crates/apub/src/activities/community/undo_block_user.rs

   1 use crate::{
   2   activities::{
   3     community::{
   4       announce::AnnouncableActivities,
   5       block_user::BlockUserFromCommunity,
   6       send_to_community,
   7     },
   8     generate_activity_id,
   9     verify_activity,
  10     verify_is_public,
  11     verify_mod_action,
  12     verify_person_in_community,
  13   },
  14   context::lemmy_context,
  15   fetcher::object_id::ObjectId,
  16   objects::{community::ApubCommunity, person::ApubPerson},
  17 };
  18 use activitystreams::{
  19   activity::kind::UndoType,
  20   base::AnyBase,
  21   primitives::OneOrMany,
  22   public,
  23   unparsed::Unparsed,
  24 };
  25 use lemmy_api_common::blocking;
  26 use lemmy_apub_lib::{
  27   data::Data,
  28   traits::{ActivityFields, ActivityHandler, ActorType},
  29 };
  30 use lemmy_db_schema::{
  31   source::community::{CommunityPersonBan, CommunityPersonBanForm},
  32   traits::Bannable,
  33 };
  34 use lemmy_utils::LemmyError;
  35 use lemmy_websocket::LemmyContext;
  36 use serde::{Deserialize, Serialize};
  37 use url::Url;
  38
  39 #[derive(Clone, Debug, Deserialize, Serialize, ActivityFields)]
  40 #[serde(rename_all = "camelCase")]
  41 pub struct UndoBlockUserFromCommunity {
  42   actor: ObjectId<ApubPerson>,
  43   to: Vec<Url>,
  44   object: BlockUserFromCommunity,
  45   cc: [ObjectId<ApubCommunity>; 1],
  46   #[serde(rename = "type")]
  47   kind: UndoType,
  48   id: Url,
  49   #[serde(rename = "@context")]
  50   context: OneOrMany<AnyBase>,
  51   #[serde(flatten)]
  52   unparsed: Unparsed,
  53 }
  54
  55 impl UndoBlockUserFromCommunity {
  56   pub async fn send(
  57     community: &ApubCommunity,
  58     target: &ApubPerson,
  59     actor: &ApubPerson,
  60     context: &LemmyContext,
  61   ) -> Result<(), LemmyError> {
  62     let block = BlockUserFromCommunity::new(community, target, actor, context)?;
  63
  64     let id = generate_activity_id(
  65       UndoType::Undo,
  66       &context.settings().get_protocol_and_hostname(),
  67     )?;
  68     let undo = UndoBlockUserFromCommunity {
  69       actor: ObjectId::new(actor.actor_id()),
  70       to: vec![public()],
  71       object: block,
  72       cc: [ObjectId::new(community.actor_id())],
  73       kind: UndoType::Undo,
  74       id: id.clone(),
  75       context: lemmy_context(),
  76       unparsed: Default::default(),
  77     };
  78
  79     let activity = AnnouncableActivities::UndoBlockUserFromCommunity(undo);
  80     let inboxes = vec![target.shared_inbox_or_inbox_url()];
  81     send_to_community(activity, &id, actor, community, inboxes, context).await
  82   }
  83 }
  84
  85 #[async_trait::async_trait(?Send)]
  86 impl ActivityHandler for UndoBlockUserFromCommunity {
  87   type DataType = LemmyContext;
  88   async fn verify(
  89     &self,
  90     context: &Data<LemmyContext>,
  91     request_counter: &mut i32,
  92   ) -> Result<(), LemmyError> {
  93     verify_is_public(&self.to)?;
  94     verify_activity(self, &context.settings())?;
  95     verify_person_in_community(&self.actor, &self.cc[0], context, request_counter).await?;
  96     verify_mod_action(&self.actor, &self.cc[0], context, request_counter).await?;
  97     self.object.verify(context, request_counter).await?;
  98     Ok(())
  99   }
 100
 101   async fn receive(
 102     self,
 103     context: &Data<LemmyContext>,
 104     request_counter: &mut i32,
 105   ) -> Result<(), LemmyError> {
 106     let community = self.cc[0].dereference(context, request_counter).await?;
 107     let blocked_user = self
 108       .object
 109       .object
 110       .dereference(context, request_counter)
 111       .await?;
 112
 113     let community_user_ban_form = CommunityPersonBanForm {
 114       community_id: community.id,
 115       person_id: blocked_user.id,
 116     };
 117
 118     blocking(context.pool(), move |conn: &'_ _| {
 119       CommunityPersonBan::unban(conn, &community_user_ban_form)
 120     })
 121     .await??;
 122
 123     Ok(())
 124   }
 125 }