130 lines
3 KiB
Lua
130 lines
3 KiB
Lua
-- Copyright (c) 2018-2023, 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.ip6
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-- An IPv6 packet
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--
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-- An IPv6 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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-- flow
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-- 4 bits version, 8 bits TC and 20 bits flow-ID.
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-- .TP
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-- plen
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-- Payload length (as in the IPv6 header).
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-- .TP
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-- nxt
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-- Next header.
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-- .TP
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-- hlim
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-- Hop limit.
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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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-- is_frag
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-- 1 bit, set if packet is a fragment.
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-- .TP
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-- have_rtdst
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-- 1 bit, set if
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-- .I rtdst
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-- is set.
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-- .TP
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-- frag_offlg
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-- Offset, reserved, and flag taken from the fragment header.
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-- .TP
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-- frag_ident
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-- Identification taken from the fragment header.
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-- .TP
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-- rtdst
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-- Destination address found in the routing extension header.
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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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-- len
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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.ip6_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_ip6_t"
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local core_object_ip6_t
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local Ip6 = {}
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-- Return the textual type of the object.
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function Ip6:type()
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return "ip6"
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end
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-- Return the previous object.
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function Ip6: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 Ip6: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 Ip6: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 Ip6:copy()
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return C.core_object_ip6_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 Ip6:free()
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C.core_object_ip6_free(self)
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end
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-- Return the IPv6 source as a string.
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-- If
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-- .I pretty
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-- is true then return an easier to read IPv6 address.
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function Ip6:source(pretty)
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return libip.ip6string(self.src, pretty)
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end
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-- Return the IPv6 destination as a string.
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-- If
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-- .I pretty
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-- is true then return an easier to read IPv6 address.
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function Ip6:destination(pretty)
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return libip.ip6string(self.dst, pretty)
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end
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core_object_ip6_t = ffi.metatype(t_name, { __index = Ip6 })
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-- dnsjit.core.object (3),
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-- dnsjit.filter.layer (3)
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return Ip6
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