server/helpers/webfinger.ts

   1 import * as WebFinger from 'webfinger.js'
   2
   3 import { isTestInstance } from './core-utils'
   4 import { isActivityPubUrlValid } from './custom-validators'
   5 import { WebFingerData } from '../../shared'
   6 import { fetchRemoteAccountAndCreatePod } from './activitypub'
   7
   8 const webfinger = new WebFinger({
   9   webfist_fallback: false,
  10   tls_only: isTestInstance(),
  11   uri_fallback: false,
  12   request_timeout: 3000
  13 })
  14
  15 async function getAccountFromWebfinger (url: string) {
  16   const webfingerData: WebFingerData = await webfingerLookup(url)
  17
  18   if (Array.isArray(webfingerData.links) === false) return undefined
  19
  20   const selfLink = webfingerData.links.find(l => l.rel === 'self')
  21   if (selfLink === undefined || isActivityPubUrlValid(selfLink.href) === false) return undefined
  22
  23   const { account } = await fetchRemoteAccountAndCreatePod(selfLink.href)
  24
  25   return account
  26 }
  27
  28 // ---------------------------------------------------------------------------
  29
  30 export {
  31   getAccountFromWebfinger
  32 }
  33
  34 // ---------------------------------------------------------------------------
  35
  36 function webfingerLookup (url: string) {
  37   return new Promise<WebFingerData>((res, rej) => {
  38     webfinger.lookup(url, (err, p) => {
  39       if (err) return rej(err)
  40
  41       return p
  42     })
  43   })
  44 }