main.cpp

/*
   Copyright (C) 2003-2010 by Warren Woodford
   Copyright (C) 2014-2023 by Adrian <adrian@mxlinux.org>

   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.

    Heavily modified by Adrian <adrian@mxlinux.org>
*/

#include <QApplication>
#include <QLibraryInfo>
#include <QLocale>
#include <QTranslator>

#include "common.h"
#include "mainwindow.h"

#include <unistd.h>

#ifndef VERSION
    #define VERSION "?.?.?.?"
#endif

int main(int argc, char *argv[])
{
    if (getuid() == 0) {
        qputenv("XDG_RUNTIME_DIR", "/run/user/0");
        qunsetenv("SESSION_MANAGER");
    }
    // Set Qt platform to XCB (X11) if not already set and we're in X11 environment
    if (qEnvironmentVariableIsEmpty("QT_QPA_PLATFORM")) {
        if (!qEnvironmentVariableIsEmpty("DISPLAY") && qEnvironmentVariableIsEmpty("WAYLAND_DISPLAY")) {
            qputenv("QT_QPA_PLATFORM", "xcb");
        }
    }

    QApplication app(argc, argv);
    if (getuid() == 0) {
        qputenv("HOME", "/root");
    }
    QDir::setCurrent(QStringLiteral("/root"));

    QApplication::setApplicationVersion(VERSION);
    QApplication::setWindowIcon(QIcon::fromTheme(QApplication::applicationName()));
    QApplication::setOrganizationName(QStringLiteral("MX-Linux"));

    QTranslator qtTran;
    if (qtTran.load("qt_" + QLocale().name(), QLibraryInfo::path(QLibraryInfo::TranslationsPath))) {
        QApplication::installTranslator(&qtTran);
    }

    QTranslator qtBaseTran;
    if (qtBaseTran.load("qtbase_" + QLocale().name(), QLibraryInfo::path(QLibraryInfo::TranslationsPath))) {
        QApplication::installTranslator(&qtBaseTran);
    }

    QTranslator appTran;
    if (appTran.load(QApplication::applicationName() + "_" + QLocale::system().name(),
                     "/usr/share/" + QApplication::applicationName() + "/locale")) {
        QApplication::installTranslator(&appTran);
    }

    // Root guard
    QFile loginUidFile {"/proc/self/loginuid"};
    if (loginUidFile.open(QIODevice::ReadOnly)) {
        QString loginUid = QString(loginUidFile.readAll()).trimmed();
        loginUidFile.close();
        if (loginUid == "0") {
            QMessageBox::critical(
                nullptr, QObject::tr("Error"),
                QObject::tr(
                    "You seem to be logged in as root, please log out and log in as normal user to use this program."));
            exit(EXIT_FAILURE);
        }
    }
    if (getuid() != 0) {
        if (!QFile::exists("/usr/bin/pkexec") && !QFile::exists("/usr/bin/gksu")) {
            QMessageBox::critical(nullptr, QObject::tr("Error"),
                                  QObject::tr("You must run this program with admin access."));
            exit(EXIT_FAILURE);
        }
    }
    MainWindow w;
    w.show();
    return QApplication::exec();
}