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     };
  59
  60     let activity = AnnouncableActivities::RemoveMod(remove);
  61     let inboxes = vec![removed_mod.shared_inbox_or_inbox()];
  62     send_activity_in_community(activity, actor, community, inboxes, true, context).await
  63   }
  64 }
  65
  66 #[async_trait::async_trait(?Send)]
  67 impl ActivityHandler for RemoveMod {
  68   type DataType = LemmyContext;
  69   type Error = LemmyError;
  70
  71   fn id(&self) -> &Url {
  72     &self.id
  73   }
  74
  75   fn actor(&self) -> &Url {
  76     self.actor.inner()
  77   }
  78
  79   #[tracing::instrument(skip_all)]
  80   async fn verify(
  81     &self,
  82     context: &Data<LemmyContext>,
  83     request_counter: &mut i32,
  84   ) -> Result<(), LemmyError> {
  85     verify_is_public(&self.to, &self.cc)?;
  86     let community = self.get_community(context, request_counter).await?;
  87     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  88     verify_mod_action(
  89       &self.actor,
  90       self.object.inner(),
  91       community.id,
  92       context,
  93       request_counter,
  94     )
  95     .await?;
  96     verify_add_remove_moderator_target(&self.target, &community)?;
  97     Ok(())
  98   }
  99
 100   #[tracing::instrument(skip_all)]
 101   async fn receive(
 102     self,
 103     context: &Data<LemmyContext>,
 104     request_counter: &mut i32,
 105   ) -> Result<(), LemmyError> {
 106     let community = self.get_community(context, request_counter).await?;
 107     let remove_mod = self
 108       .object
 109       .dereference(context, local_instance(context).await, request_counter)
 110       .await?;
 111
 112     let form = CommunityModeratorForm {
 113       community_id: community.id,
 114       person_id: remove_mod.id,
 115     };
 116     CommunityModerator::leave(context.pool(), &form).await?;
 117
 118     // write mod log
 119     let actor = self
 120       .actor
 121       .dereference(context, local_instance(context).await, request_counter)
 122       .await?;
 123     let form = ModAddCommunityForm {
 124       mod_person_id: actor.id,
 125       other_person_id: remove_mod.id,
 126       community_id: community.id,
 127       removed: Some(true),
 128     };
 129     ModAddCommunity::create(context.pool(), &form).await?;
 130
 131     // TODO: send websocket notification about removed mod
 132     Ok(())
 133   }
 134 }
 135
 136 #[async_trait::async_trait(?Send)]
 137 impl GetCommunity for RemoveMod {
 138   #[tracing::instrument(skip_all)]
 139   async fn get_community(
 140     &self,
 141     context: &LemmyContext,
 142     request_counter: &mut i32,
 143   ) -> Result<ApubCommunity, LemmyError> {
 144     get_community_from_moderators_url(&self.target, context, request_counter).await
 145   }
 146 }