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validators.py
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validators.py
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# -*- coding: utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2013 CERN.
##
## Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## Invenio is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""
invenio.modules.accounts.validators
-----------------------------------
Implements account validators.
"""
import re
from flask import current_app
from sqlalchemy.exc import SQLAlchemyError
from flask.ext.wtf import validators
from .models import User
_ = lambda x: x
re_invalid_nickname = re.compile(""".*[,'@]+.*""")
def wash_login_method(login_method):
"""Wash the :param:`login_method` that came from the web input form.
:param login_method: Wanted login_method value as it came from the
web input form.
:type login_method: string
:return: Washed version of login_method. If the login_method
value is valid, then return it. If it is not valid, then
return `Local' (the default login method).
"""
if login_method in current_app.config.get('CFG_EXTERNAL_AUTHENTICATION',
[]):
return login_method
else:
return current_app.config.get('CFG_AUTHENTICATION_METHOD_DEFAULT',
'Local')
def validate_nickname_or_email(form, field):
try:
User.query.filter(User.nickname == field.data).one()
except SQLAlchemyError:
try:
User.query.filter(User.email == field.data).one()
except SQLAlchemyError:
raise validators.ValidationError(
_('Not valid nickname or email: %s') % (field.data, ))
def validate_nickname(nickname):
"""Check whether wanted NICKNAME supplied by the user is valid.
At the moment we just check whether it is not empty, does not
contain blanks or @, is not equal to `guest', etc.
This check relies on re_invalid_nickname regexp (see above)
Return 1 if nickname is okay, return 0 if it is not.
"""
if nickname and \
not(nickname.startswith(' ') or nickname.endswith(' ')) and \
nickname.lower() != 'guest':
if not re_invalid_nickname.match(nickname):
raise validators.ValidationError(
_("Desired nickname %s is invalid.") % nickname
)
def validate_email(email):
"""Check whether wanted EMAIL address supplied by the user is valid.
At the moment we just check whether it contains '@' and whether
it doesn't contain blanks. We also check the email domain if
CFG_ACCESS_CONTROL_LIMIT_REGISTRATION_TO_DOMAIN is set.
"""
CFG_ACCESS_CONTROL_LIMIT_REGISTRATION_TO_DOMAIN = current_app.config.get(
'CFG_ACCESS_CONTROL_LIMIT_REGISTRATION_TO_DOMAIN')
if (email.find("@") <= 0) or (email.find(" ") > 0):
raise validators.ValidationError(
_("Supplied email address %s is invalid.") % email
)
elif CFG_ACCESS_CONTROL_LIMIT_REGISTRATION_TO_DOMAIN:
if not email.endswith(CFG_ACCESS_CONTROL_LIMIT_REGISTRATION_TO_DOMAIN):
raise validators.ValidationError(
_("Supplied email address %s is invalid.") % email
)

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