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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "Name.h"
#include <AK/DeprecatedString.h>
#include <AK/Format.h>
#include <AK/Traits.h>
#include <AK/Types.h>
#include <LibIPC/Forward.h>
namespace DNS {
enum class RecordType : u16 {
A = 1,
NS = 2,
CNAME = 5,
SOA = 6,
PTR = 12,
MX = 15,
TXT = 16,
AAAA = 28,
SRV = 33,
};
enum class RecordClass : u16 {
IN = 1
};
#define MDNS_CACHE_FLUSH 0x8000
class Answer {
public:
Answer() = default;
Answer(Name const& name, RecordType type, RecordClass class_code, u32 ttl, DeprecatedString const& record_data, bool mdns_cache_flush);
Name const& name() const { return m_name; }
RecordType type() const { return m_type; }
RecordClass class_code() const { return m_class_code; }
u16 raw_class_code() const { return (u16)m_class_code | (m_mdns_cache_flush ? MDNS_CACHE_FLUSH : 0); }
u32 ttl() const { return m_ttl; }
time_t received_time() const { return m_received_time; }
DeprecatedString const& record_data() const { return m_record_data; }
bool mdns_cache_flush() const { return m_mdns_cache_flush; }
bool has_expired() const;
unsigned hash() const;
bool operator==(Answer const&) const;
private:
Name m_name;
RecordType m_type { 0 };
RecordClass m_class_code { 0 };
u32 m_ttl { 0 };
time_t m_received_time { 0 };
DeprecatedString m_record_data;
bool m_mdns_cache_flush { false };
};
}
template<>
struct AK::Traits<DNS::Answer> : public GenericTraits<DNS::Answer> {
static constexpr bool is_trivial() { return false; }
static unsigned hash(DNS::Answer a) { return a.hash(); }
};
template<>
struct AK::Formatter<DNS::RecordType> : StandardFormatter {
Formatter() = default;
explicit Formatter(StandardFormatter formatter)
: StandardFormatter(formatter)
{
}
ErrorOr<void> format(AK::FormatBuilder&, DNS::RecordType);
};
template<>
struct AK::Formatter<DNS::RecordClass> : StandardFormatter {
Formatter() = default;
explicit Formatter(StandardFormatter formatter)
: StandardFormatter(formatter)
{
}
ErrorOr<void> format(AK::FormatBuilder&, DNS::RecordClass);
};
namespace IPC {
template<>
ErrorOr<void> encode(Encoder&, DNS::Answer const&);
template<>
ErrorOr<DNS::Answer> decode(Decoder&);
}
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