Implement private communities (#5076)

* add private visibility

* filter private communities in post_view.rs

* also filter in comment_view

* community follower state

* remove unused method

* sql fmt

* add CommunityFollower.approved_by

* implement api endpoints

* api changes

* only admins can create private community for now

* add local api tests

* fix api tests

* follow remote private community

* use authorized fetch for content in private community

* federate community visibility

* dont mark content in private community as public

* expose ApprovalRequired in api

* also check content fetchable for outbox/featured

* address private community content to followers

* implement reject activity

* fix tests

* add files

* remove local api tests

* dont use delay

* is_new_instance

* single query for is_new_instance

* return subscribed type for pending follow

* working

* need to catch errors in waitUntil

* clippy

* fix query

* lint for unused async

* diesel.toml comment

* add comment

* avoid db reads

* rename approved_by to approver_id

* add helper

* form init

* list pending follows should return items for all communities

* clippy

* ci

* fix down migration

* fix api tests

* references

* rename

* run git diff

* ci

* fix schema check

* fix joins

* ci

* ci

* skip_serializing_none

* fix test

---------

Co-authored-by: Dessalines <dessalines@users.noreply.github.com>

.woodpecker.yml

@@ -133,8 +133,8 @@ steps:
       DATABASE_URL: postgres://lemmy:password@database:5432/lemmy
     commands:
       - <<: *install_diesel_cli
+      - cp crates/db_schema/src/schema.rs tmp.schema
       - diesel migration run
-      - diesel print-schema --config-file=diesel.toml > tmp.schema
       - diff tmp.schema crates/db_schema/src/schema.rs
     when: *slow_check_paths
 

Cargo.toml

@@ -78,6 +78,7 @@ uninlined_format_args = "allow"
 unused_self = "deny"
 unwrap_used = "deny"
 unimplemented = "deny"
+unused_async = "deny"
 
 [workspace.dependencies]
 lemmy_api = { version = "=0.19.6-beta.7", path = "./crates/api" }

api_tests/package.json

@@ -10,12 +10,13 @@
   "scripts": {
     "lint": "tsc --noEmit && eslint --report-unused-disable-directives && prettier --check 'src/**/*.ts'",
     "fix": "prettier --write src && eslint --fix src",
-    "api-test": "jest -i follow.spec.ts && jest -i image.spec.ts && jest -i user.spec.ts && jest -i private_message.spec.ts && jest -i community.spec.ts &&  jest -i post.spec.ts && jest -i comment.spec.ts ",
+    "api-test": "jest -i follow.spec.ts && jest -i image.spec.ts && jest -i user.spec.ts && jest -i private_message.spec.ts && jest -i community.spec.ts && jest -i private_community.spec.ts && jest -i post.spec.ts && jest -i comment.spec.ts ",
     "api-test-follow": "jest -i follow.spec.ts",
     "api-test-comment": "jest -i comment.spec.ts",
     "api-test-post": "jest -i post.spec.ts",
     "api-test-user": "jest -i user.spec.ts",
     "api-test-community": "jest -i community.spec.ts",
+    "api-test-private-community": "jest -i private_community.spec.ts",
     "api-test-private-message": "jest -i private_message.spec.ts",
     "api-test-image": "jest -i image.spec.ts"
   },
@@ -27,7 +28,7 @@
     "eslint": "^9.9.0",
     "eslint-plugin-prettier": "^5.1.3",
     "jest": "^29.5.0",
-    "lemmy-js-client": "0.20.0-alpha.11",
+    "lemmy-js-client": "0.20.0-private-community.9",
     "prettier": "^3.2.5",
     "ts-jest": "^29.1.0",
     "typescript": "^5.5.4",

api_tests/pnpm-lock.yaml

@@ -30,8 +30,8 @@ importers:
         specifier: ^29.5.0
         version: 29.7.0(@types/node@22.8.6)
       lemmy-js-client:
-        specifier: 0.20.0-alpha.11
-        version: 0.20.0-alpha.11
+        specifier: 0.20.0-private-community.9
+        version: 0.20.0-private-community.9
       prettier:
         specifier: ^3.2.5
         version: 3.3.3
@@ -1159,8 +1159,8 @@ packages:
     resolution: {integrity: sha512-eTIzlVOSUR+JxdDFepEYcBMtZ9Qqdef+rnzWdRZuMbOywu5tO2w2N7rqjoANZ5k9vywhL6Br1VRjUIgTQx4E8w==}
     engines: {node: '>=6'}
 
-  lemmy-js-client@0.20.0-alpha.11:
-    resolution: {integrity: sha512-iRSG4xHMjPDIreQqVIoJ5JrMY71uk07G0Zbgyf068xKbib22J3+i1x/XgCTs6tiHlqTnw1Ig/KRq7p7qJoA4uw==}
+  lemmy-js-client@0.20.0-private-community.9:
+    resolution: {integrity: sha512-iuFezswCzIco5U5Q4Eo8HAWVE65pDW2zeO+fYLEyFl30SLw9a3gqJkip2vbDfVvoAjDXyUskZKddf1Nnj8mVcg==}
 
   leven@3.1.0:
     resolution: {integrity: sha512-qsda+H8jTaUaN/x5vzW2rzc+8Rw4TAQ/4KjB46IwK5VH+IlVeeeje/EoZRpiXvIqjFgK84QffqPztGI3VBLG1A==}
@@ -3061,7 +3061,7 @@ snapshots:
 
   kleur@3.0.3: {}
 
-  lemmy-js-client@0.20.0-alpha.11: {}
+  lemmy-js-client@0.20.0-private-community.9: {}
 
   leven@3.1.0: {}
 

api_tests/src/private_community.spec.ts

@@ -0,0 +1,214 @@
+jest.setTimeout(120000);
+
+import { FollowCommunity } from "lemmy-js-client";
+import {
+  alpha,
+  setupLogins,
+  createCommunity,
+  unfollows,
+  registerUser,
+  listCommunityPendingFollows,
+  getCommunity,
+  getCommunityPendingFollowsCount,
+  approveCommunityPendingFollow,
+  randomString,
+  createPost,
+  createComment,
+  beta,
+  resolveCommunity,
+  betaUrl,
+  resolvePost,
+  resolveComment,
+  likeComment,
+  waitUntil,
+} from "./shared";
+
+beforeAll(setupLogins);
+afterAll(unfollows);
+
+test("Follow a private community", async () => {
+  // create private community
+  const community = await createCommunity(alpha, randomString(10), "Private");
+  expect(community.community_view.community.visibility).toBe("Private");
+  const alphaCommunityId = community.community_view.community.id;
+
+  // No pending follows yet
+  const pendingFollows0 = await listCommunityPendingFollows(alpha);
+  expect(pendingFollows0.items.length).toBe(0);
+  const pendingFollowsCount0 = await getCommunityPendingFollowsCount(
+    alpha,
+    alphaCommunityId,
+  );
+  expect(pendingFollowsCount0.count).toBe(0);
+
+  // follow as new user
+  const user = await registerUser(beta, betaUrl);
+  const betaCommunity = (
+    await resolveCommunity(user, community.community_view.community.actor_id)
+  ).community;
+  expect(betaCommunity).toBeDefined();
+  const betaCommunityId = betaCommunity!.community.id;
+  const follow_form: FollowCommunity = {
+    community_id: betaCommunityId,
+    follow: true,
+  };
+  await user.followCommunity(follow_form);
+
+  // Follow listed as pending
+  const follow1 = await getCommunity(user, betaCommunityId);
+  expect(follow1.community_view.subscribed).toBe("ApprovalRequired");
+
+  // Wait for follow to federate, shown as pending
+  let pendingFollows1 = await waitUntil(
+    () => listCommunityPendingFollows(alpha),
+    f => f.items.length == 1,
+  );
+  expect(pendingFollows1.items[0].is_new_instance).toBe(true);
+  const pendingFollowsCount1 = await getCommunityPendingFollowsCount(
+    alpha,
+    alphaCommunityId,
+  );
+  expect(pendingFollowsCount1.count).toBe(1);
+
+  // user still sees approval required at this point
+  const betaCommunity2 = await getCommunity(user, betaCommunityId);
+  expect(betaCommunity2.community_view.subscribed).toBe("ApprovalRequired");
+
+  // Approve the follow
+  const approve = await approveCommunityPendingFollow(
+    alpha,
+    alphaCommunityId,
+    pendingFollows1.items[0].person.id,
+  );
+  expect(approve.success).toBe(true);
+
+  // Follow is confirmed
+  await waitUntil(
+    () => getCommunity(user, betaCommunityId),
+    c => c.community_view.subscribed == "Subscribed",
+  );
+  const pendingFollows2 = await listCommunityPendingFollows(alpha);
+  expect(pendingFollows2.items.length).toBe(0);
+  const pendingFollowsCount2 = await getCommunityPendingFollowsCount(
+    alpha,
+    alphaCommunityId,
+  );
+  expect(pendingFollowsCount2.count).toBe(0);
+
+  // follow with another user from that instance, is_new_instance should be false now
+  const user2 = await registerUser(beta, betaUrl);
+  await user2.followCommunity(follow_form);
+  let pendingFollows3 = await waitUntil(
+    () => listCommunityPendingFollows(alpha),
+    f => f.items.length == 1,
+  );
+  expect(pendingFollows3.items[0].is_new_instance).toBe(false);
+
+  // cleanup pending follow
+  const approve2 = await approveCommunityPendingFollow(
+    alpha,
+    alphaCommunityId,
+    pendingFollows3.items[0].person.id,
+  );
+  expect(approve2.success).toBe(true);
+});
+
+test("Only followers can view and interact with private community content", async () => {
+  // create private community
+  const community = await createCommunity(alpha, randomString(10), "Private");
+  expect(community.community_view.community.visibility).toBe("Private");
+  const alphaCommunityId = community.community_view.community.id;
+
+  // create post and comment
+  const post0 = await createPost(alpha, alphaCommunityId);
+  const post_id = post0.post_view.post.id;
+  expect(post_id).toBeDefined();
+  const comment = await createComment(alpha, post_id);
+  const comment_id = comment.comment_view.comment.id;
+  expect(comment_id).toBeDefined();
+
+  // user is not following the community and cannot view nor create posts
+  const user = await registerUser(beta, betaUrl);
+  const betaCommunity = (
+    await resolveCommunity(user, community.community_view.community.actor_id)
+  ).community!.community;
+  await expect(resolvePost(user, post0.post_view.post)).rejects.toStrictEqual(
+    Error("not_found"),
+  );
+  await expect(
+    resolveComment(user, comment.comment_view.comment),
+  ).rejects.toStrictEqual(Error("not_found"));
+  await expect(createPost(user, betaCommunity.id)).rejects.toStrictEqual(
+    Error("not_found"),
+  );
+
+  // follow the community and approve
+  const follow_form: FollowCommunity = {
+    community_id: betaCommunity.id,
+    follow: true,
+  };
+  await user.followCommunity(follow_form);
+  const pendingFollows1 = await waitUntil(
+    () => listCommunityPendingFollows(alpha),
+    f => f.items.length == 1,
+  );
+  const approve = await approveCommunityPendingFollow(
+    alpha,
+    alphaCommunityId,
+    pendingFollows1.items[0].person.id,
+  );
+  expect(approve.success).toBe(true);
+
+  // now user can fetch posts and comments in community (using signed fetch), and create posts
+  await waitUntil(
+    () => resolvePost(user, post0.post_view.post),
+    p => p?.post?.post.id != undefined,
+  );
+  const resolvedComment = (
+    await resolveComment(user, comment.comment_view.comment)
+  ).comment;
+  expect(resolvedComment?.comment.id).toBeDefined();
+
+  const post1 = await createPost(user, betaCommunity.id);
+  expect(post1.post_view).toBeDefined();
+  const like = await likeComment(user, 1, resolvedComment!.comment);
+  expect(like.comment_view.my_vote).toBe(1);
+});
+
+test("Reject follower", async () => {
+  // create private community
+  const community = await createCommunity(alpha, randomString(10), "Private");
+  expect(community.community_view.community.visibility).toBe("Private");
+  const alphaCommunityId = community.community_view.community.id;
+
+  // user is not following the community and cannot view nor create posts
+  const user = await registerUser(beta, betaUrl);
+  const betaCommunity1 = (
+    await resolveCommunity(user, community.community_view.community.actor_id)
+  ).community!.community;
+
+  // follow the community and reject
+  const follow_form: FollowCommunity = {
+    community_id: betaCommunity1.id,
+    follow: true,
+  };
+  const follow = await user.followCommunity(follow_form);
+  expect(follow.community_view.subscribed).toBe("ApprovalRequired");
+
+  const pendingFollows1 = await waitUntil(
+    () => listCommunityPendingFollows(alpha),
+    f => f.items.length == 1,
+  );
+  const approve = await approveCommunityPendingFollow(
+    alpha,
+    alphaCommunityId,
+    pendingFollows1.items[0].person.id,
+    false,
+  );
+  expect(approve.success).toBe(true);
+
+  await waitUntil(
+    () => getCommunity(user, betaCommunity1.id),
+    c => c.community_view.subscribed == "NotSubscribed",
+  );
+});

api_tests/src/shared.ts

@@ -1,17 +1,24 @@
 import {
+  ApproveCommunityPendingFollower,
   BlockCommunity,
   BlockCommunityResponse,
   BlockInstance,
   BlockInstanceResponse,
   CommunityId,
+  CommunityVisibility,
   CreatePrivateMessageReport,
   DeleteImage,
   EditCommunity,
+  GetCommunityPendingFollowsCount,
+  GetCommunityPendingFollowsCountResponse,
   GetReplies,
   GetRepliesResponse,
   GetUnreadCountResponse,
   InstanceId,
   LemmyHttp,
+  ListCommunityPendingFollows,
+  ListCommunityPendingFollowsResponse,
+  PersonId,
   PostView,
   PrivateMessageReportResponse,
   SuccessResponse,
@@ -198,7 +205,7 @@ export async function setupLogins() {
     // only needed the first time so do in this try
     await delay(10_000);
   } catch {
-    console.log("Communities already exist");
+    //console.log("Communities already exist");
   }
 }
 
@@ -554,12 +561,14 @@ export async function likeComment(
 export async function createCommunity(
   api: LemmyHttp,
   name_: string = randomString(10),
+  visibility: CommunityVisibility = "Public",
 ): Promise<CommunityResponse> {
   let description = "a sample description";
   let form: CreateCommunity = {
     name: name_,
     title: name_,
     description,
+    visibility,
   };
   return api.createCommunity(form);
 }
@@ -688,7 +697,6 @@ export async function saveUserSettingsBio(
   let form: SaveUserSettings = {
     show_nsfw: true,
     blur_nsfw: false,
-    auto_expand: true,
     theme: "darkly",
     default_post_sort_type: "Active",
     default_listing_type: "All",
@@ -709,7 +717,6 @@ export async function saveUserSettingsFederated(
   let form: SaveUserSettings = {
     show_nsfw: false,
     blur_nsfw: true,
-    auto_expand: false,
     default_post_sort_type: "Hot",
     default_listing_type: "All",
     interface_language: "",
@@ -872,6 +879,39 @@ export function blockCommunity(
   return api.blockCommunity(form);
 }
 
+export function listCommunityPendingFollows(
+  api: LemmyHttp,
+): Promise<ListCommunityPendingFollowsResponse> {
+  let form: ListCommunityPendingFollows = {
+    pending_only: true,
+    all_communities: false,
+    page: 1,
+    limit: 50,
+  };
+  return api.listCommunityPendingFollows(form);
+}
+
+export function getCommunityPendingFollowsCount(
+  api: LemmyHttp,
+  community_id: CommunityId,
+): Promise<GetCommunityPendingFollowsCountResponse> {
+  return api.getCommunityPendingFollowsCount(community_id);
+}
+
+export function approveCommunityPendingFollow(
+  api: LemmyHttp,
+  community_id: CommunityId,
+  follower_id: PersonId,
+  approve: boolean = true,
+): Promise<SuccessResponse> {
+  let form: ApproveCommunityPendingFollower = {
+    community_id,
+    follower_id,
+    approve,
+  };
+  return api.approveCommunityPendingFollow(form);
+}
+
 export function delay(millis = 500) {
   return new Promise(resolve => setTimeout(resolve, millis));
 }
@@ -962,8 +1002,12 @@ export async function waitUntil<T>(
   let retry = 0;
   let result;
   while (retry++ < retries) {
-    result = await fetcher();
-    if (checker(result)) return result;
+    try {
+      result = await fetcher();
+      if (checker(result)) return result;
+    } catch (error) {
+      //console.error(error);
+    }
     await delay(
       delaySeconds[Math.min(retry - 1, delaySeconds.length - 1)] * 1000,
     );

crates/api/src/comment/distinguish.rs

@@ -26,7 +26,7 @@ pub async fn distinguish_comment(
 
   check_community_user_action(
     &local_user_view.person,
-    orig_comment.community.id,
+    &orig_comment.community,
     &mut context.pool(),
   )
   .await?;
@@ -39,7 +39,7 @@ pub async fn distinguish_comment(
   // Verify that only a mod or admin can distinguish a comment
   check_community_mod_action(
     &local_user_view.person,
-    orig_comment.community.id,
+    &orig_comment.community,
     false,
     &mut context.pool(),
   )

crates/api/src/comment/like.rs

@@ -50,7 +50,7 @@ pub async fn like_comment(
 
   check_community_user_action(
     &local_user_view.person,
-    orig_comment.community.id,
+    &orig_comment.community,
     &mut context.pool(),
   )
   .await?;
@@ -92,8 +92,7 @@ pub async fn like_comment(
       score: data.score,
     },
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(
     build_comment_response(

crates/api/src/comment_report/create.rs

@@ -44,7 +44,7 @@ pub async fn create_comment_report(
 
   check_community_user_action(
     &local_user_view.person,
-    comment_view.community.id,
+    &comment_view.community,
     &mut context.pool(),
   )
   .await?;
@@ -85,8 +85,7 @@ pub async fn create_comment_report(
       reason: data.reason.clone(),
     },
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(CommentReportResponse {
     comment_report_view,

crates/api/src/comment_report/resolve.rs

@@ -22,7 +22,7 @@ pub async fn resolve_comment_report(
   let person_id = local_user_view.person.id;
   check_community_mod_action(
     &local_user_view.person,
-    report.community.id,
+    &report.community,
     true,
     &mut context.pool(),
   )

crates/api/src/community/add_mod.rs

@@ -24,12 +24,11 @@ pub async fn add_mod_to_community(
   context: Data<LemmyContext>,
   local_user_view: LocalUserView,
 ) -> LemmyResult<Json<AddModToCommunityResponse>> {
-  let community_id = data.community_id;
-
+  let community = Community::read(&mut context.pool(), data.community_id).await?;
   // Verify that only mods or admins can add mod
   check_community_mod_action(
     &local_user_view.person,
-    community_id,
+    &community,
     false,
     &mut context.pool(),
   )
@@ -39,15 +38,13 @@ pub async fn add_mod_to_community(
   if !data.added {
     LocalUser::is_higher_mod_or_admin_check(
       &mut context.pool(),
-      community_id,
+      community.id,
       local_user_view.person.id,
       vec![data.person_id],
     )
     .await?;
   }
 
-  let community = Community::read(&mut context.pool(), community_id).await?;
-
   // If user is admin and community is remote, explicitly check that he is a
   // moderator. This is necessary because otherwise the action would be rejected
   // by the community's home instance.
@@ -98,8 +95,7 @@ pub async fn add_mod_to_community(
       added: data.added,
     },
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(AddModToCommunityResponse { moderators }))
 }

crates/api/src/community/ban.rs

@@ -13,6 +13,7 @@ use lemmy_api_common::{
 use lemmy_db_schema::{
   source::{
     community::{
+      Community,
       CommunityFollower,
       CommunityFollowerForm,
       CommunityPersonBan,
@@ -38,11 +39,12 @@ pub async fn ban_from_community(
 ) -> LemmyResult<Json<BanFromCommunityResponse>> {
   let banned_person_id = data.person_id;
   let expires = check_expire_time(data.expires)?;
+  let community = Community::read(&mut context.pool(), data.community_id).await?;
 
   // Verify that only mods or admins can ban
   check_community_mod_action(
     &local_user_view.person,
-    data.community_id,
+    &community,
     false,
     &mut context.pool(),
   )
@@ -72,12 +74,7 @@ pub async fn ban_from_community(
       .with_lemmy_type(LemmyErrorType::CommunityUserAlreadyBanned)?;
 
     // Also unsubscribe them from the community, if they are subscribed
-    let community_follower_form = CommunityFollowerForm {
-      community_id: data.community_id,
-      person_id: banned_person_id,
-      pending: false,
-    };
-
+    let community_follower_form = CommunityFollowerForm::new(data.community_id, banned_person_id);
     CommunityFollower::unfollow(&mut context.pool(), &community_follower_form)
       .await
       .ok();
@@ -123,8 +120,7 @@ pub async fn ban_from_community(
       data: data.0.clone(),
     },
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(BanFromCommunityResponse {
     person_view,

crates/api/src/community/block.rs

@@ -35,12 +35,7 @@ pub async fn block_community(
       .with_lemmy_type(LemmyErrorType::CommunityBlockAlreadyExists)?;
 
     // Also, unfollow the community, and send a federated unfollow
-    let community_follower_form = CommunityFollowerForm {
-      community_id: data.community_id,
-      person_id,
-      pending: false,
-    };
-
+    let community_follower_form = CommunityFollowerForm::new(data.community_id, person_id);
     CommunityFollower::unfollow(&mut context.pool(), &community_follower_form)
       .await
       .ok();
@@ -65,8 +60,7 @@ pub async fn block_community(
       false,
     ),
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(BlockCommunityResponse {
     blocked: data.block,

crates/api/src/community/follow.rs

@@ -4,17 +4,18 @@ use lemmy_api_common::{
   community::{CommunityResponse, FollowCommunity},
   context::LemmyContext,
   send_activity::{ActivityChannel, SendActivityData},
-  utils::check_community_user_action,
+  utils::{check_community_deleted_removed, check_user_valid},
 };
 use lemmy_db_schema::{
   source::{
     actor_language::CommunityLanguage,
-    community::{Community, CommunityFollower, CommunityFollowerForm},
+    community::{Community, CommunityFollower, CommunityFollowerForm, CommunityFollowerState},
   },
   traits::{Crud, Followable},
+  CommunityVisibility,
 };
 use lemmy_db_views::structs::LocalUserView;
-use lemmy_db_views_actor::structs::CommunityView;
+use lemmy_db_views_actor::structs::{CommunityPersonBanView, CommunityView};
 use lemmy_utils::error::{LemmyErrorExt, LemmyErrorType, LemmyResult};
 
 #[tracing::instrument(skip(context))]
@@ -23,40 +24,52 @@ pub async fn follow_community(
   context: Data<LemmyContext>,
   local_user_view: LocalUserView,
 ) -> LemmyResult<Json<CommunityResponse>> {
+  check_user_valid(&local_user_view.person)?;
   let community = Community::read(&mut context.pool(), data.community_id).await?;
-  let mut community_follower_form = CommunityFollowerForm {
-    community_id: community.id,
-    person_id: local_user_view.person.id,
-    pending: false,
-  };
+  let form = CommunityFollowerForm::new(community.id, local_user_view.person.id);
 
   if data.follow {
+    // Only run these checks for local community, in case of remote community the local
+    // state may be outdated. Can't use check_community_user_action() here as it only allows
+    // actions from existing followers for private community (so following would be impossible).
     if community.local {
-      check_community_user_action(&local_user_view.person, community.id, &mut context.pool())
+      check_community_deleted_removed(&community)?;
+      CommunityPersonBanView::check(&mut context.pool(), local_user_view.person.id, community.id)
         .await?;
-
-      CommunityFollower::follow(&mut context.pool(), &community_follower_form)
-        .await
-        .with_lemmy_type(LemmyErrorType::CommunityFollowerAlreadyExists)?;
-    } else {
-      // Mark as pending, the actual federation activity is sent via `SendActivity` handler
-      community_follower_form.pending = true;
-      CommunityFollower::follow(&mut context.pool(), &community_follower_form)
-        .await
-        .with_lemmy_type(LemmyErrorType::CommunityFollowerAlreadyExists)?;
     }
+
+    let state = if community.local {
+      // Local follow is accepted immediately
+      Some(CommunityFollowerState::Accepted)
+    } else if community.visibility == CommunityVisibility::Private {
+      // Private communities require manual approval
+      Some(CommunityFollowerState::ApprovalRequired)
+    } else {
+      // remote follow needs to be federated first
+      Some(CommunityFollowerState::Pending)
+    };
+
+    let form = CommunityFollowerForm {
+      state,
+      ..CommunityFollowerForm::new(community.id, local_user_view.person.id)
+    };
+
+    // Write to db
+    CommunityFollower::follow(&mut context.pool(), &form)
+      .await
+      .with_lemmy_type(LemmyErrorType::CommunityFollowerAlreadyExists)?;
   } else {
-    CommunityFollower::unfollow(&mut context.pool(), &community_follower_form)
+    CommunityFollower::unfollow(&mut context.pool(), &form)
       .await
       .with_lemmy_type(LemmyErrorType::CommunityFollowerAlreadyExists)?;
   }
 
+  // Send the federated follow
   if !community.local {
     ActivityChannel::submit_activity(
       SendActivityData::FollowCommunity(community, local_user_view.person.clone(), data.follow),
       &context,
-    )
-    .await?;
+    )?;
   }
 
   let community_id = data.community_id;

crates/api/src/community/hide.rs

@@ -48,8 +48,7 @@ pub async fn hide_community(
   ActivityChannel::submit_activity(
     SendActivityData::UpdateCommunity(local_user_view.person.clone(), community),
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(SuccessResponse::default()))
 }

crates/api/src/community/mod.rs

@@ -3,5 +3,6 @@ pub mod ban;
 pub mod block;
 pub mod follow;
 pub mod hide;
+pub mod pending_follows;
 pub mod random;
 pub mod transfer;

crates/api/src/community/pending_follows/approve.rs

@@ -0,0 +1,46 @@
+use activitypub_federation::config::Data;
+use actix_web::web::Json;
+use lemmy_api_common::{
+  community::ApproveCommunityPendingFollower,
+  context::LemmyContext,
+  send_activity::{ActivityChannel, SendActivityData},
+  utils::is_mod_or_admin,
+  SuccessResponse,
+};
+use lemmy_db_schema::{
+  source::community::{CommunityFollower, CommunityFollowerForm},
+  traits::Followable,
+};
+use lemmy_db_views::structs::LocalUserView;
+use lemmy_utils::error::LemmyResult;
+
+pub async fn post_pending_follows_approve(
+  data: Json<ApproveCommunityPendingFollower>,
+  context: Data<LemmyContext>,
+  local_user_view: LocalUserView,
+) -> LemmyResult<Json<SuccessResponse>> {
+  is_mod_or_admin(
+    &mut context.pool(),
+    &local_user_view.person,
+    data.community_id,
+  )
+  .await?;
+
+  let activity_data = if data.approve {
+    CommunityFollower::approve(
+      &mut context.pool(),
+      data.community_id,
+      data.follower_id,
+      local_user_view.person.id,
+    )
+    .await?;
+    SendActivityData::AcceptFollower(data.community_id, data.follower_id)
+  } else {
+    let form = CommunityFollowerForm::new(data.community_id, data.follower_id);
+    CommunityFollower::unfollow(&mut context.pool(), &form).await?;
+    SendActivityData::RejectFollower(data.community_id, data.follower_id)
+  };
+  ActivityChannel::submit_activity(activity_data, &context)?;
+
+  Ok(Json(SuccessResponse::default()))
+}

crates/api/src/community/pending_follows/count.rs

@@ -0,0 +1,25 @@
+use actix_web::web::{Data, Json, Query};
+use lemmy_api_common::{
+  community::{GetCommunityPendingFollowsCount, GetCommunityPendingFollowsCountResponse},
+  context::LemmyContext,
+  utils::is_mod_or_admin,
+};
+use lemmy_db_views::structs::LocalUserView;
+use lemmy_db_views_actor::structs::CommunityFollowerView;
+use lemmy_utils::error::LemmyResult;
+
+pub async fn get_pending_follows_count(
+  data: Query<GetCommunityPendingFollowsCount>,
+  context: Data<LemmyContext>,
+  local_user_view: LocalUserView,
+) -> LemmyResult<Json<GetCommunityPendingFollowsCountResponse>> {
+  is_mod_or_admin(
+    &mut context.pool(),
+    &local_user_view.person,
+    data.community_id,
+  )
+  .await?;
+  let count =
+    CommunityFollowerView::count_approval_required(&mut context.pool(), data.community_id).await?;
+  Ok(Json(GetCommunityPendingFollowsCountResponse { count }))
+}

crates/api/src/community/pending_follows/list.rs

@@ -0,0 +1,29 @@
+use actix_web::web::{Data, Json, Query};
+use lemmy_api_common::{
+  community::{ListCommunityPendingFollows, ListCommunityPendingFollowsResponse},
+  context::LemmyContext,
+  utils::check_community_mod_of_any_or_admin_action,
+};
+use lemmy_db_views::structs::LocalUserView;
+use lemmy_db_views_actor::structs::CommunityFollowerView;
+use lemmy_utils::error::LemmyResult;
+
+pub async fn get_pending_follows_list(
+  data: Query<ListCommunityPendingFollows>,
+  context: Data<LemmyContext>,
+  local_user_view: LocalUserView,
+) -> LemmyResult<Json<ListCommunityPendingFollowsResponse>> {
+  check_community_mod_of_any_or_admin_action(&local_user_view, &mut context.pool()).await?;
+  let all_communities =
+    data.all_communities.unwrap_or_default() && local_user_view.local_user.admin;
+  let items = CommunityFollowerView::list_approval_required(
+    &mut context.pool(),
+    local_user_view.person.id,
+    all_communities,
+    data.pending_only.unwrap_or_default(),
+    data.page,
+    data.limit,
+  )
+  .await?;
+  Ok(Json(ListCommunityPendingFollowsResponse { items }))
+}

crates/api/src/community/pending_follows/mod.rs

@@ -0,0 +1,3 @@
+pub mod approve;
+pub mod count;
+pub mod list;

crates/api/src/community/transfer.rs

@@ -7,7 +7,7 @@ use lemmy_api_common::{
 };
 use lemmy_db_schema::{
   source::{
-    community::{CommunityModerator, CommunityModeratorForm},
+    community::{Community, CommunityModerator, CommunityModeratorForm},
     moderator::{ModTransferCommunity, ModTransferCommunityForm},
   },
   traits::{Crud, Joinable},
@@ -27,11 +27,11 @@ pub async fn transfer_community(
   context: Data<LemmyContext>,
   local_user_view: LocalUserView,
 ) -> LemmyResult<Json<GetCommunityResponse>> {
-  let community_id = data.community_id;
+  let community = Community::read(&mut context.pool(), data.community_id).await?;
   let mut community_mods =
-    CommunityModeratorView::for_community(&mut context.pool(), community_id).await?;
+    CommunityModeratorView::for_community(&mut context.pool(), community.id).await?;
 
-  check_community_user_action(&local_user_view.person, community_id, &mut context.pool()).await?;
+  check_community_user_action(&local_user_view.person, &community, &mut context.pool()).await?;
 
   // Make sure transferrer is either the top community mod, or an admin
   if !(is_top_mod(&local_user_view, &community_mods).is_ok() || is_admin(&local_user_view).is_ok())

crates/api/src/lib.rs

@@ -197,11 +197,7 @@ pub(crate) async fn ban_nonlocal_user_from_local_communities(
           .ok();
 
         // Also unsubscribe them from the community, if they are subscribed
-        let community_follower_form = CommunityFollowerForm {
-          community_id,
-          person_id: target.id,
-          pending: false,
-        };
+        let community_follower_form = CommunityFollowerForm::new(community_id, target.id);
 
         CommunityFollower::unfollow(&mut context.pool(), &community_follower_form)
           .await
@@ -242,8 +238,7 @@ pub(crate) async fn ban_nonlocal_user_from_local_communities(
           data: ban_from_community,
         },
         context,
-      )
-      .await?;
+      )?;
     }
   }
 

crates/api/src/local_user/ban_person.rs

@@ -111,8 +111,7 @@ pub async fn ban_from_site(
       expires: data.expires,
     },
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(BanPersonResponse {
     person_view,

crates/api/src/post/feature.rs

@@ -9,6 +9,7 @@ use lemmy_api_common::{
 };
 use lemmy_db_schema::{
   source::{
+    community::Community,
     moderator::{ModFeaturePost, ModFeaturePostForm},
     post::{Post, PostUpdateForm},
   },
@@ -27,9 +28,10 @@ pub async fn feature_post(
   let post_id = data.post_id;
   let orig_post = Post::read(&mut context.pool(), post_id).await?;
 
+  let community = Community::read(&mut context.pool(), orig_post.community_id).await?;
   check_community_mod_action(
     &local_user_view.person,
-    orig_post.community_id,
+    &community,
     false,
     &mut context.pool(),
   )
@@ -67,8 +69,7 @@ pub async fn feature_post(
   ActivityChannel::submit_activity(
     SendActivityData::FeaturePost(post, local_user_view.person.clone(), data.featured),
     &context,
-  )
-  .await?;
+  )?;
 
   build_post_response(&context, orig_post.community_id, local_user_view, post_id).await
 }

crates/api/src/post/like.rs

@@ -15,13 +15,12 @@ use lemmy_api_common::{
 };
 use lemmy_db_schema::{
   source::{
-    community::Community,
     local_site::LocalSite,
-    post::{Post, PostLike, PostLikeForm},
+    post::{PostLike, PostLikeForm},
   },
-  traits::{Crud, Likeable},
+  traits::Likeable,
 };
-use lemmy_db_views::structs::LocalUserView;
+use lemmy_db_views::structs::{LocalUserView, PostView};
 use lemmy_utils::error::{LemmyErrorExt, LemmyErrorType, LemmyResult};
 use std::ops::Deref;
 
@@ -45,11 +44,11 @@ pub async fn like_post(
   check_bot_account(&local_user_view.person)?;
 
   // Check for a community ban
-  let post = Post::read(&mut context.pool(), post_id).await?;
+  let post = PostView::read(&mut context.pool(), post_id, None, false).await?;
 
   check_community_user_action(
     &local_user_view.person,
-    post.community_id,
+    &post.community,
     &mut context.pool(),
   )
   .await?;
@@ -75,18 +74,15 @@ pub async fn like_post(
 
   mark_post_as_read(person_id, post_id, &mut context.pool()).await?;
 
-  let community = Community::read(&mut context.pool(), post.community_id).await?;
-
   ActivityChannel::submit_activity(
     SendActivityData::LikePostOrComment {
-      object_id: post.ap_id,
+      object_id: post.post.ap_id,
       actor: local_user_view.person.clone(),
-      community,
+      community: post.community.clone(),
       score: data.score,
     },
     &context,
-  )
-  .await?;
+  )?;
 
-  build_post_response(context.deref(), post.community_id, local_user_view, post_id).await
+  build_post_response(context.deref(), post.community.id, local_user_view, post_id).await
 }

crates/api/src/post/lock.rs

@@ -14,7 +14,7 @@ use lemmy_db_schema::{
   },
   traits::Crud,
 };
-use lemmy_db_views::structs::LocalUserView;
+use lemmy_db_views::structs::{LocalUserView, PostView};
 use lemmy_utils::error::LemmyResult;
 
 #[tracing::instrument(skip(context))]
@@ -24,11 +24,11 @@ pub async fn lock_post(
   local_user_view: LocalUserView,
 ) -> LemmyResult<Json<PostResponse>> {
   let post_id = data.post_id;
-  let orig_post = Post::read(&mut context.pool(), post_id).await?;
+  let orig_post = PostView::read(&mut context.pool(), post_id, None, false).await?;
 
   check_community_mod_action(
     &local_user_view.person,
-    orig_post.community_id,
+    &orig_post.community,
     false,
     &mut context.pool(),
   )
@@ -58,8 +58,7 @@ pub async fn lock_post(
   ActivityChannel::submit_activity(
     SendActivityData::LockPost(post, local_user_view.person.clone(), data.locked),
     &context,
-  )
-  .await?;
+  )?;
 
-  build_post_response(&context, orig_post.community_id, local_user_view, post_id).await
+  build_post_response(&context, orig_post.community.id, local_user_view, post_id).await
 }

crates/api/src/post_report/create.rs

@@ -39,7 +39,7 @@ pub async fn create_post_report(
 
   check_community_user_action(
     &local_user_view.person,
-    post_view.community.id,
+    &post_view.community,
     &mut context.pool(),
   )
   .await?;
@@ -80,8 +80,7 @@ pub async fn create_post_report(
       reason: data.reason.clone(),
     },
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(PostReportResponse { post_report_view }))
 }

crates/api/src/post_report/resolve.rs

@@ -22,7 +22,7 @@ pub async fn resolve_post_report(
   let person_id = local_user_view.person.id;
   check_community_mod_action(
     &local_user_view.person,
-    report.community.id,
+    &report.community,
     true,
     &mut context.pool(),
   )

crates/api/src/site/purge/comment.rs

@@ -67,8 +67,7 @@ pub async fn purge_comment(
       reason: data.reason.clone(),
     },
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(SuccessResponse::default()))
 }

crates/api/src/site/purge/community.rs

@@ -75,8 +75,7 @@ pub async fn purge_community(
       removed: true,
     },
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(SuccessResponse::default()))
 }

crates/api/src/site/purge/person.rs

@@ -80,8 +80,7 @@ pub async fn purge_person(
       expires: None,
     },
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(SuccessResponse::default()))
 }

crates/api/src/site/purge/post.rs

@@ -66,8 +66,7 @@ pub async fn purge_post(
       removed: true,
     },
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(SuccessResponse::default()))
 }

crates/api/src/sitemap.rs

@@ -9,9 +9,7 @@ use lemmy_utils::error::LemmyResult;
 use sitemap_rs::{url::Url, url_set::UrlSet};
 use tracing::info;
 
-async fn generate_urlset(
-  posts: Vec<(DbUrl, chrono::DateTime<chrono::Utc>)>,
-) -> LemmyResult<UrlSet> {
+fn generate_urlset(posts: Vec<(DbUrl, chrono::DateTime<chrono::Utc>)>) -> LemmyResult<UrlSet> {
   let urls = posts
     .into_iter()
     .map_while(|(url, date_time)| {
@@ -31,7 +29,7 @@ pub async fn get_sitemap(context: Data<LemmyContext>) -> LemmyResult<HttpRespons
   info!("Loaded latest {} posts", posts.len());
 
   let mut buf = Vec::<u8>::new();
-  generate_urlset(posts).await?.write(&mut buf)?;
+  generate_urlset(posts)?.write(&mut buf)?;
 
   Ok(
     HttpResponse::Ok()
@@ -74,7 +72,7 @@ pub(crate) mod tests {
     ];
 
     let mut buf = Vec::<u8>::new();
-    generate_urlset(posts).await?.write(&mut buf)?;
+    generate_urlset(posts)?.write(&mut buf)?;
     let root = Element::from_reader(buf.as_slice())?;
 
     assert_eq!(root.tag().name(), "urlset");

crates/api_common/src/claims.rs

@@ -92,7 +92,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_should_not_validate_user_token_after_password_change() -> LemmyResult<()> {
-    let pool_ = build_db_pool_for_tests().await;
+    let pool_ = build_db_pool_for_tests();
     let pool = &mut (&pool_).into();
     let secret = Secret::init(pool).await?;
     let context = LemmyContext::create(

crates/api_common/src/community.rs

@@ -8,6 +8,7 @@ use lemmy_db_views_actor::structs::{
   CommunityModeratorView,
   CommunitySortType,
   CommunityView,
+  PendingFollow,
   PersonView,
 };
 use serde::{Deserialize, Serialize};
@@ -274,3 +275,50 @@ pub struct GetRandomCommunity {
   #[cfg_attr(feature = "full", ts(optional))]
   pub type_: Option<ListingType>,
 }
+
+#[skip_serializing_none]
+#[derive(Debug, Serialize, Deserialize, Clone)]
+#[cfg_attr(feature = "full", derive(TS))]
+#[cfg_attr(feature = "full", ts(export))]
+pub struct ListCommunityPendingFollows {
+  /// Only shows the unapproved applications
+  #[cfg_attr(feature = "full", ts(optional))]
+  pub pending_only: Option<bool>,
+  // Only for admins, show pending follows for communities which you dont moderate
+  #[cfg_attr(feature = "full", ts(optional))]
+  pub all_communities: Option<bool>,
+  #[cfg_attr(feature = "full", ts(optional))]
+  pub page: Option<i64>,
+  #[cfg_attr(feature = "full", ts(optional))]
+  pub limit: Option<i64>,
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+#[cfg_attr(feature = "full", derive(TS))]
+#[cfg_attr(feature = "full", ts(export))]
+pub struct GetCommunityPendingFollowsCount {
+  pub community_id: CommunityId,
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+#[cfg_attr(feature = "full", derive(TS))]
+#[cfg_attr(feature = "full", ts(export))]
+pub struct GetCommunityPendingFollowsCountResponse {
+  pub count: i64,
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+#[cfg_attr(feature = "full", derive(TS))]
+#[cfg_attr(feature = "full", ts(export))]
+pub struct ListCommunityPendingFollowsResponse {
+  pub items: Vec<PendingFollow>,
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+#[cfg_attr(feature = "full", derive(TS))]
+#[cfg_attr(feature = "full", ts(export))]
+pub struct ApproveCommunityPendingFollower {
+  pub community_id: CommunityId,
+  pub follower_id: PersonId,
+  pub approve: bool,
+}

crates/api_common/src/context.rs

@@ -57,7 +57,7 @@ impl LemmyContext {
   /// Do not use this in production code.
   pub async fn init_test_federation_config() -> FederationConfig<LemmyContext> {
     // call this to run migrations
-    let pool = build_db_pool_for_tests().await;
+    let pool = build_db_pool_for_tests();
 
     let client = client_builder(&SETTINGS).build().expect("build client");
 

crates/api_common/src/request.rs

@@ -175,7 +175,7 @@ pub async fn generate_post_link_metadata(
   };
   let updated_post = Post::update(&mut context.pool(), post.id, &form).await?;
   if let Some(send_activity) = send_activity(updated_post) {
-    ActivityChannel::submit_activity(send_activity, &context).await?;
+    ActivityChannel::submit_activity(send_activity, &context)?;
   }
   Ok(())
 }

crates/api_common/src/send_activity.rs

@@ -59,6 +59,8 @@ pub enum SendActivityData {
     score: i16,
   },
   FollowCommunity(Community, Person, bool),
+  AcceptFollower(CommunityId, PersonId),
+  RejectFollower(CommunityId, PersonId),
   UpdateCommunity(Person, Community),
   DeleteCommunity(Person, Community, bool),
   RemoveCommunity {
@@ -123,10 +125,7 @@ impl ActivityChannel {
     lock.recv().await
   }
 
-  pub async fn submit_activity(
-    data: SendActivityData,
-    _context: &Data<LemmyContext>,
-  ) -> LemmyResult<()> {
+  pub fn submit_activity(data: SendActivityData, _context: &Data<LemmyContext>) -> LemmyResult<()> {
     // could do `ACTIVITY_CHANNEL.keepalive_sender.lock()` instead and get rid of weak_sender,
     // not sure which way is more efficient
     if let Some(sender) = ACTIVITY_CHANNEL.weak_sender.upgrade() {

crates/api_common/src/utils.rs

@@ -42,6 +42,7 @@ use lemmy_db_views::{
   structs::{LocalImageView, LocalUserView, SiteView},
 };
 use lemmy_db_views_actor::structs::{
+  CommunityFollowerView,
   CommunityModeratorView,
   CommunityPersonBanView,
   CommunityView,
@@ -232,20 +233,17 @@ pub async fn check_registration_application(
 /// the user isn't banned.
 pub async fn check_community_user_action(
   person: &Person,
-  community_id: CommunityId,
+  community: &Community,
   pool: &mut DbPool<'_>,
 ) -> LemmyResult<()> {
   check_user_valid(person)?;
-  check_community_deleted_removed(community_id, pool).await?;
-  CommunityPersonBanView::check(pool, person.id, community_id).await?;
+  check_community_deleted_removed(community)?;
+  CommunityPersonBanView::check(pool, person.id, community.id).await?;
+  CommunityFollowerView::check_private_community_action(pool, person.id, community).await?;
   Ok(())
 }
 
-async fn check_community_deleted_removed(
-  community_id: CommunityId,
-  pool: &mut DbPool<'_>,
-) -> LemmyResult<()> {
-  let community = Community::read(pool, community_id).await?;
+pub fn check_community_deleted_removed(community: &Community) -> LemmyResult<()> {
   if community.deleted || community.removed {
     Err(LemmyErrorType::Deleted)?
   }
@@ -258,16 +256,16 @@ async fn check_community_deleted_removed(
 /// removed/deleted.
 pub async fn check_community_mod_action(
   person: &Person,
-  community_id: CommunityId,
+  community: &Community,
   allow_deleted: bool,
   pool: &mut DbPool<'_>,
 ) -> LemmyResult<()> {
-  is_mod_or_admin(pool, person, community_id).await?;
-  CommunityPersonBanView::check(pool, person.id, community_id).await?;
+  is_mod_or_admin(pool, person, community.id).await?;
+  CommunityPersonBanView::check(pool, person.id, community.id).await?;
 
   // it must be possible to restore deleted community
   if !allow_deleted {
-    check_community_deleted_removed(community_id, pool).await?;
+    check_community_deleted_removed(community)?;
   }
   Ok(())
 }

crates/api_crud/src/comment/create.rs

@@ -61,7 +61,12 @@ pub async fn create_comment(
   let post = post_view.post;
   let community_id = post_view.community.id;
 
-  check_community_user_action(&local_user_view.person, community_id, &mut context.pool()).await?;
+  check_community_user_action(
+    &local_user_view.person,
+    &post_view.community,
+    &mut context.pool(),
+  )
+  .await?;
   check_post_deleted_or_removed(&post)?;
 
   // Check if post is locked, no new comments
@@ -143,8 +148,7 @@ pub async fn create_comment(
   ActivityChannel::submit_activity(
     SendActivityData::CreateComment(inserted_comment.clone()),
     &context,
-  )
-  .await?;
+  )?;
 
   // Update the read comments, so your own new comment doesn't appear as a +1 unread
   update_read_comments(

crates/api_crud/src/comment/delete.rs

@@ -35,7 +35,7 @@ pub async fn delete_comment(
 
   check_community_user_action(
     &local_user_view.person,
-    orig_comment.community.id,
+    &orig_comment.community,
     &mut context.pool(),
   )
   .await?;
@@ -76,8 +76,7 @@ pub async fn delete_comment(
       orig_comment.community,
     ),
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(
     build_comment_response(

crates/api_crud/src/comment/remove.rs

@@ -35,7 +35,7 @@ pub async fn remove_comment(
 
   check_community_mod_action(
     &local_user_view.person,
-    orig_comment.community.id,
+    &orig_comment.community,
     false,
     &mut context.pool(),
   )
@@ -99,8 +99,7 @@ pub async fn remove_comment(
       reason: data.reason.clone(),
     },
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(
     build_comment_response(

crates/api_crud/src/comment/update.rs

@@ -45,7 +45,7 @@ pub async fn update_comment(
 
   check_community_user_action(
     &local_user_view.person,
-    orig_comment.community.id,
+    &orig_comment.community,
     &mut context.pool(),
   )
   .await?;
@@ -98,8 +98,7 @@ pub async fn update_comment(
   ActivityChannel::submit_activity(
     SendActivityData::UpdateComment(updated_comment.clone()),
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(
     build_comment_response(

crates/api_crud/src/community/create.rs

@@ -1,3 +1,4 @@
+use super::check_community_visibility_allowed;
 use activitypub_federation::{config::Data, http_signatures::generate_actor_keypair};
 use actix_web::web::Json;
 use lemmy_api_common::{
@@ -23,6 +24,7 @@ use lemmy_db_schema::{
       Community,
       CommunityFollower,
       CommunityFollowerForm,
+      CommunityFollowerState,
       CommunityInsertForm,
       CommunityModerator,
       CommunityModeratorForm,
@@ -82,6 +84,12 @@ pub async fn create_community(
 
   is_valid_actor_name(&data.name, local_site.actor_name_max_length as usize)?;
 
+  if let Some(desc) = &data.description {
+    is_valid_body_field(desc, false)?;
+  }
+
+  check_community_visibility_allowed(data.visibility, &local_user_view)?;
+
   // Double check for duplicate community actor_ids
   let community_actor_id = generate_local_apub_endpoint(
     EndpointType::Community,
@@ -135,7 +143,8 @@ pub async fn create_community(
   let community_follower_form = CommunityFollowerForm {
     community_id: inserted_community.id,
     person_id: local_user_view.person.id,
-    pending: false,
+    state: Some(CommunityFollowerState::Accepted),
+    approver_id: None,
   };
 
   CommunityFollower::follow(&mut context.pool(), &community_follower_form)

crates/api_crud/src/community/delete.rs

@@ -22,13 +22,13 @@ pub async fn delete_community(
   local_user_view: LocalUserView,
 ) -> LemmyResult<Json<CommunityResponse>> {
   // Fetch the community mods
-  let community_id = data.community_id;
   let community_mods =
-    CommunityModeratorView::for_community(&mut context.pool(), community_id).await?;
+    CommunityModeratorView::for_community(&mut context.pool(), data.community_id).await?;
 
+  let community = Community::read(&mut context.pool(), data.community_id).await?;
   check_community_mod_action(
     &local_user_view.person,
-    community_id,
+    &community,
     true,
     &mut context.pool(),
   )
@@ -54,8 +54,7 @@ pub async fn delete_community(
   ActivityChannel::submit_activity(
     SendActivityData::DeleteCommunity(local_user_view.person.clone(), community, data.deleted),
     &context,
-  )
-  .await?;
+  )?;
 
   build_community_response(&context, local_user_view, community_id).await
 }

crates/api_crud/src/community/mod.rs

@@ -1,5 +1,22 @@
+use lemmy_api_common::utils::is_admin;
+use lemmy_db_schema::CommunityVisibility;
+use lemmy_db_views::structs::LocalUserView;
+use lemmy_utils::error::LemmyResult;
+
 pub mod create;
 pub mod delete;
 pub mod list;
 pub mod remove;
 pub mod update;
+
+/// For now only admins can make communities private, in order to prevent abuse.
+/// Need to implement admin approval for new communities to get rid of this.
+fn check_community_visibility_allowed(
+  visibility: Option<CommunityVisibility>,
+  local_user_view: &LocalUserView,
+) -> LemmyResult<()> {
+  if visibility == Some(lemmy_db_schema::CommunityVisibility::Private) {
+    is_admin(local_user_view)?;
+  }
+  Ok(())
+}

crates/api_crud/src/community/remove.rs

@@ -23,9 +23,10 @@ pub async fn remove_community(
   context: Data<LemmyContext>,
   local_user_view: LocalUserView,
 ) -> LemmyResult<Json<CommunityResponse>> {
+  let community = Community::read(&mut context.pool(), data.community_id).await?;
   check_community_mod_action(
     &local_user_view.person,
-    data.community_id,
+    &community,
     true,
     &mut context.pool(),
   )
@@ -65,8 +66,7 @@ pub async fn remove_community(
       removed: data.removed,
     },
     &context,
-  )
-  .await?;
+  )?;
 
   build_community_response(&context, local_user_view, community_id).await
 }

crates/api_crud/src/community/update.rs

@@ -1,3 +1,4 @@
+use super::check_community_visibility_allowed;
 use activitypub_federation::config::Data;
 use actix_web::web::Json;
 use lemmy_api_common::{
@@ -51,6 +52,7 @@ pub async fn update_community(
     is_valid_body_field(sidebar, false)?;
   }
 
+  check_community_visibility_allowed(data.visibility, &local_user_view)?;
   let description = diesel_string_update(data.description.as_deref());
 
   let old_community = Community::read(&mut context.pool(), data.community_id).await?;
@@ -66,7 +68,7 @@ pub async fn update_community(
   // Verify its a mod (only mods can edit it)
   check_community_mod_action(
     &local_user_view.person,
-    data.community_id,
+    &old_community,
     false,
     &mut context.pool(),
   )
@@ -105,8 +107,7 @@ pub async fn update_community(
   ActivityChannel::submit_activity(
     SendActivityData::UpdateCommunity(local_user_view.person.clone(), community),
     &context,
-  )
-  .await?;
+  )?;
 
   build_community_response(&context, local_user_view, community_id).await
 }

crates/api_crud/src/post/create.rs

@@ -85,15 +85,9 @@ pub async fn create_post(
     is_valid_body_field(body, true)?;
   }
 
-  check_community_user_action(
-    &local_user_view.person,
-    data.community_id,
-    &mut context.pool(),
-  )
-  .await?;
+  let community = Community::read(&mut context.pool(), data.community_id).await?;
+  check_community_user_action(&local_user_view.person, &community, &mut context.pool()).await?;
 
-  let community_id = data.community_id;
-  let community = Community::read(&mut context.pool(), community_id).await?;
   if community.posting_restricted_to_mods {
     let community_id = data.community_id;
     CommunityModeratorView::check_is_community_moderator(
@@ -110,7 +104,7 @@ pub async fn create_post(
     None => {
       default_post_language(
         &mut context.pool(),
-        community_id,
+        community.id,
         local_user_view.local_user.id,
       )
       .await?
@@ -119,7 +113,7 @@ pub async fn create_post(
 
   // Only need to check if language is allowed in case user set it explicitly. When using default
   // language, it already only returns allowed languages.
-  CommunityLanguage::is_allowed_community_language(&mut context.pool(), language_id, community_id)
+  CommunityLanguage::is_allowed_community_language(&mut context.pool(), language_id, community.id)
     .await?;
 
   let scheduled_publish_time =
@@ -142,6 +136,7 @@ pub async fn create_post(
     .await
     .with_lemmy_type(LemmyErrorType::CouldntCreatePost)?;
 
+  let community_id = community.id;
   let federate_post = if scheduled_publish_time.is_none() {
     send_webmention(inserted_post.clone(), community);
     |post| Some(SendActivityData::CreatePost(post))

crates/api_crud/src/post/delete.rs

@@ -8,7 +8,10 @@ use lemmy_api_common::{
   utils::check_community_user_action,
 };
 use lemmy_db_schema::{
-  source::post::{Post, PostUpdateForm},
+  source::{
+    community::Community,
+    post::{Post, PostUpdateForm},
+  },
   traits::Crud,
 };
 use lemmy_db_views::structs::LocalUserView;
@@ -28,12 +31,8 @@ pub async fn delete_post(
     Err(LemmyErrorType::CouldntUpdatePost)?
   }
 
-  check_community_user_action(
-    &local_user_view.person,
-    orig_post.community_id,
-    &mut context.pool(),
-  )
-  .await?;
+  let community = Community::read(&mut context.pool(), orig_post.community_id).await?;
+  check_community_user_action(&local_user_view.person, &community, &mut context.pool()).await?;
 
   // Verify that only the creator can delete
   if !Post::is_post_creator(local_user_view.person.id, orig_post.creator_id) {
@@ -54,8 +53,7 @@ pub async fn delete_post(
   ActivityChannel::submit_activity(
     SendActivityData::DeletePost(post, local_user_view.person.clone(), data.0),
     &context,
-  )
-  .await?;
+  )?;
 
   build_post_response(
     &context,

crates/api_crud/src/post/remove.rs

@@ -9,6 +9,7 @@ use lemmy_api_common::{
 };
 use lemmy_db_schema::{
   source::{
+    community::Community,
     local_user::LocalUser,
     moderator::{ModRemovePost, ModRemovePostForm},
     post::{Post, PostUpdateForm},
@@ -26,11 +27,16 @@ pub async fn remove_post(
   local_user_view: LocalUserView,
 ) -> LemmyResult<Json<PostResponse>> {
   let post_id = data.post_id;
+
+  // We cannot use PostView to avoid a database read here, as it doesn't return removed items
+  // by default. So we would have to pass in `is_mod_or_admin`, but that is impossible without
+  // knowing which community the post belongs to.
   let orig_post = Post::read(&mut context.pool(), post_id).await?;
+  let community = Community::read(&mut context.pool(), orig_post.community_id).await?;
 
   check_community_mod_action(
     &local_user_view.person,
-    orig_post.community_id,
+    &community,
     false,
     &mut context.pool(),
   )
@@ -77,8 +83,7 @@ pub async fn remove_post(
       removed: data.removed,
     },
     &context,
-  )
-  .await?;
+  )?;
 
   build_post_response(&context, orig_post.community_id, local_user_view, post_id).await
 }

crates/api_crud/src/post/update.rs

@@ -24,7 +24,7 @@ use lemmy_db_schema::{
   traits::Crud,
   utils::{diesel_string_update, diesel_url_update, naive_now},
 };
-use lemmy_db_views::structs::LocalUserView;
+use lemmy_db_views::structs::{LocalUserView, PostView};
 use lemmy_utils::{
   error::{LemmyErrorExt, LemmyErrorType, LemmyResult},
   utils::{
@@ -87,17 +87,17 @@ pub async fn update_post(
   }
 
   let post_id = data.post_id;
-  let orig_post = Post::read(&mut context.pool(), post_id).await?;
+  let orig_post = PostView::read(&mut context.pool(), post_id, None, false).await?;
 
   check_community_user_action(
     &local_user_view.person,
-    orig_post.community_id,
+    &orig_post.community,
     &mut context.pool(),
   )
   .await?;
 
   // Verify that only the creator can edit
-  if !Post::is_post_creator(local_user_view.person.id, orig_post.creator_id) {
+  if !Post::is_post_creator(local_user_view.person.id, orig_post.post.creator_id) {
     Err(LemmyErrorType::NoPostEditAllowed)?
   }
 
@@ -105,14 +105,14 @@ pub async fn update_post(
     CommunityLanguage::is_allowed_community_language(
       &mut context.pool(),
       language_id,
-      orig_post.community_id,
+      orig_post.community.id,
     )
     .await?;
   }
 
   // handle changes to scheduled_publish_time
   let scheduled_publish_time = match (
-    orig_post.scheduled_publish_time,
+    orig_post.post.scheduled_publish_time,
     data.scheduled_publish_time,
   ) {
     // schedule time can be changed if post is still scheduled (and not published yet)
@@ -144,12 +144,12 @@ pub async fn update_post(
 
   // send out federation/webmention if necessary
   match (
-    orig_post.scheduled_publish_time,
+    orig_post.post.scheduled_publish_time,
     data.scheduled_publish_time,
   ) {
     // schedule was removed, send create activity and webmention
     (Some(_), None) => {
-      let community = Community::read(&mut context.pool(), orig_post.community_id).await?;
+      let community = Community::read(&mut context.pool(), orig_post.community.id).await?;
       send_webmention(updated_post.clone(), community);
       generate_post_link_metadata(
         updated_post.clone(),
@@ -175,7 +175,7 @@ pub async fn update_post(
 
   build_post_response(
     context.deref(),
-    orig_post.community_id,
+    orig_post.community.id,
     local_user_view,
     post_id,
   )

crates/api_crud/src/private_message/create.rs

@@ -78,8 +78,7 @@ pub async fn create_private_message(
   ActivityChannel::submit_activity(
     SendActivityData::CreatePrivateMessage(view.clone()),
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(PrivateMessageResponse {
     private_message_view: view,

crates/api_crud/src/private_message/delete.rs

@@ -42,8 +42,7 @@ pub async fn delete_private_message(
   ActivityChannel::submit_activity(
     SendActivityData::DeletePrivateMessage(local_user_view.person, private_message, data.deleted),
     &context,
-  )
-  .await?;
+  )?;
 
   let view = PrivateMessageView::read(&mut context.pool(), private_message_id).await?;
   Ok(Json(PrivateMessageResponse {

crates/api_crud/src/private_message/update.rs

@@ -59,8 +59,7 @@ pub async fn update_private_message(
   ActivityChannel::submit_activity(
     SendActivityData::UpdatePrivateMessage(view.clone()),
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(PrivateMessageResponse {
     private_message_view: view,

crates/api_crud/src/user/delete.rs

@@ -45,8 +45,7 @@ pub async fn delete_account(
   ActivityChannel::submit_activity(
     SendActivityData::DeleteUser(local_user_view.person, data.delete_content),
     &context,
-  )
-  .await?;
+  )?;
 
   Ok(Json(SuccessResponse::default()))
 }

crates/apub/src/activities/block/block_user.rs

@@ -1,3 +1,4 @@
+use super::to_and_audience;
 use crate::{
   activities::{
     block::{generate_cc, SiteOrCommunity},
@@ -7,6 +8,7 @@ use crate::{
     verify_is_public,
     verify_mod_action,
     verify_person_in_community,
+    verify_visibility,
   },
   activity_lists::AnnouncableActivities,
   insert_received_activity,
@@ -15,7 +17,7 @@ use crate::{
 };
 use activitypub_federation::{
   config::Data,
-  kinds::{activity::BlockType, public},
+  kinds::activity::BlockType,
   protocol::verification::verify_domains_match,
   traits::{ActivityHandler, Actor},
 };
@@ -52,14 +54,10 @@ impl BlockUser {
     expires: Option<DateTime<Utc>>,
     context: &Data<LemmyContext>,
   ) -> LemmyResult<BlockUser> {
-    let audience = if let SiteOrCommunity::Community(c) = target {
-      Some(c.id().into())
-    } else {
-      None
-    };
+    let (to, audience) = to_and_audience(target)?;
     Ok(BlockUser {
       actor: mod_.id().into(),
-      to: vec![public()],
+      to,
       object: user.id().into(),
       cc: generate_cc(target, &mut context.pool()).await?,
       target: target.id(),
@@ -125,9 +123,9 @@ impl ActivityHandler for BlockUser {
 
   #[tracing::instrument(skip_all)]
   async fn verify(&self, context: &Data<LemmyContext>) -> LemmyResult<()> {
-    verify_is_public(&self.to, &self.cc)?;
     match self.target.dereference(context).await? {
       SiteOrCommunity::Site(site) => {
+        verify_is_public(&self.to, &self.cc)?;
         let domain = self
           .object
           .inner()
@@ -143,6 +141,7 @@ impl ActivityHandler for BlockUser {
         verify_domains_match(&site.id(), self.object.inner())?;
       }
       SiteOrCommunity::Community(community) => {
+        verify_visibility(&self.to, &self.cc, &community)?;
         verify_person_in_community(&self.actor, &community, context).await?;
         verify_mod_action(&self.actor, &community, context).await?;
       }
@@ -194,11 +193,7 @@ impl ActivityHandler for BlockUser {
         CommunityPersonBan::ban(&mut context.pool(), &community_user_ban_form).await?;
 
         // Also unsubscribe them from the community, if they are subscribed
-        let community_follower_form = CommunityFollowerForm {
-          community_id: community.id,
-          person_id: blocked_person.id,
-          pending: false,
-        };
+        let community_follower_form = CommunityFollowerForm::new(community.id, blocked_person.id);
         CommunityFollower::unfollow(&mut context.pool(), &community_follower_form)
           .await
           .ok();

crates/apub/src/activities/block/mod.rs

@@ -1,3 +1,4 @@
+use super::generate_to;
 use crate::{
   objects::{community::ApubCommunity, instance::ApubSite},
   protocol::{
@@ -8,6 +9,7 @@ use crate::{
 use activitypub_federation::{
   config::Data,
   fetch::object_id::ObjectId,
+  kinds::public,
   traits::{Actor, Object},
 };
 use chrono::{DateTime, Utc};
@@ -205,3 +207,13 @@ pub(crate) async fn send_ban_from_community(
     .await
   }
 }
+
+fn to_and_audience(
+  target: &SiteOrCommunity,
+) -> LemmyResult<(Vec<Url>, Option<ObjectId<ApubCommunity>>)> {
+  Ok(if let SiteOrCommunity::Community(c) = target {
+    (vec![generate_to(c)?], Some(c.id().into()))
+  } else {
+    (vec![public()], None)
+  })
+}

crates/apub/src/activities/block/undo_block_user.rs

@@ -1,3 +1,4 @@
+use super::to_and_audience;
 use crate::{
   activities::{
     block::{generate_cc, SiteOrCommunity},
@@ -5,6 +6,7 @@ use crate::{
     generate_activity_id,
     send_lemmy_activity,
     verify_is_public,
+    verify_visibility,
   },
   activity_lists::AnnouncableActivities,
   insert_received_activity,
@@ -13,7 +15,7 @@ use crate::{
 };
 use activitypub_federation::{
   config::Data,
-  kinds::{activity::UndoType, public},
+  kinds::activity::UndoType,
   protocol::verification::verify_domains_match,
   traits::{ActivityHandler, Actor},
 };
@@ -44,11 +46,7 @@ impl UndoBlockUser {
     context: &Data<LemmyContext>,
   ) -> LemmyResult<()> {
     let block = BlockUser::new(target, user, mod_, None, reason, None, context).await?;
-    let audience = if let SiteOrCommunity::Community(c) = target {
-      Some(c.id().into())
-    } else {
-      None
-    };
+    let (to, audience) = to_and_audience(target)?;
 
     let id = generate_activity_id(
       UndoType::Undo,
@@ -56,7 +54,7 @@ impl UndoBlockUser {
     )?;
     let undo = UndoBlockUser {
       actor: mod_.id().into(),
-      to: vec![public()],
+      to,
       object: block,
       cc: generate_cc(target, &mut context.pool()).await?,
       kind: UndoType::Undo,
@@ -94,7 +92,6 @@ impl ActivityHandler for UndoBlockUser {
 
   #[tracing::instrument(skip_all)]
   async fn verify(&self, context: &Data<LemmyContext>) -> LemmyResult<()> {
-    verify_is_public(&self.to, &self.cc)?;
     verify_domains_match(self.actor.inner(), self.object.actor.inner())?;
     self.object.verify(context).await?;
     Ok(())
@@ -108,6 +105,7 @@ impl ActivityHandler for UndoBlockUser {
     let blocked_person = self.object.object.dereference(context).await?;
     match self.object.target.dereference(context).await? {
       SiteOrCommunity::Site(_site) => {
+        verify_is_public(&self.to, &self.cc)?;
         let blocked_person = Person::update(
           &mut context.pool(),
           blocked_person.id,
@@ -135,6 +133,7 @@ impl ActivityHandler for UndoBlockUser {
         ModBan::create(&mut context.pool(), &form).await?;
       }
       SiteOrCommunity::Community(community) => {
+        verify_visibility(&self.to, &self.cc, &community)?;
         let community_user_ban_form = CommunityPersonBanForm {
           community_id: community.id,
           person_id: blocked_person.id,

crates/apub/src/activities/community/announce.rs

@@ -2,9 +2,10 @@ use crate::{
   activities::{
     generate_activity_id,
     generate_announce_activity_id,
+    generate_to,
     send_lemmy_activity,
-    verify_is_public,
     verify_person_in_community,
+    verify_visibility,
   },
   activity_lists::AnnouncableActivities,
   insert_received_activity,
@@ -18,7 +19,7 @@ use crate::{
 };
 use activitypub_federation::{
   config::Data,
-  kinds::{activity::AnnounceType, public},
+  kinds::activity::AnnounceType,
   traits::{ActivityHandler, Actor},
 };
 use lemmy_api_common::context::LemmyContext;
@@ -92,7 +93,7 @@ impl AnnounceActivity {
       generate_announce_activity_id(inner_kind, &context.settings().get_protocol_and_hostname())?;
     Ok(AnnounceActivity {
       actor: community.id().into(),
-      to: vec![public()],
+      to: vec![generate_to(community)?],
       object: IdOrNestedObject::NestedObject(object),
       cc: community
         .followers_url
@@ -154,7 +155,6 @@ impl ActivityHandler for AnnounceActivity {
 
   #[tracing::instrument(skip_all)]
   async fn verify(&self, _context: &Data<Self::DataType>) -> LemmyResult<()> {
-    verify_is_public(&self.to, &self.cc)?;
     Ok(())
   }
 
@@ -169,6 +169,7 @@ impl ActivityHandler for AnnounceActivity {
     }
 
     let community = object.community(context).await?;
+    verify_visibility(&self.to, &self.cc, &community)?;
     can_accept_activity_in_community(&Some(community), context).await?;
 
     // verify here in order to avoid fetching the object twice over http

crates/apub/src/activities/community/collection_add.rs

@@ -2,9 +2,10 @@ use crate::{
   activities::{
     community::send_activity_in_community,
     generate_activity_id,
-    verify_is_public,
+    generate_to,
     verify_mod_action,
     verify_person_in_community,
+    verify_visibility,
   },
   activity_lists::AnnouncableActivities,
   insert_received_activity,
@@ -17,7 +18,7 @@ use crate::{
 use activitypub_federation::{
   config::Data,
   fetch::object_id::ObjectId,
-  kinds::{activity::AddType, public},
+  kinds::activity::AddType,
   traits::{ActivityHandler, Actor},
 };
 use lemmy_api_common::{
@@ -53,7 +54,7 @@ impl CollectionAdd {
     )?;
     let add = CollectionAdd {
       actor: actor.id().into(),
-      to: vec![public()],
+      to: vec![generate_to(community)?],
       object: added_mod.id(),
       target: generate_moderators_url(&community.actor_id)?.into(),
       cc: vec![community.id()],
@@ -79,7 +80,7 @@ impl CollectionAdd {
     )?;
     let add = CollectionAdd {
       actor: actor.id().into(),
-      to: vec![public()],
+      to: vec![generate_to(community)?],
       object: featured_post.ap_id.clone().into(),
       target: generate_featured_url(&community.actor_id)?.into(),
       cc: vec![community.id()],
@@ -115,8 +116,8 @@ impl ActivityHandler for CollectionAdd {
 
   #[tracing::instrument(skip_all)]
   async fn verify(&self, context: &Data<Self::DataType>) -> LemmyResult<()> {
-    verify_is_public(&self.to, &self.cc)?;
     let community = self.community(context).await?;
+    verify_visibility(&self.to, &self.cc, &community)?;
     verify_person_in_community(&self.actor, &community, context).await?;
     verify_mod_action(&self.actor, &community, context).await?;
     Ok(())

crates/apub/src/activities/community/collection_remove.rs

@@ -2,9 +2,10 @@ use crate::{
   activities::{
     community::send_activity_in_community,
     generate_activity_id,
-    verify_is_public,
+    generate_to,
     verify_mod_action,
     verify_person_in_community,
+    verify_visibility,
   },
   activity_lists::AnnouncableActivities,
   insert_received_activity,
@@ -14,7 +15,7 @@ use crate::{
 use activitypub_federation::{
   config::Data,
   fetch::object_id::ObjectId,
-  kinds::{activity::RemoveType, public},
+  kinds::activity::RemoveType,
   traits::{ActivityHandler, Actor},
 };
 use lemmy_api_common::{
@@ -48,7 +49,7 @@ impl CollectionRemove {
     )?;
     let remove = CollectionRemove {
       actor: actor.id().into(),
-      to: vec![public()],
+      to: vec![generate_to(community)?],
       object: removed_mod.id(),
       target: generate_moderators_url(&community.actor_id)?.into(),
       id: id.clone(),
@@ -74,7 +75,7 @@ impl CollectionRemove {
     )?;
     let remove = CollectionRemove {
       actor: actor.id().into(),
-      to: vec![public()],
+      to: vec![generate_to(community)?],
       object: featured_post.ap_id.clone().into(),
       target: generate_featured_url(&community.actor_id)?.into(),
       cc: vec![community.id()],
@@ -110,8 +111,8 @@ impl ActivityHandler for CollectionRemove {
 
   #[tracing::instrument(skip_all)]
   async fn verify(&self, context: &Data<Self::DataType>) -> LemmyResult<()> {
-    verify_is_public(&self.to, &self.cc)?;
     let community = self.community(context).await?;
+    verify_visibility(&self.to, &self.cc, &community)?;
     verify_person_in_community(&self.actor, &community, context).await?;
     verify_mod_action(&self.actor, &community, context).await?;
     Ok(())

crates/apub/src/activities/community/lock_page.rs

@@ -3,9 +3,10 @@ use crate::{
     check_community_deleted_or_removed,
     community::send_activity_in_community,
     generate_activity_id,
-    verify_is_public,
+    generate_to,
     verify_mod_action,
     verify_person_in_community,
+    verify_visibility,
   },
   activity_lists::AnnouncableActivities,
   insert_received_activity,
@@ -18,7 +19,7 @@ use crate::{
 use activitypub_federation::{
   config::Data,
   fetch::object_id::ObjectId,
-  kinds::{activity::UndoType, public},
+  kinds::activity::UndoType,
   traits::ActivityHandler,
 };
 use lemmy_api_common::context::LemmyContext;
@@ -49,8 +50,8 @@ impl ActivityHandler for LockPage {
   }
 
   async fn verify(&self, context: &Data<Self::DataType>) -> Result<(), Self::Error> {
-    verify_is_public(&self.to, &self.cc)?;
     let community = self.community(context).await?;
+    verify_visibility(&self.to, &self.cc, &community)?;
     verify_person_in_community(&self.actor, &community, context).await?;
     check_community_deleted_or_removed(&community)?;
     verify_mod_action(&self.actor, &community, context).await?;
@@ -92,8 +93,8 @@ impl ActivityHandler for UndoLockPage {
   }
 
   async fn verify(&self, context: &Data<Self::DataType>) -> Result<(), Self::Error> {
-    verify_is_public(&self.to, &self.cc)?;
     let community = self.community(context).await?;
+    verify_visibility(&self.to, &self.cc, &community)?;
     verify_person_in_community(&self.actor, &community, context).await?;
     check_community_deleted_or_removed(&community)?;
     verify_mod_action(&self.actor, &community, context).await?;
@@ -137,7 +138,7 @@ pub(crate) async fn send_lock_post(
   let community_id = community.actor_id.inner().clone();
   let lock = LockPage {
     actor: actor.actor_id.clone().into(),
-    to: vec![public()],
+    to: vec![generate_to(&community)?],
     object: ObjectId::from(post.ap_id),
     cc: vec![community_id.clone()],
     kind: LockType::Lock,
@@ -153,7 +154,7 @@ pub(crate) async fn send_lock_post(
     )?;
     let undo = UndoLockPage {
       actor: lock.actor.clone(),
-      to: vec![public()],
+      to: vec![generate_to(&community)?],
       cc: lock.cc.clone(),
       kind: UndoType::Undo,
       id,

crates/apub/src/activities/community/update.rs

@@ -2,9 +2,10 @@ use crate::{
   activities::{
     community::send_activity_in_community,
     generate_activity_id,
-    verify_is_public,
+    generate_to,
     verify_mod_action,
     verify_person_in_community,
+    verify_visibility,
   },
   activity_lists::AnnouncableActivities,
   insert_received_activity,
@@ -13,7 +14,7 @@ use crate::{
 };
 use activitypub_federation::{
   config::Data,
-  kinds::{activity::UpdateType, public},
+  kinds::activity::UpdateType,
   traits::{ActivityHandler, Actor, Object},
 };
 use lemmy_api_common::context::LemmyContext;
@@ -42,7 +43,7 @@ pub(crate) async fn send_update_community(
   )?;
   let update = UpdateCommunity {
     actor: actor.id().into(),
-    to: vec![public()],
+    to: vec![generate_to(&community)?],
     object: Box::new(community.clone().into_json(&context).await?),
     cc: vec![community.id()],
     kind: UpdateType::Update,
@@ -77,8 +78,8 @@ impl ActivityHandler for UpdateCommunity {
 
   #[tracing::instrument(skip_all)]
   async fn verify(&self, context: &Data<Self::DataType>) -> LemmyResult<()> {
-    verify_is_public(&self.to, &self.cc)?;
     let community = self.community(context).await?;
+    verify_visibility(&self.to, &self.cc, &community)?;
     verify_person_in_community(&self.actor, &community, context).await?;
     verify_mod_action(&self.actor, &community, context).await?;
     ApubCommunity::verify(&self.object, &community.actor_id.clone().into(), context).await?;

crates/apub/src/activities/create_or_update/comment.rs

@@ -3,8 +3,9 @@ use crate::{
     check_community_deleted_or_removed,
     community::send_activity_in_community,
     generate_activity_id,
-    verify_is_public,
+    generate_to,
     verify_person_in_community,
+    verify_visibility,
   },
   activity_lists::AnnouncableActivities,
   insert_received_activity,
@@ -18,7 +19,6 @@ use crate::{
 use activitypub_federation::{
   config::Data,
   fetch::object_id::ObjectId,
-  kinds::public,
   protocol::verification::{verify_domains_match, verify_urls_match},
   traits::{ActivityHandler, Actor, Object},
 };
@@ -70,7 +70,7 @@ impl CreateOrUpdateNote {
 
     let create_or_update = CreateOrUpdateNote {
       actor: person.id().into(),
-      to: vec![public()],
+      to: vec![generate_to(&community)?],
       cc: note.cc.clone(),
       tag: note.tag.clone(),
       object: note,
@@ -118,9 +118,9 @@ impl ActivityHandler for CreateOrUpdateNote {
 
   #[tracing::instrument(skip_all)]
   async fn verify(&self, context: &Data<Self::DataType>) -> LemmyResult<()> {
-    verify_is_public(&self.to, &self.cc)?;
     let post = self.object.get_parents(context).await?.0;
     let community = self.community(context).await?;
+    verify_visibility(&self.to, &self.cc, &community)?;
 
     verify_person_in_community(&self.actor, &community, context).await?;
     verify_domains_match(self.actor.inner(), self.object.id.inner())?;

crates/apub/src/activities/create_or_update/post.rs

@@ -3,8 +3,9 @@ use crate::{
     check_community_deleted_or_removed,
     community::send_activity_in_community,
     generate_activity_id,
-    verify_is_public,
+    generate_to,
     verify_person_in_community,
+    verify_visibility,
   },
   activity_lists::AnnouncableActivities,
   insert_received_activity,
@@ -16,7 +17,6 @@ use crate::{
 };
 use activitypub_federation::{
   config::Data,
-  kinds::public,
   protocol::verification::{verify_domains_match, verify_urls_match},
   traits::{ActivityHandler, Actor, Object},
 };
@@ -49,7 +49,7 @@ impl CreateOrUpdatePage {
     )?;
     Ok(CreateOrUpdatePage {
       actor: actor.id().into(),
-      to: vec![public()],
+      to: vec![generate_to(community)?],
       object: post.into_json(context).await?,
       cc: vec![community.id()],
       kind,
@@ -102,8 +102,8 @@ impl ActivityHandler for CreateOrUpdatePage {
 
   #[tracing::instrument(skip_all)]
   async fn verify(&self, context: &Data<LemmyContext>) -> LemmyResult<()> {
-    verify_is_public(&self.to, &self.cc)?;
     let community = self.community(context).await?;
+    verify_visibility(&self.to, &self.cc, &community)?;
     verify_person_in_community(&self.actor, &community, context).await?;
     check_community_deleted_or_removed(&community)?;
     verify_domains_match(self.actor.inner(), self.object.id.inner())?;

crates/apub/src/activities/deletion/delete.rs

@@ -84,7 +84,7 @@ impl Delete {
   pub(in crate::activities::deletion) fn new(
     actor: &ApubPerson,
     object: DeletableObjects,
-    to: Url,
+    to: Vec<Url>,
     community: Option<&Community>,
     summary: Option<String>,
     context: &Data<LemmyContext>,
@@ -96,7 +96,7 @@ impl Delete {
     let cc: Option<Url> = community.map(|c| c.actor_id.clone().into());
     Ok(Delete {
       actor: actor.actor_id.clone().into(),
-      to: vec![to],
+      to,
       object: IdOrNestedObject::Id(object.id()),
       cc: cc.into_iter().collect(),
       kind: DeleteType::Delete,

crates/apub/src/activities/deletion/mod.rs

@@ -1,11 +1,12 @@
+use super::{generate_to, verify_is_public};
 use crate::{
   activities::{
     community::send_activity_in_community,
     send_lemmy_activity,
-    verify_is_public,
     verify_mod_action,
     verify_person,
     verify_person_in_community,
+    verify_visibility,
   },
   activity_lists::AnnouncableActivities,
   objects::{
@@ -59,11 +60,12 @@ pub(crate) async fn send_apub_delete_in_community(
 ) -> LemmyResult<()> {
   let actor = ApubPerson::from(actor);
   let is_mod_action = reason.is_some();
+  let to = vec![generate_to(&community)?];
   let activity = if deleted {
-    let delete = Delete::new(&actor, object, public(), Some(&community), reason, context)?;
+    let delete = Delete::new(&actor, object, to, Some(&community), reason, context)?;
     AnnouncableActivities::Delete(delete)
   } else {
-    let undo = UndoDelete::new(&actor, object, public(), Some(&community), reason, context)?;
+    let undo = UndoDelete::new(&actor, object, to, Some(&community), reason, context)?;
     AnnouncableActivities::UndoDelete(undo)
   };
   send_activity_in_community(
@@ -92,10 +94,10 @@ pub(crate) async fn send_apub_delete_private_message(
   let deletable = DeletableObjects::PrivateMessage(pm.into());
   let inbox = ActivitySendTargets::to_inbox(recipient.shared_inbox_or_inbox());
   if deleted {
-    let delete: Delete = Delete::new(actor, deletable, recipient.id(), None, None, &context)?;
+    let delete: Delete = Delete::new(actor, deletable, vec![recipient.id()], None, None, &context)?;
     send_lemmy_activity(&context, delete, actor, inbox, true).await?;
   } else {
-    let undo = UndoDelete::new(actor, deletable, recipient.id(), None, None, &context)?;
+    let undo = UndoDelete::new(actor, deletable, vec![recipient.id()], None, None, &context)?;
     send_lemmy_activity(&context, undo, actor, inbox, true).await?;
   };
   Ok(())
@@ -109,7 +111,7 @@ pub async fn send_apub_delete_user(
   let person: ApubPerson = person.into();
 
   let deletable = DeletableObjects::Person(person.clone());
-  let mut delete: Delete = Delete::new(&person, deletable, public(), None, None, &context)?;
+  let mut delete: Delete = Delete::new(&person, deletable, vec![public()], None, None, &context)?;
   delete.remove_data = Some(remove_data);
 
   let inboxes = ActivitySendTargets::to_all_instances();
@@ -170,7 +172,7 @@ pub(in crate::activities) async fn verify_delete_activity(
   let object = DeletableObjects::read_from_db(activity.object.id(), context).await?;
   match object {
     DeletableObjects::Community(community) => {
-      verify_is_public(&activity.to, &[])?;
+      verify_visibility(&activity.to, &[], &community)?;
       if community.local {
         // can only do this check for local community, in remote case it would try to fetch the
         // deleted community (which fails)
@@ -185,22 +187,24 @@ pub(in crate::activities) async fn verify_delete_activity(
       verify_urls_match(person.actor_id.inner(), activity.object.id())?;
     }
     DeletableObjects::Post(p) => {
-      verify_is_public(&activity.to, &[])?;
+      let community = activity.community(context).await?;
+      verify_visibility(&activity.to, &[], &community)?;
       verify_delete_post_or_comment(
         &activity.actor,
         &p.ap_id.clone().into(),
-        &activity.community(context).await?,
+        &community,
         is_mod_action,
         context,
       )
       .await?;
     }
     DeletableObjects::Comment(c) => {
-      verify_is_public(&activity.to, &[])?;
+      let community = activity.community(context).await?;
+      verify_visibility(&activity.to, &[], &community)?;
       verify_delete_post_or_comment(
         &activity.actor,
         &c.ap_id.clone().into(),
-        &activity.community(context).await?,
+        &community,
         is_mod_action,
         context,
       )

crates/apub/src/activities/deletion/undo_delete.rs

@@ -68,7 +68,7 @@ impl UndoDelete {
   pub(in crate::activities::deletion) fn new(
     actor: &ApubPerson,
     object: DeletableObjects,
-    to: Url,
+    to: Vec<Url>,
     community: Option<&Community>,
     summary: Option<String>,
     context: &Data<LemmyContext>,
@@ -82,7 +82,7 @@ impl UndoDelete {
     let cc: Option<Url> = community.map(|c| c.actor_id.clone().into());
     Ok(UndoDelete {
       actor: actor.actor_id.clone().into(),
-      to: vec![to],
+      to,
       object,
       cc: cc.into_iter().collect(),
       kind: UndoType::Undo,

crates/apub/src/activities/following/follow.rs

@@ -20,7 +20,7 @@ use lemmy_api_common::context::LemmyContext;
 use lemmy_db_schema::{
   source::{
     activity::ActivitySendTargets,
-    community::{CommunityFollower, CommunityFollowerForm},
+    community::{CommunityFollower, CommunityFollowerForm, CommunityFollowerState},
     person::{PersonFollower, PersonFollowerForm},
   },
   traits::Followable,
@@ -102,21 +102,25 @@ impl ActivityHandler for Follow {
           pending: false,
         };
         PersonFollower::follow(&mut context.pool(), &form).await?;
+        AcceptFollow::send(self, context).await?;
       }
       UserOrCommunity::Community(c) => {
-        // Dont allow following local-only community via federation.
-        if c.visibility != CommunityVisibility::Public {
-          return Err(LemmyErrorType::NotFound.into());
-        }
+        let state = Some(match c.visibility {
+          CommunityVisibility::Public => CommunityFollowerState::Accepted,
+          CommunityVisibility::Private => CommunityFollowerState::ApprovalRequired,
+          // Dont allow following local-only community via federation.
+          CommunityVisibility::LocalOnly => return Err(LemmyErrorType::NotFound.into()),
+        });
         let form = CommunityFollowerForm {
-          community_id: c.id,
-          person_id: actor.id,
-          pending: false,
+          state,
+          ..CommunityFollowerForm::new(c.id, actor.id)
         };
         CommunityFollower::follow(&mut context.pool(), &form).await?;
+        if c.visibility == CommunityVisibility::Public {
+          AcceptFollow::send(self, context).await?;
+        }
       }
     }
-
-    AcceptFollow::send(self, context).await
+    Ok(())
   }
 }

crates/apub/src/activities/following/mod.rs

@@ -1,15 +1,26 @@
+use super::generate_activity_id;
 use crate::{
   objects::{community::ApubCommunity, person::ApubPerson},
-  protocol::activities::following::{follow::Follow, undo_follow::UndoFollow},
+  protocol::activities::following::{
+    accept::AcceptFollow,
+    follow::Follow,
+    reject::RejectFollow,
+    undo_follow::UndoFollow,
+  },
 };
-use activitypub_federation::config::Data;
+use activitypub_federation::{config::Data, kinds::activity::FollowType};
 use lemmy_api_common::context::LemmyContext;
-use lemmy_db_schema::source::{community::Community, person::Person};
+use lemmy_db_schema::{
+  newtypes::{CommunityId, PersonId},
+  source::{community::Community, person::Person},
+  traits::Crud,
+};
 use lemmy_utils::error::LemmyResult;
 
-pub mod accept;
-pub mod follow;
-pub mod undo_follow;
+pub(crate) mod accept;
+pub(crate) mod follow;
+pub(crate) mod reject;
+pub(crate) mod undo_follow;
 
 pub async fn send_follow_community(
   community: Community,
@@ -25,3 +36,29 @@ pub async fn send_follow_community(
     UndoFollow::send(&actor, &community, context).await
   }
 }
+
+pub async fn send_accept_or_reject_follow(
+  community_id: CommunityId,
+  person_id: PersonId,
+  accepted: bool,
+  context: &Data<LemmyContext>,
+) -> LemmyResult<()> {
+  let community = Community::read(&mut context.pool(), community_id).await?;
+  let person = Person::read(&mut context.pool(), person_id).await?;
+
+  let follow = Follow {
+    actor: person.actor_id.into(),
+    to: Some([community.actor_id.clone().into()]),
+    object: community.actor_id.into(),
+    kind: FollowType::Follow,
+    id: generate_activity_id(
+      FollowType::Follow,
+      &context.settings().get_protocol_and_hostname(),
+    )?,
+  };
+  if accepted {
+    AcceptFollow::send(follow, context).await
+  } else {
+    RejectFollow::send(follow, context).await
+  }
+}

crates/apub/src/activities/following/reject.rs

@@ -0,0 +1,79 @@
+use crate::{
+  activities::{generate_activity_id, send_lemmy_activity},
+  insert_received_activity,
+  protocol::activities::following::{follow::Follow, reject::RejectFollow},
+};
+use activitypub_federation::{
+  config::Data,
+  kinds::activity::RejectType,
+  protocol::verification::verify_urls_match,
+  traits::{ActivityHandler, Actor},
+};
+use lemmy_api_common::context::LemmyContext;
+use lemmy_db_schema::{
+  source::{
+    activity::ActivitySendTargets,
+    community::{CommunityFollower, CommunityFollowerForm},
+  },
+  traits::Followable,
+};
+use lemmy_utils::error::{LemmyError, LemmyResult};
+use url::Url;
+
+impl RejectFollow {
+  #[tracing::instrument(skip_all)]
+  pub async fn send(follow: Follow, context: &Data<LemmyContext>) -> LemmyResult<()> {
+    let user_or_community = follow.object.dereference_local(context).await?;
+    let person = follow.actor.clone().dereference(context).await?;
+    let reject = RejectFollow {
+      actor: user_or_community.id().into(),
+      to: Some([person.id().into()]),
+      object: follow,
+      kind: RejectType::Reject,
+      id: generate_activity_id(
+        RejectType::Reject,
+        &context.settings().get_protocol_and_hostname(),
+      )?,
+    };
+    let inbox = ActivitySendTargets::to_inbox(person.shared_inbox_or_inbox());
+    send_lemmy_activity(context, reject, &user_or_community, inbox, true).await
+  }
+}
+
+/// Handle rejected follows
+#[async_trait::async_trait]
+impl ActivityHandler for RejectFollow {
+  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: &Data<LemmyContext>) -> LemmyResult<()> {
+    verify_urls_match(self.actor.inner(), self.object.object.inner())?;
+    self.object.verify(context).await?;
+    if let Some(to) = &self.to {
+      verify_urls_match(to[0].inner(), self.object.actor.inner())?;
+    }
+    Ok(())
+  }
+
+  #[tracing::instrument(skip_all)]
+  async fn receive(self, context: &Data<LemmyContext>) -> LemmyResult<()> {
+    insert_received_activity(&self.id, context).await?;
+    let community = self.actor.dereference(context).await?;
+    let person = self.object.actor.dereference(context).await?;
+
+    // remove the follow
+    let form = CommunityFollowerForm::new(community.id, person.id);
+    CommunityFollower::unfollow(&mut context.pool(), &form).await?;
+
+    Ok(())
+  }
+}

crates/apub/src/activities/following/undo_follow.rs

@@ -90,11 +90,7 @@ impl ActivityHandler for UndoFollow {
         PersonFollower::unfollow(&mut context.pool(), &form).await?;
       }
       UserOrCommunity::Community(c) => {
-        let form = CommunityFollowerForm {
-          community_id: c.id,
-          person_id: person.id,
-          pending: false,
-        };
+        let form = CommunityFollowerForm::new(c.id, person.id);
         CommunityFollower::unfollow(&mut context.pool(), &form).await?;
       }
     }

crates/apub/src/activities/mod.rs

@@ -30,6 +30,7 @@ use activitypub_federation::{
   traits::{ActivityHandler, Actor},
 };
 use anyhow::anyhow;
+use following::send_accept_or_reject_follow;
 use lemmy_api_common::{
   context::LemmyContext,
   send_activity::{ActivityChannel, SendActivityData},
@@ -40,6 +41,7 @@ use lemmy_db_schema::{
     community::Community,
   },
   traits::Crud,
+  CommunityVisibility,
 };
 use lemmy_db_views_actor::structs::{CommunityPersonBanView, CommunityView};
 use lemmy_utils::error::{FederationError, LemmyError, LemmyErrorExt, LemmyErrorType, LemmyResult};
@@ -120,6 +122,28 @@ pub(crate) fn verify_is_public(to: &[Url], cc: &[Url]) -> LemmyResult<()> {
   }
 }
 
+/// Returns an error if object visibility doesnt match community visibility
+/// (ie content in private community must also be private).
+pub(crate) fn verify_visibility(to: &[Url], cc: &[Url], community: &Community) -> LemmyResult<()> {
+  use CommunityVisibility::*;
+  let object_is_public = [to, cc].iter().any(|set| set.contains(&public()));
+  match community.visibility {
+    Public if !object_is_public => Err(FederationError::ObjectIsNotPublic)?,
+    Private if object_is_public => Err(FederationError::ObjectIsNotPrivate)?,
+    LocalOnly => Err(LemmyErrorType::NotFound.into()),
+    _ => Ok(()),
+  }
+}
+
+/// Marks object as public only if the community is public
+pub(crate) fn generate_to(community: &Community) -> LemmyResult<Url> {
+  if community.visibility == CommunityVisibility::Public {
+    Ok(public())
+  } else {
+    Ok(Url::parse(&format!("{}/followers", community.actor_id))?)
+  }
+}
+
 pub(crate) fn verify_community_matches<T>(a: &ObjectId<ApubCommunity>, b: T) -> LemmyResult<()>
 where
   T: Into<ObjectId<ApubCommunity>>,
@@ -367,6 +391,12 @@ pub async fn match_outgoing_activities(
         community,
         reason,
       } => Report::send(ObjectId::from(object_id), actor, community, reason, context).await,
+      AcceptFollower(community_id, person_id) => {
+        send_accept_or_reject_follow(community_id, person_id, true, &context).await
+      }
+      RejectFollower(community_id, person_id) => {
+        send_accept_or_reject_follow(community_id, person_id, false, &context).await
+      }
     }
   };
   fed_task.await?;

crates/apub/src/activity_lists.rs

@@ -17,7 +17,12 @@ use crate::{
         page::CreateOrUpdatePage,
       },
       deletion::{delete::Delete, undo_delete::UndoDelete},
-      following::{accept::AcceptFollow, follow::Follow, undo_follow::UndoFollow},
+      following::{
+        accept::AcceptFollow,
+        follow::Follow,
+        reject::RejectFollow,
+        undo_follow::UndoFollow,
+      },
       voting::{undo_vote::UndoVote, vote::Vote},
     },
     objects::page::Page,
@@ -41,6 +46,7 @@ use url::Url;
 pub enum SharedInboxActivities {
   Follow(Follow),
   AcceptFollow(AcceptFollow),
+  RejectFollow(RejectFollow),
   UndoFollow(UndoFollow),
   CreateOrUpdatePrivateMessage(CreateOrUpdateChatMessage),
   Report(Report),
@@ -68,6 +74,7 @@ pub enum GroupInboxActivities {
 pub enum PersonInboxActivities {
   Follow(Follow),
   AcceptFollow(AcceptFollow),
+  RejectFollow(RejectFollow),
   UndoFollow(UndoFollow),
   CreateOrUpdatePrivateMessage(CreateOrUpdateChatMessage),
   Delete(Delete),

crates/apub/src/api/user_settings_backup.rs

@@ -13,7 +13,7 @@ use lemmy_db_schema::{
   newtypes::DbUrl,
   source::{
     comment::{CommentSaved, CommentSavedForm},
-    community::{CommunityFollower, CommunityFollowerForm},
+    community::{CommunityFollower, CommunityFollowerForm, CommunityFollowerState},
     community_block::{CommunityBlock, CommunityBlockForm},
     instance::Instance,
     instance_block::{InstanceBlock, InstanceBlockForm},
@@ -186,9 +186,8 @@ pub async fn import_settings(
       |(followed, context)| async move {
         let community = followed.dereference(&context).await?;
         let form = CommunityFollowerForm {
-          person_id,
-          community_id: community.id,
-          pending: true,
+          state: Some(CommunityFollowerState::Pending),
+          ..CommunityFollowerForm::new(community.id, person_id)
         };
         CommunityFollower::follow(&mut context.pool(), &form).await?;
         LemmyResult::Ok(())
@@ -319,7 +318,13 @@ pub(crate) mod tests {
   use lemmy_api_common::context::LemmyContext;
   use lemmy_db_schema::{
     source::{
-      community::{Community, CommunityFollower, CommunityFollowerForm, CommunityInsertForm},
+      community::{
+        Community,
+        CommunityFollower,
+        CommunityFollowerForm,
+        CommunityFollowerState,
+        CommunityInsertForm,
+      },
       local_user::LocalUser,
     },
     traits::{Crud, Followable},
@@ -327,7 +332,6 @@ pub(crate) mod tests {
   use lemmy_db_views::structs::LocalUserView;
   use lemmy_db_views_actor::structs::CommunityFollowerView;
   use lemmy_utils::error::{LemmyErrorType, LemmyResult};
-  use pretty_assertions::assert_eq;
   use serial_test::serial;
   use std::time::Duration;
   use tokio::time::sleep;
@@ -348,9 +352,8 @@ pub(crate) mod tests {
     );
     let community = Community::create(pool, &community_form).await?;
     let follower_form = CommunityFollowerForm {
-      community_id: community.id,
-      person_id: export_user.person.id,
-      pending: false,
+      state: Some(CommunityFollowerState::Accepted),
+      ..CommunityFollowerForm::new(community.id, export_user.person.id)
     };
     CommunityFollower::follow(pool, &follower_form).await?;
 

crates/apub/src/fetcher/site_or_community_or_user.rs

@@ -9,6 +9,7 @@ use activitypub_federation::{
 };
 use chrono::{DateTime, Utc};
 use lemmy_api_common::context::LemmyContext;
+use lemmy_db_schema::newtypes::InstanceId;
 use lemmy_utils::error::{LemmyError, LemmyResult};
 use reqwest::Url;
 use serde::{Deserialize, Serialize};
@@ -127,3 +128,13 @@ impl Actor for SiteOrCommunityOrUser {
     }
   }
 }
+
+impl SiteOrCommunityOrUser {
+  pub fn instance_id(&self) -> InstanceId {
+    match self {
+      SiteOrCommunityOrUser::Site(s) => s.instance_id,
+      SiteOrCommunityOrUser::UserOrCommunity(UserOrCommunity::User(u)) => u.instance_id,
+      SiteOrCommunityOrUser::UserOrCommunity(UserOrCommunity::Community(c)) => c.instance_id,
+    }
+  }
+}

crates/apub/src/http/comment.rs

@@ -1,14 +1,10 @@
+use super::check_community_content_fetchable;
 use crate::{
-  http::{
-    check_community_public,
-    create_apub_response,
-    create_apub_tombstone_response,
-    redirect_remote_object,
-  },
+  http::{create_apub_response, create_apub_tombstone_response, redirect_remote_object},
   objects::comment::ApubComment,
 };
 use activitypub_federation::{config::Data, traits::Object};
-use actix_web::{web::Path, HttpResponse};
+use actix_web::{web::Path, HttpRequest, HttpResponse};
 use lemmy_api_common::context::LemmyContext;
 use lemmy_db_schema::{
   newtypes::CommentId,
@@ -28,13 +24,14 @@ pub(crate) struct CommentQuery {
 pub(crate) async fn get_apub_comment(
   info: Path<CommentQuery>,
   context: Data<LemmyContext>,
+  request: HttpRequest,
 ) -> LemmyResult<HttpResponse> {
   let id = CommentId(info.comment_id.parse::<i32>()?);
   // Can't use CommentView here because it excludes deleted/removed/local-only items
   let comment: ApubComment = Comment::read(&mut context.pool(), id).await?.into();
   let post = Post::read(&mut context.pool(), comment.post_id).await?;
   let community = Community::read(&mut context.pool(), post.community_id).await?;
-  check_community_public(&community)?;
+  check_community_content_fetchable(&community, &request, &context).await?;
 
   if !comment.local {
     Ok(redirect_remote_object(&comment.ap_id))

crates/apub/src/http/community.rs

@@ -1,3 +1,4 @@
+use super::check_community_content_fetchable;
 use crate::{
   collections::{
     community_featured::ApubCommunityFeatured,
@@ -5,14 +6,14 @@ use crate::{
     community_moderators::ApubCommunityModerators,
     community_outbox::ApubCommunityOutbox,
   },
-  http::{check_community_public, create_apub_response, create_apub_tombstone_response},
+  http::{check_community_fetchable, create_apub_response, create_apub_tombstone_response},
   objects::community::ApubCommunity,
 };
 use activitypub_federation::{
   config::Data,
   traits::{Collection, Object},
 };
-use actix_web::{web, HttpResponse};
+use actix_web::{web, HttpRequest, HttpResponse};
 use lemmy_api_common::context::LemmyContext;
 use lemmy_db_schema::{source::community::Community, traits::ApubActor};
 use lemmy_utils::error::{LemmyErrorType, LemmyResult};
@@ -38,7 +39,7 @@ pub(crate) async fn get_apub_community_http(
   if community.deleted || community.removed {
     return create_apub_tombstone_response(community.actor_id.clone());
   }
-  check_community_public(&community)?;
+  check_community_fetchable(&community)?;
 
   let apub = community.into_json(&context).await?;
   create_apub_response(&apub)
@@ -52,7 +53,7 @@ pub(crate) async fn get_apub_community_followers(
   let community = Community::read_from_name(&mut context.pool(), &info.community_name, false)
     .await?
     .ok_or(LemmyErrorType::NotFound)?;
-  check_community_public(&community)?;
+  check_community_fetchable(&community)?;
   let followers = ApubCommunityFollower::read_local(&community.into(), &context).await?;
   create_apub_response(&followers)
 }
@@ -62,13 +63,14 @@ pub(crate) async fn get_apub_community_followers(
 pub(crate) async fn get_apub_community_outbox(
   info: web::Path<CommunityQuery>,
   context: Data<LemmyContext>,
+  request: HttpRequest,
 ) -> LemmyResult<HttpResponse> {
   let community: ApubCommunity =
     Community::read_from_name(&mut context.pool(), &info.community_name, false)
       .await?
       .ok_or(LemmyErrorType::NotFound)?
       .into();
-  check_community_public(&community)?;
+  check_community_content_fetchable(&community, &request, &context).await?;
   let outbox = ApubCommunityOutbox::read_local(&community, &context).await?;
   create_apub_response(&outbox)
 }
@@ -83,7 +85,7 @@ pub(crate) async fn get_apub_community_moderators(
       .await?
       .ok_or(LemmyErrorType::NotFound)?
       .into();
-  check_community_public(&community)?;
+  check_community_fetchable(&community)?;
   let moderators = ApubCommunityModerators::read_local(&community, &context).await?;
   create_apub_response(&moderators)
 }
@@ -92,13 +94,14 @@ pub(crate) async fn get_apub_community_moderators(
 pub(crate) async fn get_apub_community_featured(
   info: web::Path<CommunityQuery>,
   context: Data<LemmyContext>,
+  request: HttpRequest,
 ) -> LemmyResult<HttpResponse> {
   let community: ApubCommunity =
     Community::read_from_name(&mut context.pool(), &info.community_name, false)
       .await?
       .ok_or(LemmyErrorType::NotFound)?
       .into();
-  check_community_public(&community)?;
+  check_community_content_fetchable(&community, &request, &context).await?;
   let featured = ApubCommunityFeatured::read_local(&community, &context).await?;
   create_apub_response(&featured)
 }
@@ -108,7 +111,7 @@ pub(crate) mod tests {
 
   use super::*;
   use crate::protocol::objects::{group::Group, tombstone::Tombstone};
-  use actix_web::body::to_bytes;
+  use actix_web::{body::to_bytes, test::TestRequest};
   use lemmy_db_schema::{
     newtypes::InstanceId,
     source::{
@@ -175,6 +178,7 @@ pub(crate) mod tests {
   async fn test_get_community() -> LemmyResult<()> {
     let context = LemmyContext::init_test_context().await;
     let (instance, community) = init(false, CommunityVisibility::Public, &context).await?;
+    let request = TestRequest::default().to_http_request();
 
     // fetch invalid community
     let query = CommunityQuery {
@@ -194,8 +198,12 @@ pub(crate) mod tests {
     let group = community.clone().into_json(&context).await?;
     assert_eq!(group, res_group);
 
-    let res =
-      get_apub_community_featured(query.clone().into(), context.reset_request_count()).await?;
+    let res = get_apub_community_featured(
+      query.clone().into(),
+      context.reset_request_count(),
+      request.clone(),
+    )
+    .await?;
     assert_eq!(200, res.status());
     let res =
       get_apub_community_followers(query.clone().into(), context.reset_request_count()).await?;
@@ -203,7 +211,8 @@ pub(crate) mod tests {
     let res =
       get_apub_community_moderators(query.clone().into(), context.reset_request_count()).await?;
     assert_eq!(200, res.status());
-    let res = get_apub_community_outbox(query.into(), context.reset_request_count()).await?;
+    let res =
+      get_apub_community_outbox(query.into(), context.reset_request_count(), request).await?;
     assert_eq!(200, res.status());
 
     Instance::delete(&mut context.pool(), instance.id).await?;
@@ -215,6 +224,7 @@ pub(crate) mod tests {
   async fn test_get_deleted_community() -> LemmyResult<()> {
     let context = LemmyContext::init_test_context().await;
     let (instance, community) = init(true, CommunityVisibility::LocalOnly, &context).await?;
+    let request = TestRequest::default().to_http_request();
 
     // should return tombstone
     let query = CommunityQuery {
@@ -225,8 +235,12 @@ pub(crate) mod tests {
     let res_tombstone = decode_response::<Tombstone>(res).await;
     assert!(res_tombstone.is_ok());
 
-    let res =
-      get_apub_community_featured(query.clone().into(), context.reset_request_count()).await;
+    let res = get_apub_community_featured(
+      query.clone().into(),
+      context.reset_request_count(),
+      request.clone(),
+    )
+    .await;
     assert!(res.is_err());
     let res =
       get_apub_community_followers(query.clone().into(), context.reset_request_count()).await;
@@ -234,7 +248,7 @@ pub(crate) mod tests {
     let res =
       get_apub_community_moderators(query.clone().into(), context.reset_request_count()).await;
     assert!(res.is_err());
-    let res = get_apub_community_outbox(query.into(), context.reset_request_count()).await;
+    let res = get_apub_community_outbox(query.into(), context.reset_request_count(), request).await;
     assert!(res.is_err());
 
     //Community::delete(&mut context.pool(), community.id).await?;
@@ -247,14 +261,19 @@ pub(crate) mod tests {
   async fn test_get_local_only_community() -> LemmyResult<()> {
     let context = LemmyContext::init_test_context().await;
     let (instance, community) = init(false, CommunityVisibility::LocalOnly, &context).await?;
+    let request = TestRequest::default().to_http_request();
 
     let query = CommunityQuery {
       community_name: community.name.clone(),
     };
     let res = get_apub_community_http(query.clone().into(), context.reset_request_count()).await;
     assert!(res.is_err());
-    let res =
-      get_apub_community_featured(query.clone().into(), context.reset_request_count()).await;
+    let res = get_apub_community_featured(
+      query.clone().into(),
+      context.reset_request_count(),
+      request.clone(),
+    )
+    .await;
     assert!(res.is_err());
     let res =
       get_apub_community_followers(query.clone().into(), context.reset_request_count()).await;
@@ -262,7 +281,7 @@ pub(crate) mod tests {
     let res =
       get_apub_community_moderators(query.clone().into(), context.reset_request_count()).await;
     assert!(res.is_err());
-    let res = get_apub_community_outbox(query.into(), context.reset_request_count()).await;
+    let res = get_apub_community_outbox(query.into(), context.reset_request_count(), request).await;
     assert!(res.is_err());
 
     Instance::delete(&mut context.pool(), instance.id).await?;

crates/apub/src/http/mod.rs

@@ -1,11 +1,11 @@
 use crate::{
   activity_lists::SharedInboxActivities,
-  fetcher::user_or_community::UserOrCommunity,
+  fetcher::{site_or_community_or_user::SiteOrCommunityOrUser, user_or_community::UserOrCommunity},
   protocol::objects::tombstone::Tombstone,
   FEDERATION_CONTEXT,
 };
 use activitypub_federation::{
-  actix_web::inbox::receive_activity,
+  actix_web::{inbox::receive_activity, signing_actor},
   config::Data,
   protocol::context::WithContext,
   FEDERATION_CONTENT_TYPE,
@@ -17,6 +17,7 @@ use lemmy_db_schema::{
   source::{activity::SentActivity, community::Community},
   CommunityVisibility,
 };
+use lemmy_db_views_actor::structs::CommunityFollowerView;
 use lemmy_utils::error::{FederationError, LemmyErrorType, LemmyResult};
 use serde::{Deserialize, Serialize};
 use std::{ops::Deref, time::Duration};
@@ -119,12 +120,46 @@ pub(crate) async fn get_activity(
 }
 
 /// Ensure that the community is public and not removed/deleted.
-fn check_community_public(community: &Community) -> LemmyResult<()> {
-  if community.deleted || community.removed {
-    Err(LemmyErrorType::Deleted)?
-  }
-  if community.visibility != CommunityVisibility::Public {
+fn check_community_fetchable(community: &Community) -> LemmyResult<()> {
+  check_community_removed_or_deleted(community)?;
+  if community.visibility == CommunityVisibility::LocalOnly {
     return Err(LemmyErrorType::NotFound.into());
   }
   Ok(())
 }
+
+/// Check if posts or comments in the community are allowed to be fetched
+async fn check_community_content_fetchable(
+  community: &Community,
+  request: &HttpRequest,
+  context: &Data<LemmyContext>,
+) -> LemmyResult<()> {
+  use CommunityVisibility::*;
+  check_community_removed_or_deleted(community)?;
+  match community.visibility {
+    // content in public community can always be fetched
+    Public => Ok(()),
+    // no federation for local only community
+    LocalOnly => Err(LemmyErrorType::NotFound.into()),
+    // for private community check http signature of request, if there is any approved follower
+    // from the fetching instance then fetching is allowed
+    Private => {
+      let signing_actor = signing_actor::<SiteOrCommunityOrUser>(request, None, context).await?;
+      Ok(
+        CommunityFollowerView::check_has_followers_from_instance(
+          community.id,
+          signing_actor.instance_id(),
+          &mut context.pool(),
+        )
+        .await?,
+      )
+    }
+  }
+}
+
+fn check_community_removed_or_deleted(community: &Community) -> LemmyResult<()> {
+  if community.deleted || community.removed {
+    Err(LemmyErrorType::Deleted)?
+  }
+  Ok(())
+}

crates/apub/src/http/post.rs

@@ -1,14 +1,10 @@
+use super::check_community_content_fetchable;
 use crate::{
-  http::{
-    check_community_public,
-    create_apub_response,
-    create_apub_tombstone_response,
-    redirect_remote_object,
-  },
+  http::{create_apub_response, create_apub_tombstone_response, redirect_remote_object},
   objects::post::ApubPost,
 };
 use activitypub_federation::{config::Data, traits::Object};
-use actix_web::{web, HttpResponse};
+use actix_web::{web, HttpRequest, HttpResponse};
 use lemmy_api_common::context::LemmyContext;
 use lemmy_db_schema::{
   newtypes::PostId,
@@ -28,12 +24,14 @@ pub(crate) struct PostQuery {
 pub(crate) async fn get_apub_post(
   info: web::Path<PostQuery>,
   context: Data<LemmyContext>,
+  request: HttpRequest,
 ) -> LemmyResult<HttpResponse> {
   let id = PostId(info.post_id.parse::<i32>()?);
   // Can't use PostView here because it excludes deleted/removed/local-only items
   let post: ApubPost = Post::read(&mut context.pool(), id).await?.into();
   let community = Community::read(&mut context.pool(), post.community_id).await?;
-  check_community_public(&community)?;
+
+  check_community_content_fetchable(&community, &request, &context).await?;
 
   if !post.local {
     Ok(redirect_remote_object(&post.ap_id))

crates/apub/src/objects/comment.rs

@@ -1,5 +1,5 @@
 use crate::{
-  activities::{verify_is_public, verify_person_in_community},
+  activities::{generate_to, verify_person_in_community, verify_visibility},
   check_apub_id_valid_with_strictness,
   fetcher::markdown_links::markdown_rewrite_remote_links,
   mentions::collect_non_local_mentions,
@@ -12,7 +12,7 @@ use crate::{
 };
 use activitypub_federation::{
   config::Data,
-  kinds::{object::NoteType, public},
+  kinds::object::NoteType,
   protocol::{values::MediaTypeMarkdownOrHtml, verification::verify_domains_match},
   traits::Object,
 };
@@ -112,7 +112,7 @@ impl Object for ApubComment {
       r#type: NoteType::Note,
       id: self.ap_id.clone().into(),
       attributed_to: creator.actor_id.into(),
-      to: vec![public()],
+      to: vec![generate_to(&community)?],
       cc: maa.ccs,
       content: markdown_to_html(&self.content),
       media_type: Some(MediaTypeMarkdownOrHtml::Html),
@@ -140,8 +140,8 @@ impl Object for ApubComment {
   ) -> LemmyResult<()> {
     verify_domains_match(note.id.inner(), expected_domain)?;
     verify_domains_match(note.attributed_to.inner(), note.id.inner())?;
-    verify_is_public(&note.to, &note.cc)?;
     let community = Box::pin(note.community(context)).await?;
+    verify_visibility(&note.to, &note.cc, &community)?;
 
     Box::pin(check_apub_id_valid_with_strictness(
       note.id.inner(),

crates/apub/src/objects/community.rs

@@ -39,6 +39,7 @@ use lemmy_db_schema::{
   },
   traits::{ApubActor, Crud},
   utils::naive_now,
+  CommunityVisibility,
 };
 use lemmy_db_views_actor::structs::CommunityFollowerView;
 use lemmy_utils::{
@@ -126,6 +127,7 @@ impl Object for ApubCommunity {
       updated: self.updated,
       posting_restricted_to_mods: Some(self.posting_restricted_to_mods),
       attributed_to: Some(generate_moderators_url(&self.actor_id)?.into()),
+      manually_approves_followers: Some(self.visibility == CommunityVisibility::Private),
     };
     Ok(group)
   }
@@ -152,7 +154,11 @@ impl Object for ApubCommunity {
     let sidebar = markdown_rewrite_remote_links_opt(sidebar, context).await;
     let icon = proxy_image_link_opt_apub(group.icon.map(|i| i.url), context).await?;
     let banner = proxy_image_link_opt_apub(group.image.map(|i| i.url), context).await?;
-
+    let visibility = Some(if group.manually_approves_followers.unwrap_or_default() {
+      CommunityVisibility::Private
+    } else {
+      CommunityVisibility::Public
+    });
     let form = CommunityInsertForm {
       published: group.published,
       updated: group.updated,
@@ -176,6 +182,7 @@ impl Object for ApubCommunity {
       moderators_url: group.attributed_to.clone().map(Into::into),
       posting_restricted_to_mods: group.posting_restricted_to_mods,
       featured_url: group.featured.clone().map(Into::into),
+      visibility,
       ..CommunityInsertForm::new(
         instance_id,
         group.preferred_username.clone(),

crates/apub/src/objects/post.rs

@@ -1,5 +1,5 @@
 use crate::{
-  activities::{verify_is_public, verify_person_in_community},
+  activities::{generate_to, verify_person_in_community, verify_visibility},
   check_apub_id_valid_with_strictness,
   fetcher::markdown_links::{markdown_rewrite_remote_links_opt, to_local_url},
   local_site_data_cached,
@@ -16,7 +16,6 @@ use crate::{
 };
 use activitypub_federation::{
   config::Data,
-  kinds::public,
   protocol::{values::MediaTypeMarkdownOrHtml, verification::verify_domains_match},
   traits::Object,
 };
@@ -135,7 +134,7 @@ impl Object for ApubPost {
       kind: PageType::Page,
       id: self.ap_id.clone().into(),
       attributed_to: AttributedTo::Lemmy(creator.actor_id.into()),
-      to: vec![community.actor_id.clone().into(), public()],
+      to: vec![generate_to(&community)?],
       cc: vec![],
       name: Some(self.name.clone()),
       content: self.body.as_ref().map(|b| markdown_to_html(b)),
@@ -172,7 +171,7 @@ impl Object for ApubPost {
     check_slurs_opt(&page.name, slur_regex)?;
 
     verify_domains_match(page.creator()?.inner(), page.id.inner())?;
-    verify_is_public(&page.to, &page.cc)?;
+    verify_visibility(&page.to, &page.cc, &community)?;
     Ok(())
   }
 

crates/apub/src/protocol/activities/following/mod.rs

@@ -1,5 +1,6 @@
 pub(crate) mod accept;
 pub mod follow;
+pub(crate) mod reject;
 pub mod undo_follow;
 
 #[cfg(test)]

crates/apub/src/protocol/activities/following/reject.rs

@@ -0,0 +1,24 @@
+use crate::{
+  objects::{community::ApubCommunity, person::ApubPerson},
+  protocol::activities::following::follow::Follow,
+};
+use activitypub_federation::{
+  fetch::object_id::ObjectId,
+  kinds::activity::RejectType,
+  protocol::helpers::deserialize_skip_error,
+};
+use serde::{Deserialize, Serialize};
+use url::Url;
+
+#[derive(Clone, Debug, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct RejectFollow {
+  pub(crate) actor: ObjectId<ApubCommunity>,
+  /// Optional, for compatibility with platforms that always expect recipient field
+  #[serde(deserialize_with = "deserialize_skip_error", default)]
+  pub(crate) to: Option<[ObjectId<ApubPerson>; 1]>,
+  pub(crate) object: Follow,
+  #[serde(rename = "type")]
+  pub(crate) kind: RejectType,
+  pub(crate) id: Url,
+}

crates/apub/src/protocol/objects/group.rs

@@ -73,6 +73,8 @@ pub struct Group {
   pub(crate) featured: Option<CollectionId<ApubCommunityFeatured>>,
   #[serde(default)]
   pub(crate) language: Vec<LanguageTag>,
+  /// True if this is a private community
+  pub(crate) manually_approves_followers: Option<bool>,
   pub(crate) published: Option<DateTime<Utc>>,
   pub(crate) updated: Option<DateTime<Utc>>,
 }

crates/db_perf/src/main.rs

@@ -54,7 +54,7 @@ async fn main() -> anyhow::Result<()> {
 
 async fn try_main() -> LemmyResult<()> {
   let args = CmdArgs::parse();
-  let pool = &build_db_pool().await?;
+  let pool = &build_db_pool()?;
   let pool = &mut pool.into();
   let conn = &mut get_conn(pool).await?;
 

crates/db_schema/src/aggregates/comment_aggregates.rs

@@ -51,7 +51,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_crud() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string()).await?;

crates/db_schema/src/aggregates/community_aggregates.rs

@@ -37,7 +37,13 @@ mod tests {
     aggregates::community_aggregates::CommunityAggregates,
     source::{
       comment::{Comment, CommentInsertForm},
-      community::{Community, CommunityFollower, CommunityFollowerForm, CommunityInsertForm},
+      community::{
+        Community,
+        CommunityFollower,
+        CommunityFollowerForm,
+        CommunityFollowerState,
+        CommunityInsertForm,
+      },
       instance::Instance,
       person::{Person, PersonInsertForm},
       post::{Post, PostInsertForm},
@@ -52,7 +58,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_crud() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string()).await?;
@@ -84,7 +90,8 @@ mod tests {
     let first_person_follow = CommunityFollowerForm {
       community_id: inserted_community.id,
       person_id: inserted_person.id,
-      pending: false,
+      state: Some(CommunityFollowerState::Accepted),
+      approver_id: None,
     };
 
     CommunityFollower::follow(pool, &first_person_follow).await?;
@@ -92,7 +99,8 @@ mod tests {
     let second_person_follow = CommunityFollowerForm {
       community_id: inserted_community.id,
       person_id: another_inserted_person.id,
-      pending: false,
+      state: Some(CommunityFollowerState::Accepted),
+      approver_id: None,
     };
 
     CommunityFollower::follow(pool, &second_person_follow).await?;
@@ -100,7 +108,8 @@ mod tests {
     let another_community_follow = CommunityFollowerForm {
       community_id: another_inserted_community.id,
       person_id: inserted_person.id,
-      pending: false,
+      state: Some(CommunityFollowerState::Accepted),
+      approver_id: None,
     };
 
     CommunityFollower::follow(pool, &another_community_follow).await?;

crates/db_schema/src/aggregates/person_aggregates.rs

@@ -36,7 +36,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_crud() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string()).await?;

crates/db_schema/src/aggregates/post_aggregates.rs

@@ -70,7 +70,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_crud() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string()).await?;
@@ -182,7 +182,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_soft_delete() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string()).await?;

crates/db_schema/src/aggregates/site_aggregates.rs

@@ -65,7 +65,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_crud() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let (inserted_instance, inserted_person, inserted_site, inserted_community) =
@@ -136,7 +136,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_soft_delete() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let (inserted_instance, inserted_person, inserted_site, inserted_community) =

crates/db_schema/src/impls/activity.rs

@@ -71,7 +71,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn receive_activity_duplicate() -> LemmyResult<()> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
     let ap_id: DbUrl = Url::parse("http://example.com/activity/531")?.into();
 
@@ -86,7 +86,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn sent_activity_write_read() -> LemmyResult<()> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
     let ap_id: DbUrl = Url::parse("http://example.com/activity/412")?.into();
     let data = json!({

crates/db_schema/src/impls/actor_language.rs

@@ -438,7 +438,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_convert_update_languages() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     // call with empty vec, returns all languages
@@ -457,7 +457,7 @@ mod tests {
   #[serial]
   async fn test_convert_read_languages() -> Result<(), Error> {
     use crate::schema::language::dsl::{id, language};
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     // call with all languages, returns empty vec
@@ -477,7 +477,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_site_languages() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let (site, instance) = create_test_site(pool).await?;
@@ -502,7 +502,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_user_languages() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let (site, instance) = create_test_site(pool).await?;
@@ -535,7 +535,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_community_languages() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
     let (site, instance) = create_test_site(pool).await?;
     let test_langs = test_langs1(pool).await?;
@@ -591,7 +591,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_default_post_language() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
     let (site, instance) = create_test_site(pool).await?;
     let test_langs = test_langs1(pool).await?;

crates/db_schema/src/impls/captcha_answer.rs

@@ -62,7 +62,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_captcha_happy_path() {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let inserted = CaptchaAnswer::insert(
@@ -89,7 +89,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_captcha_repeat_answer_fails() {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let inserted = CaptchaAnswer::insert(

crates/db_schema/src/impls/comment.rs

@@ -227,7 +227,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_crud() -> LemmyResult<()> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string()).await?;

crates/db_schema/src/impls/community.rs

@@ -15,6 +15,7 @@ use crate::{
       Community,
       CommunityFollower,
       CommunityFollowerForm,
+      CommunityFollowerState,
       CommunityInsertForm,
       CommunityModerator,
       CommunityModeratorForm,
@@ -324,22 +325,8 @@ impl Bannable for CommunityPersonBan {
 }
 
 impl CommunityFollower {
-  pub fn to_subscribed_type(follower: &Option<Self>) -> SubscribedType {
-    match follower {
-      Some(f) => {
-        if f.pending {
-          SubscribedType::Pending
-        } else {
-          SubscribedType::Subscribed
-        }
-      }
-      // If the row doesn't exist, the person isn't a follower.
-      None => SubscribedType::NotSubscribed,
-    }
-  }
-
-  pub fn select_subscribed_type() -> dsl::Nullable<community_follower::pending> {
-    community_follower::pending.nullable()
+  pub fn select_subscribed_type() -> dsl::Nullable<community_follower::state> {
+    community_follower::state.nullable()
   }
 
   /// Check if a remote instance has any followers on local instance. For this it is enough to check
@@ -357,14 +344,34 @@ impl CommunityFollower {
     .then_some(())
     .ok_or(LemmyErrorType::CommunityHasNoFollowers.into())
   }
+
+  pub async fn approve(
+    pool: &mut DbPool<'_>,
+    community_id: CommunityId,
+    follower_id: PersonId,
+    approver_id: PersonId,
+  ) -> LemmyResult<()> {
+    let conn = &mut get_conn(pool).await?;
+    diesel::update(community_follower::table.find((follower_id, community_id)))
+      .set((
+        community_follower::state.eq(CommunityFollowerState::Accepted),
+        community_follower::approver_id.eq(approver_id),
+      ))
+      .get_result::<Self>(conn)
+      .await?;
+    Ok(())
+  }
 }
 
-impl Queryable<sql_types::Nullable<sql_types::Bool>, Pg> for SubscribedType {
-  type Row = Option<bool>;
+impl Queryable<sql_types::Nullable<crate::schema::sql_types::CommunityFollowerState>, Pg>
+  for SubscribedType
+{
+  type Row = Option<CommunityFollowerState>;
   fn build(row: Self::Row) -> deserialize::Result<Self> {
     Ok(match row {
-      Some(true) => SubscribedType::Pending,
-      Some(false) => SubscribedType::Subscribed,
+      Some(CommunityFollowerState::Pending) => SubscribedType::Pending,
+      Some(CommunityFollowerState::Accepted) => SubscribedType::Subscribed,
+      Some(CommunityFollowerState::ApprovalRequired) => SubscribedType::ApprovalRequired,
       None => SubscribedType::NotSubscribed,
     })
   }
@@ -393,7 +400,7 @@ impl Followable for CommunityFollower {
   ) -> Result<Self, Error> {
     let conn = &mut get_conn(pool).await?;
     diesel::update(community_follower::table.find((person_id, community_id)))
-      .set(community_follower::pending.eq(false))
+      .set(community_follower::state.eq(CommunityFollowerState::Accepted))
       .get_result::<Self>(conn)
       .await
   }
@@ -463,6 +470,7 @@ mod tests {
         Community,
         CommunityFollower,
         CommunityFollowerForm,
+        CommunityFollowerState,
         CommunityInsertForm,
         CommunityModerator,
         CommunityModeratorForm,
@@ -485,7 +493,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_crud() -> LemmyResult<()> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string()).await?;
@@ -535,7 +543,8 @@ mod tests {
     let community_follower_form = CommunityFollowerForm {
       community_id: inserted_community.id,
       person_id: inserted_bobby.id,
-      pending: false,
+      state: Some(CommunityFollowerState::Accepted),
+      approver_id: None,
     };
 
     let inserted_community_follower =
@@ -544,8 +553,9 @@ mod tests {
     let expected_community_follower = CommunityFollower {
       community_id: inserted_community.id,
       person_id: inserted_bobby.id,
-      pending: false,
+      state: CommunityFollowerState::Accepted,
       published: inserted_community_follower.published,
+      approver_id: None,
     };
 
     let bobby_moderator_form = CommunityModeratorForm {

crates/db_schema/src/impls/federation_allowlist.rs

@@ -61,7 +61,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_allowlist_insert_and_clear() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
     let domains = vec![
       "tld1.xyz".to_string(),

crates/db_schema/src/impls/language.rs

@@ -46,7 +46,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_languages() -> Result<(), Error> {
-    let pool = &build_db_pool_for_tests().await;
+    let pool = &build_db_pool_for_tests();
     let pool = &mut pool.into();
 
     let all = Language::read_all(pool).await?;