use std::collections::HashMap;
use crate::dns::{name::Label, CharacterString, WireFormat};
use super::RR;
#[derive(Debug, PartialEq, Eq, Hash, Clone)]
pub struct ISDN<'a> {
pub address: CharacterString<'a>,
pub sa: CharacterString<'a>,
}
impl<'a> RR for ISDN<'a> {
const TYPE_CODE: u16 = 20;
}
impl<'a> ISDN<'a> {
pub fn into_owned<'b>(self) -> ISDN<'b> {
ISDN {
address: self.address.into_owned(),
sa: self.sa.into_owned(),
}
}
}
impl<'a> WireFormat<'a> for ISDN<'a> {
fn parse(data: &'a [u8], position: &mut usize) -> crate::Result<Self>
where
Self: Sized,
{
let address = CharacterString::parse(data, position)?;
let sa = CharacterString::parse(data, position)?;
Ok(Self { address, sa })
}
fn write_to<T: std::io::Write>(&self, out: &mut T) -> crate::Result<()> {
self.address.write_to(out)?;
self.sa.write_to(out)
}
fn write_compressed_to<T: std::io::Write + std::io::Seek>(
&'a self,
out: &mut T,
name_refs: &mut HashMap<&'a [Label<'a>], usize>,
) -> crate::Result<()> {
self.address.write_compressed_to(out, name_refs)?;
self.sa.write_compressed_to(out, name_refs)
}
fn len(&self) -> usize {
self.address.len() + self.sa.len()
}
}
#[cfg(test)]
mod tests {
use crate::{rdata::RData, ResourceRecord};
use super::*;
#[test]
fn parse_and_write_isdn() {
let isdn = ISDN {
address: CharacterString::new(b"150862028003217").unwrap(),
sa: CharacterString::new(b"004").unwrap(),
};
let mut data = Vec::new();
assert!(isdn.write_to(&mut data).is_ok());
let isdn = ISDN::parse(&data, &mut 0);
assert!(isdn.is_ok());
let isdn = isdn.unwrap();
assert_eq!(data.len(), isdn.len());
assert_eq!("150862028003217", isdn.address.to_string());
assert_eq!("004", isdn.sa.to_string());
}
#[test]
fn parse_sample() -> Result<(), Box<dyn std::error::Error>> {
let sample_file = std::fs::read("samples/zonefile/ISDN.sample")?;
let sample_rdata = match ResourceRecord::parse(&sample_file, &mut 0)?.rdata {
RData::ISDN(rdata) => rdata,
_ => unreachable!(),
};
assert_eq!(sample_rdata.address, "isdn-address".try_into()?);
assert_eq!(sample_rdata.sa, "subaddress".try_into()?);
Ok(())
}
}