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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstring>
#include "common/common_funcs.h"
#include "common/swap.h"
#include "content_archive.h"
#include "core/file_sys/nca_metadata.h"
namespace FileSys {
CNMT::CNMT(VirtualFile file_) : file(std::move(file_)), header(std::make_unique<CNMTHeader>()) {
if (file->ReadObject(header.get()) != sizeof(CNMTHeader))
return;
// If type is {Application, Update, AOC} has opt-header.
if (static_cast<u8>(header->type) >= 0x80 && static_cast<u8>(header->type) <= 0x82) {
opt_header = std::make_unique<OptionalHeader>();
if (file->ReadObject(opt_header.get(), sizeof(CNMTHeader)) != sizeof(OptionalHeader)) {
opt_header = nullptr;
}
}
for (u16 i = 0; i < header->number_content_entries; ++i) {
auto& next = content_records.emplace_back(ContentRecord{});
if (file->ReadObject(&next, sizeof(CNMTHeader) + i * sizeof(ContentRecord) +
header->table_offset) != sizeof(ContentRecord)) {
content_records.erase(content_records.end() - 1);
}
}
for (u16 i = 0; i < header->number_meta_entries; ++i) {
auto& next = meta_records.emplace_back(MetaRecord{});
if (file->ReadObject(&next, sizeof(CNMTHeader) + i * sizeof(MetaRecord) +
header->table_offset) != sizeof(MetaRecord)) {
meta_records.erase(meta_records.end() - 1);
}
}
}
CNMT::CNMT(CNMTHeader header, OptionalHeader opt_header, std::vector<ContentRecord> content_records,
std::vector<MetaRecord> meta_records)
: file(nullptr), header(std::make_unique<CNMTHeader>(std::move(header))),
opt_header(std::make_unique<OptionalHeader>(std::move(opt_header))),
content_records(std::move(content_records)), meta_records(std::move(meta_records)) {}
u64 CNMT::GetTitleID() const {
return header->title_id;
}
u32 CNMT::GetTitleVersion() const {
return header->title_version;
}
TitleType CNMT::GetType() const {
return header->type;
}
const std::vector<ContentRecord>& CNMT::GetContentRecords() const {
return content_records;
}
const std::vector<MetaRecord>& CNMT::GetMetaRecords() const {
return meta_records;
}
bool CNMT::UnionRecords(const CNMT& other) {
bool change = false;
for (const auto& rec : other.content_records) {
const auto iter = std::find_if(content_records.begin(), content_records.end(),
[&rec](const ContentRecord& r) {
return r.nca_id == rec.nca_id && r.type == rec.type;
});
if (iter == content_records.end()) {
content_records.emplace_back(rec);
++header->number_content_entries;
change = true;
}
}
for (const auto& rec : other.meta_records) {
const auto iter =
std::find_if(meta_records.begin(), meta_records.end(), [&rec](const MetaRecord& r) {
return r.title_id == rec.title_id && r.title_version == rec.title_version &&
r.type == rec.type;
});
if (iter == meta_records.end()) {
meta_records.emplace_back(rec);
++header->number_meta_entries;
change = true;
}
}
return change;
}
std::vector<u8> CNMT::Serialize() const {
if (header == nullptr)
return {};
std::vector<u8> out(sizeof(CNMTHeader));
out.reserve(0x100); // Avoid resizing -- average size.
memcpy(out.data(), header.get(), sizeof(CNMTHeader));
if (opt_header != nullptr) {
out.resize(out.size() + sizeof(OptionalHeader));
memcpy(out.data() + sizeof(CNMTHeader), opt_header.get(), sizeof(OptionalHeader));
}
auto offset = header->table_offset;
const auto dead_zone = offset + sizeof(CNMTHeader) - out.size();
if (dead_zone > 0)
out.resize(offset + sizeof(CNMTHeader));
for (const auto& rec : content_records) {
out.resize(out.size() + sizeof(ContentRecord));
memcpy(out.data() + offset + sizeof(CNMTHeader), &rec, sizeof(ContentRecord));
offset += sizeof(ContentRecord);
}
for (const auto& rec : meta_records) {
out.resize(out.size() + sizeof(MetaRecord));
memcpy(out.data() + offset + sizeof(CNMTHeader), &rec, sizeof(MetaRecord));
offset += sizeof(MetaRecord);
}
return out;
}
} // namespace FileSys
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