dns_message_parser/rr/edns/
rfc_6891.rs

1use super::{Cookie, ExtendedDNSErrors, Padding, ECS};
2use std::fmt::{Display, Formatter, Result as FmtResult};
3
4pub const EDNS_DNSSEC_MASK: u8 = 0x80;
5
6try_from_enum_to_integer! {
7    #[repr(u16)]
8    #[derive(Debug, Clone, Copy, PartialEq, Eq)]
9    pub enum EDNSOptionCode {
10        ECS = 0x00008,
11        Cookie = 0x000a,
12        Padding = 0x000c,
13        ExtendedDnsError = 0x000f,
14    }
15}
16
17#[derive(Debug, PartialEq, Clone, Eq, Hash)]
18pub enum EDNSOption {
19    ECS(ECS),
20    Cookie(Cookie),
21    Padding(Padding),
22    ExtendedDNSErrors(ExtendedDNSErrors),
23}
24
25impl Display for EDNSOption {
26    fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult {
27        match self {
28            EDNSOption::ECS(ecs) => ecs.fmt(f),
29            EDNSOption::Cookie(cookie) => cookie.fmt(f),
30            EDNSOption::Padding(padding) => padding.fmt(f),
31            EDNSOption::ExtendedDNSErrors(extended_dns_errors) => extended_dns_errors.fmt(f),
32        }
33    }
34}
35
36#[derive(Debug, PartialEq, Clone, Eq, Hash)]
37pub struct OPT {
38    pub requestor_payload_size: u16,
39    pub extend_rcode: u8,
40    pub version: u8,
41    pub dnssec: bool,
42    pub edns_options: Vec<EDNSOption>,
43}
44
45impl_to_type!(OPT);
46
47impl Display for OPT {
48    fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult {
49        // TODO extend_rcode
50        write!(
51            f,
52            ". OPT {} {} {} {}",
53            self.requestor_payload_size, self.extend_rcode, self.version, self.dnssec,
54        )?;
55        for edns_option in &self.edns_options {
56            write!(f, " {}", edns_option)?;
57        }
58        Ok(())
59    }
60}
dns_message_parser/rr/edns/rfc_6891.rs

dns_message_parser/rr/edns/
rfc_6891.rs
