Import user of django to firebase

import_django_to_firebase.py

import re
import base64
from passlib.hash import pbkdf2_sha256, django_pbkdf2_sha256
from passlib.utils import to_bytes, to_native_str


"""
The django password property has the hash in base64, and the salt not, so, the salt must have to be pass to base64 format to make it work.

auth:import y auth:export docs: https://firebase.google.com/docs/cli/auth?hl=es-419

$ firebase auth:import sandbox/account_file.csv --hash-algo=PBKDF2_SHA256 --rounds=20000 --project <project_name>

The exmaple django 1.8 password is: pbkdf2_sha256$20000$VVEU1GnGCr0M$7ZtXwcAIAZXICBYXb82FVeCJAjdfWrBZ11gVzb2UGVc= 

The salt source string is VVEU1GnGCr0M 
The salt in base64 is VlZFVTFHbkdDcjBN

account_file.csv
555000444,[email protected],false,7ZtXwcAIAZXICBYXb82FVeCJAjdfWrBZ11gVzb2UGVc=,VlZFVTFHbkdDcjBN,,,,,,,,,,,,,,,,,,,,,,


[django_pbkdf2_sha256] != [pbkdf2_sha256_hash] they they differ slightly:  

django_pbkdf2_sha256    >>>  pbkdf2_sha256$20000$VVEU1GnGCr0M$7ZtXwcAIAZXICBYXb82FVeCJAjdfWrBZ11gVzb2UGVc=
pbkdf2_sha256_hash      >>>  $pbkdf2-sha256$20000$Z29vZ2xl$PtFLyZHJJucUa2KBg1iJeVJsivis8JimRhFifRRKlFc

django_pbkdf2_sha256    >>>    ... _   
pbkdf2_sha256_hash      >>>  $ ... -
"""

# Hash generate by django 1.8
django_1_8_password = "pbkdf2_sha256$20000$VVEU1GnGCr0M$7ZtXwcAIAZXICBYXb82FVeCJAjdfWrBZ11gVzb2UGVc="


def getBase64 (s):
    """
    s: string 
    """  
    return base64.b64encode(to_bytes(s))

def getHASH (salt, rounds, password): 
    """
    salt: string ~ is internally parse by to_bytes function
    rounds: number
    password: string


    django 1.8 has 20000 ROUNDS or Iterations 
    django 1.11 has 36000 ROUNDS or Iterations
    """

    return pbkdf2_sha256.using(salt=to_bytes(salt),rounds=rounds).hash(password)

pbkdf2_sha256_hash = getHASH('google', 20000, 'aA123456*')

assert pbkdf2_sha256.identify(pbkdf2_sha256_hash), "pbkdf2_sha256_hash is not valid pbkdf2_sha256 algorithm."

assert pbkdf2_sha256.verify('aA123456*', pbkdf2_sha256_hash), "pbkdf2_sha256_hash (pbkdf2_sha256 ~ algorithm) with the PASSWORD: aA123456*, is not valid."

# Is a negation >>> The hash is not valid pbkdf2_sha256 algorithm
assert not pbkdf2_sha256.identify(django_1_8_password), "is valid [pbkdf2_sha256] algorithm."

assert django_pbkdf2_sha256.identify(django_1_8_password), "is not valid [django_pbkdf2_sha256] algorithm."



print('pbkdf2_sha256_hash >>> ', pbkdf2_sha256_hash)

salt_in_B64 = getBase64('VVEU1GnGCr0M')

print('Salt in B64 >>>', salt_in_B64) # VlZFVTFHbkdDcjBN