#!/usr/bin/perl

#Grab Input From Command Line
use strict;
use Getopt::Long;
my ($username, $domain, $password, $email, $ip, $service);
my $result = GetOptions("username=s" => \$username,
                        "domain=s" => \$domain,
                        "email=s" => \$email,
                        "ip=s" => \$ip,
                        "service=s" => \$service);

#Generate Random Password And Encrypt It
my @chars = ('a'..'z', 'A'..'Z', 0..9);
my $plaintext_pass = do {{
  local $_ = join "" => map {$chars [rand @chars]} 1..8;
  redo unless /[a-z]/ && /[A-Z]/ && /\d/;
  $_;
}};
my $salt = join '', 
   ('.', '/', 0..9, 
   'A'..'Z', 'a'..'z')[rand 64, rand 64];
my $encrypted_pass = crypt($plaintext_pass, $salt);

#Take Current System Date And Add Two Weeks On For Trial
use constant WEEK => 60 * 60 * 24 * 7 ;
my @later = localtime( time + ( WEEK * 2 ) ) ;
my $expiry_date = sprintf "%04d-%02d-%02d",
                 $later[5] + 1900,
                 $later[4] + 1,
                 $later[3] ;

#Add User
if (!system("adduser $username -g 100 -s /bin/false -d /home/$username -p $encrypted_pass -e $expiry_date")) {

  #Edit Postfix Virtual File
  my $datafile = '/etc/postfix/virtual' ;
  my $req_addr = "$username\@$domain" ;
  my ( $name, $domain ) = $req_addr =~ /^([\w.-]+)(@[\w.-]+)$/ ;
  open FH, $datafile or die "Couldn't read $datafile: $!" ;
  my @virtual = <FH> ;
  close FH ;
  open FH, ">$datafile" or die "Couldn't write $datafile: $!" ;
  my $wrote_it = 0 ;
  for ( @virtual )
  {
    print FH $_ ;
    if ( $_ =~ /$domain/ && !$wrote_it )
    {
            print FH "$req_addr\t$username\n" ;
      $wrote_it++ ;
    }
  }
  close FH ;
  system ("postmap /etc/postfix/virtual");
  #Send Emails
  open (MAIL, "|/usr/sbin/sendmail -t");
  print MAIL "To: bar\@foo.com\n";
  print MAIL "Reply-to: $email\n";
  print MAIL "From: $email\n";
  print MAIL "Subject: AP3k New User Signup\n";
  print MAIL "\n\n";
  print MAIL "Test Mail1\n";
  print MAIL "\n\n";
  close (MAIL);

  open (MAIL, "|/usr/sbin/sendmail -t");
  print MAIL "To: $email\n";
  print MAIL "Reply-to: bar\@foo.com\n";
  print MAIL "From: foo\@bar.com\n";
  print MAIL "Subject: Test\n";
  print MAIL "\n\n";
  print MAIL "Test Mail2\n";
  close (MAIL);
  print "Account Created Successfully\n";
  exit 0;
} else {
  print "Account Error\n";
  exit 122;
}