pwdCheckModule not allowed on openldap 2.4.40 (ubuntu server 12.04)

[Guruprasad Kulkarni <gkulkarni@gridcosystems.com>]

Hi,

I installed openldap 2.4.40 on ubuntu 12.04LTS

I enabled ppolicy while configuring the installation.

./configure --enable-hdb --enable-ppolicy --enable-syncprov --with-tls

I want to specify a password check module (to check for minimum upper cases, lower cases, digits, etc). 

I got the module from http://ltb-project.org/wiki/documentation/openldap-ppolicy-check-password

I created a password policy very similar to the one given in the documentation:

dn: cn=default,ou=policies,dc=example,dc=com 

cn: default 

objectClass: pwdPolicy 

objectClass: person 

objectClass: top 

pwdAllowUserChange: TRUE 

pwdAttribute: userPassword 

pwdCheckQuality: 

​1

pwdCheckModule: check_password.so​

pwdExpireWarning: 600

pwdFailureCountInterval: 30 

pwdGraceAuthNLimit:

​0​

 

pwdInHistory: 5

​3​

pwdLockout: TRUE 

pwdLockoutDuration:

​60​

0 

pwdMaxAge: 

​1200​

pwdMaxFailure: 

​3​

pwdMinAge: 0 

pwdMinLength: 

​8​

pwdMustChange: FALSE 

pwdSafeModify: FALSE 

sn: dummy value

​slapd.conf:

modulepath /usr/local/lib

moduleload check_password.so​

​While adding this password policy to ldap, I get the error:

​ldap_add: Object class violation (65)

             attribute info: attribute 'pwdCheckModule' not allowed

The log level is 256 and doesn't say much besides giving the same error.

Let me know where I have gone wrong.

-Guruprasad