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https://github.com/LemmyNet/lemmy.git
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d075acce43
- Diesel ordinarily throws an error when no results are returned for a single fetch, which is a bit confusing. This PR ensures that the missing value cases are all caught, and wrapped with new LemmyErrors, rather than diesel errors. - Fixes #4601
70 lines
2 KiB
Rust
70 lines
2 KiB
Rust
use activitypub_federation::{
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config::Data,
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fetch::webfinger::webfinger_resolve_actor,
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traits::{Actor, Object},
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};
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use diesel::NotFound;
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use itertools::Itertools;
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use lemmy_api_common::context::LemmyContext;
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use lemmy_db_schema::traits::ApubActor;
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use lemmy_db_views::structs::LocalUserView;
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use lemmy_utils::error::{LemmyError, LemmyResult};
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pub mod post_or_comment;
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pub mod search;
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pub mod site_or_community_or_user;
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pub mod user_or_community;
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/// Resolve actor identifier like `!news@example.com` to user or community object.
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///
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/// In case the requesting user is logged in and the object was not found locally, it is attempted
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/// to fetch via webfinger from the original instance.
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#[tracing::instrument(skip_all)]
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pub async fn resolve_actor_identifier<ActorType, DbActor>(
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identifier: &str,
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context: &Data<LemmyContext>,
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local_user_view: &Option<LocalUserView>,
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include_deleted: bool,
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) -> LemmyResult<ActorType>
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where
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ActorType: Object<DataType = LemmyContext, Error = LemmyError>
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+ Object
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+ Actor
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+ From<DbActor>
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+ Send
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+ 'static,
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for<'de2> <ActorType as Object>::Kind: serde::Deserialize<'de2>,
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DbActor: ApubActor + Send + 'static,
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{
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// remote actor
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if identifier.contains('@') {
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let (name, domain) = identifier
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.splitn(2, '@')
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.collect_tuple()
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.expect("invalid query");
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let actor = DbActor::read_from_name_and_domain(&mut context.pool(), name, domain)
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.await
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.ok()
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.flatten();
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if let Some(actor) = actor {
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Ok(actor.into())
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} else if local_user_view.is_some() {
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// Fetch the actor from its home instance using webfinger
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let actor: ActorType = webfinger_resolve_actor(&identifier.to_lowercase(), context).await?;
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Ok(actor)
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} else {
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Err(NotFound.into())
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}
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}
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// local actor
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else {
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let identifier = identifier.to_string();
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Ok(
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DbActor::read_from_name(&mut context.pool(), &identifier, include_deleted)
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.await?
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.ok_or(NotFound)?
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.into(),
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)
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}
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}
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