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chore: dump fastfile data when xenon t6 fastfile is detected

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This commit is contained in:
Jan Laupetin
2025-08-19 13:22:39 +02:00
parent facb95f1cb
commit 802b0f244a
19 changed files with 226 additions and 152 deletions
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152
src/ZoneLoading/Game/T6/ZoneLoaderFactoryT6.cpp
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@@ -9,6 +9,7 @@
#include "Loading/Processor/ProcessorXChunks.h"
#include "Loading/Steps/StepAddProcessor.h"
#include "Loading/Steps/StepAllocXBlocks.h"
#include "Loading/Steps/StepDumpData.h"
#include "Loading/Steps/StepLoadSignature.h"
#include "Loading/Steps/StepLoadZoneContent.h"
#include "Loading/Steps/StepLoadZoneSizes.h"
@@ -16,16 +17,20 @@
#include "Loading/Steps/StepVerifyFileName.h"
#include "Loading/Steps/StepVerifyMagic.h"
#include "Loading/Steps/StepVerifySignature.h"
#include "Utils/ClassUtils.h"
#include "Utils/Endianness.h"
#include "Zone/XChunk/XChunkProcessorInflate.h"
#include "Zone/XChunk/XChunkProcessorSalsa20Decryption.h"
#include <cassert>
#include <cstdio>
#include <cstring>
#include <filesystem>
#include <format>
#include <iostream>
#include <memory>
using namespace T6;
namespace fs = std::filesystem;
namespace
{
@@ -44,46 +49,53 @@ namespace
return GameLanguage::LANGUAGE_NONE;
}
bool CanLoad(const ZoneHeader& header, bool* isSecure, bool* isOfficial, bool* isEncrypted)
bool CanLoad(const ZoneHeader& header, bool& isBigEndian, bool& isSecure, bool& isOfficial, bool& isEncrypted)
{
assert(isSecure != nullptr);
assert(isOfficial != nullptr);
if (header.m_version != ZoneConstants::ZONE_VERSION)
if (endianness::FromLittleEndian(header.m_version) == ZoneConstants::ZONE_VERSION_PC)
{
return false;
isBigEndian = false;
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_PC_TREYARCH, 8))
{
isSecure = true;
isOfficial = true;
isEncrypted = true;
return true;
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_PC_OAT, 8))
{
isSecure = true;
isOfficial = false;
isEncrypted = true;
return true;
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_UNSIGNED, 8))
{
isSecure = false;
isOfficial = true;
isEncrypted = true;
return true;
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_UNSIGNED_SERVER, 8))
{
isSecure = false;
isOfficial = true;
isEncrypted = false;
return true;
}
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_TREYARCH, 8))
else if (endianness::FromBigEndian(header.m_version) == ZoneConstants::ZONE_VERSION_XENON)
{
*isSecure = true;
*isOfficial = true;
*isEncrypted = true;
return true;
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_OAT, 8))
{
*isSecure = true;
*isOfficial = false;
*isEncrypted = true;
return true;
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_UNSIGNED, 8))
{
*isSecure = false;
*isOfficial = true;
*isEncrypted = true;
return true;
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_UNSIGNED_SERVER, 8))
{
*isSecure = false;
*isOfficial = true;
*isEncrypted = false;
return true;
isBigEndian = true;
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_XENON_TREYARCH, 8))
{
isSecure = true;
isOfficial = true;
isEncrypted = true;
return true;
}
}
return false;
@@ -145,16 +157,21 @@ namespace
return signatureLoadStepPtr;
}
ICapturedDataProvider* AddXChunkProcessor(const bool isEncrypted, ZoneLoader& zoneLoader, std::string& fileName)
ICapturedDataProvider* AddXChunkProcessor(const bool isBigEndian, const bool isEncrypted, ZoneLoader& zoneLoader, std::string& fileName)
{
ICapturedDataProvider* result = nullptr;
auto xChunkProcessor = processor::CreateProcessorXChunks(ZoneConstants::STREAM_COUNT, ZoneConstants::XCHUNK_SIZE, ZoneConstants::VANILLA_BUFFER_SIZE);
auto xChunkProcessor = processor::CreateProcessorXChunks(ZoneConstants::STREAM_COUNT,
ZoneConstants::XCHUNK_SIZE,
isBigEndian ? GameEndianness::BIG_ENDIAN : GameEndianness::LITTLE_ENDIAN,
ZoneConstants::VANILLA_BUFFER_SIZE);
const uint8_t (&salsa20Key)[32] = isBigEndian ? ZoneConstants::SALSA20_KEY_TREYARCH_XENON : ZoneConstants::SALSA20_KEY_TREYARCH_PC;
if (isEncrypted)
{
// If zone is encrypted, the decryption is applied before the decompression. T6 Zones always use Salsa20.
auto chunkProcessorSalsa20 = std::make_unique<XChunkProcessorSalsa20Decryption>(
ZoneConstants::STREAM_COUNT, fileName, ZoneConstants::SALSA20_KEY_TREYARCH, sizeof(ZoneConstants::SALSA20_KEY_TREYARCH));
auto chunkProcessorSalsa20 =
std::make_unique<XChunkProcessorSalsa20Decryption>(ZoneConstants::STREAM_COUNT, fileName, salsa20Key, sizeof(salsa20Key));
result = chunkProcessorSalsa20.get();
xChunkProcessor->AddChunkProcessor(std::move(chunkProcessorSalsa20));
}
@@ -170,12 +187,10 @@ namespace
std::unique_ptr<ZoneLoader> ZoneLoaderFactory::CreateLoaderForHeader(ZoneHeader& header, std::string& fileName) const
{
bool isSecure;
bool isOfficial;
bool isEncrypted;
bool isBigEndian, isSecure, isOfficial, isEncrypted;
// Check if this file is a supported T6 zone.
if (!CanLoad(header, &isSecure, &isOfficial, &isEncrypted))
if (!CanLoad(header, isBigEndian, isSecure, isOfficial, isEncrypted))
return nullptr;
// Create new zone
@@ -196,26 +211,37 @@ 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(isEncrypted, *zoneLoader, fileName);
ICapturedDataProvider* signatureDataProvider = AddXChunkProcessor(isBigEndian, isEncrypted, *zoneLoader, fileName);
// Start of the XFile struct
zoneLoader->AddLoadingStep(step::CreateStepLoadZoneSizes());
zoneLoader->AddLoadingStep(step::CreateStepAllocXBlocks());
// Start of the zone content
zoneLoader->AddLoadingStep(step::CreateStepLoadZoneContent(
[zonePtr](ZoneInputStream& stream)
{
return std::make_unique<ContentLoader>(*zonePtr, stream);
},
32u,
ZoneConstants::OFFSET_BLOCK_BIT_COUNT,
ZoneConstants::INSERT_BLOCK,
zonePtr->Memory()));
if (isSecure)
if (!isBigEndian)
{
zoneLoader->AddLoadingStep(step::CreateStepVerifySignature(std::move(rsa), signatureProvider, signatureDataProvider));
// Start of the XFile struct
zoneLoader->AddLoadingStep(step::CreateStepLoadZoneSizes());
zoneLoader->AddLoadingStep(step::CreateStepAllocXBlocks());
// Start of the zone content
zoneLoader->AddLoadingStep(step::CreateStepLoadZoneContent(
[zonePtr](ZoneInputStream& stream)
{
return std::make_unique<ContentLoader>(*zonePtr, stream);
},
32u,
ZoneConstants::OFFSET_BLOCK_BIT_COUNT,
ZoneConstants::INSERT_BLOCK,
zonePtr->Memory()));
if (isSecure)
{
zoneLoader->AddLoadingStep(step::CreateStepVerifySignature(std::move(rsa), signatureProvider, signatureDataProvider));
}
}
else
{
fs::path dumpFileNamePath = fs::path(fileName).filename();
dumpFileNamePath.replace_extension(".dat");
std::string dumpFileName = dumpFileNamePath.string();
std::cerr << std::format("Dumping xbox assets is not supported, making a full fastfile data dump to {}\n", dumpFileName);
zoneLoader->AddLoadingStep(step::CreateStepDumpData(dumpFileName, 0xFFFFFFFF));
}
return zoneLoader;