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Xander Bil 2024-05-03 17:46:42 +02:00
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8 changed files with 401 additions and 314 deletions

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[[package]]
name = "version_check"
version = "0.9.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
[[package]] [[package]]
name = "wasi" name = "wasi"
version = "0.11.0+wasi-snapshot-preview1" version = "0.11.0+wasi-snapshot-preview1"
@ -640,17 +822,21 @@ version = "0.52.4"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "32b752e52a2da0ddfbdbcc6fceadfeede4c939ed16d13e648833a61dfb611ed8" checksum = "32b752e52a2da0ddfbdbcc6fceadfeede4c939ed16d13e648833a61dfb611ed8"
[[package]]
name = "zeroize"
version = "1.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "525b4ec142c6b68a2d10f01f7bbf6755599ca3f81ea53b8431b7dd348f5fdb2d"
[[package]] [[package]]
name = "zeusns" name = "zeusns"
version = "0.1.0" version = "0.1.0"
dependencies = [ dependencies = [
"base64 0.22.0",
"diesel", "diesel",
"dotenvy", "dotenvy",
"form_urlencoded", "ed25519-dalek",
"http-body-util", "ring",
"hyper", "sshkeys",
"hyper-util",
"serde",
"serde_json",
"tokio", "tokio",
] ]

View file

@ -7,10 +7,8 @@ edition = "2021"
[dependencies] [dependencies]
diesel = { version = "2.1.4", features = ["sqlite"] } diesel = { version = "2.1.4", features = ["sqlite"] }
dotenvy = "0.15" dotenvy = "0.15"
form_urlencoded = "1.2" tokio = {version = "1.36.0", features = ["macros","rt-multi-thread","net"], default-features = false}
tokio = {version = "1.36.0", features = ["macros","rt-multi-thread"], default-features = false} sshkeys = "0.3.2"
hyper = {version = "1.2.0", features = ["server", "http1"], default-features = false} ring = "0.17.8"
hyper-util = { version = "0.1", features = ["server","http1", "tokio"], default-features = false} base64 = "0.22.0"
http-body-util = "0.1" ed25519-dalek = "2.1.1"
serde_json = {version="^1.0", default-features = false, features=["std"]}
serde = {version="^1.0", features = ["derive"]}

View file

@ -1,120 +0,0 @@
use std::collections::HashMap;
use std::net::SocketAddr;
use http_body_util::{BodyExt, Full};
use hyper::body::{Buf, Bytes};
use hyper::server::conn::http1;
use hyper::service::service_fn;
use hyper::{Method, Request, Response, StatusCode};
use hyper_util::rt::TokioIo;
use serde::Deserialize;
use tokio::net::TcpListener;
use crate::db::models::insert_into_database;
use crate::structs::{Class, RRClass, Type, RR};
type GenericError = Box<dyn std::error::Error + Send + Sync>;
type Result<T> = std::result::Result<T, GenericError>;
type BoxBody = http_body_util::combinators::BoxBody<Bytes, hyper::Error>;
static INTERNAL_SERVER_ERROR: &[u8] = b"Internal Server Error";
static NOTFOUND: &[u8] = b"Not Found";
#[derive(Deserialize)]
struct Record {
name: Vec<String>,
#[serde(rename = "type")]
_type: Type,
ttl: i32,
data: String,
}
async fn create_record(req: Request<hyper::body::Incoming>) -> Result<Response<BoxBody>> {
let whole_body = req.collect().await?.aggregate();
match serde_json::from_reader::<_, Record>(whole_body.reader()) {
Ok(record) => {
let rdata = record
._type
.to_data(&record.data)
.map_err(|e| e.to_string())?;
match insert_into_database(RR {
name: record.name,
_type: record._type,
class: Class::Class(RRClass::IN),
ttl: record.ttl,
rdlength: rdata.len() as u16,
rdata,
})
.await
{
Ok(_) => Ok(Response::builder()
.status(StatusCode::OK)
.body(full("Successfully Created"))?),
Err(e) => {
eprintln!("{}", e.to_string());
Ok(Response::builder()
.status(StatusCode::INTERNAL_SERVER_ERROR)
.body(full(INTERNAL_SERVER_ERROR))?)
}
}
}
Err(e) => Ok(Response::builder()
.status(StatusCode::UNPROCESSABLE_ENTITY)
.body(full(e.to_string()))?),
}
}
async fn get_record(req: Request<hyper::body::Incoming>) -> Result<Response<BoxBody>> {
if let Some(q) = req.uri().query() {
let params = form_urlencoded::parse(q.as_bytes())
.into_owned()
.collect::<HashMap<String, String>>();
if let Some(domain) = params.get("domain_name") {
return Ok(Response::builder()
.status(StatusCode::OK)
.body(full(domain.to_owned()))?);
}
}
Ok(Response::builder()
.status(StatusCode::UNPROCESSABLE_ENTITY)
.body(full("Missing domain_name query parameter"))?)
}
async fn routes(req: Request<hyper::body::Incoming>) -> Result<Response<BoxBody>> {
match (req.method(), req.uri().path()) {
(&Method::POST, "/add") => create_record(req).await,
(&Method::GET, "/get") => get_record(req).await,
_ => Ok(Response::builder()
.status(StatusCode::NOT_FOUND)
.body(full(NOTFOUND))
.unwrap()),
}
}
fn full<T: Into<Bytes>>(chunk: T) -> BoxBody {
Full::new(chunk.into())
.map_err(|never| match never {})
.boxed()
}
pub async fn api_listener_loop(
addr: SocketAddr,
) -> Result<Box<dyn std::error::Error + Send + Sync>> {
let listener = TcpListener::bind(addr).await?;
loop {
let (stream, _) = listener.accept().await?;
let io = TokioIo::new(stream);
tokio::task::spawn(async move {
if let Err(err) = http1::Builder::new()
.serve_connection(io, service_fn(routes))
.await
{
println!("Error serving connection: {:?}", err);
}
});
}
}

39
src/auth.rs Normal file
View file

@ -0,0 +1,39 @@
use std::{
fs::{read_to_string, File},
io::{Read, Write},
};
use base64::prelude::*;
use ring::signature::Ed25519KeyPair;
pub fn verify(user: String, signature: &[u8], message: &[u8]) -> bool {
let str = read_to_string("/home/xander/Desktop/dnsclient/dns.pub").unwrap();
let key_split: Vec<&str> = str.split_ascii_whitespace().collect();
let blob = BASE64_STANDARD.decode(key_split[1]).unwrap();
let mut prev = vec![ 0x30, 0x2a, 0x30,0x05, 0x06,0x03,0x2b,0x65, 0x70, 0x03, 0x21, 0x00];
prev.extend_from_slice(&blob.as_slice()[19..]);
let s = prev.as_slice();
println!("{:#?}", &blob.as_slice()[19..]);
let mut file = File::create("foo.txt").unwrap();
file.write_all(s);
let mut pem = File::open("/home/xander/Desktop/dnsclient/cert.der").unwrap();
let mut pem_buf = Vec::<u8>::new();
pem.read_to_end(&mut pem_buf).unwrap();
let key = Ed25519KeyPair::from_pkcs8_maybe_unchecked(&pem_buf).unwrap();
let mut pem = File::open("/home/xander/Desktop/dnsclient/der").unwrap();
let mut pem_buf = Vec::<u8>::new();
pem.read_to_end(&mut pem_buf).unwrap();
// let rng = rand::SystemRandom::new();
// let mut signature = vec![];
// key.sign(&signature::RSA_PKCS1_SHA256, &rng, MESSAGE, &mut signature);
let k = ring::signature::UnparsedPublicKey::new(&ring::signature::ED25519, &blob.as_slice()[19..]);
println!("{:#?}",k.verify(message, signature.as_ref()));
return false;
}

View file

@ -1,22 +1,21 @@
use std::{error::Error, net::SocketAddr}; use std::{error::Error, net::SocketAddr};
use crate::{api::api_listener_loop, resolver::resolver_listener_loop}; use crate::resolver::resolver_listener_loop;
mod api;
mod db; mod db;
mod errors; mod errors;
mod parser; mod parser;
mod resolver; mod resolver;
mod auth;
mod structs; mod structs;
mod utils; mod utils;
#[tokio::main] #[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> { async fn main() -> Result<(), Box<dyn Error>> {
let api_addr = SocketAddr::from(([127, 0, 0, 1], 3000));
let resolver_add = SocketAddr::from(([127, 0, 0, 1], 8080)); let resolver_add = SocketAddr::from(([127, 0, 0, 1], 8080));
let (_, _) = tokio::join!( let _ = tokio::join!(
resolver_listener_loop(resolver_add), resolver_listener_loop(resolver_add),
api_listener_loop(api_addr)
); );
Ok(()) Ok(())
} }

View file

@ -3,7 +3,7 @@ use std::{mem::size_of, vec};
use crate::{ use crate::{
errors::ParseError, errors::ParseError,
structs::{ structs::{
Class, Header, KeyRData, LabelString, Message, Opcode, OptRR, Question, RRClass, RRType, Class, Header, KeyRData, LabelString, Message, Opcode, Question, RRClass, RRType,
Type, RR, Type, RR,
}, },
}; };
@ -85,27 +85,6 @@ pub trait FromBytes {
Self: Sized; Self: Sized;
} }
pub fn parse_opt_type(bytes: &[u8]) -> Result<Vec<OptRR>> {
let mut pairs: Vec<OptRR> = vec![];
let mut i: usize = 0;
while i + 4 <= bytes.len() {
let length = u16::from_be_bytes(bytes[i + 2..i + 4].try_into().unwrap());
pairs.push(OptRR {
code: u16::from_be_bytes(bytes[i..i + 2].try_into().unwrap()),
length,
rdata: bytes[i + 4..i + 4 + length as usize]
.try_into()
.map_err(|_| ParseError {
object: String::from("Type::OPT"),
message: String::from("Invalid OPT DATA"),
})?,
});
i += 4 + length as usize;
}
Ok(pairs)
}
impl Type { impl Type {
pub fn to_data(&self, text: &String) -> Result<Vec<u8>> { pub fn to_data(&self, text: &String) -> Result<Vec<u8>> {
match self { match self {
@ -180,34 +159,35 @@ impl FromBytes for Header {
impl FromBytes for LabelString { impl FromBytes for LabelString {
fn from_bytes(bytes: &[u8], i: &mut usize) -> Result<Self> { fn from_bytes(bytes: &[u8], i: &mut usize) -> Result<Self> {
let mut qname = vec![]; let mut out = vec![];
// Parse qname labels // Parse qname labels
while bytes[*i] != 0 while bytes[*i] != 0
&& (bytes[*i] & 0b11000000 == 0) && (bytes[*i] & 0b11000000 == 0)
&& bytes[*i] as usize + *i < bytes.len() && bytes[*i] as usize + *i < bytes.len()
{ {
qname.push( out.push(
String::from_utf8(bytes[*i + 1..bytes[*i] as usize + 1 + *i].to_vec()).unwrap(), String::from_utf8(bytes[*i + 1..bytes[*i] as usize + 1 + *i].to_vec()).unwrap(),
); );
*i += bytes[*i] as usize + 1; *i += bytes[*i] as usize + 1;
} }
if bytes[*i] & 0b11000000 != 0 { if bytes[*i] & 0b11000000 != 0 {
let offset = u16::from_be_bytes(bytes[*i..*i + 2].try_into().unwrap()) & 0b00111111; println!("YOOW");
let offset = u16::from_be_bytes(bytes[*i..*i + 2].try_into().unwrap()) & 0b0011111111111111;
if *i <= offset as usize { if *i <= offset as usize {
return Err(ParseError { return Err(ParseError {
object: String::from("Label"), object: String::from("Label"),
message: String::from("Invalid PTR"), message: String::from("Invalid PTR"),
}); });
} else { } else {
qname.extend(LabelString::from_bytes(bytes, &mut (offset as usize))?); out.extend(LabelString::from_bytes(bytes, &mut (offset as usize))?);
*i += 1; *i += 1;
} }
} }
*i += 1; *i += 1;
Ok(qname) Ok(out)
} }
fn to_bytes(name: Self) -> Vec<u8> { fn to_bytes(name: Self) -> Vec<u8> {
@ -307,7 +287,7 @@ impl FromBytes for RR {
result.extend(u16::to_be_bytes(rr._type.into())); result.extend(u16::to_be_bytes(rr._type.into()));
result.extend(u16::to_be_bytes(rr.class.into())); result.extend(u16::to_be_bytes(rr.class.into()));
result.extend(i32::to_be_bytes(rr.ttl.to_owned())); result.extend(i32::to_be_bytes(rr.ttl.to_owned()));
result.extend(u16::to_be_bytes(4 as u16)); result.extend(u16::to_be_bytes(rr.rdata.len() as u16));
result.extend(rr.rdata); result.extend(rr.rdata);
result result
} }
@ -370,14 +350,14 @@ impl FromBytes for Message {
} }
impl FromBytes for KeyRData { impl FromBytes for KeyRData {
fn from_bytes(bytes: &[u8], _: &mut usize) -> Result<Self> { fn from_bytes(bytes: &[u8], i: &mut usize) -> Result<Self> {
if bytes.len() < 18 { if bytes.len() < 18 {
Err(ParseError { Err(ParseError {
object: String::from("KeyRData"), object: String::from("KeyRData"),
message: String::from("invalid rdata"), message: String::from("invalid rdata"),
}) })
} else { } else {
let mut i = 18; *i = 18;
Ok(KeyRData { Ok(KeyRData {
type_covered: u16::from_be_bytes(bytes[0..2].try_into().unwrap()), type_covered: u16::from_be_bytes(bytes[0..2].try_into().unwrap()),
algo: bytes[2], algo: bytes[2],
@ -386,8 +366,8 @@ impl FromBytes for KeyRData {
signature_expiration: u32::from_be_bytes(bytes[8..12].try_into().unwrap()), signature_expiration: u32::from_be_bytes(bytes[8..12].try_into().unwrap()),
signature_inception: u32::from_be_bytes(bytes[12..16].try_into().unwrap()), signature_inception: u32::from_be_bytes(bytes[12..16].try_into().unwrap()),
key_tag: u16::from_be_bytes(bytes[16..18].try_into().unwrap()), key_tag: u16::from_be_bytes(bytes[16..18].try_into().unwrap()),
signer: LabelString::from_bytes(bytes, &mut i)?, signer: LabelString::from_bytes(bytes, i)?,
signature: bytes[i..bytes.len()].to_vec(), signature: bytes[*i..bytes.len()].to_vec(),
}) })
} }
} }

View file

@ -4,6 +4,7 @@ use std::sync::Arc;
use tokio::net::UdpSocket; use tokio::net::UdpSocket;
use crate::auth::verify;
use crate::db::models::{delete_from_database, get_from_database, insert_into_database}; use crate::db::models::{delete_from_database, get_from_database, insert_into_database};
use crate::errors::ParseError; use crate::errors::ParseError;
use crate::parser::FromBytes; use crate::parser::FromBytes;
@ -69,8 +70,14 @@ async fn handle_update(message: Message) -> Message {
// Check Requestor Permission // Check Requestor Permission
for rr in &message.additional { for rr in &message.additional {
if rr._type == Type::Type(RRType::KEY) { if rr._type == Type::Type(RRType::KEY) {
let key = KeyRData::from_bytes(&rr.rdata, &mut 0).unwrap(); let mut data = message.clone();
println!("{:#?}",key); data.header.arcount -= 1;
data.additional = vec![data.additional[0].clone()];
let mut i = 0;
let key = KeyRData::from_bytes(&rr.rdata, &mut i).unwrap();
let mut bytes = rr.rdata[0..i].to_vec();
bytes.extend(Message::to_bytes(data).to_vec());
let _ = verify(String::from("xander"), &key.signature, &bytes.as_slice());
} }
} }
@ -169,6 +176,8 @@ pub async fn resolver_listener_loop(addr: SocketAddr) -> Result<(), Box<dyn Erro
let socket = socket_shared.clone(); let socket = socket_shared.clone();
tokio::spawn(async move { tokio::spawn(async move {
let response = get_response(&data[..len]).await; let response = get_response(&data[..len]).await;
println!("{:?}",Message::to_bytes(Message::from_bytes(&data[..len], &mut 0).unwrap()));
println!("{:?}",&data[..len]);
let _ = socket let _ = socket
.send_to(Message::to_bytes(response).as_slice(), addr) .send_to(Message::to_bytes(response).as_slice(), addr)
.await; .await;

View file

@ -1,14 +1,11 @@
use serde::Deserialize; #[derive(Debug, Clone, PartialEq)]
#[derive(Debug, Clone, Deserialize, PartialEq)]
pub enum Type { pub enum Type {
Type(RRType), Type(RRType),
Other(u16) Other(u16),
} }
#[repr(u16)] #[repr(u16)]
#[derive(Debug, Clone, Deserialize, PartialEq)] #[derive(Debug, Clone, PartialEq)]
pub enum RRType { pub enum RRType {
A = 1, A = 1,
SOA = 6, SOA = 6,
@ -17,11 +14,10 @@ pub enum RRType {
ANY = 255, ANY = 255,
} }
#[derive(Debug, Clone, PartialEq)] #[derive(Debug, Clone, PartialEq)]
pub enum Class { pub enum Class {
Class(RRClass), Class(RRClass),
Other(u16) Other(u16),
} }
#[repr(u16)] #[repr(u16)]
@ -45,17 +41,17 @@ pub enum RCODE {
YXRRSET = 7, YXRRSET = 7,
NXRRSET = 8, NXRRSET = 8,
NOTAUTH = 9, NOTAUTH = 9,
NOTZONE = 10 NOTZONE = 10,
} }
pub enum Opcode { pub enum Opcode {
QUERY = 0, QUERY = 0,
UPDATE = 5 UPDATE = 5,
} }
#[derive(Debug, Clone)] #[derive(Debug, Clone)]
pub struct Question { pub struct Question {
pub qname: Vec<String>, pub qname: LabelString,
pub qtype: Type, // NOTE: should be QTYPE, right now not really needed pub qtype: Type, // NOTE: should be QTYPE, right now not really needed
pub qclass: Class, //NOTE: should be QCLASS, right now not really needed pub qclass: Class, //NOTE: should be QCLASS, right now not really needed
} }
@ -81,7 +77,7 @@ pub struct Message {
#[derive(Debug, Clone)] #[derive(Debug, Clone)]
pub struct RR { pub struct RR {
pub name: Vec<String>, pub name: LabelString,
pub _type: Type, pub _type: Type,
pub class: Class, pub class: Class,
pub ttl: i32, pub ttl: i32,
@ -93,7 +89,7 @@ pub struct RR {
pub struct OptRR { pub struct OptRR {
pub code: u16, pub code: u16,
pub length: u16, pub length: u16,
pub rdata: Vec<u8> pub rdata: Vec<u8>,
} }
pub type LabelString = Vec<String>; pub type LabelString = Vec<String>;
@ -108,5 +104,5 @@ pub struct KeyRData {
pub signature_inception: u32, pub signature_inception: u32,
pub key_tag: u16, pub key_tag: u16,
pub signer: LabelString, pub signer: LabelString,
pub signature: Vec<u8> pub signature: Vec<u8>,
} }