1 /* 2 * Copyright (C) 2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef DNS_GETADDRINFO_H 17 #define DNS_GETADDRINFO_H 18 19 #include "dns_lookup_name.h" 20 21 #include <endian.h> 22 23 namespace OHOS { 24 namespace nmd { 25 class DnsGetAddrInfo { 26 public: 27 DnsGetAddrInfo() = default; 28 ~DnsGetAddrInfo() = default; 29 30 /** 31 * Get the Addr Info object 32 * 33 * @param host host name 34 * @param serv server 35 * @param hint limits 36 * @param res after look up back data 37 * @param netId designated network 38 * @return int 0-success, <0-failed 39 */ 40 int32_t GetAddrInfo(const std::string &hostName, const std::string &serverName, const AddrInfo &hints, 41 uint16_t netId, std::vector<AddrInfo> &res); 42 43 private: 44 static void ParseAddr(int32_t nAddrs, int32_t nServ, ServData (&ports)[MAXSERVS], AddrData (&addrs)[MAXADDRS], 45 char *outCanon, int32_t canonLen, std::vector<AddrInfo> &out); 46 static int32_t CheckHints(const AddrInfo &hints); 47 static void SwitchFamilyInet(AddrInfo &node, AddrData addrs, uint16_t port); 48 static void SwitchFamilyInet6(AddrInfo &node, AddrData addrs, uint16_t port); 49 }; 50 } // namespace nmd 51 } // namespace OHOS 52 #endif // DNS_GETADDRINFO_H 53