1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/user_prefs/tracked/tracked_atomic_preference.h"
#include "base/values.h"
#include "components/user_prefs/tracked/pref_hash_store_transaction.h"
#include "components/user_prefs/tracked/tracked_preference_validation_delegate.h"
TrackedAtomicPreference::TrackedAtomicPreference(
const std::string& pref_path,
size_t reporting_id,
size_t reporting_ids_count,
PrefHashFilter::EnforcementLevel enforcement_level,
PrefHashFilter::ValueType value_type,
TrackedPreferenceValidationDelegate* delegate)
: pref_path_(pref_path),
helper_(pref_path,
reporting_id,
reporting_ids_count,
enforcement_level,
value_type),
delegate_(delegate) {
}
TrackedPreferenceType TrackedAtomicPreference::GetType() const {
return TrackedPreferenceType::ATOMIC;
}
void TrackedAtomicPreference::OnNewValue(
const base::Value* value,
PrefHashStoreTransaction* transaction) const {
transaction->StoreHash(pref_path_, value);
}
bool TrackedAtomicPreference::EnforceAndReport(
base::DictionaryValue* pref_store_contents,
PrefHashStoreTransaction* transaction,
PrefHashStoreTransaction* external_validation_transaction) const {
const base::Value* value = NULL;
pref_store_contents->Get(pref_path_, &value);
PrefHashStoreTransaction::ValueState value_state =
transaction->CheckValue(pref_path_, value);
helper_.ReportValidationResult(value_state, transaction->GetStoreUMASuffix());
PrefHashStoreTransaction::ValueState external_validation_value_state =
PrefHashStoreTransaction::UNSUPPORTED;
if (external_validation_transaction) {
external_validation_value_state =
external_validation_transaction->CheckValue(pref_path_, value);
helper_.ReportValidationResult(
external_validation_value_state,
external_validation_transaction->GetStoreUMASuffix());
}
if (delegate_) {
delegate_->OnAtomicPreferenceValidation(pref_path_, value, value_state,
external_validation_value_state,
helper_.IsPersonal());
}
TrackedPreferenceHelper::ResetAction reset_action =
helper_.GetAction(value_state);
helper_.ReportAction(reset_action);
bool was_reset = false;
if (reset_action == TrackedPreferenceHelper::DO_RESET) {
pref_store_contents->RemovePath(pref_path_, NULL);
was_reset = true;
}
if (value_state != PrefHashStoreTransaction::UNCHANGED) {
// Store the hash for the new value (whether it was reset or not).
const base::Value* new_value = NULL;
pref_store_contents->Get(pref_path_, &new_value);
transaction->StoreHash(pref_path_, new_value);
}
// Update MACs in the external store if there is one and there either was a
// reset or external validation failed.
if (external_validation_transaction &&
(was_reset ||
external_validation_value_state !=
PrefHashStoreTransaction::UNCHANGED)) {
const base::Value* new_value = nullptr;
pref_store_contents->Get(pref_path_, &new_value);
external_validation_transaction->StoreHash(pref_path_, new_value);
}
return was_reset;
}
|
