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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <tuple>
#include "common/assert.h"
#include "core/core.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/k_client_port.h"
#include "core/hle/kernel/k_client_session.h"
#include "core/hle/kernel/k_port.h"
#include "core/hle/kernel/k_scoped_resource_reservation.h"
#include "core/hle/kernel/k_server_port.h"
#include "core/hle/kernel/k_server_session.h"
#include "core/hle/kernel/k_session.h"
#include "core/hle/result.h"
#include "core/hle/service/sm/controller.h"
#include "core/hle/service/sm/sm.h"
namespace Service::SM {
constexpr ResultCode ERR_NOT_INITIALIZED(ErrorModule::SM, 2);
constexpr ResultCode ERR_ALREADY_REGISTERED(ErrorModule::SM, 4);
constexpr ResultCode ERR_INVALID_NAME(ErrorModule::SM, 6);
constexpr ResultCode ERR_SERVICE_NOT_REGISTERED(ErrorModule::SM, 7);
ServiceManager::ServiceManager(Kernel::KernelCore& kernel_) : kernel{kernel_} {}
ServiceManager::~ServiceManager() = default;
void ServiceManager::InvokeControlRequest(Kernel::HLERequestContext& context) {
controller_interface->InvokeRequest(context);
}
static ResultCode ValidateServiceName(const std::string& name) {
if (name.empty() || name.size() > 8) {
LOG_ERROR(Service_SM, "Invalid service name! service={}", name);
return ERR_INVALID_NAME;
}
return RESULT_SUCCESS;
}
Kernel::KClientPort& ServiceManager::InterfaceFactory(ServiceManager& self, Core::System& system) {
ASSERT(self.sm_interface.expired());
auto sm = std::make_shared<SM>(self, system);
self.sm_interface = sm;
self.controller_interface = std::make_unique<Controller>(system);
return sm->CreatePort(system.Kernel());
}
ResultVal<Kernel::KServerPort*> ServiceManager::RegisterService(std::string name,
u32 max_sessions) {
CASCADE_CODE(ValidateServiceName(name));
if (registered_services.find(name) != registered_services.end()) {
LOG_ERROR(Service_SM, "Service is already registered! service={}", name);
return ERR_ALREADY_REGISTERED;
}
auto* port = Kernel::KPort::Create(kernel);
port->Initialize(max_sessions, false, name);
registered_services.emplace(std::move(name), port);
return MakeResult(&port->GetServerPort());
}
ResultCode ServiceManager::UnregisterService(const std::string& name) {
CASCADE_CODE(ValidateServiceName(name));
const auto iter = registered_services.find(name);
if (iter == registered_services.end()) {
LOG_ERROR(Service_SM, "Server is not registered! service={}", name);
return ERR_SERVICE_NOT_REGISTERED;
}
iter->second->Close();
registered_services.erase(iter);
return RESULT_SUCCESS;
}
ResultVal<Kernel::KPort*> ServiceManager::GetServicePort(const std::string& name) {
CASCADE_CODE(ValidateServiceName(name));
auto it = registered_services.find(name);
if (it == registered_services.end()) {
LOG_ERROR(Service_SM, "Server is not registered! service={}", name);
return ERR_SERVICE_NOT_REGISTERED;
}
return MakeResult(it->second);
}
SM::~SM() = default;
/**
* SM::Initialize service function
* Inputs:
* 0: 0x00000000
* Outputs:
* 0: ResultCode
*/
void SM::Initialize(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_SM, "called");
is_initialized = true;
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
void SM::GetService(Kernel::HLERequestContext& ctx) {
auto result = GetServiceImpl(ctx);
if (result.Succeeded()) {
IPC::ResponseBuilder rb{ctx, 2, 0, 1, IPC::ResponseBuilder::Flags::AlwaysMoveHandles};
rb.Push(result.Code());
rb.PushMoveObjects(result.Unwrap());
} else {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result.Code());
}
}
void SM::GetServiceTipc(Kernel::HLERequestContext& ctx) {
auto result = GetServiceImpl(ctx);
IPC::ResponseBuilder rb{ctx, 2, 0, 1, IPC::ResponseBuilder::Flags::AlwaysMoveHandles};
rb.Push(result.Code());
rb.PushMoveObjects(result.Succeeded() ? result.Unwrap() : nullptr);
}
static std::string PopServiceName(IPC::RequestParser& rp) {
auto name_buf = rp.PopRaw<std::array<char, 8>>();
std::string result;
for (const auto& c : name_buf) {
if (c >= ' ' && c <= '~') {
result.push_back(c);
}
}
return result;
}
ResultVal<Kernel::KClientSession*> SM::GetServiceImpl(Kernel::HLERequestContext& ctx) {
if (!is_initialized) {
return ERR_NOT_INITIALIZED;
}
IPC::RequestParser rp{ctx};
std::string name(PopServiceName(rp));
auto result = service_manager.GetServicePort(name);
if (result.Failed()) {
LOG_ERROR(Service_SM, "called service={} -> error 0x{:08X}", name, result.Code().raw);
return result.Code();
}
auto* port = result.Unwrap();
Kernel::KScopedResourceReservation session_reservation(
kernel.CurrentProcess()->GetResourceLimit(), Kernel::LimitableResource::Sessions);
R_UNLESS(session_reservation.Succeeded(), Kernel::ResultLimitReached);
auto* session = Kernel::KSession::Create(kernel);
session->Initialize(&port->GetClientPort(), std::move(name));
// Commit the session reservation.
session_reservation.Commit();
if (port->GetServerPort().GetHLEHandler()) {
port->GetServerPort().GetHLEHandler()->ClientConnected(&session->GetServerSession());
} else {
port->EnqueueSession(&session->GetServerSession());
}
LOG_DEBUG(Service_SM, "called service={} -> session={}", name, session->GetId());
return MakeResult(&session->GetClientSession());
}
void SM::RegisterService(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
std::string name(PopServiceName(rp));
const auto is_light = static_cast<bool>(rp.PopRaw<u32>());
const auto max_session_count = rp.PopRaw<u32>();
LOG_DEBUG(Service_SM, "called with name={}, max_session_count={}, is_light={}", name,
max_session_count, is_light);
auto handle = service_manager.RegisterService(name, max_session_count);
if (handle.Failed()) {
LOG_ERROR(Service_SM, "failed to register service with error_code={:08X}",
handle.Code().raw);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(handle.Code());
return;
}
IPC::ResponseBuilder rb{ctx, 2, 0, 1, IPC::ResponseBuilder::Flags::AlwaysMoveHandles};
rb.Push(handle.Code());
auto server_port = handle.Unwrap();
rb.PushMoveObjects(server_port);
}
void SM::UnregisterService(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
std::string name(PopServiceName(rp));
LOG_DEBUG(Service_SM, "called with name={}", name);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(service_manager.UnregisterService(name));
}
SM::SM(ServiceManager& service_manager_, Core::System& system_)
: ServiceFramework{system_, "sm:", 4},
service_manager{service_manager_}, kernel{system_.Kernel()} {
RegisterHandlers({
{0, &SM::Initialize, "Initialize"},
{1, &SM::GetService, "GetService"},
{2, &SM::RegisterService, "RegisterService"},
{3, &SM::UnregisterService, "UnregisterService"},
{4, nullptr, "DetachClient"},
});
RegisterHandlersTipc({
{0, &SM::Initialize, "Initialize"},
{1, &SM::GetServiceTipc, "GetService"},
{2, &SM::RegisterService, "RegisterService"},
{3, &SM::UnregisterService, "UnregisterService"},
{4, nullptr, "DetachClient"},
});
}
} // namespace Service::SM
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