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[TASK] Add a restrictive username validation.

This commit is contained in:
Jan Philipp Timme 2014-10-03 13:51:19 +02:00
parent b8406c6c80
commit e71e259255
1 changed files with 12 additions and 3 deletions
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15
settings.example.py
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@ -33,6 +33,15 @@ def username_validator(form, field):
""" Since usernames will be used for subdomains, take your time here. """ """ Since usernames will be used for subdomains, take your time here. """
username = field.data username = field.data
if len(username) < 4: if len(username) < 4:
raise ValidationError(_('Username must be at least 4 characters long')) raise ValidationError(_('Username must be at least 4 characters long.'))
if not username.isalnum(): if username != username.lower():
raise ValidationError(_('Username may only contain letters and numbers')) raise ValidationError(_('Please use lower case letters, numbers, dash and underscore only.'))
if username in ['admin', 'root', 'hostmaster', 'webmaster', 'www']:
raise ValidationError(_('This username is not allowed.'))
import re
regex = '([a-z])([-_a-z0-9]){2,40}'
pattern = re.compile(regex)
if pattern.match(username) != None:
return
else:
raise ValidationError(_('Username must comply with this regex: "' + regex + '".'))