netd/server/ResolverController.cpp

/*
 * Copyright (C) 2011 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.
 */

#define LOG_TAG "ResolverController"
#define DBG 0

#include <cutils/log.h>

#include <net/if.h>

// NOTE: <resolv_netid.h> is a private C library header that provides
//       declarations for _resolv_set_nameservers_for_net and
//       _resolv_flush_cache_for_net
#include <resolv_netid.h>
#include <resolv_params.h>

#include "ResolverController.h"

int ResolverController::setDnsServers(unsigned netId, const char* searchDomains,
        const char** servers, int numservers, const __res_params* params) {
    if (DBG) {
        ALOGD("setDnsServers netId = %u\n", netId);
    }
    _resolv_set_nameservers_for_net(netId, servers, numservers, searchDomains, params);
    return 0;
}

int ResolverController::clearDnsServers(unsigned netId) {
    _resolv_set_nameservers_for_net(netId, NULL, 0, "", NULL);
    if (DBG) {
        ALOGD("clearDnsServers netId = %u\n", netId);
    }
    return 0;
}

int ResolverController::flushDnsCache(unsigned netId) {
    if (DBG) {
        ALOGD("flushDnsCache netId = %u\n", netId);
    }

    _resolv_flush_cache_for_net(netId);

    return 0;
}