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gecko-dev/dom/devicestorage/DeviceStorage.h

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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 DeviceStorage_h
#define DeviceStorage_h
#include "nsIFile.h"
#include "nsIPrincipal.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/RefPtr.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/dom/DOMRequest.h"
#include "nsWeakReference.h"
#define DEVICESTORAGE_PICTURES "pictures"
#define DEVICESTORAGE_VIDEOS "videos"
#define DEVICESTORAGE_MUSIC "music"
#define DEVICESTORAGE_APPS "apps"
#define DEVICESTORAGE_SDCARD "sdcard"
#define DEVICESTORAGE_CRASHES "crashes"
class nsIInputStream;
class nsIOutputStream;
struct DeviceStorageFileDescriptor;
#ifdef MOZ_WIDGET_GONK
class nsIVolume;
#endif
namespace mozilla {
class EventListenerManager;
namespace dom {
class Blob;
struct DeviceStorageEnumerationParameters;
class DOMCursor;
class DOMRequest;
class Promise;
class DeviceStorageFileSystem;
} // namespace dom
namespace ipc {
class FileDescriptor;
class PrincipalInfo;
} // namespace ipc
} // namespace mozilla
class DeviceStorageRequest;
class DeviceStorageCursorRequest;
class DeviceStorageRequestManager;
class nsDOMDeviceStorageCursor;
class DeviceStorageFile final
: public nsISupports {
public:
nsCOMPtr<nsIFile> mFile;
nsString mStorageType;
nsString mStorageName;
nsString mRootDir;
nsString mPath;
bool mEditable;
nsString mMimeType;
uint64_t mLength;
uint64_t mLastModifiedDate;
// Used when the path will be set later via SetPath.
DeviceStorageFile(const nsAString& aStorageType,
const nsAString& aStorageName);
// Used for non-enumeration purposes.
DeviceStorageFile(const nsAString& aStorageType,
const nsAString& aStorageName,
const nsAString& aPath);
// Used for enumerations. When you call Enumerate, you can pass in a
// directory to enumerate and the results that are returned are relative to
// that directory, files related to an enumeration need to know the "root of
// the enumeration" directory.
DeviceStorageFile(const nsAString& aStorageType,
const nsAString& aStorageName,
const nsAString& aRootDir,
const nsAString& aPath);
void SetPath(const nsAString& aPath);
void SetEditable(bool aEditable);
static already_AddRefed<DeviceStorageFile>
CreateUnique(nsAString& aFileName,
uint32_t aFileType,
uint32_t aFileAttributes);
static already_AddRefed<DeviceStorageFile>
CreateUnique(const nsAString& aStorageType,
const nsAString& aStorageName,
nsAString& aFileName,
uint32_t aFileType,
uint32_t aFileAttributes);
NS_DECL_THREADSAFE_ISUPPORTS
bool IsAvailable();
void GetFullPath(nsAString& aFullPath);
// we want to make sure that the names of file can't reach
// outside of the type of storage the user asked for.
bool IsSafePath() const;
bool ValidateAndSplitPath(const nsAString& aPath,
nsTArray<nsString>* aParts = nullptr) const;
void Dump(const char* label);
nsresult Remove();
nsresult Write(nsIInputStream* aInputStream);
nsresult Write(InfallibleTArray<uint8_t>& bits);
nsresult Append(nsIInputStream* aInputStream);
nsresult Append(nsIInputStream* aInputStream,
nsIOutputStream* aOutputStream);
void CollectFiles(nsTArray<RefPtr<DeviceStorageFile> >& aFiles,
PRTime aSince = 0);
void collectFilesInternal(nsTArray<RefPtr<DeviceStorageFile> >& aFiles,
PRTime aSince, nsAString& aRootPath);
void AccumDiskUsage(uint64_t* aPicturesSoFar, uint64_t* aVideosSoFar,
uint64_t* aMusicSoFar, uint64_t* aTotalSoFar);
void GetStorageFreeSpace(int64_t* aSoFar);
void GetStatus(nsAString& aStatus);
void GetStorageStatus(nsAString& aStatus);
void DoFormat(nsAString& aStatus);
void DoMount(nsAString& aStatus);
void DoUnmount(nsAString& aStatus);
static void GetRootDirectoryForType(const nsAString& aStorageType,
const nsAString& aStorageName,
nsIFile** aFile);
nsresult CalculateSizeAndModifiedDate();
nsresult CalculateMimeType();
nsresult CreateFileDescriptor(mozilla::ipc::FileDescriptor& aFileDescriptor);
private:
~DeviceStorageFile() {}
void Init();
void AppendRelativePath(const nsAString& aPath);
void AccumDirectoryUsage(nsIFile* aFile,
uint64_t* aPicturesSoFar,
uint64_t* aVideosSoFar,
uint64_t* aMusicSoFar,
uint64_t* aTotalSoFar);
};
#define NS_DOM_DEVICE_STORAGE_CID \
{ 0xe4a9b969, 0x81fe, 0x44f1, \
{ 0xaa, 0x0c, 0x9e, 0x16, 0x64, 0x86, 0x2a, 0xd5 } }
class nsDOMDeviceStorage final
: public mozilla::DOMEventTargetHelper
, public nsSupportsWeakReference
{
typedef mozilla::ErrorResult ErrorResult;
typedef mozilla::dom::DeviceStorageEnumerationParameters
EnumerationParameters;
typedef mozilla::dom::DOMCursor DOMCursor;
typedef mozilla::dom::DOMRequest DOMRequest;
typedef mozilla::dom::Promise Promise;
typedef mozilla::dom::DeviceStorageFileSystem DeviceStorageFileSystem;
public:
typedef nsTArray<nsString> VolumeNameArray;
NS_DECLARE_STATIC_IID_ACCESSOR(NS_DOM_DEVICE_STORAGE_CID)
NS_DECL_ISUPPORTS_INHERITED
NS_REALLY_FORWARD_NSIDOMEVENTTARGET(DOMEventTargetHelper)
void EventListenerWasAdded(const nsAString& aType,
ErrorResult& aRv,
JSCompartment* aCompartment) override;
explicit nsDOMDeviceStorage(nsPIDOMWindowInner* aWindow);
static int InstanceCount() { return sInstanceCount; }
static void InvalidateVolumeCaches();
nsresult Init(nsPIDOMWindowInner* aWindow, const nsAString& aType,
const nsAString& aVolName);
bool IsAvailable();
bool IsFullPath(const nsAString& aPath)
{
return aPath.Length() > 0 && aPath.CharAt(0) == '/';
}
void SetRootDirectoryForType(const nsAString& aType,
const nsAString& aVolName);
// WebIDL
nsPIDOMWindowInner*
GetParentObject() const
{
return GetOwner();
}
virtual JSObject*
WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
IMPL_EVENT_HANDLER(change)
already_AddRefed<DOMRequest>
Add(mozilla::dom::Blob* aBlob, ErrorResult& aRv);
already_AddRefed<DOMRequest>
AddNamed(mozilla::dom::Blob* aBlob, const nsAString& aPath, ErrorResult& aRv);
already_AddRefed<DOMRequest>
AppendNamed(mozilla::dom::Blob* aBlob, const nsAString& aPath,
ErrorResult& aRv);
already_AddRefed<DOMRequest>
Get(const nsAString& aPath, ErrorResult& aRv)
{
return GetInternal(aPath, false, aRv);
}
already_AddRefed<DOMRequest>
GetEditable(const nsAString& aPath, ErrorResult& aRv)
{
return GetInternal(aPath, true, aRv);
}
already_AddRefed<DOMRequest>
Delete(const nsAString& aPath, ErrorResult& aRv);
already_AddRefed<DOMCursor>
Enumerate(const EnumerationParameters& aOptions, ErrorResult& aRv)
{
return Enumerate(NullString(), aOptions, aRv);
}
already_AddRefed<DOMCursor>
Enumerate(const nsAString& aPath, const EnumerationParameters& aOptions,
ErrorResult& aRv);
already_AddRefed<DOMCursor>
EnumerateEditable(const EnumerationParameters& aOptions, ErrorResult& aRv)
{
return EnumerateEditable(NullString(), aOptions, aRv);
}
already_AddRefed<DOMCursor>
EnumerateEditable(const nsAString& aPath,
const EnumerationParameters& aOptions, ErrorResult& aRv);
already_AddRefed<DOMRequest> FreeSpace(ErrorResult& aRv);
already_AddRefed<DOMRequest> UsedSpace(ErrorResult& aRv);
already_AddRefed<DOMRequest> Available(ErrorResult& aRv);
already_AddRefed<DOMRequest> Format(ErrorResult& aRv);
already_AddRefed<DOMRequest> StorageStatus(ErrorResult& aRv);
already_AddRefed<DOMRequest> Mount(ErrorResult& aRv);
already_AddRefed<DOMRequest> Unmount(ErrorResult& aRv);
already_AddRefed<DOMRequest> CreateFileDescriptor(const nsAString& aPath,
DeviceStorageFileDescriptor* aDSFD,
ErrorResult& aRv);
bool CanBeMounted();
bool CanBeFormatted();
bool CanBeShared();
bool IsRemovable();
bool LowDiskSpace();
bool Default();
void GetStorageName(nsAString& aStorageName);
already_AddRefed<Promise>
GetRoot(ErrorResult& aRv);
static void
CreateDeviceStorageFor(nsPIDOMWindowInner* aWin,
const nsAString& aType,
nsDOMDeviceStorage** aStore);
static void
CreateDeviceStorageByNameAndType(nsPIDOMWindowInner* aWin,
const nsAString& aName,
const nsAString& aType,
nsDOMDeviceStorage** aStore);
bool Equals(nsPIDOMWindowInner* aWin,
const nsAString& aName,
const nsAString& aType);
void Shutdown();
static void GetOrderedVolumeNames(const nsAString& aType,
nsTArray<nsString>& aVolumeNames);
static void GetOrderedVolumeNames(nsTArray<nsString>& aVolumeNames);
static void GetDefaultStorageName(const nsAString& aStorageType,
nsAString& aStorageName);
static bool ParseFullPath(const nsAString& aFullPath,
nsAString& aOutStorageName,
nsAString& aOutStoragePath);
// DeviceStorageStatics callbacks
void OnFileWatcherUpdate(const nsCString& aData, DeviceStorageFile* aFile);
void OnDiskSpaceWatcher(bool aLowDiskSpace);
void OnWritableNameChanged();
#ifdef MOZ_WIDGET_GONK
void OnVolumeStateChanged(nsIVolume* aVolume);
#endif
uint32_t CreateDOMRequest(DOMRequest** aRequest, ErrorResult& aRv);
uint32_t CreateDOMCursor(DeviceStorageCursorRequest* aRequest,
nsDOMDeviceStorageCursor** aCursor,
ErrorResult& aRv);
already_AddRefed<DOMRequest> CreateAndRejectDOMRequest(const char *aReason,
ErrorResult& aRv);
nsresult CheckPermission(already_AddRefed<DeviceStorageRequest>&& aRequest);
bool IsOwningThread();
nsresult DispatchToOwningThread(already_AddRefed<nsIRunnable>&& aRunnable);
private:
~nsDOMDeviceStorage();
static nsresult CheckPrincipal(nsPIDOMWindowInner* aWindow,
bool aIsAppsStorage,
nsIPrincipal** aPrincipal);
already_AddRefed<DOMRequest>
AddOrAppendNamed(mozilla::dom::Blob* aBlob, const nsAString& aPath,
bool aCreate, ErrorResult& aRv);
already_AddRefed<DOMRequest>
GetInternal(const nsAString& aPath, bool aEditable, ErrorResult& aRv);
void
DeleteInternal(nsPIDOMWindowInner* aWin, const nsAString& aPath,
DOMRequest* aRequest);
already_AddRefed<DOMCursor>
EnumerateInternal(const nsAString& aName,
const EnumerationParameters& aOptions, bool aEditable,
ErrorResult& aRv);
static int sInstanceCount;
nsString mStorageType;
nsCOMPtr<nsIFile> mRootDirectory;
nsString mStorageName;
bool mIsShareable;
bool mIsRemovable;
already_AddRefed<nsDOMDeviceStorage> GetStorage(const nsAString& aFullPath,
nsAString& aOutStoragePath);
already_AddRefed<nsDOMDeviceStorage>
GetStorageByName(const nsAString &aStorageName);
static already_AddRefed<nsDOMDeviceStorage>
GetStorageByNameAndType(nsPIDOMWindowInner* aWin,
const nsAString& aStorageName,
const nsAString& aType);
bool mIsDefaultLocation;
nsresult Notify(const char* aReason, class DeviceStorageFile* aFile);
friend class WatchFileEvent;
friend class DeviceStorageRequest;
static mozilla::StaticAutoPtr<nsTArray<nsString>> sVolumeNameCache;
#ifdef MOZ_WIDGET_GONK
nsString mLastStatus;
nsString mLastStorageStatus;
void DispatchStatusChangeEvent(nsAString& aStatus);
void DispatchStorageStatusChangeEvent(nsAString& aStorageStatus);
#endif
uint64_t mInnerWindowID;
RefPtr<DeviceStorageFileSystem> mFileSystem;
RefPtr<DeviceStorageRequestManager> mManager;
nsAutoPtr<mozilla::ipc::PrincipalInfo> mPrincipalInfo;
nsCOMPtr<nsIThread> mOwningThread;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsDOMDeviceStorage, NS_DOM_DEVICE_STORAGE_CID)
#endif
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