Method installUpdates

launcher/UpdateController.cpp:87–358

void UpdateController::installUpdates()
{
    qint64 pid = -1;
    QStringList args;
    bool started = false;

    qDebug() << "Installing updates.";
#ifdef Q_OS_WIN
    QString finishCmd = QApplication::applicationFilePath();
#elif defined Q_OS_LINUX
    QString finishCmd = FS::PathCombine(m_root, BuildConfig.LAUNCHER_NAME);
#elif defined Q_OS_MAC
    QString finishCmd = QApplication::applicationFilePath();
#else
#error Unsupported operating system.
#endif

    QString backupPath = FS::PathCombine(m_root, "update", "backup");
    QDir origin(m_root);

    // clean up the backup folder. it should be empty before we start
    if(!FS::deletePath(backupPath))
    {
        qWarning() << "couldn't remove previous backup folder" << backupPath;
    }
    // and it should exist.
    if(!FS::ensureFolderPathExists(backupPath))
    {
        qWarning() << "couldn't create folder" << backupPath;
        return;
    }

    bool useXPHack = false;
    QString exePath;
    QString exeOrigin;
    QString exeBackup;

    // perform the update operations
    for(auto op: m_operations)
    {
        switch(op.type)
        {
            // replace = move original out to backup, if it exists, move the new file in its place
            case GoUpdate::Operation::OP_REPLACE:
            {
#ifdef Q_OS_WIN32
                QString windowsExeName = BuildConfig.LAUNCHER_NAME + ".exe";
                // hack for people renaming the .exe because ... reasons :)
                if(op.destination == windowsExeName)
                {
                    op.destination = QFileInfo(QApplication::applicationFilePath()).fileName();
                }
#endif
                QFileInfo destination (FS::PathCombine(m_root, op.destination));
#ifdef Q_OS_WIN32
                if(QSysInfo::windowsVersion() < QSysInfo::WV_VISTA)
                {
                    if(destination.fileName() == windowsExeName)