mirror of
https://github.com/Atmosphere-NX/Atmosphere-libs.git
synced 2025-10-31 03:25:47 +01:00
399 lines
15 KiB
C++
399 lines
15 KiB
C++
/*
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* Copyright (c) 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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namespace ams::scs {
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namespace {
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struct SocketInfo {
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u64 id;
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s32 socket;
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};
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struct ProgramInfo {
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os::ProcessId process_id;
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u64 id;
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s32 socket;
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s32 info_id;
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bool started;
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bool jit_debug;
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bool launched_by_cs;
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};
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constexpr inline auto MaxSocketInfo = 2;
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constexpr inline auto MaxProgramInfo = 64;
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class SocketInfoManager {
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private:
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SocketInfo m_infos[MaxSocketInfo]{};
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int m_count{};
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public:
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constexpr SocketInfoManager() = default;
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void Initialize() {
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/* Clear our count. */
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m_count = 0;
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}
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Result Register(s32 socket, u64 id) {
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/* Check that the socket isn't already registered. */
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for (auto i = 0; i < m_count; ++i) {
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R_UNLESS(m_infos[i].socket != socket, scs::ResultNoSocket());
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}
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/* Check that we can allocate a new socket info. */
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if (m_count >= MaxSocketInfo) {
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/* NOTE: Nintendo aborts with this result here. */
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R_ABORT_UNLESS(scs::ResultOutOfResource());
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}
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/* Create the new socket info. */
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m_infos[m_count++] = {
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.id = id,
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.socket = socket,
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};
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R_SUCCEED();
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}
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void Unregister(s32 socket) {
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/* Unregister the socket, if it's registered. */
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for (auto i = 0; i < m_count; ++i) {
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if (m_infos[i].socket == socket) {
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/* Ensure that the valid socket infos remain in bounds. */
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std::memcpy(m_infos + i, m_infos + i + 1, (m_count - (i + 1)) * sizeof(*m_infos));
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/* Note that we now have one fewer socket info. */
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--m_count;
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break;
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}
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}
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}
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void InvokeHandler(ProcessEventHandler handler, os::ProcessId process_id) {
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/* Invoke the handler on all our sockets. */
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for (auto i = 0; i < m_count; ++i) {
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handler(m_infos[i].id, m_infos[i].socket, process_id);
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}
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}
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};
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class ProgramInfoManager {
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private:
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s32 m_next_info_id{};
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ProgramInfo m_infos[MaxProgramInfo]{};
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int m_count{};
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public:
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constexpr ProgramInfoManager() = default;
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void Initialize() {
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/* Reset our next id. */
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m_next_info_id = 1;
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/* Clear our count. */
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m_count = 0;
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}
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const ProgramInfo *Find(os::ProcessId process_id) const {
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/* Find a matching program. */
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for (auto i = 0; i < m_count; ++i) {
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if (m_infos[i].process_id == process_id) {
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return std::addressof(m_infos[i]);
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}
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}
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return nullptr;
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}
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bool Register(os::ProcessId process_id) {
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/* Allocate an info id. */
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const auto info_id = m_next_info_id++;
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/* Check that we have space for the program. */
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if (m_count >= MaxProgramInfo) {
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return false;
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}
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/* Create the new program info. */
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m_infos[m_count++] = {
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.process_id = process_id,
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.id = 0,
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.socket = 0,
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.info_id = info_id,
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.started = false,
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.jit_debug = false,
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.launched_by_cs = false,
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};
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return true;
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}
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void Unregister(os::ProcessId process_id) {
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/* Unregister the program, if it's registered. */
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for (auto i = 0; i < m_count; ++i) {
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if (m_infos[i].process_id == process_id) {
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/* Ensure that the valid program infos remain in bounds. */
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std::memcpy(m_infos + i, m_infos + i + 1, (m_count - (i + 1)) * sizeof(*m_infos));
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/* Note that we now have one fewer program info. */
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--m_count;
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break;
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}
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}
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}
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void SetStarted(os::ProcessId process_id) {
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/* Start the program. */
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for (auto i = 0; i < m_count; ++i) {
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if (m_infos[i].process_id == process_id) {
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m_infos[i].started = true;
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break;
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}
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}
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}
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void SetJitDebug(os::ProcessId process_id) {
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/* Set the program as jit debug. */
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for (auto i = 0; i < m_count; ++i) {
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if (m_infos[i].process_id == process_id) {
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m_infos[i].jit_debug = true;
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break;
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}
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}
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}
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};
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alignas(os::ThreadStackAlignment) constinit u8 g_thread_stack[os::MemoryPageSize];
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constinit os::ThreadType g_thread = {};
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constinit ProcessEventHandler g_common_start_handler;
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constinit ProcessEventHandler g_common_exit_handler;
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constinit ProcessEventHandler g_common_jit_debug_handler;
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constinit SocketInfoManager g_socket_info_manager;
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constinit ProgramInfoManager g_program_info_manager;
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constinit os::SdkMutex g_manager_mutex;
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void ProcessExitEvent(const pm::ProcessEventInfo &event_info) {
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/* Unregister the target environment definition. */
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htc::tenv::UnregisterDefinitionFilePath(event_info.process_id);
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/* Unregister program info. */
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ProgramInfo program_info;
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bool found = false;
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{
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std::scoped_lock lk(g_manager_mutex);
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if (const ProgramInfo *pi = g_program_info_manager.Find(event_info.process_id); pi != nullptr) {
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program_info = *pi;
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found = true;
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g_program_info_manager.Unregister(event_info.process_id);
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}
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}
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/* If we found the program, handle callbacks. */
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if (found) {
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/* Invoke the common exit handler. */
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if (program_info.launched_by_cs) {
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g_common_exit_handler(program_info.id, program_info.socket, program_info.process_id);
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}
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/* Notify the process event. */
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if (program_info.started) {
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std::scoped_lock lk(g_manager_mutex);
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g_socket_info_manager.InvokeHandler(g_common_exit_handler, program_info.process_id);
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}
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}
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}
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void ProcessStartedEvent(const pm::ProcessEventInfo &event_info) {
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/* Start the program (registering it, if needed). */
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{
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std::scoped_lock lk(g_manager_mutex);
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if (g_program_info_manager.Find(event_info.process_id) == nullptr) {
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AMS_ABORT_UNLESS(g_program_info_manager.Register(event_info.process_id));
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}
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g_program_info_manager.SetStarted(event_info.process_id);
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}
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/* Handle callbacks. */
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{
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std::scoped_lock lk(g_manager_mutex);
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g_socket_info_manager.InvokeHandler(g_common_start_handler, event_info.process_id);
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}
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}
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void ProcessExceptionEvent(const pm::ProcessEventInfo &event_info) {
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/* Find the program info. */
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ProgramInfo program_info;
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bool found = false;
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{
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std::scoped_lock lk(g_manager_mutex);
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if (const ProgramInfo *pi = g_program_info_manager.Find(event_info.process_id); pi != nullptr) {
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program_info = *pi;
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found = true;
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}
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/* Set the program as jit debug. */
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g_program_info_manager.SetJitDebug(event_info.process_id);
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}
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/* If we found the program, handle callbacks. */
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if (found) {
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/* Invoke the common exception handler. */
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if (program_info.launched_by_cs) {
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g_common_jit_debug_handler(program_info.id, program_info.socket, program_info.process_id);
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}
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/* Notify the process event. */
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if (program_info.started) {
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std::scoped_lock lk(g_manager_mutex);
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g_socket_info_manager.InvokeHandler(g_common_jit_debug_handler, program_info.process_id);
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}
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}
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}
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void EventHandlerThread(void *) {
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/* Get event observer. */
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pgl::EventObserver observer;
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R_ABORT_UNLESS(pgl::GetEventObserver(std::addressof(observer)));
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/* Get the observer's event. */
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os::SystemEventType shell_event;
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R_ABORT_UNLESS(observer.GetSystemEvent(std::addressof(shell_event)));
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/* Loop handling events. */
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while (true) {
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/* Wait for an event to come in. */
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os::WaitSystemEvent(std::addressof(shell_event));
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/* Loop processing event infos. */
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while (true) {
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/* Get the next event info. */
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pm::ProcessEventInfo event_info;
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if (R_FAILED(observer.GetProcessEventInfo(std::addressof(event_info)))) {
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break;
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}
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/* Process the event. */
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switch (event_info.GetProcessEvent()) {
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case pm::ProcessEvent::Exited:
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ProcessExitEvent(event_info);
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break;
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case pm::ProcessEvent::Started:
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ProcessStartedEvent(event_info);
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break;
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case pm::ProcessEvent::Exception:
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ProcessExceptionEvent(event_info);
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break;
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default:
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break;
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}
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}
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}
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}
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void StartEventHandlerThread() {
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/* Create the handler thread. */
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R_ABORT_UNLESS(os::CreateThread(std::addressof(g_thread), EventHandlerThread, nullptr, g_thread_stack, sizeof(g_thread_stack), AMS_GET_SYSTEM_THREAD_PRIORITY(scs, ShellEventHandler)));
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/* Set the handler thread's name. */
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os::SetThreadNamePointer(std::addressof(g_thread), AMS_GET_SYSTEM_THREAD_NAME(scs, ShellEventHandler));
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/* Start the handler thread. */
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os::StartThread(std::addressof(g_thread));
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}
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Result PrepareToLaunchProgram(ncm::ProgramId program_id, const void *args, size_t args_size) {
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/* Set the arguments. */
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R_TRY_CATCH(ldr::SetProgramArgument(program_id, args, args_size)) {
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R_CATCH(ldr::ResultArgumentCountOverflow) {
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/* There are too many arguments already registered. Flush the arguments queue. */
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R_TRY(ldr::FlushArguments());
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/* Try again. */
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R_TRY(ldr::SetProgramArgument(program_id, args, args_size));
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}
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} R_END_TRY_CATCH;
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R_SUCCEED();
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}
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void FlushProgramArgument(ncm::ProgramId program_id) {
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/* Ensure there are no arguments for the program. */
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ldr::SetProgramArgument(program_id, "", 1);
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}
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}
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void InitializeShell() {
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/* Initialize our managers. */
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g_socket_info_manager.Initialize();
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g_program_info_manager.Initialize();
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/* Start our event handler. */
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StartEventHandlerThread();
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}
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void RegisterCommonProcessEventHandler(ProcessEventHandler on_start, ProcessEventHandler on_exit, ProcessEventHandler on_jit_debug) {
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g_common_start_handler = on_start;
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g_common_exit_handler = on_exit;
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g_common_jit_debug_handler = on_jit_debug;
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}
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Result RegisterSocket(s32 socket, u64 id) {
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/* Acquire exclusive access to the socket info manager. */
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std::scoped_lock lk(g_manager_mutex);
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/* Register the socket. */
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R_RETURN(g_socket_info_manager.Register(socket, id));
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}
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void UnregisterSocket(s32 socket) {
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/* Acquire exclusive access to the socket info manager. */
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std::scoped_lock lk(g_manager_mutex);
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/* Unregister the socket. */
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return g_socket_info_manager.Unregister(socket);
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}
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Result LaunchProgram(os::ProcessId *out, const ncm::ProgramLocation &loc, const void *args, size_t args_size, u32 process_flags) {
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/* Set up the arguments. */
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PrepareToLaunchProgram(loc.program_id, args, args_size);
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/* Ensure arguments are managed correctly. */
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ON_SCOPE_EXIT { FlushProgramArgument(loc.program_id); };
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/* Launch the program. */
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R_TRY(pgl::LaunchProgram(out, loc, process_flags | pm::LaunchFlags_SignalOnExit, 0));
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R_SUCCEED();
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}
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Result SubscribeProcessEvent(s32 socket, bool is_register, u64 id);
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}
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