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/*
* 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 { IActivity } 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
let 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');
}
// アクティビティを正規化
delete activity.signature;
try {
activity = await ldSignature.compact(activity) as IActivity;
} catch (e) {
throw new Bull.UnrecoverableError(`skip: failed to compact activity: ${e}`);
}
// TODO: 元のアクティビティと非互換な形に正規化される場合は転送をスキップする
// https://github.com/mastodon/mastodon/blob/664b0ca/app/services/activitypub/process_collection_service.rb#L24-L29
activity.signature = ldSignature;
// もう一度actorチェック
if (authUser.user.uri !== activity.actor) {
throw new Bull.UnrecoverableError(`skip: LD-Signature user(${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';
}
}
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