3 check_community_deleted_or_removed,
4 community::{announce::GetCommunity, send_activity_in_community},
8 verify_person_in_community,
10 activity_lists::AnnouncableActivities,
11 objects::{community::ApubCommunity, person::ApubPerson, post::ApubPost},
12 protocol::activities::{create_or_update::post::CreateOrUpdatePost, CreateOrUpdateType},
15 use activitypub_federation::{
16 core::object_id::ObjectId,
18 traits::{ActivityHandler, ApubObject},
19 utils::{verify_domains_match, verify_urls_match},
21 use activitystreams_kinds::public;
22 use lemmy_db_schema::{
25 post::{PostLike, PostLikeForm},
27 traits::{Crud, Likeable},
29 use lemmy_utils::error::LemmyError;
30 use lemmy_websocket::{send::send_post_ws_message, LemmyContext, UserOperationCrud};
33 impl CreateOrUpdatePost {
34 pub(crate) async fn new(
37 community: &ApubCommunity,
38 kind: CreateOrUpdateType,
39 context: &LemmyContext,
40 ) -> Result<CreateOrUpdatePost, LemmyError> {
41 let id = generate_activity_id(
43 &context.settings().get_protocol_and_hostname(),
45 Ok(CreateOrUpdatePost {
46 actor: ObjectId::new(actor.actor_id()),
48 object: post.into_apub(context).await?,
49 cc: vec![community.actor_id()],
55 #[tracing::instrument(skip_all)]
59 kind: CreateOrUpdateType,
60 context: &LemmyContext,
61 ) -> Result<(), LemmyError> {
62 let community_id = post.community_id;
63 let community: ApubCommunity = Community::read(context.pool(), community_id).await?.into();
65 let create_or_update = CreateOrUpdatePost::new(post, actor, &community, kind, context).await?;
66 let is_mod_action = create_or_update.object.is_mod_action(context).await?;
67 let activity = AnnouncableActivities::CreateOrUpdatePost(create_or_update);
68 send_activity_in_community(activity, actor, &community, vec![], is_mod_action, context).await?;
73 #[async_trait::async_trait(?Send)]
74 impl ActivityHandler for CreateOrUpdatePost {
75 type DataType = LemmyContext;
76 type Error = LemmyError;
78 fn id(&self) -> &Url {
82 fn actor(&self) -> &Url {
86 #[tracing::instrument(skip_all)]
89 context: &Data<LemmyContext>,
90 request_counter: &mut i32,
91 ) -> Result<(), LemmyError> {
92 verify_is_public(&self.to, &self.cc)?;
93 let community = self.get_community(context, request_counter).await?;
94 verify_person_in_community(&self.actor, &community, context, request_counter).await?;
95 check_community_deleted_or_removed(&community)?;
98 CreateOrUpdateType::Create => {
99 verify_domains_match(self.actor.inner(), self.object.id.inner())?;
100 verify_urls_match(self.actor.inner(), self.object.creator()?.inner())?;
101 // Check that the post isnt locked or stickied, as that isnt possible for newly created posts.
102 // However, when fetching a remote post we generate a new create activity with the current
103 // locked/stickied value, so this check may fail. So only check if its a local community,
104 // because then we will definitely receive all create and update activities separately.
105 let is_stickied_or_locked =
106 self.object.stickied == Some(true) || self.object.comments_enabled == Some(false);
107 if community.local && is_stickied_or_locked {
108 return Err(LemmyError::from_message(
109 "New post cannot be stickied or locked",
113 CreateOrUpdateType::Update => {
114 let is_mod_action = self.object.is_mod_action(context).await?;
118 self.object.id.inner(),
125 verify_domains_match(self.actor.inner(), self.object.id.inner())?;
126 verify_urls_match(self.actor.inner(), self.object.creator()?.inner())?;
130 ApubPost::verify(&self.object, self.actor.inner(), context, request_counter).await?;
134 #[tracing::instrument(skip_all)]
137 context: &Data<LemmyContext>,
138 request_counter: &mut i32,
139 ) -> Result<(), LemmyError> {
140 let post = ApubPost::from_apub(self.object, context, request_counter).await?;
142 // author likes their own post by default
143 let like_form = PostLikeForm {
145 person_id: post.creator_id,
148 PostLike::like(context.pool(), &like_form).await?;
150 let notif_type = match self.kind {
151 CreateOrUpdateType::Create => UserOperationCrud::CreatePost,
152 CreateOrUpdateType::Update => UserOperationCrud::EditPost,
154 send_post_ws_message(post.id, notif_type, None, None, context).await?;
159 #[async_trait::async_trait(?Send)]
160 impl GetCommunity for CreateOrUpdatePost {
161 #[tracing::instrument(skip_all)]
162 async fn get_community(
164 context: &LemmyContext,
165 request_counter: &mut i32,
166 ) -> Result<ApubCommunity, LemmyError> {
169 .extract_community(context, request_counter)