なんかもうめっちゃ変えた

packages/backend/src/queue/processors/InboxProcessorService.ts

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+import { URL } from 'node:url';
+import { Inject, Injectable } from '@nestjs/common';
+import { MoreThan } from 'typeorm';
+import httpSignature from '@peertube/http-signature';
+import { DI } from '@/di-symbols.js';
+import { DriveFilesRepository } from '@/models/index.js';
+import { Config } from '@/config.js';
+import type Logger from '@/logger.js';
+import { MetaService } from '@/core/MetaService.js';
+import { ApRequestService } from '@/core/remote/activitypub/ApRequestService.js';
+import { FederatedInstanceService } from '@/core/FederatedInstanceService.js';
+import { FetchInstanceMetadataService } from '@/core/FetchInstanceMetadataService.js';
+import { Cache } from '@/misc/cache.js';
+import type { Instance } from '@/models/entities/Instance.js';
+import InstanceChart from '@/core/chart/charts/instance.js';
+import ApRequestChart from '@/core/chart/charts/ap-request.js';
+import FederationChart from '@/core/chart/charts/federation.js';
+import { getApId } from '@/core/remote/activitypub/type.js';
+import type { CacheableRemoteUser } from '@/models/entities/User.js';
+import type { UserPublickey } from '@/models/entities/UserPublickey.js';
+import { ApDbResolverService } from '@/core/remote/activitypub/ApDbResolverService.js';
+import { StatusError } from '@/misc/status-error.js';
+import { UtilityService } from '@/core/UtilityService.js';
+import { ApPersonService } from '@/core/remote/activitypub/models/ApPersonService.js';
+import { LdSignatureService } from '@/core/remote/activitypub/LdSignatureService.js';
+import { ApInboxService } from '@/core/remote/activitypub/ApInboxService.js';
+import { QueueLoggerService } from '../QueueLoggerService.js';
+import type Bull from 'bull';
+import type { DeliverJobData, InboxJobData } from '../types.js';
+
+// ユーザーのinboxにアクティビティが届いた時の処理
+@Injectable()
+export class InboxProcessorService {
+	#logger: Logger;
+
+	constructor(
+		@Inject(DI.config)
+		private config: Config,
+
+		@Inject(DI.instancesRepository)
+		private instancesRepository: InstancesRepository,
+
+		@Inject(DI.driveFilesRepository)
+		private driveFilesRepository: DriveFilesRepository,
+
+		private utilityService: UtilityService,
+		private metaService: MetaService,
+		private apInboxService: ApInboxService,
+		private federatedInstanceService: FederatedInstanceService,
+		private fetchInstanceMetadataService: FetchInstanceMetadataService,
+		private ldSignatureService: LdSignatureService,
+		private apRequestService: ApRequestService,
+		private apPersonService: ApPersonService,
+		private apDbResolverService: ApDbResolverService,
+		private instanceChart: InstanceChart,
+		private apRequestChart: ApRequestChart,
+		private federationChart: FederationChart,
+		private queueLoggerService: QueueLoggerService,
+	) {
+		this.#logger = this.queueLoggerService.logger.createSubLogger('inbox');
+	}
+
+	public async process(job: Bull.Job<InboxJobData>): Promise<string> {
+		const signature = job.data.signature;	// HTTP-signature
+		const activity = job.data.activity;
+
+		//#region Log
+		const info = Object.assign({}, activity) as any;
+		delete info['@context'];
+		this.#logger.debug(JSON.stringify(info, null, 2));
+		//#endregion
+
+		const host = this.utilityService.toPuny(new URL(signature.keyId).hostname);
+
+		// ブロックしてたら中断
+		const meta = await this.metaService.fetch();
+		if (meta.blockedHosts.includes(host)) {
+			return `Blocked request: ${host}`;
+		}
+
+		const keyIdLower = signature.keyId.toLowerCase();
+		if (keyIdLower.startsWith('acct:')) {
+			return `Old keyId is no longer supported. ${keyIdLower}`;
+		}
+
+		// HTTP-Signature keyIdを元にDBから取得
+		let authUser: {
+		user: CacheableRemoteUser;
+		key: UserPublickey | null;
+	} | null = await this.apDbResolverService.getAuthUserFromKeyId(signature.keyId);
+
+		// keyIdでわからなければ、activity.actorを元にDBから取得 || activity.actorを元にリモートから取得
+		if (authUser == null) {
+			try {
+				authUser = await this.apDbResolverService.getAuthUserFromApId(getApId(activity.actor));
+			} catch (err) {
+			// 対象が4xxならスキップ
+				if (err instanceof StatusError) {
+					if (err.isClientError) {
+						return `skip: Ignored deleted actors on both ends ${activity.actor} - ${err.statusCode}`;
+					}
+					throw `Error in actor ${activity.actor} - ${err.statusCode ?? err}`;
+				}
+			}
+		}
+
+		// それでもわからなければ終了
+		if (authUser == null) {
+			return 'skip: failed to resolve user';
+		}
+
+		// publicKey がなくても終了
+		if (authUser.key == null) {
+			return 'skip: failed to resolve user publicKey';
+		}
+
+		// HTTP-Signatureの検証
+		const httpSignatureValidated = httpSignature.verifySignature(signature, authUser.key.keyPem);
+
+		// また、signatureのsignerは、activity.actorと一致する必要がある
+		if (!httpSignatureValidated || authUser.user.uri !== activity.actor) {
+		// 一致しなくても、でもLD-Signatureがありそうならそっちも見る
+			if (activity.signature) {
+				if (activity.signature.type !== 'RsaSignature2017') {
+					return `skip: unsupported LD-signature type ${activity.signature.type}`;
+				}
+
+				// activity.signature.creator: https://example.oom/users/user#main-key
+				// みたいになっててUserを引っ張れば公開キーも入ることを期待する
+				if (activity.signature.creator) {
+					const candicate = activity.signature.creator.replace(/#.*/, '');
+					await this.apPersonService.resolvePerson(candicate).catch(() => null);
+				}
+
+				// keyIdからLD-Signatureのユーザーを取得
+				authUser = await this.apDbResolverService.getAuthUserFromKeyId(activity.signature.creator);
+				if (authUser == null) {
+					return 'skip: LD-Signatureのユーザーが取得できませんでした';
+				}
+
+				if (authUser.key == null) {
+					return 'skip: LD-SignatureのユーザーはpublicKeyを持っていませんでした';
+				}
+
+				// LD-Signature検証
+				const ldSignature = this.ldSignatureService.use();
+				const verified = await ldSignature.verifyRsaSignature2017(activity, authUser.key.keyPem).catch(() => false);
+				if (!verified) {
+					return 'skip: LD-Signatureの検証に失敗しました';
+				}
+
+				// もう一度actorチェック
+				if (authUser.user.uri !== activity.actor) {
+					return `skip: LD-Signature user(${authUser.user.uri}) !== activity.actor(${activity.actor})`;
+				}
+
+				// ブロックしてたら中断
+				const ldHost = this.utilityService.extractDbHost(authUser.user.uri);
+				if (meta.blockedHosts.includes(ldHost)) {
+					return `Blocked request: ${ldHost}`;
+				}
+			} else {
+				return `skip: http-signature verification failed and no LD-Signature. keyId=${signature.keyId}`;
+			}
+		}
+
+		// activity.idがあればホストが署名者のホストであることを確認する
+		if (typeof activity.id === 'string') {
+			const signerHost = this.utilityService.extractDbHost(authUser.user.uri!);
+			const activityIdHost = this.utilityService.extractDbHost(activity.id);
+			if (signerHost !== activityIdHost) {
+				return `skip: signerHost(${signerHost}) !== activity.id host(${activityIdHost}`;
+			}
+		}
+
+		// Update stats
+		this.federatedInstanceService.registerOrFetchInstanceDoc(authUser.user.host).then(i => {
+			this.instancesRepository.update(i.id, {
+				latestRequestReceivedAt: new Date(),
+				lastCommunicatedAt: new Date(),
+				isNotResponding: false,
+			});
+
+			this.fetchInstanceMetadataService.fetchInstanceMetadata(i);
+
+			this.instanceChart.requestReceived(i.host);
+			this.apRequestChart.inbox();
+			this.federationChart.inbox(i.host);
+		});
+
+		// アクティビティを処理
+		await this.apInboxService.performActivity(authUser.user, activity);
+		return 'ok';
+	}
+}