1 use actix_web::{error::ErrorBadRequest, web::Query, *};
3 use lemmy_api_common::{blocking, WebFingerLink, WebFingerResponse};
4 use lemmy_db_queries::source::{community::Community_, person::Person_};
5 use lemmy_db_schema::source::{community::Community, person::Person};
7 settings::structs::Settings,
9 WEBFINGER_COMMUNITY_REGEX,
10 WEBFINGER_USERNAME_REGEX,
12 use lemmy_websocket::LemmyContext;
13 use serde::Deserialize;
15 #[derive(Deserialize)]
20 pub fn config(cfg: &mut web::ServiceConfig) {
21 if Settings::get().federation.enabled {
23 ".well-known/webfinger",
24 web::get().to(get_webfinger_response),
29 /// Responds to webfinger requests of the following format. There isn't any real documentation for
30 /// this, but it described in this blog post:
31 /// https://mastodon.social/.well-known/webfinger?resource=acct:gargron@mastodon.social
33 /// You can also view the webfinger response that Mastodon sends:
34 /// https://radical.town/.well-known/webfinger?resource=acct:felix@radical.town
35 async fn get_webfinger_response(
37 context: web::Data<LemmyContext>,
38 ) -> Result<HttpResponse, Error> {
39 let community_regex_parsed = WEBFINGER_COMMUNITY_REGEX
40 .captures(&info.resource)
44 let username_regex_parsed = WEBFINGER_USERNAME_REGEX
45 .captures(&info.resource)
49 let url = if let Some(community_name) = community_regex_parsed {
50 let community_name = community_name.as_str().to_owned();
51 // Make sure the requested community exists.
52 blocking(context.pool(), move |conn| {
53 Community::read_from_name(conn, &community_name)
56 .map_err(|_| ErrorBadRequest(LemmyError::from(anyhow!("not_found"))))?
58 } else if let Some(person_name) = username_regex_parsed {
59 let person_name = person_name.as_str().to_owned();
60 // Make sure the requested person exists.
61 blocking(context.pool(), move |conn| {
62 Person::find_by_name(conn, &person_name)
65 .map_err(|_| ErrorBadRequest(LemmyError::from(anyhow!("not_found"))))?
68 return Err(ErrorBadRequest(LemmyError::from(anyhow!("not_found"))));
71 let json = WebFingerResponse {
72 subject: info.resource.to_owned(),
73 aliases: vec![url.to_owned().into()],
76 rel: Some("http://webfinger.net/rel/profile-page".to_string()),
77 type_: Some("text/html".to_string()),
78 href: Some(url.to_owned().into()),
82 rel: Some("self".to_string()),
83 type_: Some("application/activity+json".to_string()),
84 href: Some(url.into()),
86 }, // TODO: this also needs to return the subscribe link once that's implemented
88 // "rel": "http://ostatus.org/schema/1.0/subscribe",
89 // "template": "https://my_instance.com/authorize_interaction?uri={uri}"
94 Ok(HttpResponse::Ok().json(json))