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