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// SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <functional>
#include <optional>
#include <string>
#include "common/common_types.h"
#include "core/file_sys/vfs/vfs_types.h"
#include "core/hle/result.h"
#include "core/hle/service/kernel_helpers.h"
namespace Core {
class System;
}
namespace Kernel {
class KernelCore;
class KEvent;
class KReadableEvent;
} // namespace Kernel
namespace Service::BCAT {
struct DeliveryCacheProgressImpl;
using DirectoryGetter = std::function<FileSys::VirtualDir(u64)>;
using Passphrase = std::array<u8, 0x20>;
struct TitleIDVersion {
u64 title_id;
u64 build_id;
};
using DirectoryName = std::array<char, 0x20>;
using FileName = std::array<char, 0x20>;
struct DeliveryCacheProgressImpl {
enum class Status : s32 {
None = 0x0,
Queued = 0x1,
Connecting = 0x2,
ProcessingDataList = 0x3,
Downloading = 0x4,
Committing = 0x5,
Done = 0x9,
};
Status status;
Result result = ResultSuccess;
DirectoryName current_directory;
FileName current_file;
s64 current_downloaded_bytes; ///< Bytes downloaded on current file.
s64 current_total_bytes; ///< Bytes total on current file.
s64 total_downloaded_bytes; ///< Bytes downloaded on overall download.
s64 total_bytes; ///< Bytes total on overall download.
INSERT_PADDING_BYTES(
0x198); ///< Appears to be unused in official code, possibly reserved for future use.
};
static_assert(sizeof(DeliveryCacheProgressImpl) == 0x200,
"DeliveryCacheProgressImpl has incorrect size.");
// A class to manage the signalling to the game about BCAT download progress.
// Some of this class is implemented in module.cpp to avoid exposing the implementation structure.
class ProgressServiceBackend {
friend class IBcatService;
public:
~ProgressServiceBackend();
// Sets the number of bytes total in the entire download.
void SetTotalSize(u64 size);
// Notifies the application that the backend has started connecting to the server.
void StartConnecting();
// Notifies the application that the backend has begun accumulating and processing metadata.
void StartProcessingDataList();
// Notifies the application that a file is starting to be downloaded.
void StartDownloadingFile(std::string_view dir_name, std::string_view file_name, u64 file_size);
// Updates the progress of the current file to the size passed.
void UpdateFileProgress(u64 downloaded);
// Notifies the application that the current file has completed download.
void FinishDownloadingFile();
// Notifies the application that all files in this directory have completed and are being
// finalized.
void CommitDirectory(std::string_view dir_name);
// Notifies the application that the operation completed with result code result.
void FinishDownload(Result result);
private:
explicit ProgressServiceBackend(Core::System& system, std::string_view event_name);
Kernel::KReadableEvent& GetEvent();
DeliveryCacheProgressImpl& GetImpl();
void SignalUpdate();
KernelHelpers::ServiceContext service_context;
DeliveryCacheProgressImpl impl{};
Kernel::KEvent* update_event;
};
// A class representing an abstract backend for BCAT functionality.
class Backend {
public:
explicit Backend(DirectoryGetter getter);
virtual ~Backend();
// Called when the backend is needed to synchronize the data for the game with title ID and
// version in title. A ProgressServiceBackend object is provided to alert the application of
// status.
virtual bool Synchronize(TitleIDVersion title, ProgressServiceBackend& progress) = 0;
// Very similar to Synchronize, but only for the directory provided. Backends should not alter
// the data for any other directories.
virtual bool SynchronizeDirectory(TitleIDVersion title, std::string name,
ProgressServiceBackend& progress) = 0;
// Removes all cached data associated with title id provided.
virtual bool Clear(u64 title_id) = 0;
// Sets the BCAT Passphrase to be used with the associated title ID.
virtual void SetPassphrase(u64 title_id, const Passphrase& passphrase) = 0;
// Gets the launch parameter used by AM associated with the title ID and version provided.
virtual std::optional<std::vector<u8>> GetLaunchParameter(TitleIDVersion title) = 0;
protected:
DirectoryGetter dir_getter;
};
// A backend of BCAT that provides no operation.
class NullBackend : public Backend {
public:
explicit NullBackend(DirectoryGetter getter);
~NullBackend() override;
bool Synchronize(TitleIDVersion title, ProgressServiceBackend& progress) override;
bool SynchronizeDirectory(TitleIDVersion title, std::string name,
ProgressServiceBackend& progress) override;
bool Clear(u64 title_id) override;
void SetPassphrase(u64 title_id, const Passphrase& passphrase) override;
std::optional<std::vector<u8>> GetLaunchParameter(TitleIDVersion title) override;
};
std::unique_ptr<Backend> CreateBackendFromSettings(Core::System& system, DirectoryGetter getter);
} // namespace Service::BCAT
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