#! /usr/bin/perl

our $username;
our $name;
our $passwd;
our $password;
our $rot;

print ":::this is passwd stickum:::\n";
print "to recover and hide passwords\n";
print "---press any key to begin---\n";

if (<STDIN>){&user};

sub user{
    print "Account name:\n";
    while (<>){
           $username=$_;
           chomp $username;
           &query;
           }

sub query{
         print "Restore saved?\n";
         while (<>){
         my $mode=$_;
         if ($mode=~/yes|y/){
         &recordsread;
         }
         elsif($mode=~/no|n/){
         &recordswrite;
         }
      }
}

sub recordsread{
                open(PASSWD, "+</.stickum.txt");
                LINE:while (<PASSWD>){
                    $/="\n";
                    ($name, $passwrd)=split (/:/);
                     next LINE if($name ne $username);
                     feistal($passwrd);
                     }
                 print "The plaintext is:$rot\n";
                 close PASSWD;
}

sub recordswrite{
               print "What is the new password?\n";
               $passwd=<STDIN>;
                feistal($password);
                open (PASSWD "+</.stickum.txt");
                EXISITS: while (<PASSWD>){
                $\="/n";
                $line=$_;
                next EXISTS unless $line=undef;
               }
               print PASSWD "$username:$rot";
               close PASSWD;
               print "Recorded, go ahead and forget\n";
}

sub feistal{
          $rot=shift@_;
          $rot=~tr/A-Ma-mN-Zn-z/N-Zn-zA-Ma-m/;
          return $rot;
}