Move main project to new repository

unshell-rs-lib/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "unshell-rs-lib"
+edition = "2024"
+
+[dependencies]
+base64 = "0.22.1"
+bincode = "2.0.1"
+crossbeam-channel = "0.5.15"
+log = "0.4.27"
+rand = "0.9.1"
+uuid = { version = "1.17.0", features = ["v4"] }

unshell-rs-lib/src/layers/base64.rs

@@ -0,0 +1,42 @@
+use crate::{
+    Error,
+    networkers::{Connection, ProtocolLayer},
+};
+use base64::{Engine as _, engine::general_purpose};
+
+pub struct Base64Layer {
+    inner: Box<dyn Connection>,
+}
+
+impl Connection for Base64Layer {
+    fn get_info(&self) -> String {
+        format!("b64->{}", self.inner.get_info())
+    }
+
+    fn is_alive(&self) -> bool {
+        self.inner.is_alive()
+    }
+
+    fn read(&mut self) -> Result<Vec<u8>, Error> {
+        Ok(general_purpose::STANDARD
+            .decode(&self.inner.read()?)
+            .unwrap())
+    }
+
+    fn write(&mut self, data: &[u8]) -> Result<(), Error> {
+        self.inner
+            .write(general_purpose::STANDARD.encode(data).as_bytes())
+    }
+
+    fn try_clone(&self) -> Result<Box<dyn Connection + Send + Sync>, Error> {
+        Ok(Box::new(Self {
+            inner: self.inner.try_clone()?,
+        }))
+    }
+}
+
+impl ProtocolLayer for Base64Layer {
+    fn new(inner: Box<dyn Connection>) -> Result<Self, Error> {
+        Ok(Base64Layer { inner })
+    }
+}

unshell-rs-lib/src/layers/builder.rs

@@ -0,0 +1,76 @@
+use crate::{
+    Error,
+    layers::{Base64Layer, HandshakeLayer, LayerConfig},
+    networkers::{Connection, ProtocolLayer},
+};
+
+impl Connection for Box<dyn Connection + Send + Sync> {
+    fn get_info(&self) -> String {
+        (**self).get_info()
+    }
+
+    fn is_alive(&self) -> bool {
+        (**self).is_alive()
+    }
+
+    fn read(&mut self) -> Result<Vec<u8>, Error> {
+        (**self).read()
+    }
+
+    fn write(&mut self, data: &[u8]) -> Result<(), Error> {
+        (**self).write(data)
+    }
+
+    fn try_clone(&self) -> Result<Box<dyn Connection + Send + Sync>, Error> {
+        Ok(Box::new((**self).try_clone()?))
+    }
+}
+
+pub fn build_client<C>(
+    base_conn: C,
+    layers: Vec<LayerConfig>,
+) -> Result<Box<dyn Connection + Send>, Error>
+where
+    C: Connection + 'static,
+{
+    let mut current_conn: Box<dyn Connection + Send> = Box::new(base_conn);
+
+    for layer_config in &layers {
+        current_conn = match layer_config {
+            LayerConfig::Base64 => Box::new(Base64Layer::new(current_conn)?),
+            LayerConfig::Handshake => {
+                let mut handshake_layer = HandshakeLayer::new(current_conn)?;
+                handshake_layer.initialize_client()?;
+                Box::new(handshake_layer)
+            }
+        };
+    }
+
+    Ok(current_conn)
+}
+
+pub fn create_server_builder<C>(
+    layers: Vec<LayerConfig>,
+) -> Result<Box<dyn Fn(C) -> Result<Box<dyn Connection + Send>, Error>>, Error>
+where
+    C: Connection + 'static,
+{
+    Ok(Box::new(
+        move |base_conn: C| -> Result<Box<dyn Connection + Send>, Error> {
+            let mut current_conn: Box<dyn Connection + Send> = Box::new(base_conn);
+
+            for layer_config in &layers {
+                current_conn = match layer_config {
+                    LayerConfig::Base64 => Box::new(Base64Layer::new(current_conn)?),
+                    LayerConfig::Handshake => {
+                        let mut handshake_layer = HandshakeLayer::new(current_conn)?;
+                        handshake_layer.initialize_server()?;
+                        Box::new(handshake_layer)
+                    }
+                };
+            }
+
+            Ok(current_conn)
+        },
+    ))
+}

unshell-rs-lib/src/layers/handshake.rs

@@ -0,0 +1,102 @@
+use std::sync::{
+    Arc,
+    atomic::{AtomicBool, Ordering},
+};
+
+use crate::networkers::{Connection, ProtocolLayer};
+
+type Error = Box<dyn std::error::Error>;
+
+// 4-Way Handshake Layer
+pub struct HandshakeLayer {
+    inner: Box<dyn Connection>,
+    finished_handshake: Arc<AtomicBool>,
+}
+
+impl Connection for HandshakeLayer {
+    fn get_info(&self) -> String {
+        format!("handshake->{}", self.inner.get_info())
+    }
+
+    fn is_alive(&self) -> bool {
+        self.inner.is_alive()
+    }
+
+    fn read(&mut self) -> Result<Vec<u8>, Error> {
+        if !self.finished_handshake.load(Ordering::Relaxed) {
+            return Err("NotComplete".into());
+        }
+        self.inner.read()
+    }
+
+    fn write(&mut self, data: &[u8]) -> Result<(), Error> {
+        if !self.finished_handshake.load(Ordering::Relaxed) {
+            return Err("NotComplete".into());
+        }
+        self.inner.write(data)
+    }
+
+    fn try_clone(&self) -> Result<Box<dyn Connection + Send + Sync>, crate::Error> {
+        Ok(Box::new(Self {
+            inner: self.inner.try_clone()?,
+            finished_handshake: Arc::clone(&self.finished_handshake.clone()),
+        }))
+    }
+}
+
+impl ProtocolLayer for HandshakeLayer {
+    fn new(inner: Box<dyn Connection>) -> Result<Self, Error> {
+        Ok(HandshakeLayer {
+            inner,
+            finished_handshake: Arc::new(AtomicBool::new(false)),
+        })
+    }
+
+    fn initialize_client(&mut self) -> Result<(), Error> {
+        // Step 1: Client sends SYN
+        self.inner.write("SYN".as_bytes())?;
+
+        // Step 2: Client receives SYN-ACK
+        let response = self.inner.read()?;
+        if response != "SYN-ACK".as_bytes() {
+            return Err(format!("Expected SYN-ACK, got: {:?}", response).into());
+        }
+
+        // Step 3: Client sends ACK
+        self.inner.write("ACK".as_bytes())?;
+
+        // Step 4: Client receives FIN (final confirmation)
+        let response = self.inner.read()?;
+        if response != "FIN".as_bytes() {
+            return Err(format!("Expected FIN, got: {:?}", response).into());
+        }
+
+        info!("Handshake complete!");
+
+        self.finished_handshake.swap(true, Ordering::Relaxed);
+        Ok(())
+    }
+
+    fn initialize_server(&mut self) -> Result<(), Error> {
+        // Step 1: Server receives SYN
+        let request = self.inner.read()?;
+        if request != "SYN".as_bytes() {
+            return Err(format!("Expected SYN, got: {:?}", request).into());
+        }
+        // Step 2: Server sends SYN-ACK
+        self.inner.write("SYN-ACK".as_bytes())?;
+
+        // Step 3: Server receives ACK
+        let response = self.inner.read()?;
+        if response != "ACK".as_bytes() {
+            return Err(format!("Expected ACK, got: {:?}", response).into());
+        }
+
+        // Step 4: Server sends FIN (final confirmation)
+        self.inner.write("FIN".as_bytes())?;
+        info!("Handshake complete!");
+
+        self.finished_handshake.swap(true, Ordering::Relaxed);
+        Ok(())
+    }
+}

unshell-rs-lib/src/layers/mod.rs

@@ -0,0 +1,17 @@
+use bincode::{Decode, Encode};
+
+#[derive(Encode, Decode, Debug, Clone)]
+pub enum LayerConfig {
+    Base64,
+    Handshake,
+}
+
+mod base64;
+mod builder;
+mod handshake;
+
+pub use base64::Base64Layer;
+pub use handshake::HandshakeLayer;
+
+pub use builder::build_client;
+pub use builder::create_server_builder;

unshell-rs-lib/src/lib.rs

@@ -0,0 +1,13 @@
+#[macro_use]
+extern crate log;
+
+pub type Error = Box<dyn std::error::Error>;
+
+static BINCODE_CONFIG: bincode::config::Configuration = bincode::config::standard();
+
+pub mod layers;
+pub mod networkers;
+pub mod nodes;
+mod packets;
+
+pub use packets::C2Packet;

unshell-rs-lib/src/networkers/mod.rs

@@ -0,0 +1,16 @@
+mod server;
+mod tcp;
+mod traits;
+
+pub use tcp::TCPClient;
+pub use tcp::TCPConnection;
+pub use tcp::TCPServer;
+
+// pub use traits::AsyncConnection;
+pub use traits::ClientTrait;
+pub use traits::Connection;
+pub use traits::ProtocolLayer;
+pub use traits::ServerTrait;
+
+pub use server::run_listener;
+pub use server::run_listener_state;

unshell-rs-lib/src/networkers/server.rs

@@ -0,0 +1,78 @@
+use std::{sync::Arc, thread};
+
+use crate::{
+    layers::{LayerConfig, create_server_builder},
+    networkers::{Connection, ServerTrait},
+};
+
+#[allow(dead_code)]
+pub fn run_listener_state<S, C, R, A>(
+    server: S,
+    layers: Vec<LayerConfig>,
+    on_connect_callback: R,
+    state: Arc<A>,
+)
+/*-> Arc<Mutex<Vec<C>>>*/
+where
+    S: ServerTrait<C> + Sync + Send + 'static,
+    C: Connection + 'static,
+    R: Fn(Box<dyn Connection + Send + 'static>, Arc<A>) + Sync + Send + 'static,
+    A: Sync + Send + 'static,
+{
+    thread::spawn(move || {
+        let layer_builder = create_server_builder::<C>(layers).unwrap();
+        info!("Started listener {}", server.get_info());
+        loop {
+            match server.accept() {
+                Ok(conn) => match layer_builder(conn) {
+                    Ok(conn) => {
+                        info!("New connection ({})", conn.get_info());
+                        on_connect_callback(conn, Arc::clone(&state));
+                    }
+                    Err(e) => {
+                        error!("Failed to create layers: {:?}", e);
+                    }
+                },
+
+                Err(e) => {
+                    error!("Failed to accept connection: {:?}", e);
+                }
+            }
+        }
+    });
+}
+
+#[allow(dead_code)]
+pub fn run_listener<S, C, R>(server: S, layers: Vec<LayerConfig>, on_connect_callback: R)
+/*-> Arc<Mutex<Vec<C>>>*/
+where
+    S: ServerTrait<C> + Sync + Send + 'static,
+    C: Connection + 'static,
+    R: Fn(Box<dyn Connection + Send + 'static>) + Sync + Send + 'static,
+{
+    // let clients: Arc<Mutex<Vec<C>>> = Arc::new(Mutex::new(Vec::new()));
+    // let clients_clone = Arc::clone(&clients);
+
+    thread::spawn(move || {
+        let layer_builder = create_server_builder::<C>(layers).unwrap();
+
+        info!("Started listener {}", server.get_info());
+        loop {
+            match server.accept() {
+                Ok(conn) => match layer_builder(conn) {
+                    Ok(conn) => {
+                        let con_info = conn.get_info();
+                        info!("New connection ({})", con_info);
+                        on_connect_callback(conn);
+                    }
+                    Err(e) => {
+                        error!("Failed to create layers: {:?}", e);
+                    }
+                },
+                Err(e) => {
+                    error!("Failed to accept connection: {:?}", e);
+                }
+            }
+        }
+    });
+}

unshell-rs-lib/src/networkers/tcp.rs

@@ -0,0 +1,131 @@
+use std::{
+    io::{BufReader, Read, Write},
+    net::{SocketAddr, TcpListener, TcpStream},
+    sync::{
+        Arc,
+        atomic::{AtomicBool, Ordering},
+    },
+};
+
+use crate::{
+    Error,
+    networkers::{ClientTrait, Connection, ServerTrait},
+};
+
+pub struct TCPConnection {
+    stream: TcpStream,
+    reader: BufReader<TcpStream>,
+    is_alive: Arc<AtomicBool>,
+}
+
+impl Connection for TCPConnection {
+    fn get_info(&self) -> String {
+        format!(
+            "tcp://{}",
+            if let Ok(addr) = &self.stream.peer_addr() {
+                addr.to_string()
+            } else {
+                "ERROR".to_string()
+            }
+        )
+    }
+
+    fn is_alive(&self) -> bool {
+        self.is_alive.load(Ordering::Relaxed)
+    }
+
+    fn read(&mut self) -> Result<Vec<u8>, Error> {
+        let mut len_bytes = [0u8; 4];
+
+        if let Err(e) = self.reader.read_exact(&mut len_bytes) {
+            self.is_alive.swap(false, Ordering::Relaxed);
+            return Err(format!("Stream disconnected! ({})", e).into());
+        }
+
+        let len = u32::from_be_bytes(len_bytes) as usize;
+
+        let mut buffer = vec![0u8; len];
+
+        // In case the
+        match self.reader.read_exact(&mut buffer) {
+            Ok(()) => Ok(buffer.to_vec()),
+            Err(e) => {
+                self.is_alive.swap(false, Ordering::Relaxed);
+                Err(format!("Stream disconnected! ({})", e).into())
+            }
+        }
+
+        // let mut buf = Vec::new();
+        // let n = self.reader.read(&mut buf)?;
+
+        // Stream sends a null buffer if it is disconnected
+        // if n == 0 {
+        //     self.is_alive.swap(false, Ordering::Relaxed);
+        // }
+
+        // println!("Recieved: {}", line.trim_end().to_string());
+    }
+
+    fn write(&mut self, data: &[u8]) -> Result<(), Error> {
+        let len = data.len() as u32;
+        self.stream.write_all(&len.to_be_bytes())?;
+        self.stream.write_all(data)?;
+        self.stream.flush()?;
+        Ok(())
+    }
+
+    fn try_clone(&self) -> Result<Box<dyn Connection + Send + Sync>, Error> {
+        Ok(Box::new(Self {
+            stream: self.stream.try_clone()?,
+            reader: BufReader::new(self.stream.try_clone()?),
+            is_alive: Arc::clone(&self.is_alive),
+        }))
+    }
+}
+
+pub struct TCPServer {
+    listener: TcpListener,
+}
+
+impl ServerTrait<TCPConnection> for TCPServer {
+    fn get_info(&self) -> String {
+        format!(
+            "tcp://{}",
+            if let Ok(addr) = &self.listener.local_addr() {
+                addr.to_string()
+            } else {
+                "ERROR".to_string()
+            }
+        )
+    }
+
+    fn accept(&self) -> Result<TCPConnection, Error> {
+        let (stream, _) = self.listener.accept()?;
+        let reader = BufReader::new(stream.try_clone()?);
+        Ok(TCPConnection {
+            stream,
+            reader,
+            is_alive: Arc::new(AtomicBool::new(true)),
+        })
+    }
+
+    fn bind(address: &SocketAddr) -> Result<Self, Error> {
+        let listener = TcpListener::bind(address)?;
+        Ok(Self { listener })
+    }
+}
+
+pub struct TCPClient;
+
+impl ClientTrait<TCPConnection> for TCPClient {
+    fn connect(address: &SocketAddr) -> Result<TCPConnection, Error> {
+        let stream = TcpStream::connect(address)?;
+        let reader = BufReader::new(stream.try_clone()?);
+        let conn = TCPConnection {
+            stream,
+            reader,
+            is_alive: Arc::new(AtomicBool::new(true)),
+        };
+        Ok(conn)
+    }
+}

unshell-rs-lib/src/networkers/traits.rs

@@ -0,0 +1,39 @@
+use std::net::SocketAddr;
+
+use crate::Error;
+
+// This is the data transmission type
+pub trait Connection: Send + Sync {
+    fn get_info(&self) -> String;
+    fn is_alive(&self) -> bool;
+
+    fn read(&mut self) -> Result<Vec<u8>, Error>;
+    fn write(&mut self, data: &[u8]) -> Result<(), Error>;
+
+    fn try_clone(&self) -> Result<Box<dyn Connection + Send + Sync>, Error>;
+}
+
+// Trait for protocol layers that can be initialized
+pub trait ProtocolLayer: Connection {
+    fn new(inner: Box<dyn Connection>) -> Result<Self, Error>
+    where
+        Self: Sized;
+    fn initialize_client(&mut self) -> Result<(), Error> {
+        Ok(())
+    }
+    fn initialize_server(&mut self) -> Result<(), Error> {
+        Ok(())
+    }
+}
+
+pub trait ServerTrait<C: Connection> {
+    fn get_info(&self) -> String;
+    fn accept(&self) -> Result<C, Error>;
+    fn bind(address: &SocketAddr) -> Result<Self, Error>
+    where
+        Self: Sized;
+}
+
+pub trait ClientTrait<C: Connection + Sized> {
+    fn connect(address: &SocketAddr) -> Result<C, Error>;
+}

unshell-rs-lib/src/nodes/listener.rs

@@ -0,0 +1,11 @@
+use std::net::SocketAddr;
+
+use bincode::{Decode, Encode};
+
+use crate::layers::LayerConfig;
+
+#[derive(Encode, Decode, Debug, Clone)]
+pub struct ConnectionConfig {
+    pub socket: SocketAddr,
+    pub layers: Vec<LayerConfig>,
+}

unshell-rs-lib/src/nodes/mod.rs

@@ -0,0 +1,10 @@
+mod listener;
+mod node;
+mod node_container;
+mod packets;
+mod stream;
+
+pub use listener::ConnectionConfig;
+pub use node::Node;
+pub use node_container::NodeContainer;
+pub use stream::Stream;

unshell-rs-lib/src/nodes/node.rs

@@ -0,0 +1,483 @@
+use std::{
+    collections::HashMap,
+    fmt::Debug,
+    sync::{Arc, Mutex, MutexGuard},
+    thread,
+    time::Duration,
+};
+
+use bincode::{Decode, Encode};
+use crossbeam_channel::{Receiver, RecvError, Sender};
+// use std:::{Receiver, Sender};
+#[allow(deprecated)]
+use rand::{seq::IndexedRandom, thread_rng};
+
+use crate::{
+    Error,
+    layers::build_client,
+    networkers::{ClientTrait, Connection, ServerTrait, TCPClient, TCPServer, run_listener_state},
+    nodes::{
+        listener::ConnectionConfig,
+        packets::{Packets, decode_vec, encode_vec},
+    },
+};
+
+fn read(c: &mut Box<dyn Connection + Send>) -> Result<Packets, Error> {
+    Packets::decode(c.read()?.as_slice())
+}
+
+fn write(c: &mut Box<dyn Connection + Send>, packet: Packets) -> Result<(), Error> {
+    c.write(&(packet.encode()?))
+}
+
+pub struct Node<P>
+where
+    P: Encode + Decode<()> + Debug + Clone + 'static,
+{
+    pub state: Arc<Mutex<NodeState<P>>>,
+    rx: Receiver<(String, P)>,
+    disconnect_rx: Receiver<String>,
+}
+
+impl<P> Node<P>
+where
+    P: Encode + Decode<()> + Debug + Clone + Send + 'static,
+{
+    pub fn run_node(
+        id: String,
+        clients: Vec<ConnectionConfig>,
+        listeners: Vec<ConnectionConfig>,
+    ) -> Result<Self, Error>
+    where
+        P: Encode + Decode<()> + Debug + Clone + 'static,
+    {
+        // let mut parent = build_client(TCPClient::connect(&parent.socket)?, parent.layers)?;
+
+        let (tx, rx) = crossbeam_channel::unbounded();
+        let (disconnect_tx, disconnect_rx) = crossbeam_channel::unbounded();
+
+        let state = Arc::new(Mutex::new(NodeState::<P> {
+            id: id, //Uuid::new_v4().to_string(), //TODO: Calling an OS RNG can pose a problem for security;
+            connections: HashMap::new(),
+            map: HashMap::new(),
+            packet_listener: tx,
+            disconnect_listener: disconnect_tx,
+        }));
+
+        for listener in listeners {
+            run_listener_state(
+                TCPServer::bind(&listener.socket)?,
+                listener.layers,
+                Self::on_listener_client,
+                Arc::clone(&state),
+            );
+        }
+
+        for client in clients {
+            let state = Arc::clone(&state);
+            thread::spawn(move || {
+                loop {
+                    if let Err(e) = Self::run_client(client.clone(), &state) {
+                        error!("Could not connect to server; {:?}", e);
+                    }
+
+                    thread::sleep(Duration::from_millis(1000));
+                }
+            });
+        }
+
+        Ok(Self {
+            state,
+            rx,
+            disconnect_rx,
+        })
+    }
+
+    fn run_client(client: ConnectionConfig, state: &Arc<Mutex<NodeState<P>>>) -> Result<(), Error> {
+        Self::run_connection(
+            build_client(TCPClient::connect(&client.socket)?, client.layers)?,
+            state,
+        )?;
+
+        Ok(())
+    }
+
+    fn on_listener_client(
+        connection: Box<dyn Connection + Send + 'static>,
+        state: Arc<Mutex<NodeState<P>>>,
+    ) {
+        thread::spawn(move || {
+            if let Err(e) = Self::run_connection(connection, &state) {
+                error!("Could not connect; {}", e);
+            }
+        });
+    }
+
+    fn run_connection(
+        connection: Box<dyn Connection + Send + 'static>,
+        state: &Arc<Mutex<NodeState<P>>>,
+    ) -> Result<(), Error> {
+        let mut connection = connection;
+        let s = state.lock().unwrap();
+
+        let this_uuid = s.id.clone();
+        std::mem::drop(s);
+
+        // Send UUID to new connection
+        write(&mut connection, Packets::SyncUUID(this_uuid.clone()))?;
+
+        // Recieve UUID
+        let uuid_result = read(&mut connection)?;
+        let other_uuid = if let Packets::SyncUUID(source) = uuid_result {
+            source
+        } else {
+            return Err(format!("Could not get UUID! Got {:?}", uuid_result).into());
+        };
+
+        if (&mut state.lock().unwrap()).knows_client(&other_uuid) {
+            write(&mut connection, Packets::ErrorNameExists)?;
+            return Err(format!(
+                "Attempted to accept connection from node {} which already exists!",
+                other_uuid
+            )
+            .into());
+        }
+
+        info!("New Node! {} (direct)", other_uuid);
+
+        // Add connection
+        (&mut state.lock().unwrap())
+            .connections
+            .insert(other_uuid.clone(), connection.try_clone()?);
+
+        // Update direct connections and the new connections with the new table
+        (&mut state.lock().unwrap()).broadcast_table(None);
+
+        loop {
+            match read(&mut connection) {
+                Ok(packet) => {
+                    let result: Result<(), Error> =
+                        match packet {
+                            Packets::Disconnect { routes } => Ok(
+                                (&mut state.lock().unwrap()).disconnect(&other_uuid, routes, false)
+                            ),
+                            Packets::Update { routes } => Ok((&mut state.lock().unwrap())
+                                .extend_routes(other_uuid.clone(), routes)),
+                            Packets::DataUnrouted {
+                                src: source,
+                                dest,
+                                data,
+                            } => (&mut state.lock().unwrap()).route_packet(source, dest, data),
+                            _ => {
+                                error!("Unsupported packet: {:?}", packet);
+
+                                Ok(())
+                            }
+                        };
+
+                    if let Err(e) = result {
+                        error!("Could not parse; {}", e);
+                    }
+                }
+                Err(e) => {
+                    if !connection.is_alive() {
+                        warn!("Connection {} Disconnected!", connection.get_info());
+                        let state = &mut state.lock().unwrap();
+                        state.connections.remove(&other_uuid);
+                        state.disconnect(&this_uuid, vec![other_uuid.clone()], true);
+
+                        break;
+                    }
+
+                    error!("Could not read; {}", e);
+                }
+            }
+        }
+
+        Ok(())
+    }
+
+    pub fn recv(&self) -> Result<(String, P), RecvError> {
+        self.rx.recv()
+    }
+
+    pub fn state(&self) -> MutexGuard<'_, NodeState<P>> {
+        self.state.lock().unwrap()
+    }
+
+    pub fn try_clone(&self) -> Result<Self, Error> {
+        Ok(Self {
+            state: Arc::clone(&self.state),
+            rx: self.rx.clone(),
+            disconnect_rx: self.disconnect_rx.clone(),
+        })
+    }
+
+    pub fn send_unrouted(&self, dest: String, data: &P) -> Result<(), Error> {
+        self.state().send_unrouted(dest, data)
+    }
+
+    pub fn get_disconnect_rx(&self) -> Receiver<String> {
+        self.disconnect_rx.clone()
+    }
+}
+
+pub struct NodeState<P>
+where
+    P: Encode + Decode<()> + Debug + Clone + 'static,
+{
+    id: String,
+    connections: HashMap<String, Box<dyn Connection + Send>>,
+    map: HashMap<String, Vec<String>>,
+    packet_listener: Sender<(String, P)>,
+    disconnect_listener: Sender<String>,
+}
+
+impl<P> NodeState<P>
+where
+    P: Encode + Decode<()> + Debug + Clone + Send + 'static,
+{
+    // Get list of all nodes in map
+    fn get_known_nodes(&self) -> Vec<String> {
+        self.map.keys().map(|k| k.clone()).collect::<Vec<String>>()
+    }
+
+    // Get list of node UUIDs that are directly connected to this node
+    fn get_direct_nodes(&self) -> Vec<String> {
+        self.connections
+            .keys()
+            .map(|k| k.clone())
+            .collect::<Vec<String>>()
+    }
+
+    fn knows_client(&self, id: &String) -> bool {
+        self.get_all_nodes().contains(id)
+    }
+
+    // Remove all nodes where the routes are empty
+    fn remove_null_nodes(&mut self) {
+        self.map.retain(|_, routes| !routes.is_empty());
+    }
+
+    // Send packet to all directly connected nodes, except maybe one
+    fn broadcast(&mut self, data: Packets, disclude: Option<&String>) {
+        for (uuid, connection) in self.connections.iter_mut() {
+            if disclude.is_some() && disclude.unwrap() == uuid {
+                continue;
+            }
+            if let Err(e) = write(connection, data.clone()) {
+                error!("Failed to send packet to {}, {}", uuid, e);
+            }
+        }
+    }
+
+    // Get list of nodes to send to another as known routes
+    fn get_routes_to(&self, recv_uuid: &String) -> Vec<String> {
+        let mut tx_routes: Vec<String> = Vec::new();
+
+        // Append
+        for (map_uuid, routes) in self.map.iter() {
+            // Do not transmit a route, which bounces directly back to the sender
+            if routes.len() == 1 && &routes[0] == recv_uuid {
+                continue;
+            }
+
+            tx_routes.push(map_uuid.clone());
+        }
+
+        // Append directly connected nodes
+        tx_routes.append(&mut self.get_direct_nodes());
+
+        tx_routes
+    }
+
+    fn broadcast_table(&mut self, disclude: Option<&String>) {
+        let packets = self
+            .connections
+            .iter()
+            .map(|(recv_uuid, _)| self.get_routes_to(&recv_uuid))
+            .collect::<Vec<Vec<String>>>();
+
+        for (i, (recv_uuid, connection)) in self.connections.iter_mut().enumerate() {
+            if let Some(disclude) = disclude {
+                if disclude == recv_uuid {
+                    continue;
+                }
+            }
+
+            if let Err(e) = write(
+                connection,
+                Packets::Update {
+                    routes: packets[i].clone(),
+                },
+            ) {
+                error!("Failed to send packet to {}, {}", recv_uuid, e);
+            }
+        }
+    }
+
+    fn disconnect(&mut self, source: &String, routes: Vec<String>, direct: bool) {
+        let mut resend_table = false;
+        let mut remove_uuids = Vec::new();
+
+        for remove_uuid in routes {
+            // Sanity check, in case the current client is still connected
+            if self.get_direct_nodes().contains(&remove_uuid) {
+                resend_table = true;
+                continue;
+            }
+
+            // Check if client still exists, or if it was a direct connection
+            // Prevents infinite network loops
+            if direct || self.knows_client(&remove_uuid) {
+                self.map.remove(&remove_uuid);
+                remove_uuids.push(remove_uuid.clone());
+
+                info!(
+                    "Node disconnected! {} ({})",
+                    remove_uuid,
+                    if direct { "direct" } else { "indirect" }
+                );
+
+                self.disconnect_listener.send(remove_uuid.clone()).unwrap();
+
+                for (uuid, route) in self.map.iter_mut() {
+                    if route.contains(&remove_uuid) {
+                        let index = route.iter().position(|r| r == &remove_uuid).unwrap();
+                        route.remove(index);
+                        remove_uuids.push(uuid.clone());
+                    }
+                }
+
+                self.remove_null_nodes();
+            }
+        }
+
+        if !remove_uuids.is_empty() {
+            self.broadcast(
+                Packets::Disconnect {
+                    routes: remove_uuids,
+                },
+                Some(source),
+            );
+        }
+
+        if resend_table {
+            self.broadcast_table(None);
+        }
+
+        // self.print_map();
+    }
+
+    fn extend_routes(&mut self, src: String, routes: Vec<String>) {
+        let mut updated = false;
+
+        // Quick sanity check
+        if !self.get_direct_nodes().contains(&src) {
+            return;
+        }
+
+        // Loop through all of the routes in the new recieved route map
+        for route in routes {
+            // If the route loops back to self, disregard.
+            if route == self.id {
+                continue;
+            }
+
+            // If the connection is already established directly, disregard
+            if self.get_direct_nodes().contains(&route) {
+                continue;
+            }
+
+            // If there is already an entry created for this route
+            if self.map.contains_key(&route) {
+                // If the route does not already contain the new one
+                if !self.map.get(&route).unwrap().contains(&src) {
+                    // If the neighbor can be acessed directly, disregard
+                    self.map.get_mut(&route).unwrap().push(src.clone());
+                    info!("Node update: {} (indirect)", src);
+                    updated = true;
+                } else {
+                    // Else, do nothing
+                    continue;
+                }
+            } else {
+                // Else, create the new route entry
+                self.map.insert(route.clone(), vec![src.clone()]);
+                info!("Node update: {} (indirect)", src);
+                updated = true;
+            }
+        }
+
+        // Solves the case that if a remote node has said that a neighbor has connected before itself has
+        let direct_connections = self.get_direct_nodes();
+        for connection in direct_connections {
+            if self.map.contains_key(&connection) {
+                self.map.remove(&connection);
+            }
+        }
+
+        // If something has updated, rebroadcast
+        // Prevents infinite network loops
+        if updated {
+            self.broadcast_table(Some(&src));
+        }
+        // self.print_map();
+    }
+
+    fn route_packet(&mut self, src: String, dest: String, data: Vec<u8>) -> Result<(), Error> {
+        if dest == self.id {
+            self.packet_listener.send((src, decode_vec::<P>(&data)?))?;
+
+            Ok(())
+        } else {
+            if self.connections.contains_key(&dest) {
+                write(
+                    self.connections.get_mut(&dest).unwrap(),
+                    Packets::DataUnrouted { src, dest, data },
+                )?;
+
+                Ok(())
+            } else if self.map.contains_key(&dest) {
+                #[allow(deprecated)]
+                let next_uuid = self
+                    .map
+                    .get(&dest)
+                    .unwrap()
+                    .choose(&mut thread_rng())
+                    .unwrap()
+                    .clone();
+
+                write(
+                    self.connections.get_mut(&next_uuid).unwrap(),
+                    Packets::DataUnrouted { src, dest, data },
+                )?;
+
+                Ok(())
+            } else {
+                Err::<(), Error>(format!("Could not find route from {} to {}!", src, dest).into())
+            }
+        }
+    }
+
+    pub fn send_unrouted(&mut self, dest: String, data: &P) -> Result<(), Error> {
+        self.route_packet(self.id.clone(), dest, encode_vec(data)?)
+    }
+
+    pub fn get_all_nodes(&self) -> Vec<String> {
+        let mut uuids = self.get_known_nodes();
+        uuids.append(&mut self.get_direct_nodes());
+        uuids
+    }
+
+    #[allow(dead_code)]
+    fn print_map(&self) {
+        info!("\n\n");
+        info!("Local addr: {}", self.id);
+        info!("Table: ");
+        for (uuid, route) in self.map.iter() {
+            info!("{} -> [ {:?} ]", uuid, route);
+        }
+        info!("Direct: {:?}", self.get_direct_nodes());
+    }
+}

unshell-rs-lib/src/nodes/node_container.rs

@@ -0,0 +1,183 @@
+use std::{
+    collections::HashMap,
+    sync::{Arc, Mutex},
+    thread,
+};
+
+use crossbeam_channel::{Receiver, Sender};
+
+use crate::{
+    Error,
+    nodes::{ConnectionConfig, Node, Stream, stream::StreamHandle},
+    packets::TransportLayerPacket,
+};
+
+type Streams = Arc<Mutex<HashMap<(usize, String), StreamHandle>>>;
+
+pub struct NodeContainer {
+    streams: Streams,
+    node: Node<TransportLayerPacket>,
+    on_stream_rx: Receiver<Stream>,
+    // state: Arc<Mutex<NodeState<TransportLayerPacket>>>,
+    // spontanious_rx: Receiver<(String, C2Packet)>,
+}
+
+impl NodeContainer {
+    pub fn connect(
+        id: String,
+        clients: Vec<ConnectionConfig>,
+        listeners: Vec<ConnectionConfig>,
+    ) -> Result<Self, Error> {
+        let node = Node::<TransportLayerPacket>::run_node(id, clients, listeners)?;
+        let streams = Arc::new(Mutex::new(HashMap::new()));
+        // let (spontanious_tx, spontanious_rx) = crossbeam_channel::unbounded();
+        let (on_stream_tx, on_stream_rx) = crossbeam_channel::unbounded();
+
+        let s = Self {
+            streams: Arc::clone(&streams),
+            node: node.try_clone()?,
+            on_stream_rx,
+        };
+
+        let close_rx = node.get_disconnect_rx();
+        let stream_clone = Arc::clone(&streams);
+        thread::spawn(move || {
+            loop {
+                let close_uuid = close_rx.recv().unwrap();
+                let stream = stream_clone.lock().unwrap();
+                let keys = stream.keys();
+                for key in keys {
+                    if key.1 == close_uuid {
+                        warn!("Stream ({}, {}) disconnected!", key.0, key.1);
+                        let handle = (&mut stream_clone.lock().unwrap()).remove(key).unwrap();
+                        handle.close();
+                    }
+                }
+            }
+        });
+
+        // Start node listening thread
+        thread::spawn(move || {
+            loop {
+                if let Err(e) = Self::node_listening_thread(&node, &streams, &on_stream_tx) {
+                    error!("Got error: {}", e);
+                }
+            }
+        });
+
+        Ok(s)
+    }
+
+    fn node_listening_thread(
+        node: &Node<TransportLayerPacket>,
+        streams: &Streams,
+        on_stream_tx: &Sender<Stream>, // spontanious_tx: &Sender<(String, C2Packet)>,
+    ) -> Result<(), Error> {
+        // info!("Loop");
+        let (src, packet) = node.recv()?;
+        info!("Packet: {:?}", packet);
+
+        match packet {
+            TransportLayerPacket::RequestStreamUnrouted {
+                stream_id: remote_stream_id,
+            } => {
+                // Create stream ID
+                let local_stream_id = streams.lock().unwrap().keys().len();
+                // Send response to server including local id and remoe ID
+                Stream::respond_create(src.clone(), local_stream_id, remote_stream_id, node)?;
+
+                Self::create_handle_thread(
+                    on_stream_tx,
+                    streams,
+                    node,
+                    src,
+                    local_stream_id,
+                    remote_stream_id,
+                )?;
+                Ok(())
+            }
+            TransportLayerPacket::AckStreamUnrouted {
+                ack_stream_id,
+                stream_id,
+            } => {
+                Self::create_handle_thread(
+                    on_stream_tx,
+                    streams,
+                    node,
+                    src,
+                    ack_stream_id,
+                    stream_id,
+                )?;
+                Ok(())
+            }
+            TransportLayerPacket::StreamDataUnrouted { stream_id, data } => {
+                match streams.lock().unwrap().get(&(stream_id, src.clone())) {
+                    Some(handle) => Ok(handle.send(data).unwrap()),
+                    // Some(_) => Err(format!(
+                    //     "Stream {}, {} has not been initilized!",
+                    //     stream_id, src
+                    // )
+                    // .into()),
+                    None => Err(format!("Stream {}, {} does not exist!", stream_id, src).into()),
+                }
+            } // _ => Err(format!("Unsupported packet: {:?}", packet).into()),
+        }
+    }
+
+    fn create_handle_thread(
+        on_stream_tx: &Sender<Stream>,
+        streams: &Streams,
+        node: &Node<TransportLayerPacket>,
+        src: String,
+        local_stream_id: usize,
+        remote_stream_id: usize,
+    ) -> Result<(), Error> {
+        info!("Local: {}, Remote: {}", local_stream_id, remote_stream_id);
+
+        // Create stream from local and remote stream handles
+        let (stream, handle) =
+            Stream::create_handle(src.clone(), local_stream_id, remote_stream_id)?;
+
+        on_stream_tx.send(stream)?;
+
+        // Add the local stream to map
+        streams
+            .lock()
+            .unwrap()
+            .insert((local_stream_id, src.clone()), handle.clone()?);
+
+        let node_clone = node.try_clone()?;
+        thread::spawn(move || {
+            loop {
+                let data = handle.recv().unwrap();
+                if let Err(e) = node_clone.state().send_unrouted(
+                    src.clone(),
+                    &TransportLayerPacket::StreamDataUnrouted {
+                        stream_id: remote_stream_id,
+                        data,
+                    },
+                ) {
+                    error!("Got error: {}", e);
+                    break;
+                }
+            }
+        });
+
+        Ok(())
+    }
+
+    pub fn create_stream_block(&self, dest: String) -> Result<Stream, Error> {
+        let local_stream_id = self.streams.lock().unwrap().keys().len();
+        Stream::ask_create(dest.clone(), local_stream_id, &self.node)?;
+        Ok(self.on_stream_rx.recv()?)
+    }
+
+    pub fn recv_stream(&self) -> Result<Stream, Error> {
+        Ok(self.on_stream_rx.recv()?)
+    }
+
+    pub fn get_nodes(&self) -> Vec<String> {
+        self.node.state().get_all_nodes()
+        // self.state.lock().unwrap().get_all_nodes()
+    }
+}

unshell-rs-lib/src/nodes/packets.rs

@@ -0,0 +1,60 @@
+use std::fmt::Debug;
+
+use bincode::{Decode, Encode, config::Configuration};
+
+use crate::Error;
+
+#[derive(Debug, Encode, Decode, Clone)]
+pub enum Packets {
+    SyncUUID(String),
+    Update {
+        routes: Vec<String>,
+    },
+    Disconnect {
+        routes: Vec<String>,
+    },
+
+    // Send single data packet without routing details
+    DataUnrouted {
+        src: String,
+        dest: String,
+        data: Vec<u8>,
+    },
+    // Send single data packet with routing details
+    DataRouted {
+        path: Vec<String>,
+        data: Vec<u8>,
+    },
+
+    // DataStreamRouted {
+    //     path: Vec<String>,
+    //     data: Vec<u8>,
+    // },
+    ErrorNameExists,
+}
+
+impl Packets {
+    pub fn encode(&self) -> Result<Vec<u8>, Error> {
+        encode_vec(self)
+    }
+    pub fn decode(data: &[u8]) -> Result<Self, Error> {
+        decode_vec(data)
+    }
+}
+
+pub fn encode_vec<P>(object: &P) -> Result<Vec<u8>, Error>
+where
+    P: Encode + Decode<()> + Debug + Clone + 'static,
+{
+    Ok(bincode::encode_to_vec(object, crate::BINCODE_CONFIG)?)
+}
+
+pub fn decode_vec<P>(data: &[u8]) -> Result<P, Error>
+where
+    P: Encode + Decode<()> + Debug + Clone + 'static,
+{
+    let (decoded, _) =
+        bincode::decode_from_slice::<P, Configuration>(&data[..], crate::BINCODE_CONFIG)?;
+
+    Ok(decoded)
+}

unshell-rs-lib/src/nodes/stream.rs

@@ -0,0 +1,155 @@
+use std::sync::{
+    Arc,
+    atomic::{AtomicBool, Ordering},
+};
+
+use crossbeam_channel::{Receiver, Sender};
+
+use crate::{Error, networkers::Connection, nodes::Node, packets::TransportLayerPacket};
+
+pub struct Stream {
+    tx: Sender<Vec<u8>>,
+    rx: Receiver<Vec<u8>>,
+    closed: Arc<AtomicBool>,
+}
+
+impl Connection for Stream {
+    fn get_info(&self) -> String {
+        "unrouted".to_string()
+    }
+
+    fn is_alive(&self) -> bool {
+        self.closed.load(Ordering::Relaxed)
+    }
+
+    fn read(&mut self) -> Result<Vec<u8>, crate::Error> {
+        if self.closed.load(Ordering::Relaxed) {
+            Err("Connection closed".into())
+        } else {
+            Ok(self.rx.recv()?)
+        }
+    }
+
+    fn write(&mut self, data: &[u8]) -> Result<(), crate::Error> {
+        if self.closed.load(Ordering::Relaxed) {
+            Err("Connection closed".into())
+        } else {
+            Ok(self.tx.send(data.to_vec())?)
+        }
+    }
+
+    fn try_clone(&self) -> Result<Box<dyn Connection + Send + Sync>, crate::Error> {
+        Ok(Box::new(Self {
+            tx: self.tx.clone(),
+            rx: self.rx.clone(),
+            closed: Arc::clone(&self.closed),
+        }))
+    }
+}
+
+impl Stream {
+    pub fn ask_create(
+        dest: String,
+        local_stream_id: usize,
+        node: &Node<TransportLayerPacket>,
+    ) -> Result<(), Error> {
+        info!("Sent to {}", dest);
+        node.send_unrouted(
+            dest.clone(),
+            &TransportLayerPacket::RequestStreamUnrouted {
+                stream_id: local_stream_id,
+            },
+        )?;
+
+        Ok(())
+
+        // Self::create_handle(dest, local_stream_id, remote_stream_id, node)
+    }
+
+    pub fn respond_create(
+        dest: String,
+        local_stream_id: usize,
+        remote_stream_id: usize,
+        node: &Node<TransportLayerPacket>,
+    ) -> Result<(), Error> {
+        node.send_unrouted(
+            dest.clone(),
+            &&TransportLayerPacket::AckStreamUnrouted {
+                ack_stream_id: remote_stream_id,
+                stream_id: local_stream_id,
+            },
+        )?;
+
+        Ok(())
+    }
+
+    pub fn create_handle(
+        dest: String,
+        local_stream_id: usize,
+        remote_stream_id: usize,
+    ) -> Result<(Self, StreamHandle), Error> {
+        let (recv_tx, recv_rx) = crossbeam_channel::unbounded();
+        let (send_tx, send_rx) = crossbeam_channel::unbounded();
+
+        let closed = Arc::new(AtomicBool::new(false));
+
+        let handle = StreamHandle {
+            dest,
+            tx: recv_tx,
+            rx: send_rx,
+            local_stream_id,
+            remote_stream_id,
+            closed: Arc::clone(&closed),
+        };
+
+        Ok((
+            Self {
+                tx: send_tx,
+                rx: recv_rx,
+                closed,
+            },
+            handle,
+        ))
+    }
+
+    // pub fn new(tx: Sender<Vec<u8>>, rx: Receiver<Vec<u8>>) -> Self {
+    //     Self { tx, rx }
+    // }
+}
+
+pub struct StreamHandle {
+    pub dest: String,
+    pub local_stream_id: usize,
+    pub remote_stream_id: usize,
+
+    tx: Sender<Vec<u8>>,
+    rx: Receiver<Vec<u8>>,
+    closed: Arc<AtomicBool>,
+}
+
+impl StreamHandle {
+    pub fn send(&self, data: Vec<u8>) -> Result<(), Error> {
+        Ok(self.tx.send(data)?)
+    }
+    pub fn has_content(&self) -> bool {
+        self.rx.len() > 0
+    }
+    pub fn recv(&self) -> Result<Vec<u8>, Error> {
+        Ok(self.rx.recv()?)
+    }
+    pub fn clone(&self) -> Result<Self, Error> {
+        Ok(Self {
+            dest: self.dest.clone(),
+            local_stream_id: self.local_stream_id.clone(),
+            remote_stream_id: self.remote_stream_id.clone(),
+            tx: self.tx.clone(),
+            rx: self.rx.clone(),
+            closed: Arc::clone(&self.closed),
+        })
+    }
+    pub fn close(self) {
+        drop(self.tx);
+        drop(self.rx);
+        self.closed.store(false, Ordering::Relaxed);
+    }
+}

unshell-rs-lib/src/packets.rs

@@ -0,0 +1,29 @@
+use bincode::{Decode, Encode};
+use std::fmt::Debug;
+
+#[derive(Debug, Encode, Decode, Clone)]
+pub enum TransportLayerPacket {
+    RequestStreamUnrouted {
+        stream_id: usize,
+    },
+    AckStreamUnrouted {
+        ack_stream_id: usize,
+        stream_id: usize,
+    },
+    StreamDataUnrouted {
+        stream_id: usize,
+        data: Vec<u8>,
+    },
+    // SpontaniousDataUnrouted {
+    //     data: Vec<u8>,
+    // },
+}
+
+#[derive(Debug, Encode, Decode, Clone)]
+pub enum C2Packet {
+    Ping,
+    Pong,
+
+    CreatePTY { width: usize, height: usize },
+    PTYData,
+}