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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_NATIVE_MEDIA_FILE_UTIL_H_
#define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_NATIVE_MEDIA_FILE_UTIL_H_
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "storage/browser/fileapi/async_file_util.h"
namespace net {
class IOBuffer;
}
class MediaPathFilter;
// This class handles native file system operations with media type filtering.
// To support virtual file systems it implements the AsyncFileUtil interface
// from scratch and provides synchronous override points.
class NativeMediaFileUtil : public storage::AsyncFileUtil {
public:
explicit NativeMediaFileUtil(MediaPathFilter* media_path_filter);
~NativeMediaFileUtil() override;
// Uses the MIME sniffer code, which actually looks into the file,
// to determine if it is really a media file (to avoid exposing
// non-media files with a media file extension.)
static base::File::Error IsMediaFile(const base::FilePath& path);
static base::File::Error BufferIsMediaHeader(net::IOBuffer* buf,
size_t length);
// Methods to support CreateOrOpen. Public so they can be shared with
// DeviceMediaAsyncFileUtil.
static void CreatedSnapshotFileForCreateOrOpen(
base::SequencedTaskRunner* media_task_runner,
int file_flags,
const storage::AsyncFileUtil::CreateOrOpenCallback& callback,
base::File::Error result,
const base::File::Info& file_info,
const base::FilePath& platform_path,
const scoped_refptr<storage::ShareableFileReference>& file_ref);
// AsyncFileUtil overrides.
void CreateOrOpen(scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
int file_flags,
const CreateOrOpenCallback& callback) override;
void EnsureFileExists(scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const EnsureFileExistsCallback& callback) override;
void CreateDirectory(scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
bool exclusive,
bool recursive,
const StatusCallback& callback) override;
void GetFileInfo(scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const GetFileInfoCallback& callback) override;
void ReadDirectory(scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const ReadDirectoryCallback& callback) override;
void Touch(scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const base::Time& last_access_time,
const base::Time& last_modified_time,
const StatusCallback& callback) override;
void Truncate(scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
int64 length,
const StatusCallback& callback) override;
void CopyFileLocal(scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& src_url,
const storage::FileSystemURL& dest_url,
CopyOrMoveOption option,
const CopyFileProgressCallback& progress_callback,
const StatusCallback& callback) override;
void MoveFileLocal(scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& src_url,
const storage::FileSystemURL& dest_url,
CopyOrMoveOption option,
const StatusCallback& callback) override;
void CopyInForeignFile(
scoped_ptr<storage::FileSystemOperationContext> context,
const base::FilePath& src_file_path,
const storage::FileSystemURL& dest_url,
const StatusCallback& callback) override;
void DeleteFile(scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const StatusCallback& callback) override;
void DeleteDirectory(scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const StatusCallback& callback) override;
void DeleteRecursively(
scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const StatusCallback& callback) override;
void CreateSnapshotFile(
scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const CreateSnapshotFileCallback& callback) override;
protected:
virtual void CreateDirectoryOnTaskRunnerThread(
scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
bool exclusive,
bool recursive,
const StatusCallback& callback);
virtual void GetFileInfoOnTaskRunnerThread(
scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const GetFileInfoCallback& callback);
virtual void ReadDirectoryOnTaskRunnerThread(
scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const ReadDirectoryCallback& callback);
virtual void CopyOrMoveFileLocalOnTaskRunnerThread(
scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& src_url,
const storage::FileSystemURL& dest_url,
CopyOrMoveOption option,
bool copy,
const StatusCallback& callback);
virtual void CopyInForeignFileOnTaskRunnerThread(
scoped_ptr<storage::FileSystemOperationContext> context,
const base::FilePath& src_file_path,
const storage::FileSystemURL& dest_url,
const StatusCallback& callback);
virtual void DeleteFileOnTaskRunnerThread(
scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const StatusCallback& callback);
virtual void DeleteDirectoryOnTaskRunnerThread(
scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const StatusCallback& callback);
virtual void CreateSnapshotFileOnTaskRunnerThread(
scoped_ptr<storage::FileSystemOperationContext> context,
const storage::FileSystemURL& url,
const CreateSnapshotFileCallback& callback);
// The following methods should only be called on the task runner thread.
// Necessary for copy/move to succeed.
virtual base::File::Error CreateDirectorySync(
storage::FileSystemOperationContext* context,
const storage::FileSystemURL& url,
bool exclusive,
bool recursive);
virtual base::File::Error CopyOrMoveFileSync(
storage::FileSystemOperationContext* context,
const storage::FileSystemURL& src_url,
const storage::FileSystemURL& dest_url,
CopyOrMoveOption option,
bool copy);
virtual base::File::Error CopyInForeignFileSync(
storage::FileSystemOperationContext* context,
const base::FilePath& src_file_path,
const storage::FileSystemURL& dest_url);
virtual base::File::Error GetFileInfoSync(
storage::FileSystemOperationContext* context,
const storage::FileSystemURL& url,
base::File::Info* file_info,
base::FilePath* platform_path);
// Called by GetFileInfoSync. Meant to be overridden by subclasses that
// have special mappings from URLs to platform paths (virtual filesystems).
virtual base::File::Error GetLocalFilePath(
storage::FileSystemOperationContext* context,
const storage::FileSystemURL& file_system_url,
base::FilePath* local_file_path);
virtual base::File::Error ReadDirectorySync(
storage::FileSystemOperationContext* context,
const storage::FileSystemURL& url,
EntryList* file_list);
virtual base::File::Error DeleteFileSync(
storage::FileSystemOperationContext* context,
const storage::FileSystemURL& url);
// Necessary for move to succeed.
virtual base::File::Error DeleteDirectorySync(
storage::FileSystemOperationContext* context,
const storage::FileSystemURL& url);
virtual base::File::Error CreateSnapshotFileSync(
storage::FileSystemOperationContext* context,
const storage::FileSystemURL& url,
base::File::Info* file_info,
base::FilePath* platform_path,
scoped_refptr<storage::ShareableFileReference>* file_ref);
MediaPathFilter* media_path_filter() {
return media_path_filter_;
}
private:
// Like GetLocalFilePath(), but always take media_path_filter() into
// consideration. If the media_path_filter() check fails, return
// Fila::FILE_ERROR_SECURITY. |local_file_path| does not have to exist.
base::File::Error GetFilteredLocalFilePath(
storage::FileSystemOperationContext* context,
const storage::FileSystemURL& file_system_url,
base::FilePath* local_file_path);
// Like GetLocalFilePath(), but if the file does not exist, then return
// |failure_error|.
// If |local_file_path| is a file, then take media_path_filter() into
// consideration.
// If the media_path_filter() check fails, return |failure_error|.
// If |local_file_path| is a directory, return File::FILE_OK.
base::File::Error GetFilteredLocalFilePathForExistingFileOrDirectory(
storage::FileSystemOperationContext* context,
const storage::FileSystemURL& file_system_url,
base::File::Error failure_error,
base::FilePath* local_file_path);
// Not owned, owned by the backend which owns this.
MediaPathFilter* const media_path_filter_;
base::WeakPtrFactory<NativeMediaFileUtil> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(NativeMediaFileUtil);
};
#endif // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_NATIVE_MEDIA_FILE_UTIL_H_
|
