fix: remove addressing ad-hoc cases

upub/core/src/selector/query.rs

@@ -1,4 +1,4 @@
-use sea_orm::{sea_query::{IntoColumnRef, IntoCondition}, ColumnTrait, Condition, EntityName, EntityTrait, Iden, Iterable, Order, QueryFilter, QueryOrder, QuerySelect, RelationTrait, Select, SelectColumns};
+use sea_orm::{sea_query::{IntoColumnRef, IntoCondition}, ActiveValue::{NotSet, Set}, ColumnTrait, Condition, EntityName, EntityTrait, Iden, Insert, Iterable, Order, QueryFilter, QueryOrder, QuerySelect, RelationTrait, Select, SelectColumns};
 use crate::model;
 
 pub struct Query;
@@ -112,4 +112,16 @@ impl Query {
 
 		select
 	}
+
+	pub fn notify(activity: i64, actor: i64) -> Insert<model::notification::ActiveModel> {
+		model::notification::Entity::insert(
+			model::notification::ActiveModel {
+				internal: NotSet,
+				activity: Set(activity),
+				actor: Set(actor),
+				seen: Set(false),
+				published: Set(chrono::Utc::now()),
+			}
+		)
+	}
 }

upub/core/src/traits/normalize.rs

@@ -166,43 +166,19 @@ impl Normalizer for crate::Context {
 		//      since ActivityPub is a mess most software doesnt' really respect addressing, or care
 		//      about inserting it correctly.
 		//
-		//   *  we can assume that Follow activities should *at least* be
+		//   *  we can assume that Follow and Accept activities should *at least* be
 		//      addressed to their target, since how would anyone be able to accept it otherwise???
-		//
-		//   *  announces are messy because everything is in the `to` field. we should probably move
-		//      followers to `cc` and keep just as#Public and the original poster in `to`, so that they
-		//      get notified but everyone else sees the object again
-		//
-		//   *  misskey sends us mentions without including us in the `to` field! basically the Create
-		//      will have a `tag` mention but it will not include the mentioned user in the `to` field
 
 		match activity_model.activity_type {
-			apb::ActivityType::Follow => {
+			apb::ActivityType::Follow
+			| apb::ActivityType::Accept(apb::AcceptType::Accept)
+			=> {
 				if let Some(ref target) = activity_model.object {
 					if !activity_model.to.0.contains(target) {
 						activity_model.to.0.push(target.clone());
 					}
 				}
 			},
-			apb::ActivityType::Announce => {
-				for target in activity_model.to.0.iter() {
-					if target.ends_with("followers") {
-						activity_model.cc.0.push(target.clone());
-					}
-				}
-				activity_model.to.0.retain(|x| !x.ends_with("followers"));
-			},
-			apb::ActivityType::Create => {
-				if let Some(object) = activity.object().get() {
-					for tag in object.tag().flat() {
-						if let Node::Link(l) = tag {
-							if matches!(l.link_type(), Ok(apb::LinkType::Mention)) {
-								activity_model.to.0.push(l.href().to_string());
-							}
-						}
-					}
-				}
-			},
 			_ => {},
 		}
 

upub/core/src/traits/process.rs

@@ -71,9 +71,25 @@ pub async fn create(ctx: &crate::Context, activity: impl apb::Activity, tx: &Dat
 			tracing::warn!("failed fetching replies for received object: {e}");
 		}
 	}
+
+	let notified = object_node.tag()
+		.flat()
+		.into_iter()
+		.filter_map(|x| Some(x.id().ok()?.to_string()))
+		.collect::<Vec<String>>();
+
 	let object_model = ctx.insert_object(object_node, tx).await?;
 
-	ctx.insert_activity(activity, tx).await?;
+	let activity_model = ctx.insert_activity(activity, tx).await?;
+
+	for uid in notified {
+		if !ctx.is_local(&uid) { continue }
+		if let Some(actor_internal) = crate::model::actor::Entity::ap_to_internal(&uid, tx).await? {
+			crate::Query::notify(activity_model.internal, actor_internal)
+				.exec(tx)
+				.await?;
+		}
+	}
 
 	tracing::debug!("{} posted {}", object_model.attributed_to.as_deref().unwrap_or("<anonymous>"), object_model.id);
 	Ok(())
@@ -103,9 +119,20 @@ pub async fn like(ctx: &crate::Context, activity: impl apb::Activity, tx: &Datab
 		.exec(tx)
 		.await?;
 
-	// likes without addressing are "silent likes", process them but dont store activity
+	// likes without addressing are "silent likes", process them but dont store activity or notify
 	if !activity.addressed().is_empty() {
-		ctx.insert_activity(activity, tx).await?;
+		let activity_model = ctx.insert_activity(activity, tx).await?;
+
+		// TODO check that object author is in this like addressing!!! otherwise skip notification
+		if let Some(ref attributed_to) = obj.attributed_to {
+			if ctx.is_local(attributed_to) {
+				if let Some(actor_internal) = crate::model::actor::Entity::ap_to_internal(attributed_to, tx).await? {
+					crate::Query::notify(activity_model.internal, actor_internal)
+						.exec(tx)
+						.await?;
+				}
+			}
+		}
 	}
 
 	tracing::debug!("{} liked {}", actor.id, obj.id);
@@ -134,7 +161,18 @@ pub async fn dislike(ctx: &crate::Context, activity: impl apb::Activity, tx: &Da
 
 	// dislikes without addressing are "silent dislikes", process them but dont store activity
 	if !activity.addressed().is_empty() {
-		ctx.insert_activity(activity, tx).await?;
+		let activity_model = ctx.insert_activity(activity, tx).await?;
+
+		// TODO check that object author is in this like addressing!!! otherwise skip notification
+		if let Some(ref attributed_to) = obj.attributed_to {
+			if ctx.is_local(attributed_to) {
+				if let Some(actor_internal) = crate::model::actor::Entity::ap_to_internal(attributed_to, tx).await? {
+					crate::Query::notify(activity_model.internal, actor_internal)
+						.exec(tx)
+						.await?;
+				}
+			}
+		}
 	}
 
 	tracing::debug!("{} disliked {}", actor.id, obj.id);
@@ -149,6 +187,12 @@ pub async fn follow(ctx: &crate::Context, activity: impl apb::Activity, tx: &Dat
 	let target_actor = ctx.fetch_user(activity.object().id()?, tx).await?;
 	let activity_model = ctx.insert_activity(activity, tx).await?;
 
+	if ctx.is_local(&target_actor.id) {
+		crate::Query::notify(activity_model.internal, target_actor.internal)
+			.exec(tx)
+			.await?;
+	}
+
 	if let Some(relation) = crate::model::relation::Entity::find()
 		.filter(crate::model::relation::Column::Follower.eq(source_actor.internal))
 		.filter(crate::model::relation::Column::Following.eq(target_actor.internal))
@@ -206,6 +250,14 @@ pub async fn accept(ctx: &crate::Context, activity: impl apb::Activity, tx: &Dat
 
 	let activity_model = ctx.insert_activity(activity, tx).await?;
 
+	if ctx.is_local(&follow_activity.actor) {
+		if let Some(actor_internal) = crate::model::actor::Entity::ap_to_internal(&follow_activity.actor, tx).await? {
+			crate::Query::notify(activity_model.internal, actor_internal)
+				.exec(tx)
+				.await?;
+		}
+	}
+
 	let follower = crate::model::actor::Entity::ap_to_internal(&follow_activity.actor, tx)
 		.await?
 		.ok_or(ProcessorError::Incomplete)?;
@@ -256,6 +308,17 @@ pub async fn reject(ctx: &crate::Context, activity: impl apb::Activity, tx: &Dat
 
 	let activity_model = ctx.insert_activity(activity, tx).await?;
 
+	// TODO most software doesn't show this, but i think instead we should?? if someone rejects it's
+	// better to know it clearly rather than not knowing if it got lost and maybe retry (being more
+	// annoying)
+	if ctx.is_local(&follow_activity.actor) {
+		if let Some(actor_internal) = crate::model::actor::Entity::ap_to_internal(&follow_activity.actor, tx).await? {
+			crate::Query::notify(activity_model.internal, actor_internal)
+				.exec(tx)
+				.await?;
+		}
+	}
+
 	crate::model::relation::Entity::delete_many()
 		.filter(crate::model::relation::Column::Activity.eq(activity_model.internal))
 		.exec(tx)
@@ -276,6 +339,7 @@ pub async fn delete(ctx: &crate::Context, activity: impl apb::Activity, tx: &Dat
 	if !activity.addressed().is_empty() {
 		ctx.insert_activity(activity, tx).await?;
 	}
+	// TODO we should delete notifications from CREATEs related to objects we deleted
 	tracing::debug!("deleted '{oid}'");
 	Ok(())
 }
@@ -398,24 +462,38 @@ pub async fn undo(ctx: &crate::Context, activity: impl apb::Activity, tx: &Datab
 		_ => return Err(ProcessorError::Unprocessable(activity.id()?.to_string())),
 	}
 
-	// we should store undos to make local delete deliveries work and relations make sense
+	// TODO we should store undos to make local delete deliveries work and relations make sense
 	// except when they have empty addressing
 	// so that also remote "secret" undos dont get stored
 	if !activity.addressed().is_empty() {
 		ctx.insert_activity(activity, tx).await?;
 	}
 
+	if let Some(internal) = crate::model::activity::Entity::ap_to_internal(undone_activity.id()?, tx).await? {
+		crate::model::notification::Entity::delete_many()
+			.filter(crate::model::notification::Column::Activity.eq(internal))
+			.exec(tx)
+			.await?;
+	}
+
 	Ok(())
 }
 
 pub async fn announce(ctx: &crate::Context, activity: impl apb::Activity, tx: &DatabaseTransaction) -> Result<(), ProcessorError> {
 	let announced_id = activity.object().id()?.to_string();
 
-	match match ctx.find_internal(&announced_id).await? {
+	let object = match ctx.find_internal(&announced_id).await? {
 		// if we already have this activity, skip it
 		Some(crate::context::Internal::Activity(_)) => return Ok(()), // already processed
 		// actors and objects which we already have
-		Some(x) => x,
+		Some(crate::context::Internal::Actor(_)) => return Err(ProcessorError::Unprocessable(activity.id()?.to_string())),
+		// objects that we already have
+		Some(crate::context::Internal::Object(internal)) => {
+			crate::model::object::Entity::find_by_id(internal)
+				.one(tx)
+				.await?
+				.ok_or_else(|| sea_orm::DbErr::RecordNotFound(format!("object#{internal}")))?
+		},
 		// something new, fetch it!
 		None => {
 			match ctx.pull(&announced_id).await? {
@@ -424,29 +502,24 @@ pub async fn announce(ctx: &crate::Context, activity: impl apb::Activity, tx: &D
 				// actors are not processable at all
 				Pull::Actor(_) => return Err(ProcessorError::Unprocessable(activity.id()?.to_string())),
 				// objects are processed down below, make a mock Internal::Object(internal)
-				Pull::Object(x) =>
+				Pull::Object(x) => ctx.resolve_object(x, tx).await?,
-					crate::context::Internal::Object(
-						ctx.resolve_object(x, tx).await?.internal
-					),
 			}
 		}
-	} {
+	};
-		crate::context::Internal::Activity(_) => unreachable!(),
+
-		crate::context::Internal::Actor(_) => Err(ProcessorError::Unprocessable(activity.id()?.to_string())),
-		crate::context::Internal::Object(internal) => {
 	let actor = ctx.fetch_user(activity.actor().id()?, tx).await?;
 
 	// we only care about announces produced by "Person" actors, because there's intention
 	// anything shared by groups, services or applications is automated: fetch it and be done
 	if actor.actor_type == apb::ActorType::Person {
 		// if this user never "boosted" this object before, increase its counter
-				if !crate::model::announce::Entity::find_by_uid_oid(actor.internal, internal)
+		if !crate::model::announce::Entity::find_by_uid_oid(actor.internal, object.internal)
 			.any(tx)
 			.await?
 		{
 			crate::model::object::Entity::update_many()
 				.col_expr(crate::model::object::Column::Announces, Expr::col(crate::model::object::Column::Announces).add(1))
-						.filter(crate::model::object::Column::Internal.eq(internal))
+				.filter(crate::model::object::Column::Internal.eq(object.internal))
 				.exec(tx)
 				.await?;
 		}
@@ -454,7 +527,7 @@ pub async fn announce(ctx: &crate::Context, activity: impl apb::Activity, tx: &D
 		let share = crate::model::announce::ActiveModel {
 			internal: NotSet,
 			actor: Set(actor.internal),
-					object: Set(internal),
+			object: Set(object.internal),
 			published: Set(activity.published().unwrap_or(chrono::Utc::now())),
 		};
 
@@ -468,11 +541,19 @@ pub async fn announce(ctx: &crate::Context, activity: impl apb::Activity, tx: &D
 	//      or maybe create fake objects that reference the original one
 	//      idk!!!!
 	if actor.actor_type == apb::ActorType::Person || ctx.is_local(&actor.id) {
-				ctx.insert_activity(activity, tx).await?;
+		let activity_model = ctx.insert_activity(activity, tx).await?;
+
+		if let Some(ref attributed_to) = object.attributed_to {
+			if ctx.is_local(attributed_to) {
+				if let Some(actor_internal) = crate::model::actor::Entity::ap_to_internal(attributed_to, tx).await? {
+					crate::Query::notify(activity_model.internal, actor_internal)
+						.exec(tx)
+						.await?;
+				}
+			}
+		}
 	}
 
 	tracing::debug!("{} shared {}", actor.id, announced_id);
 	Ok(())
-		},
-	}
 }

upub/migrations/src/m20240626_000001_add_notifications_table.rs

@@ -55,6 +55,10 @@ impl MigrationTrait for Migration {
 			)
 			.await?;
 
+		manager
+			.create_index(Index::create().name("index-notifications-activity").table(Notifications::Table).col(Notifications::Activity).to_owned())
+			.await?;
+
 		manager
 			.create_index(
 				Index::create()