chromeos/network/network_change_notifier_chromeos.h

   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 #ifndef CHROMEOS_NETWORK_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_
   6 #define CHROMEOS_NETWORK_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/callback.h"
  12 #include "base/gtest_prod_util.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "base/single_thread_task_runner.h"
  16 #include "chromeos/chromeos_export.h"
  17 #include "chromeos/dbus/power_manager_client.h"
  18 #include "chromeos/network/network_state_handler_observer.h"
  19 #include "net/base/network_change_notifier.h"
  20
  21 namespace chromeos {
  22
  23 class CHROMEOS_EXPORT NetworkChangeNotifierChromeos
  24     : public net::NetworkChangeNotifier,
  25       public chromeos::PowerManagerClient::Observer,
  26       public chromeos::NetworkStateHandlerObserver {
  27  public:
  28   NetworkChangeNotifierChromeos();
  29   ~NetworkChangeNotifierChromeos() override;
  30
  31   // Starts observing changes from the network state handler.
  32   void Initialize();
  33
  34   // Stops observing changes from the network state handler.
  35   void Shutdown();
  36
  37   // NetworkChangeNotifier overrides.
  38   net::NetworkChangeNotifier::ConnectionType GetCurrentConnectionType()
  39       const override;
  40   void GetCurrentMaxBandwidthAndConnectionType(
  41       double* max_bandwidth_mbps,
  42       ConnectionType* connection_type) const override;
  43
  44   // PowerManagerClient::Observer overrides.
  45   void SuspendDone(const base::TimeDelta& sleep_duration) override;
  46
  47   // NetworkStateHandlerObserver overrides.
  48   void DefaultNetworkChanged(
  49       const chromeos::NetworkState* default_network) override;
  50
  51  private:
  52   FRIEND_TEST_ALL_PREFIXES(NetworkChangeNotifierChromeosTest,
  53                            ConnectionTypeFromShill);
  54   friend class NetworkChangeNotifierChromeosUpdateTest;
  55
  56   class DnsConfigService;
  57
  58   // Updates the notifier state based on a default network update.
  59   // |connection_type_changed| is set to true if we must report a connection
  60   // type change.
  61   // |ip_address_changed| is set to true if we must report an IP address change.
  62   // |dns_changed| is set to true if we must report a DNS config change.
  63   // |max_bandwidth_changed| is set to true if we must report a max bandwidth
  64   // change.
  65   void UpdateState(const chromeos::NetworkState* default_network,
  66                    bool* connection_type_changed,
  67                    bool* ip_address_changed,
  68                    bool* dns_changed,
  69                    bool* max_bandwidth_changed);
  70
  71   // Proactively retrieves current network state from the network
  72   // state handler and calls UpdateState with the result.
  73   void PollForState();
  74
  75   // Maps the shill network type and technology to its NetworkChangeNotifier
  76   // equivalent.
  77   static net::NetworkChangeNotifier::ConnectionType
  78       ConnectionTypeFromShill(const std::string& type,
  79                               const std::string& technology);
  80
  81   // Maps the shill network type and technology to its NetworkChangeNotifier
  82   // subtype equivalent.
  83   static net::NetworkChangeNotifier::ConnectionSubtype GetConnectionSubtype(
  84       const std::string& type,
  85       const std::string& technology);
  86
  87   // Calculates parameters used for network change notifier online/offline
  88   // signals.
  89   static net::NetworkChangeNotifier::NetworkChangeCalculatorParams
  90       NetworkChangeCalculatorParamsChromeos();
  91
  92   NetworkChangeNotifier::ConnectionType connection_type_;
  93   // IP address for the current default network.
  94   std::string ip_address_;
  95   // DNS servers for the current default network.
  96   std::vector<std::string> dns_servers_;
  97   // Service path for the current default network.
  98   std::string service_path_;
  99
 100   // The maximum theoretical bandwidth in megabits per second for the current
 101   // default network.
 102   double max_bandwidth_mbps_;
 103
 104   scoped_ptr<DnsConfigService> dns_config_service_;
 105
 106   // Callback for refreshing network state.
 107   base::Closure poll_callback_;
 108
 109   // For setting up network refresh polling callbacks.
 110   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 111   base::WeakPtrFactory<NetworkChangeNotifierChromeos> weak_ptr_factory_;
 112
 113   DISALLOW_COPY_AND_ASSIGN(NetworkChangeNotifierChromeos);
 114 };
 115
 116 }  // namespace chromeos
 117
 118 #endif  // CHROMEOS_NETWORK_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_