diff options
Diffstat (limited to 'src/core/hle/service/glue/time/time_zone_binary.cpp')
| -rw-r--r-- | src/core/hle/service/glue/time/time_zone_binary.cpp | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/src/core/hle/service/glue/time/time_zone_binary.cpp b/src/core/hle/service/glue/time/time_zone_binary.cpp new file mode 100644 index 000000000..67969aa3f --- /dev/null +++ b/src/core/hle/service/glue/time/time_zone_binary.cpp @@ -0,0 +1,221 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "core/core.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/romfs.h" +#include "core/file_sys/system_archive/system_archive.h" +#include "core/file_sys/vfs.h" +#include "core/hle/service/filesystem/filesystem.h" +#include "core/hle/service/glue/time/time_zone_binary.h" + +namespace Service::Glue::Time { +namespace { +constexpr u64 TimeZoneBinaryId = 0x10000000000080E; + +static FileSys::VirtualDir g_time_zone_binary_romfs{}; +static Result g_time_zone_binary_mount_result{ResultUnknown}; +static std::vector<u8> g_time_zone_scratch_space(0x2800, 0); + +Result TimeZoneReadBinary(size_t& out_read_size, std::span<u8> out_buffer, size_t out_buffer_size, + std::string_view path) { + R_UNLESS(g_time_zone_binary_mount_result == ResultSuccess, g_time_zone_binary_mount_result); + + auto vfs_file{g_time_zone_binary_romfs->GetFileRelative(path)}; + R_UNLESS(vfs_file, ResultUnknown); + + auto file_size{vfs_file->GetSize()}; + R_UNLESS(file_size > 0, ResultUnknown); + + R_UNLESS(file_size <= out_buffer_size, Service::PSC::Time::ResultFailed); + + out_read_size = vfs_file->Read(out_buffer.data(), file_size); + R_UNLESS(out_read_size > 0, ResultUnknown); + + R_SUCCEED(); +} +} // namespace + +void ResetTimeZoneBinary() { + g_time_zone_binary_romfs = {}; + g_time_zone_binary_mount_result = ResultUnknown; + g_time_zone_scratch_space.clear(); + g_time_zone_scratch_space.resize(0x2800, 0); +} + +Result MountTimeZoneBinary(Core::System& system) { + ResetTimeZoneBinary(); + + auto& fsc{system.GetFileSystemController()}; + std::unique_ptr<FileSys::NCA> nca{}; + + auto* bis_system = fsc.GetSystemNANDContents(); + + R_UNLESS(bis_system, ResultUnknown); + + nca = bis_system->GetEntry(TimeZoneBinaryId, FileSys::ContentRecordType::Data); + + if (nca) { + g_time_zone_binary_romfs = FileSys::ExtractRomFS(nca->GetRomFS()); + } + + if (g_time_zone_binary_romfs) { + // Validate that the romfs is readable, using invalid firmware keys can cause this to get + // set but the files to be garbage. In that case, we want to hit the next path and + // synthesise them instead. + Service::PSC::Time::LocationName name{"Etc/GMT"}; + if (!IsTimeZoneBinaryValid(name)) { + ResetTimeZoneBinary(); + } + } + + if (!g_time_zone_binary_romfs) { + g_time_zone_binary_romfs = FileSys::ExtractRomFS( + FileSys::SystemArchive::SynthesizeSystemArchive(TimeZoneBinaryId)); + } + + R_UNLESS(g_time_zone_binary_romfs, ResultUnknown); + + g_time_zone_binary_mount_result = ResultSuccess; + R_SUCCEED(); +} + +void GetTimeZoneBinaryListPath(std::string& out_path) { + if (g_time_zone_binary_mount_result != ResultSuccess) { + return; + } + // out_path = fmt::format("{}:/binaryList.txt", "TimeZoneBinary"); + out_path = "/binaryList.txt"; +} + +void GetTimeZoneBinaryVersionPath(std::string& out_path) { + if (g_time_zone_binary_mount_result != ResultSuccess) { + return; + } + // out_path = fmt::format("{}:/version.txt", "TimeZoneBinary"); + out_path = "/version.txt"; +} + +void GetTimeZoneZonePath(std::string& out_path, Service::PSC::Time::LocationName& name) { + if (g_time_zone_binary_mount_result != ResultSuccess) { + return; + } + // out_path = fmt::format("{}:/zoneinfo/{}", "TimeZoneBinary", name); + out_path = fmt::format("/zoneinfo/{}", name.name.data()); +} + +bool IsTimeZoneBinaryValid(Service::PSC::Time::LocationName& name) { + std::string path{}; + GetTimeZoneZonePath(path, name); + + auto vfs_file{g_time_zone_binary_romfs->GetFileRelative(path)}; + if (!vfs_file) { + LOG_INFO(Service_Time, "Could not find timezone file {}", path); + return false; + } + return vfs_file->GetSize() != 0; +} + +u32 GetTimeZoneCount() { + std::string path{}; + GetTimeZoneBinaryListPath(path); + + size_t bytes_read{}; + if (TimeZoneReadBinary(bytes_read, g_time_zone_scratch_space, 0x2800, path) != ResultSuccess) { + return 0; + } + if (bytes_read == 0) { + return 0; + } + + auto chars = std::span(reinterpret_cast<char*>(g_time_zone_scratch_space.data()), bytes_read); + u32 count{}; + for (auto chr : chars) { + if (chr == '\n') { + count++; + } + } + return count; +} + +Result GetTimeZoneVersion(Service::PSC::Time::RuleVersion& out_rule_version) { + std::string path{}; + GetTimeZoneBinaryVersionPath(path); + + auto rule_version_buffer{std::span(reinterpret_cast<u8*>(&out_rule_version), + sizeof(Service::PSC::Time::RuleVersion))}; + size_t bytes_read{}; + R_TRY(TimeZoneReadBinary(bytes_read, rule_version_buffer, rule_version_buffer.size_bytes(), + path)); + + rule_version_buffer[bytes_read] = 0; + R_SUCCEED(); +} + +Result GetTimeZoneRule(std::span<const u8>& out_rule, size_t& out_rule_size, + Service::PSC::Time::LocationName& name) { + std::string path{}; + GetTimeZoneZonePath(path, name); + + size_t bytes_read{}; + R_TRY(TimeZoneReadBinary(bytes_read, g_time_zone_scratch_space, + g_time_zone_scratch_space.size(), path)); + + out_rule = std::span(g_time_zone_scratch_space.data(), bytes_read); + out_rule_size = bytes_read; + R_SUCCEED(); +} + +Result GetTimeZoneLocationList(u32& out_count, + std::vector<Service::PSC::Time::LocationName>& out_names, + size_t max_names, u32 index) { + std::string path{}; + GetTimeZoneBinaryListPath(path); + + size_t bytes_read{}; + R_TRY(TimeZoneReadBinary(bytes_read, g_time_zone_scratch_space, + g_time_zone_scratch_space.size(), path)); + + out_count = 0; + R_SUCCEED_IF(bytes_read == 0); + + Service::PSC::Time::LocationName current_name{}; + size_t current_name_len{}; + std::span<const u8> chars{g_time_zone_scratch_space}; + u32 name_count{}; + + for (auto chr : chars) { + if (chr == '\r') { + continue; + } + + if (chr == '\n') { + if (name_count >= index) { + out_names.push_back(current_name); + out_count++; + if (out_count >= max_names) { + break; + } + } + name_count++; + current_name_len = 0; + current_name = {}; + continue; + } + + if (chr == '\0') { + break; + } + + R_UNLESS(current_name_len <= current_name.name.size() - 2, + Service::PSC::Time::ResultFailed); + + current_name.name[current_name_len++] = chr; + } + + R_SUCCEED(); +} + +} // namespace Service::Glue::Time |