122 lines
2.5 KiB
Lua
122 lines
2.5 KiB
Lua
-- Copyright (c) 2018-2025 OARC, Inc.
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-- All rights reserved.
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--
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-- This file is part of dnsjit.
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--
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-- dnsjit is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation, either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- dnsjit is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with dnsjit. If not, see <http://www.gnu.org/licenses/>.
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-- dnsjit.core.object.ip
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-- An IP packet
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--
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-- An IP packet that usually can be found in the object chain
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-- after parsing with, for example, Layer filter.
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-- .SS Attributes
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-- .TP
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-- v
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-- Version.
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-- .TP
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-- hl
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-- Header length.
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-- .TP
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-- tos
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-- Type of service.
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-- .TP
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-- len
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-- Total length.
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-- .TP
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-- id
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-- Identification.
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-- .TP
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-- off
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-- Fragment offset field.
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-- .TP
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-- ttl
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-- Time to live.
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-- .TP
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-- p
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-- Protocol.
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-- .TP
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-- sum
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-- Checksum.
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-- .TP
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-- src
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-- Source address.
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-- .TP
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-- dst
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-- Destination address.
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-- .TP
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-- payload
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-- A pointer to the payload.
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-- .TP
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-- plen
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-- The length of the payload.
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-- .TP
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-- pad_len
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-- The length of padding found, if any.
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module(...,package.seeall)
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require("dnsjit.core.object.ip_h")
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local ffi = require("ffi")
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local C = ffi.C
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local libip = require("dnsjit.lib.ip")
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local t_name = "core_object_ip_t"
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local core_object_ip_t
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local Ip = {}
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-- Return the textual type of the object.
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function Ip:type()
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return "ip"
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end
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-- Return the previous object.
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function Ip:prev()
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return self.obj_prev
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end
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-- Cast the object to the underlining object module and return it.
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function Ip:cast()
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return self
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end
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-- Cast the object to the generic object module and return it.
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function Ip:uncast()
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return ffi.cast("core_object_t*", self)
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end
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-- Make a copy of the object and return it.
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function Ip:copy()
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return C.core_object_ip_copy(self)
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end
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-- Free the object, should only be used on copies or otherwise allocated.
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function Ip:free()
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C.core_object_ip_free(self)
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end
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-- Return the IP source as a string.
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function Ip:source()
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return libip.ipstring(self.src)
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end
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-- Return the IP destination as a string.
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function Ip:destination()
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return libip.ipstring(self.dst)
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end
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core_object_ip_t = ffi.metatype(t_name, { __index = Ip })
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-- dnsjit.core.object (3),
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-- dnsjit.filter.layer (3)
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return Ip
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