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upd: refetch user keys on signature failure
Reference: https://github.com/misskey-dev/misskey/pull/12051
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2 changed files with 28 additions and 3 deletions
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@ -12,7 +12,7 @@ import type { MiUserPublickey } from '@/models/UserPublickey.js';
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import { CacheService } from '@/core/CacheService.js';
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import type { MiNote } from '@/models/Note.js';
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import { bindThis } from '@/decorators.js';
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import { MiLocalUser, MiRemoteUser } from '@/models/User.js';
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import type { MiLocalUser, MiRemoteUser } from '@/models/User.js';
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import { getApId } from './type.js';
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import { ApPersonService } from './models/ApPersonService.js';
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import type { IObject } from './type.js';
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@ -164,6 +164,19 @@ export class ApDbResolverService implements OnApplicationShutdown {
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};
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}
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/**
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* Sharkey User -> Refetched Key
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*/
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@bindThis
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public async refetchPublicKeyForApId(user: MiRemoteUser): Promise<MiUserPublickey | null> {
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await this.apPersonService.updatePerson(user.uri);
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const key = await this.userPublickeysRepository.findOneBy({ userId: user.id });
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if (key != null) {
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await this.publicKeyByUserIdCache.set(user.id, key);
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}
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return key;
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}
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@bindThis
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public dispose(): void {
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this.publicKeyCache.dispose();
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@ -104,12 +104,24 @@ export class InboxProcessorService {
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}
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// HTTP-Signatureの検証
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const httpSignatureValidated = httpSignature.verifySignature(signature, authUser.key.keyPem);
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let httpSignatureValidated = httpSignature.verifySignature(signature, authUser.key.keyPem);
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// また、signatureのsignerは、activity.actorと一致する必要がある
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if (!httpSignatureValidated || authUser.user.uri !== activity.actor) {
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let renewKeyFailed = false;
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if (!httpSignatureValidated) {
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authUser.key = await this.apDbResolverService.refetchPublicKeyForApId(authUser.user);
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if (authUser.key != null) {
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httpSignatureValidated = httpSignature.verifySignature(signature, authUser.key.keyPem);
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} else {
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renewKeyFailed = true;
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}
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}
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// 一致しなくても、でもLD-Signatureがありそうならそっちも見る
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if (activity.signature) {
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if (activity.signature && renewKeyFailed) {
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if (activity.signature.type !== 'RsaSignature2017') {
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throw new Bull.UnrecoverableError(`skip: unsupported LD-signature type ${activity.signature.type}`);
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}
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