import * as Bluebird from 'bluebird' import { join } from 'path' import { Transaction } from 'sequelize' import * as url from 'url' import * as uuidv4 from 'uuid/v4' import { ActivityPubActor, ActivityPubActorType } from '../../../shared/models/activitypub' import { ActivityPubAttributedTo } from '../../../shared/models/activitypub/objects' import { getActorUrl } from '../../helpers/activitypub' import { isActorObjectValid } from '../../helpers/custom-validators/activitypub/actor' import { isActivityPubUrlValid } from '../../helpers/custom-validators/activitypub/misc' import { retryTransactionWrapper, updateInstanceWithAnother } from '../../helpers/database-utils' import { logger } from '../../helpers/logger' import { createPrivateAndPublicKeys } from '../../helpers/peertube-crypto' import { doRequest, doRequestAndSaveToFile } from '../../helpers/requests' import { getUrlFromWebfinger } from '../../helpers/webfinger' import { IMAGE_MIMETYPE_EXT, CONFIG, sequelizeTypescript, CONSTRAINTS_FIELDS } from '../../initializers' import { AccountModel } from '../../models/account/account' import { ActorModel } from '../../models/activitypub/actor' import { AvatarModel } from '../../models/avatar/avatar' import { ServerModel } from '../../models/server/server' import { VideoChannelModel } from '../../models/video/video-channel' import { truncate } from 'lodash' // Set account keys, this could be long so process after the account creation and do not block the client function setAsyncActorKeys (actor: ActorModel) { return createPrivateAndPublicKeys() .then(({ publicKey, privateKey }) => { actor.set('publicKey', publicKey) actor.set('privateKey', privateKey) return actor.save() }) .catch(err => { logger.error('Cannot set public/private keys of actor %d.', actor.uuid, { err }) return actor }) } async function getOrCreateActorAndServerAndModel (activityActor: string | ActivityPubActor, recurseIfNeeded = true) { const actorUrl = getActorUrl(activityActor) let actor = await ActorModel.loadByUrl(actorUrl) // We don't have this actor in our database, fetch it on remote if (!actor) { const result = await fetchRemoteActor(actorUrl) if (result === undefined) throw new Error('Cannot fetch remote actor.') // Create the attributed to actor // In PeerTube a video channel is owned by an account let ownerActor: ActorModel = undefined if (recurseIfNeeded === true && result.actor.type === 'Group') { const accountAttributedTo = result.attributedTo.find(a => a.type === 'Person') if (!accountAttributedTo) throw new Error('Cannot find account attributed to video channel ' + actor.url) try { // Assert we don't recurse another time ownerActor = await getOrCreateActorAndServerAndModel(accountAttributedTo.id, false) } catch (err) { logger.error('Cannot get or create account attributed to video channel ' + actor.url) throw new Error(err) } } const options = { arguments: [ result, ownerActor ], errorMessage: 'Cannot save actor and server with many retries.' } actor = await retryTransactionWrapper(saveActorAndServerAndModelIfNotExist, options) } const options = { arguments: [ actor ], errorMessage: 'Cannot refresh actor if needed with many retries.' } return retryTransactionWrapper(refreshActorIfNeeded, options) } function buildActorInstance (type: ActivityPubActorType, url: string, preferredUsername: string, uuid?: string) { return new ActorModel({ type, url, preferredUsername, uuid, publicKey: null, privateKey: null, followersCount: 0, followingCount: 0, inboxUrl: url + '/inbox', outboxUrl: url + '/outbox', sharedInboxUrl: CONFIG.WEBSERVER.URL + '/inbox', followersUrl: url + '/followers', followingUrl: url + '/following' }) } async function updateActorInstance (actorInstance: ActorModel, attributes: ActivityPubActor) { const followersCount = await fetchActorTotalItems(attributes.followers) const followingCount = await fetchActorTotalItems(attributes.following) actorInstance.set('type', attributes.type) actorInstance.set('uuid', attributes.uuid) actorInstance.set('preferredUsername', attributes.preferredUsername) actorInstance.set('url', attributes.id) actorInstance.set('publicKey', attributes.publicKey.publicKeyPem) actorInstance.set('followersCount', followersCount) actorInstance.set('followingCount', followingCount) actorInstance.set('inboxUrl', attributes.inbox) actorInstance.set('outboxUrl', attributes.outbox) actorInstance.set('sharedInboxUrl', attributes.endpoints.sharedInbox) actorInstance.set('followersUrl', attributes.followers) actorInstance.set('followingUrl', attributes.following) } async function updateActorAvatarInstance (actorInstance: ActorModel, avatarName: string, t: Transaction) { if (avatarName !== undefined) { if (actorInstance.avatarId) { try { await actorInstance.Avatar.destroy({ transaction: t }) } catch (err) { logger.error('Cannot remove old avatar of actor %s.', actorInstance.url, { err }) } } const avatar = await AvatarModel.create({ filename: avatarName }, { transaction: t }) actorInstance.set('avatarId', avatar.id) actorInstance.Avatar = avatar } return actorInstance } async function fetchActorTotalItems (url: string) { const options = { uri: url, method: 'GET', json: true, activityPub: true } try { const { body } = await doRequest(options) return body.totalItems ? body.totalItems : 0 } catch (err) { logger.warn('Cannot fetch remote actor count %s.', url, { err }) return 0 } } async function fetchAvatarIfExists (actorJSON: ActivityPubActor) { if ( actorJSON.icon && actorJSON.icon.type === 'Image' && IMAGE_MIMETYPE_EXT[actorJSON.icon.mediaType] !== undefined && isActivityPubUrlValid(actorJSON.icon.url) ) { const extension = IMAGE_MIMETYPE_EXT[actorJSON.icon.mediaType] const avatarName = uuidv4() + extension const destPath = join(CONFIG.STORAGE.AVATARS_DIR, avatarName) await doRequestAndSaveToFile({ method: 'GET', uri: actorJSON.icon.url }, destPath) return avatarName } return undefined } function normalizeActor (actor: any) { if (!actor) return if (!actor.url || 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 } export { getOrCreateActorAndServerAndModel, buildActorInstance, setAsyncActorKeys, fetchActorTotalItems, fetchAvatarIfExists, updateActorInstance, updateActorAvatarInstance, normalizeActor } // --------------------------------------------------------------------------- function saveActorAndServerAndModelIfNotExist ( result: FetchRemoteActorResult, ownerActor?: ActorModel, t?: Transaction ): Bluebird | Promise { let actor = result.actor if (t !== undefined) return save(t) return sequelizeTypescript.transaction(t => save(t)) async function save (t: Transaction) { const actorHost = url.parse(actor.url).host const serverOptions = { where: { host: actorHost }, defaults: { host: actorHost }, transaction: t } const [ server ] = await ServerModel.findOrCreate(serverOptions) // Save our new account in database actor.set('serverId', server.id) // Avatar? if (result.avatarName) { const avatar = await AvatarModel.create({ filename: result.avatarName }, { transaction: t }) actor.set('avatarId', avatar.id) } // Force the actor creation, sometimes Sequelize skips the save() when it thinks the instance already exists // (which could be false in a retried query) const [ actorCreated ] = await ActorModel.findOrCreate({ defaults: actor.toJSON(), where: { url: actor.url }, transaction: t }) if (actorCreated.type === 'Person' || actorCreated.type === 'Application') { actorCreated.Account = await saveAccount(actorCreated, result, t) actorCreated.Account.Actor = actorCreated } else if (actorCreated.type === 'Group') { // Video channel actorCreated.VideoChannel = await saveVideoChannel(actorCreated, result, ownerActor, t) actorCreated.VideoChannel.Actor = actorCreated } return actorCreated } } type FetchRemoteActorResult = { actor: ActorModel name: string summary: string support?: string avatarName?: string attributedTo: ActivityPubAttributedTo[] } async function fetchRemoteActor (actorUrl: string): Promise { const options = { uri: actorUrl, method: 'GET', json: true, activityPub: true } logger.info('Fetching remote actor %s.', actorUrl) const requestResult = await doRequest(options) normalizeActor(requestResult.body) const actorJSON: ActivityPubActor = requestResult.body if (isActorObjectValid(actorJSON) === false) { logger.debug('Remote actor JSON is not valid.', { actorJSON: actorJSON }) return undefined } const followersCount = await fetchActorTotalItems(actorJSON.followers) const followingCount = await fetchActorTotalItems(actorJSON.following) const actor = new ActorModel({ type: actorJSON.type, uuid: actorJSON.uuid, preferredUsername: actorJSON.preferredUsername, url: actorJSON.id, publicKey: actorJSON.publicKey.publicKeyPem, privateKey: null, followersCount: followersCount, followingCount: followingCount, inboxUrl: actorJSON.inbox, outboxUrl: actorJSON.outbox, sharedInboxUrl: actorJSON.endpoints.sharedInbox, followersUrl: actorJSON.followers, followingUrl: actorJSON.following }) const avatarName = await fetchAvatarIfExists(actorJSON) const name = actorJSON.name || actorJSON.preferredUsername return { actor, name, avatarName, summary: actorJSON.summary, support: actorJSON.support, attributedTo: actorJSON.attributedTo } } async function saveAccount (actor: ActorModel, result: FetchRemoteActorResult, t: Transaction) { const [ accountCreated ] = await AccountModel.findOrCreate({ defaults: { name: result.name, description: result.summary, actorId: actor.id }, where: { actorId: actor.id }, transaction: t }) return accountCreated } async function saveVideoChannel (actor: ActorModel, result: FetchRemoteActorResult, ownerActor: ActorModel, t: Transaction) { const [ videoChannelCreated ] = await VideoChannelModel.findOrCreate({ defaults: { name: result.name, description: result.summary, support: result.support, actorId: actor.id, accountId: ownerActor.Account.id }, where: { actorId: actor.id }, transaction: t }) return videoChannelCreated } async function refreshActorIfNeeded (actor: ActorModel) { if (!actor.isOutdated()) return actor try { const actorUrl = await getUrlFromWebfinger(actor.preferredUsername, actor.getHost()) const result = await fetchRemoteActor(actorUrl) if (result === undefined) { logger.warn('Cannot fetch remote actor in refresh actor.') return actor } return sequelizeTypescript.transaction(async t => { updateInstanceWithAnother(actor, result.actor) if (result.avatarName !== undefined) { await updateActorAvatarInstance(actor, result.avatarName, t) } // Force update actor.setDataValue('updatedAt', new Date()) await actor.save({ transaction: t }) if (actor.Account) { await actor.save({ transaction: t }) actor.Account.set('name', result.name) actor.Account.set('description', result.summary) await actor.Account.save({ transaction: t }) } else if (actor.VideoChannel) { await actor.save({ transaction: t }) actor.VideoChannel.set('name', result.name) actor.VideoChannel.set('description', result.summary) actor.VideoChannel.set('support', result.support) await actor.VideoChannel.save({ transaction: t }) } return actor }) } catch (err) { logger.warn('Cannot refresh actor.', { err }) return actor } }