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registered_cache: Remove previous update/dlc if it exists on install
- This checks for and removes old updates or dlc based on title id. If a content meta nca exists within the registered cache, it will attempt to remove all the ncas associated with the content meta before installing a new update/dlc
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2 changed files with 84 additions and 14 deletions
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@ -547,6 +547,57 @@ InstallResult RegisteredCache::InstallEntry(const XCI& xci, bool overwrite_if_ex
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return InstallEntry(*xci.GetSecurePartitionNSP(), overwrite_if_exists, copy);
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}
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bool RegisteredCache::RemoveExistingEntry(const u64 title_id) {
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const auto delete_nca = [this](const NcaID& id) {
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const auto path = GetRelativePathFromNcaID(id, false, true, false);
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if (dir->GetFileRelative(path) == nullptr) {
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return false;
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}
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Core::Crypto::SHA256Hash hash{};
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mbedtls_sha256_ret(id.data(), id.size(), hash.data(), 0);
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const auto dirname = fmt::format("000000{:02X}", hash[0]);
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const auto dir2 = GetOrCreateDirectoryRelative(dir, dirname);
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const auto res = dir2->DeleteFile(fmt::format("{}.nca", Common::HexToString(id, false)));
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return res;
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};
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// Get the Content Provider
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const auto& installed = Core::System::GetInstance().GetContentProvider();
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// If an update exists, remove
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if (installed.HasEntry(title_id, ContentRecordType::Meta)) {
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LOG_INFO(Loader,
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"Previous Update (v{}) for title_id={:016X} detected! Attempting to remove...",
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installed.GetEntryVersion(title_id).value_or(0), title_id);
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// Get all the ncas associated with the current update CNMT and delete them
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const auto& meta_old_id =
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GetNcaIDFromMetadata(title_id, ContentRecordType::Meta).value_or(NcaID{});
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const auto& program_id =
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GetNcaIDFromMetadata(title_id, ContentRecordType::Program).value_or(NcaID{});
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const auto& data_id =
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GetNcaIDFromMetadata(title_id, ContentRecordType::Data).value_or(NcaID{});
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const auto& control_id =
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GetNcaIDFromMetadata(title_id, ContentRecordType::Control).value_or(NcaID{});
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const auto& html_id =
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GetNcaIDFromMetadata(title_id, ContentRecordType::HtmlDocument).value_or(NcaID{});
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const auto& legal_id =
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GetNcaIDFromMetadata(title_id, ContentRecordType::LegalInformation).value_or(NcaID{});
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delete_nca(meta_old_id);
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delete_nca(program_id);
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delete_nca(data_id);
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delete_nca(control_id);
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delete_nca(html_id);
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delete_nca(legal_id);
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return true;
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}
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return false;
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}
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InstallResult RegisteredCache::InstallEntry(const NSP& nsp, bool overwrite_if_exists,
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const VfsCopyFunction& copy) {
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const auto ncas = nsp.GetNCAsCollapsed();
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@ -560,31 +611,44 @@ InstallResult RegisteredCache::InstallEntry(const NSP& nsp, bool overwrite_if_ex
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return InstallResult::ErrorMetaFailed;
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}
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// Install Metadata File
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const auto meta_id_raw = (*meta_iter)->GetName().substr(0, 32);
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const auto meta_id = Common::HexStringToArray<16>(meta_id_raw);
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const auto res = RawInstallNCA(**meta_iter, copy, overwrite_if_exists, meta_id);
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if (res != InstallResult::Success)
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return res;
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// Install all the other NCAs
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const auto section0 = (*meta_iter)->GetSubdirectories()[0];
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const auto cnmt_file = section0->GetFiles()[0];
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const CNMT cnmt(cnmt_file);
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// Get the title id stored within the CNMT
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const auto title_id = cnmt.GetTitleID();
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// Removes an entry if it exists
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const auto result = RemoveExistingEntry(title_id);
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// Install Metadata File
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const auto res = RawInstallNCA(**meta_iter, copy, overwrite_if_exists, meta_id);
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if (res != InstallResult::Success) {
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return res;
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}
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// Install all the other NCAs
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for (const auto& record : cnmt.GetContentRecords()) {
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// Ignore DeltaFragments, they are not useful to us
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if (record.type == ContentRecordType::DeltaFragment)
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if (record.type == ContentRecordType::DeltaFragment) {
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continue;
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}
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const auto nca = GetNCAFromNSPForID(nsp, record.nca_id);
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if (nca == nullptr)
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if (nca == nullptr) {
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return InstallResult::ErrorCopyFailed;
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}
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const auto res2 = RawInstallNCA(*nca, copy, overwrite_if_exists, record.nca_id);
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if (res2 != InstallResult::Success)
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if (res2 != InstallResult::Success) {
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return res2;
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}
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}
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Refresh();
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if (result) {
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return InstallResult::ErrorAlreadyExists;
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}
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return InstallResult::Success;
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}
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@ -610,8 +674,9 @@ InstallResult RegisteredCache::InstallEntry(const NCA& nca, TitleType type,
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mbedtls_sha256_ret(data.data(), data.size(), c_rec.hash.data(), 0);
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memcpy(&c_rec.nca_id, &c_rec.hash, 16);
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const CNMT new_cnmt(header, opt_header, {c_rec}, {});
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if (!RawInstallYuzuMeta(new_cnmt))
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if (!RawInstallYuzuMeta(new_cnmt)) {
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return InstallResult::ErrorMetaFailed;
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}
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return RawInstallNCA(nca, copy, overwrite_if_exists, c_rec.nca_id);
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}
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@ -649,8 +714,9 @@ InstallResult RegisteredCache::RawInstallNCA(const NCA& nca, const VfsCopyFuncti
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}
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auto out = dir->CreateFileRelative(path);
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if (out == nullptr)
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if (out == nullptr) {
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return InstallResult::ErrorCopyFailed;
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}
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return copy(in, out, VFS_RC_LARGE_COPY_BLOCK) ? InstallResult::Success
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: InstallResult::ErrorCopyFailed;
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}
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@ -34,6 +34,7 @@ using VfsCopyFunction = std::function<bool(const VirtualFile&, const VirtualFile
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enum class InstallResult {
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Success,
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OverwriteExisting,
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ErrorAlreadyExists,
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ErrorCopyFailed,
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ErrorMetaFailed,
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@ -132,8 +133,8 @@ public:
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// Parsing function defines the conversion from raw file to NCA. If there are other steps
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// besides creating the NCA from the file (e.g. NAX0 on SD Card), that should go in a custom
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// parsing function.
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explicit RegisteredCache(VirtualDir dir,
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ContentProviderParsingFunction parsing_function =
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explicit RegisteredCache(
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VirtualDir dir, ContentProviderParsingFunction parsing_function =
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[](const VirtualFile& file, const NcaID& id) { return file; });
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~RegisteredCache() override;
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@ -154,6 +155,9 @@ public:
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std::optional<TitleType> title_type = {}, std::optional<ContentRecordType> record_type = {},
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std::optional<u64> title_id = {}) const override;
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// Removes an existing entry based on title id
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bool RemoveExistingEntry(const u64 title_id);
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// Raw copies all the ncas from the xci/nsp to the csache. Does some quick checks to make sure
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// there is a meta NCA and all of them are accessible.
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InstallResult InstallEntry(const XCI& xci, bool overwrite_if_exists = false,
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