hippofish/packages/backend/src/queue/processors/InboxProcessorService.ts
2024-03-02 16:36:49 +00:00

208 lines
8 KiB
TypeScript

/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { URL } from 'node:url';
import { Injectable } from '@nestjs/common';
import httpSignature from '@peertube/http-signature';
import * as Bull from 'bullmq';
import type Logger from '@/logger.js';
import { MetaService } from '@/core/MetaService.js';
import { FederatedInstanceService } from '@/core/FederatedInstanceService.js';
import { FetchInstanceMetadataService } from '@/core/FetchInstanceMetadataService.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/activitypub/type.js';
import type { MiRemoteUser } from '@/models/User.js';
import type { MiUserPublickey } from '@/models/UserPublickey.js';
import { ApDbResolverService } from '@/core/activitypub/ApDbResolverService.js';
import { StatusError } from '@/misc/status-error.js';
import { UtilityService } from '@/core/UtilityService.js';
import { ApPersonService } from '@/core/activitypub/models/ApPersonService.js';
import { LdSignatureService } from '@/core/activitypub/LdSignatureService.js';
import { ApInboxService } from '@/core/activitypub/ApInboxService.js';
import { bindThis } from '@/decorators.js';
import { IdentifiableError } from '@/misc/identifiable-error.js';
import { QueueLoggerService } from '../QueueLoggerService.js';
import type { InboxJobData } from '../types.js';
@Injectable()
export class InboxProcessorService {
private logger: Logger;
constructor(
private utilityService: UtilityService,
private metaService: MetaService,
private apInboxService: ApInboxService,
private federatedInstanceService: FederatedInstanceService,
private fetchInstanceMetadataService: FetchInstanceMetadataService,
private ldSignatureService: LdSignatureService,
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');
}
@bindThis
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);
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 (this.utilityService.isBlockedHost(meta.blockedHosts, 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: MiRemoteUser;
key: MiUserPublickey | 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.isRetryable) {
throw new Bull.UnrecoverableError(`skip: Ignored deleted actors on both ends ${activity.actor} - ${err.statusCode}`);
}
throw new Error(`Error in actor ${activity.actor} - ${err.statusCode}`);
}
}
}
// それでもわからなければ終了
if (authUser == null) {
throw new Bull.UnrecoverableError('skip: failed to resolve user');
}
// publicKey がなくても終了
if (authUser.key == null) {
throw new Bull.UnrecoverableError('skip: failed to resolve user publicKey');
}
// HTTP-Signatureの検証
let 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) {
let renewKeyFailed = true;
if (!httpSignatureValidated) {
authUser.key = await this.apDbResolverService.refetchPublicKeyForApId(authUser.user);
if (authUser.key != null) {
httpSignatureValidated = httpSignature.verifySignature(signature, authUser.key.keyPem);
renewKeyFailed = false;
}
}
// 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 && renewKeyFailed) {
if (activity.signature.type !== 'RsaSignature2017') {
throw new Bull.UnrecoverableError(`skip: unsupported LD-signature type ${activity.signature.type}`);
}
// activity.signature.creator: https://example.oom/users/user#main-key
// みたいになっててUserを引っ張れば公開キーも入ることを期待する
if (activity.signature.creator) {
const candicate = activity.signature.creator.replace(/#.*/, '');
await this.apPersonService.resolvePerson(candicate).catch(() => null);
}
// keyIdからLD-Signatureのユーザーを取得
authUser = await this.apDbResolverService.getAuthUserFromKeyId(activity.signature.creator);
if (authUser == null) {
throw new Bull.UnrecoverableError('skip: LD-Signatureのユーザーが取得できませんでした');
}
if (authUser.key == null) {
throw new Bull.UnrecoverableError('skip: LD-SignatureのユーザーはpublicKeyを持っていませんでした');
}
// LD-Signature検証
const ldSignature = this.ldSignatureService.use();
const verified = await ldSignature.verifyRsaSignature2017(activity, authUser.key.keyPem).catch(() => false);
if (!verified) {
throw new Bull.UnrecoverableError('skip: LD-Signatureの検証に失敗しました');
}
// もう一度actorチェック
if (authUser.user.uri !== activity.actor) {
throw new Bull.UnrecoverableError(`skip: LD-Signature user(${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 (this.utilityService.isBlockedHost(meta.blockedHosts, ldHost)) {
throw new Bull.UnrecoverableError(`Blocked request: ${ldHost}`);
}
} else {
throw new Bull.UnrecoverableError(`skip: http-signature verification failed and no LD-Signature. keyId=${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) {
throw new Bull.UnrecoverableError(`skip: signerHost(${signerHost}) !== activity.id host(${activityIdHost}`);
}
}
// Update stats
this.federatedInstanceService.fetch(authUser.user.host).then(i => {
this.federatedInstanceService.update(i.id, {
latestRequestReceivedAt: new Date(),
isNotResponding: false,
});
this.fetchInstanceMetadataService.fetchInstanceMetadata(i);
this.apRequestChart.inbox();
this.federationChart.inbox(i.host);
if (meta.enableChartsForFederatedInstances) {
this.instanceChart.requestReceived(i.host);
}
});
// アクティビティを処理
try {
await this.apInboxService.performActivity(authUser.user, activity);
} catch (e) {
if (e instanceof IdentifiableError) {
if (e.id === '689ee33f-f97c-479a-ac49-1b9f8140af99') {
return 'blocked notes with prohibited words';
}
if (e.id === '85ab9bd7-3a41-4530-959d-f07073900109') return 'actor has been suspended';
}
throw e;
}
return 'ok';
}
}