diff --git a/.gitmodules b/.gitmodules index 1ec7d94fc..5bf470970 100644 --- a/.gitmodules +++ b/.gitmodules @@ -16,3 +16,6 @@ [submodule "ext/hat-trie"] path = ext/hat-trie url = https://github.com/Tessil/hat-trie +[submodule "ext/zstd"] + path = ext/zstd + url = https://github.com/facebook/zstd diff --git a/README.md b/README.md index c9297f996..b7ee68604 100644 --- a/README.md +++ b/README.md @@ -185,7 +185,11 @@ Several modern C++20 libraries for sanely parsing Valve formats, rolled into one - VPK v1-2 + + VPK v1-2, v54 +
• Counter-Strike: 2 modifications +
• Counter-Strike: Source ClientMod modifications + ✅ ✅ diff --git a/docs/index.md b/docs/index.md index 97879cccf..d6477eeb5 100644 --- a/docs/index.md +++ b/docs/index.md @@ -162,7 +162,11 @@ Several modern C++20 libraries for sanely parsing Valve formats, rolled into one ✅ - VPK v1-2 + + VPK v1-2, v54 +
• Counter-Strike: 2 modifications +
• Counter-Strike: Source ClientMod modifications + ✅ ✅ diff --git a/ext/_ext.cmake b/ext/_ext.cmake index 9f9d9dc3c..62533d539 100644 --- a/ext/_ext.cmake +++ b/ext/_ext.cmake @@ -37,19 +37,27 @@ if(NOT TARGET miniz) endif() +# zstd +if(NOT TARGET zstd::libzstd) + set(ZSTD_BUILD_PROGRAMS OFF CACHE INTERNAL "" FORCE) + set(ZSTD_BUILD_TESTS OFF CACHE INTERNAL "" FORCE) + add_subdirectory("${CMAKE_CURRENT_LIST_DIR}/zstd/build/cmake") + # find_package hacks + set(ZSTD_FOUND ON CACHE INTERNAL "" FORCE) + set(ZSTD_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/ext/zstd/lib" CACHE INTERNAL "" FORCE) + set(ZSTD_LIBRARY_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/ext/zstd/lib" CACHE INTERNAL "" FORCE) + set(ZSTD_LIBRARIES "libzstd_static" CACHE INTERNAL "" FORCE) +endif() + + # minizip-ng if(NOT TARGET MINIZIP::minizip) set(MZ_COMPAT OFF CACHE INTERNAL "" FORCE) - set(MZ_ZLIB ON CACHE INTERNAL "") - set(MZ_BZIP2 ON CACHE INTERNAL "") - set(MZ_LZMA ON CACHE INTERNAL "") - set(MZ_ZSTD ON CACHE INTERNAL "") - set(MZ_LIBCOMP OFF CACHE INTERNAL "") + set(MZ_FETCH_LIBS ON CACHE INTERNAL "") + set(MZ_FORCE_FETCH_LIBS OFF CACHE INTERNAL "") set(MZ_PKCRYPT OFF CACHE INTERNAL "") set(MZ_WZAES OFF CACHE INTERNAL "") set(MZ_OPENSSL OFF CACHE INTERNAL "") - set(MZ_FETCH_LIBS ON CACHE INTERNAL "") - set(MZ_FORCE_FETCH_LIBS ON CACHE INTERNAL "") set(SKIP_INSTALL_ALL ON CACHE INTERNAL "" FORCE) add_subdirectory("${CMAKE_CURRENT_LIST_DIR}/minizip-ng") diff --git a/ext/zstd b/ext/zstd new file mode 160000 index 000000000..20707e371 --- /dev/null +++ b/ext/zstd @@ -0,0 +1 @@ +Subproject commit 20707e3718ee14250fb8a44b3bf023ea36bd88df diff --git a/include/vpkpp/Options.h b/include/vpkpp/Options.h index 0abfaf24a..63296bf66 100644 --- a/include/vpkpp/Options.h +++ b/include/vpkpp/Options.h @@ -20,8 +20,8 @@ struct BakeOptions { /// BSP/ZIP - Override compression type of all stored entries EntryCompressionType zip_compressionTypeOverride = EntryCompressionType::NO_OVERRIDE; - /// BSP/ZIP - Compression strength (use -1 for the compression type's default) - int8_t zip_compressionStrength = -1; + /// BSP/VPK/ZIP - Compression strength + int8_t zip_compressionStrength = 0; /// GMA - Write CRCs for files and the overall GMA file when baking bool gma_writeCRCs = true; diff --git a/include/vpkpp/format/VPK.h b/include/vpkpp/format/VPK.h index 46d9466ba..551ecb1d6 100644 --- a/include/vpkpp/format/VPK.h +++ b/include/vpkpp/format/VPK.h @@ -129,6 +129,10 @@ class VPK : public PackFile { void addEntryInternal(Entry& entry, const std::string& path, std::vector& buffer, EntryOptions options) override; + [[nodiscard]] bool hasExtendedHeader() const; + + [[nodiscard]] bool hasCompression() const; + [[nodiscard]] uint32_t getHeaderLength() const; uint32_t numArchives = -1; diff --git a/src/vpkpp/_vpkpp.cmake b/src/vpkpp/_vpkpp.cmake index da18b4a42..a6d421e6c 100644 --- a/src/vpkpp/_vpkpp.cmake +++ b/src/vpkpp/_vpkpp.cmake @@ -1,5 +1,5 @@ add_pretty_parser(vpkpp - DEPS cryptopp::cryptopp MINIZIP::minizip sourcepp::bsppp sourcepp::kvpp + DEPS cryptopp::cryptopp libzstd_static MINIZIP::minizip sourcepp::bsppp sourcepp::kvpp DEPS_INTERFACE tsl::hat_trie PRECOMPILED_HEADERS "${CMAKE_CURRENT_SOURCE_DIR}/include/vpkpp/format/BSP.h" diff --git a/src/vpkpp/format/VPK.cpp b/src/vpkpp/format/VPK.cpp index 6304264bc..be539c309 100644 --- a/src/vpkpp/format/VPK.cpp +++ b/src/vpkpp/format/VPK.cpp @@ -5,9 +5,7 @@ #define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1 #include - #include - #include #include #include @@ -16,6 +14,7 @@ #include #include #include +#include using namespace kvpp; using namespace sourcepp; @@ -53,7 +52,7 @@ VPK::VPK(const std::string& fullFilePath_) } std::unique_ptr VPK::create(const std::string& path, uint32_t version) { - if (version != 1 && version != 2) { + if (version != 1 && version != 2 && version != 54) { return nullptr; } @@ -66,7 +65,7 @@ std::unique_ptr VPK::create(const std::string& path, uint32_t version) header1.treeSize = 1; stream.write(header1); - if (version != 1) { + if (version == 2 || version == 54) { Header2 header2{}; header2.fileDataSectionSize = 0; header2.archiveMD5SectionSize = 0; @@ -98,7 +97,7 @@ std::unique_ptr VPK::openInternal(const std::string& path, const Entry } auto* vpk = new VPK{path}; - auto packFile = std::unique_ptr(vpk); + auto packFile = std::unique_ptr{vpk}; FileStream reader{vpk->fullFilePath}; reader.seek_in(0); @@ -107,7 +106,7 @@ std::unique_ptr VPK::openInternal(const std::string& path, const Entry // File is not a VPK return nullptr; } - if (vpk->header1.version == 2) { + if (vpk->hasExtendedHeader()) { reader.read(vpk->header2); } else if (vpk->header1.version != 1) { // Apex Legends, Titanfall, etc. are not supported @@ -161,6 +160,10 @@ std::unique_ptr VPK::openInternal(const std::string& path, const Entry entry.offset = reader.read(); entry.length = reader.read(); + if (vpk->hasCompression()) { + entry.compressedLength = reader.read(); + } + if (reader.read() != VPK_ENTRY_TERM) { // Invalid terminator! return nullptr; @@ -187,24 +190,28 @@ std::unique_ptr VPK::openInternal(const std::string& path, const Entry // If there are no archives, -1 will be incremented to 0 vpk->numArchives++; - // Read VPK2-specific data - if (vpk->header1.version != 2) + // VPK v1 has nothing else for us + if (!vpk->hasExtendedHeader()) { return packFile; + } // Skip over file data, if any reader.seek_in(vpk->header2.fileDataSectionSize, std::ios::cur); - if (vpk->header2.archiveMD5SectionSize % sizeof(MD5Entry) != 0) + if (vpk->header2.archiveMD5SectionSize % sizeof(MD5Entry) != 0) { return nullptr; + } vpk->md5Entries.clear(); unsigned int entryNum = vpk->header2.archiveMD5SectionSize / sizeof(MD5Entry); - for (unsigned int i = 0; i < entryNum; i++) + for (unsigned int i = 0; i < entryNum; i++) { vpk->md5Entries.push_back(reader.read()); + } - if (vpk->header2.otherMD5SectionSize != 48) + if (vpk->header2.otherMD5SectionSize != 48) { // This should always be 48 return packFile; + } vpk->footer2.treeChecksum = reader.read_bytes<16>(); vpk->footer2.md5EntriesChecksum = reader.read_bytes<16>(); @@ -231,12 +238,12 @@ std::vector VPK::verifyEntryChecksums() const { } bool VPK::hasPackFileChecksum() const { - return this->header1.version == 2; + return this->hasExtendedHeader(); } bool VPK::verifyPackFileChecksum() const { - // File checksums are only in v2 - if (this->header1.version != 2) { + // File checksums aren't in v1 + if (!this->hasExtendedHeader()) { return true; } @@ -261,7 +268,7 @@ bool VPK::verifyPackFileChecksum() const { } bool VPK::hasPackFileSignature() const { - if (this->header1.version != 2) { + if (!this->hasExtendedHeader()) { return false; } if (this->footer2.publicKey.empty() || this->footer2.signature.empty()) { @@ -271,8 +278,8 @@ bool VPK::hasPackFileSignature() const { } bool VPK::verifyPackFileSignature() const { - // Signatures are only in v2 - if (this->header1.version != 2) { + // Signatures aren't in v1 + if (!this->hasExtendedHeader()) { return true; } @@ -290,6 +297,7 @@ bool VPK::verifyPackFileSignature() const { return crypto::verifySHA256PublicKey(dirFileBuffer, this->footer2.publicKey, this->footer2.signature); } +// NOLINTNEXTLINE(*-no-recursion) std::optional> VPK::readEntry(const std::string& path_) const { auto path = this->cleanEntryPath(path_); auto entry = this->findEntry(path); @@ -300,54 +308,93 @@ std::optional> VPK::readEntry(const std::string& path_) c return readUnbakedEntry(*entry); } - std::vector output(entry->length, static_cast(0)); + const auto entryLength = (this->hasCompression() && entry->compressedLength) ? entry->compressedLength : entry->length; + if (!entryLength) { + return {}; + } + std::vector out(entryLength, static_cast(0)); if (!entry->extraData.empty()) { - std::copy(entry->extraData.begin(), entry->extraData.end(), output.begin()); + std::copy(entry->extraData.begin(), entry->extraData.end(), out.begin()); + } + if (entryLength != entry->extraData.size()) { + if (entry->archiveIndex != VPK_DIR_INDEX) { + // Stored in a numbered archive + FileStream stream{this->getTruncatedFilepath() + '_' + string::padNumber(entry->archiveIndex, 3) + std::string{::isFPX(this) ? FPX_EXTENSION : VPK_EXTENSION}}; + if (!stream) { + return std::nullopt; + } + stream.seek_in_u(entry->offset); + auto bytes = stream.read_bytes(entryLength - entry->extraData.size()); + std::copy(bytes.begin(), bytes.end(), out.begin() + static_cast(entry->extraData.size())); + } else { + // Stored in this directory VPK + FileStream stream{this->fullFilePath}; + if (!stream) { + return std::nullopt; + } + stream.seek_in_u(this->getHeaderLength() + this->header1.treeSize + entry->offset); + auto bytes = stream.read_bytes(entry->length - entry->extraData.size()); + std::copy(bytes.begin(), bytes.end(), out.begin() + static_cast(entry->extraData.size())); + } } - if (entry->length == entry->extraData.size()) { - return output; + + if (!this->hasCompression() || !entry->compressedLength) { + return out; } - if (entry->archiveIndex != VPK_DIR_INDEX) { - // Stored in a numbered archive - FileStream stream{this->getTruncatedFilepath() + '_' + string::padNumber(entry->archiveIndex, 3) + (::isFPX(this) ? FPX_EXTENSION : VPK_EXTENSION).data()}; - if (!stream) { - return std::nullopt; - } - stream.seek_in_u(entry->offset); - auto bytes = stream.read_bytes(entry->length - entry->extraData.size()); - std::copy(bytes.begin(), bytes.end(), output.begin() + static_cast(entry->extraData.size())); - } else { - // Stored in this directory VPK - FileStream stream{this->fullFilePath}; - if (!stream) { - return std::nullopt; - } - stream.seek_in_u(this->getHeaderLength() + this->header1.treeSize + entry->offset); - auto bytes = stream.read_bytes(entry->length - entry->extraData.size()); - std::copy(bytes.begin(), bytes.end(), output.begin() + static_cast(entry->extraData.size())); + const auto decompressionDict = this->readEntry(this->getTruncatedFilestem() + ".dict"); + if (!decompressionDict) { + return std::nullopt; + } + + std::unique_ptr dDict{ + ZSTD_createDDict(decompressionDict->data(), decompressionDict->size()), + [](void* dDict) { ZSTD_freeDDict(reinterpret_cast(dDict)); }, + }; + if (!dDict) { + return std::nullopt; + } + + std::unique_ptr dCtx{ + ZSTD_createDCtx(), + [](void* dCtx) { ZSTD_freeDCtx(reinterpret_cast(dCtx)); }, + }; + if (!dCtx) { + return std::nullopt; } - return output; + std::vector decompressedData; + decompressedData.resize(entry->length); + + if (ZSTD_isError(ZSTD_decompress_usingDDict(dCtx.get(), decompressedData.data(), decompressedData.size(), out.data(), out.size(), dDict.get()))) { + return {}; + } + return decompressedData; } void VPK::addEntryInternal(Entry& entry, const std::string& path, std::vector& buffer, EntryOptions options) { + if (this->hasCompression()) { + // I don't feel like getting this to work right now + options.vpk_preloadBytes = 0; + } + entry.crc32 = crypto::computeCRC32(buffer); entry.length = buffer.size(); // Offset will be reset when it's baked, assuming we're not replacing an existing chunk (when flags = 1) + // Compressed entries will not replace existing chunks, since their size is unknown entry.flags = 0; entry.offset = 0; entry.archiveIndex = options.vpk_saveToDirectory ? VPK_DIR_INDEX : this->numArchives; - if (!options.vpk_saveToDirectory && !this->freedChunks.empty()) { + if (!options.vpk_saveToDirectory && !this->freedChunks.empty() && !this->hasCompression()) { int64_t bestChunkIndex = -1; std::size_t currentChunkGap = SIZE_MAX; for (int64_t i = 0; i < this->freedChunks.size(); i++) { if ( - (bestChunkIndex < 0 && this->freedChunks[i].length >= entry.length) || - (bestChunkIndex >= 0 && this->freedChunks[i].length >= entry.length && (this->freedChunks[i].length - entry.length) < currentChunkGap) - ) { + (bestChunkIndex < 0 && this->freedChunks[i].length >= entry.length) || + (bestChunkIndex >= 0 && this->freedChunks[i].length >= entry.length && (this->freedChunks[i].length - entry.length) < currentChunkGap) + ) { bestChunkIndex = i; currentChunkGap = this->freedChunks[i].length - entry.length; } @@ -408,6 +455,33 @@ bool VPK::bake(const std::string& outputDir_, BakeOptions options, const EntryCa std::string outputDir = this->getBakeOutputDir(outputDir_); std::string outputPath = outputDir + '/' + this->getFilename(); + // Store compression dictionary + std::optional> compressionDict; + std::unique_ptr cDict{nullptr, nullptr}; + std::unique_ptr cCtx{nullptr, nullptr}; + if (this->hasCompression()) { + compressionDict = this->readEntry(this->getTruncatedFilestem() + ".dict"); + if (!compressionDict) { + return false; + } + + cDict = { + ZSTD_createCDict(compressionDict->data(), compressionDict->size(), options.zip_compressionStrength), + [](void* cDict) { ZSTD_freeCDict(reinterpret_cast(cDict)); }, + }; + if (!cDict) { + return false; + } + + cCtx = { + ZSTD_createCCtx(), + [](void* cCtx) { ZSTD_freeCCtx(reinterpret_cast(cCtx)); }, + }; + if (!cCtx) { + return false; + } + } + // Reconstruct data so we're not looping over it a ton of times std::unordered_map>>> temp; this->runForAllEntriesInternal([&temp](const std::string& path, Entry& entry) { @@ -451,7 +525,7 @@ bool VPK::bake(const std::string& outputDir_, BakeOptions options, const EntryCa // Helper const auto getArchiveFilename = [this](const std::string& filename_, uint32_t archiveIndex) { - std::string out{filename_ + '_' + string::padNumber(archiveIndex, 3) + (::isFPX(this) ? FPX_EXTENSION : VPK_EXTENSION).data()}; + std::string out{filename_ + '_' + string::padNumber(archiveIndex, 3) + std::string{::isFPX(this) ? FPX_EXTENSION : VPK_EXTENSION}}; string::normalizeSlashes(out); return out; }; @@ -477,7 +551,7 @@ bool VPK::bake(const std::string& outputDir_, BakeOptions options, const EntryCa // Dummy header outDir.write(this->header1); - if (this->header1.version == 2) { + if (this->hasExtendedHeader()) { outDir.write(this->header2); } @@ -495,12 +569,13 @@ bool VPK::bake(const std::string& outputDir_, BakeOptions options, const EntryCa if (!entryData) { continue; } - if (entry->length == entry->extraData.size()) { + + if (entry->length == entry->extraData.size() && !this->hasCompression()) { // Override the archive index, no need for an archive VPK entry->archiveIndex = VPK_DIR_INDEX; entry->offset = dirVPKEntryData.size(); } else if (entry->archiveIndex != VPK_DIR_INDEX && (entry->flags & VPK_FLAG_REUSING_CHUNK)) { - // The entry is replacing pre-existing data in a VPK archive + // The entry is replacing pre-existing data in a VPK archive - it's not compressed auto archiveFilename = getArchiveFilename(::removeVPKAndOrDirSuffix(outputPath, ::isFPX(this)), entry->archiveIndex); FileStream stream{archiveFilename, FileStream::OPT_READ | FileStream::OPT_WRITE | FileStream::OPT_CREATE_IF_NONEXISTENT}; stream.seek_out_u(entry->offset); @@ -510,11 +585,31 @@ bool VPK::bake(const std::string& outputDir_, BakeOptions options, const EntryCa auto archiveFilename = getArchiveFilename(::removeVPKAndOrDirSuffix(outputPath, ::isFPX(this)), entry->archiveIndex); entry->offset = std::filesystem::exists(archiveFilename) ? std::filesystem::file_size(archiveFilename) : 0; FileStream stream{archiveFilename, FileStream::OPT_APPEND | FileStream::OPT_CREATE_IF_NONEXISTENT}; - stream.write(*entryData); + if (!this->hasCompression() || !entry->compressedLength) { + stream.write(*entryData); + } else { + std::vector compressedData; + compressedData.resize(ZSTD_compressBound(entryData->size())); + auto compressedSize = ZSTD_compress_usingCDict(cCtx.get(), compressedData.data(), compressedData.size(), entryData->data(), entryData->size(), cDict.get()); + if (ZSTD_isError(compressedSize) || compressedData.size() < compressedSize) { + return false; + } + stream.write(std::span{compressedData.data(), compressedSize}); + } } else { // The entry will be added to the directory VPK entry->offset = dirVPKEntryData.size(); - dirVPKEntryData.insert(dirVPKEntryData.end(), entryData->data(), entryData->data() + entryData->size()); + if (!this->hasCompression() || !entry->compressedLength) { + dirVPKEntryData.insert(dirVPKEntryData.end(), entryData->data(), entryData->data() + entryData->size()); + } else { + std::vector compressedData; + compressedData.resize(ZSTD_compressBound(entryData->size())); + auto compressedSize = ZSTD_compress_usingCDict(cCtx.get(), compressedData.data(), compressedData.size(), entryData->data(), entryData->size(), cDict.get()); + if (ZSTD_isError(compressedSize) || compressedData.size() < compressedSize) { + return false; + } + dirVPKEntryData.insert(dirVPKEntryData.end(), compressedData.data(), compressedData.data() + compressedSize); + } } // Clear flags @@ -527,6 +622,11 @@ bool VPK::bake(const std::string& outputDir_, BakeOptions options, const EntryCa outDir.write(entry->archiveIndex); outDir.write(entry->offset); outDir.write(entry->length - entry->extraData.size()); + + if (this->hasCompression()) { + outDir.write(entry->compressedLength - entry->extraData.size()); + } + outDir.write(VPK_ENTRY_TERM); if (!entry->extraData.empty()) { @@ -554,22 +654,21 @@ bool VPK::bake(const std::string& outputDir_, BakeOptions options, const EntryCa // Calculate Header1 this->header1.treeSize = outDir.tell_out() - dirVPKEntryData.size() - this->getHeaderLength(); - // VPK v2 stuff - if (this->header1.version == 2) { + // Non-v1 stuff + if (this->hasExtendedHeader()) { // Calculate hashes for all entries this->md5Entries.clear(); if (options.vpk_generateMD5Entries) { this->runForAllEntries([this](const std::string& path, const Entry& entry) { - // Believe it or not this should be safe to call by now auto binData = this->readEntry(path); if (!binData) { return; } MD5Entry md5Entry{ - .archiveIndex = entry.archiveIndex, - .offset = static_cast(entry.offset), - .length = static_cast(entry.length - entry.extraData.size()), - .checksum = crypto::computeMD5(*binData), + .archiveIndex = entry.archiveIndex, + .offset = static_cast(entry.offset), + .length = static_cast(entry.length - entry.extraData.size()), + .checksum = crypto::computeMD5(*binData), }; this->md5Entries.push_back(md5Entry); }, false); @@ -616,8 +715,8 @@ bool VPK::bake(const std::string& outputDir_, BakeOptions options, const EntryCa outDir.seek_out(0); outDir.write(this->header1); - // v2 adds the MD5 hashes and file signature - if (this->header1.version != 2) { + // MD5 hashes, file signature + if (!this->hasExtendedHeader()) { PackFile::setFullFilePath(outputDir); return true; } @@ -689,7 +788,7 @@ bool VPK::generateKeyPairFiles(const std::string& name) { } bool VPK::sign(const std::string& filename_) { - if (this->header1.version != 2 || !std::filesystem::exists(filename_) || std::filesystem::is_directory(filename_)) { + if (!this->hasExtendedHeader() || !std::filesystem::exists(filename_) || std::filesystem::is_directory(filename_)) { return false; } @@ -708,18 +807,18 @@ bool VPK::sign(const std::string& filename_) { } bool VPK::sign(const std::vector& privateKey, const std::vector& publicKey) { - if (this->header1.version != 2) { + if (!this->hasExtendedHeader()) { return false; } this->header2.signatureSectionSize = this->footer2.publicKey.size() + this->footer2.signature.size() + sizeof(uint32_t) * 2; { - FileStream stream{this->getFilepath().data(), FileStream::OPT_READ | FileStream::OPT_WRITE}; + FileStream stream{std::string{this->getFilepath()}, FileStream::OPT_READ | FileStream::OPT_WRITE}; stream.seek_out(sizeof(Header1)); stream.write(this->header2); } - auto dirFileBuffer = fs::readFileBuffer(this->getFilepath().data()); + auto dirFileBuffer = fs::readFileBuffer(std::string{this->getFilepath()}); if (dirFileBuffer.size() <= this->header2.signatureSectionSize) { return false; } @@ -730,7 +829,7 @@ bool VPK::sign(const std::vector& privateKey, const std::vectorfooter2.signature = crypto::signDataWithSHA256PrivateKey(dirFileBuffer, privateKey); { - FileStream stream{this->getFilepath().data(), FileStream::OPT_READ | FileStream::OPT_WRITE}; + FileStream stream{std::string{this->getFilepath()}, FileStream::OPT_READ | FileStream::OPT_WRITE}; stream.seek_out(this->getHeaderLength() + this->header1.treeSize + this->header2.fileDataSectionSize + this->header2.archiveMD5SectionSize + this->header2.otherMD5SectionSize); stream.write(static_cast(this->footer2.publicKey.size())); stream.write(this->footer2.publicKey); @@ -745,7 +844,7 @@ uint32_t VPK::getVersion() const { } void VPK::setVersion(uint32_t version) { - if (version != 1 && version != 2) { + if (version != 1 && version != 2 && version != 54) { return; } if (::isFPX(this) || version == this->header1.version) { @@ -754,8 +853,8 @@ void VPK::setVersion(uint32_t version) { this->header1.version = version; // Clearing these isn't necessary, but might as well - this->header2 = Header2{}; - this->footer2 = Footer2{}; + this->header2 = {}; + this->footer2 = {}; this->md5Entries.clear(); } @@ -767,8 +866,16 @@ void VPK::setChunkSize(uint32_t newChunkSize) { this->chunkSize = newChunkSize; } +bool VPK::hasExtendedHeader() const { + return this->header1.version == 2 || this->header1.version == 54; +} + +bool VPK::hasCompression() const { + return this->header1.version == 54; +} + uint32_t VPK::getHeaderLength() const { - if (this->header1.version != 2) { + if (!this->hasExtendedHeader()) { return sizeof(Header1); } return sizeof(Header1) + sizeof(Header2);