3 check_community_deleted_or_removed,
4 community::send_activity_in_community,
8 verify_person_in_community,
10 activity_lists::AnnouncableActivities,
11 insert_received_activity,
12 objects::{community::ApubCommunity, person::ApubPerson, post::ApubPost},
14 activities::{create_or_update::page::CreateOrUpdatePage, CreateOrUpdateType},
19 use activitypub_federation::{
22 protocol::verification::{verify_domains_match, verify_urls_match},
23 traits::{ActivityHandler, Actor, Object},
25 use lemmy_api_common::{
26 context::LemmyContext,
27 post::{EditPost, PostResponse},
29 use lemmy_db_schema::{
30 aggregates::structs::PostAggregates,
35 post::{Post, PostLike, PostLikeForm},
37 traits::{Crud, Likeable},
39 use lemmy_utils::error::{LemmyError, LemmyErrorType};
42 #[async_trait::async_trait]
43 impl SendActivity for EditPost {
44 type Response = PostResponse;
46 async fn send_activity(
48 response: &Self::Response,
49 context: &Data<LemmyContext>,
50 ) -> Result<(), LemmyError> {
51 CreateOrUpdatePage::send(
52 response.post_view.post.clone(),
53 response.post_view.creator.id,
54 CreateOrUpdateType::Update,
55 context.reset_request_count(),
61 impl CreateOrUpdatePage {
62 pub(crate) async fn new(
65 community: &ApubCommunity,
66 kind: CreateOrUpdateType,
67 context: &Data<LemmyContext>,
68 ) -> Result<CreateOrUpdatePage, LemmyError> {
69 let id = generate_activity_id(
71 &context.settings().get_protocol_and_hostname(),
73 Ok(CreateOrUpdatePage {
74 actor: actor.id().into(),
76 object: post.into_json(context).await?,
77 cc: vec![community.id()],
80 audience: Some(community.id().into()),
84 #[tracing::instrument(skip_all)]
85 pub(crate) async fn send(
88 kind: CreateOrUpdateType,
89 context: Data<LemmyContext>,
90 ) -> Result<(), LemmyError> {
91 let post = ApubPost(post);
92 let community_id = post.community_id;
93 let person: ApubPerson = Person::read(&mut context.pool(), person_id).await?.into();
94 let community: ApubCommunity = Community::read(&mut context.pool(), community_id)
98 let create_or_update =
99 CreateOrUpdatePage::new(post, &person, &community, kind, &context).await?;
100 let is_mod_action = create_or_update.object.is_mod_action(&context).await?;
101 let activity = AnnouncableActivities::CreateOrUpdatePost(create_or_update);
102 send_activity_in_community(
115 #[async_trait::async_trait]
116 impl ActivityHandler for CreateOrUpdatePage {
117 type DataType = LemmyContext;
118 type Error = LemmyError;
120 fn id(&self) -> &Url {
124 fn actor(&self) -> &Url {
128 #[tracing::instrument(skip_all)]
129 async fn verify(&self, context: &Data<LemmyContext>) -> Result<(), LemmyError> {
130 insert_received_activity(&self.id, context).await?;
131 verify_is_public(&self.to, &self.cc)?;
132 let community = self.community(context).await?;
133 verify_person_in_community(&self.actor, &community, context).await?;
134 check_community_deleted_or_removed(&community)?;
137 CreateOrUpdateType::Create => {
138 verify_domains_match(self.actor.inner(), self.object.id.inner())?;
139 verify_urls_match(self.actor.inner(), self.object.creator()?.inner())?;
140 // Check that the post isnt locked, as that isnt possible for newly created posts.
141 // However, when fetching a remote post we generate a new create activity with the current
142 // locked value, so this check may fail. So only check if its a local community,
143 // because then we will definitely receive all create and update activities separately.
144 let is_locked = self.object.comments_enabled == Some(false);
145 if community.local && is_locked {
146 return Err(LemmyErrorType::NewPostCannotBeLocked)?;
149 CreateOrUpdateType::Update => {
150 let is_mod_action = self.object.is_mod_action(context).await?;
152 verify_mod_action(&self.actor, self.object.id.inner(), community.id, context).await?;
154 verify_domains_match(self.actor.inner(), self.object.id.inner())?;
155 verify_urls_match(self.actor.inner(), self.object.creator()?.inner())?;
159 ApubPost::verify(&self.object, self.actor.inner(), context).await?;
163 #[tracing::instrument(skip_all)]
164 async fn receive(self, context: &Data<LemmyContext>) -> Result<(), LemmyError> {
165 let post = ApubPost::from_json(self.object, context).await?;
167 // author likes their own post by default
168 let like_form = PostLikeForm {
170 person_id: post.creator_id,
173 PostLike::like(&mut context.pool(), &like_form).await?;
175 // Calculate initial hot_rank for post
176 PostAggregates::update_hot_rank(&mut context.pool(), post.id).await?;