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96 lines
3 KiB
Rust
96 lines
3 KiB
Rust
use actix_web::{error::ErrorBadRequest, web::Query, *};
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use anyhow::anyhow;
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use lemmy_db_queries::source::{community::Community_, user::User};
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use lemmy_db_schema::source::{community::Community, user::User_};
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use lemmy_structs::{blocking, WebFingerLink, WebFingerResponse};
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use lemmy_utils::{
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settings::Settings,
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LemmyError,
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WEBFINGER_COMMUNITY_REGEX,
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WEBFINGER_USER_REGEX,
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};
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use lemmy_websocket::LemmyContext;
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use serde::Deserialize;
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#[derive(Deserialize)]
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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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/// 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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async fn get_webfinger_response(
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info: Query<Params>,
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context: web::Data<LemmyContext>,
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) -> Result<HttpResponse, Error> {
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let community_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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.flatten();
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let user_regex_parsed = WEBFINGER_USER_REGEX
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.captures(&info.resource)
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.map(|c| c.get(1))
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.flatten();
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let url = if let Some(community_name) = community_regex_parsed {
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let community_name = community_name.as_str().to_owned();
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// Make sure the requested community exists.
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blocking(context.pool(), move |conn| {
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Community::read_from_name(conn, &community_name)
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})
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.await?
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.map_err(|_| ErrorBadRequest(LemmyError::from(anyhow!("not_found"))))?
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.actor_id
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} else if let Some(user_name) = user_regex_parsed {
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let user_name = user_name.as_str().to_owned();
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// Make sure the requested user exists.
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blocking(context.pool(), move |conn| {
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User_::read_from_name(conn, &user_name)
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})
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.await?
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.map_err(|_| ErrorBadRequest(LemmyError::from(anyhow!("not_found"))))?
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.actor_id
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} else {
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return Err(ErrorBadRequest(LemmyError::from(anyhow!("not_found"))));
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};
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let json = WebFingerResponse {
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subject: info.resource.to_owned(),
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aliases: vec![url.to_owned()],
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links: vec![
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WebFingerLink {
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rel: Some("http://webfinger.net/rel/profile-page".to_string()),
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type_: Some("text/html".to_string()),
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href: Some(url.to_owned()),
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template: None,
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},
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WebFingerLink {
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rel: Some("self".to_string()),
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type_: Some("application/activity+json".to_string()),
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href: Some(url),
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template: None,
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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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Ok(HttpResponse::Ok().json(json))
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}
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