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Merge pull request #849 from DarkLordZach/xci 

XCI and Encrypted NCA Support
This commit is contained in:
bunnei 2018-08-04 14:33:11 -04:00 committed by GitHub
parent 13d6593753 13cdf1f159
commit 2b06301dbf
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
39 changed files with 1405 additions and 80 deletions
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7
.gitmodules vendored
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@ -25,6 +25,9 @@
[submodule "unicorn"]
path = externals/unicorn
url = https://github.com/yuzu-emu/unicorn
[submodule "mbedtls"]
path = externals/mbedtls
url = https://github.com/DarkLordZach/mbedtls
[submodule "opus"]
path = externals/opus
url = https://github.com/ogniK5377/opus.git
path = externals/opus
url = https://github.com/ogniK5377/opus.git

4
externals/CMakeLists.txt vendored
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@ -35,6 +35,10 @@ set(LZ4_BUNDLED_MODE ON)
add_subdirectory(lz4/contrib/cmake_unofficial)
target_include_directories(lz4_static INTERFACE ./lz4/lib)
# mbedtls
add_subdirectory(mbedtls)
target_include_directories(mbedtls PUBLIC ./mbedtls/include)
# MicroProfile
add_library(microprofile INTERFACE)
target_include_directories(microprofile INTERFACE ./microprofile)

1
externals/mbedtls vendored Submodule

@ -0,0 +1 @@
Subproject commit 06442b840ea62e2ceda0dc58f255cfff49fed5b6

1
src/common/common_paths.h
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@ -32,6 +32,7 @@
#define SDMC_DIR "sdmc"
#define NAND_DIR "nand"
#define SYSDATA_DIR "sysdata"
#define KEYS_DIR "keys"
#define LOG_DIR "log"
// Filenames

14
src/common/file_util.cpp
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@ -706,6 +706,7 @@ const std::string& GetUserPath(UserPath path, const std::string& new_path) {
paths.emplace(UserPath::SDMCDir, user_path + SDMC_DIR DIR_SEP);
paths.emplace(UserPath::NANDDir, user_path + NAND_DIR DIR_SEP);
paths.emplace(UserPath::SysDataDir, user_path + SYSDATA_DIR DIR_SEP);
paths.emplace(UserPath::KeysDir, user_path + KEYS_DIR DIR_SEP);
// TODO: Put the logs in a better location for each OS
paths.emplace(UserPath::LogDir, user_path + LOG_DIR DIR_SEP);
}
@ -736,6 +737,19 @@ const std::string& GetUserPath(UserPath path, const std::string& new_path) {
return paths[path];
}
std::string GetHactoolConfigurationPath() {
#ifdef _WIN32
PWSTR pw_local_path = nullptr;
if (SHGetKnownFolderPath(FOLDERID_Profile, 0, nullptr, &pw_local_path) != S_OK)
return "";
std::string local_path = Common::UTF16ToUTF8(pw_local_path);
CoTaskMemFree(pw_local_path);
return local_path + "\\.switch";
#else
return GetHomeDirectory() + "/.switch";
#endif
}
size_t WriteStringToFile(bool text_file, const std::string& str, const char* filename) {
return FileUtil::IOFile(filename, text_file ? "w" : "wb").WriteBytes(str.data(), str.size());
}

3
src/common/file_util.h
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@ -23,6 +23,7 @@ namespace FileUtil {
enum class UserPath {
CacheDir,
ConfigDir,
KeysDir,
LogDir,
NANDDir,
RootDir,
@ -125,6 +126,8 @@ bool SetCurrentDir(const std::string& directory);
// directory. To be used in "multi-user" mode (that is, installed).
const std::string& GetUserPath(UserPath path, const std::string& new_path = "");
std::string GetHactoolConfigurationPath();
// Returns the path to where the sys file are
std::string GetSysDirectory();

1
src/common/logging/backend.cpp
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@ -217,6 +217,7 @@ void FileBackend::Write(const Entry& entry) {
CLS(Input) \
CLS(Network) \
CLS(Loader) \
CLS(Crypto) \
CLS(WebService)
// GetClassName is a macro defined by Windows.h, grrr...

1
src/common/logging/log.h
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@ -102,6 +102,7 @@ enum class Class : ClassType {
Audio_DSP, ///< The HLE implementation of the DSP
Audio_Sink, ///< Emulator audio output backend
Loader, ///< ROM loader
Crypto, ///< Cryptographic engine/functions
Input, ///< Input emulation
Network, ///< Network emulation
WebService, ///< Interface to yuzu Web Services

14
src/core/CMakeLists.txt
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@ -12,6 +12,16 @@ add_library(core STATIC
core_timing.h
core_timing_util.cpp
core_timing_util.h
crypto/aes_util.cpp
crypto/aes_util.h
crypto/encryption_layer.cpp
crypto/encryption_layer.h
crypto/key_manager.cpp
crypto/key_manager.h
crypto/ctr_encryption_layer.cpp
crypto/ctr_encryption_layer.h
file_sys/card_image.cpp
file_sys/card_image.h
file_sys/content_archive.cpp
file_sys/content_archive.h
file_sys/control_metadata.cpp
@ -327,6 +337,8 @@ add_library(core STATIC
loader/nro.h
loader/nso.cpp
loader/nso.h
loader/xci.cpp
loader/xci.h
memory.cpp
memory.h
memory_hook.cpp
@ -346,7 +358,7 @@ add_library(core STATIC
create_target_directory_groups(core)
target_link_libraries(core PUBLIC common PRIVATE audio_core video_core)
target_link_libraries(core PUBLIC Boost::boost PRIVATE fmt lz4_static opus unicorn)
target_link_libraries(core PUBLIC Boost::boost PRIVATE fmt lz4_static mbedtls opus unicorn)
if (ARCHITECTURE_x86_64)
target_sources(core PRIVATE

12
src/core/core.cpp
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@ -99,8 +99,10 @@ System::ResultStatus System::Load(EmuWindow& emu_window, const std::string& file
static_cast<int>(system_mode.second));
switch (system_mode.second) {
case Loader::ResultStatus::ErrorEncrypted:
return ResultStatus::ErrorLoader_ErrorEncrypted;
case Loader::ResultStatus::ErrorMissingKeys:
return ResultStatus::ErrorLoader_ErrorMissingKeys;
case Loader::ResultStatus::ErrorDecrypting:
return ResultStatus::ErrorLoader_ErrorDecrypting;
case Loader::ResultStatus::ErrorInvalidFormat:
return ResultStatus::ErrorLoader_ErrorInvalidFormat;
case Loader::ResultStatus::ErrorUnsupportedArch:
@ -124,8 +126,10 @@ System::ResultStatus System::Load(EmuWindow& emu_window, const std::string& file
System::Shutdown();
switch (load_result) {
case Loader::ResultStatus::ErrorEncrypted:
return ResultStatus::ErrorLoader_ErrorEncrypted;
case Loader::ResultStatus::ErrorMissingKeys:
return ResultStatus::ErrorLoader_ErrorMissingKeys;
case Loader::ResultStatus::ErrorDecrypting:
return ResultStatus::ErrorLoader_ErrorDecrypting;
case Loader::ResultStatus::ErrorInvalidFormat:
return ResultStatus::ErrorLoader_ErrorInvalidFormat;
case Loader::ResultStatus::ErrorUnsupportedArch:

14
src/core/core.h
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@ -43,12 +43,14 @@ public:
/// Enumeration representing the return values of the System Initialize and Load process.
enum class ResultStatus : u32 {
Success, ///< Succeeded
ErrorNotInitialized, ///< Error trying to use core prior to initialization
ErrorGetLoader, ///< Error finding the correct application loader
ErrorSystemMode, ///< Error determining the system mode
ErrorLoader, ///< Error loading the specified application
ErrorLoader_ErrorEncrypted, ///< Error loading the specified application due to encryption
Success, ///< Succeeded
ErrorNotInitialized, ///< Error trying to use core prior to initialization
ErrorGetLoader, ///< Error finding the correct application loader
ErrorSystemMode, ///< Error determining the system mode
ErrorLoader, ///< Error loading the specified application
ErrorLoader_ErrorMissingKeys, ///< Error because the key/keys needed to run could not be
///< found.
ErrorLoader_ErrorDecrypting, ///< Error loading the specified application due to encryption
ErrorLoader_ErrorInvalidFormat, ///< Error loading the specified application due to an
/// invalid format
ErrorSystemFiles, ///< Error in finding system files

112
src/core/crypto/aes_util.cpp Normal file
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@ -0,0 +1,112 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <mbedtls/cipher.h>
#include "core/crypto/aes_util.h"
#include "core/crypto/key_manager.h"
namespace Core::Crypto {
static_assert(static_cast<size_t>(Mode::CTR) == static_cast<size_t>(MBEDTLS_CIPHER_AES_128_CTR),
"CTR has incorrect value.");
static_assert(static_cast<size_t>(Mode::ECB) == static_cast<size_t>(MBEDTLS_CIPHER_AES_128_ECB),
"ECB has incorrect value.");
static_assert(static_cast<size_t>(Mode::XTS) == static_cast<size_t>(MBEDTLS_CIPHER_AES_128_XTS),
"XTS has incorrect value.");
// Structure to hide mbedtls types from header file
struct CipherContext {
mbedtls_cipher_context_t encryption_context;
mbedtls_cipher_context_t decryption_context;
};
template <typename Key, size_t KeySize>
Crypto::AESCipher<Key, KeySize>::AESCipher(Key key, Mode mode)
: ctx(std::make_unique<CipherContext>()) {
mbedtls_cipher_init(&ctx->encryption_context);
mbedtls_cipher_init(&ctx->decryption_context);
ASSERT_MSG((mbedtls_cipher_setup(
&ctx->encryption_context,
mbedtls_cipher_info_from_type(static_cast<mbedtls_cipher_type_t>(mode))) ||
mbedtls_cipher_setup(
&ctx->decryption_context,
mbedtls_cipher_info_from_type(static_cast<mbedtls_cipher_type_t>(mode)))) == 0,
"Failed to initialize mbedtls ciphers.");
ASSERT(
!mbedtls_cipher_setkey(&ctx->encryption_context, key.data(), KeySize * 8, MBEDTLS_ENCRYPT));
ASSERT(
!mbedtls_cipher_setkey(&ctx->decryption_context, key.data(), KeySize * 8, MBEDTLS_DECRYPT));
//"Failed to set key on mbedtls ciphers.");
}
template <typename Key, size_t KeySize>
AESCipher<Key, KeySize>::~AESCipher() {
mbedtls_cipher_free(&ctx->encryption_context);
mbedtls_cipher_free(&ctx->decryption_context);
}
template <typename Key, size_t KeySize>
void AESCipher<Key, KeySize>::SetIV(std::vector<u8> iv) {
ASSERT_MSG((mbedtls_cipher_set_iv(&ctx->encryption_context, iv.data(), iv.size()) ||
mbedtls_cipher_set_iv(&ctx->decryption_context, iv.data(), iv.size())) == 0,
"Failed to set IV on mbedtls ciphers.");
}
template <typename Key, size_t KeySize>
void AESCipher<Key, KeySize>::Transcode(const u8* src, size_t size, u8* dest, Op op) {
size_t written = 0;
const auto context = op == Op::Encrypt ? &ctx->encryption_context : &ctx->decryption_context;
mbedtls_cipher_reset(context);
if (mbedtls_cipher_get_cipher_mode(context) == MBEDTLS_MODE_XTS) {
mbedtls_cipher_update(context, src, size, dest, &written);
if (written != size)
LOG_WARNING(Crypto, "Not all data was decrypted requested={:016X}, actual={:016X}.",
size, written);
} else {
const auto block_size = mbedtls_cipher_get_block_size(context);
for (size_t offset = 0; offset < size; offset += block_size) {
auto length = std::min<size_t>(block_size, size - offset);
mbedtls_cipher_update(context, src + offset, length, dest + offset, &written);
if (written != length)
LOG_WARNING(Crypto, "Not all data was decrypted requested={:016X}, actual={:016X}.",
length, written);
}
}
mbedtls_cipher_finish(context, nullptr, nullptr);
}
template <typename Key, size_t KeySize>
void AESCipher<Key, KeySize>::XTSTranscode(const u8* src, size_t size, u8* dest, size_t sector_id,
size_t sector_size, Op op) {
if (size % sector_size > 0) {
LOG_CRITICAL(Crypto, "Data size must be a multiple of sector size.");
return;
}
for (size_t i = 0; i < size; i += sector_size) {
SetIV(CalculateNintendoTweak(sector_id++));
Transcode<u8, u8>(src + i, sector_size, dest + i, op);
}
}
template <typename Key, size_t KeySize>
std::vector<u8> AESCipher<Key, KeySize>::CalculateNintendoTweak(size_t sector_id) {
std::vector<u8> out(0x10);
for (size_t i = 0xF; i <= 0xF; --i) {
out[i] = sector_id & 0xFF;
sector_id >>= 8;
}
return out;
}
template class AESCipher<Key128>;
template class AESCipher<Key256>;
} // namespace Core::Crypto

62
src/core/crypto/aes_util.h Normal file
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@ -0,0 +1,62 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <type_traits>
#include <vector>
#include "common/assert.h"
#include "core/file_sys/vfs.h"
namespace Core::Crypto {
struct CipherContext;
enum class Mode {
CTR = 11,
ECB = 2,
XTS = 70,
};
enum class Op {
Encrypt,
Decrypt,
};
template <typename Key, size_t KeySize = sizeof(Key)>
class AESCipher {
static_assert(std::is_same_v<Key, std::array<u8, KeySize>>, "Key must be std::array of u8.");
static_assert(KeySize == 0x10 || KeySize == 0x20, "KeySize must be 128 or 256.");
public:
AESCipher(Key key, Mode mode);
~AESCipher();
void SetIV(std::vector<u8> iv);
template <typename Source, typename Dest>
void Transcode(const Source* src, size_t size, Dest* dest, Op op) {
Transcode(reinterpret_cast<const u8*>(src), size, reinterpret_cast<u8*>(dest), op);
}
void Transcode(const u8* src, size_t size, u8* dest, Op op);
template <typename Source, typename Dest>
void XTSTranscode(const Source* src, size_t size, Dest* dest, size_t sector_id,
size_t sector_size, Op op) {
XTSTranscode(reinterpret_cast<const u8*>(src), size, reinterpret_cast<u8*>(dest), sector_id,
sector_size, op);
}
void XTSTranscode(const u8* src, size_t size, u8* dest, size_t sector_id, size_t sector_size,
Op op);
private:
std::unique_ptr<CipherContext> ctx;
static std::vector<u8> CalculateNintendoTweak(size_t sector_id);
};
} // namespace Core::Crypto

56
src/core/crypto/ctr_encryption_layer.cpp Normal file
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@ -0,0 +1,56 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstring>
#include "common/assert.h"
#include "core/crypto/ctr_encryption_layer.h"
namespace Core::Crypto {
CTREncryptionLayer::CTREncryptionLayer(FileSys::VirtualFile base_, Key128 key_, size_t base_offset)
: EncryptionLayer(std::move(base_)), base_offset(base_offset), cipher(key_, Mode::CTR),
iv(16, 0) {}
size_t CTREncryptionLayer::Read(u8* data, size_t length, size_t offset) const {
if (length == 0)
return 0;
const auto sector_offset = offset & 0xF;
if (sector_offset == 0) {
UpdateIV(base_offset + offset);
std::vector<u8> raw = base->ReadBytes(length, offset);
if (raw.size() != length)
return Read(data, raw.size(), offset);
cipher.Transcode(raw.data(), length, data, Op::Decrypt);
return length;
}
// offset does not fall on block boundary (0x10)
std::vector<u8> block = base->ReadBytes(0x10, offset - sector_offset);
UpdateIV(base_offset + offset - sector_offset);
cipher.Transcode(block.data(), block.size(), block.data(), Op::Decrypt);
size_t read = 0x10 - sector_offset;
if (length + sector_offset < 0x10) {
std::memcpy(data, block.data() + sector_offset, std::min<u64>(length, read));
return read;
}
std::memcpy(data, block.data() + sector_offset, read);
return read + Read(data + read, length - read, offset + read);
}
void CTREncryptionLayer::SetIV(const std::vector<u8>& iv_) {
const auto length = std::min(iv_.size(), iv.size());
iv.assign(iv_.cbegin(), iv_.cbegin() + length);
}
void CTREncryptionLayer::UpdateIV(size_t offset) const {
offset >>= 4;
for (size_t i = 0; i < 8; ++i) {
iv[16 - i - 1] = offset & 0xFF;
offset >>= 8;
}
cipher.SetIV(iv);
}
} // namespace Core::Crypto

33
src/core/crypto/ctr_encryption_layer.h Normal file
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@ -0,0 +1,33 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <vector>
#include "core/crypto/aes_util.h"
#include "core/crypto/encryption_layer.h"
#include "core/crypto/key_manager.h"
namespace Core::Crypto {
// Sits on top of a VirtualFile and provides CTR-mode AES decription.
class CTREncryptionLayer : public EncryptionLayer {
public:
CTREncryptionLayer(FileSys::VirtualFile base, Key128 key, size_t base_offset);
size_t Read(u8* data, size_t length, size_t offset) const override;
void SetIV(const std::vector<u8>& iv);
private:
size_t base_offset;
// Must be mutable as operations modify cipher contexts.
mutable AESCipher<Key128> cipher;
mutable std::vector<u8> iv;
void UpdateIV(size_t offset) const;
};
} // namespace Core::Crypto

42
src/core/crypto/encryption_layer.cpp Normal file
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@ -0,0 +1,42 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "core/crypto/encryption_layer.h"
namespace Core::Crypto {
EncryptionLayer::EncryptionLayer(FileSys::VirtualFile base_) : base(std::move(base_)) {}
std::string EncryptionLayer::GetName() const {
return base->GetName();
}
size_t EncryptionLayer::GetSize() const {
return base->GetSize();
}
bool EncryptionLayer::Resize(size_t new_size) {
return false;
}
std::shared_ptr<FileSys::VfsDirectory> EncryptionLayer::GetContainingDirectory() const {
return base->GetContainingDirectory();
}
bool EncryptionLayer::IsWritable() const {
return false;
}
bool EncryptionLayer::IsReadable() const {
return true;
}
size_t EncryptionLayer::Write(const u8* data, size_t length, size_t offset) {
return 0;
}
bool EncryptionLayer::Rename(std::string_view name) {
return base->Rename(name);
}
} // namespace Core::Crypto

32
src/core/crypto/encryption_layer.h Normal file
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@ -0,0 +1,32 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "core/file_sys/vfs.h"
namespace Core::Crypto {
// Basically non-functional class that implements all of the methods that are irrelevant to an
// EncryptionLayer. Reduces duplicate code.
class EncryptionLayer : public FileSys::VfsFile {
public:
explicit EncryptionLayer(FileSys::VirtualFile base);
size_t Read(u8* data, size_t length, size_t offset) const override = 0;
std::string GetName() const override;
size_t GetSize() const override;
bool Resize(size_t new_size) override;
std::shared_ptr<FileSys::VfsDirectory> GetContainingDirectory() const override;
bool IsWritable() const override;
bool IsReadable() const override;
size_t Write(const u8* data, size_t length, size_t offset) override;
bool Rename(std::string_view name) override;
protected:
FileSys::VirtualFile base;
};
} // namespace Core::Crypto

215
src/core/crypto/key_manager.cpp Normal file
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@ -0,0 +1,215 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include <fstream>
#include <locale>
#include <sstream>
#include <string_view>
#include <mbedtls/sha256.h>
#include "common/assert.h"
#include "common/common_paths.h"
#include "common/file_util.h"
#include "common/logging/log.h"
#include "core/crypto/key_manager.h"
#include "core/settings.h"
#include "key_manager.h"
namespace Core::Crypto {
static u8 ToHexNibble(char c1) {
if (c1 >= 65 && c1 <= 70)
return c1 - 55;
if (c1 >= 97 && c1 <= 102)
return c1 - 87;
if (c1 >= 48 && c1 <= 57)
return c1 - 48;
throw std::logic_error("Invalid hex digit");
}
template <size_t Size>
static std::array<u8, Size> HexStringToArray(std::string_view str) {
std::array<u8, Size> out{};
for (size_t i = 0; i < 2 * Size; i += 2) {
auto d1 = str[i];
auto d2 = str[i + 1];
out[i / 2] = (ToHexNibble(d1) << 4) | ToHexNibble(d2);
}
return out;
}
std::array<u8, 16> operator""_array16(const char* str, size_t len) {
if (len != 32)
throw std::logic_error("Not of correct size.");
return HexStringToArray<16>(str);
}
std::array<u8, 32> operator""_array32(const char* str, size_t len) {
if (len != 64)
throw std::logic_error("Not of correct size.");
return HexStringToArray<32>(str);
}
KeyManager::KeyManager() {
// Initialize keys
const std::string hactool_keys_dir = FileUtil::GetHactoolConfigurationPath();
const std::string yuzu_keys_dir = FileUtil::GetUserPath(FileUtil::UserPath::KeysDir);
if (Settings::values.use_dev_keys) {
dev_mode = true;
AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "dev.keys", false);
} else {
dev_mode = false;
AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "prod.keys", false);
}
AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "title.keys", true);
}
void KeyManager::LoadFromFile(std::string_view filename_, bool is_title_keys) {
const auto filename = std::string(filename_);
std::ifstream file(filename);
if (!file.is_open())
return;
std::string line;
while (std::getline(file, line)) {
std::vector<std::string> out;
std::stringstream stream(line);
std::string item;
while (std::getline(stream, item, '='))
out.push_back(std::move(item));
if (out.size() != 2)
continue;
out[0].erase(std::remove(out[0].begin(), out[0].end(), ' '), out[0].end());
out[1].erase(std::remove(out[1].begin(), out[1].end(), ' '), out[1].end());
if (is_title_keys) {
auto rights_id_raw = HexStringToArray<16>(out[0]);
u128 rights_id{};
std::memcpy(rights_id.data(), rights_id_raw.data(), rights_id_raw.size());
Key128 key = HexStringToArray<16>(out[1]);
SetKey(S128KeyType::Titlekey, key, rights_id[1], rights_id[0]);
} else {
std::transform(out[0].begin(), out[0].end(), out[0].begin(), ::tolower);
if (s128_file_id.find(out[0]) != s128_file_id.end()) {
const auto index = s128_file_id.at(out[0]);
Key128 key = HexStringToArray<16>(out[1]);
SetKey(index.type, key, index.field1, index.field2);
} else if (s256_file_id.find(out[0]) != s256_file_id.end()) {
const auto index = s256_file_id.at(out[0]);
Key256 key = HexStringToArray<32>(out[1]);
SetKey(index.type, key, index.field1, index.field2);
}
}
}
}
void KeyManager::AttemptLoadKeyFile(std::string_view dir1_, std::string_view dir2_,
std::string_view filename_, bool title) {
const std::string dir1(dir1_);
const std::string dir2(dir2_);
const std::string filename(filename_);
if (FileUtil::Exists(dir1 + DIR_SEP + filename))
LoadFromFile(dir1 + DIR_SEP + filename, title);
else if (FileUtil::Exists(dir2 + DIR_SEP + filename))
LoadFromFile(dir2 + DIR_SEP + filename, title);
}
bool KeyManager::HasKey(S128KeyType id, u64 field1, u64 field2) const {
return s128_keys.find({id, field1, field2}) != s128_keys.end();
}
bool KeyManager::HasKey(S256KeyType id, u64 field1, u64 field2) const {
return s256_keys.find({id, field1, field2}) != s256_keys.end();
}
Key128 KeyManager::GetKey(S128KeyType id, u64 field1, u64 field2) const {
if (!HasKey(id, field1, field2))
return {};
return s128_keys.at({id, field1, field2});
}
Key256 KeyManager::GetKey(S256KeyType id, u64 field1, u64 field2) const {
if (!HasKey(id, field1, field2))
return {};
return s256_keys.at({id, field1, field2});
}
void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) {
s128_keys[{id, field1, field2}] = key;
}
void KeyManager::SetKey(S256KeyType id, Key256 key, u64 field1, u64 field2) {
s256_keys[{id, field1, field2}] = key;
}
bool KeyManager::KeyFileExists(bool title) {
const std::string hactool_keys_dir = FileUtil::GetHactoolConfigurationPath();
const std::string yuzu_keys_dir = FileUtil::GetUserPath(FileUtil::UserPath::KeysDir);
if (title) {
return FileUtil::Exists(hactool_keys_dir + DIR_SEP + "title.keys") ||
FileUtil::Exists(yuzu_keys_dir + DIR_SEP + "title.keys");
}
if (Settings::values.use_dev_keys) {
return FileUtil::Exists(hactool_keys_dir + DIR_SEP + "dev.keys") ||
FileUtil::Exists(yuzu_keys_dir + DIR_SEP + "dev.keys");
}
return FileUtil::Exists(hactool_keys_dir + DIR_SEP + "prod.keys") ||
FileUtil::Exists(yuzu_keys_dir + DIR_SEP + "prod.keys");
}
const std::unordered_map<std::string, KeyIndex<S128KeyType>> KeyManager::s128_file_id = {
{"master_key_00", {S128KeyType::Master, 0, 0}},
{"master_key_01", {S128KeyType::Master, 1, 0}},
{"master_key_02", {S128KeyType::Master, 2, 0}},
{"master_key_03", {S128KeyType::Master, 3, 0}},
{"master_key_04", {S128KeyType::Master, 4, 0}},
{"package1_key_00", {S128KeyType::Package1, 0, 0}},
{"package1_key_01", {S128KeyType::Package1, 1, 0}},
{"package1_key_02", {S128KeyType::Package1, 2, 0}},
{"package1_key_03", {S128KeyType::Package1, 3, 0}},
{"package1_key_04", {S128KeyType::Package1, 4, 0}},
{"package2_key_00", {S128KeyType::Package2, 0, 0}},
{"package2_key_01", {S128KeyType::Package2, 1, 0}},
{"package2_key_02", {S128KeyType::Package2, 2, 0}},
{"package2_key_03", {S128KeyType::Package2, 3, 0}},
{"package2_key_04", {S128KeyType::Package2, 4, 0}},
{"titlekek_00", {S128KeyType::Titlekek, 0, 0}},
{"titlekek_01", {S128KeyType::Titlekek, 1, 0}},
{"titlekek_02", {S128KeyType::Titlekek, 2, 0}},
{"titlekek_03", {S128KeyType::Titlekek, 3, 0}},
{"titlekek_04", {S128KeyType::Titlekek, 4, 0}},
{"eticket_rsa_kek", {S128KeyType::ETicketRSAKek, 0, 0}},
{"key_area_key_application_00",
{S128KeyType::KeyArea, 0, static_cast<u64>(KeyAreaKeyType::Application)}},
{"key_area_key_application_01",
{S128KeyType::KeyArea, 1, static_cast<u64>(KeyAreaKeyType::Application)}},
{"key_area_key_application_02",
{S128KeyType::KeyArea, 2, static_cast<u64>(KeyAreaKeyType::Application)}},
{"key_area_key_application_03",
{S128KeyType::KeyArea, 3, static_cast<u64>(KeyAreaKeyType::Application)}},
{"key_area_key_application_04",
{S128KeyType::KeyArea, 4, static_cast<u64>(KeyAreaKeyType::Application)}},
{"key_area_key_ocean_00", {S128KeyType::KeyArea, 0, static_cast<u64>(KeyAreaKeyType::Ocean)}},
{"key_area_key_ocean_01", {S128KeyType::KeyArea, 1, static_cast<u64>(KeyAreaKeyType::Ocean)}},
{"key_area_key_ocean_02", {S128KeyType::KeyArea, 2, static_cast<u64>(KeyAreaKeyType::Ocean)}},
{"key_area_key_ocean_03", {S128KeyType::KeyArea, 3, static_cast<u64>(KeyAreaKeyType::Ocean)}},
{"key_area_key_ocean_04", {S128KeyType::KeyArea, 4, static_cast<u64>(KeyAreaKeyType::Ocean)}},
{"key_area_key_system_00", {S128KeyType::KeyArea, 0, static_cast<u64>(KeyAreaKeyType::System)}},
{"key_area_key_system_01", {S128KeyType::KeyArea, 1, static_cast<u64>(KeyAreaKeyType::System)}},
{"key_area_key_system_02", {S128KeyType::KeyArea, 2, static_cast<u64>(KeyAreaKeyType::System)}},
{"key_area_key_system_03", {S128KeyType::KeyArea, 3, static_cast<u64>(KeyAreaKeyType::System)}},
{"key_area_key_system_04", {S128KeyType::KeyArea, 4, static_cast<u64>(KeyAreaKeyType::System)}},
};
const std::unordered_map<std::string, KeyIndex<S256KeyType>> KeyManager::s256_file_id = {
{"header_key", {S256KeyType::Header, 0, 0}},
{"sd_card_save_key", {S256KeyType::SDSave, 0, 0}},
{"sd_card_nca_key", {S256KeyType::SDNCA, 0, 0}},
};
} // namespace Core::Crypto

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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <type_traits>
#include <unordered_map>
#include <vector>
#include <fmt/format.h>
#include "common/common_types.h"
namespace Core::Crypto {
using Key128 = std::array<u8, 0x10>;
using Key256 = std::array<u8, 0x20>;
using SHA256Hash = std::array<u8, 0x20>;
static_assert(sizeof(Key128) == 16, "Key128 must be 128 bytes big.");
static_assert(sizeof(Key256) == 32, "Key128 must be 128 bytes big.");
enum class S256KeyType : u64 {
Header, //
SDSave, //
SDNCA, //
};
enum class S128KeyType : u64 {
Master, // f1=crypto revision
Package1, // f1=crypto revision
Package2, // f1=crypto revision
Titlekek, // f1=crypto revision
ETicketRSAKek, //
KeyArea, // f1=crypto revision f2=type {app, ocean, system}
SDSeed, //
Titlekey, // f1=rights id LSB f2=rights id MSB
};
enum class KeyAreaKeyType : u8 {
Application,
Ocean,
System,
};
template <typename KeyType>
struct KeyIndex {
KeyType type;
u64 field1;
u64 field2;
std::string DebugInfo() const {
u8 key_size = 16;
if constexpr (std::is_same_v<KeyType, S256KeyType>)
key_size = 32;
return fmt::format("key_size={:02X}, key={:02X}, field1={:016X}, field2={:016X}", key_size,
static_cast<u8>(type), field1, field2);
}
};
// The following two (== and hash) are so KeyIndex can be a key in unordered_map
template <typename KeyType>
bool operator==(const KeyIndex<KeyType>& lhs, const KeyIndex<KeyType>& rhs) {
return std::tie(lhs.type, lhs.field1, lhs.field2) == std::tie(rhs.type, rhs.field1, rhs.field2);
}
template <typename KeyType>
bool operator!=(const KeyIndex<KeyType>& lhs, const KeyIndex<KeyType>& rhs) {
return !operator==(lhs, rhs);
}
} // namespace Core::Crypto
namespace std {
template <typename KeyType>
struct hash<Core::Crypto::KeyIndex<KeyType>> {
size_t operator()(const Core::Crypto::KeyIndex<KeyType>& k) const {
using std::hash;
return ((hash<u64>()(static_cast<u64>(k.type)) ^ (hash<u64>()(k.field1) << 1)) >> 1) ^
(hash<u64>()(k.field2) << 1);
}
};
} // namespace std
namespace Core::Crypto {
std::array<u8, 0x10> operator"" _array16(const char* str, size_t len);
std::array<u8, 0x20> operator"" _array32(const char* str, size_t len);
class KeyManager {
public:
KeyManager();
bool HasKey(S128KeyType id, u64 field1 = 0, u64 field2 = 0) const;
bool HasKey(S256KeyType id, u64 field1 = 0, u64 field2 = 0) const;
Key128 GetKey(S128KeyType id, u64 field1 = 0, u64 field2 = 0) const;
Key256 GetKey(S256KeyType id, u64 field1 = 0, u64 field2 = 0) const;
void SetKey(S128KeyType id, Key128 key, u64 field1 = 0, u64 field2 = 0);
void SetKey(S256KeyType id, Key256 key, u64 field1 = 0, u64 field2 = 0);
static bool KeyFileExists(bool title);
private:
std::unordered_map<KeyIndex<S128KeyType>, Key128> s128_keys;
std::unordered_map<KeyIndex<S256KeyType>, Key256> s256_keys;
bool dev_mode;
void LoadFromFile(std::string_view filename, bool is_title_keys);
void AttemptLoadKeyFile(std::string_view dir1, std::string_view dir2, std::string_view filename,
bool title);
static const std::unordered_map<std::string, KeyIndex<S128KeyType>> s128_file_id;
static const std::unordered_map<std::string, KeyIndex<S256KeyType>> s256_file_id;
};
} // namespace Core::Crypto

5
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@ -0,0 +1,5 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
namespace Crypto {} // namespace Crypto

20
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@ -0,0 +1,20 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "common/assert.h"
#include "core/file_sys/vfs.h"
#include "key_manager.h"
#include "mbedtls/cipher.h"
namespace Crypto {
typedef std::array<u8, 0x20> SHA256Hash;
inline SHA256Hash operator"" _HASH(const char* data, size_t len) {
if (len != 0x40)
return {};
}
} // namespace Crypto

149
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@ -0,0 +1,149 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include <string>
#include <core/loader/loader.h>
#include "core/file_sys/card_image.h"
#include "core/file_sys/partition_filesystem.h"
#include "core/file_sys/vfs_offset.h"
namespace FileSys {
XCI::XCI(VirtualFile file_) : file(std::move(file_)), partitions(0x4) {
if (file->ReadObject(&header) != sizeof(GamecardHeader)) {
status = Loader::ResultStatus::ErrorInvalidFormat;
return;
}
if (header.magic != Common::MakeMagic('H', 'E', 'A', 'D')) {
status = Loader::ResultStatus::ErrorInvalidFormat;
return;
}
PartitionFilesystem main_hfs(
std::make_shared<OffsetVfsFile>(file, header.hfs_size, header.hfs_offset));
if (main_hfs.GetStatus() != Loader::ResultStatus::Success) {
status = main_hfs.GetStatus();
return;
}
static constexpr std::array<const char*, 0x4> partition_names = {"update", "normal", "secure",
"logo"};
for (XCIPartition partition :
{XCIPartition::Update, XCIPartition::Normal, XCIPartition::Secure, XCIPartition::Logo}) {
auto raw = main_hfs.GetFile(partition_names[static_cast<size_t>(partition)]);
if (raw != nullptr)
partitions[static_cast<size_t>(partition)] = std::make_shared<PartitionFilesystem>(raw);
}
auto result = AddNCAFromPartition(XCIPartition::Secure);
if (result != Loader::ResultStatus::Success) {
status = result;
return;
}
result = AddNCAFromPartition(XCIPartition::Update);
if (result != Loader::ResultStatus::Success) {
status = result;
return;
}
result = AddNCAFromPartition(XCIPartition::Normal);
if (result != Loader::ResultStatus::Success) {
status = result;
return;
}
if (GetFormatVersion() >= 0x2) {
result = AddNCAFromPartition(XCIPartition::Logo);
if (result != Loader::ResultStatus::Success) {
status = result;
return;
}
}
status = Loader::ResultStatus::Success;
}
Loader::ResultStatus XCI::GetStatus() const {
return status;
}
VirtualDir XCI::GetPartition(XCIPartition partition) const {
return partitions[static_cast<size_t>(partition)];
}
VirtualDir XCI::GetSecurePartition() const {
return GetPartition(XCIPartition::Secure);
}
VirtualDir XCI::GetNormalPartition() const {
return GetPartition(XCIPartition::Normal);
}
VirtualDir XCI::GetUpdatePartition() const {
return GetPartition(XCIPartition::Update);
}
VirtualDir XCI::GetLogoPartition() const {
return GetPartition(XCIPartition::Logo);
}
std::shared_ptr<NCA> XCI::GetNCAByType(NCAContentType type) const {
const auto iter =
std::find_if(ncas.begin(), ncas.end(),
[type](const std::shared_ptr<NCA>& nca) { return nca->GetType() == type; });
return iter == ncas.end() ? nullptr : *iter;
}
VirtualFile XCI::GetNCAFileByType(NCAContentType type) const {
auto nca = GetNCAByType(type);
if (nca != nullptr)
return nca->GetBaseFile();
return nullptr;
}
std::vector<std::shared_ptr<VfsFile>> XCI::GetFiles() const {
return {};
}
std::vector<std::shared_ptr<VfsDirectory>> XCI::GetSubdirectories() const {
return std::vector<std::shared_ptr<VfsDirectory>>();
}
std::string XCI::GetName() const {
return file->GetName();
}
std::shared_ptr<VfsDirectory> XCI::GetParentDirectory() const {
return file->GetContainingDirectory();
}
bool XCI::ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) {
return false;
}
Loader::ResultStatus XCI::AddNCAFromPartition(XCIPartition part) {
if (partitions[static_cast<size_t>(part)] == nullptr) {
return Loader::ResultStatus::ErrorInvalidFormat;
}
for (const VirtualFile& file : partitions[static_cast<size_t>(part)]->GetFiles()) {
if (file->GetExtension() != "nca")
continue;
auto nca = std::make_shared<NCA>(file);
if (nca->GetStatus() == Loader::ResultStatus::Success)
ncas.push_back(std::move(nca));
}
return Loader::ResultStatus::Success;
}
u8 XCI::GetFormatVersion() const {
return GetLogoPartition() == nullptr ? 0x1 : 0x2;
}
} // namespace FileSys

96
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@ -0,0 +1,96 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <vector>
#include "common/common_types.h"
#include "common/swap.h"
#include "core/file_sys/content_archive.h"
#include "core/file_sys/vfs.h"
#include "core/loader/loader.h"
namespace FileSys {
enum class GamecardSize : u8 {
S_1GB = 0xFA,
S_2GB = 0xF8,
S_4GB = 0xF0,
S_8GB = 0xE0,
S_16GB = 0xE1,
S_32GB = 0xE2,
};
struct GamecardInfo {
std::array<u8, 0x70> data;
};
static_assert(sizeof(GamecardInfo) == 0x70, "GamecardInfo has incorrect size.");
struct GamecardHeader {
std::array<u8, 0x100> signature;
u32_le magic;
u32_le secure_area_start;
u32_le backup_area_start;
u8 kek_index;
GamecardSize size;
u8 header_version;
u8 flags;
u64_le package_id;
u64_le valid_data_end;
u128 info_iv;
u64_le hfs_offset;
u64_le hfs_size;
std::array<u8, 0x20> hfs_header_hash;
std::array<u8, 0x20> initial_data_hash;
u32_le secure_mode_flag;
u32_le title_key_flag;
u32_le key_flag;
u32_le normal_area_end;
GamecardInfo info;
};
static_assert(sizeof(GamecardHeader) == 0x200, "GamecardHeader has incorrect size.");
enum class XCIPartition : u8 { Update, Normal, Secure, Logo };
class XCI : public ReadOnlyVfsDirectory {
public:
explicit XCI(VirtualFile file);
Loader::ResultStatus GetStatus() const;
u8 GetFormatVersion() const;
VirtualDir GetPartition(XCIPartition partition) const;
VirtualDir GetSecurePartition() const;
VirtualDir GetNormalPartition() const;
VirtualDir GetUpdatePartition() const;
VirtualDir GetLogoPartition() const;
std::shared_ptr<NCA> GetNCAByType(NCAContentType type) const;
VirtualFile GetNCAFileByType(NCAContentType type) const;
std::vector<std::shared_ptr<VfsFile>> GetFiles() const override;
std::vector<std::shared_ptr<VfsDirectory>> GetSubdirectories() const override;
std::string GetName() const override;
std::shared_ptr<VfsDirectory> GetParentDirectory() const override;
protected:
bool ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) override;
private:
Loader::ResultStatus AddNCAFromPartition(XCIPartition part);
VirtualFile file;
GamecardHeader header{};
Loader::ResultStatus status;
std::vector<VirtualDir> partitions;
std::vector<std::shared_ptr<NCA>> ncas;
};
} // namespace FileSys

193
src/core/file_sys/content_archive.cpp
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@ -4,12 +4,14 @@
#include <algorithm>
#include <utility>
#include <boost/optional.hpp>
#include "common/logging/log.h"
#include "core/crypto/aes_util.h"
#include "core/crypto/ctr_encryption_layer.h"
#include "core/file_sys/content_archive.h"
#include "core/file_sys/romfs.h"
#include "core/file_sys/vfs_offset.h"
#include "core/loader/loader.h"
#include "romfs.h"
namespace FileSys {
@ -29,11 +31,19 @@ enum class NCASectionFilesystemType : u8 {
struct NCASectionHeaderBlock {
INSERT_PADDING_BYTES(3);
NCASectionFilesystemType filesystem_type;
u8 crypto_type;
NCASectionCryptoType crypto_type;
INSERT_PADDING_BYTES(3);
};
static_assert(sizeof(NCASectionHeaderBlock) == 0x8, "NCASectionHeaderBlock has incorrect size.");
struct NCASectionRaw {
NCASectionHeaderBlock header;
std::array<u8, 0x138> block_data;
std::array<u8, 0x8> section_ctr;
INSERT_PADDING_BYTES(0xB8);
};
static_assert(sizeof(NCASectionRaw) == 0x200, "NCASectionRaw has incorrect size.");
struct PFS0Superblock {
NCASectionHeaderBlock header_block;
std::array<u8, 0x20> hash;
@ -43,67 +53,170 @@ struct PFS0Superblock {
u64_le hash_table_size;
u64_le pfs0_header_offset;
u64_le pfs0_size;
INSERT_PADDING_BYTES(432);
INSERT_PADDING_BYTES(0x1B0);
};
static_assert(sizeof(PFS0Superblock) == 0x200, "PFS0Superblock has incorrect size.");
struct RomFSSuperblock {
NCASectionHeaderBlock header_block;
IVFCHeader ivfc;
INSERT_PADDING_BYTES(0x118);
};
static_assert(sizeof(RomFSSuperblock) == 0xE8, "RomFSSuperblock has incorrect size.");
static_assert(sizeof(RomFSSuperblock) == 0x200, "RomFSSuperblock has incorrect size.");
union NCASectionHeader {
NCASectionRaw raw;
PFS0Superblock pfs0;
RomFSSuperblock romfs;
};
static_assert(sizeof(NCASectionHeader) == 0x200, "NCASectionHeader has incorrect size.");
bool IsValidNCA(const NCAHeader& header) {
// TODO(DarkLordZach): Add NCA2/NCA0 support.
return header.magic == Common::MakeMagic('N', 'C', 'A', '3');
}
boost::optional<Core::Crypto::Key128> NCA::GetKeyAreaKey(NCASectionCryptoType type) const {
u8 master_key_id = header.crypto_type;
if (header.crypto_type_2 > master_key_id)
master_key_id = header.crypto_type_2;
if (master_key_id > 0)
--master_key_id;
if (!keys.HasKey(Core::Crypto::S128KeyType::KeyArea, master_key_id, header.key_index))
return boost::none;
std::vector<u8> key_area(header.key_area.begin(), header.key_area.end());
Core::Crypto::AESCipher<Core::Crypto::Key128> cipher(
keys.GetKey(Core::Crypto::S128KeyType::KeyArea, master_key_id, header.key_index),
Core::Crypto::Mode::ECB);
cipher.Transcode(key_area.data(), key_area.size(), key_area.data(), Core::Crypto::Op::Decrypt);
Core::Crypto::Key128 out;
if (type == NCASectionCryptoType::XTS)
std::copy(key_area.begin(), key_area.begin() + 0x10, out.begin());
else if (type == NCASectionCryptoType::CTR)
std::copy(key_area.begin() + 0x20, key_area.begin() + 0x30, out.begin());
else
LOG_CRITICAL(Crypto, "Called GetKeyAreaKey on invalid NCASectionCryptoType type={:02X}",
static_cast<u8>(type));
u128 out_128{};
memcpy(out_128.data(), out.data(), 16);
LOG_DEBUG(Crypto, "called with crypto_rev={:02X}, kak_index={:02X}, key={:016X}{:016X}",
master_key_id, header.key_index, out_128[1], out_128[0]);
return out;
}
VirtualFile NCA::Decrypt(NCASectionHeader header, VirtualFile in, u64 starting_offset) const {
if (!encrypted)
return in;
switch (header.raw.header.crypto_type) {
case NCASectionCryptoType::NONE:
LOG_DEBUG(Crypto, "called with mode=NONE");
return in;
case NCASectionCryptoType::CTR:
LOG_DEBUG(Crypto, "called with mode=CTR, starting_offset={:016X}", starting_offset);
{
const auto key = GetKeyAreaKey(NCASectionCryptoType::CTR);
if (key == boost::none)
return nullptr;
auto out = std::make_shared<Core::Crypto::CTREncryptionLayer>(
std::move(in), key.value(), starting_offset);
std::vector<u8> iv(16);
for (u8 i = 0; i < 8; ++i)
iv[i] = header.raw.section_ctr[0x8 - i - 1];
out->SetIV(iv);
return std::static_pointer_cast<VfsFile>(out);
}
case NCASectionCryptoType::XTS:
// TODO(DarkLordZach): Implement XTSEncryptionLayer and title key encryption.
default:
LOG_ERROR(Crypto, "called with unhandled crypto type={:02X}",
static_cast<u8>(header.raw.header.crypto_type));
return nullptr;
}
}
NCA::NCA(VirtualFile file_) : file(std::move(file_)) {
if (sizeof(NCAHeader) != file->ReadObject(&header))
LOG_CRITICAL(Loader, "File reader errored out during header read.");
LOG_ERROR(Loader, "File reader errored out during header read.");
encrypted = false;
if (!IsValidNCA(header)) {
status = Loader::ResultStatus::ErrorInvalidFormat;
return;
NCAHeader dec_header{};
Core::Crypto::AESCipher<Core::Crypto::Key256> cipher(
keys.GetKey(Core::Crypto::S256KeyType::Header), Core::Crypto::Mode::XTS);
cipher.XTSTranscode(&header, sizeof(NCAHeader), &dec_header, 0, 0x200,
Core::Crypto::Op::Decrypt);
if (IsValidNCA(dec_header)) {
header = dec_header;
encrypted = true;
} else {
if (!keys.HasKey(Core::Crypto::S256KeyType::Header))
status = Loader::ResultStatus::ErrorMissingKeys;
else
status = Loader::ResultStatus::ErrorDecrypting;
return;
}
}
std::ptrdiff_t number_sections =
const std::ptrdiff_t number_sections =
std::count_if(std::begin(header.section_tables), std::end(header.section_tables),
[](NCASectionTableEntry entry) { return entry.media_offset > 0; });
std::vector<NCASectionHeader> sections(number_sections);
const auto length_sections = SECTION_HEADER_SIZE * number_sections;
if (encrypted) {
auto raw = file->ReadBytes(length_sections, SECTION_HEADER_OFFSET);
Core::Crypto::AESCipher<Core::Crypto::Key256> cipher(
keys.GetKey(Core::Crypto::S256KeyType::Header), Core::Crypto::Mode::XTS);
cipher.XTSTranscode(raw.data(), length_sections, sections.data(), 2, SECTION_HEADER_SIZE,
Core::Crypto::Op::Decrypt);
} else {
file->ReadBytes(sections.data(), length_sections, SECTION_HEADER_OFFSET);
}
for (std::ptrdiff_t i = 0; i < number_sections; ++i) {
// Seek to beginning of this section.
NCASectionHeaderBlock block{};
if (sizeof(NCASectionHeaderBlock) !=
file->ReadObject(&block, SECTION_HEADER_OFFSET + i * SECTION_HEADER_SIZE))
LOG_CRITICAL(Loader, "File reader errored out during header read.");
if (block.filesystem_type == NCASectionFilesystemType::ROMFS) {
RomFSSuperblock sb{};
if (sizeof(RomFSSuperblock) !=
file->ReadObject(&sb, SECTION_HEADER_OFFSET + i * SECTION_HEADER_SIZE))
LOG_CRITICAL(Loader, "File reader errored out during header read.");
auto section = sections[i];
if (section.raw.header.filesystem_type == NCASectionFilesystemType::ROMFS) {
const size_t romfs_offset =
header.section_tables[i].media_offset * MEDIA_OFFSET_MULTIPLIER +
sb.ivfc.levels[IVFC_MAX_LEVEL - 1].offset;
const size_t romfs_size = sb.ivfc.levels[IVFC_MAX_LEVEL - 1].size;
files.emplace_back(std::make_shared<OffsetVfsFile>(file, romfs_size, romfs_offset));
romfs = files.back();
} else if (block.filesystem_type == NCASectionFilesystemType::PFS0) {
PFS0Superblock sb{};
// Seek back to beginning of this section.
if (sizeof(PFS0Superblock) !=
file->ReadObject(&sb, SECTION_HEADER_OFFSET + i * SECTION_HEADER_SIZE))
LOG_CRITICAL(Loader, "File reader errored out during header read.");
section.romfs.ivfc.levels[IVFC_MAX_LEVEL - 1].offset;
const size_t romfs_size = section.romfs.ivfc.levels[IVFC_MAX_LEVEL - 1].size;
auto dec =
Decrypt(section, std::make_shared<OffsetVfsFile>(file, romfs_size, romfs_offset),
romfs_offset);
if (dec != nullptr) {
files.push_back(std::move(dec));
romfs = files.back();
} else {
status = Loader::ResultStatus::ErrorMissingKeys;
return;
}
} else if (section.raw.header.filesystem_type == NCASectionFilesystemType::PFS0) {
u64 offset = (static_cast<u64>(header.section_tables[i].media_offset) *
MEDIA_OFFSET_MULTIPLIER) +
sb.pfs0_header_offset;
section.pfs0.pfs0_header_offset;
u64 size = MEDIA_OFFSET_MULTIPLIER * (header.section_tables[i].media_end_offset -
header.section_tables[i].media_offset);
auto npfs = std::make_shared<PartitionFilesystem>(
std::make_shared<OffsetVfsFile>(file, size, offset));
auto dec =
Decrypt(section, std::make_shared<OffsetVfsFile>(file, size, offset), offset);
if (dec != nullptr) {
auto npfs = std::make_shared<PartitionFilesystem>(std::move(dec));
if (npfs->GetStatus() == Loader::ResultStatus::Success) {
dirs.emplace_back(npfs);
if (IsDirectoryExeFS(dirs.back()))
exefs = dirs.back();
if (npfs->GetStatus() == Loader::ResultStatus::Success) {
dirs.push_back(std::move(npfs));
if (IsDirectoryExeFS(dirs.back()))
exefs = dirs.back();
}
} else {
status = Loader::ResultStatus::ErrorMissingKeys;
return;
}
}
}
@ -153,6 +266,10 @@ VirtualDir NCA::GetExeFS() const {
return exefs;
}
VirtualFile NCA::GetBaseFile() const {
return file;
}
bool NCA::ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) {
return false;
}

29
src/core/file_sys/content_archive.h
View File

@ -8,14 +8,18 @@
#include <memory>
#include <string>
#include <vector>
#include <boost/optional.hpp>
#include "common/common_funcs.h"
#include "common/common_types.h"
#include "common/swap.h"
#include "core/crypto/key_manager.h"
#include "core/file_sys/partition_filesystem.h"
#include "core/loader/loader.h"
namespace FileSys {
union NCASectionHeader;
enum class NCAContentType : u8 {
Program = 0,
Meta = 1,
@ -24,6 +28,13 @@ enum class NCAContentType : u8 {
Data = 4,
};
enum class NCASectionCryptoType : u8 {
NONE = 1,
XTS = 2,
CTR = 3,
BKTR = 4,
};
struct NCASectionTableEntry {
u32_le media_offset;
u32_le media_end_offset;
@ -48,7 +59,7 @@ struct NCAHeader {
std::array<u8, 0x10> rights_id;
std::array<NCASectionTableEntry, 0x4> section_tables;
std::array<std::array<u8, 0x20>, 0x4> hash_tables;
std::array<std::array<u8, 0x10>, 0x4> key_area;
std::array<u8, 0x40> key_area;
INSERT_PADDING_BYTES(0xC0);
};
static_assert(sizeof(NCAHeader) == 0x400, "NCAHeader has incorrect size.");
@ -58,10 +69,7 @@ inline bool IsDirectoryExeFS(const std::shared_ptr<VfsDirectory>& pfs) {
return pfs->GetFile("main") != nullptr && pfs->GetFile("main.npdm") != nullptr;
}
inline bool IsValidNCA(const NCAHeader& header) {
return header.magic == Common::MakeMagic('N', 'C', 'A', '2') ||
header.magic == Common::MakeMagic('N', 'C', 'A', '3');
}
bool IsValidNCA(const NCAHeader& header);
// An implementation of VfsDirectory that represents a Nintendo Content Archive (NCA) conatiner.
// After construction, use GetStatus to determine if the file is valid and ready to be used.
@ -81,10 +89,15 @@ public:
VirtualFile GetRomFS() const;
VirtualDir GetExeFS() const;
VirtualFile GetBaseFile() const;
protected:
bool ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) override;
private:
boost::optional<Core::Crypto::Key128> GetKeyAreaKey(NCASectionCryptoType type) const;
VirtualFile Decrypt(NCASectionHeader header, VirtualFile in, u64 starting_offset) const;
std::vector<VirtualDir> dirs;
std::vector<VirtualFile> files;
@ -95,6 +108,10 @@ private:
NCAHeader header{};
Loader::ResultStatus status{};
bool encrypted;
Core::Crypto::KeyManager keys;
};
} // namespace FileSys

20
src/core/file_sys/vfs.cpp
View File

@ -285,6 +285,26 @@ bool ReadOnlyVfsDirectory::Rename(std::string_view name) {
return false;
}
bool DeepEquals(const VirtualFile& file1, const VirtualFile& file2, size_t block_size) {
if (file1->GetSize() != file2->GetSize())
return false;
std::vector<u8> f1_v(block_size);
std::vector<u8> f2_v(block_size);
for (size_t i = 0; i < file1->GetSize(); i += block_size) {
auto f1_vs = file1->Read(f1_v.data(), block_size, i);
auto f2_vs = file2->Read(f2_v.data(), block_size, i);
if (f1_vs != f2_vs)
return false;
auto iters = std::mismatch(f1_v.begin(), f1_v.end(), f2_v.begin(), f2_v.end());
if (iters.first != f1_v.end() && iters.second != f2_v.end())
return false;
}
return true;
}
bool VfsRawCopy(VirtualFile src, VirtualFile dest) {
if (src == nullptr || dest == nullptr)
return false;

3
src/core/file_sys/vfs.h
View File

@ -245,6 +245,9 @@ struct ReadOnlyVfsDirectory : public VfsDirectory {
bool Rename(std::string_view name) override;
};
// Compare the two files, byte-for-byte, in increments specificed by block_size
bool DeepEquals(const VirtualFile& file1, const VirtualFile& file2, size_t block_size = 0x200);
// A method that copies the raw data between two different implementations of VirtualFile. If you
// are using the same implementation, it is probably better to use the Copy method in the parent
// directory of src/dest.

9
src/core/loader/loader.cpp
View File

@ -13,6 +13,7 @@
#include "core/loader/nca.h"
#include "core/loader/nro.h"
#include "core/loader/nso.h"
#include "core/loader/xci.h"
namespace Loader {
@ -35,6 +36,7 @@ FileType IdentifyFile(FileSys::VirtualFile file) {
CHECK_TYPE(NSO)
CHECK_TYPE(NRO)
CHECK_TYPE(NCA)
CHECK_TYPE(XCI)
#undef CHECK_TYPE
@ -60,6 +62,8 @@ FileType GuessFromFilename(const std::string& name) {
return FileType::NSO;
if (extension == "nca")
return FileType::NCA;
if (extension == "xci")
return FileType::XCI;
return FileType::Unknown;
}
@ -74,6 +78,8 @@ const char* GetFileTypeString(FileType type) {
return "NSO";
case FileType::NCA:
return "NCA";
case FileType::XCI:
return "XCI";
case FileType::DeconstructedRomDirectory:
return "Directory";
case FileType::Error:
@ -111,6 +117,9 @@ static std::unique_ptr<AppLoader> GetFileLoader(FileSys::VirtualFile file, FileT
case FileType::NCA:
return std::make_unique<AppLoader_NCA>(std::move(file));
case FileType::XCI:
return std::make_unique<AppLoader_XCI>(std::move(file));
// NX deconstructed ROM directory.
case FileType::DeconstructedRomDirectory:
return std::make_unique<AppLoader_DeconstructedRomDirectory>(std::move(file));

4
src/core/loader/loader.h
View File

@ -31,6 +31,7 @@ enum class FileType {
NSO,
NRO,
NCA,
XCI,
DeconstructedRomDirectory,
};
@ -72,7 +73,8 @@ enum class ResultStatus {
ErrorNotUsed,
ErrorAlreadyLoaded,
ErrorMemoryAllocationFailed,
ErrorEncrypted,
ErrorMissingKeys,
ErrorDecrypting,
ErrorUnsupportedArch,
};

19
src/core/loader/nca.cpp
View File

@ -25,12 +25,10 @@ namespace Loader {
AppLoader_NCA::AppLoader_NCA(FileSys::VirtualFile file) : AppLoader(std::move(file)) {}
FileType AppLoader_NCA::IdentifyType(const FileSys::VirtualFile& file) {
// TODO(DarkLordZach): Assuming everything is decrypted. Add crypto support.
FileSys::NCAHeader header{};
if (sizeof(FileSys::NCAHeader) != file->ReadObject(&header))
return FileType::Error;
FileSys::NCA nca(file);
if (IsValidNCA(header) && header.content_type == FileSys::NCAContentType::Program)
if (nca.GetStatus() == ResultStatus::Success &&
nca.GetType() == FileSys::NCAContentType::Program)
return FileType::NCA;
return FileType::Error;
@ -98,12 +96,21 @@ ResultStatus AppLoader_NCA::Load(Kernel::SharedPtr<Kernel::Process>& process) {
}
ResultStatus AppLoader_NCA::ReadRomFS(FileSys::VirtualFile& dir) {
if (nca == nullptr || nca->GetRomFS() == nullptr || nca->GetRomFS()->GetSize() == 0)
if (nca == nullptr)
return ResultStatus::ErrorNotLoaded;
if (nca->GetRomFS() == nullptr || nca->GetRomFS()->GetSize() == 0)
return ResultStatus::ErrorNotUsed;
dir = nca->GetRomFS();
return ResultStatus::Success;
}
ResultStatus AppLoader_NCA::ReadProgramId(u64& out_program_id) {
if (nca == nullptr)
return ResultStatus::ErrorNotLoaded;
out_program_id = nca->GetTitleId();
return ResultStatus::Success;
}
AppLoader_NCA::~AppLoader_NCA() = default;
} // namespace Loader

2
src/core/loader/nca.h
View File

@ -33,6 +33,8 @@ public:
ResultStatus ReadRomFS(FileSys::VirtualFile& dir) override;
ResultStatus ReadProgramId(u64& out_program_id) override;
~AppLoader_NCA();
private:

74
src/core/loader/xci.cpp Normal file
View File

@ -0,0 +1,74 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <vector>
#include "common/file_util.h"
#include "common/logging/log.h"
#include "common/string_util.h"
#include "common/swap.h"
#include "core/core.h"
#include "core/file_sys/content_archive.h"
#include "core/file_sys/control_metadata.h"
#include "core/file_sys/program_metadata.h"
#include "core/file_sys/romfs.h"
#include "core/gdbstub/gdbstub.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/resource_limit.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/loader/nso.h"
#include "core/loader/xci.h"
#include "core/memory.h"
namespace Loader {
AppLoader_XCI::AppLoader_XCI(FileSys::VirtualFile file)
: AppLoader(file), xci(std::make_unique<FileSys::XCI>(file)),
nca_loader(std::make_unique<AppLoader_NCA>(
xci->GetNCAFileByType(FileSys::NCAContentType::Program))) {}
AppLoader_XCI::~AppLoader_XCI() = default;
FileType AppLoader_XCI::IdentifyType(const FileSys::VirtualFile& file) {
FileSys::XCI xci(file);
if (xci.GetStatus() == ResultStatus::Success &&
xci.GetNCAByType(FileSys::NCAContentType::Program) != nullptr &&
AppLoader_NCA::IdentifyType(xci.GetNCAFileByType(FileSys::NCAContentType::Program)) ==
FileType::NCA) {
return FileType::XCI;
}
return FileType::Error;
}
ResultStatus AppLoader_XCI::Load(Kernel::SharedPtr<Kernel::Process>& process) {
if (is_loaded) {
return ResultStatus::ErrorAlreadyLoaded;
}
if (xci->GetNCAFileByType(FileSys::NCAContentType::Program) == nullptr) {
if (!Core::Crypto::KeyManager::KeyFileExists(false))
return ResultStatus::ErrorMissingKeys;
return ResultStatus::ErrorDecrypting;
}
auto result = nca_loader->Load(process);
if (result != ResultStatus::Success)
return result;
is_loaded = true;
return ResultStatus::Success;
}
ResultStatus AppLoader_XCI::ReadRomFS(FileSys::VirtualFile& dir) {
return nca_loader->ReadRomFS(dir);
}
ResultStatus AppLoader_XCI::ReadProgramId(u64& out_program_id) {
return nca_loader->ReadProgramId(out_program_id);
}
} // namespace Loader

44
src/core/loader/xci.h Normal file
View File

@ -0,0 +1,44 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include "common/common_types.h"
#include "core/file_sys/card_image.h"
#include "core/loader/loader.h"
#include "core/loader/nca.h"
namespace Loader {
/// Loads an XCI file
class AppLoader_XCI final : public AppLoader {
public:
explicit AppLoader_XCI(FileSys::VirtualFile file);
~AppLoader_XCI();
/**
* Returns the type of the file
* @param file std::shared_ptr<VfsFile> open file
* @return FileType found, or FileType::Error if this loader doesn't know it
*/
static FileType IdentifyType(const FileSys::VirtualFile& file);
FileType GetFileType() override {
return IdentifyType(file);
}
ResultStatus Load(Kernel::SharedPtr<Kernel::Process>& process) override;
ResultStatus ReadRomFS(FileSys::VirtualFile& dir) override;
ResultStatus ReadProgramId(u64& out_program_id) override;
private:
FileSys::ProgramMetadata metadata;
std::unique_ptr<FileSys::XCI> xci;
std::unique_ptr<AppLoader_NCA> nca_loader;
};
} // namespace Loader

2
src/core/settings.h
View File

@ -139,6 +139,8 @@ struct Values {
std::string log_filter;
bool use_dev_keys;
// Audio
std::string sink_id;
std::string audio_device_id;

2
src/yuzu/configuration/config.cpp
View File

@ -111,6 +111,7 @@ void Config::ReadValues() {
qt_config->beginGroup("Miscellaneous");
Settings::values.log_filter = qt_config->value("log_filter", "*:Info").toString().toStdString();
Settings::values.use_dev_keys = qt_config->value("use_dev_keys", false).toBool();
qt_config->endGroup();
qt_config->beginGroup("Debugging");
@ -222,6 +223,7 @@ void Config::SaveValues() {
qt_config->beginGroup("Miscellaneous");
qt_config->setValue("log_filter", QString::fromStdString(Settings::values.log_filter));
qt_config->setValue("use_dev_keys", Settings::values.use_dev_keys);
qt_config->endGroup();
qt_config->beginGroup("Debugging");

2
src/yuzu/game_list.cpp
View File

@ -365,7 +365,7 @@ void GameList::LoadInterfaceLayout() {
item_model->sort(header->sortIndicatorSection(), header->sortIndicatorOrder());
}
const QStringList GameList::supported_file_extensions = {"nso", "nro", "nca"};
const QStringList GameList::supported_file_extensions = {"nso", "nro", "nca", "xci"};
static bool HasSupportedFileExtension(const std::string& file_name) {
QFileInfo file = QFileInfo(file_name.c_str());

52
src/yuzu/main.cpp
View File

@ -23,6 +23,7 @@
#include "common/scope_exit.h"
#include "common/string_util.h"
#include "core/core.h"
#include "core/crypto/key_manager.h"
#include "core/gdbstub/gdbstub.h"
#include "core/loader/loader.h"
#include "core/settings.h"
@ -424,18 +425,49 @@ bool GMainWindow::LoadROM(const QString& filename) {
tr("Could not determine the system mode."));
break;
case Core::System::ResultStatus::ErrorLoader_ErrorEncrypted: {
case Core::System::ResultStatus::ErrorLoader_ErrorMissingKeys: {
const auto reg_found = Core::Crypto::KeyManager::KeyFileExists(false);
const auto title_found = Core::Crypto::KeyManager::KeyFileExists(true);
std::string file_text;
if (!reg_found && !title_found) {
file_text = "A proper key file (prod.keys, dev.keys, or title.keys) could not be "
"found. You will need to dump your keys from your switch to continue.";
} else if (reg_found && title_found) {
file_text =
"Both key files were found in your config directory, but the correct key could"
"not be found. You may be missing a titlekey or general key, depending on "
"the game.";
} else if (reg_found) {
file_text =
"The regular keys file (prod.keys/dev.keys) was found in your config, but the "
"titlekeys file (title.keys) was not. You are either missing the correct "
"titlekey or missing a general key required to decrypt the game.";
} else {
file_text = "The title keys file (title.keys) was found in your config, but "
"the regular keys file (prod.keys/dev.keys) was not. Unfortunately, "
"having the titlekey is not enough, you need additional general keys "
"to properly decrypt the game. You should double-check to make sure "
"your keys are correct.";
}
QMessageBox::critical(
this, tr("Error while loading ROM!"),
tr("The game that you are trying to load must be decrypted before being used with "
"yuzu. A real Switch is required.<br/><br/>"
"For more information on dumping and decrypting games, please see the following "
"wiki pages: <ul>"
"<li><a href='https://yuzu-emu.org/wiki/dumping-game-cartridges/'>Dumping Game "
"Cartridges</a></li>"
"<li><a href='https://yuzu-emu.org/wiki/dumping-installed-titles/'>Dumping "
"Installed Titles</a></li>"
"</ul>"));
tr(("The game you are trying to load is encrypted and the required keys to load "
"the game could not be found in your configuration. " +
file_text + " Please refer to the yuzu wiki for help.")
.c_str()));
break;
}
case Core::System::ResultStatus::ErrorLoader_ErrorDecrypting: {
QMessageBox::critical(
this, tr("Error while loading ROM!"),
tr("There was a general error while decrypting the game. This means that the keys "
"necessary were found, but were either incorrect, the game itself was not a "
"valid game or the game uses an unhandled cryptographic scheme. Please double "
"check that you have the correct "
"keys."));
break;
}
case Core::System::ResultStatus::ErrorLoader_ErrorInvalidFormat:

1
src/yuzu_cmd/config.cpp
View File

@ -119,6 +119,7 @@ void Config::ReadValues() {
// Miscellaneous
Settings::values.log_filter = sdl2_config->Get("Miscellaneous", "log_filter", "*:Trace");
Settings::values.use_dev_keys = sdl2_config->GetBoolean("Miscellaneous", "use_dev_keys", false);
// Debugging
Settings::values.use_gdbstub = sdl2_config->GetBoolean("Debugging", "use_gdbstub", false);

16
src/yuzu_cmd/yuzu.cpp
View File

@ -23,6 +23,7 @@
#include "yuzu_cmd/emu_window/emu_window_sdl2.h"
#include <getopt.h>
#include "core/crypto/key_manager.h"
#ifndef _MSC_VER
#include <unistd.h>
#endif
@ -71,6 +72,7 @@ static void InitializeLogging() {
/// Application entry point
int main(int argc, char** argv) {
Config config;
int option_index = 0;
bool use_gdbstub = Settings::values.use_gdbstub;
u32 gdb_port = static_cast<u32>(Settings::values.gdbstub_port);
@ -171,11 +173,15 @@ int main(int argc, char** argv) {
case Core::System::ResultStatus::ErrorLoader:
LOG_CRITICAL(Frontend, "Failed to load ROM!");
return -1;
case Core::System::ResultStatus::ErrorLoader_ErrorEncrypted:
LOG_CRITICAL(Frontend, "The game that you are trying to load must be decrypted before "
"being used with yuzu. \n\n For more information on dumping and "
"decrypting games, please refer to: "
"https://yuzu-emu.org/wiki/dumping-game-cartridges/");
case Core::System::ResultStatus::ErrorLoader_ErrorMissingKeys:
LOG_CRITICAL(Frontend, "The game you are trying to load is encrypted and the keys required "
"could not be found. Please refer to the yuzu wiki for help");
return -1;
case Core::System::ResultStatus::ErrorLoader_ErrorDecrypting:
LOG_CRITICAL(Frontend, "The game you are trying to load is encrypted and there was a "
"general error while decrypting. This could mean that the keys are "
"incorrect, game is invalid or game uses an unsupported method of "
"crypto. Please double-check your keys");
return -1;
case Core::System::ResultStatus::ErrorLoader_ErrorInvalidFormat:
LOG_CRITICAL(Frontend, "Error while loading ROM: The ROM format is not supported.");