50 lines
1.2 KiB
Plaintext
50 lines
1.2 KiB
Plaintext
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use std::net::Ipv4Addr;
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use tun_tap::Mode;
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use crate::ethernet::{EtherType, EthernetFrame, InvalidEtherType, MacAddr};
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pub struct Iface {
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iface: tun_tap::Iface,
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mac: MacAddr,
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ip: Option<Ipv4Addr>,
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}
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impl Iface {
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pub fn new() -> Iface {
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Self {
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iface: tun_tap::Iface::without_packet_info("tap0", Mode::Tap).unwrap(),
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mac: MacAddr::new([0x9A, 0xB1, 0xB5, 0x22, 0x38, 0xAB]),
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ip: None,
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}
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}
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pub fn recv(&self) -> Result<EthernetFrame, InvalidEtherType> {
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let mut frame_buf = [0u8; 2048];
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let frame_len = self.iface.recv(&mut frame_buf).unwrap();
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EthernetFrame::parse(&frame_buf[0..frame_len])
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}
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pub fn mac_to_self(&self, mac: MacAddr) -> bool {
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mac == self.mac || mac.is_broadcast()
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}
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pub fn send(&self, dst: MacAddr, typ: EtherType, data: &[u8]) {
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let frame = EthernetFrame::new(dst, self.mac, typ, data).serialize();
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println!("{}", frame);
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self.iface.send(&frame).unwrap();
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}
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pub fn mac(&self) -> MacAddr {
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self.mac
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}
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pub fn ip(&self) -> Option<Ipv4Addr> {
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self.ip
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}
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pub fn set_ip(&mut self, ip: Ipv4Addr) {
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self.ip = Some(ip);
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}
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}
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