2 activities::{verify_is_public, verify_person_in_community},
3 check_apub_id_valid_with_strictness,
6 objects::{read_from_string_or_source_opt, verify_is_remote_object},
9 page::{Attachment, AttributedTo, Page, PageType},
16 use activitypub_federation::{
17 core::object_id::ObjectId,
18 deser::values::MediaTypeMarkdownOrHtml,
20 utils::verify_domains_match,
22 use activitystreams_kinds::public;
23 use chrono::NaiveDateTime;
24 use lemmy_api_common::{request::fetch_site_data, utils::local_site_opt_to_slur_regex};
25 use lemmy_db_schema::{
29 local_site::LocalSite,
30 moderator::{ModLockPost, ModLockPostForm, ModStickyPost, ModStickyPostForm},
32 post::{Post, PostInsertForm, PostUpdateForm},
38 utils::{check_slurs, convert_datetime, markdown_to_html, remove_slurs},
40 use lemmy_websocket::LemmyContext;
44 #[derive(Clone, Debug)]
45 pub struct ApubPost(Post);
47 impl Deref for ApubPost {
49 fn deref(&self) -> &Self::Target {
54 impl From<Post> for ApubPost {
55 fn from(p: Post) -> Self {
60 #[async_trait::async_trait(?Send)]
61 impl ApubObject for ApubPost {
62 type DataType = LemmyContext;
65 type Error = LemmyError;
67 fn last_refreshed_at(&self) -> Option<NaiveDateTime> {
71 #[tracing::instrument(skip_all)]
72 async fn read_from_apub_id(
74 context: &LemmyContext,
75 ) -> Result<Option<Self>, LemmyError> {
77 Post::read_from_apub_id(context.pool(), object_id)
83 #[tracing::instrument(skip_all)]
84 async fn delete(self, context: &LemmyContext) -> Result<(), LemmyError> {
86 let form = PostUpdateForm::builder().deleted(Some(true)).build();
87 Post::update(context.pool(), self.id, &form).await?;
92 // Turn a Lemmy post into an ActivityPub page that can be sent out over the network.
93 #[tracing::instrument(skip_all)]
94 async fn into_apub(self, context: &LemmyContext) -> Result<Page, LemmyError> {
95 let creator_id = self.creator_id;
96 let creator = Person::read(context.pool(), creator_id).await?;
97 let community_id = self.community_id;
98 let community = Community::read(context.pool(), community_id).await?;
99 let language = LanguageTag::new_single(self.language_id, context.pool()).await?;
102 kind: PageType::Page,
103 id: ObjectId::new(self.ap_id.clone()),
104 attributed_to: AttributedTo::Lemmy(ObjectId::new(creator.actor_id)),
105 to: vec![community.actor_id.into(), public()],
107 name: self.name.clone(),
108 content: self.body.as_ref().map(|b| markdown_to_html(b)),
109 media_type: Some(MediaTypeMarkdownOrHtml::Html),
110 source: self.body.clone().map(Source::new),
111 url: self.url.clone().map(Into::into),
112 attachment: self.url.clone().map(Attachment::new).into_iter().collect(),
113 image: self.thumbnail_url.clone().map(ImageObject::new),
114 comments_enabled: Some(!self.locked),
115 sensitive: Some(self.nsfw),
116 stickied: Some(self.stickied),
118 published: Some(convert_datetime(self.published)),
119 updated: self.updated.map(convert_datetime),
124 #[tracing::instrument(skip_all)]
127 expected_domain: &Url,
128 context: &LemmyContext,
129 request_counter: &mut i32,
130 ) -> Result<(), LemmyError> {
131 // We can't verify the domain in case of mod action, because the mod may be on a different
132 // instance from the post author.
133 if !page.is_mod_action(context).await? {
134 verify_domains_match(page.id.inner(), expected_domain)?;
135 verify_is_remote_object(page.id.inner(), context.settings())?;
138 let local_site_data = fetch_local_site_data(context.pool()).await?;
140 let community = page.extract_community(context, request_counter).await?;
141 check_apub_id_valid_with_strictness(
147 verify_person_in_community(&page.creator()?, &community, context, request_counter).await?;
149 let slur_regex = &local_site_opt_to_slur_regex(&local_site_data.local_site);
150 check_slurs(&page.name, slur_regex)?;
152 verify_domains_match(page.creator()?.inner(), page.id.inner())?;
153 verify_is_public(&page.to, &page.cc)?;
157 #[tracing::instrument(skip_all)]
160 context: &LemmyContext,
161 request_counter: &mut i32,
162 ) -> Result<ApubPost, LemmyError> {
165 .dereference(context, local_instance(context).await, request_counter)
167 let community = page.extract_community(context, request_counter).await?;
169 let form = if !page.is_mod_action(context).await? {
170 let first_attachment = page.attachment.into_iter().map(Attachment::url).next();
171 let url = if first_attachment.is_some() {
173 } else if page.kind == PageType::Video {
174 // we cant display videos directly, so insert a link to external video page
175 Some(page.id.inner().clone())
177 // url sent by lemmy (old)
180 let (metadata_res, thumbnail_url) = if let Some(url) = &url {
181 fetch_site_data(context.client(), context.settings(), Some(url)).await
183 (None, page.image.map(|i| i.url.into()))
185 let (embed_title, embed_description, embed_video_url) = metadata_res
186 .map(|u| (u.title, u.description, u.embed_video_url))
187 .unwrap_or_default();
188 let local_site = LocalSite::read(context.pool()).await.ok();
189 let slur_regex = &local_site_opt_to_slur_regex(&local_site);
191 let body_slurs_removed =
192 read_from_string_or_source_opt(&page.content, &page.media_type, &page.source)
193 .map(|s| remove_slurs(&s, slur_regex));
194 let language_id = LanguageTag::to_language_id_single(page.language, context.pool()).await?;
197 name: page.name.clone(),
198 url: url.map(Into::into),
199 body: body_slurs_removed,
200 creator_id: creator.id,
201 community_id: community.id,
203 locked: page.comments_enabled.map(|e| !e),
204 published: page.published.map(|u| u.naive_local()),
205 updated: page.updated.map(|u| u.naive_local()),
206 deleted: Some(false),
207 nsfw: page.sensitive,
208 stickied: page.stickied,
213 ap_id: Some(page.id.clone().into()),
218 // if is mod action, only update locked/stickied fields, nothing else
219 PostInsertForm::builder()
220 .name(page.name.clone())
221 .creator_id(creator.id)
222 .community_id(community.id)
223 .ap_id(Some(page.id.clone().into()))
224 .locked(page.comments_enabled.map(|e| !e))
225 .stickied(page.stickied)
226 .updated(page.updated.map(|u| u.naive_local()))
230 // read existing, local post if any (for generating mod log)
231 let old_post = ObjectId::<ApubPost>::new(page.id.clone())
232 .dereference_local(context)
235 let post = Post::create(context.pool(), &form).await?;
237 // write mod log entries for sticky/lock
238 if Page::is_stickied_changed(&old_post, &page.stickied) {
239 let form = ModStickyPostForm {
240 mod_person_id: creator.id,
242 stickied: Some(post.stickied),
244 ModStickyPost::create(context.pool(), &form).await?;
246 if Page::is_locked_changed(&old_post, &page.comments_enabled) {
247 let form = ModLockPostForm {
248 mod_person_id: creator.id,
250 locked: Some(post.locked),
252 ModLockPost::create(context.pool(), &form).await?;
264 community::tests::parse_lemmy_community,
265 person::tests::parse_lemmy_person,
269 protocol::tests::file_to_json_object,
271 use lemmy_db_schema::source::site::Site;
272 use serial_test::serial;
276 async fn test_parse_lemmy_post() {
277 let context = init_context().await;
278 let (person, site) = parse_lemmy_person(&context).await;
279 let community = parse_lemmy_community(&context).await;
281 let json = file_to_json_object("assets/lemmy/objects/page.json").unwrap();
282 let url = Url::parse("https://enterprise.lemmy.ml/post/55143").unwrap();
283 let mut request_counter = 0;
284 ApubPost::verify(&json, &url, &context, &mut request_counter)
287 let post = ApubPost::from_apub(json, &context, &mut request_counter)
291 assert_eq!(post.ap_id, url.into());
292 assert_eq!(post.name, "Post title");
293 assert!(post.body.is_some());
294 assert_eq!(post.body.as_ref().unwrap().len(), 45);
295 assert!(!post.locked);
296 assert!(post.stickied);
297 assert_eq!(request_counter, 0);
299 Post::delete(context.pool(), post.id).await.unwrap();
300 Person::delete(context.pool(), person.id).await.unwrap();
301 Community::delete(context.pool(), community.id)
304 Site::delete(context.pool(), site.id).await.unwrap();