From e364e31e25bd1d4b8d801c845a96d6be708f0a18 Mon Sep 17 00:00:00 2001
From: Chocobozzz <me@florianbigard.com>
Date: Thu, 19 Jan 2023 09:27:16 +0100
Subject: Implement signup approval in server

---
 .../validators/user-email-verification.ts          | 94 ++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 server/middlewares/validators/user-email-verification.ts

(limited to 'server/middlewares/validators/user-email-verification.ts')

diff --git a/server/middlewares/validators/user-email-verification.ts b/server/middlewares/validators/user-email-verification.ts
new file mode 100644
index 000000000..74702a8f5
--- /dev/null
+++ b/server/middlewares/validators/user-email-verification.ts
@@ -0,0 +1,94 @@
+import express from 'express'
+import { body, param } from 'express-validator'
+import { toBooleanOrNull } from '@server/helpers/custom-validators/misc'
+import { HttpStatusCode } from '@shared/models'
+import { logger } from '../../helpers/logger'
+import { Redis } from '../../lib/redis'
+import { areValidationErrors, checkUserEmailExist, checkUserIdExist } from './shared'
+import { checkRegistrationEmailExist, checkRegistrationIdExist } from './shared/user-registrations'
+
+const usersAskSendVerifyEmailValidator = [
+  body('email').isEmail().not().isEmpty().withMessage('Should have a valid email'),
+
+  async (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    if (areValidationErrors(req, res)) return
+
+    const [ userExists, registrationExists ] = await Promise.all([
+      checkUserEmailExist(req.body.email, res, false),
+      checkRegistrationEmailExist(req.body.email, res, false)
+    ])
+
+    if (!userExists && !registrationExists) {
+      logger.debug('User or registration with email %s does not exist (asking verify email).', req.body.email)
+      // Do not leak our emails
+      return res.status(HttpStatusCode.NO_CONTENT_204).end()
+    }
+
+    if (res.locals.user?.pluginAuth) {
+      return res.fail({
+        status: HttpStatusCode.CONFLICT_409,
+        message: 'Cannot ask verification email of a user that uses a plugin authentication.'
+      })
+    }
+
+    return next()
+  }
+]
+
+const usersVerifyEmailValidator = [
+  param('id')
+    .isInt().not().isEmpty().withMessage('Should have a valid id'),
+
+  body('verificationString')
+    .not().isEmpty().withMessage('Should have a valid verification string'),
+  body('isPendingEmail')
+    .optional()
+    .customSanitizer(toBooleanOrNull),
+
+  async (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    if (areValidationErrors(req, res)) return
+    if (!await checkUserIdExist(req.params.id, res)) return
+
+    const user = res.locals.user
+    const redisVerificationString = await Redis.Instance.getUserVerifyEmailLink(user.id)
+
+    if (redisVerificationString !== req.body.verificationString) {
+      return res.fail({ status: HttpStatusCode.FORBIDDEN_403, message: 'Invalid verification string.' })
+    }
+
+    return next()
+  }
+]
+
+// ---------------------------------------------------------------------------
+
+const registrationVerifyEmailValidator = [
+  param('registrationId')
+    .isInt().not().isEmpty().withMessage('Should have a valid registrationId'),
+
+  body('verificationString')
+    .not().isEmpty().withMessage('Should have a valid verification string'),
+
+  async (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    if (areValidationErrors(req, res)) return
+    if (!await checkRegistrationIdExist(req.params.registrationId, res)) return
+
+    const registration = res.locals.userRegistration
+    const redisVerificationString = await Redis.Instance.getRegistrationVerifyEmailLink(registration.id)
+
+    if (redisVerificationString !== req.body.verificationString) {
+      return res.fail({ status: HttpStatusCode.FORBIDDEN_403, message: 'Invalid verification string.' })
+    }
+
+    return next()
+  }
+]
+
+// ---------------------------------------------------------------------------
+
+export {
+  usersAskSendVerifyEmailValidator,
+  usersVerifyEmailValidator,
+
+  registrationVerifyEmailValidator
+}
-- 
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