3 check_community_deleted_or_removed,
4 community::send_activity_in_community,
8 verify_person_in_community,
10 activity_lists::AnnouncableActivities,
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::{CreatePost, 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 CreatePost {
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,
53 response.post_view.creator.id,
54 CreateOrUpdateType::Create,
61 #[async_trait::async_trait]
62 impl SendActivity for EditPost {
63 type Response = PostResponse;
65 async fn send_activity(
67 response: &Self::Response,
68 context: &Data<LemmyContext>,
69 ) -> Result<(), LemmyError> {
70 CreateOrUpdatePage::send(
71 &response.post_view.post,
72 response.post_view.creator.id,
73 CreateOrUpdateType::Update,
80 impl CreateOrUpdatePage {
81 pub(crate) async fn new(
84 community: &ApubCommunity,
85 kind: CreateOrUpdateType,
86 context: &Data<LemmyContext>,
87 ) -> Result<CreateOrUpdatePage, LemmyError> {
88 let id = generate_activity_id(
90 &context.settings().get_protocol_and_hostname(),
92 Ok(CreateOrUpdatePage {
93 actor: actor.id().into(),
95 object: post.into_json(context).await?,
96 cc: vec![community.id()],
99 audience: Some(community.id().into()),
103 #[tracing::instrument(skip_all)]
104 pub(crate) async fn send(
107 kind: CreateOrUpdateType,
108 context: &Data<LemmyContext>,
109 ) -> Result<(), LemmyError> {
110 let post = ApubPost(post.clone());
111 let community_id = post.community_id;
112 let person: ApubPerson = Person::read(context.pool(), person_id).await?.into();
113 let community: ApubCommunity = Community::read(context.pool(), community_id).await?.into();
115 let create_or_update =
116 CreateOrUpdatePage::new(post, &person, &community, kind, context).await?;
117 let is_mod_action = create_or_update.object.is_mod_action(context).await?;
118 let activity = AnnouncableActivities::CreateOrUpdatePost(create_or_update);
119 send_activity_in_community(
132 #[async_trait::async_trait]
133 impl ActivityHandler for CreateOrUpdatePage {
134 type DataType = LemmyContext;
135 type Error = LemmyError;
137 fn id(&self) -> &Url {
141 fn actor(&self) -> &Url {
145 #[tracing::instrument(skip_all)]
146 async fn verify(&self, context: &Data<LemmyContext>) -> Result<(), LemmyError> {
147 verify_is_public(&self.to, &self.cc)?;
148 let community = self.community(context).await?;
149 verify_person_in_community(&self.actor, &community, context).await?;
150 check_community_deleted_or_removed(&community)?;
153 CreateOrUpdateType::Create => {
154 verify_domains_match(self.actor.inner(), self.object.id.inner())?;
155 verify_urls_match(self.actor.inner(), self.object.creator()?.inner())?;
156 // Check that the post isnt locked, as that isnt possible for newly created posts.
157 // However, when fetching a remote post we generate a new create activity with the current
158 // locked value, so this check may fail. So only check if its a local community,
159 // because then we will definitely receive all create and update activities separately.
160 let is_locked = self.object.comments_enabled == Some(false);
161 if community.local && is_locked {
162 return Err(LemmyErrorType::NewPostCannotBeLocked)?;
165 CreateOrUpdateType::Update => {
166 let is_mod_action = self.object.is_mod_action(context).await?;
168 verify_mod_action(&self.actor, self.object.id.inner(), community.id, context).await?;
170 verify_domains_match(self.actor.inner(), self.object.id.inner())?;
171 verify_urls_match(self.actor.inner(), self.object.creator()?.inner())?;
175 ApubPost::verify(&self.object, self.actor.inner(), context).await?;
179 #[tracing::instrument(skip_all)]
180 async fn receive(self, context: &Data<LemmyContext>) -> Result<(), LemmyError> {
181 insert_activity(&self.id, &self, false, false, context).await?;
182 let post = ApubPost::from_json(self.object, context).await?;
184 // author likes their own post by default
185 let like_form = PostLikeForm {
187 person_id: post.creator_id,
190 PostLike::like(context.pool(), &like_form).await?;
192 // Calculate initial hot_rank for post
193 PostAggregates::update_hot_rank(context.pool(), post.id).await?;