registered_cache: Process *.cnmt.nca files
Needed to use the RegisteredCache/PlaceholderCache on gamecards.
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9d9fc8a675
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@ -48,19 +48,22 @@ static bool FollowsTwoDigitDirFormat(std::string_view name) {
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static bool FollowsNcaIdFormat(std::string_view name) {
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static const std::regex nca_id_regex("[0-9A-F]{32}\\.nca", std::regex_constants::ECMAScript |
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std::regex_constants::icase);
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return name.size() == 36 && std::regex_match(name.begin(), name.end(), nca_id_regex);
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static const std::regex nca_id_cnmt_regex(
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"[0-9A-F]{32}\\.cnmt.nca", std::regex_constants::ECMAScript | std::regex_constants::icase);
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return (name.size() == 36 && std::regex_match(name.begin(), name.end(), nca_id_regex)) ||
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(name.size() == 41 && std::regex_match(name.begin(), name.end(), nca_id_cnmt_regex));
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}
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static std::string GetRelativePathFromNcaID(const std::array<u8, 16>& nca_id, bool second_hex_upper,
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bool within_two_digit) {
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if (!within_two_digit) {
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return fmt::format("/{}.nca", Common::HexToString(nca_id, second_hex_upper));
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}
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bool within_two_digit, bool cnmt_suffix) {
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if (!within_two_digit)
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return fmt::format(cnmt_suffix ? "{}.cnmt.nca" : "/{}.nca",
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Common::HexArrayToString(nca_id, second_hex_upper));
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Core::Crypto::SHA256Hash hash{};
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mbedtls_sha256(nca_id.data(), nca_id.size(), hash.data(), 0);
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return fmt::format("/000000{:02X}/{}.nca", hash[0],
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Common::HexToString(nca_id, second_hex_upper));
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return fmt::format(cnmt_suffix ? "/000000{:02X}/{}.cnmt.nca" : "/000000{:02X}/{}.nca", hash[0],
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Common::HexArrayToString(nca_id, second_hex_upper));
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}
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static std::string GetCNMTName(TitleType type, u64 title_id) {
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@ -319,14 +322,18 @@ VirtualFile RegisteredCache::OpenFileOrDirectoryConcat(const VirtualDir& dir,
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VirtualFile RegisteredCache::GetFileAtID(NcaID id) const {
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VirtualFile file;
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// Try all four modes of file storage:
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// (bit 1 = uppercase/lower, bit 0 = within a two-digit dir)
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// 00: /000000**/{:032X}.nca
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// 01: /{:032X}.nca
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// 10: /000000**/{:032x}.nca
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// 11: /{:032x}.nca
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for (u8 i = 0; i < 4; ++i) {
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const auto path = GetRelativePathFromNcaID(id, (i & 0b10) == 0, (i & 0b01) == 0);
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// Try all five relevant modes of file storage:
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// (bit 2 = uppercase/lower, bit 1 = within a two-digit dir, bit 0 = .cnmt suffix)
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// 000: /000000**/{:032X}.nca
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// 010: /{:032X}.nca
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// 100: /000000**/{:032x}.nca
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// 110: /{:032x}.nca
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// 111: /{:032x}.cnmt.nca
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for (u8 i = 0; i < 8; ++i) {
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if ((i % 2) == 1 && i != 7)
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continue;
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const auto path =
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GetRelativePathFromNcaID(id, (i & 0b100) == 0, (i & 0b010) == 0, (i & 0b001) == 0b001);
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file = OpenFileOrDirectoryConcat(dir, path);
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if (file != nullptr)
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return file;
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@ -622,7 +629,7 @@ InstallResult RegisteredCache::RawInstallNCA(const NCA& nca, const VfsCopyFuncti
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memcpy(id.data(), hash.data(), 16);
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}
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std::string path = GetRelativePathFromNcaID(id, false, true);
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std::string path = GetRelativePathFromNcaID(id, false, true, false);
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if (GetFileAtID(id) != nullptr && !overwrite_if_exists) {
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LOG_WARNING(Loader, "Attempting to overwrite existing NCA. Skipping...");
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