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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/password_manager/android/password_manager_android_util.h"
#include <string>
#include "base/android/build_info.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/metrics/histogram_functions.h"
#include "base/notreached.h"
#include "base/strings/strcat.h"
#include "base/strings/string_number_conversions.h"
#include "chrome/browser/password_manager/android/password_manager_util_bridge.h"
#include "chrome/browser/password_manager/android/password_manager_util_bridge_interface.h"
#include "components/password_manager/core/browser/export/login_db_deprecation_password_exporter.h"
#include "components/password_manager/core/browser/password_manager_buildflags.h"
#include "components/password_manager/core/browser/password_manager_constants.h"
#include "components/password_manager/core/browser/password_manager_util.h"
#include "components/password_manager/core/browser/password_sync_util.h"
#include "components/password_manager/core/browser/split_stores_and_local_upm.h"
#include "components/password_manager/core/common/password_manager_pref_names.h"
#include "components/prefs/pref_service.h"
#include "components/sync/base/pref_names.h"
#include "components/version_info/android/channel_getter.h"
namespace password_manager_android_util {
namespace {
bool HasMinGmsVersionForFullUpmSupport() {
std::string gms_version_str =
base::android::BuildInfo::GetInstance()->gms_version_code();
int gms_version = 0;
// gms_version_code() must be converted to int for comparison, because it can
// have legacy values "3(...)" and those evaluate > "2023(...)".
return base::StringToInt(gms_version_str, &gms_version) &&
gms_version >= password_manager::GetLocalUpmMinGmsVersion();
}
#if !BUILDFLAG(USE_LOGIN_DATABASE_AS_BACKEND)
// Called on startup to delete the login data files for users migrated to UPM
// or for users who had all the unmigrated passwords auto-exported.
// Must only be called if the value of the state pref
// `PasswordsUseUPMLocalAndSeparateStores` is `On` and there
// is no need for deactivation of local UPM or either UPM is already active or
// unmigrated passwords have already been auto-exported.
void MaybeDeleteLoginDataFiles(PrefService* prefs,
const base::FilePath& login_db_directory) {
bool already_active_in_upm =
password_manager::GetLegacySplitStoresPref(prefs);
bool login_db_ready_for_deprecation =
LoginDbDeprecationReady(prefs);
CHECK(already_active_in_upm || login_db_ready_for_deprecation);
base::FilePath profile_db_path =
login_db_directory.Append(password_manager::kLoginDataForProfileFileName);
base::FilePath account_db_path =
login_db_directory.Append(password_manager::kLoginDataForAccountFileName);
base::FilePath profile_db_journal_path = login_db_directory.Append(
password_manager::kLoginDataJournalForProfileFileName);
base::FilePath account_db_journal_path = login_db_directory.Append(
password_manager::kLoginDataJournalForAccountFileName);
// Delete the login data files for the user migrated to UPM.
// In the unlikely case that the deletion operation fails, it will be
// retried upon next startup as part of
// `MaybeDeactivateSplitStoresAndLocalUpm`.
if (PathExists(profile_db_path)) {
bool success = base::DeleteFile(profile_db_path);
base::UmaHistogramBoolean("PasswordManager.ProfileLoginData.RemovalStatus",
success);
if (success) {
prefs->SetBoolean(
password_manager::prefs::kEmptyProfileStoreLoginDatabase, true);
}
}
base::DeleteFile(profile_db_journal_path);
if (PathExists(account_db_path)) {
bool success = base::DeleteFile(account_db_path);
base::UmaHistogramBoolean("PasswordManager.AccountLoginData.RemovalStatus",
success);
}
base::DeleteFile(account_db_journal_path);
}
void DeleteAutoExportedCsv(PrefService* prefs,
const base::FilePath& login_db_directory) {
base::FilePath csv_path = login_db_directory.Append(
FILE_PATH_LITERAL(password_manager::kExportedPasswordsFileName));
if (base::PathExists(csv_path)) {
bool success = base::DeleteFile(csv_path);
if (success) {
prefs->SetBoolean(password_manager::prefs::kUpmAutoExportCsvNeedsDeletion,
false);
}
base::UmaHistogramBoolean(
"PasswordManager.UPM.AutoExportedCsvStartupDeletionSuccess", success);
}
}
#endif // !BUILDFLAG(USE_LOGIN_DATABASE_AS_BACKEND)
PasswordManagerNotAvailableReason GetPasswordManagerNotActiveReason(
PrefService* pref_service,
PasswordManagerUtilBridgeInterface* util_bridge,
bool is_internal_backend_present) {
if (!is_internal_backend_present) {
return PasswordManagerNotAvailableReason::kInternalBackendNotPresent;
}
if (!HasMinGmsVersionForFullUpmSupport()) {
if (!util_bridge->IsGooglePlayServicesUpdatable()) {
return PasswordManagerNotAvailableReason::kNoGmsCore;
}
return PasswordManagerNotAvailableReason::kOutdatedGmsCore;
}
CHECK(!pref_service->GetBoolean(
password_manager::prefs::kUpmUnmigratedPasswordsExported));
return PasswordManagerNotAvailableReason::kAutoExportPending;
}
void RecordLocalUpmActivationMetrics(
PrefService* pref_service,
PasswordManagerUtilBridgeInterface* util_bridge) {
bool is_internal_backend_present = util_bridge->IsInternalBackendPresent();
bool is_pwm_available =
IsPasswordManagerAvailable(pref_service, is_internal_backend_present);
base::UmaHistogramBoolean("PasswordManager.LocalUpmActivated",
is_pwm_available);
if (!is_pwm_available) {
base::UmaHistogramEnumeration(
"PasswordManager.Android.NotAvailableReason",
GetPasswordManagerNotActiveReason(pref_service, util_bridge,
is_internal_backend_present));
}
}
void InitializeUpmUnmigratedPasswordsExportPref(
PrefService* prefs,
const base::FilePath& login_db_directory) {
// The umigrated passwords export pref should only be set for users who aren't
// already part of UPM.
if (password_manager::GetLegacySplitStoresPref(prefs)) {
return;
}
// If there are no passwords saved, there is nothing to export prior to
// deprecation, so mark the export as done already.
if (prefs->GetBoolean(
password_manager::prefs::kEmptyProfileStoreLoginDatabase) ||
!base::PathExists(login_db_directory.Append(
password_manager::kLoginDataForProfileFileName))) {
prefs->SetBoolean(password_manager::prefs::kUpmUnmigratedPasswordsExported,
true);
}
}
} // namespace
bool IsPasswordManagerAvailable(
const PrefService* prefs,
std::unique_ptr<PasswordManagerUtilBridgeInterface> util_bridge) {
return IsPasswordManagerAvailable(prefs,
util_bridge->IsInternalBackendPresent());
}
bool IsPasswordManagerAvailable(const PrefService* prefs,
bool is_internal_backend_present) {
if (!is_internal_backend_present) {
return false;
}
if (!HasMinGmsVersionForFullUpmSupport()) {
return false;
}
bool upm_already_active = password_manager::GetLegacySplitStoresPref(prefs);
bool exported_umigrated_passwords = prefs->GetBoolean(
password_manager::prefs::kUpmUnmigratedPasswordsExported);
return upm_already_active || exported_umigrated_passwords;
}
bool LoginDbDeprecationReady(PrefService* prefs) {
bool upm_already_active = password_manager::GetLegacySplitStoresPref(prefs);
bool exported_umigrated_passwords = prefs->GetBoolean(
password_manager::prefs::kUpmUnmigratedPasswordsExported);
return upm_already_active || exported_umigrated_passwords;
}
void MaybeDeleteLoginDatabases(
PrefService* pref_service,
const base::FilePath& login_db_directory,
std::unique_ptr<PasswordManagerUtilBridgeInterface> util_bridge) {
// For fresh installs in particular, it's important to do this before
// the backend creation, so that the Android backends are directly wired
// without requiring another restart.
password_manager_android_util::InitializeUpmUnmigratedPasswordsExportPref(
pref_service, login_db_directory);
// If the login DB is being deprecated, only record metrics and do not
// perform the activation algorithm.
RecordLocalUpmActivationMetrics(pref_service, util_bridge.get());
#if !BUILDFLAG(USE_LOGIN_DATABASE_AS_BACKEND)
if (LoginDbDeprecationReady(pref_service)) {
MaybeDeleteLoginDataFiles(pref_service, login_db_directory);
}
if (pref_service->GetBoolean(
password_manager::prefs::kUpmAutoExportCsvNeedsDeletion)) {
DeleteAutoExportedCsv(pref_service, login_db_directory);
}
#endif
}
} // namespace password_manager_android_util
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