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// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <chrono>
#include <fmt/ranges.h>
#include <string_view>
#include <thread>
#include "common/assert.h"
#include "common/logging.h"
#include "common/settings.h"
#include "core/core.h"
#include "core/hle/ipc.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/service/ipc_helpers.h"
#include "core/hle/service/service.h"
#include "core/hle/service/sm/sm.h"
#include "core/reporter.h"
#include "frontend_common/firmware_manager.h"
namespace Service {
/// @brief Creates a function string for logging, complete with the name (or header code, depending
/// on what's passed in) the port name, and all the cmd_buf arguments.
[[maybe_unused]] static std::string MakeFunctionString(std::string_view name, std::string_view port_name, const u32* cmd_buf) {
// Number of params == bits 0-5 + bits 6-11
int num_params = (cmd_buf[0] & 0x3F) + ((cmd_buf[0] >> 6) & 0x3F);
std::string function_string = fmt::format("fn '{}': port={}", name, port_name);
for (int i = 1; i <= num_params; ++i)
function_string += fmt::format(", cmd_buf[{}]={:#x}", i, cmd_buf[i]);
return function_string;
}
ServiceFrameworkBase::ServiceFrameworkBase(Core::System& system_, const char* service_name_, u32 max_sessions_, InvokerFn* handler_invoker_)
: SessionRequestHandler(system_.Kernel(), service_name_)
, system{system_}
, service_name{service_name_}
, is_i_storage{std::string_view{service_name_} == "IStorage"}
, handler_invoker{handler_invoker_}
, max_sessions{max_sessions_}
{}
ServiceFrameworkBase::~ServiceFrameworkBase() {
// Wait for other threads to release access before destroying
const auto guard = ServiceFrameworkBase::LockService();
}
void ServiceFrameworkBase::ReportUnimplementedFunction(HLERequestContext& ctx, const FunctionInfoBase* info, bool gated) {
auto cmd_buf = ctx.CommandBuffer();
std::string function_name = bool(info) ? info->name : "<unknown>";
fmt::memory_buffer buf;
fmt::format_to(std::back_inserter(buf), "function '{}({})': port='{}' cmd_buf={{[0]={:#x}", ctx.GetCommand(), function_name, service_name, cmd_buf[0]);
for (int i = 1; i <= 8; ++i)
fmt::format_to(std::back_inserter(buf), ", [{}]={:#x}", i, cmd_buf[i]);
buf.push_back('}');
system.GetReporter().SaveUnimplementedFunctionReport(ctx, ctx.GetCommand(), function_name, service_name);
if (gated) {
LOG_ERROR(Service, "Version gated {}", fmt::to_string(buf));
} else {
UNIMPLEMENTED_MSG("Unknown / unimplemented {}", fmt::to_string(buf));
}
if (Settings::values.use_auto_stub) {
LOG_WARNING(Service, "Using auto stub fallback!");
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultSuccess);
}
}
[[nodiscard]] static bool VersionGateCheck(Core::System& system, u32 vg) {
u32 const c_maj = FirmwareManager::GetFirmwareVersion(system).first.major;
u32 const c_min = FirmwareManager::GetFirmwareVersion(system).first.minor;
u32 const c_pat = FirmwareManager::GetFirmwareVersion(system).first.micro;
u32 const cg = (c_pat << 0) | (c_min << 4) | (c_maj << 8);
u32 const sg = (vg >> 16) & 0xffff;
u32 const ug = vg & 0xffff;
// feature available after current
if (sg && cg < sg)
return false;
// feature until xxx (0 = up to current)
return ug ? ug >= cg : true;
}
void ServiceFrameworkBase::InvokeRequest(HLERequestContext& ctx) {
const bool is_cmd_read = ctx.GetCommand() == 0;
auto const info = FindRequest(ctx.GetCommand());
if (!info.has_value() || info->handler_callback == nullptr)
return ReportUnimplementedFunction(ctx, &*info, false);
if (!VersionGateCheck(system, info->version_gating))
{
return ReportUnimplementedFunction(ctx, &*info, true);
}
LOG_TRACE(Service, "{}", MakeFunctionString(info->name, GetServiceName(), ctx.CommandBuffer()));
handler_invoker(this, info->handler_callback, ctx);
if (is_i_storage && is_cmd_read) {
const auto* const process = ctx.GetThread().GetOwnerProcess();
if (process != nullptr && system.IsNVDECActiveForProcess(process->GetId())) {
std::this_thread::sleep_for(std::chrono::microseconds{600});
}
}
}
void ServiceFrameworkBase::InvokeRequestTipc(HLERequestContext& ctx) {
auto const info = FindRequestTipc(ctx.GetCommand());
if (!info.has_value() || info->handler_callback == nullptr)
return ReportUnimplementedFunction(ctx, &*info, false);
LOG_ERROR(Service, "check for {} version_gating: {}", info->name, info->version_gating);
if (!VersionGateCheck(system, info->version_gating))
{
return ReportUnimplementedFunction(ctx, &*info, true);
}
LOG_TRACE(Service, "{}", MakeFunctionString(info->name, GetServiceName(), ctx.CommandBuffer()));
handler_invoker(this, info->handler_callback, ctx);
}
Result ServiceFrameworkBase::HandleSyncRequest(Kernel::KServerSession& session,
HLERequestContext& ctx) {
const auto guard = LockService();
Result result = ResultSuccess;
switch (ctx.GetCommandType()) {
case IPC::CommandType::Close:
case IPC::CommandType::TIPC_Close: {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultSuccess);
result = IPC::ResultSessionClosed;
break;
}
case IPC::CommandType::ControlWithContext:
case IPC::CommandType::Control: {
system.ServiceManager().InvokeControlRequest(ctx);
break;
}
case IPC::CommandType::RequestWithContext:
case IPC::CommandType::Request: {
InvokeRequest(ctx);
break;
}
default:
if (ctx.IsTipc()) {
InvokeRequestTipc(ctx);
break;
}
UNIMPLEMENTED_MSG("command_type={}", ctx.GetCommandType());
break;
}
// If emulation was shutdown, we are closing service threads, do not write the response back to
// memory that may be shutting down as well.
if (system.IsPoweredOn()) {
ctx.WriteToOutgoingCommandBuffer();
}
return result;
}
} // namespace Service
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