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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Endian.h>
#include <AK/Types.h>
namespace DNS {
class [[gnu::packed]] PacketHeader {
public:
PacketHeader()
: m_recursion_desired(false)
, m_truncated(false)
, m_authoritative_answer(false)
, m_opcode(0)
, m_query_or_response(false)
, m_response_code(0)
, m_checking_disabled(false)
, m_authenticated_data(false)
, m_zero(false)
, m_recursion_available(false)
{
}
u16 id() const { return m_id; }
void set_id(u16 w) { m_id = w; }
bool recursion_desired() const { return m_recursion_desired; }
void set_recursion_desired(bool b) { m_recursion_desired = b; }
bool is_truncated() const { return m_truncated; }
void set_truncated(bool b) { m_truncated = b; }
bool is_authoritative_answer() const { return m_authoritative_answer; }
void set_authoritative_answer(bool b) { m_authoritative_answer = b; }
u8 opcode() const { return m_opcode; }
void set_opcode(u8 b) { m_opcode = b; }
bool is_query() const { return !m_query_or_response; }
bool is_response() const { return m_query_or_response; }
void set_is_query() { m_query_or_response = false; }
void set_is_response() { m_query_or_response = true; }
u8 response_code() const { return m_response_code; }
void set_response_code(u8 b) { m_response_code = b; }
bool checking_disabled() const { return m_checking_disabled; }
void set_checking_disabled(bool b) { m_checking_disabled = b; }
bool is_authenticated_data() const { return m_authenticated_data; }
void set_authenticated_data(bool b) { m_authenticated_data = b; }
bool is_recursion_available() const { return m_recursion_available; }
void set_recursion_available(bool b) { m_recursion_available = b; }
u16 question_count() const { return m_question_count; }
void set_question_count(u16 w) { m_question_count = w; }
u16 answer_count() const { return m_answer_count; }
void set_answer_count(u16 w) { m_answer_count = w; }
u16 authority_count() const { return m_authority_count; }
void set_authority_count(u16 w) { m_authority_count = w; }
u16 additional_count() const { return m_additional_count; }
void set_additional_count(u16 w) { m_additional_count = w; }
void* payload() { return this + 1; }
void const* payload() const { return this + 1; }
private:
NetworkOrdered<u16> m_id;
bool m_recursion_desired : 1;
bool m_truncated : 1;
bool m_authoritative_answer : 1;
u8 m_opcode : 4;
bool m_query_or_response : 1;
u8 m_response_code : 4;
bool m_checking_disabled : 1;
bool m_authenticated_data : 1;
bool m_zero : 1;
bool m_recursion_available : 1;
NetworkOrdered<u16> m_question_count;
NetworkOrdered<u16> m_answer_count;
NetworkOrdered<u16> m_authority_count;
NetworkOrdered<u16> m_additional_count;
};
static_assert(sizeof(PacketHeader) == 12);
}
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