client/openscreen/mdns_service_info.cpp

/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "client/openscreen/mdns_service_info.h"

#include "adb_mdns.h"

using namespace openscreen;

namespace mdns {

ErrorOr<ServiceInfo> DnsSdInstanceEndpointToServiceInfo(
        const discovery::DnsSdInstanceEndpoint& endpoint) {
    ServiceInfo service_info;
    // Check if |endpoint| is a known adb service name
    for (int i = 0; i < kNumADBDNSServices; ++i) {
        if (endpoint.service_id() == kADBDNSServices[i]) {
            service_info.service_name = endpoint.service_id();
            service_info.instance_name = endpoint.instance_id();
            break;
        }
        if (i == kNumADBDNSServices - 1) {
            LOG(ERROR) << "Got unknown service name [" << endpoint.service_id() << "]";
            return Error::Code::kParameterInvalid;
        }
    }

    service_info.port = endpoint.port();
    for (const IPAddress& address : endpoint.addresses()) {
        if (!service_info.v4_address && address.IsV4()) {
            service_info.v4_address = address;
        } else if (!service_info.v6_address && address.IsV6()) {
            service_info.v6_address = address;
        }
    }
    CHECK(service_info.v4_address || service_info.v6_address);
    return service_info;
}

}  // namespace mdns