begin authenticators

PLAIN:
   driver = plaintext
   server_prompts = :
   server_condition = "${if pam{$auth2:$auth3}{yes}{no}}"
   server_set_id = $auth2

LOGIN:
   driver = plaintext
   server_prompts = "Username:: : Password::"
   server_condition = "${if pam{$auth1:$auth2}{yes}{no}}"
   server_set_id = $auth1