added unsalted SHA256 password hasher for backward compat

# -*- coding: utf-8 -*-

# Generated by Django 1.9 on 2015-12-24 01:50

from __future__ import unicode_literals

import re

from django.db import migrations

def update_passwd_hashes(apps, schema_editor):

	User = apps.get_model('custom_auth', 'User')

	for user in User.objects.all():

		if re.match(r'^[a-z0-9]{64}$', user.password or '', re.I):

			user.password = 'sha256_unsalted${0}'.format(user.password)

			user.save()

class Migration(migrations.Migration):

    dependencies = [

        ('custom_auth', '0003_add_user'),

    ]

    operations = [

		migrations.RunPython(update_passwd_hashes),

    ]

import hashlib

import passlib.hash

from django.contrib.auth import hashers

		algorithm = self.algorithm

		assert encoded.startswith(algorithm)

		return encoded[len(algorithm):]

class UnsaltedSHA256PasswordHasher(hashers.BasePasswordHasher):

	""" SHA256 unsalted, single pass hash """

	digest = hashlib.sha256

	algorithm = 'sha256_unsalted'

	def verify(self, password, encoded):

		return self.encode(password) == encoded

	def encode(self, password, salt=None):

		return '{0}${1}'.format(

			self.algorithm,

			self.digest(password.encode('utf-8')).hexdigest(),

		)

	def safe_summary(self, encoded):

		algo, hash = encoded.split('$', 1)

		assert algo == self.algorithm

		return {

			'algorithm': self.algorithm,

			'hash': hashers.mask_hash(hash),

		}

AUTH_USER_MODEL = 'custom_auth.User'

PASSWORD_HASHERS = (

	'kodo_sso.custom_auth.pass_hashers.SHA256CryptPasswordHasher',

	'kodo_sso.custom_auth.pass_hashers.UnsaltedSHA256PasswordHasher',

)