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| 1 // Copyright 2017 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 #include "services/preferences/tracked/tracked_persistent_pref_store_factory.h" |
| 6 |
| 7 #include <memory> |
| 8 #include <set> |
| 9 #include <string> |
| 10 #include <utility> |
| 11 #include <vector> |
| 12 |
| 13 #include "components/prefs/json_pref_store.h" |
| 14 #include "components/prefs/pref_filter.h" |
| 15 #include "services/preferences/public/interfaces/tracked_preference_validation_d
elegate.mojom.h" |
| 16 #include "services/preferences/tracked/pref_hash_filter.h" |
| 17 #include "services/preferences/tracked/pref_hash_store_impl.h" |
| 18 #include "services/preferences/tracked/segregated_pref_store.h" |
| 19 #include "services/preferences/tracked/tracked_preferences_migration.h" |
| 20 |
| 21 #if defined(OS_WIN) |
| 22 #include "services/preferences/tracked/registry_hash_store_contents_win.h" |
| 23 #endif |
| 24 |
| 25 namespace { |
| 26 |
| 27 void RemoveValueSilently(const base::WeakPtr<JsonPrefStore> pref_store, |
| 28 const std::string& key) { |
| 29 if (pref_store) { |
| 30 pref_store->RemoveValueSilently( |
| 31 key, WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS); |
| 32 } |
| 33 } |
| 34 |
| 35 std::unique_ptr<PrefHashStore> CreatePrefHashStore( |
| 36 const prefs::mojom::TrackedPersistentPrefStoreConfiguration& config, |
| 37 bool use_super_mac) { |
| 38 return base::MakeUnique<PrefHashStoreImpl>( |
| 39 config.seed, config.legacy_device_id, use_super_mac); |
| 40 } |
| 41 |
| 42 std::pair<std::unique_ptr<PrefHashStore>, std::unique_ptr<HashStoreContents>> |
| 43 GetExternalVerificationPrefHashStorePair( |
| 44 const prefs::mojom::TrackedPersistentPrefStoreConfiguration& config) { |
| 45 #if defined(OS_WIN) |
| 46 return std::make_pair( |
| 47 base::MakeUnique<PrefHashStoreImpl>(config.registry_seed, |
| 48 config.legacy_device_id, |
| 49 false /* use_super_mac */), |
| 50 base::MakeUnique<RegistryHashStoreContentsWin>( |
| 51 config.registry_path, config.unprotected_pref_filename.DirName() |
| 52 .BaseName() |
| 53 .LossyDisplayName())); |
| 54 #else |
| 55 return std::make_pair(nullptr, nullptr); |
| 56 #endif |
| 57 } |
| 58 |
| 59 } // namespace |
| 60 |
| 61 PersistentPrefStore* CreateTrackedPersistentPrefStore( |
| 62 prefs::mojom::TrackedPersistentPrefStoreConfigurationPtr config, |
| 63 base::SequencedWorkerPool* worker_pool) { |
| 64 auto io_task_runner = JsonPrefStore::GetTaskRunnerForFile( |
| 65 config->unprotected_pref_filename.DirName(), worker_pool); |
| 66 |
| 67 std::vector<prefs::mojom::TrackedPreferenceMetadataPtr> |
| 68 unprotected_configuration; |
| 69 std::vector<prefs::mojom::TrackedPreferenceMetadataPtr> |
| 70 protected_configuration; |
| 71 std::set<std::string> protected_pref_names; |
| 72 std::set<std::string> unprotected_pref_names; |
| 73 for (auto& metadata : config->tracking_configuration) { |
| 74 if (metadata->enforcement_level > prefs::mojom::TrackedPreferenceMetadata:: |
| 75 EnforcementLevel::NO_ENFORCEMENT) { |
| 76 protected_pref_names.insert(metadata->name); |
| 77 protected_configuration.push_back(std::move(metadata)); |
| 78 } else { |
| 79 unprotected_pref_names.insert(metadata->name); |
| 80 unprotected_configuration.push_back(std::move(metadata)); |
| 81 } |
| 82 } |
| 83 config->tracking_configuration.clear(); |
| 84 |
| 85 std::unique_ptr<PrefHashFilter> unprotected_pref_hash_filter( |
| 86 new PrefHashFilter(CreatePrefHashStore(*config, false), |
| 87 GetExternalVerificationPrefHashStorePair(*config), |
| 88 unprotected_configuration, nullptr, |
| 89 config->validation_delegate.get(), |
| 90 config->reporting_ids_count, false)); |
| 91 std::unique_ptr<PrefHashFilter> protected_pref_hash_filter(new PrefHashFilter( |
| 92 CreatePrefHashStore(*config, true), |
| 93 GetExternalVerificationPrefHashStorePair(*config), |
| 94 protected_configuration, std::move(config->reset_on_load_observer), |
| 95 config->validation_delegate.get(), config->reporting_ids_count, true)); |
| 96 |
| 97 PrefHashFilter* raw_unprotected_pref_hash_filter = |
| 98 unprotected_pref_hash_filter.get(); |
| 99 PrefHashFilter* raw_protected_pref_hash_filter = |
| 100 protected_pref_hash_filter.get(); |
| 101 |
| 102 scoped_refptr<JsonPrefStore> unprotected_pref_store( |
| 103 new JsonPrefStore(config->unprotected_pref_filename, io_task_runner.get(), |
| 104 std::move(unprotected_pref_hash_filter))); |
| 105 scoped_refptr<JsonPrefStore> protected_pref_store( |
| 106 new JsonPrefStore(config->protected_pref_filename, io_task_runner.get(), |
| 107 std::move(protected_pref_hash_filter))); |
| 108 |
| 109 SetupTrackedPreferencesMigration( |
| 110 unprotected_pref_names, protected_pref_names, |
| 111 base::Bind(&RemoveValueSilently, unprotected_pref_store->AsWeakPtr()), |
| 112 base::Bind(&RemoveValueSilently, protected_pref_store->AsWeakPtr()), |
| 113 base::Bind(&JsonPrefStore::RegisterOnNextSuccessfulWriteReply, |
| 114 unprotected_pref_store->AsWeakPtr()), |
| 115 base::Bind(&JsonPrefStore::RegisterOnNextSuccessfulWriteReply, |
| 116 protected_pref_store->AsWeakPtr()), |
| 117 CreatePrefHashStore(*config, false), CreatePrefHashStore(*config, true), |
| 118 raw_unprotected_pref_hash_filter, raw_protected_pref_hash_filter); |
| 119 |
| 120 return new SegregatedPrefStore(unprotected_pref_store, protected_pref_store, |
| 121 protected_pref_names, |
| 122 std::move(config->validation_delegate)); |
| 123 } |
| 124 |
| 125 void InitializeMasterPrefsTracking( |
| 126 prefs::mojom::TrackedPersistentPrefStoreConfigurationPtr configuration, |
| 127 base::DictionaryValue* master_prefs) { |
| 128 PrefHashFilter(CreatePrefHashStore(*configuration, false), |
| 129 GetExternalVerificationPrefHashStorePair(*configuration), |
| 130 configuration->tracking_configuration, nullptr, nullptr, |
| 131 configuration->reporting_ids_count, false) |
| 132 .Initialize(master_prefs); |
| 133 } |
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