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nfp: Validate amiibo files

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This commit is contained in:
Narr the Reg 2022-02-08 14:09:30 -06:00
parent 41b65d38fa
commit 29f9a454eb
2 changed files with 145 additions and 41 deletions
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115
src/core/hle/service/nfp/nfp.cpp
View file

@ -108,7 +108,7 @@ void IUser::StartDetection(Kernel::HLERequestContext& ctx) {
// TODO(german77): Loop through all interfaces
if (device_handle == nfp_interface.GetHandle()) {
const auto result = nfp_interface.StartDetection();
const auto result = nfp_interface.StartDetection(nfp_protocol);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result);
return;
@ -209,7 +209,6 @@ void IUser::GetApplicationArea(Kernel::HLERequestContext& ctx) {
if (device_handle == nfp_interface.GetHandle()) {
std::vector<u8> data{};
const auto result = nfp_interface.GetApplicationArea(data);
ctx.WriteBuffer(data);
IPC::ResponseBuilder rb{ctx, 3};
rb.Push(result);
@ -232,7 +231,6 @@ void IUser::SetApplicationArea(Kernel::HLERequestContext& ctx) {
// TODO(german77): Loop through all interfaces
if (device_handle == nfp_interface.GetHandle()) {
const auto result = nfp_interface.SetApplicationArea(data);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result);
return;
@ -255,7 +253,6 @@ void IUser::CreateApplicationArea(Kernel::HLERequestContext& ctx) {
// TODO(german77): Loop through all interfaces
if (device_handle == nfp_interface.GetHandle()) {
const auto result = nfp_interface.CreateApplicationArea(access_id, data);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result);
return;
@ -390,7 +387,7 @@ void IUser::AttachDeactivateEvent(Kernel::HLERequestContext& ctx) {
}
void IUser::GetState(Kernel::HLERequestContext& ctx) {
LOG_INFO(Service_NFC, "called");
LOG_DEBUG(Service_NFC, "called");
IPC::ResponseBuilder rb{ctx, 3, 0};
rb.Push(ResultSuccess);
@ -400,7 +397,7 @@ void IUser::GetState(Kernel::HLERequestContext& ctx) {
void IUser::GetDeviceState(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const auto device_handle{rp.Pop<u64>()};
LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
LOG_DEBUG(Service_NFP, "called, device_handle={}", device_handle);
// TODO(german77): Loop through all interfaces
if (device_handle == nfp_interface.GetHandle()) {
@ -419,7 +416,7 @@ void IUser::GetDeviceState(Kernel::HLERequestContext& ctx) {
void IUser::GetNpadId(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const auto device_handle{rp.Pop<u64>()};
LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
LOG_DEBUG(Service_NFP, "called, device_handle={}", device_handle);
// TODO(german77): Loop through all interfaces
if (device_handle == nfp_interface.GetHandle()) {
@ -438,7 +435,7 @@ void IUser::GetNpadId(Kernel::HLERequestContext& ctx) {
void IUser::GetApplicationAreaSize(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const auto device_handle{rp.Pop<u64>()};
LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
LOG_DEBUG(Service_NFP, "called, device_handle={}", device_handle);
// TODO(german77): Loop through all interfaces
if (device_handle == nfp_interface.GetHandle()) {
@ -493,6 +490,11 @@ bool Module::Interface::LoadAmiibo(const std::vector<u8>& buffer) {
LOG_INFO(Service_NFP, "New Amiibo detected");
std::memcpy(&amiibo, buffer.data(), sizeof(amiibo));
if (!IsAmiiboValid()) {
return false;
}
device_state = DeviceState::TagFound;
activate_event->GetWritableEvent().Signal();
return true;
@ -501,13 +503,54 @@ bool Module::Interface::LoadAmiibo(const std::vector<u8>& buffer) {
void Module::Interface::CloseAmiibo() {
LOG_INFO(Service_NFP, "Remove amiibo");
device_state = DeviceState::TagRemoved;
write_counter = 0;
is_application_area_initialized = false;
application_area_id = 0;
application_area_data.clear();
deactivate_event->GetWritableEvent().Signal();
}
bool Module::Interface::IsAmiiboValid() const {
LOG_INFO(Service_NFP, "uuid_lock=0x{0:x}", amiibo.uuid_lock);
LOG_INFO(Service_NFP, "compability_container=0x{0:x}", amiibo.compability_container);
LOG_INFO(Service_NFP, "crypto_init=0x{0:x}", amiibo.crypto_init);
LOG_INFO(Service_NFP, "write_count={}", amiibo.write_count);
LOG_INFO(Service_NFP, "character_id=0x{0:x}", amiibo.model_info.character_id);
LOG_INFO(Service_NFP, "character_variant={}", amiibo.model_info.character_variant);
LOG_INFO(Service_NFP, "amiibo_type={}", amiibo.model_info.amiibo_type);
LOG_INFO(Service_NFP, "model_number=0x{0:x}", amiibo.model_info.model_number);
LOG_INFO(Service_NFP, "series={}", amiibo.model_info.series);
LOG_INFO(Service_NFP, "fixed_value=0x{0:x}", amiibo.model_info.fixed);
LOG_INFO(Service_NFP, "tag_dynamic_lock=0x{0:x}", amiibo.tag_dynamic_lock);
LOG_INFO(Service_NFP, "tag_CFG0=0x{0:x}", amiibo.tag_CFG0);
LOG_INFO(Service_NFP, "tag_CFG1=0x{0:x}", amiibo.tag_CFG1);
// Check against all know constants on an amiibo binary
if (amiibo.uuid_lock != 0xE00F) {
return false;
}
if (amiibo.compability_container != 0xEEFF10F1UL) {
return false;
}
if ((amiibo.crypto_init & 0xFF) != 0xA5) {
return false;
}
if (amiibo.model_info.fixed != 0x02) {
return false;
}
if ((amiibo.tag_dynamic_lock & 0xFFFFFF) != 0x0F0001) {
return false;
}
if (amiibo.tag_CFG0 != 0x04000000UL) {
return false;
}
if (amiibo.tag_CFG1 != 0x5F) {
return false;
}
return true;
}
Kernel::KReadableEvent& Module::Interface::GetActivateEvent() const {
return activate_event->GetReadableEvent();
}
@ -522,13 +565,12 @@ void Module::Interface::Initialize() {
void Module::Interface::Finalize() {
device_state = DeviceState::Unaviable;
write_counter = 0;
is_application_area_initialized = false;
application_area_id = 0;
application_area_data.clear();
}
ResultCode Module::Interface::StartDetection() {
ResultCode Module::Interface::StartDetection(s32 protocol_) {
auto npad_device = system.HIDCore().GetEmulatedController(npad_id);
// TODO(german77): Add callback for when nfc data is available
@ -536,6 +578,7 @@ ResultCode Module::Interface::StartDetection() {
if (device_state == DeviceState::Initialized || device_state == DeviceState::TagRemoved) {
npad_device->SetPollingMode(Common::Input::PollingMode::NFC);
device_state = DeviceState::SearchingForTag;
protocol = protocol_;
return ResultSuccess;
}
@ -589,8 +632,8 @@ ResultCode Module::Interface::GetTagInfo(TagInfo& tag_info) const {
tag_info = {
.uuid = amiibo.uuid,
.uuid_length = static_cast<u8>(amiibo.uuid.size()),
.protocol = 0xFFFFFFFF, // TODO(ogniK): Figure out actual values
.tag_type = 0xFFFFFFFF,
.protocol = protocol,
.tag_type = static_cast<u32>(amiibo.model_info.amiibo_type),
};
return ResultSuccess;
}
@ -610,7 +653,7 @@ ResultCode Module::Interface::GetCommonInfo(CommonInfo& common_info) const {
.last_write_year = 2022,
.last_write_month = 2,
.last_write_day = 7,
.write_counter = write_counter,
.write_counter = amiibo.write_count,
.version = 1,
.application_area_size = ApplicationAreaSize,
};
@ -652,11 +695,11 @@ ResultCode Module::Interface::OpenApplicationArea(u32 access_id) {
LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
return ErrCodes::WrongDeviceState;
}
// if (AmiiboApplicationDataExist(access_id)) {
// application_area_data = LoadAmiiboApplicationData(access_id);
// application_area_id = access_id;
// is_application_area_initialized = true;
// }
if (AmiiboApplicationDataExist(access_id)) {
application_area_data = LoadAmiiboApplicationData(access_id);
application_area_id = access_id;
is_application_area_initialized = true;
}
if (!is_application_area_initialized) {
LOG_ERROR(Service_NFP, "Application area is not initialized");
return ErrCodes::ApplicationAreaIsNotInitialized;
@ -689,8 +732,7 @@ ResultCode Module::Interface::SetApplicationArea(const std::vector<u8>& data) {
return ErrCodes::ApplicationAreaIsNotInitialized;
}
application_area_data = data;
write_counter++;
// SaveAmiiboApplicationData(application_area_id,application_area_data);
SaveAmiiboApplicationData(application_area_id, application_area_data);
return ResultSuccess;
}
@ -699,21 +741,32 @@ ResultCode Module::Interface::CreateApplicationArea(u32 access_id, const std::ve
LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
return ErrCodes::WrongDeviceState;
}
// if (AmiiboApplicationDataExist(access_id)) {
// LOG_ERROR(Service_NFP, "Application area already exist");
// return ErrCodes::ApplicationAreaExist;
// }
// if (LoadAmiiboApplicationData(access_id,data)) {
// is_application_area_initialized = true;
// application_area_id = access_id;
// }
if (AmiiboApplicationDataExist(access_id)) {
LOG_ERROR(Service_NFP, "Application area already exist");
return ErrCodes::ApplicationAreaExist;
}
application_area_data = data;
application_area_id = access_id;
write_counter = 0;
// SaveAmiiboApplicationData(application_area_id,application_area_data);
SaveAmiiboApplicationData(application_area_id, application_area_data);
return ResultSuccess;
}
bool Module::Interface::AmiiboApplicationDataExist(u32 access_id) const {
// TODO(german77): Check if file exist
return false;
}
const std::vector<u8> Module::Interface::LoadAmiiboApplicationData(u32 access_id) const {
// TODO(german77): Read file
std::vector<u8> data(ApplicationAreaSize);
return data;
}
void Module::Interface::SaveAmiiboApplicationData(u32 access_id,
const std::vector<u8>& data) const {
// TODO(german77): Save file
}
u64 Module::Interface::GetHandle() const {
// Generate a handle based of the npad id
return static_cast<u64>(npad_id);

71
src/core/hle/service/nfp/nfp.h
View file

@ -53,11 +53,43 @@ enum class MountTarget : u32 {
All,
};
enum class AmiiboType : u8 {
Figure,
Card,
Yarn,
};
enum class AmiiboSeries : u8 {
SuperSmashBros,
SuperMario,
ChibiRobo,
YoshiWoollyWorld,
Splatoon,
AnimalCrossing,
EightBitMario,
Skylanders,
Unknown8,
TheLegendOfZelda,
ShovelKnight,
Unknown11,
Kiby,
Pokemon,
MarioSportsSuperstars,
MonsterHunter,
BoxBoy,
Pikmin,
FireEmblem,
Metroid,
Others,
MegaMan,
Diablo
};
struct TagInfo {
std::array<u8, 10> uuid;
u8 uuid_length;
INSERT_PADDING_BYTES(0x15);
u32 protocol;
s32 protocol;
u32 tag_type;
INSERT_PADDING_BYTES(0x30);
};
@ -77,10 +109,13 @@ static_assert(sizeof(CommonInfo) == 0x40, "CommonInfo is an invalid size");
struct ModelInfo {
u16 character_id;
u8 character_variant;
u8 figure_type;
AmiiboType amiibo_type;
u16 model_number;
u8 series;
INSERT_PADDING_BYTES(0x39);
AmiiboSeries series;
u8 fixed; // Must be 02
INSERT_PADDING_BYTES(0x4); // Unknown
INSERT_PADDING_BYTES(0x20); // Probably a SHA256-(HMAC?) hash
INSERT_PADDING_BYTES(0x14); // SHA256-HMAC
};
static_assert(sizeof(ModelInfo) == 0x40, "ModelInfo is an invalid size");
@ -105,11 +140,21 @@ public:
struct AmiiboFile {
std::array<u8, 10> uuid;
INSERT_PADDING_BYTES(0x4); // Compability container
INSERT_PADDING_BYTES(0x46);
ModelInfo model_info;
u16 uuid_lock; // Must be 0F E0
u32 compability_container; // Must be F1 10 FF EE
u16 crypto_init; // Must be A5 XX
u16 write_count; // Number of times the amiibo has been written?
INSERT_PADDING_BYTES(0x20); // System crypts
INSERT_PADDING_BYTES(0x20); // SHA256-(HMAC?) hash
ModelInfo model_info; // This struct is bigger than documentation
INSERT_PADDING_BYTES(0xC); // SHA256-HMAC
INSERT_PADDING_BYTES(0x114); // section 1 encrypted buffer
INSERT_PADDING_BYTES(0x54); // section 2 encrypted buffer
u32 tag_dynamic_lock; // Must be 01 00 0F XX
u32 tag_CFG0; // Must be 00 00 00 04
u32 tag_CFG1; // Must be 50 00 00 00
};
static_assert(sizeof(AmiiboFile) == 0x94, "AmiiboFile is an invalid size");
static_assert(sizeof(AmiiboFile) == 0x214, "AmiiboFile is an invalid size");
void CreateUserInterface(Kernel::HLERequestContext& ctx);
bool LoadAmiibo(const std::vector<u8>& buffer);
@ -118,7 +163,7 @@ public:
void Initialize();
void Finalize();
ResultCode StartDetection();
ResultCode StartDetection(s32 protocol_);
ResultCode StopDetection();
ResultCode Mount();
ResultCode Unmount();
@ -144,6 +189,12 @@ public:
std::shared_ptr<Module> module;
private:
/// Validates that the amiibo file is not corrupted
bool IsAmiiboValid() const;
bool AmiiboApplicationDataExist(u32 access_id) const;
const std::vector<u8> LoadAmiiboApplicationData(u32 access_id) const;
void SaveAmiiboApplicationData(u32 access_id, const std::vector<u8>& data) const;
const Core::HID::NpadIdType npad_id;
DeviceState device_state{DeviceState::Unaviable};
@ -151,7 +202,7 @@ public:
Kernel::KEvent* activate_event;
Kernel::KEvent* deactivate_event;
AmiiboFile amiibo{};
u16 write_counter{};
s32 protocol;
bool is_application_area_initialized{};
u32 application_area_id;
std::vector<u8> application_area_data;