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Diffstat (limited to 'include/wireframe/l7/mdns.hpp')
| -rw-r--r-- | include/wireframe/l7/mdns.hpp | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/include/wireframe/l7/mdns.hpp b/include/wireframe/l7/mdns.hpp deleted file mode 100644 index 887d811..0000000 --- a/include/wireframe/l7/mdns.hpp +++ /dev/null @@ -1,44 +0,0 @@ -#pragma once - -#include <cstdint> -#include <optional> -#include <span> -#include <string> - -#include "wireframe/l7/dissector.hpp" -#include "wireframe/l7/dns.hpp" - -// mDNS (RFC 6762) reuses DNS's exact wire format - same header layout, -// same question/name encoding - just over a different port (5353, -// usually to/from the multicast address 224.0.0.251) and typically -// with many questions/answers per packet instead of DNS's usual one. -// parse_dns() already only looks at the first question, which is true -// here too; the only real difference worth a label is which protocol -// this traffic actually is, so real-world capture output doesn't read -// "DNS" for traffic that never touched a resolver. -namespace wireframe::net { - -inline constexpr std::uint16_t kMdnsPort = 5353; - -class MdnsDissector : public L7Dissector { -public: - std::uint16_t port() const override { return kMdnsPort; } - - std::optional<std::string> summarize(std::span<const unsigned char> payload) const override { - auto msg = parse_dns(payload); - if (!msg) return std::nullopt; - - // No id= field here unlike DnsDissector's summary: RFC 6762 - // 18.1 has multicast queries send it as zero, so printing it - // would just be "id=0" noise on real traffic. - std::string out = "mDNS "; - out += msg->header.is_response ? "response" : "query"; - if (msg->header.is_response) out += " ancount=" + std::to_string(msg->header.ancount); - if (msg->question) { - out += " " + msg->question->name + " type=" + std::to_string(msg->question->qtype); - } - return out; - } -}; - -} // namespace wireframe::net |