ChromeOS: Add SystemTimezoneAutomaticDetection policy.

chrome/browser/chromeos/system/timezone_resolver_manager.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/system/timezone_resolver_manager.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/preferences.h"
 #include "chrome/browser/chromeos/system/timezone_util.h"
 #include "chrome/common/pref_names.h"
 #include "chromeos/chromeos_switches.h"
 #include "components/prefs/pref_service.h"
 
 namespace chromeos {
 namespace system {
 
 namespace {
 
 // This is the result of several methods calculating configured
 // time zone resolve processes.
 enum ServiceConfiguration {
   UNSPECIFIED = 0,   // Try another configuration source.
   SHOULD_START = 1,  // This source requires service Start.
   SHOULD_STOP = 2,   // This source requires service Stop.
 };
 
+// Starts or stops TimezoneResolver if required by
+// SystemTimezoneAutomaticDetectionPolicy.
+// Returns SHOULD_* if timezone resolver status is controlled by this policy.
+ServiceConfiguration GetServiceConfigurationFromAutomaticDetectionPolicy() {
+  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
+          chromeos::switches::kEnableSystemTimezoneAutomaticDetectionPolicy)) {
+    return UNSPECIFIED;
+  }
+
+  PrefService* local_state = g_browser_process->local_state();
+  const bool is_managed = local_state->IsManagedPreference(
+      prefs::kSystemTimezoneAutomaticDetectionPolicy);
+  if (!is_managed)
+    return UNSPECIFIED;
+
+  int policy_value =
+      local_state->GetInteger(prefs::kSystemTimezoneAutomaticDetectionPolicy);
+
+  if (policy_value ==
+      ResolveDeviceTimezoneByGeolocationPolicyValues::USERS_DECIDE) {
+    return UNSPECIFIED;
+  }
+
+  if (policy_value ==
+      ResolveDeviceTimezoneByGeolocationPolicyValues::DISABLED) {
+    return SHOULD_STOP;
+  } else if (policy_value ==
+             ResolveDeviceTimezoneByGeolocationPolicyValues::IP_ONLY) {
+    return SHOULD_START;
+  } else if (policy_value == ResolveDeviceTimezoneByGeolocationPolicyValues::
+                                 SEND_WIFI_ACCESS_POINTS) {
+    return SHOULD_START;
+  }
+  // Default for unknown policy value.
+  NOTREACHED() << "Unrecognized policy value: " << policy_value;
+  return SHOULD_STOP;
+}
+
 // Stops TimezoneResolver if SystemTimezonePolicy is applied.
 // Returns SHOULD_* if timezone resolver status is controlled by this policy.
 ServiceConfiguration GetServiceConfigurationFromSystemTimezonePolicy() {
   if (!HasSystemTimezonePolicy())
     return UNSPECIFIED;
 
   return SHOULD_STOP;
 }
 
 // Starts or stops TimezoneResolver if required by policy.
 // Returns true if timezone resolver status is controlled by policy.
 ServiceConfiguration GetServiceConfigurationFromPolicy() {
   ServiceConfiguration result =
       GetServiceConfigurationFromSystemTimezonePolicy();
 
   if (result != UNSPECIFIED)
     return result;
 
+  result = GetServiceConfigurationFromAutomaticDetectionPolicy();
   return result;
 }
 
 // Returns service configuration for the user.
 ServiceConfiguration GetServiceConfigurationFromUserPrefs(
     PrefService* user_prefs) {
   const bool value =
       user_prefs->GetBoolean(prefs::kResolveTimezoneByGeolocation);
   if (value)
     return SHOULD_START;
@@ skipping 14 matching lines @@
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kLoginUser))
     return SHOULD_STOP;
 
   return SHOULD_START;
 }
 
 }  // anonymous namespace.
 
 TimeZoneResolverManager::TimeZoneResolverManager()
     : primary_user_prefs_(nullptr) {
+  local_state_pref_change_registrar_.Init(g_browser_process->local_state());
+  local_state_pref_change_registrar_.Add(
+      prefs::kSystemTimezoneAutomaticDetectionPolicy,
+      base::Bind(
+          &::chromeos::system::TimeZoneResolverManager::UpdateTimezoneResolver,
+          base::Unretained(this)));
 }
 
 TimeZoneResolverManager::~TimeZoneResolverManager() {}
 
 void TimeZoneResolverManager::SetPrimaryUserPrefs(PrefService* pref_service) {
   primary_user_prefs_ = pref_service;
 }
 
 bool TimeZoneResolverManager::ShouldSendWiFiGeolocationData() {
-  return false;
+  PrefService* local_state = g_browser_process->local_state();
+  const bool is_managed = local_state->IsManagedPreference(
+      prefs::kSystemTimezoneAutomaticDetectionPolicy);
+  if (!is_managed)
+    return false;
+
+  int policy_value =
+      local_state->GetInteger(prefs::kSystemTimezoneAutomaticDetectionPolicy);
+
+  DCHECK(policy_value <
+         ResolveDeviceTimezoneByGeolocationPolicyValues::NUM_ELEMENTS);
+
+  return policy_value == ResolveDeviceTimezoneByGeolocationPolicyValues::
+                             SEND_WIFI_ACCESS_POINTS;
 }
 
 void TimeZoneResolverManager::UpdateTimezoneResolver() {
   if (IsTimeZoneResolverShouldBeRunnig())
     g_browser_process->platform_part()->GetTimezoneResolver()->Start();
   else
     g_browser_process->platform_part()->GetTimezoneResolver()->Stop();
 }
 
 bool TimeZoneResolverManager::ShouldApplyResolvedTimezone() {
@@ skipping 15 matching lines @@
     } else {
       // We are on a signin page.
       result = GetServiceConfigurationForSigninScreen();
     }
   }
   return result == SHOULD_START;
 }
 
 }  // namespace system
 }  // namespace chromeos