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::object_id::ObjectId,
  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: ObjectId<Person>,
  42   to: [PublicUrl; 1],
  43   pub(in crate::activities::community) object: ObjectId<Person>,
  44   cc: [ObjectId<Community>; 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     context: &LemmyContext,
  60   ) -> Result<BlockUserFromCommunity, LemmyError> {
  61     Ok(BlockUserFromCommunity {
  62       actor: ObjectId::new(actor.actor_id()),
  63       to: [PublicUrl::Public],
  64       object: ObjectId::new(target.actor_id()),
  65       cc: [ObjectId::new(community.actor_id())],
  66       kind: BlockType::Block,
  67       id: generate_activity_id(
  68         BlockType::Block,
  69         &context.settings().get_protocol_and_hostname(),
  70       )?,
  71       context: lemmy_context(),
  72       unparsed: Default::default(),
  73     })
  74   }
  75
  76   pub async fn send(
  77     community: &Community,
  78     target: &Person,
  79     actor: &Person,
  80     context: &LemmyContext,
  81   ) -> Result<(), LemmyError> {
  82     let block = BlockUserFromCommunity::new(community, target, actor, context)?;
  83     let block_id = block.id.clone();
  84
  85     let activity = AnnouncableActivities::BlockUserFromCommunity(block);
  86     let inboxes = vec![target.get_shared_inbox_or_inbox_url()];
  87     send_to_community_new(activity, &block_id, actor, community, inboxes, context).await
  88   }
  89 }
  90
  91 #[async_trait::async_trait(?Send)]
  92 impl ActivityHandler for BlockUserFromCommunity {
  93   async fn verify(
  94     &self,
  95     context: &LemmyContext,
  96     request_counter: &mut i32,
  97   ) -> Result<(), LemmyError> {
  98     verify_activity(self, &context.settings())?;
  99     verify_person_in_community(&self.actor, &self.cc[0], context, request_counter).await?;
 100     verify_mod_action(&self.actor, self.cc[0].clone(), context).await?;
 101     Ok(())
 102   }
 103
 104   async fn receive(
 105     self,
 106     context: &LemmyContext,
 107     request_counter: &mut i32,
 108   ) -> Result<(), LemmyError> {
 109     let community = self.cc[0].dereference(context, request_counter).await?;
 110     let blocked_user = self.object.dereference(context, request_counter).await?;
 111
 112     let community_user_ban_form = CommunityPersonBanForm {
 113       community_id: community.id,
 114       person_id: blocked_user.id,
 115     };
 116
 117     blocking(context.pool(), move |conn: &'_ _| {
 118       CommunityPersonBan::ban(conn, &community_user_ban_form)
 119     })
 120     .await??;
 121
 122     // Also unsubscribe them from the community, if they are subscribed
 123     let community_follower_form = CommunityFollowerForm {
 124       community_id: community.id,
 125       person_id: blocked_user.id,
 126       pending: false,
 127     };
 128     blocking(context.pool(), move |conn: &'_ _| {
 129       CommunityFollower::unfollow(conn, &community_follower_form)
 130     })
 131     .await?
 132     .ok();
 133
 134     Ok(())
 135   }
 136 }