src/chrome/browser/chromeos/file_system_provider/fileapi/provider_async_file_util.cc

   1 // Copyright 2014 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 "chrome/browser/chromeos/file_system_provider/fileapi/provider_async_file_util.h"
   6
   7 #include "base/callback.h"
   8 #include "base/files/file.h"
   9 #include "base/files/file_path.h"
  10 #include "base/logging.h"
  11 #include "chrome/browser/chromeos/file_system_provider/mount_path_util.h"
  12 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_interface.h"
  13 #include "content/public/browser/browser_thread.h"
  14 #include "storage/browser/fileapi/file_system_operation_context.h"
  15 #include "storage/browser/fileapi/file_system_url.h"
  16 #include "storage/common/blob/shareable_file_reference.h"
  17
  18 using content::BrowserThread;
  19
  20 namespace chromeos {
  21 namespace file_system_provider {
  22 namespace internal {
  23 namespace {
  24
  25 // Executes GetFileInfo on the UI thread.
  26 void GetFileInfoOnUIThread(
  27     scoped_ptr<storage::FileSystemOperationContext> context,
  28     const storage::FileSystemURL& url,
  29     const ProvidedFileSystemInterface::GetMetadataCallback& callback) {
  30   util::FileSystemURLParser parser(url);
  31   if (!parser.Parse()) {
  32     callback.Run(make_scoped_ptr<EntryMetadata>(NULL),
  33                  base::File::FILE_ERROR_INVALID_OPERATION);
  34     return;
  35   }
  36
  37   parser.file_system()->GetMetadata(
  38       parser.file_path(),
  39       ProvidedFileSystemInterface::METADATA_FIELD_DEFAULT,
  40       callback);
  41 }
  42
  43 // Routes the response of GetFileInfo back to the IO thread with a type
  44 // conversion.
  45 void OnGetFileInfo(const storage::AsyncFileUtil::GetFileInfoCallback& callback,
  46                    scoped_ptr<EntryMetadata> metadata,
  47                    base::File::Error result) {
  48   if (result != base::File::FILE_OK) {
  49     BrowserThread::PostTask(BrowserThread::IO,
  50                             FROM_HERE,
  51                             base::Bind(callback, result, base::File::Info()));
  52     return;
  53   }
  54
  55   DCHECK(metadata.get());
  56   base::File::Info file_info;
  57
  58   // TODO(mtomasz): Add support for last modified time and creation time.
  59   // See: crbug.com/388540.
  60   file_info.size = metadata->size;
  61   file_info.is_directory = metadata->is_directory;
  62   file_info.is_symbolic_link = false;  // Not supported.
  63   file_info.last_modified = metadata->modification_time;
  64   file_info.last_accessed = metadata->modification_time;  // Not supported.
  65   file_info.creation_time = metadata->modification_time;  // Not supported.
  66
  67   BrowserThread::PostTask(BrowserThread::IO,
  68                           FROM_HERE,
  69                           base::Bind(callback, base::File::FILE_OK, file_info));
  70 }
  71
  72 // Executes ReadDirectory on the UI thread.
  73 void ReadDirectoryOnUIThread(
  74     scoped_ptr<storage::FileSystemOperationContext> context,
  75     const storage::FileSystemURL& url,
  76     const storage::AsyncFileUtil::ReadDirectoryCallback& callback) {
  77   util::FileSystemURLParser parser(url);
  78   if (!parser.Parse()) {
  79     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION,
  80                  storage::AsyncFileUtil::EntryList(),
  81                  false /* has_more */);
  82     return;
  83   }
  84
  85   parser.file_system()->ReadDirectory(parser.file_path(), callback);
  86 }
  87
  88 // Routes the response of ReadDirectory back to the IO thread.
  89 void OnReadDirectory(
  90     const storage::AsyncFileUtil::ReadDirectoryCallback& callback,
  91     base::File::Error result,
  92     const storage::AsyncFileUtil::EntryList& entry_list,
  93     bool has_more) {
  94   BrowserThread::PostTask(BrowserThread::IO,
  95                           FROM_HERE,
  96                           base::Bind(callback, result, entry_list, has_more));
  97 }
  98
  99 // Executes CreateDirectory on the UI thread.
 100 void CreateDirectoryOnUIThread(
 101     scoped_ptr<storage::FileSystemOperationContext> context,
 102     const storage::FileSystemURL& url,
 103     bool exclusive,
 104     bool recursive,
 105     const storage::AsyncFileUtil::StatusCallback& callback) {
 106   util::FileSystemURLParser parser(url);
 107   if (!parser.Parse()) {
 108     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
 109     return;
 110   }
 111
 112   parser.file_system()->CreateDirectory(
 113       parser.file_path(), recursive, callback);
 114 }
 115
 116 // Routes the response of CreateDirectory back to the IO thread.
 117 void OnCreateDirectory(bool exclusive,
 118                        const storage::AsyncFileUtil::StatusCallback& callback,
 119                        base::File::Error result) {
 120   // If the directory already existed and the operation wasn't exclusive, then
 121   // return success anyway, since it is not an error.
 122   const base::File::Error error =
 123       (result == base::File::FILE_ERROR_EXISTS && !exclusive)
 124           ? base::File::FILE_OK
 125           : result;
 126
 127   BrowserThread::PostTask(
 128       BrowserThread::IO, FROM_HERE, base::Bind(callback, error));
 129 }
 130
 131 // Executes DeleteEntry on the UI thread.
 132 void DeleteEntryOnUIThread(
 133     scoped_ptr<storage::FileSystemOperationContext> context,
 134     const storage::FileSystemURL& url,
 135     bool recursive,
 136     const storage::AsyncFileUtil::StatusCallback& callback) {
 137   util::FileSystemURLParser parser(url);
 138   if (!parser.Parse()) {
 139     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
 140     return;
 141   }
 142
 143   parser.file_system()->DeleteEntry(parser.file_path(), recursive, callback);
 144 }
 145
 146 // Routes the response of DeleteEntry back to the IO thread.
 147 void OnDeleteEntry(const storage::AsyncFileUtil::StatusCallback& callback,
 148                    base::File::Error result) {
 149   BrowserThread::PostTask(
 150       BrowserThread::IO, FROM_HERE, base::Bind(callback, result));
 151 }
 152
 153 // Executes CreateFile on the UI thread.
 154 void CreateFileOnUIThread(
 155     scoped_ptr<storage::FileSystemOperationContext> context,
 156     const storage::FileSystemURL& url,
 157     const storage::AsyncFileUtil::StatusCallback& callback) {
 158   util::FileSystemURLParser parser(url);
 159   if (!parser.Parse()) {
 160     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
 161     return;
 162   }
 163
 164   parser.file_system()->CreateFile(parser.file_path(), callback);
 165 }
 166
 167 // Routes the response of CreateFile to a callback of EnsureFileExists() on the
 168 // IO thread.
 169 void OnCreateFileForEnsureFileExists(
 170     const storage::AsyncFileUtil::EnsureFileExistsCallback& callback,
 171     base::File::Error result) {
 172   const bool created = result == base::File::FILE_OK;
 173
 174   // If the file already existed, then return success anyway, since it is not
 175   // an error.
 176   const base::File::Error error =
 177       result == base::File::FILE_ERROR_EXISTS ? base::File::FILE_OK : result;
 178
 179   BrowserThread::PostTask(
 180       BrowserThread::IO, FROM_HERE, base::Bind(callback, error, created));
 181 }
 182
 183 // Executes CopyEntry on the UI thread.
 184 void CopyEntryOnUIThread(
 185     scoped_ptr<storage::FileSystemOperationContext> context,
 186     const storage::FileSystemURL& source_url,
 187     const storage::FileSystemURL& target_url,
 188     const storage::AsyncFileUtil::StatusCallback& callback) {
 189   util::FileSystemURLParser source_parser(source_url);
 190   util::FileSystemURLParser target_parser(target_url);
 191
 192   if (!source_parser.Parse() || !target_parser.Parse() ||
 193       source_parser.file_system() != target_parser.file_system()) {
 194     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
 195     return;
 196   }
 197
 198   target_parser.file_system()->CopyEntry(
 199       source_parser.file_path(), target_parser.file_path(), callback);
 200 }
 201
 202 // Routes the response of CopyEntry to a callback of CopyLocalFile() on the
 203 // IO thread.
 204 void OnCopyEntry(const storage::AsyncFileUtil::StatusCallback& callback,
 205                  base::File::Error result) {
 206   BrowserThread::PostTask(
 207       BrowserThread::IO, FROM_HERE, base::Bind(callback, result));
 208 }
 209
 210 // Executes MoveEntry on the UI thread.
 211 void MoveEntryOnUIThread(
 212     scoped_ptr<storage::FileSystemOperationContext> context,
 213     const storage::FileSystemURL& source_url,
 214     const storage::FileSystemURL& target_url,
 215     const storage::AsyncFileUtil::StatusCallback& callback) {
 216   util::FileSystemURLParser source_parser(source_url);
 217   util::FileSystemURLParser target_parser(target_url);
 218
 219   if (!source_parser.Parse() || !target_parser.Parse() ||
 220       source_parser.file_system() != target_parser.file_system()) {
 221     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
 222     return;
 223   }
 224
 225   target_parser.file_system()->MoveEntry(
 226       source_parser.file_path(), target_parser.file_path(), callback);
 227 }
 228
 229 // Routes the response of CopyEntry to a callback of MoveLocalFile() on the
 230 // IO thread.
 231 void OnMoveEntry(const storage::AsyncFileUtil::StatusCallback& callback,
 232                  base::File::Error result) {
 233   BrowserThread::PostTask(
 234       BrowserThread::IO, FROM_HERE, base::Bind(callback, result));
 235 }
 236
 237 // Executes Truncate on the UI thread.
 238 void TruncateOnUIThread(
 239     scoped_ptr<storage::FileSystemOperationContext> context,
 240     const storage::FileSystemURL& url,
 241     int64 length,
 242     const storage::AsyncFileUtil::StatusCallback& callback) {
 243   util::FileSystemURLParser parser(url);
 244   if (!parser.Parse()) {
 245     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
 246     return;
 247   }
 248
 249   parser.file_system()->Truncate(parser.file_path(), length, callback);
 250 }
 251
 252 // Routes the response of Truncate back to the IO thread.
 253 void OnTruncate(const storage::AsyncFileUtil::StatusCallback& callback,
 254                 base::File::Error result) {
 255   BrowserThread::PostTask(
 256       BrowserThread::IO, FROM_HERE, base::Bind(callback, result));
 257 }
 258
 259 }  // namespace
 260
 261 ProviderAsyncFileUtil::ProviderAsyncFileUtil() {}
 262
 263 ProviderAsyncFileUtil::~ProviderAsyncFileUtil() {}
 264
 265 void ProviderAsyncFileUtil::CreateOrOpen(
 266     scoped_ptr<storage::FileSystemOperationContext> context,
 267     const storage::FileSystemURL& url,
 268     int file_flags,
 269     const CreateOrOpenCallback& callback) {
 270   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 271   if ((file_flags & base::File::FLAG_CREATE) ||
 272       (file_flags & base::File::FLAG_OPEN_ALWAYS) ||
 273       (file_flags & base::File::FLAG_CREATE_ALWAYS) ||
 274       (file_flags & base::File::FLAG_OPEN_TRUNCATED)) {
 275     callback.Run(base::File(base::File::FILE_ERROR_ACCESS_DENIED),
 276                  base::Closure());
 277     return;
 278   }
 279
 280   NOTIMPLEMENTED();
 281   callback.Run(base::File(base::File::FILE_ERROR_INVALID_OPERATION),
 282                base::Closure());
 283 }
 284
 285 void ProviderAsyncFileUtil::EnsureFileExists(
 286     scoped_ptr<storage::FileSystemOperationContext> context,
 287     const storage::FileSystemURL& url,
 288     const EnsureFileExistsCallback& callback) {
 289   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 290   BrowserThread::PostTask(
 291       BrowserThread::UI,
 292       FROM_HERE,
 293       base::Bind(&CreateFileOnUIThread,
 294                  base::Passed(&context),
 295                  url,
 296                  base::Bind(&OnCreateFileForEnsureFileExists, callback)));
 297 }
 298
 299 void ProviderAsyncFileUtil::CreateDirectory(
 300     scoped_ptr<storage::FileSystemOperationContext> context,
 301     const storage::FileSystemURL& url,
 302     bool exclusive,
 303     bool recursive,
 304     const StatusCallback& callback) {
 305   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 306   BrowserThread::PostTask(
 307       BrowserThread::UI,
 308       FROM_HERE,
 309       base::Bind(&CreateDirectoryOnUIThread,
 310                  base::Passed(&context),
 311                  url,
 312                  exclusive,
 313                  recursive,
 314                  base::Bind(&OnCreateDirectory, exclusive, callback)));
 315 }
 316
 317 void ProviderAsyncFileUtil::GetFileInfo(
 318     scoped_ptr<storage::FileSystemOperationContext> context,
 319     const storage::FileSystemURL& url,
 320     const GetFileInfoCallback& callback) {
 321   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 322   BrowserThread::PostTask(BrowserThread::UI,
 323                           FROM_HERE,
 324                           base::Bind(&GetFileInfoOnUIThread,
 325                                      base::Passed(&context),
 326                                      url,
 327                                      base::Bind(&OnGetFileInfo, callback)));
 328 }
 329
 330 void ProviderAsyncFileUtil::ReadDirectory(
 331     scoped_ptr<storage::FileSystemOperationContext> context,
 332     const storage::FileSystemURL& url,
 333     const ReadDirectoryCallback& callback) {
 334   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 335   BrowserThread::PostTask(BrowserThread::UI,
 336                           FROM_HERE,
 337                           base::Bind(&ReadDirectoryOnUIThread,
 338                                      base::Passed(&context),
 339                                      url,
 340                                      base::Bind(&OnReadDirectory, callback)));
 341 }
 342
 343 void ProviderAsyncFileUtil::Touch(
 344     scoped_ptr<storage::FileSystemOperationContext> context,
 345     const storage::FileSystemURL& url,
 346     const base::Time& last_access_time,
 347     const base::Time& last_modified_time,
 348     const StatusCallback& callback) {
 349   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 350   callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
 351 }
 352
 353 void ProviderAsyncFileUtil::Truncate(
 354     scoped_ptr<storage::FileSystemOperationContext> context,
 355     const storage::FileSystemURL& url,
 356     int64 length,
 357     const StatusCallback& callback) {
 358   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 359   BrowserThread::PostTask(BrowserThread::UI,
 360                           FROM_HERE,
 361                           base::Bind(&TruncateOnUIThread,
 362                                      base::Passed(&context),
 363                                      url,
 364                                      length,
 365                                      base::Bind(&OnTruncate, callback)));
 366 }
 367
 368 void ProviderAsyncFileUtil::CopyFileLocal(
 369     scoped_ptr<storage::FileSystemOperationContext> context,
 370     const storage::FileSystemURL& src_url,
 371     const storage::FileSystemURL& dest_url,
 372     CopyOrMoveOption option,
 373     const CopyFileProgressCallback& progress_callback,
 374     const StatusCallback& callback) {
 375   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 376   // TODO(mtomasz): Consier adding support for options (preserving last modified
 377   // time) as well as the progress callback.
 378   BrowserThread::PostTask(BrowserThread::UI,
 379                           FROM_HERE,
 380                           base::Bind(&CopyEntryOnUIThread,
 381                                      base::Passed(&context),
 382                                      src_url,
 383                                      dest_url,
 384                                      base::Bind(&OnCopyEntry, callback)));
 385 }
 386
 387 void ProviderAsyncFileUtil::MoveFileLocal(
 388     scoped_ptr<storage::FileSystemOperationContext> context,
 389     const storage::FileSystemURL& src_url,
 390     const storage::FileSystemURL& dest_url,
 391     CopyOrMoveOption option,
 392     const StatusCallback& callback) {
 393   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 394   // TODO(mtomasz): Consier adding support for options (preserving last modified
 395   // time) as well as the progress callback.
 396   BrowserThread::PostTask(BrowserThread::UI,
 397                           FROM_HERE,
 398                           base::Bind(&MoveEntryOnUIThread,
 399                                      base::Passed(&context),
 400                                      src_url,
 401                                      dest_url,
 402                                      base::Bind(&OnMoveEntry, callback)));
 403 }
 404
 405 void ProviderAsyncFileUtil::CopyInForeignFile(
 406     scoped_ptr<storage::FileSystemOperationContext> context,
 407     const base::FilePath& src_file_path,
 408     const storage::FileSystemURL& dest_url,
 409     const StatusCallback& callback) {
 410   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 411   callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
 412 }
 413
 414 void ProviderAsyncFileUtil::DeleteFile(
 415     scoped_ptr<storage::FileSystemOperationContext> context,
 416     const storage::FileSystemURL& url,
 417     const StatusCallback& callback) {
 418   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 419   BrowserThread::PostTask(BrowserThread::UI,
 420                           FROM_HERE,
 421                           base::Bind(&DeleteEntryOnUIThread,
 422                                      base::Passed(&context),
 423                                      url,
 424                                      false,  // recursive
 425                                      base::Bind(&OnDeleteEntry, callback)));
 426 }
 427
 428 void ProviderAsyncFileUtil::DeleteDirectory(
 429     scoped_ptr<storage::FileSystemOperationContext> context,
 430     const storage::FileSystemURL& url,
 431     const StatusCallback& callback) {
 432   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 433   BrowserThread::PostTask(BrowserThread::UI,
 434                           FROM_HERE,
 435                           base::Bind(&DeleteEntryOnUIThread,
 436                                      base::Passed(&context),
 437                                      url,
 438                                      false,  // recursive
 439                                      base::Bind(&OnDeleteEntry, callback)));
 440 }
 441
 442 void ProviderAsyncFileUtil::DeleteRecursively(
 443     scoped_ptr<storage::FileSystemOperationContext> context,
 444     const storage::FileSystemURL& url,
 445     const StatusCallback& callback) {
 446   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 447   BrowserThread::PostTask(BrowserThread::UI,
 448                           FROM_HERE,
 449                           base::Bind(&DeleteEntryOnUIThread,
 450                                      base::Passed(&context),
 451                                      url,
 452                                      true,  // recursive
 453                                      base::Bind(&OnDeleteEntry, callback)));
 454 }
 455
 456 void ProviderAsyncFileUtil::CreateSnapshotFile(
 457     scoped_ptr<storage::FileSystemOperationContext> context,
 458     const storage::FileSystemURL& url,
 459     const CreateSnapshotFileCallback& callback) {
 460   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 461   NOTIMPLEMENTED();
 462   callback.Run(base::File::FILE_ERROR_INVALID_OPERATION,
 463                base::File::Info(),
 464                base::FilePath(),
 465                scoped_refptr<storage::ShareableFileReference>());
 466 }
 467
 468 }  // namespace internal
 469 }  // namespace file_system_provider
 470 }  // namespace chromeos