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chore: recognize when xenon fastfile use lzx compression

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This commit is contained in:
Jan Laupetin
2025-08-20 22:13:01 +01:00
parent 802b0f244a
commit 763d280805
9 changed files with 71 additions and 27 deletions
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8
src/Common/Game/IGame.h
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@@ -16,10 +16,14 @@ enum class GameId
COUNT
};
// The full uppercase names are macros in the standard lib
// So unfortunately not usable as values in the enum
enum class GameEndianness
{
LITTLE_ENDIAN,
BIG_ENDIAN
/* Little endian */
LE,
/* Big endian */
BE
};
enum class GameWordSize

12
src/ZoneCommon/Game/T6/ZoneConstantsT6.h
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@@ -12,15 +12,15 @@ namespace T6
ZoneConstants() = default;
public:
static constexpr const char* MAGIC_SIGNED_PC_TREYARCH = "TAff0100";
static constexpr const char* MAGIC_SIGNED_XENON_TREYARCH = "TAffx100";
static constexpr const char* MAGIC_SIGNED_PC_OAT = "ABff0100";
static constexpr const char* MAGIC_SIGNED_TREYARCH = "TAff0100";
static constexpr const char* MAGIC_SIGNED_LZX_TREYARCH = "TAffx100";
static constexpr const char* MAGIC_SIGNED_OAT = "ABff0100";
static constexpr const char* MAGIC_UNSIGNED = "TAffu100";
static constexpr const char* MAGIC_UNSIGNED_SERVER = "TAsvu100";
static_assert(std::char_traits<char>::length(MAGIC_SIGNED_PC_TREYARCH) == sizeof(ZoneHeader::m_magic));
static_assert(std::char_traits<char>::length(MAGIC_SIGNED_XENON_TREYARCH) == sizeof(ZoneHeader::m_magic));
static_assert(std::char_traits<char>::length(MAGIC_SIGNED_PC_OAT) == sizeof(ZoneHeader::m_magic));
static_assert(std::char_traits<char>::length(MAGIC_SIGNED_TREYARCH) == sizeof(ZoneHeader::m_magic));
static_assert(std::char_traits<char>::length(MAGIC_SIGNED_LZX_TREYARCH) == sizeof(ZoneHeader::m_magic));
static_assert(std::char_traits<char>::length(MAGIC_SIGNED_OAT) == sizeof(ZoneHeader::m_magic));
static_assert(std::char_traits<char>::length(MAGIC_UNSIGNED) == sizeof(ZoneHeader::m_magic));
static_assert(std::char_traits<char>::length(MAGIC_UNSIGNED_SERVER) == sizeof(ZoneHeader::m_magic));

3
src/ZoneCommon/Zone/XChunk/AbstractSalsa20Processor.cpp
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@@ -1,8 +1,9 @@
#include "AbstractSalsa20Processor.h"
#include <cassert>
#include <cstring>
AbstractSalsa20Processor::AbstractSalsa20Processor(const unsigned streamCount, const std::string& zoneName, const uint8_t* salsa20Key, const unsigned keySize)
AbstractSalsa20Processor::AbstractSalsa20Processor(const unsigned streamCount, const std::string& zoneName, const uint8_t* salsa20Key, const size_t keySize)
: m_stream_count(streamCount),
m_stream_contexts(streamCount),
m_block_hashes(BLOCK_HASHES_COUNT * streamCount * SHA1_HASH_SIZE),

2
src/ZoneCommon/Zone/XChunk/AbstractSalsa20Processor.h
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@@ -31,7 +31,7 @@ protected:
static constexpr auto SHA1_HASH_SIZE = 20u;
static constexpr auto SALSA20_IV_SIZE = 8u;
AbstractSalsa20Processor(unsigned streamCount, const std::string& zoneName, const uint8_t* salsa20Key, unsigned keySize);
AbstractSalsa20Processor(unsigned streamCount, const std::string& zoneName, const uint8_t* salsa20Key, size_t keySize);
void InitStreams(const std::string& zoneName, const uint8_t* salsa20Key, size_t keySize);
[[nodiscard]] uint8_t* GetHashBlock(unsigned streamNumber);

12
src/ZoneCommon/Zone/XChunk/XChunkProcessorLzxDecompress.cpp Normal file
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@@ -0,0 +1,12 @@
#include "XChunkProcessorLzxDecompress.h"
#include <cstring>
size_t
XChunkProcessorLzxDecompress::Process(unsigned streamNumber, const uint8_t* input, const size_t inputLength, uint8_t* output, const size_t outputBufferSize)
{
// TODO: Implement
memcpy(output, input, inputLength);
return inputLength;
}

8
src/ZoneCommon/Zone/XChunk/XChunkProcessorLzxDecompress.h Normal file
View File

@@ -0,0 +1,8 @@
#pragma once
#include "IXChunkProcessor.h"
class XChunkProcessorLzxDecompress final : public IXChunkProcessor
{
public:
size_t Process(unsigned streamNumber, const uint8_t* input, size_t inputLength, uint8_t* output, size_t outputBufferSize) override;
};

47
src/ZoneLoading/Game/T6/ZoneLoaderFactoryT6.cpp
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@@ -19,6 +19,7 @@
#include "Loading/Steps/StepVerifySignature.h"
#include "Utils/Endianness.h"
#include "Zone/XChunk/XChunkProcessorInflate.h"
#include "Zone/XChunk/XChunkProcessorLzxDecompress.h"
#include "Zone/XChunk/XChunkProcessorSalsa20Decryption.h"
#include <cassert>
@@ -49,12 +50,13 @@ namespace
return GameLanguage::LANGUAGE_NONE;
}
bool CanLoad(const ZoneHeader& header, bool& isBigEndian, bool& isSecure, bool& isOfficial, bool& isEncrypted)
bool CanLoad(const ZoneHeader& header, bool& isBigEndian, bool& isSecure, bool& isOfficial, bool& isEncrypted, bool& isLzxCompressed)
{
if (endianness::FromLittleEndian(header.m_version) == ZoneConstants::ZONE_VERSION_PC)
{
isBigEndian = false;
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_PC_TREYARCH, 8))
isLzxCompressed = false;
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_TREYARCH, 8))
{
isSecure = true;
isOfficial = true;
@@ -62,7 +64,7 @@ namespace
return true;
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_PC_OAT, 8))
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_OAT, 8))
{
isSecure = true;
isOfficial = false;
@@ -89,11 +91,20 @@ namespace
else if (endianness::FromBigEndian(header.m_version) == ZoneConstants::ZONE_VERSION_XENON)
{
isBigEndian = true;
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_XENON_TREYARCH, 8))
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_TREYARCH, 8))
{
isSecure = true;
isOfficial = true;
isEncrypted = true;
isLzxCompressed = false;
return true;
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_LZX_TREYARCH, 8))
{
isSecure = true;
isOfficial = true;
isEncrypted = true;
isLzxCompressed = true;
return true;
}
}
@@ -157,13 +168,12 @@ namespace
return signatureLoadStepPtr;
}
ICapturedDataProvider* AddXChunkProcessor(const bool isBigEndian, const bool isEncrypted, ZoneLoader& zoneLoader, std::string& fileName)
ICapturedDataProvider*
AddXChunkProcessor(const bool isBigEndian, const bool isEncrypted, const bool isLzxCompressed, ZoneLoader& zoneLoader, std::string& fileName)
{
ICapturedDataProvider* result = nullptr;
auto xChunkProcessor = processor::CreateProcessorXChunks(ZoneConstants::STREAM_COUNT,
ZoneConstants::XCHUNK_SIZE,
isBigEndian ? GameEndianness::BIG_ENDIAN : GameEndianness::LITTLE_ENDIAN,
ZoneConstants::VANILLA_BUFFER_SIZE);
auto xChunkProcessor = processor::CreateProcessorXChunks(
ZoneConstants::STREAM_COUNT, ZoneConstants::XCHUNK_SIZE, isBigEndian ? GameEndianness::BE : GameEndianness::LE, ZoneConstants::VANILLA_BUFFER_SIZE);
const uint8_t (&salsa20Key)[32] = isBigEndian ? ZoneConstants::SALSA20_KEY_TREYARCH_XENON : ZoneConstants::SALSA20_KEY_TREYARCH_PC;
@@ -176,8 +186,17 @@ namespace
xChunkProcessor->AddChunkProcessor(std::move(chunkProcessorSalsa20));
}
// Decompress the chunks using zlib
xChunkProcessor->AddChunkProcessor(std::make_unique<XChunkProcessorInflate>());
if (isLzxCompressed)
{
// Decompress the chunks using lzx
xChunkProcessor->AddChunkProcessor(std::make_unique<XChunkProcessorLzxDecompress>());
}
else
{
// Decompress the chunks using zlib
xChunkProcessor->AddChunkProcessor(std::make_unique<XChunkProcessorInflate>());
}
zoneLoader.AddLoadingStep(step::CreateStepAddProcessor(std::move(xChunkProcessor)));
// If there is encryption, the signed data of the zone is the final hash blocks provided by the Salsa20 IV adaption algorithm
@@ -187,10 +206,10 @@ namespace
std::unique_ptr<ZoneLoader> ZoneLoaderFactory::CreateLoaderForHeader(ZoneHeader& header, std::string& fileName) const
{
bool isBigEndian, isSecure, isOfficial, isEncrypted;
bool isBigEndian, isSecure, isOfficial, isEncrypted, isLzxCompressed;
// Check if this file is a supported T6 zone.
if (!CanLoad(header, isBigEndian, isSecure, isOfficial, isEncrypted))
if (!CanLoad(header, isBigEndian, isSecure, isOfficial, isEncrypted, isLzxCompressed))
return nullptr;
// Create new zone
@@ -211,7 +230,7 @@ std::unique_ptr<ZoneLoader> ZoneLoaderFactory::CreateLoaderForHeader(ZoneHeader&
ISignatureProvider* signatureProvider = AddAuthHeaderSteps(isSecure, *zoneLoader, fileName);
// Setup loading XChunks from the zone from this point on.
ICapturedDataProvider* signatureDataProvider = AddXChunkProcessor(isBigEndian, isEncrypted, *zoneLoader, fileName);
ICapturedDataProvider* signatureDataProvider = AddXChunkProcessor(isBigEndian, isEncrypted, isLzxCompressed, *zoneLoader, fileName);
if (!isBigEndian)
{

2
src/ZoneLoading/Loading/Processor/ProcessorXChunks.cpp
View File

@@ -231,7 +231,7 @@ namespace
return;
}
if (m_endianness == GameEndianness::LITTLE_ENDIAN)
if (m_endianness == GameEndianness::LE)
chunkSize = endianness::FromLittleEndian(chunkSize);
else
chunkSize = endianness::FromBigEndian(chunkSize);

4
src/ZoneWriting/Game/T6/ZoneWriterFactoryT6.cpp
View File

@@ -49,9 +49,9 @@ namespace
if (isSecure)
{
if (isOfficial)
memcpy(header.m_magic, ZoneConstants::MAGIC_SIGNED_PC_TREYARCH, sizeof(ZoneHeader::m_magic));
memcpy(header.m_magic, ZoneConstants::MAGIC_SIGNED_TREYARCH, sizeof(ZoneHeader::m_magic));
else
memcpy(header.m_magic, ZoneConstants::MAGIC_SIGNED_PC_OAT, sizeof(ZoneHeader::m_magic));
memcpy(header.m_magic, ZoneConstants::MAGIC_SIGNED_OAT, sizeof(ZoneHeader::m_magic));
}
else
{