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1 // Copyright 2015 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 "chrome/browser/profile_resetter/triggered_profile_resetter.h" | |
6 | |
7 #include "base/metrics/field_trial.h" | |
8 #include "base/metrics/histogram_macros.h" | |
9 #include "base/prefs/pref_service.h" | |
10 #include "base/win/registry.h" | |
11 #include "chrome/browser/profiles/profile.h" | |
12 #include "chrome/common/chrome_constants.h" | |
13 #include "chrome/common/pref_names.h" | |
14 | |
15 // The registry path where the TriggeredReset values get set. Note that this | |
16 // uses the same path for both SxS (Canary) and non-SxS Chrome. | |
17 const wchar_t kTriggeredResetRegistryPath[] = | |
18 L"Software\\" PRODUCT_STRING_PATH L"\\TriggeredReset"; | |
19 | |
20 const wchar_t kTriggeredResetToolName[] = L"ToolName"; | |
21 const wchar_t kTriggeredResetTimestamp[] = L"Timestamp"; | |
22 | |
23 namespace { | |
24 | |
25 const char kTriggeredResetFieldTrialName[] = "TriggeredResetFieldTrial"; | |
26 const char kTriggeredResetOnGroup[] = "On"; | |
27 | |
28 bool IsInTriggeredResetFieldTrial() { | |
29 return base::FieldTrialList::FindFullName(kTriggeredResetFieldTrialName) == | |
30 kTriggeredResetOnGroup; | |
31 } | |
32 | |
33 } // namespace | |
34 | |
35 void TriggeredProfileResetter::Activate() { | |
36 activate_called_ = true; | |
37 | |
38 // System profiles don't contain user settings and bail out if we're not in | |
39 // the field trial. | |
40 if (!profile_ || profile_->IsSystemProfile() || | |
41 !IsInTriggeredResetFieldTrial()) { | |
42 UMA_HISTOGRAM_BOOLEAN("Profile.TriggeredReset", false); | |
43 return; | |
44 } | |
45 | |
46 int64 timestamp = 0; | |
engedy
2015/09/21 12:56:10
Type int64 is deprecated, please use int64_t, and
robertshield
2015/09/21 22:04:30
Done.
| |
47 base::win::RegKey reset_reg_key(HKEY_CURRENT_USER, | |
48 kTriggeredResetRegistryPath, KEY_QUERY_VALUE); | |
49 | |
50 if (!reset_reg_key.Valid() || | |
51 reset_reg_key.ReadInt64(kTriggeredResetTimestamp, ×tamp) != | |
52 ERROR_SUCCESS) { | |
53 UMA_HISTOGRAM_BOOLEAN("Profile.TriggeredReset", false); | |
54 return; | |
55 } | |
56 | |
57 // A reset trigger time was found. Compare it to the trigger time stored | |
58 // in this profile. If different, reset the profile and persist the new | |
59 // time. | |
60 PrefService* pref_service = profile_->GetPrefs(); | |
61 const int64 preference_timestamp = | |
62 pref_service->GetInt64(prefs::kLastProfileResetTimestamp); | |
63 | |
64 if (profile_->IsNewProfile()) { | |
65 // New profiles should never be reset. Instead, persist the time stamp | |
66 // directly. | |
67 pref_service->SetInt64(prefs::kLastProfileResetTimestamp, timestamp); | |
68 } else if (timestamp != preference_timestamp) { | |
69 DVLOG(1) << "Profile reset detected."; | |
70 | |
71 has_reset_trigger_ = true; | |
72 | |
73 if (reset_reg_key.ReadValue(kTriggeredResetToolName, &tool_name_) != | |
74 ERROR_SUCCESS) { | |
75 DVLOG(1) << "Failed to read triggered profile reset tool name."; | |
76 } else if (tool_name_.length() > kMaxToolNameLength) { | |
77 tool_name_.resize(kMaxToolNameLength); | |
78 } | |
79 | |
80 pref_service->SetInt64(prefs::kLastProfileResetTimestamp, timestamp); | |
81 } | |
82 | |
83 UMA_HISTOGRAM_BOOLEAN("Profile.TriggeredReset", has_reset_trigger_); | |
84 } | |
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