- Author:
- volksman
- Posted:
- September 19, 2008
- Language:
- Python
- Version:
- 1.0
- Score:
- 1 (after 1 ratings)
I was trying to create a custom field to use the mysql encrypt() function on some data I wanted to store in the DB. initcrash on IRC pointed me to this code which I butchered as best as my little brain could. Amazingly enough I got it working (thanks to a couple answers from initcrash).
If anyone can clean this up that would be great. I'm also trying to figure out how I can a) create password reset link in the admin interface for this field without displaying the field or b) decrypt it so that the password field is pre-populated with the decrypted password. Otherwise it is submitting the encrypted string as a new password.
Anyways, I'm only a week or two into Django with no python experience so any suggestions are very welcome.
Hope this helps someone!
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | from django.db import models
from django.utils.encoding import smart_unicode
from django.conf import settings
from django.utils.functional import curry
from django import forms
import urllib
import crypt
class EncryptedField(models.CharField):
def __init__(self, verbose_name=None, cipher_key=None, **kwargs):
self.input_type = "password"
self.key = smart_unicode(kwargs.pop('cipher_key', settings.SECRET_KEY))
models.CharField.__init__(self, verbose_name=verbose_name, max_length=20, **kwargs)
def encrypt(self, cad, key=None):
if not key:
key = settings.SECRET_KEY
assert (isinstance(cad, unicode)), "cad must be an unicode string."
else:
assert (isinstance(cad, unicode) and isinstance(key, unicode)), "cad and key must be unicode strings."
return crypt.crypt(cad, key)
def _encrypt(self, value):
if value is not None:
return self.encrypt(smart_unicode(value), self.key)
else:
return None
def get_manipulator_field_objs(self):
return [oldforms.PasswordField]
def get_internal_type(self):
return "TextField"
def get_db_prep_save(self, value):
value = self._encrypt(value)
return super(EncryptedField, self).get_db_prep_save(value)
def formfield(self, **kwargs):
defaults = {'form_class': forms.CharField}
defaults.update(kwargs)
defaults['widget'] = forms.PasswordInput()
return super(EncryptedField, self).formfield(**defaults)
|
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