{Ninja-Shell}

Filename: //lib/python3/dist-packages//////acme////mixins.py

"""Useful mixins for Challenge and Resource objects"""

class VersionedLEACMEMixin(object):
    """This mixin stores the version of Let's Encrypt's endpoint being used."""
    @property
    def le_acme_version(self):
        """Define the version of ACME protocol to use"""
        return getattr(self, '_le_acme_version', 1)

@le_acme_version.setter
    def le_acme_version(self, version):
        # We need to use object.__setattr__ to not depend on the specific implementation of
        # __setattr__  in current class (eg. jose.TypedJSONObjectWithFields raises AttributeError
        # for any attempt to set an attribute to make objects immutable).
        object.__setattr__(self, '_le_acme_version', version)

def __setattr__(self, key, value):
        if key == 'le_acme_version':
            # Required for @property to operate properly. See comment above.
            object.__setattr__(self, key, value)
        else:
            super(VersionedLEACMEMixin, self).__setattr__(key, value)  # pragma: no cover

class ResourceMixin(VersionedLEACMEMixin):
    """
    This mixin generates a RFC8555 compliant JWS payload
    by removing the `resource` field if needed (eg. ACME v2 protocol).
    """
    def to_partial_json(self):
        """See josepy.JSONDeserializable.to_partial_json()"""
        return _safe_jobj_compliance(super(ResourceMixin, self),
                                     'to_partial_json', 'resource')

def fields_to_partial_json(self):
        """See josepy.JSONObjectWithFields.fields_to_partial_json()"""
        return _safe_jobj_compliance(super(ResourceMixin, self),
                                     'fields_to_partial_json', 'resource')

class TypeMixin(VersionedLEACMEMixin):
    """
    This mixin allows generation of a RFC8555 compliant JWS payload
    by removing the `type` field if needed (eg. ACME v2 protocol).
    """
    def to_partial_json(self):
        """See josepy.JSONDeserializable.to_partial_json()"""
        return _safe_jobj_compliance(super(TypeMixin, self),
                                     'to_partial_json', 'type')

def fields_to_partial_json(self):
        """See josepy.JSONObjectWithFields.fields_to_partial_json()"""
        return _safe_jobj_compliance(super(TypeMixin, self),
                                     'fields_to_partial_json', 'type')

def _safe_jobj_compliance(instance, jobj_method, uncompliant_field):
    if hasattr(instance, jobj_method):
        jobj = getattr(instance, jobj_method)()
        if instance.le_acme_version == 2:
            jobj.pop(uncompliant_field, None)
        return jobj

raise AttributeError('Method {0}() is not implemented.'.format(jobj_method))  # pragma: no cover

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