use super::*; #[derive(Deserialize)] pub struct PostQuery { post_id: String, } /// Return the post json over HTTP. pub async fn get_apub_post( info: Path, db: DbPoolParam, ) -> Result, Error> { let id = info.post_id.parse::()?; let post = Post::read(&&db.get()?, id)?; if !post.deleted { Ok(create_apub_response(&post.to_apub(&db.get().unwrap())?)) } else { Ok(create_apub_tombstone_response(&post.to_tombstone()?)) } } impl ToApub for Post { type Response = Page; // Turn a Lemmy post into an ActivityPub page that can be sent out over the network. fn to_apub(&self, conn: &PgConnection) -> Result { let mut page = Page::default(); let oprops: &mut ObjectProperties = page.as_mut(); let creator = User_::read(conn, self.creator_id)?; let community = Community::read(conn, self.community_id)?; oprops // Not needed when the Post is embedded in a collection (like for community outbox) .set_context_xsd_any_uri(context())? .set_id(self.ap_id.to_owned())? // Use summary field to be consistent with mastodon content warning. // https://mastodon.xyz/@Louisa/103987265222901387.json .set_summary_xsd_string(self.name.to_owned())? .set_published(convert_datetime(self.published))? .set_to_xsd_any_uri(community.actor_id)? .set_attributed_to_xsd_any_uri(creator.actor_id)?; if let Some(body) = &self.body { oprops.set_content_xsd_string(body.to_owned())?; } // TODO: hacky code because we get self.url == Some("") // https://github.com/dessalines/lemmy/issues/602 let url = self.url.as_ref().filter(|u| !u.is_empty()); if let Some(u) = url { oprops.set_url_xsd_any_uri(u.to_owned())?; } if let Some(u) = self.updated { oprops.set_updated(convert_datetime(u))?; } Ok(page) } fn to_tombstone(&self) -> Result { create_tombstone( self.deleted, &self.ap_id, self.updated, PageType.to_string(), ) } } impl FromApub for PostForm { type ApubType = Page; /// Parse an ActivityPub page received from another instance into a Lemmy post. fn from_apub(page: &Page, conn: &PgConnection) -> Result { let oprops = &page.object_props; let creator_actor_id = &oprops.get_attributed_to_xsd_any_uri().unwrap().to_string(); let creator = get_or_fetch_and_upsert_remote_user(&creator_actor_id, &conn)?; let community_actor_id = &oprops.get_to_xsd_any_uri().unwrap().to_string(); let community = get_or_fetch_and_upsert_remote_community(&community_actor_id, &conn)?; Ok(PostForm { name: oprops.get_summary_xsd_string().unwrap().to_string(), url: oprops.get_url_xsd_any_uri().map(|u| u.to_string()), body: oprops.get_content_xsd_string().map(|c| c.to_string()), creator_id: creator.id, community_id: community.id, removed: None, // -> Delete activity / tombstone locked: None, // -> commentsEnabled published: oprops .get_published() .map(|u| u.as_ref().to_owned().naive_local()), updated: oprops .get_updated() .map(|u| u.as_ref().to_owned().naive_local()), deleted: None, // -> Delete activity / tombstone nsfw: false, // -> sensitive stickied: None, // -> put it in "featured" collection of the community embed_title: None, // -> attachment? embed_description: None, embed_html: None, thumbnail_url: None, ap_id: oprops.get_id().unwrap().to_string(), local: false, }) } } impl ApubObjectType for Post { /// Send out information about a newly created post, to the followers of the community. fn send_create(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> { let page = self.to_apub(conn)?; let community = Community::read(conn, self.community_id)?; let id = format!("{}/create/{}", self.ap_id, uuid::Uuid::new_v4()); let mut create = Create::new(); populate_object_props( &mut create.object_props, &community.get_followers_url(), &id, )?; create .create_props .set_actor_xsd_any_uri(creator.actor_id.to_owned())? .set_object_base_box(page)?; // Insert the sent activity into the activity table let activity_form = activity::ActivityForm { user_id: creator.id, data: serde_json::to_value(&create)?, local: true, updated: None, }; activity::Activity::create(&conn, &activity_form)?; send_activity( &create, &creator.private_key.as_ref().unwrap(), &creator.actor_id, community.get_follower_inboxes(&conn)?, )?; Ok(()) } /// Send out information about an edited post, to the followers of the community. fn send_update(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> { let page = self.to_apub(conn)?; let community = Community::read(conn, self.community_id)?; let id = format!("{}/update/{}", self.ap_id, uuid::Uuid::new_v4()); let mut update = Update::new(); populate_object_props( &mut update.object_props, &community.get_followers_url(), &id, )?; update .update_props .set_actor_xsd_any_uri(creator.actor_id.to_owned())? .set_object_base_box(page)?; // Insert the sent activity into the activity table let activity_form = activity::ActivityForm { user_id: creator.id, data: serde_json::to_value(&update)?, local: true, updated: None, }; activity::Activity::create(&conn, &activity_form)?; send_activity( &update, &creator.private_key.as_ref().unwrap(), &creator.actor_id, community.get_follower_inboxes(&conn)?, )?; Ok(()) } fn send_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> { let page = self.to_apub(conn)?; let community = Community::read(conn, self.community_id)?; let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4()); let mut delete = Delete::default(); populate_object_props( &mut delete.object_props, &community.get_followers_url(), &id, )?; delete .delete_props .set_actor_xsd_any_uri(creator.actor_id.to_owned())? .set_object_base_box(page)?; // Insert the sent activity into the activity table let activity_form = activity::ActivityForm { user_id: self.creator_id, data: serde_json::to_value(&delete)?, local: true, updated: None, }; activity::Activity::create(&conn, &activity_form)?; let community = Community::read(conn, self.community_id)?; send_activity( &delete, &creator.private_key.as_ref().unwrap(), &creator.actor_id, community.get_follower_inboxes(&conn)?, )?; Ok(()) } fn send_undo_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> { let page = self.to_apub(conn)?; let community = Community::read(conn, self.community_id)?; let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4()); let mut delete = Delete::default(); populate_object_props( &mut delete.object_props, &community.get_followers_url(), &id, )?; delete .delete_props .set_actor_xsd_any_uri(creator.actor_id.to_owned())? .set_object_base_box(page)?; // TODO // Undo that fake activity let undo_id = format!("{}/undo/delete/{}", self.ap_id, uuid::Uuid::new_v4()); let mut undo = Undo::default(); populate_object_props( &mut undo.object_props, &community.get_followers_url(), &undo_id, )?; undo .undo_props .set_actor_xsd_any_uri(creator.actor_id.to_owned())? .set_object_base_box(delete)?; // Insert the sent activity into the activity table let activity_form = activity::ActivityForm { user_id: self.creator_id, data: serde_json::to_value(&undo)?, local: true, updated: None, }; activity::Activity::create(&conn, &activity_form)?; let community = Community::read(conn, self.community_id)?; send_activity( &undo, &creator.private_key.as_ref().unwrap(), &creator.actor_id, community.get_follower_inboxes(&conn)?, )?; Ok(()) } fn send_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error> { let page = self.to_apub(conn)?; let community = Community::read(conn, self.community_id)?; let id = format!("{}/remove/{}", self.ap_id, uuid::Uuid::new_v4()); let mut remove = Remove::default(); populate_object_props( &mut remove.object_props, &community.get_followers_url(), &id, )?; remove .remove_props .set_actor_xsd_any_uri(mod_.actor_id.to_owned())? .set_object_base_box(page)?; // Insert the sent activity into the activity table let activity_form = activity::ActivityForm { user_id: mod_.id, data: serde_json::to_value(&remove)?, local: true, updated: None, }; activity::Activity::create(&conn, &activity_form)?; let community = Community::read(conn, self.community_id)?; send_activity( &remove, &mod_.private_key.as_ref().unwrap(), &mod_.actor_id, community.get_follower_inboxes(&conn)?, )?; Ok(()) } fn send_undo_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error> { let page = self.to_apub(conn)?; let community = Community::read(conn, self.community_id)?; let id = format!("{}/remove/{}", self.ap_id, uuid::Uuid::new_v4()); let mut remove = Remove::default(); populate_object_props( &mut remove.object_props, &community.get_followers_url(), &id, )?; remove .remove_props .set_actor_xsd_any_uri(mod_.actor_id.to_owned())? .set_object_base_box(page)?; // Undo that fake activity let undo_id = format!("{}/undo/remove/{}", self.ap_id, uuid::Uuid::new_v4()); let mut undo = Undo::default(); populate_object_props( &mut undo.object_props, &community.get_followers_url(), &undo_id, )?; undo .undo_props .set_actor_xsd_any_uri(mod_.actor_id.to_owned())? .set_object_base_box(remove)?; // Insert the sent activity into the activity table let activity_form = activity::ActivityForm { user_id: mod_.id, data: serde_json::to_value(&undo)?, local: true, updated: None, }; activity::Activity::create(&conn, &activity_form)?; let community = Community::read(conn, self.community_id)?; send_activity( &undo, &mod_.private_key.as_ref().unwrap(), &mod_.actor_id, community.get_follower_inboxes(&conn)?, )?; Ok(()) } } impl ApubLikeableType for Post { fn send_like(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> { let page = self.to_apub(conn)?; let community = Community::read(conn, self.community_id)?; let id = format!("{}/like/{}", self.ap_id, uuid::Uuid::new_v4()); let mut like = Like::new(); populate_object_props(&mut like.object_props, &community.get_followers_url(), &id)?; like .like_props .set_actor_xsd_any_uri(creator.actor_id.to_owned())? .set_object_base_box(page)?; // Insert the sent activity into the activity table let activity_form = activity::ActivityForm { user_id: creator.id, data: serde_json::to_value(&like)?, local: true, updated: None, }; activity::Activity::create(&conn, &activity_form)?; send_activity( &like, &creator.private_key.as_ref().unwrap(), &creator.actor_id, community.get_follower_inboxes(&conn)?, )?; Ok(()) } fn send_dislike(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> { let page = self.to_apub(conn)?; let community = Community::read(conn, self.community_id)?; let id = format!("{}/dislike/{}", self.ap_id, uuid::Uuid::new_v4()); let mut dislike = Dislike::new(); populate_object_props( &mut dislike.object_props, &community.get_followers_url(), &id, )?; dislike .dislike_props .set_actor_xsd_any_uri(creator.actor_id.to_owned())? .set_object_base_box(page)?; // Insert the sent activity into the activity table let activity_form = activity::ActivityForm { user_id: creator.id, data: serde_json::to_value(&dislike)?, local: true, updated: None, }; activity::Activity::create(&conn, &activity_form)?; send_activity( &dislike, &creator.private_key.as_ref().unwrap(), &creator.actor_id, community.get_follower_inboxes(&conn)?, )?; Ok(()) } }