Add `auth-source-search' integration for LDAP searches.

* net/ldap.el (ldap-search-internal): Add `auth-source-search'
integration for LDAP parameters.  The host, base, user or binddn,
and secret tokens can be specified in a netrc file, for instance.
This is optional because an `auth-source' parameter must be
specified in the search attributes.

2 files changed, 46 insertions, 5 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 1f50ee9ebe6..c74e7cbdb2d 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,11 @@
+2011-03-13  Teodor Zlatanov  <tzz@lifelogs.com>
+
+	* net/ldap.el (ldap-search-internal): Add `auth-source-search'
+	integration for LDAP parameters.  The host, base, user or binddn,
+	and secret tokens can be specified in a netrc file, for instance.
+	This is optional because an `auth-source' parameter must be
+	specified in the search attributes.
+
 2011-03-13  Juanma Barranquero  <lekktu@gmail.com>
 
 	* help.el (describe-mode): Link to the mode's definition (bug#8185).
diff --git a/lisp/net/ldap.el b/lisp/net/ldap.el
index 3ccad277ffb..2caf8dec30f 100644
--- a/lisp/net/ldap.el
+++ b/lisp/net/ldap.el
@@ -36,6 +36,8 @@
 (require 'custom)
 (eval-when-compile (require 'cl))
 
+(autoload 'auth-source-search "auth-source")
+
 (defgroup ldap nil
   "Lightweight Directory Access Protocol."
   :version "21.1"
@@ -480,6 +482,22 @@ Additional search parameters can be specified through
   "Perform a search on a LDAP server.
 SEARCH-PLIST is a property list describing the search request.
 Valid keys in that list are:
+
+  `auth-source', if non-nil, will use `auth-source-search' and
+will grab the :host, :secret, :base, and (:user or :binddn)
+tokens into the `host', `passwd', `base', and `binddn' parameters
+respectively if they are not provided in SEARCH-PLIST.  So for
+instance *each* of these netrc lines has the same effect if you
+ask for the host \"ldapserver:2400\":
+
+  machine ldapserver:2400 login myDN secret myPassword base myBase
+  machine ldapserver:2400 binddn myDN secret myPassword port ldap
+  login myDN secret myPassword base myBase
+
+but if you have more than one in your netrc file, only the first
+matching one will be used.  Note the \"port ldap\" part is NOT
+required.
+
   `host' is a string naming one or more (blank-separated) LDAP servers to
 to try to connect to.  Each host name may optionally be of the form HOST:PORT.
   `filter' is a filter string for the search as described in RFC 1558.
@@ -500,19 +518,34 @@ not their associated values.
 its distinguished name DN.
 The function returns a list of matching entries.  Each entry is itself
 an alist of attribute/value pairs."
-  (let ((buf (get-buffer-create " *ldap-search*"))
+  (let* ((buf (get-buffer-create " *ldap-search*"))
 	(bufval (get-buffer-create " *ldap-value*"))
 	(host (or (plist-get search-plist 'host)
 		  ldap-default-host))
+         ;; find entries with port "ldap" that match the requested host if any
+         (asfound (when (plist-get search-plist 'auth-source)
+                    (nth 0 (auth-source-search :host (or host t)
+                                               :create t))))
+         ;; if no host was requested, get it from the auth-source entry
+         (host (or host (plist-get asfound :host)))
+         ;; get the password from the auth-source
+         (passwd (or (plist-get search-plist 'passwd)
+                     (plist-get asfound :secret)))
+         ;; convert the password from a function call if needed
+         (passwd (if (functionp passwd) (funcall passwd) passwd))
+         ;; get the binddn from the search-list or from the
+         ;; auth-source user or binddn tokens
+         (binddn (or (plist-get search-plist 'binddn)
+                     (plist-get asfound :user)
+                     (plist-get asfound :binddn)))
+         (base (or (plist-get search-plist 'base)
+                   (plist-get asfound :base)
+                   ldap-default-base))
 	(filter (plist-get search-plist 'filter))
 	(attributes (plist-get search-plist 'attributes))
 	(attrsonly (plist-get search-plist 'attrsonly))
-	(base (or (plist-get search-plist 'base)
-		  ldap-default-base))
 	(scope (plist-get search-plist 'scope))
-	(binddn (plist-get search-plist 'binddn))
         (auth (plist-get search-plist 'auth))
-	(passwd (plist-get search-plist 'passwd))
 	(deref (plist-get search-plist 'deref))
 	(timelimit (plist-get search-plist 'timelimit))
 	(sizelimit (plist-get search-plist 'sizelimit))