@echo off
REM ============================================================
REM  set-vnc-password.bat - reliably set the UltraVNC VNC password
REM  for the running service (uvnc_service / LocalSystem), which
REM  reads %ProgramData%\UltraVNC\ultravnc.ini.
REM
REM  Runs AS ADMINISTRATOR (auto-elevates). It first tries the
REM  UltraVNC CLI helpers (createpassword.exe / setpasswd.exe) and
REM  VERIFIES the password actually changed in ultravnc.ini; if they
REM  fail silently (as they can), it opens the UltraVNC settings GUI
REM  so you can set "VNC Password" there. Then it restarts the
REM  service. Use the SAME password in run.bat (ASCII, max 8 chars).
REM ============================================================
chcp 866 >nul
cd /d "%~dp0"

net session >nul 2>nul
if errorlevel 1 (
  echo Requesting administrator rights ...
  powershell -Command "Start-Process -FilePath '%~f0' -Verb RunAs"
  exit /b
)

set "UVNC="
for %%P in (
  "C:\Program Files\uvnc bvba\UltraVNC"
  "C:\Program Files\UltraVNC"
  "C:\Program Files (x86)\uvnc bvba\UltraVNC"
  "C:\Program Files (x86)\UltraVNC"
) do (
  if exist "%%~P\winvnc.exe" if not defined UVNC set "UVNC=%%~P"
)
if not defined UVNC (
  echo [error] UltraVNC installation not found.
  pause
  exit /b 1
)
echo UltraVNC: %UVNC%
set "INI=%ProgramData%\UltraVNC\ultravnc.ini"

:getpw
set "PW="
set /p "PW=Enter VNC password (ASCII, max 8 chars): "
if "%PW%"=="" ( echo Password cannot be empty. & goto getpw )

REM record old passwd
set "OLDPW="
if exist "%INI%" for /f "tokens=2 delims==" %%a in ('findstr /b /i "passwd=" "%INI%" 2^>nul ^| findstr /v /i "passwd2"') do set "OLDPW=%%a"
echo Old passwd=%OLDPW%

REM try CLI helpers, verify after each
set "DONE=0"
if exist "%UVNC%\createpassword.exe" (
  echo Trying createpassword.exe ...
  "%UVNC%\createpassword.exe" "%PW%" >nul 2>nul
  call :checkchanged
)
if "%DONE%"=="0" if exist "%UVNC%\setpasswd.exe" (
  echo Trying setpasswd.exe ...
  "%UVNC%\setpasswd.exe" "%PW%" "%PW%" >nul 2>nul
  call :checkchanged
)
if "%DONE%"=="0" (
  echo.
  echo CLI helpers did not change the password file. Opening UltraVNC settings...
  echo  -> right-click the UltraVNC tray icon, choose Admin Properties,
  echo     set the "VNC Password" to: %PW%
  echo  -> close the settings/tray app, then come back here and press a key.
  echo.
  start "" "%UVNC%\winvnc.exe"
  pause
  call :checkchanged
)
set "PW="
if "%DONE%"=="0" (
  echo [warn] Password still not changed in %INI%.
  echo        Set it manually in UltraVNC Admin Properties as administrator.
  pause
  exit /b 1
)

REM restart the service so it reloads the password
set "SVC=uvnc_service"
sc query %SVC% >nul 2>nul
if errorlevel 1 (
  echo [warn] Service '%SVC%' not found; restart winvnc manually if it runs in app mode.
  goto showini
)
echo Restarting service %SVC% ...
net stop %SVC% >nul 2>nul
net start %SVC%

:showini
echo.
echo --- %INI% ---
if exist "%INI%" type "%INI%"
echo.
echo Done. Use the SAME password in run.bat, then reconnect in the browser.
pause
exit /b

:checkchanged
set "NEWPW="
if exist "%INI%" for /f "tokens=2 delims==" %%a in ('findstr /b /i "passwd=" "%INI%" 2^>nul ^| findstr /v /i "passwd2"') do set "NEWPW=%%a"
if not "%NEWPW%"=="%OLDPW%" (
  echo Password file updated. New passwd=%NEWPW%
  set "DONE=1"
)
goto :eof