2 activities::{verify_is_public, verify_person_in_community},
3 check_is_apub_id_valid,
5 objects::{page::Page, tombstone::Tombstone},
10 use activitystreams::{
11 object::kind::{ImageType, PageType},
14 use chrono::NaiveDateTime;
15 use lemmy_api_common::blocking;
19 values::{MediaTypeHtml, MediaTypeMarkdown},
20 verify::verify_domains_match,
22 use lemmy_db_schema::{
27 post::{Post, PostForm},
32 request::fetch_site_data,
33 utils::{check_slurs, convert_datetime, markdown_to_html, remove_slurs},
36 use lemmy_websocket::LemmyContext;
40 #[derive(Clone, Debug)]
41 pub struct ApubPost(Post);
43 impl Deref for ApubPost {
45 fn deref(&self) -> &Self::Target {
50 impl From<Post> for ApubPost {
51 fn from(p: Post) -> Self {
56 #[async_trait::async_trait(?Send)]
57 impl ApubObject for ApubPost {
58 type DataType = LemmyContext;
60 type TombstoneType = Tombstone;
62 fn last_refreshed_at(&self) -> Option<NaiveDateTime> {
66 async fn read_from_apub_id(
68 context: &LemmyContext,
69 ) -> Result<Option<Self>, LemmyError> {
71 blocking(context.pool(), move |conn| {
72 Post::read_from_apub_id(conn, object_id)
79 async fn delete(self, context: &LemmyContext) -> Result<(), LemmyError> {
81 blocking(context.pool(), move |conn| {
82 Post::update_deleted(conn, self.id, true)
89 // Turn a Lemmy post into an ActivityPub page that can be sent out over the network.
90 async fn into_apub(self, context: &LemmyContext) -> Result<Page, LemmyError> {
91 let creator_id = self.creator_id;
92 let creator = blocking(context.pool(), move |conn| Person::read(conn, creator_id)).await??;
93 let community_id = self.community_id;
94 let community = blocking(context.pool(), move |conn| {
95 Community::read(conn, community_id)
99 let source = self.body.clone().map(|body| Source {
101 media_type: MediaTypeMarkdown::Markdown,
103 let image = self.thumbnail_url.clone().map(|thumb| ImageObject {
104 kind: ImageType::Image,
109 r#type: PageType::Page,
110 id: ObjectId::new(self.ap_id.clone()),
111 attributed_to: ObjectId::new(creator.actor_id),
112 to: vec![community.actor_id.into(), public()],
114 name: self.name.clone(),
115 content: self.body.as_ref().map(|b| markdown_to_html(b)),
116 media_type: Some(MediaTypeHtml::Html),
118 url: self.url.clone().map(|u| u.into()),
120 comments_enabled: Some(!self.locked),
121 sensitive: Some(self.nsfw),
122 stickied: Some(self.stickied),
123 published: Some(convert_datetime(self.published)),
124 updated: self.updated.map(convert_datetime),
125 unparsed: Default::default(),
130 fn to_tombstone(&self) -> Result<Tombstone, LemmyError> {
133 self.updated.unwrap_or(self.published),
139 expected_domain: &Url,
140 context: &LemmyContext,
141 request_counter: &mut i32,
142 ) -> Result<(), LemmyError> {
143 // We can't verify the domain in case of mod action, because the mod may be on a different
144 // instance from the post author.
145 if !page.is_mod_action(context).await? {
146 verify_domains_match(page.id.inner(), expected_domain)?;
149 let community = page.extract_community(context, request_counter).await?;
150 check_is_apub_id_valid(page.id.inner(), community.local, &context.settings())?;
151 verify_person_in_community(&page.attributed_to, &community, context, request_counter).await?;
152 check_slurs(&page.name, &context.settings().slur_regex())?;
153 verify_domains_match(page.attributed_to.inner(), page.id.inner())?;
154 verify_is_public(&page.to, &page.cc)?;
160 context: &LemmyContext,
161 request_counter: &mut i32,
162 ) -> Result<ApubPost, LemmyError> {
165 .dereference(context, request_counter)
167 let community = page.extract_community(context, request_counter).await?;
169 let thumbnail_url: Option<Url> = page.image.map(|i| i.url);
170 let (metadata_res, pictrs_thumbnail) = if let Some(url) = &page.url {
171 fetch_site_data(context.client(), &context.settings(), Some(url)).await
173 (None, thumbnail_url)
175 let (embed_title, embed_description, embed_html) = metadata_res
176 .map(|u| (u.title, u.description, u.html))
177 .unwrap_or((None, None, None));
179 let body_slurs_removed = page
182 .map(|s| remove_slurs(&s.content, &context.settings().slur_regex()));
183 let form = PostForm {
185 url: page.url.map(|u| u.into()),
186 body: body_slurs_removed,
187 creator_id: creator.id,
188 community_id: community.id,
190 locked: page.comments_enabled.map(|e| !e),
191 published: page.published.map(|u| u.naive_local()),
192 updated: page.updated.map(|u| u.naive_local()),
194 nsfw: page.sensitive,
195 stickied: page.stickied,
199 thumbnail_url: pictrs_thumbnail.map(|u| u.into()),
200 ap_id: Some(page.id.into()),
203 let post = blocking(context.pool(), move |conn| Post::upsert(conn, &form)).await??;
211 use crate::objects::{
212 community::tests::parse_lemmy_community,
213 person::tests::parse_lemmy_person,
215 tests::{file_to_json_object, init_context},
217 use serial_test::serial;
221 async fn test_parse_lemmy_post() {
222 let context = init_context();
223 let community = parse_lemmy_community(&context).await;
224 let person = parse_lemmy_person(&context).await;
226 let json = file_to_json_object("assets/lemmy/objects/page.json");
227 let url = Url::parse("https://enterprise.lemmy.ml/post/55143").unwrap();
228 let mut request_counter = 0;
229 ApubPost::verify(&json, &url, &context, &mut request_counter)
232 let post = ApubPost::from_apub(json, &context, &mut request_counter)
236 assert_eq!(post.ap_id, url.into());
237 assert_eq!(post.name, "Post title");
238 assert!(post.body.is_some());
239 assert_eq!(post.body.as_ref().unwrap().len(), 45);
240 assert!(!post.locked);
241 assert!(post.stickied);
242 assert_eq!(request_counter, 0);
244 Post::delete(&*context.pool().get().unwrap(), post.id).unwrap();
245 Person::delete(&*context.pool().get().unwrap(), person.id).unwrap();
246 Community::delete(&*context.pool().get().unwrap(), community.id).unwrap();