actix/
actix.rs

1use std::net::{Ipv4Addr, SocketAddr};
2
3use actix_web::{get, App, HttpServer};
4use color_eyre::{
5    eyre::{eyre, Context},
6    Result,
7};
8use rustls::ServerConfig;
9use tracing::{info, level_filters::LevelFilter};
10use webfinger_rs::{Link, Rel, WebFingerRequest, WebFingerResponse, WELL_KNOWN_PATH};
11
12const SUBJECT: &str = "acct:carol@localhost";
13
14#[actix_web::main]
15async fn main() -> Result<()> {
16    color_eyre::install()?;
17    let env_filter = tracing_subscriber::EnvFilter::builder()
18        .with_default_directive(LevelFilter::INFO.into())
19        .from_env_lossy();
20    tracing_subscriber::fmt().with_env_filter(env_filter).init();
21
22    let addrs = SocketAddr::new(Ipv4Addr::LOCALHOST.into(), 3000);
23    let config = tls_config()?;
24    let server =
25        HttpServer::new(|| App::new().service(webfinger)).bind_rustls_0_23(addrs, config)?;
26    info!("Listening at https://{addrs}{WELL_KNOWN_PATH}?resource={SUBJECT}");
27    server.run().await?;
28    Ok(())
29}
30
31fn tls_config() -> Result<ServerConfig> {
32    let self_signed_cert = rcgen::generate_simple_self_signed(vec!["localhost".to_string()])
33        .wrap_err("failed to generate self signed certificat for localhost")?;
34    let cert_chain = self_signed_cert.cert.into();
35    let key_der = self_signed_cert
36        .key_pair
37        .serialize_der()
38        .try_into()
39        .map_err(|s: &str| eyre!(s))?;
40    // self_signed_cert.cert.
41    ServerConfig::builder()
42        .with_no_client_auth()
43        .with_single_cert(vec![cert_chain], key_der)
44        .wrap_err("failed to create tls config")
45}
46
47#[get("/.well-known/webfinger")]
48async fn webfinger(request: WebFingerRequest) -> actix_web::Result<WebFingerResponse> {
49    info!("fetching webfinger resource: {:?}", request);
50    let subject = request.resource.to_string();
51    if subject != SUBJECT {
52        let message = format!("{subject} does not exist");
53        return Err(actix_web::error::ErrorNotFound(message))?;
54    }
55    let rel = Rel::new("http://webfinger.net/rel/profile-page");
56    let response = if request.rels.is_empty() || request.rels.contains(&rel) {
57        let link = Link::builder(rel).href(format!("https://example.com/profile/{subject}"));
58        WebFingerResponse::builder(subject).link(link).build()
59    } else {
60        WebFingerResponse::builder(subject).build()
61    };
62    Ok(response)
63}
actix/actix.rs

actix/
actix.rs
