mirror of
https://github.com/yuzu-emu/yuzu-android.git
synced 2025-02-09 22:33:06 +01:00
77c684c114
* Add VfsFile and VfsDirectory classes * Finish abstract Vfs classes * Implement RealVfsFile (computer fs backend) * Finish RealVfsFile and RealVfsDirectory * Finished OffsetVfsFile * More changes * Fix import paths * Major refactor * Remove double const * Use experimental/filesystem or filesystem depending on compiler * Port partition_filesystem * More changes * More Overhaul * FSP_SRV fixes * Fixes and testing * Try to get filesystem to compile * Filesystem on linux * Remove std::filesystem and document/test * Compile fixes * Missing include * Bug fixes * Fixes * Rename v_file and v_dir * clang-format fix * Rename NGLOG_* to LOG_* * Most review changes * Fix TODO * Guess 'main' to be Directory by filename
90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
// 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 "common/common_funcs.h"
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#include "common/common_types.h"
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#include "common/swap.h"
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#include "core/file_sys/partition_filesystem.h"
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namespace FileSys {
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enum class NCAContentType : u8 { Program = 0, Meta = 1, Control = 2, Manual = 3, Data = 4 };
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struct NCASectionTableEntry {
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u32_le media_offset;
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u32_le media_end_offset;
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INSERT_PADDING_BYTES(0x8);
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};
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static_assert(sizeof(NCASectionTableEntry) == 0x10, "NCASectionTableEntry has incorrect size.");
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struct NCAHeader {
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std::array<u8, 0x100> rsa_signature_1;
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std::array<u8, 0x100> rsa_signature_2;
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u32_le magic;
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u8 is_system;
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NCAContentType content_type;
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u8 crypto_type;
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u8 key_index;
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u64_le size;
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u64_le title_id;
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INSERT_PADDING_BYTES(0x4);
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u32_le sdk_version;
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u8 crypto_type_2;
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INSERT_PADDING_BYTES(15);
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std::array<u8, 0x10> rights_id;
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std::array<NCASectionTableEntry, 0x4> section_tables;
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std::array<std::array<u8, 0x20>, 0x4> hash_tables;
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std::array<std::array<u8, 0x10>, 0x4> key_area;
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INSERT_PADDING_BYTES(0xC0);
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};
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static_assert(sizeof(NCAHeader) == 0x400, "NCAHeader has incorrect size.");
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static bool IsDirectoryExeFS(std::shared_ptr<FileSys::VfsDirectory> pfs) {
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// According to switchbrew, an exefs must only contain these two files:
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return pfs->GetFile("main") != nullptr && pfs->GetFile("main.npdm") != nullptr;
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}
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static bool IsValidNCA(const NCAHeader& header) {
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return header.magic == Common::MakeMagic('N', 'C', 'A', '2') ||
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header.magic == Common::MakeMagic('N', 'C', 'A', '3');
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}
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// An implementation of VfsDirectory that represents a Nintendo Content Archive (NCA) conatiner.
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// After construction, use GetStatus to determine if the file is valid and ready to be used.
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class NCA : public ReadOnlyVfsDirectory {
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public:
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explicit NCA(VirtualFile file);
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Loader::ResultStatus GetStatus() const;
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std::vector<std::shared_ptr<VfsFile>> GetFiles() const override;
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std::vector<std::shared_ptr<VfsDirectory>> GetSubdirectories() const override;
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std::string GetName() const override;
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std::shared_ptr<VfsDirectory> GetParentDirectory() const override;
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NCAContentType GetType() const;
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u64 GetTitleId() const;
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VirtualFile GetRomFS() const;
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VirtualDir GetExeFS() const;
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protected:
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bool ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) override;
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private:
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std::vector<VirtualDir> dirs;
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std::vector<VirtualFile> files;
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VirtualFile romfs = nullptr;
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VirtualDir exefs = nullptr;
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VirtualFile file;
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NCAHeader header{};
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Loader::ResultStatus status{};
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};
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} // namespace FileSys
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