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serializers.py
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serializers.py
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"""Serializers for Certificate API"""
import django_countries
from dj_rest_auth.serializers import UserDetailsSerializer
from django.contrib.auth import password_validation
from django_countries.serializers import CountryFieldMixin
from rest_framework import serializers
from certificate_engine.types import CertificateTypes
from x509_pki.models import Certificate, DistinguishedName, KeyStore
countries = django_countries.Countries()
class DistinguishedNameSerializer(CountryFieldMixin, serializers.ModelSerializer):
class Meta:
fields = (
"commonName",
"countryName",
"stateOrProvinceName",
"localityName",
"organizationName",
"organizationalUnitName",
"emailAddress",
"subjectAltNames",
)
model = DistinguishedName
class KeystoreSerializer(serializers.ModelSerializer):
class Meta:
fields = ("fingerprint",)
read_only_fields = ("fingerprint",)
model = KeyStore
class CertificateSerializer(serializers.ModelSerializer):
dn = DistinguishedNameSerializer()
keystore = KeystoreSerializer(read_only=True)
passphrase_issuer = serializers.CharField(max_length=200, required=False, allow_null=True, allow_blank=True)
passphrase_out = serializers.CharField(max_length=200, required=False, allow_null=True, allow_blank=True)
passphrase_out_confirmation = serializers.CharField(
max_length=200, required=False, allow_null=True, allow_blank=True
)
owner = serializers.HiddenField(default=serializers.CurrentUserDefault())
class Meta:
fields = (
"id",
"name",
"owner",
"parent",
"type",
"dn",
"keystore",
"serial",
"created_at",
"expires_at",
"revoked_at",
"days_valid",
"expired",
"revoked",
"crl_distribution_url",
"ocsp_distribution_host",
"passphrase_issuer",
"passphrase_out",
"passphrase_out_confirmation",
)
model = Certificate
extra_kwargs = {
"passphrase_out": {"write_only": True},
"passphrase_out_confirmation": {"write_only": True},
"passphrase_issuer": {"write_only": True},
}
def validate_passphrase_out(self, passphrase_out):
if passphrase_out:
password_validation.validate_password(passphrase_out, self.instance)
return passphrase_out
return None
def validate_passphrase_issuer(self, passphrase_issuer):
if self.initial_data.get("parent"):
parent = Certificate.objects.get(pk=self.initial_data.get("parent"))
try:
if not parent.is_passphrase_valid(passphrase_issuer):
raise serializers.ValidationError("Passphrase incorrect. Not allowed to revoke your certificate")
except KeyStore.DoesNotExist:
raise serializers.ValidationError("Certificate has no cert, something went wrong during generation")
else:
if passphrase_issuer:
raise serializers.ValidationError(
"You should provide a parent certificate if you provide an issuer passphrase"
)
return passphrase_issuer
def validate_passphrase_out_confirmation(self, passphrase_out_confirmation):
if passphrase_out_confirmation:
passphrase_out = self.initial_data.get("passphrase_out")
if passphrase_out and passphrase_out_confirmation and passphrase_out != passphrase_out_confirmation:
raise serializers.ValidationError("The two passphrase fields didn't match.")
password_validation.validate_password(passphrase_out_confirmation, self.instance)
return passphrase_out_confirmation
return None
def validate(self, data):
name = data.get("name")
if not name:
name = str(data.get("dn").get("commonName"))
cert_type = data.get("type")
owner = data.get("owner")
if Certificate.objects.filter(name=name, owner=owner, type=cert_type).count() > 0:
raise serializers.ValidationError(f"{dict(Certificate.TYPES)[cert_type]} " f'"{name}" already exists.')
if "passphrase_issuer" not in data:
self.validate_passphrase_issuer(None)
return data
def create(self, validated_data):
dn_data = validated_data.pop("dn")
dn = DistinguishedName.objects.create(**dn_data)
certificate = Certificate.objects.create(dn=dn, **validated_data)
certificate.passphrase_issuer = None
certificate.passphrase_out = None
certificate.passphrase_out_confirmation = None
return certificate
class CertificateRevokeSerializer(serializers.ModelSerializer):
passphrase_issuer = serializers.CharField(max_length=200, required=True)
class Meta:
fields = ("passphrase_issuer",)
model = Certificate
extra_kwargs = {"passphrase_issuer": {"write_only": True}}
def validate_passphrase_issuer(self, passphrase_issuer):
if passphrase_issuer:
if self.instance.type == CertificateTypes.ROOT:
revoke_issuer = self.instance
else:
revoke_issuer = self.instance.parent
try:
if not revoke_issuer.is_passphrase_valid(passphrase_issuer):
raise serializers.ValidationError("Passphrase incorrect. Not allowed to revoke your certificate")
except KeyStore.DoesNotExist:
raise serializers.ValidationError("Certificate has no cert, something went wrong during generation")
return passphrase_issuer
return None
class CertificateRenewSerializer(serializers.ModelSerializer):
passphrase_issuer = serializers.CharField(max_length=200, required=True)
passphrase_out = serializers.CharField(max_length=200, required=False, allow_null=True, allow_blank=True)
passphrase_out_confirmation = serializers.CharField(
max_length=200, required=False, allow_null=True, allow_blank=True
)
class Meta:
fields = (
"passphrase_issuer",
"passphrase_out",
"passphrase_out_confirmation",
"expires_at",
)
model = Certificate
extra_kwargs = {
"passphrase_out": {"write_only": True},
"passphrase_out_confirmation": {"write_only": True},
"passphrase_issuer": {"write_only": True},
}
def validate_passphrase_issuer(self, passphrase_issuer):
if passphrase_issuer:
if self.instance.type == CertificateTypes.ROOT:
revoke_issuer = self.instance
else:
revoke_issuer = self.instance.parent
try:
if not revoke_issuer.is_passphrase_valid(passphrase_issuer):
raise serializers.ValidationError("Passphrase incorrect. Not allowed to revoke your certificate")
except KeyStore.DoesNotExist:
raise serializers.ValidationError("Certificate has no cert, something went wrong during generation")
return passphrase_issuer
return None
def validate_passphrase_out(self, passphrase_out):
if passphrase_out:
password_validation.validate_password(passphrase_out, self.instance)
return passphrase_out
return None
def validate_passphrase_out_confirmation(self, passphrase_out_confirmation):
if passphrase_out_confirmation:
passphrase_out = self.initial_data.get("passphrase_out")
if passphrase_out and passphrase_out_confirmation and passphrase_out != passphrase_out_confirmation:
raise serializers.ValidationError("The two passphrase fields didn't match.")
password_validation.validate_password(passphrase_out_confirmation, self.instance)
return passphrase_out_confirmation
return None
class CertificateCRLSerializer(serializers.ModelSerializer):
passphrase_issuer = serializers.CharField(max_length=200, required=True)
class Meta:
fields = ("passphrase_issuer",)
model = Certificate
extra_kwargs = {"passphrase_issuer": {"write_only": True}}
def validate_passphrase_issuer(self, passphrase_issuer):
if passphrase_issuer:
self.instance.passphrase_issuer = passphrase_issuer
if not self.instance.is_passphrase_valid():
raise serializers.ValidationError("Passphrase issuer incorrect. No permission to create CRL File")
return passphrase_issuer
return None
def update(self, instance, validated_data):
instance.passphrase_issuer = validated_data["passphrase_issuer"]
instance.generate_crl()
return instance
class UserSerializer(UserDetailsSerializer):
class Meta(UserDetailsSerializer.Meta):
fields = ("username", "email", "first_name", "last_name")
read_only_fields = ("username",)