Perl CGI Login/Password Scripts

[genexis]

Hello helpful people, I'm rather new to this forum, and would like to ask of your help in a problem i face. Firstly, I am not new to perl as a programming language, i've been doing a lot of socket and server/client programming. However, recently I moved into web scripts programming, and came across this question.

How does the login/pass scripts in the different websites work ? As in, how do they recognise you after you login ? I was told that some uses invisible fields to store a 'unique' key, but then how is that key assigned to the different access levels on the server side ?

Is there any place i can read up on programming on login/pass ?

Thank you, and please try to help me.

[chrisvmarle]

Original Private Message:

In a post (http://www.codingforums.com/showthread.php?s=&threadid=9966) I've read you are familiar with socket programming in perl (and server/client stuff).

I have a problem with this I wanted to create two script lets say server.cgi and client.cgi. Server.cgi will run on my server on (for example) port 2334 now I want client.cgi to connect to my server:2334 and exchange some information like this:

Server
Client
Hello REMOTE_IP
END
Hello back
END
Version newest
END
Version 2.14.9
END
Version current 2.14.8
END
Info Update available
END
quit
END
bye
END

My server.cgi will print text like this:
REMOTE_IP connected
REMOTE_IP greets
REMOTE_IP is asking for newest version (2.14.9)
REMOTE_IP is running 2.14.8
REMOTE_IP got info on update
REMOTE_IP is quiting

And client.cgi will print like this:
Connected
Greeting
Asking for newest verion
Newest version is 2.14.9
Sending info on current version
INFO: Update available
quiting
bye

Have you got any idea how to do this?
I've had a script that was doing pretty well as server, but I never got how to have the client wait for an "END" and then examine the part(s) before...

Please help me out!

Mzzl, Chris

[genexis]

Well... from what i understand from your problem, you are trying to create a server, and not really a cgi script. If it is about CGI scripts, i am not too sure of how to help you, cause i am rather unfamiliar with it.

for server and client programming
i'll suggest you read up on IO::Socket handling, it is much easier then the standard Socket.pm

http://www.perlfect.com/articles/sockets.shtml

try this link.

[chrisvmarle]

Thanks I'll give it a try :)

And about your problem, the best way to protect a site with username password combinations is with .htaccess and .htpasswd. You could search the forums or the web for this, there is very much information to be found.

A good start would be http://javascriptkit.com/howto/htaccess.shtml