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02841052aa
When searching for a file extension, it's generally preferable to begin the search at the end of the string rather than the beginning, as the whole string isn't going to be walked just to check for something at the end of it.
265 lines
7.8 KiB
C++
265 lines
7.8 KiB
C++
// Copyright 2018 yuzu emulator team
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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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#include <algorithm>
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#include <cstring>
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#include <string_view>
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#include <fmt/ostream.h>
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#include "common/hex_util.h"
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#include "common/logging/log.h"
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#include "core/crypto/key_manager.h"
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#include "core/file_sys/content_archive.h"
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#include "core/file_sys/nca_metadata.h"
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#include "core/file_sys/partition_filesystem.h"
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#include "core/file_sys/submission_package.h"
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#include "core/loader/loader.h"
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namespace FileSys {
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namespace {
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void SetTicketKeys(const std::vector<VirtualFile>& files) {
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Core::Crypto::KeyManager keys;
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for (const auto& ticket_file : files) {
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if (ticket_file->GetExtension() != "tik") {
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continue;
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}
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if (ticket_file == nullptr ||
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ticket_file->GetSize() <
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Core::Crypto::TICKET_FILE_TITLEKEY_OFFSET + sizeof(Core::Crypto::Key128)) {
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continue;
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}
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Core::Crypto::Key128 key{};
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ticket_file->Read(key.data(), key.size(), Core::Crypto::TICKET_FILE_TITLEKEY_OFFSET);
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std::string_view name_only(ticket_file->GetName());
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name_only.remove_suffix(4);
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const auto rights_id_raw = Common::HexStringToArray<16>(name_only);
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u128 rights_id;
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std::memcpy(rights_id.data(), rights_id_raw.data(), sizeof(u128));
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keys.SetKey(Core::Crypto::S128KeyType::Titlekey, key, rights_id[1], rights_id[0]);
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}
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}
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} // Anonymous namespace
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NSP::NSP(VirtualFile file_)
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: file(std::move(file_)), status{Loader::ResultStatus::Success},
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pfs(std::make_shared<PartitionFilesystem>(file)) {
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if (pfs->GetStatus() != Loader::ResultStatus::Success) {
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status = pfs->GetStatus();
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return;
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}
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const auto files = pfs->GetFiles();
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if (IsDirectoryExeFS(pfs)) {
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extracted = true;
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InitializeExeFSAndRomFS(files);
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return;
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}
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SetTicketKeys(files);
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ReadNCAs(files);
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}
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NSP::~NSP() = default;
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Loader::ResultStatus NSP::GetStatus() const {
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return status;
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}
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Loader::ResultStatus NSP::GetProgramStatus(u64 title_id) const {
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const auto iter = program_status.find(title_id);
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if (iter == program_status.end())
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return Loader::ResultStatus::ErrorNSPMissingProgramNCA;
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return iter->second;
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}
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u64 NSP::GetFirstTitleID() const {
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if (program_status.empty())
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return 0;
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return program_status.begin()->first;
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}
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u64 NSP::GetProgramTitleID() const {
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const auto out = GetFirstTitleID();
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if ((out & 0x800) == 0)
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return out;
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const auto ids = GetTitleIDs();
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const auto iter =
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std::find_if(ids.begin(), ids.end(), [](u64 tid) { return (tid & 0x800) == 0; });
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return iter == ids.end() ? out : *iter;
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}
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std::vector<u64> NSP::GetTitleIDs() const {
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std::vector<u64> out;
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out.reserve(ncas.size());
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for (const auto& kv : ncas)
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out.push_back(kv.first);
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return out;
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}
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bool NSP::IsExtractedType() const {
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return extracted;
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}
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VirtualFile NSP::GetRomFS() const {
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return romfs;
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}
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VirtualDir NSP::GetExeFS() const {
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return exefs;
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}
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std::vector<std::shared_ptr<NCA>> NSP::GetNCAsCollapsed() const {
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if (extracted)
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LOG_WARNING(Service_FS, "called on an NSP that is of type extracted.");
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std::vector<std::shared_ptr<NCA>> out;
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for (const auto& map : ncas) {
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for (const auto& inner_map : map.second)
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out.push_back(inner_map.second);
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}
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return out;
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}
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std::multimap<u64, std::shared_ptr<NCA>> NSP::GetNCAsByTitleID() const {
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if (extracted)
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LOG_WARNING(Service_FS, "called on an NSP that is of type extracted.");
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std::multimap<u64, std::shared_ptr<NCA>> out;
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for (const auto& map : ncas) {
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for (const auto& inner_map : map.second)
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out.emplace(map.first, inner_map.second);
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}
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return out;
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}
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std::map<u64, std::map<ContentRecordType, std::shared_ptr<NCA>>> NSP::GetNCAs() const {
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return ncas;
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}
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std::shared_ptr<NCA> NSP::GetNCA(u64 title_id, ContentRecordType type) const {
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if (extracted)
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LOG_WARNING(Service_FS, "called on an NSP that is of type extracted.");
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const auto title_id_iter = ncas.find(title_id);
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if (title_id_iter == ncas.end())
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return nullptr;
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const auto type_iter = title_id_iter->second.find(type);
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if (type_iter == title_id_iter->second.end())
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return nullptr;
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return type_iter->second;
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}
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VirtualFile NSP::GetNCAFile(u64 title_id, ContentRecordType type) const {
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if (extracted)
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LOG_WARNING(Service_FS, "called on an NSP that is of type extracted.");
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const auto nca = GetNCA(title_id, type);
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if (nca != nullptr)
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return nca->GetBaseFile();
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return nullptr;
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}
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std::vector<Core::Crypto::Key128> NSP::GetTitlekey() const {
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if (extracted)
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LOG_WARNING(Service_FS, "called on an NSP that is of type extracted.");
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std::vector<Core::Crypto::Key128> out;
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for (const auto& ticket_file : ticket_files) {
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if (ticket_file == nullptr ||
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ticket_file->GetSize() <
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Core::Crypto::TICKET_FILE_TITLEKEY_OFFSET + sizeof(Core::Crypto::Key128)) {
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continue;
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}
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out.emplace_back();
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ticket_file->Read(out.back().data(), out.back().size(),
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Core::Crypto::TICKET_FILE_TITLEKEY_OFFSET);
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}
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return out;
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}
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std::vector<VirtualFile> NSP::GetFiles() const {
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return pfs->GetFiles();
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}
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std::vector<VirtualDir> NSP::GetSubdirectories() const {
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return pfs->GetSubdirectories();
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}
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std::string NSP::GetName() const {
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return file->GetName();
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}
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VirtualDir NSP::GetParentDirectory() const {
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return file->GetContainingDirectory();
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}
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bool NSP::ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) {
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return false;
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}
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void NSP::InitializeExeFSAndRomFS(const std::vector<VirtualFile>& files) {
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exefs = pfs;
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const auto romfs_iter = std::find_if(files.begin(), files.end(), [](const VirtualFile& file) {
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return file->GetName().rfind(".romfs") != std::string::npos;
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});
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if (romfs_iter == files.end()) {
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return;
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}
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romfs = *romfs_iter;
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}
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void NSP::ReadNCAs(const std::vector<VirtualFile>& files) {
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for (const auto& outer_file : files) {
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if (outer_file->GetName().substr(outer_file->GetName().size() - 9) != ".cnmt.nca") {
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continue;
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}
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const auto nca = std::make_shared<NCA>(outer_file);
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if (nca->GetStatus() != Loader::ResultStatus::Success) {
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program_status[nca->GetTitleId()] = nca->GetStatus();
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continue;
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}
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const auto section0 = nca->GetSubdirectories()[0];
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for (const auto& inner_file : section0->GetFiles()) {
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if (inner_file->GetExtension() != "cnmt")
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continue;
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const CNMT cnmt(inner_file);
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auto& ncas_title = ncas[cnmt.GetTitleID()];
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ncas_title[ContentRecordType::Meta] = nca;
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for (const auto& rec : cnmt.GetContentRecords()) {
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const auto id_string = Common::HexArrayToString(rec.nca_id, false);
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const auto next_file = pfs->GetFile(fmt::format("{}.nca", id_string));
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if (next_file == nullptr) {
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LOG_WARNING(Service_FS,
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"NCA with ID {}.nca is listed in content metadata, but cannot "
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"be found in PFS. NSP appears to be corrupted.",
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id_string);
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continue;
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}
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auto next_nca = std::make_shared<NCA>(next_file);
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if (next_nca->GetType() == NCAContentType::Program)
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program_status[cnmt.GetTitleID()] = next_nca->GetStatus();
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if (next_nca->GetStatus() == Loader::ResultStatus::Success)
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ncas_title[rec.type] = std::move(next_nca);
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}
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break;
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}
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}
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}
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} // namespace FileSys
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