diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/object/payload.lua | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/core/object/payload.lua b/src/core/object/payload.lua new file mode 100644 index 0000000..61ea867 --- /dev/null +++ b/src/core/object/payload.lua @@ -0,0 +1,83 @@ +-- Copyright (c) 2018-2021, OARC, Inc. +-- All rights reserved. +-- +-- This file is part of dnsjit. +-- +-- dnsjit is free software: you can redistribute it and/or modify +-- it under the terms of the GNU General Public License as published by +-- the Free Software Foundation, either version 3 of the License, or +-- (at your option) any later version. +-- +-- dnsjit is distributed in the hope that it will be useful, +-- but WITHOUT ANY WARRANTY; without even the implied warranty of +-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +-- GNU General Public License for more details. +-- +-- You should have received a copy of the GNU General Public License +-- along with dnsjit. If not, see <http://www.gnu.org/licenses/>. + +-- dnsjit.core.object.payload +-- Application data payload +-- +-- Payload object contains the data carried by the underlying transport +-- protocol. +-- Payload is usually at the top of the object chain after parsing with, +-- for example, +-- .IR dnsjit.filter.layer . +-- .SS Attributes +-- .TP +-- payload +-- A pointer to the payload. +-- .TP +-- len +-- The length of the payload. +-- .TP +-- padding +-- The length of padding in the underlying packet. +module(...,package.seeall) + +require("dnsjit.core.object.payload_h") +local ffi = require("ffi") +local C = ffi.C + +local t_name = "core_object_payload_t" +local core_object_payload_t +local Payload = {} + +-- Return the textual type of the object. +function Payload:type() + return "payload" +end + +-- Return the previous object. +function Payload:prev() + return self.obj_prev +end + +-- Cast the object to the underlining object module and return it. +function Payload:cast() + return self +end + +-- Cast the object to the generic object module and return it. +function Payload:uncast() + return ffi.cast("core_object_t*", self) +end + +-- Make a copy of the object and return it. +function Payload:copy() + return C.core_object_payload_copy(self) +end + +-- Free the object, should only be used on copies or otherwise allocated. +function Payload:free() + C.core_object_payload_free(self) +end + +core_object_payload_t = ffi.metatype(t_name, { __index = Payload }) + +-- dnsjit.core.object (3), +-- dnsjit.core.object.udp (3), +-- dnsjit.core.object.tcp (3), +-- dnsjit.filter.layer (3) +return Payload |