crates/apub/src/activities/community/block_user.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_mod_action,
   8     verify_person_in_community,
   9   },
  10   activity_lists::AnnouncableActivities,
  11   objects::{community::ApubCommunity, person::ApubPerson},
  12   protocol::activities::community::block_user::BlockUserFromCommunity,
  13 };
  14 use activitystreams_kinds::{activity::BlockType, public};
  15 use lemmy_api_common::blocking;
  16 use lemmy_apub_lib::{
  17   data::Data,
  18   object_id::ObjectId,
  19   traits::{ActivityHandler, ActorType},
  20 };
  21 use lemmy_db_schema::{
  22   source::community::{
  23     CommunityFollower,
  24     CommunityFollowerForm,
  25     CommunityPersonBan,
  26     CommunityPersonBanForm,
  27   },
  28   traits::{Bannable, Followable},
  29 };
  30 use lemmy_utils::LemmyError;
  31 use lemmy_websocket::LemmyContext;
  32
  33 impl BlockUserFromCommunity {
  34   pub(in crate::activities::community) fn new(
  35     community: &ApubCommunity,
  36     target: &ApubPerson,
  37     actor: &ApubPerson,
  38     context: &LemmyContext,
  39   ) -> Result<BlockUserFromCommunity, LemmyError> {
  40     Ok(BlockUserFromCommunity {
  41       actor: ObjectId::new(actor.actor_id()),
  42       to: vec![public()],
  43       object: ObjectId::new(target.actor_id()),
  44       cc: vec![community.actor_id()],
  45       target: ObjectId::new(community.actor_id()),
  46       kind: BlockType::Block,
  47       id: generate_activity_id(
  48         BlockType::Block,
  49         &context.settings().get_protocol_and_hostname(),
  50       )?,
  51       unparsed: Default::default(),
  52     })
  53   }
  54
  55   pub async fn send(
  56     community: &ApubCommunity,
  57     target: &ApubPerson,
  58     actor: &ApubPerson,
  59     context: &LemmyContext,
  60   ) -> Result<(), LemmyError> {
  61     let block = BlockUserFromCommunity::new(community, target, actor, context)?;
  62     let block_id = block.id.clone();
  63
  64     let activity = AnnouncableActivities::BlockUserFromCommunity(block);
  65     let inboxes = vec![target.shared_inbox_or_inbox_url()];
  66     send_activity_in_community(activity, &block_id, actor, community, inboxes, context).await
  67   }
  68 }
  69
  70 #[async_trait::async_trait(?Send)]
  71 impl ActivityHandler for BlockUserFromCommunity {
  72   type DataType = LemmyContext;
  73   async fn verify(
  74     &self,
  75     context: &Data<LemmyContext>,
  76     request_counter: &mut i32,
  77   ) -> Result<(), LemmyError> {
  78     verify_is_public(&self.to, &self.cc)?;
  79     verify_activity(&self.id, self.actor.inner(), &context.settings())?;
  80     let community = self.get_community(context, request_counter).await?;
  81     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  82     verify_mod_action(&self.actor, &community, context, request_counter).await?;
  83     Ok(())
  84   }
  85
  86   async fn receive(
  87     self,
  88     context: &Data<LemmyContext>,
  89     request_counter: &mut i32,
  90   ) -> Result<(), LemmyError> {
  91     let community = self.get_community(context, request_counter).await?;
  92     let blocked_user = self.object.dereference(context, request_counter).await?;
  93
  94     let community_user_ban_form = CommunityPersonBanForm {
  95       community_id: community.id,
  96       person_id: blocked_user.id,
  97     };
  98
  99     blocking(context.pool(), move |conn: &'_ _| {
 100       CommunityPersonBan::ban(conn, &community_user_ban_form)
 101     })
 102     .await??;
 103
 104     // Also unsubscribe them from the community, if they are subscribed
 105     let community_follower_form = CommunityFollowerForm {
 106       community_id: community.id,
 107       person_id: blocked_user.id,
 108       pending: false,
 109     };
 110     blocking(context.pool(), move |conn: &'_ _| {
 111       CommunityFollower::unfollow(conn, &community_follower_form)
 112     })
 113     .await?
 114     .ok();
 115
 116     Ok(())
 117   }
 118 }
 119
 120 #[async_trait::async_trait(?Send)]
 121 impl GetCommunity for BlockUserFromCommunity {
 122   async fn get_community(
 123     &self,
 124     context: &LemmyContext,
 125     request_counter: &mut i32,
 126   ) -> Result<ApubCommunity, LemmyError> {
 127     self.target.dereference(context, request_counter).await
 128   }
 129 }