PrismLauncher/launcher/DesktopServices.cpp

203 lines
5.8 KiB
C++

// SPDX-License-Identifier: GPL-3.0-only
/*
* Prism Launcher - 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 <QDebug>
#include <QDesktopServices>
#include <QDir>
#include <QProcess>
/**
* 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 <errno.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.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, [[maybe_unused]] bool ensureExists)
{
qDebug() << "Opening directory" << path;
QDir parentPath;
QDir dir(path);
if (ensureExists && !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 (!isSandbox()) {
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 (!isSandbox()) {
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 (!isSandbox()) {
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 (!isSandbox()) {
// 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 (!isSandbox()) {
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
}
bool isSnap()
{
#ifdef Q_OS_LINUX
return getenv("SNAP");
#else
return false;
#endif
}
bool isSandbox()
{
return isSnap() || isFlatpak();
}
} // namespace DesktopServices