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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/heavy_ad_intervention/heavy_ad_blocklist.h"
#include <string>
#include <utility>
#include "base/metrics/field_trial_params.h"
#include "components/blocklist/opt_out_blocklist/opt_out_store.h"
#include "components/heavy_ad_intervention/heavy_ad_features.h"
namespace heavy_ad_intervention {
namespace {
const char kHostDurationHours[] = "host-duration-hours";
const char kHostThreshold[] = "host-threshold";
const char kHostsInMemory[] = "hosts-in-memory";
const char kTypeVersion[] = "type-version";
int GetBlocklistParamValue(const std::string& param, int default_value) {
return base::GetFieldTrialParamByFeatureAsInt(
features::kHeavyAdPrivacyMitigations, param, default_value);
}
} // namespace
HeavyAdBlocklist::HeavyAdBlocklist(
std::unique_ptr<blocklist::OptOutStore> opt_out_store,
base::Clock* clock,
blocklist::OptOutBlocklistDelegate* blocklist_delegate)
: OptOutBlocklist(std::move(opt_out_store), clock, blocklist_delegate) {
Init();
}
HeavyAdBlocklist::~HeavyAdBlocklist() = default;
bool HeavyAdBlocklist::ShouldUseSessionPolicy(base::TimeDelta* duration,
size_t* history,
int* threshold) const {
return false;
}
bool HeavyAdBlocklist::ShouldUsePersistentPolicy(base::TimeDelta* duration,
size_t* history,
int* threshold) const {
return false;
}
bool HeavyAdBlocklist::ShouldUseHostPolicy(base::TimeDelta* duration,
size_t* history,
int* threshold,
size_t* max_hosts) const {
const int kDefaultHostsInMemory = 50;
const int kDefaultHostDurationHours = 24;
const int kDefaultHostThreshold = 5;
*max_hosts = GetBlocklistParamValue(kHostsInMemory, kDefaultHostsInMemory);
*duration = base::Hours(
GetBlocklistParamValue(kHostDurationHours, kDefaultHostDurationHours));
*history = GetBlocklistParamValue(kHostThreshold, kDefaultHostThreshold);
*threshold = GetBlocklistParamValue(kHostThreshold, kDefaultHostThreshold);
return true;
}
bool HeavyAdBlocklist::ShouldUseTypePolicy(base::TimeDelta* duration,
size_t* history,
int* threshold) const {
return false;
}
blocklist::BlocklistData::AllowedTypesAndVersions
HeavyAdBlocklist::GetAllowedTypes() const {
return {{static_cast<int>(HeavyAdBlocklistType::kHeavyAdOnlyType),
GetBlocklistParamValue(kTypeVersion, 0)}};
}
} // namespace heavy_ad_intervention
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