Skip to content
Permalink
0936ea2533
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
Go to file
 
 
Cannot retrieve contributors at this time
173 lines (152 sloc) 7.09 KB
from fido2.client import Fido2Client
from fido2.server import Fido2Server, PublicKeyCredentialRpEntity
from fido2.webauthn import AttestationObject, AuthenticatorData, CollectedClientData
from django.template.context_processors import csrf
from django.views.decorators.csrf import csrf_exempt
from django.shortcuts import render
# from django.template.context import RequestContext
import simplejson
from fido2 import cbor
from django.http import HttpResponse
from django.conf import settings
from .models import *
from fido2.utils import websafe_decode, websafe_encode
from fido2.webauthn import AttestedCredentialData
from .views import login, reset_cookie
import datetime
from .Common import get_redirect_url
from django.utils import timezone
def recheck(request):
"""Starts FIDO2 recheck"""
context = csrf(request)
context["mode"] = "recheck"
request.session["mfa_recheck"] = True
return render(request, "FIDO2/recheck.html", context)
def getServer():
"""Get Server Info from settings and returns a Fido2Server"""
rp = PublicKeyCredentialRpEntity(id=settings.FIDO_SERVER_ID, name=settings.FIDO_SERVER_NAME)
return Fido2Server(rp)
def begin_registeration(request):
"""Starts registering a new FIDO Device, called from API"""
server = getServer()
registration_data, state = server.register_begin({
u'id': request.user.username.encode("utf8"),
u'name': (request.user.first_name + " " + request.user.last_name),
u'displayName': request.user.username,
}, getUserCredentials(request.user.username))
request.session['fido_state'] = state
return HttpResponse(cbor.encode(registration_data), content_type = 'application/octet-stream')
@csrf_exempt
def complete_reg(request):
"""Completes the registeration, called by API"""
try:
data = cbor.decode(request.body)
client_data = CollectedClientData(data['clientDataJSON'])
att_obj = AttestationObject((data['attestationObject']))
server = getServer()
auth_data = server.register_complete(
request.session['fido_state'],
client_data,
att_obj
)
encoded = websafe_encode(auth_data.credential_data)
uk = User_Keys()
uk.username = request.user.username
uk.properties = {"device": encoded, "type": att_obj.fmt, }
uk.owned_by_enterprise = getattr(settings, "MFA_OWNED_BY_ENTERPRISE", False)
uk.key_type = "FIDO2"
uk.save()
return HttpResponse(simplejson.dumps({'status': 'OK'}))
except Exception as exp:
import traceback
print(traceback.format_exc())
try:
from raven.contrib.django.raven_compat.models import client
client.captureException()
except:
pass
return HttpResponse(simplejson.dumps({'status': 'ERR', "message": "Error on server, please try again later"}))
def start(request):
"""Start Registeration a new FIDO Token"""
context = csrf(request)
context.update(get_redirect_url())
return render(request, "FIDO2/Add.html", context)
def getUserCredentials(username):
credentials = []
for uk in User_Keys.objects.filter(username = username, key_type = "FIDO2"):
credentials.append(AttestedCredentialData(websafe_decode(uk.properties["device"])))
return credentials
def auth(request):
context = csrf(request)
return render(request, "FIDO2/Auth.html", context)
def authenticate_begin(request):
server = getServer()
credentials = getUserCredentials(request.session.get("base_username", request.user.username))
auth_data, state = server.authenticate_begin(credentials)
request.session['fido_state'] = state
return HttpResponse(cbor.encode(auth_data), content_type = "application/octet-stream")
@csrf_exempt
def authenticate_complete(request):
try:
credentials = []
username = request.session.get("base_username", request.user.username)
server = getServer()
credentials = getUserCredentials(username)
data = cbor.decode(request.body)
credential_id = data['credentialId']
client_data = CollectedClientData(data['clientDataJSON'])
auth_data = AuthenticatorData(data['authenticatorData'])
signature = data['signature']
try:
cred = server.authenticate_complete(
request.session.pop('fido_state'),
credentials,
credential_id,
client_data,
auth_data,
signature
)
except ValueError:
return HttpResponse(simplejson.dumps({'status': "ERR",
"message": "Wrong challenge received, make sure that this is your security and try again."}),
content_type = "application/json")
except Exception as excep:
try:
from raven.contrib.django.raven_compat.models import client
client.captureException()
except:
pass
return HttpResponse(simplejson.dumps({'status': "ERR",
"message": excep.message}),
content_type = "application/json")
if request.session.get("mfa_recheck", False):
import time
request.session["mfa"]["rechecked_at"] = time.time()
return HttpResponse(simplejson.dumps({'status': "OK"}),
content_type = "application/json")
else:
import random
keys = User_Keys.objects.filter(username = username, key_type = "FIDO2", enabled = 1)
for k in keys:
if AttestedCredentialData(websafe_decode(k.properties["device"])).credential_id == cred.credential_id:
k.last_used = timezone.now()
k.save()
mfa = {"verified": True, "method": "FIDO2", 'id': k.id}
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
try:
authenticated = request.user.is_authenticated
except:
authenticated = request.user.is_authenticated()
if not authenticated:
res = login(request)
if not "location" in res: return reset_cookie(request)
return HttpResponse(simplejson.dumps({'status': "OK", "redirect": res["location"]}),
content_type = "application/json")
return HttpResponse(simplejson.dumps({'status': "OK"}),
content_type = "application/json")
except Exception as exp:
return HttpResponse(simplejson.dumps({'status': "ERR", "message": exp.message}),
content_type = "application/json")