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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/file_system_context.h"
#include "base/bind.h"
#include "base/stl_util.h"
#include "base/single_thread_task_runner.h"
#include "googleurl/src/gurl.h"
#include "webkit/fileapi/external_mount_points.h"
#include "webkit/fileapi/file_system_file_util.h"
#include "webkit/fileapi/file_system_operation.h"
#include "webkit/fileapi/file_system_options.h"
#include "webkit/fileapi/file_system_quota_client.h"
#include "webkit/fileapi/file_system_task_runners.h"
#include "webkit/fileapi/file_system_url.h"
#include "webkit/fileapi/file_system_util.h"
#include "webkit/fileapi/isolated_context.h"
#include "webkit/fileapi/isolated_mount_point_provider.h"
#include "webkit/fileapi/mount_points.h"
#include "webkit/fileapi/sandbox_mount_point_provider.h"
#include "webkit/fileapi/syncable/local_file_change_tracker.h"
#include "webkit/fileapi/syncable/local_file_sync_context.h"
#include "webkit/fileapi/syncable/syncable_file_system_util.h"
#include "webkit/fileapi/test_mount_point_provider.h"
#include "webkit/quota/quota_manager.h"
#include "webkit/quota/special_storage_policy.h"
#if defined(OS_CHROMEOS)
#include "webkit/chromeos/fileapi/cros_mount_point_provider.h"
#endif
using quota::QuotaClient;
namespace fileapi {
namespace {
QuotaClient* CreateQuotaClient(
FileSystemContext* context,
bool is_incognito) {
return new FileSystemQuotaClient(context, is_incognito);
}
void DidOpenFileSystem(
const FileSystemContext::OpenFileSystemCallback& callback,
const GURL& filesystem_root,
const std::string& filesystem_name,
base::PlatformFileError error) {
callback.Run(error, filesystem_name, filesystem_root);
}
} // namespace
FileSystemContext::FileSystemContext(
scoped_ptr<FileSystemTaskRunners> task_runners,
ExternalMountPoints* external_mount_points,
quota::SpecialStoragePolicy* special_storage_policy,
quota::QuotaManagerProxy* quota_manager_proxy,
const base::FilePath& partition_path,
const FileSystemOptions& options)
: task_runners_(task_runners.Pass()),
quota_manager_proxy_(quota_manager_proxy),
sandbox_provider_(
new SandboxMountPointProvider(
quota_manager_proxy,
task_runners_->file_task_runner(),
partition_path,
options)),
isolated_provider_(new IsolatedMountPointProvider(partition_path)),
external_mount_points_(external_mount_points),
partition_path_(partition_path) {
DCHECK(task_runners_.get());
if (quota_manager_proxy) {
quota_manager_proxy->RegisterClient(CreateQuotaClient(
this, options.is_incognito()));
}
#if defined(OS_CHROMEOS)
DCHECK(external_mount_points);
external_provider_.reset(
new chromeos::CrosMountPointProvider(
special_storage_policy,
external_mount_points,
ExternalMountPoints::GetSystemInstance()));
#endif
if (external_mount_points)
url_crackers_.push_back(external_mount_points);
url_crackers_.push_back(ExternalMountPoints::GetSystemInstance());
url_crackers_.push_back(IsolatedContext::GetInstance());
}
bool FileSystemContext::DeleteDataForOriginOnFileThread(
const GURL& origin_url) {
DCHECK(task_runners_->file_task_runner()->RunsTasksOnCurrentThread());
DCHECK(sandbox_provider());
DCHECK(origin_url == origin_url.GetOrigin());
// Delete temporary and persistent data.
return
(sandbox_provider()->DeleteOriginDataOnFileThread(
this, quota_manager_proxy(), origin_url,
kFileSystemTypeTemporary) ==
base::PLATFORM_FILE_OK) &&
(sandbox_provider()->DeleteOriginDataOnFileThread(
this, quota_manager_proxy(), origin_url,
kFileSystemTypePersistent) ==
base::PLATFORM_FILE_OK) &&
(sandbox_provider()->DeleteOriginDataOnFileThread(
this, quota_manager_proxy(), origin_url,
kFileSystemTypeSyncable) ==
base::PLATFORM_FILE_OK);
}
FileSystemQuotaUtil*
FileSystemContext::GetQuotaUtil(FileSystemType type) const {
FileSystemMountPointProvider* mount_point_provider =
GetMountPointProvider(type);
if (!mount_point_provider)
return NULL;
return mount_point_provider->GetQuotaUtil();
}
AsyncFileUtil* FileSystemContext::GetAsyncFileUtil(
FileSystemType type) const {
FileSystemMountPointProvider* mount_point_provider =
GetMountPointProvider(type);
if (!mount_point_provider)
return NULL;
return mount_point_provider->GetAsyncFileUtil(type);
}
FileSystemMountPointProvider* FileSystemContext::GetMountPointProvider(
FileSystemType type) const {
switch (type) {
case kFileSystemTypeTemporary:
case kFileSystemTypePersistent:
case kFileSystemTypeSyncable:
return sandbox_provider_.get();
case kFileSystemTypeExternal:
case kFileSystemTypeDrive:
case kFileSystemTypeRestrictedNativeLocal:
return external_provider_.get();
case kFileSystemTypeIsolated:
case kFileSystemTypeDragged:
case kFileSystemTypeNativeMedia:
case kFileSystemTypeDeviceMedia:
return isolated_provider_.get();
case kFileSystemTypeNativeLocal:
#if defined(OS_CHROMEOS)
return external_provider_.get();
#else
return isolated_provider_.get();
#endif
default:
if (provider_map_.find(type) != provider_map_.end())
return provider_map_.find(type)->second;
// Fall through.
case kFileSystemTypeUnknown:
NOTREACHED();
return NULL;
}
}
const UpdateObserverList* FileSystemContext::GetUpdateObservers(
FileSystemType type) const {
// Currently update observer is only available in SandboxMountPointProvider
// and TestMountPointProvider.
// TODO(kinuko): Probably GetUpdateObservers() virtual method should be
// added to FileSystemMountPointProvider interface and be called like
// other GetFoo() methods do.
if (SandboxMountPointProvider::CanHandleType(type))
return sandbox_provider()->GetUpdateObservers(type);
if (type != kFileSystemTypeTest)
return NULL;
FileSystemMountPointProvider* mount_point_provider =
GetMountPointProvider(type);
return static_cast<TestMountPointProvider*>(
mount_point_provider)->GetUpdateObservers(type);
}
SandboxMountPointProvider*
FileSystemContext::sandbox_provider() const {
return sandbox_provider_.get();
}
ExternalFileSystemMountPointProvider*
FileSystemContext::external_provider() const {
return external_provider_.get();
}
void FileSystemContext::OpenFileSystem(
const GURL& origin_url,
FileSystemType type,
bool create,
const OpenFileSystemCallback& callback) {
DCHECK(!callback.is_null());
FileSystemMountPointProvider* mount_point_provider =
GetMountPointProvider(type);
if (!mount_point_provider) {
callback.Run(base::PLATFORM_FILE_ERROR_SECURITY, std::string(), GURL());
return;
}
GURL root_url = GetFileSystemRootURI(origin_url, type);
std::string name = GetFileSystemName(origin_url, type);
mount_point_provider->ValidateFileSystemRoot(
origin_url, type, create,
base::Bind(&DidOpenFileSystem, callback, root_url, name));
}
void FileSystemContext::OpenSyncableFileSystem(
const std::string& mount_name,
const GURL& origin_url,
FileSystemType type,
bool create,
const OpenFileSystemCallback& callback) {
DCHECK(!callback.is_null());
DCHECK(type == kFileSystemTypeSyncable);
GURL root_url = GetSyncableFileSystemRootURI(origin_url, mount_name);
std::string name = GetFileSystemName(origin_url, kFileSystemTypeSyncable);
FileSystemMountPointProvider* mount_point_provider =
GetMountPointProvider(type);
DCHECK(mount_point_provider);
mount_point_provider->ValidateFileSystemRoot(
origin_url, type, create,
base::Bind(&DidOpenFileSystem, callback, root_url, name));
}
void FileSystemContext::DeleteFileSystem(
const GURL& origin_url,
FileSystemType type,
const DeleteFileSystemCallback& callback) {
DCHECK(origin_url == origin_url.GetOrigin());
FileSystemMountPointProvider* mount_point_provider =
GetMountPointProvider(type);
if (!mount_point_provider) {
callback.Run(base::PLATFORM_FILE_ERROR_SECURITY);
return;
}
mount_point_provider->DeleteFileSystem(origin_url, type, this, callback);
}
FileSystemOperation* FileSystemContext::CreateFileSystemOperation(
const FileSystemURL& url, base::PlatformFileError* error_code) {
if (!url.is_valid()) {
if (error_code)
*error_code = base::PLATFORM_FILE_ERROR_INVALID_URL;
return NULL;
}
FileSystemMountPointProvider* mount_point_provider =
GetMountPointProvider(url.type());
if (!mount_point_provider) {
if (error_code)
*error_code = base::PLATFORM_FILE_ERROR_FAILED;
return NULL;
}
base::PlatformFileError fs_error = base::PLATFORM_FILE_OK;
FileSystemOperation* operation =
mount_point_provider->CreateFileSystemOperation(url, this, &fs_error);
if (error_code)
*error_code = fs_error;
return operation;
}
webkit_blob::FileStreamReader* FileSystemContext::CreateFileStreamReader(
const FileSystemURL& url,
int64 offset,
const base::Time& expected_modification_time) {
if (!url.is_valid())
return NULL;
FileSystemMountPointProvider* mount_point_provider =
GetMountPointProvider(url.type());
if (!mount_point_provider)
return NULL;
return mount_point_provider->CreateFileStreamReader(
url, offset, expected_modification_time, this);
}
void FileSystemContext::RegisterMountPointProvider(
FileSystemType type,
FileSystemMountPointProvider* provider) {
DCHECK(provider);
DCHECK(provider_map_.find(type) == provider_map_.end());
provider_map_[type] = provider;
}
void FileSystemContext::SetLocalFileChangeTracker(
scoped_ptr<LocalFileChangeTracker> tracker) {
DCHECK(!change_tracker_.get());
DCHECK(tracker.get());
change_tracker_ = tracker.Pass();
sandbox_provider_->AddSyncableFileUpdateObserver(
change_tracker_.get(),
task_runners_->file_task_runner());
sandbox_provider_->AddSyncableFileChangeObserver(
change_tracker_.get(),
task_runners_->file_task_runner());
}
void FileSystemContext::set_sync_context(
LocalFileSyncContext* sync_context) {
sync_context_ = sync_context;
}
FileSystemURL FileSystemContext::CrackURL(const GURL& url) const {
return CrackFileSystemURL(FileSystemURL(url));
}
FileSystemURL FileSystemContext::CreateCrackedFileSystemURL(
const GURL& origin,
FileSystemType type,
const base::FilePath& path) const {
return CrackFileSystemURL(FileSystemURL(origin, type, path));
}
FileSystemContext::~FileSystemContext() {
task_runners_->file_task_runner()->DeleteSoon(
FROM_HERE, change_tracker_.release());
}
void FileSystemContext::DeleteOnCorrectThread() const {
if (!task_runners_->io_task_runner()->RunsTasksOnCurrentThread() &&
task_runners_->io_task_runner()->DeleteSoon(FROM_HERE, this)) {
return;
}
STLDeleteContainerPairSecondPointers(provider_map_.begin(),
provider_map_.end());
delete this;
}
FileSystemURL FileSystemContext::CrackFileSystemURL(
const FileSystemURL& url) const {
if (!url.is_valid())
return FileSystemURL();
// The returned value in case there is no crackers which can crack the url.
// This is valid situation for non isolated/external file systems.
FileSystemURL result = url;
for (size_t i = 0; i < url_crackers_.size(); ++i) {
if (!url_crackers_[i]->HandlesFileSystemMountType(url.type()))
continue;
result = url_crackers_[i]->CreateCrackedFileSystemURL(url.origin(),
url.type(),
url.path());
if (result.is_valid())
return result;
}
return result;
}
FileSystemFileUtil* FileSystemContext::GetFileUtil(
FileSystemType type) const {
FileSystemMountPointProvider* mount_point_provider =
GetMountPointProvider(type);
if (!mount_point_provider)
return NULL;
return mount_point_provider->GetFileUtil(type);
}
} // namespace fileapi
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