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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/nqe/network_quality_estimator_util.h"
#include <memory>
#include "base/check_op.h"
#include "base/functional/bind.h"
#include "base/notreached.h"
#include "net/base/address_list.h"
#include "net/base/ip_address.h"
#include "net/base/ip_endpoint.h"
#include "net/base/net_errors.h"
#include "net/dns/host_resolver.h"
#include "net/dns/public/host_resolver_source.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"
#include "url/scheme_host_port.h"
namespace net::nqe {
namespace {
bool IsPrivateHost(HostResolver* host_resolver,
url::SchemeHostPort scheme_host_port,
const NetworkAnonymizationKey& network_anonymization_key,
NetLogWithSource net_log) {
// Try resolving |host_port_pair.host()| synchronously.
HostResolver::ResolveHostParameters parameters;
parameters.source = HostResolverSource::LOCAL_ONLY;
std::unique_ptr<HostResolver::ResolveHostRequest> request =
host_resolver->CreateRequest(std::move(scheme_host_port),
network_anonymization_key, net_log,
parameters);
int rv = request->Start(base::BindOnce([](int error) { NOTREACHED(); }));
DCHECK_NE(rv, ERR_IO_PENDING);
if (rv == OK && request->GetAddressResults() &&
!request->GetAddressResults()->empty()) {
// Checking only the first address should be sufficient.
IPEndPoint ip_endpoint = request->GetAddressResults()->front();
IPAddress ip_address = ip_endpoint.address();
if (!ip_address.IsPubliclyRoutable())
return true;
}
return false;
}
} // namespace
namespace internal {
bool IsRequestForPrivateHost(const URLRequest& request,
NetLogWithSource net_log) {
// Using the request's NetworkAnonymizationKey isn't necessary for privacy
// reasons, but is needed to maximize the chances of a cache hit.
return IsPrivateHost(
request.context()->host_resolver(), url::SchemeHostPort(request.url()),
request.isolation_info().network_anonymization_key(), net_log);
}
bool IsPrivateHostForTesting(
HostResolver* host_resolver,
url::SchemeHostPort scheme_host_port,
const NetworkAnonymizationKey& network_anonymization_key) {
return IsPrivateHost(host_resolver, std::move(scheme_host_port),
network_anonymization_key, NetLogWithSource());
}
} // namespace internal
} // namespace net::nqe
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