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-rw-r--r--src/core/hle/service/nfp/amiibo_crypto.cpp4
-rw-r--r--src/core/hle/service/nfp/amiibo_crypto.h3
-rw-r--r--src/core/hle/service/nfp/nfp_device.cpp34
-rw-r--r--src/core/hle/service/nfp/nfp_device.h1
-rw-r--r--src/core/hle/service/nfp/nfp_types.h3
5 files changed, 37 insertions, 8 deletions
diff --git a/src/core/hle/service/nfp/amiibo_crypto.cpp b/src/core/hle/service/nfp/amiibo_crypto.cpp
index bba862fb2..a3622e792 100644
--- a/src/core/hle/service/nfp/amiibo_crypto.cpp
+++ b/src/core/hle/service/nfp/amiibo_crypto.cpp
@@ -70,6 +70,10 @@ bool IsAmiiboValid(const EncryptedNTAG215File& ntag_file) {
return true;
}
+bool IsAmiiboValid(const NTAG215File& ntag_file) {
+ return IsAmiiboValid(EncodedDataToNfcData(ntag_file));
+}
+
NTAG215File NfcDataToEncodedData(const EncryptedNTAG215File& nfc_data) {
NTAG215File encoded_data{};
diff --git a/src/core/hle/service/nfp/amiibo_crypto.h b/src/core/hle/service/nfp/amiibo_crypto.h
index c9fd67a39..f6208ee6b 100644
--- a/src/core/hle/service/nfp/amiibo_crypto.h
+++ b/src/core/hle/service/nfp/amiibo_crypto.h
@@ -60,6 +60,9 @@ static_assert(sizeof(DerivedKeys) == 0x30, "DerivedKeys is an invalid size");
/// Validates that the amiibo file is not corrupted
bool IsAmiiboValid(const EncryptedNTAG215File& ntag_file);
+/// Validates that the amiibo file is not corrupted
+bool IsAmiiboValid(const NTAG215File& ntag_file);
+
/// Converts from encrypted file format to encoded file format
NTAG215File NfcDataToEncodedData(const EncryptedNTAG215File& nfc_data);
diff --git a/src/core/hle/service/nfp/nfp_device.cpp b/src/core/hle/service/nfp/nfp_device.cpp
index 5990e1473..607e70968 100644
--- a/src/core/hle/service/nfp/nfp_device.cpp
+++ b/src/core/hle/service/nfp/nfp_device.cpp
@@ -121,7 +121,16 @@ bool NfpDevice::LoadAmiibo(std::span<const u8> data) {
// TODO: Filter by allowed_protocols here
- memcpy(&encrypted_tag_data, data.data(), sizeof(EncryptedNTAG215File));
+ memcpy(&tag_data, data.data(), sizeof(EncryptedNTAG215File));
+ is_plain_amiibo = AmiiboCrypto::IsAmiiboValid(tag_data);
+
+ if (is_plain_amiibo) {
+ encrypted_tag_data = AmiiboCrypto::EncodedDataToNfcData(tag_data);
+ LOG_INFO(Service_NFP, "Using plain amiibo");
+ } else {
+ tag_data = {};
+ memcpy(&encrypted_tag_data, data.data(), sizeof(EncryptedNTAG215File));
+ }
device_state = DeviceState::TagFound;
deactivate_event->GetReadableEvent().Clear();
@@ -232,13 +241,17 @@ Result NfpDevice::Flush() {
tag_data.write_counter++;
- if (!AmiiboCrypto::EncodeAmiibo(tag_data, encrypted_tag_data)) {
- LOG_ERROR(Service_NFP, "Failed to encode data");
- return WriteAmiiboFailed;
- }
+ std::vector<u8> data(sizeof(EncryptedNTAG215File));
+ if (is_plain_amiibo) {
+ memcpy(data.data(), &tag_data, sizeof(tag_data));
+ } else {
+ if (!AmiiboCrypto::EncodeAmiibo(tag_data, encrypted_tag_data)) {
+ LOG_ERROR(Service_NFP, "Failed to encode data");
+ return WriteAmiiboFailed;
+ }
- std::vector<u8> data(sizeof(encrypted_tag_data));
- memcpy(data.data(), &encrypted_tag_data, sizeof(encrypted_tag_data));
+ memcpy(data.data(), &encrypted_tag_data, sizeof(encrypted_tag_data));
+ }
if (!npad_device->WriteNfc(data)) {
LOG_ERROR(Service_NFP, "Error writing to file");
@@ -256,6 +269,13 @@ Result NfpDevice::Mount(MountTarget mount_target_) {
return WrongDeviceState;
}
+ // The loaded amiibo is not encrypted
+ if (is_plain_amiibo) {
+ device_state = DeviceState::TagMounted;
+ mount_target = mount_target_;
+ return ResultSuccess;
+ }
+
if (!AmiiboCrypto::IsAmiiboValid(encrypted_tag_data)) {
LOG_ERROR(Service_NFP, "Not an amiibo");
return NotAnAmiibo;
diff --git a/src/core/hle/service/nfp/nfp_device.h b/src/core/hle/service/nfp/nfp_device.h
index 27122e86e..7f963730d 100644
--- a/src/core/hle/service/nfp/nfp_device.h
+++ b/src/core/hle/service/nfp/nfp_device.h
@@ -95,6 +95,7 @@ private:
bool is_initalized{};
bool is_data_moddified{};
bool is_app_area_open{};
+ bool is_plain_amiibo{};
TagProtocol allowed_protocols{};
s64 current_posix_time{};
MountTarget mount_target{MountTarget::None};
diff --git a/src/core/hle/service/nfp/nfp_types.h b/src/core/hle/service/nfp/nfp_types.h
index b3599a513..70c878552 100644
--- a/src/core/hle/service/nfp/nfp_types.h
+++ b/src/core/hle/service/nfp/nfp_types.h
@@ -309,7 +309,8 @@ struct EncryptedNTAG215File {
u32 CFG1; // Defines number of verification attempts
NTAG215Password password; // Password data
};
-static_assert(sizeof(EncryptedNTAG215File) == 0x21C, "EncryptedNTAG215File is an invalid size");
+static_assert(sizeof(EncryptedNTAG215File) == sizeof(NTAG215File),
+ "EncryptedNTAG215File is an invalid size");
static_assert(std::is_trivially_copyable_v<EncryptedNTAG215File>,
"EncryptedNTAG215File must be trivially copyable.");