Add new password encodage ('ad') in ldap password drivers (#1489349)

plugins/password/config.inc.php.dist

@@ -201,7 +201,7 @@ $config['password_ldap_search_filter'] = '(uid=%login)';
 
 // LDAP password hash type
 // Standard LDAP encryption type which must be one of: crypt,
-// ext_des, md5crypt, blowfish, md5, sha, smd5, ssha, or clear.
+// ext_des, md5crypt, blowfish, md5, sha, smd5, ssha, ad or clear.
 // Please note that most encodage types require external libraries
 // to be included in your PHP installation, see function hashPassword in drivers/ldap.php for more info.
 // Default: 'crypt'

plugins/password/drivers/ldap.php

@@ -279,6 +279,10 @@ class rcube_ldap_password
             }
             break;
 
+        case 'ad':
+            $cryptedPassword = rcube_charset::convert('"' . $passwordClear . '"', RCUBE_CHARSET, 'UTF-16LE');
+            break;
+
         case 'clear':
         default:
             $cryptedPassword = $passwordClear;

plugins/password/drivers/ldap_simple.php

@@ -247,6 +247,9 @@ class rcube_ldap_simple_password
                 return false;
             }
             break;
+        case 'ad':
+            $crypted_password = rcube_charset::convert('"' . $password_clear . '"', RCUBE_CHARSET, 'UTF-16LE');
+            break;
         case 'clear':
         default:
             $crypted_password = $password_clear;