| // Copyright 2013 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/browser/fileapi/sandbox_file_system_backend_delegate.h" |
| |
| #include <vector> |
| |
| #include "base/command_line.h" |
| #include "base/file_util.h" |
| #include "base/metrics/histogram.h" |
| #include "base/stl_util.h" |
| #include "base/task_runner_util.h" |
| #include "net/base/net_util.h" |
| #include "webkit/browser/blob/file_stream_reader.h" |
| #include "webkit/browser/fileapi/async_file_util_adapter.h" |
| #include "webkit/browser/fileapi/file_system_context.h" |
| #include "webkit/browser/fileapi/file_system_operation_context.h" |
| #include "webkit/browser/fileapi/file_system_url.h" |
| #include "webkit/browser/fileapi/file_system_usage_cache.h" |
| #include "webkit/browser/fileapi/obfuscated_file_util.h" |
| #include "webkit/browser/fileapi/quota/quota_backend_impl.h" |
| #include "webkit/browser/fileapi/quota/quota_reservation.h" |
| #include "webkit/browser/fileapi/quota/quota_reservation_manager.h" |
| #include "webkit/browser/fileapi/sandbox_file_stream_writer.h" |
| #include "webkit/browser/fileapi/sandbox_file_system_backend.h" |
| #include "webkit/browser/fileapi/sandbox_quota_observer.h" |
| #include "webkit/browser/quota/quota_manager.h" |
| #include "webkit/common/fileapi/file_system_util.h" |
| |
| namespace fileapi { |
| |
| namespace { |
| |
| const char kTemporaryOriginsCountLabel[] = "FileSystem.TemporaryOriginsCount"; |
| const char kPersistentOriginsCountLabel[] = "FileSystem.PersistentOriginsCount"; |
| |
| const char kOpenFileSystemLabel[] = "FileSystem.OpenFileSystem"; |
| const char kOpenFileSystemDetailLabel[] = "FileSystem.OpenFileSystemDetail"; |
| const char kOpenFileSystemDetailNonThrottledLabel[] = |
| "FileSystem.OpenFileSystemDetailNonthrottled"; |
| int64 kMinimumStatsCollectionIntervalHours = 1; |
| |
| // For type directory names in ObfuscatedFileUtil. |
| // TODO(kinuko,nhiroki): Each type string registration should be done |
| // via its own backend. |
| const char kTemporaryDirectoryName[] = "t"; |
| const char kPersistentDirectoryName[] = "p"; |
| const char kSyncableDirectoryName[] = "s"; |
| |
| const char* kPrepopulateTypes[] = { |
| kPersistentDirectoryName, |
| kTemporaryDirectoryName |
| }; |
| |
| enum FileSystemError { |
| kOK = 0, |
| kIncognito, |
| kInvalidSchemeError, |
| kCreateDirectoryError, |
| kNotFound, |
| kUnknownError, |
| kFileSystemErrorMax, |
| }; |
| |
| // Restricted names. |
| // http://dev.w3.org/2009/dap/file-system/file-dir-sys.html#naming-restrictions |
| const base::FilePath::CharType* const kRestrictedNames[] = { |
| FILE_PATH_LITERAL("."), FILE_PATH_LITERAL(".."), |
| }; |
| |
| // Restricted chars. |
| const base::FilePath::CharType kRestrictedChars[] = { |
| FILE_PATH_LITERAL('/'), FILE_PATH_LITERAL('\\'), |
| }; |
| |
| std::string GetTypeStringForURL(const FileSystemURL& url) { |
| return SandboxFileSystemBackendDelegate::GetTypeString(url.type()); |
| } |
| |
| std::set<std::string> GetKnownTypeStrings() { |
| std::set<std::string> known_type_strings; |
| known_type_strings.insert(kTemporaryDirectoryName); |
| known_type_strings.insert(kPersistentDirectoryName); |
| known_type_strings.insert(kSyncableDirectoryName); |
| return known_type_strings; |
| } |
| |
| class ObfuscatedOriginEnumerator |
| : public SandboxFileSystemBackendDelegate::OriginEnumerator { |
| public: |
| explicit ObfuscatedOriginEnumerator(ObfuscatedFileUtil* file_util) { |
| enum_.reset(file_util->CreateOriginEnumerator()); |
| } |
| virtual ~ObfuscatedOriginEnumerator() {} |
| |
| virtual GURL Next() OVERRIDE { |
| return enum_->Next(); |
| } |
| |
| virtual bool HasFileSystemType(FileSystemType type) const OVERRIDE { |
| return enum_->HasTypeDirectory( |
| SandboxFileSystemBackendDelegate::GetTypeString(type)); |
| } |
| |
| private: |
| scoped_ptr<ObfuscatedFileUtil::AbstractOriginEnumerator> enum_; |
| }; |
| |
| void OpenFileSystemOnFileThread( |
| ObfuscatedFileUtil* file_util, |
| const GURL& origin_url, |
| FileSystemType type, |
| OpenFileSystemMode mode, |
| base::PlatformFileError* error_ptr) { |
| DCHECK(error_ptr); |
| const bool create = (mode == OPEN_FILE_SYSTEM_CREATE_IF_NONEXISTENT); |
| file_util->GetDirectoryForOriginAndType( |
| origin_url, SandboxFileSystemBackendDelegate::GetTypeString(type), |
| create, error_ptr); |
| if (*error_ptr != base::PLATFORM_FILE_OK) { |
| UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemLabel, |
| kCreateDirectoryError, |
| kFileSystemErrorMax); |
| } else { |
| UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemLabel, kOK, kFileSystemErrorMax); |
| } |
| // The reference of file_util will be derefed on the FILE thread |
| // when the storage of this callback gets deleted regardless of whether |
| // this method is called or not. |
| } |
| |
| void DidOpenFileSystem( |
| base::WeakPtr<SandboxFileSystemBackendDelegate> delegate, |
| const base::Callback<void(base::PlatformFileError error)>& callback, |
| base::PlatformFileError* error) { |
| if (delegate.get()) |
| delegate.get()->CollectOpenFileSystemMetrics(*error); |
| callback.Run(*error); |
| } |
| |
| template <typename T> |
| void DeleteSoon(base::SequencedTaskRunner* runner, T* ptr) { |
| if (!runner->DeleteSoon(FROM_HERE, ptr)) |
| delete ptr; |
| } |
| |
| } // namespace |
| |
| const base::FilePath::CharType |
| SandboxFileSystemBackendDelegate::kFileSystemDirectory[] = |
| FILE_PATH_LITERAL("File System"); |
| |
| // static |
| std::string SandboxFileSystemBackendDelegate::GetTypeString( |
| FileSystemType type) { |
| switch (type) { |
| case kFileSystemTypeTemporary: |
| return kTemporaryDirectoryName; |
| case kFileSystemTypePersistent: |
| return kPersistentDirectoryName; |
| case kFileSystemTypeSyncable: |
| case kFileSystemTypeSyncableForInternalSync: |
| return kSyncableDirectoryName; |
| case kFileSystemTypeUnknown: |
| default: |
| NOTREACHED() << "Unknown filesystem type requested:" << type; |
| return std::string(); |
| } |
| } |
| |
| SandboxFileSystemBackendDelegate::SandboxFileSystemBackendDelegate( |
| quota::QuotaManagerProxy* quota_manager_proxy, |
| base::SequencedTaskRunner* file_task_runner, |
| const base::FilePath& profile_path, |
| quota::SpecialStoragePolicy* special_storage_policy, |
| const FileSystemOptions& file_system_options) |
| : file_task_runner_(file_task_runner), |
| sandbox_file_util_(new AsyncFileUtilAdapter( |
| new ObfuscatedFileUtil( |
| special_storage_policy, |
| profile_path.Append(kFileSystemDirectory), |
| file_task_runner, |
| base::Bind(&GetTypeStringForURL), |
| GetKnownTypeStrings(), |
| this))), |
| file_system_usage_cache_(new FileSystemUsageCache(file_task_runner)), |
| quota_observer_(new SandboxQuotaObserver( |
| quota_manager_proxy, |
| file_task_runner, |
| obfuscated_file_util(), |
| usage_cache())), |
| quota_reservation_manager_(new QuotaReservationManager( |
| scoped_ptr<QuotaReservationManager::QuotaBackend>( |
| new QuotaBackendImpl(file_task_runner_, |
| obfuscated_file_util(), |
| usage_cache(), |
| quota_manager_proxy)))), |
| special_storage_policy_(special_storage_policy), |
| file_system_options_(file_system_options), |
| is_filesystem_opened_(false), |
| weak_factory_(this) { |
| // Prepopulate database only if it can run asynchronously (i.e. the current |
| // thread is not file_task_runner). Usually this is the case but may not |
| // in test code. |
| if (!file_task_runner_->RunsTasksOnCurrentThread()) { |
| std::vector<std::string> types_to_prepopulate( |
| &kPrepopulateTypes[0], |
| &kPrepopulateTypes[arraysize(kPrepopulateTypes)]); |
| file_task_runner_->PostTask( |
| FROM_HERE, |
| base::Bind(&ObfuscatedFileUtil::MaybePrepopulateDatabase, |
| base::Unretained(obfuscated_file_util()), |
| types_to_prepopulate)); |
| } |
| } |
| |
| SandboxFileSystemBackendDelegate::~SandboxFileSystemBackendDelegate() { |
| io_thread_checker_.DetachFromThread(); |
| |
| if (!file_task_runner_->RunsTasksOnCurrentThread()) { |
| DeleteSoon(file_task_runner_.get(), quota_reservation_manager_.release()); |
| DeleteSoon(file_task_runner_.get(), sandbox_file_util_.release()); |
| DeleteSoon(file_task_runner_.get(), quota_observer_.release()); |
| DeleteSoon(file_task_runner_.get(), file_system_usage_cache_.release()); |
| } |
| } |
| |
| SandboxFileSystemBackendDelegate::OriginEnumerator* |
| SandboxFileSystemBackendDelegate::CreateOriginEnumerator() { |
| return new ObfuscatedOriginEnumerator(obfuscated_file_util()); |
| } |
| |
| base::FilePath |
| SandboxFileSystemBackendDelegate::GetBaseDirectoryForOriginAndType( |
| const GURL& origin_url, |
| FileSystemType type, |
| bool create) { |
| base::PlatformFileError error = base::PLATFORM_FILE_OK; |
| base::FilePath path = obfuscated_file_util()->GetDirectoryForOriginAndType( |
| origin_url, GetTypeString(type), create, &error); |
| if (error != base::PLATFORM_FILE_OK) |
| return base::FilePath(); |
| return path; |
| } |
| |
| void SandboxFileSystemBackendDelegate::OpenFileSystem( |
| const GURL& origin_url, |
| FileSystemType type, |
| OpenFileSystemMode mode, |
| const OpenFileSystemCallback& callback, |
| const GURL& root_url) { |
| if (!IsAllowedScheme(origin_url)) { |
| callback.Run(GURL(), std::string(), base::PLATFORM_FILE_ERROR_SECURITY); |
| return; |
| } |
| |
| std::string name = GetFileSystemName(origin_url, type); |
| |
| base::PlatformFileError* error_ptr = new base::PlatformFileError; |
| file_task_runner_->PostTaskAndReply( |
| FROM_HERE, |
| base::Bind(&OpenFileSystemOnFileThread, |
| obfuscated_file_util(), origin_url, type, mode, |
| base::Unretained(error_ptr)), |
| base::Bind(&DidOpenFileSystem, |
| weak_factory_.GetWeakPtr(), |
| base::Bind(callback, root_url, name), |
| base::Owned(error_ptr))); |
| |
| io_thread_checker_.DetachFromThread(); |
| is_filesystem_opened_ = true; |
| } |
| |
| scoped_ptr<FileSystemOperationContext> |
| SandboxFileSystemBackendDelegate::CreateFileSystemOperationContext( |
| const FileSystemURL& url, |
| FileSystemContext* context, |
| base::PlatformFileError* error_code) const { |
| if (!IsAccessValid(url)) { |
| *error_code = base::PLATFORM_FILE_ERROR_SECURITY; |
| return scoped_ptr<FileSystemOperationContext>(); |
| } |
| |
| const UpdateObserverList* update_observers = GetUpdateObservers(url.type()); |
| const ChangeObserverList* change_observers = GetChangeObservers(url.type()); |
| DCHECK(update_observers); |
| |
| scoped_ptr<FileSystemOperationContext> operation_context( |
| new FileSystemOperationContext(context)); |
| operation_context->set_update_observers(*update_observers); |
| operation_context->set_change_observers( |
| change_observers ? *change_observers : ChangeObserverList()); |
| |
| return operation_context.Pass(); |
| } |
| |
| scoped_ptr<webkit_blob::FileStreamReader> |
| SandboxFileSystemBackendDelegate::CreateFileStreamReader( |
| const FileSystemURL& url, |
| int64 offset, |
| const base::Time& expected_modification_time, |
| FileSystemContext* context) const { |
| if (!IsAccessValid(url)) |
| return scoped_ptr<webkit_blob::FileStreamReader>(); |
| return scoped_ptr<webkit_blob::FileStreamReader>( |
| webkit_blob::FileStreamReader::CreateForFileSystemFile( |
| context, url, offset, expected_modification_time)); |
| } |
| |
| scoped_ptr<FileStreamWriter> |
| SandboxFileSystemBackendDelegate::CreateFileStreamWriter( |
| const FileSystemURL& url, |
| int64 offset, |
| FileSystemContext* context, |
| FileSystemType type) const { |
| if (!IsAccessValid(url)) |
| return scoped_ptr<FileStreamWriter>(); |
| const UpdateObserverList* observers = GetUpdateObservers(type); |
| DCHECK(observers); |
| return scoped_ptr<FileStreamWriter>( |
| new SandboxFileStreamWriter(context, url, offset, *observers)); |
| } |
| |
| base::PlatformFileError |
| SandboxFileSystemBackendDelegate::DeleteOriginDataOnFileThread( |
| FileSystemContext* file_system_context, |
| quota::QuotaManagerProxy* proxy, |
| const GURL& origin_url, |
| FileSystemType type) { |
| int64 usage = GetOriginUsageOnFileThread( |
| file_system_context, origin_url, type); |
| usage_cache()->CloseCacheFiles(); |
| bool result = obfuscated_file_util()->DeleteDirectoryForOriginAndType( |
| origin_url, GetTypeString(type)); |
| if (result && proxy) { |
| proxy->NotifyStorageModified( |
| quota::QuotaClient::kFileSystem, |
| origin_url, |
| FileSystemTypeToQuotaStorageType(type), |
| -usage); |
| } |
| |
| if (result) |
| return base::PLATFORM_FILE_OK; |
| return base::PLATFORM_FILE_ERROR_FAILED; |
| } |
| |
| void SandboxFileSystemBackendDelegate::GetOriginsForTypeOnFileThread( |
| FileSystemType type, std::set<GURL>* origins) { |
| DCHECK(origins); |
| scoped_ptr<OriginEnumerator> enumerator(CreateOriginEnumerator()); |
| GURL origin; |
| while (!(origin = enumerator->Next()).is_empty()) { |
| if (enumerator->HasFileSystemType(type)) |
| origins->insert(origin); |
| } |
| switch (type) { |
| case kFileSystemTypeTemporary: |
| UMA_HISTOGRAM_COUNTS(kTemporaryOriginsCountLabel, origins->size()); |
| break; |
| case kFileSystemTypePersistent: |
| UMA_HISTOGRAM_COUNTS(kPersistentOriginsCountLabel, origins->size()); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| void SandboxFileSystemBackendDelegate::GetOriginsForHostOnFileThread( |
| FileSystemType type, const std::string& host, |
| std::set<GURL>* origins) { |
| DCHECK(origins); |
| scoped_ptr<OriginEnumerator> enumerator(CreateOriginEnumerator()); |
| GURL origin; |
| while (!(origin = enumerator->Next()).is_empty()) { |
| if (host == net::GetHostOrSpecFromURL(origin) && |
| enumerator->HasFileSystemType(type)) |
| origins->insert(origin); |
| } |
| } |
| |
| int64 SandboxFileSystemBackendDelegate::GetOriginUsageOnFileThread( |
| FileSystemContext* file_system_context, |
| const GURL& origin_url, |
| FileSystemType type) { |
| // Don't use usage cache and return recalculated usage for sticky invalidated |
| // origins. |
| if (ContainsKey(sticky_dirty_origins_, std::make_pair(origin_url, type))) |
| return RecalculateUsage(file_system_context, origin_url, type); |
| |
| base::FilePath base_path = |
| GetBaseDirectoryForOriginAndType(origin_url, type, false); |
| if (base_path.empty() || !base::DirectoryExists(base_path)) |
| return 0; |
| base::FilePath usage_file_path = |
| base_path.Append(FileSystemUsageCache::kUsageFileName); |
| |
| bool is_valid = usage_cache()->IsValid(usage_file_path); |
| uint32 dirty_status = 0; |
| bool dirty_status_available = |
| usage_cache()->GetDirty(usage_file_path, &dirty_status); |
| bool visited = !visited_origins_.insert(origin_url).second; |
| if (is_valid && (dirty_status == 0 || (dirty_status_available && visited))) { |
| // The usage cache is clean (dirty == 0) or the origin is already |
| // initialized and running. Read the cache file to get the usage. |
| int64 usage = 0; |
| return usage_cache()->GetUsage(usage_file_path, &usage) ? usage : -1; |
| } |
| // The usage cache has not been initialized or the cache is dirty. |
| // Get the directory size now and update the cache. |
| usage_cache()->Delete(usage_file_path); |
| |
| int64 usage = RecalculateUsage(file_system_context, origin_url, type); |
| |
| // This clears the dirty flag too. |
| usage_cache()->UpdateUsage(usage_file_path, usage); |
| return usage; |
| } |
| |
| scoped_refptr<QuotaReservation> |
| SandboxFileSystemBackendDelegate::CreateQuotaReservationOnFileTaskRunner( |
| const GURL& origin, |
| FileSystemType type) { |
| DCHECK(file_task_runner_->RunsTasksOnCurrentThread()); |
| DCHECK(quota_reservation_manager_); |
| return quota_reservation_manager_->CreateReservation(origin, type); |
| } |
| |
| void SandboxFileSystemBackendDelegate::AddFileUpdateObserver( |
| FileSystemType type, |
| FileUpdateObserver* observer, |
| base::SequencedTaskRunner* task_runner) { |
| DCHECK(!is_filesystem_opened_ || io_thread_checker_.CalledOnValidThread()); |
| update_observers_[type] = |
| update_observers_[type].AddObserver(observer, task_runner); |
| } |
| |
| void SandboxFileSystemBackendDelegate::AddFileChangeObserver( |
| FileSystemType type, |
| FileChangeObserver* observer, |
| base::SequencedTaskRunner* task_runner) { |
| DCHECK(!is_filesystem_opened_ || io_thread_checker_.CalledOnValidThread()); |
| change_observers_[type] = |
| change_observers_[type].AddObserver(observer, task_runner); |
| } |
| |
| void SandboxFileSystemBackendDelegate::AddFileAccessObserver( |
| FileSystemType type, |
| FileAccessObserver* observer, |
| base::SequencedTaskRunner* task_runner) { |
| DCHECK(!is_filesystem_opened_ || io_thread_checker_.CalledOnValidThread()); |
| access_observers_[type] = |
| access_observers_[type].AddObserver(observer, task_runner); |
| } |
| |
| const UpdateObserverList* SandboxFileSystemBackendDelegate::GetUpdateObservers( |
| FileSystemType type) const { |
| std::map<FileSystemType, UpdateObserverList>::const_iterator iter = |
| update_observers_.find(type); |
| if (iter == update_observers_.end()) |
| return NULL; |
| return &iter->second; |
| } |
| |
| const ChangeObserverList* SandboxFileSystemBackendDelegate::GetChangeObservers( |
| FileSystemType type) const { |
| std::map<FileSystemType, ChangeObserverList>::const_iterator iter = |
| change_observers_.find(type); |
| if (iter == change_observers_.end()) |
| return NULL; |
| return &iter->second; |
| } |
| |
| const AccessObserverList* SandboxFileSystemBackendDelegate::GetAccessObservers( |
| FileSystemType type) const { |
| std::map<FileSystemType, AccessObserverList>::const_iterator iter = |
| access_observers_.find(type); |
| if (iter == access_observers_.end()) |
| return NULL; |
| return &iter->second; |
| } |
| |
| void SandboxFileSystemBackendDelegate::RegisterQuotaUpdateObserver( |
| FileSystemType type) { |
| AddFileUpdateObserver(type, quota_observer_.get(), file_task_runner_.get()); |
| } |
| |
| void SandboxFileSystemBackendDelegate::InvalidateUsageCache( |
| const GURL& origin, |
| FileSystemType type) { |
| base::PlatformFileError error = base::PLATFORM_FILE_OK; |
| base::FilePath usage_file_path = GetUsageCachePathForOriginAndType( |
| obfuscated_file_util(), origin, type, &error); |
| if (error != base::PLATFORM_FILE_OK) |
| return; |
| usage_cache()->IncrementDirty(usage_file_path); |
| } |
| |
| void SandboxFileSystemBackendDelegate::StickyInvalidateUsageCache( |
| const GURL& origin, |
| FileSystemType type) { |
| sticky_dirty_origins_.insert(std::make_pair(origin, type)); |
| quota_observer()->SetUsageCacheEnabled(origin, type, false); |
| InvalidateUsageCache(origin, type); |
| } |
| |
| FileSystemFileUtil* SandboxFileSystemBackendDelegate::sync_file_util() { |
| return static_cast<AsyncFileUtilAdapter*>(file_util())->sync_file_util(); |
| } |
| |
| bool SandboxFileSystemBackendDelegate::IsAccessValid( |
| const FileSystemURL& url) const { |
| if (!IsAllowedScheme(url.origin())) |
| return false; |
| |
| if (url.path().ReferencesParent()) |
| return false; |
| |
| // Return earlier if the path is '/', because VirtualPath::BaseName() |
| // returns '/' for '/' and we fail the "basename != '/'" check below. |
| // (We exclude '.' because it's disallowed by spec.) |
| if (VirtualPath::IsRootPath(url.path()) && |
| url.path() != base::FilePath(base::FilePath::kCurrentDirectory)) |
| return true; |
| |
| // Restricted names specified in |
| // http://dev.w3.org/2009/dap/file-system/file-dir-sys.html#naming-restrictions |
| base::FilePath filename = VirtualPath::BaseName(url.path()); |
| // See if the name is allowed to create. |
| for (size_t i = 0; i < arraysize(kRestrictedNames); ++i) { |
| if (filename.value() == kRestrictedNames[i]) |
| return false; |
| } |
| for (size_t i = 0; i < arraysize(kRestrictedChars); ++i) { |
| if (filename.value().find(kRestrictedChars[i]) != |
| base::FilePath::StringType::npos) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool SandboxFileSystemBackendDelegate::IsAllowedScheme(const GURL& url) const { |
| // Basically we only accept http or https. We allow file:// URLs |
| // only if --allow-file-access-from-files flag is given. |
| if (url.SchemeIsHTTPOrHTTPS()) |
| return true; |
| if (url.SchemeIsFileSystem()) |
| return url.inner_url() && IsAllowedScheme(*url.inner_url()); |
| |
| for (size_t i = 0; |
| i < file_system_options_.additional_allowed_schemes().size(); |
| ++i) { |
| if (url.SchemeIs( |
| file_system_options_.additional_allowed_schemes()[i].c_str())) |
| return true; |
| } |
| return false; |
| } |
| |
| base::FilePath |
| SandboxFileSystemBackendDelegate::GetUsageCachePathForOriginAndType( |
| const GURL& origin_url, |
| FileSystemType type) { |
| base::PlatformFileError error; |
| base::FilePath path = GetUsageCachePathForOriginAndType( |
| obfuscated_file_util(), origin_url, type, &error); |
| if (error != base::PLATFORM_FILE_OK) |
| return base::FilePath(); |
| return path; |
| } |
| |
| // static |
| base::FilePath |
| SandboxFileSystemBackendDelegate::GetUsageCachePathForOriginAndType( |
| ObfuscatedFileUtil* sandbox_file_util, |
| const GURL& origin_url, |
| FileSystemType type, |
| base::PlatformFileError* error_out) { |
| DCHECK(error_out); |
| *error_out = base::PLATFORM_FILE_OK; |
| base::FilePath base_path = sandbox_file_util->GetDirectoryForOriginAndType( |
| origin_url, GetTypeString(type), false /* create */, error_out); |
| if (*error_out != base::PLATFORM_FILE_OK) |
| return base::FilePath(); |
| return base_path.Append(FileSystemUsageCache::kUsageFileName); |
| } |
| |
| int64 SandboxFileSystemBackendDelegate::RecalculateUsage( |
| FileSystemContext* context, |
| const GURL& origin, |
| FileSystemType type) { |
| FileSystemOperationContext operation_context(context); |
| FileSystemURL url = context->CreateCrackedFileSystemURL( |
| origin, type, base::FilePath()); |
| scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator> enumerator( |
| obfuscated_file_util()->CreateFileEnumerator( |
| &operation_context, url, true)); |
| |
| base::FilePath file_path_each; |
| int64 usage = 0; |
| |
| while (!(file_path_each = enumerator->Next()).empty()) { |
| usage += enumerator->Size(); |
| usage += ObfuscatedFileUtil::ComputeFilePathCost(file_path_each); |
| } |
| |
| return usage; |
| } |
| |
| void SandboxFileSystemBackendDelegate::CollectOpenFileSystemMetrics( |
| base::PlatformFileError error_code) { |
| base::Time now = base::Time::Now(); |
| bool throttled = now < next_release_time_for_open_filesystem_stat_; |
| if (!throttled) { |
| next_release_time_for_open_filesystem_stat_ = |
| now + base::TimeDelta::FromHours(kMinimumStatsCollectionIntervalHours); |
| } |
| |
| #define REPORT(report_value) \ |
| UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemDetailLabel, \ |
| (report_value), \ |
| kFileSystemErrorMax); \ |
| if (!throttled) { \ |
| UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemDetailNonThrottledLabel, \ |
| (report_value), \ |
| kFileSystemErrorMax); \ |
| } |
| |
| switch (error_code) { |
| case base::PLATFORM_FILE_OK: |
| REPORT(kOK); |
| break; |
| case base::PLATFORM_FILE_ERROR_INVALID_URL: |
| REPORT(kInvalidSchemeError); |
| break; |
| case base::PLATFORM_FILE_ERROR_NOT_FOUND: |
| REPORT(kNotFound); |
| break; |
| case base::PLATFORM_FILE_ERROR_FAILED: |
| default: |
| REPORT(kUnknownError); |
| break; |
| } |
| #undef REPORT |
| } |
| |
| ObfuscatedFileUtil* SandboxFileSystemBackendDelegate::obfuscated_file_util() { |
| return static_cast<ObfuscatedFileUtil*>(sync_file_util()); |
| } |
| |
| // Declared in obfuscated_file_util.h. |
| // static |
| ObfuscatedFileUtil* ObfuscatedFileUtil::CreateForTesting( |
| quota::SpecialStoragePolicy* special_storage_policy, |
| const base::FilePath& file_system_directory, |
| base::SequencedTaskRunner* file_task_runner) { |
| return new ObfuscatedFileUtil(special_storage_policy, |
| file_system_directory, |
| file_task_runner, |
| base::Bind(&GetTypeStringForURL), |
| GetKnownTypeStrings(), |
| NULL); |
| } |
| |
| } // namespace fileapi |