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#
# This file is part of pyasn1-modules software.
#
# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com>
# License: https://www.pysnmp.com/pyasn1/license.html
#
# SNMPv3 message syntax
#
# ASN.1 source from:
# http://www.ietf.org/rfc/rfc3412.txt
#
from pyasn1.type import constraint, namedtype, univ
from pyasn1_modules import rfc1905
class ScopedPDU(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType("contextEngineId", univ.OctetString()),
namedtype.NamedType("contextName", univ.OctetString()),
namedtype.NamedType("data", rfc1905.PDUs()),
)
class ScopedPduData(univ.Choice):
componentType = namedtype.NamedTypes(
namedtype.NamedType("plaintext", ScopedPDU()),
namedtype.NamedType("encryptedPDU", univ.OctetString()),
)
class HeaderData(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType(
"msgID",
univ.Integer().subtype(
subtypeSpec=constraint.ValueRangeConstraint(0, 2147483647)
),
),
namedtype.NamedType(
"msgMaxSize",
univ.Integer().subtype(
subtypeSpec=constraint.ValueRangeConstraint(484, 2147483647)
),
),
namedtype.NamedType(
"msgFlags",
univ.OctetString().subtype(
subtypeSpec=constraint.ValueSizeConstraint(1, 1)
),
),
namedtype.NamedType(
"msgSecurityModel",
univ.Integer().subtype(
subtypeSpec=constraint.ValueRangeConstraint(1, 2147483647)
),
),
)
class SNMPv3Message(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType(
"msgVersion",
univ.Integer().subtype(
subtypeSpec=constraint.ValueRangeConstraint(0, 2147483647)
),
),
namedtype.NamedType("msgGlobalData", HeaderData()),
namedtype.NamedType("msgSecurityParameters", univ.OctetString()),
namedtype.NamedType("msgData", ScopedPduData()),
)
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