add features

include/ldap.h

@@ -205,6 +205,13 @@ typedef struct ldapcontrol {
 
 #define LDAP_EXOP_X_WHO_AM_I	"1.3.6.1.4.1.4203.1.11.3"
 
+/* LDAP Features */
+#define LDAP_FEATURE_ALL_OPERATIONAL_ATTRS "1.3.6.1.4.1.4203.1.5.1"  /* + */
+#define LDAP_FEATURE_OBJECTCLASS_ATTRS "1.3.6.1.4.1.4203.1.5.2"
+#define LDAP_FEATURE_ABSOLUTE_FILTERS "1.3.6.1.4.1.4203.1.5.3"  /* (&) (|) */
+#define LDAP_FEATURE_LANGUAGE_TAG_OPTIONS "1.3.6.1.4.1.4203.1.5.4"
+#define LDAP_FEATURE_LANGUAGE_RANGE_OPTIONS "1.3.6.1.4.1.4203.1.5.5"
+
 /*
  * specific LDAP instantiations of BER types we know about
  */