use crate::{ activities::{ community::announce::{AnnouncableActivities, AnnounceActivity}, extract_community, following::{follow::FollowCommunity, undo::UndoFollowCommunity}, report::Report, }, collections::{ community_moderators::ApubCommunityModerators, community_outbox::ApubCommunityOutbox, CommunityContext, }, context::lemmy_context, fetcher::object_id::ObjectId, generate_outbox_url, http::{ create_apub_response, create_apub_tombstone_response, payload_to_string, receive_activity, }, objects::community::ApubCommunity, }; use activitystreams::{ base::BaseExt, collection::{CollectionExt, UnorderedCollection}, }; use actix_web::{body::Body, web, web::Payload, HttpRequest, HttpResponse}; use lemmy_api_common::blocking; use lemmy_apub_lib::traits::{ActivityFields, ActivityHandler, ApubObject}; use lemmy_db_schema::source::community::Community; use lemmy_db_views_actor::community_follower_view::CommunityFollowerView; use lemmy_utils::LemmyError; use lemmy_websocket::LemmyContext; use log::trace; use serde::{Deserialize, Serialize}; #[derive(Deserialize)] pub(crate) struct CommunityQuery { community_name: String, } /// Return the ActivityPub json representation of a local community over HTTP. pub(crate) async fn get_apub_community_http( info: web::Path, context: web::Data, ) -> Result, LemmyError> { let community: ApubCommunity = blocking(context.pool(), move |conn| { Community::read_from_name(conn, &info.community_name) }) .await?? .into(); if !community.deleted { let apub = community.to_apub(&**context).await?; Ok(create_apub_response(&apub)) } else { Ok(create_apub_tombstone_response(&community.to_tombstone()?)) } } #[derive(Clone, Debug, Deserialize, Serialize, ActivityHandler, ActivityFields)] #[serde(untagged)] #[activity_handler(LemmyContext)] pub enum GroupInboxActivities { FollowCommunity(FollowCommunity), UndoFollowCommunity(UndoFollowCommunity), AnnouncableActivities(AnnouncableActivities), Report(Report), } /// Handler for all incoming receive to community inboxes. pub async fn community_inbox( request: HttpRequest, payload: Payload, _path: web::Path, context: web::Data, ) -> Result { let unparsed = payload_to_string(payload).await?; trace!("Received community inbox activity {}", unparsed); let activity = serde_json::from_str::(&unparsed)?; receive_group_inbox(activity.clone(), request, &context).await?; Ok(HttpResponse::Ok().finish()) } pub(in crate::http) async fn receive_group_inbox( activity: GroupInboxActivities, request: HttpRequest, context: &LemmyContext, ) -> Result { let res = receive_activity(request, activity.clone(), context).await; if let GroupInboxActivities::AnnouncableActivities(announcable) = activity.clone() { let community = extract_community(&announcable.cc(), context, &mut 0).await?; if community.local { AnnounceActivity::send(announcable, &community, vec![], context).await?; } } res } /// Returns an empty followers collection, only populating the size (for privacy). pub(crate) async fn get_apub_community_followers( info: web::Path, context: web::Data, ) -> Result, LemmyError> { let community = blocking(context.pool(), move |conn| { Community::read_from_name(conn, &info.community_name) }) .await??; let community_id = community.id; let community_followers = blocking(context.pool(), move |conn| { CommunityFollowerView::for_community(conn, community_id) }) .await??; let mut collection = UnorderedCollection::new(); collection .set_many_contexts(lemmy_context()) .set_id(community.followers_url.into()) .set_total_items(community_followers.len() as u64); Ok(create_apub_response(&collection)) } /// Returns the community outbox, which is populated by a maximum of 20 posts (but no other /// activites like votes or comments). pub(crate) async fn get_apub_community_outbox( info: web::Path, context: web::Data, ) -> Result, LemmyError> { let community = blocking(context.pool(), move |conn| { Community::read_from_name(conn, &info.community_name) }) .await??; let id = ObjectId::new(generate_outbox_url(&community.actor_id)?.into_inner()); let outbox_data = CommunityContext(community.into(), context.get_ref().clone()); let outbox: ApubCommunityOutbox = id.dereference(&outbox_data, &mut 0).await?; Ok(create_apub_response(&outbox.to_apub(&outbox_data).await?)) } pub(crate) async fn get_apub_community_moderators( info: web::Path, context: web::Data, ) -> Result, LemmyError> { let community: ApubCommunity = blocking(context.pool(), move |conn| { Community::read_from_name(conn, &info.community_name) }) .await?? .into(); let id = ObjectId::new(generate_outbox_url(&community.actor_id)?.into_inner()); let outbox_data = CommunityContext(community, context.get_ref().clone()); let moderators: ApubCommunityModerators = id.dereference(&outbox_data, &mut 0).await?; Ok(create_apub_response( &moderators.to_apub(&outbox_data).await?, )) }