-- 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 . -- dnsjit.output.tlscli -- Simple TLS client -- local output = require("dnsjit.output.tlscli").new("127.0.0.1", "853") -- -- Simple TLS client that attempts to do a TLS handshake (without -- certificate verification). It behaves the same way as tcpcli, except all -- the data is sent over the encrypted channel. -- .SS Attributes -- .TP -- timeout -- A -- .I core.timespec -- that is used when producing objects. module(...,package.seeall) require("dnsjit.output.tlscli_h") local ffi = require("ffi") local C = ffi.C local t_name = "output_tlscli_t" local output_tlscli_t = ffi.typeof(t_name) local Tlscli = {} -- Create a new Tlscli output. function Tlscli.new() local self = { obj = output_tlscli_t(), } C.output_tlscli_init(self.obj) ffi.gc(self.obj, C.output_tlscli_destroy) return setmetatable(self, { __index = Tlscli }) end -- Set the timeout when producing objects. function Tlscli:timeout(seconds, nanoseconds) self.obj.timeout.sec = seconds self.obj.timeout.nsec = nanoseconds end -- Connect to the -- .I host -- and -- .I port -- , perform a TLS handshake and return 0 if successful. function Tlscli:connect(host, port) return C.output_tlscli_connect(self.obj, host, port) end -- Return the C functions and context for receiving objects, these objects -- will be sent. function Tlscli:receive() return C.output_tlscli_receiver(self.obj), self.obj end -- Return the C functions and context for producing objects, these objects -- are received. -- The producer will wait for data and if timed out (see -- .IR timeout ) -- it will return a payload object with length zero. -- If a timeout happens during during the first stage, getting the length, it -- will fail and return nil. -- Additional calls will continue retrieving the payload. -- The producer returns nil on error. function Tlscli:produce() return C.output_tlscli_producer(self.obj), self.obj end -- Return the number of "packets" sent, actually the number of completely sent -- payloads. function Tlscli:packets() return tonumber(self.obj.pkts) end -- Return the number of "packets" received, actually the number of completely -- received DNS messages. function Tlscli:received() return tonumber(self.obj.pkts_recv) end -- Return the number of errors when sending. function Tlscli:errors() return tonumber(self.obj.errs) end return Tlscli