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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.
#include "webkit/fileapi/isolated_mount_point_provider.h"
#include <string>
#include "base/bind.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/message_loop_proxy.h"
#include "base/platform_file.h"
#include "base/task/sequenced_task_runner.h"
#include "webkit/blob/local_file_stream_reader.h"
#include "webkit/fileapi/async_file_util_adapter.h"
#include "webkit/fileapi/copy_or_move_file_validator.h"
#include "webkit/fileapi/file_system_callback_dispatcher.h"
#include "webkit/fileapi/file_system_context.h"
#include "webkit/fileapi/file_system_file_stream_reader.h"
#include "webkit/fileapi/file_system_operation_context.h"
#include "webkit/fileapi/file_system_task_runners.h"
#include "webkit/fileapi/file_system_types.h"
#include "webkit/fileapi/file_system_util.h"
#include "webkit/fileapi/isolated_context.h"
#include "webkit/fileapi/isolated_file_util.h"
#include "webkit/fileapi/local_file_stream_writer.h"
#include "webkit/fileapi/local_file_system_operation.h"
#include "webkit/fileapi/native_file_util.h"
namespace fileapi {
IsolatedMountPointProvider::IsolatedMountPointProvider()
: isolated_file_util_(new AsyncFileUtilAdapter(new IsolatedFileUtil())),
dragged_file_util_(new AsyncFileUtilAdapter(new DraggedFileUtil())) {
}
IsolatedMountPointProvider::~IsolatedMountPointProvider() {
}
bool IsolatedMountPointProvider::CanHandleType(FileSystemType type) const {
switch (type) {
case kFileSystemTypeIsolated:
case kFileSystemTypeDragged:
return true;
#if !defined(OS_CHROMEOS)
case kFileSystemTypeNativeLocal:
case kFileSystemTypeNativeForPlatformApp:
return true;
#endif
default:
return false;
}
}
void IsolatedMountPointProvider::ValidateFileSystemRoot(
const GURL& origin_url,
FileSystemType type,
bool create,
const ValidateFileSystemCallback& callback) {
// We never allow opening a new isolated FileSystem via usual OpenFileSystem.
base::MessageLoopProxy::current()->PostTask(
FROM_HERE,
base::Bind(callback, base::PLATFORM_FILE_ERROR_SECURITY));
}
base::FilePath IsolatedMountPointProvider::GetFileSystemRootPathOnFileThread(
const FileSystemURL& url,
bool create) {
// This is not supposed to be used.
NOTREACHED();
return base::FilePath();
}
FileSystemFileUtil* IsolatedMountPointProvider::GetFileUtil(
FileSystemType type) {
switch (type) {
case kFileSystemTypeNativeLocal:
return isolated_file_util_->sync_file_util();
case kFileSystemTypeDragged:
return dragged_file_util_->sync_file_util();
default:
NOTREACHED();
}
return NULL;
}
AsyncFileUtil* IsolatedMountPointProvider::GetAsyncFileUtil(
FileSystemType type) {
switch (type) {
case kFileSystemTypeNativeLocal:
return isolated_file_util_.get();
case kFileSystemTypeDragged:
return dragged_file_util_.get();
default:
NOTREACHED();
}
return NULL;
}
CopyOrMoveFileValidatorFactory*
IsolatedMountPointProvider::GetCopyOrMoveFileValidatorFactory(
FileSystemType type, base::PlatformFileError* error_code) {
DCHECK(error_code);
*error_code = base::PLATFORM_FILE_OK;
return NULL;
}
void IsolatedMountPointProvider::InitializeCopyOrMoveFileValidatorFactory(
FileSystemType type,
scoped_ptr<CopyOrMoveFileValidatorFactory> factory) {
DCHECK(!factory);
}
FilePermissionPolicy IsolatedMountPointProvider::GetPermissionPolicy(
const FileSystemURL& url, int permissions) const {
if (url.type() == kFileSystemTypeDragged && url.path().empty()) {
// The root directory of the dragged filesystem must be always read-only.
if (permissions & ~fileapi::kReadFilePermissions)
return FILE_PERMISSION_ALWAYS_DENY;
}
// Access to isolated file systems should be checked using per-filesystem
// access permission.
return FILE_PERMISSION_USE_FILESYSTEM_PERMISSION;
}
FileSystemOperation* IsolatedMountPointProvider::CreateFileSystemOperation(
const FileSystemURL& url,
FileSystemContext* context,
base::PlatformFileError* error_code) const {
return new LocalFileSystemOperation(
context, make_scoped_ptr(new FileSystemOperationContext(context)));
}
scoped_ptr<webkit_blob::FileStreamReader>
IsolatedMountPointProvider::CreateFileStreamReader(
const FileSystemURL& url,
int64 offset,
const base::Time& expected_modification_time,
FileSystemContext* context) const {
return scoped_ptr<webkit_blob::FileStreamReader>(
new webkit_blob::LocalFileStreamReader(
context->task_runners()->file_task_runner(),
url.path(), offset, expected_modification_time));
}
scoped_ptr<FileStreamWriter> IsolatedMountPointProvider::CreateFileStreamWriter(
const FileSystemURL& url,
int64 offset,
FileSystemContext* context) const {
return scoped_ptr<FileStreamWriter>(
new LocalFileStreamWriter(url.path(), offset));
}
FileSystemQuotaUtil* IsolatedMountPointProvider::GetQuotaUtil() {
// No quota support.
return NULL;
}
void IsolatedMountPointProvider::DeleteFileSystem(
const GURL& origin_url,
FileSystemType type,
FileSystemContext* context,
const DeleteFileSystemCallback& callback) {
NOTREACHED();
callback.Run(base::PLATFORM_FILE_ERROR_INVALID_OPERATION);
}
} // namespace fileapi
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