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feat: webfinger resolution in fetcher

This commit is contained in:
əlemi 2024-05-13 01:48:32 +02:00
parent e11b972826
commit f2867e56e7
Signed by: alemi
GPG key ID: A4895B84D311642C

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@ -11,6 +11,8 @@ use super::{auth::HttpSignature, Context};
#[axum::async_trait]
pub trait Fetcher {
async fn webfinger(&self, user: &str, host: &str) -> crate::Result<String>;
async fn fetch_user(&self, id: &str) -> crate::Result<model::user::Model>;
async fn pull_user(&self, id: &str) -> crate::Result<model::user::Model>;
@ -81,6 +83,36 @@ pub trait Fetcher {
#[axum::async_trait]
impl Fetcher for Context {
async fn webfinger(&self, user: &str, host: &str) -> crate::Result<String> {
let subject = format!("acct:{user}@{host}");
let webfinger_uri = format!("https://{host}/.well-known/webfinger?resource={subject}");
let resource = Self::request(
Method::GET, &webfinger_uri, None, &self.base(), &self.app().private_key, self.domain(),
)
.await?
.json::<jrd::JsonResourceDescriptor>()
.await?;
if resource.subject != subject {
return Err(UpubError::unprocessable());
}
for link in resource.links {
if link.rel == "self" {
if let Some(href) = link.href {
return Ok(href);
}
}
}
if let Some(alias) = resource.aliases.into_iter().next() {
return Ok(alias);
}
Err(UpubError::not_found())
}
async fn fetch_user(&self, id: &str) -> crate::Result<model::user::Model> {
if let Some(x) = model::user::Entity::find_by_id(id).one(self.db()).await? {
return Ok(x); // already in db, easy