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suyu/src/core/file_sys/registered_cache.cpp

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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <regex>
#include <mbedtls/sha256.h>
#include "common/assert.h"
#include "common/file_util.h"
#include "common/hex_util.h"
#include "common/logging/log.h"
#include "core/crypto/key_manager.h"
#include "core/file_sys/card_image.h"
#include "core/file_sys/content_archive.h"
#include "core/file_sys/nca_metadata.h"
#include "core/file_sys/registered_cache.h"
#include "core/file_sys/submission_package.h"
#include "core/file_sys/vfs_concat.h"
#include "core/loader/loader.h"
namespace FileSys {
// The size of blocks to use when vfs raw copying into nand.
constexpr size_t VFS_RC_LARGE_COPY_BLOCK = 0x400000;
std::string ContentProviderEntry::DebugInfo() const {
return fmt::format("title_id={:016X}, content_type={:02X}", title_id, static_cast<u8>(type));
}
bool operator<(const ContentProviderEntry& lhs, const ContentProviderEntry& rhs) {
return (lhs.title_id < rhs.title_id) || (lhs.title_id == rhs.title_id && lhs.type < rhs.type);
}
bool operator==(const ContentProviderEntry& lhs, const ContentProviderEntry& rhs) {
return std::tie(lhs.title_id, lhs.type) == std::tie(rhs.title_id, rhs.type);
}
bool operator!=(const ContentProviderEntry& lhs, const ContentProviderEntry& rhs) {
return !operator==(lhs, rhs);
}
static bool FollowsTwoDigitDirFormat(std::string_view name) {
static const std::regex two_digit_regex("000000[0-9A-F]{2}", std::regex_constants::ECMAScript |
std::regex_constants::icase);
return std::regex_match(name.begin(), name.end(), two_digit_regex);
}
static bool FollowsNcaIdFormat(std::string_view name) {
static const std::regex nca_id_regex("[0-9A-F]{32}\\.nca", std::regex_constants::ECMAScript |
std::regex_constants::icase);
return name.size() == 36 && std::regex_match(name.begin(), name.end(), nca_id_regex);
}
static std::string GetRelativePathFromNcaID(const std::array<u8, 16>& nca_id, bool second_hex_upper,
bool within_two_digit) {
if (!within_two_digit) {
return fmt::format("/{}.nca", Common::HexToString(nca_id, second_hex_upper));
}
Core::Crypto::SHA256Hash hash{};
mbedtls_sha256(nca_id.data(), nca_id.size(), hash.data(), 0);
return fmt::format("/000000{:02X}/{}.nca", hash[0],
Common::HexToString(nca_id, second_hex_upper));
}
static std::string GetCNMTName(TitleType type, u64 title_id) {
constexpr std::array<const char*, 9> TITLE_TYPE_NAMES{
"SystemProgram",
"SystemData",
"SystemUpdate",
"BootImagePackage",
"BootImagePackageSafe",
"Application",
"Patch",
"AddOnContent",
"" ///< Currently unknown 'DeltaTitle'
};
auto index = static_cast<std::size_t>(type);
// If the index is after the jump in TitleType, subtract it out.
if (index >= static_cast<std::size_t>(TitleType::Application)) {
index -= static_cast<std::size_t>(TitleType::Application) -
static_cast<std::size_t>(TitleType::FirmwarePackageB);
}
return fmt::format("{}_{:016x}.cnmt", TITLE_TYPE_NAMES[index], title_id);
}
ContentRecordType GetCRTypeFromNCAType(NCAContentType type) {
switch (type) {
case NCAContentType::Program:
// TODO(DarkLordZach): Differentiate between Program and Patch
return ContentRecordType::Program;
case NCAContentType::Meta:
return ContentRecordType::Meta;
case NCAContentType::Control:
return ContentRecordType::Control;
case NCAContentType::Data:
case NCAContentType::PublicData:
return ContentRecordType::Data;
case NCAContentType::Manual:
// TODO(DarkLordZach): Peek at NCA contents to differentiate Manual and Legal.
return ContentRecordType::HtmlDocument;
default:
UNREACHABLE_MSG("Invalid NCAContentType={:02X}", static_cast<u8>(type));
}
}
ContentProvider::~ContentProvider() = default;
bool ContentProvider::HasEntry(ContentProviderEntry entry) const {
return HasEntry(entry.title_id, entry.type);
}
VirtualFile ContentProvider::GetEntryUnparsed(ContentProviderEntry entry) const {
return GetEntryUnparsed(entry.title_id, entry.type);
}
VirtualFile ContentProvider::GetEntryRaw(ContentProviderEntry entry) const {
return GetEntryRaw(entry.title_id, entry.type);
}
std::unique_ptr<NCA> ContentProvider::GetEntry(ContentProviderEntry entry) const {
return GetEntry(entry.title_id, entry.type);
}
std::vector<ContentProviderEntry> ContentProvider::ListEntries() const {
return ListEntriesFilter(std::nullopt, std::nullopt, std::nullopt);
}
VirtualFile RegisteredCache::OpenFileOrDirectoryConcat(const VirtualDir& dir,
std::string_view path) const {
const auto file = dir->GetFileRelative(path);
if (file != nullptr) {
return file;
}
const auto nca_dir = dir->GetDirectoryRelative(path);
if (nca_dir == nullptr) {
return nullptr;
}
const auto files = nca_dir->GetFiles();
if (files.size() == 1 && files[0]->GetName() == "00") {
return files[0];
}
std::vector<VirtualFile> concat;
// Since the files are a two-digit hex number, max is FF.
for (std::size_t i = 0; i < 0x100; ++i) {
auto next = nca_dir->GetFile(fmt::format("{:02X}", i));
if (next != nullptr) {
concat.push_back(std::move(next));
} else {
next = nca_dir->GetFile(fmt::format("{:02x}", i));
if (next != nullptr) {
concat.push_back(std::move(next));
} else {
break;
}
}
}
if (concat.empty()) {
return nullptr;
}
return ConcatenatedVfsFile::MakeConcatenatedFile(concat, concat.front()->GetName());
}
VirtualFile RegisteredCache::GetFileAtID(NcaID id) const {
VirtualFile file;
// Try all four modes of file storage:
// (bit 1 = uppercase/lower, bit 0 = within a two-digit dir)
// 00: /000000**/{:032X}.nca
// 01: /{:032X}.nca
// 10: /000000**/{:032x}.nca
// 11: /{:032x}.nca
for (u8 i = 0; i < 4; ++i) {
const auto path = GetRelativePathFromNcaID(id, (i & 0b10) == 0, (i & 0b01) == 0);
file = OpenFileOrDirectoryConcat(dir, path);
if (file != nullptr)
return file;
}
return file;
}
static std::optional<NcaID> CheckMapForContentRecord(const std::map<u64, CNMT>& map, u64 title_id,
ContentRecordType type) {
if (map.find(title_id) == map.end())
return {};
const auto& cnmt = map.at(title_id);
const auto iter = std::find_if(cnmt.GetContentRecords().begin(), cnmt.GetContentRecords().end(),
[type](const ContentRecord& rec) { return rec.type == type; });
if (iter == cnmt.GetContentRecords().end())
return {};
return std::make_optional(iter->nca_id);
}
std::optional<NcaID> RegisteredCache::GetNcaIDFromMetadata(u64 title_id,
ContentRecordType type) const {
if (type == ContentRecordType::Meta && meta_id.find(title_id) != meta_id.end())
return meta_id.at(title_id);
const auto res1 = CheckMapForContentRecord(yuzu_meta, title_id, type);
if (res1)
return res1;
return CheckMapForContentRecord(meta, title_id, type);
}
std::vector<NcaID> RegisteredCache::AccumulateFiles() const {
std::vector<NcaID> ids;
for (const auto& d2_dir : dir->GetSubdirectories()) {
if (FollowsNcaIdFormat(d2_dir->GetName())) {
ids.push_back(Common::HexStringToArray<0x10, true>(d2_dir->GetName().substr(0, 0x20)));
continue;
}
if (!FollowsTwoDigitDirFormat(d2_dir->GetName()))
continue;
for (const auto& nca_dir : d2_dir->GetSubdirectories()) {
if (!FollowsNcaIdFormat(nca_dir->GetName()))
continue;
ids.push_back(Common::HexStringToArray<0x10, true>(nca_dir->GetName().substr(0, 0x20)));
}
for (const auto& nca_file : d2_dir->GetFiles()) {
if (!FollowsNcaIdFormat(nca_file->GetName()))
continue;
ids.push_back(
Common::HexStringToArray<0x10, true>(nca_file->GetName().substr(0, 0x20)));
}
}
for (const auto& d2_file : dir->GetFiles()) {
if (FollowsNcaIdFormat(d2_file->GetName()))
ids.push_back(Common::HexStringToArray<0x10, true>(d2_file->GetName().substr(0, 0x20)));
}
return ids;
}
void RegisteredCache::ProcessFiles(const std::vector<NcaID>& ids) {
for (const auto& id : ids) {
const auto file = GetFileAtID(id);
if (file == nullptr)
continue;
const auto nca = std::make_shared<NCA>(parser(file, id), nullptr, 0, keys);
if (nca->GetStatus() != Loader::ResultStatus::Success ||
nca->GetType() != NCAContentType::Meta) {
continue;
}
const auto section0 = nca->GetSubdirectories()[0];
for (const auto& section0_file : section0->GetFiles()) {
if (section0_file->GetExtension() != "cnmt")
continue;
meta.insert_or_assign(nca->GetTitleId(), CNMT(section0_file));
meta_id.insert_or_assign(nca->GetTitleId(), id);
break;
}
}
}
void RegisteredCache::AccumulateYuzuMeta() {
const auto dir = this->dir->GetSubdirectory("yuzu_meta");
if (dir == nullptr)
return;
for (const auto& file : dir->GetFiles()) {
if (file->GetExtension() != "cnmt")
continue;
CNMT cnmt(file);
yuzu_meta.insert_or_assign(cnmt.GetTitleID(), std::move(cnmt));
}
}
void RegisteredCache::Refresh() {
if (dir == nullptr)
return;
const auto ids = AccumulateFiles();
ProcessFiles(ids);
AccumulateYuzuMeta();
}
RegisteredCache::RegisteredCache(VirtualDir dir_, ContentProviderParsingFunction parsing_function)
: dir(std::move(dir_)), parser(std::move(parsing_function)) {
Refresh();
}
RegisteredCache::~RegisteredCache() = default;
bool RegisteredCache::HasEntry(u64 title_id, ContentRecordType type) const {
return GetEntryRaw(title_id, type) != nullptr;
}
VirtualFile RegisteredCache::GetEntryUnparsed(u64 title_id, ContentRecordType type) const {
const auto id = GetNcaIDFromMetadata(title_id, type);
return id ? GetFileAtID(*id) : nullptr;
}
std::optional<u32> RegisteredCache::GetEntryVersion(u64 title_id) const {
const auto meta_iter = meta.find(title_id);
if (meta_iter != meta.end())
return meta_iter->second.GetTitleVersion();
const auto yuzu_meta_iter = yuzu_meta.find(title_id);
if (yuzu_meta_iter != yuzu_meta.end())
return yuzu_meta_iter->second.GetTitleVersion();
return {};
}
VirtualFile RegisteredCache::GetEntryRaw(u64 title_id, ContentRecordType type) const {
const auto id = GetNcaIDFromMetadata(title_id, type);
return id ? parser(GetFileAtID(*id), *id) : nullptr;
}
std::unique_ptr<NCA> RegisteredCache::GetEntry(u64 title_id, ContentRecordType type) const {
const auto raw = GetEntryRaw(title_id, type);
if (raw == nullptr)
return nullptr;
return std::make_unique<NCA>(raw, nullptr, 0, keys);
}
template <typename T>
void RegisteredCache::IterateAllMetadata(
std::vector<T>& out, std::function<T(const CNMT&, const ContentRecord&)> proc,
std::function<bool(const CNMT&, const ContentRecord&)> filter) const {
for (const auto& kv : meta) {
const auto& cnmt = kv.second;
if (filter(cnmt, EMPTY_META_CONTENT_RECORD))
out.push_back(proc(cnmt, EMPTY_META_CONTENT_RECORD));
for (const auto& rec : cnmt.GetContentRecords()) {
if (GetFileAtID(rec.nca_id) != nullptr && filter(cnmt, rec)) {
out.push_back(proc(cnmt, rec));
}
}
}
for (const auto& kv : yuzu_meta) {
const auto& cnmt = kv.second;
for (const auto& rec : cnmt.GetContentRecords()) {
if (GetFileAtID(rec.nca_id) != nullptr && filter(cnmt, rec)) {
out.push_back(proc(cnmt, rec));
}
}
}
}
std::vector<ContentProviderEntry> RegisteredCache::ListEntriesFilter(
std::optional<TitleType> title_type, std::optional<ContentRecordType> record_type,
std::optional<u64> title_id) const {
std::vector<ContentProviderEntry> out;
IterateAllMetadata<ContentProviderEntry>(
out,
[](const CNMT& c, const ContentRecord& r) {
return ContentProviderEntry{c.GetTitleID(), r.type};
},
[&title_type, &record_type, &title_id](const CNMT& c, const ContentRecord& r) {
if (title_type && *title_type != c.GetType())
return false;
if (record_type && *record_type != r.type)
return false;
if (title_id && *title_id != c.GetTitleID())
return false;
return true;
});
return out;
}
static std::shared_ptr<NCA> GetNCAFromNSPForID(const NSP& nsp, const NcaID& id) {
auto file = nsp.GetFile(fmt::format("{}.nca", Common::HexToString(id, false)));
if (file == nullptr) {
return nullptr;
}
return std::make_shared<NCA>(std::move(file));
}
InstallResult RegisteredCache::InstallEntry(const XCI& xci, bool overwrite_if_exists,
const VfsCopyFunction& copy) {
return InstallEntry(*xci.GetSecurePartitionNSP(), overwrite_if_exists, copy);
}
InstallResult RegisteredCache::InstallEntry(const NSP& nsp, bool overwrite_if_exists,
const VfsCopyFunction& copy) {
const auto ncas = nsp.GetNCAsCollapsed();
const auto meta_iter = std::find_if(ncas.begin(), ncas.end(), [](const auto& nca) {
return nca->GetType() == NCAContentType::Meta;
});
if (meta_iter == ncas.end()) {
LOG_ERROR(Loader, "The file you are attempting to install does not have a metadata NCA and "
"is therefore malformed. Check your encryption keys.");
return InstallResult::ErrorMetaFailed;
}
// Install Metadata File
const auto meta_id_raw = (*meta_iter)->GetName().substr(0, 32);
const auto meta_id = Common::HexStringToArray<16>(meta_id_raw);
const auto res = RawInstallNCA(**meta_iter, copy, overwrite_if_exists, meta_id);
if (res != InstallResult::Success)
return res;
// Install all the other NCAs
const auto section0 = (*meta_iter)->GetSubdirectories()[0];
const auto cnmt_file = section0->GetFiles()[0];
const CNMT cnmt(cnmt_file);
for (const auto& record : cnmt.GetContentRecords()) {
// Ignore DeltaFragments, they are not useful to us
if (record.type == ContentRecordType::DeltaFragment)
continue;
const auto nca = GetNCAFromNSPForID(nsp, record.nca_id);
if (nca == nullptr)
return InstallResult::ErrorCopyFailed;
const auto res2 = RawInstallNCA(*nca, copy, overwrite_if_exists, record.nca_id);
if (res2 != InstallResult::Success)
return res2;
}
Refresh();
return InstallResult::Success;
}
InstallResult RegisteredCache::InstallEntry(const NCA& nca, TitleType type,
bool overwrite_if_exists, const VfsCopyFunction& copy) {
CNMTHeader header{
nca.GetTitleId(), ///< Title ID
0, ///< Ignore/Default title version
type, ///< Type
{}, ///< Padding
0x10, ///< Default table offset
1, ///< 1 Content Entry
0, ///< No Meta Entries
{}, ///< Padding
};
OptionalHeader opt_header{0, 0};
ContentRecord c_rec{{}, {}, {}, GetCRTypeFromNCAType(nca.GetType()), {}};
const auto& data = nca.GetBaseFile()->ReadBytes(0x100000);
mbedtls_sha256(data.data(), data.size(), c_rec.hash.data(), 0);
memcpy(&c_rec.nca_id, &c_rec.hash, 16);
const CNMT new_cnmt(header, opt_header, {c_rec}, {});
if (!RawInstallYuzuMeta(new_cnmt))
return InstallResult::ErrorMetaFailed;
return RawInstallNCA(nca, copy, overwrite_if_exists, c_rec.nca_id);
}
InstallResult RegisteredCache::RawInstallNCA(const NCA& nca, const VfsCopyFunction& copy,
bool overwrite_if_exists,
std::optional<NcaID> override_id) {
const auto in = nca.GetBaseFile();
Core::Crypto::SHA256Hash hash{};
// Calculate NcaID
// NOTE: Because computing the SHA256 of an entire NCA is quite expensive (especially if the
// game is massive), we're going to cheat and only hash the first MB of the NCA.
// Also, for XCIs the NcaID matters, so if the override id isn't none, use that.
NcaID id{};
if (override_id) {
id = *override_id;
} else {
const auto& data = in->ReadBytes(0x100000);
mbedtls_sha256(data.data(), data.size(), hash.data(), 0);
memcpy(id.data(), hash.data(), 16);
}
std::string path = GetRelativePathFromNcaID(id, false, true);
if (GetFileAtID(id) != nullptr && !overwrite_if_exists) {
LOG_WARNING(Loader, "Attempting to overwrite existing NCA. Skipping...");
return InstallResult::ErrorAlreadyExists;
}
if (GetFileAtID(id) != nullptr) {
LOG_WARNING(Loader, "Overwriting existing NCA...");
VirtualDir c_dir;
{ c_dir = dir->GetFileRelative(path)->GetContainingDirectory(); }
c_dir->DeleteFile(FileUtil::GetFilename(path));
}
auto out = dir->CreateFileRelative(path);
if (out == nullptr)
return InstallResult::ErrorCopyFailed;
return copy(in, out, VFS_RC_LARGE_COPY_BLOCK) ? InstallResult::Success
: InstallResult::ErrorCopyFailed;
}
bool RegisteredCache::RawInstallYuzuMeta(const CNMT& cnmt) {
// Reasoning behind this method can be found in the comment for InstallEntry, NCA overload.
const auto dir = this->dir->CreateDirectoryRelative("yuzu_meta");
const auto filename = GetCNMTName(cnmt.GetType(), cnmt.GetTitleID());
if (dir->GetFile(filename) == nullptr) {
auto out = dir->CreateFile(filename);
const auto buffer = cnmt.Serialize();
out->Resize(buffer.size());
out->WriteBytes(buffer);
} else {
auto out = dir->GetFile(filename);
CNMT old_cnmt(out);
// Returns true on change
if (old_cnmt.UnionRecords(cnmt)) {
out->Resize(0);
const auto buffer = old_cnmt.Serialize();
out->Resize(buffer.size());
out->WriteBytes(buffer);
}
}
Refresh();
return std::find_if(yuzu_meta.begin(), yuzu_meta.end(),
[&cnmt](const std::pair<u64, CNMT>& kv) {
return kv.second.GetType() == cnmt.GetType() &&
kv.second.GetTitleID() == cnmt.GetTitleID();
}) != yuzu_meta.end();
}
ContentProviderUnion::~ContentProviderUnion() = default;
void ContentProviderUnion::SetSlot(ContentProviderUnionSlot slot, ContentProvider* provider) {
providers[slot] = provider;
}
void ContentProviderUnion::ClearSlot(ContentProviderUnionSlot slot) {
providers[slot] = nullptr;
}
void ContentProviderUnion::Refresh() {
for (auto& provider : providers) {
if (provider.second == nullptr)
continue;
provider.second->Refresh();
}
}
bool ContentProviderUnion::HasEntry(u64 title_id, ContentRecordType type) const {
for (const auto& provider : providers) {
if (provider.second == nullptr)
continue;
if (provider.second->HasEntry(title_id, type))
return true;
}
return false;
}
std::optional<u32> ContentProviderUnion::GetEntryVersion(u64 title_id) const {
for (const auto& provider : providers) {
if (provider.second == nullptr)
continue;
const auto res = provider.second->GetEntryVersion(title_id);
if (res != std::nullopt)
return res;
}
return std::nullopt;
}
VirtualFile ContentProviderUnion::GetEntryUnparsed(u64 title_id, ContentRecordType type) const {
for (const auto& provider : providers) {
if (provider.second == nullptr)
continue;
const auto res = provider.second->GetEntryUnparsed(title_id, type);
if (res != nullptr)
return res;
}
return nullptr;
}
VirtualFile ContentProviderUnion::GetEntryRaw(u64 title_id, ContentRecordType type) const {
for (const auto& provider : providers) {
if (provider.second == nullptr)
continue;
const auto res = provider.second->GetEntryRaw(title_id, type);
if (res != nullptr)
return res;
}
return nullptr;
}
std::unique_ptr<NCA> ContentProviderUnion::GetEntry(u64 title_id, ContentRecordType type) const {
for (const auto& provider : providers) {
if (provider.second == nullptr)
continue;
auto res = provider.second->GetEntry(title_id, type);
if (res != nullptr)
return res;
}
return nullptr;
}
std::vector<ContentProviderEntry> ContentProviderUnion::ListEntriesFilter(
std::optional<TitleType> title_type, std::optional<ContentRecordType> record_type,
std::optional<u64> title_id) const {
std::vector<ContentProviderEntry> out;
for (const auto& provider : providers) {
if (provider.second == nullptr)
continue;
const auto vec = provider.second->ListEntriesFilter(title_type, record_type, title_id);
std::copy(vec.begin(), vec.end(), std::back_inserter(out));
}
std::sort(out.begin(), out.end());
out.erase(std::unique(out.begin(), out.end()), out.end());
return out;
}
std::vector<std::pair<ContentProviderUnionSlot, ContentProviderEntry>>
ContentProviderUnion::ListEntriesFilterOrigin(std::optional<ContentProviderUnionSlot> origin,
std::optional<TitleType> title_type,
std::optional<ContentRecordType> record_type,
std::optional<u64> title_id) const {
std::vector<std::pair<ContentProviderUnionSlot, ContentProviderEntry>> out;
for (const auto& provider : providers) {
if (provider.second == nullptr)
continue;
if (origin.has_value() && *origin != provider.first)
continue;
const auto vec = provider.second->ListEntriesFilter(title_type, record_type, title_id);
std::transform(vec.begin(), vec.end(), std::back_inserter(out),
[&provider](const ContentProviderEntry& entry) {
return std::make_pair(provider.first, entry);
});
}
std::sort(out.begin(), out.end());
out.erase(std::unique(out.begin(), out.end()), out.end());
return out;
}
std::optional<ContentProviderUnionSlot> ContentProviderUnion::GetSlotForEntry(
u64 title_id, ContentRecordType type) const {
const auto iter =
std::find_if(providers.begin(), providers.end(), [title_id, type](const auto& provider) {
return provider.second != nullptr && provider.second->HasEntry(title_id, type);
});
if (iter == providers.end()) {
return std::nullopt;
}
return iter->first;
}
ManualContentProvider::~ManualContentProvider() = default;
void ManualContentProvider::AddEntry(TitleType title_type, ContentRecordType content_type,
u64 title_id, VirtualFile file) {
entries.insert_or_assign({title_type, content_type, title_id}, file);
}
void ManualContentProvider::ClearAllEntries() {
entries.clear();
}
void ManualContentProvider::Refresh() {}
bool ManualContentProvider::HasEntry(u64 title_id, ContentRecordType type) const {
return GetEntryRaw(title_id, type) != nullptr;
}
std::optional<u32> ManualContentProvider::GetEntryVersion(u64 title_id) const {
return std::nullopt;
}
VirtualFile ManualContentProvider::GetEntryUnparsed(u64 title_id, ContentRecordType type) const {
return GetEntryRaw(title_id, type);
}
VirtualFile ManualContentProvider::GetEntryRaw(u64 title_id, ContentRecordType type) const {
const auto iter =
std::find_if(entries.begin(), entries.end(), [title_id, type](const auto& entry) {
const auto [title_type, content_type, e_title_id] = entry.first;
return content_type == type && e_title_id == title_id;
});
if (iter == entries.end())
return nullptr;
return iter->second;
}
std::unique_ptr<NCA> ManualContentProvider::GetEntry(u64 title_id, ContentRecordType type) const {
const auto res = GetEntryRaw(title_id, type);
if (res == nullptr)
return nullptr;
return std::make_unique<NCA>(res, nullptr, 0, keys);
}
std::vector<ContentProviderEntry> ManualContentProvider::ListEntriesFilter(
std::optional<TitleType> title_type, std::optional<ContentRecordType> record_type,
std::optional<u64> title_id) const {
std::vector<ContentProviderEntry> out;
for (const auto& entry : entries) {
const auto [e_title_type, e_content_type, e_title_id] = entry.first;
if ((title_type == std::nullopt || e_title_type == *title_type) &&
(record_type == std::nullopt || e_content_type == *record_type) &&
(title_id == std::nullopt || e_title_id == *title_id)) {
out.emplace_back(ContentProviderEntry{e_title_id, e_content_type});
}
}
std::sort(out.begin(), out.end());
out.erase(std::unique(out.begin(), out.end()), out.end());
return out;
}
} // namespace FileSys
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