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// SPDX-License-Identifier: GPL-3.0-only
/*
* PolyMC - Minecraft Launcher
* Copyright (C) 2022 dada513 <dada513@protonmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright 2013-2022 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "DesktopServices.h"
#include <QDir>
#include <QDesktopServices>
#include <QProcess>
#include <QDebug>
#include "Application.h"
/**
* This shouldn't exist, but until QTBUG-9328 and other unreported bugs are fixed, it needs to be a thing.
*/
#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/wait.h>
template <typename T>
bool IndirectOpen(T callable, qint64 *pid_forked = nullptr)
{
auto pid = fork();
if(pid_forked)
{
if(pid > 0)
*pid_forked = pid;
else
*pid_forked = 0;
}
if(pid == -1)
{
qWarning() << "IndirectOpen failed to fork: " << errno;
return false;
}
// child - do the stuff
if(pid == 0)
{
// unset all this garbage so it doesn't get passed to the child process
qunsetenv("LD_PRELOAD");
qunsetenv("LD_LIBRARY_PATH");
qunsetenv("LD_DEBUG");
qunsetenv("QT_PLUGIN_PATH");
qunsetenv("QT_FONTPATH");
// open the URL
auto status = callable();
// detach from the parent process group.
setsid();
// die. now. do not clean up anything, it would just hang forever.
_exit(status ? 0 : 1);
}
else
{
//parent - assume it worked.
int status;
while (waitpid(pid, &status, 0))
{
if(WIFEXITED(status))
{
return WEXITSTATUS(status) == 0;
}
if(WIFSIGNALED(status))
{
return false;
}
}
return true;
}
}
#endif
namespace DesktopServices {
bool openDirectory(const QString &path, bool ensureExists)
{
qDebug() << "Opening directory" << path;
QDir parentPath;
QDir dir(path);
if (!dir.exists())
{
parentPath.mkpath(dir.absolutePath());
}
auto f = [&]()
{
return QDesktopServices::openUrl(QUrl::fromLocalFile(dir.absolutePath()));
};
#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
if(!isFlatpak())
{
return IndirectOpen(f);
}
else
{
return f();
}
#else
return f();
#endif
}
bool openFile(const QString &path)
{
qDebug() << "Opening file" << path;
auto f = [&]()
{
return QDesktopServices::openUrl(QUrl::fromLocalFile(path));
};
#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
if(!isFlatpak())
{
return IndirectOpen(f);
}
else
{
return f();
}
#else
return f();
#endif
}
bool openFile(const QString &application, const QString &path, const QString &workingDirectory, qint64 *pid)
{
qDebug() << "Opening file" << path << "using" << application;
#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
// FIXME: the pid here is fake. So if something depends on it, it will likely misbehave
if(!isFlatpak())
{
return IndirectOpen([&]()
{
return QProcess::startDetached(application, QStringList() << path, workingDirectory);
}, pid);
}
else
{
return QProcess::startDetached(application, QStringList() << path, workingDirectory, pid);
}
#else
return QProcess::startDetached(application, QStringList() << path, workingDirectory, pid);
#endif
}
bool run(const QString &application, const QStringList &args, const QString &workingDirectory, qint64 *pid)
{
qDebug() << "Running" << application << "with args" << args.join(' ');
#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
if(!isFlatpak())
{
// FIXME: the pid here is fake. So if something depends on it, it will likely misbehave
return IndirectOpen([&]()
{
return QProcess::startDetached(application, args, workingDirectory);
}, pid);
}
else
{
return QProcess::startDetached(application, args, workingDirectory, pid);
}
#else
return QProcess::startDetached(application, args, workingDirectory, pid);
#endif
}
bool openUrl(const QUrl &url)
{
qDebug() << "Opening URL" << url.toString();
auto f = [&]()
{
return QDesktopServices::openUrl(url);
};
#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
if(!isFlatpak())
{
return IndirectOpen(f);
}
else
{
return f();
}
#else
return f();
#endif
}
bool isFlatpak()
{
#ifdef Q_OS_LINUX
return QFile::exists("/.flatpak-info");
#else
return false;
#endif
}
}
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