src/chrome/browser/chromeos/file_system_provider/mount_path_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/mount_path_util.h"
   6
   7 #include <vector>
   8
   9 #include "base/stl_util.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "chrome/browser/browser_process.h"
  12 #include "chrome/browser/chromeos/file_system_provider/provided_file_system.h"
  13 #include "chrome/browser/chromeos/file_system_provider/service.h"
  14 #include "chrome/browser/chromeos/login/user.h"
  15 #include "chrome/browser/chromeos/login/user_manager.h"
  16 #include "chrome/browser/chromeos/profiles/profile_helper.h"
  17 #include "chrome/browser/profiles/profile.h"
  18 #include "chrome/browser/profiles/profile_manager.h"
  19 #include "content/public/browser/browser_thread.h"
  20
  21 using content::BrowserThread;
  22
  23 namespace chromeos {
  24 namespace file_system_provider {
  25 namespace util {
  26
  27 namespace {
  28
  29 // Root mount path for all of the provided file systems.
  30 const base::FilePath::CharType kProvidedMountPointRoot[] =
  31     FILE_PATH_LITERAL("/provided");
  32
  33 }  // namespace
  34
  35 base::FilePath GetMountPath(Profile* profile,
  36                             std::string extension_id,
  37                             int file_system_id) {
  38   chromeos::User* const user =
  39       chromeos::UserManager::IsInitialized()
  40           ? chromeos::UserManager::Get()->GetUserByProfile(
  41                 profile->GetOriginalProfile())
  42           : NULL;
  43   const std::string user_suffix = user ? "-" + user->username_hash() : "";
  44   return base::FilePath(kProvidedMountPointRoot).AppendASCII(
  45       extension_id + "-" + base::IntToString(file_system_id) + user_suffix);
  46 }
  47
  48 FileSystemURLParser::FileSystemURLParser(const fileapi::FileSystemURL& url)
  49     : url_(url), file_system_(NULL) {
  50 }
  51
  52 FileSystemURLParser::~FileSystemURLParser() {
  53 }
  54
  55 bool FileSystemURLParser::Parse() {
  56   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  57
  58   if (url_.type() != fileapi::kFileSystemTypeProvided)
  59     return false;
  60
  61   // First, find the service handling the mount point of the URL.
  62   const std::vector<Profile*>& profiles =
  63       g_browser_process->profile_manager()->GetLoadedProfiles();
  64
  65   for (size_t i = 0; i < profiles.size(); ++i) {
  66     Profile* original_profile = profiles[i]->GetOriginalProfile();
  67
  68     if (original_profile != profiles[i] ||
  69         chromeos::ProfileHelper::IsSigninProfile(original_profile)) {
  70       continue;
  71     }
  72
  73     Service* service = Service::Get(original_profile);
  74     if (!service)
  75       continue;
  76
  77     ProvidedFileSystemInterface* file_system =
  78         service->GetProvidedFileSystem(url_.filesystem_id());
  79     if (!file_system)
  80       continue;
  81
  82     // Strip the mount point name from the virtual path, to extract the file
  83     // path within the provided file system.
  84     file_system_ = file_system;
  85     std::vector<base::FilePath::StringType> components;
  86     url_.virtual_path().GetComponents(&components);
  87     DCHECK_LT(0u, components.size());
  88     file_path_ = base::FilePath::FromUTF8Unsafe("/");
  89     for (size_t i = 1; i < components.size(); ++i) {
  90       // TODO(mtomasz): This could be optimized, to avoid unnecessary copies.
  91       file_path_ = file_path_.Append(components[i]);
  92     }
  93
  94     return true;
  95   }
  96
  97   // Nothing has been found.
  98   return false;
  99 }
 100
 101 }  // namespace util
 102 }  // namespace file_system_provider
 103 }  // namespace chromeos