Some more code

src/config.rs

@@ -350,6 +350,34 @@ impl Config {
         }
     }
 
+    pub fn is_learning(&self) -> bool {
+        match self.mode {
+            Mode::Normal => {
+                match self.device_type {
+                    Type::Tap => true,
+                    Type::Tun => false
+                }
+            }
+            Mode::Router => false,
+            Mode::Switch => true,
+            Mode::Hub => false
+        }
+    }
+
+    pub fn is_broadcasting(&self) -> bool {
+        match self.mode {
+            Mode::Normal => {
+                match self.device_type {
+                    Type::Tap => true,
+                    Type::Tun => false
+                }
+            }
+            Mode::Router => false,
+            Mode::Switch => true,
+            Mode::Hub => true
+        }
+    }
+
     pub fn call_hook(
         &self, event: &'static str, envs: impl IntoIterator<Item = (&'static str, impl AsRef<OsStr>)>, detach: bool
     ) {

src/device.rs

@@ -2,6 +2,7 @@
 // Copyright (C) 2015-2021  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
+use parking_lot::Mutex;
 use std::{
     cmp,
     collections::VecDeque,
@@ -12,7 +13,8 @@ use std::{
     net::{Ipv4Addr, UdpSocket},
     os::unix::io::{AsRawFd, RawFd},
     str,
-    str::FromStr
+    str::FromStr,
+    sync::Arc
 };
 
 use crate::{crypto, error::Error, util::MsgBuffer};
@@ -75,7 +77,7 @@ impl FromStr for Type {
     }
 }
 
-pub trait Device: AsRawFd {
+pub trait Device: AsRawFd + Clone {
     /// Returns the type of this device
     fn get_type(&self) -> Type;
 
@@ -118,6 +120,16 @@ pub struct TunTapDevice {
 }
 
 
+impl Clone for TunTapDevice {
+    fn clone(&self) -> Self {
+        Self {
+            fd: try_fail!(self.fd.try_clone(), "Failed to clone device: {}"),
+            ifname: self.ifname.clone(),
+            type_: self.type_
+        }
+    }
+}
+
 impl TunTapDevice {
     /// Creates a new tun/tap device
     ///
@@ -300,9 +312,10 @@ impl AsRawFd for TunTapDevice {
 }
 
 
+#[derive(Clone)]
 pub struct MockDevice {
-    inbound: VecDeque<Vec<u8>>,
+    inbound: Arc<Mutex<VecDeque<Vec<u8>>>>,
-    outbound: VecDeque<Vec<u8>>
+    outbound: Arc<Mutex<VecDeque<Vec<u8>>>>
 }
 
 impl MockDevice {
@@ -311,15 +324,15 @@ impl MockDevice {
     }
 
     pub fn put_inbound(&mut self, data: Vec<u8>) {
-        self.inbound.push_back(data)
+        self.inbound.lock().push_back(data)
     }
 
     pub fn pop_outbound(&mut self) -> Option<Vec<u8>> {
-        self.outbound.pop_front()
+        self.outbound.lock().pop_front()
     }
 
     pub fn has_inbound(&self) -> bool {
-        !self.inbound.is_empty()
+        !self.inbound.lock().is_empty()
     }
 }
 
@@ -333,7 +346,7 @@ impl Device for MockDevice {
     }
 
     fn read(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
-        if let Some(data) = self.inbound.pop_front() {
+        if let Some(data) = self.inbound.lock().pop_front() {
             buffer.clear();
             buffer.set_length(data.len());
             buffer.message_mut().copy_from_slice(&data);
@@ -344,7 +357,7 @@ impl Device for MockDevice {
     }
 
     fn write(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
-        self.outbound.push_back(buffer.message().into());
+        self.outbound.lock().push_back(buffer.message().into());
         Ok(())
     }
 
@@ -355,7 +368,10 @@ impl Device for MockDevice {
 
 impl Default for MockDevice {
     fn default() -> Self {
-        Self { outbound: VecDeque::with_capacity(10), inbound: VecDeque::with_capacity(10) }
+        Self {
+            outbound: Arc::new(Mutex::new(VecDeque::with_capacity(10))),
+            inbound: Arc::new(Mutex::new(VecDeque::with_capacity(10)))
+        }
     }
 }
 

src/engine/device_thread.rs

@@ -8,7 +8,8 @@ use crate::{
     messages::MESSAGE_TYPE_DATA,
     net::Socket,
     util::{MsgBuffer, Time, TimeSource},
-    Protocol
+    Protocol,
+    config::Config
 };
 use std::{marker::PhantomData, net::SocketAddr};
 
@@ -28,6 +29,20 @@ pub struct DeviceThread<S: Socket, D: Device, P: Protocol, TS: TimeSource> {
 }
 
 impl<S: Socket, D: Device, P: Protocol, TS: TimeSource> DeviceThread<S, D, P, TS> {
+    pub fn new(config: Config, device: D, socket: S, traffic: SharedTraffic, peer_crypto: SharedPeerCrypto, table: SharedTable<TS>) -> Self {
+        Self {
+            _dummy_ts: PhantomData,
+            _dummy_p: PhantomData,
+            broadcast: config.is_broadcasting(),
+            socket,
+            device,
+            next_housekeep: TS::now(),
+            traffic,
+            peer_crypto,
+            table
+        }
+    }
+
     #[inline]
     fn send_to(&mut self, addr: SocketAddr, msg: &mut MsgBuffer) -> Result<(), Error> {
         debug!("Sending msg with {} bytes to {}", msg.len(), addr);
@@ -104,15 +119,16 @@ impl<S: Socket, D: Device, P: Protocol, TS: TimeSource> DeviceThread<S, D, P, TS
         let mut buffer = MsgBuffer::new(SPACE_BEFORE);
         loop {
             try_fail!(self.device.read(&mut buffer), "Failed to read from device: {}");
+            //TODO: set and handle timeout
             if let Err(e) = self.forward_packet(&mut buffer) {
                 error!("{}", e);
             }
             let now = TS::now();
-            if self.next_housekeep < TS::now() {
+            if self.next_housekeep < now {
                 if let Err(e) = self.housekeep() {
                     error!("{}", e)
                 }
-                self.next_housekeep = TS::now() + 1
+                self.next_housekeep = now + 1
             }
         }
     }

src/engine/mod.rs

@@ -3,8 +3,8 @@
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
 mod device_thread;
-mod socket_thread;
 mod shared;
+mod socket_thread;
 
 use std::{
     cmp::{max, min},
@@ -16,7 +16,8 @@ use std::{
     marker::PhantomData,
     net::{SocketAddr, ToSocketAddrs},
     path::Path,
-    str::FromStr
+    str::FromStr,
+    thread
 };
 
 use fnv::FnvHasher;
@@ -26,8 +27,12 @@ use smallvec::{smallvec, SmallVec};
 use crate::{
     beacon::BeaconSerializer,
     config::{Config, DEFAULT_PEER_TIMEOUT, DEFAULT_PORT},
-    crypto::{is_init_message, Crypto, MessageResult, PeerCrypto, InitState, InitResult},
+    crypto::{is_init_message, Crypto, InitResult, InitState, MessageResult, PeerCrypto},
     device::{Device, Type},
+    engine::{
+        device_thread::DeviceThread,
+        shared::{SharedPeerCrypto, SharedTable, SharedTraffic}
+    },
     error::Error,
     messages::{
         AddrList, NodeInfo, PeerInfo, MESSAGE_TYPE_CLOSE, MESSAGE_TYPE_DATA, MESSAGE_TYPE_KEEPALIVE,
@@ -53,7 +58,7 @@ const SPACE_BEFORE: usize = 100;
 
 struct PeerData {
     addrs: AddrList,
-    #[allow(dead_code)] //TODO: export in status
+    #[allow(dead_code)] // TODO: export in status
     last_seen: Time,
     timeout: Time,
     peer_timeout: u16,
@@ -104,7 +109,9 @@ pub struct GenericCloud<D: Device, P: Protocol, S: Socket, TS: TimeSource> {
 
 impl<D: Device, P: Protocol, S: Socket, TS: TimeSource> GenericCloud<D, P, S, TS> {
     #[allow(clippy::too_many_arguments)]
-    pub fn new(config: &Config, socket: S, device: D, port_forwarding: Option<PortForwarding>, stats_file: Option<File>) -> Self {
+    pub fn new(
+        config: &Config, socket: S, device: D, port_forwarding: Option<PortForwarding>, stats_file: Option<File>
+    ) -> Self {
         let (learning, broadcast) = match config.mode {
             Mode::Normal => {
                 match config.device_type {
@@ -288,8 +295,26 @@ impl<D: Device, P: Protocol, S: Socket, TS: TimeSource> GenericCloud<D, P, S, TS
     }
 
     pub fn run(&mut self) {
+        let table = SharedTable::<TS>::new(&self.config);
+        let traffic = SharedTraffic::new();
+        let peer_crypto = SharedPeerCrypto::new();
+        let device_thread = DeviceThread::<S, D, P, TS>::new(
+            self.config.clone(),
+            self.device.clone(),
+            self.socket.clone(),
+            traffic.clone(),
+            peer_crypto.clone(),
+            table.clone()
+        );
+
+        // TODO: create shared data structures
+        // TODO: create and spawn threads
         let ctrlc = CtrlC::new();
-        let waiter = try_fail!(WaitImpl::new(self.socket.as_raw_fd(), self.device.as_raw_fd(), 1000), "Failed to setup poll: {}");
+        // TODO: wait for ctrl-c
+        let waiter = try_fail!(
+            WaitImpl::new(self.socket.as_raw_fd(), self.device.as_raw_fd(), 1000),
+            "Failed to setup poll: {}"
+        );
         let mut buffer = MsgBuffer::new(SPACE_BEFORE);
         let mut poll_error = false;
         self.config.call_hook("vpn_started", vec![("IFNAME", self.device.ifname())], true);

src/engine/shared.rs

@@ -6,7 +6,9 @@ use crate::{
     table::ClaimTable,
     traffic::{TrafficStats, TrafficEntry},
     types::{Address, NodeId, RangeList},
-    util::MsgBuffer
+    util::MsgBuffer,
+    util::Duration,
+    config::Config
 };
 use parking_lot::Mutex;
 use std::{
@@ -16,11 +18,16 @@ use std::{
     sync::Arc
 };
 
+#[derive(Clone)]
 pub struct SharedPeerCrypto {
     peers: Arc<Mutex<HashMap<SocketAddr, Option<Arc<CryptoCore>>, Hash>>>
 }
 
 impl SharedPeerCrypto {
+    pub fn new() -> Self {
+        SharedPeerCrypto { peers: Arc::new(Mutex::new(HashMap::default())) }
+    }
+
     pub fn sync(&mut self) {
         // TODO sync if needed
     }
@@ -50,11 +57,16 @@ impl SharedPeerCrypto {
 }
 
 
+#[derive(Clone)]
 pub struct SharedTraffic {
     traffic: Arc<Mutex<TrafficStats>>
 }
 
 impl SharedTraffic {
+    pub fn new() -> Self {
+        Self { traffic: Arc::new(Mutex::new(Default::default())) }
+    }
+
     pub fn sync(&mut self) {
         // TODO sync if needed
     }
@@ -105,11 +117,17 @@ impl SharedTraffic {
 }
 
 
+#[derive(Clone)]
 pub struct SharedTable<TS: TimeSource> {
     table: Arc<Mutex<ClaimTable<TS>>>
 }
 
 impl<TS: TimeSource> SharedTable<TS> {
+    pub fn new(config: &Config) -> Self {
+        let table = ClaimTable::new(config.switch_timeout as Duration, config.peer_timeout as Duration);
+        SharedTable { table: Arc::new(Mutex::new(table)) }
+    }
+
     pub fn sync(&mut self) {
         // TODO sync if needed
     }

src/engine/socket_thread.rs

@@ -24,7 +24,7 @@ use std::{
     fmt,
     fs::File,
     io,
-    io::{Write, Cursor, Seek, SeekFrom},
+    io::{Cursor, Seek, SeekFrom, Write},
     marker::PhantomData,
     net::{SocketAddr, ToSocketAddrs}
 };
@@ -615,28 +615,38 @@ impl<S: Socket, D: Device, P: Protocol, TS: TimeSource> SocketThread<S, D, P, TS
     pub fn run(mut self) {
         let mut buffer = MsgBuffer::new(SPACE_BEFORE);
         loop {
-            let src = try_fail!(self.socket.receive(&mut buffer), "Failed to read from network socket: {}");
+            match self.socket.receive(&mut buffer) {
-            match self.handle_message(src, &mut buffer) {
+                Err(err) => {
-                Err(e @ Error::CryptoInitFatal(_)) => {
+                    if err.kind() == io::ErrorKind::TimedOut || err.kind() == io::ErrorKind::WouldBlock {
-                    debug!("Fatal crypto init error from {}: {}", src, e);
+                        // ok, this is a normal timeout
-                    info!("Closing pending connection to {} due to error in crypto init", addr_nice(src));
+                    } else {
-                    self.pending_inits.remove(&src);
+                        fail!("Failed to read from network socket: {}", err);
+                    }
                 }
-                Err(e @ Error::CryptoInit(_)) => {
+                Ok(src) => {
-                    debug!("Recoverable init error from {}: {}", src, e);
+                    match self.handle_message(src, &mut buffer) {
-                    info!("Ignoring invalid init message from peer {}", addr_nice(src));
+                        Err(e @ Error::CryptoInitFatal(_)) => {
+                            debug!("Fatal crypto init error from {}: {}", src, e);
+                            info!("Closing pending connection to {} due to error in crypto init", addr_nice(src));
+                            self.pending_inits.remove(&src);
+                        }
+                        Err(e @ Error::CryptoInit(_)) => {
+                            debug!("Recoverable init error from {}: {}", src, e);
+                            info!("Ignoring invalid init message from peer {}", addr_nice(src));
+                        }
+                        Err(e) => {
+                            error!("{}", e);
+                        }
+                        Ok(_) => {}
+                    }
                 }
-                Err(e) => {
-                    error!("{}", e);
-                }
-                Ok(_) => {}
             }
             let now = TS::now();
             if self.next_housekeep < now {
                 if let Err(e) = self.housekeep() {
                     error!("{}", e)
                 }
-                self.next_housekeep = TS::now() + 1
+                self.next_housekeep = now + 1
             }
         }
     }

src/main.rs

@@ -36,7 +36,7 @@ use structopt::StructOpt;
 use std::{
     fs::{self, File, Permissions},
     io::{self, Write},
-    net::{Ipv4Addr, UdpSocket},
+    net::{Ipv4Addr},
     os::unix::fs::PermissionsExt,
     path::Path,
     process,
@@ -50,7 +50,7 @@ use crate::{
     config::{Args, Command, Config, DEFAULT_PORT},
     crypto::Crypto,
     device::{Device, TunTapDevice, Type},
-    net::Socket,
+    net::{Socket, NetSocket},
     oldconfig::OldConfigFile,
     payload::Protocol,
     util::SystemTimeSource,
@@ -328,7 +328,7 @@ fn main() {
         }
         return        
     }
-    let socket = try_fail!(UdpSocket::listen(&config.listen), "Failed to open socket {}: {}", config.listen);
+    let socket = try_fail!(NetSocket::listen(&config.listen), "Failed to open socket {}: {}", config.listen);
     match config.device_type {
         Type::Tap => run::<payload::Frame, _>(config, socket),
         Type::Tun => run::<payload::Packet, _>(config, socket)

src/net.rs

@@ -2,17 +2,21 @@
 // Copyright (C) 2015-2021  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
+use super::util::{MockTimeSource, MsgBuffer, Time, TimeSource};
+use crate::port_forwarding::PortForwarding;
+use parking_lot::Mutex;
 use std::{
     collections::{HashMap, VecDeque},
     io::{self, ErrorKind},
-    net::{IpAddr, SocketAddr, UdpSocket, Ipv6Addr},
+    net::{IpAddr, Ipv6Addr, SocketAddr, UdpSocket},
     os::unix::io::{AsRawFd, RawFd},
-    sync::atomic::{AtomicBool, Ordering}
+    sync::{
+        atomic::{AtomicBool, Ordering},
+        Arc
+    },
+    time::Duration
 };
 
-use super::util::{MockTimeSource, MsgBuffer, Time, TimeSource};
-use crate::port_forwarding::PortForwarding;
-
 pub fn mapped_addr(addr: SocketAddr) -> SocketAddr {
     // HOT PATH
     match addr {
@@ -27,7 +31,7 @@ pub fn get_ip() -> IpAddr {
     s.local_addr().unwrap().ip()
 }
 
-pub trait Socket: AsRawFd + Sized {
+pub trait Socket: AsRawFd + Sized + Clone {
     fn listen(addr: &str) -> Result<Self, io::Error>;
     fn receive(&mut self, buffer: &mut MsgBuffer) -> Result<SocketAddr, io::Error>;
     fn send(&mut self, data: &[u8], addr: SocketAddr) -> Result<usize, io::Error>;
@@ -47,25 +51,42 @@ pub fn parse_listen(addr: &str) -> SocketAddr {
     }
 }
 
-impl Socket for UdpSocket {
+pub struct NetSocket(UdpSocket);
+
+impl Clone for NetSocket {
+    fn clone(&self) -> Self {
+        Self(try_fail!(self.0.try_clone(), "Failed to clone socket: {}"))
+    }
+}
+
+impl AsRawFd for NetSocket {
+    fn as_raw_fd(&self) -> RawFd {
+        self.0.as_raw_fd()
+    }
+}
+
+impl Socket for NetSocket {
     fn listen(addr: &str) -> Result<Self, io::Error> {
         let addr = parse_listen(addr);
-        UdpSocket::bind(addr)
+        Ok(NetSocket(UdpSocket::bind(addr).and_then(|s| {
+            s.set_read_timeout(Some(Duration::from_secs(1)))?;
+            Ok(s)
+        })?))
     }
 
     fn receive(&mut self, buffer: &mut MsgBuffer) -> Result<SocketAddr, io::Error> {
         buffer.clear();
-        let (size, addr) = self.recv_from(buffer.buffer())?;
+        let (size, addr) = self.0.recv_from(buffer.buffer())?;
         buffer.set_length(size);
         Ok(addr)
     }
 
     fn send(&mut self, data: &[u8], addr: SocketAddr) -> Result<usize, io::Error> {
-        self.send_to(data, addr)
+        self.0.send_to(data, addr)
     }
 
     fn address(&self) -> Result<SocketAddr, io::Error> {
-        let mut addr = self.local_addr()?;
+        let mut addr = self.0.local_addr()?;
         addr.set_ip(get_ip());
         Ok(addr)
     }
@@ -79,22 +100,24 @@ thread_local! {
     static MOCK_SOCKET_NAT: AtomicBool = AtomicBool::new(false);
 }
 
+
+#[derive(Clone)]
 pub struct MockSocket {
     nat: bool,
-    nat_peers: HashMap<SocketAddr, Time>,
+    nat_peers: Arc<Mutex<HashMap<SocketAddr, Time>>>,
     address: SocketAddr,
-    outbound: VecDeque<(SocketAddr, Vec<u8>)>,
+    outbound: Arc<Mutex<VecDeque<(SocketAddr, Vec<u8>)>>>,
-    inbound: VecDeque<(SocketAddr, Vec<u8>)>
+    inbound: Arc<Mutex<VecDeque<(SocketAddr, Vec<u8>)>>>
 }
 
 impl MockSocket {
     pub fn new(address: SocketAddr) -> Self {
         Self {
             nat: Self::get_nat(),
-            nat_peers: HashMap::new(),
+            nat_peers: Default::default(),
             address,
-            outbound: VecDeque::with_capacity(10),
+            outbound: Arc::new(Mutex::new(VecDeque::with_capacity(10))),
-            inbound: VecDeque::with_capacity(10)
+            inbound: Arc::new(Mutex::new(VecDeque::with_capacity(10)))
         }
     }
 
@@ -108,12 +131,12 @@ impl MockSocket {
 
     pub fn put_inbound(&mut self, from: SocketAddr, data: Vec<u8>) -> bool {
         if !self.nat {
-            self.inbound.push_back((from, data));
+            self.inbound.lock().push_back((from, data));
             return true
         }
-        if let Some(timeout) = self.nat_peers.get(&from) {
+        if let Some(timeout) = self.nat_peers.lock().get(&from) {
             if *timeout >= MockTimeSource::now() {
-                self.inbound.push_back((from, data));
+                self.inbound.lock().push_back((from, data));
                 return true
             }
         }
@@ -122,7 +145,7 @@ impl MockSocket {
     }
 
     pub fn pop_outbound(&mut self) -> Option<(SocketAddr, Vec<u8>)> {
-        self.outbound.pop_front()
+        self.outbound.lock().pop_front()
     }
 }
 
@@ -138,7 +161,7 @@ impl Socket for MockSocket {
     }
 
     fn receive(&mut self, buffer: &mut MsgBuffer) -> Result<SocketAddr, io::Error> {
-        if let Some((addr, data)) = self.inbound.pop_front() {
+        if let Some((addr, data)) = self.inbound.lock().pop_front() {
             buffer.clear();
             buffer.set_length(data.len());
             buffer.message_mut().copy_from_slice(&data);
@@ -149,9 +172,9 @@ impl Socket for MockSocket {
     }
 
     fn send(&mut self, data: &[u8], addr: SocketAddr) -> Result<usize, io::Error> {
-        self.outbound.push_back((addr, data.into()));
+        self.outbound.lock().push_back((addr, data.into()));
         if self.nat {
-            self.nat_peers.insert(addr, MockTimeSource::now() + 300);
+            self.nat_peers.lock().insert(addr, MockTimeSource::now() + 300);
         }
         Ok(data.len())
     }

src/wsproxy.rs

@@ -13,6 +13,7 @@ use std::{
     io::{self, Cursor, Read, Write},
     net::{Ipv6Addr, SocketAddr, SocketAddrV6, TcpListener, TcpStream, UdpSocket},
     os::unix::io::{AsRawFd, RawFd},
+    sync::Arc,
     thread::spawn
 };
 use tungstenite::{client::AutoStream, connect, protocol::WebSocket, server::accept, Message};
@@ -108,17 +109,21 @@ pub fn run_proxy(listen: &str) -> Result<(), io::Error> {
     Ok(())
 }
 
+#[derive(Clone)]
 pub struct ProxyConnection {
     addr: SocketAddr,
-    socket: WebSocket<AutoStream>
+    socket: Arc<WebSocket<AutoStream>>
 }
 
 impl ProxyConnection {
     fn read_message(&mut self) -> Result<Vec<u8>, io::Error> {
         loop {
+            unimplemented!();
+            /*
             if let Message::Binary(data) = io_error!(self.socket.read_message(), "Failed to read from ws proxy: {}")? {
                 return Ok(data)
             }
+            */
         }
     }
 }
@@ -135,7 +140,7 @@ impl Socket for ProxyConnection {
         let (mut socket, _) = io_error!(connect(parsed_url), "Failed to connect to URL {}: {}", url)?;
         socket.get_mut().set_nodelay(true)?;
         let addr = "0.0.0.0:0".parse::<SocketAddr>().unwrap();
-        let mut con = ProxyConnection { addr, socket };
+        let mut con = ProxyConnection { addr, socket: Arc::new(socket) };
         let addr_data = con.read_message()?;
         con.addr = read_addr(Cursor::new(&addr_data))?;
         Ok(con)
@@ -153,7 +158,8 @@ impl Socket for ProxyConnection {
         let mut msg = Vec::with_capacity(data.len() + 18);
         write_addr(addr, &mut msg)?;
         msg.write_all(data)?;
-        io_error!(self.socket.write_message(Message::Binary(msg)), "Failed to write to ws proxy: {}")?;
+        unimplemented!();
+        //io_error!(self.socket.write_message(Message::Binary(msg)), "Failed to write to ws proxy: {}")?;
         Ok(data.len())
     }