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/*
This file is part of keks-meet (https://codeberg.org/metamuffin/keks-meet)
which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
Copyright (C) 2023 metamuffin <metamuffin.org>
*/
#![feature(lazy_cell)]
pub mod assets;
pub mod config;
pub mod idgen;
pub mod logic;
pub mod protocol;
use crate::protocol::ClientboundPacket;
use assets::css;
use config::{AppearanceConfig, Config};
use futures_util::{SinkExt, StreamExt, TryFutureExt};
use hyper::{header, StatusCode};
use listenfd::ListenFd;
use log::{debug, error};
use logic::State;
use std::convert::Infallible;
use std::net::SocketAddr;
use std::str::FromStr;
use std::sync::Arc;
use tokio::sync::mpsc;
use warp::{
hyper::Server,
reply,
ws::{Message, WebSocket},
Filter, Rejection, Reply,
};
fn main() {
tokio::runtime::Builder::new_multi_thread()
.enable_all()
.build()
.unwrap()
.block_on(run());
}
async fn run() {
env_logger::init_from_env("LOG");
let config: Config = toml::from_str(include_str!("../../config/config.toml"))
.expect("client configuration invalid");
let client_config_json = serde_json::to_string(&config).unwrap();
let client_config_css = css_overrides(&config.appearance);
let state: _ = Arc::new(State::default());
let state: _ = warp::any().map(move || state.clone());
let signaling: _ = warp::path!("signaling")
.and(state)
.and(warp::ws())
.map(signaling_connect);
let index: _ = warp::path!().and(s_file!("client-web/public/start.html", "text/html"));
let favicon: _ = warp::path!("favicon.ico").and(s_file!("client-web/public/favicon.ico", "image/avif"));
let room: _ = warp::path!("room").and(s_file!("client-web/public/app.html", "text/html"));
let assets: _ = warp::path("assets").and(s_asset_dir!());
let sw_script: _ = warp::path("sw.js").and(s_file!(
"client-web/public/assets/sw.js",
"application/javascript"
));
let client_config: _ = warp::path!("config.json").map(move || {
warp::reply::with_header(
client_config_json.clone(),
"content-type",
"application/json",
)
});
let client_config_css: _ = warp::path!("overrides.css").map(move || {
warp::reply::with_header(client_config_css.clone(), "content-type", "text/css")
});
let css: _ = warp::path!("style.css")
.map(move || warp::reply::with_header(css(), "content-type", "text/css"));
let old_format_redirect: _ = warp::path!("room" / String).map(|rsecret| {
reply::with_header(
StatusCode::MOVED_PERMANENTLY,
header::LOCATION,
format!("/room#{rsecret}?warn_redirect=true"),
)
.into_response()
});
let version: _ = warp::path!("version").map(|| env!("CARGO_PKG_VERSION"));
let routes: _ = signaling
.or(assets
.or(room)
.or(index)
.or(client_config)
.or(version)
.or(css)
.or(favicon)
.or(sw_script)
.or(old_format_redirect)
.or(client_config_css)
.map(|r| {
warp::reply::with_header(
r,
"cache-control",
if cfg!(debug_assertions) {
"no-cache"
} else {
"max-age=1000000"
},
)
}))
.recover(handle_rejection)
.with(warp::log("keks-meet"))
.map(|r| warp::reply::with_header(r, "server", "keks-meet"));
// if listender fd is passed from the outside world, use it.
let mut listenfd = ListenFd::from_env();
let server = if let Some(l) = listenfd.take_tcp_listener(0).unwrap() {
Server::from_tcp(l).unwrap()
} else {
Server::bind(
&SocketAddr::from_str(&std::env::var("BIND").unwrap_or(String::from("127.0.0.1:8080")))
.unwrap(),
)
};
let service = warp::service(routes);
server
.serve(hyper::service::make_service_fn(|_| {
let service = service.clone();
async move { Ok::<_, Infallible>(service) }
}))
.await
.unwrap();
}
async fn handle_rejection(err: Rejection) -> Result<impl Reply, Infallible> {
let code = if err.is_not_found() {
StatusCode::NOT_FOUND
} else if let Some(_) = err.find::<warp::filters::body::BodyDeserializeError>() {
StatusCode::BAD_REQUEST
} else if let Some(_) = err.find::<warp::reject::MethodNotAllowed>() {
StatusCode::METHOD_NOT_ALLOWED
} else {
error!("unhandled rejection: {:?}", err);
StatusCode::INTERNAL_SERVER_ERROR
};
let json = warp::reply::html(format!(
"<!DOCTYPE html><html><head></head><body><pre>{}</pre></body></html>",
code.canonical_reason().unwrap_or("!?")
));
Ok(warp::reply::with_status(json, code))
}
fn signaling_connect(state: Arc<State>, ws: warp::ws::Ws) -> impl Reply {
async fn inner(sock: WebSocket, state: Arc<State>) {
debug!("ws upgrade");
let (mut user_ws_tx, user_ws_rx) = sock.split();
let (tx, mut rx) = mpsc::channel::<ClientboundPacket>(64);
tokio::task::spawn(async move {
while let Some(packet) = rx.recv().await {
debug!(" -> {packet:?}");
user_ws_tx
.send(Message::text(serde_json::to_string(&packet).unwrap()))
.unwrap_or_else(|e| {
eprintln!("websocket send error: {}", e);
})
.await;
}
});
state.connect(user_ws_rx, tx).await;
}
ws.on_upgrade(move |sock| inner(sock, state))
}
fn css_overrides(
AppearanceConfig {
accent,
accent_light,
accent_dark,
background,
background_dark,
background_light,
}: &AppearanceConfig,
) -> String {
format!(
r#":root {{
--bg: {background};
--bg-dark: {background_dark};
--bg-light: {background_light};
--ac: {accent};
--ac-dark: {accent_dark};
--ac-dark-transparent: {accent_dark}c9;
--ac-light: {accent_light};
}}
"#
)
}
|
