include vc redist and wuaueng.dll repair script

README.md

@@ -16,9 +16,9 @@ There have even been people with older Intel and AMD systems who have been locke
 
 ## Bad Microsoft!
 
-<sup>If you are interested, you can read my original write up on discovering the CPU check [here](../../tree/old-kb4012218-19).</sup>
+If you are interested, you can read my original write up on discovering the CPU check [here](../../tree/old-kb4012218-19).
 
-Basically, inside a file called `wuaueng.dll` there are two functions: [`IsDeviceServiceable(void)`](https://gist.github.com/zeffy/e5ec266952932bc905eb0cbc6ed72185) and [`IsCPUSupported(void)`](https://gist.github.com/zeffy/1a8f8984d2bec97ae24af63a76278694). `IsDeviceServiceable(void)` is essentially a wrapper around `IsCPUSupported(void)` that caches the result it recieves and returns it on subsequent calls. 
+Basically, inside a file called `wuaueng.dll` there are two functions: [`IsDeviceServiceable(void)`](https://gist.github.com/zeffy/e5ec266952932bc905eb0cbc6ed72185) and [`IsCPUSupported(void)`](https://gist.github.com/zeffy/1a8f8984d2bec97ae24af63a76278694). `IsDeviceServiceable(void)` is essentially a wrapper around `IsCPUSupported(void)` that caches the result it recieves and recycles it on subsequent calls. 
 
 My patch takes advantage of this result caching behavior by setting the "hasn't run once" value to `FALSE` and the cached result to `TRUE`.
 
@@ -28,4 +28,21 @@ My patch takes advantage of this result caching behavior by setting the "hasn't
 - `wufuc` determines what service host process the Windows Update service (`wuauserv`) runs in, and injects itself into it.
 - Once injected, it applies a hook to `LoadLibraryEx` that automatically patches `wuaueng.dll` when it is loaded.
 - Any previously loaded `wuaueng.dll` is also patched.
-- **No system files are modified!**
+
+### Several improvements over my script-based approach:		
+- **No system files are modified!***
+- Heuristic byte signature patching persists over new updates.		
+- C is best language.		
+- No external dependencies except for Microsoft Visual C++ 2015 Redistributable.	
+
+### How to install/uninstall?
+
+Just run move the `wufuc` folder to wherever you want and run `install_wufuc.bat` as administrator.
+
+To uninstall run `uninstall_wufuc.bat` as administrator. 
+
+To temporarily disable the patch, just go to the Task Scheduler and disable the `wufuc.{ ... }` task, then restart your computer.
+
+### How do I remove your old patch and use this instead?
+
+I've included a utility script called `repair_wuaueng.dll.bat` that will initiate an sfc scan and attempt to automatically revert any changes made to `wuaueng.dll`.

install/install_wufuc.bat

@@ -82,9 +82,9 @@ for %%a in (%SUPPORTED_HOTFIXES%) do (
 )
 
 echo.
-echo Warning - Detected that no supported updates are installed! 
+echo WARNING - Detected that no supported updates are installed! 
 echo.
-echo This can be a false warning, if you are sure you know you need wufuc you
+echo This can be a false warning, if you are certain that need wufuc then you
 echo can continue (there will be no side effects even if you don't need it)
 
 set /p CONTINUE=Enter 'Y' if you still want to continue: 
@@ -101,18 +101,26 @@ set /p CONTINUE=Enter 'Y' if you want to install wufuc:
 if /I not "%CONTINUE%"=="Y" goto :cancel
 echo.
 
+set "vcredist_path=%~dp0_Redist\vcredist_%WINDOWS_ARCHITECTURE%.exe"
+if exist "%vcredist_path%" (
+    echo Installing Microsoft Visual C^+^+ 2017 Redistributable ^(%WINDOWS_ARCHITECTURE%^)...
+    "%vcredist_path%" /passive /norestart
+    goto :install
+)
+
+echo Couldn't locate and install Microsoft Visual C^+^+ 2017 Redistributable ^(%WINDOWS_ARCHITECTURE%^).
+
+set /p CONTINUE=Enter 'Y' if you still want to continue: 
+if /I not "%CONTINUE%"=="Y" goto :cancel
+echo.
+
 :install
 set "wufuc_task=wufuc.{72EEE38B-9997-42BD-85D3-2DD96DA17307}"
 schtasks /Create /XML "%~dp0wufuc.xml" /TN "%wufuc_task%" /F
-echo %ERRORLEVEL%
 schtasks /Change /TN "%wufuc_task%" /TR "'%systemroot%\system32\rundll32.exe' """%wufuc_dll%""",Rundll32Entry"
-echo %ERRORLEVEL%
 schtasks /Change /TN "%wufuc_task%" /ENABLE
-echo %ERRORLEVEL%
 rundll32 "%wufuc_dll%",Rundll32Unload
-echo %ERRORLEVEL%
 schtasks /Run /TN "%wufuc_task%"
-echo %ERRORLEVEL%
 
 echo.
 echo Installed and started wufuc!
@@ -129,4 +137,4 @@ exit
 echo.
 echo Canceled by user, press any key to exit...
 pause >nul
-exit
+exit

install/repair_wuaueng.dll.bat

@@ -0,0 +1,51 @@
+@echo off
+title install wufuc (repair wuaueng.dll) - v0.6
+:: 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
+)
+
+:confirmation
+echo You may want to use this script if you previously modified wuaueng.dll
+echo with "aio-wuaueng.dll-patch.bat" or by other means.
+echo.
+echo This will run the sfc utility and it will restore any changes that were made.
+
+set /p CONTINUE=Enter 'Y' if you want to repair wuaueng.dll: 
+if /I not "%CONTINUE%"=="Y" goto :cancel
+
+sfc /SCANFILE="%systemroot%\System32\wuaueng.dll"
+
+: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

install/uninstall_wufuc.bat

@@ -68,4 +68,4 @@ exit
 echo.
 echo Canceled by user, press any key to exit...
 pause >nul
-exit
+exit