153 lines
3.9 KiB
C++
153 lines
3.9 KiB
C++
/*
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appliance.h
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Copyright (c) 2021 Kevin Matz (kevin.matz@gmail.com)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "appliance.h"
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#include "dmp.h"
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#include "sdt.h"
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#include "rlp.h"
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#include "rlp-udp.h"
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#include "rlp-tcp.h"
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namespace ACN {
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Appliance::Appliance(UUID::uuid cid)
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: Component(cid)
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{
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registerRlpVectorHandler(SDT::SDT_PROTOCOL_ID,
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std::bind(&Appliance::rootSdtHandler, this,
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std::placeholders::_1));
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registerRlpVectorHandler(DMP::DMP_PROTOCOL_ID,
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std::bind(&Appliance::rootDmpHandler, this,
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std::placeholders::_1));
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};
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/**
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EPI 17
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*/
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void Appliance::UdpStreamHandler(PDU::Stream stream) {
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// verify the UDP preamble
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RLP::UDP::preamble_t preamble(stream);
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// Implementations shall check the ACN Packet Identifier and preamble size.
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if (!preamble)
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stream->setstate(stream->rdstate() | std::ios_base::failbit);
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// implementations shall compute the size and position of the PDU block from
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// the preamble size and postamble size provided. ... ignoring any extra
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// octets in the preamble or postamble.
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for(int i = RLP::UDP::PREAMBLE_MINIMUM_SIZE; i < preamble.length; i++)
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stream->read8();
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if (!stream->good())
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return;
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auto block = PDU::readBlock<RLP::Pdu>(stream);
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if (stream->fail())
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return;
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for(auto root : *block) {
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RlpReceiver(root);
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}
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}
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/**
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EPI 33
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*/
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void Appliance::TcpStreamHandler(PDU::Stream stream) {
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// verify the TCP preamble
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RLP::TCP::preamble_t preamble(stream);
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// implementations shall check the ACN Packet Identifier. If the ACN Packet
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// Identifier is not correct the receiver shall close the connection.
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if (!preamble)
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stream->setstate(stream->rdstate() | std::ios_base::failbit);
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if (!stream->good())
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return;
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auto block = PDU::readBlock<RLP::Pdu>(stream);
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if (stream->fail())
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return;
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for(auto root : *block) {
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RlpReceiver(root);
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}
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}
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/**
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Dispatch a recieved RLP PDU to the appropriate vector handlers.
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*/
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void Appliance::RlpReceiver(std::shared_ptr<RLP::Pdu> root) {
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if (!rlp_vectors_.count(root->vector()))
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return;
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for(auto handler : rlp_vectors_[root->vector()]) {
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handler(root);
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}
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}
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/**
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Add callback handler for a given RLP vector.
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*/
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void Appliance::registerRlpVectorHandler(uint32_t vect,
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PDU::Handler<RLP::Pdu> handle) {
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rlp_vectors_[vect].push_back(handle);
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}
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/**
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Deregister RLP protocol handlers for the given vector.
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*/
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void Appliance::deregisterRlpVector(uint32_t vect) {
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rlp_vectors_.erase(vect);
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}
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/**
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Deregister _ALL_ RLP protocol handlers.
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*/
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void Appliance::deregisterRlpVector() {
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rlp_vectors_.clear();
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}
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/**
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*/
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void Appliance::rootSdtHandler(std::shared_ptr<RLP::Pdu> rlp) {
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}
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/**
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*/
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void Appliance::rootDmpHandler(std::shared_ptr<RLP::Pdu> rlp) {
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}
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}; // ACN
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