Emacs-only Configuration ​

Emacs can pass most required configuration options via the ldapsearch command-line. One exception is certificate configuration for LDAP-over-SSL, which must be specified in /etc/openldap/ldap.conf. On systems that provide such certificates as part of the OpenLDAP installation, this can be as simple as one line:

bash
TLS_CACERTDIR /etc/openldap/certs

In .emacs, these expressions suffice to configure EUDC for LDAP:

emacs-lisp
(with-eval-after-load "message"
  (define-key message-mode-map (kbd "TAB") 'eudc-expand-try-all))
(setopt eudc-server-hotlist
        '(("" . bbdb)
          ("ldaps://ldap.gnu.org" . ldap)))
(setopt ldap-host-parameters-alist
        '(("ldaps://ldap.gnu.org"
                  base "ou=people,dc=gnu,dc=org"
                  binddn "gnu\\emacsuser"
                  passwd ldap-password-read)))

Specifying the function ldap-password-read for passwd will cause Emacs to prompt interactively for the password. The password will then be validated and cached, unless password-cache is nil. You can customize password-cache-expiry to control the duration for which the password is cached. If you want to clear the cache, call password-reset.