if(!file.open(QIODevice::WriteOnly)) {
setError(UserDefinedError);
setErrorString(tr("Cannot write desktop entry to \"%1\".").arg(QDir::toNativeSeparators(filename)));
return false;
}
QFile::setPermissions(filename, QFile::ReadOwner | QFile::WriteOwner | QFile::ReadUser | QFile::ReadGroup
| QFile::ReadOther | QFile::ExeOwner | QFile::ExeGroup | QFile::ExeOther);
QTextStream stream(&file);
stream.setCodec("UTF-8");
stream << QLatin1String("[Desktop Entry]") << endl;
// Type=Application\nExec=qtcreator\nPath=...
const QStringList pairs = values.split(QLatin1Char('\n'));
for (QStringList::const_iterator it = pairs.begin(); it != pairs.end(); ++it)
stream << *it << endl;
return true;
}
bool CreateDesktopEntryOperation::undoOperation()
{
const QString filename = absoluteFileName();
// first remove the link
QFile file(filename);
if (file.exists() && !file.remove()) {
qWarning() << "Cannot delete file" << filename << ":" << file.errorString();
return true;
}
if (!hasValue(QLatin1String("backupOfExistingDesktopEntry")))
return true;
QFile backupFile(value(QLatin1String("backupOfExistingDesktopEntry")).toString());
if (!backupFile.exists()) {
// do not treat this as a real error: The backup file might have been just nuked by the user.
qWarning() << "Cannot restore original desktop entry at" << filename
<< ": Backup file" << backupFile.fileName() << "does not exist anymore.";
return true;
}
if (!backupFile.rename(filename))
qWarning() << "Cannot restore the file" << filename << ":" << backupFile.errorString();
return true;
}
bool CreateDesktopEntryOperation::testOperation()
{
return true;
}
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