1 files changed, 125 insertions, 0 deletions
diff --git a/src/core/hle/service/time/time_zone_content_manager.cpp b/src/core/hle/service/time/time_zone_content_manager.cpp
new file mode 100644
index 000000000..57b1a2bca
--- /dev/null
+++ b/src/core/hle/service/time/time_zone_content_manager.cpp
@@ -0,0 +1,125 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <sstream>
+
+#include "common/logging/log.h"
+#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/hle/service/filesystem/filesystem.h"
+#include "core/hle/service/time/time_manager.h"
+#include "core/hle/service/time/time_zone_content_manager.h"
+
+namespace Service::Time::TimeZone {
+
+constexpr u64 time_zone_binary_titleid{0x010000000000080E};
+
+static FileSys::VirtualDir GetTimeZoneBinary(Core::System& system) {
+    const auto* nand{system.GetFileSystemController().GetSystemNANDContents()};
+    const auto nca{nand->GetEntry(time_zone_binary_titleid, FileSys::ContentRecordType::Data)};
+
+    FileSys::VirtualFile romfs;
+    if (nca) {
+        romfs = nca->GetRomFS();
+    }
+
+    if (!romfs) {
+        romfs = FileSys::SystemArchive::SynthesizeSystemArchive(time_zone_binary_titleid);
+    }
+
+    if (!romfs) {
+        LOG_ERROR(Service_Time, "Failed to find or synthesize {:016X!}", time_zone_binary_titleid);
+        return {};
+    }
+
+    return FileSys::ExtractRomFS(romfs);
+}
+
+static std::vector<std::string> BuildLocationNameCache(Core::System& system) {
+    const FileSys::VirtualDir extracted_romfs{GetTimeZoneBinary(system)};
+    if (!extracted_romfs) {
+        LOG_ERROR(Service_Time, "Failed to extract RomFS for {:016X}!", time_zone_binary_titleid);
+        return {};
+    }
+
+    const FileSys::VirtualFile binary_list{extracted_romfs->GetFile("binaryList.txt")};
+    if (!binary_list) {
+        LOG_ERROR(Service_Time, "{:016X} has no file binaryList.txt!", time_zone_binary_titleid);
+        return {};
+    }
+
+    std::vector<char> raw_data(binary_list->GetSize());
+    binary_list->ReadBytes<char>(raw_data.data(), binary_list->GetSize());
+
+    std::stringstream data_stream{raw_data.data()};
+    std::string name;
+    std::vector<std::string> location_name_cache;
+    while (std::getline(data_stream, name)) {
+        name.pop_back(); // Remove carriage return
+        location_name_cache.emplace_back(std::move(name));
+    }
+    return location_name_cache;
+}
+
+TimeZoneContentManager::TimeZoneContentManager(TimeManager& time_manager, Core::System& system)
+    : system{system}, location_name_cache{BuildLocationNameCache(system)} {
+    if (FileSys::VirtualFile vfs_file; GetTimeZoneInfoFile("GMT", vfs_file) == RESULT_SUCCESS) {
+        const auto time_point{
+            time_manager.GetStandardSteadyClockCore().GetCurrentTimePoint(system)};
+        time_manager.SetupTimeZoneManager("GMT", time_point, location_name_cache.size(), {},
+                                          vfs_file);
+    } else {
+        time_zone_manager.MarkAsInitialized();
+    }
+}
+
+ResultCode TimeZoneContentManager::LoadTimeZoneRule(TimeZoneRule& rules,
+                                                    const std::string& location_name) const {
+    FileSys::VirtualFile vfs_file;
+    if (const ResultCode result{GetTimeZoneInfoFile(location_name, vfs_file)};
+        result != RESULT_SUCCESS) {
+        return result;
+    }
+
+    return time_zone_manager.ParseTimeZoneRuleBinary(rules, vfs_file);
+}
+
+bool TimeZoneContentManager::IsLocationNameValid(const std::string& location_name) const {
+    return std::find(location_name_cache.begin(), location_name_cache.end(), location_name) !=
+           location_name_cache.end();
+}
+
+ResultCode TimeZoneContentManager::GetTimeZoneInfoFile(const std::string& location_name,
+                                                       FileSys::VirtualFile& vfs_file) const {
+    if (!IsLocationNameValid(location_name)) {
+        return ERROR_TIME_NOT_FOUND;
+    }
+
+    const FileSys::VirtualDir extracted_romfs{GetTimeZoneBinary(system)};
+    if (!extracted_romfs) {
+        LOG_ERROR(Service_Time, "Failed to extract RomFS for {:016X}!", time_zone_binary_titleid);
+        return ERROR_TIME_NOT_FOUND;
+    }
+
+    const FileSys::VirtualDir zoneinfo_dir{extracted_romfs->GetSubdirectory("zoneinfo")};
+    if (!zoneinfo_dir) {
+        LOG_ERROR(Service_Time, "{:016X} has no directory zoneinfo!", time_zone_binary_titleid);
+        return ERROR_TIME_NOT_FOUND;
+    }
+
+    vfs_file = zoneinfo_dir->GetFile(location_name);
+    if (!vfs_file) {
+        LOG_ERROR(Service_Time, "{:016X} has no file \"{}\"!", time_zone_binary_titleid,
+                  location_name);
+        return ERROR_TIME_NOT_FOUND;
+    }
+
+    return RESULT_SUCCESS;
+}
+
+} // namespace Service::Time::TimeZone