net/base/network_change_notifier_mac.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 NET_BASE_NETWORK_CHANGE_NOTIFIER_MAC_H_
   6 #define NET_BASE_NETWORK_CHANGE_NOTIFIER_MAC_H_
   7
   8 #include <SystemConfiguration/SystemConfiguration.h>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/mac/scoped_cftyperef.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/synchronization/condition_variable.h"
  15 #include "base/synchronization/lock.h"
  16 #include "net/base/network_change_notifier.h"
  17 #include "net/base/network_config_watcher_mac.h"
  18
  19 namespace net {
  20
  21 class NetworkChangeNotifierMac: public NetworkChangeNotifier {
  22  public:
  23   NetworkChangeNotifierMac();
  24   virtual ~NetworkChangeNotifierMac();
  25
  26   // NetworkChangeNotifier implementation:
  27   virtual ConnectionType GetCurrentConnectionType() const OVERRIDE;
  28
  29   // Forwarder just exists to keep the NetworkConfigWatcherMac API out of
  30   // NetworkChangeNotifierMac's public API.
  31   class Forwarder : public NetworkConfigWatcherMac::Delegate {
  32    public:
  33     explicit Forwarder(NetworkChangeNotifierMac* net_config_watcher)
  34         : net_config_watcher_(net_config_watcher) {}
  35
  36     // NetworkConfigWatcherMac::Delegate implementation:
  37     virtual void Init() OVERRIDE;
  38     virtual void StartReachabilityNotifications() OVERRIDE;
  39     virtual void SetDynamicStoreNotificationKeys(
  40         SCDynamicStoreRef store) OVERRIDE;
  41     virtual void OnNetworkConfigChange(CFArrayRef changed_keys) OVERRIDE;
  42
  43    private:
  44     NetworkChangeNotifierMac* const net_config_watcher_;
  45     DISALLOW_COPY_AND_ASSIGN(Forwarder);
  46   };
  47
  48  private:
  49   class DnsConfigServiceThread;
  50
  51   // Methods directly called by the NetworkConfigWatcherMac::Delegate:
  52   void StartReachabilityNotifications();
  53   void SetDynamicStoreNotificationKeys(SCDynamicStoreRef store);
  54   void OnNetworkConfigChange(CFArrayRef changed_keys);
  55
  56   void SetInitialConnectionType();
  57
  58   static void ReachabilityCallback(SCNetworkReachabilityRef target,
  59                                    SCNetworkConnectionFlags flags,
  60                                    void* notifier);
  61
  62   static NetworkChangeCalculatorParams NetworkChangeCalculatorParamsMac();
  63
  64   // These must be constructed before config_watcher_ to ensure
  65   // the lock is in a valid state when Forwarder::Init is called.
  66   ConnectionType connection_type_;
  67   bool connection_type_initialized_;
  68   mutable base::Lock connection_type_lock_;
  69   mutable base::ConditionVariable initial_connection_type_cv_;
  70   base::ScopedCFTypeRef<SCNetworkReachabilityRef> reachability_;
  71   base::ScopedCFTypeRef<CFRunLoopRef> run_loop_;
  72
  73   Forwarder forwarder_;
  74   scoped_ptr<const NetworkConfigWatcherMac> config_watcher_;
  75
  76   scoped_ptr<DnsConfigServiceThread> dns_config_service_thread_;
  77
  78   DISALLOW_COPY_AND_ASSIGN(NetworkChangeNotifierMac);
  79 };
  80
  81 }  // namespace net
  82
  83 #endif  // NET_BASE_NETWORK_CHANGE_NOTIFIER_MAC_H_