mirror of
https://github.com/Atmosphere-NX/Atmosphere
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116 lines
4.1 KiB
C++
116 lines
4.1 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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 this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stratosphere.hpp>
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#include "htclow_mux.hpp"
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#include "../ctrl/htclow_ctrl_state_machine.hpp"
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namespace ams::htclow::mux {
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Mux::Mux(PacketFactory *pf, ctrl::HtcctrlStateMachine *sm)
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: m_packet_factory(pf), m_state_machine(sm), m_task_manager(), m_event(os::EventClearMode_ManualClear),
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m_channel_impl_map(pf, sm, std::addressof(m_task_manager), std::addressof(m_event)), m_global_send_buffer(pf),
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m_mutex(), m_is_sleeping(false), m_version(ProtocolVersion)
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{
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/* ... */
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}
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void Mux::SetVersion(u16 version) {
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/* Set our version. */
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m_version = version;
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/* Set all entries in our map. */
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/* NOTE: Nintendo does this highly inefficiently... */
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for (auto &pair : m_channel_impl_map.GetMap()) {
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m_channel_impl_map[pair.first].SetVersion(m_version);
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}
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}
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Result Mux::CheckReceivedHeader(const PacketHeader &header) const {
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/* Check the packet signature. */
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AMS_ASSERT(header.signature == HtcGen2Signature);
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/* Switch on the packet type. */
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switch (header.packet_type) {
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case PacketType_Data:
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R_UNLESS(header.version == m_version, htclow::ResultProtocolError());
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R_UNLESS(header.body_size <= sizeof(PacketBody), htclow::ResultProtocolError());
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break;
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case PacketType_MaxData:
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R_UNLESS(header.version == m_version, htclow::ResultProtocolError());
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R_UNLESS(header.body_size == 0, htclow::ResultProtocolError());
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break;
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case PacketType_Error:
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R_UNLESS(header.body_size == 0, htclow::ResultProtocolError());
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break;
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AMS_UNREACHABLE_DEFAULT_CASE();
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}
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return ResultSuccess();
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}
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Result Mux::ProcessReceivePacket(const PacketHeader &header, const void *body, size_t body_size) {
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/* Lock ourselves. */
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std::scoped_lock lk(m_mutex);
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/* Process for the channel. */
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if (m_channel_impl_map.Exists(header.channel)) {
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R_TRY(this->CheckChannelExist(header.channel));
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return m_channel_impl_map[header.channel].ProcessReceivePacket(header, body, body_size);
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} else {
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if (header.packet_type == PacketType_Data || header.packet_type == PacketType_MaxData) {
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this->SendErrorPacket(header.channel);
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}
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return htclow::ResultChannelNotExist();
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}
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}
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void Mux::UpdateChannelState() {
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/* Lock ourselves. */
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std::scoped_lock lk(m_mutex);
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/* Update the state of all channels in our map. */
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/* NOTE: Nintendo does this highly inefficiently... */
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for (auto pair : m_channel_impl_map.GetMap()) {
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m_channel_impl_map[pair.first].UpdateState();
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}
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}
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void Mux::UpdateMuxState() {
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/* Lock ourselves. */
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std::scoped_lock lk(m_mutex);
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/* Update whether we're sleeping. */
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if (m_state_machine->IsSleeping()) {
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m_is_sleeping = true;
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} else {
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m_is_sleeping = false;
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m_event.Signal();
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}
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}
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Result Mux::CheckChannelExist(impl::ChannelInternalType channel) {
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R_UNLESS(m_channel_impl_map.Exists(channel), htclow::ResultChannelNotExist());
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return ResultSuccess();
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}
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Result Mux::SendErrorPacket(impl::ChannelInternalType channel) {
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/* TODO */
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AMS_ABORT("Mux::SendErrorPacket");
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}
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}
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