1 use actix_web::{error::ErrorBadRequest, web::Query, *};
3 use lemmy_api_common::blocking;
4 use lemmy_apub_lib::webfinger::{WebfingerLink, WebfingerResponse};
5 use lemmy_db_schema::source::{community::Community, person::Person};
6 use lemmy_utils::{settings::structs::Settings, LemmyError};
7 use lemmy_websocket::LemmyContext;
8 use serde::Deserialize;
10 #[derive(Deserialize)]
15 pub fn config(cfg: &mut web::ServiceConfig, settings: &Settings) {
16 if settings.federation.enabled {
18 ".well-known/webfinger",
19 web::get().to(get_webfinger_response),
24 /// Responds to webfinger requests of the following format. There isn't any real documentation for
25 /// this, but it described in this blog post:
26 /// https://mastodon.social/.well-known/webfinger?resource=acct:gargron@mastodon.social
28 /// You can also view the webfinger response that Mastodon sends:
29 /// https://radical.town/.well-known/webfinger?resource=acct:felix@radical.town
30 async fn get_webfinger_response(
32 context: web::Data<LemmyContext>,
33 ) -> Result<HttpResponse, Error> {
34 let community_regex_parsed = context
36 .webfinger_community_regex()
37 .captures(&info.resource)
41 let username_regex_parsed = context
43 .webfinger_username_regex()
44 .captures(&info.resource)
48 let url = if let Some(community_name) = community_regex_parsed {
49 let community_name = community_name.as_str().to_owned();
50 // Make sure the requested community exists.
51 blocking(context.pool(), move |conn| {
52 Community::read_from_name(conn, &community_name)
55 .map_err(|_| ErrorBadRequest(LemmyError::from(anyhow!("not_found"))))?
57 } else if let Some(person_name) = username_regex_parsed {
58 let person_name = person_name.as_str().to_owned();
59 // Make sure the requested person exists.
60 blocking(context.pool(), move |conn| {
61 Person::find_by_name(conn, &person_name)
64 .map_err(|_| ErrorBadRequest(LemmyError::from(anyhow!("not_found"))))?
67 return Err(ErrorBadRequest(LemmyError::from(anyhow!("not_found"))));
70 let json = WebfingerResponse {
71 subject: info.resource.to_owned(),
72 aliases: vec![url.to_owned().into()],
75 rel: Some("http://webfinger.net/rel/profile-page".to_string()),
76 type_: Some("text/html".to_string()),
77 href: Some(url.to_owned().into()),
81 rel: Some("self".to_string()),
82 type_: Some("application/activity+json".to_string()),
83 href: Some(url.into()),
85 }, // TODO: this also needs to return the subscribe link once that's implemented
87 // "rel": "http://ostatus.org/schema/1.0/subscribe",
88 // "template": "https://my_instance.com/authorize_interaction?uri={uri}"
93 Ok(HttpResponse::Ok().json(json))