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** Foundation and appearing in the file LICENSE.GPL included in the
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**************************************************************************/
#include "adminauthorization.h"

#include "utils.h"

#include <QDebug>
#include <QDir>

#ifdef Q_CC_MINGW
# ifndef _WIN32_WINNT
#  define _WIN32_WINNT 0x0501
# endif
#endif

#include <windows.h>

struct DeCoInitializer
{
    DeCoInitializer()
        : neededCoInit(CoInitialize(NULL) == S_OK)
    {
    }
    ~DeCoInitializer()
    {
        if (neededCoInit)
            CoUninitialize();
    }
    bool neededCoInit;
};

AdminAuthorization::AdminAuthorization()
{
}

bool AdminAuthorization::authorize()
{
    setAuthorized();
    emit authorized();
    return true;
}

bool AdminAuthorization::hasAdminRights()
{
    SID_IDENTIFIER_AUTHORITY authority = { SECURITY_NT_AUTHORITY };
    PSID adminGroup;
    // Initialize SID.
    if (!AllocateAndInitializeSid(&authority,
                                  2,
                                  SECURITY_BUILTIN_DOMAIN_RID,
                                  DOMAIN_ALIAS_RID_ADMINS,
                                  0, 0, 0, 0, 0, 0,
                                  &adminGroup))
        return false;

    BOOL isInAdminGroup = FALSE;
    if (!CheckTokenMembership(0, adminGroup, &isInAdminGroup))
        isInAdminGroup = FALSE;

    FreeSid(adminGroup);
    return isInAdminGroup;
}

bool AdminAuthorization::execute(QWidget *, const QString &program, const QStringList &arguments)
{
    DeCoInitializer _;

    const QString file = QDir::toNativeSeparators(program);
    const QString args = QInstaller::createCommandline(QString(), arguments);

    SHELLEXECUTEINFOW shellExecuteInfo = { 0 };
    shellExecuteInfo.nShow = SW_HIDE;
    shellExecuteInfo.lpVerb = L"runas";
    shellExecuteInfo.lpFile = (wchar_t *)file.utf16();
    shellExecuteInfo.cbSize = sizeof(SHELLEXECUTEINFOW);
    shellExecuteInfo.lpParameters = (wchar_t *)args.utf16();

    qDebug() << QString::fromLatin1("Starting elevated process %1 with arguments: %2.").arg(file, args);
    ShellExecuteExW(&shellExecuteInfo);
    qDebug() << "Finished starting elevated process.";

    return GetLastError() == ERROR_SUCCESS;
}