// Copyright (C) 2018 Vincent Ambo // // This file is part of Converse. // // Converse is free software: you can redistribute it and/or modify it // under the terms of the GNU Affero General Public License as // published by the Free Software Foundation, either version 3 of the // License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Affero General Public License for more details. // // You should have received a copy of the GNU Affero General Public // License along with this program. If not, see // . #[macro_use] extern crate diesel; #[macro_use] extern crate log; #[macro_use] extern crate serde_derive; #[macro_use] extern crate failure; extern crate actix; extern crate actix_web; extern crate chrono; extern crate comrak; extern crate env_logger; extern crate futures; extern crate hyper; extern crate md5; extern crate r2d2; extern crate rand; extern crate reqwest; extern crate serde; extern crate serde_json; extern crate tera; extern crate tokio; extern crate tokio_timer; extern crate url; extern crate url_serde; /// Simple macro used to reduce boilerplate when defining actor /// message types. macro_rules! message { ( $t:ty, $r:ty ) => { impl Message for $t { type Result = $r; } } } pub mod db; pub mod errors; pub mod handlers; pub mod models; pub mod oidc; pub mod render; pub mod schema; use actix::prelude::*; use actix_web::*; use actix_web::http::Method; use actix_web::middleware::{Logger, SessionStorage, CookieSessionBackend}; use db::*; use diesel::pg::PgConnection; use diesel::r2d2::{ConnectionManager, Pool}; use handlers::*; use oidc::OidcExecutor; use rand::{OsRng, Rng}; use render::Renderer; use std::env; use tera::Tera; fn config(name: &str) -> String { env::var(name).expect(&format!("{} must be set", name)) } fn config_default(name: &str, default: &str) -> String { env::var(name).unwrap_or(default.into()) } fn start_db_executor() -> Addr { info!("Initialising database connection pool ..."); let db_url = config("DATABASE_URL"); let manager = ConnectionManager::::new(db_url); let pool = Pool::builder().build(manager).expect("Failed to initialise DB pool"); SyncArbiter::start(2, move || DbExecutor(pool.clone())) } fn schedule_search_refresh(db: Addr) { use tokio::prelude::*; use tokio::timer::Interval; use std::time::{Duration, Instant}; use std::thread; let task = Interval::new(Instant::now(), Duration::from_secs(60)) .from_err() .for_each(move |_| db.send(db::RefreshSearchView).flatten()) .map_err(|err| error!("Error while updating search view: {}", err)); thread::spawn(|| tokio::run(task)); } fn start_oidc_executor(base_url: &str) -> Addr { info!("Initialising OIDC integration ..."); let oidc_url = config("OIDC_DISCOVERY_URL"); let oidc_config = oidc::load_oidc(&oidc_url) .expect("Failed to retrieve OIDC discovery document"); let oidc = oidc::OidcExecutor { oidc_config, client_id: config("OIDC_CLIENT_ID"), client_secret: config("OIDC_CLIENT_SECRET"), redirect_uri: format!("{}/oidc/callback", base_url), }; oidc.start() } fn start_renderer() -> Addr { info!("Compiling templates ..."); let mut tera: Tera = Default::default(); // Include template strings into the binary instead of being // location-dependent. // Drawback is that template changes require recompilation ... tera.add_raw_templates(vec![ ("index.html", include_str!("../templates/index.html")), ("post.html", include_str!("../templates/post.html")), ("search.html", include_str!("../templates/search.html")), ("thread.html", include_str!("../templates/thread.html")), ]).expect("Could not compile templates"); let comrak = comrak::ComrakOptions{ github_pre_lang: true, ext_strikethrough: true, ext_table: true, ext_autolink: true, ext_tasklist: true, ext_footnotes: true, ext_tagfilter: true, ..Default::default() }; Renderer{ tera, comrak }.start() } fn gen_session_key() -> [u8; 64] { let mut key_bytes = [0; 64]; let mut rng = OsRng::new() .expect("Failed to retrieve RNG for key generation"); rng.fill_bytes(&mut key_bytes); key_bytes } fn start_http_server(base_url: String, db_addr: Addr, oidc_addr: Addr, renderer_addr: Addr) { info!("Initialising HTTP server ..."); let bind_host = config_default("CONVERSE_BIND_HOST", "127.0.0.1:4567"); let key = gen_session_key(); let require_login = config_default("REQUIRE_LOGIN", "true".into()) == "true"; server::new(move || { let state = AppState { db: db_addr.clone(), oidc: oidc_addr.clone(), renderer: renderer_addr.clone(), }; let sessions = SessionStorage::new( CookieSessionBackend::signed(&key) .secure(base_url.starts_with("https"))); let app = App::with_state(state) .middleware(Logger::default()) .middleware(sessions) .resource("/", |r| r.method(Method::GET).with(forum_index)) .resource("/thread/new", |r| r.method(Method::GET).with(new_thread)) .resource("/thread/submit", |r| r.method(Method::POST).with3(submit_thread)) .resource("/thread/reply", |r| r.method(Method::POST).with3(reply_thread)) .resource("/thread/{id}", |r| r.method(Method::GET).with3(forum_thread)) .resource("/post/{id}/edit", |r| r.method(Method::GET).with3(edit_form)) .resource("/post/edit", |r| r.method(Method::POST).with3(edit_post)) .resource("/search", |r| r.method(Method::GET).with2(search_forum)) .resource("/oidc/login", |r| r.method(Method::GET).with(login)) .resource("/oidc/callback", |r| r.method(Method::POST).with3(callback)); if require_login { app.middleware(RequireLogin) } else { app }}) .bind(&bind_host).expect(&format!("Could not bind on '{}'", bind_host)) .start(); } fn main() { env_logger::init(); info!("Welcome to Converse! Hold on tight while we're getting ready."); let sys = actix::System::new("converse"); let base_url = config("BASE_URL"); let db_addr = start_db_executor(); let oidc_addr = start_oidc_executor(&base_url); let renderer_addr = start_renderer(); schedule_search_refresh(db_addr.clone()); start_http_server(base_url, db_addr, oidc_addr, renderer_addr); sys.run(); }