129 lines
4.4 KiB
C++
129 lines
4.4 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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#include <cstring>
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "common/swap.h"
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#include "core/file_sys/nca_metadata.h"
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#include "core/file_sys/vfs/vfs.h"
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namespace FileSys {
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CNMT::CNMT(VirtualFile file) {
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if (file->ReadObject(&header) != sizeof(CNMTHeader))
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return;
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// If type is {Application, Update, AOC} has opt-header.
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if (header.type >= TitleType::Application && header.type <= TitleType::AOC) {
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if (file->ReadObject(&opt_header, sizeof(CNMTHeader)) != sizeof(OptionalHeader)) {
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LOG_WARNING(Loader, "Failed to read optional header.");
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}
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}
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for (u16 i = 0; i < header.number_content_entries; ++i) {
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auto& next = content_records.emplace_back(ContentRecord{});
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if (file->ReadObject(&next, sizeof(CNMTHeader) + i * sizeof(ContentRecord) +
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header.table_offset) != sizeof(ContentRecord)) {
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content_records.erase(content_records.end() - 1);
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}
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}
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for (u16 i = 0; i < header.number_meta_entries; ++i) {
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auto& next = meta_records.emplace_back(MetaRecord{});
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if (file->ReadObject(&next, sizeof(CNMTHeader) + i * sizeof(MetaRecord) +
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header.table_offset) != sizeof(MetaRecord)) {
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meta_records.erase(meta_records.end() - 1);
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}
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}
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}
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CNMT::CNMT(CNMTHeader header_, OptionalHeader opt_header_,
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std::vector<ContentRecord> content_records_, std::vector<MetaRecord> meta_records_)
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: header(std::move(header_)), opt_header(std::move(opt_header_)),
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content_records(std::move(content_records_)), meta_records(std::move(meta_records_)) {}
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CNMT::~CNMT() = default;
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const CNMTHeader& CNMT::GetHeader() const {
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return header;
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}
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u64 CNMT::GetTitleID() const {
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return header.title_id;
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}
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u32 CNMT::GetTitleVersion() const {
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return header.title_version;
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}
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TitleType CNMT::GetType() const {
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return header.type;
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}
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const std::vector<ContentRecord>& CNMT::GetContentRecords() const {
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return content_records;
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}
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const std::vector<MetaRecord>& CNMT::GetMetaRecords() const {
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return meta_records;
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}
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bool CNMT::UnionRecords(const CNMT& other) {
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bool change = false;
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for (const auto& rec : other.content_records) {
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const auto iter = std::find_if(content_records.begin(), content_records.end(),
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[&rec](const ContentRecord& r) {
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return r.nca_id == rec.nca_id && r.type == rec.type;
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});
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if (iter == content_records.end()) {
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content_records.emplace_back(rec);
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++header.number_content_entries;
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change = true;
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}
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}
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for (const auto& rec : other.meta_records) {
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const auto iter =
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std::find_if(meta_records.begin(), meta_records.end(), [&rec](const MetaRecord& r) {
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return r.title_id == rec.title_id && r.title_version == rec.title_version &&
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r.type == rec.type;
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});
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if (iter == meta_records.end()) {
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meta_records.emplace_back(rec);
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++header.number_meta_entries;
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change = true;
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}
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}
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return change;
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}
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std::vector<u8> CNMT::Serialize() const {
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const bool has_opt_header =
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header.type >= TitleType::Application && header.type <= TitleType::AOC;
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const auto dead_zone = header.table_offset + sizeof(CNMTHeader);
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std::vector<u8> out(
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std::max(sizeof(CNMTHeader) + (has_opt_header ? sizeof(OptionalHeader) : 0), dead_zone) +
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content_records.size() * sizeof(ContentRecord) + meta_records.size() * sizeof(MetaRecord));
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memcpy(out.data(), &header, sizeof(CNMTHeader));
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// Optional Header
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if (has_opt_header) {
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memcpy(out.data() + sizeof(CNMTHeader), &opt_header, sizeof(OptionalHeader));
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}
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u64_le offset = header.table_offset;
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for (const auto& rec : content_records) {
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memcpy(out.data() + offset + sizeof(CNMTHeader), &rec, sizeof(ContentRecord));
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offset += sizeof(ContentRecord);
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}
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for (const auto& rec : meta_records) {
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memcpy(out.data() + offset + sizeof(CNMTHeader), &rec, sizeof(MetaRecord));
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offset += sizeof(MetaRecord);
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}
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return out;
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}
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} // namespace FileSys
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