crates/apub/src/activities/voting/undo_vote.rs

   1 use crate::{
   2   activities::{
   3     community::{announce::GetCommunity, send_activity_in_community},
   4     generate_activity_id,
   5     verify_activity,
   6     verify_is_public,
   7     verify_person_in_community,
   8     voting::{undo_vote_comment, undo_vote_post},
   9   },
  10   activity_lists::AnnouncableActivities,
  11   objects::{community::ApubCommunity, person::ApubPerson},
  12   protocol::activities::voting::{
  13     undo_vote::UndoVote,
  14     vote::{Vote, VoteType},
  15   },
  16   PostOrComment,
  17 };
  18 use activitystreams_kinds::{activity::UndoType, public};
  19 use lemmy_api_common::blocking;
  20 use lemmy_apub_lib::{
  21   data::Data,
  22   object_id::ObjectId,
  23   traits::{ActivityHandler, ActorType},
  24   verify::verify_urls_match,
  25 };
  26 use lemmy_db_schema::{newtypes::CommunityId, source::community::Community, traits::Crud};
  27 use lemmy_utils::LemmyError;
  28 use lemmy_websocket::LemmyContext;
  29
  30 impl UndoVote {
  31   #[tracing::instrument(skip_all)]
  32   pub async fn send(
  33     object: &PostOrComment,
  34     actor: &ApubPerson,
  35     community_id: CommunityId,
  36     kind: VoteType,
  37     context: &LemmyContext,
  38   ) -> Result<(), LemmyError> {
  39     let community: ApubCommunity = blocking(context.pool(), move |conn| {
  40       Community::read(conn, community_id)
  41     })
  42     .await??
  43     .into();
  44
  45     let object = Vote::new(object, actor, &community, kind.clone(), context)?;
  46     let id = generate_activity_id(
  47       UndoType::Undo,
  48       &context.settings().get_protocol_and_hostname(),
  49     )?;
  50     let undo_vote = UndoVote {
  51       actor: ObjectId::new(actor.actor_id()),
  52       to: vec![public()],
  53       object,
  54       cc: vec![community.actor_id()],
  55       kind: UndoType::Undo,
  56       id: id.clone(),
  57       unparsed: Default::default(),
  58     };
  59     let activity = AnnouncableActivities::UndoVote(undo_vote);
  60     send_activity_in_community(activity, &id, actor, &community, vec![], context).await
  61   }
  62 }
  63
  64 #[async_trait::async_trait(?Send)]
  65 impl ActivityHandler for UndoVote {
  66   type DataType = LemmyContext;
  67
  68   #[tracing::instrument(skip_all)]
  69   async fn verify(
  70     &self,
  71     context: &Data<LemmyContext>,
  72     request_counter: &mut i32,
  73   ) -> Result<(), LemmyError> {
  74     verify_is_public(&self.to, &self.cc)?;
  75     verify_activity(&self.id, self.actor.inner(), &context.settings())?;
  76     let community = self.get_community(context, request_counter).await?;
  77     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  78     verify_urls_match(self.actor.inner(), self.object.actor.inner())?;
  79     self.object.verify(context, request_counter).await?;
  80     Ok(())
  81   }
  82
  83   #[tracing::instrument(skip_all)]
  84   async fn receive(
  85     self,
  86     context: &Data<LemmyContext>,
  87     request_counter: &mut i32,
  88   ) -> Result<(), LemmyError> {
  89     let actor = self
  90       .actor
  91       .dereference(context, context.client(), request_counter)
  92       .await?;
  93     let object = self
  94       .object
  95       .object
  96       .dereference(context, context.client(), request_counter)
  97       .await?;
  98     match object {
  99       PostOrComment::Post(p) => undo_vote_post(actor, &p, context).await,
 100       PostOrComment::Comment(c) => undo_vote_comment(actor, &c, context).await,
 101     }
 102   }
 103 }
 104
 105 #[async_trait::async_trait(?Send)]
 106 impl GetCommunity for UndoVote {
 107   #[tracing::instrument(skip_all)]
 108   async fn get_community(
 109     &self,
 110     context: &LemmyContext,
 111     request_counter: &mut i32,
 112   ) -> Result<ApubCommunity, LemmyError> {
 113     self.object.get_community(context, request_counter).await
 114   }
 115 }