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84 lines
2.4 KiB
84 lines
2.4 KiB
from django.shortcuts import render
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from django.http import HttpResponse, JsonResponse
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from django.views.decorators.csrf import csrf_exempt
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from .models import ASSNotification
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from django.conf import settings
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import json, jwt
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import base64
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from OpenSSL.crypto import (
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X509Store,
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X509StoreContext,
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X509StoreContextError,
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load_certificate,
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FILETYPE_ASN1,
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FILETYPE_PEM
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)
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def index(request):
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return HttpResponse("Hello, world. You're at the subs index.")
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def test(request):
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KEY_FILE = settings.ASS_KEY_FILE
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with open(KEY_FILE,'r') as key_file:
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key = ''.join(key_file.readlines())
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return HttpResponse(key)
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@csrf_exempt
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def app_store_webhook(request):
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data = request.body.decode('utf-8')
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# Parse the JSON payload
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fulljson = json.loads(data)
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signedPayload = fulljson['signedPayload']
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KEY_FILE = settings.ASS_KEY_FILE
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with open(KEY_FILE,'r') as key_file:
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key = ''.join(key_file.readlines())
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decodedPayload = _decode_jws(token, algorithms=algorithms)
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# decodedPayload = jwt.decode(signedPayload, key, algorithms=['ES256'])
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#print('hell yeah!' + str(key))
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#logger.debug('test getLogger' + str(key))
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notification = ASSNotification(
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content=decodedPayload,
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)
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notification.save()
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return JsonResponse({'status': 'success'})
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def _decode_jws(token, root_cert_path, algorithms):
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try:
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header = jwt.get_unverified_header(token)
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# the first cert contains the public key used to sign the jwt
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first_cert_data = header["x5c"][0]
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first_cert_data = add_labels(first_cert_data)
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first_cert = load_certificate(FILETYPE_PEM, first_cert_data)
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# the other certs are an x5c (X.509 certificate chain)
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chain_datas = header["x5c"][1:]
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chain_datas = [add_labels(cd) for cd in chain_datas]
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chain = [load_certificate(FILETYPE_PEM, cd) for cd in chain_datas]
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public_key = first_cert.get_pubkey().to_cryptography_key()
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store = X509Store()
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store.add_cert(_get_root_cert(root_cert_path))
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ctx = X509StoreContext(store=store, certificate=first_cert, chain=chain)
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ctx.verify_certificate()
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return jwt.decode(token, public_key, algorithms=algorithms)
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except (ValueError, KeyError, jwt.exceptions.PyJWTError, X509StoreContextError) as err:
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raise InvalidTokenError from err
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def add_labels(key: str) -> bytes:
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return ("-----BEGIN CERTIFICATE-----\n" + key + "\n-----END CERTIFICATE-----").encode()
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