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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
|
// Copyright (c) 2012 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 "chrome/installer/util/google_update_settings.h"
#include <algorithm>
#include <string>
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/metrics/histogram.h"
#include "base/path_service.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/thread_restrictions.h"
#include "base/time/time.h"
#include "base/win/registry.h"
#include "base/win/win_util.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/installer/util/browser_distribution.h"
#include "chrome/installer/util/channel_info.h"
#include "chrome/installer/util/google_update_constants.h"
#include "chrome/installer/util/google_update_experiment_util.h"
#include "chrome/installer/util/install_util.h"
#include "chrome/installer/util/installation_state.h"
#include "chrome/installer/util/product.h"
using base::win::RegKey;
using installer::InstallationState;
namespace {
const wchar_t kGoogleUpdatePoliciesKey[] =
L"SOFTWARE\\Policies\\Google\\Update";
const wchar_t kGoogleUpdateUpdatePolicyValue[] = L"UpdateDefault";
const wchar_t kGoogleUpdateUpdateOverrideValuePrefix[] = L"Update";
const GoogleUpdateSettings::UpdatePolicy kGoogleUpdateDefaultUpdatePolicy =
#if defined(GOOGLE_CHROME_BUILD)
GoogleUpdateSettings::AUTOMATIC_UPDATES;
#else
GoogleUpdateSettings::UPDATES_DISABLED;
#endif
bool ReadGoogleUpdateStrKey(const wchar_t* const name, std::wstring* value) {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
std::wstring reg_path = dist->GetStateKey();
RegKey key(HKEY_CURRENT_USER, reg_path.c_str(), KEY_READ);
if (key.ReadValue(name, value) != ERROR_SUCCESS) {
RegKey hklm_key(HKEY_LOCAL_MACHINE, reg_path.c_str(), KEY_READ);
return (hklm_key.ReadValue(name, value) == ERROR_SUCCESS);
}
return true;
}
// Update a state registry key |name| to be |value| for the given browser
// |dist|. If this is a |system_install|, then update the value under
// HKLM (istead of HKCU for user-installs) using a group of keys (one
// for each OS user) and also include the method to |aggregate| these
// values when reporting.
bool WriteGoogleUpdateStrKeyInternal(BrowserDistribution* dist,
bool system_install,
const wchar_t* const name,
// presubmit: allow wstring
const std::wstring& value,
const wchar_t* const aggregate) {
DCHECK(dist);
if (system_install) {
DCHECK(aggregate);
// Machine installs require each OS user to write a unique key under a
// named key in HKLM as well as an "aggregation" function that describes
// how the values of multiple users are to be combined.
std::wstring uniquename; // presubmit: allow wstring
if (!base::win::GetUserSidString(&uniquename)) {
NOTREACHED();
return false;
}
// presubmit: allow wstring
std::wstring reg_path(dist->GetStateMediumKey());
reg_path.append(L"\\");
reg_path.append(name);
RegKey key(HKEY_LOCAL_MACHINE, reg_path.c_str(), KEY_SET_VALUE);
key.WriteValue(google_update::kRegAggregateMethod, aggregate);
return (key.WriteValue(uniquename.c_str(), value.c_str()) == ERROR_SUCCESS);
} else {
// User installs are easy: just write the values to HKCU tree.
RegKey key(HKEY_CURRENT_USER, dist->GetStateKey().c_str(), KEY_SET_VALUE);
return (key.WriteValue(name, value.c_str()) == ERROR_SUCCESS);
}
}
bool WriteGoogleUpdateStrKey(const wchar_t* const name,
const std::wstring& value) {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
return WriteGoogleUpdateStrKeyInternal(dist, false, name, value, NULL);
}
bool WriteGoogleUpdateStrKeyMultiInstall(BrowserDistribution* dist,
const wchar_t* const name,
const std::wstring& value,
bool system_level) {
bool result = WriteGoogleUpdateStrKeyInternal(dist, false, name, value, NULL);
if (!InstallUtil::IsMultiInstall(dist, system_level))
return result;
// It is a multi-install distro. Must write the reg value again.
BrowserDistribution* multi_dist =
BrowserDistribution::GetSpecificDistribution(
BrowserDistribution::CHROME_BINARIES);
return
WriteGoogleUpdateStrKeyInternal(multi_dist, false, name, value, NULL) &&
result;
}
bool ClearGoogleUpdateStrKey(const wchar_t* const name) {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
std::wstring reg_path = dist->GetStateKey();
RegKey key(HKEY_CURRENT_USER, reg_path.c_str(), KEY_READ | KEY_WRITE);
std::wstring value;
if (key.ReadValue(name, &value) != ERROR_SUCCESS)
return false;
return (key.WriteValue(name, L"") == ERROR_SUCCESS);
}
bool RemoveGoogleUpdateStrKey(const wchar_t* const name) {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
std::wstring reg_path = dist->GetStateKey();
RegKey key(HKEY_CURRENT_USER, reg_path.c_str(), KEY_READ | KEY_WRITE);
if (!key.HasValue(name))
return true;
return (key.DeleteValue(name) == ERROR_SUCCESS);
}
bool GetChromeChannelInternal(bool system_install,
bool add_multi_modifier,
base::string16* channel) {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
if (dist->GetChromeChannel(channel)) {
return true;
}
HKEY root_key = system_install ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
base::string16 reg_path = dist->GetStateKey();
RegKey key(root_key, reg_path.c_str(), KEY_READ);
installer::ChannelInfo channel_info;
if (!channel_info.Initialize(key)) {
channel->assign(installer::kChromeChannelUnknown);
return false;
}
if (!channel_info.GetChannelName(channel)) {
channel->assign(installer::kChromeChannelUnknown);
}
// Tag the channel name if this is a multi-install.
if (add_multi_modifier && channel_info.IsMultiInstall()) {
if (!channel->empty()) {
channel->append(1, L'-');
}
channel->append(1, L'm');
}
return true;
}
// Populates |update_policy| with the UpdatePolicy enum value corresponding to a
// DWORD read from the registry and returns true if |value| is within range.
// If |value| is out of range, returns false without modifying |update_policy|.
bool GetUpdatePolicyFromDword(
const DWORD value,
GoogleUpdateSettings::UpdatePolicy* update_policy) {
switch (value) {
case GoogleUpdateSettings::UPDATES_DISABLED:
case GoogleUpdateSettings::AUTOMATIC_UPDATES:
case GoogleUpdateSettings::MANUAL_UPDATES_ONLY:
case GoogleUpdateSettings::AUTO_UPDATES_ONLY:
*update_policy = static_cast<GoogleUpdateSettings::UpdatePolicy>(value);
return true;
default:
LOG(WARNING) << "Unexpected update policy override value: " << value;
}
return false;
}
} // namespace
bool GoogleUpdateSettings::IsSystemInstall() {
bool system_install = false;
base::FilePath module_dir;
if (!PathService::Get(base::DIR_MODULE, &module_dir)) {
LOG(WARNING)
<< "Failed to get directory of module; assuming per-user install.";
} else {
system_install = !InstallUtil::IsPerUserInstall(module_dir.value().c_str());
}
return system_install;
}
bool GoogleUpdateSettings::GetCollectStatsConsent() {
return GetCollectStatsConsentAtLevel(IsSystemInstall());
}
// Older versions of Chrome unconditionally read from HKCU\...\ClientState\...
// and then HKLM\...\ClientState\.... This means that system-level Chrome
// never checked ClientStateMedium (which has priority according to Google
// Update) and gave preference to a value in HKCU (which was never checked by
// Google Update). From now on, Chrome follows Google Update's policy.
bool GoogleUpdateSettings::GetCollectStatsConsentAtLevel(bool system_install) {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
// Consent applies to all products in a multi-install package.
if (InstallUtil::IsMultiInstall(dist, system_install)) {
dist = BrowserDistribution::GetSpecificDistribution(
BrowserDistribution::CHROME_BINARIES);
}
RegKey key;
DWORD value = 0;
bool have_value = false;
// For system-level installs, try ClientStateMedium first.
have_value =
system_install &&
key.Open(HKEY_LOCAL_MACHINE, dist->GetStateMediumKey().c_str(),
KEY_QUERY_VALUE) == ERROR_SUCCESS &&
key.ReadValueDW(google_update::kRegUsageStatsField,
&value) == ERROR_SUCCESS;
// Otherwise, try ClientState.
if (!have_value) {
have_value =
key.Open(system_install ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER,
dist->GetStateKey().c_str(),
KEY_QUERY_VALUE) == ERROR_SUCCESS &&
key.ReadValueDW(google_update::kRegUsageStatsField,
&value) == ERROR_SUCCESS;
}
// Google Update specifically checks that the value is 1, so we do the same.
return have_value && value == 1;
}
bool GoogleUpdateSettings::SetCollectStatsConsent(bool consented) {
return SetCollectStatsConsentAtLevel(IsSystemInstall(), consented);
}
bool GoogleUpdateSettings::SetCollectStatsConsentAtLevel(bool system_install,
bool consented) {
// Google Update writes and expects 1 for true, 0 for false.
DWORD value = consented ? 1 : 0;
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
// Consent applies to all products in a multi-install package.
if (InstallUtil::IsMultiInstall(dist, system_install)) {
dist = BrowserDistribution::GetSpecificDistribution(
BrowserDistribution::CHROME_BINARIES);
}
// Write to ClientStateMedium for system-level; ClientState otherwise.
HKEY root_key = system_install ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
std::wstring reg_path =
system_install ? dist->GetStateMediumKey() : dist->GetStateKey();
RegKey key;
LONG result = key.Create(root_key, reg_path.c_str(), KEY_SET_VALUE);
if (result != ERROR_SUCCESS) {
LOG(ERROR) << "Failed opening key " << reg_path << " to set "
<< google_update::kRegUsageStatsField << "; result: " << result;
} else {
result = key.WriteValue(google_update::kRegUsageStatsField, value);
LOG_IF(ERROR, result != ERROR_SUCCESS) << "Failed setting "
<< google_update::kRegUsageStatsField << " in key " << reg_path
<< "; result: " << result;
}
return (result == ERROR_SUCCESS);
}
bool GoogleUpdateSettings::GetMetricsId(std::string* metrics_id) {
std::wstring metrics_id_w;
bool rv = ReadGoogleUpdateStrKey(google_update::kRegMetricsId, &metrics_id_w);
*metrics_id = base::WideToUTF8(metrics_id_w);
return rv;
}
bool GoogleUpdateSettings::SetMetricsId(const std::string& metrics_id) {
std::wstring metrics_id_w = base::UTF8ToWide(metrics_id);
return WriteGoogleUpdateStrKey(google_update::kRegMetricsId, metrics_id_w);
}
// EULA consent is only relevant for system-level installs.
bool GoogleUpdateSettings::SetEULAConsent(
const InstallationState& machine_state,
BrowserDistribution* dist,
bool consented) {
DCHECK(dist);
const DWORD eula_accepted = consented ? 1 : 0;
std::wstring reg_path = dist->GetStateMediumKey();
bool succeeded = true;
RegKey key;
// Write the consent value into the product's ClientStateMedium key.
if (key.Create(HKEY_LOCAL_MACHINE, reg_path.c_str(),
KEY_SET_VALUE) != ERROR_SUCCESS ||
key.WriteValue(google_update::kRegEULAAceptedField,
eula_accepted) != ERROR_SUCCESS) {
succeeded = false;
}
// If this is a multi-install, also write it into the binaries' key.
// --mutli-install is not provided on the command-line, so deduce it from
// the product's state.
const installer::ProductState* product_state =
machine_state.GetProductState(true, dist->GetType());
if (product_state != NULL && product_state->is_multi_install()) {
dist = BrowserDistribution::GetSpecificDistribution(
BrowserDistribution::CHROME_BINARIES);
reg_path = dist->GetStateMediumKey();
if (key.Create(HKEY_LOCAL_MACHINE, reg_path.c_str(),
KEY_SET_VALUE) != ERROR_SUCCESS ||
key.WriteValue(google_update::kRegEULAAceptedField,
eula_accepted) != ERROR_SUCCESS) {
succeeded = false;
}
}
return succeeded;
}
int GoogleUpdateSettings::GetLastRunTime() {
std::wstring time_s;
if (!ReadGoogleUpdateStrKey(google_update::kRegLastRunTimeField, &time_s))
return -1;
int64 time_i;
if (!base::StringToInt64(time_s, &time_i))
return -1;
base::TimeDelta td =
base::Time::NowFromSystemTime() - base::Time::FromInternalValue(time_i);
return td.InDays();
}
bool GoogleUpdateSettings::SetLastRunTime() {
int64 time = base::Time::NowFromSystemTime().ToInternalValue();
return WriteGoogleUpdateStrKey(google_update::kRegLastRunTimeField,
base::Int64ToString16(time));
}
bool GoogleUpdateSettings::RemoveLastRunTime() {
return RemoveGoogleUpdateStrKey(google_update::kRegLastRunTimeField);
}
bool GoogleUpdateSettings::GetBrowser(std::wstring* browser) {
return ReadGoogleUpdateStrKey(google_update::kRegBrowserField, browser);
}
bool GoogleUpdateSettings::GetLanguage(std::wstring* language) {
return ReadGoogleUpdateStrKey(google_update::kRegLangField, language);
}
bool GoogleUpdateSettings::GetBrand(std::wstring* brand) {
return ReadGoogleUpdateStrKey(google_update::kRegRLZBrandField, brand);
}
bool GoogleUpdateSettings::GetReactivationBrand(std::wstring* brand) {
return ReadGoogleUpdateStrKey(google_update::kRegRLZReactivationBrandField,
brand);
}
bool GoogleUpdateSettings::GetClient(std::wstring* client) {
return ReadGoogleUpdateStrKey(google_update::kRegClientField, client);
}
bool GoogleUpdateSettings::SetClient(const std::wstring& client) {
return WriteGoogleUpdateStrKey(google_update::kRegClientField, client);
}
bool GoogleUpdateSettings::GetReferral(std::wstring* referral) {
return ReadGoogleUpdateStrKey(google_update::kRegReferralField, referral);
}
bool GoogleUpdateSettings::ClearReferral() {
return ClearGoogleUpdateStrKey(google_update::kRegReferralField);
}
bool GoogleUpdateSettings::UpdateDidRunState(bool did_run,
bool system_level) {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
return UpdateDidRunStateForDistribution(dist, did_run, system_level);
}
bool GoogleUpdateSettings::UpdateDidRunStateForDistribution(
BrowserDistribution* dist,
bool did_run,
bool system_level) {
return WriteGoogleUpdateStrKeyMultiInstall(dist,
google_update::kRegDidRunField,
did_run ? L"1" : L"0",
system_level);
}
std::wstring GoogleUpdateSettings::GetChromeChannel(bool system_install) {
std::wstring channel;
GetChromeChannelInternal(system_install, false, &channel);
return channel;
}
bool GoogleUpdateSettings::GetChromeChannelAndModifiers(
bool system_install,
base::string16* channel) {
return GetChromeChannelInternal(system_install, true, channel);
}
void GoogleUpdateSettings::UpdateInstallStatus(bool system_install,
installer::ArchiveType archive_type, int install_return_code,
const std::wstring& product_guid) {
DCHECK(archive_type != installer::UNKNOWN_ARCHIVE_TYPE ||
install_return_code != 0);
HKEY reg_root = (system_install) ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
RegKey key;
installer::ChannelInfo channel_info;
std::wstring reg_key(google_update::kRegPathClientState);
reg_key.append(L"\\");
reg_key.append(product_guid);
LONG result = key.Open(reg_root, reg_key.c_str(),
KEY_QUERY_VALUE | KEY_SET_VALUE);
if (result == ERROR_SUCCESS)
channel_info.Initialize(key);
else if (result != ERROR_FILE_NOT_FOUND)
LOG(ERROR) << "Failed to open " << reg_key << "; Error: " << result;
if (UpdateGoogleUpdateApKey(archive_type, install_return_code,
&channel_info)) {
// We have a modified channel_info value to write.
// Create the app's ClientState key if it doesn't already exist.
if (!key.Valid()) {
result = key.Open(reg_root, google_update::kRegPathClientState,
KEY_CREATE_SUB_KEY);
if (result == ERROR_SUCCESS)
result = key.CreateKey(product_guid.c_str(), KEY_SET_VALUE);
if (result != ERROR_SUCCESS) {
LOG(ERROR) << "Failed to create " << reg_key << "; Error: " << result;
return;
}
}
if (!channel_info.Write(&key)) {
LOG(ERROR) << "Failed to write to application's ClientState key "
<< google_update::kRegApField << " = " << channel_info.value();
}
}
}
bool GoogleUpdateSettings::UpdateGoogleUpdateApKey(
installer::ArchiveType archive_type, int install_return_code,
installer::ChannelInfo* value) {
DCHECK(archive_type != installer::UNKNOWN_ARCHIVE_TYPE ||
install_return_code != 0);
bool modified = false;
if (archive_type == installer::FULL_ARCHIVE_TYPE || !install_return_code) {
if (value->SetFullSuffix(false)) {
VLOG(1) << "Removed incremental installer failure key; "
"switching to channel: "
<< value->value();
modified = true;
}
} else if (archive_type == installer::INCREMENTAL_ARCHIVE_TYPE) {
if (value->SetFullSuffix(true)) {
VLOG(1) << "Incremental installer failed; switching to channel: "
<< value->value();
modified = true;
} else {
VLOG(1) << "Incremental installer failure; already on channel: "
<< value->value();
}
} else {
// It's okay if we don't know the archive type. In this case, leave the
// "-full" suffix as we found it.
DCHECK_EQ(installer::UNKNOWN_ARCHIVE_TYPE, archive_type);
}
if (value->SetMultiFailSuffix(false)) {
VLOG(1) << "Removed multi-install failure key; switching to channel: "
<< value->value();
modified = true;
}
return modified;
}
void GoogleUpdateSettings::UpdateProfileCounts(int profiles_active,
int profiles_signedin) {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
bool system_install = IsSystemInstall();
WriteGoogleUpdateStrKeyInternal(dist, system_install,
google_update::kRegProfilesActive,
base::Int64ToString16(profiles_active),
L"sum()");
WriteGoogleUpdateStrKeyInternal(dist, system_install,
google_update::kRegProfilesSignedIn,
base::Int64ToString16(profiles_signedin),
L"sum()");
}
int GoogleUpdateSettings::DuplicateGoogleUpdateSystemClientKey() {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
std::wstring reg_path = dist->GetStateKey();
// Minimum access needed is to be able to write to this key.
RegKey reg_key(HKEY_LOCAL_MACHINE, reg_path.c_str(), KEY_SET_VALUE);
if (!reg_key.Valid())
return 0;
HANDLE target_handle = 0;
if (!DuplicateHandle(GetCurrentProcess(), reg_key.Handle(),
GetCurrentProcess(), &target_handle, KEY_SET_VALUE,
TRUE, DUPLICATE_SAME_ACCESS)) {
return 0;
}
return reinterpret_cast<int>(target_handle);
}
bool GoogleUpdateSettings::WriteGoogleUpdateSystemClientKey(
int handle, const std::wstring& key, const std::wstring& value) {
HKEY reg_key = reinterpret_cast<HKEY>(reinterpret_cast<void*>(handle));
DWORD size = static_cast<DWORD>(value.size()) * sizeof(wchar_t);
LSTATUS status = RegSetValueEx(reg_key, key.c_str(), 0, REG_SZ,
reinterpret_cast<const BYTE*>(value.c_str()), size);
return status == ERROR_SUCCESS;
}
GoogleUpdateSettings::UpdatePolicy GoogleUpdateSettings::GetAppUpdatePolicy(
const std::wstring& app_guid,
bool* is_overridden) {
bool found_override = false;
UpdatePolicy update_policy = kGoogleUpdateDefaultUpdatePolicy;
#if defined(GOOGLE_CHROME_BUILD)
DCHECK(!app_guid.empty());
RegKey policy_key;
// Google Update Group Policy settings are always in HKLM.
if (policy_key.Open(HKEY_LOCAL_MACHINE, kGoogleUpdatePoliciesKey,
KEY_QUERY_VALUE) == ERROR_SUCCESS) {
static const size_t kPrefixLen =
arraysize(kGoogleUpdateUpdateOverrideValuePrefix) - 1;
DWORD value;
std::wstring app_update_override;
app_update_override.reserve(kPrefixLen + app_guid.size());
app_update_override.append(kGoogleUpdateUpdateOverrideValuePrefix,
kPrefixLen);
app_update_override.append(app_guid);
// First try to read and comprehend the app-specific override.
found_override = (policy_key.ReadValueDW(app_update_override.c_str(),
&value) == ERROR_SUCCESS &&
GetUpdatePolicyFromDword(value, &update_policy));
// Failing that, try to read and comprehend the default override.
if (!found_override &&
policy_key.ReadValueDW(kGoogleUpdateUpdatePolicyValue,
&value) == ERROR_SUCCESS) {
GetUpdatePolicyFromDword(value, &update_policy);
}
}
#endif // defined(GOOGLE_CHROME_BUILD)
if (is_overridden != NULL)
*is_overridden = found_override;
return update_policy;
}
void GoogleUpdateSettings::RecordChromeUpdatePolicyHistograms() {
const bool is_multi_install = InstallUtil::IsMultiInstall(
BrowserDistribution::GetDistribution(), IsSystemInstall());
const base::string16 app_guid =
BrowserDistribution::GetSpecificDistribution(
is_multi_install ? BrowserDistribution::CHROME_BINARIES :
BrowserDistribution::CHROME_BROWSER)->GetAppGuid();
bool is_overridden = false;
const UpdatePolicy update_policy = GetAppUpdatePolicy(app_guid,
&is_overridden);
UMA_HISTOGRAM_BOOLEAN("GoogleUpdate.UpdatePolicyIsOverridden", is_overridden);
UMA_HISTOGRAM_ENUMERATION("GoogleUpdate.EffectivePolicy", update_policy,
UPDATE_POLICIES_COUNT);
}
base::string16 GoogleUpdateSettings::GetUninstallCommandLine(
bool system_install) {
const HKEY root_key = system_install ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
base::string16 cmd_line;
RegKey update_key;
if (update_key.Open(root_key, google_update::kRegPathGoogleUpdate,
KEY_QUERY_VALUE) == ERROR_SUCCESS) {
update_key.ReadValue(google_update::kRegUninstallCmdLine, &cmd_line);
}
return cmd_line;
}
Version GoogleUpdateSettings::GetGoogleUpdateVersion(bool system_install) {
const HKEY root_key = system_install ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
base::string16 version;
RegKey key;
if (key.Open(root_key,
google_update::kRegPathGoogleUpdate,
KEY_QUERY_VALUE) == ERROR_SUCCESS &&
key.ReadValue(google_update::kRegGoogleUpdateVersion,
&version) == ERROR_SUCCESS) {
return Version(base::UTF16ToUTF8(version));
}
return Version();
}
base::Time GoogleUpdateSettings::GetGoogleUpdateLastStartedAU(
bool system_install) {
const HKEY root_key = system_install ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
RegKey update_key;
if (update_key.Open(root_key, google_update::kRegPathGoogleUpdate,
KEY_QUERY_VALUE) == ERROR_SUCCESS) {
DWORD last_start;
if (update_key.ReadValueDW(google_update::kRegLastStartedAUField,
&last_start) == ERROR_SUCCESS) {
return base::Time::FromTimeT(last_start);
}
}
return base::Time();
}
base::Time GoogleUpdateSettings::GetGoogleUpdateLastChecked(
bool system_install) {
const HKEY root_key = system_install ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
RegKey update_key;
if (update_key.Open(root_key, google_update::kRegPathGoogleUpdate,
KEY_QUERY_VALUE) == ERROR_SUCCESS) {
DWORD last_check;
if (update_key.ReadValueDW(google_update::kRegLastCheckedField,
&last_check) == ERROR_SUCCESS) {
return base::Time::FromTimeT(last_check);
}
}
return base::Time();
}
bool GoogleUpdateSettings::GetUpdateDetailForApp(bool system_install,
const wchar_t* app_guid,
ProductData* data) {
DCHECK(app_guid);
DCHECK(data);
bool product_found = false;
const HKEY root_key = system_install ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
base::string16 clientstate_reg_path(google_update::kRegPathClientState);
clientstate_reg_path.append(L"\\");
clientstate_reg_path.append(app_guid);
RegKey clientstate;
if (clientstate.Open(root_key, clientstate_reg_path.c_str(),
KEY_QUERY_VALUE) == ERROR_SUCCESS) {
base::string16 version;
DWORD dword_value;
if ((clientstate.ReadValueDW(google_update::kRegLastCheckSuccessField,
&dword_value) == ERROR_SUCCESS) &&
(clientstate.ReadValue(google_update::kRegVersionField,
&version) == ERROR_SUCCESS)) {
product_found = true;
data->version = base::UTF16ToASCII(version);
data->last_success = base::Time::FromTimeT(dword_value);
data->last_result = 0;
data->last_error_code = 0;
data->last_extra_code = 0;
if (clientstate.ReadValueDW(google_update::kRegLastInstallerResultField,
&dword_value) == ERROR_SUCCESS) {
// Google Update convention is that if an installer writes an result
// code that is invalid, it is clamped to an exit code result.
const DWORD kMaxValidInstallResult = 4; // INSTALLER_RESULT_EXIT_CODE
data->last_result = std::min(dword_value, kMaxValidInstallResult);
}
if (clientstate.ReadValueDW(google_update::kRegLastInstallerErrorField,
&dword_value) == ERROR_SUCCESS) {
data->last_error_code = dword_value;
}
if (clientstate.ReadValueDW(google_update::kRegLastInstallerExtraField,
&dword_value) == ERROR_SUCCESS) {
data->last_extra_code = dword_value;
}
}
}
return product_found;
}
bool GoogleUpdateSettings::GetUpdateDetailForGoogleUpdate(bool system_install,
ProductData* data) {
return GetUpdateDetailForApp(system_install,
google_update::kGoogleUpdateUpgradeCode,
data);
}
bool GoogleUpdateSettings::GetUpdateDetail(bool system_install,
ProductData* data) {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
return GetUpdateDetailForApp(system_install,
dist->GetAppGuid().c_str(),
data);
}
bool GoogleUpdateSettings::SetExperimentLabels(
bool system_install,
const base::string16& experiment_labels) {
HKEY reg_root = system_install ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
// Use the browser distribution and install level to write to the correct
// client state/app guid key.
bool success = false;
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
if (dist->ShouldSetExperimentLabels()) {
base::string16 client_state_path(
system_install ? dist->GetStateMediumKey() : dist->GetStateKey());
RegKey client_state(
reg_root, client_state_path.c_str(), KEY_SET_VALUE);
if (experiment_labels.empty()) {
success = client_state.DeleteValue(google_update::kExperimentLabels)
== ERROR_SUCCESS;
} else {
success = client_state.WriteValue(google_update::kExperimentLabels,
experiment_labels.c_str()) == ERROR_SUCCESS;
}
}
return success;
}
bool GoogleUpdateSettings::ReadExperimentLabels(
bool system_install,
base::string16* experiment_labels) {
HKEY reg_root = system_install ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
// If this distribution does not set the experiment labels, don't bother
// reading.
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
if (!dist->ShouldSetExperimentLabels())
return false;
base::string16 client_state_path(
system_install ? dist->GetStateMediumKey() : dist->GetStateKey());
RegKey client_state;
LONG result =
client_state.Open(reg_root, client_state_path.c_str(), KEY_QUERY_VALUE);
if (result == ERROR_SUCCESS) {
result = client_state.ReadValue(google_update::kExperimentLabels,
experiment_labels);
}
// If the key or value was not present, return the empty string.
if (result == ERROR_FILE_NOT_FOUND || result == ERROR_PATH_NOT_FOUND) {
experiment_labels->clear();
return true;
}
return result == ERROR_SUCCESS;
}
|