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merge: Resolve AP collection items (prerequisite for future work) (!1067)
View MR for information: https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/1067 Approved-by: dakkar <dakkar@thenautilus.net> Approved-by: Marie <github@yuugi.dev>
This commit is contained in:
Hazelnoot
commit
4c99406aa2
7 changed files with 226 additions and 65 deletions
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@ -235,7 +235,7 @@ export class HttpRequestService {
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}
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@bindThis
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public async getActivityJson(url: string, isLocalAddressAllowed = false): Promise<IObjectWithId> {
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public async getActivityJson(url: string, isLocalAddressAllowed = false, allowAnonymous = false): Promise<IObjectWithId> {
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this.apUtilityService.assertApUrl(url);
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const res = await this.send(url, {
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@ -255,7 +255,11 @@ export class HttpRequestService {
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// Make sure the object ID matches the final URL (which is where it actually exists).
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// The caller (ApResolverService) will verify the ID against the original / entry URL, which ensures that all three match.
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if (allowAnonymous && activity.id == null) {
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activity.id = res.url;
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} else {
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this.apUtilityService.assertIdMatchesUrlAuthority(activity, res.url);
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}
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return activity as IObjectWithId;
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}
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@ -36,7 +36,7 @@ import InstanceChart from '@/core/chart/charts/instance.js';
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import FederationChart from '@/core/chart/charts/federation.js';
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import { FetchInstanceMetadataService } from '@/core/FetchInstanceMetadataService.js';
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import { UpdateInstanceQueue } from '@/core/UpdateInstanceQueue.js';
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import { getApHrefNullable, getApId, getApIds, getApType, getNullableApId, isAccept, isActor, isAdd, isAnnounce, isApObject, isBlock, isCollection, isCollectionOrOrderedCollection, isCreate, isDelete, isFlag, isFollow, isLike, isDislike, isMove, isPost, isReject, isRemove, isTombstone, isUndo, isUpdate, validActor, validPost, isActivity, IObjectWithId } from './type.js';
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import { getApHrefNullable, getApId, getApIds, getApType, getNullableApId, isAccept, isActor, isAdd, isAnnounce, isApObject, isBlock, isCollectionOrOrderedCollection, isCreate, isDelete, isFlag, isFollow, isLike, isDislike, isMove, isPost, isReject, isRemove, isTombstone, isUndo, isUpdate, validActor, validPost, isActivity, IObjectWithId } from './type.js';
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import { ApNoteService } from './models/ApNoteService.js';
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import { ApLoggerService } from './ApLoggerService.js';
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import { ApDbResolverService } from './ApDbResolverService.js';
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@ -106,22 +106,25 @@ export class ApInboxService {
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let result = undefined as string | void;
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if (isCollectionOrOrderedCollection(activity)) {
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const results = [] as [string, string | void][];
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// eslint-disable-next-line no-param-reassign
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resolver ??= this.apResolverService.createResolver();
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const items = toArray(isCollection(activity) ? activity.items : activity.orderedItems);
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if (items.length >= resolver.getRecursionLimit()) {
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throw new Error(`skipping activity: collection would surpass recursion limit: ${this.utilityService.extractDbHost(actor.uri)}`);
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}
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for (const item of items) {
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const act = await resolver.resolve(item);
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if (act.id == null || this.utilityService.extractDbHost(act.id) !== this.utilityService.extractDbHost(actor.uri)) {
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this.logger.debug('skipping activity: activity id is null or mismatching');
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const items = await resolver.resolveCollectionItems(activity);
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for (let i = 0; i < items.length; i++) {
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const act = items[i];
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if (act.id != null) {
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if (this.utilityService.extractDbHost(act.id) !== this.utilityService.extractDbHost(actor.uri)) {
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this.logger.warn('skipping activity: activity id mismatch');
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continue;
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}
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} else {
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// Activity ID should only be string or undefined.
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act.id = undefined;
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}
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try {
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results.push([getApId(item), await this.performOneActivity(actor, act, resolver)]);
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const id = getNullableApId(act) ?? `${getNullableApId(activity)}#${i}`;
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const result = await this.performOneActivity(actor, act, resolver);
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results.push([id, result]);
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} catch (err) {
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if (err instanceof Error || typeof err === 'string') {
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this.logger.error(err);
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@ -184,10 +184,11 @@ export class ApRequestService {
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* Get AP object with http-signature
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* @param user http-signature user
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* @param url URL to fetch
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* @param followAlternate
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* @param allowAnonymous If a fetched object lacks an ID, then it will be auto-generated from the final URL. (default: false)
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* @param followAlternate Whether to resolve HTML responses to their referenced canonical AP endpoint. (default: true)
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*/
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@bindThis
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public async signedGet(url: string, user: { id: MiUser['id'] }, followAlternate?: boolean): Promise<IObjectWithId> {
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public async signedGet(url: string, user: { id: MiUser['id'] }, allowAnonymous = false, followAlternate?: boolean): Promise<IObjectWithId> {
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this.apUtilityService.assertApUrl(url);
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const _followAlternate = followAlternate ?? true;
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@ -258,7 +259,7 @@ export class ApRequestService {
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if (alternate) {
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const href = alternate.getAttribute('href');
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if (href && this.apUtilityService.haveSameAuthority(url, href)) {
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return await this.signedGet(href, user, false);
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return await this.signedGet(href, user, allowAnonymous, false);
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}
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}
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} catch {
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@ -275,7 +276,11 @@ export class ApRequestService {
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// Make sure the object ID matches the final URL (which is where it actually exists).
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// The caller (ApResolverService) will verify the ID against the original / entry URL, which ensures that all three match.
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if (allowAnonymous && activity.id == null) {
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activity.id = res.url;
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} else {
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this.apUtilityService.assertIdMatchesUrlAuthority(activity, res.url);
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}
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return activity as IObjectWithId;
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}
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@ -5,6 +5,7 @@
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import { Inject, Injectable } from '@nestjs/common';
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import { IsNull, Not } from 'typeorm';
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import promiseLimit from 'promise-limit';
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import type { MiLocalUser, MiRemoteUser } from '@/models/User.js';
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import type { NotesRepository, PollsRepository, NoteReactionsRepository, UsersRepository, FollowRequestsRepository, MiMeta, SkApFetchLog } from '@/models/_.js';
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import type { Config } from '@/config.js';
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@ -19,11 +20,12 @@ import { ApLogService, calculateDurationSince, extractObjectContext } from '@/co
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import { ApUtilityService } from '@/core/activitypub/ApUtilityService.js';
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import { SystemAccountService } from '@/core/SystemAccountService.js';
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import { IdentifiableError } from '@/misc/identifiable-error.js';
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import { getApId, getNullableApId, IObjectWithId, isCollectionOrOrderedCollection } from './type.js';
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import { toArray } from '@/misc/prelude/array.js';
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import { AnyCollection, getApId, getNullableApId, IObjectWithId, isCollection, isCollectionOrOrderedCollection, isCollectionPage, isOrderedCollection, isOrderedCollectionPage } from './type.js';
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import { ApDbResolverService } from './ApDbResolverService.js';
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import { ApRendererService } from './ApRendererService.js';
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import { ApRequestService } from './ApRequestService.js';
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import type { IObject, ICollection, IOrderedCollection, ApObject } from './type.js';
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import type { IObject, ApObject, IAnonymousObject } from './type.js';
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export class Resolver {
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private history: Set<string>;
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@ -63,11 +65,16 @@ export class Resolver {
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return this.recursionLimit;
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}
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public async resolveCollection(value: string | IObjectWithId, allowAnonymous?: boolean, sentFromUri?: string): Promise<AnyCollection & IObjectWithId>;
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public async resolveCollection(value: string | IObject, allowAnonymous: boolean | undefined, sentFromUri: string): Promise<AnyCollection & IObjectWithId>;
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public async resolveCollection(value: string | IObject, allowAnonymous?: boolean, sentFromUri?: string): Promise<AnyCollection>;
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@bindThis
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public async resolveCollection(value: string | IObject): Promise<ICollection | IOrderedCollection> {
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public async resolveCollection(value: string | IObject, allowAnonymous?: boolean, sentFromUri?: string): Promise<AnyCollection> {
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const collection = typeof value === 'string'
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? await this.resolve(value)
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: value;
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? sentFromUri
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? await this.secureResolve(value, sentFromUri, allowAnonymous)
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: await this.resolve(value, allowAnonymous)
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: value; // TODO try and remove this eventually, as it's a major security foot-gun
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if (isCollectionOrOrderedCollection(collection)) {
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return collection;
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@ -76,20 +83,110 @@ export class Resolver {
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}
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}
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public async resolveCollectionItems(collection: IAnonymousObject, limit?: number | null, allowAnonymousItems?: true, concurrency?: number): Promise<IAnonymousObject[]>;
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public async resolveCollectionItems(collection: string | IObjectWithId, limit?: number | null, allowAnonymousItems?: boolean, concurrency?: number): Promise<IObjectWithId[]>;
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public async resolveCollectionItems(collection: string | IObject, limit?: number | null, allowAnonymousItems?: boolean, concurrency?: number): Promise<IObject[]>;
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/**
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* Recursively resolves items from a collection.
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* Stops when reaching the resolution limit or an optional item limit - whichever is lower.
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* This method supports Collection, OrderedCollection, and individual pages of either type.
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* Malformed collections (mixing Ordered and un-Ordered types) are also supported.
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* @param collection Collection to resolve from - can be a URL or object of any supported collection type.
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* @param limit Maximum number of items to resolve. If null or undefined (default), then items will be resolved until reaching the recursion limit.
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* @param allowAnonymousItems If true, collection items can be anonymous (lack an ID). If false (default), then an error is thrown when reaching an item without ID.
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* @param concurrency Maximum number of items to resolve at once. (default: 4)
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*/
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@bindThis
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public async resolveCollectionItems(collection: string | IObject, limit?: number | null, allowAnonymousItems?: boolean, concurrency = 4): Promise<IObject[]> {
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const resolvedItems: IObject[] = [];
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// This is pulled up to avoid code duplication below
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const iterate = async(items: ApObject, current: AnyCollection) => {
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const sentFrom = current.id;
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const itemArr = toArray(items);
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const itemLimit = limit ?? Number.MAX_SAFE_INTEGER;
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const allowAnonymous = allowAnonymousItems ?? false;
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await this.resolveItemArray(itemArr, sentFrom, itemLimit, concurrency, allowAnonymous, resolvedItems);
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};
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let current: AnyCollection | null = await this.resolveCollection(collection);
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do {
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// Iterate all items in the current page
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if (current.items) {
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await iterate(current.items, current);
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}
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if (current.orderedItems) {
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await iterate(current.orderedItems, current);
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}
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if (this.history.size >= this.recursionLimit) {
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// Stop when we reach the fetch limit
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current = null;
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} else if (limit != null && resolvedItems.length >= limit) {
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// Stop when we reach the item limit
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current = null;
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} else if (isCollection(current) || isOrderedCollection(current)) {
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// Continue to first page
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current = current.first ? await this.resolveCollection(current.first, true, current.id) : null;
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} else if (isCollectionPage(current) || isOrderedCollectionPage(current)) {
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// Continue to next page
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current = current.next ? await this.resolveCollection(current.next, true, current.id) : null;
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} else {
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// Stop in all other conditions
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current = null;
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}
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} while (current != null);
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return resolvedItems;
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}
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private async resolveItemArray(source: (string | IObject)[], sentFrom: undefined, itemLimit: number, concurrency: number, allowAnonymousItems: true, destination: IAnonymousObject[]): Promise<void>;
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private async resolveItemArray(source: (string | IObject)[], sentFrom: string, itemLimit: number, concurrency: number, allowAnonymousItems: boolean, destination: IObjectWithId[]): Promise<void>;
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private async resolveItemArray(source: (string | IObject)[], sentFrom: string | undefined, itemLimit: number, concurrency: number, allowAnonymousItems: boolean, destination: IObject[]): Promise<void>;
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private async resolveItemArray(source: (string | IObject)[], sentFrom: string | undefined, itemLimit: number, concurrency: number, allowAnonymousItems: boolean, destination: IObject[]): Promise<void> {
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const recursionLimit = this.recursionLimit - this.history.size;
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const batchLimit = Math.min(source.length, recursionLimit, itemLimit);
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const limiter = promiseLimit<IObject>(concurrency);
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const batch = await Promise.all(source
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.slice(0, batchLimit)
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.map(item => limiter(async () => {
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if (sentFrom) {
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// Use secureResolve to avoid re-fetching items that were included inline.
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return await this.secureResolve(item, sentFrom, allowAnonymousItems);
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} else if (allowAnonymousItems) {
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return await this.resolveAnonymous(item);
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} else {
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// ID is required if we have neither sentFrom not allowAnonymousItems
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const id = getApId(item);
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return await this.resolve(id);
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}
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})));
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destination.push(...batch);
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};
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/**
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* Securely resolves an AP object or URL that has been sent from another instance.
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* An input object is trusted if and only if its ID matches the authority of sentFromUri.
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* In all other cases, the object is re-fetched from remote by input string or object ID.
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* @param input The input object or URL to resolve
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* @param sentFromUri The URL where this object originated. This MUST be accurate - all security checks depend on this value!
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* @param allowAnonymous If true, anonymous objects are allowed and will have their ID set to sentFromUri. If false (default) then anonymous objects will be rejected with an error.
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*/
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@bindThis
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public async secureResolve(input: ApObject, sentFromUri: string): Promise<IObjectWithId> {
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public async secureResolve(input: string | IObject | [string | IObject], sentFromUri: string, allowAnonymous?: boolean): Promise<IObjectWithId> {
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// Unpack arrays to get the value element.
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const value = fromTuple(input);
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if (value == null) {
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throw new IdentifiableError('20058164-9de1-4573-8715-425753a21c1d', 'Cannot resolve null input');
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// If anonymous input is allowed, then any object is automatically valid if we set the ID.
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// We can short-circuit here and avoid un-necessary checks.
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if (allowAnonymous && typeof(value) === 'object' && value.id == null) {
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value.id = sentFromUri;
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return value as IObjectWithId;
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}
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// This will throw if the input has no ID, which is good because we can't verify an anonymous object anyway.
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// This ensures the input has a string ID, protecting against type confusion and rejecting anonymous objects.
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const id = getApId(value);
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// Check if we can use the provided object as-is.
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@ -100,28 +197,52 @@ export class Resolver {
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}
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// If the checks didn't pass, then we must fetch the object and use that.
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return await this.resolve(id);
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return await this.resolve(id, allowAnonymous);
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}
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public async resolve(value: string | [string]): Promise<IObjectWithId>;
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public async resolve(value: string | IObject | [string | IObject]): Promise<IObject>;
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/**
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* Resolves an anonymous object.
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* The returned value will not have any ID present.
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* If one is provided in the response, it will be removed automatically.
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*/
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@bindThis
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public async resolve(value: string | IObject | [string | IObject]): Promise<IObject> {
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public async resolveAnonymous(value: string | IObject | [string | IObject]): Promise<IAnonymousObject> {
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value = fromTuple(value);
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const object = await this.resolve(value);
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object.id = undefined;
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return object as IAnonymousObject;
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}
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public async resolve(value: string | [string], allowAnonymous?: boolean): Promise<IObjectWithId>;
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public async resolve(value: string | IObjectWithId | [string | IObjectWithId], allowAnonymous?: boolean): Promise<IObjectWithId>;
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public async resolve(value: string | IObject | [string | IObject], allowAnonymous?: boolean): Promise<IObject>;
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/**
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* Resolves a URL or object to an AP object.
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* Tuples are expanded to their first element before anything else, and non-string inputs are returned as-is.
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* Otherwise, the string URL is fetched and validated to represent a valid ActivityPub object.
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* @param value The input value to resolve
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* @param allowAnonymous Determines what to do if a response object lacks an ID field. If false (default), then an exception is thrown. If true, then the ID is populated from the final response URL.
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*/
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@bindThis
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public async resolve(value: string | IObject | [string | IObject], allowAnonymous = false): Promise<IObject> {
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value = fromTuple(value);
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// TODO try and remove this eventually, as it's a major security foot-gun
|
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if (typeof value !== 'string') {
|
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return value;
|
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}
|
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const host = this.utilityService.extractDbHost(value);
|
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if (this.config.activityLogging.enabled && !this.utilityService.isSelfHost(host)) {
|
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return await this._resolveLogged(value, host);
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return await this._resolveLogged(value, host, allowAnonymous);
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} else {
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return await this._resolve(value, host);
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return await this._resolve(value, host, allowAnonymous);
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}
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}
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private async _resolveLogged(requestUri: string, host: string): Promise<IObjectWithId> {
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private async _resolveLogged(requestUri: string, host: string, allowAnonymous: boolean): Promise<IObjectWithId> {
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const startTime = process.hrtime.bigint();
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const log = await this.apLogService.createFetchLog({
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@ -130,7 +251,7 @@ export class Resolver {
|
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});
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try {
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const result = await this._resolve(requestUri, host, log);
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const result = await this._resolve(requestUri, host, allowAnonymous, log);
|
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log.accepted = true;
|
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log.result = 'ok';
|
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|
|
@ -150,7 +271,7 @@ export class Resolver {
|
|||
}
|
||||
}
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||||
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||||
private async _resolve(value: string, host: string, log?: SkApFetchLog): Promise<IObjectWithId> {
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private async _resolve(value: string, host: string, allowAnonymous: boolean, log?: SkApFetchLog): Promise<IObjectWithId> {
|
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if (value.includes('#')) {
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||||
// URLs with fragment parts cannot be resolved correctly because
|
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// the fragment part does not get transmitted over HTTP(S).
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|
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@ -181,8 +302,8 @@ export class Resolver {
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}
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const object = (this.user
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? await this.apRequestService.signedGet(value, this.user)
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: await this.httpRequestService.getActivityJson(value));
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? await this.apRequestService.signedGet(value, this.user, allowAnonymous)
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: await this.httpRequestService.getActivityJson(value, false, allowAnonymous));
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if (log) {
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const { object: objectOnly, context, contextHash } = extractObjectContext(object);
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|
|
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@ -43,6 +43,18 @@ export interface IObjectWithId extends IObject {
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id: string;
|
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}
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export function isObjectWithId(object: IObject): object is IObjectWithId {
|
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return typeof(object.id) === 'string';
|
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}
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export interface IAnonymousObject extends IObject {
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id: undefined;
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}
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export function isAnonymousObject(object: IObject): object is IAnonymousObject {
|
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return object.id === undefined;
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}
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||||
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||||
/**
|
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* Get array of ActivityStreams Objects id
|
||||
*/
|
||||
|
|
@ -125,48 +137,46 @@ export interface IActivity extends IObject {
|
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};
|
||||
}
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|
||||
export interface ICollection extends IObject {
|
||||
export interface CollectionBase extends IObject {
|
||||
totalItems?: number;
|
||||
first?: IObject | string;
|
||||
last?: IObject | string;
|
||||
current?: IObject | string;
|
||||
partOf?: IObject | string;
|
||||
next?: IObject | string;
|
||||
prev?: IObject | string;
|
||||
items?: ApObject;
|
||||
orderedItems?: ApObject;
|
||||
}
|
||||
|
||||
export interface ICollection extends CollectionBase {
|
||||
type: 'Collection';
|
||||
totalItems: number;
|
||||
first?: IObject | string;
|
||||
last?: IObject | string;
|
||||
current?: IObject | string;
|
||||
items?: ApObject;
|
||||
orderedItems?: undefined;
|
||||
}
|
||||
|
||||
export interface IOrderedCollection extends IObject {
|
||||
export interface IOrderedCollection extends CollectionBase {
|
||||
type: 'OrderedCollection';
|
||||
totalItems: number;
|
||||
first?: IObject | string;
|
||||
last?: IObject | string;
|
||||
current?: IObject | string;
|
||||
items?: undefined;
|
||||
orderedItems?: ApObject;
|
||||
}
|
||||
|
||||
export interface ICollectionPage extends IObject {
|
||||
export interface ICollectionPage extends CollectionBase {
|
||||
type: 'CollectionPage';
|
||||
totalItems: number;
|
||||
first?: IObject | string;
|
||||
last?: IObject | string;
|
||||
current?: IObject | string;
|
||||
partOf?: IObject | string;
|
||||
next?: IObject | string;
|
||||
prev?: IObject | string;
|
||||
items?: ApObject;
|
||||
orderedItems?: undefined;
|
||||
}
|
||||
|
||||
export interface IOrderedCollectionPage extends IObject {
|
||||
export interface IOrderedCollectionPage extends CollectionBase {
|
||||
type: 'OrderedCollectionPage';
|
||||
totalItems: number;
|
||||
first?: IObject | string;
|
||||
last?: IObject | string;
|
||||
current?: IObject | string;
|
||||
partOf?: IObject | string;
|
||||
next?: IObject | string;
|
||||
prev?: IObject | string;
|
||||
items?: undefined;
|
||||
orderedItems?: ApObject;
|
||||
}
|
||||
|
||||
export type AnyCollection = ICollection | IOrderedCollection | ICollectionPage | IOrderedCollectionPage;
|
||||
|
||||
export const validPost = ['Note', 'Question', 'Article', 'Audio', 'Document', 'Image', 'Page', 'Video', 'Event'];
|
||||
|
||||
export const isPost = (object: IObject): object is IPost => {
|
||||
|
|
@ -269,7 +279,7 @@ export const isCollectionPage = (object: IObject): object is ICollectionPage =>
|
|||
export const isOrderedCollectionPage = (object: IObject): object is IOrderedCollectionPage =>
|
||||
getApType(object) === 'OrderedCollectionPage';
|
||||
|
||||
export const isCollectionOrOrderedCollection = (object: IObject): object is ICollection | IOrderedCollection =>
|
||||
export const isCollectionOrOrderedCollection = (object: IObject): object is AnyCollection =>
|
||||
isCollection(object) || isOrderedCollection(object) || isCollectionPage(object) || isOrderedCollectionPage(object);
|
||||
|
||||
export interface IApPropertyValue extends IObject {
|
||||
|
|
|
|||
|
|
@ -7,6 +7,7 @@ import { Injectable } from '@nestjs/common';
|
|||
import ms from 'ms';
|
||||
import { Endpoint } from '@/server/api/endpoint-base.js';
|
||||
import { ApResolverService } from '@/core/activitypub/ApResolverService.js';
|
||||
import { isCollectionOrOrderedCollection, isOrderedCollection, isOrderedCollectionPage } from '@/core/activitypub/type.js';
|
||||
|
||||
export const meta = {
|
||||
tags: ['federation'],
|
||||
|
|
@ -33,6 +34,9 @@ export const paramDef = {
|
|||
type: 'object',
|
||||
properties: {
|
||||
uri: { type: 'string' },
|
||||
expandCollectionItems: { type: 'boolean' },
|
||||
expandCollectionLimit: { type: 'integer', nullable: true },
|
||||
allowAnonymous: { type: 'boolean' },
|
||||
},
|
||||
required: ['uri'],
|
||||
} as const;
|
||||
|
|
@ -44,7 +48,18 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
|
|||
) {
|
||||
super(meta, paramDef, async (ps, me) => {
|
||||
const resolver = this.apResolverService.createResolver();
|
||||
const object = await resolver.resolve(ps.uri);
|
||||
const object = await resolver.resolve(ps.uri, ps.allowAnonymous ?? false);
|
||||
|
||||
if (ps.expandCollectionItems && isCollectionOrOrderedCollection(object)) {
|
||||
const items = await resolver.resolveCollectionItems(object, ps.expandCollectionLimit, ps.allowAnonymous ?? false);
|
||||
|
||||
if (isOrderedCollection(object) || isOrderedCollectionPage(object)) {
|
||||
object.orderedItems = items;
|
||||
} else {
|
||||
object.items = items;
|
||||
}
|
||||
}
|
||||
|
||||
return object;
|
||||
});
|
||||
}
|
||||
|
|
|
|||
|
|
@ -12918,6 +12918,9 @@ export type operations = {
|
|||
content: {
|
||||
'application/json': {
|
||||
uri: string;
|
||||
expandCollectionItems?: boolean;
|
||||
expandCollectionLimit?: number | null;
|
||||
allowAnonymous?: boolean;
|
||||
};
|
||||
};
|
||||
};
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue