d1711f1cef
While at it, rename the `read_trivial_value` and `write_trivial_value` functions to `read_value` and `write_value` respectively, since we'll add compatibility for non-trivial types down the line.
104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Endian.h>
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#include <AK/Types.h>
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namespace DNS {
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class [[gnu::packed]] PacketHeader {
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public:
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PacketHeader()
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: m_recursion_desired(false)
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, m_truncated(false)
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, m_authoritative_answer(false)
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, m_opcode(0)
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, m_query_or_response(false)
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, m_response_code(0)
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, m_checking_disabled(false)
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, m_authenticated_data(false)
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, m_zero(false)
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, m_recursion_available(false)
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{
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}
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u16 id() const { return m_id; }
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void set_id(u16 w) { m_id = w; }
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bool recursion_desired() const { return m_recursion_desired; }
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void set_recursion_desired(bool b) { m_recursion_desired = b; }
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bool is_truncated() const { return m_truncated; }
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void set_truncated(bool b) { m_truncated = b; }
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bool is_authoritative_answer() const { return m_authoritative_answer; }
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void set_authoritative_answer(bool b) { m_authoritative_answer = b; }
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u8 opcode() const { return m_opcode; }
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void set_opcode(u8 b) { m_opcode = b; }
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bool is_query() const { return !m_query_or_response; }
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bool is_response() const { return m_query_or_response; }
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void set_is_query() { m_query_or_response = false; }
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void set_is_response() { m_query_or_response = true; }
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u8 response_code() const { return m_response_code; }
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void set_response_code(u8 b) { m_response_code = b; }
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bool checking_disabled() const { return m_checking_disabled; }
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void set_checking_disabled(bool b) { m_checking_disabled = b; }
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bool is_authenticated_data() const { return m_authenticated_data; }
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void set_authenticated_data(bool b) { m_authenticated_data = b; }
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bool is_recursion_available() const { return m_recursion_available; }
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void set_recursion_available(bool b) { m_recursion_available = b; }
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u16 question_count() const { return m_question_count; }
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void set_question_count(u16 w) { m_question_count = w; }
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u16 answer_count() const { return m_answer_count; }
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void set_answer_count(u16 w) { m_answer_count = w; }
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u16 authority_count() const { return m_authority_count; }
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void set_authority_count(u16 w) { m_authority_count = w; }
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u16 additional_count() const { return m_additional_count; }
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void set_additional_count(u16 w) { m_additional_count = w; }
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void* payload() { return this + 1; }
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void const* payload() const { return this + 1; }
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private:
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NetworkOrdered<u16> m_id;
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bool m_recursion_desired : 1;
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bool m_truncated : 1;
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bool m_authoritative_answer : 1;
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u8 m_opcode : 4;
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bool m_query_or_response : 1;
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u8 m_response_code : 4;
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bool m_checking_disabled : 1;
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bool m_authenticated_data : 1;
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bool m_zero : 1;
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bool m_recursion_available : 1;
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NetworkOrdered<u16> m_question_count;
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NetworkOrdered<u16> m_answer_count;
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NetworkOrdered<u16> m_authority_count;
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NetworkOrdered<u16> m_additional_count;
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};
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static_assert(sizeof(PacketHeader) == 12);
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}
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template<>
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struct AK::Traits<DNS::PacketHeader> : public AK::GenericTraits<DNS::PacketHeader> {
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static constexpr bool is_trivially_serializable() { return true; }
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};
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