mirror of
https://github.com/LemmyNet/lemmy.git
synced 2024-06-01 19:42:08 +00:00
113 lines
3.7 KiB
Rust
113 lines
3.7 KiB
Rust
use crate::{
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activities::{verify_is_public, verify_person_in_community},
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fetcher::{object_id::ObjectId, post_or_comment::PostOrComment},
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objects::{community::ApubCommunity, person::ApubPerson, post::ApubPost},
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protocol::Source,
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};
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use activitystreams::{object::kind::NoteType, unparsed::Unparsed};
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use anyhow::anyhow;
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use chrono::{DateTime, FixedOffset};
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use lemmy_api_common::blocking;
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use lemmy_apub_lib::{values::MediaTypeHtml, verify::verify_domains_match};
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use lemmy_db_schema::{
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newtypes::CommentId,
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source::{community::Community, post::Post},
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traits::Crud,
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};
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use lemmy_utils::LemmyError;
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use lemmy_websocket::LemmyContext;
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use serde::{Deserialize, Serialize};
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use serde_with::skip_serializing_none;
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use std::ops::Deref;
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use url::Url;
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#[skip_serializing_none]
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#[derive(Clone, Debug, Deserialize, Serialize)]
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#[serde(rename_all = "camelCase")]
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pub struct Note {
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pub(crate) r#type: NoteType,
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pub(crate) id: Url,
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pub(crate) attributed_to: ObjectId<ApubPerson>,
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/// Indicates that the object is publicly readable. Unlike [`Post.to`], this one doesn't contain
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/// the community ID, as it would be incompatible with Pleroma (and we can get the community from
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/// the post in [`in_reply_to`]).
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pub(crate) to: Vec<Url>,
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pub(crate) content: String,
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pub(crate) media_type: Option<MediaTypeHtml>,
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pub(crate) source: SourceCompat,
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pub(crate) in_reply_to: ObjectId<PostOrComment>,
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pub(crate) published: Option<DateTime<FixedOffset>>,
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pub(crate) updated: Option<DateTime<FixedOffset>>,
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#[serde(flatten)]
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pub(crate) unparsed: Unparsed,
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}
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/// Pleroma puts a raw string in the source, so we have to handle it here for deserialization to work
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#[derive(Clone, Debug, Deserialize, Serialize)]
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#[serde(rename_all = "camelCase")]
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#[serde(untagged)]
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pub(crate) enum SourceCompat {
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Lemmy(Source),
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Pleroma(String),
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}
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impl Note {
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pub(crate) fn id_unchecked(&self) -> &Url {
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&self.id
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}
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pub(crate) fn id(&self, expected_domain: &Url) -> Result<&Url, LemmyError> {
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verify_domains_match(&self.id, expected_domain)?;
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Ok(&self.id)
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}
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pub(crate) async fn get_parents(
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&self,
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context: &LemmyContext,
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request_counter: &mut i32,
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) -> Result<(ApubPost, Option<CommentId>), LemmyError> {
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// Fetch parent comment chain in a box, otherwise it can cause a stack overflow.
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let parent = Box::pin(
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self
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.in_reply_to
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.dereference(context, request_counter)
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.await?,
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);
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match parent.deref() {
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PostOrComment::Post(p) => {
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// Workaround because I cant figure out how to get the post out of the box (and we dont
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// want to stackoverflow in a deep comment hierarchy).
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let post_id = p.id;
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let post = blocking(context.pool(), move |conn| Post::read(conn, post_id)).await??;
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Ok((post.into(), None))
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}
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PostOrComment::Comment(c) => {
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let post_id = c.post_id;
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let post = blocking(context.pool(), move |conn| Post::read(conn, post_id)).await??;
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Ok((post.into(), Some(c.id)))
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}
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}
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}
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pub(crate) async fn verify(
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&self,
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context: &LemmyContext,
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request_counter: &mut i32,
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) -> Result<(), LemmyError> {
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let (post, _parent_comment_id) = self.get_parents(context, request_counter).await?;
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let community_id = post.community_id;
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let community: ApubCommunity = blocking(context.pool(), move |conn| {
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Community::read(conn, community_id)
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})
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.await??
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.into();
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if post.locked {
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return Err(anyhow!("Post is locked").into());
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}
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verify_domains_match(self.attributed_to.inner(), &self.id)?;
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verify_person_in_community(&self.attributed_to, &community, context, request_counter).await?;
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verify_is_public(&self.to)?;
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Ok(())
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}
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}
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