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

   1 use crate::{
   2   activities::{
   3     community::send_activity_in_community,
   4     generate_activity_id,
   5     verify_is_public,
   6     verify_mod_action,
   7     verify_person_in_community,
   8   },
   9   activity_lists::AnnouncableActivities,
  10   insert_received_activity,
  11   objects::{community::ApubCommunity, person::ApubPerson, post::ApubPost},
  12   protocol::{
  13     activities::community::{collection_add::CollectionAdd, collection_remove::CollectionRemove},
  14     InCommunity,
  15   },
  16 };
  17 use activitypub_federation::{
  18   config::Data,
  19   fetch::object_id::ObjectId,
  20   kinds::{activity::AddType, public},
  21   traits::{ActivityHandler, Actor},
  22 };
  23 use lemmy_api_common::{
  24   context::LemmyContext,
  25   utils::{generate_featured_url, generate_moderators_url},
  26 };
  27 use lemmy_db_schema::{
  28   impls::community::CollectionType,
  29   newtypes::{CommunityId, PersonId},
  30   source::{
  31     community::{Community, CommunityModerator, CommunityModeratorForm},
  32     moderator::{ModAddCommunity, ModAddCommunityForm},
  33     person::Person,
  34     post::{Post, PostUpdateForm},
  35   },
  36   traits::{Crud, Joinable},
  37 };
  38 use lemmy_utils::error::LemmyError;
  39 use url::Url;
  40
  41 impl CollectionAdd {
  42   #[tracing::instrument(skip_all)]
  43   pub async fn send_add_mod(
  44     community: &ApubCommunity,
  45     added_mod: &ApubPerson,
  46     actor: &ApubPerson,
  47     context: &Data<LemmyContext>,
  48   ) -> Result<(), LemmyError> {
  49     let id = generate_activity_id(
  50       AddType::Add,
  51       &context.settings().get_protocol_and_hostname(),
  52     )?;
  53     let add = CollectionAdd {
  54       actor: actor.id().into(),
  55       to: vec![public()],
  56       object: added_mod.id(),
  57       target: generate_moderators_url(&community.actor_id)?.into(),
  58       cc: vec![community.id()],
  59       kind: AddType::Add,
  60       id: id.clone(),
  61       audience: Some(community.id().into()),
  62     };
  63
  64     let activity = AnnouncableActivities::CollectionAdd(add);
  65     let inboxes = vec![added_mod.shared_inbox_or_inbox()];
  66     send_activity_in_community(activity, actor, community, inboxes, true, context).await
  67   }
  68
  69   pub async fn send_add_featured_post(
  70     community: &ApubCommunity,
  71     featured_post: &ApubPost,
  72     actor: &ApubPerson,
  73     context: &Data<LemmyContext>,
  74   ) -> Result<(), LemmyError> {
  75     let id = generate_activity_id(
  76       AddType::Add,
  77       &context.settings().get_protocol_and_hostname(),
  78     )?;
  79     let add = CollectionAdd {
  80       actor: actor.id().into(),
  81       to: vec![public()],
  82       object: featured_post.ap_id.clone().into(),
  83       target: generate_featured_url(&community.actor_id)?.into(),
  84       cc: vec![community.id()],
  85       kind: AddType::Add,
  86       id: id.clone(),
  87       audience: Some(community.id().into()),
  88     };
  89     let activity = AnnouncableActivities::CollectionAdd(add);
  90     send_activity_in_community(activity, actor, community, vec![], true, context).await
  91   }
  92 }
  93
  94 #[async_trait::async_trait]
  95 impl ActivityHandler for CollectionAdd {
  96   type DataType = LemmyContext;
  97   type Error = LemmyError;
  98
  99   fn id(&self) -> &Url {
 100     &self.id
 101   }
 102
 103   fn actor(&self) -> &Url {
 104     self.actor.inner()
 105   }
 106
 107   #[tracing::instrument(skip_all)]
 108   async fn verify(&self, context: &Data<Self::DataType>) -> Result<(), LemmyError> {
 109     insert_received_activity(&self.id, context).await?;
 110     verify_is_public(&self.to, &self.cc)?;
 111     let community = self.community(context).await?;
 112     verify_person_in_community(&self.actor, &community, context).await?;
 113     verify_mod_action(&self.actor, &self.object, community.id, context).await?;
 114     Ok(())
 115   }
 116
 117   #[tracing::instrument(skip_all)]
 118   async fn receive(self, context: &Data<Self::DataType>) -> Result<(), LemmyError> {
 119     let (community, collection_type) =
 120       Community::get_by_collection_url(&mut context.pool(), &self.target.into()).await?;
 121     match collection_type {
 122       CollectionType::Moderators => {
 123         let new_mod = ObjectId::<ApubPerson>::from(self.object)
 124           .dereference(context)
 125           .await?;
 126
 127         // If we had to refetch the community while parsing the activity, then the new mod has already
 128         // been added. Skip it here as it would result in a duplicate key error.
 129         let new_mod_id = new_mod.id;
 130         let moderated_communities =
 131           CommunityModerator::get_person_moderated_communities(&mut context.pool(), new_mod_id)
 132             .await?;
 133         if !moderated_communities.contains(&community.id) {
 134           let form = CommunityModeratorForm {
 135             community_id: community.id,
 136             person_id: new_mod.id,
 137           };
 138           CommunityModerator::join(&mut context.pool(), &form).await?;
 139
 140           // write mod log
 141           let actor = self.actor.dereference(context).await?;
 142           let form = ModAddCommunityForm {
 143             mod_person_id: actor.id,
 144             other_person_id: new_mod.id,
 145             community_id: community.id,
 146             removed: Some(false),
 147           };
 148           ModAddCommunity::create(&mut context.pool(), &form).await?;
 149         }
 150         // TODO: send websocket notification about added mod
 151       }
 152       CollectionType::Featured => {
 153         let post = ObjectId::<ApubPost>::from(self.object)
 154           .dereference(context)
 155           .await?;
 156         let form = PostUpdateForm::builder()
 157           .featured_community(Some(true))
 158           .build();
 159         Post::update(&mut context.pool(), post.id, &form).await?;
 160       }
 161     }
 162     Ok(())
 163   }
 164 }
 165
 166 pub(crate) async fn send_add_mod_to_community(
 167   actor: Person,
 168   community_id: CommunityId,
 169   updated_mod_id: PersonId,
 170   added: bool,
 171   context: Data<LemmyContext>,
 172 ) -> Result<(), LemmyError> {
 173   let actor: ApubPerson = actor.into();
 174   let community: ApubCommunity = Community::read(&mut context.pool(), community_id)
 175     .await?
 176     .into();
 177   let updated_mod: ApubPerson = Person::read(&mut context.pool(), updated_mod_id)
 178     .await?
 179     .into();
 180   if added {
 181     CollectionAdd::send_add_mod(&community, &updated_mod, &actor, &context).await
 182   } else {
 183     CollectionRemove::send_remove_mod(&community, &updated_mod, &actor, &context).await
 184   }
 185 }
 186
 187 pub(crate) async fn send_feature_post(
 188   post: Post,
 189   actor: Person,
 190   featured: bool,
 191   context: Data<LemmyContext>,
 192 ) -> Result<(), LemmyError> {
 193   let actor: ApubPerson = actor.into();
 194   let post: ApubPost = post.into();
 195   let community = Community::read(&mut context.pool(), post.community_id)
 196     .await?
 197     .into();
 198   if featured {
 199     CollectionAdd::send_add_featured_post(&community, &post, &actor, &context).await
 200   } else {
 201     CollectionRemove::send_remove_featured_post(&community, &post, &actor, &context).await
 202   }
 203 }