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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef COMPONENTS_USER_PREFS_TRACKED_PREF_HASH_FILTER_H_ | 5 #ifndef COMPONENTS_USER_PREFS_TRACKED_PREF_HASH_FILTER_H_ |
6 #define COMPONENTS_USER_PREFS_TRACKED_PREF_HASH_FILTER_H_ | 6 #define COMPONENTS_USER_PREFS_TRACKED_PREF_HASH_FILTER_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 | 9 |
10 #include <map> | 10 #include <map> |
11 #include <memory> | 11 #include <memory> |
12 #include <set> | 12 #include <set> |
13 #include <unordered_map> | 13 #include <unordered_map> |
14 #include <vector> | 14 #include <vector> |
15 | 15 |
16 #include "base/callback.h" | 16 #include "base/callback.h" |
17 #include "base/compiler_specific.h" | 17 #include "base/compiler_specific.h" |
18 #include "base/files/file_path.h" | 18 #include "base/files/file_path.h" |
19 #include "base/macros.h" | 19 #include "base/macros.h" |
20 #include "base/optional.h" | 20 #include "base/optional.h" |
21 #include "components/user_prefs/tracked/hash_store_contents.h" | 21 #include "components/user_prefs/tracked/hash_store_contents.h" |
22 #include "components/user_prefs/tracked/interceptable_pref_filter.h" | 22 #include "components/user_prefs/tracked/interceptable_pref_filter.h" |
23 #include "components/user_prefs/tracked/tracked_preference.h" | 23 #include "components/user_prefs/tracked/tracked_preference.h" |
| 24 #include "services/preferences/public/interfaces/preferences.mojom-shared.h" |
24 | 25 |
25 class PrefHashStore; | 26 class PrefHashStore; |
26 class PrefService; | 27 class PrefService; |
27 | 28 |
28 namespace base { | 29 namespace base { |
29 class DictionaryValue; | 30 class DictionaryValue; |
30 class Time; | 31 class Time; |
31 } // namespace base | 32 } // namespace base |
32 | 33 |
33 namespace prefs { | 34 namespace prefs { |
34 namespace mojom { | 35 namespace mojom { |
35 class TrackedPreferenceValidationDelegate; | 36 class TrackedPreferenceValidationDelegate; |
36 } | 37 } |
37 } | 38 } |
38 | 39 |
39 namespace user_prefs { | 40 namespace user_prefs { |
40 class PrefRegistrySyncable; | 41 class PrefRegistrySyncable; |
41 } // namespace user_prefs | 42 } // namespace user_prefs |
42 | 43 |
43 // Intercepts preference values as they are loaded from disk and verifies them | 44 // Intercepts preference values as they are loaded from disk and verifies them |
44 // using a PrefHashStore. Keeps the PrefHashStore contents up to date as values | 45 // using a PrefHashStore. Keeps the PrefHashStore contents up to date as values |
45 // are changed. | 46 // are changed. |
46 class PrefHashFilter : public InterceptablePrefFilter { | 47 class PrefHashFilter : public InterceptablePrefFilter { |
47 public: | 48 public: |
48 enum EnforcementLevel { NO_ENFORCEMENT, ENFORCE_ON_LOAD }; | 49 using EnforcementLevel = |
49 | 50 prefs::mojom::TrackedPreferenceMetadata_EnforcementLevel; |
50 enum PrefTrackingStrategy { | 51 using PrefTrackingStrategy = |
51 // Atomic preferences are tracked as a whole. | 52 prefs::mojom::TrackedPreferenceMetadata_PrefTrackingStrategy; |
52 TRACKING_STRATEGY_ATOMIC, | 53 using ValueType = prefs::mojom::TrackedPreferenceMetadata_ValueType; |
53 // Split preferences are dictionaries for which each top-level entry is | |
54 // tracked independently. Note: preferences using this strategy must be kept | |
55 // in sync with TrackedSplitPreferences in histograms.xml. | |
56 TRACKING_STRATEGY_SPLIT, | |
57 }; | |
58 | |
59 enum ValueType { | |
60 VALUE_IMPERSONAL, | |
61 // The preference value may contain personal information. | |
62 VALUE_PERSONAL, | |
63 }; | |
64 | 54 |
65 struct TrackedPreferenceMetadata { | 55 struct TrackedPreferenceMetadata { |
66 size_t reporting_id; | 56 size_t reporting_id; |
67 const char* name; | 57 const char* name; |
68 EnforcementLevel enforcement_level; | 58 EnforcementLevel enforcement_level; |
69 PrefTrackingStrategy strategy; | 59 PrefTrackingStrategy strategy; |
70 ValueType value_type; | 60 ValueType value_type; |
71 }; | 61 }; |
72 | 62 |
73 using StoreContentsPair = std::pair<std::unique_ptr<PrefHashStore>, | 63 using StoreContentsPair = std::pair<std::unique_ptr<PrefHashStore>, |
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157 using ChangedPathsMap = std::map<std::string, const TrackedPreference*>; | 147 using ChangedPathsMap = std::map<std::string, const TrackedPreference*>; |
158 | 148 |
159 std::unique_ptr<PrefHashStore> pref_hash_store_; | 149 std::unique_ptr<PrefHashStore> pref_hash_store_; |
160 | 150 |
161 // A store and contents on which to perform extra validations without | 151 // A store and contents on which to perform extra validations without |
162 // triggering resets. | 152 // triggering resets. |
163 // Will be null if the platform does not support external validation. | 153 // Will be null if the platform does not support external validation. |
164 const base::Optional<StoreContentsPair> external_validation_hash_store_pair_; | 154 const base::Optional<StoreContentsPair> external_validation_hash_store_pair_; |
165 | 155 |
166 // Invoked if a reset occurs in a call to FilterOnLoad. | 156 // Invoked if a reset occurs in a call to FilterOnLoad. |
167 const base::Closure on_reset_on_load_; | 157 base::Closure on_reset_on_load_; |
168 | 158 |
169 TrackedPreferencesMap tracked_paths_; | 159 TrackedPreferencesMap tracked_paths_; |
170 | 160 |
171 // The set of all paths whose value has changed since the last call to | 161 // The set of all paths whose value has changed since the last call to |
172 // FilterSerializeData. | 162 // FilterSerializeData. |
173 ChangedPathsMap changed_paths_; | 163 ChangedPathsMap changed_paths_; |
174 | 164 |
175 // Whether to report the validity of the super MAC at load time (via UMA). | 165 // Whether to report the validity of the super MAC at load time (via UMA). |
176 bool report_super_mac_validity_; | 166 bool report_super_mac_validity_; |
177 | 167 |
178 DISALLOW_COPY_AND_ASSIGN(PrefHashFilter); | 168 DISALLOW_COPY_AND_ASSIGN(PrefHashFilter); |
179 }; | 169 }; |
180 | 170 |
181 #endif // COMPONENTS_PREFS_TRACKED_PREF_HASH_FILTER_H_ | 171 #endif // COMPONENTS_PREFS_TRACKED_PREF_HASH_FILTER_H_ |
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