add _gss_oid_name_table

lib/gssapi/mech/gss_oid_to_str.c

@@ -65,3 +65,34 @@ gss_oid_to_str(OM_uint32 *minor_status, gss_OID oid, gss_buffer_t oid_str)
     *minor_status = 0;
     return GSS_S_COMPLETE;
 }
+
+GSSAPI_LIB_FUNCTION const char * GSSAPI_LIB_CALL
+gss_oid_to_name(gss_const_OID oid)
+{
+    size_t i;
+
+    for (i = 0; _gss_ont_mech[i].oid; i++) {
+	if (gss_oid_equal(oid, _gss_ont_mech[i].oid))
+	    return _gss_ont_mech[i].name;
+    }
+    return NULL;
+}
+
+GSSAPI_LIB_FUNCTION gss_OID GSSAPI_LIB_CALL
+gss_name_to_oid(const char *name)
+{
+    size_t i, partial = (size_t)-1;
+
+    for (i = 0; _gss_ont_mech[i].oid; i++) {
+	if (strcasecmp(name, _gss_ont_mech[i].name) == 0)
+	    return _gss_ont_mech[i].oid;
+	if (strncasecmp(name, _gss_ont_mech[i].name, strlen(name)) == 0) {
+	    if (partial != (size_t)-1)
+		return NULL;
+	    partial = i;
+	}
+    }
+    if (partial != (size_t)-1)
+	return _gss_ont_mech[partial].oid;
+    return NULL;
+}