components/signin/core/browser/signin_client.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 "components/signin/core/browser/signin_client.h"
   6
   7 #include "base/guid.h"
   8 #include "base/logging.h"
   9 #include "base/prefs/pref_service.h"
  10 #include "components/signin/core/common/signin_pref_names.h"
  11
  12 namespace {
  13 const char kEphemeralUserDeviceIDPrefix[] = "t_";
  14 }
  15
  16 // static
  17 std::string SigninClient::GenerateSigninScopedDeviceID(bool for_ephemeral) {
  18   std::string guid = base::GenerateGUID();
  19   return for_ephemeral ? kEphemeralUserDeviceIDPrefix + guid : guid;
  20 }
  21
  22 std::string SigninClient::GetOrCreateScopedDeviceIdPref(PrefService* prefs) {
  23   std::string signin_scoped_device_id =
  24       prefs->GetString(prefs::kGoogleServicesSigninScopedDeviceId);
  25   if (signin_scoped_device_id.empty()) {
  26     // If device_id doesn't exist then generate new and save in prefs.
  27     signin_scoped_device_id = GenerateSigninScopedDeviceID(false);
  28     DCHECK(!signin_scoped_device_id.empty());
  29     prefs->SetString(prefs::kGoogleServicesSigninScopedDeviceId,
  30                      signin_scoped_device_id);
  31   }
  32   return signin_scoped_device_id;
  33 }
  34
  35 void SigninClient::SignOut() {
  36   GetPrefs()->ClearPref(prefs::kGoogleServicesSigninScopedDeviceId);
  37   OnSignedOut();
  38 }