Domion解析器

以类型系统的使用为重点的DNS解析器，旨在在解析或序列化DNS数据包时提供声明性体验。它允许解析和序列化整个数据包或单个元素，如头部或不同的查询和资源记录。并非所有资源记录都已实现，如果缺少与您的用例相关的某些资源记录，请提交问题。

解析

use dominion_parser::DnsPacket;
const REQ: &'static [u8; 33] = include_bytes!("../assets/dns_request.bin");
fn main() {
    let packet = DnsPacket::try_from(&REQ[..]).unwrap();
    println!("The request was:");
    println!("{:#?}", packet);
}

序列化

use dominion_parser::body::{RecordData, RecordPreamble, ResourceRecord};
use dominion_parser::header::{AuthenticData, QueryResponse, RecursionAvailable};
use dominion_parser::DnsPacket;
const REQ: &'static [u8; 33] = include_bytes!("../assets/dns_request.bin");
fn main() {
    let mut res = DnsPacket::try_from(&REQ[..]).unwrap();
    // Change some flags
    res.header.flags.qr = QueryResponse::Response;
    res.header.flags.ra = RecursionAvailable::Available;
    res.header.flags.ad = AuthenticData::NotAuthentic;
    // Add answer
    let preamble = RecordPreamble {
        name: res.questions[0].name.clone(),
        rrtype: res.questions[0]
            .qtype
            .try_into()
            .expect("QType is not a valid Type"),
        class: res.questions[0].class,
        ttl: 300,
        rdlen: 4,
    };
    let data = RecordData::A("204.74.99.100".parse().unwrap());
    let answer = ResourceRecord { preamble, data };
    res.header.answers = 1;
    res.answers.push(answer);
    let res = Vec::<u8>::from(&res);
    println!("=================== My Response ===================");
    println!("{:?}", res);
}