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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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71
src/core/hle/service/nfp/nfp.h
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@@ -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;