From c7ac7e6eaff862c1ea4f99e0c6ce75e095106d9c Mon Sep 17 00:00:00 2001 From: Andreas Kling Date: Tue, 12 Jan 2021 12:23:01 +0100 Subject: Services: Move to Userland/Services/ --- Userland/Services/LookupServer/DNSPacket.h | 115 +++++++++++++++++++++++++++++ 1 file changed, 115 insertions(+) create mode 100644 Userland/Services/LookupServer/DNSPacket.h (limited to 'Userland/Services/LookupServer/DNSPacket.h') diff --git a/Userland/Services/LookupServer/DNSPacket.h b/Userland/Services/LookupServer/DNSPacket.h new file mode 100644 index 0000000000..1cddc372c7 --- /dev/null +++ b/Userland/Services/LookupServer/DNSPacket.h @@ -0,0 +1,115 @@ +/* + * Copyright (c) 2018-2020, Andreas Kling + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#pragma once + +#include +#include + +class [[gnu::packed]] DNSPacket { +public: + DNSPacket() + : 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; } + const void* payload() const { return this + 1; } + +private: + NetworkOrdered 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 m_question_count; + NetworkOrdered m_answer_count; + NetworkOrdered m_authority_count; + NetworkOrdered m_additional_count; +}; + +static_assert(sizeof(DNSPacket) == 12); -- cgit v1.2.3