lokinet/llarp/dns/rr.hpp
Jason Rhinelander 9ea82edc07
DNS message parsing fixes and cleanup
Fixes:

- tighten reserved name detection to not match fooloki.loki, but instead
  only match "foo.loki.loki" and "loki.loki" (and similar for reserved
  name "snode.loki").
- IPv6 PTR parsing was completely broken.
- Added tests for the above two issues.

Cleanups:

- Eliminate llarp::dns::Name_t typedef for std::string
- Use optional return instead of bool + output param
- Use string_views; we were doing a *lot* of string substr's during
  parsing, each of which allocates a new string.
- Use fmt instead of stringstream
- Simplify IPv4 PTR parsing
2022-07-20 16:50:38 -03:00

53 lines
1.1 KiB
C++

#pragma once
#include "name.hpp"
#include "serialize.hpp"
#include <llarp/net/net_int.hpp>
#include <memory>
#include <vector>
namespace llarp
{
namespace dns
{
using RRClass_t = uint16_t;
using RRType_t = uint16_t;
using RR_RData_t = std::vector<byte_t>;
using RR_TTL_t = uint32_t;
struct ResourceRecord : public Serialize
{
ResourceRecord() = default;
ResourceRecord(const ResourceRecord& other);
ResourceRecord(ResourceRecord&& other);
explicit ResourceRecord(std::string name, RRType_t type, RR_RData_t rdata);
bool
Encode(llarp_buffer_t* buf) const override;
bool
Decode(llarp_buffer_t* buf) override;
util::StatusObject
ToJSON() const override;
std::string
ToString() const;
bool
HasCNameForTLD(const std::string& tld) const;
std::string rr_name;
RRType_t rr_type;
RRClass_t rr_class;
RR_TTL_t ttl;
RR_RData_t rData;
};
} // namespace dns
} // namespace llarp
template <>
constexpr inline bool llarp::IsToStringFormattable<llarp::dns::ResourceRecord> = true;