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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/attribution_reporting/os_registrations_table.h"
#include <set>
#include <string_view>
#include <utility>
#include "base/check.h"
#include "base/check_op.h"
#include "base/containers/flat_set.h"
#include "base/memory/raw_ref.h"
#include "base/sequence_checker.h"
#include "base/time/time.h"
#include "components/attribution_reporting/constants.h"
#include "content/browser/attribution_reporting/attribution_resolver_delegate.h"
#include "content/browser/attribution_reporting/sql_queries.h"
#include "content/browser/attribution_reporting/sql_utils.h"
#include "content/public/browser/storage_partition.h"
#include "sql/database.h"
#include "sql/statement.h"
#include "sql/statement_id.h"
#include "sql/transaction.h"
#include "third_party/blink/public/common/storage_key/storage_key.h"
#include "url/origin.h"
namespace {
// Conservatively keep OS registration data for a buffer window of 15 days
// beyond max source expiry.
constexpr base::TimeDelta kOsRegistrationsExpiry =
attribution_reporting::kMaxSourceExpiry + base::Days(15);
} // namespace
namespace content {
OsRegistrationsTable::OsRegistrationsTable(
const AttributionResolverDelegate* delegate)
: delegate_(
raw_ref<const AttributionResolverDelegate>::from_ptr(delegate)) {}
OsRegistrationsTable::~OsRegistrationsTable() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
}
bool OsRegistrationsTable::CreateTable(sql::Database* db) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
sql::Transaction transaction(db);
if (!transaction.Begin()) {
return false;
}
static constexpr char kOsRegistrationsTableSql[] =
"CREATE TABLE os_registrations("
"registration_origin TEXT NOT NULL,"
"time INTEGER NOT NULL,"
"PRIMARY KEY(registration_origin,time))WITHOUT ROWID";
if (!db->Execute(kOsRegistrationsTableSql)) {
return false;
}
static constexpr char kOsRegistrationsTimeIndexSql[] =
"CREATE INDEX os_registrations_time_idx "
"ON os_registrations(time)";
if (!db->Execute(kOsRegistrationsTimeIndexSql)) {
return false;
}
return transaction.Commit();
}
void OsRegistrationsTable::AddOsRegistrations(
sql::Database* db,
const base::flat_set<url::Origin>& origins) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
// Only delete expired OS registrations periodically to avoid excessive DB
// operations.
const base::TimeDelta delete_frequency =
delegate_->GetDeleteExpiredOsRegistrationsFrequency();
CHECK_GE(delete_frequency, base::TimeDelta());
const base::Time now = base::Time::Now();
if (now - last_cleared_ >= delete_frequency &&
DeleteExpiredOsRegistrations(db)) {
last_cleared_ = now;
}
// The primary key is (registration_origin,time), therefore adding `OR IGNORE`
// to avoid the constraint error on duplicate primary key in the edge case of
// concurrent registrations.
static constexpr char kInsertOsRegistrationsSql[] =
"INSERT OR IGNORE INTO os_registrations(registration_origin,time)"
"VALUES(?,?)";
sql::Statement insert_os_registration_statement(
db->GetCachedStatement(SQL_FROM_HERE, kInsertOsRegistrationsSql));
insert_os_registration_statement.BindTime(1, now);
for (const url::Origin& origin : origins) {
insert_os_registration_statement.Reset(/*clear_bound_vars=*/false);
insert_os_registration_statement.BindString(0, origin.Serialize());
insert_os_registration_statement.Run();
}
}
bool OsRegistrationsTable::DeleteExpiredOsRegistrations(sql::Database* db) {
sql::Statement statement(db->GetCachedStatement(
SQL_FROM_HERE, attribution_queries::kDeleteExpiredOsRegistrationsSql));
statement.BindTime(0, base::Time::Now() - kOsRegistrationsExpiry);
return statement.Run();
}
void OsRegistrationsTable::ClearAllDataAllTime(sql::Database* db) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
static constexpr char kDeleteAllOsRegistrations[] =
"DELETE FROM os_registrations";
sql::Statement statement(
db->GetCachedStatement(SQL_FROM_HERE, kDeleteAllOsRegistrations));
statement.Run();
}
void OsRegistrationsTable::ClearDataForOriginsInRange(
sql::Database* db,
base::Time delete_begin,
base::Time delete_end,
StoragePartition::StorageKeyMatcherFunction filter) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (filter.is_null()) {
ClearAllDataInRange(db, delete_begin, delete_end);
return;
}
sql::Statement delete_statement(db->GetCachedStatement(
SQL_FROM_HERE, attribution_queries::kDeleteOsRegistrationAtTimeSql));
sql::Statement select_statement(db->GetCachedStatement(
SQL_FROM_HERE,
attribution_queries::kSelectOsRegistrationsForDeletionSql));
select_statement.BindTime(0, delete_begin);
select_statement.BindTime(1, delete_end);
while (select_statement.Step()) {
std::string_view registration_origin = select_statement.ColumnStringView(0);
if (filter.Run(blink::StorageKey::CreateFirstParty(
DeserializeOrigin(registration_origin)))) {
// See https://www.sqlite.org/isolation.html for why it's OK for this
// DELETE to be interleaved in the surrounding SELECT.
delete_statement.Reset(/*clear_bound_vars=*/false);
delete_statement.BindString(0, registration_origin);
delete_statement.BindTime(1, select_statement.ColumnTime(1));
delete_statement.Run();
}
}
}
void OsRegistrationsTable::ClearAllDataInRange(sql::Database* db,
base::Time delete_begin,
base::Time delete_end) {
CHECK(!((delete_begin.is_null() || delete_begin.is_min()) &&
delete_end.is_max()));
sql::Statement statement(db->GetCachedStatement(
SQL_FROM_HERE, attribution_queries::kDeleteOsRegistrationsRangeSql));
statement.BindTime(0, delete_begin);
statement.BindTime(1, delete_end);
statement.Run();
}
void OsRegistrationsTable::ClearDataForRegistrationOrigin(
sql::Database* db,
base::Time delete_begin,
base::Time delete_end,
const url::Origin& registration_origin) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
sql::Statement statement(db->GetCachedStatement(
SQL_FROM_HERE, attribution_queries::kDeleteOsRegistrationSql));
statement.BindString(0, registration_origin.Serialize());
statement.BindTime(1, delete_begin);
statement.BindTime(2, delete_end);
statement.Run();
}
void OsRegistrationsTable::AppendOsRegistrationDataKeys(
sql::Database* db,
std::set<AttributionDataModel::DataKey>& keys) {
sql::Statement statement(db->GetCachedStatement(
SQL_FROM_HERE, attribution_queries::kGetOsRegistrationDataKeysSql));
while (statement.Step()) {
url::Origin registration_origin =
DeserializeOrigin(statement.ColumnStringView(0));
if (registration_origin.opaque()) {
continue;
}
keys.emplace(std::move(registration_origin));
}
}
void OsRegistrationsTable::SetDelegate(
const AttributionResolverDelegate& delegate) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
delegate_ = delegate;
}
} // namespace content
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