message

Cargo.toml

@@ -25,3 +25,6 @@ tracing = "0.1.40"
 
 [target.'cfg(windows)'.dependencies]
 wintun = "0.4.0"
+
+[features]
+tap = []

Makefile

@@ -1,5 +1,8 @@
 linux:
-	RUSTFLAGS="-L ." cargo build --release
+	RUSTFLAGS="-L ." cargo build --features "tap" --release
+
+linux-tun:
+	RUSTFLAGS="-L ." cargo build --features "tap" --release
 
 pb:
 	cargo run --bin build_pb

message.proto

@@ -38,10 +38,9 @@ message SDLRegisterSuper {
 message SDLRegisterSuperAck {
     SDLDevAddr dev_addr = 1;
     bytes aes_key = 2;
-    map<uint32, bytes> known_macs = 3;
+    uint32 upgrade_type = 3;
-    uint32 upgrade_type = 4;
+    optional string upgrade_prompt = 4;
-    optional string upgrade_prompt = 5;
+    optional string upgrade_address = 5;
-    optional string upgrade_address = 6;
 }
 
 message SDLRegisterSuperNak {
@@ -63,16 +62,6 @@ message SDLPeerInfo {
 
 // 事件定义
 
-message SDLKnownMacEvent {
-    bytes mac = 1;
-    uint32 ip = 2;
-}
-
-message SDLDropMacEvent {
-    bytes mac = 1;
-    uint32 ip = 2;
-}
-
 message SDLNatChangedEvent {
     bytes mac = 1;
     uint32 ip = 2;
@@ -94,7 +83,6 @@ message SDLNetworkShutdownEvent {
 message SDLChangeNetworkCommand {
     SDLDevAddr dev_addr = 1;
     bytes aes_key = 2;
-    map<uint32, bytes> known_macs = 3;
 }
 
 message SDLCommandAck {

src/network/async_main.rs

@@ -7,7 +7,8 @@ use crate::config::{NULL_MAC, TCP_PING_TIME};
 use crate::network::ipv6::run_ipv6;
 use crate::network::{
     generate_arp_request, get_edge, ping_to_sn, read_and_parse_packet, send_arp_request, ArpHdr,
-    ArpRequestInfo, ArpResponse, RegisterSuperFeedback, ARP_REPLY, ARP_REQUEST,
+    ArpRequestInfo, ArpResponse, RegisterSuperFeedback, TunTapPacketHandler, ARP_REPLY,
+    ARP_REQUEST,
 };
 use crate::pb::{
     encode_to_tcp_message, encode_to_udp_message, SdlData, SdlDevAddr, SdlRegisterSuper,
@@ -598,106 +599,9 @@ async fn edge_send_packet_to_net(eee: &Node, data: &[u8]) {
         error!("drop tun packet due to encrypt key len is 0");
         return;
     }
-    let src_mac = eee.device_config.get_mac();
+    eee.device
-
+        .handle_packet_from_device(data, encrypt_key.as_slice())
-    match IpHeaders::from_slice(&data) {
+        .await;
-        Ok((iphdr, _payload)) => {
-            let Some(ipv4hdr) = iphdr.ipv4() else {
-                debug!("ipv6 packet ignored");
-                return;
-            };
-            let dstip = u32::from_be_bytes(ipv4hdr.0.destination);
-            debug!("packet dst ip: {:?}", ipv4hdr.0.destination);
-            let src = u32::from_be_bytes(ipv4hdr.0.source);
-            debug!("packet src ip: {:?}", ipv4hdr.0.source);
-            // packet should be sent to dev
-            debug!("got {} bytes from tun", data.len());
-            if (!eee.config.allow_routing) && (src != eee.device_config.get_ip()) {
-                info!("dropping routed packet");
-                return;
-            }
-            if !eee.is_authorized() {
-                debug!("drop tun packet due to not authed");
-                return;
-            }
-            match send_arp_request(ArpRequestInfo::Lookup { ip: dstip }).await {
-                ArpResponse::LookupResp {
-                    mac,
-                    ip,
-                    do_arp_request,
-                } => {
-                    if do_arp_request {
-                        println!(
-                            "find ip: {:?} => {:?}",
-                            src.to_be_bytes(),
-                            dstip.to_be_bytes()
-                        );
-                        let arp_msg = generate_arp_request(src_mac, ip, eee.device_config.get_ip());
-                        let Ok(encrypted) = aes_encrypt(&encrypt_key, &arp_msg) else {
-                            error!("failed to encrypt arp request");
-                            return;
-                        };
-                        // println!("arp_msg: {:?}", arp_msg);
-                        let data = SdlData {
-                            network_id: eee.network_id.load(Ordering::Relaxed),
-                            src_mac: Vec::from(src_mac),
-                            dst_mac: Vec::from([0xff; 6]),
-                            is_p2p: true,
-                            ttl: SDLAN_DEFAULT_TTL as u32,
-                            data: encrypted,
-                        };
-                        let data =
-                            encode_to_udp_message(Some(data), PacketType::Data as u8).unwrap();
-                        debug!("sending arp");
-                        // let data = marshal_message(&data);
-                        send_packet_to_net(eee, BROADCAST_MAC, &data, arp_msg.len() as u64).await;
-                        // edge.sock.send(data).await;
-                        // println!("should send arp");
-                        return;
-                    }
-
-                    // prepend the ether header
-                    let mut etherheader = Ethernet2Header::default();
-                    etherheader.destination = mac;
-                    etherheader.ether_type = etherparse::EtherType::IPV4;
-                    etherheader.source = src_mac;
-                    let mut packet = Vec::with_capacity(14 + data.len() + 4);
-                    packet.extend_from_slice(&etherheader.to_bytes()[..]);
-                    packet.extend_from_slice(&data);
-                    let crc = CRC_HASH.checksum(&packet);
-                    packet.extend_from_slice(&crc.to_be_bytes());
-
-                    let pkt_size = packet.len();
-                    // println!("sending data with mac");
-
-                    let Ok(encrypted) = aes_encrypt(&encrypt_key, &packet) else {
-                        error!("failed to encrypt packet request");
-                        return;
-                    };
-                    let data = SdlData {
-                        is_p2p: true,
-                        network_id: eee.network_id.load(Ordering::Relaxed),
-                        ttl: SDLAN_DEFAULT_TTL as u32,
-                        src_mac: Vec::from(src_mac),
-                        dst_mac: Vec::from(mac),
-                        data: Vec::from(encrypted),
-                    };
-                    let msg = encode_to_udp_message(Some(data), PacketType::Data as u8).unwrap();
-                    let size = msg.len();
-                    send_packet_to_net(eee, mac, &msg, pkt_size as u64).await;
-                    // let dstip = u32::from_be_bytes(ipv4hdr.0.destination);
-                    println!(
-                        "{:?} => {:?}, size={}",
-                        ipv4hdr.0.source, ipv4hdr.0.destination, size
-                    );
-                }
-                _ => {}
-            }
-        }
-        Err(e) => {
-            error!("failed to parse ip packet: {}", e.to_string());
-        }
-    }
 }
 
 pub async fn send_packet_to_net(eee: &Node, dst_mac: Mac, pkt: &[u8], size: u64) {

src/network/node.rs

@@ -242,6 +242,12 @@ impl Node {
         tcp_pong: Arc<AtomicU64>,
         start_stop: Sender<StartStopInfo>,
     ) -> Self {
+        let mode = if cfg!(feature = "tap") {
+            Mode::Tap
+        } else {
+            Mode::Tun
+        };
+
         Self {
             packet_id: AtomicU32::new(1),
             network_id: AtomicU32::new(0),
@@ -254,7 +260,7 @@ impl Node {
             nat_type: Mutex::new(NatType::Blocked),
 
             device_config: DeviceConfig::new(),
-            device: new_iface("dev", Mode::Tun),
+            device: new_iface("dev", mode),
 
             authorized: AtomicBool::new(false),
             encrypt_key: RwLock::new(Arc::new(Vec::new())),

src/network/packet.rs

@@ -746,7 +746,9 @@ async fn handle_tun_packet(
     }
     let data = origin.unwrap();
     debug!("ether size is {}", data.len());
-    eee.device.handle_packet(&data, key.as_slice()).await;
+    eee.device
+        .handle_packet_from_net(&data, key.as_slice())
+        .await;
     /*
     let msg_size = data.len() as u64;
 

src/network/tun_linux.rs

@@ -1,8 +1,10 @@
 use etherparse::ether_type::ARP;
 use etherparse::{Ethernet2Header, IpHeaders};
+use sdlan_sn_rs::config::SDLAN_DEFAULT_TTL;
 use sdlan_sn_rs::utils::{
-    aes_encrypt, ip_to_string, is_multi_broadcast, net_bit_len_to_mask, SDLanError,
+    aes_encrypt, ip_to_string, is_multi_broadcast, net_bit_len_to_mask, SDLanError, BROADCAST_MAC,
 };
+use std::error::Error;
 use std::ffi::CStr;
 use std::ffi::{c_char, c_int};
 use std::fs::OpenOptions;
@@ -12,12 +14,15 @@ use std::sync::atomic::Ordering;
 use sdlan_sn_rs::utils::Result;
 use std::io::{Read, Write};
 use std::os::fd::AsRawFd;
-use std::process::Command;
+use std::process::{Command, Output};
 
-use tracing::{debug, error};
+use tracing::{debug, error, info};
 
 use crate::get_edge;
-use crate::network::{send_arp_request, send_packet_to_net, ArpHdr, ArpRequestInfo, ARP_REPLY};
+use crate::network::{
+    generate_arp_request, send_arp_request, send_packet_to_net, ArpHdr, ArpRequestInfo,
+    ArpResponse, ARP_REPLY,
+};
 use crate::pb::{encode_to_udp_message, SdlData};
 use crate::tcp::PacketType;
 use crate::utils::{mac_to_string, CRC_HASH};
@@ -111,19 +116,46 @@ impl Iface {
         let ip = ip_to_string(&ip);
         let netbit = ip_to_string(&net_bit_len_to_mask(netbit));
 
-        let res = Command::new("ifconfig")
+        if cfg!(feature = "tap") {
-            .arg(&self.name)
+            println!("set tap device");
-            .arg(ip)
+            let mac = device_config.get_mac();
-            .arg("netmask")
+            let res = Command::new("ifconfig")
-            .arg(&netbit)
+                .arg(&self.name)
-            .arg("up")
+                .arg(ip)
-            .output();
+                .arg("netmask")
-        match res {
+                .arg(&netbit)
-            Ok(_) => {
+                .arg("hw")
-                debug!("ifconfig ok");
+                .arg("ether")
+                .arg(format!(
+                    "{:02x}:{:02x}:{:02x}:{:02x}:{:02x}:{:02x}",
+                    mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]
+                ))
+                .arg("up")
+                .output();
+            match res {
+                Ok(_) => {
+                    debug!("ifconfig ok");
+                }
+                Err(e) => {
+                    error!("failed to run ifconfig: {}", e.to_string());
+                }
             }
-            Err(e) => {
+        } else {
-                error!("failed to run ifconfig: {}", e.to_string());
+            println!("set tun device");
+            let res = Command::new("ifconfig")
+                .arg(&self.name)
+                .arg(ip)
+                .arg("netmask")
+                .arg(&netbit)
+                .arg("up")
+                .output();
+            match res {
+                Ok(_) => {
+                    debug!("ifconfig ok");
+                }
+                Err(e) => {
+                    error!("failed to run ifconfig: {}", e.to_string());
+                }
             }
         }
     }
@@ -137,8 +169,56 @@ impl Iface {
     }
 }
 
+#[cfg(feature = "tap")]
 impl TunTapPacketHandler for Iface {
-    async fn handle_packet(&self, data: &[u8], key: &[u8]) -> std::io::Result<()> {
+    async fn handle_packet_from_net(&self, data: &[u8], _: &[u8]) -> std::io::Result<()> {
+        debug!("in tap mode");
+        match self.send(data) {
+            Err(e) => {
+                error!("failed to write to tap: {}", e.to_string());
+                return Err(e);
+            }
+            Ok(_) => return Ok(()),
+        }
+    }
+    async fn handle_packet_from_device(
+        &self,
+        data: &[u8],
+        encrypt_key: &[u8],
+    ) -> std::io::Result<()> {
+        debug!("in tap mode2");
+        let edge = get_edge();
+        match Ethernet2Header::from_slice(data) {
+            Ok((hdr, _)) => {
+                let target = hdr.destination;
+                let size = data.len();
+
+                let Ok(encrypted) = aes_encrypt(encrypt_key, data) else {
+                    error!("failed to encrypt packet request");
+                    return Ok(());
+                };
+                let data = SdlData {
+                    is_p2p: true,
+                    network_id: edge.network_id.load(Ordering::Relaxed),
+                    ttl: SDLAN_DEFAULT_TTL as u32,
+                    src_mac: Vec::from(edge.device_config.get_mac()),
+                    dst_mac: Vec::from(target),
+                    data: Vec::from(encrypted),
+                };
+                let msg = encode_to_udp_message(Some(data), PacketType::Data as u8).unwrap();
+
+                send_packet_to_net(edge, target, &msg, size as u64).await;
+            }
+            Err(e) => {}
+        };
+        Ok(())
+    }
+}
+
+#[cfg(not(feature = "tap"))]
+impl TunTapPacketHandler for Iface {
+    async fn handle_packet_from_net(&self, data: &[u8], key: &[u8]) -> std::io::Result<()> {
+        debug!("in tun mode");
         // got layer 2 frame
         match Ethernet2Header::from_slice(&data) {
             Ok((hdr, rest)) => {
@@ -287,6 +367,119 @@ impl TunTapPacketHandler for Iface {
 
         Ok(())
     }
+
+    async fn handle_packet_from_device(
+        &self,
+        data: &[u8],
+        encrypt_key: &[u8],
+    ) -> std::io::Result<()> {
+        let eee = get_edge();
+
+        let src_mac = eee.device_config.get_mac();
+
+        match IpHeaders::from_slice(&data) {
+            Ok((iphdr, _payload)) => {
+                let Some(ipv4hdr) = iphdr.ipv4() else {
+                    debug!("ipv6 packet ignored");
+                    return Ok(());
+                };
+                let dstip = u32::from_be_bytes(ipv4hdr.0.destination);
+                debug!("packet dst ip: {:?}", ipv4hdr.0.destination);
+                let src = u32::from_be_bytes(ipv4hdr.0.source);
+                debug!("packet src ip: {:?}", ipv4hdr.0.source);
+                // packet should be sent to dev
+                debug!("got {} bytes from tun", data.len());
+                if (!eee.config.allow_routing) && (src != eee.device_config.get_ip()) {
+                    info!("dropping routed packet");
+                    return Ok(());
+                }
+                if !eee.is_authorized() {
+                    debug!("drop tun packet due to not authed");
+                    return Ok(());
+                }
+                match send_arp_request(ArpRequestInfo::Lookup { ip: dstip }).await {
+                    ArpResponse::LookupResp {
+                        mac,
+                        ip,
+                        do_arp_request,
+                    } => {
+                        if do_arp_request {
+                            println!(
+                                "find ip: {:?} => {:?}",
+                                src.to_be_bytes(),
+                                dstip.to_be_bytes()
+                            );
+                            let arp_msg =
+                                generate_arp_request(src_mac, ip, eee.device_config.get_ip());
+                            let Ok(encrypted) = aes_encrypt(&encrypt_key, &arp_msg) else {
+                                error!("failed to encrypt arp request");
+                                return Ok(());
+                            };
+                            // println!("arp_msg: {:?}", arp_msg);
+                            let data = SdlData {
+                                network_id: eee.network_id.load(Ordering::Relaxed),
+                                src_mac: Vec::from(src_mac),
+                                dst_mac: Vec::from([0xff; 6]),
+                                is_p2p: true,
+                                ttl: SDLAN_DEFAULT_TTL as u32,
+                                data: encrypted,
+                            };
+                            let data =
+                                encode_to_udp_message(Some(data), PacketType::Data as u8).unwrap();
+                            debug!("sending arp");
+                            // let data = marshal_message(&data);
+                            send_packet_to_net(eee, BROADCAST_MAC, &data, arp_msg.len() as u64)
+                                .await;
+                            // edge.sock.send(data).await;
+                            // println!("should send arp");
+                            return Ok(());
+                        }
+
+                        // prepend the ether header
+                        let mut etherheader = Ethernet2Header::default();
+                        etherheader.destination = mac;
+                        etherheader.ether_type = etherparse::EtherType::IPV4;
+                        etherheader.source = src_mac;
+                        let mut packet = Vec::with_capacity(14 + data.len() + 4);
+                        packet.extend_from_slice(&etherheader.to_bytes()[..]);
+                        packet.extend_from_slice(&data);
+                        let crc = CRC_HASH.checksum(&packet);
+                        packet.extend_from_slice(&crc.to_be_bytes());
+
+                        let pkt_size = packet.len();
+                        // println!("sending data with mac");
+
+                        let Ok(encrypted) = aes_encrypt(&encrypt_key, &packet) else {
+                            error!("failed to encrypt packet request");
+                            return Ok(());
+                        };
+                        let data = SdlData {
+                            is_p2p: true,
+                            network_id: eee.network_id.load(Ordering::Relaxed),
+                            ttl: SDLAN_DEFAULT_TTL as u32,
+                            src_mac: Vec::from(src_mac),
+                            dst_mac: Vec::from(mac),
+                            data: Vec::from(encrypted),
+                        };
+                        let msg =
+                            encode_to_udp_message(Some(data), PacketType::Data as u8).unwrap();
+                        let size = msg.len();
+                        send_packet_to_net(eee, mac, &msg, pkt_size as u64).await;
+                        // let dstip = u32::from_be_bytes(ipv4hdr.0.destination);
+                        println!(
+                            "{:?} => {:?}, size={}",
+                            ipv4hdr.0.source, ipv4hdr.0.destination, size
+                        );
+                    }
+                    _ => {}
+                }
+            }
+            Err(e) => {
+                error!("failed to parse ip packet: {}", e.to_string());
+            }
+        }
+        Ok(())
+    }
 }
 
 pub fn get_install_channel() -> String {

src/network/tuntap.rs

@@ -1,3 +1,4 @@
 pub trait TunTapPacketHandler {
-    async fn handle_packet(&self, data: &[u8], key: &[u8]) -> std::io::Result<()>;
+    async fn handle_packet_from_net(&self, data: &[u8], key: &[u8]) -> std::io::Result<()>;
+    async fn handle_packet_from_device(&self, data: &[u8], key: &[u8]) -> std::io::Result<()>;
 }

src/pb/message.rs

@@ -57,13 +57,11 @@ pub struct SdlRegisterSuperAck {
     pub dev_addr: ::core::option::Option<SdlDevAddr>,
     #[prost(bytes = "vec", tag = "2")]
     pub aes_key: ::prost::alloc::vec::Vec<u8>,
-    #[prost(map = "uint32, bytes", tag = "3")]
+    #[prost(uint32, tag = "3")]
-    pub known_macs: ::std::collections::HashMap<u32, ::prost::alloc::vec::Vec<u8>>,
-    #[prost(uint32, tag = "4")]
     pub upgrade_type: u32,
-    #[prost(string, optional, tag = "5")]
+    #[prost(string, optional, tag = "4")]
     pub upgrade_prompt: ::core::option::Option<::prost::alloc::string::String>,
-    #[prost(string, optional, tag = "6")]
+    #[prost(string, optional, tag = "5")]
     pub upgrade_address: ::core::option::Option<::prost::alloc::string::String>,
 }
 #[allow(clippy::derive_partial_eq_without_eq)]
@@ -92,22 +90,6 @@ pub struct SdlPeerInfo {
 }
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]
-pub struct SdlKnownMacEvent {
-    #[prost(bytes = "vec", tag = "1")]
-    pub mac: ::prost::alloc::vec::Vec<u8>,
-    #[prost(uint32, tag = "2")]
-    pub ip: u32,
-}
-#[allow(clippy::derive_partial_eq_without_eq)]
-#[derive(Clone, PartialEq, ::prost::Message)]
-pub struct SdlDropMacEvent {
-    #[prost(bytes = "vec", tag = "1")]
-    pub mac: ::prost::alloc::vec::Vec<u8>,
-    #[prost(uint32, tag = "2")]
-    pub ip: u32,
-}
-#[allow(clippy::derive_partial_eq_without_eq)]
-#[derive(Clone, PartialEq, ::prost::Message)]
 pub struct SdlNatChangedEvent {
     #[prost(bytes = "vec", tag = "1")]
     pub mac: ::prost::alloc::vec::Vec<u8>,
@@ -139,8 +121,6 @@ pub struct SdlChangeNetworkCommand {
     pub dev_addr: ::core::option::Option<SdlDevAddr>,
     #[prost(bytes = "vec", tag = "2")]
     pub aes_key: ::prost::alloc::vec::Vec<u8>,
-    #[prost(map = "uint32, bytes", tag = "3")]
-    pub known_macs: ::std::collections::HashMap<u32, ::prost::alloc::vec::Vec<u8>>,
 }
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]