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::{activity::kind::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   pub async fn send(
  32     object: &PostOrComment,
  33     actor: &ApubPerson,
  34     community_id: CommunityId,
  35     kind: VoteType,
  36     context: &LemmyContext,
  37   ) -> Result<(), LemmyError> {
  38     let community: ApubCommunity = blocking(context.pool(), move |conn| {
  39       Community::read(conn, community_id)
  40     })
  41     .await??
  42     .into();
  43
  44     let object = Vote::new(object, actor, &community, kind.clone(), context)?;
  45     let id = generate_activity_id(
  46       UndoType::Undo,
  47       &context.settings().get_protocol_and_hostname(),
  48     )?;
  49     let undo_vote = UndoVote {
  50       actor: ObjectId::new(actor.actor_id()),
  51       to: vec![public()],
  52       object,
  53       cc: vec![community.actor_id()],
  54       kind: UndoType::Undo,
  55       id: id.clone(),
  56       unparsed: Default::default(),
  57     };
  58     let activity = AnnouncableActivities::UndoVote(undo_vote);
  59     send_activity_in_community(activity, &id, actor, &community, vec![], context).await
  60   }
  61 }
  62
  63 #[async_trait::async_trait(?Send)]
  64 impl ActivityHandler for UndoVote {
  65   type DataType = LemmyContext;
  66   async fn verify(
  67     &self,
  68     context: &Data<LemmyContext>,
  69     request_counter: &mut i32,
  70   ) -> Result<(), LemmyError> {
  71     verify_is_public(&self.to, &self.cc)?;
  72     verify_activity(&self.id, self.actor.inner(), &context.settings())?;
  73     let community = self.get_community(context, request_counter).await?;
  74     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  75     verify_urls_match(self.actor.inner(), self.object.actor.inner())?;
  76     self.object.verify(context, request_counter).await?;
  77     Ok(())
  78   }
  79
  80   async fn receive(
  81     self,
  82     context: &Data<LemmyContext>,
  83     request_counter: &mut i32,
  84   ) -> Result<(), LemmyError> {
  85     let actor = self.actor.dereference(context, request_counter).await?;
  86     let object = self
  87       .object
  88       .object
  89       .dereference(context, request_counter)
  90       .await?;
  91     match object {
  92       PostOrComment::Post(p) => undo_vote_post(actor, &p, context).await,
  93       PostOrComment::Comment(c) => undo_vote_comment(actor, &c, context).await,
  94     }
  95   }
  96 }
  97
  98 #[async_trait::async_trait(?Send)]
  99 impl GetCommunity for UndoVote {
 100   async fn get_community(
 101     &self,
 102     context: &LemmyContext,
 103     request_counter: &mut i32,
 104   ) -> Result<ApubCommunity, LemmyError> {
 105     self.object.get_community(context, request_counter).await
 106   }
 107 }