Implement separate mod activities for feature, lock post (#2716)

[lemmy.git] / crates / apub / src / protocol / activities / deletion / delete.rs

diff --git a/crates/apub/src/protocol/activities/deletion/delete.rs b/crates/apub/src/protocol/activities/deletion/delete.rs
index 70b38af6c96fc69d962114ad75e8930f8a6f8779..162e595f1f28f696accf9b2cc76676f86d7ea990 100644 (file)
--- a/crates/apub/src/protocol/activities/deletion/delete.rs
+++ b/crates/apub/src/protocol/activities/deletion/delete.rs
@@ -1,6 +1,17 @@
-use crate::{objects::person::ApubPerson, protocol::Unparsed};
+use crate::{
+  activities::{deletion::DeletableObjects, verify_community_matches},
+  objects::{community::ApubCommunity, person::ApubPerson},
+  protocol::{objects::tombstone::Tombstone, IdOrNestedObject, InCommunity},
+};
+use activitypub_federation::{core::object_id::ObjectId, deser::helpers::deserialize_one_or_many};
 use activitystreams_kinds::activity::DeleteType;
-use lemmy_apub_lib::object_id::ObjectId;
+use anyhow::anyhow;
+use lemmy_api_common::context::LemmyContext;
+use lemmy_db_schema::{
+  source::{community::Community, post::Post},
+  traits::Crud,
+};
+use lemmy_utils::error::LemmyError;
 use serde::{Deserialize, Serialize};
 use serde_with::skip_serializing_none;
 use url::Url;
@@ -10,42 +21,45 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct Delete {
   pub(crate) actor: ObjectId<ApubPerson>,
-  #[serde(deserialize_with = "crate::deserialize_one_or_many")]
+  #[serde(deserialize_with = "deserialize_one_or_many")]
   pub(crate) to: Vec<Url>,
-  pub(crate) object: IdOrNestedObject,
-  #[serde(deserialize_with = "crate::deserialize_one_or_many")]
+  pub(crate) object: IdOrNestedObject<Tombstone>,
+  #[serde(rename = "type")]
+  pub(crate) kind: DeleteType,
+  pub(crate) id: Url,
+  pub(crate) audience: Option<ObjectId<ApubCommunity>>,
+
+  #[serde(deserialize_with = "deserialize_one_or_many")]
   #[serde(default)]
   #[serde(skip_serializing_if = "Vec::is_empty")]
   pub(crate) cc: Vec<Url>,
-  #[serde(rename = "type")]
-  pub(crate) kind: DeleteType,
   /// If summary is present, this is a mod action (Remove in Lemmy terms). Otherwise, its a user
   /// deleting their own content.
   pub(crate) summary: Option<String>,
-  pub(crate) id: Url,
-  #[serde(flatten)]
-  pub(crate) unparsed: Unparsed,
-}
-
-/// Instead of a simple ID string as object, Mastodon sends a nested tombstone for some reason,
-/// so we need to handle that as well.
-#[derive(Clone, Debug, Deserialize, Serialize)]
-#[serde(untagged)]
-pub(crate) enum IdOrNestedObject {
-  Id(Url),
-  NestedObject(NestedObject),
-}
-
-#[derive(Clone, Debug, Deserialize, Serialize)]
-pub(crate) struct NestedObject {
-  id: Url,
 }
 
-impl IdOrNestedObject {
-  pub(crate) fn id(&self) -> &Url {
-    match self {
-      IdOrNestedObject::Id(i) => i,
-      IdOrNestedObject::NestedObject(n) => &n.id,
+#[async_trait::async_trait(?Send)]
+impl InCommunity for Delete {
+  async fn community(
+    &self,
+    context: &LemmyContext,
+    _request_counter: &mut i32,
+  ) -> Result<ApubCommunity, LemmyError> {
+    let community_id = match DeletableObjects::read_from_db(self.object.id(), context).await? {
+      DeletableObjects::Community(c) => c.id,
+      DeletableObjects::Comment(c) => {
+        let post = Post::read(context.pool(), c.post_id).await?;
+        post.community_id
+      }
+      DeletableObjects::Post(p) => p.community_id,
+      DeletableObjects::PrivateMessage(_) => {
+        return Err(anyhow!("Private message is not part of community").into())
+      }
+    };
+    let community = Community::read(context.pool(), community_id).await?;
+    if let Some(audience) = &self.audience {
+      verify_community_matches(audience, community.actor_id.clone())?;
     }
+    Ok(community.into())
   }
 }