mirror of
https://github.com/oxen-io/lokinet.git
synced 2024-11-15 12:13:24 +00:00
9ea82edc07
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
124 lines
2.9 KiB
C++
124 lines
2.9 KiB
C++
#include "rr.hpp"
|
|
#include "dns.hpp"
|
|
#include "util/formattable.hpp"
|
|
#include <llarp/util/mem.hpp>
|
|
#include <llarp/util/logging.hpp>
|
|
|
|
namespace llarp
|
|
{
|
|
namespace dns
|
|
{
|
|
ResourceRecord::ResourceRecord(const ResourceRecord& other)
|
|
: rr_name(other.rr_name)
|
|
, rr_type(other.rr_type)
|
|
, rr_class(other.rr_class)
|
|
, ttl(other.ttl)
|
|
, rData(other.rData)
|
|
{}
|
|
|
|
ResourceRecord::ResourceRecord(ResourceRecord&& other)
|
|
: rr_name(std::move(other.rr_name))
|
|
, rr_type(std::move(other.rr_type))
|
|
, rr_class(std::move(other.rr_class))
|
|
, ttl(std::move(other.ttl))
|
|
, rData(std::move(other.rData))
|
|
{}
|
|
|
|
ResourceRecord::ResourceRecord(std::string name, RRType_t type, RR_RData_t data)
|
|
: rr_name{std::move(name)}
|
|
, rr_type{type}
|
|
, rr_class{qClassIN}
|
|
, ttl{1}
|
|
, rData{std::move(data)}
|
|
{}
|
|
|
|
bool
|
|
ResourceRecord::Encode(llarp_buffer_t* buf) const
|
|
{
|
|
if (not EncodeNameTo(buf, rr_name))
|
|
return false;
|
|
if (!buf->put_uint16(rr_type))
|
|
{
|
|
return false;
|
|
}
|
|
if (!buf->put_uint16(rr_class))
|
|
{
|
|
return false;
|
|
}
|
|
if (!buf->put_uint32(ttl))
|
|
{
|
|
return false;
|
|
}
|
|
if (!EncodeRData(buf, rData))
|
|
{
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ResourceRecord::Decode(llarp_buffer_t* buf)
|
|
{
|
|
uint16_t discard;
|
|
if (!buf->read_uint16(discard))
|
|
return false;
|
|
if (!buf->read_uint16(rr_type))
|
|
{
|
|
llarp::LogDebug("failed to decode rr type");
|
|
return false;
|
|
}
|
|
if (!buf->read_uint16(rr_class))
|
|
{
|
|
llarp::LogDebug("failed to decode rr class");
|
|
return false;
|
|
}
|
|
if (!buf->read_uint32(ttl))
|
|
{
|
|
llarp::LogDebug("failed to decode ttl");
|
|
return false;
|
|
}
|
|
if (!DecodeRData(buf, rData))
|
|
{
|
|
llarp::LogDebug("failed to decode rr rdata ", *this);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
util::StatusObject
|
|
ResourceRecord::ToJSON() const
|
|
{
|
|
return util::StatusObject{
|
|
{"name", rr_name},
|
|
{"type", rr_type},
|
|
{"class", rr_class},
|
|
{"ttl", ttl},
|
|
{"rdata", std::string{reinterpret_cast<const char*>(rData.data()), rData.size()}}};
|
|
}
|
|
|
|
std::string
|
|
ResourceRecord::ToString() const
|
|
{
|
|
return fmt::format(
|
|
"[RR name={} type={} class={} ttl={} rdata-size={}]",
|
|
rr_name,
|
|
rr_type,
|
|
rr_class,
|
|
ttl,
|
|
rData.size());
|
|
}
|
|
|
|
bool
|
|
ResourceRecord::HasCNameForTLD(const std::string& tld) const
|
|
{
|
|
if (rr_type != qTypeCNAME)
|
|
return false;
|
|
llarp_buffer_t buf(rData);
|
|
if (auto name = DecodeName(&buf))
|
|
return name->rfind(tld) == name->size() - tld.size() - 1;
|
|
return false;
|
|
}
|
|
|
|
} // namespace dns
|
|
} // namespace llarp
|