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_queries::Bannable;
  29 use lemmy_db_schema::source::{
  30   community::{Community, CommunityPersonBan, CommunityPersonBanForm},
  31   person::Person,
  32 };
  33 use lemmy_utils::LemmyError;
  34 use lemmy_websocket::LemmyContext;
  35 use serde::{Deserialize, Serialize};
  36 use url::Url;
  37
  38 #[derive(Clone, Debug, Deserialize, Serialize, ActivityFields)]
  39 #[serde(rename_all = "camelCase")]
  40 pub struct UndoBlockUserFromCommunity {
  41   actor: ObjectId<Person>,
  42   to: [PublicUrl; 1],
  43   object: BlockUserFromCommunity,
  44   cc: [ObjectId<Community>; 1],
  45   #[serde(rename = "type")]
  46   kind: UndoType,
  47   id: Url,
  48   #[serde(rename = "@context")]
  49   context: OneOrMany<AnyBase>,
  50   #[serde(flatten)]
  51   unparsed: Unparsed,
  52 }
  53
  54 impl UndoBlockUserFromCommunity {
  55   pub async fn send(
  56     community: &Community,
  57     target: &Person,
  58     actor: &Person,
  59     context: &LemmyContext,
  60   ) -> Result<(), LemmyError> {
  61     let block = BlockUserFromCommunity::new(community, target, actor, context)?;
  62
  63     let id = generate_activity_id(
  64       UndoType::Undo,
  65       &context.settings().get_protocol_and_hostname(),
  66     )?;
  67     let undo = UndoBlockUserFromCommunity {
  68       actor: ObjectId::new(actor.actor_id()),
  69       to: [PublicUrl::Public],
  70       object: block,
  71       cc: [ObjectId::new(community.actor_id())],
  72       kind: UndoType::Undo,
  73       id: id.clone(),
  74       context: lemmy_context(),
  75       unparsed: Default::default(),
  76     };
  77
  78     let activity = AnnouncableActivities::UndoBlockUserFromCommunity(undo);
  79     let inboxes = vec![target.shared_inbox_or_inbox_url()];
  80     send_to_community(activity, &id, actor, community, inboxes, context).await
  81   }
  82 }
  83
  84 #[async_trait::async_trait(?Send)]
  85 impl ActivityHandler for UndoBlockUserFromCommunity {
  86   type DataType = LemmyContext;
  87   async fn verify(
  88     &self,
  89     context: &Data<LemmyContext>,
  90     request_counter: &mut i32,
  91   ) -> Result<(), LemmyError> {
  92     verify_activity(self, &context.settings())?;
  93     verify_person_in_community(&self.actor, &self.cc[0], context, request_counter).await?;
  94     verify_mod_action(&self.actor, self.cc[0].clone(), context, request_counter).await?;
  95     self.object.verify(context, request_counter).await?;
  96     Ok(())
  97   }
  98
  99   async fn receive(
 100     self,
 101     context: &Data<LemmyContext>,
 102     request_counter: &mut i32,
 103   ) -> Result<(), LemmyError> {
 104     let community = self.cc[0].dereference(context, request_counter).await?;
 105     let blocked_user = self
 106       .object
 107       .object
 108       .dereference(context, request_counter)
 109       .await?;
 110
 111     let community_user_ban_form = CommunityPersonBanForm {
 112       community_id: community.id,
 113       person_id: blocked_user.id,
 114     };
 115
 116     blocking(context.pool(), move |conn: &'_ _| {
 117       CommunityPersonBan::unban(conn, &community_user_ban_form)
 118     })
 119     .await??;
 120
 121     Ok(())
 122   }
 123 }