332 lines
10 KiB
Rust
332 lines
10 KiB
Rust
use super::*;
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#[derive(Deserialize)]
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pub struct PostQuery {
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post_id: String,
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}
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/// Return the post json over HTTP.
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pub async fn get_apub_post(
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info: Path<PostQuery>,
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db: DbPoolParam,
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) -> Result<HttpResponse<Body>, Error> {
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let id = info.post_id.parse::<i32>()?;
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let post = Post::read(&&db.get()?, id)?;
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if !post.deleted {
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Ok(create_apub_response(&post.to_apub(&db.get().unwrap())?))
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} else {
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Ok(create_apub_tombstone_response(&post.to_tombstone()?))
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}
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}
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impl ToApub for Post {
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type Response = Page;
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// Turn a Lemmy post into an ActivityPub page that can be sent out over the network.
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fn to_apub(&self, conn: &PgConnection) -> Result<Page, Error> {
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let mut page = Page::default();
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let oprops: &mut ObjectProperties = page.as_mut();
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let creator = User_::read(conn, self.creator_id)?;
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let community = Community::read(conn, self.community_id)?;
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oprops
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// Not needed when the Post is embedded in a collection (like for community outbox)
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.set_context_xsd_any_uri(context())?
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.set_id(self.ap_id.to_owned())?
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// Use summary field to be consistent with mastodon content warning.
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// https://mastodon.xyz/@Louisa/103987265222901387.json
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.set_summary_xsd_string(self.name.to_owned())?
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.set_published(convert_datetime(self.published))?
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.set_to_xsd_any_uri(community.actor_id)?
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.set_attributed_to_xsd_any_uri(creator.actor_id)?;
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if let Some(body) = &self.body {
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oprops.set_content_xsd_string(body.to_owned())?;
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}
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// TODO: hacky code because we get self.url == Some("")
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// https://github.com/dessalines/lemmy/issues/602
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let url = self.url.as_ref().filter(|u| !u.is_empty());
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if let Some(u) = url {
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oprops.set_url_xsd_any_uri(u.to_owned())?;
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}
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if let Some(u) = self.updated {
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oprops.set_updated(convert_datetime(u))?;
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}
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Ok(page)
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}
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fn to_tombstone(&self) -> Result<Tombstone, Error> {
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create_tombstone(
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self.deleted,
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&self.ap_id,
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self.updated,
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PageType.to_string(),
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)
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}
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}
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impl FromApub for PostForm {
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type ApubType = Page;
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/// Parse an ActivityPub page received from another instance into a Lemmy post.
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fn from_apub(page: &Page, conn: &PgConnection) -> Result<PostForm, Error> {
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let oprops = &page.object_props;
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let creator_actor_id = &oprops.get_attributed_to_xsd_any_uri().unwrap().to_string();
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let creator = get_or_fetch_and_upsert_remote_user(&creator_actor_id, &conn)?;
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let community_actor_id = &oprops.get_to_xsd_any_uri().unwrap().to_string();
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let community = get_or_fetch_and_upsert_remote_community(&community_actor_id, &conn)?;
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Ok(PostForm {
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name: oprops.get_summary_xsd_string().unwrap().to_string(),
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url: oprops.get_url_xsd_any_uri().map(|u| u.to_string()),
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body: oprops.get_content_xsd_string().map(|c| c.to_string()),
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creator_id: creator.id,
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community_id: community.id,
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removed: None, // -> Delete activity / tombstone
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locked: None, // -> commentsEnabled
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published: oprops
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.get_published()
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.map(|u| u.as_ref().to_owned().naive_local()),
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updated: oprops
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.get_updated()
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.map(|u| u.as_ref().to_owned().naive_local()),
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deleted: None, // -> Delete activity / tombstone
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nsfw: false, // -> sensitive
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stickied: None, // -> put it in "featured" collection of the community
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embed_title: None, // -> attachment?
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embed_description: None,
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embed_html: None,
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thumbnail_url: None,
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ap_id: oprops.get_id().unwrap().to_string(),
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local: false,
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})
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}
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}
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impl ApubObjectType for Post {
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/// Send out information about a newly created post, to the followers of the community.
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fn send_create(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
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let page = self.to_apub(conn)?;
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let community = Community::read(conn, self.community_id)?;
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let id = format!("{}/create/{}", self.ap_id, uuid::Uuid::new_v4());
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let mut create = Create::new();
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populate_object_props(
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&mut create.object_props,
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&community.get_followers_url(),
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&id,
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)?;
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create
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.create_props
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.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
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.set_object_base_box(page)?;
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// Insert the sent activity into the activity table
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let activity_form = activity::ActivityForm {
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user_id: creator.id,
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data: serde_json::to_value(&create)?,
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local: true,
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updated: None,
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};
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activity::Activity::create(&conn, &activity_form)?;
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send_activity(
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&create,
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&creator.private_key.as_ref().unwrap(),
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&creator.actor_id,
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community.get_follower_inboxes(&conn)?,
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)?;
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Ok(())
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}
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/// Send out information about an edited post, to the followers of the community.
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fn send_update(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
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let page = self.to_apub(conn)?;
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let community = Community::read(conn, self.community_id)?;
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let id = format!("{}/update/{}", self.ap_id, uuid::Uuid::new_v4());
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let mut update = Update::new();
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populate_object_props(
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&mut update.object_props,
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&community.get_followers_url(),
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&id,
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)?;
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update
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.update_props
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.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
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.set_object_base_box(page)?;
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// Insert the sent activity into the activity table
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let activity_form = activity::ActivityForm {
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user_id: creator.id,
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data: serde_json::to_value(&update)?,
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local: true,
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updated: None,
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};
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activity::Activity::create(&conn, &activity_form)?;
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send_activity(
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&update,
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&creator.private_key.as_ref().unwrap(),
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&creator.actor_id,
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community.get_follower_inboxes(&conn)?,
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)?;
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Ok(())
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}
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fn send_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
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let page = self.to_apub(conn)?;
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let community = Community::read(conn, self.community_id)?;
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let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4());
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let mut delete = Delete::default();
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populate_object_props(
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&mut delete.object_props,
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&community.get_followers_url(),
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&id,
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)?;
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delete
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.delete_props
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.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
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.set_object_base_box(page)?;
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// Insert the sent activity into the activity table
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let activity_form = activity::ActivityForm {
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user_id: self.creator_id,
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data: serde_json::to_value(&delete)?,
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local: true,
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updated: None,
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};
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activity::Activity::create(&conn, &activity_form)?;
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let community = Community::read(conn, self.community_id)?;
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send_activity(
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&delete,
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&creator.private_key.as_ref().unwrap(),
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&creator.actor_id,
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community.get_follower_inboxes(&conn)?,
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)?;
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Ok(())
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}
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fn send_undo_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
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let page = self.to_apub(conn)?;
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let community = Community::read(conn, self.community_id)?;
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let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4());
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let mut delete = Delete::default();
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populate_object_props(
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&mut delete.object_props,
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&community.get_followers_url(),
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&id,
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)?;
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delete
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.delete_props
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.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
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.set_object_base_box(page)?;
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// Undo that fake activity
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let undo_id = format!("{}/undo/delete/{}", self.ap_id, uuid::Uuid::new_v4());
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let mut undo = Undo::default();
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populate_object_props(
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&mut undo.object_props,
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&community.get_followers_url(),
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&undo_id,
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)?;
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undo
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.undo_props
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.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
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.set_object_base_box(delete)?;
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// Insert the sent activity into the activity table
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let activity_form = activity::ActivityForm {
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user_id: self.creator_id,
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data: serde_json::to_value(&undo)?,
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local: true,
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updated: None,
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};
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activity::Activity::create(&conn, &activity_form)?;
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let community = Community::read(conn, self.community_id)?;
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send_activity(
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&undo,
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&creator.private_key.as_ref().unwrap(),
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&creator.actor_id,
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community.get_follower_inboxes(&conn)?,
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)?;
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Ok(())
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}
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}
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impl ApubLikeableType for Post {
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fn send_like(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
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let page = self.to_apub(conn)?;
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let community = Community::read(conn, self.community_id)?;
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let id = format!("{}/like/{}", self.ap_id, uuid::Uuid::new_v4());
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let mut like = Like::new();
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populate_object_props(&mut like.object_props, &community.get_followers_url(), &id)?;
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like
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.like_props
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.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
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.set_object_base_box(page)?;
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// Insert the sent activity into the activity table
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let activity_form = activity::ActivityForm {
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user_id: creator.id,
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data: serde_json::to_value(&like)?,
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local: true,
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updated: None,
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};
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activity::Activity::create(&conn, &activity_form)?;
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send_activity(
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&like,
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&creator.private_key.as_ref().unwrap(),
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&creator.actor_id,
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community.get_follower_inboxes(&conn)?,
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)?;
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Ok(())
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}
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fn send_dislike(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
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let page = self.to_apub(conn)?;
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let community = Community::read(conn, self.community_id)?;
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let id = format!("{}/dislike/{}", self.ap_id, uuid::Uuid::new_v4());
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let mut dislike = Dislike::new();
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populate_object_props(
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&mut dislike.object_props,
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&community.get_followers_url(),
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&id,
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)?;
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dislike
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.dislike_props
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.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
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.set_object_base_box(page)?;
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// Insert the sent activity into the activity table
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let activity_form = activity::ActivityForm {
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user_id: creator.id,
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data: serde_json::to_value(&dislike)?,
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local: true,
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updated: None,
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};
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activity::Activity::create(&conn, &activity_form)?;
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send_activity(
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&dislike,
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&creator.private_key.as_ref().unwrap(),
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&creator.actor_id,
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community.get_follower_inboxes(&conn)?,
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)?;
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Ok(())
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}
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}
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