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_mod_action,
  11     verify_person_in_community,
  12   },
  13   context::lemmy_context,
  14   fetcher::object_id::ObjectId,
  15 };
  16 use activitystreams::{
  17   activity::kind::UndoType,
  18   base::AnyBase,
  19   primitives::OneOrMany,
  20   unparsed::Unparsed,
  21 };
  22 use lemmy_api_common::blocking;
  23 use lemmy_apub_lib::{
  24   data::Data,
  25   traits::{ActivityFields, ActivityHandler, ActorType},
  26   values::PublicUrl,
  27 };
  28 use lemmy_db_schema::{
  29   source::{
  30     community::{Community, CommunityPersonBan, CommunityPersonBanForm},
  31     person::Person,
  32   },
  33   traits::Bannable,
  34 };
  35 use lemmy_utils::LemmyError;
  36 use lemmy_websocket::LemmyContext;
  37 use serde::{Deserialize, Serialize};
  38 use url::Url;
  39
  40 #[derive(Clone, Debug, Deserialize, Serialize, ActivityFields)]
  41 #[serde(rename_all = "camelCase")]
  42 pub struct UndoBlockUserFromCommunity {
  43   actor: ObjectId<Person>,
  44   to: [PublicUrl; 1],
  45   object: BlockUserFromCommunity,
  46   cc: [ObjectId<Community>; 1],
  47   #[serde(rename = "type")]
  48   kind: UndoType,
  49   id: Url,
  50   #[serde(rename = "@context")]
  51   context: OneOrMany<AnyBase>,
  52   #[serde(flatten)]
  53   unparsed: Unparsed,
  54 }
  55
  56 impl UndoBlockUserFromCommunity {
  57   pub async fn send(
  58     community: &Community,
  59     target: &Person,
  60     actor: &Person,
  61     context: &LemmyContext,
  62   ) -> Result<(), LemmyError> {
  63     let block = BlockUserFromCommunity::new(community, target, actor, context)?;
  64
  65     let id = generate_activity_id(
  66       UndoType::Undo,
  67       &context.settings().get_protocol_and_hostname(),
  68     )?;
  69     let undo = UndoBlockUserFromCommunity {
  70       actor: ObjectId::new(actor.actor_id()),
  71       to: [PublicUrl::Public],
  72       object: block,
  73       cc: [ObjectId::new(community.actor_id())],
  74       kind: UndoType::Undo,
  75       id: id.clone(),
  76       context: lemmy_context(),
  77       unparsed: Default::default(),
  78     };
  79
  80     let activity = AnnouncableActivities::UndoBlockUserFromCommunity(undo);
  81     let inboxes = vec![target.shared_inbox_or_inbox_url()];
  82     send_to_community(activity, &id, actor, community, inboxes, context).await
  83   }
  84 }
  85
  86 #[async_trait::async_trait(?Send)]
  87 impl ActivityHandler for UndoBlockUserFromCommunity {
  88   type DataType = LemmyContext;
  89   async fn verify(
  90     &self,
  91     context: &Data<LemmyContext>,
  92     request_counter: &mut i32,
  93   ) -> Result<(), LemmyError> {
  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].clone(), 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 }