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WIP
This commit is contained in:
parent
65032b2311
commit
f3976be852
3 changed files with 172 additions and 25 deletions
86
Cargo.lock
generated
86
Cargo.lock
generated
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@ -277,6 +277,15 @@ dependencies = [
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"quick-error",
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]
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[[package]]
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name = "hwaddr"
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version = "0.1.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e414433a9e4338f4e87fa29d0670c883a5e73e7955c45f4a49130c0aa992c85b"
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dependencies = [
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"phf",
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]
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[[package]]
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name = "instant"
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version = "0.1.11"
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@ -367,6 +376,12 @@ dependencies = [
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"cfg-if",
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]
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[[package]]
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name = "managed"
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version = "0.7.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c75de51135344a4f8ed3cfe2720dc27736f7711989703a0b43aadf3753c55577"
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[[package]]
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name = "memchr"
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version = "2.4.1"
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@ -425,7 +440,21 @@ dependencies = [
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"boringtun",
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"clap",
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"log",
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"packet",
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"pretty_env_logger",
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"smoltcp",
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]
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[[package]]
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name = "packet"
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version = "0.1.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c136c7ad0619ed4f88894aecf66ad86c80683e7b5d707996e6a3a7e0e3916944"
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dependencies = [
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"bitflags",
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"byteorder",
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"hwaddr",
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"thiserror",
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]
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[[package]]
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@ -453,6 +482,24 @@ dependencies = [
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"winapi",
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]
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[[package]]
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name = "phf"
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version = "0.8.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3dfb61232e34fcb633f43d12c58f83c1df82962dcdfa565a4e866ffc17dafe12"
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dependencies = [
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"phf_shared",
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]
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[[package]]
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name = "phf_shared"
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version = "0.8.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c00cf8b9eafe68dde5e9eaa2cef8ee84a9336a47d566ec55ca16589633b65af7"
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dependencies = [
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"siphasher",
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]
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[[package]]
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name = "pretty_env_logger"
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version = "0.3.1"
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@ -566,6 +613,12 @@ version = "1.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
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[[package]]
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name = "siphasher"
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version = "0.3.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "533494a8f9b724d33625ab53c6c4800f7cc445895924a8ef649222dcb76e938b"
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[[package]]
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name = "slog"
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version = "2.7.0"
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@ -591,6 +644,19 @@ version = "1.7.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1ecab6c735a6bb4139c0caafd0cc3635748bbb3acf4550e8138122099251f309"
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[[package]]
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name = "smoltcp"
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version = "0.7.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3e4a069bef843d170df47e7c0a8bf8d037f217d9f5b325865acc3e466ffe40d3"
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dependencies = [
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"bitflags",
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"byteorder",
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"libc",
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"log",
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"managed",
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]
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[[package]]
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name = "spin"
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version = "0.5.2"
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@ -643,6 +709,26 @@ dependencies = [
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"unicode-width",
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]
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[[package]]
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name = "thiserror"
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version = "1.0.30"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "854babe52e4df1653706b98fcfc05843010039b406875930a70e4d9644e5c417"
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dependencies = [
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"thiserror-impl",
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]
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[[package]]
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name = "thiserror-impl"
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version = "1.0.30"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "aa32fd3f627f367fe16f893e2597ae3c05020f8bba2666a4e6ea73d377e5714b"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "thread_local"
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version = "1.1.3"
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@ -11,3 +11,5 @@ clap = { version = "2.33", default-features = false, features = ["suggestions"]
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log = "0.4"
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pretty_env_logger = "0.3"
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anyhow = "1"
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smoltcp = "0.7.5"
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packet = "0.1.4"
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109
src/main.rs
109
src/main.rs
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@ -1,7 +1,7 @@
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#[macro_use]
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extern crate log;
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use std::net::{IpAddr, SocketAddr, UdpSocket};
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use std::net::{IpAddr, Ipv4Addr, SocketAddr, UdpSocket};
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use std::sync::atomic::{AtomicBool, Ordering};
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use std::sync::{Arc, Barrier};
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use std::thread;
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@ -12,6 +12,9 @@ use boringtun::crypto::{X25519PublicKey, X25519SecretKey};
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use boringtun::device::peer::Peer;
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use boringtun::noise::{Tunn, TunnResult};
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use clap::{App, Arg};
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use packet::ip::Protocol;
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use packet::Builder;
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use smoltcp::wire::Ipv4Packet;
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use crate::config::Config;
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@ -46,7 +49,8 @@ fn main() -> anyhow::Result<()> {
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let endpoint_addr = config.endpoint_addr;
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let peer_ip = config.source_peer_ip;
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let source_peer_addr = SocketAddr::new(config.source_peer_ip, 1234);
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let destination_addr = config.dest_addr;
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let close = Arc::new(AtomicBool::new(false));
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@ -74,23 +78,15 @@ fn main() -> anyhow::Result<()> {
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}
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};
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debug!("Got packet from endpoint sock: {} bytes", n);
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match peer.decapsulate(None, &recv_buf[..n], &mut send_buf) {
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let data = &recv_buf[..n];
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match peer.decapsulate(None, data, &mut send_buf) {
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TunnResult::WriteToNetwork(packet) => {
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send_mocked_packet(packet, endpoint_sock.clone(), endpoint_addr, peer_ip)
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.unwrap();
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send_packet(packet, endpoint_sock.clone(), endpoint_addr).unwrap();
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loop {
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let mut send_buf = [0u8; MAX_PACKET];
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match peer.decapsulate(None, &[], &mut send_buf) {
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TunnResult::WriteToNetwork(packet) => {
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send_mocked_packet(
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packet,
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endpoint_sock.clone(),
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endpoint_addr,
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peer_ip,
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)
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.unwrap();
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send_packet(packet, endpoint_sock.clone(), endpoint_addr).unwrap();
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}
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_ => {
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break;
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@ -130,14 +126,25 @@ fn main() -> anyhow::Result<()> {
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}
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};
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debug!("Got packet from source sock: {} bytes", n);
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let data = &recv_buf[..n];
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match peer.encapsulate(&recv_buf[..n], &mut send_buf) {
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// TODO: Support TCP
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let ip_packet =
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wrap_data_packet(Protocol::Udp, data, source_peer_addr, destination_addr)
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.expect("Failed to wrap data packet");
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debug!("Crafted IP packet: {:#?}", ip_packet);
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match peer.encapsulate(ip_packet.as_slice(), &mut send_buf) {
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TunnResult::WriteToNetwork(packet) => {
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send_mocked_packet(packet, endpoint_sock.clone(), endpoint_addr, peer_ip)
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.unwrap();
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send_packet(packet, endpoint_sock.clone(), endpoint_addr).unwrap();
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}
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TunnResult::Err(e) => {
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error!("Failed to encapsulate: {:?}", e);
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}
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other => {
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error!("Unexpected TunnResult during encapsulation: {:?}", other);
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}
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_ => {}
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}
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}));
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}
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@ -156,8 +163,7 @@ fn main() -> anyhow::Result<()> {
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let mut send_buf = [0u8; MAX_PACKET];
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match peer.update_timers(&mut send_buf) {
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TunnResult::WriteToNetwork(packet) => {
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send_mocked_packet(packet, endpoint_sock.clone(), endpoint_addr, peer_ip)
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.unwrap();
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send_packet(packet, endpoint_sock.clone(), endpoint_addr).unwrap();
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}
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_ => {}
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}
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@ -178,14 +184,67 @@ fn main() -> anyhow::Result<()> {
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Ok(())
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}
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fn send_mocked_packet(
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// wraps a UDP packet with an IP layer packet with the wanted source & destination addresses
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fn wrap_data_packet(
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proto: Protocol,
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data: &[u8],
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source: SocketAddr,
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destination: SocketAddr,
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) -> anyhow::Result<Vec<u8>> {
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match source {
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SocketAddr::V4(source) => {
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let mut builder = packet::ip::v4::Builder::default();
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builder = builder
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.source(*source.ip())
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.with_context(|| "Failed to set packet source")?;
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builder = builder
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.payload(data)
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.with_context(|| "Failed to set packet payload")?;
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builder = builder
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.protocol(proto)
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.with_context(|| "Failed to set packet protocol")?;
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builder = builder
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.dscp(0)
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.with_context(|| "Failed to set packet dcsp")?;
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builder = builder
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.id(12345)
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.with_context(|| "Failed to set packet ID")?;
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builder = builder
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.ttl(16)
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.with_context(|| "Failed to set packet TTL")?;
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match destination {
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SocketAddr::V4(destination) => {
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builder = builder
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.destination(*destination.ip())
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.with_context(|| "Failed to set packet destination")?;
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}
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SocketAddr::V6(_) => {
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return Err(anyhow::anyhow!(
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"cannot use ipv6 destination with ipv4 source"
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));
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}
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}
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builder
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.build()
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.with_context(|| "Failed to build ipv4 packet")
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}
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SocketAddr::V6(_) => {
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todo!("ipv6 support")
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}
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}
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}
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fn send_packet(
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packet: &[u8],
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endpoint_socket: Arc<UdpSocket>,
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endpoint_addr: SocketAddr,
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peer_addr: IpAddr,
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) -> anyhow::Result<usize> {
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// todo: replace addr with peer_addr
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endpoint_socket
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let size = endpoint_socket
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.send_to(packet, endpoint_addr)
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.with_context(|| "Failed to send mocked packet")
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.with_context(|| "Failed to send packet")?;
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Ok(size)
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}
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