lemmy/crates/apub/src/http/community.rs

151 lines
5.1 KiB
Rust

use crate::{
activities::{community::announce::GetCommunity, verify_person_in_community},
activity_lists::GroupInboxActivities,
collections::{
community_moderators::ApubCommunityModerators,
community_outbox::ApubCommunityOutbox,
CommunityContext,
},
context::WithContext,
generate_outbox_url,
http::{
create_apub_response,
create_apub_tombstone_response,
payload_to_string,
receive_activity,
ActivityCommonFields,
},
objects::community::ApubCommunity,
protocol::{
activities::community::announce::AnnounceActivity,
collections::group_followers::GroupFollowers,
},
};
use actix_web::{web, web::Payload, HttpRequest, HttpResponse};
use lemmy_api_common::utils::blocking;
use lemmy_apub_lib::{object_id::ObjectId, traits::ApubObject};
use lemmy_db_schema::{source::community::Community, traits::ApubActor};
use lemmy_utils::LemmyError;
use lemmy_websocket::LemmyContext;
use serde::Deserialize;
use tracing::info;
#[derive(Deserialize)]
pub(crate) struct CommunityQuery {
community_name: String,
}
/// Return the ActivityPub json representation of a local community over HTTP.
#[tracing::instrument(skip_all)]
pub(crate) async fn get_apub_community_http(
info: web::Path<CommunityQuery>,
context: web::Data<LemmyContext>,
) -> Result<HttpResponse, 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.into_apub(&**context).await?;
Ok(create_apub_response(&apub))
} else {
Ok(create_apub_tombstone_response(&community.to_tombstone()?))
}
}
/// Handler for all incoming receive to community inboxes.
#[tracing::instrument(skip_all)]
pub async fn community_inbox(
request: HttpRequest,
payload: Payload,
_path: web::Path<String>,
context: web::Data<LemmyContext>,
) -> Result<HttpResponse, LemmyError> {
let unparsed = payload_to_string(payload).await?;
info!("Received community inbox activity {}", unparsed);
let activity_data: ActivityCommonFields = serde_json::from_str(&unparsed)?;
let activity = serde_json::from_str::<WithContext<GroupInboxActivities>>(&unparsed)?;
receive_group_inbox(activity.inner(), activity_data, request, &context).await?;
Ok(HttpResponse::Ok().finish())
}
pub(in crate::http) async fn receive_group_inbox(
activity: GroupInboxActivities,
activity_data: ActivityCommonFields,
request: HttpRequest,
context: &LemmyContext,
) -> Result<HttpResponse, LemmyError> {
let actor_id = ObjectId::new(activity_data.actor.clone());
let res = receive_activity(request, activity.clone(), activity_data, context).await?;
if let GroupInboxActivities::AnnouncableActivities(announcable) = activity {
// Ignore failures in get_community(). those happen because Delete/PrivateMessage is not in a
// community, but looks identical to Delete/Post or Delete/Comment which are in a community.
let community = announcable.get_community(context, &mut 0).await;
if let Ok(community) = community {
if community.local {
verify_person_in_community(&actor_id, &community, context, &mut 0).await?;
AnnounceActivity::send(*announcable, &community, context).await?;
}
}
}
Ok(res)
}
/// Returns an empty followers collection, only populating the size (for privacy).
pub(crate) async fn get_apub_community_followers(
info: web::Path<CommunityQuery>,
context: web::Data<LemmyContext>,
) -> Result<HttpResponse, LemmyError> {
let community = blocking(context.pool(), move |conn| {
Community::read_from_name(conn, &info.community_name)
})
.await??;
let followers = GroupFollowers::new(community, &context).await?;
Ok(create_apub_response(&followers))
}
/// 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<CommunityQuery>,
context: web::Data<LemmyContext>,
) -> Result<HttpResponse, 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)?);
let outbox_data = CommunityContext(community.into(), context.get_ref().clone());
let outbox: ApubCommunityOutbox = id
.dereference(&outbox_data, context.client(), &mut 0)
.await?;
Ok(create_apub_response(&outbox.into_apub(&outbox_data).await?))
}
#[tracing::instrument(skip_all)]
pub(crate) async fn get_apub_community_moderators(
info: web::Path<CommunityQuery>,
context: web::Data<LemmyContext>,
) -> Result<HttpResponse, 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)?);
let outbox_data = CommunityContext(community, context.get_ref().clone());
let moderators: ApubCommunityModerators = id
.dereference(&outbox_data, context.client(), &mut 0)
.await?;
Ok(create_apub_response(
&moderators.into_apub(&outbox_data).await?,
))
}