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// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <map>
#include <memory>
#include <optional>
#include <string>
#include "common/common_types.h"
#include "core/file_sys/nca_metadata.h"
#include "core/file_sys/vfs_types.h"
#include "core/memory/dmnt_cheat_types.h"
namespace Core {
class System;
}
namespace Service::FileSystem {
class FileSystemController;
}
namespace FileSys {
class ContentProvider;
class NCA;
class NACP;
enum class PatchType { Update, DLC, Mod };
struct Patch {
bool enabled;
std::string name;
std::string version;
PatchType type;
u64 program_id;
u64 title_id;
};
// A centralized class to manage patches to games.
class PatchManager {
public:
using BuildID = std::array<u8, 0x20>;
using Metadata = std::pair<std::unique_ptr<NACP>, VirtualFile>;
explicit PatchManager(u64 title_id_,
const Service::FileSystem::FileSystemController& fs_controller_,
const ContentProvider& content_provider_);
~PatchManager();
[[nodiscard]] u64 GetTitleID() const;
// Currently tracked ExeFS patches:
// - Game Updates
[[nodiscard]] VirtualDir PatchExeFS(VirtualDir exefs) const;
// Currently tracked NSO patches:
// - IPS
// - IPSwitch
[[nodiscard]] std::vector<u8> PatchNSO(const std::vector<u8>& nso,
const std::string& name) const;
// Checks to see if PatchNSO() will have any effect given the NSO's build ID.
// Used to prevent expensive copies in NSO loader.
[[nodiscard]] bool HasNSOPatch(const BuildID& build_id, std::string_view name) const;
// Creates a CheatList object with all
[[nodiscard]] std::vector<Core::Memory::CheatEntry> CreateCheatList(
const BuildID& build_id) const;
// Currently tracked RomFS patches:
// - Game Updates
// - LayeredFS
[[nodiscard]] VirtualFile PatchRomFS(const NCA* base_nca, VirtualFile base_romfs,
ContentRecordType type = ContentRecordType::Program,
VirtualFile packed_update_raw = nullptr,
bool apply_layeredfs = true) const;
// Returns a vector of patches
[[nodiscard]] std::vector<Patch> GetPatches(VirtualFile update_raw = nullptr) const;
// If the game update exists, returns the u32 version field in its Meta-type NCA. If that fails,
// it will fallback to the Meta-type NCA of the base game. If that fails, the result will be
// std::nullopt
[[nodiscard]] std::optional<u32> GetGameVersion() const;
// Given title_id of the program, attempts to get the control data of the update and parse
// it, falling back to the base control data.
[[nodiscard]] Metadata GetControlMetadata() const;
// Version of GetControlMetadata that takes an arbitrary NCA
[[nodiscard]] Metadata ParseControlNCA(const NCA& nca) const;
private:
[[nodiscard]] std::vector<VirtualFile> CollectPatches(const std::vector<VirtualDir>& patch_dirs,
const std::string& build_id) const;
u64 title_id;
const Service::FileSystem::FileSystemController& fs_controller;
const ContentProvider& content_provider;
};
} // namespace FileSys
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