crates/apub/src/protocol/activities/deletion/delete.rs

   1 use crate::{
   2   activities::{deletion::DeletableObjects, verify_community_matches},
   3   objects::{community::ApubCommunity, person::ApubPerson},
   4   protocol::{objects::tombstone::Tombstone, IdOrNestedObject, InCommunity},
   5 };
   6 use activitypub_federation::{
   7   config::Data,
   8   fetch::object_id::ObjectId,
   9   kinds::activity::DeleteType,
  10   protocol::helpers::deserialize_one_or_many,
  11 };
  12 use anyhow::anyhow;
  13 use lemmy_api_common::context::LemmyContext;
  14 use lemmy_db_schema::{
  15   source::{community::Community, post::Post},
  16   traits::Crud,
  17 };
  18 use lemmy_utils::error::LemmyError;
  19 use serde::{Deserialize, Serialize};
  20 use serde_with::skip_serializing_none;
  21 use url::Url;
  22
  23 #[skip_serializing_none]
  24 #[derive(Clone, Debug, Deserialize, Serialize)]
  25 #[serde(rename_all = "camelCase")]
  26 pub struct Delete {
  27   pub(crate) actor: ObjectId<ApubPerson>,
  28   #[serde(deserialize_with = "deserialize_one_or_many")]
  29   pub(crate) to: Vec<Url>,
  30   pub(crate) object: IdOrNestedObject<Tombstone>,
  31   #[serde(rename = "type")]
  32   pub(crate) kind: DeleteType,
  33   pub(crate) id: Url,
  34   pub(crate) audience: Option<ObjectId<ApubCommunity>>,
  35
  36   #[serde(deserialize_with = "deserialize_one_or_many")]
  37   #[serde(default)]
  38   #[serde(skip_serializing_if = "Vec::is_empty")]
  39   pub(crate) cc: Vec<Url>,
  40   /// If summary is present, this is a mod action (Remove in Lemmy terms). Otherwise, its a user
  41   /// deleting their own content.
  42   pub(crate) summary: Option<String>,
  43 }
  44
  45 #[async_trait::async_trait]
  46 impl InCommunity for Delete {
  47   async fn community(&self, context: &Data<LemmyContext>) -> Result<ApubCommunity, LemmyError> {
  48     let community_id = match DeletableObjects::read_from_db(self.object.id(), context).await? {
  49       DeletableObjects::Community(c) => c.id,
  50       DeletableObjects::Comment(c) => {
  51         let post = Post::read(context.pool(), c.post_id).await?;
  52         post.community_id
  53       }
  54       DeletableObjects::Post(p) => p.community_id,
  55       DeletableObjects::PrivateMessage(_) => {
  56         return Err(anyhow!("Private message is not part of community").into())
  57       }
  58     };
  59     let community = Community::read(context.pool(), community_id).await?;
  60     if let Some(audience) = &self.audience {
  61       verify_community_matches(audience, community.actor_id.clone())?;
  62     }
  63     Ok(community.into())
  64   }
  65 }