98 lines
3.8 KiB
C++
98 lines
3.8 KiB
C++
// Copyright 2016 Citra Emulator Project
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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 <fmt/format.h>
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#include "common/archives.h"
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#include "common/file_util.h"
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#include "common/logging/log.h"
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#include "core/file_sys/archive_source_sd_savedata.h"
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#include "core/file_sys/errors.h"
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#include "core/file_sys/savedata_archive.h"
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#include "core/hle/service/fs/archive.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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SERIALIZE_EXPORT_IMPL(FileSys::ArchiveSource_SDSaveData)
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namespace FileSys {
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namespace {
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std::string GetSaveDataContainerPath(const std::string& sdmc_directory) {
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return fmt::format("{}Nintendo 3DS/{}/{}/title/", sdmc_directory, SYSTEM_ID, SDCARD_ID);
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}
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std::string GetSaveDataPath(const std::string& mount_location, u64 program_id) {
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u32 high = static_cast<u32>(program_id >> 32);
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u32 low = static_cast<u32>(program_id & 0xFFFFFFFF);
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return fmt::format("{}{:08x}/{:08x}/data/00000001/", mount_location, high, low);
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}
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std::string GetSaveDataMetadataPath(const std::string& mount_location, u64 program_id) {
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u32 high = static_cast<u32>(program_id >> 32);
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u32 low = static_cast<u32>(program_id & 0xFFFFFFFF);
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return fmt::format("{}{:08x}/{:08x}/data/00000001.metadata", mount_location, high, low);
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}
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} // namespace
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ArchiveSource_SDSaveData::ArchiveSource_SDSaveData(const std::string& sdmc_directory)
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: mount_point(GetSaveDataContainerPath(sdmc_directory)) {
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LOG_DEBUG(Service_FS, "Directory {} set as SaveData.", mount_point);
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}
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ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveSource_SDSaveData::Open(u64 program_id) {
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std::string concrete_mount_point = GetSaveDataPath(mount_point, program_id);
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if (!FileUtil::Exists(concrete_mount_point)) {
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// When a SaveData archive is created for the first time, it is not yet formatted and the
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// save file/directory structure expected by the game has not yet been initialized.
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// Returning the NotFormatted error code will signal the game to provision the SaveData
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// archive with the files and folders that it expects.
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return ERR_NOT_FORMATTED;
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}
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auto archive = std::make_unique<SaveDataArchive>(std::move(concrete_mount_point));
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return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive));
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}
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ResultCode ArchiveSource_SDSaveData::Format(u64 program_id,
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const FileSys::ArchiveFormatInfo& format_info) {
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std::string concrete_mount_point = GetSaveDataPath(mount_point, program_id);
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FileUtil::DeleteDirRecursively(concrete_mount_point);
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FileUtil::CreateFullPath(concrete_mount_point);
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// Write the format metadata
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std::string metadata_path = GetSaveDataMetadataPath(mount_point, program_id);
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FileUtil::IOFile file(metadata_path, "wb");
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if (file.IsOpen()) {
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file.WriteBytes(&format_info, sizeof(format_info));
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return RESULT_SUCCESS;
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}
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return RESULT_SUCCESS;
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}
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ResultVal<ArchiveFormatInfo> ArchiveSource_SDSaveData::GetFormatInfo(u64 program_id) const {
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std::string metadata_path = GetSaveDataMetadataPath(mount_point, program_id);
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FileUtil::IOFile file(metadata_path, "rb");
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if (!file.IsOpen()) {
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LOG_ERROR(Service_FS, "Could not open metadata information for archive");
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// TODO(Subv): Verify error code
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return ERR_NOT_FORMATTED;
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}
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ArchiveFormatInfo info = {};
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file.ReadBytes(&info, sizeof(info));
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return MakeResult<ArchiveFormatInfo>(info);
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}
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std::string ArchiveSource_SDSaveData::GetSaveDataPathFor(const std::string& mount_point,
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u64 program_id) {
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return GetSaveDataPath(GetSaveDataContainerPath(mount_point), program_id);
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}
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} // namespace FileSys
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