A Repsys plugin for obtaining users from a LDAP server.

In order to enable the plugin, the user must define the following 
options in the [global] section of mgarepo.conf:

    ldap-uri [required if ldap-server is unset]
        the URI of the server, you can refer to more than one server by
        adding more URIs separated by spaces::

          ldap-uri = ldap://ldap.network/ ldaps://backup.network:22389/

    ldap-server [required if ldap-uri is unset]
        the host name of the LDAP server
    ldap-port [optional] [default: 389]
        the port of the LDAP server
    ldap-base [required]
        the base DN where the search will be performed
    ldap-binddn [optional] [default: empty]
        the DN used to bind
    ldap-bindpw [optional] [default: empty]
        the password used to bind
    ldap-starttls [optional] [default: no]
         use "yes" or "no" to enable or disable the use of the STARTTLS
         LDAP extension
    ldap-filterformat [optional] 
            [default: (&(objectClass=inetOrgPerson)(uid=$username))]
        RFC-2254 filter string used in the search of the user entry.
        Note that this is a python template string and will have the 
        user name as parameter. For example:

           ldap-filterformat = (&(objectClass=inetOrgPerson)(uid=$username))

        Will result in the search filter:

           (&(objectClass=inetOrgPerson)(uid=john))

    ldap-resultformat [optional] [default: $cn <$mail>]
        This is a python template string. This string will be 
        formatted using one dict object containing the fields
        returned in the LDAP search, for example:

          >>> format = Template("$cn <$mail>")
          >>> d = search(basedn, filter)
          >>> d
          {"cn": "John Doe", "mail": "john@example.org", 
           "uidNumber": "1290", "loginShell": "/bin/bash", 
            ... many other attributes ... }
          >>> value = format.substitute(d)
          >>> print value
          John Doe <john@example.org>

        Note that only the first value of the attributes will be 
        used.

When the searched option is not found, it will try in mgarepo.conf. All
the values found.  (including from mgarepo.conf) will be cached between
each configuration access.

This plugin requires the package python-ldap.

For more information, look http://qa.mandriva.com/show_bug.cgi?id=30549
