fix(backend): mostr.pub, Mitraのユーザーをフォローできない問題を修正 (#11791)

* fix(backend): mostr.pub, Mitraのユーザーをフォローできない問題を修正

* Revert "fix(backend): mostr.pub, Mitraのユーザーをフォローできない問題を修正"

This reverts commit 9685715e6470caffc2b0c7b991d55c5edf7fa0f1.

* fix ApResolverService

* Update CHANGELOG.md

* fix test

---------

Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>

2 files changed, 27 insertions, 9 deletions

diff --git a/packages/backend/src/core/activitypub/ApResolverService.ts b/packages/backend/src/core/activitypub/ApResolverService.ts
index 058869ca77..9ca63c9ec5 100644
--- a/packages/backend/src/core/activitypub/ApResolverService.ts
+++ b/packages/backend/src/core/activitypub/ApResolverService.ts
@@ -4,9 +4,10 @@
  */
 
 import { Inject, Injectable } from '@nestjs/common';
+import { IsNull, Not } from 'typeorm';
 import type { MiLocalUser, MiRemoteUser } from '@/models/User.js';
 import { InstanceActorService } from '@/core/InstanceActorService.js';
-import type { NotesRepository, PollsRepository, NoteReactionsRepository, UsersRepository } from '@/models/_.js';
+import type { NotesRepository, PollsRepository, NoteReactionsRepository, UsersRepository, FollowRequestsRepository } from '@/models/_.js';
 import type { Config } from '@/config.js';
 import { MetaService } from '@/core/MetaService.js';
 import { HttpRequestService } from '@/core/HttpRequestService.js';
@@ -32,6 +33,7 @@ export class Resolver {
 		private notesRepository: NotesRepository,
 		private pollsRepository: PollsRepository,
 		private noteReactionsRepository: NoteReactionsRepository,
+		private followRequestsRepository: FollowRequestsRepository,
 		private utilityService: UtilityService,
 		private instanceActorService: InstanceActorService,
 		private metaService: MetaService,
@@ -146,13 +148,24 @@ export class Resolver {
 				return this.noteReactionsRepository.findOneByOrFail({ id: parsed.id }).then(async reaction =>
 					this.apRendererService.addContext(await this.apRendererService.renderLike(reaction, { uri: null })));
 			case 'follows':
-				// rest should be <followee id>
-				if (parsed.rest == null || !/^\w+$/.test(parsed.rest)) throw new Error('resolveLocal: invalid follow URI');
-
-				return Promise.all(
-					[parsed.id, parsed.rest].map(id => this.usersRepository.findOneByOrFail({ id })),
-				)
-					.then(([follower, followee]) => this.apRendererService.addContext(this.apRendererService.renderFollow(follower as MiLocalUser | MiRemoteUser, followee as MiLocalUser | MiRemoteUser, url)));
+				return this.followRequestsRepository.findOneBy({ id: parsed.id })
+					.then(async followRequest => {
+						if (followRequest == null) throw new Error('resolveLocal: invalid follow request ID');
+						const [follower, followee] = await Promise.all([
+							this.usersRepository.findOneBy({
+								id: followRequest.followerId,
+								host: IsNull(),
+							}),
+							this.usersRepository.findOneBy({
+								id: followRequest.followeeId,
+								host: Not(IsNull()),
+							}),
+						]);
+						if (follower == null || followee == null) {
+							throw new Error('resolveLocal: follower or followee does not exist');
+						}
+						return this.apRendererService.addContext(this.apRendererService.renderFollow(follower as MiLocalUser | MiRemoteUser, followee as MiLocalUser | MiRemoteUser, url));
+					});
 			default:
 				throw new Error(`resolveLocal: type ${parsed.type} unhandled`);
 		}
@@ -177,6 +190,9 @@ export class ApResolverService {
 		@Inject(DI.noteReactionsRepository)
 		private noteReactionsRepository: NoteReactionsRepository,
 
+		@Inject(DI.followRequestsRepository)
+		private followRequestsRepository: FollowRequestsRepository,
+
 		private utilityService: UtilityService,
 		private instanceActorService: InstanceActorService,
 		private metaService: MetaService,
@@ -196,6 +212,7 @@ export class ApResolverService {
 			this.notesRepository,
 			this.pollsRepository,
 			this.noteReactionsRepository,
+			this.followRequestsRepository,
 			this.utilityService,
 			this.instanceActorService,
 			this.metaService,
diff --git a/packages/backend/test/misc/mock-resolver.ts b/packages/backend/test/misc/mock-resolver.ts
index 07abe515c3..7cba7a2aa8 100644
--- a/packages/backend/test/misc/mock-resolver.ts
+++ b/packages/backend/test/misc/mock-resolver.ts
@@ -15,7 +15,7 @@ import type { LoggerService } from '@/core/LoggerService.js';
 import type { MetaService } from '@/core/MetaService.js';
 import type { UtilityService } from '@/core/UtilityService.js';
 import { bindThis } from '@/decorators.js';
-import type { NoteReactionsRepository, NotesRepository, PollsRepository, UsersRepository } from '@/models/_.js';
+import type { NoteReactionsRepository, NotesRepository, PollsRepository, UsersRepository, FollowRequestsRepository } from '@/models/_.js';
 
 type MockResponse = {
 	type: string;
@@ -33,6 +33,7 @@ export class MockResolver extends Resolver {
 			{} as NotesRepository,
 			{} as PollsRepository,
 			{} as NoteReactionsRepository,
+			{} as FollowRequestsRepository,
 			{} as UtilityService,
 			{} as InstanceActorService,
 			{} as MetaService,