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

   1 use crate::{
   2   activities::{
   3     community::{announce::GetCommunity, send_to_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   fetcher::object_id::ObjectId,
  12   objects::{community::ApubCommunity, person::ApubPerson},
  13   protocol::activities::voting::{
  14     undo_vote::UndoVote,
  15     vote::{Vote, VoteType},
  16   },
  17   PostOrComment,
  18 };
  19 use activitystreams::{activity::kind::UndoType, public};
  20 use lemmy_api_common::blocking;
  21 use lemmy_apub_lib::{
  22   data::Data,
  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 use std::ops::Deref;
  30
  31 impl UndoVote {
  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_to_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   async fn verify(
  68     &self,
  69     context: &Data<LemmyContext>,
  70     request_counter: &mut i32,
  71   ) -> Result<(), LemmyError> {
  72     verify_is_public(&self.to)?;
  73     verify_activity(&self.id, self.actor.inner(), &context.settings())?;
  74     let community = self.get_community(context, request_counter).await?;
  75     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  76     verify_urls_match(self.actor.inner(), self.object.actor.inner())?;
  77     self.object.verify(context, request_counter).await?;
  78     Ok(())
  79   }
  80
  81   async fn receive(
  82     self,
  83     context: &Data<LemmyContext>,
  84     request_counter: &mut i32,
  85   ) -> Result<(), LemmyError> {
  86     let actor = self.actor.dereference(context, request_counter).await?;
  87     let object = self
  88       .object
  89       .object
  90       .dereference(context, request_counter)
  91       .await?;
  92     match object {
  93       PostOrComment::Post(p) => undo_vote_post(actor, p.deref(), context).await,
  94       PostOrComment::Comment(c) => undo_vote_comment(actor, &c, context).await,
  95     }
  96   }
  97 }
  98
  99 #[async_trait::async_trait(?Send)]
 100 impl GetCommunity for UndoVote {
 101   async fn get_community(
 102     &self,
 103     context: &LemmyContext,
 104     request_counter: &mut i32,
 105   ) -> Result<ApubCommunity, LemmyError> {
 106     self.object.get_community(context, request_counter).await
 107   }
 108 }