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Diffstat (limited to 'src/core/file_sys/patch_manager.cpp')
-rw-r--r-- | src/core/file_sys/patch_manager.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/core/file_sys/patch_manager.cpp b/src/core/file_sys/patch_manager.cpp new file mode 100644 index 000000000..aebc69d52 --- /dev/null +++ b/src/core/file_sys/patch_manager.cpp @@ -0,0 +1,159 @@ +// Copyright 2018 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <array> +#include <cstddef> + +#include "common/logging/log.h" +#include "core/file_sys/content_archive.h" +#include "core/file_sys/control_metadata.h" +#include "core/file_sys/patch_manager.h" +#include "core/file_sys/registered_cache.h" +#include "core/file_sys/romfs.h" +#include "core/hle/service/filesystem/filesystem.h" +#include "core/loader/loader.h" + +namespace FileSys { + +constexpr u64 SINGLE_BYTE_MODULUS = 0x100; + +std::string FormatTitleVersion(u32 version, TitleVersionFormat format) { + std::array<u8, sizeof(u32)> bytes{}; + bytes[0] = version % SINGLE_BYTE_MODULUS; + for (std::size_t i = 1; i < bytes.size(); ++i) { + version /= SINGLE_BYTE_MODULUS; + bytes[i] = version % SINGLE_BYTE_MODULUS; + } + + if (format == TitleVersionFormat::FourElements) + return fmt::format("v{}.{}.{}.{}", bytes[3], bytes[2], bytes[1], bytes[0]); + return fmt::format("v{}.{}.{}", bytes[3], bytes[2], bytes[1]); +} + +constexpr std::array<const char*, 1> PATCH_TYPE_NAMES{ + "Update", +}; + +std::string FormatPatchTypeName(PatchType type) { + return PATCH_TYPE_NAMES.at(static_cast<std::size_t>(type)); +} + +PatchManager::PatchManager(u64 title_id) : title_id(title_id) {} + +PatchManager::~PatchManager() = default; + +VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const { + LOG_INFO(Loader, "Patching ExeFS for title_id={:016X}", title_id); + + if (exefs == nullptr) + return exefs; + + const auto installed = Service::FileSystem::GetUnionContents(); + + // Game Updates + const auto update_tid = GetUpdateTitleID(title_id); + const auto update = installed->GetEntry(update_tid, ContentRecordType::Program); + if (update != nullptr) { + if (update->GetStatus() == Loader::ResultStatus::ErrorMissingBKTRBaseRomFS && + update->GetExeFS() != nullptr) { + LOG_INFO(Loader, " ExeFS: Update ({}) applied successfully", + FormatTitleVersion(installed->GetEntryVersion(update_tid).get_value_or(0))); + exefs = update->GetExeFS(); + } + } + + return exefs; +} + +VirtualFile PatchManager::PatchRomFS(VirtualFile romfs, u64 ivfc_offset, + ContentRecordType type) const { + LOG_INFO(Loader, "Patching RomFS for title_id={:016X}, type={:02X}", title_id, + static_cast<u8>(type)); + + if (romfs == nullptr) + return romfs; + + const auto installed = Service::FileSystem::GetUnionContents(); + + // Game Updates + const auto update_tid = GetUpdateTitleID(title_id); + const auto update = installed->GetEntryRaw(update_tid, type); + if (update != nullptr) { + const auto new_nca = std::make_shared<NCA>(update, romfs, ivfc_offset); + if (new_nca->GetStatus() == Loader::ResultStatus::Success && + new_nca->GetRomFS() != nullptr) { + LOG_INFO(Loader, " RomFS: Update ({}) applied successfully", + FormatTitleVersion(installed->GetEntryVersion(update_tid).get_value_or(0))); + romfs = new_nca->GetRomFS(); + } + } + + return romfs; +} + +std::map<PatchType, std::string> PatchManager::GetPatchVersionNames() const { + std::map<PatchType, std::string> out; + const auto installed = Service::FileSystem::GetUnionContents(); + + const auto update_tid = GetUpdateTitleID(title_id); + PatchManager update{update_tid}; + auto [nacp, discard_icon_file] = update.GetControlMetadata(); + + if (nacp != nullptr) { + out[PatchType::Update] = nacp->GetVersionString(); + } else { + if (installed->HasEntry(update_tid, ContentRecordType::Program)) { + const auto meta_ver = installed->GetEntryVersion(update_tid); + if (meta_ver == boost::none || meta_ver.get() == 0) { + out[PatchType::Update] = ""; + } else { + out[PatchType::Update] = + FormatTitleVersion(meta_ver.get(), TitleVersionFormat::ThreeElements); + } + } + } + + return out; +} + +std::pair<std::shared_ptr<NACP>, VirtualFile> PatchManager::GetControlMetadata() const { + const auto& installed{Service::FileSystem::GetUnionContents()}; + + const auto base_control_nca = installed->GetEntry(title_id, ContentRecordType::Control); + if (base_control_nca == nullptr) + return {}; + + return ParseControlNCA(base_control_nca); +} + +std::pair<std::shared_ptr<NACP>, VirtualFile> PatchManager::ParseControlNCA( + const std::shared_ptr<NCA>& nca) const { + const auto base_romfs = nca->GetRomFS(); + if (base_romfs == nullptr) + return {}; + + const auto romfs = PatchRomFS(base_romfs, nca->GetBaseIVFCOffset(), ContentRecordType::Control); + if (romfs == nullptr) + return {}; + + const auto extracted = ExtractRomFS(romfs); + if (extracted == nullptr) + return {}; + + auto nacp_file = extracted->GetFile("control.nacp"); + if (nacp_file == nullptr) + nacp_file = extracted->GetFile("Control.nacp"); + + const auto nacp = nacp_file == nullptr ? nullptr : std::make_shared<NACP>(nacp_file); + + VirtualFile icon_file; + for (const auto& language : FileSys::LANGUAGE_NAMES) { + icon_file = extracted->GetFile("icon_" + std::string(language) + ".dat"); + if (icon_file != nullptr) + break; + } + + return {nacp, icon_file}; +} +} // namespace FileSys |