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Dont federate post locking via Update activity (#4717)

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* Dont federate post locking via Update activity

* cleanup

* add missing mod log entries

* update assets
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Nutomic 2024-05-15 13:36:00 +02:00 committed by GitHub
parent 9a9d518153
commit 93c9a5f2b1
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9 changed files with 62 additions and 128 deletions
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1
crates/apub/assets/lemmy/activities/create_or_update/create_page.json
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@ -23,7 +23,6 @@
"href": "https://lemmy.ml/pictrs/image/xl8W7FZfk9.jpg"
}
],
"commentsEnabled": true,
"sensitive": false,
"language": {
"identifier": "ko",

1
crates/apub/assets/lemmy/activities/create_or_update/update_page.json
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@ -23,7 +23,6 @@
"href": "https://lemmy.ml/pictrs/image/xl8W7FZfk9.jpg"
}
],
"commentsEnabled": true,
"sensitive": false,
"published": "2021-10-29T15:10:51.557399Z",
"updated": "2021-10-29T15:11:35.976374Z"

2
crates/apub/assets/lemmy/collections/group_featured_posts.json
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@ -15,7 +15,6 @@
"cc": [],
"mediaType": "text/html",
"attachment": [],
"commentsEnabled": true,
"sensitive": false,
"published": "2023-02-06T06:42:41.939437Z",
"language": {
@ -36,7 +35,6 @@
"cc": [],
"mediaType": "text/html",
"attachment": [],
"commentsEnabled": true,
"sensitive": false,
"published": "2023-02-06T06:42:37.119567Z",
"language": {

2
crates/apub/assets/lemmy/collections/group_outbox.json
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@ -22,7 +22,6 @@
],
"name": "another outbox test",
"mediaType": "text/html",
"commentsEnabled": true,
"sensitive": false,
"stickied": false,
"published": "2021-11-18T17:19:45.895163Z"
@ -51,7 +50,6 @@
],
"name": "outbox test",
"mediaType": "text/html",
"commentsEnabled": true,
"sensitive": false,
"stickied": false,
"published": "2021-11-18T17:19:05.763109Z"

1
crates/apub/assets/lemmy/objects/page.json
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@ -25,7 +25,6 @@
"url": "https://enterprise.lemmy.ml/pictrs/image/eOtYb9iEiB.png"
},
"sensitive": false,
"commentsEnabled": true,
"language": {
"identifier": "fr",
"name": "Français"

24
crates/apub/src/activities/community/lock_page.rs
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@ -26,6 +26,7 @@ use lemmy_db_schema::{
source::{
activity::ActivitySendTargets,
community::Community,
moderator::{ModLockPost, ModLockPostForm},
person::Person,
post::{Post, PostUpdateForm},
},
@ -60,12 +61,22 @@ impl ActivityHandler for LockPage {
}
async fn receive(self, context: &Data<Self::DataType>) -> Result<(), Self::Error> {
insert_received_activity(&self.id, context).await?;
let locked = Some(true);
let form = PostUpdateForm {
locked: Some(true),
locked,
..Default::default()
};
let post = self.object.dereference(context).await?;
Post::update(&mut context.pool(), post.id, &form).await?;
let form = ModLockPostForm {
mod_person_id: self.actor.dereference(context).await?.id,
post_id: post.id,
locked,
};
ModLockPost::create(&mut context.pool(), &form).await?;
Ok(())
}
}
@ -94,12 +105,21 @@ impl ActivityHandler for UndoLockPage {
async fn receive(self, context: &Data<Self::DataType>) -> Result<(), Self::Error> {
insert_received_activity(&self.id, context).await?;
let locked = Some(false);
let form = PostUpdateForm {
locked: Some(false),
locked,
..Default::default()
};
let post = self.object.object.dereference(context).await?;
Post::update(&mut context.pool(), post.id, &form).await?;
let form = ModLockPostForm {
mod_person_id: self.actor.dereference(context).await?.id,
post_id: post.id,
locked,
};
ModLockPost::create(&mut context.pool(), &form).await?;
Ok(())
}
}

30
crates/apub/src/activities/create_or_update/post.rs
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@ -4,7 +4,6 @@ use crate::{
community::send_activity_in_community,
generate_activity_id,
verify_is_public,
verify_mod_action,
verify_person_in_community,
},
activity_lists::AnnouncableActivities,
@ -78,14 +77,13 @@ impl CreateOrUpdatePage {
let create_or_update =
CreateOrUpdatePage::new(post.into(), &person, &community, kind, &context).await?;
let is_mod_action = create_or_update.object.is_mod_action(&context).await?;
let activity = AnnouncableActivities::CreateOrUpdatePost(create_or_update);
send_activity_in_community(
activity,
&person,
&community,
ActivitySendTargets::empty(),
is_mod_action,
false,
&context,
)
.await?;
@ -112,30 +110,8 @@ impl ActivityHandler for CreateOrUpdatePage {
let community = self.community(context).await?;
verify_person_in_community(&self.actor, &community, context).await?;
check_community_deleted_or_removed(&community)?;
match self.kind {
CreateOrUpdateType::Create => {
verify_domains_match(self.actor.inner(), self.object.id.inner())?;
verify_urls_match(self.actor.inner(), self.object.creator()?.inner())?;
// Check that the post isnt locked, as that isnt possible for newly created posts.
// However, when fetching a remote post we generate a new create activity with the current
// locked value, so this check may fail. So only check if its a local community,
// because then we will definitely receive all create and update activities separately.
let is_locked = self.object.comments_enabled == Some(false);
if community.local && is_locked {
Err(LemmyErrorType::NewPostCannotBeLocked)?
}
}
CreateOrUpdateType::Update => {
let is_mod_action = self.object.is_mod_action(context).await?;
if is_mod_action {
verify_mod_action(&self.actor, &community, context).await?;
} else {
verify_domains_match(self.actor.inner(), self.object.id.inner())?;
verify_urls_match(self.actor.inner(), self.object.creator()?.inner())?;
}
}
}
verify_domains_match(self.actor.inner(), self.object.id.inner())?;
verify_urls_match(self.actor.inner(), self.object.creator()?.inner())?;
ApubPost::verify(&self.object, self.actor.inner(), context).await?;
Ok(())
}

106
crates/apub/src/objects/post.rs
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@ -36,7 +36,6 @@ use lemmy_db_schema::{
source::{
community::Community,
local_site::LocalSite,
moderator::{ModLockPost, ModLockPostForm},
person::Person,
post::{Post, PostInsertForm, PostUpdateForm},
},
@ -147,7 +146,6 @@ impl Object for ApubPost {
source: self.body.clone().map(Source::new),
attachment,
image: self.thumbnail_url.clone().map(ImageObject::new),
comments_enabled: Some(!self.locked),
sensitive: Some(self.nsfw),
language,
published: Some(self.published),
@ -165,12 +163,8 @@ impl Object for ApubPost {
expected_domain: &Url,
context: &Data<Self::DataType>,
) -> LemmyResult<()> {
// We can't verify the domain in case of mod action, because the mod may be on a different
// instance from the post author.
if !page.is_mod_action(context).await? {
verify_domains_match(page.id.inner(), expected_domain)?;
verify_is_remote_object(&page.id, context)?;
};
verify_domains_match(page.id.inner(), expected_domain)?;
verify_is_remote_object(&page.id, context)?;
let community = page.community(context).await?;
check_apub_id_valid_with_strictness(page.id.inner(), community.local, context).await?;
@ -218,62 +212,46 @@ impl Object for ApubPost {
name = name.chars().take(MAX_TITLE_LENGTH).collect();
}
// read existing, local post if any (for generating mod log)
let old_post = page.id.dereference_local(context).await;
let first_attachment = page.attachment.first();
let local_site = LocalSite::read(&mut context.pool()).await.ok();
let form = if !page.is_mod_action(context).await? {
let url = if let Some(attachment) = first_attachment.cloned() {
Some(attachment.url())
} else if page.kind == PageType::Video {
// we cant display videos directly, so insert a link to external video page
Some(page.id.inner().clone())
} else {
None
};
check_url_scheme(&url)?;
let alt_text = first_attachment.cloned().and_then(Attachment::alt_text);
let url = proxy_image_link_opt_apub(url, context).await?;
let slur_regex = &local_site_opt_to_slur_regex(&local_site);
let url_blocklist = get_url_blocklist(context).await?;
let body = read_from_string_or_source_opt(&page.content, &page.media_type, &page.source);
let body = process_markdown_opt(&body, slur_regex, &url_blocklist, context).await?;
let language_id =
LanguageTag::to_language_id_single(page.language, &mut context.pool()).await?;
PostInsertForm::builder()
.name(name)
.url(url.map(Into::into))
.body(body)
.alt_text(alt_text)
.creator_id(creator.id)
.community_id(community.id)
.locked(page.comments_enabled.map(|e| !e))
.published(page.published.map(Into::into))
.updated(page.updated.map(Into::into))
.deleted(Some(false))
.nsfw(page.sensitive)
.ap_id(Some(page.id.clone().into()))
.local(Some(false))
.language_id(language_id)
.build()
let url = if let Some(attachment) = first_attachment.cloned() {
Some(attachment.url())
} else if page.kind == PageType::Video {
// we cant display videos directly, so insert a link to external video page
Some(page.id.inner().clone())
} else {
// if is mod action, only update locked/stickied fields, nothing else
PostInsertForm::builder()
.name(name)
.creator_id(creator.id)
.community_id(community.id)
.ap_id(Some(page.id.clone().into()))
.locked(page.comments_enabled.map(|e| !e))
.updated(page.updated.map(Into::into))
.build()
None
};
check_url_scheme(&url)?;
let alt_text = first_attachment.cloned().and_then(Attachment::alt_text);
let url = proxy_image_link_opt_apub(url, context).await?;
let slur_regex = &local_site_opt_to_slur_regex(&local_site);
let url_blocklist = get_url_blocklist(context).await?;
let body = read_from_string_or_source_opt(&page.content, &page.media_type, &page.source);
let body = process_markdown_opt(&body, slur_regex, &url_blocklist, context).await?;
let language_id =
LanguageTag::to_language_id_single(page.language, &mut context.pool()).await?;
let form = PostInsertForm::builder()
.name(name)
.url(url.map(Into::into))
.body(body)
.alt_text(alt_text)
.creator_id(creator.id)
.community_id(community.id)
.published(page.published.map(Into::into))
.updated(page.updated.map(Into::into))
.deleted(Some(false))
.nsfw(page.sensitive)
.ap_id(Some(page.id.clone().into()))
.local(Some(false))
.language_id(language_id)
.build();
let timestamp = page.updated.or(page.published).unwrap_or_else(naive_now);
let post = Post::insert_apub(&mut context.pool(), timestamp, &form).await?;
@ -287,16 +265,6 @@ impl Object for ApubPost {
context.reset_request_count(),
);
// write mod log entry for lock
if Page::is_locked_changed(&old_post, &page.comments_enabled) {
let form = ModLockPostForm {
mod_person_id: creator.id,
post_id: post.id,
locked: Some(post.locked),
};
ModLockPost::create(&mut context.pool(), &form).await?;
}
Ok(post.into())
}
}

23
crates/apub/src/protocol/objects/page.rs
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@ -60,7 +60,6 @@ pub struct Page {
#[serde(default)]
pub(crate) attachment: Vec<Attachment>,
pub(crate) image: Option<ImageObject>,
pub(crate) comments_enabled: Option<bool>,
pub(crate) sensitive: Option<bool>,
pub(crate) published: Option<DateTime<Utc>>,
pub(crate) updated: Option<DateTime<Utc>>,
@ -156,28 +155,6 @@ pub enum HashtagType {
}
impl Page {
/// Only mods can change the post's locked status. So if it is changed from the default value,
/// it is a mod action and needs to be verified as such.
///
/// Locked needs to be false on a newly created post (verified in [[CreatePost]].
pub(crate) async fn is_mod_action(&self, context: &Data<LemmyContext>) -> LemmyResult<bool> {
let old_post = self.id.clone().dereference_local(context).await;
Ok(Page::is_locked_changed(&old_post, &self.comments_enabled))
}
pub(crate) fn is_locked_changed<E>(
old_post: &Result<ApubPost, E>,
new_comments_enabled: &Option<bool>,
) -> bool {
if let Some(new_comments_enabled) = new_comments_enabled {
if let Ok(old_post) = old_post {
return new_comments_enabled != &!old_post.locked;
}
}
false
}
pub(crate) fn creator(&self) -> LemmyResult<ObjectId<ApubPerson>> {
match &self.attributed_to {
AttributedTo::Lemmy(l) => Ok(l.clone()),