105 lines
3.4 KiB
C++
105 lines
3.4 KiB
C++
// Copyright 2017 Citra Emulator Project
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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 <array>
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#include <memory>
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#include <string>
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#include <vector>
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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/title_metadata.h"
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namespace Loader {
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enum class ResultStatus;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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namespace FileSys {
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class FileBackend;
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constexpr size_t CIA_CONTENT_MAX_COUNT = 0x10000;
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constexpr size_t CIA_CONTENT_BITS_SIZE = (CIA_CONTENT_MAX_COUNT / 8);
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constexpr size_t CIA_HEADER_SIZE = 0x2020;
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constexpr size_t CIA_DEPENDENCY_SIZE = 0x300;
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constexpr size_t CIA_METADATA_SIZE = 0x400;
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/**
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* Helper which implements an interface to read and write CTR Installable Archive (CIA) files.
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* Data can either be loaded from a FileBackend, a string path, or from a data array. Data can
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* also be partially loaded for CIAs which are downloading/streamed in and need some metadata
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* read out.
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*/
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class CIAContainer {
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public:
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// Load whole CIAs outright
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Loader::ResultStatus Load(const FileBackend& backend);
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Loader::ResultStatus Load(const std::string& filepath);
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Loader::ResultStatus Load(const std::vector<u8>& header_data);
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// Load parts of CIAs (for CIAs streamed in)
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Loader::ResultStatus LoadHeader(const std::vector<u8>& header_data, size_t offset = 0);
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Loader::ResultStatus LoadTitleMetadata(const std::vector<u8>& tmd_data, size_t offset = 0);
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Loader::ResultStatus LoadMetadata(const std::vector<u8>& meta_data, size_t offset = 0);
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const TitleMetadata& GetTitleMetadata() const;
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std::array<u64, 0x30>& GetDependencies();
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u32 GetCoreVersion() const;
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u64 GetCertificateOffset() const;
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u64 GetTicketOffset() const;
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u64 GetTitleMetadataOffset() const;
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u64 GetMetadataOffset() const;
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u64 GetContentOffset(u16 index = 0) const;
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u32 GetCertificateSize() const;
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u32 GetTicketSize() const;
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u32 GetTitleMetadataSize() const;
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u32 GetMetadataSize() const;
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u64 GetTotalContentSize() const;
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u64 GetContentSize(u16 index = 0) const;
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void Print() const;
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private:
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struct Header {
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u32_le header_size;
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u16_le type;
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u16_le version;
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u32_le cert_size;
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u32_le tik_size;
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u32_le tmd_size;
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u32_le meta_size;
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u64_le content_size;
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std::array<u8, CIA_CONTENT_BITS_SIZE> content_present;
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bool isContentPresent(u16 index) const {
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// The content_present is a bit array which defines which content in the TMD
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// is included in the CIA, so check the bit for this index and add if set.
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// The bits in the content index are arranged w/ index 0 as the MSB, 7 as the LSB, etc.
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return (content_present[index >> 3] & (0x80 >> (index & 7)));
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}
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};
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static_assert(sizeof(Header) == CIA_HEADER_SIZE, "CIA Header structure size is wrong");
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struct Metadata {
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std::array<u64_le, 0x30> dependencies;
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std::array<u8, 0x180> reserved;
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u32_le core_version;
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std::array<u8, 0xfc> reserved_2;
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};
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static_assert(sizeof(Metadata) == CIA_METADATA_SIZE, "CIA Metadata structure size is wrong");
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Header cia_header;
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Metadata cia_metadata;
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TitleMetadata cia_tmd;
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};
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} // namespace FileSys
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