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

   1 use crate::{
   2   activities::{
   3     community::announce::AnnouncableActivities,
   4     generate_activity_id,
   5     verify_activity,
   6     verify_mod_action,
   7     verify_person_in_community,
   8   },
   9   activity_queue::send_to_community_new,
  10   extensions::context::lemmy_context,
  11   fetcher::{community::get_or_fetch_and_upsert_community, person::get_or_fetch_and_upsert_person},
  12   ActorType,
  13 };
  14 use activitystreams::{
  15   activity::kind::BlockType,
  16   base::AnyBase,
  17   primitives::OneOrMany,
  18   unparsed::Unparsed,
  19 };
  20 use lemmy_api_common::blocking;
  21 use lemmy_apub_lib::{values::PublicUrl, ActivityFields, ActivityHandler};
  22 use lemmy_db_queries::{Bannable, Followable};
  23 use lemmy_db_schema::source::{
  24   community::{
  25     Community,
  26     CommunityFollower,
  27     CommunityFollowerForm,
  28     CommunityPersonBan,
  29     CommunityPersonBanForm,
  30   },
  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 BlockUserFromCommunity {
  41   actor: Url,
  42   to: PublicUrl,
  43   pub(in crate::activities::community) object: Url,
  44   cc: [Url; 1],
  45   #[serde(rename = "type")]
  46   kind: BlockType,
  47   id: Url,
  48   #[serde(rename = "@context")]
  49   context: OneOrMany<AnyBase>,
  50   #[serde(flatten)]
  51   unparsed: Unparsed,
  52 }
  53
  54 impl BlockUserFromCommunity {
  55   pub(in crate::activities::community) fn new(
  56     community: &Community,
  57     target: &Person,
  58     actor: &Person,
  59   ) -> Result<BlockUserFromCommunity, LemmyError> {
  60     Ok(BlockUserFromCommunity {
  61       actor: actor.actor_id(),
  62       to: PublicUrl::Public,
  63       object: target.actor_id(),
  64       cc: [community.actor_id()],
  65       kind: BlockType::Block,
  66       id: generate_activity_id(BlockType::Block)?,
  67       context: lemmy_context(),
  68       unparsed: Default::default(),
  69     })
  70   }
  71
  72   pub async fn send(
  73     community: &Community,
  74     target: &Person,
  75     actor: &Person,
  76     context: &LemmyContext,
  77   ) -> Result<(), LemmyError> {
  78     let block = BlockUserFromCommunity::new(community, target, actor)?;
  79     let block_id = block.id.clone();
  80
  81     let activity = AnnouncableActivities::BlockUserFromCommunity(block);
  82     let inboxes = vec![target.get_shared_inbox_or_inbox_url()];
  83     send_to_community_new(activity, &block_id, actor, community, inboxes, context).await
  84   }
  85 }
  86
  87 #[async_trait::async_trait(?Send)]
  88 impl ActivityHandler for BlockUserFromCommunity {
  89   async fn verify(
  90     &self,
  91     context: &LemmyContext,
  92     request_counter: &mut i32,
  93   ) -> Result<(), LemmyError> {
  94     verify_activity(self)?;
  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).await?;
  97     Ok(())
  98   }
  99
 100   async fn receive(
 101     self,
 102     context: &LemmyContext,
 103     request_counter: &mut i32,
 104   ) -> Result<(), LemmyError> {
 105     let community =
 106       get_or_fetch_and_upsert_community(&self.cc[0], context, request_counter).await?;
 107     let blocked_user =
 108       get_or_fetch_and_upsert_person(&self.object, context, request_counter).await?;
 109
 110     let community_user_ban_form = CommunityPersonBanForm {
 111       community_id: community.id,
 112       person_id: blocked_user.id,
 113     };
 114
 115     blocking(context.pool(), move |conn: &'_ _| {
 116       CommunityPersonBan::ban(conn, &community_user_ban_form)
 117     })
 118     .await??;
 119
 120     // Also unsubscribe them from the community, if they are subscribed
 121     let community_follower_form = CommunityFollowerForm {
 122       community_id: community.id,
 123       person_id: blocked_user.id,
 124       pending: false,
 125     };
 126     blocking(context.pool(), move |conn: &'_ _| {
 127       CommunityFollower::unfollow(conn, &community_follower_form)
 128     })
 129     .await?
 130     .ok();
 131
 132     Ok(())
 133   }
 134 }