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_queries::source::{community::Community_, person::Person_};
6 use lemmy_db_schema::source::{community::Community, person::Person};
8 settings::structs::Settings,
10 WEBFINGER_COMMUNITY_REGEX,
11 WEBFINGER_USERNAME_REGEX,
13 use lemmy_websocket::LemmyContext;
14 use serde::Deserialize;
16 #[derive(Deserialize)]
21 pub fn config(cfg: &mut web::ServiceConfig) {
22 if Settings::get().federation.enabled {
24 ".well-known/webfinger",
25 web::get().to(get_webfinger_response),
30 /// Responds to webfinger requests of the following format. There isn't any real documentation for
31 /// this, but it described in this blog post:
32 /// https://mastodon.social/.well-known/webfinger?resource=acct:gargron@mastodon.social
34 /// You can also view the webfinger response that Mastodon sends:
35 /// https://radical.town/.well-known/webfinger?resource=acct:felix@radical.town
36 async fn get_webfinger_response(
38 context: web::Data<LemmyContext>,
39 ) -> Result<HttpResponse, Error> {
40 let community_regex_parsed = WEBFINGER_COMMUNITY_REGEX
41 .captures(&info.resource)
45 let username_regex_parsed = WEBFINGER_USERNAME_REGEX
46 .captures(&info.resource)
50 let url = if let Some(community_name) = community_regex_parsed {
51 let community_name = community_name.as_str().to_owned();
52 // Make sure the requested community exists.
53 blocking(context.pool(), move |conn| {
54 Community::read_from_name(conn, &community_name)
57 .map_err(|_| ErrorBadRequest(LemmyError::from(anyhow!("not_found"))))?
59 } else if let Some(person_name) = username_regex_parsed {
60 let person_name = person_name.as_str().to_owned();
61 // Make sure the requested person exists.
62 blocking(context.pool(), move |conn| {
63 Person::find_by_name(conn, &person_name)
66 .map_err(|_| ErrorBadRequest(LemmyError::from(anyhow!("not_found"))))?
69 return Err(ErrorBadRequest(LemmyError::from(anyhow!("not_found"))));
72 let json = WebfingerResponse {
73 subject: info.resource.to_owned(),
74 aliases: vec![url.to_owned().into()],
77 rel: Some("http://webfinger.net/rel/profile-page".to_string()),
78 type_: Some("text/html".to_string()),
79 href: Some(url.to_owned().into()),
83 rel: Some("self".to_string()),
84 type_: Some("application/activity+json".to_string()),
85 href: Some(url.into()),
87 }, // TODO: this also needs to return the subscribe link once that's implemented
89 // "rel": "http://ostatus.org/schema/1.0/subscribe",
90 // "template": "https://my_instance.com/authorize_interaction?uri={uri}"
95 Ok(HttpResponse::Ok().json(json))