ego

server/federation/helpers.js

@@ -55,6 +55,26 @@ const Helpers = {
       body['@context'] = 'https://www.w3.org/ns/activitystreams'
       Helpers.signAndSend(body, user, follower)
     }    
+  },
+
+  // TODO: cache
+  // user: les@mastodon.cisti.org
+  async getFederatedUser(address) {
+    address = address.trim()
+    let [ user, host ] = address.split('@')
+    const url = `https://${host}/.well-known/webfinger?resource=acct:${user}@${host}`
+    console.error('get federated user at => ', address, url)
+    const user = await fetch(url, { headers: {'Accept': 'application/jrd+json, application/json'} })
+    return user
+  },
+
+  async verifySignature(req, res) {
+    console.error(req.headers['signature'])
+    // https://blog.joinmastodon.org/2018/07/how-to-make-friends-and-verify-requests/
+    const signature_header = req.headers['signature'].split(',')
+      .map(pair => pair.split('='))
+    console.error(signature_header)
+    return true
   }
 }