Use audience field to federate items in groups (fixes #2464) (#2584)

[lemmy.git] / crates / apub / src / protocol / activities / voting / vote.rs

diff --git a/crates/apub/src/protocol/activities/voting/vote.rs b/crates/apub/src/protocol/activities/voting/vote.rs
index 002d235c0e23b3ce303da7dee6eadc6663999566..5da9b791c8d7770daa63fcfb9d4d8968752eacda 100644 (file)
--- a/crates/apub/src/protocol/activities/voting/vote.rs
+++ b/crates/apub/src/protocol/activities/voting/vote.rs
@@ -1,6 +1,13 @@
-use crate::{fetcher::post_or_comment::PostOrComment, objects::person::ApubPerson};
+use crate::{
+  activities::verify_community_matches,
+  fetcher::post_or_comment::PostOrComment,
+  local_instance,
+  objects::{community::ApubCommunity, person::ApubPerson},
+  protocol::InCommunity,
+};
 use activitypub_federation::core::object_id::ObjectId;
 use lemmy_utils::error::LemmyError;
+use lemmy_websocket::LemmyContext;
 use serde::{Deserialize, Serialize};
 use std::convert::TryFrom;
 use strum_macros::Display;
@@ -14,6 +21,7 @@ pub struct Vote {
   #[serde(rename = "type")]
   pub(crate) kind: VoteType,
   pub(crate) id: Url,
+  pub(crate) audience: Option<ObjectId<ApubCommunity>>,
 }
 
 #[derive(Clone, Debug, Display, Deserialize, Serialize, PartialEq, Eq)]
@@ -42,3 +50,29 @@ impl From<&VoteType> for i16 {
     }
   }
 }
+
+#[async_trait::async_trait(?Send)]
+impl InCommunity for Vote {
+  async fn community(
+    &self,
+    context: &LemmyContext,
+    request_counter: &mut i32,
+  ) -> Result<ApubCommunity, LemmyError> {
+    let local_instance = local_instance(context).await;
+    let object_community = self
+      .object
+      .dereference(context, local_instance, request_counter)
+      .await?
+      .community(context, request_counter)
+      .await?;
+    if let Some(audience) = &self.audience {
+      let audience = audience
+        .dereference(context, local_instance, request_counter)
+        .await?;
+      verify_community_matches(&audience, object_community.id)?;
+      Ok(audience)
+    } else {
+      Ok(object_community)
+    }
+  }
+}