mirror of
https://github.com/oxen-io/lokinet.git
synced 2024-10-31 09:20:21 +00:00
25e338d621
* add srv records in RCs if we have any * add mechanism to add SRV records for plainquic exposed ports * resign and republish rc or introset on srv record changes
105 lines
2.7 KiB
C++
105 lines
2.7 KiB
C++
#pragma once
|
|
|
|
#include "name.hpp"
|
|
#include "serialize.hpp"
|
|
|
|
#include <tuple>
|
|
#include <string_view>
|
|
|
|
#include "llarp/util/status.hpp"
|
|
|
|
namespace llarp::dns
|
|
{
|
|
typedef std::tuple<std::string, uint16_t, uint16_t, uint16_t, std::string> SRVTuple;
|
|
|
|
struct SRVData
|
|
{
|
|
static constexpr size_t TARGET_MAX_SIZE = 200;
|
|
|
|
std::string service_proto; // service and protocol may as well be together
|
|
|
|
uint16_t priority;
|
|
uint16_t weight;
|
|
uint16_t port;
|
|
|
|
// target string for the SRV record to point to
|
|
// options:
|
|
// empty - refer to query name
|
|
// dot - authoritative "no such service available"
|
|
// any other .loki or .snode - target is that .loki or .snode
|
|
std::string target;
|
|
|
|
// do some basic validation on the target string
|
|
// note: this is not a conclusive, regex solution,
|
|
// but rather some sanity/safety checks
|
|
bool
|
|
IsValid() const;
|
|
|
|
SRVTuple
|
|
toTuple() const;
|
|
|
|
/// so we can put SRVData in a std::set
|
|
bool
|
|
operator<(const SRVData& other) const
|
|
{
|
|
return service_proto < other.service_proto or priority < other.priority
|
|
or weight < other.weight or port < other.port or target < other.target;
|
|
}
|
|
|
|
bool
|
|
operator==(const SRVData& other) const
|
|
{
|
|
return service_proto == other.service_proto and priority == other.priority
|
|
and weight == other.weight and port == other.port and target == other.target;
|
|
}
|
|
|
|
bool
|
|
BEncode(llarp_buffer_t*) const;
|
|
|
|
bool
|
|
BDecode(llarp_buffer_t*);
|
|
|
|
util::StatusObject
|
|
ExtractStatus() const;
|
|
|
|
static SRVData
|
|
fromTuple(SRVTuple tuple);
|
|
|
|
/* bind-like formatted string for SRV records in config file
|
|
*
|
|
* format:
|
|
* srv=service.proto priority weight port target
|
|
*
|
|
* exactly one space character between parts.
|
|
*
|
|
* target can be empty, in which case the space after port should
|
|
* be omitted. if this is the case, the target is
|
|
* interpreted as the .loki or .snode of the current context.
|
|
*
|
|
* if target is not empty, it must be either
|
|
* - simply a full stop (dot/period) OR
|
|
* - a name within the .loki or .snode subdomains. a target
|
|
* specified in this manner must not end with a full stop.
|
|
*/
|
|
bool
|
|
fromString(std::string_view srvString);
|
|
};
|
|
|
|
} // namespace llarp::dns
|
|
|
|
namespace std
|
|
{
|
|
template <>
|
|
struct hash<llarp::dns::SRVData>
|
|
{
|
|
size_t
|
|
operator()(const llarp::dns::SRVData& data) const
|
|
{
|
|
const std::hash<std::string> h_str{};
|
|
const std::hash<uint16_t> h_port{};
|
|
return h_str(data.service_proto) ^ (h_str(data.target) << 3) ^ (h_port(data.priority) << 5)
|
|
^ (h_port(data.weight) << 7) ^ (h_port(data.port) << 9);
|
|
}
|
|
};
|
|
} // namespace std
|