batch file which asks for username/password + registration

Question

I would like a batch file that can register a user into itself. something like:

@echo off
echo Choose an option:
echo     1:Register
echo     2:Login
Set option=
set /p option=Your option: 
if %option%==1 goto reg
if %option%==2 goto login
...
:reg
--The registration script--
goto login
...
:login
Set usr=
set /p usr=Username: 
if %usr%== goto pass
echo False username!
@pause
goto login
...
:pass
Set passw=
set /p passw=Password: 
if %passw%== goto success
echo False password!
@pause
goto login

So... something like that. 'if %passw%== "" and if %usr%== ""' === it should automatticly make that at registration.

It will be nice if more than 1 people could register.

Answer 1

Found some seriously evil tricks on this web site, including:

ECHO Enter some input, and press Enter when ready . . .
ECHO ←[13;0;64;13p
COPY CON USRINPUT.TMP
ECHO ←[13;13p
CLS
ECHO You typed:
TYPE USRINPUT.TMP

Which uses ANSI key translation to change Enter into CTRL-Z.

Answer 2

I couldn't quite say I fully understand your question, but if in doubts about anything related to batch scripting, I could recommend checking out this website this website.

The tutorial is really exhaustive, easy to follow and has helped me a number of times before.

Answer 3

To test for an empty string, put quotes around both sides:

if "%usr%"==""

To append to a text file, use >>

echo %usr%:%pass% >> passwd.txt

To loop over the contents of a file, use for /f:

for /f "delims=: tokens=1,2" %%x in (passwd.txt) do (
  if "%%x"=="%usr%" then (
    set usrfound=true
  )
)
if "%usrfound%"=="" then (
  rem Register user
) else (
  rem Check password and succeed/fail
)

During testing or debugging, make sure echo is on. If you want to set and test a variable inside a for loop or other multiline statement, put this near the start of the file:

setlocal enabledelayedexpansion

and any time you need to read a variable that might have changed inside the block, use !var! instead of %var%.

Answer 4

Hmmm. This is what i found out by some help:

@echo off
title REGISTERANDLOGIN
if exist programbase.dll goto login
if not exist programbase.dll goto register

:register
title Register
echo Register
echo.
echo Please fill in the blanks.
echo.
Set usrname=
set /p usrname=Username: 
Set passw=
set /p passw=Password: 
echo %usrname%>> programdata.dll
echo %passw%>> programbase.dll
goto login

:login
:begin
set usr=
set /p usr=Enter your username: 
if {%usr%}=={} goto :begin
set authenticated=
for /f "tokens=*" %%a in (programdata.dll) do (
    if {%%a}=={%usr%} set authenticated=true
)

if not defined authenticated (echo Invalid Username & goto :begin)

:passwo
set pass=
set /p pass=Enter your password: 
if {%pass%}=={} goto :begin
set authenticated=
for /f "tokens=*" %%a in (programbase.dll) do (
    if {%%a}=={%pass%} set authenticated=true
)
if not defined authenticated (echo Invalid password & goto :begin)

:loggedin
cls
echo Welcome.
@pause
exit /b 0

Answer 5

@echo off

if exist "%userprofile%\documents\Login\Accounts" goto start0

if not exist "%userprofile%\documents\Login\Accounts" md "%userprofile%\documents\Login\Accounts"

 :start0

title Login

color 02

cls

echo ---------------------------------

echo              Login.

echo ---------------------------------

echo.

echo.

echo.

echo 1.Create New Username.

echo 2.Log in.

echo.

echo.

echo.

set /p A=Choice:

IF '%A%' == '1' GOTO NewUser0

IF '%A%' == '2' GOTO Login0

IF NOT '%A%' == '1' GOTO start0

:NewUser0

cls

color 02

cd "%userprofile%\documents\Login\Accounts"

set /p newuser=New Username:

IF EXIST %newuser%.bat GOTO inval0

set /p newpass=New Password:

echo set realusername=%newuser% >> %newuser%.bat

echo set password=%newpass% >> %newuser%.bat

IF EXIST %newuser%.bat GOTO NewUser1

IF NOT EXIST %newuser%.bat GOTO NewUser2

:NewUser1

echo Your Account Has Been Created Successfully. Press An Key To Continue.

pause >nul

GOTO start0

:NewUser2

cls

color 0c

del /f /q %newuser%.bat

echo ERROR!Account Could Not Be Created For Unknown Reasons.Press Any Key To Continue

pause >nul

GOTO start0

:Login0

cls

color 02

cd "%userprofile%\documents\Login\Accounts"

echo Login.

echo.

echo.

echo.

echo.

set /p loguser=Username:

IF NOT EXIST %loguser%.bat GOTO inval1

:Login1

set /p logpass=Password:

call %loguser%.bat

if %logpass% == %password% goto success0

goto invalid2

:inval0

cls

color 0c 

echo Desired Username Already Exists. Press Any Key To Continue.

pause >nul

GOTO start0

:inval1

cls

color 0c 

echo Desired Username Does NOT Exist. Press Any Key To Continue.

pause >nul

GOTO start0

:invalid2

cls

color 0c 

echo Invalid Password. Press Any Key To Continue.

pause >nul

cls

color 02

echo Login.

echo.

echo.

echo.

echo.

echo Username:%loguser%

GOTO Login1

:Success0

cls

color 02

title End Of My Script

echo You Successfully Logged In.

echo Here Is Where You Continue The Script.

ping localhost -n 3 >nul

echo.

echo.

echo.

echo Press Any Key To Exit.

pause >nul 

exit