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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/file_path.h"
#include "base/logging.h"
#include "base/message_loop_proxy.h"
#include "base/platform_file.h"
#include "base/sequenced_task_runner.h"
#include "webkit/blob/local_file_stream_reader.h"
#include "webkit/fileapi/async_file_util_adapter.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_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/media/media_path_filter.h"
#include "webkit/fileapi/media/native_media_file_util.h"
#include "webkit/fileapi/native_file_util.h"
#if defined(SUPPORT_MTP_DEVICE_FILESYSTEM)
#include "webkit/fileapi/media/device_media_file_util.h"
#endif
namespace fileapi {
IsolatedMountPointProvider::IsolatedMountPointProvider(
const base::FilePath& profile_path)
: profile_path_(profile_path),
media_path_filter_(new MediaPathFilter()),
isolated_file_util_(new AsyncFileUtilAdapter(new IsolatedFileUtil())),
dragged_file_util_(new AsyncFileUtilAdapter(new DraggedFileUtil())),
native_media_file_util_(
new AsyncFileUtilAdapter(new NativeMediaFileUtil())) {
#if defined(SUPPORT_MTP_DEVICE_FILESYSTEM)
// TODO(kmadhusu): Initialize |device_media_file_util_| in
// initialization list.
device_media_file_util_.reset(
new AsyncFileUtilAdapter(new DeviceMediaFileUtil(profile_path_)));
#endif
}
IsolatedMountPointProvider::~IsolatedMountPointProvider() {
}
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();
}
bool IsolatedMountPointProvider::IsAccessAllowed(const FileSystemURL& url) {
return true;
}
bool IsolatedMountPointProvider::IsRestrictedFileName(
const base::FilePath& filename) const {
// TODO(kinuko): We need to check platform-specific restricted file names
// before we actually start allowing file creation in isolated file systems.
return false;
}
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();
case kFileSystemTypeNativeMedia:
return native_media_file_util_->sync_file_util();
case kFileSystemTypeDeviceMedia:
#if defined(SUPPORT_MTP_DEVICE_FILESYSTEM)
return device_media_file_util_->sync_file_util();
#endif
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();
case kFileSystemTypeNativeMedia:
return native_media_file_util_.get();
case kFileSystemTypeDeviceMedia:
#if defined(SUPPORT_MTP_DEVICE_FILESYSTEM)
return device_media_file_util_.get();
#endif
default:
NOTREACHED();
}
return NULL;
}
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 != 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 {
scoped_ptr<FileSystemOperationContext> operation_context(
new FileSystemOperationContext(context));
if (url.type() == kFileSystemTypeNativeMedia ||
url.type() == kFileSystemTypeDeviceMedia) {
operation_context->set_media_path_filter(media_path_filter_.get());
operation_context->set_task_runner(
context->task_runners()->media_task_runner());
}
#if defined(SUPPORT_MTP_DEVICE_FILESYSTEM)
if (url.type() == kFileSystemTypeDeviceMedia)
operation_context->set_mtp_device_delegate_url(url.filesystem_id());
#endif
return new LocalFileSystemOperation(context, operation_context.Pass());
}
webkit_blob::FileStreamReader*
IsolatedMountPointProvider::CreateFileStreamReader(
const FileSystemURL& url,
int64 offset,
const base::Time& expected_modification_time,
FileSystemContext* context) const {
return new webkit_blob::LocalFileStreamReader(
context->task_runners()->file_task_runner(),
url.path(), offset, expected_modification_time);
}
FileStreamWriter* IsolatedMountPointProvider::CreateFileStreamWriter(
const FileSystemURL& url,
int64 offset,
FileSystemContext* context) const {
return 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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