2 activities::{generate_activity_id, send_lemmy_activity, verify_activity, verify_is_public},
3 activity_lists::AnnouncableActivities,
4 http::ActivityCommonFields,
6 objects::community::ApubCommunity,
7 protocol::activities::{community::announce::AnnounceActivity, CreateOrUpdateType},
9 use activitystreams_kinds::{activity::AnnounceType, public};
13 traits::{ActivityHandler, ActorType},
15 use lemmy_utils::LemmyError;
16 use lemmy_websocket::LemmyContext;
19 #[async_trait::async_trait(?Send)]
20 pub(crate) trait GetCommunity {
21 async fn get_community(
23 context: &LemmyContext,
24 request_counter: &mut i32,
25 ) -> Result<ApubCommunity, LemmyError>;
28 impl AnnounceActivity {
30 object: AnnouncableActivities,
31 community: &ApubCommunity,
32 context: &LemmyContext,
33 ) -> Result<AnnounceActivity, LemmyError> {
35 actor: ObjectId::new(community.actor_id()),
38 cc: vec![community.followers_url.clone().into()],
39 kind: AnnounceType::Announce,
40 id: generate_activity_id(
41 &AnnounceType::Announce,
42 &context.settings().get_protocol_and_hostname(),
44 unparsed: Default::default(),
48 #[tracing::instrument(skip_all)]
50 object: AnnouncableActivities,
51 community: &ApubCommunity,
52 context: &LemmyContext,
53 ) -> Result<(), LemmyError> {
54 let announce = AnnounceActivity::new(object.clone(), community, context)?;
55 let inboxes = community.get_follower_inboxes(context).await?;
66 // Pleroma and Mastodon can't handle activities like Announce/Create/Page. So for
67 // compatibility, we also send Announce/Page so that they can follow Lemmy communities.
68 use AnnouncableActivities::*;
69 let object = match object {
70 CreateOrUpdatePost(c) if c.kind == CreateOrUpdateType::Create => Page(c.object),
73 let announce_compat = AnnounceActivity::new(object, community, context)?;
87 #[async_trait::async_trait(?Send)]
88 impl ActivityHandler for AnnounceActivity {
89 type DataType = LemmyContext;
91 #[tracing::instrument(skip_all)]
94 context: &Data<LemmyContext>,
95 request_counter: &mut i32,
96 ) -> Result<(), LemmyError> {
97 verify_is_public(&self.to, &self.cc)?;
98 verify_activity(&self.id, self.actor.inner(), &context.settings())?;
99 self.object.verify(context, request_counter).await?;
103 #[tracing::instrument(skip_all)]
106 context: &Data<LemmyContext>,
107 request_counter: &mut i32,
108 ) -> Result<(), LemmyError> {
109 // TODO: this can probably be implemented in a cleaner way
111 // Dont insert these into activities table, as they are not activities.
112 AnnouncableActivities::Page(_) => {}
114 let object_value = serde_json::to_value(&self.object)?;
115 let object_data: ActivityCommonFields = serde_json::from_value(object_value.to_owned())?;
118 insert_activity(&object_data.id, object_value, false, true, context.pool()).await?;
121 "Received duplicate activity in announce {}",
122 object_data.id.to_string()
128 self.object.receive(context, request_counter).await