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Code Issues Projects Releases Packages Wiki Activity Actions

Simplify delete activity implementation

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This commit is contained in:
Felix Ableitner 2021-08-11 02:39:32 +02:00
parent 0670dc4565
commit e65897a350
3 changed files with 161 additions and 170 deletions
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139
crates/apub/src/activities/deletion/delete.rs
View file

@ -2,28 +2,18 @@ use crate::{
activities::{
comment::send_websocket_message as send_comment_message,
community::send_websocket_message as send_community_message,
deletion::{verify_delete_activity, DeletableObjects},
post::send_websocket_message as send_post_message,
verify_activity,
verify_mod_action,
verify_person_in_community,
},
fetcher::{
community::get_or_fetch_and_upsert_community,
objects::get_or_fetch_and_insert_post_or_comment,
person::get_or_fetch_and_upsert_person,
},
ActorType,
fetcher::person::get_or_fetch_and_upsert_person,
CommunityType,
PostOrComment,
};
use activitystreams::activity::kind::DeleteType;
use lemmy_api_common::blocking;
use lemmy_apub_lib::{values::PublicUrl, verify_urls_match, ActivityCommonFields, ActivityHandler};
use lemmy_db_queries::{
source::{comment::Comment_, community::Community_, post::Post_},
Crud,
};
use lemmy_db_schema::source::{comment::Comment, community::Community, person::Person, post::Post};
use lemmy_apub_lib::{values::PublicUrl, ActivityCommonFields, ActivityHandler};
use lemmy_db_queries::source::{comment::Comment_, community::Community_, post::Post_};
use lemmy_db_schema::source::{comment::Comment, community::Community, post::Post};
use lemmy_utils::LemmyError;
use lemmy_websocket::{LemmyContext, UserOperationCrud};
use url::Url;
@ -56,20 +46,14 @@ impl ActivityHandler for DeletePostCommentOrCommunity {
request_counter: &mut i32,
) -> Result<(), LemmyError> {
verify_activity(self.common())?;
let object_community =
get_or_fetch_and_upsert_community(&self.object, context, request_counter).await;
// deleting a community (set counter 0 to only fetch from local db)
if object_community.is_ok() {
verify_mod_action(&self.common.actor, self.object.clone(), context).await?;
}
// deleting a post or comment
else {
verify_person_in_community(&self.common().actor, &self.cc[0], context, request_counter)
.await?;
let object_creator =
get_post_or_comment_actor_id(&self.object, context, request_counter).await?;
verify_urls_match(&self.common.actor, &object_creator)?;
}
verify_delete_activity(
&self.object,
&self.cc[0],
&self.common,
context,
request_counter,
)
.await?;
Ok(())
}
@ -78,54 +62,34 @@ impl ActivityHandler for DeletePostCommentOrCommunity {
context: &LemmyContext,
request_counter: &mut i32,
) -> Result<(), LemmyError> {
let object_community =
get_or_fetch_and_upsert_community(&self.object, context, request_counter).await;
// deleting a community
if let Ok(community) = object_community {
if community.local {
// repeat these checks just to be sure
verify_person_in_community(&self.common().actor, &self.cc[0], context, request_counter)
.await?;
verify_mod_action(&self.common.actor, self.object.clone(), context).await?;
let mod_ =
get_or_fetch_and_upsert_person(&self.common.actor, context, request_counter).await?;
community.send_delete(mod_, context).await?;
}
let deleted_community = blocking(context.pool(), move |conn| {
Community::update_deleted(conn, community.id, true)
})
.await??;
use UserOperationCrud::*;
match DeletableObjects::read_from_db(&self.object, context).await? {
DeletableObjects::Community(community) => {
if community.local {
let mod_ =
get_or_fetch_and_upsert_person(&self.common.actor, context, request_counter).await?;
community.send_delete(mod_, context).await?;
}
send_community_message(
deleted_community.id,
UserOperationCrud::DeleteCommunity,
context,
)
.await
}
// deleting a post or comment
else {
match get_or_fetch_and_insert_post_or_comment(&self.object, context, request_counter).await? {
PostOrComment::Post(post) => {
let deleted_post = blocking(context.pool(), move |conn| {
Post::update_deleted(conn, post.id, true)
})
.await??;
send_post_message(deleted_post.id, UserOperationCrud::EditPost, context).await
}
PostOrComment::Comment(comment) => {
let deleted_comment = blocking(context.pool(), move |conn| {
Comment::update_deleted(conn, comment.id, true)
})
.await??;
send_comment_message(
deleted_comment.id,
vec![],
UserOperationCrud::EditComment,
context,
)
.await
}
let deleted_community = blocking(context.pool(), move |conn| {
Community::update_deleted(conn, community.id, true)
})
.await??;
send_community_message(deleted_community.id, DeleteCommunity, context).await
}
DeletableObjects::Post(post) => {
let deleted_post = blocking(context.pool(), move |conn| {
Post::update_deleted(conn, post.id, true)
})
.await??;
send_post_message(deleted_post.id, EditPost, context).await
}
DeletableObjects::Comment(comment) => {
let deleted_comment = blocking(context.pool(), move |conn| {
Comment::update_deleted(conn, comment.id, true)
})
.await??;
send_comment_message(deleted_comment.id, vec![], EditComment, context).await
}
}
}
@ -134,26 +98,3 @@ impl ActivityHandler for DeletePostCommentOrCommunity {
&self.common
}
}
async fn get_post_or_comment_actor_id(
object: &Url,
context: &LemmyContext,
request_counter: &mut i32,
) -> Result<Url, LemmyError> {
let actor_id =
match get_or_fetch_and_insert_post_or_comment(object, context, request_counter).await? {
PostOrComment::Post(post) => {
let creator_id = post.creator_id;
blocking(context.pool(), move |conn| Person::read(conn, creator_id))
.await??
.actor_id()
}
PostOrComment::Comment(comment) => {
let creator_id = comment.creator_id;
blocking(context.pool(), move |conn| Person::read(conn, creator_id))
.await??
.actor_id()
}
};
Ok(actor_id)
}

82
crates/apub/src/activities/deletion/mod.rs
View file

@ -1,2 +1,84 @@
use crate::{
activities::{verify_mod_action, verify_person_in_community},
ActorType,
};
use lemmy_api_common::blocking;
use lemmy_apub_lib::{verify_domains_match, ActivityCommonFields};
use lemmy_db_queries::ApubObject;
use lemmy_db_schema::{
source::{comment::Comment, community::Community, post::Post},
DbUrl,
};
use lemmy_utils::LemmyError;
use lemmy_websocket::LemmyContext;
use url::Url;
pub mod delete;
pub mod undo_delete;
pub enum DeletableObjects {
Community(Box<Community>),
Comment(Box<Comment>),
Post(Box<Post>),
}
impl DeletableObjects {
pub(crate) async fn read_from_db(
ap_id: &Url,
context: &LemmyContext,
) -> Result<DeletableObjects, LemmyError> {
let id: DbUrl = ap_id.clone().into();
if let Some(c) = DeletableObjects::read_type_from_db::<Community>(id.clone(), context).await? {
return Ok(DeletableObjects::Community(Box::new(c)));
}
if let Some(p) = DeletableObjects::read_type_from_db::<Post>(id.clone(), context).await? {
return Ok(DeletableObjects::Post(Box::new(p)));
}
if let Some(c) = DeletableObjects::read_type_from_db::<Comment>(id.clone(), context).await? {
return Ok(DeletableObjects::Comment(Box::new(c)));
}
Err(diesel::NotFound.into())
}
// TODO: a method like this should be provided by fetcher module
async fn read_type_from_db<Type: ApubObject + Send + 'static>(
ap_id: DbUrl,
context: &LemmyContext,
) -> Result<Option<Type>, LemmyError> {
blocking(context.pool(), move |conn| {
Type::read_from_apub_id(conn, &ap_id).ok()
})
.await
}
}
pub(in crate::activities::deletion) async fn verify_delete_activity(
object: &Url,
cc: &Url,
common: &ActivityCommonFields,
context: &LemmyContext,
request_counter: &mut i32,
) -> Result<(), LemmyError> {
let object = DeletableObjects::read_from_db(object, context).await?;
match object {
DeletableObjects::Community(c) => {
if c.local {
// can only do this check for local community, in remote case it would try to fetch the
// deleted community (which fails)
verify_person_in_community(&common.actor, cc, context, request_counter).await?;
}
verify_mod_action(&common.actor, c.actor_id(), context).await?;
}
DeletableObjects::Post(p) => {
verify_person_in_community(&common.actor, cc, context, request_counter).await?;
// domain of post ap_id and post.creator ap_id are identical, so we just check the former
verify_domains_match(&common.actor, &p.ap_id.into())?;
}
DeletableObjects::Comment(c) => {
verify_person_in_community(&common.actor, cc, context, request_counter).await?;
verify_domains_match(&common.actor, &c.ap_id.into())?;
}
}
Ok(())
}

110
crates/apub/src/activities/deletion/undo_delete.rs
View file

@ -2,23 +2,16 @@ use crate::{
activities::{
comment::send_websocket_message as send_comment_message,
community::send_websocket_message as send_community_message,
deletion::delete::DeletePostCommentOrCommunity,
deletion::{delete::DeletePostCommentOrCommunity, verify_delete_activity, DeletableObjects},
post::send_websocket_message as send_post_message,
verify_activity,
verify_mod_action,
verify_person_in_community,
},
fetcher::{
community::get_or_fetch_and_upsert_community,
objects::get_or_fetch_and_insert_post_or_comment,
person::get_or_fetch_and_upsert_person,
},
fetcher::person::get_or_fetch_and_upsert_person,
CommunityType,
PostOrComment,
};
use activitystreams::activity::kind::UndoType;
use lemmy_api_common::blocking;
use lemmy_apub_lib::{values::PublicUrl, verify_urls_match, ActivityCommonFields, ActivityHandler};
use lemmy_apub_lib::{values::PublicUrl, ActivityCommonFields, ActivityHandler};
use lemmy_db_queries::source::{comment::Comment_, community::Community_, post::Post_};
use lemmy_db_schema::source::{comment::Comment, community::Community, post::Post};
use lemmy_utils::LemmyError;
@ -46,18 +39,14 @@ impl ActivityHandler for UndoDeletePostCommentOrCommunity {
) -> Result<(), LemmyError> {
verify_activity(self.common())?;
self.object.verify(context, request_counter).await?;
let object_community =
get_or_fetch_and_upsert_community(&self.object.object, context, request_counter).await;
// restoring a community
if object_community.is_ok() {
verify_mod_action(&self.common.actor, self.object.object.clone(), context).await?;
}
// restoring a post or comment
else {
verify_person_in_community(&self.common().actor, &self.cc[0], context, request_counter)
.await?;
verify_urls_match(&self.common.actor, &self.object.common().actor)?;
}
verify_delete_activity(
&self.object.object,
&self.cc[0],
&self.common,
context,
request_counter,
)
.await?;
Ok(())
}
@ -66,56 +55,35 @@ impl ActivityHandler for UndoDeletePostCommentOrCommunity {
context: &LemmyContext,
request_counter: &mut i32,
) -> Result<(), LemmyError> {
let object_community =
get_or_fetch_and_upsert_community(&self.object.object, context, request_counter).await;
// restoring a community
if let Ok(community) = object_community {
if community.local {
// repeat these checks just to be sure
verify_person_in_community(&self.common().actor, &self.cc[0], context, request_counter)
.await?;
verify_mod_action(&self.common.actor, self.object.object.clone(), context).await?;
let mod_ =
get_or_fetch_and_upsert_person(&self.common.actor, context, request_counter).await?;
community.send_undo_delete(mod_, context).await?;
}
let deleted_community = blocking(context.pool(), move |conn| {
Community::update_deleted(conn, community.id, false)
})
.await??;
use UserOperationCrud::*;
let object = DeletableObjects::read_from_db(&self.object.object, context).await?;
match object {
DeletableObjects::Community(community) => {
if community.local {
let mod_ =
get_or_fetch_and_upsert_person(&self.common.actor, context, request_counter).await?;
community.send_undo_delete(mod_, context).await?;
}
send_community_message(
deleted_community.id,
UserOperationCrud::EditCommunity,
context,
)
.await
}
// restoring a post or comment
else {
match get_or_fetch_and_insert_post_or_comment(&self.object.object, context, request_counter)
.await?
{
PostOrComment::Post(post) => {
let deleted_post = blocking(context.pool(), move |conn| {
Post::update_deleted(conn, post.id, false)
})
.await??;
send_post_message(deleted_post.id, UserOperationCrud::EditPost, context).await
}
PostOrComment::Comment(comment) => {
let deleted_comment = blocking(context.pool(), move |conn| {
Comment::update_deleted(conn, comment.id, false)
})
.await??;
send_comment_message(
deleted_comment.id,
vec![],
UserOperationCrud::EditComment,
context,
)
.await
}
let deleted_community = blocking(context.pool(), move |conn| {
Community::update_deleted(conn, community.id, false)
})
.await??;
send_community_message(deleted_community.id, EditCommunity, context).await
}
DeletableObjects::Post(post) => {
let deleted_post = blocking(context.pool(), move |conn| {
Post::update_deleted(conn, post.id, false)
})
.await??;
send_post_message(deleted_post.id, EditPost, context).await
}
DeletableObjects::Comment(comment) => {
let deleted_comment = blocking(context.pool(), move |conn| {
Comment::update_deleted(conn, comment.id, false)
})
.await??;
send_comment_message(deleted_comment.id, vec![], EditComment, context).await
}
}
}