use hickory-dns resovler

This commit is contained in:
Toshit Chawda 2024-09-08 20:50:02 -07:00
parent 732679feb9
commit 70ddb2ac21
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GPG key ID: 91480ED99E2B3D9D
5 changed files with 366 additions and 24 deletions

346
Cargo.lock generated
View file

@ -83,7 +83,7 @@ version = "1.1.1"
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@ -992,6 +1082,26 @@ dependencies = [
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@ -1012,6 +1122,24 @@ dependencies = [
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@ -1816,7 +1996,7 @@ dependencies = [
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@ -2028,6 +2223,17 @@ version = "0.9.0"
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@ -2281,6 +2581,16 @@ dependencies = [
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]
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View file

@ -14,6 +14,7 @@ env_logger = "0.11.5"
event-listener = "5.3.1"
fastwebsockets = { version = "0.8.0", features = ["unstable-split", "upgrade"] }
futures-util = "0.3.30"
hickory-resolver = "0.24.1"
http-body-util = "0.1.2"
hyper = { version = "1.4.1", features = ["server", "http1"] }
hyper-util = { version = "0.1.7", features = ["tokio"] }

View file

@ -1,4 +1,4 @@
use std::{collections::HashMap, ops::RangeInclusive, path::PathBuf};
use std::{collections::HashMap, net::IpAddr, ops::RangeInclusive, path::PathBuf};
use cfg_if::cfg_if;
use clap::{Parser, ValueEnum};
@ -11,7 +11,7 @@ use wisp_mux::extensions::{
ProtocolExtensionBuilder,
};
use crate::{CLI, CONFIG};
use crate::{CLI, CONFIG, RESOLVER};
#[derive(Serialize, Deserialize, Default, Debug)]
#[serde(rename_all = "lowercase")]
@ -114,6 +114,9 @@ pub struct StreamConfig {
#[cfg(feature = "twisp")]
pub allow_twisp: bool,
/// DNS servers to resolve with. Will default to system configuration.
pub dns_servers: Vec<IpAddr>,
/// Whether or not to allow connections to IP addresses.
pub allow_direct_ip: bool,
/// Whether or not to allow connections to loopback IP addresses.
@ -200,8 +203,12 @@ lazy_static! {
}
pub fn validate_config_cache() {
// constructs regexes
let _ = CONFIG_CACHE.allowed_ports;
// constructs wisp config
CONFIG.wisp.to_opts().unwrap();
// constructs resolver
RESOLVER.clear_cache();
}
impl Default for ServerConfig {
@ -274,6 +281,8 @@ impl Default for StreamConfig {
#[cfg(feature = "twisp")]
allow_twisp: false,
dns_servers: Vec::new(),
allow_direct_ip: true,
allow_loopback: true,
allow_multicast: true,

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@ -6,6 +6,10 @@ use clap::Parser;
use config::{validate_config_cache, Cli, Config};
use dashmap::DashMap;
use handle::{handle_wisp, handle_wsproxy};
use hickory_resolver::{
config::{NameServerConfigGroup, ResolverConfig, ResolverOpts},
TokioAsyncResolver,
};
use lazy_static::lazy_static;
use listener::ServerListener;
use log::{error, info};
@ -32,6 +36,22 @@ lazy_static! {
}
};
pub static ref CLIENTS: DashMap<String, Client> = DashMap::new();
pub static ref RESOLVER: TokioAsyncResolver = {
let (config, opts) = if CONFIG.stream.dns_servers.is_empty() {
hickory_resolver::system_conf::read_system_conf().unwrap()
} else {
(
ResolverConfig::from_parts(
None,
Vec::new(),
NameServerConfigGroup::from_ips_clear(&CONFIG.stream.dns_servers, 53, true),
),
ResolverOpts::default(),
)
};
TokioAsyncResolver::tokio(config, opts)
};
}
fn format_stream_type(stream_type: StreamType) -> &'static str {

View file

@ -10,10 +10,10 @@ use fastwebsockets::{FragmentCollector, Frame, OpCode, Payload, WebSocketError};
use hyper::upgrade::Upgraded;
use hyper_util::rt::TokioIo;
use regex::RegexSet;
use tokio::net::{lookup_host, TcpStream, UdpSocket};
use tokio::net::{TcpStream, UdpSocket};
use wisp_mux::{ConnectPacket, StreamType};
use crate::CONFIG;
use crate::{CONFIG, RESOLVER};
fn match_addr(str: &str, allowed: &RegexSet, blocked: &RegexSet) -> bool {
blocked.is_match(str) && !allowed.is_match(str)
@ -125,13 +125,15 @@ impl ClientStream {
return Ok(ResolvedPacket::Blocked);
}
let packet = lookup_host(packet.destination_hostname + ":0")
let packet = RESOLVER
.lookup_ip(packet.destination_hostname)
.await
.context("failed to resolve hostname")?
.iter()
.filter(|x| CONFIG.server.resolve_ipv6 || x.is_ipv4())
.map(|x| ConnectPacket {
stream_type: packet.stream_type,
destination_hostname: x.ip().to_string(),
destination_hostname: x.to_string(),
destination_port: packet.destination_port,
})
.next();