| /* |
| * |
| * Copyright (c) 2020 Project CHIP Authors |
| * |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include <cstddef> |
| |
| #include <lib/dnssd/minimal_mdns/core/Constants.h> |
| #include <lib/dnssd/minimal_mdns/core/QName.h> |
| #include <lib/dnssd/minimal_mdns/core/RecordWriter.h> |
| |
| #include <lib/support/BufferWriter.h> |
| |
| namespace mdns { |
| namespace Minimal { |
| |
| /// A generic Reply record that supports data serialization |
| class ResourceRecord |
| { |
| public: |
| static constexpr uint32_t kDefaultTtl = 120; // 2 minutes |
| |
| virtual ~ResourceRecord() {} |
| |
| ResourceRecord & operator=(const ResourceRecord & other) = default; |
| |
| const FullQName & GetName() const { return mQName; } |
| QClass GetClass() const { return mCacheFlush ? QClass::IN_FLUSH : QClass::IN; } |
| QType GetType() const { return mType; } |
| |
| uint32_t GetTtl() const { return mTtl; } |
| ResourceRecord & SetTtl(uint32_t ttl) |
| { |
| mTtl = ttl; |
| return *this; |
| } |
| |
| ResourceRecord & SetCacheFlush(bool set) |
| { |
| mCacheFlush = set; |
| return *this; |
| } |
| bool GetCacheFlush() const { return mCacheFlush; } |
| |
| /// Append the given record to the underlying output. |
| /// Updates header item count on success, does NOT update header on failure. |
| bool Append(HeaderRef & hdr, ResourceType asType, RecordWriter & out) const; |
| |
| protected: |
| /// Output the data portion of the resource record. |
| virtual bool WriteData(RecordWriter & out) const = 0; |
| |
| ResourceRecord(QType type, FullQName name) : mType(type), mQName(name) {} |
| |
| private: |
| QType mType; |
| uint32_t mTtl = kDefaultTtl; |
| FullQName mQName; |
| bool mCacheFlush = false; |
| }; |
| |
| } // namespace Minimal |
| } // namespace mdns |