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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_quota_filestreams_h__
#define mozilla_dom_quota_filestreams_h__
// Local includes
#include "Client.h"
// Global includes
#include <cstdint>
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/RefPtr.h"
#include "mozilla/dom/quota/CommonMetadata.h"
#include "mozilla/dom/quota/PersistenceType.h"
#include "mozilla/dom/quota/QuotaObject.h"
#include "nsFileStreams.h"
#include "nsISupports.h"
#include "nscore.h"
class nsIFile;
namespace mozilla {
class Runnable;
}
namespace mozilla::dom::quota {
class QuotaObject;
template <class FileStreamBase>
class FileQuotaStream : public FileStreamBase {
public:
// nsFileStreamBase override
NS_IMETHOD
SetEOF() override;
NS_IMETHOD
Close() override;
protected:
FileQuotaStream(PersistenceType aPersistenceType,
const OriginMetadata& aOriginMetadata,
Client::Type aClientType)
: mPersistenceType(aPersistenceType),
mOriginMetadata(aOriginMetadata),
mClientType(aClientType),
mDeserialized(false) {}
FileQuotaStream()
: mPersistenceType(PERSISTENCE_TYPE_INVALID),
mClientType(Client::TYPE_MAX),
mDeserialized(true) {}
~FileQuotaStream() { Close(); }
// nsFileStreamBase override
virtual nsresult DoOpen() override;
PersistenceType mPersistenceType;
OriginMetadata mOriginMetadata;
Client::Type mClientType;
RefPtr<QuotaObject> mQuotaObject;
const bool mDeserialized;
};
template <class FileStreamBase>
class FileQuotaStreamWithWrite : public FileQuotaStream<FileStreamBase> {
public:
// nsFileStreamBase override
NS_IMETHOD
Write(const char* aBuf, uint32_t aCount, uint32_t* _retval) override;
protected:
FileQuotaStreamWithWrite(PersistenceType aPersistenceType,
const OriginMetadata& aOriginMetadata,
Client::Type aClientType)
: FileQuotaStream<FileStreamBase>(aPersistenceType, aOriginMetadata,
aClientType) {}
FileQuotaStreamWithWrite() = default;
};
class FileInputStream : public FileQuotaStream<nsFileInputStream> {
public:
NS_INLINE_DECL_REFCOUNTING_INHERITED(FileInputStream,
FileQuotaStream<nsFileInputStream>)
FileInputStream(PersistenceType aPersistenceType,
const OriginMetadata& aOriginMetadata,
Client::Type aClientType)
: FileQuotaStream<nsFileInputStream>(aPersistenceType, aOriginMetadata,
aClientType) {}
private:
virtual ~FileInputStream() { Close(); }
};
class FileOutputStream : public FileQuotaStreamWithWrite<nsFileOutputStream> {
public:
NS_INLINE_DECL_REFCOUNTING_INHERITED(
FileOutputStream, FileQuotaStreamWithWrite<nsFileOutputStream>);
FileOutputStream(PersistenceType aPersistenceType,
const OriginMetadata& aOriginMetadata,
Client::Type aClientType)
: FileQuotaStreamWithWrite<nsFileOutputStream>(
aPersistenceType, aOriginMetadata, aClientType) {}
private:
virtual ~FileOutputStream() { Close(); }
};
// FileRandomAccessStream type is serializable, but only in a restricted
// manner. The type is only safe to serialize in the parent process and only
// when the type hasn't been previously deserialized. So the type can be
// serialized in the parent process and desrialized in a child process or it
// can be serialized in the parent process and deserialized in the parent
// process as well (non-e10s mode). The same type can never be
// serialized/deserialized more than once.
class FileRandomAccessStream
: public FileQuotaStreamWithWrite<nsFileRandomAccessStream> {
public:
NS_INLINE_DECL_REFCOUNTING_INHERITED(
FileRandomAccessStream,
FileQuotaStreamWithWrite<nsFileRandomAccessStream>)
FileRandomAccessStream(PersistenceType aPersistenceType,
const OriginMetadata& aOriginMetadata,
Client::Type aClientType)
: FileQuotaStreamWithWrite<nsFileRandomAccessStream>(
aPersistenceType, aOriginMetadata, aClientType) {}
FileRandomAccessStream() = default;
// nsFileRandomAccessStream override
// Serialize this FileRandomAccessStream. This method works only in the
// parent process and only with streams which haven't been previously
// deserialized.
mozilla::ipc::RandomAccessStreamParams Serialize(
nsIInterfaceRequestor* aCallbacks) override;
// Deserialize this FileRandomAccessStream. This method works in both the
// child and parent.
bool Deserialize(mozilla::ipc::RandomAccessStreamParams& aParams) override;
private:
virtual ~FileRandomAccessStream() { Close(); }
};
Result<MovingNotNull<nsCOMPtr<nsIInputStream>>, nsresult> CreateFileInputStream(
PersistenceType aPersistenceType, const OriginMetadata& aOriginMetadata,
Client::Type aClientType, nsIFile* aFile, int32_t aIOFlags = -1,
int32_t aPerm = -1, int32_t aBehaviorFlags = 0);
Result<MovingNotNull<nsCOMPtr<nsIOutputStream>>, nsresult>
CreateFileOutputStream(PersistenceType aPersistenceType,
const OriginMetadata& aOriginMetadata,
Client::Type aClientType, nsIFile* aFile,
int32_t aIOFlags = -1, int32_t aPerm = -1,
int32_t aBehaviorFlags = 0);
Result<MovingNotNull<nsCOMPtr<nsIRandomAccessStream>>, nsresult>
CreateFileRandomAccessStream(PersistenceType aPersistenceType,
const OriginMetadata& aOriginMetadata,
Client::Type aClientType, nsIFile* aFile,
int32_t aIOFlags = -1, int32_t aPerm = -1,
int32_t aBehaviorFlags = 0);
} // namespace mozilla::dom::quota
#endif /* mozilla_dom_quota_filestreams_h__ */
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