mirror of https://github.com/dswd/vpncloud.git
99 lines
3.2 KiB
Rust
99 lines
3.2 KiB
Rust
use std::{
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collections::VecDeque,
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io::{self, ErrorKind},
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net::{SocketAddr, SocketAddrV4, SocketAddrV6, UdpSocket},
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os::unix::io::{AsRawFd, RawFd}
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};
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use net2::UdpBuilder;
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pub trait Socket: AsRawFd + Sized {
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fn listen_v4(host: &str, port: u16) -> Result<Self, io::Error>;
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fn listen_v6(host: &str, port: u16) -> Result<Self, io::Error>;
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fn receive(&mut self, buffer: &mut [u8]) -> Result<(usize, SocketAddr), io::Error>;
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fn send(&mut self, data: &[u8], addr: SocketAddr) -> Result<usize, io::Error>;
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fn address(&self) -> Result<SocketAddr, io::Error>;
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}
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impl Socket for UdpSocket {
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fn listen_v4(host: &str, port: u16) -> Result<Self, io::Error> {
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UdpBuilder::new_v4()
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.expect("Failed to obtain ipv4 socket builder")
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.reuse_address(true)
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.expect("Failed to set so_reuseaddr")
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.bind((host, port))
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}
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fn listen_v6(host: &str, port: u16) -> Result<Self, io::Error> {
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UdpBuilder::new_v6()
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.expect("Failed to obtain ipv4 socket builder")
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.only_v6(true)
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.expect("Failed to set only_v6")
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.reuse_address(true)
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.expect("Failed to set so_reuseaddr")
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.bind((host, port))
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}
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fn receive(&mut self, buffer: &mut [u8]) -> Result<(usize, SocketAddr), io::Error> {
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self.recv_from(buffer)
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}
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fn send(&mut self, data: &[u8], addr: SocketAddr) -> Result<usize, io::Error> {
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self.send_to(data, addr)
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}
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fn address(&self) -> Result<SocketAddr, io::Error> {
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self.local_addr()
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}
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}
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pub struct MockSocket {
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address: SocketAddr,
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outbound: VecDeque<(SocketAddr, Vec<u8>)>,
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inbound: VecDeque<(SocketAddr, Vec<u8>)>
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}
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impl MockSocket {
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pub fn new(address: SocketAddr) -> Self {
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Self { address, outbound: VecDeque::new(), inbound: VecDeque::new() }
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}
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pub fn put_inbound(&mut self, from: SocketAddr, data: Vec<u8>) {
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self.inbound.push_back((from, data))
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}
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pub fn pop_outbound(&mut self) -> Option<(SocketAddr, Vec<u8>)> {
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self.outbound.pop_front()
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}
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}
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impl AsRawFd for MockSocket {
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fn as_raw_fd(&self) -> RawFd {
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unimplemented!()
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}
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}
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impl Socket for MockSocket {
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fn listen_v4(host: &str, port: u16) -> Result<Self, io::Error> {
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let ip = try_fail!(host.parse(), "Failed to parse IPv4 address: {}");
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Ok(Self::new(SocketAddr::V4(SocketAddrV4::new(ip, port))))
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}
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fn listen_v6(host: &str, port: u16) -> Result<Self, io::Error> {
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let ip = try_fail!(host.parse(), "Failed to parse IPv6 address: {}");
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Ok(Self::new(SocketAddr::V6(SocketAddrV6::new(ip, port, 0, 0))))
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}
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fn receive(&mut self, buffer: &mut [u8]) -> Result<(usize, SocketAddr), io::Error> {
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if let Some((addr, data)) = self.inbound.pop_front() {
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buffer[0..data.len()].copy_from_slice(&data);
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Ok((data.len(), addr))
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} else {
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Err(io::Error::from(ErrorKind::UnexpectedEof))
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}
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}
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fn send(&mut self, data: &[u8], addr: SocketAddr) -> Result<usize, io::Error> {
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self.outbound.push_back((addr, data.to_owned()));
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Ok(data.len())
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}
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fn address(&self) -> Result<SocketAddr, io::Error> {
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Ok(self.address)
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}
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}
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