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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/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 "googleurl/src/gurl.h" | |
| 16 #include "net/base/net_util.h" | |
| 17 #include "webkit/browser/fileapi/file_system_usage_cache.h" | |
| 18 #include "webkit/fileapi/async_file_util_adapter.h" | |
| 19 #include "webkit/fileapi/copy_or_move_file_validator.h" | |
| 20 #include "webkit/fileapi/file_system_context.h" | |
| 21 #include "webkit/fileapi/file_system_file_stream_reader.h" | |
| 22 #include "webkit/fileapi/file_system_operation_context.h" | |
| 23 #include "webkit/fileapi/file_system_options.h" | |
| 24 #include "webkit/fileapi/file_system_task_runners.h" | |
| 25 #include "webkit/fileapi/file_system_types.h" | |
| 26 #include "webkit/fileapi/file_system_util.h" | |
| 27 #include "webkit/fileapi/local_file_system_operation.h" | |
| 28 #include "webkit/fileapi/obfuscated_file_util.h" | |
| 29 #include "webkit/fileapi/sandbox_file_stream_writer.h" | |
| 30 #include "webkit/fileapi/sandbox_quota_observer.h" | |
| 31 #include "webkit/fileapi/syncable/syncable_file_system_operation.h" | |
| 32 #include "webkit/quota/quota_manager.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 DidValidateFileSystemRoot( | |
| 98 base::WeakPtr<SandboxMountPointProvider> mount_point_provider, | |
| 99 const FileSystemMountPointProvider::ValidateFileSystemCallback& callback, | |
| 100 base::PlatformFileError* error) { | |
| 101 if (mount_point_provider) | |
| 102 mount_point_provider.get()->CollectOpenFileSystemMetrics(*error); | |
| 103 callback.Run(*error); | |
| 104 } | |
| 105 | |
| 106 void ValidateRootOnFileThread( | |
| 107 ObfuscatedFileUtil* file_util, | |
| 108 const GURL& origin_url, | |
| 109 FileSystemType type, | |
| 110 bool create, | |
| 111 base::PlatformFileError* error_ptr) { | |
| 112 DCHECK(error_ptr); | |
| 113 | |
| 114 base::FilePath root_path = | |
| 115 file_util->GetDirectoryForOriginAndType( | |
| 116 origin_url, type, create, error_ptr); | |
| 117 if (*error_ptr != base::PLATFORM_FILE_OK) { | |
| 118 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemLabel, | |
| 119 kCreateDirectoryError, | |
| 120 kFileSystemErrorMax); | |
| 121 } else { | |
| 122 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemLabel, kOK, kFileSystemErrorMax); | |
| 123 } | |
| 124 // The reference of file_util will be derefed on the FILE thread | |
| 125 // when the storage of this callback gets deleted regardless of whether | |
| 126 // this method is called or not. | |
| 127 } | |
| 128 | |
| 129 } // anonymous namespace | |
| 130 | |
| 131 const base::FilePath::CharType | |
| 132 SandboxMountPointProvider::kFileSystemDirectory[] = | |
| 133 FILE_PATH_LITERAL("File System"); | |
| 134 | |
| 135 // static | |
| 136 bool SandboxMountPointProvider::IsSandboxType(FileSystemType type) { | |
| 137 return type == kFileSystemTypeTemporary || | |
| 138 type == kFileSystemTypePersistent || | |
| 139 type == kFileSystemTypeSyncable; | |
| 140 } | |
| 141 | |
| 142 SandboxMountPointProvider::SandboxMountPointProvider( | |
| 143 quota::QuotaManagerProxy* quota_manager_proxy, | |
| 144 base::SequencedTaskRunner* file_task_runner, | |
| 145 const base::FilePath& profile_path, | |
| 146 const FileSystemOptions& file_system_options, | |
| 147 quota::SpecialStoragePolicy* special_storage_policy) | |
| 148 : file_task_runner_(file_task_runner), | |
| 149 profile_path_(profile_path), | |
| 150 file_system_options_(file_system_options), | |
| 151 enable_temporary_file_system_in_incognito_(false), | |
| 152 sandbox_file_util_( | |
| 153 new AsyncFileUtilAdapter( | |
| 154 new ObfuscatedFileUtil( | |
| 155 profile_path.Append(kFileSystemDirectory)))), | |
| 156 file_system_usage_cache_(new FileSystemUsageCache(file_task_runner)), | |
| 157 quota_observer_(new SandboxQuotaObserver( | |
| 158 quota_manager_proxy, | |
| 159 file_task_runner, | |
| 160 sandbox_sync_file_util(), | |
| 161 file_system_usage_cache_.get())), | |
| 162 enable_usage_tracking_( | |
| 163 !CommandLine::ForCurrentProcess()->HasSwitch( | |
| 164 kDisableUsageTracking)), | |
| 165 special_storage_policy_(special_storage_policy), | |
| 166 weak_factory_(this) { | |
| 167 // Set quota observers. | |
| 168 UpdateObserverList::Source update_observers_src; | |
| 169 AccessObserverList::Source access_observers_src; | |
| 170 | |
| 171 if (enable_usage_tracking_) { | |
| 172 update_observers_src.AddObserver(quota_observer_.get(), file_task_runner_); | |
| 173 access_observers_src.AddObserver(quota_observer_.get(), NULL); | |
| 174 } | |
| 175 | |
| 176 update_observers_ = UpdateObserverList(update_observers_src); | |
| 177 access_observers_ = AccessObserverList(access_observers_src); | |
| 178 syncable_update_observers_ = UpdateObserverList(update_observers_src); | |
| 179 } | |
| 180 | |
| 181 SandboxMountPointProvider::~SandboxMountPointProvider() { | |
| 182 if (!file_task_runner_->RunsTasksOnCurrentThread()) { | |
| 183 AsyncFileUtilAdapter* sandbox_file_util = sandbox_file_util_.release(); | |
| 184 SandboxQuotaObserver* quota_observer = quota_observer_.release(); | |
| 185 FileSystemUsageCache* file_system_usage_cache = | |
| 186 file_system_usage_cache_.release(); | |
| 187 if (!file_task_runner_->DeleteSoon(FROM_HERE, sandbox_file_util)) | |
| 188 delete sandbox_file_util; | |
| 189 if (!file_task_runner_->DeleteSoon(FROM_HERE, quota_observer)) | |
| 190 delete quota_observer; | |
| 191 if (!file_task_runner_->DeleteSoon(FROM_HERE, file_system_usage_cache)) | |
| 192 delete file_system_usage_cache; | |
| 193 } | |
| 194 } | |
| 195 | |
| 196 bool SandboxMountPointProvider::CanHandleType(FileSystemType type) const { | |
| 197 return IsSandboxType(type); | |
| 198 } | |
| 199 | |
| 200 void SandboxMountPointProvider::ValidateFileSystemRoot( | |
| 201 const GURL& origin_url, fileapi::FileSystemType type, bool create, | |
| 202 const ValidateFileSystemCallback& callback) { | |
| 203 if (file_system_options_.is_incognito() && | |
| 204 !(type == kFileSystemTypeTemporary && | |
| 205 enable_temporary_file_system_in_incognito_)) { | |
| 206 // TODO(kinuko): return an isolated temporary directory. | |
| 207 callback.Run(base::PLATFORM_FILE_ERROR_SECURITY); | |
| 208 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemLabel, | |
| 209 kIncognito, | |
| 210 kFileSystemErrorMax); | |
| 211 return; | |
| 212 } | |
| 213 | |
| 214 if (!IsAllowedScheme(origin_url)) { | |
| 215 callback.Run(base::PLATFORM_FILE_ERROR_SECURITY); | |
| 216 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemLabel, | |
| 217 kInvalidSchemeError, | |
| 218 kFileSystemErrorMax); | |
| 219 return; | |
| 220 } | |
| 221 | |
| 222 base::PlatformFileError* error_ptr = new base::PlatformFileError; | |
| 223 file_task_runner_->PostTaskAndReply( | |
| 224 FROM_HERE, | |
| 225 base::Bind(&ValidateRootOnFileThread, | |
| 226 sandbox_sync_file_util(), | |
| 227 origin_url, type, create, | |
| 228 base::Unretained(error_ptr)), | |
| 229 base::Bind(&DidValidateFileSystemRoot, | |
| 230 weak_factory_.GetWeakPtr(), | |
| 231 callback, base::Owned(error_ptr))); | |
| 232 | |
| 233 if (enable_usage_tracking_) | |
| 234 return; | |
| 235 | |
| 236 // Schedule full usage recalculation on the next launch without | |
| 237 // --disable-file-system-usage-tracking. | |
| 238 file_task_runner_->PostTask( | |
| 239 FROM_HERE, | |
| 240 base::Bind(&SandboxMountPointProvider::InvalidateUsageCacheOnFileThread, | |
| 241 sandbox_sync_file_util(), origin_url, type, | |
| 242 file_system_usage_cache_.get())); | |
| 243 }; | |
| 244 | |
| 245 base::FilePath | |
| 246 SandboxMountPointProvider::GetFileSystemRootPathOnFileThread( | |
| 247 const FileSystemURL& url, | |
| 248 bool create) { | |
| 249 if (file_system_options_.is_incognito() && | |
| 250 !(enable_temporary_file_system_in_incognito_ && | |
| 251 url.type() == kFileSystemTypeTemporary)) { | |
| 252 // TODO(kinuko): return an isolated temporary directory. | |
| 253 return base::FilePath(); | |
| 254 } | |
| 255 | |
| 256 if (!IsAllowedScheme(url.origin())) | |
| 257 return base::FilePath(); | |
| 258 | |
| 259 return GetBaseDirectoryForOriginAndType(url.origin(), url.type(), create); | |
| 260 } | |
| 261 | |
| 262 FileSystemFileUtil* SandboxMountPointProvider::GetFileUtil( | |
| 263 FileSystemType type) { | |
| 264 DCHECK(sandbox_file_util_.get()); | |
| 265 return sandbox_file_util_->sync_file_util(); | |
| 266 } | |
| 267 | |
| 268 AsyncFileUtil* SandboxMountPointProvider::GetAsyncFileUtil( | |
| 269 FileSystemType type) { | |
| 270 return sandbox_file_util_.get(); | |
| 271 } | |
| 272 | |
| 273 CopyOrMoveFileValidatorFactory* | |
| 274 SandboxMountPointProvider::GetCopyOrMoveFileValidatorFactory( | |
| 275 FileSystemType type, | |
| 276 base::PlatformFileError* error_code) { | |
| 277 DCHECK(error_code); | |
| 278 *error_code = base::PLATFORM_FILE_OK; | |
| 279 return NULL; | |
| 280 } | |
| 281 | |
| 282 void SandboxMountPointProvider::InitializeCopyOrMoveFileValidatorFactory( | |
| 283 FileSystemType type, | |
| 284 scoped_ptr<CopyOrMoveFileValidatorFactory> factory) { | |
| 285 DCHECK(!factory); | |
| 286 } | |
| 287 | |
| 288 FilePermissionPolicy SandboxMountPointProvider::GetPermissionPolicy( | |
| 289 const FileSystemURL& url, int permissions) const { | |
| 290 if (!CanHandleType(url.type()) || !IsAllowedScheme(url.origin())) | |
| 291 return FILE_PERMISSION_ALWAYS_DENY; | |
| 292 | |
| 293 if (url.path().ReferencesParent()) | |
| 294 return FILE_PERMISSION_ALWAYS_DENY; | |
| 295 | |
| 296 // Any write access is disallowed on the root path. | |
| 297 if ((url.path().empty() || VirtualPath::DirName(url.path()) == url.path()) | |
| 298 && (permissions & ~kReadFilePermissions)) | |
| 299 return FILE_PERMISSION_ALWAYS_DENY; | |
| 300 | |
| 301 if ((permissions & kCreateFilePermissions) == kCreateFilePermissions) { | |
| 302 base::FilePath filename = VirtualPath::BaseName(url.path()); | |
| 303 // See if the name is allowed to create. | |
| 304 for (size_t i = 0; i < arraysize(kRestrictedNames); ++i) { | |
| 305 if (filename.value() == kRestrictedNames[i]) | |
| 306 return FILE_PERMISSION_ALWAYS_DENY; | |
| 307 } | |
| 308 for (size_t i = 0; i < arraysize(kRestrictedChars); ++i) { | |
| 309 if (filename.value().find(kRestrictedChars[i]) != | |
| 310 base::FilePath::StringType::npos) | |
| 311 return FILE_PERMISSION_ALWAYS_DENY; | |
| 312 } | |
| 313 } | |
| 314 | |
| 315 // Access to the sandbox directory (and only to the directory) should be | |
| 316 // always allowed. | |
| 317 return FILE_PERMISSION_ALWAYS_ALLOW; | |
| 318 } | |
| 319 | |
| 320 FileSystemOperation* SandboxMountPointProvider::CreateFileSystemOperation( | |
| 321 const FileSystemURL& url, | |
| 322 FileSystemContext* context, | |
| 323 base::PlatformFileError* error_code) const { | |
| 324 scoped_ptr<FileSystemOperationContext> operation_context( | |
| 325 new FileSystemOperationContext(context)); | |
| 326 | |
| 327 // Copy the observer lists (assuming we only have small number of observers). | |
| 328 if (url.type() == kFileSystemTypeSyncable) { | |
| 329 operation_context->set_update_observers(syncable_update_observers_); | |
| 330 operation_context->set_change_observers(syncable_change_observers_); | |
| 331 operation_context->set_access_observers(access_observers_); | |
| 332 return new sync_file_system::SyncableFileSystemOperation( | |
| 333 context, operation_context.Pass()); | |
| 334 } | |
| 335 | |
| 336 // For regular sandboxed types. | |
| 337 operation_context->set_update_observers(update_observers_); | |
| 338 operation_context->set_access_observers(access_observers_); | |
| 339 | |
| 340 if (special_storage_policy_ && | |
| 341 special_storage_policy_->IsStorageUnlimited(url.origin())) { | |
| 342 operation_context->set_quota_limit_type(quota::kQuotaLimitTypeUnlimited); | |
| 343 } else { | |
| 344 operation_context->set_quota_limit_type(quota::kQuotaLimitTypeLimited); | |
| 345 } | |
| 346 | |
| 347 // Temporarily disable returning unlimited storage policy for non-PERSISTENT | |
| 348 // storage. Since it may hurt performance for all FileSystem operation. | |
| 349 if (url.type() != kFileSystemTypePersistent && | |
| 350 operation_context->quota_limit_type() == quota::kQuotaLimitTypeUnlimited) | |
| 351 operation_context->set_quota_limit_type(quota::kQuotaLimitTypeLimited); | |
| 352 | |
| 353 return new LocalFileSystemOperation(context, operation_context.Pass()); | |
| 354 } | |
| 355 | |
| 356 scoped_ptr<webkit_blob::FileStreamReader> | |
| 357 SandboxMountPointProvider::CreateFileStreamReader( | |
| 358 const FileSystemURL& url, | |
| 359 int64 offset, | |
| 360 const base::Time& expected_modification_time, | |
| 361 FileSystemContext* context) const { | |
| 362 return scoped_ptr<webkit_blob::FileStreamReader>( | |
| 363 new FileSystemFileStreamReader( | |
| 364 context, url, offset, expected_modification_time)); | |
| 365 } | |
| 366 | |
| 367 scoped_ptr<fileapi::FileStreamWriter> | |
| 368 SandboxMountPointProvider::CreateFileStreamWriter( | |
| 369 const FileSystemURL& url, | |
| 370 int64 offset, | |
| 371 FileSystemContext* context) const { | |
| 372 return scoped_ptr<fileapi::FileStreamWriter>( | |
| 373 new SandboxFileStreamWriter(context, url, offset, update_observers_)); | |
| 374 } | |
| 375 | |
| 376 FileSystemQuotaUtil* SandboxMountPointProvider::GetQuotaUtil() { | |
| 377 return this; | |
| 378 } | |
| 379 | |
| 380 void SandboxMountPointProvider::DeleteFileSystem( | |
| 381 const GURL& origin_url, | |
| 382 FileSystemType type, | |
| 383 FileSystemContext* context, | |
| 384 const DeleteFileSystemCallback& callback) { | |
| 385 base::PostTaskAndReplyWithResult( | |
| 386 context->task_runners()->file_task_runner(), | |
| 387 FROM_HERE, | |
| 388 // It is safe to pass Unretained(this) since context owns it. | |
| 389 base::Bind(&SandboxMountPointProvider::DeleteOriginDataOnFileThread, | |
| 390 base::Unretained(this), | |
| 391 make_scoped_refptr(context), | |
| 392 base::Unretained(context->quota_manager_proxy()), | |
| 393 origin_url, | |
| 394 type), | |
| 395 callback); | |
| 396 } | |
| 397 | |
| 398 SandboxMountPointProvider::OriginEnumerator* | |
| 399 SandboxMountPointProvider::CreateOriginEnumerator() { | |
| 400 return new ObfuscatedOriginEnumerator(sandbox_sync_file_util()); | |
| 401 } | |
| 402 | |
| 403 base::FilePath SandboxMountPointProvider::GetBaseDirectoryForOriginAndType( | |
| 404 const GURL& origin_url, fileapi::FileSystemType type, bool create) { | |
| 405 | |
| 406 base::PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 407 base::FilePath path = sandbox_sync_file_util()->GetDirectoryForOriginAndType( | |
| 408 origin_url, type, create, &error); | |
| 409 if (error != base::PLATFORM_FILE_OK) | |
| 410 return base::FilePath(); | |
| 411 return path; | |
| 412 } | |
| 413 | |
| 414 base::PlatformFileError | |
| 415 SandboxMountPointProvider::DeleteOriginDataOnFileThread( | |
| 416 FileSystemContext* file_system_context, | |
| 417 QuotaManagerProxy* proxy, | |
| 418 const GURL& origin_url, | |
| 419 fileapi::FileSystemType type) { | |
| 420 | |
| 421 int64 usage = GetOriginUsageOnFileThread(file_system_context, | |
| 422 origin_url, type); | |
| 423 | |
| 424 file_system_usage_cache_->CloseCacheFiles(); | |
| 425 bool result = sandbox_sync_file_util()->DeleteDirectoryForOriginAndType( | |
| 426 origin_url, type); | |
| 427 if (result && proxy) { | |
| 428 proxy->NotifyStorageModified( | |
| 429 quota::QuotaClient::kFileSystem, | |
| 430 origin_url, | |
| 431 FileSystemTypeToQuotaStorageType(type), | |
| 432 -usage); | |
| 433 } | |
| 434 | |
| 435 if (result) | |
| 436 return base::PLATFORM_FILE_OK; | |
| 437 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 438 } | |
| 439 | |
| 440 void SandboxMountPointProvider::GetOriginsForTypeOnFileThread( | |
| 441 fileapi::FileSystemType type, std::set<GURL>* origins) { | |
| 442 DCHECK(CanHandleType(type)); | |
| 443 DCHECK(origins); | |
| 444 scoped_ptr<OriginEnumerator> enumerator(CreateOriginEnumerator()); | |
| 445 GURL origin; | |
| 446 while (!(origin = enumerator->Next()).is_empty()) { | |
| 447 if (enumerator->HasFileSystemType(type)) | |
| 448 origins->insert(origin); | |
| 449 } | |
| 450 switch (type) { | |
| 451 case kFileSystemTypeTemporary: | |
| 452 UMA_HISTOGRAM_COUNTS(kTemporaryOriginsCountLabel, origins->size()); | |
| 453 break; | |
| 454 case kFileSystemTypePersistent: | |
| 455 UMA_HISTOGRAM_COUNTS(kPersistentOriginsCountLabel, origins->size()); | |
| 456 break; | |
| 457 case kFileSystemTypeSyncable: | |
| 458 UMA_HISTOGRAM_COUNTS(kSyncableOriginsCountLabel, origins->size()); | |
| 459 break; | |
| 460 default: | |
| 461 break; | |
| 462 } | |
| 463 } | |
| 464 | |
| 465 void SandboxMountPointProvider::GetOriginsForHostOnFileThread( | |
| 466 fileapi::FileSystemType type, const std::string& host, | |
| 467 std::set<GURL>* origins) { | |
| 468 DCHECK(CanHandleType(type)); | |
| 469 DCHECK(origins); | |
| 470 scoped_ptr<OriginEnumerator> enumerator(CreateOriginEnumerator()); | |
| 471 GURL origin; | |
| 472 while (!(origin = enumerator->Next()).is_empty()) { | |
| 473 if (host == net::GetHostOrSpecFromURL(origin) && | |
| 474 enumerator->HasFileSystemType(type)) | |
| 475 origins->insert(origin); | |
| 476 } | |
| 477 } | |
| 478 | |
| 479 int64 SandboxMountPointProvider::GetOriginUsageOnFileThread( | |
| 480 FileSystemContext* file_system_context, | |
| 481 const GURL& origin_url, | |
| 482 fileapi::FileSystemType type) { | |
| 483 DCHECK(CanHandleType(type)); | |
| 484 if (!enable_usage_tracking_) | |
| 485 return 0; | |
| 486 | |
| 487 // Don't use usage cache and return recalculated usage for sticky invalidated | |
| 488 // origins. | |
| 489 if (ContainsKey(sticky_dirty_origins_, std::make_pair(origin_url, type))) | |
| 490 return RecalculateUsage(file_system_context, origin_url, type); | |
| 491 | |
| 492 base::FilePath base_path = | |
| 493 GetBaseDirectoryForOriginAndType(origin_url, type, false); | |
| 494 if (base_path.empty() || !file_util::DirectoryExists(base_path)) | |
| 495 return 0; | |
| 496 base::FilePath usage_file_path = | |
| 497 base_path.Append(FileSystemUsageCache::kUsageFileName); | |
| 498 | |
| 499 bool is_valid = file_system_usage_cache_->IsValid(usage_file_path); | |
| 500 uint32 dirty_status = 0; | |
| 501 bool dirty_status_available = | |
| 502 file_system_usage_cache_->GetDirty(usage_file_path, &dirty_status); | |
| 503 bool visited = !visited_origins_.insert(origin_url).second; | |
| 504 if (is_valid && (dirty_status == 0 || (dirty_status_available && visited))) { | |
| 505 // The usage cache is clean (dirty == 0) or the origin is already | |
| 506 // initialized and running. Read the cache file to get the usage. | |
| 507 int64 usage = 0; | |
| 508 return file_system_usage_cache_->GetUsage(usage_file_path, &usage) ? | |
| 509 usage : -1; | |
| 510 } | |
| 511 // The usage cache has not been initialized or the cache is dirty. | |
| 512 // Get the directory size now and update the cache. | |
| 513 file_system_usage_cache_->Delete(usage_file_path); | |
| 514 | |
| 515 int64 usage = RecalculateUsage(file_system_context, origin_url, type); | |
| 516 | |
| 517 // This clears the dirty flag too. | |
| 518 file_system_usage_cache_->UpdateUsage(usage_file_path, usage); | |
| 519 return usage; | |
| 520 } | |
| 521 | |
| 522 void SandboxMountPointProvider::InvalidateUsageCache( | |
| 523 const GURL& origin, | |
| 524 fileapi::FileSystemType type) { | |
| 525 DCHECK(CanHandleType(type)); | |
| 526 base::PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 527 base::FilePath usage_file_path = GetUsageCachePathForOriginAndType( | |
| 528 sandbox_sync_file_util(), origin, type, &error); | |
| 529 if (error != base::PLATFORM_FILE_OK) | |
| 530 return; | |
| 531 file_system_usage_cache_->IncrementDirty(usage_file_path); | |
| 532 } | |
| 533 | |
| 534 void SandboxMountPointProvider::StickyInvalidateUsageCache( | |
| 535 const GURL& origin, | |
| 536 fileapi::FileSystemType type) { | |
| 537 DCHECK(CanHandleType(type)); | |
| 538 sticky_dirty_origins_.insert(std::make_pair(origin, type)); | |
| 539 quota_observer_->SetUsageCacheEnabled(origin, type, false); | |
| 540 InvalidateUsageCache(origin, type); | |
| 541 } | |
| 542 | |
| 543 void SandboxMountPointProvider::CollectOpenFileSystemMetrics( | |
| 544 base::PlatformFileError error_code) { | |
| 545 base::Time now = base::Time::Now(); | |
| 546 bool throttled = now < next_release_time_for_open_filesystem_stat_; | |
| 547 if (!throttled) { | |
| 548 next_release_time_for_open_filesystem_stat_ = | |
| 549 now + base::TimeDelta::FromHours(kMinimumStatsCollectionIntervalHours); | |
| 550 } | |
| 551 | |
| 552 #define REPORT(report_value) \ | |
| 553 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemDetailLabel, \ | |
| 554 (report_value), \ | |
| 555 kFileSystemErrorMax); \ | |
| 556 if (!throttled) { \ | |
| 557 UMA_HISTOGRAM_ENUMERATION(kOpenFileSystemDetailNonThrottledLabel, \ | |
| 558 (report_value), \ | |
| 559 kFileSystemErrorMax); \ | |
| 560 } | |
| 561 | |
| 562 switch (error_code) { | |
| 563 case base::PLATFORM_FILE_OK: | |
| 564 REPORT(kOK); | |
| 565 break; | |
| 566 case base::PLATFORM_FILE_ERROR_INVALID_URL: | |
| 567 REPORT(kInvalidSchemeError); | |
| 568 break; | |
| 569 case base::PLATFORM_FILE_ERROR_NOT_FOUND: | |
| 570 REPORT(kNotFound); | |
| 571 break; | |
| 572 case base::PLATFORM_FILE_ERROR_FAILED: | |
| 573 default: | |
| 574 REPORT(kUnknownError); | |
| 575 break; | |
| 576 } | |
| 577 #undef REPORT | |
| 578 } | |
| 579 | |
| 580 const UpdateObserverList* SandboxMountPointProvider::GetUpdateObservers( | |
| 581 FileSystemType type) const { | |
| 582 DCHECK(CanHandleType(type)); | |
| 583 if (type == kFileSystemTypeSyncable) | |
| 584 return &syncable_update_observers_; | |
| 585 return &update_observers_; | |
| 586 } | |
| 587 | |
| 588 void SandboxMountPointProvider::AddSyncableFileUpdateObserver( | |
| 589 FileUpdateObserver* observer, | |
| 590 base::SequencedTaskRunner* task_runner) { | |
| 591 UpdateObserverList::Source observer_source = | |
| 592 syncable_update_observers_.source(); | |
| 593 observer_source.AddObserver(observer, task_runner); | |
| 594 syncable_update_observers_ = UpdateObserverList(observer_source); | |
| 595 } | |
| 596 | |
| 597 void SandboxMountPointProvider::AddSyncableFileChangeObserver( | |
| 598 FileChangeObserver* observer, | |
| 599 base::SequencedTaskRunner* task_runner) { | |
| 600 ChangeObserverList::Source observer_source = | |
| 601 syncable_change_observers_.source(); | |
| 602 observer_source.AddObserver(observer, task_runner); | |
| 603 syncable_change_observers_ = ChangeObserverList(observer_source); | |
| 604 } | |
| 605 | |
| 606 LocalFileSystemOperation* | |
| 607 SandboxMountPointProvider::CreateFileSystemOperationForSync( | |
| 608 FileSystemContext* file_system_context) { | |
| 609 scoped_ptr<FileSystemOperationContext> operation_context( | |
| 610 new FileSystemOperationContext(file_system_context)); | |
| 611 operation_context->set_update_observers(update_observers_); | |
| 612 operation_context->set_access_observers(access_observers_); | |
| 613 return new LocalFileSystemOperation(file_system_context, | |
| 614 operation_context.Pass()); | |
| 615 } | |
| 616 | |
| 617 base::FilePath SandboxMountPointProvider::GetUsageCachePathForOriginAndType( | |
| 618 const GURL& origin_url, | |
| 619 FileSystemType type) { | |
| 620 base::PlatformFileError error; | |
| 621 base::FilePath path = GetUsageCachePathForOriginAndType( | |
| 622 sandbox_sync_file_util(), origin_url, type, &error); | |
| 623 if (error != base::PLATFORM_FILE_OK) | |
| 624 return base::FilePath(); | |
| 625 return path; | |
| 626 } | |
| 627 | |
| 628 // static | |
| 629 base::FilePath SandboxMountPointProvider::GetUsageCachePathForOriginAndType( | |
| 630 ObfuscatedFileUtil* sandbox_file_util, | |
| 631 const GURL& origin_url, | |
| 632 fileapi::FileSystemType type, | |
| 633 base::PlatformFileError* error_out) { | |
| 634 DCHECK(error_out); | |
| 635 *error_out = base::PLATFORM_FILE_OK; | |
| 636 base::FilePath base_path = sandbox_file_util->GetDirectoryForOriginAndType( | |
| 637 origin_url, type, false /* create */, error_out); | |
| 638 if (*error_out != base::PLATFORM_FILE_OK) | |
| 639 return base::FilePath(); | |
| 640 return base_path.Append(FileSystemUsageCache::kUsageFileName); | |
| 641 } | |
| 642 | |
| 643 bool SandboxMountPointProvider::IsAllowedScheme(const GURL& url) const { | |
| 644 // Basically we only accept http or https. We allow file:// URLs | |
| 645 // only if --allow-file-access-from-files flag is given. | |
| 646 if (url.SchemeIs("http") || url.SchemeIs("https")) | |
| 647 return true; | |
| 648 if (url.SchemeIsFileSystem()) | |
| 649 return url.inner_url() && IsAllowedScheme(*url.inner_url()); | |
| 650 | |
| 651 for (size_t i = 0; | |
| 652 i < file_system_options_.additional_allowed_schemes().size(); | |
| 653 ++i) { | |
| 654 if (url.SchemeIs( | |
| 655 file_system_options_.additional_allowed_schemes()[i].c_str())) | |
| 656 return true; | |
| 657 } | |
| 658 return false; | |
| 659 } | |
| 660 | |
| 661 ObfuscatedFileUtil* SandboxMountPointProvider::sandbox_sync_file_util() { | |
| 662 DCHECK(sandbox_file_util_.get()); | |
| 663 return static_cast<ObfuscatedFileUtil*>(sandbox_file_util_->sync_file_util()); | |
| 664 } | |
| 665 | |
| 666 // static | |
| 667 void SandboxMountPointProvider::InvalidateUsageCacheOnFileThread( | |
| 668 ObfuscatedFileUtil* file_util, | |
| 669 const GURL& origin, | |
| 670 FileSystemType type, | |
| 671 FileSystemUsageCache* usage_cache) { | |
| 672 base::PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 673 base::FilePath usage_cache_path = GetUsageCachePathForOriginAndType( | |
| 674 file_util, origin, type, &error); | |
| 675 if (error == base::PLATFORM_FILE_OK) | |
| 676 usage_cache->IncrementDirty(usage_cache_path); | |
| 677 } | |
| 678 | |
| 679 int64 SandboxMountPointProvider::RecalculateUsage(FileSystemContext* context, | |
| 680 const GURL& origin, | |
| 681 FileSystemType type) { | |
| 682 FileSystemOperationContext operation_context(context); | |
| 683 FileSystemURL url = context->CreateCrackedFileSystemURL( | |
| 684 origin, type, base::FilePath()); | |
| 685 scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator> enumerator( | |
| 686 sandbox_sync_file_util()->CreateFileEnumerator( | |
| 687 &operation_context, url, true)); | |
| 688 | |
| 689 base::FilePath file_path_each; | |
| 690 int64 usage = 0; | |
| 691 | |
| 692 while (!(file_path_each = enumerator->Next()).empty()) { | |
| 693 usage += enumerator->Size(); | |
| 694 usage += ObfuscatedFileUtil::ComputeFilePathCost(file_path_each); | |
| 695 } | |
| 696 | |
| 697 return usage; | |
| 698 } | |
| 699 | |
| 700 } // namespace fileapi | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 15442002:
Move FileAPI sandboxed filesystem related code from webkit/fileapi to webkit/browser/fileapi (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src