google_update_settings_posix.cc revision 116680a4aac90f2aa7413d9095a592090648e557 
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
15namespace {
16
17base::LazyInstance<std::string>::Leaky g_posix_client_id =
18    LAZY_INSTANCE_INITIALIZER;
19base::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.
23const char kConsentToSendStats[] = "Consent To Send Stats";
24
25}  // namespace
26
27// static
28bool GoogleUpdateSettings::GetCollectStatsConsent() {
29  base::FilePath consent_file;
30  PathService::Get(chrome::DIR_USER_DATA, &consent_file);
31  consent_file = consent_file.Append(kConsentToSendStats);
32
33  if (!base::DirectoryExists(consent_file.DirName()))
34    return false;
35
36  std::string tmp_guid;
37  bool consented = base::ReadFileToString(consent_file, &tmp_guid);
38  if (consented) {
39    base::AutoLock lock(g_posix_client_id_lock.Get());
40    g_posix_client_id.Get().assign(tmp_guid);
41  }
42  return consented;
43}
44
45// static
46bool GoogleUpdateSettings::SetCollectStatsConsent(bool consented) {
47  base::FilePath consent_dir;
48  PathService::Get(chrome::DIR_USER_DATA, &consent_dir);
49  if (!base::DirectoryExists(consent_dir))
50    return false;
51
52  base::AutoLock lock(g_posix_client_id_lock.Get());
53
54  base::FilePath consent_file = consent_dir.AppendASCII(kConsentToSendStats);
55  if (consented) {
56    if ((!base::PathExists(consent_file)) ||
57        (base::PathExists(consent_file) && !g_posix_client_id.Get().empty())) {
58      const char* c_str = g_posix_client_id.Get().c_str();
59      int size = g_posix_client_id.Get().size();
60      return base::WriteFile(consent_file, c_str, size) == size;
61    }
62  } else {
63    g_posix_client_id.Get().clear();
64    return base::DeleteFile(consent_file, false);
65  }
66  return true;
67}
68
69// static
70bool GoogleUpdateSettings::LoadMetricsClientId(std::string* metrics_id) {
71  base::AutoLock lock(g_posix_client_id_lock.Get());
72  *metrics_id = g_posix_client_id.Get();
73  return true;
74}
75
76// static
77bool GoogleUpdateSettings::StoreMetricsClientId(const std::string& client_id) {
78  // Make sure that user has consented to send crashes.
79  if (!GoogleUpdateSettings::GetCollectStatsConsent())
80    return false;
81
82  {
83    // Since user has consented, write the metrics id to the file.
84    base::AutoLock lock(g_posix_client_id_lock.Get());
85    g_posix_client_id.Get() = client_id;
86  }
87  return GoogleUpdateSettings::SetCollectStatsConsent(true);
88}
89
90// GetLastRunTime and SetLastRunTime are not implemented for posix. Their
91// current return values signal failure which the caller is designed to
92// handle.
93
94// static
95int GoogleUpdateSettings::GetLastRunTime() {
96  return -1;
97}
98
99// static
100bool GoogleUpdateSettings::SetLastRunTime() {
101  return false;
102}
103