1 /* 2 * Copyright (C) 2023 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 MDNS_COMMON_H 17 #define MDNS_COMMON_H 18 19 #include <cstddef> 20 #include <map> 21 #include <string> 22 #include <vector> 23 24 #include "net_manager_constants.h" 25 26 namespace OHOS { 27 namespace NetManagerStandard { 28 29 using MDnsPayload = std::vector<uint8_t>; 30 using TxtRecord = std::map<std::string, std::vector<uint8_t>>; 31 using TxtRecordEncoded = std::vector<uint8_t>; 32 33 static constexpr int32_t LOAD_SA_TIMEOUT = 5; 34 static constexpr int32_t SYNC_TIMEOUT = 5; 35 static constexpr size_t MDNS_MAX_DOMAIN_LABEL = 63; 36 static constexpr size_t MDNS_MAX_DOMAIN = 254; 37 static constexpr const char *MDNS_TOP_DOMAIN_DEFAULT = ".local"; 38 static constexpr const char *MDNS_DOMAIN_SPLITER_STR = "."; 39 static constexpr const char *MDNS_HOSTPORT_SPLITER_STR = ":"; 40 static constexpr char MDNS_DOMAIN_SPLITER = '.'; 41 42 bool EndsWith(const std::string_view &str, const std::string_view &pat); 43 bool StartsWith(const std::string_view &str, const std::string_view &pat); 44 std::vector<std::string_view> Split(const std::string_view &s, char seperator); 45 46 bool IsNameValid(const std::string &name); 47 bool IsTypeValid(const std::string &type); 48 bool IsPortValid(int port); 49 bool IsInstanceValid(const std::string &instance); 50 51 // Size limits (https://www.rfc-editor.org/rfc/rfc1035#section-2.3.4) 52 // Read https://devblogs.microsoft.com/oldnewthing/20120412-00/?p=7873 53 bool IsDomainValid(const std::string &domain); 54 void ExtractNameAndType(const std::string &instance, std::string &name, std::string& type); 55 56 } // namespace NetManagerStandard 57 } // namespace OHOS 58 #endif // MDNS_COMMON_H 59