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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sergey Bugaev <bugaevc@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "Answer.h"
#include "Question.h"
#include <AK/Optional.h>
#include <AK/Types.h>
#include <AK/Vector.h>
namespace DNS {
enum class ShouldRandomizeCase {
No = 0,
Yes
};
class Packet {
public:
Packet() = default;
static Optional<Packet> from_raw_packet(u8 const*, size_t);
ByteBuffer to_byte_buffer() const;
bool is_query() const { return !m_query_or_response; }
bool is_response() const { return m_query_or_response; }
bool is_authoritative_answer() const { return m_authoritative_answer; }
bool recursion_desired() const { return m_recursion_desired; }
bool recursion_available() const { return m_recursion_available; }
void set_is_query() { m_query_or_response = false; }
void set_is_response() { m_query_or_response = true; }
void set_authoritative_answer(bool authoritative_answer) { m_authoritative_answer = authoritative_answer; }
void set_recursion_desired(bool recursion_desired) { m_recursion_desired = recursion_desired; }
void set_recursion_available(bool recursion_available) { m_recursion_available = recursion_available; }
u16 id() const { return m_id; }
void set_id(u16 id) { m_id = id; }
Vector<Question> const& questions() const { return m_questions; }
Vector<Answer> const& answers() const { return m_answers; }
u16 question_count() const
{
VERIFY(m_questions.size() <= UINT16_MAX);
return m_questions.size();
}
u16 answer_count() const
{
VERIFY(m_answers.size() <= UINT16_MAX);
return m_answers.size();
}
void add_question(Question const&);
void add_answer(Answer const&);
enum class Code : u8 {
NOERROR = 0,
FORMERR = 1,
SERVFAIL = 2,
NXDOMAIN = 3,
NOTIMP = 4,
REFUSED = 5,
YXDOMAIN = 6,
XRRSET = 7,
NOTAUTH = 8,
NOTZONE = 9,
};
Code code() const { return (Code)m_code; }
void set_code(Code code) { m_code = (u8)code; }
private:
u16 m_id { 0 };
u8 m_code { 0 };
bool m_authoritative_answer { false };
bool m_query_or_response { false };
bool m_recursion_desired { true };
bool m_recursion_available { true };
Vector<Question> m_questions;
Vector<Answer> m_answers;
};
}
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