@echo off
title wufuc installer
:: Copyright (C) 2017 zeffy

:: 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, either version 3 of the License, or
:: (at your option) any later version.

:: 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 <http://www.gnu.org/licenses/>.

echo Copyright ^(C^) 2017 zeffy
echo This program comes with ABSOLUTELY NO WARRANTY.
echo This is free software, and you are welcome to redistribute it
echo under certain conditions; see COPYING.txt for details.
echo.

fltmc >nul 2>&1 || (
    echo This batch script requires administrator privileges. Right-click on
    echo %~nx0 and select "Run as administrator".
    goto :die
)

echo Checking system requirements...

if /I "%PROCESSOR_ARCHITECTURE%"=="AMD64" (
    goto :is_x64
) else (
    if /I "%PROCESSOR_ARCHITEW6432%"=="AMD64" (
        goto :is_x64
    )
    if /I "%PROCESSOR_ARCHITECTURE%"=="x86" (
        goto :is_x86
    )
)
goto :unsupported_os

:is_x86
set "WINDOWS_ARCHITECTURE=x86"
set "wufuc_dll=%~dp0wufuc32.dll"
goto :get_ver

:is_x64
set "WINDOWS_ARCHITECTURE=x64"
set "wufuc_dll=%~dp0wufuc64.dll"

:get_ver
for /f "tokens=*" %%i in ('wmic /output:stdout datafile where "name='%wufuc_dll:\=\\%'" get Version /value ^| find "="') do set "%%i"
title wufuc installer - v%Version%

:check_ver
wmic /output:stdout os get version | findstr "^6\.1\." >nul && (
    set "WINDOWS_VER=6.1"
    set "SUPPORTED_HOTFIXES=KB4022722 KB4022719 KB4019265 KB4019264 KB4015552 KB4015549 KB4015546 KB4012218"
    echo Detected supported operating system: Windows 7 %WINDOWS_ARCHITECTURE%
    goto :check_hotfix
)
wmic /output:stdout os get version | findstr "^6\.3\." >nul && (
    set "WINDOWS_VER=8.1"
    set "SUPPORTED_HOTFIXES=KB4022726 KB4022717 KB4019217 KB4019215 KB4015553 KB4015550 KB4015547 KB4012219"
    echo Detected supported operating system: Windows 8.1 %WINDOWS_ARCHITECTURE%
    goto :check_hotfix
)

:unsupported_os
echo Detected that you are using an unsupported operating system.
echo.
echo This patch only works on the following versions of Windows:
echo.
echo - Windows 7 (x64 and x86)
echo - Windows 8.1 (x64 and x86)
echo - Windows Server 2008 R2
echo - Windows Server 2012 R2
goto :die

:check_hotfix
for %%a in (%SUPPORTED_HOTFIXES%) do (
    wmic /output:stdout qfe get hotfixid | find "%%a" >nul && (
        set "INSTALLED_HOTFIX=%%a"
        echo Detected supported installed update: %%a
        goto :confirmation
    )
)
wmic /output:stdout qfe get /value 2>&1 | find "No Instance(s) Available" >nul && (
    echo WARNING - wmic qfe is broken, can't check installed updates...
    goto :confirmation
)
echo.
echo WARNING - Detected that no supported updates are installed.
echo.
echo   This warning could also mean that a new update came out and the
echo   wufuc installer script's list of updates hasn't been updated yet. 
echo   If this is definitely the case and you know which update it is,
echo   feel free to create an issue.  https://github.com/zeffy/wufuc/issues

:confirmation
echo.
echo wufuc disables the "Unsupported Hardware" message in Windows Update, 
echo and allows you to continue installing updates on Windows 7 and 8.1
echo systems with Intel Kaby Lake, AMD Ryzen, or other unsupported processors.
echo.
echo Please be absolutely sure you really need wufuc before continuing.
echo.
set /p CONTINUE=Enter 'Y' if you want to install wufuc: 
if /I not "%CONTINUE%"=="Y" goto :cancel
echo.

:install
set "wufuc_task=wufuc.{72EEE38B-9997-42BD-85D3-2DD96DA17307}"
net start Schedule
schtasks /Create /XML "%~dp0wufuc.xml" /TN "%wufuc_task%" /F
schtasks /Change /TN "%wufuc_task%" /TR "'%systemroot%\system32\rundll32.exe' """%wufuc_dll%""",Rundll32Entry"
schtasks /Change /TN "%wufuc_task%" /ENABLE
rundll32 "%wufuc_dll%",Rundll32Unload
schtasks /Run /TN "%wufuc_task%"

echo.
echo Installed and started wufuc, you can now continue installing updates! :^)
echo.
echo To uninstall, run uninstall_wufuc.bat as administrator.
goto :die

:die
echo.
echo Press any key to exit...
pause >nul
exit

:cancel
echo.
echo Canceled by user, press any key to exit...
pause >nul
exit