mirror of
https://git.joinsharkey.org/Sharkey/Sharkey.git
synced 2024-11-05 08:53:08 +02:00
some validation fixes
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parent
58bc8f2c10
commit
074de82bf7
7 changed files with 72 additions and 14 deletions
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@ -15,6 +15,7 @@ import type { Config } from '@/config.js';
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import { StatusError } from '@/misc/status-error.js';
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import { bindThis } from '@/decorators.js';
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import { validateContentTypeSetAsActivityPub } from '@/core/activitypub/misc/validator.js';
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import { assertActivityMatchesUrls } from '@/core/activitypub/misc/check-against-url.js';
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import type { IObject } from '@/core/activitypub/type.js';
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import type { Response } from 'node-fetch';
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import type { URL } from 'node:url';
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@ -125,7 +126,12 @@ export class HttpRequestService {
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validators: [validateContentTypeSetAsActivityPub],
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});
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return await res.json() as IObject;
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const finalUrl = res.url; // redirects may have been involved
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const activity = await res.json() as IObject;
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assertActivityMatchesUrls(activity, [url, finalUrl]);
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return activity;
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}
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@bindThis
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@ -86,7 +86,7 @@ export class UtilityService {
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@bindThis
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public extractDbHost(uri: string): string {
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const url = new URL(uri);
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return this.toPuny(url.hostname);
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return this.toPuny(url.host);
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}
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@bindThis
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@ -99,4 +99,11 @@ export class UtilityService {
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if (host == null) return null;
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return toASCII(host.toLowerCase());
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}
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@bindThis
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public punyHost(url: string): string {
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const urlObj = new URL(url);
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const host = `${this.toPuny(urlObj.hostname)}${urlObj.port.length > 0 ? ':' + urlObj.port : ''}`;
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return host;
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}
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}
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@ -14,7 +14,9 @@ import { HttpRequestService } from '@/core/HttpRequestService.js';
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import { LoggerService } from '@/core/LoggerService.js';
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import { bindThis } from '@/decorators.js';
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import type Logger from '@/logger.js';
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import type { IObject } from './type.js';
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import { validateContentTypeSetAsActivityPub } from '@/core/activitypub/misc/validator.js';
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import { assertActivityMatchesUrls } from '@/core/activitypub/misc/check-against-url.js';
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type Request = {
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url: string;
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@ -201,6 +203,11 @@ export class ApRequestService {
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validators: [validateContentTypeSetAsActivityPub],
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});
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return await res.json();
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const finalUrl = res.url; // redirects may have been involved
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const activity = await res.json() as IObject;
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assertActivityMatchesUrls(activity, [url, finalUrl]);
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return activity;
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}
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}
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@ -115,6 +115,14 @@ export class Resolver {
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throw new Error('invalid response');
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}
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// HttpRequestService / ApRequestService have already checked that
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// `object.id` or `object.url` matches the URL used to fetch the
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// object after redirects; here we double-check that no redirects
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// bounced between hosts
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if (object.id && (this.utilityService.punyHost(object.id) !== this.utilityService.punyHost(value))) {
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throw new Error(`invalid AP object ${value}: id ${object.id} has different host`);
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}
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return object;
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}
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@ -0,0 +1,19 @@
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/*
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* SPDX-FileCopyrightText: dakkar and sharkey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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import type { IObject } from '../type.js';
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export function assertActivityMatchesUrls(activity: IObject, urls: string[]) {
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const idOk = activity.id !== undefined && urls.includes(activity.id);
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// technically `activity.url` could be an `ApObject = IObject |
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// string | (IObject | string)[]`, but if it's a complicated thing
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// and the `activity.id` doesn't match, I think we're fine
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// rejecting the activity
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const urlOk = typeof(activity.url) === 'string' && urls.includes(activity.url);
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if (!idOk && !urlOk) {
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throw new Error(`bad Activity: neither id(${activity?.id}) nor url(${activity?.url}) match location(${urls})`);
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}
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}
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@ -127,12 +127,6 @@ export class ApPersonService implements OnModuleInit {
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this.logger = this.apLoggerService.logger;
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}
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private punyHost(url: string): string {
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const urlObj = new URL(url);
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const host = `${this.utilityService.toPuny(urlObj.hostname)}${urlObj.port.length > 0 ? ':' + urlObj.port : ''}`;
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return host;
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}
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/**
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* Validate and convert to actor object
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* @param x Fetched object
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@ -140,7 +134,7 @@ export class ApPersonService implements OnModuleInit {
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*/
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@bindThis
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private validateActor(x: IObject, uri: string): IActor {
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const expectHost = this.punyHost(uri);
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const expectHost = this.utilityService.punyHost(uri);
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if (!isActor(x)) {
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throw new Error(`invalid Actor type '${x.type}'`);
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@ -154,6 +148,19 @@ export class ApPersonService implements OnModuleInit {
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throw new Error('invalid Actor: wrong inbox');
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}
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if (this.utilityService.punyHost(x.inbox) !== expectHost) {
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throw new Error('invalid Actor: inbox has different host');
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}
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for (const collection of ['outbox', 'followers', 'following'] as (keyof IActor)[]) {
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const collectionUri = (x as IActor)[collection];
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if (typeof collectionUri === 'string' && collectionUri.length > 0) {
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if (this.utilityService.punyHost(collectionUri) !== expectHost) {
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throw new Error(`invalid Actor: ${collection} has different host`);
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}
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}
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}
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if (!(typeof x.preferredUsername === 'string' && x.preferredUsername.length > 0 && x.preferredUsername.length <= 128 && /^\w([\w-.]*\w)?$/.test(x.preferredUsername))) {
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throw new Error('invalid Actor: wrong username');
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}
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@ -177,7 +184,7 @@ export class ApPersonService implements OnModuleInit {
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x.summary = truncate(x.summary, summaryLength);
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}
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const idHost = this.punyHost(x.id);
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const idHost = this.utilityService.punyHost(x.id);
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if (idHost !== expectHost) {
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throw new Error('invalid Actor: id has different host');
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}
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@ -187,7 +194,7 @@ export class ApPersonService implements OnModuleInit {
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throw new Error('invalid Actor: publicKey.id is not a string');
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}
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const publicKeyIdHost = this.punyHost(x.publicKey.id);
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const publicKeyIdHost = this.utilityService.punyHost(x.publicKey.id);
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if (publicKeyIdHost !== expectHost) {
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throw new Error('invalid Actor: publicKey.id has different host');
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}
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@ -286,7 +293,7 @@ export class ApPersonService implements OnModuleInit {
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this.logger.info(`Creating the Person: ${person.id}`);
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const host = this.punyHost(object.id);
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const host = this.utilityService.punyHost(object.id);
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const fields = this.analyzeAttachments(person.attachment ?? []);
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@ -113,8 +113,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
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@bindThis
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private async fetchAny(uri: string, me: MiLocalUser | null | undefined): Promise<SchemaType<typeof meta['res']> | null> {
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// ブロックしてたら中断
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const host = this.utilityService.extractDbHost(uri);
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const fetchedMeta = await this.metaService.fetch();
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if (this.utilityService.isBlockedHost(fetchedMeta.blockedHosts, this.utilityService.extractDbHost(uri))) return null;
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if (this.utilityService.isBlockedHost(fetchedMeta.blockedHosts, host)) return null;
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let local = await this.mergePack(me, ...await Promise.all([
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this.apDbResolverService.getUserFromApId(uri),
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@ -122,6 +123,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
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]));
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if (local != null) return local;
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// local object, not found in db? fail
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if (this.utilityService.isSelfHost(host)) return null;
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// リモートから一旦オブジェクトフェッチ
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const resolver = this.apResolverService.createResolver();
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const object = await resolver.resolve(uri) as any;
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