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99ceb03a1c
This formats all copyright comments according to SPDX formatting guidelines. Additionally, this resolves the remaining GPLv2 only licensed files by relicensing them to GPLv2.0-or-later.
146 lines
4.3 KiB
C++
146 lines
4.3 KiB
C++
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <array>
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#include <memory>
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#include <vector>
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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/crypto/key_manager.h"
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namespace FileSys {
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#pragma pack(push, 1)
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struct RelocationEntry {
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u64_le address_patch;
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u64_le address_source;
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u32 from_patch;
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};
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#pragma pack(pop)
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static_assert(sizeof(RelocationEntry) == 0x14, "RelocationEntry has incorrect size.");
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struct RelocationBucketRaw {
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INSERT_PADDING_BYTES(4);
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u32_le number_entries;
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u64_le end_offset;
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std::array<RelocationEntry, 0x332> relocation_entries;
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INSERT_PADDING_BYTES(8);
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};
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static_assert(sizeof(RelocationBucketRaw) == 0x4000, "RelocationBucketRaw has incorrect size.");
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// Vector version of RelocationBucketRaw
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struct RelocationBucket {
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u32 number_entries;
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u64 end_offset;
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std::vector<RelocationEntry> entries;
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};
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struct RelocationBlock {
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INSERT_PADDING_BYTES(4);
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u32_le number_buckets;
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u64_le size;
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std::array<u64, 0x7FE> base_offsets;
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};
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static_assert(sizeof(RelocationBlock) == 0x4000, "RelocationBlock has incorrect size.");
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struct SubsectionEntry {
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u64_le address_patch;
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INSERT_PADDING_BYTES(0x4);
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u32_le ctr;
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};
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static_assert(sizeof(SubsectionEntry) == 0x10, "SubsectionEntry has incorrect size.");
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struct SubsectionBucketRaw {
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INSERT_PADDING_BYTES(4);
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u32_le number_entries;
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u64_le end_offset;
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std::array<SubsectionEntry, 0x3FF> subsection_entries;
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};
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static_assert(sizeof(SubsectionBucketRaw) == 0x4000, "SubsectionBucketRaw has incorrect size.");
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// Vector version of SubsectionBucketRaw
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struct SubsectionBucket {
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u32 number_entries;
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u64 end_offset;
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std::vector<SubsectionEntry> entries;
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};
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struct SubsectionBlock {
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INSERT_PADDING_BYTES(4);
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u32_le number_buckets;
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u64_le size;
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std::array<u64, 0x7FE> base_offsets;
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};
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static_assert(sizeof(SubsectionBlock) == 0x4000, "SubsectionBlock has incorrect size.");
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inline RelocationBucket ConvertRelocationBucketRaw(RelocationBucketRaw raw) {
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return {raw.number_entries,
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raw.end_offset,
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{raw.relocation_entries.begin(), raw.relocation_entries.begin() + raw.number_entries}};
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}
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inline SubsectionBucket ConvertSubsectionBucketRaw(SubsectionBucketRaw raw) {
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return {raw.number_entries,
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raw.end_offset,
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{raw.subsection_entries.begin(), raw.subsection_entries.begin() + raw.number_entries}};
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}
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class BKTR : public VfsFile {
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public:
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BKTR(VirtualFile base_romfs, VirtualFile bktr_romfs, RelocationBlock relocation,
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std::vector<RelocationBucket> relocation_buckets, SubsectionBlock subsection,
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std::vector<SubsectionBucket> subsection_buckets, bool is_encrypted,
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Core::Crypto::Key128 key, u64 base_offset, u64 ivfc_offset, std::array<u8, 8> section_ctr);
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~BKTR() override;
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std::size_t Read(u8* data, std::size_t length, std::size_t offset) const override;
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std::string GetName() const override;
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std::size_t GetSize() const override;
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bool Resize(std::size_t new_size) override;
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VirtualDir GetContainingDirectory() const override;
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bool IsWritable() const override;
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bool IsReadable() const override;
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std::size_t Write(const u8* data, std::size_t length, std::size_t offset) override;
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bool Rename(std::string_view name) override;
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private:
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RelocationEntry GetRelocationEntry(u64 offset) const;
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RelocationEntry GetNextRelocationEntry(u64 offset) const;
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SubsectionEntry GetSubsectionEntry(u64 offset) const;
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SubsectionEntry GetNextSubsectionEntry(u64 offset) const;
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RelocationBlock relocation;
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std::vector<RelocationBucket> relocation_buckets;
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SubsectionBlock subsection;
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std::vector<SubsectionBucket> subsection_buckets;
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// Should be the raw base romfs, decrypted.
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VirtualFile base_romfs;
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// Should be the raw BKTR romfs, (located at media_offset with size media_size).
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VirtualFile bktr_romfs;
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bool encrypted;
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Core::Crypto::Key128 key;
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// Base offset into NCA, used for IV calculation.
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u64 base_offset;
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// Distance between IVFC start and RomFS start, used for base reads
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u64 ivfc_offset;
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std::array<u8, 8> section_ctr;
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};
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} // namespace FileSys
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