flex_dns/rdata/
dname.rs

1use crate::{Buffer, DnsMessage, DnsMessageError, MutBuffer};
2use crate::name::DnsName;
3use crate::parse::Parse;
4use crate::rdata::{RData, RDataParse};
5use crate::write::WriteBytes;
6
7/// # Delegation name record
8/// This record is used to delegate a DNS zone to use the given authoritative
9/// name servers.
10#[derive(Copy, Clone, Debug, PartialEq)]
11pub struct DName<'a> {
12    /// The name of the delegated domain.
13    pub name: DnsName<'a>,
14}
15
16impl<'a> RDataParse<'a> for DName<'a> {
17    #[inline]
18    fn parse(rdata: &RData<'a>, i: &mut usize) -> Result<Self, DnsMessageError> {
19        let name = DnsName::parse(rdata.buffer, i)?;
20
21        Ok(Self {
22            name,
23        })
24    }
25}
26
27impl<'a> WriteBytes for DName<'a> {
28    #[inline]
29    fn write<
30        const PTR_STORAGE: usize,
31        const DNS_SECTION: usize,
32        B: MutBuffer + Buffer,
33    >(&self, message: &mut DnsMessage<PTR_STORAGE, DNS_SECTION, B>) -> Result<usize, DnsMessageError> {
34        self.name.write(message)
35    }
36}
37
38#[cfg(test)]
39mod test {
40    use crate::rdata::testutils::parse_write_test;
41
42    use super::*;
43
44    parse_write_test!(
45        17,
46        [
47            0x03, b'w', b'w', b'w',
48            0x07, b'e', b'x', b'a', b'm', b'p', b'l', b'e',
49            0x03, b'c', b'o', b'm',
50            0x00,
51        ],
52        DName {
53            name: unsafe { DnsName::new_unchecked(b"\x03www\x07example\x03com\x00") },
54        },
55    );
56}
flex_dns/rdata/dname.rs

flex_dns/rdata/
dname.rs
