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use super::wireguard::Wireguard;
use super::{bind, dummy, tun};
use std::net::IpAddr;
use std::thread;
use std::time::Duration;
use hex;
use rand_chacha::ChaCha8Rng;
use rand_core::{RngCore, SeedableRng};
use x25519_dalek::{PublicKey, StaticSecret};
use pnet::packet::ipv4::MutableIpv4Packet;
use pnet::packet::ipv6::MutableIpv6Packet;
pub fn make_packet_src(size: usize, src: IpAddr, id: u64) -> Vec<u8> {
match src {
IpAddr::V4(_) => make_packet(size, src, "127.0.0.1".parse().unwrap(), id),
IpAddr::V6(_) => make_packet(size, src, "::1".parse().unwrap(), id),
}
}
pub fn make_packet_dst(size: usize, dst: IpAddr, id: u64) -> Vec<u8> {
match dst {
IpAddr::V4(_) => make_packet(size, "127.0.0.1".parse().unwrap(), dst, id),
IpAddr::V6(_) => make_packet(size, "::1".parse().unwrap(), dst, id),
}
}
pub fn make_packet(size: usize, src: IpAddr, dst: IpAddr, id: u64) -> Vec<u8> {
// expand pseudo random payload
let mut rng: _ = ChaCha8Rng::seed_from_u64(id);
let mut p: Vec<u8> = vec![0; size];
rng.fill_bytes(&mut p[..]);
// create "IP packet"
let mut msg = Vec::with_capacity(size);
msg.resize(size, 0);
match dst {
IpAddr::V4(dst) => {
let length = size - MutableIpv4Packet::minimum_packet_size();
let mut packet = MutableIpv4Packet::new(&mut msg[..]).unwrap();
packet.set_destination(dst);
packet.set_total_length(size as u16);
packet.set_source(if let IpAddr::V4(src) = src {
src
} else {
panic!("src.version != dst.version")
});
packet.set_payload(&p[..length]);
packet.set_version(4);
}
IpAddr::V6(dst) => {
let length = size - MutableIpv6Packet::minimum_packet_size();
let mut packet = MutableIpv6Packet::new(&mut msg[..]).unwrap();
packet.set_destination(dst);
packet.set_payload_length(length as u16);
packet.set_source(if let IpAddr::V6(src) = src {
src
} else {
panic!("src.version != dst.version")
});
packet.set_payload(&p[..length]);
packet.set_version(6);
}
}
msg
}
fn init() {
let _ = env_logger::builder().is_test(true).try_init();
}
fn wait() {
thread::sleep(Duration::from_millis(500));
}
/* Create and configure two matching pure instances of WireGuard
*/
#[test]
fn test_pure_wireguard() {
init();
// create WG instances for dummy TUN devices
let (fake1, tun_reader1, tun_writer1, mtu1) = dummy::TunTest::create(1500, true);
let wg1: Wireguard<dummy::TunTest, dummy::PairBind> =
Wireguard::new(vec![tun_reader1], tun_writer1, mtu1);
let (fake2, tun_reader2, tun_writer2, mtu2) = dummy::TunTest::create(1500, true);
let wg2: Wireguard<dummy::TunTest, dummy::PairBind> =
Wireguard::new(vec![tun_reader2], tun_writer2, mtu2);
// create pair bind to connect the interfaces "over the internet"
let ((bind_reader1, bind_writer1), (bind_reader2, bind_writer2)) = dummy::PairBind::pair();
wg1.set_writer(bind_writer1);
wg2.set_writer(bind_writer2);
wg1.add_reader(bind_reader1);
wg2.add_reader(bind_reader2);
// generate (public, pivate) key pairs
let sk1 = StaticSecret::from([
0x3f, 0x69, 0x86, 0xd1, 0xc0, 0xec, 0x25, 0xa0, 0x9c, 0x8e, 0x56, 0xb5, 0x1d, 0xb7, 0x3c,
0xed, 0x56, 0x8e, 0x59, 0x9d, 0xd9, 0xc3, 0x98, 0x67, 0x74, 0x69, 0x90, 0xc3, 0x43, 0x36,
0x78, 0x89,
]);
let sk2 = StaticSecret::from([
0xfb, 0xd1, 0xd6, 0xe4, 0x65, 0x06, 0xd2, 0xe5, 0xc5, 0xdf, 0x6e, 0xab, 0x51, 0x71, 0xd8,
0x70, 0xb5, 0xb7, 0x77, 0x51, 0xb4, 0xbe, 0xfb, 0xbc, 0x88, 0x62, 0x40, 0xca, 0x2c, 0xc2,
0x66, 0xe2,
]);
let pk1 = PublicKey::from(&sk1);
let pk2 = PublicKey::from(&sk2);
wg1.new_peer(pk2);
wg2.new_peer(pk1);
wg1.set_key(Some(sk1));
wg2.set_key(Some(sk2));
// configure cryptkey router
let peer2 = wg1.lookup_peer(&pk2).unwrap();
let peer1 = wg2.lookup_peer(&pk1).unwrap();
peer1
.router
.add_allowed_ips("192.168.1.0".parse().unwrap(), 24);
peer2
.router
.add_allowed_ips("192.168.2.0".parse().unwrap(), 24);
// set endpoint (the other should be learned dynamically)
peer2.router.set_endpoint(dummy::UnitEndpoint::new());
let num_packets = 20;
// send IP packets (causing a new handshake)
{
let mut packets: Vec<Vec<u8>> = Vec::with_capacity(num_packets);
for id in 0..num_packets {
packets.push(make_packet(
50 + 50 * id as usize, // size
"192.168.1.20".parse().unwrap(), // src
"192.168.2.10".parse().unwrap(), // dst
id as u64, // prng seed
));
}
let mut backup = packets.clone();
while let Some(p) = packets.pop() {
fake1.write(p);
}
while let Some(p) = backup.pop() {
assert_eq!(
hex::encode(fake2.read()),
hex::encode(p),
"Failed to receive valid IPv4 packet unmodified and in-order"
);
}
}
// send IP packets (other direction)
{
let mut packets: Vec<Vec<u8>> = Vec::with_capacity(num_packets);
for id in 0..num_packets {
packets.push(make_packet(
50 + 50 * id as usize, // size
"192.168.2.10".parse().unwrap(), // src
"192.168.1.20".parse().unwrap(), // dst
(id + 100) as u64, // prng seed
));
}
let mut backup = packets.clone();
while let Some(p) = packets.pop() {
fake2.write(p);
}
while let Some(p) = backup.pop() {
assert_eq!(
hex::encode(fake1.read()),
hex::encode(p),
"Failed to receive valid IPv4 packet unmodified and in-order"
);
}
}
}
|
