Added test case for parsing community from apub json

- fixed a bug with objectid (de)serialization - fixed a bug with outbox fetching (ref #1582)
2021-10-19 18:02:34 +02:00 · 2021-10-19 18:02:34 +02:00 · 4d0a189956
parent 25ea11f82e
commit 4d0a189956
22 changed files with 143 additions and 52 deletions
--- a/crates/apub/assets/lemmy-community.json
+++ b/crates/apub/assets/lemmy-community.json
@ -0,0 +1,46 @@
+{
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    {
+      "sensitive": "as:sensitive",
+      "sc": "http://schema.org#",
+      "matrixUserId": {
+        "type": "sc:Text",
+        "id": "as:alsoKnownAs"
+      },
+      "stickied": "as:stickied",
+      "pt": "https://join-lemmy.org#",
+      "comments_enabled": {
+        "type": "sc:Boolean",
+        "id": "pt:commentsEnabled"
+      },
+      "moderators": "as:moderators"
+    },
+    "https://w3id.org/security/v1"
+  ],
+  "type": "Group",
+  "id": "https://lemmy.ml/c/meta",
+  "preferredUsername": "meta",
+  "name": "lemmy.ml meta",
+  "content": "<p>Anything about the lemmy.ml instance and its moderation.</p>\n<p>For discussion about the Lemmy software project, go to <a href=\"https://lemmy.ml/c/lemmy\">!lemmy@lemmy.ml</a>.</p>\n",
+  "mediaType": "text/html",
+  "source": {
+    "content": "Anything about the lemmy.ml instance and its moderation. \n\nFor discussion about the Lemmy software project, go to [!lemmy@lemmy.ml](https://lemmy.ml/c/lemmy).",
+    "mediaType": "text/markdown"
+  },
+  "sensitive": false,
+  "moderators": "https://lemmy.ml/c/meta/moderators",
+  "inbox": "https://lemmy.ml/c/meta/inbox",
+  "outbox": "https://lemmy.ml/c/meta/outbox",
+  "followers": "https://lemmy.ml/c/meta/followers",
+  "endpoints": {
+    "sharedInbox": "https://lemmy.ml/inbox"
+  },
+  "publicKey": {
+    "id": "https://lemmy.ml/c/meta#main-key",
+    "owner": "https://lemmy.ml/c/meta",
+    "publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApLImCO5LEXMWb6lPCfCI\necpxU17j8CFfrDJLUWcuCmKO9KxJFmsv9uY2sYr9YX9CD4o+jnJ4D/e+/D+UeJiD\naJ3aYLEjLm+u6KuAGVREjSLzp1Js/6F2k0MIIQueiO5BBiootEY6pv3CwqqMC9L4\npWvIjmd03dMBhU1DTAblrj61oGj3c5l0OPdjeW7XnTPSrCZvaQ/1PWwVyUj0y/SC\nHiUiUiqUD88aPB8c7s85Svzs5RFT8WHcelPXJ7ydhYlU8R2tE1Octjy9Gb1R38k4\ns62LiwlRUAIzvnpMWOBi60aRpL8+IuZXoB2cCEyX5SQ+ETVp5DobHDgI0zzBEjfD\nkQIDAQAB\n-----END PUBLIC KEY-----\n"
+  },
+  "published": "2021-06-14T22:50:50.985762+00:00",
+  "updated": "2021-06-14T23:29:55.801468+00:00"
+}
--- a/crates/apub/assets/lemmy-person.json
+++ b/crates/apub/assets/lemmy-person.json
@ -2,18 +2,18 @@
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
-      "moderators": "as:moderators",
-      "sensitive": "as:sensitive",
-      "pt": "https://join-lemmy.org#",
      "sc": "http://schema.org#",
-      "stickied": "as:stickied",
-      "matrixUserId": {
-        "type": "sc:Text",
-        "id": "as:alsoKnownAs"
-      },
+      "pt": "https://join-lemmy.org#",
      "comments_enabled": {
        "type": "sc:Boolean",
        "id": "pt:commentsEnabled"
+      },
+      "stickied": "as:stickied",
+      "sensitive": "as:sensitive",
+      "moderators": "as:moderators",
+      "matrixUserId": {
+        "type": "sc:Text",
+        "id": "as:alsoKnownAs"
      }
    },
    "https://w3id.org/security/v1"
--- a/crates/apub/src/activities/comment/create_or_update.rs
+++ b/crates/apub/src/activities/comment/create_or_update.rs
@ -11,6 +11,7 @@ use crate::{
  },
  context::lemmy_context,
  fetcher::object_id::ObjectId,
+  migrations::PublicUrlMigration,
  objects::{
    comment::{ApubComment, Note},
    community::ApubCommunity,
@ -22,7 +23,6 @@ use lemmy_api_common::{blocking, check_post_deleted_or_removed};
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType, FromApub, ToApub},
-  values::PublicUrl,
  verify::verify_domains_match,
 };
 use lemmy_db_schema::{
@ -38,7 +38,7 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct CreateOrUpdateComment {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  object: Note,
  cc: Vec<Url>,
  tag: Vec<Mention>,
@ -76,7 +76,7 @@ impl CreateOrUpdateComment {

    let create_or_update = CreateOrUpdateComment {
      actor: ObjectId::new(actor.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object: comment.to_apub(context.pool()).await?,
      cc: maa.ccs,
      tag: maa.tags,
--- a/crates/apub/src/activities/community/add_mod.rs
+++ b/crates/apub/src/activities/community/add_mod.rs
@ -10,6 +10,7 @@ use crate::{
  context::lemmy_context,
  fetcher::object_id::ObjectId,
  generate_moderators_url,
+  migrations::PublicUrlMigration,
  objects::{community::ApubCommunity, person::ApubPerson},
 };
 use activitystreams::{
@ -22,7 +23,6 @@ use lemmy_api_common::blocking;
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType},
-  values::PublicUrl,
 };
 use lemmy_db_schema::{
  source::community::{CommunityModerator, CommunityModeratorForm},
@ -37,7 +37,7 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct AddMod {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  object: ObjectId<ApubPerson>,
  target: Url,
  cc: [ObjectId<ApubCommunity>; 1],
@ -63,7 +63,7 @@ impl AddMod {
    )?;
    let add = AddMod {
      actor: ObjectId::new(actor.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object: ObjectId::new(added_mod.actor_id()),
      target: generate_moderators_url(&community.actor_id)?.into(),
      cc: [ObjectId::new(community.actor_id())],
--- a/crates/apub/src/activities/community/announce.rs
+++ b/crates/apub/src/activities/community/announce.rs
@ -21,6 +21,7 @@ use crate::{
  fetcher::object_id::ObjectId,
  http::is_activity_already_known,
  insert_activity,
+  migrations::PublicUrlMigration,
  objects::community::ApubCommunity,
  send_lemmy_activity,
  CommunityType,
@ -34,7 +35,6 @@ use activitystreams::{
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType},
-  values::PublicUrl,
 };
 use lemmy_utils::LemmyError;
 use lemmy_websocket::LemmyContext;
@ -63,7 +63,7 @@ pub enum AnnouncableActivities {
 #[serde(rename_all = "camelCase")]
 pub struct AnnounceActivity {
  actor: ObjectId<ApubCommunity>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  object: AnnouncableActivities,
  cc: Vec<Url>,
  #[serde(rename = "type")]
@ -84,7 +84,7 @@ impl AnnounceActivity {
  ) -> Result<(), LemmyError> {
    let announce = AnnounceActivity {
      actor: ObjectId::new(community.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object,
      cc: vec![community.followers_url()],
      kind: AnnounceType::Announce,
--- a/crates/apub/src/activities/community/block_user.rs
+++ b/crates/apub/src/activities/community/block_user.rs
@ -8,6 +8,7 @@ use crate::{
  },
  context::lemmy_context,
  fetcher::object_id::ObjectId,
+  migrations::PublicUrlMigration,
  objects::{community::ApubCommunity, person::ApubPerson},
 };
 use activitystreams::{
@ -20,7 +21,6 @@ use lemmy_api_common::blocking;
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType},
-  values::PublicUrl,
 };
 use lemmy_db_schema::{
  source::community::{
@ -40,7 +40,7 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct BlockUserFromCommunity {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  pub(in crate::activities::community) object: ObjectId<ApubPerson>,
  cc: [ObjectId<ApubCommunity>; 1],
  #[serde(rename = "type")]
@ -61,7 +61,7 @@ impl BlockUserFromCommunity {
  ) -> Result<BlockUserFromCommunity, LemmyError> {
    Ok(BlockUserFromCommunity {
      actor: ObjectId::new(actor.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object: ObjectId::new(target.actor_id()),
      cc: [ObjectId::new(community.actor_id())],
      kind: BlockType::Block,
--- a/crates/apub/src/activities/community/remove_mod.rs
+++ b/crates/apub/src/activities/community/remove_mod.rs
@ -11,6 +11,7 @@ use crate::{
  context::lemmy_context,
  fetcher::object_id::ObjectId,
  generate_moderators_url,
+  migrations::PublicUrlMigration,
  objects::{community::ApubCommunity, person::ApubPerson},
 };
 use activitystreams::{
@ -23,7 +24,6 @@ use lemmy_api_common::blocking;
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType},
-  values::PublicUrl,
 };
 use lemmy_db_schema::{
  source::community::{CommunityModerator, CommunityModeratorForm},
@ -38,7 +38,7 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct RemoveMod {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  pub(in crate::activities) object: ObjectId<ApubPerson>,
  cc: [ObjectId<ApubCommunity>; 1],
  #[serde(rename = "type")]
@ -65,7 +65,7 @@ impl RemoveMod {
    )?;
    let remove = RemoveMod {
      actor: ObjectId::new(actor.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object: ObjectId::new(removed_mod.actor_id()),
      target: Some(generate_moderators_url(&community.actor_id)?.into()),
      id: id.clone(),
--- a/crates/apub/src/activities/community/undo_block_user.rs
+++ b/crates/apub/src/activities/community/undo_block_user.rs
@ -12,6 +12,7 @@ use crate::{
  },
  context::lemmy_context,
  fetcher::object_id::ObjectId,
+  migrations::PublicUrlMigration,
  objects::{community::ApubCommunity, person::ApubPerson},
 };
 use activitystreams::{
@ -24,7 +25,6 @@ use lemmy_api_common::blocking;
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType},
-  values::PublicUrl,
 };
 use lemmy_db_schema::{
  source::community::{CommunityPersonBan, CommunityPersonBanForm},
@ -39,7 +39,7 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct UndoBlockUserFromCommunity {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  object: BlockUserFromCommunity,
  cc: [ObjectId<ApubCommunity>; 1],
  #[serde(rename = "type")]
@ -66,7 +66,7 @@ impl UndoBlockUserFromCommunity {
    )?;
    let undo = UndoBlockUserFromCommunity {
      actor: ObjectId::new(actor.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object: block,
      cc: [ObjectId::new(community.actor_id())],
      kind: UndoType::Undo,
--- a/crates/apub/src/activities/community/update.rs
+++ b/crates/apub/src/activities/community/update.rs
@ -8,6 +8,7 @@ use crate::{
  },
  context::lemmy_context,
  fetcher::object_id::ObjectId,
+  migrations::PublicUrlMigration,
  objects::{
    community::{ApubCommunity, Group},
    person::ApubPerson,
@ -23,7 +24,6 @@ use lemmy_api_common::blocking;
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType, ToApub},
-  values::PublicUrl,
 };
 use lemmy_db_schema::{
  source::community::{Community, CommunityForm},
@ -40,7 +40,7 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct UpdateCommunity {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  // TODO: would be nice to use a separate struct here, which only contains the fields updated here
  object: Group,
  cc: [ObjectId<ApubCommunity>; 1],
@ -65,7 +65,7 @@ impl UpdateCommunity {
    )?;
    let update = UpdateCommunity {
      actor: ObjectId::new(actor.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object: community.to_apub(context.pool()).await?,
      cc: [ObjectId::new(community.actor_id())],
      kind: UpdateType::Update,
--- a/crates/apub/src/activities/deletion/delete.rs
+++ b/crates/apub/src/activities/deletion/delete.rs
@ -12,6 +12,7 @@ use crate::{
  },
  context::lemmy_context,
  fetcher::object_id::ObjectId,
+  migrations::PublicUrlMigration,
  objects::{community::ApubCommunity, person::ApubPerson},
 };
 use activitystreams::{
@ -25,7 +26,6 @@ use lemmy_api_common::blocking;
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType},
-  values::PublicUrl,
 };
 use lemmy_db_schema::{
  source::{
@ -66,7 +66,7 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct Delete {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  pub(in crate::activities::deletion) object: Url,
  pub(in crate::activities::deletion) cc: [ObjectId<ApubCommunity>; 1],
  #[serde(rename = "type")]
@ -144,7 +144,7 @@ impl Delete {
  ) -> Result<Delete, LemmyError> {
    Ok(Delete {
      actor: ObjectId::new(actor.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object: object_id,
      cc: [ObjectId::new(community.actor_id())],
      kind: DeleteType::Delete,
--- a/crates/apub/src/activities/deletion/undo_delete.rs
+++ b/crates/apub/src/activities/deletion/undo_delete.rs
@ -13,6 +13,7 @@ use crate::{
  },
  context::lemmy_context,
  fetcher::object_id::ObjectId,
+  migrations::PublicUrlMigration,
  objects::{community::ApubCommunity, person::ApubPerson},
 };
 use activitystreams::{
@ -26,7 +27,6 @@ use lemmy_api_common::blocking;
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType},
-  values::PublicUrl,
 };
 use lemmy_db_schema::source::{comment::Comment, community::Community, post::Post};
 use lemmy_utils::LemmyError;
@ -42,7 +42,7 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct UndoDelete {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  object: Delete,
  cc: [ObjectId<ApubCommunity>; 1],
  #[serde(rename = "type")]
@ -117,7 +117,7 @@ impl UndoDelete {
    )?;
    let undo = UndoDelete {
      actor: ObjectId::new(actor.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object,
      cc: [ObjectId::new(community.actor_id())],
      kind: UndoType::Undo,
--- a/crates/apub/src/activities/post/create_or_update.rs
+++ b/crates/apub/src/activities/post/create_or_update.rs
@ -10,6 +10,7 @@ use crate::{
  },
  context::lemmy_context,
  fetcher::object_id::ObjectId,
+  migrations::PublicUrlMigration,
  objects::{
    community::ApubCommunity,
    person::ApubPerson,
@ -22,7 +23,6 @@ use lemmy_api_common::blocking;
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType, FromApub, ToApub},
-  values::PublicUrl,
  verify::{verify_domains_match, verify_urls_match},
 };
 use lemmy_db_schema::{source::community::Community, traits::Crud};
@ -35,7 +35,7 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct CreateOrUpdatePost {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  object: Page,
  cc: [ObjectId<ApubCommunity>; 1],
  #[serde(rename = "type")]
@ -67,7 +67,7 @@ impl CreateOrUpdatePost {
    )?;
    let create_or_update = CreateOrUpdatePost {
      actor: ObjectId::new(actor.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object: post.to_apub(context.pool()).await?,
      cc: [ObjectId::new(community.actor_id())],
      kind,
--- a/crates/apub/src/activities/undo_remove.rs
+++ b/crates/apub/src/activities/undo_remove.rs
@ -5,6 +5,7 @@ use crate::{
    verify_activity,
  },
  fetcher::object_id::ObjectId,
+  migrations::PublicUrlMigration,
  objects::{community::ApubCommunity, person::ApubPerson},
 };
 use activitystreams::{
@ -16,7 +17,6 @@ use activitystreams::{
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler},
-  values::PublicUrl,
 };
 use lemmy_utils::LemmyError;
 use lemmy_websocket::LemmyContext;
@ -27,7 +27,7 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct UndoRemovePostCommentOrCommunity {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  // Note, there is no such thing as Undo/Remove/Mod, so we ignore that
  object: RemoveMod,
  cc: [ObjectId<ApubCommunity>; 1],
--- a/crates/apub/src/activities/voting/undo_vote.rs
+++ b/crates/apub/src/activities/voting/undo_vote.rs
@ -12,6 +12,7 @@ use crate::{
  },
  context::lemmy_context,
  fetcher::object_id::ObjectId,
+  migrations::PublicUrlMigration,
  objects::{community::ApubCommunity, person::ApubPerson},
  PostOrComment,
 };
@ -25,7 +26,6 @@ use lemmy_api_common::blocking;
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType},
-  values::PublicUrl,
  verify::verify_urls_match,
 };
 use lemmy_db_schema::{newtypes::CommunityId, source::community::Community, traits::Crud};
@ -39,7 +39,7 @@ use url::Url;
 #[serde(rename_all = "camelCase")]
 pub struct UndoVote {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  object: Vote,
  cc: [ObjectId<ApubCommunity>; 1],
  #[serde(rename = "type")]
@ -72,7 +72,7 @@ impl UndoVote {
    )?;
    let undo_vote = UndoVote {
      actor: ObjectId::new(actor.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object,
      cc: [ObjectId::new(community.actor_id())],
      kind: UndoType::Undo,
--- a/crates/apub/src/activities/voting/vote.rs
+++ b/crates/apub/src/activities/voting/vote.rs
@ -8,6 +8,7 @@ use crate::{
  },
  context::lemmy_context,
  fetcher::object_id::ObjectId,
+  migrations::PublicUrlMigration,
  objects::{community::ApubCommunity, person::ApubPerson},
  PostOrComment,
 };
@ -17,7 +18,6 @@ use lemmy_api_common::blocking;
 use lemmy_apub_lib::{
  data::Data,
  traits::{ActivityFields, ActivityHandler, ActorType},
-  values::PublicUrl,
 };
 use lemmy_db_schema::{newtypes::CommunityId, source::community::Community, traits::Crud};
 use lemmy_utils::LemmyError;
@ -58,7 +58,7 @@ impl From<&VoteType> for i16 {
 #[serde(rename_all = "camelCase")]
 pub struct Vote {
  actor: ObjectId<ApubPerson>,
-  to: [PublicUrl; 1],
+  to: PublicUrlMigration,
  pub(in crate::activities::voting) object: ObjectId<PostOrComment>,
  cc: [ObjectId<ApubCommunity>; 1],
  #[serde(rename = "type")]
@ -80,7 +80,7 @@ impl Vote {
  ) -> Result<Vote, LemmyError> {
    Ok(Vote {
      actor: ObjectId::new(actor.actor_id()),
-      to: [PublicUrl::Public],
+      to: PublicUrlMigration::create(),
      object: ObjectId::new(object.ap_id()),
      cc: [ObjectId::new(community.actor_id())],
      kind: kind.clone(),
--- a/crates/apub/src/fetcher/object_id.rs
+++ b/crates/apub/src/fetcher/object_id.rs
@ -22,6 +22,7 @@ use url::Url;
 static REQUEST_LIMIT: i32 = 25;

 #[derive(Clone, PartialEq, Serialize, Deserialize, Debug)]
+#[serde(transparent)]
 pub struct ObjectId<Kind>(Url, #[serde(skip)] PhantomData<Kind>)
 where
  Kind: FromApub<DataType = LemmyContext> + ApubObject<DataType = LemmyContext> + Send + 'static,
--- a/crates/apub/src/migrations.rs
+++ b/crates/apub/src/migrations.rs
@ -1,4 +1,5 @@
 use crate::fetcher::{object_id::ObjectId, post_or_comment::PostOrComment};
+use lemmy_apub_lib::values::PublicUrl;
 use serde::{Deserialize, Serialize};
 use url::Url;

@ -28,3 +29,21 @@ pub enum CommentInReplyToMigration {
 //
 // For v0.13, delete [`UndoRemovePostCommentOrCommunity`], and don't handle object deletion in
 // [`RemoveMod`] handler.
+
+/// Migrate value of field `to` from single value to vec.
+///
+/// v0.14: send as single value, accept both
+/// v0.15: send as vec, accept both
+/// v0.16: send and accept only vec
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(untagged)]
+pub enum PublicUrlMigration {
+  Old(PublicUrl),
+  New([PublicUrl; 1]),
+}
+
+impl PublicUrlMigration {
+  pub(crate) fn create() -> PublicUrlMigration {
+    PublicUrlMigration::Old(PublicUrl::Public)
+  }
+}
--- a/crates/apub/src/objects/community.rs
+++ b/crates/apub/src/objects/community.rs
@ -304,3 +304,26 @@ impl CommunityType for Community {
    Ok(inboxes)
  }
 }
+
+#[cfg(test)]
+mod tests {
+  use super::*;
+  use crate::objects::tests::{file_to_json_object, init_context};
+  use serial_test::serial;
+
+  #[actix_rt::test]
+  #[serial]
+  async fn test_fetch_lemmy_community() {
+    let json = file_to_json_object("assets/lemmy-community.json");
+    let url = Url::parse("https://lemmy.ml/c/meta").unwrap();
+    let community = ApubCommunity::from_apub(&json, &init_context(), &url, &mut 0)
+      .await
+      .unwrap();
+
+    assert_eq!(community.actor_id.clone().into_inner(), url);
+    assert_eq!(community.title, "lemmy.ml meta");
+    assert!(community.public_key.is_some());
+    assert!(!community.local);
+    assert_eq!(community.description.as_ref().unwrap().len(), 158);
+  }
+}
--- a/crates/apub/src/objects/mod.rs
+++ b/crates/apub/src/objects/mod.rs
@ -112,7 +112,7 @@ mod tests {
    }
    let chat_server = ChatServer::startup(
      pool.clone(),
-      rate_limiter.clone(),
+      rate_limiter,
      |_, _, _, _| Box::pin(x()),
      |_, _, _, _| Box::pin(x()),
      client.clone(),
--- a/crates/apub/src/objects/person.rs
+++ b/crates/apub/src/objects/person.rs
@ -285,7 +285,7 @@ mod tests {
    assert_eq!(person.actor_id.clone().into_inner(), url);
    assert_eq!(person.name, "nutomic");
    assert!(person.public_key.is_some());
-    assert_eq!(person.local, false);
+    assert!(!person.local);
    assert!(person.bio.is_some());
  }

@ -301,7 +301,7 @@ mod tests {
    assert_eq!(person.actor_id.clone().into_inner(), url);
    assert_eq!(person.name, "lanodan");
    assert!(person.public_key.is_some());
-    assert_eq!(person.local, false);
+    assert!(!person.local);
    // TODO: pleroma uses summary for user profile, while we use content
    //assert!(person.bio.is_some());
  }
--- a/crates/apub/src/objects/post.rs
+++ b/crates/apub/src/objects/post.rs
@ -54,7 +54,7 @@ pub struct Page {
  to: [Url; 2],
  name: String,
  content: Option<String>,
-  media_type: MediaTypeHtml,
+  media_type: Option<MediaTypeHtml>,
  source: Option<Source>,
  url: Option<Url>,
  image: Option<ImageObject>,
@ -189,7 +189,7 @@ impl ToApub for ApubPost {
      to: [community.actor_id.into(), public()],
      name: self.name.clone(),
      content: self.body.as_ref().map(|b| markdown_to_html(b)),
-      media_type: MediaTypeHtml::Html,
+      media_type: Some(MediaTypeHtml::Html),
      source,
      url: self.url.clone().map(|u| u.into()),
      image,
--- a/scripts/update_apub_test_files.sh
+++ b/scripts/update_apub_test_files.sh
@ -3,5 +3,7 @@ set -e

 curl -H "Accept: application/activity+json" https://lemmy.ml/u/nutomic | jq \
    > crates/apub/assets/lemmy-person.json
+curl -H "Accept: application/activity+json" https://lemmy.ml/c/meta | jq \
+    > crates/apub/assets/lemmy-community.json
 curl -H "Accept: application/activity+json" https://queer.hacktivis.me/users/lanodan | jq \
-    > crates/apub/assets/pleroma-person.json
+    > crates/apub/assets/pleroma-person.json