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nfp: Allow files without password data

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This commit is contained in:
german77 2022-02-13 11:59:47 -06:00
parent 6a1ad03153
commit b57d61010f
2 changed files with 25 additions and 10 deletions
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24
src/core/hle/service/nfp/nfp.cpp
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@ -479,25 +479,35 @@ void Module::Interface::CreateUserInterface(Kernel::HLERequestContext& ctx) {
}
bool Module::Interface::LoadAmiibo(const std::vector<u8>& buffer) {
if (buffer.size() < sizeof(NTAG215File)) {
LOG_ERROR(Service_NFP, "Wrong file size");
return false;
}
if (device_state != DeviceState::SearchingForTag) {
LOG_ERROR(Service_NFP, "Game is not looking for amiibos, current state {}", device_state);
return false;
}
constexpr auto tag_size = sizeof(NTAG215File);
constexpr auto tag_size_without_password = sizeof(NTAG215File) - sizeof(NTAG215Password);
std::vector<u8> amiibo_buffer = buffer;
if (amiibo_buffer.size() < tag_size_without_password) {
LOG_ERROR(Service_NFP, "Wrong file size {}", buffer.size());
return false;
}
// Ensure it has the correct size
if (amiibo_buffer.size() != tag_size) {
amiibo_buffer.resize(tag_size, 0);
}
LOG_INFO(Service_NFP, "Amiibo detected");
std::memcpy(&tag_data, buffer.data(), sizeof(tag_data));
std::memcpy(&tag_data, buffer.data(), tag_size);
if (!IsAmiiboValid()) {
return false;
}
// This value can't be dumped from a tag. Generate it
tag_data.PWD = GetTagPassword(tag_data.uuid);
tag_data.password.PWD = GetTagPassword(tag_data.uuid);
device_state = DeviceState::TagFound;
activate_event->GetWritableEvent().Signal();

11
src/core/hle/service/nfp/nfp.h
View file

@ -153,6 +153,13 @@ public:
};
static_assert(sizeof(EncryptedAmiiboFile) == 0x1F8, "AmiiboFile is an invalid size");
struct NTAG215Password {
u32 PWD; // Password to allow write access
u16 PACK; // Password acknowledge reply
u16 RFUI; // Reserved for future use
};
static_assert(sizeof(NTAG215Password) == 0x8, "NTAG215Password is an invalid size");
struct NTAG215File {
TagUuid uuid; // Unique serial number
u16 lock_bytes; // Set defined pages as read only
@ -161,9 +168,7 @@ public:
u32 dynamic_lock; // Dynamic lock
u32 CFG0; // Defines memory protected by password
u32 CFG1; // Defines number of verification attempts
u32 PWD; // Password to allow write access
u16 PACK; // Password acknowledge reply
u16 RFUI; // Reserved for future use
NTAG215Password password; // Password data
};
static_assert(sizeof(NTAG215File) == 0x21C, "NTAG215File is an invalid size");