feat: AP webfinger

Cargo.lock

@@ -2091,6 +2091,7 @@ dependencies = [
  "url",
  "uuid",
  "vcpkg",
+ "webfinger",
 ]
 
 [[package]]
@@ -4173,6 +4174,16 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "webfinger"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f395336b42f1be22490390830ccfe7a735725eef086cd0574bf8759408ecb3af"
+dependencies = [
+ "reqwest 0.11.27",
+ "serde",
+]
+
 [[package]]
 name = "webpki-roots"
 version = "0.25.4"

Cargo.toml

@@ -34,6 +34,7 @@ serde_derive = "1.0.201"
 dotenv = "0.15.0"
 async-recursion = "1.1.1"
 base64-url = "3.0.0"
+webfinger = "0.5.1"
 
 [dependencies.sea-orm]
 version = "0.12.0"

src/http.rs

@@ -2,8 +2,13 @@ use crate::{
     database::StateHandle,
     entities::user,
     error::Error,
-    lysand::{self, conversion::receive_lysand_note},
+    lysand::{
+        self,
+        conversion::{db_user_from_url, receive_lysand_note},
+    },
     objects::person::{DbUser, PersonAcceptedActivities},
+    utils::generate_user_id,
+    API_DOMAIN, LYSAND_DOMAIN,
 };
 use activitypub_federation::{
     actix_web::{inbox::receive_activity, signing_actor},
@@ -18,6 +23,7 @@ use anyhow::anyhow;
 use serde::Deserialize;
 use tracing::info;
 use url::Url;
+use webfinger::resolve;
 
 pub fn listen(config: &FederationConfig<StateHandle>) -> Result<(), Error> {
     let hostname = config.domain();
@@ -101,9 +107,18 @@ pub async fn webfinger(
     data: Data<StateHandle>,
 ) -> Result<HttpResponse, Error> {
     let name = extract_webfinger_name(&query.resource, &data)?;
-    let db_user = data.read_user(name).await?;
+    let db_user = data.read_user(name.clone()).await;
+    let user;
+    if db_user.is_ok() {
+        user = db_user.unwrap();
+    } else {
+        let res = resolve("acct:".to_string() + name + "@" + &LYSAND_DOMAIN, true)
+            .await
+            .unwrap();
+        user = db_user_from_url(Url::parse(&res.subject)?).await?;
+    }
     Ok(HttpResponse::Ok().json(build_webfinger_response(
         query.resource.clone(),
-        Url::parse(&db_user.id)?,
+        generate_user_id(&API_DOMAIN, &user.id)?,
     )))
 }

src/lysand/http.rs

@@ -1,6 +1,6 @@
 use activitypub_federation::{
     fetch::{object_id::ObjectId, webfinger::webfinger_resolve_actor},
-    protocol::context::WithContext,
+    protocol::{context::WithContext, public_key::PublicKey},
     traits::Object,
     FEDERATION_CONTENT_TYPE,
 };
@@ -18,8 +18,8 @@ use crate::{
     error,
     lysand::conversion::{lysand_post_from_db, lysand_user_from_db},
     objects,
-    utils::{base_url_decode, generate_create_id},
-    Response, DB, FEDERATION_CONFIG,
+    utils::{base_url_decode, generate_create_id, generate_user_id},
+    Response, API_DOMAIN, DB, FEDERATION_CONFIG,
 };
 
 #[derive(serde::Deserialize)]
@@ -117,6 +117,41 @@ async fn fetch_post(
         .json(crate::objects::post::Note::from_db(&post)))
 }
 
+#[get("/apbridge/user/{user}")]
+async fn fetch_user(
+    path: web::Path<String>,
+    state: web::Data<State>,
+) -> actix_web::Result<HttpResponse, error::Error> {
+    let db = DB.get().unwrap();
+
+    let user = prelude::User::find()
+        .filter(post::Column::Id.eq(path.as_str()))
+        .one(db)
+        .await?;
+
+    let user = match user {
+        Some(user) => user,
+        None => return Ok(HttpResponse::NotFound().finish()),
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type(FEDERATION_CONTENT_TYPE)
+        .json(crate::objects::person::Person {
+            kind: Default::default(),
+            id: generate_user_id(&API_DOMAIN, &user.id)?.into(),
+            preferred_username: user.username.clone(),
+            name: user.name.clone(),
+            summary: user.summary.clone(),
+            url: Url::parse(user.url.as_str()).unwrap(),
+            inbox: Url::parse(user.inbox.as_str()).unwrap(),
+            public_key: PublicKey {
+                owner: Url::parse(user.url.as_str()).unwrap(),
+                public_key_pem: user.public_key,
+                id: format!("{}#main-key", Url::parse(user.url.as_str()).unwrap()),
+            },
+        }))
+}
+
 #[get("/apbridge/lysand/object/{post}")]
 async fn fetch_lysand_post(
     path: web::Path<String>,

src/main.rs

@@ -15,7 +15,7 @@ use clap::Parser;
 use database::Database;
 use entities::post;
 use http::{http_get_user, http_post_user_inbox, webfinger};
-use lysand::http::{create_activity, fetch_lysand_post, fetch_post, query_post};
+use lysand::http::{create_activity, fetch_lysand_post, fetch_post, fetch_user, query_post};
 use objects::person::DbUser;
 use sea_orm::{ActiveModelTrait, DatabaseConnection, Set};
 use serde::{Deserialize, Serialize};
@@ -259,6 +259,7 @@ async fn main() -> actix_web::Result<(), anyhow::Error> {
             .route("/.well-known/webfinger", web::get().to(webfinger))
             .service(index)
             .service(fetch_post)
+            .service(fetch_user)
             .service(create_activity)
             .service(query_post)
             .service(fetch_lysand_post)

src/objects/person.rs

@@ -71,14 +71,14 @@ impl DbUser {
 #[serde(rename_all = "camelCase")]
 pub struct Person {
     #[serde(rename = "type")]
-    kind: PersonType,
-    preferred_username: String,
-    name: String,
-    summary: Option<String>,
-    url: Url,
-    id: ObjectId<user::Model>,
-    inbox: Url,
-    public_key: PublicKey,
+    pub kind: PersonType,
+    pub preferred_username: String,
+    pub name: String,
+    pub summary: Option<String>,
+    pub url: Url,
+    pub id: ObjectId<user::Model>,
+    pub inbox: Url,
+    pub public_key: PublicKey,
 }
 
 #[async_trait::async_trait]