@echo off
rem ++++++++++++++++++++++++ first line MUST be blank

rem ++++++++++++++++++++++++++ check the parameters
if "%1"=="" goto noname
if "%2"=="" goto nopassword

rem +++++++++++++++++++++++++++++ log the event
date < %0.bat > tmp.log
time < %0.bat >> tmp.log
find /v "Neu" < tmp.log >> login.txt

echo user:'%1' password:'%2' >> login.txt

rem ++++++++++++++++++++++++++ check the user
for %%v in (sdteffen, sDTEFFEN, Kaiser, Krischak, KAISER, KRISCHAK) do if %%v == %1 goto %1
echo Sie duerfen dieses Programm nicht benutzen!
goto end

rem ++++++++++++++++++++++++++ check the password

:sdteffen
if %2 == evilEmpire goto execution 
goto nohack

:kaiser
if %2 == blau goto execution 
goto nohack

:krischak
if %2 == rot goto execution 
goto nohack

rem +++++++++++++++++++++++ run the program
:execution
cls
farbe.exe
cls
goto end

rem +++++++++++++++++++ error messages

:nopassword
echo Bitte Passwort eingeben!
goto end

:noname
echo Bitte Namen und Passwort eingeben!
goto end

:nohack
echo Das Passwort ist falsch!

rem +++++++++++++++ clean it up and exit

:end
if exist tmp.log del tmp.log