mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-27 07:01:32 +00:00
472 lines
18 KiB
C++
472 lines
18 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
#include "htc_rpc_client.hpp"
|
|
|
|
namespace ams::htc::server::rpc {
|
|
|
|
namespace {
|
|
|
|
constexpr inline size_t ThreadStackSize = os::MemoryPageSize;
|
|
|
|
alignas(os::ThreadStackAlignment) constinit u8 g_receive_thread_stack[ThreadStackSize];
|
|
alignas(os::ThreadStackAlignment) constinit u8 g_send_thread_stack[ThreadStackSize];
|
|
|
|
constinit os::SdkMutex g_rpc_mutex;
|
|
|
|
constinit RpcTaskIdFreeList g_task_id_free_list;
|
|
constinit RpcTaskTable g_task_table;
|
|
|
|
}
|
|
|
|
RpcClient::RpcClient(driver::IDriver *driver, htclow::ChannelId channel)
|
|
: m_allocator(nullptr),
|
|
m_driver(driver),
|
|
m_channel_id(channel),
|
|
m_receive_thread_stack(g_receive_thread_stack),
|
|
m_send_thread_stack(g_send_thread_stack),
|
|
m_mutex(g_rpc_mutex),
|
|
m_task_id_free_list(g_task_id_free_list),
|
|
m_task_table(g_task_table),
|
|
m_task_active(),
|
|
m_is_htcs_task(),
|
|
m_task_queue(),
|
|
m_cancelled(false),
|
|
m_thread_running(false)
|
|
{
|
|
/* Initialize all events. */
|
|
for (size_t i = 0; i < MaxRpcCount; ++i) {
|
|
os::InitializeEvent(std::addressof(m_receive_buffer_available_events[i]), false, os::EventClearMode_AutoClear);
|
|
os::InitializeEvent(std::addressof(m_send_buffer_available_events[i]), false, os::EventClearMode_AutoClear);
|
|
}
|
|
}
|
|
|
|
RpcClient::RpcClient(mem::StandardAllocator *allocator, driver::IDriver *driver, htclow::ChannelId channel)
|
|
: m_allocator(allocator),
|
|
m_driver(driver),
|
|
m_channel_id(channel),
|
|
m_receive_thread_stack(m_allocator->Allocate(ThreadStackSize, os::ThreadStackAlignment)),
|
|
m_send_thread_stack(m_allocator->Allocate(ThreadStackSize, os::ThreadStackAlignment)),
|
|
m_mutex(g_rpc_mutex),
|
|
m_task_id_free_list(g_task_id_free_list),
|
|
m_task_table(g_task_table),
|
|
m_task_active(),
|
|
m_is_htcs_task(),
|
|
m_task_queue(),
|
|
m_cancelled(false),
|
|
m_thread_running(false)
|
|
{
|
|
/* Initialize all events. */
|
|
for (size_t i = 0; i < MaxRpcCount; ++i) {
|
|
os::InitializeEvent(std::addressof(m_receive_buffer_available_events[i]), false, os::EventClearMode_AutoClear);
|
|
os::InitializeEvent(std::addressof(m_send_buffer_available_events[i]), false, os::EventClearMode_AutoClear);
|
|
}
|
|
}
|
|
|
|
RpcClient::~RpcClient() {
|
|
/* Finalize all events. */
|
|
for (size_t i = 0; i < MaxRpcCount; ++i) {
|
|
os::FinalizeEvent(std::addressof(m_receive_buffer_available_events[i]));
|
|
os::FinalizeEvent(std::addressof(m_send_buffer_available_events[i]));
|
|
}
|
|
|
|
/* Free the thread stacks. */
|
|
if (m_allocator != nullptr) {
|
|
m_allocator->Free(m_receive_thread_stack);
|
|
m_allocator->Free(m_send_thread_stack);
|
|
}
|
|
m_receive_thread_stack = nullptr;
|
|
m_send_thread_stack = nullptr;
|
|
|
|
/* Free all tasks. */
|
|
for (u32 i = 0; i < MaxRpcCount; ++i) {
|
|
if (m_task_active[i]) {
|
|
std::scoped_lock lk(m_mutex);
|
|
|
|
m_task_table.Delete(i);
|
|
m_task_id_free_list.Free(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
void RpcClient::Open() {
|
|
R_ABORT_UNLESS(m_driver->Open(m_channel_id));
|
|
}
|
|
|
|
void RpcClient::Close() {
|
|
m_driver->Close(m_channel_id);
|
|
}
|
|
|
|
Result RpcClient::Start() {
|
|
/* Connect. */
|
|
R_TRY(m_driver->Connect(m_channel_id));
|
|
|
|
/* Initialize our task queue. */
|
|
m_task_queue.Initialize();
|
|
|
|
/* Create our threads. */
|
|
R_ABORT_UNLESS(os::CreateThread(std::addressof(m_receive_thread), ReceiveThreadEntry, this, m_receive_thread_stack, ThreadStackSize, AMS_GET_SYSTEM_THREAD_PRIORITY(htc, HtcmiscReceive)));
|
|
R_ABORT_UNLESS(os::CreateThread(std::addressof(m_send_thread), SendThreadEntry, this, m_send_thread_stack, ThreadStackSize, AMS_GET_SYSTEM_THREAD_PRIORITY(htc, HtcmiscSend)));
|
|
|
|
/* Set thread name pointers. */
|
|
os::SetThreadNamePointer(std::addressof(m_receive_thread), AMS_GET_SYSTEM_THREAD_NAME(htc, HtcmiscReceive));
|
|
os::SetThreadNamePointer(std::addressof(m_send_thread), AMS_GET_SYSTEM_THREAD_NAME(htc, HtcmiscSend));
|
|
|
|
/* Start threads. */
|
|
os::StartThread(std::addressof(m_receive_thread));
|
|
os::StartThread(std::addressof(m_send_thread));
|
|
|
|
/* Set initial state. */
|
|
m_cancelled = false;
|
|
m_thread_running = true;
|
|
|
|
/* Clear events. */
|
|
for (size_t i = 0; i < MaxRpcCount; ++i) {
|
|
os::ClearEvent(std::addressof(m_receive_buffer_available_events[i]));
|
|
os::ClearEvent(std::addressof(m_send_buffer_available_events[i]));
|
|
}
|
|
|
|
R_SUCCEED();
|
|
}
|
|
|
|
void RpcClient::Cancel() {
|
|
/* Set cancelled. */
|
|
m_cancelled = true;
|
|
|
|
/* Signal all events. */
|
|
for (size_t i = 0; i < MaxRpcCount; ++i) {
|
|
os::SignalEvent(std::addressof(m_receive_buffer_available_events[i]));
|
|
os::SignalEvent(std::addressof(m_send_buffer_available_events[i]));
|
|
}
|
|
|
|
/* Cancel our queue. */
|
|
m_task_queue.Cancel();
|
|
}
|
|
|
|
void RpcClient::Wait() {
|
|
/* Wait for thread to not be running. */
|
|
if (m_thread_running) {
|
|
os::WaitThread(std::addressof(m_receive_thread));
|
|
os::WaitThread(std::addressof(m_send_thread));
|
|
os::DestroyThread(std::addressof(m_receive_thread));
|
|
os::DestroyThread(std::addressof(m_send_thread));
|
|
}
|
|
m_thread_running = false;
|
|
|
|
/* Lock ourselves. */
|
|
std::scoped_lock lk(m_mutex);
|
|
|
|
/* Finalize the task queue. */
|
|
m_task_queue.Finalize();
|
|
|
|
/* Cancel all tasks. */
|
|
for (size_t i = 0; i < MaxRpcCount; ++i) {
|
|
if (m_task_active[i]) {
|
|
m_task_table.Get<Task>(i)->Cancel(RpcTaskCancelReason::ClientFinalized);
|
|
}
|
|
}
|
|
}
|
|
|
|
int RpcClient::WaitAny(htclow::ChannelState state, os::EventType *event) {
|
|
/* Check if we're already signaled. */
|
|
if (os::TryWaitEvent(event)) {
|
|
return 1;
|
|
}
|
|
|
|
/* Wait. */
|
|
while (m_driver->GetChannelState(m_channel_id) != state) {
|
|
const auto idx = os::WaitAny(m_driver->GetChannelStateEvent(m_channel_id), event);
|
|
if (idx != 0) {
|
|
return idx;
|
|
}
|
|
|
|
/* Clear the channel state event. */
|
|
os::ClearEvent(m_driver->GetChannelStateEvent(m_channel_id));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
Result RpcClient::ReceiveThread() {
|
|
/* Loop forever. */
|
|
auto *header = reinterpret_cast<RpcPacket *>(m_receive_buffer);
|
|
while (true) {
|
|
/* Try to receive a packet header. */
|
|
R_TRY(this->ReceiveHeader(header));
|
|
|
|
/* Track how much we've received. */
|
|
size_t received = sizeof(*header);
|
|
|
|
/* If the packet has one, receive its body. */
|
|
if (header->body_size > 0) {
|
|
/* Sanity check the task id. */
|
|
AMS_ABORT_UNLESS(header->task_id < static_cast<int>(MaxRpcCount));
|
|
|
|
/* Sanity check the body size. */
|
|
AMS_ABORT_UNLESS(util::IsIntValueRepresentable<size_t>(header->body_size));
|
|
AMS_ABORT_UNLESS(static_cast<size_t>(header->body_size) <= sizeof(m_receive_buffer) - received);
|
|
|
|
/* Receive the body. */
|
|
R_TRY(this->ReceiveBody(header->data, header->body_size));
|
|
|
|
/* Note that we received the body. */
|
|
received += header->body_size;
|
|
}
|
|
|
|
/* Acquire exclusive access to the task tables. */
|
|
std::scoped_lock lk(m_mutex);
|
|
|
|
/* Get the specified task. */
|
|
Task *task = m_task_table.Get<Task>(header->task_id);
|
|
R_UNLESS(task != nullptr, htc::ResultInvalidTaskId());
|
|
|
|
/* If the task is canceled, free it. */
|
|
if (task->GetTaskState() == RpcTaskState::Cancelled) {
|
|
m_task_active[header->task_id] = false;
|
|
m_is_htcs_task[header->task_id] = false;
|
|
m_task_table.Delete(header->task_id);
|
|
m_task_id_free_list.Free(header->task_id);
|
|
continue;
|
|
}
|
|
|
|
/* Handle the packet. */
|
|
switch (header->category) {
|
|
case PacketCategory::Response:
|
|
R_TRY(task->ProcessResponse(m_receive_buffer, received));
|
|
break;
|
|
case PacketCategory::Notification:
|
|
R_TRY(task->ProcessNotification(m_receive_buffer, received));
|
|
break;
|
|
default:
|
|
R_THROW(htc::ResultInvalidCategory());
|
|
}
|
|
|
|
/* If we used the receive buffer, signal that we're done with it. */
|
|
if (task->IsReceiveBufferRequired()) {
|
|
os::SignalEvent(std::addressof(m_receive_buffer_available_events[header->task_id]));
|
|
}
|
|
}
|
|
}
|
|
|
|
Result RpcClient::ReceiveHeader(RpcPacket *header) {
|
|
/* Receive. */
|
|
s64 received;
|
|
R_TRY(m_driver->Receive(std::addressof(received), reinterpret_cast<char *>(header), sizeof(*header), m_channel_id, htclow::ReceiveOption_ReceiveAllData));
|
|
|
|
/* Check size. */
|
|
R_UNLESS(static_cast<size_t>(received) == sizeof(*header), htc::ResultInvalidSize());
|
|
|
|
R_SUCCEED();
|
|
}
|
|
|
|
Result RpcClient::ReceiveBody(char *dst, size_t size) {
|
|
/* Receive. */
|
|
s64 received;
|
|
R_TRY(m_driver->Receive(std::addressof(received), dst, size, m_channel_id, htclow::ReceiveOption_ReceiveAllData));
|
|
|
|
/* Check size. */
|
|
R_UNLESS(static_cast<size_t>(received) == size, htc::ResultInvalidSize());
|
|
|
|
R_SUCCEED();
|
|
}
|
|
|
|
Result RpcClient::SendThread() {
|
|
while (true) {
|
|
/* Get a task. */
|
|
Task *task;
|
|
u32 task_id{};
|
|
PacketCategory category{};
|
|
do {
|
|
/* Dequeue a task. */
|
|
R_TRY(m_task_queue.Take(std::addressof(task_id), std::addressof(category)));
|
|
|
|
/* Get the task from the table. */
|
|
std::scoped_lock lk(m_mutex);
|
|
|
|
task = m_task_table.Get<Task>(task_id);
|
|
} while (task == nullptr);
|
|
|
|
/* If required, wait for the send buffer to become available. */
|
|
if (task->IsSendBufferRequired()) {
|
|
os::WaitEvent(std::addressof(m_send_buffer_available_events[task_id]));
|
|
|
|
/* Check if we've been cancelled. */
|
|
if (m_cancelled) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Handle the task. */
|
|
size_t packet_size;
|
|
switch (category) {
|
|
case PacketCategory::Request:
|
|
R_TRY(task->CreateRequest(std::addressof(packet_size), m_send_buffer, sizeof(m_send_buffer), task_id));
|
|
break;
|
|
case PacketCategory::Notification:
|
|
R_TRY(task->CreateNotification(std::addressof(packet_size), m_send_buffer, sizeof(m_send_buffer), task_id));
|
|
break;
|
|
AMS_UNREACHABLE_DEFAULT_CASE();
|
|
}
|
|
|
|
/* Send the request. */
|
|
R_TRY(this->SendRequest(m_send_buffer, packet_size));
|
|
}
|
|
|
|
R_THROW(htc::ResultCancelled());
|
|
}
|
|
|
|
Result RpcClient::SendRequest(const char *src, size_t size) {
|
|
/* Sanity check our size. */
|
|
AMS_ASSERT(util::IsIntValueRepresentable<s64>(size));
|
|
|
|
/* Send the data. */
|
|
s64 sent;
|
|
R_TRY(m_driver->Send(std::addressof(sent), src, static_cast<s64>(size), m_channel_id));
|
|
|
|
/* Check that we sent the right amount. */
|
|
R_UNLESS(sent == static_cast<s64>(size), htc::ResultInvalidSize());
|
|
|
|
R_SUCCEED();
|
|
}
|
|
|
|
void RpcClient::CancelBySocket(s32 handle) {
|
|
/* Check if we need to cancel each task. */
|
|
for (size_t i = 0; i < MaxRpcCount; ++i) {
|
|
/* Lock ourselves. */
|
|
std::scoped_lock lk(m_mutex);
|
|
|
|
/* Check that the task is active and is an htcs task. */
|
|
if (!m_task_active[i] || !m_is_htcs_task[i]) {
|
|
continue;
|
|
}
|
|
|
|
/* Get the htcs task. */
|
|
auto *htcs_task = m_task_table.Get<htcs::impl::rpc::HtcsTask>(i);
|
|
|
|
/* Handle the case where the task handle is the one we're cancelling. */
|
|
if (this->GetTaskHandle(i) == handle) {
|
|
/* If the task is complete, free it. */
|
|
if (htcs_task->GetTaskState() == RpcTaskState::Completed) {
|
|
m_task_active[i] = false;
|
|
m_is_htcs_task[i] = false;
|
|
m_task_table.Delete(i);
|
|
m_task_id_free_list.Free(i);
|
|
} else {
|
|
/* If the task is a send task, notify. */
|
|
if (htcs_task->GetTaskType() == htcs::impl::rpc::HtcsTaskType::Send) {
|
|
m_task_queue.Add(i, PacketCategory::Notification);
|
|
}
|
|
|
|
/* Cancel the task. */
|
|
htcs_task->Cancel(RpcTaskCancelReason::BySocket);
|
|
}
|
|
|
|
/* The task has been cancelled, so we can move on. */
|
|
continue;
|
|
}
|
|
|
|
/* Handle the case where the task is a select task. */
|
|
if (htcs_task->GetTaskType() == htcs::impl::rpc::HtcsTaskType::Select) {
|
|
/* Get the select task. */
|
|
auto *select_task = m_task_table.Get<htcs::impl::rpc::SelectTask>(i);
|
|
|
|
/* Get the handle counts. */
|
|
const auto num_read = select_task->GetReadHandleCount();
|
|
const auto num_write = select_task->GetWriteHandleCount();
|
|
const auto num_exception = select_task->GetExceptionHandleCount();
|
|
const auto total = num_read + num_write + num_exception;
|
|
|
|
/* Get the handle array. */
|
|
const auto *handles = select_task->GetHandles();
|
|
|
|
/* Check each handle. */
|
|
for (auto handle_idx = 0; handle_idx < total; ++handle_idx) {
|
|
if (handles[handle_idx] == handle) {
|
|
/* If the select is complete, free it. */
|
|
if (select_task->GetTaskState() == RpcTaskState::Completed) {
|
|
m_task_active[i] = false;
|
|
m_is_htcs_task[i] = false;
|
|
m_task_table.Delete(i);
|
|
m_task_id_free_list.Free(i);
|
|
} else {
|
|
/* Cancel the task. */
|
|
select_task->Cancel(RpcTaskCancelReason::BySocket);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
s32 RpcClient::GetTaskHandle(u32 task_id) {
|
|
/* TODO: Why is this necessary to avoid a bogus array-bounds warning? */
|
|
AMS_ASSUME(task_id < MaxRpcCount);
|
|
|
|
/* Check pre-conditions. */
|
|
AMS_ASSERT(m_task_active[task_id]);
|
|
AMS_ASSERT(m_is_htcs_task[task_id]);
|
|
|
|
/* Get the htcs task. */
|
|
auto *task = m_task_table.Get<htcs::impl::rpc::HtcsTask>(task_id);
|
|
|
|
/* Check that the task has a handle. */
|
|
if (!m_task_active[task_id] || !m_is_htcs_task[task_id] || task == nullptr) {
|
|
return -1;
|
|
}
|
|
|
|
/* Get the task's type. */
|
|
const auto type = task->GetTaskType();
|
|
|
|
/* Check that the task is new enough. */
|
|
if (task->GetVersion() == 3) {
|
|
if (type == htcs::impl::rpc::HtcsTaskType::Receive || type == htcs::impl::rpc::HtcsTaskType::Send) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/* Get the handle from the task. */
|
|
switch (type) {
|
|
case htcs::impl::rpc::HtcsTaskType::Receive:
|
|
return static_cast<htcs::impl::rpc::ReceiveTask *>(task)->GetHandle();
|
|
case htcs::impl::rpc::HtcsTaskType::Send:
|
|
return static_cast<htcs::impl::rpc::SendTask *>(task)->GetHandle();
|
|
case htcs::impl::rpc::HtcsTaskType::Shutdown:
|
|
return static_cast<htcs::impl::rpc::ShutdownTask *>(task)->GetHandle();
|
|
case htcs::impl::rpc::HtcsTaskType::Close:
|
|
return -1;
|
|
case htcs::impl::rpc::HtcsTaskType::Connect:
|
|
return static_cast<htcs::impl::rpc::ConnectTask *>(task)->GetHandle();
|
|
case htcs::impl::rpc::HtcsTaskType::Listen:
|
|
return static_cast<htcs::impl::rpc::ListenTask *>(task)->GetHandle();
|
|
case htcs::impl::rpc::HtcsTaskType::Accept:
|
|
return static_cast<htcs::impl::rpc::AcceptTask *>(task)->GetServerHandle();
|
|
case htcs::impl::rpc::HtcsTaskType::Socket:
|
|
return -1;
|
|
case htcs::impl::rpc::HtcsTaskType::Bind:
|
|
return static_cast<htcs::impl::rpc::BindTask *>(task)->GetHandle();
|
|
case htcs::impl::rpc::HtcsTaskType::Fcntl:
|
|
return static_cast<htcs::impl::rpc::FcntlTask *>(task)->GetHandle();
|
|
case htcs::impl::rpc::HtcsTaskType::ReceiveSmall:
|
|
return static_cast<htcs::impl::rpc::ReceiveSmallTask *>(task)->GetHandle();
|
|
case htcs::impl::rpc::HtcsTaskType::SendSmall:
|
|
return static_cast<htcs::impl::rpc::SendSmallTask *>(task)->GetHandle();
|
|
case htcs::impl::rpc::HtcsTaskType::Select:
|
|
return -1;
|
|
AMS_UNREACHABLE_DEFAULT_CASE();
|
|
}
|
|
}
|
|
|
|
}
|