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126 lines
2.9 KiB
C++
126 lines
2.9 KiB
C++
#include "rr.hpp"
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#include "dns.hpp"
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#include "util/formattable.hpp"
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#include <llarp/util/mem.hpp>
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#include <llarp/util/logging.hpp>
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namespace llarp
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{
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namespace dns
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{
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static auto logcat = log::Cat("dns");
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ResourceRecord::ResourceRecord(const ResourceRecord& other)
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: rr_name(other.rr_name)
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, rr_type(other.rr_type)
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, rr_class(other.rr_class)
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, ttl(other.ttl)
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, rData(other.rData)
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{}
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ResourceRecord::ResourceRecord(ResourceRecord&& other)
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: rr_name(std::move(other.rr_name))
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, rr_type(std::move(other.rr_type))
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, rr_class(std::move(other.rr_class))
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, ttl(std::move(other.ttl))
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, rData(std::move(other.rData))
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{}
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ResourceRecord::ResourceRecord(std::string name, RRType_t type, RR_RData_t data)
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: rr_name{std::move(name)}
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, rr_type{type}
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, rr_class{qClassIN}
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, ttl{1}
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, rData{std::move(data)}
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{}
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bool
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ResourceRecord::Encode(llarp_buffer_t* buf) const
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{
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if (not EncodeNameTo(buf, rr_name))
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return false;
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if (!buf->put_uint16(rr_type))
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{
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return false;
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}
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if (!buf->put_uint16(rr_class))
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{
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return false;
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}
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if (!buf->put_uint32(ttl))
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{
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return false;
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}
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if (!EncodeRData(buf, rData))
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{
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return false;
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}
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return true;
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}
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bool
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ResourceRecord::Decode(llarp_buffer_t* buf)
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{
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uint16_t discard;
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if (!buf->read_uint16(discard))
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return false;
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if (!buf->read_uint16(rr_type))
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{
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log::debug(logcat, "failed to decode rr type");
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return false;
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}
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if (!buf->read_uint16(rr_class))
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{
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log::debug(logcat, "failed to decode rr class");
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return false;
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}
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if (!buf->read_uint32(ttl))
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{
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log::debug(logcat, "failed to decode ttl");
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return false;
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}
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if (!DecodeRData(buf, rData))
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{
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log::debug(logcat, "failed to decode rr rdata {}", *this);
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return false;
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}
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return true;
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}
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util::StatusObject
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ResourceRecord::ToJSON() const
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{
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return util::StatusObject{
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{"name", rr_name},
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{"type", rr_type},
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{"class", rr_class},
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{"ttl", ttl},
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{"rdata", std::string{reinterpret_cast<const char*>(rData.data()), rData.size()}}};
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}
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std::string
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ResourceRecord::ToString() const
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{
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return fmt::format(
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"[RR name={} type={} class={} ttl={} rdata-size={}]",
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rr_name,
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rr_type,
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rr_class,
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ttl,
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rData.size());
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}
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bool
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ResourceRecord::HasCNameForTLD(const std::string& tld) const
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{
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if (rr_type != qTypeCNAME)
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return false;
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llarp_buffer_t buf(rData);
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if (auto name = DecodeName(&buf))
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return name->rfind(tld) == name->size() - tld.size() - 1;
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return false;
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}
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} // namespace dns
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} // namespace llarp
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