proxy_config_service_impl.h revision 868fa2fe829687343ffae624259930155e16dbd8 
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_member.h"
13#include "chrome/browser/net/pref_proxy_config_tracker_impl.h"
14#include "chromeos/network/network_state_handler_observer.h"
15#include "chromeos/network/onc/onc_constants.h"
16
17class PrefRegistrySimple;
18
19namespace user_prefs {
20class PrefRegistrySyncable;
21}
22
23namespace chromeos {
24
25class NetworkState;
26
27// Implementation of proxy config service for chromeos that:
28// - extends PrefProxyConfigTrackerImpl (and so lives and runs entirely on UI
29//   thread) to handle proxy from prefs (via PrefProxyConfigTrackerImpl) and
30//   system i.e. network (via shill notifications)
31// - exists one per profile and one per local state
32// - persists proxy setting per network in flimflim
33// - provides network stack with latest effective proxy configuration for
34//   currently active network via PrefProxyConfigTrackerImpl's mechanism of
35//   pushing config to ChromeProxyConfigService
36class ProxyConfigServiceImpl : public PrefProxyConfigTrackerImpl,
37                               public NetworkStateHandlerObserver {
38 public:
39  // ProxyConfigServiceImpl is created in ProxyServiceFactory::
40  // CreatePrefProxyConfigTrackerImpl via Profile::GetProxyConfigTracker() for
41  // profile or IOThread constructor for local state and is owned by the
42  // respective classes.
43  //
44  // The new modified proxy config, together with proxy from prefs if available,
45  // are used to determine the effective proxy config, which is then pushed
46  // through PrefProxyConfigTrackerImpl to ChromeProxyConfigService to the
47  // network stack.
48  explicit ProxyConfigServiceImpl(PrefService* pref_service);
49  virtual ~ProxyConfigServiceImpl();
50
51  // PrefProxyConfigTrackerImpl implementation.
52  virtual void OnProxyConfigChanged(ProxyPrefs::ConfigState config_state,
53                                    const net::ProxyConfig& config) OVERRIDE;
54
55  // NetworkStateHandlerObserver implementation.
56  virtual void DefaultNetworkChanged(const NetworkState* network) OVERRIDE;
57
58  // Register UseShardProxies preference.
59  static void RegisterPrefs(PrefRegistrySimple* registry);
60  static void RegisterUserPrefs(user_prefs::PrefRegistrySyncable* registry);
61
62 protected:
63  friend class UIProxyConfigService;
64
65  // Returns value of UseSharedProxies preference if it's not default, else
66  // returns false if user is logged in and true otherwise.
67  static bool GetUseSharedProxies(const PrefService* pref_service);
68
69  // Returns true if proxy is to be ignored for this profile and |onc_source|,
70  // e.g. this happens if the network is shared and use-shared-proxies is turned
71  // off.
72  static bool IgnoreProxy(const PrefService* pref_service,
73                          const std::string network_profile_path,
74                          onc::ONCSource onc_source);
75
76 private:
77  // Called when the kUseSharedProxies preference changes.
78  void OnUseSharedProxiesChanged();
79
80  // Determines effective proxy config based on prefs from config tracker, the
81  // current default network and if user is using shared proxies.  The effective
82  // config is stored in |active_config_| and activated on network stack, and
83  // hence, picked up by observers.
84  void DetermineEffectiveConfigFromDefaultNetwork();
85
86  // State of |active_config_|.  |active_config_| is only valid if
87  // |active_config_state_| is not ProxyPrefs::CONFIG_UNSET.
88  ProxyPrefs::ConfigState active_config_state_;
89
90  // Active proxy configuration, which could be from prefs or network.
91  net::ProxyConfig active_config_;
92
93  // Track changes in UseSharedProxies user preference.
94  BooleanPrefMember use_shared_proxies_;
95
96  base::WeakPtrFactory<ProxyConfigServiceImpl> pointer_factory_;
97
98  DISALLOW_COPY_AND_ASSIGN(ProxyConfigServiceImpl);
99};
100
101}  // namespace chromeos
102
103#endif  // CHROME_BROWSER_CHROMEOS_PROXY_CONFIG_SERVICE_IMPL_H_
104