add email token normalization

use regex to normalize email tokens

use token normalization function when generating tokens

packages/pds/src/account-manager/helpers/email-token.ts

@@ -1,14 +1,17 @@
 import { InvalidRequestError } from '@atproto/xrpc-server'
 import { MINUTE, lessThanAgoMs } from '@atproto/common'
-import { getRandomToken } from '../../api/com/atproto/server/util'
+import {
+  getEmailToken,
+  normalizeEmailToken,
+} from '../../api/com/atproto/server/util'
 import { AccountDb, EmailTokenPurpose } from '../db'
 
 export const createEmailToken = async (
   db: AccountDb,
   did: string,
   purpose: EmailTokenPurpose,
 ): Promise<string> => {
-  const token = getRandomToken().toUpperCase()
+  const token = getEmailToken()
   const now = new Date().toISOString()
   await db.executeWithRetry(
     db.db
@@ -73,7 +76,7 @@ export const assertValidTokenAndFindDid = async (
     .selectFrom('email_token')
     .selectAll()
     .where('purpose', '=', purpose)
-    .where('token', '=', token.toUpperCase())
+    .where('token', '=', normalizeEmailToken(token))
     .executeTakeFirst()
   if (!res) {
     throw new InvalidRequestError('Token is invalid', 'InvalidToken')

packages/pds/src/api/com/atproto/server/util.ts

@@ -22,12 +22,18 @@ export const genInvCodes = (cfg: ServerConfig, count: number): string[] => {
   return codes
 }
 
-// Formatted xxxxx-xxxxx where digits are in base32
-export const getRandomToken = () => {
-  const token = crypto.randomStr(8, 'base32').slice(0, 10)
-  return token.slice(0, 5) + '-' + token.slice(5, 10)
+// Random token formatted XXXXX-XXXXX where digits are in base32
+export const getEmailToken = () => {
+  return normalizeEmailToken(crypto.randomStr(8, 'base32'))
 }
 
+// Transforms a badly-formed email token to XXXXX-XXXXX
+// (i.e from xxXxxxx-xxx or xxxxxxxxxx)
+export const normalizeEmailToken = (input: string): string => {
+  const normalized = input.trim().toUpperCase().replace('-', ''); // normalize to XXXXXXXXXX
+  return normalized.slice(0, 5) + '-' + normalized.slice(5, 10); // insert hyphen
+};
+
 export const safeResolveDidDoc = async (
   ctx: AppContext,
   did: string,