chrome/browser/chromeos/extensions/file_manager/private_api_mount.cc

   1 // Copyright 2013 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/extensions/file_manager/private_api_mount.h"
   6
   7 #include <string>
   8
   9 #include "base/files/file_util.h"
  10 #include "base/format_macros.h"
  11 #include "chrome/browser/chromeos/drive/file_system_interface.h"
  12 #include "chrome/browser/chromeos/drive/file_system_util.h"
  13 #include "chrome/browser/chromeos/extensions/file_manager/private_api_util.h"
  14 #include "chrome/browser/chromeos/file_manager/fileapi_util.h"
  15 #include "chrome/browser/chromeos/file_manager/volume_manager.h"
  16 #include "chrome/browser/drive/event_logger.h"
  17 #include "chrome/browser/profiles/profile.h"
  18 #include "chrome/common/extensions/api/file_manager_private.h"
  19 #include "chromeos/disks/disk_mount_manager.h"
  20 #include "content/public/browser/browser_thread.h"
  21 #include "google_apis/drive/task_util.h"
  22 #include "ui/shell_dialogs/selected_file_info.h"
  23
  24 using chromeos::disks::DiskMountManager;
  25 using content::BrowserThread;
  26 namespace file_manager_private = extensions::api::file_manager_private;
  27
  28 namespace extensions {
  29
  30 namespace {
  31
  32 // Does chmod o+r for the given path to ensure the file is readable from avfs.
  33 void EnsureReadableFilePermissionOnBlockingPool(
  34     const base::FilePath& path,
  35     const base::Callback<void(drive::FileError, const base::FilePath&)>&
  36         callback) {
  37   int mode = 0;
  38   if (!base::GetPosixFilePermissions(path, &mode) ||
  39       !base::SetPosixFilePermissions(path, mode | S_IROTH)) {
  40     callback.Run(drive::FILE_ERROR_ACCESS_DENIED, base::FilePath());
  41     return;
  42   }
  43   callback.Run(drive::FILE_ERROR_OK, path);
  44 }
  45
  46 }  // namespace
  47
  48 bool FileManagerPrivateAddMountFunction::RunAsync() {
  49   using file_manager_private::AddMount::Params;
  50   const scoped_ptr<Params> params(Params::Create(*args_));
  51   EXTENSION_FUNCTION_VALIDATE(params);
  52
  53   drive::EventLogger* logger = file_manager::util::GetLogger(GetProfile());
  54   if (logger) {
  55     logger->Log(logging::LOG_INFO, "%s[%d] called. (source: '%s')", name(),
  56                 request_id(),
  57                 params->source.empty() ? "(none)" : params->source.c_str());
  58   }
  59   set_log_on_completion(true);
  60
  61   const base::FilePath path = file_manager::util::GetLocalPathFromURL(
  62       render_view_host(), GetProfile(), GURL(params->source));
  63
  64   if (path.empty())
  65     return false;
  66
  67   // Check if the source path is under Drive cache directory.
  68   if (drive::util::IsUnderDriveMountPoint(path)) {
  69     drive::FileSystemInterface* file_system =
  70         drive::util::GetFileSystemByProfile(GetProfile());
  71     if (!file_system)
  72       return false;
  73
  74     // Ensure that the cache file exists.
  75     const base::FilePath drive_path = drive::util::ExtractDrivePath(path);
  76     file_system->GetFile(
  77         drive_path,
  78         base::Bind(&FileManagerPrivateAddMountFunction::RunAfterGetDriveFile,
  79                    this,
  80                    drive_path));
  81   } else {
  82     file_manager::VolumeManager* volume_manager =
  83         file_manager::VolumeManager::Get(GetProfile());
  84     DCHECK(volume_manager);
  85
  86     bool is_under_downloads = false;
  87     const std::vector<file_manager::VolumeInfo> volumes =
  88         volume_manager->GetVolumeInfoList();
  89     for (size_t i = 0; i < volumes.size(); ++i) {
  90       if (volumes[i].type == file_manager::VOLUME_TYPE_DOWNLOADS_DIRECTORY &&
  91           volumes[i].mount_path.IsParent(path)) {
  92         is_under_downloads = true;
  93         break;
  94       }
  95     }
  96
  97     if (is_under_downloads) {
  98       // For files under downloads, change the file permission and make it
  99       // readable from avfs/fuse if needed.
 100       BrowserThread::PostBlockingPoolTask(
 101           FROM_HERE,
 102           base::Bind(&EnsureReadableFilePermissionOnBlockingPool,
 103                      path,
 104                      google_apis::CreateRelayCallback(
 105                          base::Bind(&FileManagerPrivateAddMountFunction::
 106                                         RunAfterMarkCacheFileAsMounted,
 107                                     this,
 108                                     path.BaseName()))));
 109     } else {
 110       RunAfterMarkCacheFileAsMounted(
 111           path.BaseName(), drive::FILE_ERROR_OK, path);
 112     }
 113   }
 114   return true;
 115 }
 116
 117 void FileManagerPrivateAddMountFunction::RunAfterGetDriveFile(
 118     const base::FilePath& drive_path,
 119     drive::FileError error,
 120     const base::FilePath& cache_path,
 121     scoped_ptr<drive::ResourceEntry> entry) {
 122   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 123
 124   if (error != drive::FILE_ERROR_OK) {
 125     SendResponse(false);
 126     return;
 127   }
 128
 129   drive::FileSystemInterface* const file_system =
 130       drive::util::GetFileSystemByProfile(GetProfile());
 131   if (!file_system) {
 132     SendResponse(false);
 133     return;
 134   }
 135
 136   file_system->MarkCacheFileAsMounted(
 137       drive_path,
 138       base::Bind(
 139           &FileManagerPrivateAddMountFunction::RunAfterMarkCacheFileAsMounted,
 140           this,
 141           drive_path.BaseName()));
 142 }
 143
 144 void FileManagerPrivateAddMountFunction::RunAfterMarkCacheFileAsMounted(
 145     const base::FilePath& display_name,
 146     drive::FileError error,
 147     const base::FilePath& file_path) {
 148   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 149
 150   if (error != drive::FILE_ERROR_OK) {
 151     SendResponse(false);
 152     return;
 153   }
 154
 155   // Pass back the actual source path of the mount point.
 156   SetResult(new base::StringValue(file_path.AsUTF8Unsafe()));
 157   SendResponse(true);
 158
 159   // MountPath() takes a std::string.
 160   DiskMountManager* disk_mount_manager = DiskMountManager::GetInstance();
 161   disk_mount_manager->MountPath(
 162       file_path.AsUTF8Unsafe(),
 163       base::FilePath(display_name.Extension()).AsUTF8Unsafe(),
 164       display_name.AsUTF8Unsafe(),
 165       chromeos::MOUNT_TYPE_ARCHIVE);
 166 }
 167
 168 bool FileManagerPrivateRemoveMountFunction::RunAsync() {
 169   using file_manager_private::RemoveMount::Params;
 170   const scoped_ptr<Params> params(Params::Create(*args_));
 171   EXTENSION_FUNCTION_VALIDATE(params);
 172
 173   drive::EventLogger* logger = file_manager::util::GetLogger(GetProfile());
 174   if (logger) {
 175     logger->Log(logging::LOG_INFO, "%s[%d] called. (volume_id: '%s')", name(),
 176                 request_id(), params->volume_id.c_str());
 177   }
 178   set_log_on_completion(true);
 179
 180   using file_manager::VolumeManager;
 181   using file_manager::VolumeInfo;
 182   VolumeManager* volume_manager = VolumeManager::Get(GetProfile());
 183   DCHECK(volume_manager);
 184
 185   VolumeInfo volume_info;
 186   if (!volume_manager->FindVolumeInfoById(params->volume_id, &volume_info))
 187     return false;
 188
 189   // TODO(tbarzic): Send response when callback is received, it would make more
 190   // sense than remembering issued unmount requests in file manager and showing
 191   // errors for them when MountCompleted event is received.
 192   switch (volume_info.type) {
 193     case file_manager::VOLUME_TYPE_REMOVABLE_DISK_PARTITION:
 194     case file_manager::VOLUME_TYPE_MOUNTED_ARCHIVE_FILE: {
 195       DiskMountManager::GetInstance()->UnmountPath(
 196           volume_info.mount_path.value(),
 197           chromeos::UNMOUNT_OPTIONS_NONE,
 198           DiskMountManager::UnmountPathCallback());
 199       break;
 200     }
 201     case file_manager::VOLUME_TYPE_PROVIDED: {
 202       chromeos::file_system_provider::Service* service =
 203           chromeos::file_system_provider::Service::Get(GetProfile());
 204       DCHECK(service);
 205       // TODO(mtomasz): Pass a more detailed error than just a bool.
 206       if (!service->RequestUnmount(volume_info.extension_id,
 207                                    volume_info.file_system_id)) {
 208         return false;
 209       }
 210       break;
 211     }
 212     default:
 213       // Requested unmounting a device which is not unmountable.
 214       return false;
 215   }
 216
 217   SendResponse(true);
 218   return true;
 219 }
 220
 221 bool FileManagerPrivateGetVolumeMetadataListFunction::RunAsync() {
 222   if (args_->GetSize())
 223     return false;
 224
 225   const std::vector<file_manager::VolumeInfo>& volume_info_list =
 226       file_manager::VolumeManager::Get(GetProfile())->GetVolumeInfoList();
 227
 228   std::string log_string;
 229   std::vector<linked_ptr<file_manager_private::VolumeMetadata> > result;
 230   for (size_t i = 0; i < volume_info_list.size(); ++i) {
 231     linked_ptr<file_manager_private::VolumeMetadata> volume_metadata(
 232         new file_manager_private::VolumeMetadata);
 233     file_manager::util::VolumeInfoToVolumeMetadata(
 234         GetProfile(), volume_info_list[i], volume_metadata.get());
 235     result.push_back(volume_metadata);
 236     if (!log_string.empty())
 237       log_string += ", ";
 238     log_string += volume_info_list[i].mount_path.AsUTF8Unsafe();
 239   }
 240
 241   drive::EventLogger* logger = file_manager::util::GetLogger(GetProfile());
 242   if (logger) {
 243     logger->Log(logging::LOG_INFO,
 244                 "%s[%d] succeeded. (results: '[%s]', %" PRIuS " mount points)",
 245                 name(), request_id(), log_string.c_str(), result.size());
 246   }
 247
 248   results_ =
 249       file_manager_private::GetVolumeMetadataList::Results::Create(result);
 250   SendResponse(true);
 251   return true;
 252 }
 253
 254 }  // namespace extensions