lemmy/server/src/routes/webfinger.rs
andor0 b6411aba7a
Migrate from failure to anyhow and thiserror (#1042)
* Migrate from failure to anyhow and thiserror

* Replace 'format_err!' to 'anyhow!'
2020-08-01 14:04:42 +00:00

103 lines
3.3 KiB
Rust

use crate::{blocking, routes::DbPoolParam, LemmyError};
use actix_web::{error::ErrorBadRequest, web::Query, *};
use anyhow::anyhow;
use lemmy_db::{community::Community, user::User_};
use lemmy_utils::{settings::Settings, WEBFINGER_COMMUNITY_REGEX, WEBFINGER_USER_REGEX};
use serde::{Deserialize, Serialize};
#[derive(Deserialize)]
pub struct Params {
resource: String,
}
#[derive(Serialize, Deserialize, Debug)]
pub struct WebFingerResponse {
pub subject: String,
pub aliases: Vec<String>,
pub links: Vec<WebFingerLink>,
}
#[derive(Serialize, Deserialize, Debug)]
pub struct WebFingerLink {
pub rel: Option<String>,
#[serde(rename(serialize = "type", deserialize = "type"))]
pub type_: Option<String>,
pub href: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub template: Option<String>,
}
pub fn config(cfg: &mut web::ServiceConfig) {
if Settings::get().federation.enabled {
cfg.route(
".well-known/webfinger",
web::get().to(get_webfinger_response),
);
}
}
/// Responds to webfinger requests of the following format. There isn't any real documentation for
/// this, but it described in this blog post:
/// https://mastodon.social/.well-known/webfinger?resource=acct:gargron@mastodon.social
///
/// You can also view the webfinger response that Mastodon sends:
/// https://radical.town/.well-known/webfinger?resource=acct:felix@radical.town
async fn get_webfinger_response(
info: Query<Params>,
db: DbPoolParam,
) -> Result<HttpResponse, Error> {
let community_regex_parsed = WEBFINGER_COMMUNITY_REGEX
.captures(&info.resource)
.map(|c| c.get(1))
.flatten();
let user_regex_parsed = WEBFINGER_USER_REGEX
.captures(&info.resource)
.map(|c| c.get(1))
.flatten();
let url = if let Some(community_name) = community_regex_parsed {
let community_name = community_name.as_str().to_owned();
// Make sure the requested community exists.
blocking(&db, move |conn| {
Community::read_from_name(conn, &community_name)
})
.await?
.map_err(|_| ErrorBadRequest(LemmyError::from(anyhow!("not_found"))))?
.actor_id
} else if let Some(user_name) = user_regex_parsed {
let user_name = user_name.as_str().to_owned();
// Make sure the requested user exists.
blocking(&db, move |conn| User_::read_from_name(conn, &user_name))
.await?
.map_err(|_| ErrorBadRequest(LemmyError::from(anyhow!("not_found"))))?
.actor_id
} else {
return Err(ErrorBadRequest(LemmyError::from(anyhow!("not_found"))));
};
let json = WebFingerResponse {
subject: info.resource.to_owned(),
aliases: vec![url.to_owned()],
links: vec![
WebFingerLink {
rel: Some("http://webfinger.net/rel/profile-page".to_string()),
type_: Some("text/html".to_string()),
href: Some(url.to_owned()),
template: None,
},
WebFingerLink {
rel: Some("self".to_string()),
type_: Some("application/activity+json".to_string()),
href: Some(url),
template: None,
}, // TODO: this also needs to return the subscribe link once that's implemented
//{
// "rel": "http://ostatus.org/schema/1.0/subscribe",
// "template": "https://my_instance.com/authorize_interaction?uri={uri}"
//}
],
};
Ok(HttpResponse::Ok().json(json))
}