PeerTube/server/helpers/custom-validators/activitypub/actor.ts

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import * as validator from 'validator'
import { CONSTRAINTS_FIELDS } from '../../../initializers'
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import { exists, isArray } from '../misc'
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import { truncate } from 'lodash'
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import { isActivityPubUrlValid, isBaseActivityValid, setValidAttributedTo } from './misc'
import { isHostValid } from '../servers'
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function isActorEndpointsObjectValid (endpointObject: any) {
return isActivityPubUrlValid(endpointObject.sharedInbox)
}
function isActorPublicKeyObjectValid (publicKeyObject: any) {
return isActivityPubUrlValid(publicKeyObject.id) &&
isActivityPubUrlValid(publicKeyObject.owner) &&
isActorPublicKeyValid(publicKeyObject.publicKeyPem)
}
function isActorTypeValid (type: string) {
return type === 'Person' || type === 'Application' || type === 'Group'
}
function isActorPublicKeyValid (publicKey: string) {
return exists(publicKey) &&
typeof publicKey === 'string' &&
publicKey.startsWith('-----BEGIN PUBLIC KEY-----') &&
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publicKey.indexOf('-----END PUBLIC KEY-----') !== -1 &&
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validator.isLength(publicKey, CONSTRAINTS_FIELDS.ACTORS.PUBLIC_KEY)
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}
const actorNameRegExp = new RegExp('^[ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\\-_\.]+$')
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function isActorPreferredUsernameValid (preferredUsername: string) {
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return exists(preferredUsername) && validator.matches(preferredUsername, actorNameRegExp)
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}
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function isActorPrivateKeyValid (privateKey: string) {
return exists(privateKey) &&
typeof privateKey === 'string' &&
privateKey.startsWith('-----BEGIN RSA PRIVATE KEY-----') &&
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// Sometimes there is a \n at the end, so just assert the string contains the end mark
privateKey.indexOf('-----END RSA PRIVATE KEY-----') !== -1 &&
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validator.isLength(privateKey, CONSTRAINTS_FIELDS.ACTORS.PRIVATE_KEY)
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}
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function isActorObjectValid (actor: any) {
return exists(actor) &&
isActivityPubUrlValid(actor.id) &&
isActorTypeValid(actor.type) &&
isActivityPubUrlValid(actor.following) &&
isActivityPubUrlValid(actor.followers) &&
isActivityPubUrlValid(actor.inbox) &&
isActivityPubUrlValid(actor.outbox) &&
isActorPreferredUsernameValid(actor.preferredUsername) &&
isActivityPubUrlValid(actor.url) &&
isActorPublicKeyObjectValid(actor.publicKey) &&
isActorEndpointsObjectValid(actor.endpoints) &&
setValidAttributedTo(actor) &&
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// If this is not an account, it should be attributed to an account
// In PeerTube we use this to attach a video channel to a specific account
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(actor.type === 'Person' || actor.attributedTo.length !== 0)
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}
function isActorFollowingCountValid (value: string) {
return exists(value) && validator.isInt('' + value, { min: 0 })
}
function isActorFollowersCountValid (value: string) {
return exists(value) && validator.isInt('' + value, { min: 0 })
}
function isActorDeleteActivityValid (activity: any) {
return isBaseActivityValid(activity, 'Delete')
}
function isActorFollowActivityValid (activity: any) {
return isBaseActivityValid(activity, 'Follow') &&
isActivityPubUrlValid(activity.object)
}
function isActorAcceptActivityValid (activity: any) {
return isBaseActivityValid(activity, 'Accept')
}
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function isActorRejectActivityValid (activity: any) {
return isBaseActivityValid(activity, 'Reject')
}
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function isActorUpdateActivityValid (activity: any) {
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normalizeActor(activity.object)
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return isBaseActivityValid(activity, 'Update') &&
isActorObjectValid(activity.object)
}
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function normalizeActor (actor: any) {
if (!actor || !actor.url) return
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if (typeof actor.url !== 'string') {
actor.url = actor.url.href || actor.url.url
}
if (actor.summary && typeof actor.summary === 'string') {
actor.summary = truncate(actor.summary, { length: CONSTRAINTS_FIELDS.USERS.DESCRIPTION.max })
if (actor.summary.length < CONSTRAINTS_FIELDS.USERS.DESCRIPTION.min) {
actor.summary = null
}
}
return
}
function isValidActorHandle (handle: string) {
if (!exists(handle)) return false
const parts = handle.split('@')
if (parts.length !== 2) return false
return isHostValid(parts[1])
}
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function areValidActorHandles (handles: string[]) {
return isArray(handles) && handles.every(h => isValidActorHandle(h))
}
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// ---------------------------------------------------------------------------
export {
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normalizeActor,
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areValidActorHandles,
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isActorEndpointsObjectValid,
isActorPublicKeyObjectValid,
isActorTypeValid,
isActorPublicKeyValid,
isActorPreferredUsernameValid,
isActorPrivateKeyValid,
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isActorObjectValid,
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isActorFollowingCountValid,
isActorFollowersCountValid,
isActorFollowActivityValid,
isActorAcceptActivityValid,
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isActorRejectActivityValid,
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isActorDeleteActivityValid,
isActorUpdateActivityValid,
isValidActorHandle
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}