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"rt-multi-thread", "net", "macros", "fs"] } -tokio-tungstenite = "0.14.0" - -# Required for the private server interface -hyper = { version = "0.14", features = ["full"] } - -jsonwebtoken = "7" - -# For caching mysql pools -lazy_static = "1.4.0" - -# For serialization of data in events -serde = { version = "1.0", features = ["derive"] } - -clap = "2.33.3" diff --git a/rtc-server/Makefile b/rtc-server/Makefile deleted file mode 100644 index f393e43..0000000 --- a/rtc-server/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -default: - cargo build --release - -clean: - cargo clean - -run: - cargo run --release diff --git a/rtc-server/auth.js b/rtc-server/auth.js new file mode 100644 index 0000000..74c6f65 --- /dev/null +++ b/rtc-server/auth.js @@ -0,0 +1,50 @@ +const jsonwebtoken = require('jsonwebtoken') +const fs = require('fs') + +const SERVER_HMAC = fs.readFileSync('wss-hmac.secret') +const USER_HMAC = fs.readFileSync('hmac.secret') + + +exports.verify = function(token) { + /** + * @param {String} token + * @returns 'user' on user connection + * @returns 'server' on server connection + * @retusn false on failure + */ + console.log('given token: ', token) + try { + const decoded = jsonwebtoken.verify(token, USER_HMAC, vconfig); + return 'user' + } catch (err) { + try { + const decoded = jsonwebtoken.verify(token, SERVER_HMAC, {ignoreNotBefore: true}) + return 'server' + } catch (err) { + console.log('failed server check: ', err) + return false + } + } +} + + +exports.prepare_auth = function(req) { + // NOTE: Why? because setting headers from the server is completely undocumented and I've ran + // through basically every library under the sun I literally con't be fucked to + // read people's code for a feature that could have a fucking tweet as documentation + + // Typical User connections are setup with authentication in the headers + // Requested channel is the path + let header_auth = req.headers['authentication'] || req.headers['jwt'] + if(!header_auth) { + let path = req.url + let uri = '/jwt/' + if(req.url.startsWith(uri)) { + let jwt = req.url.slice(uri.length) + return [jwt,null] + } + } + else { + return [header_auth, req.url] + } +} diff --git a/rtc-server/main.js b/rtc-server/main.js new file mode 100644 index 0000000..9c6c007 --- /dev/null +++ b/rtc-server/main.js @@ -0,0 +1,43 @@ +const ws = require('ws') +const peersapi = require('./peers.js') +const auth = require('./auth.js') + +const server = new ws.Server({ port: 5648 }) +const peers = new peersapi.PeerMap() + + +server.on('connection', function(ws, req) { + let [jwt, path] = auth.prepare_auth(req) + let conn = auth.verify(jwt) + if(conn == 'server') { + console.log('[WSS] New server connection') + // Peer map initialization + ws.on('open', function() { + peers.add_server(ws) + }) + ws.on('close', function() { + console.log('server left') + peers.remove_server(ws) + }) + + ws.on('message', function(message) { + peers.notify(message) + }) + + } else if(conn == 'user') { + ws.on('open', function() { + console.log('adding with path', req.url) + peers.add_user(ws, req.url) + }) + + ws.on('close', function() { + peers.remove_user(ws) + }) + + console.log('[WSS] New user conncetion') + } else { + console.log('[WSS] No valid auth') + ws.close() + } + +}) diff --git a/rtc-server/package-lock.json b/rtc-server/package-lock.json new file mode 100644 index 0000000..1fa350c --- /dev/null +++ b/rtc-server/package-lock.json @@ -0,0 +1,112 @@ +{ + "name": "rtc-server", + "version": "1.0.0", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + "buffer-equal-constant-time": { + "version": "1.0.1", + "resolved": "https://registry.npmjs.org/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz", + "integrity": "sha1-+OcRMvf/5uAaXJaXpMbz5I1cyBk=" + }, + "ecdsa-sig-formatter": { + "version": "1.0.11", + "resolved": "https://registry.npmjs.org/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.11.tgz", + "integrity": 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}, + "repository": { + "type": "git", + "url": "git+https://gitlab.com/shockrah/freechat.git" + }, + "author": "shockrah", + "license": "GPL-3.0", + "bugs": { + "url": "https://gitlab.com/shockrah/freechat/issues" + }, + "homepage": "https://gitlab.com/shockrah/freechat#readme", + "dependencies": { + "jsonwebtoken": "^8.5.1", + "ws": "^7.4.4" + } +} diff --git a/rtc-server/peers.js b/rtc-server/peers.js new file mode 100644 index 0000000..e56680d --- /dev/null +++ b/rtc-server/peers.js @@ -0,0 +1,69 @@ +class Event { + /** + * @param raw {String} + * + */ + constructor(raw) { + this._raw = raw + let obj = JSON.parse(raw) + this.type = obj['type'] + if(this.type == 'message') { + this.message = obj['message'] + } else if (this.type == 'channel') { + this.channel = obj['channel'] + } + } +} + +class Peer { + /* + * @param type {String} + * @param channel {String} + */ + constructor(type, channel) { + this.type = type + this.channel = channel + } +} + +exports.PeerMap = class { + /* + * @field users Map + * @field server Map + */ + constructor() { + // Map of sockets -> Peer + this.users = {} + this.server = {} + } + + /** + * @params message {String|JSON} Used for emitting server messages to user peers + */ + notify(message) { + let e_type = new Event(message) + if(e_type.type) { + for(const conn of Object.keys(this.users)) { + } + } else { + console.log('[WSS] Invalid event type given from server') + } + } + + // As the names imply these methods help maintain the peer map + add_server(socket) { + this.server[socket] = new Peer('server', null) + } + remove_server(socket) { + delete this.server[socket] + } + add_user(socket, channel) { + this.users[socket] = new Peer('user', channel) + } + remove_user(socket) { + delete this.user[socket] + } + +} + + diff --git a/rtc-server/src/auth.rs b/rtc-server/src/auth.rs deleted file mode 100644 index 3d52a34..0000000 --- a/rtc-server/src/auth.rs +++ /dev/null @@ -1,87 +0,0 @@ -use std::time::{SystemTime, UNIX_EPOCH}; -use serde::{Serialize, Deserialize, de::DeserializeOwned}; -use jsonwebtoken::{decode, DecodingKey}; -use jsonwebtoken::{Validation, Algorithm}; -use lazy_static::lazy_static; - -use crate::peers::ConnectionType; - -lazy_static! { - // This hmac is the key we use to sign ONLY API <-> WSS communications - static ref API_HMAC_SECRET: Vec = { - std::fs::read("wss-hmac.secret").expect("[WSS FATAL] Couldn't get WSS HMAC secret") - }; - - static ref USER_HMAC: Vec = { - std::fs::read("hmac.secret").expect("[WSS FATAL] no user hmac.secret found") - }; -} - - -trait Claims { - /// Returns the unix timestamp in ms 0 if this field does not exist - fn time(&self) -> i64; - /// Returns user id of if one is present - fn sub(&self) -> Option; -} - -#[derive(Deserialize, Serialize)] -struct APIClaim; - -impl Claims for APIClaim { - fn time(&self) -> i64 { 0 } - fn sub(&self) -> Option { None } -} - - -#[derive(Debug, Serialize, Deserialize)] -struct UserClaim { - sub: u64, // user id - exp: i64, // expiry date - cookie: String, // unique cookie value -} - -impl Claims for UserClaim { - fn time(&self) -> i64 { self.exp } - fn sub(&self) -> Option { Some(self.sub) } -} - - - -fn verify_token(token: &str) -> Option where - T: DeserializeOwned + Claims -{ - let dk = DecodingKey::from_secret(&USER_HMAC); - let algo = Algorithm::HS512; - - if let Ok(decoded) = decode::(token, &dk, &Validation::new(algo)) { - let time = decoded.claims.time(); - let now = SystemTime::now() - .duration_since(UNIX_EPOCH) - .expect("[WSS UMMM] Couldn't get unix time") - .as_millis() as i64; - let active = now < time; - match active { - true => Some(ConnectionType::User), - false => None - } - } - // Only fallback to checking for a server connection since this basically never happens - // compared to the user connection branch - else { - let dk = DecodingKey::from_secret(&API_HMAC_SECRET); - if let Ok(_decoded) = decode::(token, &dk, &Validation::new(algo)) { - Some(ConnectionType::Server) - } else { - None - } - } -} - -pub fn verify(token: &str) -> Option { - match verify_token::(token) { - Some(user) => Some(user), - None => verify_token::(token) - } -} - diff --git a/rtc-server/src/main.rs b/rtc-server/src/main.rs deleted file mode 100644 index 7251458..0000000 --- a/rtc-server/src/main.rs +++ /dev/null @@ -1,133 +0,0 @@ -mod auth; -mod peers; - -use std::sync::{Arc, Mutex}; -use std::collections::HashMap; - -use futures::StreamExt; -use futures::channel::mpsc::unbounded; -use futures::future; -use futures::pin_mut; -use futures::stream::TryStreamExt; - -use tokio_tungstenite as tokio_ws; -use tokio_ws::tungstenite::handshake::server::ErrorResponse; -use tokio_ws::tungstenite::http::{Response, Request}; -use tokio::net::{TcpListener, TcpStream}; - -use clap::{Arg, App}; - -use peers::{Peer, Channel, PeerMap, ConnectionType}; - -macro_rules! header_err { - ($s:literal) => { - Err(ErrorResponse::new(Some($s.to_string()))) - } -} - -#[tokio::main] -async fn main() -> Result<(), std::io::Error> { - let matches = App::new("Freechat RTC Websocket Server") - .version("1.0") - .author("shockrah") - .about("Enables RTC communication to authorized client applications") - .arg(Arg::with_name("port") - .short("p") - .long("port") - .value_name("PORT") - .takes_value(true)) - .get_matches(); - - let connections: PeerMap = Arc::new(Mutex::new(HashMap::new())); - - // Websocket server initialization - let wsaddr = match matches.value_of("port") { - Some(pval) => { - let port = pval.parse::().unwrap(); - format!("127.0.0.1:{}", port) - }, - None => format!("127.0.0.1:5648") - }; - let wssocket = TcpListener::bind(&wsaddr).await?; - println!("[INFO] WSS Listening on {}", wsaddr); - - while let Ok((stream, _)) = wssocket.accept().await { - tokio::spawn(handle_connections(stream, connections.clone())); - } - - Ok(()) -} - - - -async fn handle_connections(stream: TcpStream, peermap: PeerMap) { - let addr = stream.peer_addr().expect("[ERROR] Peer address not found"); - - // NOTE: this call underneath actually blocks which blows but it will do for now - // NOTE: find some kind of way of doing async callbacks here so that we can scale - - let mut domain: Option = None; - let ws_stream = tokio_ws::accept_hdr_async(stream, - |request:&Request<()>, response:Response<()>| -> Result, ErrorResponse> { - - domain = match request.uri().path() { - "/voice" => Some(Channel::Voice), - "/text" => Some(Channel::Text), - _ => None - }; - - println!("[DEBUG] Incoming headers {:?}", request.headers()); - let entry = request.headers() - .iter().find(|(name, _)| name.as_str() == "jwt"); - - if let Some((_, jwt)) = entry { - match auth::verify(jwt.to_str().expect("Unable to convert header to str")) { - Some(_conn_type) => Ok(response), - None => panic!("[WSS] Unable to verify connection") - } - } else { - header_err!("JWT not found in header") - } - }).await; - - let ws_stream = match ws_stream { - Ok(stream) => { - println!("[WSS INFO] New connection established"); - stream - } - Err(e) => panic!(format!("[WSS ERROR] Could not finish handshake: {}", e)) - }; - - - let (tx, rx) = unbounded(); // split the peer's write and read streams - let peer = Peer::new(tx, domain); // safe as the handshake fails with None domain - println!("{:?}", peer); - - // Add the new peer - peermap.lock().unwrap().insert(addr, peer); - - let (write, read) = ws_stream.split(); - - let broadcast_incoming = read.try_for_each(|msg| { - let peers = peermap.lock().unwrap(); - // TODO: restructure this so that the server connection - // never gets rans over to avoid this meme of a .collect - // collect everyone except the server connection - let recipients = peers - .iter().filter(|(p_addr, meta)| p_addr != &&addr || meta.conn == ConnectionType::Server) - .map(|(_, sink)| sink); - - for recv in recipients { - println!("{:?}", recv); - recv.try_send_text(msg.clone()); - } - future::ok(()) - }); - - // magic - let forward = rx.map(Ok).forward(write); - pin_mut!(broadcast_incoming, forward); - future::select(broadcast_incoming, forward).await; - println!("{} dc'd", &addr); - peermap.lock().unwrap().remove(&addr); -} diff --git a/rtc-server/src/peers.rs b/rtc-server/src/peers.rs deleted file mode 100644 index bf260cf..0000000 --- a/rtc-server/src/peers.rs +++ /dev/null @@ -1,51 +0,0 @@ -use std::sync::{Arc, Mutex}; -use std::collections::HashMap; -use std::net::SocketAddr; -use futures::channel::mpsc::UnboundedSender; - -use tokio_tungstenite as tokio_ws; -use tokio_ws::tungstenite::Message; - - -pub type PeerMap = Arc>>; -type Tx = UnboundedSender; - -#[derive(Debug, PartialEq)] -pub enum ConnectionType { - User, - Server -} - -#[derive(Clone, Debug, PartialEq)] -pub enum Channel { - Text, - Voice, -} - -#[derive(Debug)] -pub struct Peer { - transfer: Tx, - channel: Option, - pub conn: ConnectionType -} - -impl Peer { - pub fn new(transfer: Tx, channel: Option) -> Self { - Self { - transfer, - channel: channel.clone(), - conn: match channel { - Some(_) => ConnectionType::User, - _ => ConnectionType::Server - } - } - } - - pub fn try_send_text(&self, msg: Message) { - if self.channel == Some(Channel::Text) { - self.transfer.unbounded_send(msg) - .expect("[WSS-COMM-ERROR] Unable to notify peer"); - } - } -} -