lemmy/crates/apub/src/fetcher/mod.rs

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1.8 KiB
Rust
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use activitypub_federation::{
config::Data,
fetch::webfinger::webfinger_resolve_actor,
traits::{Actor, Object},
};
use diesel::NotFound;
use itertools::Itertools;
use lemmy_api_common::context::LemmyContext;
use lemmy_db_schema::traits::ApubActor;
use lemmy_db_views::structs::LocalUserView;
use lemmy_utils::error::LemmyError;
pub mod post_or_comment;
2021-03-11 04:43:11 +00:00
pub mod search;
pub mod user_or_community;
/// Resolve actor identifier like `!news@example.com` to user or community object.
///
/// In case the requesting user is logged in and the object was not found locally, it is attempted
/// to fetch via webfinger from the original instance.
#[tracing::instrument(skip_all)]
pub async fn resolve_actor_identifier<ActorType, DbActor>(
identifier: &str,
context: &Data<LemmyContext>,
local_user_view: &Option<LocalUserView>,
include_deleted: bool,
) -> Result<ActorType, LemmyError>
where
ActorType: Object<DataType = LemmyContext, Error = LemmyError>
+ Object
+ Actor
+ From<DbActor>
+ Send
+ 'static,
for<'de2> <ActorType as Object>::Kind: serde::Deserialize<'de2>,
DbActor: ApubActor + Send + 'static,
{
// remote actor
if identifier.contains('@') {
let (name, domain) = identifier
.splitn(2, '@')
.collect_tuple()
.expect("invalid query");
let actor = DbActor::read_from_name_and_domain(context.pool(), name, domain).await;
if actor.is_ok() {
Ok(actor?.into())
} else if local_user_view.is_some() {
// Fetch the actor from its home instance using webfinger
let actor: ActorType = webfinger_resolve_actor(identifier, context).await?;
Ok(actor)
} else {
Err(NotFound.into())
}
}
// local actor
else {
let identifier = identifier.to_string();
Ok(
DbActor::read_from_name(context.pool(), &identifier, include_deleted)
.await?
.into(),
)
}
}