working on updating password - it works but is not able to detect if password is not already encrypted

password.pl

@@ -0,0 +1,42 @@
+#/usr/bin/perl
+
+# Script to crypt all password in ldap
+use strict;
+use Net::LDAP;
+
+my $ldapserver = "localhost";
+my $binddn = "cn=manager,o=od";
+my $bindpw = "123Soleil" ;
+
+my $ldap = Net::LDAP->new( $ldapserver ) or die "$@" ;
+
+my $base = 'ou=test,o=od' ;
+
+my $mesg = $ldap->bind( $binddn,
+      password => $bindpw
+      );
+
+$mesg->code  and  die $mesg->error;          # check for errors
+
+$mesg = $ldap->search(
+   base=> $base,
+   filter=>"(&(objectClass=person)(userpassword=*))",
+   attribute=>"userPassword",
+   );
+$mesg->code  and  die $mesg->error;          # check for errors
+if( $mesg-> count() == 0 ) { exit(0) ; }
+
+foreach my $entry ( $mesg-> entries ){
+   my $userPassword = $entry->get_value('userPassword') ;
+   my $sshaPassword = `slappasswd -n -s $userPassword` ;
+   print $userPassword."\t".$sshaPassword."\n" ;
+   if( ($userPassword cmp $sshaPassword)==0 ) {
+      print $entry->dn() . "alteady crypted\n" ;
+      next ; }
+   $entry -> replace (
+      userPassword => $sshaPassword,
+      );
+   $entry-> update($ldap) ;
+   print $entry->dn() . " updated \n" ;
+}
+