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Verifier portal backchannel endpoint

This commit is contained in:
Daniel Armengod 2023-11-27 07:04:30 +01:00
parent fa5a2d172e
commit 737d2a7dce
5 changed files with 69 additions and 0 deletions
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4
idhub/urls.py
View File

@ -20,6 +20,7 @@ from django.urls import path, reverse_lazy
from .views import LoginView
from .admin import views as views_admin
from .user import views as views_user
from .verification_portal import views as views_verification_portal
app_name = 'idhub'
@ -171,4 +172,7 @@ urlpatterns = [
name='admin_import'),
path('admin/import/new', views_admin.ImportAddView.as_view(),
name='admin_import_add'),
path('verification_portal/verify/', views_verification_portal.verify,
name="verification_portal_verify")
]

0
idhub/verification_portal/__init__.py Normal file
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21
idhub/verification_portal/models.py Normal file
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@ -0,0 +1,21 @@
from django.db import models
class VPVerifyRequest(models.Model):
"""
`nonce` is an opaque random string used to lookup verification requests
`expected_credentials` is a JSON list of credential types that must be present in this VP.
Example: ["FinancialSituationCredential", "HomeConnectivitySurveyCredential"]
`expected_contents` is a JSON object that places optional constraints on the contents of the
returned VP.
Example: [{"FinancialSituationCredential": {"financial_vulnerability_score": "7"}}]
`action` is (for now) a JSON object describing the next steps to take if this verification
is successful. For example "send mail to <destination> with <subject> and <body>"
Example: {"action": "send_mail", "params": {"to": "orders@somconnexio.coop", "subject": "New client", "body": ...}
`submitted_on` is used (by a cronjob) to purge old entries that didn't complete verification
"""
nonce = models.CharField(max_length=50)
expected_credentials = models.CharField(max_length=255)
expected_contents = models.TextField()
action = models.TextField()
submitted_on = models.DateTimeField(auto_now=True)

43
idhub/verification_portal/views.py Normal file
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@ -0,0 +1,43 @@
import json
from django.core.mail import send_mail
from django.http import HttpResponse
from .models import VPVerifyRequest
from django.shortcuts import get_object_or_404
from more_itertools import flatten, unique_everseen
def verify(request):
assert request.method == "POST"
# TODO: use request.POST["presentation_submission"]
vp = json.loads(request.POST["vp_token"])
nonce = vp["nonce"]
# "vr" = verification_request
vr = get_object_or_404(VPVerifyRequest, nonce=nonce) # TODO: return meaningful error, not 404
# Get a list of all included verifiable credential types
included_credential_types = unique_everseen(flatten([
vc["type"] for vc in vp["verifiableCredential"]
]))
# Check that it matches what we requested
for requested_vc_type in json.loads(vr.expected_credentials):
if requested_vc_type not in included_credential_types:
raise Exception("You're missing some credentials we requested!") # TODO: return meaningful error
# Perform whatever action we have to do
action = json.loads(vr.action)
if action["action"] == "send_mail":
subject = action["params"]["subject"]
to_email = action["params"]["to"]
from_email = "noreply@verifier-portal"
body = request.POST["vp-token"]
send_mail(
subject,
body,
from_email,
[to_email]
)
elif action["action"] == "something-else":
pass
else:
raise Exception("Unknown action!")
return HttpResponse("OK! Your verifiable presentation was successfully presented.")

1
requirements.txt
View File

@ -10,3 +10,4 @@ didkit==0.3.2
jinja2==3.1.2
jsonref==1.1.0
pyld==2.0.3
more-itertools==10.1.0