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