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-- 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.icmp
-- An ICMP packet
--
-- An ICMP packet which is usually at the top of the object chain
-- after parsing with, for example, Layer filter.
-- .SS Attributes
-- .TP
-- type
-- The type of ICMP message.
-- .TP
-- code
-- The (response/error) code for the ICMP type message.
-- .TP
-- cksum
-- The ICMP checksum.
module(...,package.seeall)
require("dnsjit.core.object.icmp_h")
local ffi = require("ffi")
local C = ffi.C
local t_name = "core_object_icmp_t"
local core_object_icmp_t
local Icmp = {}
-- Return the textual type of the object.
function Icmp:type()
return "icmp"
end
-- Return the previous object.
function Icmp:prev()
return self.obj_prev
end
-- Cast the object to the underlining object module and return it.
function Icmp:cast()
return self
end
-- Cast the object to the generic object module and return it.
function Icmp:uncast()
return ffi.cast("core_object_t*", self)
end
-- Make a copy of the object and return it.
function Icmp:copy()
return C.core_object_icmp_copy(self)
end
-- Free the object, should only be used on copies or otherwise allocated.
function Icmp:free()
C.core_object_icmp_free(self)
end
core_object_icmp_t = ffi.metatype(t_name, { __index = Icmp })
-- dnsjit.core.object (3),
-- dnsjit.filter.layer (3)
return Icmp
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