code: def init(plugin_manager, _, _2, conf):
      
  
      encryption = conf.get("encryption", "none")
      if encryption not in ["none", "ssl", "tls"]:
          raise Exception("Unknown encryption method {}".format(encryption))
      if encryption == "none":
          conf["encryption"] = None
  
      if conf.get("port", 0) == 0:
          conf["port"] = None
  
      the_method = LdapAuthMethod(conf.get("id"), conf.get('name', 'LDAP'), conf.get("imlink", ""), conf)
      plugin_manager.add_page(r'/auth/page/([^/]+)', LDAPAuthenticationPage)
      plugin_manager.register_auth_method(the_method)
docs: Allow to connect through a LDAP service
  
          Available configuration:
          ::
  
              plugins:
                  - plugin_module": "inginious.frontend.plugins.auth.ldap_auth",
  
                    host: "ldap.test.be",
                    port: 0,
                    encryption: "ssl",
                    base_dn: "o=test,c=be",
                    request: "(uid={})",
                    name: "LDAP Login"
  
          *host*
              The host of the ldap server
          *encryption*
              Encryption method used to connect to the LDAP server
              Can be either "none", "ssl" or "tls"
          *request*
              Request made to the server in order to find the dn of the user. The characters "{}" will be replaced by the login name.