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// Copyright 2024 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/tpcd/metadata/common/manager_base.h"
#include "components/content_settings/core/common/content_settings.h"
#include "components/content_settings/core/common/content_settings_rules.h"
#include "components/content_settings/core/common/content_settings_utils.h"
#include "components/content_settings/core/common/host_indexed_content_settings.h"
#include "net/base/features.h"
namespace tpcd::metadata::common {
ManagerBase::ManagerBase() = default;
ManagerBase::~ManagerBase() = default;
// Whether to bypass any available grants from the Third Party Cookie
// Deprecation TPCD Metadata.
bool IgnoreTpcdDtGracePeriodMetadataGrant(
const content_settings::SettingInfo* info) {
switch (info->metadata.tpcd_metadata_cohort()) {
case content_settings::mojom::TpcdMetadataCohort::GRACE_PERIOD_FORCED_OFF:
return true;
case content_settings::mojom::TpcdMetadataCohort::DEFAULT:
case content_settings::mojom::TpcdMetadataCohort::GRACE_PERIOD_FORCED_ON:
return false;
}
NOTREACHED() << "Invalid enum value: "
<< info->metadata.tpcd_metadata_cohort();
}
ContentSetting ManagerBase::GetContentSetting(
const content_settings::HostIndexedContentSettings& grants,
const GURL& third_party_url,
const GURL& first_party_url,
content_settings::SettingInfo* out_info) const {
ContentSetting result = CONTENT_SETTING_BLOCK;
if (base::FeatureList::IsEnabled(net::features::kTpcdMetadataGrants)) {
const content_settings::RuleEntry* found =
grants.Find(third_party_url, first_party_url);
if (found) {
result = content_settings::ValueToContentSetting(found->second.value);
if (out_info) {
out_info->SetAttributes(*found);
}
}
}
// The `first_party_url` and `third_party_url` wasn't granted access by any of
// the available metadata entries.
if (out_info && result == CONTENT_SETTING_BLOCK) {
out_info->primary_pattern = ContentSettingsPattern::Wildcard();
out_info->secondary_pattern = ContentSettingsPattern::Wildcard();
out_info->metadata = {};
}
// The `first_party_url` and `third_party_url` was granted access by at least
// one of the available metadata entries, but shouldn't be considered as its
// grace period is forced off.
else if (out_info && IgnoreTpcdDtGracePeriodMetadataGrant(out_info)) {
result = CONTENT_SETTING_BLOCK;
}
return result;
}
ContentSettingsForOneType ManagerBase::GetContentSettingForOneType(
const content_settings::HostIndexedContentSettings& grants) const {
ContentSettingsForOneType result;
for (const auto& RuleEntry : grants) {
result.emplace_back(
RuleEntry.first.primary_pattern, RuleEntry.first.secondary_pattern,
RuleEntry.second.value.Clone(), content_settings::ProviderType::kNone,
false, RuleEntry.second.metadata.Clone());
}
return result;
}
} // namespace tpcd::metadata::common
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