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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/plus_addresses/affiliations/plus_address_affiliation_match_helper.h"
#include <string>
#include <vector>
#include "base/barrier_callback.h"
#include "base/check_deref.h"
#include "base/metrics/histogram_functions.h"
#include "components/affiliations/core/browser/affiliation_service.h"
#include "components/affiliations/core/browser/affiliation_utils.h"
#include "components/plus_addresses/features.h"
#include "components/plus_addresses/plus_address_service.h"
#include "components/plus_addresses/plus_address_types.h"
namespace plus_addresses {
namespace {
using affiliations::FacetURI;
constexpr char kUmaKeyResponseTime[] =
"PlusAddresses.AffiliationRequest.ResponseTime";
} // namespace
PlusAddressAffiliationMatchHelper::PlusAddressAffiliationMatchHelper(
PlusAddressService* plus_address_service,
affiliations::AffiliationService* affiliation_service)
: plus_address_service_(CHECK_DEREF(plus_address_service)),
affiliation_service_(CHECK_DEREF(affiliation_service)) {}
PlusAddressAffiliationMatchHelper::~PlusAddressAffiliationMatchHelper() =
default;
void PlusAddressAffiliationMatchHelper::GetAffiliatedPlusProfiles(
const affiliations::FacetURI& facet,
AffiliatedPlusProfilesCallback result_callback) {
PSLExtensionCallback callback =
base::BindOnce(&PlusAddressAffiliationMatchHelper::RequestGroupInfo,
weak_factory_.GetWeakPtr(), std::move(result_callback),
facet, base::TimeTicks::Now());
if (psl_extensions_.has_value()) {
std::move(callback).Run(psl_extensions_.value());
return;
}
psl_extensions_callbacks_.push_back(std::move(callback));
if (psl_extensions_callbacks_.size() > 1) {
// If there is more than one request in the queue, wait until the
// OnPSLExtensionsReceived is triggered.
return;
}
affiliation_service_->GetPSLExtensions(base::BindOnce(
&PlusAddressAffiliationMatchHelper::OnPSLExtensionsReceived,
weak_factory_.GetWeakPtr()));
}
void PlusAddressAffiliationMatchHelper::OnPSLExtensionsReceived(
std::vector<std::string> psl_extensions) {
psl_extensions_ = base::flat_set<std::string>(
std::make_move_iterator(psl_extensions.begin()),
std::make_move_iterator(psl_extensions.end()));
for (auto& callback : std::exchange(psl_extensions_callbacks_, {})) {
std::move(callback).Run(psl_extensions_.value());
}
}
void PlusAddressAffiliationMatchHelper::RequestGroupInfo(
AffiliatedPlusProfilesCallback result_callback,
const FacetURI& facet,
base::TimeTicks start_time,
const base::flat_set<std::string>& psl_extensions) {
GURL url = GURL(facet.potentially_invalid_spec());
std::string domain =
affiliations::GetExtendedTopLevelDomain(url, psl_extensions);
// See the `net::registry_controlled_domains::GetDomainAndRegistry`
// documentation for cases where the extended domain can be empty.
if (domain.empty()) {
std::move(result_callback).Run({});
return;
}
// Here the requested facet is replaced by the top level domain while honoring
// the psl extension list. This is done in an effort to capture subdomains
// that might have not included yet in the affiliation data. Notably, this
// assumes that top level domains are included in the same affiliation group
// as subdomains.
GURL::Replacements repl;
repl.SetHostStr(domain);
FacetURI requested_facet =
FacetURI::FromPotentiallyInvalidSpec(url.ReplaceComponents(repl).spec());
affiliation_service_->GetGroupingInfo(
{requested_facet},
base::BindOnce(&PlusAddressAffiliationMatchHelper::OnGroupingInfoReceived,
weak_factory_.GetWeakPtr(), std::move(result_callback),
start_time, psl_extensions));
}
void PlusAddressAffiliationMatchHelper::OnGroupingInfoReceived(
AffiliatedPlusProfilesCallback result_callback,
base::TimeTicks start_time,
const base::flat_set<std::string>& psl_extensions,
const std::vector<affiliations::GroupedFacets>& results) {
// GetGroupingInfo() returns an affiliation group for each facet. Asking for
// only one facet means that it must return only one group that **always**
// includes requested facet itself.
CHECK_EQ(1U, results.size());
std::vector<PlusProfile> matches;
for (const affiliations::Facet& group_facet : results[0].facets) {
// Android facets
if (group_facet.uri.IsValidAndroidFacetURI()) {
if (std::optional<PlusProfile> profile =
plus_address_service_->GetPlusProfile(group_facet.uri)) {
matches.push_back(std::move(*profile));
}
continue;
}
// Web facets
for (const PlusProfile& stored_profile :
plus_address_service_->GetPlusProfiles()) {
if (affiliations::IsExtendedPublicSuffixDomainMatch(
GURL(stored_profile.facet.potentially_invalid_spec()),
GURL(group_facet.uri.potentially_invalid_spec()),
psl_extensions)) {
matches.push_back(std::move(stored_profile));
}
}
}
// Remove duplicates.
std::sort(matches.begin(), matches.end(), PlusProfileFacetComparator());
matches.erase(std::unique(matches.begin(), matches.end()), matches.end());
base::UmaHistogramTimes(kUmaKeyResponseTime,
base::TimeTicks::Now() - start_time);
std::move(result_callback).Run(std::move(matches));
}
} // namespace plus_addresses
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