mirror of
https://github.com/zulip/zulip.git
synced 2025-11-04 05:53:43 +00:00
22 lines
943 B
Python
22 lines
943 B
Python
from django.core.exceptions import ValidationError
|
|
from django.utils.translation import ugettext as _
|
|
|
|
import re
|
|
from typing import Text
|
|
|
|
def validate_domain(domain):
|
|
# type: (Text) -> None
|
|
if domain is None or len(domain) == 0:
|
|
raise ValidationError(_("Domain can't be empty."))
|
|
if '.' not in domain:
|
|
raise ValidationError(_("Domain must have at least one dot (.)"))
|
|
if domain[0] == '.' or domain[-1] == '.':
|
|
raise ValidationError(_("Domain cannot start or end with a dot (.)"))
|
|
for subdomain in domain.split('.'):
|
|
if not subdomain:
|
|
raise ValidationError(_("Consecutive '.' are not allowed."))
|
|
if subdomain[0] == '-' or subdomain[-1] == '-':
|
|
raise ValidationError(_("Subdomains cannot start or end with a '-'."))
|
|
if not re.match('^[a-z0-9-]*$', subdomain):
|
|
raise ValidationError(_("Domain can only have letters, numbers, '.' and '-'s."))
|