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      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/gtest_prod_util.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #include "chromeos/chromeos_export.h"
     14 #include "chromeos/dbus/power_manager_client.h"
     15 #include "chromeos/network/network_state_handler_observer.h"
     16 #include "net/base/network_change_notifier.h"
     17 
     18 namespace chromeos {
     19 
     20 class CHROMEOS_EXPORT NetworkChangeNotifierChromeos
     21     : public net::NetworkChangeNotifier,
     22       public chromeos::PowerManagerClient::Observer,
     23       public chromeos::NetworkStateHandlerObserver {
     24  public:
     25   NetworkChangeNotifierChromeos();
     26   virtual ~NetworkChangeNotifierChromeos();
     27 
     28   // Starts observing changes from the network state handler.
     29   void Initialize();
     30 
     31   // Stops observing changes from the network state handler.
     32   void Shutdown();
     33 
     34   // NetworkChangeNotifier overrides.
     35   virtual net::NetworkChangeNotifier::ConnectionType
     36       GetCurrentConnectionType() const OVERRIDE;
     37 
     38   // PowerManagerClient::Observer overrides.
     39   virtual void SystemResumed(const base::TimeDelta& sleep_duration) OVERRIDE;
     40 
     41   // NetworkStateHandlerObserver overrides.
     42   virtual void DefaultNetworkChanged(
     43       const chromeos::NetworkState* default_network) OVERRIDE;
     44 
     45  private:
     46   FRIEND_TEST_ALL_PREFIXES(NetworkChangeNotifierChromeosTest,
     47                            ConnectionTypeFromShill);
     48   friend class NetworkChangeNotifierChromeosUpdateTest;
     49 
     50   class DnsConfigService;
     51 
     52   // Updates the notifier state based on a default network update.
     53   // |connection_type_changed| is set to true if we must report a connection
     54   // type change.
     55   // |ip_address_changed| is set to true if we must report an IP address change.
     56   // |dns_changed| is set to true if we must report a DNS config change.
     57   void UpdateState(const chromeos::NetworkState* default_network,
     58                    bool* connection_type_changed,
     59                    bool* ip_address_changed,
     60                    bool* dns_changed);
     61 
     62   // Maps the shill network type and technology to its NetworkChangeNotifier
     63   // equivalent.
     64   static net::NetworkChangeNotifier::ConnectionType
     65       ConnectionTypeFromShill(const std::string& type,
     66                               const std::string& technology);
     67 
     68   // Calculates parameters used for network change notifier online/offline
     69   // signals.
     70   static net::NetworkChangeNotifier::NetworkChangeCalculatorParams
     71       NetworkChangeCalculatorParamsChromeos();
     72 
     73   NetworkChangeNotifier::ConnectionType connection_type_;
     74   // IP address for the current default network.
     75   std::string ip_address_;
     76   // DNS servers for the current default network.
     77   std::vector<std::string> dns_servers_;
     78   // Service path for the current default network.
     79   std::string service_path_;
     80 
     81   scoped_ptr<DnsConfigService> dns_config_service_;
     82 
     83   DISALLOW_COPY_AND_ASSIGN(NetworkChangeNotifierChromeos);
     84 };
     85 
     86 }  // namespace chromeos
     87 
     88 #endif  // CHROMEOS_NETWORK_NETWORK_CHANGE_NOTIFIER_CHROMEOS_H_
     89