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   double GetCurrentMaxBandwidth() const override;
  41
  42   // PowerManagerClient::Observer overrides.
  43   void SuspendDone(const base::TimeDelta& sleep_duration) override;
  44
  45   // NetworkStateHandlerObserver overrides.
  46   void DefaultNetworkChanged(
  47       const chromeos::NetworkState* default_network) override;
  48
  49  private:
  50   FRIEND_TEST_ALL_PREFIXES(NetworkChangeNotifierChromeosTest,
  51                            ConnectionTypeFromShill);
  52   friend class NetworkChangeNotifierChromeosUpdateTest;
  53
  54   class DnsConfigService;
  55
  56   // Updates the notifier state based on a default network update.
  57   // |connection_type_changed| is set to true if we must report a connection
  58   // type change.
  59   // |ip_address_changed| is set to true if we must report an IP address change.
  60   // |dns_changed| is set to true if we must report a DNS config change.
  61   // |max_bandwidth_changed| is set to true if we must report a max bandwidth
  62   // change.
  63   void UpdateState(const chromeos::NetworkState* default_network,
  64                    bool* connection_type_changed,
  65                    bool* ip_address_changed,
  66                    bool* dns_changed,
  67                    bool* max_bandwidth_changed);
  68
  69   // Proactively retrieves current network state from the network
  70   // state handler and calls UpdateState with the result.
  71   void PollForState();
  72
  73   // Maps the shill network type and technology to its NetworkChangeNotifier
  74   // equivalent.
  75   static net::NetworkChangeNotifier::ConnectionType
  76       ConnectionTypeFromShill(const std::string& type,
  77                               const std::string& technology);
  78
  79   // Maps the shill network type and technology to its NetworkChangeNotifier
  80   // subtype equivalent.
  81   static net::NetworkChangeNotifier::ConnectionSubtype GetConnectionSubtype(
  82       const std::string& type,
  83       const std::string& technology);
  84
  85   // Calculates parameters used for network change notifier online/offline
  86   // signals.
  87   static net::NetworkChangeNotifier::NetworkChangeCalculatorParams
  88       NetworkChangeCalculatorParamsChromeos();
  89
  90   NetworkChangeNotifier::ConnectionType connection_type_;
  91   // IP address for the current default network.
  92   std::string ip_address_;
  93   // DNS servers for the current default network.
  94   std::vector<std::string> dns_servers_;
  95   // Service path for the current default network.
  96   std::string service_path_;
  97
  98   // The maximum theoretical bandwidth in megabits per second for the current
  99   // default network.
 100   double max_bandwidth_mbps_;
 101
 102   scoped_ptr<DnsConfigService> dns_config_service_;
 103
 104   // Callback for refreshing network state.
 105   base::Closure poll_callback_;
 106
 107   // For setting up network refresh polling callbacks.
 108   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 109   base::WeakPtrFactory<NetworkChangeNotifierChromeos> weak_ptr_factory_;
 110
 111   DISALLOW_COPY_AND_ASSIGN(NetworkChangeNotifierChromeos);
 112 };
 113
 114 }  // namespace chromeos
 115
 116 #endif  // CHROMEOS_NETWORK_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_