src/chrome/browser/chromeos/file_system_provider/fake_provided_file_system.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/fake_provided_file_system.h"
   6
   7 #include "base/files/file.h"
   8 #include "base/message_loop/message_loop_proxy.h"
   9 #include "net/base/io_buffer.h"
  10
  11 namespace chromeos {
  12 namespace file_system_provider {
  13 namespace {
  14
  15 const char kFakeFileName[] = "hello.txt";
  16 const char kFakeFileText[] =
  17     "This is a testing file. Lorem ipsum dolor sit amet est.";
  18 const size_t kFakeFileSize = sizeof(kFakeFileText) - 1u;
  19 const char kFakeFileModificationTime[] = "Fri Apr 25 01:47:53 UTC 2014";
  20 const char kFakeFileMimeType[] = "text/plain";
  21
  22 }  // namespace
  23
  24 const char kFakeFilePath[] = "/hello.txt";
  25
  26 FakeEntry::FakeEntry() {
  27 }
  28
  29 FakeEntry::FakeEntry(scoped_ptr<EntryMetadata> metadata,
  30                      const std::string& contents)
  31     : metadata(metadata.Pass()), contents(contents) {
  32 }
  33
  34 FakeEntry::~FakeEntry() {
  35 }
  36
  37 FakeProvidedFileSystem::FakeProvidedFileSystem(
  38     const ProvidedFileSystemInfo& file_system_info)
  39     : file_system_info_(file_system_info),
  40       last_file_handle_(0),
  41       weak_ptr_factory_(this) {
  42   AddEntry(
  43       base::FilePath::FromUTF8Unsafe("/"), true, "", 0, base::Time(), "", "");
  44
  45   base::Time modification_time;
  46   DCHECK(base::Time::FromString(kFakeFileModificationTime, &modification_time));
  47   AddEntry(base::FilePath::FromUTF8Unsafe(kFakeFilePath),
  48            false,
  49            kFakeFileName,
  50            kFakeFileSize,
  51            modification_time,
  52            kFakeFileMimeType,
  53            kFakeFileText);
  54 }
  55
  56 FakeProvidedFileSystem::~FakeProvidedFileSystem() {}
  57
  58 void FakeProvidedFileSystem::AddEntry(const base::FilePath& entry_path,
  59                                       bool is_directory,
  60                                       const std::string& name,
  61                                       int64 size,
  62                                       base::Time modification_time,
  63                                       std::string mime_type,
  64                                       std::string contents) {
  65   DCHECK(entries_.find(entry_path) == entries_.end());
  66   scoped_ptr<EntryMetadata> metadata(new EntryMetadata);
  67
  68   metadata->is_directory = is_directory;
  69   metadata->name = name;
  70   metadata->size = size;
  71   metadata->modification_time = modification_time;
  72   metadata->mime_type = mime_type;
  73
  74   entries_[entry_path] =
  75       make_linked_ptr(new FakeEntry(metadata.Pass(), contents));
  76 }
  77
  78 const FakeEntry* FakeProvidedFileSystem::GetEntry(
  79     const base::FilePath& entry_path) const {
  80   const Entries::const_iterator entry_it = entries_.find(entry_path);
  81   if (entry_it == entries_.end())
  82     return NULL;
  83
  84   return entry_it->second.get();
  85 }
  86
  87 ProvidedFileSystemInterface::AbortCallback
  88 FakeProvidedFileSystem::RequestUnmount(
  89     const storage::AsyncFileUtil::StatusCallback& callback) {
  90   return PostAbortableTask(base::Bind(callback, base::File::FILE_OK));
  91 }
  92
  93 ProvidedFileSystemInterface::AbortCallback FakeProvidedFileSystem::GetMetadata(
  94     const base::FilePath& entry_path,
  95     ProvidedFileSystemInterface::MetadataFieldMask fields,
  96     const ProvidedFileSystemInterface::GetMetadataCallback& callback) {
  97   const Entries::const_iterator entry_it = entries_.find(entry_path);
  98
  99   if (entry_it == entries_.end()) {
 100     return PostAbortableTask(
 101         base::Bind(callback,
 102                    base::Passed(make_scoped_ptr<EntryMetadata>(NULL)),
 103                    base::File::FILE_ERROR_NOT_FOUND));
 104   }
 105
 106   scoped_ptr<EntryMetadata> metadata(new EntryMetadata);
 107   metadata->is_directory = entry_it->second->metadata->is_directory;
 108   metadata->name = entry_it->second->metadata->name;
 109   metadata->size = entry_it->second->metadata->size;
 110   metadata->modification_time = entry_it->second->metadata->modification_time;
 111   metadata->mime_type = entry_it->second->metadata->mime_type;
 112   metadata->thumbnail = entry_it->second->metadata->thumbnail;
 113
 114   return PostAbortableTask(
 115       base::Bind(callback, base::Passed(&metadata), base::File::FILE_OK));
 116 }
 117
 118 ProvidedFileSystemInterface::AbortCallback
 119 FakeProvidedFileSystem::ReadDirectory(
 120     const base::FilePath& directory_path,
 121     const storage::AsyncFileUtil::ReadDirectoryCallback& callback) {
 122   storage::AsyncFileUtil::EntryList entry_list;
 123
 124   for (Entries::const_iterator it = entries_.begin(); it != entries_.end();
 125        ++it) {
 126     const base::FilePath file_path = it->first;
 127     if (file_path == directory_path || directory_path.IsParent(file_path)) {
 128       const EntryMetadata* const metadata = it->second->metadata.get();
 129       entry_list.push_back(storage::DirectoryEntry(
 130           metadata->name,
 131           metadata->is_directory ? storage::DirectoryEntry::DIRECTORY
 132                                  : storage::DirectoryEntry::FILE,
 133           metadata->size,
 134           metadata->modification_time));
 135     }
 136   }
 137
 138   return PostAbortableTask(base::Bind(
 139       callback, base::File::FILE_OK, entry_list, false /* has_more */));
 140 }
 141
 142 ProvidedFileSystemInterface::AbortCallback FakeProvidedFileSystem::OpenFile(
 143     const base::FilePath& entry_path,
 144     OpenFileMode mode,
 145     const OpenFileCallback& callback) {
 146   const Entries::const_iterator entry_it = entries_.find(entry_path);
 147
 148   if (entry_it == entries_.end()) {
 149     return PostAbortableTask(base::Bind(
 150         callback, 0 /* file_handle */, base::File::FILE_ERROR_NOT_FOUND));
 151   }
 152
 153   const int file_handle = ++last_file_handle_;
 154   opened_files_[file_handle] = entry_path;
 155   return PostAbortableTask(
 156       base::Bind(callback, file_handle, base::File::FILE_OK));
 157 }
 158
 159 ProvidedFileSystemInterface::AbortCallback FakeProvidedFileSystem::CloseFile(
 160     int file_handle,
 161     const storage::AsyncFileUtil::StatusCallback& callback) {
 162   const OpenedFilesMap::iterator opened_file_it =
 163       opened_files_.find(file_handle);
 164
 165   if (opened_file_it == opened_files_.end()) {
 166     return PostAbortableTask(
 167         base::Bind(callback, base::File::FILE_ERROR_NOT_FOUND));
 168   }
 169
 170   opened_files_.erase(opened_file_it);
 171   return PostAbortableTask(base::Bind(callback, base::File::FILE_OK));
 172 }
 173
 174 ProvidedFileSystemInterface::AbortCallback FakeProvidedFileSystem::ReadFile(
 175     int file_handle,
 176     net::IOBuffer* buffer,
 177     int64 offset,
 178     int length,
 179     const ProvidedFileSystemInterface::ReadChunkReceivedCallback& callback) {
 180   const OpenedFilesMap::iterator opened_file_it =
 181       opened_files_.find(file_handle);
 182
 183   if (opened_file_it == opened_files_.end() ||
 184       opened_file_it->second.AsUTF8Unsafe() != kFakeFilePath) {
 185     return PostAbortableTask(
 186         base::Bind(callback,
 187                    0 /* chunk_length */,
 188                    false /* has_more */,
 189                    base::File::FILE_ERROR_INVALID_OPERATION));
 190   }
 191
 192   const Entries::const_iterator entry_it =
 193       entries_.find(opened_file_it->second);
 194   if (entry_it == entries_.end()) {
 195     return PostAbortableTask(
 196         base::Bind(callback,
 197                    0 /* chunk_length */,
 198                    false /* has_more */,
 199                    base::File::FILE_ERROR_INVALID_OPERATION));
 200   }
 201
 202   // Send the response byte by byte.
 203   int64 current_offset = offset;
 204   int current_length = length;
 205
 206   // Reading behind EOF is fine, it will just return 0 bytes.
 207   if (current_offset >= entry_it->second->metadata->size || !current_length) {
 208     return PostAbortableTask(base::Bind(callback,
 209                                         0 /* chunk_length */,
 210                                         false /* has_more */,
 211                                         base::File::FILE_OK));
 212   }
 213
 214   const FakeEntry* const entry = entry_it->second.get();
 215   std::vector<int> task_ids;
 216   while (current_offset < entry->metadata->size && current_length) {
 217     buffer->data()[current_offset - offset] = entry->contents[current_offset];
 218     const bool has_more =
 219         (current_offset + 1 < entry->metadata->size) && (current_length - 1);
 220     const int task_id = tracker_.PostTask(
 221         base::MessageLoopProxy::current().get(),
 222         FROM_HERE,
 223         base::Bind(
 224             callback, 1 /* chunk_length */, has_more, base::File::FILE_OK));
 225     task_ids.push_back(task_id);
 226     current_offset++;
 227     current_length--;
 228   }
 229
 230   return base::Bind(&FakeProvidedFileSystem::AbortMany,
 231                     weak_ptr_factory_.GetWeakPtr(),
 232                     task_ids);
 233 }
 234
 235 ProvidedFileSystemInterface::AbortCallback
 236 FakeProvidedFileSystem::CreateDirectory(
 237     const base::FilePath& directory_path,
 238     bool recursive,
 239     const storage::AsyncFileUtil::StatusCallback& callback) {
 240   // TODO(mtomasz): Implement it once needed.
 241   return PostAbortableTask(base::Bind(callback, base::File::FILE_OK));
 242 }
 243
 244 ProvidedFileSystemInterface::AbortCallback FakeProvidedFileSystem::DeleteEntry(
 245     const base::FilePath& entry_path,
 246     bool recursive,
 247     const storage::AsyncFileUtil::StatusCallback& callback) {
 248   // TODO(mtomasz): Implement it once needed.
 249   return PostAbortableTask(base::Bind(callback, base::File::FILE_OK));
 250 }
 251
 252 ProvidedFileSystemInterface::AbortCallback FakeProvidedFileSystem::CreateFile(
 253     const base::FilePath& file_path,
 254     const storage::AsyncFileUtil::StatusCallback& callback) {
 255   const base::File::Error result = file_path.AsUTF8Unsafe() != kFakeFilePath
 256                                        ? base::File::FILE_ERROR_EXISTS
 257                                        : base::File::FILE_OK;
 258
 259   return PostAbortableTask(base::Bind(callback, result));
 260 }
 261
 262 ProvidedFileSystemInterface::AbortCallback FakeProvidedFileSystem::CopyEntry(
 263     const base::FilePath& source_path,
 264     const base::FilePath& target_path,
 265     const storage::AsyncFileUtil::StatusCallback& callback) {
 266   // TODO(mtomasz): Implement it once needed.
 267   return PostAbortableTask(base::Bind(callback, base::File::FILE_OK));
 268 }
 269
 270 ProvidedFileSystemInterface::AbortCallback FakeProvidedFileSystem::MoveEntry(
 271     const base::FilePath& source_path,
 272     const base::FilePath& target_path,
 273     const storage::AsyncFileUtil::StatusCallback& callback) {
 274   // TODO(mtomasz): Implement it once needed.
 275   return PostAbortableTask(base::Bind(callback, base::File::FILE_OK));
 276 }
 277
 278 ProvidedFileSystemInterface::AbortCallback FakeProvidedFileSystem::Truncate(
 279     const base::FilePath& file_path,
 280     int64 length,
 281     const storage::AsyncFileUtil::StatusCallback& callback) {
 282   // TODO(mtomasz): Implement it once needed.
 283   return PostAbortableTask(base::Bind(callback, base::File::FILE_OK));
 284 }
 285
 286 ProvidedFileSystemInterface::AbortCallback FakeProvidedFileSystem::WriteFile(
 287     int file_handle,
 288     net::IOBuffer* buffer,
 289     int64 offset,
 290     int length,
 291     const storage::AsyncFileUtil::StatusCallback& callback) {
 292   const OpenedFilesMap::iterator opened_file_it =
 293       opened_files_.find(file_handle);
 294
 295   if (opened_file_it == opened_files_.end() ||
 296       opened_file_it->second.AsUTF8Unsafe() != kFakeFilePath) {
 297     return PostAbortableTask(
 298         base::Bind(callback, base::File::FILE_ERROR_INVALID_OPERATION));
 299   }
 300
 301   const Entries::iterator entry_it = entries_.find(opened_file_it->second);
 302   if (entry_it == entries_.end()) {
 303     return PostAbortableTask(
 304         base::Bind(callback, base::File::FILE_ERROR_INVALID_OPERATION));
 305   }
 306
 307   FakeEntry* const entry = entry_it->second.get();
 308   if (offset > entry->metadata->size) {
 309     return PostAbortableTask(
 310         base::Bind(callback, base::File::FILE_ERROR_INVALID_OPERATION));
 311   }
 312
 313   // Allocate the string size in advance.
 314   if (offset + length > entry->metadata->size) {
 315     entry->metadata->size = offset + length;
 316     entry->contents.resize(entry->metadata->size);
 317   }
 318
 319   entry->contents.replace(offset, length, buffer->data(), length);
 320
 321   return PostAbortableTask(base::Bind(callback, base::File::FILE_OK));
 322 }
 323
 324 ProvidedFileSystemInterface::AbortCallback FakeProvidedFileSystem::AddWatcher(
 325     const GURL& origin,
 326     const base::FilePath& entry_watcher,
 327     bool recursive,
 328     bool persistent,
 329     const storage::AsyncFileUtil::StatusCallback& callback,
 330     const storage::WatcherManager::NotificationCallback&
 331         notification_callback) {
 332   // TODO(mtomasz): Implement it once needed.
 333   return PostAbortableTask(base::Bind(callback, base::File::FILE_OK));
 334 }
 335
 336 void FakeProvidedFileSystem::RemoveWatcher(
 337     const GURL& origin,
 338     const base::FilePath& entry_path,
 339     bool recursive,
 340     const storage::AsyncFileUtil::StatusCallback& callback) {
 341   // TODO(mtomasz): Implement it once needed.
 342   callback.Run(base::File::FILE_OK);
 343 }
 344
 345 const ProvidedFileSystemInfo& FakeProvidedFileSystem::GetFileSystemInfo()
 346     const {
 347   return file_system_info_;
 348 }
 349
 350 RequestManager* FakeProvidedFileSystem::GetRequestManager() {
 351   NOTREACHED();
 352   return NULL;
 353 }
 354
 355 Watchers* FakeProvidedFileSystem::GetWatchers() {
 356   return &watchers_;
 357 }
 358
 359 void FakeProvidedFileSystem::AddObserver(ProvidedFileSystemObserver* observer) {
 360   DCHECK(observer);
 361   observers_.AddObserver(observer);
 362 }
 363
 364 void FakeProvidedFileSystem::RemoveObserver(
 365     ProvidedFileSystemObserver* observer) {
 366   DCHECK(observer);
 367   observers_.RemoveObserver(observer);
 368 }
 369
 370 bool FakeProvidedFileSystem::Notify(
 371     const base::FilePath& entry_path,
 372     bool recursive,
 373     storage::WatcherManager::ChangeType change_type,
 374     scoped_ptr<ProvidedFileSystemObserver::Changes> changes,
 375     const std::string& tag) {
 376   NOTREACHED();
 377   return false;
 378 }
 379
 380 ProvidedFileSystemInterface* FakeProvidedFileSystem::Create(
 381     Profile* profile,
 382     const ProvidedFileSystemInfo& file_system_info) {
 383   return new FakeProvidedFileSystem(file_system_info);
 384 }
 385
 386 base::WeakPtr<ProvidedFileSystemInterface>
 387 FakeProvidedFileSystem::GetWeakPtr() {
 388   return weak_ptr_factory_.GetWeakPtr();
 389 }
 390
 391 ProvidedFileSystemInterface::AbortCallback
 392 FakeProvidedFileSystem::PostAbortableTask(const base::Closure& callback) {
 393   const int task_id = tracker_.PostTask(
 394       base::MessageLoopProxy::current().get(), FROM_HERE, callback);
 395   return base::Bind(
 396       &FakeProvidedFileSystem::Abort, weak_ptr_factory_.GetWeakPtr(), task_id);
 397 }
 398
 399 void FakeProvidedFileSystem::Abort(
 400     int task_id,
 401     const storage::AsyncFileUtil::StatusCallback& callback) {
 402   tracker_.TryCancel(task_id);
 403   callback.Run(base::File::FILE_OK);
 404 }
 405
 406 void FakeProvidedFileSystem::AbortMany(
 407     const std::vector<int>& task_ids,
 408     const storage::AsyncFileUtil::StatusCallback& callback) {
 409   for (size_t i = 0; i < task_ids.size(); ++i) {
 410     tracker_.TryCancel(task_ids[i]);
 411   }
 412   callback.Run(base::File::FILE_OK);
 413 }
 414
 415 }  // namespace file_system_provider
 416 }  // namespace chromeos