# coding: utf-8
#
# This file is part of pyasn1-modules software.
#
# Created by Joel Johnson with asn1ate tool.
# Copyright (c) 2005-2019, Ilya Etingof <etingof@gmail.com>
# License: http://snmplabs.com/pyasn1/license.html
#
# PKCS #10: Certification Request Syntax Specification
#
# ASN.1 source from:
# http://www.ietf.org/rfc/rfc2986.txt
#
from pyasn1.type import constraint
from pyasn1.type import namedtype
from pyasn1.type import opentype
from pyasn1.type import tag
from pyasn1.type import univ

MAX = float('inf')


class AttributeType(univ.ObjectIdentifier):
    pass


class AttributeValue(univ.Any):
    pass


certificateAttributesMap = {}


class AttributeTypeAndValue(univ.Sequence):
    componentType = namedtype.NamedTypes(
        namedtype.NamedType('type', AttributeType()),
        namedtype.NamedType(
            'value', AttributeValue(),
            openType=opentype.OpenType('type', certificateAttributesMap)
        )
    )


class Attribute(univ.Sequence):
    componentType = namedtype.NamedTypes(
        namedtype.NamedType('type', AttributeType()),
        namedtype.NamedType('values',
                            univ.SetOf(componentType=AttributeValue()),
                            openType=opentype.OpenType('type', certificateAttributesMap))
    )


class Attributes(univ.SetOf):
    pass


Attributes.componentType = Attribute()


class RelativeDistinguishedName(univ.SetOf):
    pass


RelativeDistinguishedName.componentType = AttributeTypeAndValue()
RelativeDistinguishedName.subtypeSpec = constraint.ValueSizeConstraint(1, MAX)


class RDNSequence(univ.SequenceOf):
    pass


RDNSequence.componentType = RelativeDistinguishedName()


class Name(univ.Choice):
    pass


Name.componentType = namedtype.NamedTypes(
    namedtype.NamedType('rdnSequence', RDNSequence())
)


class AlgorithmIdentifier(univ.Sequence):
    componentType = namedtype.NamedTypes(
        namedtype.NamedType('algorithm', univ.ObjectIdentifier()),
        namedtype.OptionalNamedType('parameters', univ.Any())
    )


class SubjectPublicKeyInfo(univ.Sequence):
    pass


SubjectPublicKeyInfo.componentType = namedtype.NamedTypes(
    namedtype.NamedType('algorithm', AlgorithmIdentifier()),
    namedtype.NamedType('subjectPublicKey', univ.BitString())
)


class CertificationRequestInfo(univ.Sequence):
    pass


CertificationRequestInfo.componentType = namedtype.NamedTypes(
    namedtype.NamedType('version', univ.Integer()),
    namedtype.NamedType('subject', Name()),
    namedtype.NamedType('subjectPKInfo', SubjectPublicKeyInfo()),
    namedtype.NamedType('attributes',
                        Attributes().subtype(implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0)))
)


class CertificationRequest(univ.Sequence):
    pass


CertificationRequest.componentType = namedtype.NamedTypes(
    namedtype.NamedType('certificationRequestInfo', CertificationRequestInfo()),
    namedtype.NamedType('signatureAlgorithm', AlgorithmIdentifier()),
    namedtype.NamedType('signature', univ.BitString())
)