chrome/browser/chromeos/proxy_config_service_impl.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 CHROME_BROWSER_CHROMEOS_PROXY_CONFIG_SERVICE_IMPL_H_
   6 #define CHROME_BROWSER_CHROMEOS_PROXY_CONFIG_SERVICE_IMPL_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/prefs/pref_change_registrar.h"
  13 #include "chromeos/network/network_state_handler_observer.h"
  14 #include "components/onc/onc_constants.h"
  15 #include "components/proxy_config/pref_proxy_config_tracker_impl.h"
  16
  17 namespace chromeos {
  18
  19 class NetworkState;
  20
  21 // Implementation of proxy config service for chromeos that:
  22 // - extends PrefProxyConfigTrackerImpl (and so lives and runs entirely on UI
  23 //   thread) to handle proxy from prefs (via PrefProxyConfigTrackerImpl) and
  24 //   system i.e. network (via shill notifications)
  25 // - exists one per profile and one per local state
  26 // - persists proxy setting per network in flimflim
  27 // - provides network stack with latest effective proxy configuration for
  28 //   currently active network via PrefProxyConfigTrackerImpl's mechanism of
  29 //   pushing config to ChromeProxyConfigService
  30 class ProxyConfigServiceImpl : public PrefProxyConfigTrackerImpl,
  31                                public NetworkStateHandlerObserver {
  32  public:
  33   // ProxyConfigServiceImpl is created in ProxyServiceFactory::
  34   // CreatePrefProxyConfigTrackerImpl via Profile::GetProxyConfigTracker() for
  35   // profile or via IOThread constructor for local state and is owned by the
  36   // respective classes.
  37   //
  38   // The user's proxy config, proxy policies and proxy from prefs, are used to
  39   // determine the effective proxy config, which is then pushed through
  40   // PrefProxyConfigTrackerImpl to ChromeProxyConfigService to the
  41   // network stack.
  42   //
  43   // |profile_prefs| can be NULL if this object should only track prefs from
  44   // local state (e.g., for system request context or sigin-in screen).
  45   explicit ProxyConfigServiceImpl(PrefService* profile_prefs,
  46                                   PrefService* local_state_prefs);
  47   ~ProxyConfigServiceImpl() override;
  48
  49   // PrefProxyConfigTrackerImpl implementation.
  50   void OnProxyConfigChanged(ProxyPrefs::ConfigState config_state,
  51                             const net::ProxyConfig& config) override;
  52
  53   // NetworkStateHandlerObserver implementation.
  54   void DefaultNetworkChanged(const NetworkState* network) override;
  55
  56  protected:
  57   friend class UIProxyConfigService;
  58
  59   // Returns true if proxy is to be ignored for this network profile and
  60   // |onc_source|, e.g. this happens if the network is shared and
  61   // use-shared-proxies is turned off. |profile_prefs| may be NULL.
  62   static bool IgnoreProxy(const PrefService* profile_prefs,
  63                           const std::string network_profile_path,
  64                           onc::ONCSource onc_source);
  65
  66  private:
  67   // Called when any proxy preference changes.
  68   void OnProxyPrefChanged();
  69
  70   // Determines effective proxy config based on prefs from config tracker, the
  71   // current default network and if user is using shared proxies.  The effective
  72   // config is stored in |active_config_| and activated on network stack, and
  73   // hence, picked up by observers.
  74   void DetermineEffectiveConfigFromDefaultNetwork();
  75
  76   // State of |active_config_|.  |active_config_| is only valid if
  77   // |active_config_state_| is not ProxyPrefs::CONFIG_UNSET.
  78   ProxyPrefs::ConfigState active_config_state_;
  79
  80   // Active proxy configuration, which could be from prefs or network.
  81   net::ProxyConfig active_config_;
  82
  83   // Track changes in profile preferences: UseSharedProxies and
  84   // OpenNetworkConfiguration.
  85   PrefChangeRegistrar profile_pref_registrar_;
  86
  87   // Track changes in local state preferences: DeviceOpenNetworkConfiguration.
  88   PrefChangeRegistrar local_state_pref_registrar_;
  89
  90   // Not owned. NULL if tracking only local state prefs (e.g. in the system
  91   // request context or sign-in screen).
  92   PrefService* profile_prefs_;
  93
  94   // Not owned.
  95   PrefService* local_state_prefs_;
  96
  97   base::WeakPtrFactory<ProxyConfigServiceImpl> pointer_factory_;
  98
  99   DISALLOW_COPY_AND_ASSIGN(ProxyConfigServiceImpl);
 100 };
 101
 102 }  // namespace chromeos
 103
 104 #endif  // CHROME_BROWSER_CHROMEOS_PROXY_CONFIG_SERVICE_IMPL_H_