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@rubenwardy

rubenwardy/login.bat

Created Apr 24, 2014
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What would you like to do?
Batch login system, for fun
REM To set up, create a text file called users.txt
REM in the same directory as this batch file
REM with this content (without the REM)
REM 1,user1,password,staff
REM 2,user2,password,pupil
@ECHO OFF
SETLOCAL EnableDelayedExpansion
GOTO main
:extract_user
ECHO Finding %2 in %1
ECHO Output: %3
DEL %3
FOR /f %%G IN (%1) DO (
SET "var=%%G"
SET "uid=!var:~0,1!"
ECHO !uid!
if "!uid!"=="%2" (
ECHO %%G>>"%3"
)
)
GOTO :EOF
:user_parse
SET data=
FOR /f %%G IN (%1) DO (
SET "data=!data!%%G"
)
SET user_name=
SET user_pass=
SET stage=1
SET "data=!data:~1%!"
SET "data=!data:~1%!"
:username_loop
SET "char=!data:~0,1!"
SET "data=!data:~1%!"
IF "%char%"=="," (
GOTO password_loop
) ELSE (
SET "user_name=!user_name!%char%"
)
GOTO username_loop
:password_loop
SET "char=!data:~0,1!"
SET "data=!data:~1%!"
IF "%char%"=="," (
GOTO rank_loop
) ELSE (
SET "user_pass=!user_pass!%char%"
)
GOTO password_loop
:rank_loop
GOTO :EOF
:main
SET /p inp_user="Enter your username: " %=%
SET /p inp_pass="Enter your password: " %=%
FOR /f %%G IN (users.txt) DO (
DEL tmp.txt
ECHO %%G>>"tmp.txt"
CALL :user_parse tmp.txt
IF "!user_name!" == "%inp_user%" (
if "!user_pass!" == "%inp_pass%" (
ECHO Logging in...
GOTO loggedin
) else (
GOTO accd
)
)
)
:accd
ECHO Access denied
GOTO end
:loggedin
ECHO You are logged in!
PAUSE
:end
ECHO Program Ended
PAUSE
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