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file_sys: Add class to manage game patches
Right now only includes Updates, but should eventually contain all of the other patches we need.
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2 changed files with 132 additions and 0 deletions
90
src/core/file_sys/patch_manager.cpp
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90
src/core/file_sys/patch_manager.cpp
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// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "core/file_sys/patch_manager.h"
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#include "core/file_sys/registered_cache.h"
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#include "core/hle/service/filesystem/filesystem.h"
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namespace FileSys {
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union TitleVersion {
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u32 version;
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struct {
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u8 v_revision;
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u8 v_micro;
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u8 v_minor;
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u8 v_major;
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};
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};
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std::string FormatTitleVersion(u32 version_, bool full) {
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TitleVersion ver{};
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ver.version = version_;
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if (full)
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return fmt::format("v{}.{}.{}.{}", ver.v_major, ver.v_minor, ver.v_minor, ver.v_revision);
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return fmt::format("v{}.{}.{}", ver.v_major, ver.v_minor, ver.v_micro);
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}
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constexpr std::array<const char*, 1> PATCH_TYPE_NAMES{
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"Update",
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};
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std::string FormatPatchTypeName(PatchType type) {
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return PATCH_TYPE_NAMES.at(static_cast<size_t>(type));
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}
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PatchManager::PatchManager(u64 title_id) : title_id(title_id) {}
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VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const {
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if (exefs == nullptr)
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return exefs;
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const auto installed = Service::FileSystem::GetUnionContents();
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// Game Updates
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const auto update_tid = GetUpdateTitleID(title_id);
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const auto update = installed->GetEntry(update_tid, ContentRecordType::Program);
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if (update != nullptr) {
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if (update->GetStatus() == Loader::ResultStatus::ErrorMissingBKTRBaseRomFS &&
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update->GetExeFS() != nullptr)
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exefs = update->GetExeFS();
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}
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return exefs;
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}
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VirtualFile PatchManager::PatchRomFS(VirtualFile romfs) const {
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if (romfs == nullptr)
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return romfs;
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const auto installed = Service::FileSystem::GetUnionContents();
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// Game Updates
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const auto update_tid = GetUpdateTitleID(title_id);
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const auto update = installed->GetEntryRaw(update_tid, ContentRecordType::Program);
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if (update != nullptr) {
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const auto nca = std::make_shared<NCA>(update, romfs);
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if (nca->GetStatus() == Loader::ResultStatus::Success && nca->GetRomFS() != nullptr)
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romfs = nca->GetRomFS();
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}
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return romfs;
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}
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std::map<PatchType, u32> PatchManager::GetPatchVersionNames() const {
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std::map<PatchType, u32> out;
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const auto installed = Service::FileSystem::GetUnionContents();
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const auto update_tid = GetUpdateTitleID(title_id);
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const auto update_version = installed->GetEntryVersion(update_tid);
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if (update_version != boost::none &&
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installed->HasEntry(update_tid, ContentRecordType::Program))
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out[PatchType::Update] = update_version.get();
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return out;
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}
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} // namespace FileSys
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42
src/core/file_sys/patch_manager.h
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42
src/core/file_sys/patch_manager.h
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// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <map>
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#include "common/common_types.h"
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#include "core/file_sys/vfs.h"
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namespace FileSys {
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std::string FormatTitleVersion(u32 version, bool full = false);
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enum class PatchType {
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Update,
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};
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std::string FormatPatchTypeName(PatchType type);
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// A centralized class to manage patches to games.
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class PatchManager {
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public:
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explicit PatchManager(u64 title_id);
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// Currently tracked ExeFS patches:
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// - Game Updates
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VirtualDir PatchExeFS(VirtualDir exefs) const;
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// Currently tracked RomFS patches:
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// - Game Updates
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VirtualFile PatchRomFS(VirtualFile romfs) const;
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// Returns a vector of pairs between patch names and patch versions.
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// i.e. Update v80 will return {Update, 80}
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std::map<PatchType, u32> GetPatchVersionNames() const;
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private:
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u64 title_id;
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};
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} // namespace FileSys
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