mirror of
https://github.com/Atmosphere-NX/Atmosphere
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133 lines
5 KiB
C++
133 lines
5 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_socket_discovery_util.hpp"
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#include "../ctrl/htclow_ctrl_settings_holder.hpp"
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namespace ams::htclow::driver {
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namespace {
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constexpr inline u32 AutoConnectIpv4RequestServiceId = 0x834C775A;
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constexpr inline u32 BeaconResponseServiceId = 0xA6F7FA96;
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constexpr const char MakeAutoConnectIpv4RequestPacketFormat[] =
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"{\r\n"
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" \"Address\" : \"%u.%u.%u.%u\",\r\n"
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" \"Port\" : %u,\r\n"
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" \"HW\" : \"%s\",\r\n"
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" \"SN\" : \"%s\"\r\n"
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"}\r\n";
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constexpr const char BeaconResponsePacketFormat[] =
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"{\r\n"
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" \"Gen\" : 2,\r\n"
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" \"Spec \": \"%s\",\r\n"
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" \"MAC\" : \"00:00:00:00:00:00\",\r\n"
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" \"Conn\" : \"TCP\",\r\n"
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" \"HW\" : \"%s\",\r\n"
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" \"Name\" : \"%s\",\r\n"
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" \"SN\" : \"%s\",\r\n"
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" \"FW\" : \"%s\"\r\n"
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"}\r\n";
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constinit os::SdkMutex g_settings_holder_mutex;
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constinit bool g_settings_holder_initialized = false;
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constinit htclow::ctrl::SettingsHolder g_settings_holder;
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void InitializeSettingsHolder() {
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std::scoped_lock lk(g_settings_holder_mutex);
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if (!g_settings_holder_initialized) {
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g_settings_holder.LoadSettings();
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g_settings_holder_initialized = true;
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}
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}
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}
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s32 MakeAutoConnectIpv4RequestPacket(char *dst, size_t dst_size, const socket::SockAddrIn &sockaddr) {
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/* Initialize the settings holder. */
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InitializeSettingsHolder();
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/* Create the packet header. */
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TmipcHeader header = {
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.service_id = AutoConnectIpv4RequestServiceId,
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.version = TmipcVersion,
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};
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/* Create the packet body. */
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std::scoped_lock lk(g_settings_holder_mutex);
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const auto addr = sockaddr.sin_addr.s_addr;
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char packet_body[0x100];
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const auto ideal_len = util::SNPrintf(packet_body, sizeof(packet_body), MakeAutoConnectIpv4RequestPacketFormat,
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(addr >> 0) & 0xFF, (addr >> 8) & 0xFF, (addr >> 16) & 0xFF, (addr >> 24) & 0xFF,
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socket::InetNtohs(sockaddr.sin_port),
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g_settings_holder.GetHardwareType(),
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"" /* Nintendo passes empty string as serial number here. */
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);
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/* Determine actual usable body length. */
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header.data_len = std::max<u32>(ideal_len, sizeof(packet_body));
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/* Check that the packet will fit. */
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AMS_ABORT_UNLESS(sizeof(header) + header.data_len <= dst_size);
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/* Copy the formatted header. */
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std::memcpy(dst, std::addressof(header), sizeof(header));
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std::memcpy(dst + sizeof(header), packet_body, header.data_len);
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return header.data_len;
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}
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s32 MakeBeaconResponsePacket(char *dst, size_t dst_size) {
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/* Initialize the settings holder. */
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InitializeSettingsHolder();
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/* Create the packet header. */
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TmipcHeader header = {
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.service_id = BeaconResponseServiceId,
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.version = TmipcVersion,
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};
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/* Create the packet body. */
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std::scoped_lock lk(g_settings_holder_mutex);
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char packet_body[0x100];
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const auto ideal_len = util::SNPrintf(packet_body, sizeof(packet_body), BeaconResponsePacketFormat,
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g_settings_holder.GetSpec(),
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g_settings_holder.GetHardwareType(),
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g_settings_holder.GetTargetName(),
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g_settings_holder.GetSerialNumber(),
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g_settings_holder.GetFirmwareVersion()
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);
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/* Determine actual usable body length. */
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header.data_len = std::max<u32>(ideal_len, sizeof(packet_body));
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/* Check that the packet will fit. */
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AMS_ABORT_UNLESS(sizeof(header) + header.data_len <= dst_size);
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/* Copy the formatted header. */
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std::memcpy(dst, std::addressof(header), sizeof(header));
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std::memcpy(dst + sizeof(header), packet_body, header.data_len);
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return header.data_len;
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}
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}
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