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// Copyright 2015 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/password_manager/core/browser/password_manager_util.h"
#include <algorithm>
#include "base/metrics/histogram_macros.h"
#include "base/stl_util.h"
#include "components/autofill/core/browser/autofill_client.h"
#include "components/autofill/core/browser/popup_item_ids.h"
#include "components/autofill/core/common/password_form.h"
#include "components/autofill/core/common/password_generation_util.h"
#include "components/password_manager/core/browser/log_manager.h"
#include "components/password_manager/core/browser/password_manager_client.h"
#include "components/password_manager/core/browser/password_manager_metrics_util.h"
#include "components/password_manager/core/browser/password_store_consumer.h"
#include "components/password_manager/core/common/password_manager_features.h"
#include "components/password_manager/core/common/password_manager_pref_names.h"
#include "components/prefs/pref_service.h"
#include "components/sync/driver/sync_service.h"
using autofill::PasswordForm;
namespace password_manager_util {
namespace {
// Clears username/password on the blacklisted credentials.
class BlacklistedCredentialsCleaner
: public password_manager::PasswordStoreConsumer {
public:
BlacklistedCredentialsCleaner(password_manager::PasswordStore* store,
PrefService* prefs)
: store_(store), prefs_(prefs) {
store_->GetBlacklistLogins(this);
}
~BlacklistedCredentialsCleaner() override = default;
void OnGetPasswordStoreResults(
std::vector<std::unique_ptr<autofill::PasswordForm>> results) override {
bool cleaned_something = false;
for (const auto& form : results) {
DCHECK(form->blacklisted_by_user);
if (!form->username_value.empty() || !form->password_value.empty()) {
cleaned_something = true;
store_->RemoveLogin(*form);
form->username_value.clear();
form->password_value.clear();
store_->AddLogin(*form);
}
}
// Update the pref if no forms were handled. The password store is async,
// therefore, one can't be sure that the changes applied cleanly.
if (!cleaned_something) {
prefs_->SetBoolean(
password_manager::prefs::kBlacklistedCredentialsStripped, true);
}
delete this;
}
private:
password_manager::PasswordStore* store_;
PrefService* prefs_;
DISALLOW_COPY_AND_ASSIGN(BlacklistedCredentialsCleaner);
};
void StartCleaningBlacklisted(
const scoped_refptr<password_manager::PasswordStore>& store,
PrefService* prefs) {
// The object will delete itself once the credentials are retrieved.
new BlacklistedCredentialsCleaner(store.get(), prefs);
}
// Return true if
// 1.|lhs| is non-PSL match, |rhs| is PSL match or
// 2.|lhs| and |rhs| have the same value of |is_public_suffix_match|, and |lhs|
// is preferred while |rhs| is not preferred.
bool IsBetterMatch(const PasswordForm* lhs, const PasswordForm* rhs) {
return std::make_pair(!lhs->is_public_suffix_match, lhs->preferred) >
std::make_pair(!rhs->is_public_suffix_match, rhs->preferred);
}
} // namespace
password_manager::PasswordSyncState GetPasswordSyncState(
const syncer::SyncService* sync_service) {
if (sync_service && sync_service->IsFirstSetupComplete() &&
sync_service->IsSyncActive() &&
sync_service->GetActiveDataTypes().Has(syncer::PASSWORDS)) {
return sync_service->IsUsingSecondaryPassphrase()
? password_manager::SYNCING_WITH_CUSTOM_PASSPHRASE
: password_manager::SYNCING_NORMAL_ENCRYPTION;
}
return password_manager::NOT_SYNCING_PASSWORDS;
}
void FindDuplicates(
std::vector<std::unique_ptr<autofill::PasswordForm>>* forms,
std::vector<std::unique_ptr<autofill::PasswordForm>>* duplicates,
std::vector<std::vector<autofill::PasswordForm*>>* tag_groups) {
if (forms->empty())
return;
// Linux backends used to treat the first form as a prime oneamong the
// duplicates. Therefore, the caller should try to preserve it.
std::stable_sort(forms->begin(), forms->end(), autofill::LessThanUniqueKey());
std::vector<std::unique_ptr<autofill::PasswordForm>> unique_forms;
unique_forms.push_back(std::move(forms->front()));
if (tag_groups) {
tag_groups->clear();
tag_groups->push_back(std::vector<autofill::PasswordForm*>());
tag_groups->front().push_back(unique_forms.front().get());
}
for (auto it = forms->begin() + 1; it != forms->end(); ++it) {
if (ArePasswordFormUniqueKeyEqual(**it, *unique_forms.back())) {
if (tag_groups)
tag_groups->back().push_back(it->get());
duplicates->push_back(std::move(*it));
} else {
if (tag_groups)
tag_groups->push_back(
std::vector<autofill::PasswordForm*>(1, it->get()));
unique_forms.push_back(std::move(*it));
}
}
forms->swap(unique_forms);
}
void TrimUsernameOnlyCredentials(
std::vector<std::unique_ptr<autofill::PasswordForm>>* android_credentials) {
// Remove username-only credentials which are not federated.
base::EraseIf(*android_credentials,
[](const std::unique_ptr<autofill::PasswordForm>& form) {
return form->scheme ==
autofill::PasswordForm::SCHEME_USERNAME_ONLY &&
form->federation_origin.unique();
});
// Set "skip_zero_click" on federated credentials.
std::for_each(
android_credentials->begin(), android_credentials->end(),
[](const std::unique_ptr<autofill::PasswordForm>& form) {
if (form->scheme == autofill::PasswordForm::SCHEME_USERNAME_ONLY)
form->skip_zero_click = true;
});
}
bool IsLoggingActive(const password_manager::PasswordManagerClient* client) {
const password_manager::LogManager* log_manager = client->GetLogManager();
return log_manager && log_manager->IsLoggingActive();
}
bool ManualPasswordGenerationEnabled(syncer::SyncService* sync_service) {
if (!(base::FeatureList::IsEnabled(
password_manager::features::kEnableManualPasswordGeneration) &&
(password_manager_util::GetPasswordSyncState(sync_service) ==
password_manager::SYNCING_NORMAL_ENCRYPTION))) {
return false;
}
LogPasswordGenerationEvent(
autofill::password_generation::PASSWORD_GENERATION_CONTEXT_MENU_SHOWN);
return true;
}
bool ShowAllSavedPasswordsContextMenuEnabled() {
if (!base::FeatureList::IsEnabled(
password_manager::features::
kEnableShowAllSavedPasswordsContextMenu)) {
return false;
}
LogContextOfShowAllSavedPasswordsShown(
password_manager::metrics_util::
SHOW_ALL_SAVED_PASSWORDS_CONTEXT_CONTEXT_MENU);
return true;
}
void UserTriggeredShowAllSavedPasswordsFromContextMenu(
autofill::AutofillClient* autofill_client) {
if (!autofill_client)
return;
autofill_client->ExecuteCommand(
autofill::POPUP_ITEM_ID_ALL_SAVED_PASSWORDS_ENTRY);
password_manager::metrics_util::LogContextOfShowAllSavedPasswordsAccepted(
password_manager::metrics_util::
SHOW_ALL_SAVED_PASSWORDS_CONTEXT_CONTEXT_MENU);
}
void UserTriggeredManualGenerationFromContextMenu(
password_manager::PasswordManagerClient* password_manager_client) {
password_manager_client->GeneratePassword();
LogPasswordGenerationEvent(
autofill::password_generation::PASSWORD_GENERATION_CONTEXT_MENU_PRESSED);
}
void CleanUserDataInBlacklistedCredentials(
password_manager::PasswordStore* store,
PrefService* prefs,
int delay_in_seconds) {
bool need_to_clean = !prefs->GetBoolean(
password_manager::prefs::kBlacklistedCredentialsStripped);
UMA_HISTOGRAM_BOOLEAN("PasswordManager.BlacklistedSites.NeedToBeCleaned",
need_to_clean);
if (need_to_clean) {
base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
FROM_HERE,
base::BindOnce(&StartCleaningBlacklisted, base::WrapRefCounted(store),
prefs),
base::TimeDelta::FromSeconds(delay_in_seconds));
}
}
void FindBestMatches(
std::vector<const PasswordForm*> matches,
std::map<base::string16, const PasswordForm*>* best_matches,
std::vector<const PasswordForm*>* not_best_matches,
const PasswordForm** preferred_match) {
DCHECK(std::all_of(
matches.begin(), matches.end(),
[](const PasswordForm* match) { return !match->blacklisted_by_user; }));
DCHECK(best_matches);
DCHECK(not_best_matches);
DCHECK(preferred_match);
*preferred_match = nullptr;
best_matches->clear();
not_best_matches->clear();
if (matches.empty())
return;
// Sort matches using IsBetterMatch predicate.
std::sort(matches.begin(), matches.end(), IsBetterMatch);
for (const auto* match : matches) {
const base::string16& username = match->username_value;
// The first match for |username| in the sorted array is best match.
if (best_matches->find(username) == best_matches->end())
best_matches->insert(std::make_pair(username, match));
else
not_best_matches->push_back(match);
}
*preferred_match = *matches.begin();
}
} // namespace password_manager_util
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