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777 lines
27 KiB
Rust
777 lines
27 KiB
Rust
#![allow(clippy::assertions_on_constants)]
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#![allow(clippy::type_complexity)]
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#![allow(clippy::cognitive_complexity)]
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#![allow(clippy::upper_case_acronyms)]
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#![allow(clippy::unnecessary_wraps)]
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#![allow(clippy::field_reassign_with_default)]
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#![allow(dead_code)]
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#[global_allocator]
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static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
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#[macro_use]
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extern crate clap;
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#[macro_use]
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extern crate derivative;
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#[macro_use]
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extern crate log;
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#[macro_use]
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extern crate serde_derive;
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#[macro_use]
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extern crate serde_big_array;
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#[cfg(feature = "metrics")]
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#[macro_use]
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extern crate prometheus;
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mod anonymized_dns;
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mod blacklist;
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mod cache;
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mod config;
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mod crypto;
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mod dns;
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mod dnscrypt;
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mod dnscrypt_certs;
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mod errors;
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mod globals;
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#[cfg(feature = "metrics")]
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mod metrics;
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mod resolver;
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#[cfg(feature = "metrics")]
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mod varz;
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use anonymized_dns::*;
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use blacklist::*;
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use cache::*;
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use config::*;
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use crypto::*;
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use dns::*;
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use dnscrypt::*;
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use dnscrypt_certs::*;
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use errors::*;
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use globals::*;
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#[cfg(feature = "metrics")]
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use varz::*;
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use byteorder::{BigEndian, ByteOrder};
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use clap::Arg;
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use clockpro_cache::ClockProCache;
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use dnsstamps::{InformalProperty, WithInformalProperty};
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use futures::join;
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use futures::prelude::*;
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use parking_lot::Mutex;
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use parking_lot::RwLock;
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use privdrop::PrivDrop;
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use rand::prelude::*;
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use siphasher::sip128::SipHasher13;
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use std::collections::vec_deque::VecDeque;
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use std::convert::TryFrom;
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use std::fs::File;
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use std::io::prelude::*;
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use std::net::SocketAddr;
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use std::path::Path;
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use std::sync::atomic::{AtomicU32, Ordering};
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use std::sync::Arc;
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use std::time::Duration;
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use tokio::io::{AsyncReadExt, AsyncWriteExt};
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use tokio::net::{TcpListener, TcpSocket, TcpStream, UdpSocket};
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use tokio::runtime::Handle;
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use tokio::sync::oneshot;
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const TCP_BACKLOG: i32 = 1024;
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#[derive(Debug)]
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pub struct UdpClientCtx {
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net_udp_socket: std::net::UdpSocket,
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client_addr: SocketAddr,
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}
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#[derive(Debug)]
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pub struct TcpClientCtx {
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client_connection: TcpStream,
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}
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#[derive(Debug)]
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pub enum ClientCtx {
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Udp(UdpClientCtx),
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Tcp(TcpClientCtx),
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}
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fn maybe_truncate_response(
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client_ctx: &ClientCtx,
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packet: Vec<u8>,
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response: Vec<u8>,
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original_packet_size: usize,
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) -> Result<Vec<u8>, Error> {
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if let ClientCtx::Udp(_) = client_ctx {
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let encrypted_response_min_len = response.len() + DNSCRYPT_RESPONSE_MIN_OVERHEAD;
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if encrypted_response_min_len > original_packet_size
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|| encrypted_response_min_len > DNSCRYPT_UDP_RESPONSE_MAX_SIZE
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{
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return dns::serve_truncated_response(packet);
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}
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}
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Ok(response)
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}
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pub async fn respond_to_query(client_ctx: ClientCtx, response: Vec<u8>) -> Result<(), Error> {
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match client_ctx {
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ClientCtx::Udp(client_ctx) => {
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let net_udp_socket = client_ctx.net_udp_socket;
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net_udp_socket.send_to(&response, client_ctx.client_addr)?;
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}
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ClientCtx::Tcp(client_ctx) => {
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let response_len = response.len();
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ensure!(
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response_len <= DNSCRYPT_TCP_RESPONSE_MAX_SIZE,
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"Packet too large"
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);
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let mut client_connection = client_ctx.client_connection;
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let mut binlen = [0u8, 0];
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BigEndian::write_u16(&mut binlen[..], response_len as u16);
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client_connection.write_all(&binlen).await?;
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client_connection.write_all(&response).await?;
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client_connection.flush().await?;
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}
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}
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Ok(())
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}
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async fn encrypt_and_respond_to_query(
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globals: Arc<Globals>,
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client_ctx: ClientCtx,
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packet: Vec<u8>,
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response: Vec<u8>,
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original_packet_size: usize,
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shared_key: Option<SharedKey>,
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nonce: Option<[u8; DNSCRYPT_FULL_NONCE_SIZE]>,
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) -> Result<(), Error> {
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ensure!(dns::is_response(&response), "Packet is not a response");
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let max_response_size = match client_ctx {
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ClientCtx::Udp(_) => original_packet_size,
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ClientCtx::Tcp(_) => DNSCRYPT_TCP_RESPONSE_MAX_SIZE,
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};
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let response = match &shared_key {
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None => response,
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Some(shared_key) => dnscrypt::encrypt(
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maybe_truncate_response(&client_ctx, packet, response, original_packet_size)?,
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shared_key,
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nonce.as_ref().unwrap(),
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max_response_size,
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)?,
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};
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globals.varz.client_queries_resolved.inc();
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if dns::rcode_nxdomain(&response) {
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globals.varz.client_queries_rcode_nxdomain.inc();
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}
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respond_to_query(client_ctx, response).await
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}
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async fn handle_client_query(
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globals: Arc<Globals>,
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client_ctx: ClientCtx,
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encrypted_packet: Vec<u8>,
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) -> Result<(), Error> {
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let original_packet_size = encrypted_packet.len();
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ensure!(original_packet_size >= DNS_HEADER_SIZE, "Short packet");
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debug_assert!(DNSCRYPT_QUERY_MIN_OVERHEAD > ANONYMIZED_DNSCRYPT_QUERY_MAGIC.len());
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if globals.anonymized_dns_enabled
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&& original_packet_size >= ANONYMIZED_DNSCRYPT_QUERY_MAGIC.len() + DNS_HEADER_SIZE
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&& encrypted_packet[..ANONYMIZED_DNSCRYPT_QUERY_MAGIC.len()]
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== ANONYMIZED_DNSCRYPT_QUERY_MAGIC
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{
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return handle_anonymized_dns(
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globals,
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client_ctx,
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&encrypted_packet[ANONYMIZED_DNSCRYPT_QUERY_MAGIC.len()..],
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)
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.await;
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}
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if !globals.dnscrypt_enabled {
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return Ok(());
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}
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let mut dnscrypt_encryption_params_set = vec![];
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for params in &**globals.dnscrypt_encryption_params_set.read() {
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dnscrypt_encryption_params_set.push((*params).clone())
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}
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let (shared_key, nonce, mut packet) =
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match dnscrypt::decrypt(&encrypted_packet, &dnscrypt_encryption_params_set) {
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Ok(x) => x,
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Err(_) => {
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let packet = encrypted_packet;
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if let Some(synth_packet) = serve_certificates(
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&packet,
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&globals.provider_name,
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&dnscrypt_encryption_params_set,
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)? {
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return encrypt_and_respond_to_query(
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globals,
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client_ctx,
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packet,
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synth_packet,
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original_packet_size,
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None,
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None,
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)
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.await;
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}
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bail!("Unencrypted query");
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}
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};
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ensure!(packet.len() >= DNS_HEADER_SIZE, "Short packet");
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ensure!(qdcount(&packet) == 1, "No question");
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ensure!(
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!dns::is_response(&packet),
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"Question expected, but got a response instead"
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);
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if let Some(tokens) = &globals.access_control_tokens {
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match query_meta(&mut packet)? {
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None => bail!("No access token"),
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Some(token) => ensure!(tokens.contains(&token), "Access token not found"),
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}
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}
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let response =
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resolver::get_cached_response_or_resolve(&globals, &client_ctx, &mut packet).await?;
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encrypt_and_respond_to_query(
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globals,
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client_ctx,
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packet,
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response,
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original_packet_size,
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Some(shared_key),
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Some(nonce),
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)
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.await
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}
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async fn tls_proxy(
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globals: Arc<Globals>,
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binlen: [u8; 2],
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mut client_connection: TcpStream,
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) -> Result<(), Error> {
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let tls_upstream_addr = match &globals.tls_upstream_addr {
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None => return Ok(()),
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Some(tls_upstream_addr) => tls_upstream_addr,
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};
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let socket = match globals.external_addr {
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Some(x @ SocketAddr::V4(_)) => {
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let socket = TcpSocket::new_v4()?;
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socket.set_reuseaddr(true).ok();
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socket.bind(x)?;
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socket
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}
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Some(x @ SocketAddr::V6(_)) => {
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let socket = TcpSocket::new_v6()?;
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socket.set_reuseaddr(true).ok();
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socket.bind(x)?;
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socket
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}
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None => match tls_upstream_addr {
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SocketAddr::V4(_) => TcpSocket::new_v4()?,
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SocketAddr::V6(_) => TcpSocket::new_v6()?,
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},
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};
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let mut ext_socket = socket.connect(*tls_upstream_addr).await?;
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let (mut erh, mut ewh) = ext_socket.split();
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let (mut rh, mut wh) = client_connection.split();
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ewh.write_all(&binlen).await?;
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let fut_proxy_1 = tokio::io::copy(&mut rh, &mut ewh);
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let fut_proxy_2 = tokio::io::copy(&mut erh, &mut wh);
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match join!(fut_proxy_1, fut_proxy_2) {
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(Ok(_), Ok(_)) => Ok(()),
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_ => bail!("TLS proxy error"),
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}
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}
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async fn tcp_acceptor(globals: Arc<Globals>, tcp_listener: TcpListener) -> Result<(), Error> {
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let runtime_handle = globals.runtime_handle.clone();
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let timeout = globals.tcp_timeout;
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let concurrent_connections = globals.tcp_concurrent_connections.clone();
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let active_connections = globals.tcp_active_connections.clone();
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while let Ok((mut client_connection, _client_addr)) = tcp_listener.accept().await {
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let (tx, rx) = oneshot::channel::<()>();
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{
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let mut active_connections = active_connections.lock();
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if active_connections.len() >= globals.tcp_max_active_connections as _ {
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let tx_oldest = active_connections.pop_back().unwrap();
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let _ = tx_oldest.send(());
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}
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active_connections.push_front(tx);
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}
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let _count = concurrent_connections.fetch_add(1, Ordering::Relaxed);
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#[cfg(feature = "metrics")]
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let varz = globals.varz.clone();
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#[cfg(feature = "metrics")]
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{
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varz.inflight_tcp_queries.set(_count.saturating_add(1) as _);
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varz.client_queries_tcp.inc();
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}
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client_connection.set_nodelay(true)?;
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let globals = globals.clone();
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let concurrent_connections = concurrent_connections.clone();
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let fut = async {
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let mut binlen = [0u8, 0];
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client_connection.read_exact(&mut binlen).await?;
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let packet_len = BigEndian::read_u16(&binlen) as usize;
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if packet_len == 0x1603 {
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return tls_proxy(globals, binlen, client_connection).await;
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}
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ensure!(
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(DNS_HEADER_SIZE..=DNSCRYPT_TCP_QUERY_MAX_SIZE).contains(&packet_len),
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"Unexpected TCP query size"
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);
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let mut packet = vec![0u8; packet_len];
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client_connection.read_exact(&mut packet).await?;
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let client_ctx = ClientCtx::Tcp(TcpClientCtx { client_connection });
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let _ = handle_client_query(globals, client_ctx, packet).await;
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Ok(())
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};
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let fut_abort = rx;
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let fut_all = tokio::time::timeout(timeout, future::select(fut.boxed(), fut_abort));
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runtime_handle.spawn(fut_all.map(move |_| {
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let _count = concurrent_connections.fetch_sub(1, Ordering::Relaxed);
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#[cfg(feature = "metrics")]
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varz.inflight_tcp_queries.set(_count.saturating_sub(1) as _);
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}));
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}
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Ok(())
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}
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#[allow(unreachable_code)]
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async fn udp_acceptor(
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globals: Arc<Globals>,
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net_udp_socket: std::net::UdpSocket,
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) -> Result<(), Error> {
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let runtime_handle = globals.runtime_handle.clone();
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let tokio_udp_socket = UdpSocket::try_from(net_udp_socket.try_clone()?)?;
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let timeout = globals.udp_timeout;
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let concurrent_connections = globals.udp_concurrent_connections.clone();
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let active_connections = globals.udp_active_connections.clone();
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loop {
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let mut packet = vec![0u8; DNSCRYPT_UDP_QUERY_MAX_SIZE];
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let (packet_len, client_addr) = tokio_udp_socket.recv_from(&mut packet).await?;
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if packet_len < DNS_HEADER_SIZE {
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continue;
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}
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let net_udp_socket = net_udp_socket.try_clone()?;
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packet.truncate(packet_len);
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let client_ctx = ClientCtx::Udp(UdpClientCtx {
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net_udp_socket,
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client_addr,
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});
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let (tx, rx) = oneshot::channel::<()>();
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{
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let mut active_connections = active_connections.lock();
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if active_connections.len() >= globals.tcp_max_active_connections as _ {
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let tx_oldest = active_connections.pop_back().unwrap();
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let _ = tx_oldest.send(());
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}
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active_connections.push_front(tx);
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}
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let _count = concurrent_connections.fetch_add(1, Ordering::Relaxed);
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#[cfg(feature = "metrics")]
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let varz = globals.varz.clone();
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#[cfg(feature = "metrics")]
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{
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varz.inflight_udp_queries.set(_count.saturating_add(1) as _);
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varz.client_queries_udp.inc();
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}
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let globals = globals.clone();
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let concurrent_connections = concurrent_connections.clone();
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let fut = handle_client_query(globals, client_ctx, packet);
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let fut_abort = rx;
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let fut_all = tokio::time::timeout(timeout, future::select(fut.boxed(), fut_abort));
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runtime_handle.spawn(fut_all.map(move |_| {
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let _count = concurrent_connections.fetch_sub(1, Ordering::Relaxed);
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#[cfg(feature = "metrics")]
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varz.inflight_udp_queries.set(_count.saturating_sub(1) as _);
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}));
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}
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}
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async fn start(
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globals: Arc<Globals>,
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runtime_handle: Handle,
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listeners: Vec<(std::net::TcpListener, std::net::UdpSocket)>,
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) -> Result<(), Error> {
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for listener in listeners {
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let tcp_listener_str = format!("{:?}", listener.0);
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let tokio_tcp_listener = match TcpListener::from_std(listener.0) {
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Ok(tcp_listener) => tcp_listener,
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Err(e) => bail!("{}/TCP: {}", tcp_listener_str, e),
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};
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runtime_handle.spawn(tcp_acceptor(globals.clone(), tokio_tcp_listener).map(|_| {}));
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runtime_handle.spawn(udp_acceptor(globals.clone(), listener.1).map(|_| {}));
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}
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Ok(())
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}
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|
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fn bind_listeners(
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listen_addrs: &[SocketAddr],
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) -> Result<Vec<(std::net::TcpListener, std::net::UdpSocket)>, Error> {
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let mut sockets = Vec::with_capacity(listen_addrs.len());
|
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for listen_addr in listen_addrs {
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let tcp_listener: std::net::TcpListener = match listen_addr {
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|
SocketAddr::V4(_) => {
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let kindy = socket2::Socket::new(
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socket2::Domain::IPV4,
|
|
socket2::Type::STREAM,
|
|
Some(socket2::Protocol::TCP),
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)?;
|
|
kindy.set_reuse_address(true)?;
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|
kindy.bind(&(*listen_addr).into())?;
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|
kindy.listen(TCP_BACKLOG as _)?;
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|
kindy.into()
|
|
}
|
|
SocketAddr::V6(_) => {
|
|
let kindy = socket2::Socket::new(
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socket2::Domain::IPV6,
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|
socket2::Type::STREAM,
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Some(socket2::Protocol::TCP),
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)?;
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kindy.set_reuse_address(true)?;
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|
kindy.set_only_v6(true)?;
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|
kindy.bind(&(*listen_addr).into())?;
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kindy.listen(TCP_BACKLOG as _)?;
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kindy.into()
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}
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};
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|
tcp_listener.set_nonblocking(true)?;
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let udp_socket: std::net::UdpSocket = match listen_addr {
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|
SocketAddr::V4(_) => {
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let kindy = socket2::Socket::new(
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|
socket2::Domain::IPV4,
|
|
socket2::Type::DGRAM,
|
|
Some(socket2::Protocol::UDP),
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|
)?;
|
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kindy.set_reuse_address(true)?;
|
|
kindy.bind(&(*listen_addr).into())?;
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kindy.into()
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}
|
|
SocketAddr::V6(_) => {
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|
let kindy = socket2::Socket::new(
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socket2::Domain::IPV6,
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|
socket2::Type::DGRAM,
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|
Some(socket2::Protocol::UDP),
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)?;
|
|
kindy.set_reuse_address(true)?;
|
|
kindy.set_only_v6(true)?;
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|
kindy.bind(&(*listen_addr).into())?;
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kindy.into()
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}
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};
|
|
udp_socket.set_nonblocking(true)?;
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|
sockets.push((tcp_listener, udp_socket))
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}
|
|
Ok(sockets)
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}
|
|
|
|
fn privdrop(config: &Config) -> Result<(), Error> {
|
|
let mut pd = PrivDrop::default();
|
|
if let Some(user) = &config.user {
|
|
pd = pd.user(user);
|
|
}
|
|
if let Some(group) = &config.group {
|
|
pd = pd.group(group);
|
|
}
|
|
if let Some(chroot) = &config.chroot {
|
|
if !config.daemonize {
|
|
pd = pd.chroot(chroot);
|
|
}
|
|
}
|
|
if config.user.is_some() || config.group.is_some() || config.chroot.is_some() {
|
|
info!("Dropping privileges");
|
|
pd.apply()?;
|
|
}
|
|
if config.daemonize {
|
|
let mut daemon = daemonize_simple::Daemonize::default();
|
|
daemon.stdout_file = config.log_file.clone();
|
|
daemon.stderr_file = config.log_file.clone();
|
|
daemon.pid_file = config.pid_file.clone();
|
|
if let Some(chroot) = &config.chroot {
|
|
daemon.chdir = Some(chroot.into());
|
|
daemon.chroot = true;
|
|
}
|
|
daemon
|
|
.doit()
|
|
.map_err(|e| anyhow!("Unable to daemonize: [{}]", e))?;
|
|
}
|
|
Ok(())
|
|
}
|
|
|
|
fn main() -> Result<(), Error> {
|
|
env_logger::Builder::from_default_env()
|
|
.write_style(env_logger::WriteStyle::Never)
|
|
.format_module_path(false)
|
|
.format_timestamp(None)
|
|
.filter_level(log::LevelFilter::Info)
|
|
.target(env_logger::Target::Stdout)
|
|
.init();
|
|
|
|
crypto::init()?;
|
|
let time_updater = coarsetime::Updater::new(1000).start()?;
|
|
let matches = app_from_crate!()
|
|
.arg(
|
|
Arg::with_name("config")
|
|
.long("config")
|
|
.short("c")
|
|
.value_name("file")
|
|
.takes_value(true)
|
|
.default_value("encrypted-dns.toml")
|
|
.help("Path to the configuration file"),
|
|
)
|
|
.arg(
|
|
Arg::with_name("import-from-dnscrypt-wrapper")
|
|
.long("import-from-dnscrypt-wrapper")
|
|
.value_name("secret.key file")
|
|
.takes_value(true)
|
|
.help("Path to the dnscrypt-wrapper secret key"),
|
|
)
|
|
.arg(
|
|
Arg::with_name("dry-run")
|
|
.long("dry-run")
|
|
.takes_value(false)
|
|
.help("Only print the connection information and quit"),
|
|
)
|
|
.get_matches();
|
|
|
|
let config_path = matches.value_of("config").unwrap();
|
|
let config = Config::from_path(config_path)?;
|
|
let dnscrypt_enabled = config.dnscrypt.enabled.unwrap_or(true);
|
|
let provider_name = match &config.dnscrypt.provider_name {
|
|
provider_name if provider_name.starts_with("2.dnscrypt-cert.") => provider_name.to_string(),
|
|
provider_name => format!("2.dnscrypt-cert.{}", provider_name),
|
|
};
|
|
let external_addr = config.external_addr.map(|addr| SocketAddr::new(addr, 0));
|
|
|
|
let listen_addrs: Vec<_> = config.listen_addrs.iter().map(|x| x.local).collect();
|
|
let listeners = bind_listeners(&listen_addrs)
|
|
.map_err(|e| {
|
|
error!("Unable to listen to the requested IPs and ports: [{}]", e);
|
|
std::process::exit(1);
|
|
})
|
|
.unwrap();
|
|
privdrop(&config)?;
|
|
|
|
let mut runtime_builder = tokio::runtime::Builder::new_multi_thread();
|
|
runtime_builder.enable_all();
|
|
runtime_builder.thread_name("encrypted-dns-");
|
|
let runtime = runtime_builder.build()?;
|
|
|
|
let key_cache_capacity = config.dnscrypt.key_cache_capacity;
|
|
let cache_capacity = config.cache_capacity;
|
|
let state_file = &config.state_file;
|
|
|
|
if let Some(secret_key_path) = matches.value_of("import-from-dnscrypt-wrapper") {
|
|
let secret_key_path = Path::new(secret_key_path);
|
|
warn!("Importing dnscrypt-wrapper key");
|
|
let mut key = vec![];
|
|
File::open(secret_key_path)?.read_to_end(&mut key)?;
|
|
if key.len() != 64 {
|
|
bail!("Key doesn't have the expected size");
|
|
}
|
|
let mut sign_sk_u8 = [0u8; 64];
|
|
let mut sign_pk_u8 = [0u8; 32];
|
|
sign_sk_u8.copy_from_slice(&key);
|
|
sign_pk_u8.copy_from_slice(&key[32..]);
|
|
let provider_kp = SignKeyPair {
|
|
sk: SignSK::from_bytes(sign_sk_u8),
|
|
pk: SignPK::from_bytes(sign_pk_u8),
|
|
};
|
|
runtime.block_on(
|
|
State::with_key_pair(provider_kp, key_cache_capacity).async_save(state_file),
|
|
)?;
|
|
warn!("Key successfully imported");
|
|
}
|
|
|
|
let (state, state_is_new) = match State::from_file(state_file, key_cache_capacity) {
|
|
Err(_) => {
|
|
warn!("No state file found... creating a new provider key");
|
|
let state = State::new(key_cache_capacity);
|
|
runtime.block_on(state.async_save(state_file))?;
|
|
(state, true)
|
|
}
|
|
Ok(state) => {
|
|
info!(
|
|
"State file [{}] found; using existing provider key",
|
|
state_file.as_os_str().to_string_lossy()
|
|
);
|
|
(state, false)
|
|
}
|
|
};
|
|
let provider_kp = state.provider_kp;
|
|
for listen_addr_s in &config.listen_addrs {
|
|
info!("Public server address: {}", listen_addr_s.external);
|
|
info!("Provider public key: {}", provider_kp.pk.as_string());
|
|
info!("Provider name: {}", provider_name);
|
|
let mut stamp = dnsstamps::DNSCryptBuilder::new(dnsstamps::DNSCryptProvider::new(
|
|
provider_name.clone(),
|
|
provider_kp.pk.as_bytes().to_vec(),
|
|
))
|
|
.with_addr(listen_addr_s.external.to_string());
|
|
if config.dnscrypt.dnssec {
|
|
stamp = stamp.with_informal_property(InformalProperty::DNSSEC);
|
|
}
|
|
if config.dnscrypt.no_filters {
|
|
stamp = stamp.with_informal_property(InformalProperty::NoFilters);
|
|
}
|
|
if config.dnscrypt.no_logs {
|
|
stamp = stamp.with_informal_property(InformalProperty::NoLogs);
|
|
}
|
|
let stamp = stamp.serialize().unwrap();
|
|
info!("DNS Stamp: {}", stamp);
|
|
|
|
if let Some(anonymized_dns) = &config.anonymized_dns {
|
|
if anonymized_dns.enabled {
|
|
let relay_stamp = dnsstamps::DNSCryptRelayBuilder::new()
|
|
.with_addr(listen_addr_s.external.to_string())
|
|
.serialize()
|
|
.unwrap();
|
|
info!("DNS Stamp for Anonymized DNS relaying: {}", relay_stamp);
|
|
}
|
|
}
|
|
}
|
|
if matches.is_present("dry-run") {
|
|
return Ok(());
|
|
}
|
|
let dnscrypt_encryption_params_set = state
|
|
.dnscrypt_encryption_params_set
|
|
.into_iter()
|
|
.map(Arc::new)
|
|
.collect::<Vec<_>>();
|
|
|
|
let (sh_k0, sh_k1) = rand::thread_rng().gen();
|
|
let hasher = SipHasher13::new_with_keys(sh_k0, sh_k1);
|
|
|
|
let cache = Cache::new(
|
|
ClockProCache::new(cache_capacity)
|
|
.map_err(|e| anyhow!("Unable to create the DNS cache: [{}]", e))?,
|
|
config.cache_ttl_min,
|
|
config.cache_ttl_max,
|
|
config.cache_ttl_error,
|
|
);
|
|
let cert_cache = Cache::new(
|
|
ClockProCache::new(RELAYED_CERT_CACHE_SIZE)
|
|
.map_err(|e| anyhow!("Unable to create the relay cert cache: [{}]", e))?,
|
|
RELAYED_CERT_CACHE_TTL,
|
|
RELAYED_CERT_CACHE_TTL,
|
|
RELAYED_CERT_CACHE_TTL,
|
|
);
|
|
let blacklist = match config.filtering.domain_blacklist {
|
|
None => None,
|
|
Some(path) => Some(
|
|
BlackList::load(&path)
|
|
.map_err(|e| anyhow!("Unable to load the blacklist [{:?}]: [{}]", path, e))?,
|
|
),
|
|
};
|
|
let undelegated_list = match config.filtering.undelegated_list {
|
|
None => None,
|
|
Some(path) => Some(BlackList::load(&path).map_err(|e| {
|
|
anyhow!(
|
|
"Unable to load the list of undelegated TLDs [{:?}]: [{}]",
|
|
path,
|
|
e
|
|
)
|
|
})?),
|
|
};
|
|
let ignore_unqualified_hostnames = config
|
|
.filtering
|
|
.ignore_unqualified_hostnames
|
|
.unwrap_or(true);
|
|
let (
|
|
anonymized_dns_enabled,
|
|
anonymized_dns_allowed_ports,
|
|
anonymized_dns_allow_non_reserved_ports,
|
|
anonymized_dns_blacklisted_ips,
|
|
) = match config.anonymized_dns {
|
|
None => (false, vec![], false, vec![]),
|
|
Some(anonymized_dns) => (
|
|
anonymized_dns.enabled,
|
|
anonymized_dns.allowed_ports,
|
|
anonymized_dns.allow_non_reserved_ports.unwrap_or(false),
|
|
anonymized_dns.blacklisted_ips,
|
|
),
|
|
};
|
|
let access_control_tokens = match config.access_control {
|
|
Some(access_control) if access_control.enabled && !access_control.tokens.is_empty() => {
|
|
info!("Access control enabled");
|
|
Some(access_control.tokens)
|
|
}
|
|
_ => None,
|
|
};
|
|
let runtime_handle = runtime.handle();
|
|
let globals = Arc::new(Globals {
|
|
runtime_handle: runtime_handle.clone(),
|
|
state_file: state_file.to_path_buf(),
|
|
dnscrypt_encryption_params_set: Arc::new(RwLock::new(Arc::new(
|
|
dnscrypt_encryption_params_set,
|
|
))),
|
|
provider_name,
|
|
provider_kp,
|
|
listen_addrs,
|
|
upstream_addr: config.upstream_addr,
|
|
tls_upstream_addr: config.tls.upstream_addr,
|
|
external_addr,
|
|
tcp_timeout: Duration::from_secs(u64::from(config.tcp_timeout)),
|
|
udp_timeout: Duration::from_secs(u64::from(config.udp_timeout)),
|
|
udp_concurrent_connections: Arc::new(AtomicU32::new(0)),
|
|
tcp_concurrent_connections: Arc::new(AtomicU32::new(0)),
|
|
udp_max_active_connections: config.udp_max_active_connections,
|
|
tcp_max_active_connections: config.tcp_max_active_connections,
|
|
udp_active_connections: Arc::new(Mutex::new(VecDeque::with_capacity(
|
|
config.udp_max_active_connections as _,
|
|
))),
|
|
tcp_active_connections: Arc::new(Mutex::new(VecDeque::with_capacity(
|
|
config.tcp_max_active_connections as _,
|
|
))),
|
|
key_cache_capacity,
|
|
hasher,
|
|
cache,
|
|
cert_cache,
|
|
blacklist,
|
|
undelegated_list,
|
|
ignore_unqualified_hostnames,
|
|
dnscrypt_enabled,
|
|
anonymized_dns_enabled,
|
|
anonymized_dns_allowed_ports,
|
|
anonymized_dns_allow_non_reserved_ports,
|
|
anonymized_dns_blacklisted_ips,
|
|
access_control_tokens,
|
|
my_ip: config.my_ip.map(|ip| ip.as_bytes().to_ascii_lowercase()),
|
|
client_ttl_holdon: config.client_ttl_holdon.unwrap_or(60),
|
|
#[cfg(feature = "metrics")]
|
|
varz: Varz::default(),
|
|
});
|
|
let updater = DNSCryptEncryptionParamsUpdater::new(globals.clone());
|
|
if !state_is_new {
|
|
updater.update();
|
|
}
|
|
#[cfg(feature = "metrics")]
|
|
{
|
|
if let Some(metrics_config) = config.metrics {
|
|
runtime_handle.spawn(
|
|
metrics::prometheus_service(
|
|
globals.varz.clone(),
|
|
metrics_config,
|
|
runtime_handle.clone(),
|
|
)
|
|
.map_err(|e| {
|
|
error!("Unable to start the metrics service: [{}]", e);
|
|
std::process::exit(1);
|
|
})
|
|
.map(|_| ()),
|
|
);
|
|
}
|
|
}
|
|
runtime_handle.spawn(
|
|
start(globals, runtime_handle.clone(), listeners)
|
|
.map_err(|e| {
|
|
error!("Unable to start the service: [{}]", e);
|
|
std::process::exit(1);
|
|
})
|
|
.map(|_| ()),
|
|
);
|
|
runtime.block_on(updater.run());
|
|
time_updater.stop()?;
|
|
Ok(())
|
|
}
|