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citra/src/core/hle/service/apt/apt.cpp
bunnei 26979cd6ef Merge pull request #2533 from Lectem/apt_ipchelper 
IpcHelper enhancement and APT refactor
2017-04-06 14:44:52 -04:00

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// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/common_paths.h"
#include "common/file_util.h"
#include "common/logging/log.h"
#include "core/hle/applets/applet.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/mutex.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/shared_memory.h"
#include "core/hle/service/apt/apt.h"
#include "core/hle/service/apt/apt_a.h"
#include "core/hle/service/apt/apt_s.h"
#include "core/hle/service/apt/apt_u.h"
#include "core/hle/service/apt/bcfnt/bcfnt.h"
#include "core/hle/service/fs/archive.h"
#include "core/hle/service/ptm/ptm.h"
#include "core/hle/service/service.h"
#include "core/hw/aes/ccm.h"
#include "core/hw/aes/key.h"
namespace Service {
namespace APT {
/// Handle to shared memory region designated to for shared system font
static Kernel::SharedPtr<Kernel::SharedMemory> shared_font_mem;
static bool shared_font_relocated = false;
static Kernel::SharedPtr<Kernel::Mutex> lock;
static Kernel::SharedPtr<Kernel::Event> notification_event; ///< APT notification event
static Kernel::SharedPtr<Kernel::Event> parameter_event; ///< APT parameter event
static u32 cpu_percent; ///< CPU time available to the running application
// APT::CheckNew3DSApp will check this unknown_ns_state_field to determine processing mode
static u8 unknown_ns_state_field;
static ScreencapPostPermission screen_capture_post_permission;
/// Parameter data to be returned in the next call to Glance/ReceiveParameter
static MessageParameter next_parameter;
void SendParameter(const MessageParameter& parameter) {
next_parameter = parameter;
// Signal the event to let the application know that a new parameter is ready to be read
parameter_event->Signal();
}
void Initialize(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x2, 2, 0); // 0x20080
u32 app_id = rp.Pop<u32>();
u32 flags = rp.Pop<u32>();
IPC::RequestBuilder rb = rp.MakeBuilder(1, 3);
rb.Push(RESULT_SUCCESS);
rb.PushCopyHandles(Kernel::g_handle_table.Create(notification_event).MoveFrom(),
Kernel::g_handle_table.Create(parameter_event).MoveFrom());
// TODO(bunnei): Check if these events are cleared every time Initialize is called.
notification_event->Clear();
parameter_event->Clear();
ASSERT_MSG((nullptr != lock), "Cannot initialize without lock");
lock->Release();
LOG_DEBUG(Service_APT, "called app_id=0x%08X, flags=0x%08X", app_id, flags);
}
void GetSharedFont(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x44, 0, 0); // 0x00440000
IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
if (!shared_font_mem) {
LOG_ERROR(Service_APT, "shared font file missing - go dump it from your 3ds");
rb.Push<u32>(-1); // TODO: Find the right error code
rb.Skip(1 + 2, true);
return;
}
// The shared font has to be relocated to the new address before being passed to the
// application.
VAddr target_address =
Memory::PhysicalToVirtualAddress(shared_font_mem->linear_heap_phys_address);
if (!shared_font_relocated) {
BCFNT::RelocateSharedFont(shared_font_mem, target_address);
shared_font_relocated = true;
}
rb.Push(RESULT_SUCCESS); // No error
// Since the SharedMemory interface doesn't provide the address at which the memory was
// allocated, the real APT service calculates this address by scanning the entire address space
// (using svcQueryMemory) and searches for an allocation of the same size as the Shared Font.
rb.Push(target_address);
rb.PushCopyHandles(Kernel::g_handle_table.Create(shared_font_mem).MoveFrom());
}
void NotifyToWait(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x43, 1, 0); // 0x430040
u32 app_id = rp.Pop<u32>();
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(RESULT_SUCCESS); // No error
LOG_WARNING(Service_APT, "(STUBBED) app_id=%u", app_id);
}
void GetLockHandle(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1, 1, 0); // 0x10040
// Bits [0:2] are the applet type (System, Library, etc)
// Bit 5 tells the application that there's a pending APT parameter,
// this will cause the app to wait until parameter_event is signaled.
u32 applet_attributes = rp.Pop<u32>();
IPC::RequestBuilder rb = rp.MakeBuilder(3, 2);
rb.Push(RESULT_SUCCESS); // No error
rb.Push(applet_attributes); // Applet Attributes, this value is passed to Enable.
rb.Push<u32>(0); // Least significant bit = power button state
Kernel::Handle handle_copy = Kernel::g_handle_table.Create(lock).MoveFrom();
rb.PushCopyHandles(handle_copy);
LOG_WARNING(Service_APT, "(STUBBED) called handle=0x%08X applet_attributes=0x%08X", handle_copy,
applet_attributes);
}
void Enable(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x3, 1, 0); // 0x30040
u32 attributes = rp.Pop<u32>();
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(RESULT_SUCCESS); // No error
parameter_event->Signal(); // Let the application know that it has been started
LOG_WARNING(Service_APT, "(STUBBED) called attributes=0x%08X", attributes);
}
void GetAppletManInfo(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x5, 1, 0); // 0x50040
u32 unk = rp.Pop<u32>();
IPC::RequestBuilder rb = rp.MakeBuilder(5, 0);
rb.Push(RESULT_SUCCESS); // No error
rb.Push<u32>(0);
rb.Push<u32>(0);
rb.Push(static_cast<u32>(AppletId::HomeMenu)); // Home menu AppID
rb.Push(static_cast<u32>(AppletId::Application)); // TODO(purpasmart96): Do this correctly
LOG_WARNING(Service_APT, "(STUBBED) called unk=0x%08X", unk);
}
void IsRegistered(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x9, 1, 0); // 0x90040
u32 app_id = rp.Pop<u32>();
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
rb.Push(RESULT_SUCCESS); // No error
// TODO(Subv): An application is considered "registered" if it has already called APT::Enable
// handle this properly once we implement multiprocess support.
bool is_registered = false; // Set to not registered by default
if (app_id == static_cast<u32>(AppletId::AnyLibraryApplet)) {
is_registered = HLE::Applets::IsLibraryAppletRunning();
} else if (auto applet = HLE::Applets::Applet::Get(static_cast<AppletId>(app_id))) {
is_registered = true; // Set to registered
}
rb.Push(is_registered);
LOG_WARNING(Service_APT, "(STUBBED) called app_id=0x%08X", app_id);
}
void InquireNotification(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0xB, 1, 0); // 0xB0040
u32 app_id = rp.Pop<u32>();
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
rb.Push(RESULT_SUCCESS); // No error
rb.Push(static_cast<u32>(SignalType::None)); // Signal type
LOG_WARNING(Service_APT, "(STUBBED) called app_id=0x%08X", app_id);
}
void SendParameter(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0xC, 4, 4); // 0xC0104
u32 src_app_id = rp.Pop<u32>();
u32 dst_app_id = rp.Pop<u32>();
u32 signal_type = rp.Pop<u32>();
u32 buffer_size = rp.Pop<u32>();
Kernel::Handle handle = rp.PopHandle();
size_t size;
VAddr buffer = rp.PopStaticBuffer(&size);
std::shared_ptr<HLE::Applets::Applet> dest_applet =
HLE::Applets::Applet::Get(static_cast<AppletId>(dst_app_id));
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
if (dest_applet == nullptr) {
LOG_ERROR(Service_APT, "Unknown applet id=0x%08X", dst_app_id);
rb.Push<u32>(-1); // TODO(Subv): Find the right error code
return;
}
MessageParameter param;
param.destination_id = dst_app_id;
param.sender_id = src_app_id;
param.object = Kernel::g_handle_table.GetGeneric(handle);
param.signal = signal_type;
param.buffer.resize(buffer_size);
Memory::ReadBlock(buffer, param.buffer.data(), param.buffer.size());
rb.Push(dest_applet->ReceiveParameter(param));
LOG_WARNING(Service_APT,
"(STUBBED) called src_app_id=0x%08X, dst_app_id=0x%08X, signal_type=0x%08X,"
"buffer_size=0x%08X, handle=0x%08X, size=0x%08zX, in_param_buffer_ptr=0x%08X",
src_app_id, dst_app_id, signal_type, buffer_size, handle, size, buffer);
}
void ReceiveParameter(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0xD, 2, 0); // 0xD0080
u32 app_id = rp.Pop<u32>();
u32 buffer_size = rp.Pop<u32>();
size_t static_buff_size;
VAddr buffer = rp.PeekStaticBuffer(0, &static_buff_size);
if (buffer_size > static_buff_size)
LOG_WARNING(
Service_APT,
"buffer_size is bigger than the size in the buffer descriptor (0x%08X > 0x%08zX)",
buffer_size, static_buff_size);
IPC::RequestBuilder rb = rp.MakeBuilder(4, 4);
rb.Push(RESULT_SUCCESS); // No error
rb.Push(next_parameter.sender_id);
rb.Push(next_parameter.signal); // Signal type
ASSERT_MSG(next_parameter.buffer.size() <= buffer_size, "Input static buffer is too small !");
rb.Push(static_cast<u32>(next_parameter.buffer.size())); // Parameter buffer size
rb.PushMoveHandles((next_parameter.object != nullptr)
? Kernel::g_handle_table.Create(next_parameter.object).MoveFrom()
: 0);
rb.PushStaticBuffer(buffer, static_cast<u32>(next_parameter.buffer.size()), 0);
Memory::WriteBlock(buffer, next_parameter.buffer.data(), next_parameter.buffer.size());
LOG_WARNING(Service_APT, "called app_id=0x%08X, buffer_size=0x%08zX", app_id, buffer_size);
}
void GlanceParameter(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0xE, 2, 0); // 0xE0080
u32 app_id = rp.Pop<u32>();
u32 buffer_size = rp.Pop<u32>();
size_t static_buff_size;
VAddr buffer = rp.PeekStaticBuffer(0, &static_buff_size);
if (buffer_size > static_buff_size)
LOG_WARNING(
Service_APT,
"buffer_size is bigger than the size in the buffer descriptor (0x%08X > 0x%08zX)",
buffer_size, static_buff_size);
IPC::RequestBuilder rb = rp.MakeBuilder(4, 4);
rb.Push(RESULT_SUCCESS); // No error
rb.Push(next_parameter.sender_id);
rb.Push(next_parameter.signal); // Signal type
ASSERT_MSG(next_parameter.buffer.size() <= buffer_size, "Input static buffer is too small !");
rb.Push(static_cast<u32>(next_parameter.buffer.size())); // Parameter buffer size
rb.PushCopyHandles((next_parameter.object != nullptr)
? Kernel::g_handle_table.Create(next_parameter.object).MoveFrom()
: 0);
rb.PushStaticBuffer(buffer, static_cast<u32>(next_parameter.buffer.size()), 0);
Memory::WriteBlock(buffer, next_parameter.buffer.data(), next_parameter.buffer.size());
LOG_WARNING(Service_APT, "called app_id=0x%08X, buffer_size=0x%08zX", app_id, buffer_size);
}
void CancelParameter(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0xF, 4, 0); // 0xF0100
u32 check_sender = rp.Pop<u32>();
u32 sender_appid = rp.Pop<u32>();
u32 check_receiver = rp.Pop<u32>();
u32 receiver_appid = rp.Pop<u32>();
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
rb.Push(RESULT_SUCCESS); // No error
rb.Push(true); // Set to Success
LOG_WARNING(Service_APT, "(STUBBED) called check_sender=0x%08X, sender_appid=0x%08X, "
"check_receiver=0x%08X, receiver_appid=0x%08X",
check_sender, sender_appid, check_receiver, receiver_appid);
}
void PrepareToStartApplication(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x15, 5, 0); // 0x00150140
u32 title_info1 = rp.Pop<u32>();
u32 title_info2 = rp.Pop<u32>();
u32 title_info3 = rp.Pop<u32>();
u32 title_info4 = rp.Pop<u32>();
u32 flags = rp.Pop<u32>();
if (flags & 0x00000100) {
unknown_ns_state_field = 1;
}
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(RESULT_SUCCESS); // No error
LOG_WARNING(Service_APT,
"(STUBBED) called title_info1=0x%08X, title_info2=0x%08X, title_info3=0x%08X,"
"title_info4=0x%08X, flags=0x%08X",
title_info1, title_info2, title_info3, title_info4, flags);
}
void StartApplication(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1B, 3, 4); // 0x001B00C4
u32 buffer1_size = rp.Pop<u32>();
u32 buffer2_size = rp.Pop<u32>();
u32 flag = rp.Pop<u32>();
size_t size1;
VAddr buffer1_ptr = rp.PopStaticBuffer(&size1);
size_t size2;
VAddr buffer2_ptr = rp.PopStaticBuffer(&size2);
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(RESULT_SUCCESS); // No error
LOG_WARNING(Service_APT,
"(STUBBED) called buffer1_size=0x%08X, buffer2_size=0x%08X, flag=0x%08X,"
"size1=0x%08zX, buffer1_ptr=0x%08X, size2=0x%08zX, buffer2_ptr=0x%08X",
buffer1_size, buffer2_size, flag, size1, buffer1_ptr, size2, buffer2_ptr);
}
void AppletUtility(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x4B, 3, 2); // 0x004B00C2
// These are from 3dbrew - I'm not really sure what they're used for.
u32 utility_command = rp.Pop<u32>();
u32 input_size = rp.Pop<u32>();
u32 output_size = rp.Pop<u32>();
VAddr input_addr = rp.PopStaticBuffer();
VAddr output_addr = rp.PeekStaticBuffer(0);
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(RESULT_SUCCESS); // No error
LOG_WARNING(Service_APT,
"(STUBBED) called command=0x%08X, input_size=0x%08X, output_size=0x%08X, "
"input_addr=0x%08X, output_addr=0x%08X",
utility_command, input_size, output_size, input_addr, output_addr);
}
void SetAppCpuTimeLimit(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x4F, 2, 0); // 0x4F0080
u32 value = rp.Pop<u32>();
cpu_percent = rp.Pop<u32>();
if (value != 1) {
LOG_ERROR(Service_APT, "This value should be one, but is actually %u!", value);
}
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(RESULT_SUCCESS); // No error
LOG_WARNING(Service_APT, "(STUBBED) called cpu_percent=%u, value=%u", cpu_percent, value);
}
void GetAppCpuTimeLimit(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x50, 1, 0); // 0x500040
u32 value = rp.Pop<u32>();
if (value != 1) {
LOG_ERROR(Service_APT, "This value should be one, but is actually %u!", value);
}
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
rb.Push(RESULT_SUCCESS); // No error
rb.Push(cpu_percent);
LOG_WARNING(Service_APT, "(STUBBED) called value=%u", value);
}
void PrepareToStartLibraryApplet(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x18, 1, 0); // 0x180040
AppletId applet_id = static_cast<AppletId>(rp.Pop<u32>());
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
auto applet = HLE::Applets::Applet::Get(applet_id);
if (applet) {
LOG_WARNING(Service_APT, "applet has already been started id=%08X", applet_id);
rb.Push(RESULT_SUCCESS);
} else {
rb.Push(HLE::Applets::Applet::Create(applet_id));
}
LOG_DEBUG(Service_APT, "called applet_id=%08X", applet_id);
}
void PreloadLibraryApplet(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x16, 1, 0); // 0x160040
AppletId applet_id = static_cast<AppletId>(rp.Pop<u32>());
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
auto applet = HLE::Applets::Applet::Get(applet_id);
if (applet) {
LOG_WARNING(Service_APT, "applet has already been started id=%08X", applet_id);
rb.Push(RESULT_SUCCESS);
} else {
rb.Push(HLE::Applets::Applet::Create(applet_id));
}
LOG_DEBUG(Service_APT, "called applet_id=%08X", applet_id);
}
void StartLibraryApplet(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1E, 2, 4); // 0x1E0084
AppletId applet_id = static_cast<AppletId>(rp.Pop<u32>());
std::shared_ptr<HLE::Applets::Applet> applet = HLE::Applets::Applet::Get(applet_id);
LOG_DEBUG(Service_APT, "called applet_id=%08X", applet_id);
if (applet == nullptr) {
LOG_ERROR(Service_APT, "unknown applet id=%08X", applet_id);
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0, false);
rb.Push<u32>(-1); // TODO(Subv): Find the right error code
return;
}
size_t buffer_size = rp.Pop<u32>();
Kernel::Handle handle = rp.PopHandle();
VAddr buffer_addr = rp.PopStaticBuffer();
AppletStartupParameter parameter;
parameter.object = Kernel::g_handle_table.GetGeneric(handle);
parameter.buffer.resize(buffer_size);
Memory::ReadBlock(buffer_addr, parameter.buffer.data(), parameter.buffer.size());
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(applet->Start(parameter));
}
void CancelLibraryApplet(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x3B, 1, 0); // 0x003B0040
bool exiting = rp.Pop<bool>();
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push<u32>(1); // TODO: Find the return code meaning
LOG_WARNING(Service_APT, "(STUBBED) called exiting=%d", exiting);
}
void SetScreenCapPostPermission(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x55, 1, 0); // 0x00550040
screen_capture_post_permission = static_cast<ScreencapPostPermission>(rp.Pop<u32>() & 0xF);
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(RESULT_SUCCESS); // No error
LOG_WARNING(Service_APT, "(STUBBED) screen_capture_post_permission=%u",
screen_capture_post_permission);
}
void GetScreenCapPostPermission(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x56, 0, 0); // 0x00560000
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
rb.Push(RESULT_SUCCESS); // No error
rb.Push(static_cast<u32>(screen_capture_post_permission));
LOG_WARNING(Service_APT, "(STUBBED) screen_capture_post_permission=%u",
screen_capture_post_permission);
}
void GetAppletInfo(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x6, 1, 0); // 0x60040
auto app_id = static_cast<AppletId>(rp.Pop<u32>());
if (auto applet = HLE::Applets::Applet::Get(app_id)) {
// TODO(Subv): Get the title id for the current applet and write it in the response[2-3]
IPC::RequestBuilder rb = rp.MakeBuilder(7, 0);
rb.Push(RESULT_SUCCESS);
u64 title_id = 0;
rb.Push(title_id);
rb.Push(static_cast<u32>(Service::FS::MediaType::NAND));
rb.Push(true); // Registered
rb.Push(true); // Loaded
rb.Push<u32>(0); // Applet Attributes
} else {
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(ResultCode(ErrorDescription::NotFound, ErrorModule::Applet, ErrorSummary::NotFound,
ErrorLevel::Status));
}
LOG_WARNING(Service_APT, "(stubbed) called appid=%u", app_id);
}
void GetStartupArgument(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x51, 2, 0); // 0x00510080
u32 parameter_size = rp.Pop<u32>();
StartupArgumentType startup_argument_type = static_cast<StartupArgumentType>(rp.Pop<u8>());
if (parameter_size >= 0x300) {
LOG_ERROR(
Service_APT,
"Parameter size is outside the valid range (capped to 0x300): parameter_size=0x%08x",
parameter_size);
return;
}
size_t static_buff_size;
VAddr addr = rp.PeekStaticBuffer(0, &static_buff_size);
if (parameter_size > static_buff_size)
LOG_WARNING(
Service_APT,
"parameter_size is bigger than the size in the buffer descriptor (0x%08X > 0x%08zX)",
parameter_size, static_buff_size);
if (addr && parameter_size) {
Memory::ZeroBlock(addr, parameter_size);
}
LOG_WARNING(Service_APT, "(stubbed) called startup_argument_type=%u , parameter_size=0x%08x",
startup_argument_type, parameter_size);
IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
rb.Push(RESULT_SUCCESS);
rb.Push<u32>(0);
rb.PushStaticBuffer(addr, parameter_size, 0);
}
void Wrap(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x46, 4, 4);
const u32 output_size = rp.Pop<u32>();
const u32 input_size = rp.Pop<u32>();
const u32 nonce_offset = rp.Pop<u32>();
u32 nonce_size = rp.Pop<u32>();
size_t desc_size;
IPC::MappedBufferPermissions desc_permission;
const VAddr input = rp.PopMappedBuffer(&desc_size, &desc_permission);
ASSERT(desc_size == input_size && desc_permission == IPC::MappedBufferPermissions::R);
const VAddr output = rp.PopMappedBuffer(&desc_size, &desc_permission);
ASSERT(desc_size == output_size && desc_permission == IPC::MappedBufferPermissions::W);
// Note: real 3DS still returns SUCCESS when the sizes don't match. It seems that it doesn't
// check the buffer size and writes data with potential overflow.
ASSERT_MSG(output_size == input_size + HW::AES::CCM_MAC_SIZE,
"input_size (%d) doesn't match to output_size (%d)", input_size, output_size);
LOG_DEBUG(Service_APT, "called, output_size=%u, input_size=%u, nonce_offset=%u, nonce_size=%u",
output_size, input_size, nonce_offset, nonce_size);
// Note: This weird nonce size modification is verified against real 3DS
nonce_size = std::min<u32>(nonce_size & ~3, HW::AES::CCM_NONCE_SIZE);
// Reads nonce and concatenates the rest of the input as plaintext
HW::AES::CCMNonce nonce{};
Memory::ReadBlock(input + nonce_offset, nonce.data(), nonce_size);
u32 pdata_size = input_size - nonce_size;
std::vector<u8> pdata(pdata_size);
Memory::ReadBlock(input, pdata.data(), nonce_offset);
Memory::ReadBlock(input + nonce_offset + nonce_size, pdata.data() + nonce_offset,
pdata_size - nonce_offset);
// Encrypts the plaintext using AES-CCM
auto cipher = HW::AES::EncryptSignCCM(pdata, nonce, HW::AES::KeySlotID::APTWrap);
// Puts the nonce to the beginning of the output, with ciphertext followed
Memory::WriteBlock(output, nonce.data(), nonce_size);
Memory::WriteBlock(output + nonce_size, cipher.data(), cipher.size());
IPC::RequestBuilder rb = rp.MakeBuilder(1, 4);
rb.Push(RESULT_SUCCESS);
// Unmap buffer
rb.PushMappedBuffer(input, input_size, IPC::MappedBufferPermissions::R);
rb.PushMappedBuffer(output, output_size, IPC::MappedBufferPermissions::W);
}
void Unwrap(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x47, 4, 4);
const u32 output_size = rp.Pop<u32>();
const u32 input_size = rp.Pop<u32>();
const u32 nonce_offset = rp.Pop<u32>();
u32 nonce_size = rp.Pop<u32>();
size_t desc_size;
IPC::MappedBufferPermissions desc_permission;
const VAddr input = rp.PopMappedBuffer(&desc_size, &desc_permission);
ASSERT(desc_size == input_size && desc_permission == IPC::MappedBufferPermissions::R);
const VAddr output = rp.PopMappedBuffer(&desc_size, &desc_permission);
ASSERT(desc_size == output_size && desc_permission == IPC::MappedBufferPermissions::W);
// Note: real 3DS still returns SUCCESS when the sizes don't match. It seems that it doesn't
// check the buffer size and writes data with potential overflow.
ASSERT_MSG(output_size == input_size - HW::AES::CCM_MAC_SIZE,
"input_size (%d) doesn't match to output_size (%d)", input_size, output_size);
LOG_DEBUG(Service_APT, "called, output_size=%u, input_size=%u, nonce_offset=%u, nonce_size=%u",
output_size, input_size, nonce_offset, nonce_size);
// Note: This weird nonce size modification is verified against real 3DS
nonce_size = std::min<u32>(nonce_size & ~3, HW::AES::CCM_NONCE_SIZE);
// Reads nonce and cipher text
HW::AES::CCMNonce nonce{};
Memory::ReadBlock(input, nonce.data(), nonce_size);
u32 cipher_size = input_size - nonce_size;
std::vector<u8> cipher(cipher_size);
Memory::ReadBlock(input + nonce_size, cipher.data(), cipher_size);
// Decrypts the ciphertext using AES-CCM
auto pdata = HW::AES::DecryptVerifyCCM(cipher, nonce, HW::AES::KeySlotID::APTWrap);
IPC::RequestBuilder rb = rp.MakeBuilder(1, 4);
if (!pdata.empty()) {
// Splits the plaintext and put the nonce in between
Memory::WriteBlock(output, pdata.data(), nonce_offset);
Memory::WriteBlock(output + nonce_offset, nonce.data(), nonce_size);
Memory::WriteBlock(output + nonce_offset + nonce_size, pdata.data() + nonce_offset,
pdata.size() - nonce_offset);
rb.Push(RESULT_SUCCESS);
} else {
LOG_ERROR(Service_APT, "Failed to decrypt data");
rb.Push(ResultCode(static_cast<ErrorDescription>(1), ErrorModule::PS,
ErrorSummary::WrongArgument, ErrorLevel::Status));
}
// Unmap buffer
rb.PushMappedBuffer(input, input_size, IPC::MappedBufferPermissions::R);
rb.PushMappedBuffer(output, output_size, IPC::MappedBufferPermissions::W);
}
void CheckNew3DSApp(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x101, 0, 0); // 0x01010000
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
if (unknown_ns_state_field) {
rb.Push(RESULT_SUCCESS);
rb.Push<u32>(0);
} else {
PTM::CheckNew3DS(rb);
}
LOG_WARNING(Service_APT, "(STUBBED) called");
}
void CheckNew3DS(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x102, 0, 0); // 0x01020000
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
PTM::CheckNew3DS(rb);
LOG_WARNING(Service_APT, "(STUBBED) called");
}
void Init() {
AddService(new APT_A_Interface);
AddService(new APT_S_Interface);
AddService(new APT_U_Interface);
HLE::Applets::Init();
// Load the shared system font (if available).
// The expected format is a decrypted, uncompressed BCFNT file with the 0x80 byte header
// generated by the APT:U service. The best way to get is by dumping it from RAM. We've provided
// a homebrew app to do this: https://github.com/citra-emu/3dsutils. Put the resulting file
// "shared_font.bin" in the Citra "sysdata" directory.
std::string filepath = FileUtil::GetUserPath(D_SYSDATA_IDX) + SHARED_FONT;
FileUtil::CreateFullPath(filepath); // Create path if not already created
FileUtil::IOFile file(filepath, "rb");
if (file.IsOpen()) {
// Create shared font memory object
using Kernel::MemoryPermission;
shared_font_mem =
Kernel::SharedMemory::Create(nullptr, 0x332000, // 3272 KB
MemoryPermission::ReadWrite, MemoryPermission::Read, 0,
Kernel::MemoryRegion::SYSTEM, "APT:SharedFont");
// Read shared font data
file.ReadBytes(shared_font_mem->GetPointer(), file.GetSize());
} else {
LOG_WARNING(Service_APT, "Unable to load shared font: %s", filepath.c_str());
shared_font_mem = nullptr;
}
lock = Kernel::Mutex::Create(false, "APT_U:Lock");
cpu_percent = 0;
unknown_ns_state_field = 0;
screen_capture_post_permission =
ScreencapPostPermission::CleanThePermission; // TODO(JamePeng): verify the initial value
// TODO(bunnei): Check if these are created in Initialize or on APT process startup.
notification_event = Kernel::Event::Create(Kernel::ResetType::OneShot, "APT_U:Notification");
parameter_event = Kernel::Event::Create(Kernel::ResetType::OneShot, "APT_U:Start");
next_parameter.signal = static_cast<u32>(SignalType::Wakeup);
next_parameter.destination_id = 0x300;
}
void Shutdown() {
shared_font_mem = nullptr;
shared_font_relocated = false;
lock = nullptr;
notification_event = nullptr;
parameter_event = nullptr;
next_parameter.object = nullptr;
HLE::Applets::Shutdown();
}
} // namespace APT
} // namespace Service
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