286 lines
8.0 KiB
Python
286 lines
8.0 KiB
Python
import csv
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import json
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import base64
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import pandas as pd
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from pyhanko.sign import signers
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from django import forms
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from django.utils.translation import gettext_lazy as _
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from django.core.exceptions import ValidationError
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from utils import credtools, certs
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from idhub.models import (
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DID,
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File_datas,
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Membership,
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Schemas,
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Service,
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UserRol,
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VerificableCredential,
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)
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from idhub_auth.models import User
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class ImportForm(forms.Form):
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did = forms.ChoiceField(label=_("Did"), choices=[])
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schema = forms.ChoiceField(label=_("Schema"), choices=[])
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file_import = forms.FileField(label=_("File import"))
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def __init__(self, *args, **kwargs):
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self._schema = None
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self._did = None
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self.rows = {}
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self.properties = {}
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self.user = kwargs.pop('user', None)
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super().__init__(*args, **kwargs)
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self.fields['did'].choices = [
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(x.did, x.label) for x in DID.objects.filter(user=self.user)
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]
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self.fields['schema'].choices = [
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(x.id, x.name()) for x in Schemas.objects.filter()
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]
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def clean_did(self):
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data = self.cleaned_data["did"]
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did = DID.objects.filter(
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user=self.user,
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did=data
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)
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if not did.exists():
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raise ValidationError("Did is not valid!")
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self._did = did.first()
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return data
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def clean_schema(self):
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data = self.cleaned_data["schema"]
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schema = Schemas.objects.filter(
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id=data
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)
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if not schema.exists():
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raise ValidationError("Schema is not valid!")
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self._schema = schema.first()
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try:
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self.json_schema = json.loads(self._schema.data)
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prop = self.json_schema['properties']
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self.properties = prop['credentialSubject']['properties']
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except Exception:
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raise ValidationError("Schema is not valid!")
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if not self.properties:
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raise ValidationError("Schema is not valid!")
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return data
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def clean_file_import(self):
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data = self.cleaned_data["file_import"]
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self.file_name = data.name
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if File_datas.objects.filter(file_name=self.file_name, success=True).exists():
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raise ValidationError("This file already exists!")
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# df = pd.read_csv (data, delimiter="\t", quotechar='"', quoting=csv.QUOTE_ALL)
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df = pd.read_excel(data)
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data_pd = df.fillna('').to_dict()
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if not data_pd:
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self.exception("This file is empty!")
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head_row = {x: '' for x in self.properties.keys()}
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for n in range(df.last_valid_index()+1):
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row = head_row.copy()
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for k in data_pd.keys():
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row[k] = data_pd[k][n] or ''
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user = self.validate_jsonld(n, row)
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self.rows[user] = row
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return data
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def save(self, commit=True):
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table = []
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for k, v in self.rows.items():
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table.append(self.create_credential(k, v))
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if commit:
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for cred in table:
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cred.save()
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File_datas.objects.create(file_name=self.file_name)
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return table
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return
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def validate_jsonld(self, line, row):
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try:
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credtools.validate_json(row, self.json_schema)
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except Exception as e:
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msg = "line {}: {}".format(line+1, e)
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self.exception(msg)
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user = User.objects.filter(email=row.get('email'))
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if not user:
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txt = _('The user does not exist!')
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msg = "line {}: {}".format(line+1, txt)
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self.exception(msg)
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return user.first()
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def create_credential(self, user, row):
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return VerificableCredential(
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verified=False,
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user=user,
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csv_data=json.dumps(row),
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issuer_did=self._did,
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schema=self._schema,
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)
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def exception(self, msg):
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File_datas.objects.create(file_name=self.file_name, success=False)
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raise ValidationError(msg)
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class SchemaForm(forms.Form):
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file_template = forms.FileField(label=_("File template"))
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class MembershipForm(forms.ModelForm):
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class Meta:
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model = Membership
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fields = ['type', 'start_date', 'end_date']
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def clean_end_date(self):
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data = super().clean()
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start_date = data['start_date']
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end_date = data.get('end_date')
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members = Membership.objects.filter(
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type=data['type'],
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user=self.instance.user
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)
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if self.instance.id:
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members = members.exclude(id=self.instance.id)
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if members.filter(start_date__lte=start_date, end_date=None).exists():
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msg = _("This membership already exists!")
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raise forms.ValidationError(msg)
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if (start_date and end_date):
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if start_date > end_date:
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msg = _("The end date is less than the start date")
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raise forms.ValidationError(msg)
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members = members.filter(
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start_date__lte=end_date,
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end_date__gte=start_date,
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)
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if members.exists():
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msg = _("This membership already exists!")
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raise forms.ValidationError(msg)
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if not end_date:
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members = members.filter(
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start_date__gte=start_date,
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)
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if members.exists():
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msg = _("This membership already exists!")
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raise forms.ValidationError(msg)
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return end_date
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class UserRolForm(forms.ModelForm):
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class Meta:
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model = UserRol
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fields = ['service']
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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if not self.instance.id:
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user = self.instance.user
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choices = self.fields['service'].choices
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choices.queryset = choices.queryset.exclude(users__user=user)
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self.fields['service'].choices = choices
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def clean_service(self):
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data = super().clean()
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service = UserRol.objects.filter(
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service=data['service'],
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user=self.instance.user
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)
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if service.exists():
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msg = _("Is not possible to have a duplicate role")
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raise forms.ValidationError(msg)
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return data['service']
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class ImportCertificateForm(forms.Form):
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label = forms.CharField(label=_("Label"))
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password = forms.CharField(
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label=_("Password of certificate"),
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widget=forms.PasswordInput
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)
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file_import = forms.FileField(label=_("File import"))
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def __init__(self, *args, **kwargs):
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self._did = None
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self._s = None
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self._label = None
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self.user = kwargs.pop('user', None)
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super().__init__(*args, **kwargs)
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def clean(self):
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data = super().clean()
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file_import = data.get('file_import')
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self.pfx_file = file_import.read()
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self.file_name = file_import.name
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self._pss = data.get('password')
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self._label = data.get('label')
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if not self.pfx_file or not self._pss:
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msg = _("Is not a valid certificate")
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raise forms.ValidationError(msg)
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self.signer_init()
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if not self._s:
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msg = _("Is not a valid certificate")
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raise forms.ValidationError(msg)
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self.new_did()
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return data
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def new_did(self):
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cert = self.pfx_file
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keys = {
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"cert": base64.b64encode(self.pfx_file).decode('utf-8'),
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"passphrase": self._pss
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}
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key_material = json.dumps(keys)
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self._did = DID(
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key_material=key_material,
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did=self.file_name,
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label=self._label,
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eidas1=True,
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user=self.user
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)
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def save(self, commit=True):
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if commit:
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self._did.save()
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return self._did
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return
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def signer_init(self):
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self._s = certs.load_cert(
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self.pfx_file, self._pss.encode('utf-8')
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)
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