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content / browser / aggregation_service / aggregation_service_storage_sql.cc [blame]
// Copyright 2021 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/aggregation_service/aggregation_service_storage_sql.h"
#include <stddef.h>
#include <stdint.h>
#include <optional>
#include <set>
#include <string>
#include <string_view>
#include <tuple>
#include <utility>
#include <vector>
#include "base/check.h"
#include "base/check_op.h"
#include "base/containers/span.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/metrics/histogram_functions.h"
#include "base/sequence_checker.h"
#include "base/strings/cstring_view.h"
#include "base/time/clock.h"
#include "base/time/time.h"
#include "base/timer/elapsed_timer.h"
#include "content/browser/aggregation_service/aggregatable_report.h"
#include "content/browser/aggregation_service/aggregation_service_storage.h"
#include "content/browser/aggregation_service/proto/aggregatable_report.pb.h"
#include "content/browser/aggregation_service/public_key.h"
#include "content/public/browser/storage_partition.h"
#include "services/network/public/cpp/is_potentially_trustworthy.h"
#include "sql/database.h"
#include "sql/error_delegate_util.h"
#include "sql/meta_table.h"
#include "sql/sqlite_result_code.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/gurl.h"
#include "url/origin.h"
namespace content {
// Version number of the database.
//
// Version 1 - https://crrev.com/c/3038364
// https://crrev.com/c/3462368
// Version 2 - https://crrev.com/c/3733377 (adding report_requests table)
// Version 3 - https://crrev.com/c/3842459 (adding reporting_origin index)
constexpr int AggregationServiceStorageSql::kCurrentVersionNumber = 3;
// Earliest version which can use a `kCurrentVersionNumber` database
// without failing.
constexpr int AggregationServiceStorageSql::kCompatibleVersionNumber = 3;
// Latest version of the database that cannot be upgraded to
// `kCurrentVersionNumber` without razing the database.
constexpr int AggregationServiceStorageSql::kDeprecatedVersionNumber = 0;
namespace {
constexpr base::FilePath::CharType kDatabasePath[] =
FILE_PATH_LITERAL("AggregationService");
// All columns in this table except `report_time` are designed to be "const".
// `request_id` uses AUTOINCREMENT to ensure that IDs aren't reused over the
// lifetime of the DB.
// `report_time` is when the request should be assembled and sent
// `creation_time` is when the request was stored in the database and will be
// used for data deletion.
// `reporting_origin` should match the corresponding proto field, but is
// maintained separately for data deletion.
// `request_proto` is a serialized AggregatableReportRequest proto.
static constexpr base::cstring_view kReportRequestsCreateTableSql =
// clang-format off
"CREATE TABLE IF NOT EXISTS report_requests("
"request_id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,"
"report_time INTEGER NOT NULL,"
"creation_time INTEGER NOT NULL,"
"reporting_origin TEXT NOT NULL,"
"request_proto BLOB NOT NULL)";
// clang-format on
// Used to optimize report request lookup by report_time.
static constexpr base::cstring_view kReportTimeIndexSql =
"CREATE INDEX IF NOT EXISTS report_time_idx ON "
"report_requests(report_time)";
// Will be used to optimize report request lookup by creation_time for data
// clearing, see crbug.com/1340053.
static constexpr base::cstring_view kCreationTimeIndexSql =
"CREATE INDEX IF NOT EXISTS creation_time_idx ON "
"report_requests(creation_time)";
// Used to optimize checking whether there is capacity for the reporting origin.
static constexpr base::cstring_view kReportingOriginIndexSql =
"CREATE INDEX IF NOT EXISTS reporting_origin_idx ON "
"report_requests(reporting_origin)";
bool UpgradeAggregationServiceStorageSqlSchema(sql::Database& db,
sql::MetaTable& meta_table) {
if (meta_table.GetVersionNumber() != 1 && meta_table.GetVersionNumber() != 2)
return false; // Migration is not supported.
sql::Transaction transaction(&db);
if (!transaction.Begin())
return false;
if (meta_table.GetVersionNumber() == 1) {
// == Migrate from version 1 to 2 ==
// Create the new empty table.
if (!db.Execute(kReportRequestsCreateTableSql))
return false;
if (!db.Execute(kReportTimeIndexSql))
return false;
if (!db.Execute(kCreationTimeIndexSql))
return false;
}
// == Migrate from version 2 to 3 ==
// Add the new index.
if (!db.Execute(kReportingOriginIndexSql))
return false;
return meta_table.SetVersionNumber(
AggregationServiceStorageSql::kCurrentVersionNumber) &&
transaction.Commit();
}
void RecordInitializationStatus(
const AggregationServiceStorageSql::InitStatus status) {
base::UmaHistogramEnumeration(
"PrivacySandbox.AggregationService.Storage.Sql.InitStatus", status);
}
} // namespace
AggregationServiceStorageSql::AggregationServiceStorageSql(
bool run_in_memory,
const base::FilePath& path_to_database,
const base::Clock* clock,
int max_stored_requests_per_reporting_origin)
: run_in_memory_(run_in_memory),
path_to_database_(run_in_memory_
? base::FilePath()
: path_to_database.Append(kDatabasePath)),
clock_(*clock),
max_stored_requests_per_reporting_origin_(
max_stored_requests_per_reporting_origin),
db_(sql::DatabaseOptions{.page_size = 4096, .cache_size = 32}) {
DETACH_FROM_SEQUENCE(sequence_checker_);
CHECK(clock);
db_.set_histogram_tag("AggregationService");
// base::Unretained is safe here because the callback will only be called
// while the sql::Database in `db_` is alive, and this instance owns `db_`.
db_.set_error_callback(
base::BindRepeating(&AggregationServiceStorageSql::DatabaseErrorCallback,
base::Unretained(this)));
}
AggregationServiceStorageSql::~AggregationServiceStorageSql() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
}
std::vector<PublicKey> AggregationServiceStorageSql::GetPublicKeys(
const GURL& url) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(network::IsUrlPotentiallyTrustworthy(url));
if (!EnsureDatabaseOpen(DbCreationPolicy::kFailIfAbsent))
return {};
static constexpr char kGetUrlIdSql[] =
"SELECT url_id FROM urls WHERE url = ? AND expiry_time > ?";
sql::Statement get_url_id_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kGetUrlIdSql));
get_url_id_statement.BindString(0, url.spec());
get_url_id_statement.BindTime(1, clock_->Now());
if (!get_url_id_statement.Step())
return {};
int64_t url_id = get_url_id_statement.ColumnInt64(0);
static constexpr char kGetKeysSql[] =
"SELECT key_id, key FROM keys WHERE url_id = ? ORDER BY url_id";
sql::Statement get_keys_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kGetKeysSql));
get_keys_statement.BindInt64(0, url_id);
// Partial results are not returned in case of any error.
std::vector<PublicKey> result;
while (get_keys_statement.Step()) {
if (result.size() >= PublicKeyset::kMaxNumberKeys)
return {};
std::string id = get_keys_statement.ColumnString(0);
std::vector<uint8_t> key;
get_keys_statement.ColumnBlobAsVector(1, &key);
if (id.size() > PublicKey::kMaxIdSize ||
key.size() != PublicKey::kKeyByteLength) {
return {};
}
result.emplace_back(std::move(id), std::move(key));
}
if (!get_keys_statement.Succeeded())
return {};
return result;
}
void AggregationServiceStorageSql::SetPublicKeys(const GURL& url,
const PublicKeyset& keyset) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(network::IsUrlPotentiallyTrustworthy(url));
CHECK_LE(keyset.keys.size(), PublicKeyset::kMaxNumberKeys);
// TODO(crbug.com/40190806): Add an allowlist for helper server urls and
// validate the url.
// Force the creation of the database if it doesn't exist, as we need to
// persist the public keys.
if (!EnsureDatabaseOpen(DbCreationPolicy::kCreateIfAbsent))
return;
sql::Transaction transaction(&db_);
if (!transaction.Begin())
return;
// Replace the public keys for the url. Deleting the existing rows and
// inserting new ones to reduce the complexity.
if (!ClearPublicKeysImpl(url))
return;
if (!InsertPublicKeysImpl(url, keyset))
return;
transaction.Commit();
}
void AggregationServiceStorageSql::ClearPublicKeys(const GURL& url) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(network::IsUrlPotentiallyTrustworthy(url));
if (!EnsureDatabaseOpen(DbCreationPolicy::kFailIfAbsent))
return;
sql::Transaction transaction(&db_);
if (!transaction.Begin())
return;
ClearPublicKeysImpl(url);
transaction.Commit();
}
void AggregationServiceStorageSql::ClearPublicKeysFetchedBetween(
base::Time delete_begin,
base::Time delete_end) {
CHECK(!delete_begin.is_null());
CHECK(!delete_end.is_null());
CHECK(!delete_begin.is_min() || !delete_end.is_max());
sql::Transaction transaction(&db_);
if (!transaction.Begin())
return;
static constexpr char kDeleteCandidateData[] =
"DELETE FROM urls WHERE fetch_time BETWEEN ? AND ? "
"RETURNING url_id";
sql::Statement statement(
db_.GetCachedStatement(SQL_FROM_HERE, kDeleteCandidateData));
statement.BindTime(0, delete_begin);
statement.BindTime(1, delete_end);
while (statement.Step()) {
if (!ClearPublicKeysByUrlId(/*url_id=*/statement.ColumnInt64(0))) {
return;
}
}
if (!statement.Succeeded())
return;
transaction.Commit();
}
void AggregationServiceStorageSql::ClearPublicKeysExpiredBy(
base::Time delete_end) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(!delete_end.is_null());
if (!EnsureDatabaseOpen(DbCreationPolicy::kFailIfAbsent))
return;
sql::Transaction transaction(&db_);
if (!transaction.Begin())
return;
static constexpr char kDeleteUrlRangeSql[] =
"DELETE FROM urls WHERE expiry_time <= ? "
"RETURNING url_id";
sql::Statement delete_urls_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kDeleteUrlRangeSql));
delete_urls_statement.BindTime(0, delete_end);
while (delete_urls_statement.Step()) {
if (!ClearPublicKeysByUrlId(
/*url_id=*/delete_urls_statement.ColumnInt64(0))) {
return;
}
}
if (!delete_urls_statement.Succeeded())
return;
transaction.Commit();
}
bool AggregationServiceStorageSql::InsertPublicKeysImpl(
const GURL& url,
const PublicKeyset& keyset) {
CHECK(!keyset.fetch_time.is_null());
CHECK(!keyset.expiry_time.is_null());
CHECK(db_.HasActiveTransactions());
static constexpr char kInsertUrlSql[] =
"INSERT INTO urls(url, fetch_time, expiry_time) VALUES (?,?,?)";
sql::Statement insert_url_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kInsertUrlSql));
insert_url_statement.BindString(0, url.spec());
insert_url_statement.BindTime(1, keyset.fetch_time);
insert_url_statement.BindTime(2, keyset.expiry_time);
if (!insert_url_statement.Run())
return false;
int64_t url_id = db_.GetLastInsertRowId();
static constexpr char kInsertKeySql[] =
"INSERT INTO keys(url_id, key_id, key) VALUES (?,?,?)";
sql::Statement insert_key_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kInsertKeySql));
for (const PublicKey& key : keyset.keys) {
CHECK_LE(key.id.size(), PublicKey::kMaxIdSize);
CHECK_EQ(key.key.size(), PublicKey::kKeyByteLength);
insert_key_statement.Reset(/*clear_bound_vars=*/true);
insert_key_statement.BindInt64(0, url_id);
insert_key_statement.BindString(1, key.id);
insert_key_statement.BindBlob(2, key.key);
if (!insert_key_statement.Run())
return false;
}
return true;
}
bool AggregationServiceStorageSql::ClearPublicKeysImpl(const GURL& url) {
CHECK(db_.HasActiveTransactions());
static constexpr char kDeleteUrlSql[] =
"DELETE FROM urls WHERE url = ? "
"RETURNING url_id";
sql::Statement delete_url_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kDeleteUrlSql));
delete_url_statement.BindString(0, url.spec());
bool has_matched_url = delete_url_statement.Step();
if (!delete_url_statement.Succeeded())
return false;
if (!has_matched_url)
return true;
return ClearPublicKeysByUrlId(
/*url_id=*/delete_url_statement.ColumnInt64(0));
}
bool AggregationServiceStorageSql::ClearPublicKeysByUrlId(int64_t url_id) {
CHECK(db_.HasActiveTransactions());
static constexpr char kDeleteKeysSql[] = "DELETE FROM keys WHERE url_id = ?";
sql::Statement delete_keys_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kDeleteKeysSql));
delete_keys_statement.BindInt64(0, url_id);
return delete_keys_statement.Run();
}
void AggregationServiceStorageSql::ClearAllPublicKeys() {
sql::Transaction transaction(&db_);
if (!transaction.Begin())
return;
static constexpr char kDeleteAllUrlsSql[] = "DELETE FROM urls";
sql::Statement delete_all_urls_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kDeleteAllUrlsSql));
if (!delete_all_urls_statement.Run())
return;
static constexpr char kDeleteAllKeysSql[] = "DELETE FROM keys";
sql::Statement delete_all_keys_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kDeleteAllKeysSql));
if (!delete_all_keys_statement.Run())
return;
transaction.Commit();
}
bool AggregationServiceStorageSql::ReportingOriginHasCapacity(
std::string_view serialized_reporting_origin) {
static constexpr char kCountRequestSql[] =
"SELECT COUNT(*)FROM report_requests WHERE reporting_origin = ?";
sql::Statement count_request_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kCountRequestSql));
count_request_statement.BindString(0, serialized_reporting_origin);
if (!count_request_statement.Step())
return false;
int64_t count = count_request_statement.ColumnInt64(0);
// Goes above 1000 to ensure the limit is being applied correctly.
base::UmaHistogramCustomCounts(
"PrivacySandbox.AggregationService.Storage.Sql."
"StoredRequestsPerReportingOrigin",
count, /*min=*/1, /*exclusive_max=*/2000, /*buckets=*/50);
return count < max_stored_requests_per_reporting_origin_;
}
void AggregationServiceStorageSql::UpdateReportForSendFailure(
AggregationServiceStorage::RequestId request_id,
base::Time new_report_time) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (!EnsureDatabaseOpen(DbCreationPolicy::kCreateIfAbsent))
return;
sql::Transaction transaction(&db_);
if (!transaction.Begin())
return;
static constexpr char kGetRequestProtoSql[] =
"SELECT request_proto FROM report_requests WHERE request_id=?";
sql::Statement get_request_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kGetRequestProtoSql));
get_request_statement.BindInt64(0, request_id.value());
if (!get_request_statement.Step())
return;
base::span<const uint8_t> blob = get_request_statement.ColumnBlob(0);
proto::AggregatableReportRequest request_proto;
if (!request_proto.ParseFromArray(blob.data(), blob.size()))
return;
if (request_proto.failed_send_attempts() < 0)
return;
request_proto.set_failed_send_attempts(request_proto.failed_send_attempts() +
1);
size_t size = request_proto.ByteSizeLong();
std::vector<uint8_t> serialized_proto(size);
if (!request_proto.SerializeToArray(serialized_proto.data(), size))
return;
static constexpr char kUpdateRequestSql[] =
"UPDATE report_requests SET report_time=?,request_proto=? "
"WHERE request_id=?";
sql::Statement update_request_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kUpdateRequestSql));
update_request_statement.BindTime(0, new_report_time);
update_request_statement.BindBlob(1, serialized_proto);
update_request_statement.BindInt64(2, request_id.value());
if (!update_request_statement.Run())
return;
transaction.Commit();
}
void AggregationServiceStorageSql::StoreRequest(
AggregatableReportRequest request) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
// Force the creation of the database if it doesn't exist, as we need to
// persist the request.
if (!EnsureDatabaseOpen(DbCreationPolicy::kCreateIfAbsent))
return;
sql::Transaction transaction(&db_);
if (!transaction.Begin())
return;
const AggregatableReportSharedInfo& shared_info = request.shared_info();
std::string serialized_reporting_origin =
shared_info.reporting_origin.Serialize();
bool reporting_origin_has_capacity =
ReportingOriginHasCapacity(serialized_reporting_origin);
base::UmaHistogramBoolean(
"PrivacySandbox.AggregationService.Storage.Sql.StoreRequestHasCapacity",
reporting_origin_has_capacity);
if (!reporting_origin_has_capacity)
return;
static constexpr char kStoreRequestSql[] =
"INSERT INTO report_requests("
"report_time,creation_time,reporting_origin,request_proto) "
"VALUES(?,?,?,?)";
sql::Statement store_request_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kStoreRequestSql));
store_request_statement.BindTime(0, shared_info.scheduled_report_time);
store_request_statement.BindTime(1, clock_->Now());
store_request_statement.BindString(2, serialized_reporting_origin);
std::vector<uint8_t> serialized_request = request.Serialize();
// While an empty vector can be a valid proto serialization, report requests
// should always be non-empty.
CHECK(!serialized_request.empty());
store_request_statement.BindBlob(3, serialized_request);
if (!store_request_statement.Run())
return;
transaction.Commit();
}
void AggregationServiceStorageSql::DeleteRequest(
AggregationServiceStorage::RequestId request_id) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (!EnsureDatabaseOpen(DbCreationPolicy::kFailIfAbsent))
return;
DeleteRequestImpl(request_id);
}
bool AggregationServiceStorageSql::DeleteRequestImpl(RequestId request_id) {
static constexpr char kDeleteRequestSql[] =
"DELETE FROM report_requests WHERE request_id=?";
sql::Statement delete_request_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kDeleteRequestSql));
delete_request_statement.BindInt64(0, request_id.value());
return delete_request_statement.Run();
}
std::optional<base::Time> AggregationServiceStorageSql::NextReportTimeAfter(
base::Time strictly_after_time) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (!EnsureDatabaseOpen(DbCreationPolicy::kFailIfAbsent))
return std::nullopt;
return NextReportTimeAfterImpl(strictly_after_time);
}
std::optional<base::Time> AggregationServiceStorageSql::NextReportTimeAfterImpl(
base::Time strictly_after_time) {
static constexpr char kGetRequestsSql[] =
"SELECT MIN(report_time) FROM report_requests WHERE report_time>?";
sql::Statement get_requests_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kGetRequestsSql));
get_requests_statement.BindTime(0, strictly_after_time);
if (get_requests_statement.Step() &&
get_requests_statement.GetColumnType(0) != sql::ColumnType::kNull) {
return get_requests_statement.ColumnTime(0);
}
return std::nullopt;
}
std::vector<AggregationServiceStorage::RequestAndId>
AggregationServiceStorageSql::GetRequestsReportingOnOrBefore(
base::Time not_after_time,
std::optional<int> limit) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(!limit.has_value() || limit.value() > 0);
if (!EnsureDatabaseOpen(DbCreationPolicy::kFailIfAbsent))
return {};
sql::Transaction transaction(&db_);
if (!transaction.Begin()) {
return {};
}
static constexpr char kGetRequestsSql[] =
"SELECT request_id,report_time,request_proto FROM report_requests "
"WHERE report_time<=? ORDER BY report_time LIMIT ?";
sql::Statement get_requests_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kGetRequestsSql));
get_requests_statement.BindTime(0, not_after_time);
// Negative number indicates no limit.
// See https://www.sqlite.org/lang_select.html.
get_requests_statement.BindInt(1, limit.value_or(-1));
// TODO(crbug.com/40230192): Limit the total number of results that can be
// returned in one query.
std::vector<AggregationServiceStorage::RequestAndId> result;
std::vector<AggregationServiceStorage::RequestId> failures;
while (get_requests_statement.Step()) {
AggregationServiceStorage::RequestId request_id{
get_requests_statement.ColumnInt64(0)};
std::optional<AggregatableReportRequest> parsed_request =
AggregatableReportRequest::Deserialize(
get_requests_statement.ColumnBlob(2));
if (!parsed_request) {
failures.push_back(request_id);
continue;
}
// Exclude internals page requests
if (!not_after_time.is_max()) {
base::UmaHistogramCustomTimes(
"PrivacySandbox.AggregationService.Storage.Sql."
"RequestDelayFromUpdatedReportTime2",
not_after_time - get_requests_statement.ColumnTime(1),
/*min=*/base::Milliseconds(1),
/*max=*/base::Days(24),
/*buckets=*/50);
}
result.push_back(AggregationServiceStorage::RequestAndId{
.request = std::move(parsed_request.value()), .id = request_id});
}
if (!get_requests_statement.Succeeded())
return {};
// In case of deserialization failures, remove the request from storage. This
// could occur if the coordinator chosen is no longer on the allowlist. It is
// also possible in case of database corruption.
for (AggregationServiceStorage::RequestId request_id : failures) {
if (!DeleteRequestImpl(request_id)) {
return {};
}
}
if (!transaction.Commit()) {
return {};
}
return result;
}
std::vector<AggregationServiceStorage::RequestAndId>
AggregationServiceStorageSql::GetRequests(
const std::vector<AggregationServiceStorage::RequestId>& ids) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (!EnsureDatabaseOpen(DbCreationPolicy::kFailIfAbsent))
return {};
static constexpr char kGetRequestSql[] =
"SELECT request_id,request_proto FROM report_requests "
"WHERE request_id=?";
sql::Statement statement(
db_.GetCachedStatement(SQL_FROM_HERE, kGetRequestSql));
std::vector<AggregationServiceStorage::RequestAndId> result;
for (AggregationServiceStorage::RequestId id : ids) {
statement.Reset(/*clear_bound_vars=*/true);
statement.BindInt64(0, *id);
if (!statement.Step())
continue;
std::optional<AggregatableReportRequest> parsed_request =
AggregatableReportRequest::Deserialize(statement.ColumnBlob(1));
if (!parsed_request)
continue;
result.push_back(AggregationServiceStorage::RequestAndId{
.request = std::move(*parsed_request),
.id = id,
});
}
return result;
}
std::optional<base::Time>
AggregationServiceStorageSql::AdjustOfflineReportTimes(
base::Time now,
base::TimeDelta min_delay,
base::TimeDelta max_delay) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK_GE(min_delay, base::TimeDelta());
CHECK_GE(max_delay, base::TimeDelta());
CHECK_LE(min_delay, max_delay);
if (!EnsureDatabaseOpen(DbCreationPolicy::kFailIfAbsent))
return std::nullopt;
// Set the report time for all reports that should have been sent before `now`
// to `now` + a random number of microseconds between `min_delay` and
// `max_delay`, both inclusive. We use RANDOM, instead of a C++ method to
// avoid having to pull all reports into memory and update them one by one. We
// use ABS because RANDOM may return a negative integer. We add 1 to the
// difference between `max_delay` and `min_delay` to ensure that the range of
// generated values is inclusive. If `max_delay == min_delay`, we take the
// remainder modulo 1, which is always 0.
static constexpr char kAdjustOfflineReportTimesSql[] =
"UPDATE report_requests SET report_time=?+ABS(RANDOM()%?)"
"WHERE report_time<?";
sql::Statement statement(
db_.GetCachedStatement(SQL_FROM_HERE, kAdjustOfflineReportTimesSql));
statement.BindTime(0, now + min_delay);
statement.BindInt64(1, 1 + (max_delay - min_delay).InMicroseconds());
statement.BindTime(2, now);
statement.Run();
return NextReportTimeAfterImpl(base::Time::Min());
}
std::set<url::Origin>
AggregationServiceStorageSql::GetReportRequestReportingOrigins() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (!EnsureDatabaseOpen(DbCreationPolicy::kFailIfAbsent)) {
return {};
}
std::set<url::Origin> origins;
static constexpr char kSelectRequestReportingOrigins[] =
"SELECT reporting_origin FROM report_requests";
sql::Statement statement(
db_.GetCachedStatement(SQL_FROM_HERE, kSelectRequestReportingOrigins));
while (statement.Step()) {
url::Origin reporting_origin =
url::Origin::Create(GURL(statement.ColumnString(0)));
if (reporting_origin.opaque()) {
continue;
}
origins.insert(std::move(reporting_origin));
}
return origins;
}
void AggregationServiceStorageSql::ClearDataBetween(
base::Time delete_begin,
base::Time delete_end,
StoragePartition::StorageKeyMatcherFunction filter) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (!EnsureDatabaseOpen(DbCreationPolicy::kFailIfAbsent))
return;
// Treat null times as unbounded lower or upper range. This is used by
// browsing data remover.
if (delete_begin.is_null())
delete_begin = base::Time::Min();
if (delete_end.is_null())
delete_end = base::Time::Max();
if (delete_begin.is_min() && delete_end.is_max()) {
ClearAllPublicKeys();
if (filter.is_null()) {
ClearAllRequests();
return;
}
} else {
ClearPublicKeysFetchedBetween(delete_begin, delete_end);
}
ClearRequestsStoredBetween(delete_begin, delete_end, filter);
}
void AggregationServiceStorageSql::ClearRequestsStoredBetween(
base::Time delete_begin,
base::Time delete_end,
StoragePartition::StorageKeyMatcherFunction filter) {
CHECK(!delete_begin.is_null());
CHECK(!delete_end.is_null());
CHECK(!delete_begin.is_min() || !delete_end.is_max() || !filter.is_null());
sql::Transaction transaction(&db_);
if (!transaction.Begin())
return;
static constexpr char kSelectRequestsToDeleteSql[] =
"SELECT request_id,reporting_origin FROM report_requests "
"WHERE creation_time BETWEEN ? AND ?";
sql::Statement select_requests_to_delete_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kSelectRequestsToDeleteSql));
select_requests_to_delete_statement.BindTime(0, delete_begin);
select_requests_to_delete_statement.BindTime(1, delete_end);
while (select_requests_to_delete_statement.Step()) {
url::Origin reporting_origin = url::Origin::Create(
GURL(select_requests_to_delete_statement.ColumnString(1)));
if (filter.is_null() ||
filter.Run(blink::StorageKey::CreateFirstParty(reporting_origin))) {
if (!DeleteRequestImpl(
RequestId(select_requests_to_delete_statement.ColumnInt64(0)))) {
return;
}
}
}
if (!select_requests_to_delete_statement.Succeeded())
return;
transaction.Commit();
}
void AggregationServiceStorageSql::ClearAllRequests() {
static constexpr char kClearAllRequests[] = "DELETE FROM report_requests";
sql::Statement select_requests_to_delete_statement(
db_.GetCachedStatement(SQL_FROM_HERE, kClearAllRequests));
select_requests_to_delete_statement.Run();
}
void AggregationServiceStorageSql::HandleInitializationFailure(
const InitStatus status) {
RecordInitializationStatus(status);
meta_table_.Reset();
db_.Close();
// It's possible that `db_status_` was set by `DatabaseErrorCallback()` during
// a call to `sql::Database::Open()`. Some databases attempt recovery at this
// point, but we opt to delete the database from disk. Recovery can always
// result in partial data loss, even when it appears to succeed. SQLite's
// documentation discusses how some use cases can tolerate partial data loss,
// while others cannot: <https://www.sqlite.org/recovery.html>.
if (db_status_ == DbStatus::kClosedDueToCatastrophicError) {
const bool delete_ok = sql::Database::Delete(path_to_database_);
LOG_IF(WARNING, !delete_ok)
<< "Failed to delete database after catastrophic SQLite error";
}
db_status_ = DbStatus::kClosed;
}
bool AggregationServiceStorageSql::EnsureDatabaseOpen(
DbCreationPolicy creation_policy) {
if (!db_status_) {
if (run_in_memory_) {
db_status_ = DbStatus::kDeferringCreation;
} else {
db_status_ = base::PathExists(path_to_database_)
? DbStatus::kDeferringOpen
: DbStatus::kDeferringCreation;
}
}
switch (*db_status_) {
// If the database file has not been created, we defer creation until
// storage needs to be used for an operation which needs to operate even on
// an empty database.
case DbStatus::kDeferringCreation:
if (creation_policy == DbCreationPolicy::kFailIfAbsent)
return false;
break;
case DbStatus::kDeferringOpen:
break;
case DbStatus::kOpen:
return true;
case DbStatus::kClosed:
case DbStatus::kClosedDueToCatastrophicError:
return false;
}
if (run_in_memory_) {
if (!db_.OpenInMemory()) {
HandleInitializationFailure(InitStatus::kFailedToOpenDbInMemory);
return false;
}
} else {
const base::FilePath& dir = path_to_database_.DirName();
const bool dir_exists_or_was_created =
base::DirectoryExists(dir) || base::CreateDirectory(dir);
if (!dir_exists_or_was_created) {
DLOG(ERROR)
<< "Failed to create directory for AggregationService database";
HandleInitializationFailure(InitStatus::kFailedToCreateDir);
return false;
}
if (!db_.Open(path_to_database_)) {
HandleInitializationFailure(InitStatus::kFailedToOpenDbFile);
return false;
}
}
if (!InitializeSchema(db_status_ == DbStatus::kDeferringCreation)) {
HandleInitializationFailure(InitStatus::kFailedToInitializeSchema);
return false;
}
db_status_ = DbStatus::kOpen;
RecordInitializationStatus(InitStatus::kSuccess);
return true;
}
bool AggregationServiceStorageSql::InitializeSchema(bool db_empty) {
if (db_empty)
return CreateSchema();
if (!meta_table_.Init(&db_, kCurrentVersionNumber, kCompatibleVersionNumber))
return false;
int current_version = meta_table_.GetVersionNumber();
if (current_version == kCurrentVersionNumber)
return true;
if (current_version <= kDeprecatedVersionNumber ||
meta_table_.GetCompatibleVersionNumber() > kCurrentVersionNumber ||
!UpgradeAggregationServiceStorageSqlSchema(db_, meta_table_)) {
// The database version is either deprecated, the version is too new to be
// used, or the attempt to upgrade failed. In the second case (version too
// new), the DB will never work until Chrome is re-upgraded. Assume the user
// will continue using this Chrome version and raze the DB to get
// aggregation service storage working.
db_.Raze();
meta_table_.Reset();
return CreateSchema();
}
return true; // Upgrade was successful.
}
bool AggregationServiceStorageSql::CreateSchema() {
base::ElapsedThreadTimer timer;
sql::Transaction transaction(&db_);
if (!transaction.Begin())
return false;
// All of the columns in this table are designed to be "const".
// `url` is the helper server url.
// `fetch_time` is when the key is fetched and inserted into database, and
// will be used for data deletion.
// `expiry_time` is when the key becomes invalid and will be used for data
// pruning.
static constexpr char kUrlsTableSql[] =
"CREATE TABLE IF NOT EXISTS urls("
" url_id INTEGER PRIMARY KEY NOT NULL,"
" url TEXT NOT NULL,"
" fetch_time INTEGER NOT NULL,"
" expiry_time INTEGER NOT NULL)";
if (!db_.Execute(kUrlsTableSql))
return false;
static constexpr char kUrlsByUrlIndexSql[] =
"CREATE UNIQUE INDEX IF NOT EXISTS urls_by_url_idx "
" ON urls(url)";
if (!db_.Execute(kUrlsByUrlIndexSql))
return false;
// Will be used to optimize key lookup by fetch time for data clearing (see
// crbug.com/1231689).
static constexpr char kFetchTimeIndexSql[] =
"CREATE INDEX IF NOT EXISTS fetch_time_idx ON urls(fetch_time)";
if (!db_.Execute(kFetchTimeIndexSql))
return false;
// Will be used to optimize key lookup by expiry time for data pruning (see
// crbug.com/1231696).
static constexpr char kExpiryTimeIndexSql[] =
"CREATE INDEX IF NOT EXISTS expiry_time_idx ON urls(expiry_time)";
if (!db_.Execute(kExpiryTimeIndexSql))
return false;
// All of the columns in this table are designed to be "const".
// `url_id` is the primary key of a row in the `urls` table.
// `key_id` is an arbitrary string identifying the key which is set by helper
// servers and not required to be unique, but is required to be unique per
// url.
// `key` is the public key as a sequence of bytes.
static constexpr char kKeysTableSql[] =
"CREATE TABLE IF NOT EXISTS keys("
" url_id INTEGER NOT NULL,"
" key_id TEXT NOT NULL,"
" key BLOB NOT NULL,"
" PRIMARY KEY(url_id, key_id)) WITHOUT ROWID";
if (!db_.Execute(kKeysTableSql))
return false;
// See constant definitions above for documentation.
if (!db_.Execute(kReportRequestsCreateTableSql))
return false;
if (!db_.Execute(kReportTimeIndexSql))
return false;
if (!db_.Execute(kCreationTimeIndexSql))
return false;
if (!db_.Execute(kReportingOriginIndexSql))
return false;
if (!meta_table_.Init(&db_, kCurrentVersionNumber,
kCompatibleVersionNumber)) {
return false;
}
if (timer.is_supported()) {
base::UmaHistogramMediumTimes(
"PrivacySandbox.AggregationService.Storage.Sql.CreationTime2",
timer.Elapsed());
}
return transaction.Commit();
}
// The interaction between this error callback and `sql::Database` is complex.
// Here are just a few of the sharp edges:
//
// 1. This callback would become reentrant if it called a `sql::Database` method
// that could encounter an error.
//
// 2. This callback may be invoked multiple times by a single call to a
// `sql::Database` method.
//
// 3. This callback may see phantom errors that do not otherwise bubble up via
// return values. This can happen because `sql::Database` runs the error
// callback eagerly despite the fact that some of its methods ignore certain
// errors.
//
// A concrete example: opening the database may run the error callback *and*
// return true if `sql::Database::Open()` encounters a transient error, but
// opens the database successfully on the second try.
//
// Reducing this complexity will likely require a redesign of `sql::Database`'s
// error handling interface. See <https://crbug.com/40199997>.
void AggregationServiceStorageSql::DatabaseErrorCallback(int extended_error,
sql::Statement* stmt) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
// Inform the test framework that we encountered this error.
std::ignore = sql::Database::IsExpectedSqliteError(extended_error);
if (ignore_errors_for_testing_) {
return;
}
// Consider the database closed to avoid further errors. Note that the value
// we write to `db_status_` may be subsequently overwritten elsewhere if
// `sql::Database` ignores the error (see sharp edge #3 above).
if (sql::IsErrorCatastrophic(extended_error)) {
db_status_ = DbStatus::kClosedDueToCatastrophicError;
} else {
db_status_ = DbStatus::kClosed;
}
// Prevent future uses of `db_` from having any effect until we unpoison it
// with `db_.Close()`.
if (db_.is_open()) {
db_.Poison();
}
base::UmaHistogramEnumeration(
"PrivacySandbox.AggregationService.Storage.Sql.Error",
sql::ToSqliteLoggedResultCode(extended_error));
}
} // namespace content