diff options
Diffstat (limited to 'src/core/file_sys/archive_source_sd_savedata.cpp')
-rw-r--r-- | src/core/file_sys/archive_source_sd_savedata.cpp | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/core/file_sys/archive_source_sd_savedata.cpp b/src/core/file_sys/archive_source_sd_savedata.cpp new file mode 100644 index 000000000..2d8a950a3 --- /dev/null +++ b/src/core/file_sys/archive_source_sd_savedata.cpp @@ -0,0 +1,93 @@ +// Copyright 2016 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "common/file_util.h" +#include "common/logging/log.h" +#include "common/string_util.h" +#include "core/file_sys/archive_source_sd_savedata.h" +#include "core/file_sys/savedata_archive.h" +#include "core/hle/service/fs/archive.h" + +//////////////////////////////////////////////////////////////////////////////////////////////////// +// FileSys namespace + +namespace FileSys { + +namespace { + +std::string GetSaveDataContainerPath(const std::string& sdmc_directory) { + return Common::StringFromFormat("%sNintendo 3DS/%s/%s/title/", sdmc_directory.c_str(), + SYSTEM_ID.c_str(), SDCARD_ID.c_str()); +} + +std::string GetSaveDataPath(const std::string& mount_location, u64 program_id) { + u32 high = static_cast<u32>(program_id >> 32); + u32 low = static_cast<u32>(program_id & 0xFFFFFFFF); + return Common::StringFromFormat("%s%08x/%08x/data/00000001/", mount_location.c_str(), high, + low); +} + +std::string GetSaveDataMetadataPath(const std::string& mount_location, u64 program_id) { + u32 high = static_cast<u32>(program_id >> 32); + u32 low = static_cast<u32>(program_id & 0xFFFFFFFF); + return Common::StringFromFormat("%s%08x/%08x/data/00000001.metadata", mount_location.c_str(), + high, low); +} + +} // namespace + +ArchiveSource_SDSaveData::ArchiveSource_SDSaveData(const std::string& sdmc_directory) + : mount_point(GetSaveDataContainerPath(sdmc_directory)) { + LOG_INFO(Service_FS, "Directory %s set as SaveData.", mount_point.c_str()); +} + +ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveSource_SDSaveData::Open(u64 program_id) { + std::string concrete_mount_point = GetSaveDataPath(mount_point, program_id); + if (!FileUtil::Exists(concrete_mount_point)) { + // When a SaveData archive is created for the first time, it is not yet formatted and the + // save file/directory structure expected by the game has not yet been initialized. + // Returning the NotFormatted error code will signal the game to provision the SaveData + // archive with the files and folders that it expects. + return ResultCode(ErrorDescription::FS_NotFormatted, ErrorModule::FS, + ErrorSummary::InvalidState, ErrorLevel::Status); + } + + auto archive = std::make_unique<SaveDataArchive>(std::move(concrete_mount_point)); + return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive)); +} + +ResultCode ArchiveSource_SDSaveData::Format(u64 program_id, + const FileSys::ArchiveFormatInfo& format_info) { + std::string concrete_mount_point = GetSaveDataPath(mount_point, program_id); + FileUtil::DeleteDirRecursively(concrete_mount_point); + FileUtil::CreateFullPath(concrete_mount_point); + + // Write the format metadata + std::string metadata_path = GetSaveDataMetadataPath(mount_point, program_id); + FileUtil::IOFile file(metadata_path, "wb"); + + if (file.IsOpen()) { + file.WriteBytes(&format_info, sizeof(format_info)); + return RESULT_SUCCESS; + } + return RESULT_SUCCESS; +} + +ResultVal<ArchiveFormatInfo> ArchiveSource_SDSaveData::GetFormatInfo(u64 program_id) const { + std::string metadata_path = GetSaveDataMetadataPath(mount_point, program_id); + FileUtil::IOFile file(metadata_path, "rb"); + + if (!file.IsOpen()) { + LOG_ERROR(Service_FS, "Could not open metadata information for archive"); + // TODO(Subv): Verify error code + return ResultCode(ErrorDescription::FS_NotFormatted, ErrorModule::FS, + ErrorSummary::InvalidState, ErrorLevel::Status); + } + + ArchiveFormatInfo info = {}; + file.ReadBytes(&info, sizeof(info)); + return MakeResult<ArchiveFormatInfo>(info); +} + +} // namespace FileSys |