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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/obfuscated_file_util.h" | |
| 6 | |
| 7 #include <queue> | |
| 8 #include <string> | |
| 9 #include <vector> | |
| 10 | |
| 11 #include "base/file_util.h" | |
| 12 #include "base/format_macros.h" | |
| 13 #include "base/logging.h" | |
| 14 #include "base/message_loop.h" | |
| 15 #include "base/stl_util.h" | |
| 16 #include "base/stringprintf.h" | |
| 17 #include "base/strings/string_number_conversions.h" | |
| 18 #include "base/strings/sys_string_conversions.h" | |
| 19 #include "base/utf_string_conversions.h" | |
| 20 #include "googleurl/src/gurl.h" | |
| 21 #include "webkit/base/origin_url_conversions.h" | |
| 22 #include "webkit/fileapi/file_observers.h" | |
| 23 #include "webkit/fileapi/file_system_context.h" | |
| 24 #include "webkit/fileapi/file_system_operation_context.h" | |
| 25 #include "webkit/fileapi/file_system_url.h" | |
| 26 #include "webkit/fileapi/file_system_util.h" | |
| 27 #include "webkit/fileapi/native_file_util.h" | |
| 28 #include "webkit/fileapi/sandbox_mount_point_provider.h" | |
| 29 #include "webkit/fileapi/syncable/syncable_file_system_util.h" | |
| 30 #include "webkit/quota/quota_manager.h" | |
| 31 | |
| 32 // Example of various paths: | |
| 33 // void ObfuscatedFileUtil::DoSomething(const FileSystemURL& url) { | |
| 34 // base::FilePath virtual_path = url.path(); | |
| 35 // base::FilePath local_path = GetLocalFilePath(url); | |
| 36 // | |
| 37 // NativeFileUtil::DoSomething(local_path); | |
| 38 // file_util::DoAnother(local_path); | |
| 39 // } | |
| 40 | |
| 41 namespace fileapi { | |
| 42 | |
| 43 namespace { | |
| 44 | |
| 45 typedef SandboxDirectoryDatabase::FileId FileId; | |
| 46 typedef SandboxDirectoryDatabase::FileInfo FileInfo; | |
| 47 | |
| 48 const int64 kFlushDelaySeconds = 10 * 60; // 10 minutes | |
| 49 | |
| 50 void InitFileInfo( | |
| 51 SandboxDirectoryDatabase::FileInfo* file_info, | |
| 52 SandboxDirectoryDatabase::FileId parent_id, | |
| 53 const base::FilePath::StringType& file_name) { | |
| 54 DCHECK(file_info); | |
| 55 file_info->parent_id = parent_id; | |
| 56 file_info->name = file_name; | |
| 57 } | |
| 58 | |
| 59 // Costs computed as per crbug.com/86114, based on the LevelDB implementation of | |
| 60 // path storage under Linux. It's not clear if that will differ on Windows, on | |
| 61 // which base::FilePath uses wide chars [since they're converted to UTF-8 for st
orage | |
| 62 // anyway], but as long as the cost is high enough that one can't cheat on quota | |
| 63 // by storing data in paths, it doesn't need to be all that accurate. | |
| 64 const int64 kPathCreationQuotaCost = 146; // Bytes per inode, basically. | |
| 65 const int64 kPathByteQuotaCost = 2; // Bytes per byte of path length in UTF-8. | |
| 66 | |
| 67 int64 UsageForPath(size_t length) { | |
| 68 return kPathCreationQuotaCost + | |
| 69 static_cast<int64>(length) * kPathByteQuotaCost; | |
| 70 } | |
| 71 | |
| 72 bool AllocateQuota(FileSystemOperationContext* context, int64 growth) { | |
| 73 if (context->allowed_bytes_growth() == quota::QuotaManager::kNoLimit) | |
| 74 return true; | |
| 75 | |
| 76 int64 new_quota = context->allowed_bytes_growth() - growth; | |
| 77 if (growth > 0 && new_quota < 0) | |
| 78 return false; | |
| 79 context->set_allowed_bytes_growth(new_quota); | |
| 80 return true; | |
| 81 } | |
| 82 | |
| 83 void UpdateUsage( | |
| 84 FileSystemOperationContext* context, | |
| 85 const FileSystemURL& url, | |
| 86 int64 growth) { | |
| 87 context->update_observers()->Notify( | |
| 88 &FileUpdateObserver::OnUpdate, MakeTuple(url, growth)); | |
| 89 } | |
| 90 | |
| 91 void TouchDirectory(SandboxDirectoryDatabase* db, FileId dir_id) { | |
| 92 DCHECK(db); | |
| 93 if (!db->UpdateModificationTime(dir_id, base::Time::Now())) | |
| 94 NOTREACHED(); | |
| 95 } | |
| 96 | |
| 97 const base::FilePath::CharType kTemporaryDirectoryName[] = FILE_PATH_LITERAL("t"
); | |
| 98 const base::FilePath::CharType kPersistentDirectoryName[] = FILE_PATH_LITERAL("p
"); | |
| 99 const base::FilePath::CharType kSyncableDirectoryName[] = FILE_PATH_LITERAL("s")
; | |
| 100 | |
| 101 } // namespace | |
| 102 | |
| 103 using base::PlatformFile; | |
| 104 using base::PlatformFileError; | |
| 105 | |
| 106 class ObfuscatedFileEnumerator | |
| 107 : public FileSystemFileUtil::AbstractFileEnumerator { | |
| 108 public: | |
| 109 ObfuscatedFileEnumerator( | |
| 110 SandboxDirectoryDatabase* db, | |
| 111 FileSystemOperationContext* context, | |
| 112 ObfuscatedFileUtil* obfuscated_file_util, | |
| 113 const FileSystemURL& root_url, | |
| 114 bool recursive) | |
| 115 : db_(db), | |
| 116 context_(context), | |
| 117 obfuscated_file_util_(obfuscated_file_util), | |
| 118 origin_(root_url.origin()), | |
| 119 type_(root_url.type()), | |
| 120 recursive_(recursive), | |
| 121 current_file_id_(0) { | |
| 122 base::FilePath root_virtual_path = root_url.path(); | |
| 123 FileId file_id; | |
| 124 | |
| 125 if (!db_->GetFileWithPath(root_virtual_path, &file_id)) | |
| 126 return; | |
| 127 | |
| 128 FileRecord record = { file_id, root_virtual_path }; | |
| 129 recurse_queue_.push(record); | |
| 130 } | |
| 131 | |
| 132 virtual ~ObfuscatedFileEnumerator() {} | |
| 133 | |
| 134 virtual base::FilePath Next() OVERRIDE { | |
| 135 ProcessRecurseQueue(); | |
| 136 if (display_stack_.empty()) | |
| 137 return base::FilePath(); | |
| 138 | |
| 139 current_file_id_ = display_stack_.back(); | |
| 140 display_stack_.pop_back(); | |
| 141 | |
| 142 FileInfo file_info; | |
| 143 base::FilePath platform_file_path; | |
| 144 base::PlatformFileError error = | |
| 145 obfuscated_file_util_->GetFileInfoInternal( | |
| 146 db_, context_, origin_, type_, current_file_id_, | |
| 147 &file_info, ¤t_platform_file_info_, &platform_file_path); | |
| 148 if (error != base::PLATFORM_FILE_OK) | |
| 149 return Next(); | |
| 150 | |
| 151 base::FilePath virtual_path = | |
| 152 current_parent_virtual_path_.Append(file_info.name); | |
| 153 if (recursive_ && file_info.is_directory()) { | |
| 154 FileRecord record = { current_file_id_, virtual_path }; | |
| 155 recurse_queue_.push(record); | |
| 156 } | |
| 157 return virtual_path; | |
| 158 } | |
| 159 | |
| 160 virtual int64 Size() OVERRIDE { | |
| 161 return current_platform_file_info_.size; | |
| 162 } | |
| 163 | |
| 164 virtual base::Time LastModifiedTime() OVERRIDE { | |
| 165 return current_platform_file_info_.last_modified; | |
| 166 } | |
| 167 | |
| 168 virtual bool IsDirectory() OVERRIDE { | |
| 169 return current_platform_file_info_.is_directory; | |
| 170 } | |
| 171 | |
| 172 private: | |
| 173 typedef SandboxDirectoryDatabase::FileId FileId; | |
| 174 typedef SandboxDirectoryDatabase::FileInfo FileInfo; | |
| 175 | |
| 176 struct FileRecord { | |
| 177 FileId file_id; | |
| 178 base::FilePath virtual_path; | |
| 179 }; | |
| 180 | |
| 181 void ProcessRecurseQueue() { | |
| 182 while (display_stack_.empty() && !recurse_queue_.empty()) { | |
| 183 FileRecord entry = recurse_queue_.front(); | |
| 184 recurse_queue_.pop(); | |
| 185 if (!db_->ListChildren(entry.file_id, &display_stack_)) { | |
| 186 display_stack_.clear(); | |
| 187 return; | |
| 188 } | |
| 189 current_parent_virtual_path_ = entry.virtual_path; | |
| 190 } | |
| 191 } | |
| 192 | |
| 193 SandboxDirectoryDatabase* db_; | |
| 194 FileSystemOperationContext* context_; | |
| 195 ObfuscatedFileUtil* obfuscated_file_util_; | |
| 196 GURL origin_; | |
| 197 FileSystemType type_; | |
| 198 bool recursive_; | |
| 199 | |
| 200 std::queue<FileRecord> recurse_queue_; | |
| 201 std::vector<FileId> display_stack_; | |
| 202 base::FilePath current_parent_virtual_path_; | |
| 203 | |
| 204 FileId current_file_id_; | |
| 205 base::PlatformFileInfo current_platform_file_info_; | |
| 206 }; | |
| 207 | |
| 208 class ObfuscatedOriginEnumerator | |
| 209 : public ObfuscatedFileUtil::AbstractOriginEnumerator { | |
| 210 public: | |
| 211 typedef SandboxOriginDatabase::OriginRecord OriginRecord; | |
| 212 ObfuscatedOriginEnumerator( | |
| 213 SandboxOriginDatabase* origin_database, | |
| 214 const base::FilePath& base_file_path) | |
| 215 : base_file_path_(base_file_path) { | |
| 216 if (origin_database) | |
| 217 origin_database->ListAllOrigins(&origins_); | |
| 218 } | |
| 219 | |
| 220 virtual ~ObfuscatedOriginEnumerator() {} | |
| 221 | |
| 222 // Returns the next origin. Returns empty if there are no more origins. | |
| 223 virtual GURL Next() OVERRIDE { | |
| 224 OriginRecord record; | |
| 225 if (!origins_.empty()) { | |
| 226 record = origins_.back(); | |
| 227 origins_.pop_back(); | |
| 228 } | |
| 229 current_ = record; | |
| 230 return webkit_base::GetOriginURLFromIdentifier(UTF8ToUTF16(record.origin)); | |
| 231 } | |
| 232 | |
| 233 // Returns the current origin's information. | |
| 234 virtual bool HasFileSystemType(FileSystemType type) const OVERRIDE { | |
| 235 if (current_.path.empty()) | |
| 236 return false; | |
| 237 base::FilePath::StringType type_string = | |
| 238 ObfuscatedFileUtil::GetDirectoryNameForType(type); | |
| 239 if (type_string.empty()) { | |
| 240 NOTREACHED(); | |
| 241 return false; | |
| 242 } | |
| 243 base::FilePath path = base_file_path_.Append(current_.path).Append(type_stri
ng); | |
| 244 return file_util::DirectoryExists(path); | |
| 245 } | |
| 246 | |
| 247 private: | |
| 248 std::vector<OriginRecord> origins_; | |
| 249 OriginRecord current_; | |
| 250 base::FilePath base_file_path_; | |
| 251 }; | |
| 252 | |
| 253 ObfuscatedFileUtil::ObfuscatedFileUtil( | |
| 254 const base::FilePath& file_system_directory) | |
| 255 : file_system_directory_(file_system_directory) { | |
| 256 } | |
| 257 | |
| 258 ObfuscatedFileUtil::~ObfuscatedFileUtil() { | |
| 259 DropDatabases(); | |
| 260 } | |
| 261 | |
| 262 PlatformFileError ObfuscatedFileUtil::CreateOrOpen( | |
| 263 FileSystemOperationContext* context, | |
| 264 const FileSystemURL& url, int file_flags, | |
| 265 PlatformFile* file_handle, bool* created) { | |
| 266 PlatformFileError error = CreateOrOpenInternal(context, url, file_flags, | |
| 267 file_handle, created); | |
| 268 if (*file_handle != base::kInvalidPlatformFileValue && | |
| 269 file_flags & base::PLATFORM_FILE_WRITE && | |
| 270 context->quota_limit_type() == quota::kQuotaLimitTypeUnlimited) { | |
| 271 DCHECK_EQ(base::PLATFORM_FILE_OK, error); | |
| 272 DCHECK_EQ(kFileSystemTypePersistent, url.type()); | |
| 273 context->file_system_context()->GetQuotaUtil(url.type())-> | |
| 274 StickyInvalidateUsageCache(url.origin(), url.type()); | |
| 275 } | |
| 276 return error; | |
| 277 } | |
| 278 | |
| 279 PlatformFileError ObfuscatedFileUtil::Close( | |
| 280 FileSystemOperationContext* context, | |
| 281 base::PlatformFile file) { | |
| 282 return NativeFileUtil::Close(file); | |
| 283 } | |
| 284 | |
| 285 PlatformFileError ObfuscatedFileUtil::EnsureFileExists( | |
| 286 FileSystemOperationContext* context, | |
| 287 const FileSystemURL& url, | |
| 288 bool* created) { | |
| 289 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 290 url.origin(), url.type(), true); | |
| 291 if (!db) | |
| 292 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 293 | |
| 294 FileId file_id; | |
| 295 if (db->GetFileWithPath(url.path(), &file_id)) { | |
| 296 FileInfo file_info; | |
| 297 if (!db->GetFileInfo(file_id, &file_info)) { | |
| 298 NOTREACHED(); | |
| 299 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 300 } | |
| 301 if (file_info.is_directory()) | |
| 302 return base::PLATFORM_FILE_ERROR_NOT_A_FILE; | |
| 303 if (created) | |
| 304 *created = false; | |
| 305 return base::PLATFORM_FILE_OK; | |
| 306 } | |
| 307 FileId parent_id; | |
| 308 if (!db->GetFileWithPath(VirtualPath::DirName(url.path()), &parent_id)) | |
| 309 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 310 | |
| 311 FileInfo file_info; | |
| 312 InitFileInfo(&file_info, parent_id, | |
| 313 VirtualPath::BaseName(url.path()).value()); | |
| 314 | |
| 315 int64 growth = UsageForPath(file_info.name.size()); | |
| 316 if (!AllocateQuota(context, growth)) | |
| 317 return base::PLATFORM_FILE_ERROR_NO_SPACE; | |
| 318 PlatformFileError error = CreateFile( | |
| 319 context, base::FilePath(), url.origin(), url.type(), &file_info, 0, NULL); | |
| 320 if (created && base::PLATFORM_FILE_OK == error) { | |
| 321 *created = true; | |
| 322 UpdateUsage(context, url, growth); | |
| 323 context->change_observers()->Notify( | |
| 324 &FileChangeObserver::OnCreateFile, MakeTuple(url)); | |
| 325 } | |
| 326 return error; | |
| 327 } | |
| 328 | |
| 329 PlatformFileError ObfuscatedFileUtil::CreateDirectory( | |
| 330 FileSystemOperationContext* context, | |
| 331 const FileSystemURL& url, | |
| 332 bool exclusive, | |
| 333 bool recursive) { | |
| 334 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 335 url.origin(), url.type(), true); | |
| 336 if (!db) | |
| 337 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 338 | |
| 339 // TODO(kinuko): Remove this dirty hack when we fully support directory | |
| 340 // operations or clean up the code if we decided not to support directory | |
| 341 // operations. (http://crbug.com/161442) | |
| 342 if (url.type() == kFileSystemTypeSyncable && | |
| 343 !sync_file_system::IsSyncFSDirectoryOperationEnabled()) { | |
| 344 return base::PLATFORM_FILE_ERROR_INVALID_OPERATION; | |
| 345 } | |
| 346 | |
| 347 FileId file_id; | |
| 348 if (db->GetFileWithPath(url.path(), &file_id)) { | |
| 349 FileInfo file_info; | |
| 350 if (exclusive) | |
| 351 return base::PLATFORM_FILE_ERROR_EXISTS; | |
| 352 if (!db->GetFileInfo(file_id, &file_info)) { | |
| 353 NOTREACHED(); | |
| 354 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 355 } | |
| 356 if (!file_info.is_directory()) | |
| 357 return base::PLATFORM_FILE_ERROR_NOT_A_DIRECTORY; | |
| 358 return base::PLATFORM_FILE_OK; | |
| 359 } | |
| 360 | |
| 361 std::vector<base::FilePath::StringType> components; | |
| 362 VirtualPath::GetComponents(url.path(), &components); | |
| 363 FileId parent_id = 0; | |
| 364 size_t index; | |
| 365 for (index = 0; index < components.size(); ++index) { | |
| 366 base::FilePath::StringType name = components[index]; | |
| 367 if (name == FILE_PATH_LITERAL("/")) | |
| 368 continue; | |
| 369 if (!db->GetChildWithName(parent_id, name, &parent_id)) | |
| 370 break; | |
| 371 } | |
| 372 if (!recursive && components.size() - index > 1) | |
| 373 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 374 bool first = true; | |
| 375 for (; index < components.size(); ++index) { | |
| 376 FileInfo file_info; | |
| 377 file_info.name = components[index]; | |
| 378 if (file_info.name == FILE_PATH_LITERAL("/")) | |
| 379 continue; | |
| 380 file_info.modification_time = base::Time::Now(); | |
| 381 file_info.parent_id = parent_id; | |
| 382 int64 growth = UsageForPath(file_info.name.size()); | |
| 383 if (!AllocateQuota(context, growth)) | |
| 384 return base::PLATFORM_FILE_ERROR_NO_SPACE; | |
| 385 if (!db->AddFileInfo(file_info, &parent_id)) { | |
| 386 NOTREACHED(); | |
| 387 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 388 } | |
| 389 UpdateUsage(context, url, growth); | |
| 390 context->change_observers()->Notify( | |
| 391 &FileChangeObserver::OnCreateDirectory, MakeTuple(url)); | |
| 392 if (first) { | |
| 393 first = false; | |
| 394 TouchDirectory(db, file_info.parent_id); | |
| 395 } | |
| 396 } | |
| 397 return base::PLATFORM_FILE_OK; | |
| 398 } | |
| 399 | |
| 400 PlatformFileError ObfuscatedFileUtil::GetFileInfo( | |
| 401 FileSystemOperationContext* context, | |
| 402 const FileSystemURL& url, | |
| 403 base::PlatformFileInfo* file_info, | |
| 404 base::FilePath* platform_file_path) { | |
| 405 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 406 url.origin(), url.type(), false); | |
| 407 if (!db) | |
| 408 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 409 FileId file_id; | |
| 410 if (!db->GetFileWithPath(url.path(), &file_id)) | |
| 411 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 412 FileInfo local_info; | |
| 413 return GetFileInfoInternal(db, context, | |
| 414 url.origin(), url.type(), | |
| 415 file_id, &local_info, | |
| 416 file_info, platform_file_path); | |
| 417 } | |
| 418 | |
| 419 scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator> | |
| 420 ObfuscatedFileUtil::CreateFileEnumerator( | |
| 421 FileSystemOperationContext* context, | |
| 422 const FileSystemURL& root_url) { | |
| 423 return CreateFileEnumerator(context, root_url, false /* recursive */); | |
| 424 } | |
| 425 | |
| 426 PlatformFileError ObfuscatedFileUtil::GetLocalFilePath( | |
| 427 FileSystemOperationContext* context, | |
| 428 const FileSystemURL& url, | |
| 429 base::FilePath* local_path) { | |
| 430 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 431 url.origin(), url.type(), false); | |
| 432 if (!db) | |
| 433 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 434 FileId file_id; | |
| 435 if (!db->GetFileWithPath(url.path(), &file_id)) | |
| 436 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 437 FileInfo file_info; | |
| 438 if (!db->GetFileInfo(file_id, &file_info) || file_info.is_directory()) { | |
| 439 NOTREACHED(); | |
| 440 // Directories have no local file path. | |
| 441 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 442 } | |
| 443 *local_path = DataPathToLocalPath( | |
| 444 url.origin(), url.type(), file_info.data_path); | |
| 445 | |
| 446 if (local_path->empty()) | |
| 447 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 448 return base::PLATFORM_FILE_OK; | |
| 449 } | |
| 450 | |
| 451 PlatformFileError ObfuscatedFileUtil::Touch( | |
| 452 FileSystemOperationContext* context, | |
| 453 const FileSystemURL& url, | |
| 454 const base::Time& last_access_time, | |
| 455 const base::Time& last_modified_time) { | |
| 456 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 457 url.origin(), url.type(), false); | |
| 458 if (!db) | |
| 459 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 460 FileId file_id; | |
| 461 if (!db->GetFileWithPath(url.path(), &file_id)) | |
| 462 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 463 | |
| 464 FileInfo file_info; | |
| 465 if (!db->GetFileInfo(file_id, &file_info)) { | |
| 466 NOTREACHED(); | |
| 467 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 468 } | |
| 469 if (file_info.is_directory()) { | |
| 470 if (!db->UpdateModificationTime(file_id, last_modified_time)) | |
| 471 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 472 return base::PLATFORM_FILE_OK; | |
| 473 } | |
| 474 base::FilePath local_path = DataPathToLocalPath( | |
| 475 url.origin(), url.type(), file_info.data_path); | |
| 476 return NativeFileUtil::Touch( | |
| 477 local_path, last_access_time, last_modified_time); | |
| 478 } | |
| 479 | |
| 480 PlatformFileError ObfuscatedFileUtil::Truncate( | |
| 481 FileSystemOperationContext* context, | |
| 482 const FileSystemURL& url, | |
| 483 int64 length) { | |
| 484 base::PlatformFileInfo file_info; | |
| 485 base::FilePath local_path; | |
| 486 base::PlatformFileError error = | |
| 487 GetFileInfo(context, url, &file_info, &local_path); | |
| 488 if (error != base::PLATFORM_FILE_OK) | |
| 489 return error; | |
| 490 | |
| 491 int64 growth = length - file_info.size; | |
| 492 if (!AllocateQuota(context, growth)) | |
| 493 return base::PLATFORM_FILE_ERROR_NO_SPACE; | |
| 494 error = NativeFileUtil::Truncate(local_path, length); | |
| 495 if (error == base::PLATFORM_FILE_OK) { | |
| 496 UpdateUsage(context, url, growth); | |
| 497 context->change_observers()->Notify( | |
| 498 &FileChangeObserver::OnModifyFile, MakeTuple(url)); | |
| 499 } | |
| 500 return error; | |
| 501 } | |
| 502 | |
| 503 PlatformFileError ObfuscatedFileUtil::CopyOrMoveFile( | |
| 504 FileSystemOperationContext* context, | |
| 505 const FileSystemURL& src_url, | |
| 506 const FileSystemURL& dest_url, | |
| 507 bool copy) { | |
| 508 // Cross-filesystem copies and moves should be handled via CopyInForeignFile. | |
| 509 DCHECK(src_url.origin() == dest_url.origin()); | |
| 510 DCHECK(src_url.type() == dest_url.type()); | |
| 511 | |
| 512 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 513 src_url.origin(), src_url.type(), true); | |
| 514 if (!db) | |
| 515 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 516 | |
| 517 FileId src_file_id; | |
| 518 if (!db->GetFileWithPath(src_url.path(), &src_file_id)) | |
| 519 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 520 | |
| 521 FileId dest_file_id; | |
| 522 bool overwrite = db->GetFileWithPath(dest_url.path(), | |
| 523 &dest_file_id); | |
| 524 | |
| 525 FileInfo src_file_info; | |
| 526 base::PlatformFileInfo src_platform_file_info; | |
| 527 base::FilePath src_local_path; | |
| 528 base::PlatformFileError error = GetFileInfoInternal( | |
| 529 db, context, src_url.origin(), src_url.type(), src_file_id, | |
| 530 &src_file_info, &src_platform_file_info, &src_local_path); | |
| 531 if (error != base::PLATFORM_FILE_OK) | |
| 532 return error; | |
| 533 if (src_file_info.is_directory()) | |
| 534 return base::PLATFORM_FILE_ERROR_NOT_A_FILE; | |
| 535 | |
| 536 FileInfo dest_file_info; | |
| 537 base::PlatformFileInfo dest_platform_file_info; // overwrite case only | |
| 538 base::FilePath dest_local_path; // overwrite case only | |
| 539 if (overwrite) { | |
| 540 base::PlatformFileError error = GetFileInfoInternal( | |
| 541 db, context, dest_url.origin(), dest_url.type(), dest_file_id, | |
| 542 &dest_file_info, &dest_platform_file_info, &dest_local_path); | |
| 543 if (error == base::PLATFORM_FILE_ERROR_NOT_FOUND) | |
| 544 overwrite = false; // fallback to non-overwrite case | |
| 545 else if (error != base::PLATFORM_FILE_OK) | |
| 546 return error; | |
| 547 else if (dest_file_info.is_directory()) | |
| 548 return base::PLATFORM_FILE_ERROR_INVALID_OPERATION; | |
| 549 } | |
| 550 if (!overwrite) { | |
| 551 FileId dest_parent_id; | |
| 552 if (!db->GetFileWithPath(VirtualPath::DirName(dest_url.path()), | |
| 553 &dest_parent_id)) { | |
| 554 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 555 } | |
| 556 | |
| 557 dest_file_info = src_file_info; | |
| 558 dest_file_info.parent_id = dest_parent_id; | |
| 559 dest_file_info.name = | |
| 560 VirtualPath::BaseName(dest_url.path()).value(); | |
| 561 } | |
| 562 | |
| 563 int64 growth = 0; | |
| 564 if (copy) | |
| 565 growth += src_platform_file_info.size; | |
| 566 else | |
| 567 growth -= UsageForPath(src_file_info.name.size()); | |
| 568 if (overwrite) | |
| 569 growth -= dest_platform_file_info.size; | |
| 570 else | |
| 571 growth += UsageForPath(dest_file_info.name.size()); | |
| 572 if (!AllocateQuota(context, growth)) | |
| 573 return base::PLATFORM_FILE_ERROR_NO_SPACE; | |
| 574 | |
| 575 /* | |
| 576 * Copy-with-overwrite | |
| 577 * Just overwrite data file | |
| 578 * Copy-without-overwrite | |
| 579 * Copy backing file | |
| 580 * Create new metadata pointing to new backing file. | |
| 581 * Move-with-overwrite | |
| 582 * transaction: | |
| 583 * Remove source entry. | |
| 584 * Point target entry to source entry's backing file. | |
| 585 * Delete target entry's old backing file | |
| 586 * Move-without-overwrite | |
| 587 * Just update metadata | |
| 588 */ | |
| 589 error = base::PLATFORM_FILE_ERROR_FAILED; | |
| 590 if (copy) { | |
| 591 if (overwrite) { | |
| 592 error = NativeFileUtil::CopyOrMoveFile( | |
| 593 src_local_path, | |
| 594 dest_local_path, | |
| 595 true /* copy */); | |
| 596 } else { // non-overwrite | |
| 597 error = CreateFile(context, src_local_path, | |
| 598 dest_url.origin(), dest_url.type(), | |
| 599 &dest_file_info, 0, NULL); | |
| 600 } | |
| 601 } else { | |
| 602 if (overwrite) { | |
| 603 if (db->OverwritingMoveFile(src_file_id, dest_file_id)) { | |
| 604 if (base::PLATFORM_FILE_OK != | |
| 605 NativeFileUtil::DeleteFile(dest_local_path)) | |
| 606 LOG(WARNING) << "Leaked a backing file."; | |
| 607 error = base::PLATFORM_FILE_OK; | |
| 608 } else { | |
| 609 error = base::PLATFORM_FILE_ERROR_FAILED; | |
| 610 } | |
| 611 } else { // non-overwrite | |
| 612 if (db->UpdateFileInfo(src_file_id, dest_file_info)) | |
| 613 error = base::PLATFORM_FILE_OK; | |
| 614 else | |
| 615 error = base::PLATFORM_FILE_ERROR_FAILED; | |
| 616 } | |
| 617 } | |
| 618 | |
| 619 if (error != base::PLATFORM_FILE_OK) | |
| 620 return error; | |
| 621 | |
| 622 if (overwrite) { | |
| 623 context->change_observers()->Notify( | |
| 624 &FileChangeObserver::OnModifyFile, | |
| 625 MakeTuple(dest_url)); | |
| 626 } else { | |
| 627 context->change_observers()->Notify( | |
| 628 &FileChangeObserver::OnCreateFileFrom, | |
| 629 MakeTuple(dest_url, src_url)); | |
| 630 } | |
| 631 | |
| 632 if (!copy) { | |
| 633 context->change_observers()->Notify( | |
| 634 &FileChangeObserver::OnRemoveFile, MakeTuple(src_url)); | |
| 635 TouchDirectory(db, src_file_info.parent_id); | |
| 636 } | |
| 637 | |
| 638 TouchDirectory(db, dest_file_info.parent_id); | |
| 639 | |
| 640 UpdateUsage(context, dest_url, growth); | |
| 641 return error; | |
| 642 } | |
| 643 | |
| 644 PlatformFileError ObfuscatedFileUtil::CopyInForeignFile( | |
| 645 FileSystemOperationContext* context, | |
| 646 const base::FilePath& src_file_path, | |
| 647 const FileSystemURL& dest_url) { | |
| 648 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 649 dest_url.origin(), dest_url.type(), true); | |
| 650 if (!db) | |
| 651 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 652 | |
| 653 base::PlatformFileInfo src_platform_file_info; | |
| 654 if (!file_util::GetFileInfo(src_file_path, &src_platform_file_info)) | |
| 655 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 656 | |
| 657 FileId dest_file_id; | |
| 658 bool overwrite = db->GetFileWithPath(dest_url.path(), | |
| 659 &dest_file_id); | |
| 660 | |
| 661 FileInfo dest_file_info; | |
| 662 base::PlatformFileInfo dest_platform_file_info; // overwrite case only | |
| 663 if (overwrite) { | |
| 664 base::FilePath dest_local_path; | |
| 665 base::PlatformFileError error = GetFileInfoInternal( | |
| 666 db, context, dest_url.origin(), dest_url.type(), dest_file_id, | |
| 667 &dest_file_info, &dest_platform_file_info, &dest_local_path); | |
| 668 if (error == base::PLATFORM_FILE_ERROR_NOT_FOUND) | |
| 669 overwrite = false; // fallback to non-overwrite case | |
| 670 else if (error != base::PLATFORM_FILE_OK) | |
| 671 return error; | |
| 672 else if (dest_file_info.is_directory()) | |
| 673 return base::PLATFORM_FILE_ERROR_INVALID_OPERATION; | |
| 674 } | |
| 675 if (!overwrite) { | |
| 676 FileId dest_parent_id; | |
| 677 if (!db->GetFileWithPath(VirtualPath::DirName(dest_url.path()), | |
| 678 &dest_parent_id)) { | |
| 679 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 680 } | |
| 681 if (!dest_file_info.is_directory()) | |
| 682 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 683 InitFileInfo(&dest_file_info, dest_parent_id, | |
| 684 VirtualPath::BaseName(dest_url.path()).value()); | |
| 685 } | |
| 686 | |
| 687 int64 growth = src_platform_file_info.size; | |
| 688 if (overwrite) | |
| 689 growth -= dest_platform_file_info.size; | |
| 690 else | |
| 691 growth += UsageForPath(dest_file_info.name.size()); | |
| 692 if (!AllocateQuota(context, growth)) | |
| 693 return base::PLATFORM_FILE_ERROR_NO_SPACE; | |
| 694 | |
| 695 base::PlatformFileError error; | |
| 696 if (overwrite) { | |
| 697 base::FilePath dest_local_path = DataPathToLocalPath( | |
| 698 dest_url.origin(), dest_url.type(), dest_file_info.data_path); | |
| 699 error = NativeFileUtil::CopyOrMoveFile( | |
| 700 src_file_path, dest_local_path, true); | |
| 701 } else { | |
| 702 error = CreateFile(context, src_file_path, | |
| 703 dest_url.origin(), dest_url.type(), | |
| 704 &dest_file_info, 0, NULL); | |
| 705 } | |
| 706 | |
| 707 if (error != base::PLATFORM_FILE_OK) | |
| 708 return error; | |
| 709 | |
| 710 if (overwrite) { | |
| 711 context->change_observers()->Notify( | |
| 712 &FileChangeObserver::OnModifyFile, MakeTuple(dest_url)); | |
| 713 } else { | |
| 714 context->change_observers()->Notify( | |
| 715 &FileChangeObserver::OnCreateFile, MakeTuple(dest_url)); | |
| 716 } | |
| 717 | |
| 718 UpdateUsage(context, dest_url, growth); | |
| 719 TouchDirectory(db, dest_file_info.parent_id); | |
| 720 return base::PLATFORM_FILE_OK; | |
| 721 } | |
| 722 | |
| 723 PlatformFileError ObfuscatedFileUtil::DeleteFile( | |
| 724 FileSystemOperationContext* context, | |
| 725 const FileSystemURL& url) { | |
| 726 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 727 url.origin(), url.type(), true); | |
| 728 if (!db) | |
| 729 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 730 FileId file_id; | |
| 731 if (!db->GetFileWithPath(url.path(), &file_id)) | |
| 732 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 733 | |
| 734 FileInfo file_info; | |
| 735 base::PlatformFileInfo platform_file_info; | |
| 736 base::FilePath local_path; | |
| 737 base::PlatformFileError error = GetFileInfoInternal( | |
| 738 db, context, url.origin(), url.type(), file_id, | |
| 739 &file_info, &platform_file_info, &local_path); | |
| 740 if (error != base::PLATFORM_FILE_ERROR_NOT_FOUND && | |
| 741 error != base::PLATFORM_FILE_OK) | |
| 742 return error; | |
| 743 | |
| 744 if (file_info.is_directory()) | |
| 745 return base::PLATFORM_FILE_ERROR_NOT_A_FILE; | |
| 746 | |
| 747 int64 growth = -UsageForPath(file_info.name.size()) - platform_file_info.size; | |
| 748 AllocateQuota(context, growth); | |
| 749 if (!db->RemoveFileInfo(file_id)) { | |
| 750 NOTREACHED(); | |
| 751 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 752 } | |
| 753 UpdateUsage(context, url, growth); | |
| 754 TouchDirectory(db, file_info.parent_id); | |
| 755 | |
| 756 context->change_observers()->Notify( | |
| 757 &FileChangeObserver::OnRemoveFile, MakeTuple(url)); | |
| 758 | |
| 759 if (error == base::PLATFORM_FILE_ERROR_NOT_FOUND) | |
| 760 return base::PLATFORM_FILE_OK; | |
| 761 | |
| 762 error = NativeFileUtil::DeleteFile(local_path); | |
| 763 if (base::PLATFORM_FILE_OK != error) | |
| 764 LOG(WARNING) << "Leaked a backing file."; | |
| 765 return base::PLATFORM_FILE_OK; | |
| 766 } | |
| 767 | |
| 768 PlatformFileError ObfuscatedFileUtil::DeleteDirectory( | |
| 769 FileSystemOperationContext* context, | |
| 770 const FileSystemURL& url) { | |
| 771 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 772 url.origin(), url.type(), true); | |
| 773 if (!db) | |
| 774 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 775 | |
| 776 FileId file_id; | |
| 777 if (!db->GetFileWithPath(url.path(), &file_id)) | |
| 778 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 779 FileInfo file_info; | |
| 780 if (!db->GetFileInfo(file_id, &file_info)) { | |
| 781 NOTREACHED(); | |
| 782 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 783 } | |
| 784 if (!file_info.is_directory()) | |
| 785 return base::PLATFORM_FILE_ERROR_NOT_A_DIRECTORY; | |
| 786 if (!db->RemoveFileInfo(file_id)) | |
| 787 return base::PLATFORM_FILE_ERROR_NOT_EMPTY; | |
| 788 int64 growth = -UsageForPath(file_info.name.size()); | |
| 789 AllocateQuota(context, growth); | |
| 790 UpdateUsage(context, url, growth); | |
| 791 TouchDirectory(db, file_info.parent_id); | |
| 792 context->change_observers()->Notify( | |
| 793 &FileChangeObserver::OnRemoveDirectory, MakeTuple(url)); | |
| 794 return base::PLATFORM_FILE_OK; | |
| 795 } | |
| 796 | |
| 797 webkit_blob::ScopedFile ObfuscatedFileUtil::CreateSnapshotFile( | |
| 798 FileSystemOperationContext* context, | |
| 799 const FileSystemURL& url, | |
| 800 base::PlatformFileError* error, | |
| 801 base::PlatformFileInfo* file_info, | |
| 802 base::FilePath* platform_path) { | |
| 803 // We're just returning the local file information. | |
| 804 *error = GetFileInfo(context, url, file_info, platform_path); | |
| 805 if (*error == base::PLATFORM_FILE_OK && file_info->is_directory) { | |
| 806 *file_info = base::PlatformFileInfo(); | |
| 807 *error = base::PLATFORM_FILE_ERROR_NOT_A_FILE; | |
| 808 } | |
| 809 return webkit_blob::ScopedFile(); | |
| 810 } | |
| 811 | |
| 812 scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator> | |
| 813 ObfuscatedFileUtil::CreateFileEnumerator( | |
| 814 FileSystemOperationContext* context, | |
| 815 const FileSystemURL& root_url, | |
| 816 bool recursive) { | |
| 817 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 818 root_url.origin(), root_url.type(), false); | |
| 819 if (!db) { | |
| 820 return scoped_ptr<AbstractFileEnumerator>(new EmptyFileEnumerator()); | |
| 821 } | |
| 822 return scoped_ptr<AbstractFileEnumerator>( | |
| 823 new ObfuscatedFileEnumerator(db, context, this, root_url, recursive)); | |
| 824 } | |
| 825 | |
| 826 bool ObfuscatedFileUtil::IsDirectoryEmpty( | |
| 827 FileSystemOperationContext* context, | |
| 828 const FileSystemURL& url) { | |
| 829 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 830 url.origin(), url.type(), false); | |
| 831 if (!db) | |
| 832 return true; // Not a great answer, but it's what others do. | |
| 833 FileId file_id; | |
| 834 if (!db->GetFileWithPath(url.path(), &file_id)) | |
| 835 return true; // Ditto. | |
| 836 FileInfo file_info; | |
| 837 if (!db->GetFileInfo(file_id, &file_info)) { | |
| 838 DCHECK(!file_id); | |
| 839 // It's the root directory and the database hasn't been initialized yet. | |
| 840 return true; | |
| 841 } | |
| 842 if (!file_info.is_directory()) | |
| 843 return true; | |
| 844 std::vector<FileId> children; | |
| 845 // TODO(ericu): This could easily be made faster with help from the database. | |
| 846 if (!db->ListChildren(file_id, &children)) | |
| 847 return true; | |
| 848 return children.empty(); | |
| 849 } | |
| 850 | |
| 851 base::FilePath ObfuscatedFileUtil::GetDirectoryForOriginAndType( | |
| 852 const GURL& origin, | |
| 853 FileSystemType type, | |
| 854 bool create, | |
| 855 base::PlatformFileError* error_code) { | |
| 856 base::FilePath origin_dir = GetDirectoryForOrigin(origin, create, error_code); | |
| 857 if (origin_dir.empty()) | |
| 858 return base::FilePath(); | |
| 859 base::FilePath::StringType type_string = GetDirectoryNameForType(type); | |
| 860 if (type_string.empty()) { | |
| 861 LOG(WARNING) << "Unknown filesystem type requested:" << type; | |
| 862 | |
| 863 if (error_code) | |
| 864 *error_code = base::PLATFORM_FILE_ERROR_INVALID_URL; | |
| 865 return base::FilePath(); | |
| 866 } | |
| 867 base::FilePath path = origin_dir.Append(type_string); | |
| 868 base::PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 869 if (!file_util::DirectoryExists(path) && | |
| 870 (!create || !file_util::CreateDirectory(path))) { | |
| 871 error = create ? | |
| 872 base::PLATFORM_FILE_ERROR_FAILED : | |
| 873 base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 874 } | |
| 875 | |
| 876 if (error_code) | |
| 877 *error_code = error; | |
| 878 return path; | |
| 879 } | |
| 880 | |
| 881 bool ObfuscatedFileUtil::DeleteDirectoryForOriginAndType( | |
| 882 const GURL& origin, FileSystemType type) { | |
| 883 base::PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 884 base::FilePath origin_type_path = GetDirectoryForOriginAndType(origin, type, f
alse, | |
| 885 &error); | |
| 886 if (origin_type_path.empty()) | |
| 887 return true; | |
| 888 | |
| 889 if (error != base::PLATFORM_FILE_ERROR_NOT_FOUND) { | |
| 890 // TODO(dmikurube): Consider the return value of DestroyDirectoryDatabase. | |
| 891 // We ignore its error now since 1) it doesn't matter the final result, and | |
| 892 // 2) it always returns false in Windows because of LevelDB's | |
| 893 // implementation. | |
| 894 // Information about failure would be useful for debugging. | |
| 895 DestroyDirectoryDatabase(origin, type); | |
| 896 if (!file_util::Delete(origin_type_path, true /* recursive */)) | |
| 897 return false; | |
| 898 } | |
| 899 | |
| 900 base::FilePath origin_path = VirtualPath::DirName(origin_type_path); | |
| 901 DCHECK_EQ(origin_path.value(), | |
| 902 GetDirectoryForOrigin(origin, false, NULL).value()); | |
| 903 | |
| 904 // At this point we are sure we had successfully deleted the origin/type | |
| 905 // directory (i.e. we're ready to just return true). | |
| 906 // See if we have other directories in this origin directory. | |
| 907 std::vector<FileSystemType> other_types; | |
| 908 if (type != kFileSystemTypeTemporary) | |
| 909 other_types.push_back(kFileSystemTypeTemporary); | |
| 910 if (type != kFileSystemTypePersistent) | |
| 911 other_types.push_back(kFileSystemTypePersistent); | |
| 912 if (type != kFileSystemTypeSyncable) | |
| 913 other_types.push_back(kFileSystemTypeSyncable); | |
| 914 | |
| 915 for (size_t i = 0; i < other_types.size(); ++i) { | |
| 916 if (file_util::DirectoryExists( | |
| 917 origin_path.Append(GetDirectoryNameForType(other_types[i])))) { | |
| 918 // Other type's directory exists; just return true here. | |
| 919 return true; | |
| 920 } | |
| 921 } | |
| 922 | |
| 923 // No other directories seem exist. Try deleting the entire origin directory. | |
| 924 InitOriginDatabase(false); | |
| 925 if (origin_database_) { | |
| 926 origin_database_->RemovePathForOrigin( | |
| 927 UTF16ToUTF8(webkit_base::GetOriginIdentifierFromURL(origin))); | |
| 928 } | |
| 929 if (!file_util::Delete(origin_path, true /* recursive */)) | |
| 930 return false; | |
| 931 | |
| 932 return true; | |
| 933 } | |
| 934 | |
| 935 // static | |
| 936 base::FilePath::StringType ObfuscatedFileUtil::GetDirectoryNameForType( | |
| 937 FileSystemType type) { | |
| 938 switch (type) { | |
| 939 case kFileSystemTypeTemporary: | |
| 940 return kTemporaryDirectoryName; | |
| 941 case kFileSystemTypePersistent: | |
| 942 return kPersistentDirectoryName; | |
| 943 case kFileSystemTypeSyncable: | |
| 944 return kSyncableDirectoryName; | |
| 945 case kFileSystemTypeUnknown: | |
| 946 default: | |
| 947 return base::FilePath::StringType(); | |
| 948 } | |
| 949 } | |
| 950 | |
| 951 ObfuscatedFileUtil::AbstractOriginEnumerator* | |
| 952 ObfuscatedFileUtil::CreateOriginEnumerator() { | |
| 953 std::vector<SandboxOriginDatabase::OriginRecord> origins; | |
| 954 | |
| 955 InitOriginDatabase(false); | |
| 956 return new ObfuscatedOriginEnumerator( | |
| 957 origin_database_.get(), file_system_directory_); | |
| 958 } | |
| 959 | |
| 960 bool ObfuscatedFileUtil::DestroyDirectoryDatabase( | |
| 961 const GURL& origin, FileSystemType type) { | |
| 962 std::string type_string = GetFileSystemTypeString(type); | |
| 963 if (type_string.empty()) { | |
| 964 LOG(WARNING) << "Unknown filesystem type requested:" << type; | |
| 965 return true; | |
| 966 } | |
| 967 std::string key = | |
| 968 UTF16ToUTF8(webkit_base::GetOriginIdentifierFromURL(origin)) + | |
| 969 type_string; | |
| 970 DirectoryMap::iterator iter = directories_.find(key); | |
| 971 if (iter != directories_.end()) { | |
| 972 SandboxDirectoryDatabase* database = iter->second; | |
| 973 directories_.erase(iter); | |
| 974 delete database; | |
| 975 } | |
| 976 | |
| 977 PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 978 base::FilePath path = GetDirectoryForOriginAndType(origin, type, false, &error
); | |
| 979 if (path.empty() || error == base::PLATFORM_FILE_ERROR_NOT_FOUND) | |
| 980 return true; | |
| 981 return SandboxDirectoryDatabase::DestroyDatabase(path); | |
| 982 } | |
| 983 | |
| 984 // static | |
| 985 int64 ObfuscatedFileUtil::ComputeFilePathCost(const base::FilePath& path) { | |
| 986 return UsageForPath(VirtualPath::BaseName(path).value().size()); | |
| 987 } | |
| 988 | |
| 989 PlatformFileError ObfuscatedFileUtil::GetFileInfoInternal( | |
| 990 SandboxDirectoryDatabase* db, | |
| 991 FileSystemOperationContext* context, | |
| 992 const GURL& origin, | |
| 993 FileSystemType type, | |
| 994 FileId file_id, | |
| 995 FileInfo* local_info, | |
| 996 base::PlatformFileInfo* file_info, | |
| 997 base::FilePath* platform_file_path) { | |
| 998 DCHECK(db); | |
| 999 DCHECK(context); | |
| 1000 DCHECK(file_info); | |
| 1001 DCHECK(platform_file_path); | |
| 1002 | |
| 1003 if (!db->GetFileInfo(file_id, local_info)) { | |
| 1004 NOTREACHED(); | |
| 1005 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 1006 } | |
| 1007 | |
| 1008 if (local_info->is_directory()) { | |
| 1009 file_info->size = 0; | |
| 1010 file_info->is_directory = true; | |
| 1011 file_info->is_symbolic_link = false; | |
| 1012 file_info->last_modified = local_info->modification_time; | |
| 1013 *platform_file_path = base::FilePath(); | |
| 1014 // We don't fill in ctime or atime. | |
| 1015 return base::PLATFORM_FILE_OK; | |
| 1016 } | |
| 1017 if (local_info->data_path.empty()) | |
| 1018 return base::PLATFORM_FILE_ERROR_INVALID_OPERATION; | |
| 1019 base::FilePath local_path = DataPathToLocalPath( | |
| 1020 origin, type, local_info->data_path); | |
| 1021 base::PlatformFileError error = NativeFileUtil::GetFileInfo( | |
| 1022 local_path, file_info); | |
| 1023 // We should not follow symbolic links in sandboxed file system. | |
| 1024 if (file_util::IsLink(local_path)) { | |
| 1025 LOG(WARNING) << "Found a symbolic file."; | |
| 1026 error = base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 1027 } | |
| 1028 if (error == base::PLATFORM_FILE_OK) { | |
| 1029 *platform_file_path = local_path; | |
| 1030 } else if (error == base::PLATFORM_FILE_ERROR_NOT_FOUND) { | |
| 1031 LOG(WARNING) << "Lost a backing file."; | |
| 1032 InvalidateUsageCache(context, origin, type); | |
| 1033 if (!db->RemoveFileInfo(file_id)) | |
| 1034 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 1035 } | |
| 1036 return error; | |
| 1037 } | |
| 1038 | |
| 1039 PlatformFileError ObfuscatedFileUtil::CreateFile( | |
| 1040 FileSystemOperationContext* context, | |
| 1041 const base::FilePath& src_file_path, | |
| 1042 const GURL& dest_origin, | |
| 1043 FileSystemType dest_type, | |
| 1044 FileInfo* dest_file_info, int file_flags, PlatformFile* handle) { | |
| 1045 if (handle) | |
| 1046 *handle = base::kInvalidPlatformFileValue; | |
| 1047 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 1048 dest_origin, dest_type, true); | |
| 1049 | |
| 1050 PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 1051 base::FilePath root = GetDirectoryForOriginAndType(dest_origin, dest_type, fal
se, | |
| 1052 &error); | |
| 1053 if (error != base::PLATFORM_FILE_OK) | |
| 1054 return error; | |
| 1055 | |
| 1056 base::FilePath dest_local_path; | |
| 1057 error = GenerateNewLocalPath(db, context, dest_origin, dest_type, | |
| 1058 &dest_local_path); | |
| 1059 if (error != base::PLATFORM_FILE_OK) | |
| 1060 return error; | |
| 1061 | |
| 1062 bool created = false; | |
| 1063 if (!src_file_path.empty()) { | |
| 1064 DCHECK(!file_flags); | |
| 1065 DCHECK(!handle); | |
| 1066 error = NativeFileUtil::CopyOrMoveFile( | |
| 1067 src_file_path, dest_local_path, true /* copy */); | |
| 1068 created = true; | |
| 1069 } else { | |
| 1070 if (file_util::PathExists(dest_local_path)) { | |
| 1071 if (!file_util::Delete(dest_local_path, true /* recursive */)) { | |
| 1072 NOTREACHED(); | |
| 1073 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 1074 } | |
| 1075 LOG(WARNING) << "A stray file detected"; | |
| 1076 InvalidateUsageCache(context, dest_origin, dest_type); | |
| 1077 } | |
| 1078 | |
| 1079 if (handle) { | |
| 1080 error = NativeFileUtil::CreateOrOpen( | |
| 1081 dest_local_path, file_flags, handle, &created); | |
| 1082 // If this succeeds, we must close handle on any subsequent error. | |
| 1083 } else { | |
| 1084 DCHECK(!file_flags); // file_flags is only used by CreateOrOpen. | |
| 1085 error = NativeFileUtil::EnsureFileExists(dest_local_path, &created); | |
| 1086 } | |
| 1087 } | |
| 1088 if (error != base::PLATFORM_FILE_OK) | |
| 1089 return error; | |
| 1090 | |
| 1091 if (!created) { | |
| 1092 NOTREACHED(); | |
| 1093 if (handle) { | |
| 1094 DCHECK_NE(base::kInvalidPlatformFileValue, *handle); | |
| 1095 base::ClosePlatformFile(*handle); | |
| 1096 file_util::Delete(dest_local_path, false /* recursive */); | |
| 1097 } | |
| 1098 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 1099 } | |
| 1100 | |
| 1101 // This removes the root, including the trailing slash, leaving a relative | |
| 1102 // path. | |
| 1103 dest_file_info->data_path = base::FilePath( | |
| 1104 dest_local_path.value().substr(root.value().length() + 1)); | |
| 1105 | |
| 1106 FileId file_id; | |
| 1107 if (!db->AddFileInfo(*dest_file_info, &file_id)) { | |
| 1108 if (handle) { | |
| 1109 DCHECK_NE(base::kInvalidPlatformFileValue, *handle); | |
| 1110 base::ClosePlatformFile(*handle); | |
| 1111 } | |
| 1112 file_util::Delete(dest_local_path, false /* recursive */); | |
| 1113 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 1114 } | |
| 1115 TouchDirectory(db, dest_file_info->parent_id); | |
| 1116 | |
| 1117 return base::PLATFORM_FILE_OK; | |
| 1118 } | |
| 1119 | |
| 1120 base::FilePath ObfuscatedFileUtil::DataPathToLocalPath( | |
| 1121 const GURL& origin, FileSystemType type, const base::FilePath& data_path) { | |
| 1122 PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 1123 base::FilePath root = GetDirectoryForOriginAndType(origin, type, false, &error
); | |
| 1124 if (error != base::PLATFORM_FILE_OK) | |
| 1125 return base::FilePath(); | |
| 1126 return root.Append(data_path); | |
| 1127 } | |
| 1128 | |
| 1129 // TODO(ericu): How to do the whole validation-without-creation thing? | |
| 1130 // We may not have quota even to create the database. | |
| 1131 // Ah, in that case don't even get here? | |
| 1132 // Still doesn't answer the quota issue, though. | |
| 1133 SandboxDirectoryDatabase* ObfuscatedFileUtil::GetDirectoryDatabase( | |
| 1134 const GURL& origin, FileSystemType type, bool create) { | |
| 1135 std::string type_string = GetFileSystemTypeString(type); | |
| 1136 if (type_string.empty()) { | |
| 1137 LOG(WARNING) << "Unknown filesystem type requested:" << type; | |
| 1138 return NULL; | |
| 1139 } | |
| 1140 std::string key = | |
| 1141 UTF16ToUTF8(webkit_base::GetOriginIdentifierFromURL(origin)) + | |
| 1142 type_string; | |
| 1143 DirectoryMap::iterator iter = directories_.find(key); | |
| 1144 if (iter != directories_.end()) { | |
| 1145 MarkUsed(); | |
| 1146 return iter->second; | |
| 1147 } | |
| 1148 | |
| 1149 PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 1150 base::FilePath path = GetDirectoryForOriginAndType(origin, type, create, &erro
r); | |
| 1151 if (error != base::PLATFORM_FILE_OK) { | |
| 1152 LOG(WARNING) << "Failed to get origin+type directory: " << path.value(); | |
| 1153 return NULL; | |
| 1154 } | |
| 1155 MarkUsed(); | |
| 1156 SandboxDirectoryDatabase* database = new SandboxDirectoryDatabase(path); | |
| 1157 directories_[key] = database; | |
| 1158 return database; | |
| 1159 } | |
| 1160 | |
| 1161 base::FilePath ObfuscatedFileUtil::GetDirectoryForOrigin( | |
| 1162 const GURL& origin, bool create, base::PlatformFileError* error_code) { | |
| 1163 if (!InitOriginDatabase(create)) { | |
| 1164 if (error_code) { | |
| 1165 *error_code = create ? | |
| 1166 base::PLATFORM_FILE_ERROR_FAILED : | |
| 1167 base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 1168 } | |
| 1169 return base::FilePath(); | |
| 1170 } | |
| 1171 base::FilePath directory_name; | |
| 1172 std::string id = UTF16ToUTF8(webkit_base::GetOriginIdentifierFromURL(origin)); | |
| 1173 | |
| 1174 bool exists_in_db = origin_database_->HasOriginPath(id); | |
| 1175 if (!exists_in_db && !create) { | |
| 1176 if (error_code) | |
| 1177 *error_code = base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 1178 return base::FilePath(); | |
| 1179 } | |
| 1180 if (!origin_database_->GetPathForOrigin(id, &directory_name)) { | |
| 1181 if (error_code) | |
| 1182 *error_code = base::PLATFORM_FILE_ERROR_FAILED; | |
| 1183 return base::FilePath(); | |
| 1184 } | |
| 1185 | |
| 1186 base::FilePath path = file_system_directory_.Append(directory_name); | |
| 1187 bool exists_in_fs = file_util::DirectoryExists(path); | |
| 1188 if (!exists_in_db && exists_in_fs) { | |
| 1189 if (!file_util::Delete(path, true)) { | |
| 1190 if (error_code) | |
| 1191 *error_code = base::PLATFORM_FILE_ERROR_FAILED; | |
| 1192 return base::FilePath(); | |
| 1193 } | |
| 1194 exists_in_fs = false; | |
| 1195 } | |
| 1196 | |
| 1197 if (!exists_in_fs) { | |
| 1198 if (!create || !file_util::CreateDirectory(path)) { | |
| 1199 if (error_code) | |
| 1200 *error_code = create ? | |
| 1201 base::PLATFORM_FILE_ERROR_FAILED : | |
| 1202 base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 1203 return base::FilePath(); | |
| 1204 } | |
| 1205 } | |
| 1206 | |
| 1207 if (error_code) | |
| 1208 *error_code = base::PLATFORM_FILE_OK; | |
| 1209 | |
| 1210 return path; | |
| 1211 } | |
| 1212 | |
| 1213 void ObfuscatedFileUtil::InvalidateUsageCache( | |
| 1214 FileSystemOperationContext* context, | |
| 1215 const GURL& origin, | |
| 1216 FileSystemType type) { | |
| 1217 context->file_system_context()->GetQuotaUtil(type)-> | |
| 1218 InvalidateUsageCache(origin, type); | |
| 1219 } | |
| 1220 | |
| 1221 void ObfuscatedFileUtil::MarkUsed() { | |
| 1222 if (timer_.IsRunning()) | |
| 1223 timer_.Reset(); | |
| 1224 else | |
| 1225 timer_.Start(FROM_HERE, base::TimeDelta::FromSeconds(kFlushDelaySeconds), | |
| 1226 this, &ObfuscatedFileUtil::DropDatabases); | |
| 1227 } | |
| 1228 | |
| 1229 void ObfuscatedFileUtil::DropDatabases() { | |
| 1230 origin_database_.reset(); | |
| 1231 STLDeleteContainerPairSecondPointers( | |
| 1232 directories_.begin(), directories_.end()); | |
| 1233 directories_.clear(); | |
| 1234 } | |
| 1235 | |
| 1236 bool ObfuscatedFileUtil::InitOriginDatabase(bool create) { | |
| 1237 if (!origin_database_) { | |
| 1238 if (!create && !file_util::DirectoryExists(file_system_directory_)) | |
| 1239 return false; | |
| 1240 if (!file_util::CreateDirectory(file_system_directory_)) { | |
| 1241 LOG(WARNING) << "Failed to create FileSystem directory: " << | |
| 1242 file_system_directory_.value(); | |
| 1243 return false; | |
| 1244 } | |
| 1245 origin_database_.reset( | |
| 1246 new SandboxOriginDatabase(file_system_directory_)); | |
| 1247 } | |
| 1248 return true; | |
| 1249 } | |
| 1250 | |
| 1251 PlatformFileError ObfuscatedFileUtil::GenerateNewLocalPath( | |
| 1252 SandboxDirectoryDatabase* db, | |
| 1253 FileSystemOperationContext* context, | |
| 1254 const GURL& origin, | |
| 1255 FileSystemType type, | |
| 1256 base::FilePath* local_path) { | |
| 1257 DCHECK(local_path); | |
| 1258 int64 number; | |
| 1259 if (!db || !db->GetNextInteger(&number)) | |
| 1260 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 1261 | |
| 1262 PlatformFileError error = base::PLATFORM_FILE_OK; | |
| 1263 base::FilePath new_local_path = GetDirectoryForOriginAndType(origin, type, | |
| 1264 false, &error); | |
| 1265 if (error != base::PLATFORM_FILE_OK) | |
| 1266 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 1267 | |
| 1268 // We use the third- and fourth-to-last digits as the directory. | |
| 1269 int64 directory_number = number % 10000 / 100; | |
| 1270 new_local_path = new_local_path.AppendASCII( | |
| 1271 base::StringPrintf("%02" PRId64, directory_number)); | |
| 1272 | |
| 1273 error = NativeFileUtil::CreateDirectory( | |
| 1274 new_local_path, false /* exclusive */, false /* recursive */); | |
| 1275 if (error != base::PLATFORM_FILE_OK) | |
| 1276 return error; | |
| 1277 | |
| 1278 *local_path = | |
| 1279 new_local_path.AppendASCII(base::StringPrintf("%08" PRId64, number)); | |
| 1280 return base::PLATFORM_FILE_OK; | |
| 1281 } | |
| 1282 | |
| 1283 PlatformFileError ObfuscatedFileUtil::CreateOrOpenInternal( | |
| 1284 FileSystemOperationContext* context, | |
| 1285 const FileSystemURL& url, int file_flags, | |
| 1286 PlatformFile* file_handle, bool* created) { | |
| 1287 DCHECK(!(file_flags & (base::PLATFORM_FILE_DELETE_ON_CLOSE | | |
| 1288 base::PLATFORM_FILE_HIDDEN | base::PLATFORM_FILE_EXCLUSIVE_READ | | |
| 1289 base::PLATFORM_FILE_EXCLUSIVE_WRITE))); | |
| 1290 SandboxDirectoryDatabase* db = GetDirectoryDatabase( | |
| 1291 url.origin(), url.type(), true); | |
| 1292 if (!db) | |
| 1293 return base::PLATFORM_FILE_ERROR_FAILED; | |
| 1294 FileId file_id; | |
| 1295 if (!db->GetFileWithPath(url.path(), &file_id)) { | |
| 1296 // The file doesn't exist. | |
| 1297 if (!(file_flags & (base::PLATFORM_FILE_CREATE | | |
| 1298 base::PLATFORM_FILE_CREATE_ALWAYS | base::PLATFORM_FILE_OPEN_ALWAYS))) | |
| 1299 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 1300 FileId parent_id; | |
| 1301 if (!db->GetFileWithPath(VirtualPath::DirName(url.path()), | |
| 1302 &parent_id)) | |
| 1303 return base::PLATFORM_FILE_ERROR_NOT_FOUND; | |
| 1304 FileInfo file_info; | |
| 1305 InitFileInfo(&file_info, parent_id, | |
| 1306 VirtualPath::BaseName(url.path()).value()); | |
| 1307 | |
| 1308 int64 growth = UsageForPath(file_info.name.size()); | |
| 1309 if (!AllocateQuota(context, growth)) | |
| 1310 return base::PLATFORM_FILE_ERROR_NO_SPACE; | |
| 1311 PlatformFileError error = CreateFile( | |
| 1312 context, base::FilePath(), | |
| 1313 url.origin(), url.type(), &file_info, | |
| 1314 file_flags, file_handle); | |
| 1315 if (created && base::PLATFORM_FILE_OK == error) { | |
| 1316 *created = true; | |
| 1317 UpdateUsage(context, url, growth); | |
| 1318 context->change_observers()->Notify( | |
| 1319 &FileChangeObserver::OnCreateFile, MakeTuple(url)); | |
| 1320 } | |
| 1321 return error; | |
| 1322 } | |
| 1323 | |
| 1324 if (file_flags & base::PLATFORM_FILE_CREATE) | |
| 1325 return base::PLATFORM_FILE_ERROR_EXISTS; | |
| 1326 | |
| 1327 base::PlatformFileInfo platform_file_info; | |
| 1328 base::FilePath local_path; | |
| 1329 FileInfo file_info; | |
| 1330 base::PlatformFileError error = GetFileInfoInternal( | |
| 1331 db, context, url.origin(), url.type(), file_id, | |
| 1332 &file_info, &platform_file_info, &local_path); | |
| 1333 if (error != base::PLATFORM_FILE_OK) | |
| 1334 return error; | |
| 1335 if (file_info.is_directory()) | |
| 1336 return base::PLATFORM_FILE_ERROR_NOT_A_FILE; | |
| 1337 | |
| 1338 int64 delta = 0; | |
| 1339 if (file_flags & (base::PLATFORM_FILE_CREATE_ALWAYS | | |
| 1340 base::PLATFORM_FILE_OPEN_TRUNCATED)) { | |
| 1341 // The file exists and we're truncating. | |
| 1342 delta = -platform_file_info.size; | |
| 1343 AllocateQuota(context, delta); | |
| 1344 } | |
| 1345 | |
| 1346 error = NativeFileUtil::CreateOrOpen( | |
| 1347 local_path, file_flags, file_handle, created); | |
| 1348 if (error == base::PLATFORM_FILE_ERROR_NOT_FOUND) { | |
| 1349 // TODO(tzik): Also invalidate on-memory usage cache in UsageTracker. | |
| 1350 // TODO(tzik): Delete database entry after ensuring the file lost. | |
| 1351 InvalidateUsageCache(context, url.origin(), url.type()); | |
| 1352 LOG(WARNING) << "Lost a backing file."; | |
| 1353 error = base::PLATFORM_FILE_ERROR_FAILED; | |
| 1354 } | |
| 1355 | |
| 1356 // If truncating we need to update the usage. | |
| 1357 if (error == base::PLATFORM_FILE_OK && delta) { | |
| 1358 UpdateUsage(context, url, delta); | |
| 1359 context->change_observers()->Notify( | |
| 1360 &FileChangeObserver::OnModifyFile, MakeTuple(url)); | |
| 1361 } | |
| 1362 return error; | |
| 1363 } | |
| 1364 | |
| 1365 } // 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