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

   1 use crate::{
   2   activities::{
   3     community::{
   4       announce::{AnnouncableActivities, GetCommunity},
   5       get_community_from_moderators_url,
   6       send_to_community,
   7     },
   8     generate_activity_id,
   9     verify_activity,
  10     verify_add_remove_moderator_target,
  11     verify_is_public,
  12     verify_mod_action,
  13     verify_person_in_community,
  14   },
  15   fetcher::object_id::ObjectId,
  16   generate_moderators_url,
  17   objects::{community::ApubCommunity, person::ApubPerson},
  18 };
  19 use activitystreams::{activity::kind::RemoveType, public, unparsed::Unparsed};
  20 use lemmy_api_common::blocking;
  21 use lemmy_apub_lib::{
  22   data::Data,
  23   traits::{ActivityFields, ActivityHandler, ActorType},
  24 };
  25 use lemmy_db_schema::{
  26   source::community::{CommunityModerator, CommunityModeratorForm},
  27   traits::Joinable,
  28 };
  29 use lemmy_utils::LemmyError;
  30 use lemmy_websocket::LemmyContext;
  31 use serde::{Deserialize, Serialize};
  32 use url::Url;
  33
  34 #[derive(Clone, Debug, Deserialize, Serialize, ActivityFields)]
  35 #[serde(rename_all = "camelCase")]
  36 pub struct RemoveMod {
  37   actor: ObjectId<ApubPerson>,
  38   to: Vec<Url>,
  39   pub(in crate::activities) object: ObjectId<ApubPerson>,
  40   cc: Vec<Url>,
  41   #[serde(rename = "type")]
  42   kind: RemoveType,
  43   pub(in crate::activities) target: Url,
  44   id: Url,
  45   #[serde(flatten)]
  46   unparsed: Unparsed,
  47 }
  48
  49 impl RemoveMod {
  50   pub async fn send(
  51     community: &ApubCommunity,
  52     removed_mod: &ApubPerson,
  53     actor: &ApubPerson,
  54     context: &LemmyContext,
  55   ) -> Result<(), LemmyError> {
  56     let id = generate_activity_id(
  57       RemoveType::Remove,
  58       &context.settings().get_protocol_and_hostname(),
  59     )?;
  60     let remove = RemoveMod {
  61       actor: ObjectId::new(actor.actor_id()),
  62       to: vec![public()],
  63       object: ObjectId::new(removed_mod.actor_id()),
  64       target: generate_moderators_url(&community.actor_id)?.into(),
  65       id: id.clone(),
  66       cc: vec![community.actor_id()],
  67       kind: RemoveType::Remove,
  68       unparsed: Default::default(),
  69     };
  70
  71     let activity = AnnouncableActivities::RemoveMod(remove);
  72     let inboxes = vec![removed_mod.shared_inbox_or_inbox_url()];
  73     send_to_community(activity, &id, actor, community, inboxes, context).await
  74   }
  75 }
  76
  77 #[async_trait::async_trait(?Send)]
  78 impl ActivityHandler for RemoveMod {
  79   type DataType = LemmyContext;
  80   async fn verify(
  81     &self,
  82     context: &Data<LemmyContext>,
  83     request_counter: &mut i32,
  84   ) -> Result<(), LemmyError> {
  85     verify_is_public(&self.to)?;
  86     verify_activity(self, &context.settings())?;
  87     let community = self.get_community(context, request_counter).await?;
  88     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  89     verify_mod_action(&self.actor, &community, context, request_counter).await?;
  90     verify_add_remove_moderator_target(&self.target, &community)?;
  91     Ok(())
  92   }
  93
  94   async fn receive(
  95     self,
  96     context: &Data<LemmyContext>,
  97     request_counter: &mut i32,
  98   ) -> Result<(), LemmyError> {
  99     let community = self.get_community(context, request_counter).await?;
 100     let remove_mod = self.object.dereference(context, request_counter).await?;
 101
 102     let form = CommunityModeratorForm {
 103       community_id: community.id,
 104       person_id: remove_mod.id,
 105     };
 106     blocking(context.pool(), move |conn| {
 107       CommunityModerator::leave(conn, &form)
 108     })
 109     .await??;
 110     // TODO: send websocket notification about removed mod
 111     Ok(())
 112   }
 113 }
 114
 115 #[async_trait::async_trait(?Send)]
 116 impl GetCommunity for RemoveMod {
 117   async fn get_community(
 118     &self,
 119     context: &LemmyContext,
 120     request_counter: &mut i32,
 121   ) -> Result<ApubCommunity, LemmyError> {
 122     get_community_from_moderators_url(&self.target, context, request_counter).await
 123   }
 124 }