chrome/browser/google/google_update_settings_posix.cc

   1 // Copyright (c) 2011 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/installer/util/google_update_settings.h"
   6
   7 #include "base/file_util.h"
   8 #include "base/lazy_instance.h"
   9 #include "base/path_service.h"
  10 #include "base/strings/string_util.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "base/synchronization/lock.h"
  13 #include "chrome/common/chrome_paths.h"
  14
  15 namespace {
  16
  17 base::LazyInstance<std::string>::Leaky g_posix_client_id =
  18     LAZY_INSTANCE_INITIALIZER;
  19 base::LazyInstance<base::Lock>::Leaky g_posix_client_id_lock =
  20     LAZY_INSTANCE_INITIALIZER;
  21
  22 // File name used in the user data dir to indicate consent.
  23 const char kConsentToSendStats[] = "Consent To Send Stats";
  24
  25 void SetConsentFilePermissionIfNeeded(const base::FilePath& consent_file) {
  26 #if defined(OS_CHROMEOS)
  27   // The consent file needs to be world readable. See http://crbug.com/383003
  28   int permissions;
  29   if (base::GetPosixFilePermissions(consent_file, &permissions) &&
  30       (permissions & base::FILE_PERMISSION_READ_BY_OTHERS) == 0) {
  31     permissions |= base::FILE_PERMISSION_READ_BY_OTHERS;
  32     base::SetPosixFilePermissions(consent_file, permissions);
  33   }
  34 #endif
  35 }
  36
  37 }  // namespace
  38
  39 // static
  40 bool GoogleUpdateSettings::GetCollectStatsConsent() {
  41   base::FilePath consent_file;
  42   PathService::Get(chrome::DIR_USER_DATA, &consent_file);
  43   consent_file = consent_file.Append(kConsentToSendStats);
  44
  45   if (!base::DirectoryExists(consent_file.DirName()))
  46     return false;
  47
  48   std::string tmp_guid;
  49   bool consented = base::ReadFileToString(consent_file, &tmp_guid);
  50   if (consented) {
  51     SetConsentFilePermissionIfNeeded(consent_file);
  52
  53     base::AutoLock lock(g_posix_client_id_lock.Get());
  54     g_posix_client_id.Get().assign(tmp_guid);
  55   }
  56   return consented;
  57 }
  58
  59 // static
  60 bool GoogleUpdateSettings::SetCollectStatsConsent(bool consented) {
  61   base::FilePath consent_dir;
  62   PathService::Get(chrome::DIR_USER_DATA, &consent_dir);
  63   if (!base::DirectoryExists(consent_dir))
  64     return false;
  65
  66   base::AutoLock lock(g_posix_client_id_lock.Get());
  67
  68   base::FilePath consent_file = consent_dir.AppendASCII(kConsentToSendStats);
  69   if (!consented) {
  70     g_posix_client_id.Get().clear();
  71     return base::DeleteFile(consent_file, false);
  72   }
  73
  74   const std::string& client_id = g_posix_client_id.Get();
  75   if (base::PathExists(consent_file) && client_id.empty())
  76     return true;
  77
  78   int size = client_id.size();
  79   bool write_success =
  80       base::WriteFile(consent_file, client_id.c_str(), size) == size;
  81   if (write_success)
  82     SetConsentFilePermissionIfNeeded(consent_file);
  83   return write_success;
  84 }
  85
  86 // static
  87 // TODO(gab): Implement storing/loading for all ClientInfo fields on POSIX.
  88 scoped_ptr<metrics::ClientInfo> GoogleUpdateSettings::LoadMetricsClientInfo() {
  89   scoped_ptr<metrics::ClientInfo> client_info(new metrics::ClientInfo);
  90
  91   base::AutoLock lock(g_posix_client_id_lock.Get());
  92   if (g_posix_client_id.Get().empty())
  93     return scoped_ptr<metrics::ClientInfo>();
  94   client_info->client_id = g_posix_client_id.Get();
  95
  96   return client_info.Pass();
  97 }
  98
  99 // static
 100 // TODO(gab): Implement storing/loading for all ClientInfo fields on POSIX.
 101 void GoogleUpdateSettings::StoreMetricsClientInfo(
 102     const metrics::ClientInfo& client_info) {
 103   // Make sure that user has consented to send crashes.
 104   if (!GoogleUpdateSettings::GetCollectStatsConsent())
 105     return;
 106
 107   {
 108     // Since user has consented, write the metrics id to the file.
 109     base::AutoLock lock(g_posix_client_id_lock.Get());
 110     g_posix_client_id.Get() = client_info.client_id;
 111   }
 112   GoogleUpdateSettings::SetCollectStatsConsent(true);
 113 }
 114
 115 // GetLastRunTime and SetLastRunTime are not implemented for posix. Their
 116 // current return values signal failure which the caller is designed to
 117 // handle.
 118
 119 // static
 120 int GoogleUpdateSettings::GetLastRunTime() {
 121   return -1;
 122 }
 123
 124 // static
 125 bool GoogleUpdateSettings::SetLastRunTime() {
 126   return false;
 127 }