134 lines
4.9 KiB
Rust
134 lines
4.9 KiB
Rust
#[macro_use]
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extern crate log;
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extern crate env_logger;
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extern crate smoltcp;
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use std::str;
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use std::env;
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use std::time::Instant;
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use log::{LogLevelFilter, LogRecord};
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use env_logger::{LogBuilder};
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use smoltcp::Error;
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use smoltcp::phy::{Tracer, TapInterface};
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use smoltcp::wire::{EthernetFrame, EthernetAddress, IpAddress, IpEndpoint};
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use smoltcp::wire::PrettyPrinter;
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use smoltcp::iface::{SliceArpCache, EthernetInterface};
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use smoltcp::socket::AsSocket;
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use smoltcp::socket::{UdpSocket, UdpSocketBuffer, UdpPacketBuffer};
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use smoltcp::socket::{TcpSocket, TcpSocketBuffer};
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fn main() {
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let startup_time = Instant::now();
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LogBuilder::new()
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.format(move |record: &LogRecord| {
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let elapsed = Instant::now().duration_since(startup_time);
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if record.target().starts_with("smoltcp::") {
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format!("\x1b[0m[{:6}.{:03}ms] ({}): {}\x1b[0m",
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elapsed.as_secs(), elapsed.subsec_nanos() / 1000000,
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record.target().replace("smoltcp::", ""), record.args())
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} else {
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format!("\x1b[32m[{:6}.{:03}ms] ({}): {}\x1b[0m",
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elapsed.as_secs(), elapsed.subsec_nanos() / 1000000,
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record.target(), record.args())
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}
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})
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.filter(None, LogLevelFilter::Trace)
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.init()
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.unwrap();
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fn trace_writer(printer: PrettyPrinter<EthernetFrame<&[u8]>>) {
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print!("\x1b[37m{}\x1b[0m", printer)
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}
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let ifname = env::args().nth(1).unwrap();
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let device = TapInterface::new(ifname.as_ref()).unwrap();
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let device = Tracer::<_, EthernetFrame<&[u8]>>::new(device, trace_writer);
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let arp_cache = SliceArpCache::new(vec![Default::default(); 8]);
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let endpoint = IpEndpoint::new(IpAddress::default(), 6969);
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let udp_rx_buffer = UdpSocketBuffer::new(vec![UdpPacketBuffer::new(vec![0; 64])]);
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let udp_tx_buffer = UdpSocketBuffer::new(vec![UdpPacketBuffer::new(vec![0; 128])]);
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let udp_socket = UdpSocket::new(endpoint, udp_rx_buffer, udp_tx_buffer);
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let tcp_rx_buffer = TcpSocketBuffer::new(vec![0; 64]);
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let tcp_tx_buffer = TcpSocketBuffer::new(vec![0; 128]);
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let tcp_socket = TcpSocket::new(tcp_rx_buffer, tcp_tx_buffer);
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let hardware_addr = EthernetAddress([0x02, 0x00, 0x00, 0x00, 0x00, 0x01]);
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let protocol_addrs = [IpAddress::v4(192, 168, 69, 1)];
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let sockets = vec![udp_socket, tcp_socket];
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let mut iface = EthernetInterface::new(device, arp_cache,
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hardware_addr, protocol_addrs, sockets);
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let mut tcp_6969_connected = false;
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loop {
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{
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let socket: &mut UdpSocket = iface.sockets()[0].as_socket();
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let client = match socket.recv() {
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Ok((endpoint, data)) => {
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debug!("udp recv data: {:?} from {}",
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str::from_utf8(data.as_ref()).unwrap(), endpoint);
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Some(endpoint)
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}
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Err(Error::Exhausted) => {
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None
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}
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Err(e) => {
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debug!("udp recv error: {}", e);
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None
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}
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};
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if let Some(endpoint) = client {
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let data = b"yo dawg";
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debug!("udp send data: {:?}",
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str::from_utf8(data.as_ref()).unwrap());
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socket.send_slice(endpoint, data).unwrap()
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}
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}
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{
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let socket: &mut TcpSocket = iface.sockets()[1].as_socket();
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if !socket.is_open() {
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socket.listen(endpoint).unwrap()
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}
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if socket.is_connected() && !tcp_6969_connected {
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debug!("tcp connected");
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} else if !socket.is_connected() && tcp_6969_connected {
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debug!("tcp disconnected");
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}
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tcp_6969_connected = socket.is_connected();
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if socket.can_recv() {
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let data = {
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let mut data = socket.recv(128).unwrap().to_owned();
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if data.len() > 0 {
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debug!("tcp recv data: {:?}",
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str::from_utf8(data.as_ref()).unwrap_or("(invalid utf8)"));
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data = data.split(|&b| b == b'\n').collect::<Vec<_>>().concat();
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data.reverse();
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data.extend(b"\n");
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}
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data
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};
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if socket.can_send() && data.len() > 0 {
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debug!("tcp send data: {:?}",
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str::from_utf8(data.as_ref()).unwrap_or("(invalid utf8)"));
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socket.send_slice(&data[..]).unwrap();
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}
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} else if socket.can_send() {
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socket.close();
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debug!("tcp closed")
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}
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}
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match iface.poll() {
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Ok(()) => (),
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Err(e) => debug!("poll error: {}", e)
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}
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}
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}
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