flex_dns/rdata/
zonemd.rs

1use crate::{Buffer, DnsMessage, DnsMessageError, MutBuffer};
2use crate::characters::Characters;
3use crate::parse::Parse;
4use crate::rdata::{RData, RDataParse};
5use crate::write::WriteBytes;
6
7/// # Message digest for DNS zone record (ZONEMD)
8/// This record is used to publish a message digest for a DNS zone.
9#[derive(Copy, Clone, Debug, PartialEq)]
10pub struct ZoneMd<'a> {
11    /// algorithm is the algorithm of the digest
12    pub algorithm: u8,
13    /// digest_type is the algorithm used to construct the digest
14    pub digest_type: u8,
15    /// digest is the digest of the zone
16    pub digest: Characters<'a>,
17}
18
19impl<'a> RDataParse<'a> for ZoneMd<'a> {
20    #[inline]
21    fn parse(rdata: &RData<'a>, i: &mut usize) -> Result<Self, DnsMessageError> {
22        let algorithm = u8::parse(rdata, i)?;
23        let digest_type = u8::parse(rdata, i)?;
24        let digest = Characters::parse(rdata, i)?;
25
26        Ok(Self {
27            algorithm,
28            digest_type,
29            digest
30        })
31    }
32}
33
34impl<'a> WriteBytes for ZoneMd<'a> {
35    #[inline]
36    fn write<
37        const PTR_STORAGE: usize,
38        const DNS_SECTION: usize,
39        B: MutBuffer + Buffer,
40    >(&self, message: &mut DnsMessage<PTR_STORAGE, DNS_SECTION, B>) -> Result<usize, DnsMessageError> {
41        let mut bytes = 0;
42
43        bytes += self.algorithm.write(message)?;
44        bytes += self.digest_type.write(message)?;
45        bytes += self.digest.write(message)?;
46
47        Ok(bytes)
48    }
49}
50
51#[cfg(test)]
52mod test {
53    use crate::rdata::testutils::parse_write_test;
54
55    use super::*;
56
57    parse_write_test!(
58        6,
59        [
60            0x0e, // algorithm
61            0x00, // digest_type
62            0x03, // digest length
63            b'w', b'w', b'w', // digest
64        ],
65        ZoneMd {
66            algorithm: 14,
67            digest_type: 0,
68            digest: unsafe { Characters::new_unchecked(b"www") },
69        },
70    );
71}
flex_dns/rdata/zonemd.rs

flex_dns/rdata/
zonemd.rs
