From 6850fd69c6548618cf1ac7a0e0033654e2424072 Mon Sep 17 00:00:00 2001
From: Dustin Kaiser <8209087+mrnicegyu11@users.noreply.github.com>
Date: Wed, 16 Oct 2024 03:34:45 +0200
Subject: [PATCH] Enhance email validation: Allow top-level domains with 5
 letters (#2856)

### What problem does this PR solve?

Currently singing up to ragflow using a mail-adress with associated
top-level domains that have more than 4 chars will fail due to a regex
validation that enforces just this.

In our use case, we'd like to use e-mail addresses with `.swiss`
top-level domains, which is a valid TLD associated with the country
switzerland in the IANA root database.

This change makes the validation accept 5-letter TLDs.


### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] Other (please describe): Making validation for lenient, accepting
more valid input.
---
 api/apps/user_app.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/api/apps/user_app.py b/api/apps/user_app.py
index 1535446d3..0c113dcde 100644
--- a/api/apps/user_app.py
+++ b/api/apps/user_app.py
@@ -354,7 +354,7 @@ def user_add():
     email_address = req["email"]
 
     # Validate the email address
-    if not re.match(r"^[\w\._-]+@([\w_-]+\.)+[\w-]{2,4}$", email_address):
+    if not re.match(r"^[\w\._-]+@([\w_-]+\.)+[\w-]{2,5}$", email_address):
         return get_json_result(data=False,
                                retmsg=f'Invalid email address: {email_address}!',
                                retcode=RetCode.OPERATING_ERROR)