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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "webkit/browser/fileapi/sandbox_mount_point_provider.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/command_line.h" | |
| 9 #include "base/file_util.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "base/memory/scoped_ptr.h" | |
| 12 #include "base/metrics/histogram.h" | |
| 13 #include "base/stl_util.h" | |
| 14 #include "base/task_runner_util.h" | |
| 15 #include "net/base/net_util.h" | |
| 16 #include "url/gurl.h" | |
| 17 #include "webkit/browser/fileapi/async_file_util_adapter.h" | |
| 18 #include "webkit/browser/fileapi/copy_or_move_file_validator.h" | |
| 19 #include "webkit/browser/fileapi/file_system_context.h" | |
| 20 #include "webkit/browser/fileapi/file_system_file_stream_reader.h" | |
| 21 #include "webkit/browser/fileapi/file_system_operation_context.h" | |
| 22 #include "webkit/browser/fileapi/file_system_options.h" | |
| 23 #include "webkit/browser/fileapi/file_system_task_runners.h" | |
| 24 #include "webkit/browser/fileapi/file_system_usage_cache.h" | |
| 25 #include "webkit/browser/fileapi/local_file_system_operation.h" | |
| 26 #include "webkit/browser/fileapi/obfuscated_file_util.h" | |
| 27 #include "webkit/browser/fileapi/sandbox_file_stream_writer.h" | |
| 28 #include "webkit/browser/fileapi/sandbox_quota_observer.h" | |
| 29 #include "webkit/browser/fileapi/syncable/syncable_file_system_operation.h" | |
| 30 #include "webkit/browser/quota/quota_manager.h" | |
| 31 #include "webkit/common/fileapi/file_system_types.h" | |
| 32 #include "webkit/common/fileapi/file_system_util.h" | |
| 33 | |
| 34 using quota::QuotaManagerProxy; | |
| 35 | |
| 36 namespace fileapi { | |
| 37 | |
| 38 namespace { | |
| 39 | |
| 40 const char kChromeScheme[] = "chrome"; | |
| 41 const char kExtensionScheme[] = "chrome-extension"; | |
| 42 | |
| 43 const char kOpenFileSystemLabel[] = "FileSystem.OpenFileSystem"; | |
| 44 const char kOpenFileSystemDetailLabel[] = "FileSystem.OpenFileSystemDetail"; | |
| 45 const char kOpenFileSystemDetailNonThrottledLabel[] = | |
| 46 "FileSystem.OpenFileSystemDetailNonthrottled"; | |
| 47 int64 kMinimumStatsCollectionIntervalHours = 1; | |
| 48 | |
| 49 // A command line switch to disable usage tracking. | |
| 50 const char kDisableUsageTracking[] = "disable-file-system-usage-tracking"; | |
| 51 | |
| 52 enum FileSystemError { | |
| 53 kOK = 0, | |
| 54 kIncognito, | |
| 55 kInvalidSchemeError, | |
| 56 kCreateDirectoryError, | |
| 57 kNotFound, | |
| 58 kUnknownError, | |
| 59 kFileSystemErrorMax, | |
| 60 }; | |
| 61 | |
| 62 const char kTemporaryOriginsCountLabel[] = "FileSystem.TemporaryOriginsCount"; | |
| 63 const char kPersistentOriginsCountLabel[] = "FileSystem.PersistentOriginsCount"; | |
| 64 const char kSyncableOriginsCountLabel[] = "FileSystem.SyncableOriginsCount"; | |
| 65 | |
| 66 // Restricted names. | |
| 67 // http://dev.w3.org/2009/dap/file-system/file-dir-sys.html#naming-restrictions | |
| 68 const base::FilePath::CharType* const kRestrictedNames[] = { | |
| 69 FILE_PATH_LITERAL("."), FILE_PATH_LITERAL(".."), | |
| 70 }; | |
| 71 | |
| 72 // Restricted chars. | |
| 73 const base::FilePath::CharType kRestrictedChars[] = { | |
| 74 FILE_PATH_LITERAL('/'), FILE_PATH_LITERAL('\\'), | |
| 75 }; | |
| 76 | |
| 77 class ObfuscatedOriginEnumerator | |
| 78 : public SandboxMountPointProvider::OriginEnumerator { | |
| 79 public: | |
| 80 explicit ObfuscatedOriginEnumerator(ObfuscatedFileUtil* file_util) { | |
| 81 enum_.reset(file_util->CreateOriginEnumerator()); | |
| 82 } | |
| 83 virtual ~ObfuscatedOriginEnumerator() {} | |
| 84 | |
| 85 virtual GURL Next() OVERRIDE { | |
| 86 return enum_->Next(); | |
| 87 } | |
| 88 | |
| 89 virtual bool HasFileSystemType(fileapi::FileSystemType type) const OVERRIDE { | |
| 90 return enum_->HasFileSystemType(type); | |
| 91 } | |
| 92 | |
| 93 private: | |
| 94 scoped_ptr<ObfuscatedFileUtil::AbstractOriginEnumerator> enum_; | |
| 95 }; | |
| 96 | |
| 97 void DidOpenFileSystem( | |
| 98 base::WeakPtr<SandboxMountPointProvider> mount_point_provider, | |
| 99 const FileSystemMountPointProvider::OpenFileSystemCallback& callback, | |
| 100 base::PlatformFileError* error) { | |
| 101 if (mount_point_provider.get()) | |
| 102 mount_point_provider.get()->CollectOpenFileSystemMetrics(*error); | |
| 103 callback.Run(*error); | |
| 104 } | |
| 105 | |
| 106 void OpenFileSystemOnFileThread( | |
| 107 ObfuscatedFileUtil* file_util, | |
| 108 const GURL& origin_url, | |
| 109 FileSystemType type, | |
| 110 OpenFileSystemMode mode, | |
| 111 base::PlatformFileError* error_ptr) { | |
| 112 DCHECK(error_ptr); | |
| 113 | |
| 114 const bool create = (mode == OPEN_FILE_SYSTEM_CREATE_IF_NONEXISTENT); | |
| 115 base::FilePath root_path = | |
| 116 file_util->GetDirectoryForOriginAndType( | |
| 117 origin_url, type, create, error_ptr); | |
| 118 if (*error_ptr != base::PLATFORM_FILE_OK) { | |
| 119 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemLabel, | |
| 120 kCreateDirectoryError, | |
| 121 kFileSystemErrorMax); | |
| 122 } else { | |
| 123 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemLabel, kOK, kFileSystemErrorMax); | |
| 124 } | |
| 125 // The reference of file_util will be derefed on the FILE thread | |
| 126 // when the storage of this callback gets deleted regardless of whether | |
| 127 // this method is called or not. | |
| 128 } | |
| 129 | |
| 130 } // anonymous namespace | |
| 131 | |
| 132 const base::FilePath::CharType | |
| 133 SandboxMountPointProvider::kFileSystemDirectory[] = | |
| 134 FILE_PATH_LITERAL("File System"); | |
| 135 | |
| 136 SandboxMountPointProvider::SandboxMountPointProvider( | |
| 137 quota::QuotaManagerProxy* quota_manager_proxy, | |
| 138 base::SequencedTaskRunner* file_task_runner, | |
| 139 const base::FilePath& profile_path, | |
| 140 const FileSystemOptions& file_system_options, | |
| 141 quota::SpecialStoragePolicy* special_storage_policy) | |
| 142 : file_task_runner_(file_task_runner), | |
| 143 profile_path_(profile_path), | |
| 144 file_system_options_(file_system_options), | |
| 145 enable_temporary_file_system_in_incognito_(false), | |
| 146 sandbox_file_util_( | |
| 147 new AsyncFileUtilAdapter( | |
| 148 new ObfuscatedFileUtil( | |
| 149 special_storage_policy, | |
| 150 profile_path.Append(kFileSystemDirectory), | |
| 151 file_task_runner))), | |
| 152 file_system_usage_cache_(new FileSystemUsageCache(file_task_runner)), | |
| 153 quota_observer_(new SandboxQuotaObserver( | |
| 154 quota_manager_proxy, | |
| 155 file_task_runner, | |
| 156 sandbox_sync_file_util(), | |
| 157 file_system_usage_cache_.get())), | |
| 158 enable_usage_tracking_( | |
| 159 !CommandLine::ForCurrentProcess()->HasSwitch( | |
| 160 kDisableUsageTracking)), | |
| 161 special_storage_policy_(special_storage_policy), | |
| 162 weak_factory_(this) { | |
| 163 // Set quota observers. | |
| 164 UpdateObserverList::Source update_observers_src; | |
| 165 AccessObserverList::Source access_observers_src; | |
| 166 | |
| 167 if (enable_usage_tracking_) { | |
| 168 update_observers_src.AddObserver(quota_observer_.get(), | |
| 169 file_task_runner_.get()); | |
| 170 access_observers_src.AddObserver(quota_observer_.get(), NULL); | |
| 171 } | |
| 172 | |
| 173 update_observers_ = UpdateObserverList(update_observers_src); | |
| 174 access_observers_ = AccessObserverList(access_observers_src); | |
| 175 syncable_update_observers_ = UpdateObserverList(update_observers_src); | |
| 176 | |
| 177 if (!file_task_runner_->RunsTasksOnCurrentThread()) { | |
| 178 // Post prepopulate task only if it's not already running on | |
| 179 // file_task_runner (which implies running in tests). | |
| 180 file_task_runner_->PostTask( | |
| 181 FROM_HERE, | |
| 182 base::Bind(&ObfuscatedFileUtil::MaybePrepopulateDatabase, | |
| 183 base::Unretained(sandbox_sync_file_util()))); | |
| 184 } | |
| 185 } | |
| 186 | |
| 187 SandboxMountPointProvider::~SandboxMountPointProvider() { | |
| 188 if (!file_task_runner_->RunsTasksOnCurrentThread()) { | |
| 189 AsyncFileUtilAdapter* sandbox_file_util = sandbox_file_util_.release(); | |
| 190 SandboxQuotaObserver* quota_observer = quota_observer_.release(); | |
| 191 FileSystemUsageCache* file_system_usage_cache = | |
| 192 file_system_usage_cache_.release(); | |
| 193 if (!file_task_runner_->DeleteSoon(FROM_HERE, sandbox_file_util)) | |
| 194 delete sandbox_file_util; | |
| 195 if (!file_task_runner_->DeleteSoon(FROM_HERE, quota_observer)) | |
| 196 delete quota_observer; | |
| 197 if (!file_task_runner_->DeleteSoon(FROM_HERE, file_system_usage_cache)) | |
| 198 delete file_system_usage_cache; | |
| 199 } | |
| 200 } | |
| 201 | |
| 202 bool SandboxMountPointProvider::CanHandleType(FileSystemType type) const { | |
| 203 return type == kFileSystemTypeTemporary || | |
| 204 type == kFileSystemTypePersistent || | |
| 205 type == kFileSystemTypeSyncable || | |
| 206 type == kFileSystemTypeSyncableForInternalSync; | |
| 207 } | |
| 208 | |
| 209 void SandboxMountPointProvider::OpenFileSystem( | |
| 210 const GURL& origin_url, fileapi::FileSystemType type, | |
| 211 OpenFileSystemMode mode, | |
| 212 const OpenFileSystemCallback& callback) { | |
| 213 if (file_system_options_.is_incognito() && | |
| 214 !(type == kFileSystemTypeTemporary && | |
| 215 enable_temporary_file_system_in_incognito_)) { | |
| 216 // TODO(kinuko): return an isolated temporary directory. | |
| 217 callback.Run(base::PLATFORM_FILE_ERROR_SECURITY); | |
| 218 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemLabel, | |
| 219 kIncognito, | |
| 220 kFileSystemErrorMax); | |
| 221 return; | |
| 222 } | |
| 223 | |
| 224 if (!IsAllowedScheme(origin_url)) { | |
| 225 callback.Run(base::PLATFORM_FILE_ERROR_SECURITY); | |
| 226 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemLabel, | |
| 227 kInvalidSchemeError, | |
| 228 kFileSystemErrorMax); | |
| 229 return; | |
| 230 } | |
| 231 | |
| 232 base::PlatformFileError* error_ptr = new base::PlatformFileError; | |
| 233 file_task_runner_->PostTaskAndReply( | |
| 234 FROM_HERE, | |
| 235 base::Bind(&OpenFileSystemOnFileThread, | |
| 236 sandbox_sync_file_util(), | |
| 237 origin_url, type, mode, | |
| 238 base::Unretained(error_ptr)), | |
| 239 base::Bind(&DidOpenFileSystem, | |
| 240 weak_factory_.GetWeakPtr(), | |
| 241 callback, base::Owned(error_ptr))); | |
| 242 | |
| 243 if (enable_usage_tracking_) | |
| 244 return; | |
| 245 | |
| 246 // Schedule full usage recalculation on the next launch without | |
| 247 // --disable-file-system-usage-tracking. | |
| 248 file_task_runner_->PostTask( | |
| 249 FROM_HERE, | |
| 250 base::Bind(&SandboxMountPointProvider::InvalidateUsageCacheOnFileThread, | |
| 251 sandbox_sync_file_util(), origin_url, type, | |
| 252 file_system_usage_cache_.get())); | |
| 253 }; | |
| 254 | |
| 255 FileSystemFileUtil* SandboxMountPointProvider::GetFileUtil( | |
| 256 FileSystemType type) { | |
| 257 DCHECK(sandbox_file_util_.get()); | |
| 258 return sandbox_file_util_->sync_file_util(); | |
| 259 } | |
| 260 | |
| 261 AsyncFileUtil* SandboxMountPointProvider::GetAsyncFileUtil( | |
| 262 FileSystemType type) { | |
| 263 return sandbox_file_util_.get(); | |
| 264 } | |
| 265 | |
| 266 CopyOrMoveFileValidatorFactory* | |
| 267 SandboxMountPointProvider::GetCopyOrMoveFileValidatorFactory( | |
| 268 FileSystemType type, | |
| 269 base::PlatformFileError* error_code) { | |
| 270 DCHECK(error_code); | |
| 271 *error_code = base::PLATFORM_FILE_OK; | |
| 272 return NULL; | |
| 273 } | |
| 274 | |
| 275 FileSystemOperation* SandboxMountPointProvider::CreateFileSystemOperation( | |
| 276 const FileSystemURL& url, | |
| 277 FileSystemContext* context, | |
| 278 base::PlatformFileError* error_code) const { | |
| 279 if (!IsAccessValid(url)) { | |
| 280 *error_code = base::PLATFORM_FILE_ERROR_SECURITY; | |
| 281 return NULL; | |
| 282 } | |
| 283 | |
| 284 scoped_ptr<FileSystemOperationContext> operation_context( | |
| 285 new FileSystemOperationContext(context)); | |
| 286 | |
| 287 // Copy the observer lists (assuming we only have small number of observers). | |
| 288 if (url.type() == kFileSystemTypeSyncable) { | |
| 289 operation_context->set_update_observers(syncable_update_observers_); | |
| 290 operation_context->set_change_observers(syncable_change_observers_); | |
| 291 return new sync_file_system::SyncableFileSystemOperation( | |
| 292 url, context, operation_context.Pass()); | |
| 293 } | |
| 294 | |
| 295 // For regular sandboxed types. | |
| 296 operation_context->set_update_observers(update_observers_); | |
| 297 operation_context->set_change_observers(change_observers_); | |
| 298 | |
| 299 if (special_storage_policy_.get() && | |
| 300 special_storage_policy_->IsStorageUnlimited(url.origin())) { | |
| 301 operation_context->set_quota_limit_type(quota::kQuotaLimitTypeUnlimited); | |
| 302 } else { | |
| 303 operation_context->set_quota_limit_type(quota::kQuotaLimitTypeLimited); | |
| 304 } | |
| 305 | |
| 306 return new LocalFileSystemOperation(url, context, operation_context.Pass()); | |
| 307 } | |
| 308 | |
| 309 scoped_ptr<webkit_blob::FileStreamReader> | |
| 310 SandboxMountPointProvider::CreateFileStreamReader( | |
| 311 const FileSystemURL& url, | |
| 312 int64 offset, | |
| 313 const base::Time& expected_modification_time, | |
| 314 FileSystemContext* context) const { | |
| 315 if (!IsAccessValid(url)) | |
| 316 return scoped_ptr<webkit_blob::FileStreamReader>(); | |
| 317 return scoped_ptr<webkit_blob::FileStreamReader>( | |
| 318 new FileSystemFileStreamReader( | |
| 319 context, url, offset, expected_modification_time)); | |
| 320 } | |
| 321 | |
| 322 scoped_ptr<fileapi::FileStreamWriter> | |
| 323 SandboxMountPointProvider::CreateFileStreamWriter( | |
| 324 const FileSystemURL& url, | |
| 325 int64 offset, | |
| 326 FileSystemContext* context) const { | |
| 327 if (!IsAccessValid(url)) | |
| 328 return scoped_ptr<fileapi::FileStreamWriter>(); | |
| 329 return scoped_ptr<fileapi::FileStreamWriter>( | |
| 330 new SandboxFileStreamWriter(context, url, offset, update_observers_)); | |
| 331 } | |
| 332 | |
| 333 FileSystemQuotaUtil* SandboxMountPointProvider::GetQuotaUtil() { | |
| 334 return this; | |
| 335 } | |
| 336 | |
| 337 void SandboxMountPointProvider::DeleteFileSystem( | |
| 338 const GURL& origin_url, | |
| 339 FileSystemType type, | |
| 340 FileSystemContext* context, | |
| 341 const DeleteFileSystemCallback& callback) { | |
| 342 base::PostTaskAndReplyWithResult( | |
| 343 context->task_runners()->file_task_runner(), | |
| 344 FROM_HERE, | |
| 345 // It is safe to pass Unretained(this) since context owns it. | |
| 346 base::Bind(&SandboxMountPointProvider::DeleteOriginDataOnFileThread, | |
| 347 base::Unretained(this), | |
| 348 make_scoped_refptr(context), | |
| 349 base::Unretained(context->quota_manager_proxy()), | |
| 350 origin_url, | |
| 351 type), | |
| 352 callback); | |
| 353 } | |
| 354 | |
| 355 SandboxMountPointProvider::OriginEnumerator* | |
| 356 SandboxMountPointProvider::CreateOriginEnumerator() { | |
| 357 return new ObfuscatedOriginEnumerator(sandbox_sync_file_util()); | |
| 358 } | |
| 359 | |
| 360 base::FilePath SandboxMountPointProvider::GetBaseDirectoryForOriginAndType( | |
| 361 const GURL& origin_url, fileapi::FileSystemType type, bool create) { | |
| 362 | |
| 363 base::PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 364 base::FilePath path = sandbox_sync_file_util()->GetDirectoryForOriginAndType( | |
| 365 origin_url, type, create, &error); | |
| 366 if (error != base::PLATFORM_FILE_OK) | |
| 367 return base::FilePath(); | |
| 368 return path; | |
| 369 } | |
| 370 | |
| 371 base::PlatformFileError | |
| 372 SandboxMountPointProvider::DeleteOriginDataOnFileThread( | |
| 373 FileSystemContext* file_system_context, | |
| 374 QuotaManagerProxy* proxy, | |
| 375 const GURL& origin_url, | |
| 376 fileapi::FileSystemType type) { | |
| 377 | |
| 378 int64 usage = GetOriginUsageOnFileThread(file_system_context, | |
| 379 origin_url, type); | |
| 380 | |
| 381 file_system_usage_cache_->CloseCacheFiles(); | |
| 382 bool result = sandbox_sync_file_util()->DeleteDirectoryForOriginAndType( | |
| 383 origin_url, type); | |
| 384 if (result && proxy) { | |
| 385 proxy->NotifyStorageModified( | |
| 386 quota::QuotaClient::kFileSystem, | |
| 387 origin_url, | |
| 388 FileSystemTypeToQuotaStorageType(type), | |
| 389 -usage); | |
| 390 } | |
| 391 | |
| 392 if (result) | |
| 393 return base::PLATFORM_FILE_OK; | |
| 394 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 395 } | |
| 396 | |
| 397 void SandboxMountPointProvider::GetOriginsForTypeOnFileThread( | |
| 398 fileapi::FileSystemType type, std::set<GURL>* origins) { | |
| 399 DCHECK(CanHandleType(type)); | |
| 400 DCHECK(origins); | |
| 401 scoped_ptr<OriginEnumerator> enumerator(CreateOriginEnumerator()); | |
| 402 GURL origin; | |
| 403 while (!(origin = enumerator->Next()).is_empty()) { | |
| 404 if (enumerator->HasFileSystemType(type)) | |
| 405 origins->insert(origin); | |
| 406 } | |
| 407 switch (type) { | |
| 408 case kFileSystemTypeTemporary: | |
| 409 UMA_HISTOGRAM_COUNTS(kTemporaryOriginsCountLabel, origins->size()); | |
| 410 break; | |
| 411 case kFileSystemTypePersistent: | |
| 412 UMA_HISTOGRAM_COUNTS(kPersistentOriginsCountLabel, origins->size()); | |
| 413 break; | |
| 414 case kFileSystemTypeSyncable: | |
| 415 UMA_HISTOGRAM_COUNTS(kSyncableOriginsCountLabel, origins->size()); | |
| 416 break; | |
| 417 default: | |
| 418 break; | |
| 419 } | |
| 420 } | |
| 421 | |
| 422 void SandboxMountPointProvider::GetOriginsForHostOnFileThread( | |
| 423 fileapi::FileSystemType type, const std::string& host, | |
| 424 std::set<GURL>* origins) { | |
| 425 DCHECK(CanHandleType(type)); | |
| 426 DCHECK(origins); | |
| 427 scoped_ptr<OriginEnumerator> enumerator(CreateOriginEnumerator()); | |
| 428 GURL origin; | |
| 429 while (!(origin = enumerator->Next()).is_empty()) { | |
| 430 if (host == net::GetHostOrSpecFromURL(origin) && | |
| 431 enumerator->HasFileSystemType(type)) | |
| 432 origins->insert(origin); | |
| 433 } | |
| 434 } | |
| 435 | |
| 436 int64 SandboxMountPointProvider::GetOriginUsageOnFileThread( | |
| 437 FileSystemContext* file_system_context, | |
| 438 const GURL& origin_url, | |
| 439 fileapi::FileSystemType type) { | |
| 440 DCHECK(CanHandleType(type)); | |
| 441 if (!enable_usage_tracking_) | |
| 442 return 0; | |
| 443 | |
| 444 // Don't use usage cache and return recalculated usage for sticky invalidated | |
| 445 // origins. | |
| 446 if (ContainsKey(sticky_dirty_origins_, std::make_pair(origin_url, type))) | |
| 447 return RecalculateUsage(file_system_context, origin_url, type); | |
| 448 | |
| 449 base::FilePath base_path = | |
| 450 GetBaseDirectoryForOriginAndType(origin_url, type, false); | |
| 451 if (base_path.empty() || !file_util::DirectoryExists(base_path)) | |
| 452 return 0; | |
| 453 base::FilePath usage_file_path = | |
| 454 base_path.Append(FileSystemUsageCache::kUsageFileName); | |
| 455 | |
| 456 bool is_valid = file_system_usage_cache_->IsValid(usage_file_path); | |
| 457 uint32 dirty_status = 0; | |
| 458 bool dirty_status_available = | |
| 459 file_system_usage_cache_->GetDirty(usage_file_path, &dirty_status); | |
| 460 bool visited = !visited_origins_.insert(origin_url).second; | |
| 461 if (is_valid && (dirty_status == 0 || (dirty_status_available && visited))) { | |
| 462 // The usage cache is clean (dirty == 0) or the origin is already | |
| 463 // initialized and running. Read the cache file to get the usage. | |
| 464 int64 usage = 0; | |
| 465 return file_system_usage_cache_->GetUsage(usage_file_path, &usage) ? | |
| 466 usage : -1; | |
| 467 } | |
| 468 // The usage cache has not been initialized or the cache is dirty. | |
| 469 // Get the directory size now and update the cache. | |
| 470 file_system_usage_cache_->Delete(usage_file_path); | |
| 471 | |
| 472 int64 usage = RecalculateUsage(file_system_context, origin_url, type); | |
| 473 | |
| 474 // This clears the dirty flag too. | |
| 475 file_system_usage_cache_->UpdateUsage(usage_file_path, usage); | |
| 476 return usage; | |
| 477 } | |
| 478 | |
| 479 void SandboxMountPointProvider::InvalidateUsageCache( | |
| 480 const GURL& origin, | |
| 481 fileapi::FileSystemType type) { | |
| 482 DCHECK(CanHandleType(type)); | |
| 483 base::PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 484 base::FilePath usage_file_path = GetUsageCachePathForOriginAndType( | |
| 485 sandbox_sync_file_util(), origin, type, &error); | |
| 486 if (error != base::PLATFORM_FILE_OK) | |
| 487 return; | |
| 488 file_system_usage_cache_->IncrementDirty(usage_file_path); | |
| 489 } | |
| 490 | |
| 491 void SandboxMountPointProvider::StickyInvalidateUsageCache( | |
| 492 const GURL& origin, | |
| 493 fileapi::FileSystemType type) { | |
| 494 DCHECK(CanHandleType(type)); | |
| 495 sticky_dirty_origins_.insert(std::make_pair(origin, type)); | |
| 496 quota_observer_->SetUsageCacheEnabled(origin, type, false); | |
| 497 InvalidateUsageCache(origin, type); | |
| 498 } | |
| 499 | |
| 500 void SandboxMountPointProvider::CollectOpenFileSystemMetrics( | |
| 501 base::PlatformFileError error_code) { | |
| 502 base::Time now = base::Time::Now(); | |
| 503 bool throttled = now < next_release_time_for_open_filesystem_stat_; | |
| 504 if (!throttled) { | |
| 505 next_release_time_for_open_filesystem_stat_ = | |
| 506 now + base::TimeDelta::FromHours(kMinimumStatsCollectionIntervalHours); | |
| 507 } | |
| 508 | |
| 509 #define REPORT(report_value) \ | |
| 510 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemDetailLabel, \ | |
| 511 (report_value), \ | |
| 512 kFileSystemErrorMax); \ | |
| 513 if (!throttled) { \ | |
| 514 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemDetailNonThrottledLabel, \ | |
| 515 (report_value), \ | |
| 516 kFileSystemErrorMax); \ | |
| 517 } | |
| 518 | |
| 519 switch (error_code) { | |
| 520 case base::PLATFORM_FILE_OK: | |
| 521 REPORT(kOK); | |
| 522 break; | |
| 523 case base::PLATFORM_FILE_ERROR_INVALID_URL: | |
| 524 REPORT(kInvalidSchemeError); | |
| 525 break; | |
| 526 case base::PLATFORM_FILE_ERROR_NOT_FOUND: | |
| 527 REPORT(kNotFound); | |
| 528 break; | |
| 529 case base::PLATFORM_FILE_ERROR_FAILED: | |
| 530 default: | |
| 531 REPORT(kUnknownError); | |
| 532 break; | |
| 533 } | |
| 534 #undef REPORT | |
| 535 } | |
| 536 | |
| 537 const UpdateObserverList* SandboxMountPointProvider::GetUpdateObservers( | |
| 538 FileSystemType type) const { | |
| 539 DCHECK(CanHandleType(type)); | |
| 540 if (type == kFileSystemTypeSyncable) | |
| 541 return &syncable_update_observers_; | |
| 542 return &update_observers_; | |
| 543 } | |
| 544 | |
| 545 const AccessObserverList* SandboxMountPointProvider::GetAccessObservers( | |
| 546 FileSystemType type) const { | |
| 547 DCHECK(CanHandleType(type)); | |
| 548 return &access_observers_; | |
| 549 } | |
| 550 | |
| 551 void SandboxMountPointProvider::AddFileUpdateObserver( | |
| 552 FileSystemType type, | |
| 553 FileUpdateObserver* observer, | |
| 554 base::SequencedTaskRunner* task_runner) { | |
| 555 DCHECK(CanHandleType(type)); | |
| 556 UpdateObserverList* list = &update_observers_; | |
| 557 if (type == kFileSystemTypeSyncable) | |
| 558 list = &syncable_update_observers_; | |
| 559 UpdateObserverList::Source observer_source = list->source(); | |
| 560 observer_source.AddObserver(observer, task_runner); | |
| 561 *list = UpdateObserverList(observer_source); | |
| 562 } | |
| 563 | |
| 564 void SandboxMountPointProvider::AddFileChangeObserver( | |
| 565 FileSystemType type, | |
| 566 FileChangeObserver* observer, | |
| 567 base::SequencedTaskRunner* task_runner) { | |
| 568 ChangeObserverList* list = &change_observers_; | |
| 569 if (type == kFileSystemTypeSyncable) | |
| 570 list = &syncable_change_observers_; | |
| 571 ChangeObserverList::Source observer_source = list->source(); | |
| 572 observer_source.AddObserver(observer, task_runner); | |
| 573 *list = ChangeObserverList(observer_source); | |
| 574 } | |
| 575 | |
| 576 bool SandboxMountPointProvider::IsAccessValid( | |
| 577 const FileSystemURL& url) const { | |
| 578 if (!IsAllowedScheme(url.origin())) | |
| 579 return false; | |
| 580 | |
| 581 if (!CanHandleType(url.type())) | |
| 582 return false; | |
| 583 | |
| 584 if (url.path().ReferencesParent()) | |
| 585 return false; | |
| 586 | |
| 587 // Return earlier if the path is '/', because VirtualPath::BaseName() | |
| 588 // returns '/' for '/' and we fail the "basename != '/'" check below. | |
| 589 // (We exclude '.' because it's disallowed by spec.) | |
| 590 if (VirtualPath::IsRootPath(url.path()) && | |
| 591 url.path() != base::FilePath(base::FilePath::kCurrentDirectory)) | |
| 592 return true; | |
| 593 | |
| 594 // Restricted names specified in | |
| 595 // http://dev.w3.org/2009/dap/file-system/file-dir-sys.html#naming-restriction
s | |
| 596 base::FilePath filename = VirtualPath::BaseName(url.path()); | |
| 597 // See if the name is allowed to create. | |
| 598 for (size_t i = 0; i < arraysize(kRestrictedNames); ++i) { | |
| 599 if (filename.value() == kRestrictedNames[i]) | |
| 600 return false; | |
| 601 } | |
| 602 for (size_t i = 0; i < arraysize(kRestrictedChars); ++i) { | |
| 603 if (filename.value().find(kRestrictedChars[i]) != | |
| 604 base::FilePath::StringType::npos) | |
| 605 return false; | |
| 606 } | |
| 607 | |
| 608 return true; | |
| 609 } | |
| 610 | |
| 611 base::FilePath SandboxMountPointProvider::GetUsageCachePathForOriginAndType( | |
| 612 const GURL& origin_url, | |
| 613 FileSystemType type) { | |
| 614 base::PlatformFileError error; | |
| 615 base::FilePath path = GetUsageCachePathForOriginAndType( | |
| 616 sandbox_sync_file_util(), origin_url, type, &error); | |
| 617 if (error != base::PLATFORM_FILE_OK) | |
| 618 return base::FilePath(); | |
| 619 return path; | |
| 620 } | |
| 621 | |
| 622 // static | |
| 623 base::FilePath SandboxMountPointProvider::GetUsageCachePathForOriginAndType( | |
| 624 ObfuscatedFileUtil* sandbox_file_util, | |
| 625 const GURL& origin_url, | |
| 626 fileapi::FileSystemType type, | |
| 627 base::PlatformFileError* error_out) { | |
| 628 DCHECK(error_out); | |
| 629 *error_out = base::PLATFORM_FILE_OK; | |
| 630 base::FilePath base_path = sandbox_file_util->GetDirectoryForOriginAndType( | |
| 631 origin_url, type, false /* create */, error_out); | |
| 632 if (*error_out != base::PLATFORM_FILE_OK) | |
| 633 return base::FilePath(); | |
| 634 return base_path.Append(FileSystemUsageCache::kUsageFileName); | |
| 635 } | |
| 636 | |
| 637 bool SandboxMountPointProvider::IsAllowedScheme(const GURL& url) const { | |
| 638 // Basically we only accept http or https. We allow file:// URLs | |
| 639 // only if --allow-file-access-from-files flag is given. | |
| 640 if (url.SchemeIs("http") || url.SchemeIs("https")) | |
| 641 return true; | |
| 642 if (url.SchemeIsFileSystem()) | |
| 643 return url.inner_url() && IsAllowedScheme(*url.inner_url()); | |
| 644 | |
| 645 for (size_t i = 0; | |
| 646 i < file_system_options_.additional_allowed_schemes().size(); | |
| 647 ++i) { | |
| 648 if (url.SchemeIs( | |
| 649 file_system_options_.additional_allowed_schemes()[i].c_str())) | |
| 650 return true; | |
| 651 } | |
| 652 return false; | |
| 653 } | |
| 654 | |
| 655 ObfuscatedFileUtil* SandboxMountPointProvider::sandbox_sync_file_util() { | |
| 656 DCHECK(sandbox_file_util_.get()); | |
| 657 return static_cast<ObfuscatedFileUtil*>(sandbox_file_util_->sync_file_util()); | |
| 658 } | |
| 659 | |
| 660 // static | |
| 661 void SandboxMountPointProvider::InvalidateUsageCacheOnFileThread( | |
| 662 ObfuscatedFileUtil* file_util, | |
| 663 const GURL& origin, | |
| 664 FileSystemType type, | |
| 665 FileSystemUsageCache* usage_cache) { | |
| 666 base::PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 667 base::FilePath usage_cache_path = GetUsageCachePathForOriginAndType( | |
| 668 file_util, origin, type, &error); | |
| 669 if (error == base::PLATFORM_FILE_OK) | |
| 670 usage_cache->IncrementDirty(usage_cache_path); | |
| 671 } | |
| 672 | |
| 673 int64 SandboxMountPointProvider::RecalculateUsage(FileSystemContext* context, | |
| 674 const GURL& origin, | |
| 675 FileSystemType type) { | |
| 676 FileSystemOperationContext operation_context(context); | |
| 677 FileSystemURL url = context->CreateCrackedFileSystemURL( | |
| 678 origin, type, base::FilePath()); | |
| 679 scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator> enumerator( | |
| 680 sandbox_sync_file_util()->CreateFileEnumerator( | |
| 681 &operation_context, url, true)); | |
| 682 | |
| 683 base::FilePath file_path_each; | |
| 684 int64 usage = 0; | |
| 685 | |
| 686 while (!(file_path_each = enumerator->Next()).empty()) { | |
| 687 usage += enumerator->Size(); | |
| 688 usage += ObfuscatedFileUtil::ComputeFilePathCost(file_path_each); | |
| 689 } | |
| 690 | |
| 691 return usage; | |
| 692 } | |
| 693 | |
| 694 } // namespace fileapi | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 18344013:
fileapi: Rename FileSystemMountProvider to FileSystemBackend (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src