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server/middlewares/validators/webfinger.ts

@@ -0,0 +1,42 @@
+import { query } from 'express-validator/check'
+import * as express from 'express'
+
+import { checkErrors } from './utils'
+import { logger, isWebfingerResourceValid } from '../../helpers'
+import { database as db } from '../../initializers'
+
+const webfingerValidator = [
+  query('resource').custom(isWebfingerResourceValid).withMessage('Should have a valid webfinger resource'),
+
+  (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    logger.debug('Checking webfinger parameters', { parameters: req.query })
+
+    checkErrors(req, res, () => {
+      // Remove 'acct:' from the beginning of the string
+      const nameWithHost = req.query.resource.substr(5)
+      const [ name, ] = nameWithHost.split('@')
+
+      db.Account.loadLocalByName(name)
+        .then(account => {
+          if (!account) {
+            return res.status(404)
+              .send({ error: 'Account not found' })
+              .end()
+          }
+
+          res.locals.account = account
+          return next()
+        })
+        .catch(err => {
+          logger.error('Error in webfinger validator.', err)
+          return res.sendStatus(500)
+        })
+    })
+  }
+]
+
+// ---------------------------------------------------------------------------
+
+export {
+  webfingerValidator
+}