root / snf-astakos-app / astakos / im / fields.py @ 27e51b28
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# Copyright 2013 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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import re |
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from django.utils.translation import ugettext as _ |
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from django.utils.encoding import smart_str |
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from django.utils.encoding import force_unicode as force_text |
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from django import forms |
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class EmailValidator(object): |
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"""
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Email validator. Backported from django 1.6
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"""
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message = _('Enter a valid email address.')
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code = 'invalid'
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user_regex = re.compile( |
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r"(^[-!#$%&'*+/=?^_`{}|~0-9A-Z]+(\.[-!#$%&'*+/=?^_`{}|~0-9A-Z]+)*$" # dot-atom |
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r'|^"([\001-\010\013\014\016-\037!#-\[\]-\177]|\\[\001-\011\013\014\016-\177])*"$)', # quoted-string |
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re.IGNORECASE) |
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domain_regex = re.compile( |
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r'(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+(?:[A-Z]{2,6}|[A-Z0-9-]{2,})$' # domain |
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# literal form, ipv4 address (SMTP 4.1.3)
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r'|^\[(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}\]$',
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re.IGNORECASE) |
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domain_whitelist = ['localhost']
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def __init__(self, message=None, code=None, whitelist=None): |
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if message is not None: |
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self.message = message
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if code is not None: |
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self.code = code
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if whitelist is not None: |
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self.domain_whitelist = whitelist
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def __call__(self, value): |
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value = force_text(value) |
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if not value or '@' not in value: |
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raise forms.ValidationError(self.message, code=self.code) |
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user_part, domain_part = value.rsplit('@', 1) |
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if not self.user_regex.match(user_part): |
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raise forms.ValidationError(self.message, code=self.code) |
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if (not domain_part in self.domain_whitelist and |
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not self.domain_regex.match(domain_part)): |
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# Try for possible IDN domain-part
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try:
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domain_part = domain_part.encode('idna').decode('ascii') |
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if not self.domain_regex.match(domain_part): |
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raise forms.ValidationError(self.message, code=self.code) |
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else:
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return
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except UnicodeError: |
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pass
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raise forms.ValidationError(self.message, code=self.code) |
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class EmailField(forms.EmailField): |
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default_validators = [EmailValidator()] |