1// Copyright (c) 2011 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_POLICY_CONFIGURATION_POLICY_STORE_INTERFACE_H_
6#define CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_STORE_INTERFACE_H_
7#pragma once
8
9#include "base/basictypes.h"
10#include "base/compiler_specific.h"
11#include "policy/configuration_policy_type.h"
12
13class Value;
14
15namespace policy {
16
17// Constants for the "Proxy Server Mode" defined in the policies.
18// Note that these diverge from internal presentation defined in
19// ProxyPrefs::ProxyMode for legacy reasons. The following four
20// PolicyProxyModeType types were not very precise and had overlapping use
21// cases.
22enum PolicyProxyModeType {
23  // Disable Proxy, connect directly.
24  kPolicyNoProxyServerMode = 0,
25  // Auto detect proxy or use specific PAC script if given.
26  kPolicyAutoDetectProxyServerMode = 1,
27  // Use manually configured proxy servers (fixed servers).
28  kPolicyManuallyConfiguredProxyServerMode = 2,
29  // Use system proxy server.
30  kPolicyUseSystemProxyServerMode = 3,
31
32  MODE_COUNT
33};
34
35// An abstract super class for policy stores that provides a method that can be
36// called by a |ConfigurationPolicyProvider| to specify a policy.
37class ConfigurationPolicyStoreInterface {
38 public:
39  virtual ~ConfigurationPolicyStoreInterface() {}
40
41  // A |ConfigurationPolicyProvider| specifies the value of a policy
42  // setting through a call to |Apply|.  The configuration policy pref
43  // store takes over the ownership of |value|.
44  virtual void Apply(ConfigurationPolicyType policy, Value* value) = 0;
45
46 protected:
47  ConfigurationPolicyStoreInterface() {}
48
49 private:
50  DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyStoreInterface);
51};
52
53// Helper class. A pass-through ConfigurationPolicyStoreInterface, that observes
54// the application of well-known policies.
55class ObservingPolicyStoreInterface: public ConfigurationPolicyStoreInterface {
56 public:
57  explicit ObservingPolicyStoreInterface(
58      ConfigurationPolicyStoreInterface* next)
59      : next_(next),
60        proxy_policy_applied_(false) {}
61
62  // ConfigurationPolicyStoreInterface methods:
63  virtual void Apply(ConfigurationPolicyType policy, Value* value) OVERRIDE;
64
65  bool IsProxyPolicyApplied() const {
66    return proxy_policy_applied_;
67  }
68
69 private:
70  ConfigurationPolicyStoreInterface* next_;
71  bool proxy_policy_applied_;
72
73  DISALLOW_COPY_AND_ASSIGN(ObservingPolicyStoreInterface);
74};
75
76// Helper class. A ConfigurationPolicyStoreInterface that filters out most
77// policies, and only applies well-known policies.
78class FilteringPolicyStoreInterface: public ConfigurationPolicyStoreInterface {
79 public:
80  FilteringPolicyStoreInterface(ConfigurationPolicyStoreInterface* next,
81                                bool apply_proxy_policies)
82      : next_(next),
83        apply_proxy_policies_(apply_proxy_policies) {}
84
85  // ConfigurationPolicyStoreInterface methods:
86  virtual void Apply(ConfigurationPolicyType policy, Value* value) OVERRIDE;
87
88 private:
89  ConfigurationPolicyStoreInterface* next_;
90  bool apply_proxy_policies_;
91
92  DISALLOW_COPY_AND_ASSIGN(FilteringPolicyStoreInterface);
93};
94
95}  // namespace policy
96
97#endif  // CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_STORE_INTERFACE_H_
98