]> Untitled Git - lemmy.git/blobdiff - crates/apub/src/activities/deletion/undo_delete.rs
Moving settings to Database. (#2492)
[lemmy.git] / crates / apub / src / activities / deletion / undo_delete.rs
index 1de5ca587ead823f4e331b99c1a74ed36030a7bf..f73c780c2de38670340d54a61f00fac5fe860786 100644 (file)
 use crate::{
   activities::{
-    comment::send_websocket_message as send_comment_message,
-    community::send_websocket_message as send_community_message,
-    deletion::delete::DeletePostCommentOrCommunity,
-    post::send_websocket_message as send_post_message,
-    verify_activity,
-    verify_mod_action,
-    verify_person_in_community,
+    community::announce::GetCommunity,
+    deletion::{receive_delete_action, verify_delete_activity, DeletableObjects},
+    generate_activity_id,
   },
-  fetcher::{
-    community::get_or_fetch_and_upsert_community,
-    objects::get_or_fetch_and_insert_post_or_comment,
-    person::get_or_fetch_and_upsert_person,
+  check_apub_id_valid,
+  fetch_local_site_data,
+  local_instance,
+  objects::{community::ApubCommunity, person::ApubPerson},
+  protocol::activities::deletion::{delete::Delete, undo_delete::UndoDelete},
+};
+use activitypub_federation::{core::object_id::ObjectId, data::Data, traits::ActivityHandler};
+use activitystreams_kinds::activity::UndoType;
+use lemmy_api_common::utils::blocking;
+use lemmy_db_schema::{
+  source::{
+    comment::{Comment, CommentUpdateForm},
+    community::{Community, CommunityUpdateForm},
+    moderator::{
+      ModRemoveComment,
+      ModRemoveCommentForm,
+      ModRemoveCommunity,
+      ModRemoveCommunityForm,
+      ModRemovePost,
+      ModRemovePostForm,
+    },
+    post::{Post, PostUpdateForm},
   },
-  CommunityType,
-  PostOrComment,
+  traits::Crud,
+};
+use lemmy_utils::error::LemmyError;
+use lemmy_websocket::{
+  send::{send_comment_ws_message_simple, send_community_ws_message, send_post_ws_message},
+  LemmyContext,
+  UserOperationCrud,
 };
-use activitystreams::activity::kind::UndoType;
-use lemmy_api_common::blocking;
-use lemmy_apub_lib::{verify_urls_match, ActivityCommonFields, ActivityHandler, PublicUrl};
-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;
 
-#[derive(Clone, Debug, serde::Deserialize, serde::Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct UndoDeletePostCommentOrCommunity {
-  to: PublicUrl,
-  object: DeletePostCommentOrCommunity,
-  cc: [Url; 1],
-  #[serde(rename = "type")]
-  kind: UndoType,
-  #[serde(flatten)]
-  common: ActivityCommonFields,
-}
-
 #[async_trait::async_trait(?Send)]
-impl ActivityHandler for UndoDeletePostCommentOrCommunity {
+impl ActivityHandler for UndoDelete {
+  type DataType = LemmyContext;
+  type Error = LemmyError;
+
+  fn id(&self) -> &Url {
+    &self.id
+  }
+
+  fn actor(&self) -> &Url {
+    self.actor.inner()
+  }
+
+  #[tracing::instrument(skip_all)]
   async fn verify(
     &self,
-    context: &LemmyContext,
+    context: &Data<LemmyContext>,
     request_counter: &mut i32,
   ) -> Result<(), LemmyError> {
-    verify_activity(self.common())?;
+    let local_site_data = blocking(context.pool(), fetch_local_site_data).await??;
+    check_apub_id_valid(self.id(), &local_site_data, context.settings())
+      .map_err(LemmyError::from_message)?;
     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, context, request_counter).await?;
-      verify_urls_match(&self.common.actor, &self.object.common().actor)?;
-    }
+    verify_delete_activity(
+      &self.object,
+      self.object.summary.is_some(),
+      context,
+      request_counter,
+    )
+    .await?;
     Ok(())
   }
 
+  #[tracing::instrument(skip_all)]
   async fn receive(
-    &self,
-    context: &LemmyContext,
+    self,
+    context: &Data<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, 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??;
-
-      send_community_message(
-        deleted_community.id,
-        UserOperationCrud::EditCommunity,
+    if self.object.summary.is_some() {
+      UndoDelete::receive_undo_remove_action(
+        &self
+          .actor
+          .dereference(context, local_instance(context), request_counter)
+          .await?,
+        self.object.object.id(),
         context,
       )
       .await
+    } else {
+      receive_delete_action(
+        self.object.object.id(),
+        &self.actor,
+        false,
+        context,
+        request_counter,
+      )
+      .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
+  }
+}
+
+impl UndoDelete {
+  #[tracing::instrument(skip_all)]
+  pub(in crate::activities::deletion) fn new(
+    actor: &ApubPerson,
+    object: DeletableObjects,
+    to: Url,
+    community: Option<&Community>,
+    summary: Option<String>,
+    context: &LemmyContext,
+  ) -> Result<UndoDelete, LemmyError> {
+    let object = Delete::new(actor, object, to.clone(), community, summary, context)?;
+
+    let id = generate_activity_id(
+      UndoType::Undo,
+      &context.settings().get_protocol_and_hostname(),
+    )?;
+    let cc: Option<Url> = community.map(|c| c.actor_id.clone().into());
+    Ok(UndoDelete {
+      actor: ObjectId::new(actor.actor_id.clone()),
+      to: vec![to],
+      object,
+      cc: cc.into_iter().collect(),
+      kind: UndoType::Undo,
+      id,
+      unparsed: Default::default(),
+    })
+  }
+
+  #[tracing::instrument(skip_all)]
+  pub(in crate::activities) async fn receive_undo_remove_action(
+    actor: &ApubPerson,
+    object: &Url,
+    context: &LemmyContext,
+  ) -> Result<(), LemmyError> {
+    use UserOperationCrud::*;
+    match DeletableObjects::read_from_db(object, context).await? {
+      DeletableObjects::Community(community) => {
+        if community.local {
+          return Err(LemmyError::from_message(
+            "Only local admin can restore community",
+          ));
         }
-        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,
+        let form = ModRemoveCommunityForm {
+          mod_person_id: actor.id,
+          community_id: community.id,
+          removed: Some(false),
+          reason: None,
+          expires: None,
+        };
+        blocking(context.pool(), move |conn| {
+          ModRemoveCommunity::create(conn, &form)
+        })
+        .await??;
+        let deleted_community = blocking(context.pool(), move |conn| {
+          Community::update(
+            conn,
+            community.id,
+            &CommunityUpdateForm::builder().removed(Some(false)).build(),
           )
-          .await
-        }
+        })
+        .await??;
+        send_community_ws_message(deleted_community.id, EditCommunity, None, None, context).await?;
       }
+      DeletableObjects::Post(post) => {
+        let form = ModRemovePostForm {
+          mod_person_id: actor.id,
+          post_id: post.id,
+          removed: Some(false),
+          reason: None,
+        };
+        blocking(context.pool(), move |conn| {
+          ModRemovePost::create(conn, &form)
+        })
+        .await??;
+        let removed_post = blocking(context.pool(), move |conn| {
+          Post::update(
+            conn,
+            post.id,
+            &PostUpdateForm::builder().removed(Some(false)).build(),
+          )
+        })
+        .await??;
+        send_post_ws_message(removed_post.id, EditPost, None, None, context).await?;
+      }
+      DeletableObjects::Comment(comment) => {
+        let form = ModRemoveCommentForm {
+          mod_person_id: actor.id,
+          comment_id: comment.id,
+          removed: Some(false),
+          reason: None,
+        };
+        blocking(context.pool(), move |conn| {
+          ModRemoveComment::create(conn, &form)
+        })
+        .await??;
+        let removed_comment = blocking(context.pool(), move |conn| {
+          Comment::update(
+            conn,
+            comment.id,
+            &CommentUpdateForm::builder().removed(Some(false)).build(),
+          )
+        })
+        .await??;
+        send_comment_ws_message_simple(removed_comment.id, EditComment, context).await?;
+      }
+      DeletableObjects::PrivateMessage(_) => unimplemented!(),
     }
+    Ok(())
   }
+}
 
-  fn common(&self) -> &ActivityCommonFields {
-    &self.common
+#[async_trait::async_trait(?Send)]
+impl GetCommunity for UndoDelete {
+  #[tracing::instrument(skip_all)]
+  async fn get_community(
+    &self,
+    context: &LemmyContext,
+    request_counter: &mut i32,
+  ) -> Result<ApubCommunity, LemmyError> {
+    self.object.get_community(context, request_counter).await
   }
 }