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citra/src/core/hle/service/fs/archive.cpp

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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <cinttypes>
#include <cstddef>
#include <memory>
#include <system_error>
#include <type_traits>
#include <unordered_map>
#include <utility>
#include <boost/container/flat_map.hpp>
#include "common/assert.h"
#include "common/common_types.h"
#include "common/file_util.h"
#include "common/logging/log.h"
#include "core/file_sys/archive_backend.h"
#include "core/file_sys/archive_extsavedata.h"
#include "core/file_sys/archive_ncch.h"
#include "core/file_sys/archive_other_savedata.h"
#include "core/file_sys/archive_savedata.h"
#include "core/file_sys/archive_sdmc.h"
#include "core/file_sys/archive_sdmcwriteonly.h"
#include "core/file_sys/archive_selfncch.h"
#include "core/file_sys/archive_systemsavedata.h"
#include "core/file_sys/directory_backend.h"
#include "core/file_sys/errors.h"
#include "core/file_sys/file_backend.h"
#include "core/hle/result.h"
#include "core/hle/service/fs/archive.h"
namespace Service::FS {
using FileSys::ArchiveBackend;
using FileSys::ArchiveFactory;
/**
* Map of registered archives, identified by id code. Once an archive is registered here, it is
* never removed until UnregisterArchiveTypes is called.
*/
static boost::container::flat_map<ArchiveIdCode, std::unique_ptr<ArchiveFactory>> id_code_map;
/**
* Map of active archive handles. Values are pointers to the archives in `idcode_map`.
*/
static std::unordered_map<ArchiveHandle, std::unique_ptr<ArchiveBackend>> handle_map;
static ArchiveHandle next_handle;
static ArchiveBackend* GetArchive(ArchiveHandle handle) {
auto itr = handle_map.find(handle);
return (itr == handle_map.end()) ? nullptr : itr->second.get();
}
ResultVal<ArchiveHandle> OpenArchive(ArchiveIdCode id_code, FileSys::Path& archive_path) {
LOG_TRACE(Service_FS, "Opening archive with id code 0x{:08X}", static_cast<u32>(id_code));
auto itr = id_code_map.find(id_code);
if (itr == id_code_map.end()) {
return FileSys::ERROR_NOT_FOUND;
}
CASCADE_RESULT(std::unique_ptr<ArchiveBackend> res, itr->second->Open(archive_path));
// This should never even happen in the first place with 64-bit handles,
while (handle_map.count(next_handle) != 0) {
++next_handle;
}
handle_map.emplace(next_handle, std::move(res));
return MakeResult<ArchiveHandle>(next_handle++);
}
ResultCode CloseArchive(ArchiveHandle handle) {
if (handle_map.erase(handle) == 0)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
else
return RESULT_SUCCESS;
}
// TODO(yuriks): This might be what the fs:REG service is for. See the Register/Unregister calls in
// http://3dbrew.org/wiki/Filesystem_services#ProgramRegistry_service_.22fs:REG.22
ResultCode RegisterArchiveType(std::unique_ptr<FileSys::ArchiveFactory>&& factory,
ArchiveIdCode id_code) {
auto result = id_code_map.emplace(id_code, std::move(factory));
bool inserted = result.second;
ASSERT_MSG(inserted, "Tried to register more than one archive with same id code");
auto& archive = result.first->second;
LOG_DEBUG(Service_FS, "Registered archive {} with id code 0x{:08X}", archive->GetName(),
static_cast<u32>(id_code));
return RESULT_SUCCESS;
}
ResultVal<std::shared_ptr<File>> OpenFileFromArchive(ArchiveHandle archive_handle,
const FileSys::Path& path,
const FileSys::Mode mode) {
ArchiveBackend* archive = GetArchive(archive_handle);
if (archive == nullptr)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
auto backend = archive->OpenFile(path, mode);
if (backend.Failed())
return backend.Code();
auto file = std::shared_ptr<File>(new File(std::move(backend).Unwrap(), path));
return MakeResult<std::shared_ptr<File>>(std::move(file));
}
ResultCode DeleteFileFromArchive(ArchiveHandle archive_handle, const FileSys::Path& path) {
ArchiveBackend* archive = GetArchive(archive_handle);
if (archive == nullptr)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
return archive->DeleteFile(path);
}
ResultCode RenameFileBetweenArchives(ArchiveHandle src_archive_handle,
const FileSys::Path& src_path,
ArchiveHandle dest_archive_handle,
const FileSys::Path& dest_path) {
ArchiveBackend* src_archive = GetArchive(src_archive_handle);
ArchiveBackend* dest_archive = GetArchive(dest_archive_handle);
if (src_archive == nullptr || dest_archive == nullptr)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
if (src_archive == dest_archive) {
return src_archive->RenameFile(src_path, dest_path);
} else {
// TODO: Implement renaming across archives
return UnimplementedFunction(ErrorModule::FS);
}
}
ResultCode DeleteDirectoryFromArchive(ArchiveHandle archive_handle, const FileSys::Path& path) {
ArchiveBackend* archive = GetArchive(archive_handle);
if (archive == nullptr)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
return archive->DeleteDirectory(path);
}
ResultCode DeleteDirectoryRecursivelyFromArchive(ArchiveHandle archive_handle,
const FileSys::Path& path) {
ArchiveBackend* archive = GetArchive(archive_handle);
if (archive == nullptr)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
return archive->DeleteDirectoryRecursively(path);
}
ResultCode CreateFileInArchive(ArchiveHandle archive_handle, const FileSys::Path& path,
u64 file_size) {
ArchiveBackend* archive = GetArchive(archive_handle);
if (archive == nullptr)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
return archive->CreateFile(path, file_size);
}
ResultCode CreateDirectoryFromArchive(ArchiveHandle archive_handle, const FileSys::Path& path) {
ArchiveBackend* archive = GetArchive(archive_handle);
if (archive == nullptr)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
return archive->CreateDirectory(path);
}
ResultCode RenameDirectoryBetweenArchives(ArchiveHandle src_archive_handle,
const FileSys::Path& src_path,
ArchiveHandle dest_archive_handle,
const FileSys::Path& dest_path) {
ArchiveBackend* src_archive = GetArchive(src_archive_handle);
ArchiveBackend* dest_archive = GetArchive(dest_archive_handle);
if (src_archive == nullptr || dest_archive == nullptr)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
if (src_archive == dest_archive) {
return src_archive->RenameDirectory(src_path, dest_path);
} else {
// TODO: Implement renaming across archives
return UnimplementedFunction(ErrorModule::FS);
}
}
ResultVal<std::shared_ptr<Directory>> OpenDirectoryFromArchive(ArchiveHandle archive_handle,
const FileSys::Path& path) {
ArchiveBackend* archive = GetArchive(archive_handle);
if (archive == nullptr)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
auto backend = archive->OpenDirectory(path);
if (backend.Failed())
return backend.Code();
auto directory = std::shared_ptr<Directory>(new Directory(std::move(backend).Unwrap(), path));
return MakeResult<std::shared_ptr<Directory>>(std::move(directory));
}
ResultVal<u64> GetFreeBytesInArchive(ArchiveHandle archive_handle) {
ArchiveBackend* archive = GetArchive(archive_handle);
if (archive == nullptr)
return FileSys::ERR_INVALID_ARCHIVE_HANDLE;
return MakeResult<u64>(archive->GetFreeBytes());
}
ResultCode FormatArchive(ArchiveIdCode id_code, const FileSys::ArchiveFormatInfo& format_info,
const FileSys::Path& path) {
auto archive_itr = id_code_map.find(id_code);
if (archive_itr == id_code_map.end()) {
return UnimplementedFunction(ErrorModule::FS); // TODO(Subv): Find the right error
}
return archive_itr->second->Format(path, format_info);
}
ResultVal<FileSys::ArchiveFormatInfo> GetArchiveFormatInfo(ArchiveIdCode id_code,
FileSys::Path& archive_path) {
auto archive = id_code_map.find(id_code);
if (archive == id_code_map.end()) {
return UnimplementedFunction(ErrorModule::FS); // TODO(Subv): Find the right error
}
return archive->second->GetFormatInfo(archive_path);
}
ResultCode CreateExtSaveData(MediaType media_type, u32 high, u32 low,
const std::vector<u8>& smdh_icon,
const FileSys::ArchiveFormatInfo& format_info) {
// Construct the binary path to the archive first
FileSys::Path path =
FileSys::ConstructExtDataBinaryPath(static_cast<u32>(media_type), high, low);
auto archive = id_code_map.find(media_type == MediaType::NAND ? ArchiveIdCode::SharedExtSaveData
: ArchiveIdCode::ExtSaveData);
if (archive == id_code_map.end()) {
return UnimplementedFunction(ErrorModule::FS); // TODO(Subv): Find the right error
}
auto ext_savedata = static_cast<FileSys::ArchiveFactory_ExtSaveData*>(archive->second.get());
ResultCode result = ext_savedata->Format(path, format_info);
if (result.IsError())
return result;
ext_savedata->WriteIcon(path, smdh_icon.data(), smdh_icon.size());
return RESULT_SUCCESS;
}
ResultCode DeleteExtSaveData(MediaType media_type, u32 high, u32 low) {
// Construct the binary path to the archive first
FileSys::Path path =
FileSys::ConstructExtDataBinaryPath(static_cast<u32>(media_type), high, low);
std::string media_type_directory;
if (media_type == MediaType::NAND) {
media_type_directory = FileUtil::GetUserPath(FileUtil::UserPath::NANDDir);
} else if (media_type == MediaType::SDMC) {
media_type_directory = FileUtil::GetUserPath(FileUtil::UserPath::SDMCDir);
} else {
LOG_ERROR(Service_FS, "Unsupported media type {}", static_cast<u32>(media_type));
return ResultCode(-1); // TODO(Subv): Find the right error code
}
// Delete all directories (/user, /boss) and the icon file.
std::string base_path =
FileSys::GetExtDataContainerPath(media_type_directory, media_type == MediaType::NAND);
std::string extsavedata_path = FileSys::GetExtSaveDataPath(base_path, path);
if (FileUtil::Exists(extsavedata_path) && !FileUtil::DeleteDirRecursively(extsavedata_path))
return ResultCode(-1); // TODO(Subv): Find the right error code
return RESULT_SUCCESS;
}
ResultCode DeleteSystemSaveData(u32 high, u32 low) {
// Construct the binary path to the archive first
FileSys::Path path = FileSys::ConstructSystemSaveDataBinaryPath(high, low);
std::string nand_directory = FileUtil::GetUserPath(FileUtil::UserPath::NANDDir);
std::string base_path = FileSys::GetSystemSaveDataContainerPath(nand_directory);
std::string systemsavedata_path = FileSys::GetSystemSaveDataPath(base_path, path);
if (!FileUtil::DeleteDirRecursively(systemsavedata_path))
return ResultCode(-1); // TODO(Subv): Find the right error code
return RESULT_SUCCESS;
}
ResultCode CreateSystemSaveData(u32 high, u32 low) {
// Construct the binary path to the archive first
FileSys::Path path = FileSys::ConstructSystemSaveDataBinaryPath(high, low);
std::string nand_directory = FileUtil::GetUserPath(FileUtil::UserPath::NANDDir);
std::string base_path = FileSys::GetSystemSaveDataContainerPath(nand_directory);
std::string systemsavedata_path = FileSys::GetSystemSaveDataPath(base_path, path);
if (!FileUtil::CreateFullPath(systemsavedata_path))
return ResultCode(-1); // TODO(Subv): Find the right error code
return RESULT_SUCCESS;
}
void RegisterArchiveTypes() {
// TODO(Subv): Add the other archive types (see here for the known types:
// http://3dbrew.org/wiki/FS:OpenArchive#Archive_idcodes).
std::string sdmc_directory = FileUtil::GetUserPath(FileUtil::UserPath::SDMCDir);
std::string nand_directory = FileUtil::GetUserPath(FileUtil::UserPath::NANDDir);
auto sdmc_factory = std::make_unique<FileSys::ArchiveFactory_SDMC>(sdmc_directory);
if (sdmc_factory->Initialize())
RegisterArchiveType(std::move(sdmc_factory), ArchiveIdCode::SDMC);
else
LOG_ERROR(Service_FS, "Can't instantiate SDMC archive with path {}", sdmc_directory);
auto sdmcwo_factory = std::make_unique<FileSys::ArchiveFactory_SDMCWriteOnly>(sdmc_directory);
if (sdmcwo_factory->Initialize())
RegisterArchiveType(std::move(sdmcwo_factory), ArchiveIdCode::SDMCWriteOnly);
else
LOG_ERROR(Service_FS, "Can't instantiate SDMCWriteOnly archive with path {}",
sdmc_directory);
// Create the SaveData archive
auto sd_savedata_source = std::make_shared<FileSys::ArchiveSource_SDSaveData>(sdmc_directory);
auto savedata_factory = std::make_unique<FileSys::ArchiveFactory_SaveData>(sd_savedata_source);
RegisterArchiveType(std::move(savedata_factory), ArchiveIdCode::SaveData);
auto other_savedata_permitted_factory =
std::make_unique<FileSys::ArchiveFactory_OtherSaveDataPermitted>(sd_savedata_source);
RegisterArchiveType(std::move(other_savedata_permitted_factory),
ArchiveIdCode::OtherSaveDataPermitted);
auto other_savedata_general_factory =
std::make_unique<FileSys::ArchiveFactory_OtherSaveDataGeneral>(sd_savedata_source);
RegisterArchiveType(std::move(other_savedata_general_factory),
ArchiveIdCode::OtherSaveDataGeneral);
auto extsavedata_factory =
std::make_unique<FileSys::ArchiveFactory_ExtSaveData>(sdmc_directory, false);
RegisterArchiveType(std::move(extsavedata_factory), ArchiveIdCode::ExtSaveData);
auto sharedextsavedata_factory =
std::make_unique<FileSys::ArchiveFactory_ExtSaveData>(nand_directory, true);
RegisterArchiveType(std::move(sharedextsavedata_factory), ArchiveIdCode::SharedExtSaveData);
// Create the NCCH archive, basically a small variation of the RomFS archive
auto savedatacheck_factory = std::make_unique<FileSys::ArchiveFactory_NCCH>();
RegisterArchiveType(std::move(savedatacheck_factory), ArchiveIdCode::NCCH);
auto systemsavedata_factory =
std::make_unique<FileSys::ArchiveFactory_SystemSaveData>(nand_directory);
RegisterArchiveType(std::move(systemsavedata_factory), ArchiveIdCode::SystemSaveData);
auto selfncch_factory = std::make_unique<FileSys::ArchiveFactory_SelfNCCH>();
RegisterArchiveType(std::move(selfncch_factory), ArchiveIdCode::SelfNCCH);
}
void RegisterSelfNCCH(Loader::AppLoader& app_loader) {
auto itr = id_code_map.find(ArchiveIdCode::SelfNCCH);
if (itr == id_code_map.end()) {
LOG_ERROR(Service_FS,
"Could not register a new NCCH because the SelfNCCH archive hasn't been created");
return;
}
auto* factory = static_cast<FileSys::ArchiveFactory_SelfNCCH*>(itr->second.get());
factory->Register(app_loader);
}
void UnregisterArchiveTypes() {
id_code_map.clear();
}
/// Initialize archives
void ArchiveInit() {
next_handle = 1;
RegisterArchiveTypes();
}
/// Shutdown archives
void ArchiveShutdown() {
handle_map.clear();
UnregisterArchiveTypes();
}
} // namespace Service::FS
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