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// Copyright 2019 Benjamin Fry <benjaminfry@me.com>
//
// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
// http://opensource.org/licenses/MIT>, at your option. This file may not be
// copied, modified, or distributed except according to those terms.
//! OPENPGPKEY records for OpenPGP public keys
use std::fmt;
#[cfg(feature = "serde-config")]
use serde::{Deserialize, Serialize};
use crate::error::*;
use crate::serialize::binary::*;
/// [RFC 7929](https://tools.ietf.org/html/rfc7929#section-2.1)
///
/// ```text
/// The RDATA portion of an OPENPGPKEY resource record contains a single
/// value consisting of a Transferable Public Key formatted as specified
/// in [RFC4880].
/// ```
#[cfg_attr(feature = "serde-config", derive(Deserialize, Serialize))]
#[derive(Debug, PartialEq, Eq, Hash, Clone)]
pub struct OPENPGPKEY {
public_key: Vec<u8>,
}
impl OPENPGPKEY {
/// Creates a new OPENPGPKEY record data.
///
/// # Arguments
///
/// * `public_key` - an OpenPGP Transferable Public Key. This will NOT
/// be checked.
pub fn new(public_key: Vec<u8>) -> Self {
Self { public_key }
}
/// The public key. This should be an OpenPGP Transferable Public Key,
/// but this is not guaranteed.
pub fn public_key(&self) -> &[u8] {
&self.public_key
}
}
/// Read the RData from the given decoder.
pub fn read(decoder: &mut BinDecoder<'_>, rdata_length: Restrict<u16>) -> ProtoResult<OPENPGPKEY> {
let rdata_length = rdata_length.map(usize::from).unverified();
let public_key =
decoder.read_vec(rdata_length)?.unverified(/*we do not enforce a specific format*/);
Ok(OPENPGPKEY::new(public_key))
}
/// Write the RData using the given encoder
pub fn emit(encoder: &mut BinEncoder<'_>, openpgpkey: &OPENPGPKEY) -> ProtoResult<()> {
encoder.emit_vec(openpgpkey.public_key())
}
/// Parse the RData from a set of tokens.
///
/// [RFC 7929](https://tools.ietf.org/html/rfc7929#section-2.3)
///
/// ```text
/// 2.3. The OPENPGPKEY RDATA Presentation Format
///
/// The RDATA Presentation Format, as visible in Zone Files [RFC1035],
/// consists of a single OpenPGP Transferable Public Key as defined in
/// Section 11.1 of [RFC4880] encoded in base64 as defined in Section 4
/// of [RFC4648].
/// ```
impl fmt::Display for OPENPGPKEY {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
f.write_str(&data_encoding::BASE64.encode(&self.public_key))
}
}
// TODO test