419 lines
13 KiB
Python
419 lines
13 KiB
Python
import os
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import json
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import base64
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import qrcode
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import logging
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import datetime
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import weasyprint
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import qrcode.image.svg
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from io import BytesIO
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from pathlib import Path
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from pyhanko.sign import fields, signers
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from pyhanko import stamp
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from pyhanko.pdf_utils import text
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from pyhanko.pdf_utils.incremental_writer import IncrementalPdfFileWriter
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from django.utils.translation import gettext_lazy as _
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from django.views.generic import View
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from django.views.generic.edit import (
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UpdateView,
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CreateView,
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DeleteView,
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FormView
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)
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from django.views.generic.base import TemplateView
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from django.shortcuts import get_object_or_404, redirect
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from django.urls import reverse_lazy
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from django.http import HttpResponse
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from django.contrib import messages
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from django.conf import settings
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from idhub.user.forms import (
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ProfileForm,
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RequestCredentialForm,
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DemandAuthorizationForm
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)
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from utils import certs
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from idhub.mixins import UserView
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from idhub.models import DID, VerificableCredential, Event
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class MyProfile(UserView):
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title = _("My profile")
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section = "MyProfile"
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class MyWallet(UserView):
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title = _("My wallet")
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section = "MyWallet"
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class DashboardView(UserView, TemplateView):
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template_name = "idhub/user/dashboard.html"
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title = _('Dashboard')
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subtitle = _('Events')
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icon = 'bi bi-bell'
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section = "Home"
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class ProfileView(MyProfile, UpdateView):
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template_name = "idhub/user/profile.html"
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subtitle = _('My personal data')
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icon = 'bi bi-person-gear'
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from_class = ProfileForm
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fields = ('first_name', 'last_name', 'email')
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success_url = reverse_lazy('idhub:user_profile')
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def get_object(self):
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return self.request.user
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def get_form(self):
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form = super().get_form()
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form.fields['first_name'].disabled = True
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form.fields['last_name'].disabled = True
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form.fields['email'].disabled = True
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return form
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def form_valid(self, form):
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return super().form_valid(form)
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class RolesView(MyProfile, TemplateView):
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template_name = "idhub/user/roles.html"
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subtitle = _('My roles')
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icon = 'fa-brands fa-critical-role'
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class GDPRView(MyProfile, TemplateView):
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template_name = "idhub/user/gdpr.html"
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subtitle = _('GDPR info')
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icon = 'bi bi-file-earmark-medical'
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class CredentialsView(MyWallet, TemplateView):
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template_name = "idhub/user/credentials.html"
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subtitle = _('Credential management')
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icon = 'bi bi-patch-check-fill'
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def get_context_data(self, **kwargs):
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context = super().get_context_data(**kwargs)
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creds = VerificableCredential.objects.filter(
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user=self.request.user
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)
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context.update({
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'credentials': creds,
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})
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return context
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class CredentialView(MyWallet, TemplateView):
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template_name = "idhub/user/credential.html"
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subtitle = _('Credential')
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icon = 'bi bi-patch-check-fill'
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def get(self, request, *args, **kwargs):
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self.pk = kwargs['pk']
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self.object = get_object_or_404(
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VerificableCredential,
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pk=self.pk,
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user=self.request.user
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)
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return super().get(request, *args, **kwargs)
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def get_context_data(self, **kwargs):
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context = super().get_context_data(**kwargs)
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context.update({
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'object': self.object,
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})
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return context
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class CredentialPdfView(MyWallet, TemplateView):
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template_name = "certificates/4_Model_Certificat.html"
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subtitle = _('Credential management')
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icon = 'bi bi-patch-check-fill'
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file_name = "certificate.pdf"
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_pss = '123456'
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def get(self, request, *args, **kwargs):
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pk = kwargs['pk']
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self.user = self.request.user
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self.object = get_object_or_404(
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VerificableCredential,
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pk=pk,
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public=True,
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user=self.request.user
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)
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self.url_id = "{}/public/credentials/{}".format(
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settings.DOMAIN.strip("/"),
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self.object.hash
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)
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data = self.build_certificate()
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if DID.objects.filter(eidas1=True).exists():
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doc = self.insert_signature(data)
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else:
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doc = data
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response = HttpResponse(doc, content_type="application/pdf")
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response['Content-Disposition'] = 'attachment; filename={}'.format(self.file_name)
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return response
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def get_context_data(self, **kwargs):
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context = super().get_context_data(**kwargs)
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this_folder = str(Path.cwd())
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path_img_sig = "idhub/static/images/4_Model_Certificat_html_58d7f7eeb828cf29.jpg"
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img_signature = next(Path.cwd().glob(path_img_sig))
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with open(img_signature, 'rb') as _f:
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img_sig = base64.b64encode(_f.read()).decode('utf-8')
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path_img_head = "idhub/static/images/4_Model_Certificat_html_7a0214c6fc8f2309.jpg"
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img_header= next(Path.cwd().glob(path_img_head))
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with open(img_header, 'rb') as _f:
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img_head = base64.b64encode(_f.read()).decode('utf-8')
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qr = self.generate_qr_code(self.url_id)
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first_name = self.user.first_name and self.user.first_name.upper() or ""
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last_name = self.user.first_name and self.user.last_name.upper() or ""
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document_id = "0000000-L"
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course = "COURSE 1"
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address = "ADDRESS"
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date_course = datetime.datetime.now()
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n_hours = 40
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n_lections = 5
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issue_date = datetime.datetime.now()
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context.update({
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'object': self.object,
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"image_signature": img_sig,
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"image_header": img_head,
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"first_name": first_name,
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"last_name": last_name,
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"document_id": document_id,
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"course": course,
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"address": address,
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"date_course": date_course,
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"n_hours": n_hours,
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"n_lections": n_lections,
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"issue_date": issue_date,
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"qr": qr
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})
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return context
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def build_certificate(self):
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doc = self.render_to_response(context=self.get_context_data())
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doc.render()
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pdf = weasyprint.HTML(string=doc.content)
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return pdf.write_pdf()
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def generate_qr_code(self, data):
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qr = qrcode.QRCode(
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version=1,
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error_correction=qrcode.constants.ERROR_CORRECT_L,
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box_size=10,
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border=4,
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)
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qr.add_data(data)
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qr.make(fit=True)
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img_buffer = BytesIO()
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img = qr.make_image(fill_color="black", back_color="white")
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img.save(img_buffer, format="PNG")
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return base64.b64encode(img_buffer.getvalue()).decode('utf-8')
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def get_pfx_data(self):
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did = DID.objects.filter(eidas1=True).first()
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if not did:
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return None, None
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key_material = json.loads(did.key_material)
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cert = key_material.get("cert")
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passphrase = key_material.get("passphrase")
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if cert and passphrase:
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return base64.b64decode(cert), passphrase.encode('utf-8')
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return None, None
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def signer_init(self):
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pfx_data, passphrase = self.get_pfx_data()
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s = certs.load_cert(
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pfx_data, passphrase
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)
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return s
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def insert_signature(self, doc):
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sig = self.signer_init()
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if not sig:
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return
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_buffer = BytesIO()
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_buffer.write(doc)
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w = IncrementalPdfFileWriter(_buffer)
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fields.append_signature_field(
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w, sig_field_spec=fields.SigFieldSpec(
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'Signature', box=(150, 100, 450, 150)
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)
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)
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meta = signers.PdfSignatureMetadata(field_name='Signature')
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pdf_signer = signers.PdfSigner(
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meta, signer=sig, stamp_style=stamp.TextStampStyle(
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stamp_text='Signed by: %(signer)s\nTime: %(ts)s\nURL: %(url)s',
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text_box_style=text.TextBoxStyle()
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)
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)
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_bf_out = BytesIO()
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pdf_signer.sign_pdf(w, output=_bf_out, appearance_text_params={'url': self.url_id})
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return _bf_out.read()
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class CredentialJsonView(MyWallet, TemplateView):
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def get(self, request, *args, **kwargs):
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pk = kwargs['pk']
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self.object = get_object_or_404(
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VerificableCredential,
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pk=pk,
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user=self.request.user
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)
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response = HttpResponse(self.object.data, content_type="application/json")
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response['Content-Disposition'] = 'attachment; filename={}'.format("credential.json")
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return response
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class PublicCredentialJsonView(View):
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def get(self, request, *args, **kwargs):
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pk = kwargs['pk']
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self.object = get_object_or_404(
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VerificableCredential,
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hash=pk,
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)
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response = HttpResponse(self.object.data, content_type="application/json")
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response['Content-Disposition'] = 'attachment; filename={}'.format("credential.json")
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return response
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class CredentialsRequestView(MyWallet, FormView):
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template_name = "idhub/user/credentials_request.html"
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subtitle = _('Credential request')
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icon = 'bi bi-patch-check-fill'
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form_class = RequestCredentialForm
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success_url = reverse_lazy('idhub:user_credentials')
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def get_form_kwargs(self):
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kwargs = super().get_form_kwargs()
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kwargs['user'] = self.request.user
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return kwargs
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def form_valid(self, form):
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cred = form.save()
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if cred:
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messages.success(self.request, _("The credential was issued successfully!"))
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Event.set_EV_CREDENTIAL_ISSUED_FOR_USER(cred)
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Event.set_EV_CREDENTIAL_ISSUED(cred)
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url = self.request.session.pop('next_url', None)
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if url:
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return redirect(url)
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else:
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messages.error(self.request, _("The credential does not exist!"))
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return super().form_valid(form)
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class DemandAuthorizationView(MyWallet, FormView):
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template_name = "idhub/user/credentials_presentation.html"
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subtitle = _('Credential presentation')
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icon = 'bi bi-patch-check-fill'
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form_class = DemandAuthorizationForm
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success_url = reverse_lazy('idhub:user_demand_authorization')
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def get_form_kwargs(self):
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kwargs = super().get_form_kwargs()
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kwargs['user'] = self.request.user
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return kwargs
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def form_valid(self, form):
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try:
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authorization = form.save()
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except Exception:
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txt = _("Problems connecting with {url}").format(
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url=form.org.response_uri
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)
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messages.error(self.request, txt)
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return super().form_valid(form)
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if authorization:
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return redirect(authorization)
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else:
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messages.error(self.request, _("Error sending credential!"))
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return super().form_valid(form)
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class DidsView(MyWallet, TemplateView):
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template_name = "idhub/user/dids.html"
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subtitle = _('Identities (DIDs)')
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icon = 'bi bi-patch-check-fill'
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def get_context_data(self, **kwargs):
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context = super().get_context_data(**kwargs)
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context.update({
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'dids': self.request.user.dids,
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})
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return context
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class DidRegisterView(MyWallet, CreateView):
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template_name = "idhub/user/did_register.html"
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subtitle = _('Add a new Identity (DID)')
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icon = 'bi bi-patch-check-fill'
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wallet = True
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model = DID
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fields = ('label',)
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success_url = reverse_lazy('idhub:user_dids')
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object = None
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def form_valid(self, form):
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form.instance.user = self.request.user
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form.instance.set_did()
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form.save()
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messages.success(self.request, _('DID created successfully'))
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Event.set_EV_DID_CREATED(form.instance)
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Event.set_EV_DID_CREATED_BY_USER(form.instance)
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return super().form_valid(form)
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class DidEditView(MyWallet, UpdateView):
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template_name = "idhub/user/did_register.html"
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subtitle = _('Identities (DIDs)')
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icon = 'bi bi-patch-check-fill'
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wallet = True
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model = DID
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fields = ('label',)
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success_url = reverse_lazy('idhub:user_dids')
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def get(self, request, *args, **kwargs):
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self.pk = kwargs['pk']
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self.object = get_object_or_404(self.model, pk=self.pk)
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return super().get(request, *args, **kwargs)
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def form_valid(self, form):
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user = form.save()
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messages.success(self.request, _('DID updated successfully'))
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return super().form_valid(form)
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class DidDeleteView(MyWallet, DeleteView):
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subtitle = _('Identities (DIDs)')
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icon = 'bi bi-patch-check-fill'
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wallet = True
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model = DID
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success_url = reverse_lazy('idhub:user_dids')
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def get(self, request, *args, **kwargs):
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self.pk = kwargs['pk']
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self.object = get_object_or_404(self.model, pk=self.pk)
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Event.set_EV_DID_DELETED(self.object)
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self.object.delete()
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messages.success(self.request, _('DID delete successfully'))
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return redirect(self.success_url)
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