Adding a username to simple password script

[PudgiPod]

Hello,

I have a simple password script that works quite well. It asks for a password when logging in and depending on the password, directs the user to a specific page. I would like it to also ask for a username, but I'm not sure how to make it do that since I don't know how to write perl scripts. The script allows multiple passwords and I hope that adding the username would still allow this. Here is the code:

----------

$correctpass = "sample";
  $correcturl = "http://www.mydomain.com/private/";
  $scriptlocation = "http://www.mydomain.com/cgi-bin/password.pl";
  $loginurl = "http://www.mydomain.com/login.html";

# Read in form data
  &parse_form;

  $password =  $input{'password'};
  $function = $input{'function'};


  if ($function eq "login") {
       if ($password eq $correctpass) {
           &goto_url;
       }
       &badpassword;
   }


sub badpassword {
    print "Location: $loginurl\n\n";
}


sub goto_url {

    print "Location: $correcturl\n\n";
}


sub parse_form {

   read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});
   if (length($buffer) < 5) {
         $buffer = $ENV{QUERY_STRING};
    }
   @pairs = split(/&/, $buffer);
   foreach $pair (@pairs) {
      ($name, $value) = split(/=/, $pair);

      $value =~ tr/+/ /;
      $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;

      $input{$name} = $value;
   }
}

----------

If anyone can help I would really appreciate it! Thank you.

-PudgiPod