115 lines
4.5 KiB
Python
115 lines
4.5 KiB
Python
from django.shortcuts import render
|
|
from django.views.decorators.cache import never_cache
|
|
from django.template.context_processors import csrf
|
|
from django.contrib.auth.hashers import make_password, PBKDF2PasswordHasher
|
|
from django.http import HttpResponse
|
|
from .Common import get_redirect_url
|
|
from .models import *
|
|
import simplejson
|
|
import random
|
|
import string
|
|
import datetime
|
|
|
|
class Hash(PBKDF2PasswordHasher):
|
|
algorithm = 'pbkdf2_sha256_custom'
|
|
iterations = settings.RECOVERY_ITERATION
|
|
|
|
def token_left(request, username=None):
|
|
if not username and request:
|
|
username = request.user.username
|
|
uk = User_Keys.objects.filter(username=username, key_type = "RECOVERY")
|
|
keyLeft=0
|
|
for key in uk:
|
|
keyEnabled = key.properties["enabled"]
|
|
for i in range(len(keyEnabled)):
|
|
if keyEnabled[i]:
|
|
keyLeft += 1
|
|
return keyLeft
|
|
|
|
def delTokens(request):
|
|
#Only when all MFA have been deactivated, or to generate new !
|
|
#We iterate only to clean if any error happend and multiple entry of RECOVERY created for one user
|
|
for key in User_Keys.objects.filter(username=request.user.username, key_type = "RECOVERY"):
|
|
if key.username == request.user.username:
|
|
key.delete()
|
|
|
|
def randomGen(n):
|
|
return ''.join(random.choice(string.ascii_uppercase + string.ascii_lowercase + string.digits) for _ in range(n))
|
|
|
|
|
|
@never_cache
|
|
def genTokens(request):
|
|
#Delete old ones
|
|
delTokens(request)
|
|
number = 5
|
|
#Then generate new one
|
|
salt = randomGen(15)
|
|
hashedKeys = []
|
|
clearKeys = []
|
|
for i in range(5):
|
|
token = randomGen(5) + "-" + randomGen(5)
|
|
hashedToken = make_password(token, salt, 'pbkdf2_sha256_custom')
|
|
hashedKeys.append(hashedToken)
|
|
clearKeys.append(token)
|
|
uk=User_Keys()
|
|
uk.username = request.user.username
|
|
uk.properties={"secret_keys":hashedKeys, "enabled":[True for j in range(5)], "salt":salt}
|
|
uk.key_type="RECOVERY"
|
|
uk.enabled = False
|
|
uk.save()
|
|
return HttpResponse(simplejson.dumps({"keys":clearKeys}))
|
|
|
|
|
|
def verify_login(request, username,token):
|
|
for key in User_Keys.objects.filter(username=username, key_type = "RECOVERY"):
|
|
secret_keys = key.properties["secret_keys"]
|
|
salt = key.properties["salt"]
|
|
hashedToken = make_password(token, salt, "pbkdf2_sha256_custom")
|
|
for i in range(len(secret_keys)):
|
|
if hashedToken == secret_keys[i] and key.properties["enabled"][i]:
|
|
key.properties["enabled"][i] = False
|
|
key.save()
|
|
return [True, key.id, token_left(None, username) == 0]
|
|
return [False]
|
|
|
|
def getTokenLeft(request):
|
|
enable = 0
|
|
for key in User_Keys.objects.filter(username=request.user.username, key_type = "RECOVERY"):
|
|
tokenStatus = key.properties["enabled"]
|
|
for i in range(len(tokenStatus)):
|
|
enable += 1
|
|
return HttpResponse(simplejson.dumps({"left":enable}))
|
|
|
|
@never_cache
|
|
def auth(request):
|
|
from .views import login
|
|
context=csrf(request)
|
|
if request.method=="POST":
|
|
tokenLength = len(request.POST["otp"])
|
|
if tokenLength == 11 and "RECOVERY" not in settings.MFA_UNALLOWED_METHODS:
|
|
#Backup code check
|
|
resBackup=verify_login(request, request.session["base_username"], token=request.POST["otp"])
|
|
if resBackup[0]:
|
|
mfa = {"verified": True, "method": "RECOVERY","id":resBackup[1], "lastBackup":resBackup[2]}
|
|
if getattr(settings, "MFA_RECHECK", False):
|
|
mfa["next_check"] = datetime.datetime.timestamp((datetime.datetime.now()
|
|
+ datetime.timedelta(
|
|
seconds=random.randint(settings.MFA_RECHECK_MIN, settings.MFA_RECHECK_MAX))))
|
|
request.session["mfa"] = mfa
|
|
if resBackup[2]:
|
|
#If the last bakup code has just been used, we return a response insead of redirecting to login
|
|
context["lastBackup"] = True
|
|
return render(request,"TOTP/Auth.html", context)
|
|
return login(request)
|
|
elif request.method=="GET":
|
|
mfa = request.session["mfa"]
|
|
if mfa and mfa["verified"] and mfa["lastBackup"]:
|
|
return login(request)
|
|
|
|
context["invalid"]=True
|
|
return render(request,"TOTP/Auth.html", context)
|
|
|
|
@never_cache
|
|
def start(request):
|
|
"""Start Managing recovery tokens"""
|
|
return render(request,"RECOVERY/Add.html",get_redirect_url()) |