use crate::db::community::Community; use crate::Settings; use actix_web::web; use actix_web::web::Query; use actix_web::HttpResponse; use diesel::r2d2::{ConnectionManager, Pool}; use diesel::PgConnection; use regex::Regex; use serde::Deserialize; use serde_json::json; #[derive(Deserialize)] pub struct Params { resource: String, } pub fn config(cfg: &mut web::ServiceConfig) { if Settings::get().federation.enabled { cfg.route( ".well-known/webfinger", web::get().to(get_webfinger_response), ); } } lazy_static! { static ref WEBFINGER_COMMUNITY_REGEX: Regex = Regex::new(&format!( "^group:([a-z0-9_]{{3, 20}})@{}$", Settings::get().hostname )) .unwrap(); } /// Responds to webfinger requests of the following format. There isn't any real documentation for /// this, but it described in this blog post: /// https://mastodon.social/.well-known/webfinger?resource=acct:gargron@mastodon.social /// /// You can also view the webfinger response that Mastodon sends: /// https://radical.town/.well-known/webfinger?resource=acct:felix@radical.town async fn get_webfinger_response( info: Query, db: web::Data>>, ) -> Result { let res = web::block(move || { let conn = db.get()?; let regex_parsed = WEBFINGER_COMMUNITY_REGEX .captures(&info.resource) .map(|c| c.get(1)); // TODO: replace this with .flatten() once we are running rust 1.40 let regex_parsed_flattened = match regex_parsed { Some(s) => s, None => None, }; let community_name = match regex_parsed_flattened { Some(c) => c.as_str(), None => return Err(format_err!("not_found")), }; // Make sure the requested community exists. let community = match Community::read_from_name(&conn, community_name.to_string()) { Ok(o) => o, Err(_) => return Err(format_err!("not_found")), }; let community_url = community.get_url(); Ok(json!({ "subject": info.resource, "aliases": [ community_url, ], "links": [ { "rel": "http://webfinger.net/rel/profile-page", "type": "text/html", "href": community.get_url(), }, { "rel": "self", "type": "application/activity+json", // Yes this is correct, this link doesn't include the `.json` extension "href": community_url } // TODO: this also needs to return the subscribe link once that's implemented //{ // "rel": "http://ostatus.org/schema/1.0/subscribe", // "template": "https://my_instance.com/authorize_interaction?uri={uri}" //} ] })) }) .await .map(|json| HttpResponse::Ok().json(json)) .map_err(|_| HttpResponse::InternalServerError())?; Ok(res) }