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service: nfc: Add backup support

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This commit is contained in:
german77 2023-06-04 15:50:44 -06:00 committed by Narr the Reg
parent 238e46ec93
commit 107aa52cdb
10 changed files with 184 additions and 39 deletions
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1
src/common/fs/fs_paths.h
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@ -10,6 +10,7 @@
// Sub-directories contained within a yuzu data directory
#define AMIIBO_DIR "amiibo"
#define CACHE_DIR "cache"
#define CONFIG_DIR "config"
#define DUMP_DIR "dump"

1
src/common/fs/path_util.cpp
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@ -114,6 +114,7 @@ public:
#endif
GenerateYuzuPath(YuzuPath::YuzuDir, yuzu_path);
GenerateYuzuPath(YuzuPath::AmiiboDir, yuzu_path / AMIIBO_DIR);
GenerateYuzuPath(YuzuPath::CacheDir, yuzu_path_cache);
GenerateYuzuPath(YuzuPath::ConfigDir, yuzu_path_config);
GenerateYuzuPath(YuzuPath::DumpDir, yuzu_path / DUMP_DIR);

1
src/common/fs/path_util.h
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@ -12,6 +12,7 @@ namespace Common::FS {
enum class YuzuPath {
YuzuDir, // Where yuzu stores its data.
AmiiboDir, // Where Amiibo backups are stored.
CacheDir, // Where cached filesystem data is stored.
ConfigDir, // Where config files are stored.
DumpDir, // Where dumped data is stored.

160
src/core/hle/service/nfc/common/device.cpp
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@ -12,6 +12,11 @@
#pragma warning(pop)
#endif
#include <fmt/format.h>
#include "common/fs/file.h"
#include "common/fs/fs.h"
#include "common/fs/path_util.h"
#include "common/input.h"
#include "common/logging/log.h"
#include "common/string_util.h"
@ -136,7 +141,7 @@ bool NfcDevice::LoadNfcTag(std::span<const u8> data) {
if (!NFP::AmiiboCrypto::IsKeyAvailable()) {
LOG_INFO(Service_NFC, "Loading amiibo without keys");
memcpy(&encrypted_tag_data, data.data(), sizeof(NFP::EncryptedNTAG215File));
BuildAmiiboWithoutKeys();
BuildAmiiboWithoutKeys(tag_data, encrypted_tag_data);
is_plain_amiibo = true;
is_write_protected = true;
return true;
@ -366,16 +371,25 @@ Result NfcDevice::Mount(NFP::ModelType model_type, NFP::MountTarget mount_target
// The loaded amiibo is not encrypted
if (is_plain_amiibo) {
std::vector<u8> data(sizeof(NFP::NTAG215File));
memcpy(data.data(), &tag_data, sizeof(tag_data));
WriteBackupData(tag_data.uid, data);
device_state = DeviceState::TagMounted;
mount_target = mount_target_;
return ResultSuccess;
}
if (!NFP::AmiiboCrypto::DecodeAmiibo(encrypted_tag_data, tag_data)) {
LOG_ERROR(Service_NFP, "Can't decode amiibo {}", device_state);
return ResultCorruptedData;
bool has_backup = HasBackup(encrypted_tag_data.uuid.uid).IsSuccess();
LOG_ERROR(Service_NFP, "Can't decode amiibo, has_backup= {}", has_backup);
return has_backup ? ResultCorruptedDataWithBackup : ResultCorruptedData;
}
std::vector<u8> data(sizeof(NFP::EncryptedNTAG215File));
memcpy(data.data(), &encrypted_tag_data, sizeof(encrypted_tag_data));
WriteBackupData(encrypted_tag_data.uuid.uid, data);
device_state = DeviceState::TagMounted;
mount_target = mount_target_;
return ResultSuccess;
@ -470,6 +484,7 @@ Result NfcDevice::FlushWithBreak(NFP::BreakType break_type) {
std::vector<u8> data(sizeof(NFP::EncryptedNTAG215File));
if (is_plain_amiibo) {
memcpy(data.data(), &tag_data, sizeof(tag_data));
WriteBackupData(tag_data.uid, data);
} else {
if (!NFP::AmiiboCrypto::EncodeAmiibo(tag_data, encrypted_tag_data)) {
LOG_ERROR(Service_NFP, "Failed to encode data");
@ -477,6 +492,7 @@ Result NfcDevice::FlushWithBreak(NFP::BreakType break_type) {
}
memcpy(data.data(), &encrypted_tag_data, sizeof(encrypted_tag_data));
WriteBackupData(encrypted_tag_data.uuid.uid, data);
}
if (!npad_device->WriteNfc(data)) {
@ -488,7 +504,7 @@ Result NfcDevice::FlushWithBreak(NFP::BreakType break_type) {
}
Result NfcDevice::Restore() {
if (device_state != DeviceState::TagMounted) {
if (device_state != DeviceState::TagFound) {
LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
if (device_state == DeviceState::TagRemoved) {
return ResultTagRemoved;
@ -496,13 +512,59 @@ Result NfcDevice::Restore() {
return ResultWrongDeviceState;
}
if (mount_target == NFP::MountTarget::None || mount_target == NFP::MountTarget::Rom) {
LOG_ERROR(Service_NFC, "Amiibo is read only", device_state);
return ResultWrongDeviceState;
NFC::TagInfo tag_info{};
std::array<u8, sizeof(NFP::EncryptedNTAG215File)> data{};
Result result = GetTagInfo(tag_info, false);
if (result.IsError()) {
return result;
}
// TODO: Load amiibo from backup on system
LOG_ERROR(Service_NFP, "Not Implemented");
result = ReadBackupData(tag_info.uuid, data);
if (result.IsError()) {
return result;
}
NFP::NTAG215File temporary_tag_data{};
NFP::EncryptedNTAG215File temporary_encrypted_tag_data{};
// Fallback for encrypted amiibos without keys
if (is_write_protected) {
return ResultWriteAmiiboFailed;
}
// Fallback for plain amiibos
if (is_plain_amiibo) {
LOG_INFO(Service_NFP, "Restoring backup of plain amiibo");
memcpy(&temporary_tag_data, data.data(), sizeof(NFP::EncryptedNTAG215File));
temporary_encrypted_tag_data = NFP::AmiiboCrypto::EncodedDataToNfcData(temporary_tag_data);
}
if (!is_plain_amiibo) {
LOG_INFO(Service_NFP, "Restoring backup of encrypted amiibo");
temporary_tag_data = {};
memcpy(&temporary_encrypted_tag_data, data.data(), sizeof(NFP::EncryptedNTAG215File));
}
if (!NFP::AmiiboCrypto::IsAmiiboValid(temporary_encrypted_tag_data)) {
return ResultNotAnAmiibo;
}
if (!is_plain_amiibo) {
if (!NFP::AmiiboCrypto::DecodeAmiibo(temporary_encrypted_tag_data, temporary_tag_data)) {
LOG_ERROR(Service_NFP, "Can't decode amiibo");
return ResultCorruptedData;
}
}
// Overwrite tag contents with backup and mount the tag
tag_data = temporary_tag_data;
encrypted_tag_data = temporary_encrypted_tag_data;
device_state = DeviceState::TagMounted;
mount_target = NFP::MountTarget::All;
is_data_moddified = true;
return ResultSuccess;
}
@ -1132,13 +1194,69 @@ Result NfcDevice::BreakTag(NFP::BreakType break_type) {
return FlushWithBreak(break_type);
}
Result NfcDevice::ReadBackupData(std::span<u8> data) const {
// Not implemented
Result NfcDevice::HasBackup(const NFC::UniqueSerialNumber& uid) const {
constexpr auto backup_dir = "backup";
const auto yuzu_amiibo_dir = Common::FS::GetYuzuPath(Common::FS::YuzuPath::AmiiboDir);
const auto file_name = fmt::format("{0:02x}.bin", fmt::join(uid, ""));
if (!Common::FS::Exists(yuzu_amiibo_dir / backup_dir / file_name)) {
return ResultUnableToAccessBackupFile;
}
return ResultSuccess;
}
Result NfcDevice::WriteBackupData(std::span<const u8> data) {
// Not implemented
Result NfcDevice::ReadBackupData(const NFC::UniqueSerialNumber& uid, std::span<u8> data) const {
constexpr auto backup_dir = "backup";
const auto yuzu_amiibo_dir = Common::FS::GetYuzuPath(Common::FS::YuzuPath::AmiiboDir);
const auto file_name = fmt::format("{0:02x}.bin", fmt::join(uid, ""));
const Common::FS::IOFile keys_file{yuzu_amiibo_dir / backup_dir / file_name,
Common::FS::FileAccessMode::Read,
Common::FS::FileType::BinaryFile};
if (!keys_file.IsOpen()) {
LOG_ERROR(Service_NFP, "Failed to open amiibo backup");
return ResultUnableToAccessBackupFile;
}
if (keys_file.Read(data) != data.size()) {
LOG_ERROR(Service_NFP, "Failed to read amiibo backup");
return ResultUnableToAccessBackupFile;
}
return ResultSuccess;
}
Result NfcDevice::WriteBackupData(const NFC::UniqueSerialNumber& uid, std::span<const u8> data) {
constexpr auto backup_dir = "backup";
const auto yuzu_amiibo_dir = Common::FS::GetYuzuPath(Common::FS::YuzuPath::AmiiboDir);
const auto file_name = fmt::format("{0:02x}.bin", fmt::join(uid, ""));
if (HasBackup(uid).IsError()) {
if (!Common::FS::CreateDir(yuzu_amiibo_dir / backup_dir)) {
return ResultBackupPathAlreadyExist;
}
if (!Common::FS::NewFile(yuzu_amiibo_dir / backup_dir / file_name)) {
return ResultBackupPathAlreadyExist;
}
}
const Common::FS::IOFile keys_file{yuzu_amiibo_dir / backup_dir / file_name,
Common::FS::FileAccessMode::ReadWrite,
Common::FS::FileType::BinaryFile};
if (!keys_file.IsOpen()) {
LOG_ERROR(Service_NFP, "Failed to open amiibo backup");
return ResultUnableToAccessBackupFile;
}
if (keys_file.Write(data) != data.size()) {
LOG_ERROR(Service_NFP, "Failed to write amiibo backup");
return ResultUnableToAccessBackupFile;
}
return ResultSuccess;
}
@ -1177,7 +1295,8 @@ NFP::AmiiboName NfcDevice::GetAmiiboName(const NFP::AmiiboSettings& settings) co
return amiibo_name;
}
void NfcDevice::SetAmiiboName(NFP::AmiiboSettings& settings, const NFP::AmiiboName& amiibo_name) {
void NfcDevice::SetAmiiboName(NFP::AmiiboSettings& settings,
const NFP::AmiiboName& amiibo_name) const {
std::array<char16_t, NFP::amiibo_name_length> settings_amiibo_name{};
// Convert from utf8 to utf16
@ -1258,22 +1377,23 @@ void NfcDevice::UpdateRegisterInfoCrc() {
tag_data.register_info_crc = crc.checksum();
}
void NfcDevice::BuildAmiiboWithoutKeys() {
void NfcDevice::BuildAmiiboWithoutKeys(NFP::NTAG215File& stubbed_tag_data,
const NFP::EncryptedNTAG215File& encrypted_file) const {
Service::Mii::MiiManager manager;
auto& settings = tag_data.settings;
auto& settings = stubbed_tag_data.settings;
tag_data = NFP::AmiiboCrypto::NfcDataToEncodedData(encrypted_tag_data);
stubbed_tag_data = NFP::AmiiboCrypto::NfcDataToEncodedData(encrypted_file);
// Common info
tag_data.write_counter = 0;
tag_data.amiibo_version = 0;
stubbed_tag_data.write_counter = 0;
stubbed_tag_data.amiibo_version = 0;
settings.write_date = GetAmiiboDate(GetCurrentPosixTime());
// Register info
SetAmiiboName(settings, {'y', 'u', 'z', 'u', 'A', 'm', 'i', 'i', 'b', 'o'});
settings.settings.font_region.Assign(0);
settings.init_date = GetAmiiboDate(GetCurrentPosixTime());
tag_data.owner_mii = manager.BuildFromStoreData(manager.BuildDefault(0));
stubbed_tag_data.owner_mii = manager.BuildFromStoreData(manager.BuildDefault(0));
// Admin info
settings.settings.amiibo_initialized.Assign(1);

10
src/core/hle/service/nfc/common/device.h
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@ -86,8 +86,9 @@ public:
Result GetAll(NFP::NfpData& data) const;
Result SetAll(const NFP::NfpData& data);
Result BreakTag(NFP::BreakType break_type);
Result ReadBackupData(std::span<u8> data) const;
Result WriteBackupData(std::span<const u8> data);
Result HasBackup(const NFC::UniqueSerialNumber& uid) const;
Result ReadBackupData(const NFC::UniqueSerialNumber& uid, std::span<u8> data) const;
Result WriteBackupData(const NFC::UniqueSerialNumber& uid, std::span<const u8> data);
Result WriteNtf(std::span<const u8> data);
u64 GetHandle() const;
@ -103,14 +104,15 @@ private:
void CloseNfcTag();
NFP::AmiiboName GetAmiiboName(const NFP::AmiiboSettings& settings) const;
void SetAmiiboName(NFP::AmiiboSettings& settings, const NFP::AmiiboName& amiibo_name);
void SetAmiiboName(NFP::AmiiboSettings& settings, const NFP::AmiiboName& amiibo_name) const;
NFP::AmiiboDate GetAmiiboDate(s64 posix_time) const;
u64 GetCurrentPosixTime() const;
u64 RemoveVersionByte(u64 application_id) const;
void UpdateSettingsCrc();
void UpdateRegisterInfoCrc();
void BuildAmiiboWithoutKeys();
void BuildAmiiboWithoutKeys(NFP::NTAG215File& stubbed_tag_data,
const NFP::EncryptedNTAG215File& encrypted_file) const;
bool is_controller_set{};
int callback_key;

14
src/core/hle/service/nfc/common/device_manager.cpp
View File

@ -543,9 +543,14 @@ Result DeviceManager::ReadBackupData(u64 device_handle, std::span<u8> data) cons
std::shared_ptr<NfcDevice> device = nullptr;
auto result = GetDeviceHandle(device_handle, device);
NFC::TagInfo tag_info{};
if (result.IsSuccess()) {
result = device->ReadBackupData(data);
result = device->GetTagInfo(tag_info, false);
}
if (result.IsSuccess()) {
result = device->ReadBackupData(tag_info.uuid, data);
result = VerifyDeviceResult(device, result);
}
@ -557,9 +562,14 @@ Result DeviceManager::WriteBackupData(u64 device_handle, std::span<const u8> dat
std::shared_ptr<NfcDevice> device = nullptr;
auto result = GetDeviceHandle(device_handle, device);
NFC::TagInfo tag_info{};
if (result.IsSuccess()) {
result = device->WriteBackupData(data);
result = device->GetTagInfo(tag_info, false);
}
if (result.IsSuccess()) {
result = device->WriteBackupData(tag_info.uuid, data);
result = VerifyDeviceResult(device, result);
}

8
src/core/hle/service/nfc/nfc_interface.cpp
View File

@ -302,7 +302,7 @@ Result NfcInterface::TranslateResultToServiceError(Result result) const {
return TranslateResultToNfp(result);
}
default:
if (result != ResultUnknown216) {
if (result != ResultBackupPathAlreadyExist) {
return result;
}
return ResultUnknown74;
@ -343,6 +343,9 @@ Result NfcInterface::TranslateResultToNfp(Result result) const {
if (result == ResultApplicationAreaIsNotInitialized) {
return NFP::ResultApplicationAreaIsNotInitialized;
}
if (result == ResultCorruptedDataWithBackup) {
return NFP::ResultCorruptedDataWithBackup;
}
if (result == ResultCorruptedData) {
return NFP::ResultCorruptedData;
}
@ -355,6 +358,9 @@ Result NfcInterface::TranslateResultToNfp(Result result) const {
if (result == ResultNotAnAmiibo) {
return NFP::ResultNotAnAmiibo;
}
if (result == ResultUnableToAccessBackupFile) {
return NFP::ResultUnableToAccessBackupFile;
}
LOG_WARNING(Service_NFC, "Result conversion not handled");
return result;
}

20
src/core/hle/service/nfc/nfc_result.h
View File

@ -9,20 +9,22 @@ namespace Service::NFC {
constexpr Result ResultDeviceNotFound(ErrorModule::NFC, 64);
constexpr Result ResultInvalidArgument(ErrorModule::NFC, 65);
constexpr Result ResultWrongApplicationAreaSize(ErrorModule::NFP, 68);
constexpr Result ResultWrongApplicationAreaSize(ErrorModule::NFC, 68);
constexpr Result ResultWrongDeviceState(ErrorModule::NFC, 73);
constexpr Result ResultUnknown74(ErrorModule::NFC, 74);
constexpr Result ResultUnknown76(ErrorModule::NFC, 76);
constexpr Result ResultNfcNotInitialized(ErrorModule::NFC, 77);
constexpr Result ResultNfcDisabled(ErrorModule::NFC, 80);
constexpr Result ResultWriteAmiiboFailed(ErrorModule::NFP, 88);
constexpr Result ResultWriteAmiiboFailed(ErrorModule::NFC, 88);
constexpr Result ResultTagRemoved(ErrorModule::NFC, 97);
constexpr Result ResultRegistrationIsNotInitialized(ErrorModule::NFP, 120);
constexpr Result ResultApplicationAreaIsNotInitialized(ErrorModule::NFP, 128);
constexpr Result ResultCorruptedData(ErrorModule::NFP, 144);
constexpr Result ResultWrongApplicationAreaId(ErrorModule::NFP, 152);
constexpr Result ResultApplicationAreaExist(ErrorModule::NFP, 168);
constexpr Result ResultNotAnAmiibo(ErrorModule::NFP, 178);
constexpr Result ResultUnknown216(ErrorModule::NFC, 216);
constexpr Result ResultUnableToAccessBackupFile(ErrorModule::NFC, 113);
constexpr Result ResultRegistrationIsNotInitialized(ErrorModule::NFC, 120);
constexpr Result ResultApplicationAreaIsNotInitialized(ErrorModule::NFC, 128);
constexpr Result ResultCorruptedDataWithBackup(ErrorModule::NFC, 136);
constexpr Result ResultCorruptedData(ErrorModule::NFC, 144);
constexpr Result ResultWrongApplicationAreaId(ErrorModule::NFC, 152);
constexpr Result ResultApplicationAreaExist(ErrorModule::NFC, 168);
constexpr Result ResultNotAnAmiibo(ErrorModule::NFC, 178);
constexpr Result ResultBackupPathAlreadyExist(ErrorModule::NFC, 216);
} // namespace Service::NFC

6
src/core/hle/service/nfp/nfp_interface.cpp
View File

@ -126,7 +126,7 @@ void Interface::Flush(HLERequestContext& ctx) {
void Interface::Restore(HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const auto device_handle{rp.Pop<u64>()};
LOG_WARNING(Service_NFP, "(STUBBED) called, device_handle={}", device_handle);
LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
auto result = GetManager()->Restore(device_handle);
result = TranslateResultToServiceError(result);
@ -394,7 +394,7 @@ void Interface::BreakTag(HLERequestContext& ctx) {
void Interface::ReadBackupData(HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const auto device_handle{rp.Pop<u64>()};
LOG_WARNING(Service_NFP, "(STUBBED) called, device_handle={}", device_handle);
LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
std::vector<u8> backup_data{};
auto result = GetManager()->ReadBackupData(device_handle, backup_data);
@ -412,7 +412,7 @@ void Interface::WriteBackupData(HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const auto device_handle{rp.Pop<u64>()};
const auto backup_data_buffer{ctx.ReadBuffer()};
LOG_WARNING(Service_NFP, "(STUBBED) called, device_handle={}", device_handle);
LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
auto result = GetManager()->WriteBackupData(device_handle, backup_data_buffer);
result = TranslateResultToServiceError(result);

2
src/core/hle/service/nfp/nfp_result.h
View File

@ -17,9 +17,11 @@ constexpr Result ResultWriteAmiiboFailed(ErrorModule::NFP, 88);
constexpr Result ResultTagRemoved(ErrorModule::NFP, 97);
constexpr Result ResultRegistrationIsNotInitialized(ErrorModule::NFP, 120);
constexpr Result ResultApplicationAreaIsNotInitialized(ErrorModule::NFP, 128);
constexpr Result ResultCorruptedDataWithBackup(ErrorModule::NFP, 136);
constexpr Result ResultCorruptedData(ErrorModule::NFP, 144);
constexpr Result ResultWrongApplicationAreaId(ErrorModule::NFP, 152);
constexpr Result ResultApplicationAreaExist(ErrorModule::NFP, 168);
constexpr Result ResultNotAnAmiibo(ErrorModule::NFP, 178);
constexpr Result ResultUnableToAccessBackupFile(ErrorModule::NFP, 200);
} // namespace Service::NFP