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

   1 use crate::{
   2   activities::{
   3     community::{
   4       announce::GetCommunity,
   5       get_community_from_moderators_url,
   6       send_activity_in_community,
   7     },
   8     generate_activity_id,
   9     verify_add_remove_moderator_target,
  10     verify_is_public,
  11     verify_mod_action,
  12     verify_person_in_community,
  13   },
  14   activity_lists::AnnouncableActivities,
  15   generate_moderators_url,
  16   local_instance,
  17   objects::{community::ApubCommunity, person::ApubPerson},
  18   protocol::activities::community::remove_mod::RemoveMod,
  19   ActorType,
  20 };
  21 use activitypub_federation::{core::object_id::ObjectId, data::Data, traits::ActivityHandler};
  22 use activitystreams_kinds::{activity::RemoveType, public};
  23 use lemmy_api_common::utils::blocking;
  24 use lemmy_db_schema::{
  25   source::{
  26     community::{CommunityModerator, CommunityModeratorForm},
  27     moderator::{ModAddCommunity, ModAddCommunityForm},
  28   },
  29   traits::{Crud, Joinable},
  30 };
  31 use lemmy_utils::error::LemmyError;
  32 use lemmy_websocket::LemmyContext;
  33 use url::Url;
  34
  35 impl RemoveMod {
  36   #[tracing::instrument(skip_all)]
  37   pub async fn send(
  38     community: &ApubCommunity,
  39     removed_mod: &ApubPerson,
  40     actor: &ApubPerson,
  41     context: &LemmyContext,
  42   ) -> Result<(), LemmyError> {
  43     let id = generate_activity_id(
  44       RemoveType::Remove,
  45       &context.settings().get_protocol_and_hostname(),
  46     )?;
  47     let remove = RemoveMod {
  48       actor: ObjectId::new(actor.actor_id()),
  49       to: vec![public()],
  50       object: ObjectId::new(removed_mod.actor_id()),
  51       target: generate_moderators_url(&community.actor_id)?.into(),
  52       id: id.clone(),
  53       cc: vec![community.actor_id()],
  54       kind: RemoveType::Remove,
  55       unparsed: Default::default(),
  56     };
  57
  58     let activity = AnnouncableActivities::RemoveMod(remove);
  59     let inboxes = vec![removed_mod.shared_inbox_or_inbox_url()];
  60     send_activity_in_community(activity, &id, actor, community, inboxes, context).await
  61   }
  62 }
  63
  64 #[async_trait::async_trait(?Send)]
  65 impl ActivityHandler for RemoveMod {
  66   type DataType = LemmyContext;
  67   type Error = LemmyError;
  68
  69   fn id(&self) -> &Url {
  70     &self.id
  71   }
  72
  73   fn actor(&self) -> &Url {
  74     self.actor.inner()
  75   }
  76
  77   #[tracing::instrument(skip_all)]
  78   async fn verify(
  79     &self,
  80     context: &Data<LemmyContext>,
  81     request_counter: &mut i32,
  82   ) -> Result<(), LemmyError> {
  83     verify_is_public(&self.to, &self.cc)?;
  84     let community = self.get_community(context, request_counter).await?;
  85     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  86     verify_mod_action(
  87       &self.actor,
  88       self.object.inner(),
  89       &community,
  90       context,
  91       request_counter,
  92     )
  93     .await?;
  94     verify_add_remove_moderator_target(&self.target, &community)?;
  95     Ok(())
  96   }
  97
  98   #[tracing::instrument(skip_all)]
  99   async fn receive(
 100     self,
 101     context: &Data<LemmyContext>,
 102     request_counter: &mut i32,
 103   ) -> Result<(), LemmyError> {
 104     let community = self.get_community(context, request_counter).await?;
 105     let remove_mod = self
 106       .object
 107       .dereference::<LemmyError>(context, local_instance(context), request_counter)
 108       .await?;
 109
 110     let form = CommunityModeratorForm {
 111       community_id: community.id,
 112       person_id: remove_mod.id,
 113     };
 114     blocking(context.pool(), move |conn| {
 115       CommunityModerator::leave(conn, &form)
 116     })
 117     .await??;
 118
 119     // write mod log
 120     let actor = self
 121       .actor
 122       .dereference::<LemmyError>(context, local_instance(context), request_counter)
 123       .await?;
 124     let form = ModAddCommunityForm {
 125       mod_person_id: actor.id,
 126       other_person_id: remove_mod.id,
 127       community_id: community.id,
 128       removed: Some(true),
 129     };
 130     blocking(context.pool(), move |conn| {
 131       ModAddCommunity::create(conn, &form)
 132     })
 133     .await??;
 134
 135     // TODO: send websocket notification about removed mod
 136     Ok(())
 137   }
 138 }
 139
 140 #[async_trait::async_trait(?Send)]
 141 impl GetCommunity for RemoveMod {
 142   #[tracing::instrument(skip_all)]
 143   async fn get_community(
 144     &self,
 145     context: &LemmyContext,
 146     request_counter: &mut i32,
 147   ) -> Result<ApubCommunity, LemmyError> {
 148     get_community_from_moderators_url(&self.target, context, request_counter).await
 149   }
 150 }