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

   1 use crate::{
   2   activities::{
   3     community::{
   4       announce::{AnnouncableActivities, GetCommunity},
   5       send_to_community,
   6     },
   7     generate_activity_id,
   8     verify_activity,
   9     verify_is_public,
  10     verify_mod_action,
  11     verify_person_in_community,
  12   },
  13   context::lemmy_context,
  14   fetcher::object_id::ObjectId,
  15   objects::{community::ApubCommunity, person::ApubPerson},
  16 };
  17 use activitystreams::{
  18   activity::kind::BlockType,
  19   base::AnyBase,
  20   primitives::OneOrMany,
  21   public,
  22   unparsed::Unparsed,
  23 };
  24 use lemmy_api_common::blocking;
  25 use lemmy_apub_lib::{
  26   data::Data,
  27   traits::{ActivityFields, ActivityHandler, ActorType},
  28 };
  29 use lemmy_db_schema::{
  30   source::community::{
  31     CommunityFollower,
  32     CommunityFollowerForm,
  33     CommunityPersonBan,
  34     CommunityPersonBanForm,
  35   },
  36   traits::{Bannable, Followable},
  37 };
  38 use lemmy_utils::LemmyError;
  39 use lemmy_websocket::LemmyContext;
  40 use serde::{Deserialize, Serialize};
  41 use url::Url;
  42
  43 #[derive(Clone, Debug, Deserialize, Serialize, ActivityFields)]
  44 #[serde(rename_all = "camelCase")]
  45 pub struct BlockUserFromCommunity {
  46   actor: ObjectId<ApubPerson>,
  47   to: Vec<Url>,
  48   pub(in crate::activities::community) object: ObjectId<ApubPerson>,
  49   cc: Vec<Url>,
  50   target: ObjectId<ApubCommunity>,
  51   #[serde(rename = "type")]
  52   kind: BlockType,
  53   id: Url,
  54   #[serde(rename = "@context")]
  55   context: OneOrMany<AnyBase>,
  56   #[serde(flatten)]
  57   unparsed: Unparsed,
  58 }
  59
  60 impl BlockUserFromCommunity {
  61   pub(in crate::activities::community) fn new(
  62     community: &ApubCommunity,
  63     target: &ApubPerson,
  64     actor: &ApubPerson,
  65     context: &LemmyContext,
  66   ) -> Result<BlockUserFromCommunity, LemmyError> {
  67     Ok(BlockUserFromCommunity {
  68       actor: ObjectId::new(actor.actor_id()),
  69       to: vec![public()],
  70       object: ObjectId::new(target.actor_id()),
  71       cc: vec![community.actor_id()],
  72       target: ObjectId::new(community.actor_id()),
  73       kind: BlockType::Block,
  74       id: generate_activity_id(
  75         BlockType::Block,
  76         &context.settings().get_protocol_and_hostname(),
  77       )?,
  78       context: lemmy_context(),
  79       unparsed: Default::default(),
  80     })
  81   }
  82
  83   pub async fn send(
  84     community: &ApubCommunity,
  85     target: &ApubPerson,
  86     actor: &ApubPerson,
  87     context: &LemmyContext,
  88   ) -> Result<(), LemmyError> {
  89     let block = BlockUserFromCommunity::new(community, target, actor, context)?;
  90     let block_id = block.id.clone();
  91
  92     let activity = AnnouncableActivities::BlockUserFromCommunity(block);
  93     let inboxes = vec![target.shared_inbox_or_inbox_url()];
  94     send_to_community(activity, &block_id, actor, community, inboxes, context).await
  95   }
  96 }
  97
  98 #[async_trait::async_trait(?Send)]
  99 impl ActivityHandler for BlockUserFromCommunity {
 100   type DataType = LemmyContext;
 101   async fn verify(
 102     &self,
 103     context: &Data<LemmyContext>,
 104     request_counter: &mut i32,
 105   ) -> Result<(), LemmyError> {
 106     verify_is_public(&self.to)?;
 107     verify_activity(self, &context.settings())?;
 108     let community = self.get_community(context, request_counter).await?;
 109     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
 110     verify_mod_action(&self.actor, &community, context, request_counter).await?;
 111     Ok(())
 112   }
 113
 114   async fn receive(
 115     self,
 116     context: &Data<LemmyContext>,
 117     request_counter: &mut i32,
 118   ) -> Result<(), LemmyError> {
 119     let community = self.get_community(context, request_counter).await?;
 120     let blocked_user = self.object.dereference(context, request_counter).await?;
 121
 122     let community_user_ban_form = CommunityPersonBanForm {
 123       community_id: community.id,
 124       person_id: blocked_user.id,
 125     };
 126
 127     blocking(context.pool(), move |conn: &'_ _| {
 128       CommunityPersonBan::ban(conn, &community_user_ban_form)
 129     })
 130     .await??;
 131
 132     // Also unsubscribe them from the community, if they are subscribed
 133     let community_follower_form = CommunityFollowerForm {
 134       community_id: community.id,
 135       person_id: blocked_user.id,
 136       pending: false,
 137     };
 138     blocking(context.pool(), move |conn: &'_ _| {
 139       CommunityFollower::unfollow(conn, &community_follower_form)
 140     })
 141     .await?
 142     .ok();
 143
 144     Ok(())
 145   }
 146 }
 147
 148 #[async_trait::async_trait(?Send)]
 149 impl GetCommunity for BlockUserFromCommunity {
 150   async fn get_community(
 151     &self,
 152     context: &LemmyContext,
 153     request_counter: &mut i32,
 154   ) -> Result<ApubCommunity, LemmyError> {
 155     self.target.dereference(context, request_counter).await
 156   }
 157 }