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Fix handling of apub downvote (fixes #4545) (#4551)

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* Fix handling of apub downvote (fixes #4545)

* fmt

---------

Co-authored-by: SleeplessOne1917 <28871516+SleeplessOne1917@users.noreply.github.com>
This commit is contained in:
Nutomic 2024-03-22 23:41:09 +01:00 committed by GitHub
parent baf5921d2c
commit 21547dedf7
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1 changed files with 18 additions and 14 deletions
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24
crates/apub/src/activities/voting/vote.rs
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@ -2,7 +2,7 @@ use crate::{
activities::{
generate_activity_id,
verify_person_in_community,
voting::{vote_comment, vote_post},
voting::{undo_vote_comment, undo_vote_post, vote_comment, vote_post},
},
insert_received_activity,
objects::{community::ApubCommunity, person::ApubPerson},
@ -17,7 +17,6 @@ use activitypub_federation::{
fetch::object_id::ObjectId,
traits::{ActivityHandler, Actor},
};
use anyhow::anyhow;
use lemmy_api_common::{context::LemmyContext, utils::check_bot_account};
use lemmy_db_schema::source::local_site::LocalSite;
use lemmy_utils::error::LemmyError;
@ -58,16 +57,8 @@ impl ActivityHandler for Vote {
async fn verify(&self, context: &Data<LemmyContext>) -> Result<(), LemmyError> {
let community = self.community(context).await?;
verify_person_in_community(&self.actor, &community, context).await?;
let enable_downvotes = LocalSite::read(&mut context.pool())
.await
.map(|l| l.enable_downvotes)
.unwrap_or(true);
if self.kind == VoteType::Dislike && !enable_downvotes {
Err(anyhow!("Downvotes disabled").into())
} else {
Ok(())
}
}
#[tracing::instrument(skip_all)]
async fn receive(self, context: &Data<LemmyContext>) -> Result<(), LemmyError> {
@ -77,9 +68,22 @@ impl ActivityHandler for Vote {
check_bot_account(&actor.0)?;
let enable_downvotes = LocalSite::read(&mut context.pool())
.await
.map(|l| l.enable_downvotes)
.unwrap_or(true);
if self.kind == VoteType::Dislike && !enable_downvotes {
// If this is a downvote but downvotes are ignored, only undo any existing vote
match object {
PostOrComment::Post(p) => undo_vote_post(actor, &p, context).await,
PostOrComment::Comment(c) => undo_vote_comment(actor, &c, context).await,
}
} else {
// Otherwise apply the vote normally
match object {
PostOrComment::Post(p) => vote_post(&self.kind, actor, &p, context).await,
PostOrComment::Comment(c) => vote_comment(&self.kind, actor, &c, context).await,
}
}
}
}