chrome/browser/prefs/incognito_mode_prefs.cc

   1 // Copyright (c) 2012 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/prefs/incognito_mode_prefs.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/logging.h"
   9 #include "base/prefs/pref_service.h"
  10 #include "chrome/browser/profiles/profile.h"
  11 #include "chrome/common/chrome_switches.h"
  12 #include "chrome/common/pref_names.h"
  13 #include "components/user_prefs/pref_registry_syncable.h"
  14
  15 #if defined(OS_WIN)
  16 #include "base/win/metro.h"
  17 #endif  // OS_WIN
  18
  19 #if defined(OS_ANDROID)
  20 #include "chrome/browser/android/chromium_application.h"
  21 #endif  // OS_ANDROID
  22
  23 // static
  24 bool IncognitoModePrefs::IntToAvailability(int in_value,
  25                                            Availability* out_value) {
  26   if (in_value < 0 || in_value >= AVAILABILITY_NUM_TYPES) {
  27     *out_value = ENABLED;
  28     return false;
  29   }
  30   *out_value = static_cast<Availability>(in_value);
  31   return true;
  32 }
  33
  34 // static
  35 IncognitoModePrefs::Availability IncognitoModePrefs::GetAvailability(
  36     const PrefService* pref_service) {
  37   DCHECK(pref_service);
  38   int pref_value = pref_service->GetInteger(prefs::kIncognitoModeAvailability);
  39   Availability result = IncognitoModePrefs::ENABLED;
  40   bool valid = IntToAvailability(pref_value, &result);
  41   DCHECK(valid);
  42   if (ArePlatformParentalControlsEnabled()) {
  43     if (result == IncognitoModePrefs::FORCED)
  44       LOG(ERROR) << "Ignoring FORCED incognito. Parental control logging on";
  45     return IncognitoModePrefs::DISABLED;
  46   }
  47   return result;
  48 }
  49
  50 // static
  51 void IncognitoModePrefs::SetAvailability(PrefService* prefs,
  52                                          const Availability availability) {
  53   prefs->SetInteger(prefs::kIncognitoModeAvailability, availability);
  54 }
  55
  56 // static
  57 void IncognitoModePrefs::RegisterProfilePrefs(
  58     user_prefs::PrefRegistrySyncable* registry) {
  59   registry->RegisterIntegerPref(
  60       prefs::kIncognitoModeAvailability,
  61       IncognitoModePrefs::ENABLED,
  62       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
  63 }
  64
  65 // static
  66 bool IncognitoModePrefs::ShouldLaunchIncognito(
  67     const CommandLine& command_line,
  68     const PrefService* prefs) {
  69   Availability incognito_avail = GetAvailability(prefs);
  70   return incognito_avail != IncognitoModePrefs::DISABLED &&
  71          (command_line.HasSwitch(switches::kIncognito) ||
  72           incognito_avail == IncognitoModePrefs::FORCED);
  73 }
  74
  75 // static
  76 bool IncognitoModePrefs::CanOpenBrowser(Profile* profile) {
  77   switch (GetAvailability(profile->GetPrefs())) {
  78     case IncognitoModePrefs::ENABLED:
  79       return true;
  80     case IncognitoModePrefs::DISABLED:
  81       return !profile->IsOffTheRecord();
  82     case IncognitoModePrefs::FORCED:
  83       return profile->IsOffTheRecord();
  84     case IncognitoModePrefs::AVAILABILITY_NUM_TYPES:
  85       NOTREACHED();
  86   }
  87   NOTREACHED();
  88   return false;
  89 }
  90
  91 // static
  92 bool IncognitoModePrefs::ArePlatformParentalControlsEnabled() {
  93 #if defined(OS_WIN)
  94   // Disable incognito mode windows if parental controls are on. This is only
  95   // for Windows Vista and above.
  96   return base::win::IsParentalControlActivityLoggingOn();
  97 #elif defined(OS_ANDROID)
  98   return chrome::android::ChromiumApplication::AreParentalControlsEnabled();
  99 #endif
 100   return false;
 101 }