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fix: primitives 21, 22, and 23: reuse resolver

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This also increases the default `recursionLimit` for `Resolver`, as it
theoretically will go higher that it previously would and could possibly
fail on non-malicious collection activities.
This commit is contained in:
Julia Johannesen 2024-11-14 21:53:16 -05:00
parent 408e782507
commit 74565f67f7
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GPG key ID: 4A1377AF3E7FBC46
2 changed files with 55 additions and 37 deletions
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85
packages/backend/src/core/activitypub/ApInboxService.ts
View file

@ -93,19 +93,26 @@ export class ApInboxService {
}
@bindThis
public async performActivity(actor: MiRemoteUser, activity: IObject): Promise<string | void> {
public async performActivity(actor: MiRemoteUser, activity: IObject, resolver?: Resolver): Promise<string | void> {
let result = undefined as string | void;
if (isCollectionOrOrderedCollection(activity)) {
const results = [] as [string, string | void][];
const resolver = this.apResolverService.createResolver();
for (const item of toArray(isCollection(activity) ? activity.items : activity.orderedItems)) {
// eslint-disable-next-line no-param-reassign
resolver ??= this.apResolverService.createResolver();
const items = toArray(isCollection(activity) ? activity.items : activity.orderedItems);
if (items.length >= resolver.getRecursionLimit()) {
throw new Error(`skipping activity: collection would surpass recursion limit: ${this.utilityService.extractDbHost(actor.uri)}`);
}
for (const item of items) {
const act = await resolver.resolve(item);
if (act.id == null || this.utilityService.extractDbHost(act.id) !== this.utilityService.extractDbHost(actor.uri)) {
this.logger.debug('skipping activity: activity id is null or mismatching');
continue;
}
try {
results.push([getApId(item), await this.performOneActivity(actor, act)]);
results.push([getApId(item), await this.performOneActivity(actor, act, resolver)]);
} catch (err) {
if (err instanceof Error || typeof err === 'string') {
this.logger.error(err);
@ -120,7 +127,7 @@ export class ApInboxService {
result = results.map(([id, reason]) => `${id}: ${reason}`).join('\n');
}
} else {
result = await this.performOneActivity(actor, activity);
result = await this.performOneActivity(actor, activity, resolver);
}
// ついでにリモートユーザーの情報が古かったら更新しておく
@ -135,37 +142,37 @@ export class ApInboxService {
}
@bindThis
public async performOneActivity(actor: MiRemoteUser, activity: IObject): Promise<string | void> {
public async performOneActivity(actor: MiRemoteUser, activity: IObject, resolver?: Resolver): Promise<string | void> {
if (actor.isSuspended) return;
if (isCreate(activity)) {
return await this.create(actor, activity);
return await this.create(actor, activity, resolver);
} else if (isDelete(activity)) {
return await this.delete(actor, activity);
} else if (isUpdate(activity)) {
return await this.update(actor, activity);
return await this.update(actor, activity, resolver);
} else if (isFollow(activity)) {
return await this.follow(actor, activity);
} else if (isAccept(activity)) {
return await this.accept(actor, activity);
return await this.accept(actor, activity, resolver);
} else if (isReject(activity)) {
return await this.reject(actor, activity);
return await this.reject(actor, activity, resolver);
} else if (isAdd(activity)) {
return await this.add(actor, activity);
return await this.add(actor, activity, resolver);
} else if (isRemove(activity)) {
return await this.remove(actor, activity);
return await this.remove(actor, activity, resolver);
} else if (isAnnounce(activity)) {
return await this.announce(actor, activity);
return await this.announce(actor, activity, resolver);
} else if (isLike(activity)) {
return await this.like(actor, activity);
} else if (isUndo(activity)) {
return await this.undo(actor, activity);
return await this.undo(actor, activity, resolver);
} else if (isBlock(activity)) {
return await this.block(actor, activity);
} else if (isFlag(activity)) {
return await this.flag(actor, activity);
} else if (isMove(activity)) {
return await this.move(actor, activity);
return await this.move(actor, activity, resolver);
} else {
return `unrecognized activity type: ${activity.type}`;
}
@ -207,12 +214,13 @@ export class ApInboxService {
}
@bindThis
private async accept(actor: MiRemoteUser, activity: IAccept): Promise<string> {
private async accept(actor: MiRemoteUser, activity: IAccept, resolver?: Resolver): Promise<string> {
const uri = activity.id ?? activity;
this.logger.info(`Accept: ${uri}`);
const resolver = this.apResolverService.createResolver();
// eslint-disable-next-line no-param-reassign
resolver ??= this.apResolverService.createResolver();
const object = await resolver.resolve(activity.object).catch(err => {
this.logger.error(`Resolution failed: ${err}`);
@ -249,7 +257,7 @@ export class ApInboxService {
}
@bindThis
private async add(actor: MiRemoteUser, activity: IAdd): Promise<string | void> {
private async add(actor: MiRemoteUser, activity: IAdd, resolver?: Resolver): Promise<string | void> {
if (actor.uri !== activity.actor) {
return 'invalid actor';
}
@ -260,7 +268,7 @@ export class ApInboxService {
if (activity.target === actor.featured) {
const object = fromTuple(activity.object);
const note = await this.apNoteService.resolveNote(object);
const note = await this.apNoteService.resolveNote(object, { resolver });
if (note == null) return 'note not found';
await this.notePiningService.addPinned(actor, note.id);
return;
@ -270,12 +278,13 @@ export class ApInboxService {
}
@bindThis
private async announce(actor: MiRemoteUser, activity: IAnnounce): Promise<string | void> {
private async announce(actor: MiRemoteUser, activity: IAnnounce, resolver?: Resolver): Promise<string | void> {
const uri = getApId(activity);
this.logger.info(`Announce: ${uri}`);
const resolver = this.apResolverService.createResolver();
// eslint-disable-next-line no-param-reassign
resolver ??= this.apResolverService.createResolver();
const activityObject = fromTuple(activity.object);
if (!activityObject) return 'skip: activity has no object property';
@ -293,7 +302,7 @@ export class ApInboxService {
}
@bindThis
private async announceNote(actor: MiRemoteUser, activity: IAnnounce, target: IPost): Promise<string | void> {
private async announceNote(actor: MiRemoteUser, activity: IAnnounce, target: IPost, resolver?: Resolver): Promise<string | void> {
const uri = getApId(activity);
if (actor.isSuspended) {
@ -315,7 +324,7 @@ export class ApInboxService {
// Announce対象をresolve
let renote;
try {
renote = await this.apNoteService.resolveNote(target);
renote = await this.apNoteService.resolveNote(target, { resolver });
if (renote == null) return 'announce target is null';
} catch (err) {
// 対象が4xxならスキップ
@ -334,7 +343,7 @@ export class ApInboxService {
this.logger.info(`Creating the (Re)Note: ${uri}`);
const activityAudience = await this.apAudienceService.parseAudience(actor, activity.to, activity.cc);
const activityAudience = await this.apAudienceService.parseAudience(actor, activity.to, activity.cc, resolver);
const createdAt = activity.published ? new Date(activity.published) : null;
if (createdAt && createdAt < this.idService.parse(renote.id).date) {
@ -372,7 +381,7 @@ export class ApInboxService {
}
@bindThis
private async create(actor: MiRemoteUser, activity: ICreate): Promise<string | void> {
private async create(actor: MiRemoteUser, activity: ICreate, resolver?: Resolver): Promise<string | void> {
const uri = getApId(activity);
this.logger.info(`Create: ${uri}`);
@ -398,7 +407,8 @@ export class ApInboxService {
activityObject.attributedTo = activity.actor;
}
const resolver = this.apResolverService.createResolver();
// eslint-disable-next-line no-param-reassign
resolver ??= this.apResolverService.createResolver();
const object = await resolver.resolve(activityObject).catch(e => {
this.logger.error(`Resolution failed: ${e}`);
@ -574,12 +584,13 @@ export class ApInboxService {
}
@bindThis
private async reject(actor: MiRemoteUser, activity: IReject): Promise<string> {
private async reject(actor: MiRemoteUser, activity: IReject, resolver?: Resolver): Promise<string> {
const uri = activity.id ?? activity;
this.logger.info(`Reject: ${uri}`);
const resolver = this.apResolverService.createResolver();
// eslint-disable-next-line no-param-reassign
resolver ??= this.apResolverService.createResolver();
const object = await resolver.resolve(activity.object).catch(e => {
this.logger.error(`Resolution failed: ${e}`);
@ -616,7 +627,7 @@ export class ApInboxService {
}
@bindThis
private async remove(actor: MiRemoteUser, activity: IRemove): Promise<string | void> {
private async remove(actor: MiRemoteUser, activity: IRemove, resolver?: Resolver): Promise<string | void> {
if (actor.uri !== activity.actor) {
return 'invalid actor';
}
@ -627,7 +638,7 @@ export class ApInboxService {
if (activity.target === actor.featured) {
const activityObject = fromTuple(activity.object);
const note = await this.apNoteService.resolveNote(activityObject);
const note = await this.apNoteService.resolveNote(activityObject, { resolver });
if (note == null) return 'note not found';
await this.notePiningService.removePinned(actor, note.id);
return;
@ -637,7 +648,7 @@ export class ApInboxService {
}
@bindThis
private async undo(actor: MiRemoteUser, activity: IUndo): Promise<string> {
private async undo(actor: MiRemoteUser, activity: IUndo, resolver?: Resolver): Promise<string> {
if (actor.uri !== activity.actor) {
return 'invalid actor';
}
@ -646,7 +657,8 @@ export class ApInboxService {
this.logger.info(`Undo: ${uri}`);
const resolver = this.apResolverService.createResolver();
// eslint-disable-next-line no-param-reassign
resolver ??= this.apResolverService.createResolver();
const object = await resolver.resolve(activity.object).catch(e => {
this.logger.error(`Resolution failed: ${e}`);
@ -770,14 +782,15 @@ export class ApInboxService {
}
@bindThis
private async update(actor: MiRemoteUser, activity: IUpdate): Promise<string> {
private async update(actor: MiRemoteUser, activity: IUpdate, resolver?: Resolver): Promise<string> {
if (actor.uri !== activity.actor) {
return 'skip: invalid actor';
}
this.logger.debug('Update');
const resolver = this.apResolverService.createResolver();
// eslint-disable-next-line no-param-reassign
resolver ??= this.apResolverService.createResolver();
const object = await resolver.resolve(activity.object).catch(e => {
this.logger.error(`Resolution failed: ${e}`);
@ -799,11 +812,11 @@ export class ApInboxService {
}
@bindThis
private async move(actor: MiRemoteUser, activity: IMove): Promise<string> {
private async move(actor: MiRemoteUser, activity: IMove, resolver?: Resolver): Promise<string> {
// fetch the new and old accounts
const targetUri = getApHrefNullable(activity.target);
if (!targetUri) return 'skip: invalid activity target';
return await this.apPersonService.updatePerson(actor.uri) ?? 'skip: nothing to do';
return await this.apPersonService.updatePerson(actor.uri, resolver) ?? 'skip: nothing to do';
}
}

7
packages/backend/src/core/activitypub/ApResolverService.ts
View file

@ -42,7 +42,7 @@ export class Resolver {
private apRendererService: ApRendererService,
private apDbResolverService: ApDbResolverService,
private loggerService: LoggerService,
private recursionLimit = 100,
private recursionLimit = 256,
) {
this.history = new Set();
this.logger = this.loggerService.getLogger('ap-resolve');
@ -53,6 +53,11 @@ export class Resolver {
return Array.from(this.history);
}
@bindThis
public getRecursionLimit(): number {
return this.recursionLimit;
}
@bindThis
public async resolveCollection(value: string | IObject): Promise<ICollection | IOrderedCollection> {
const collection = typeof value === 'string'