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127 lines
3.5 KiB
127 lines
3.5 KiB
2 years ago
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#
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# This file is part of pyasn1-modules software.
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#
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# Copyright (c) 2005-2019, Ilya Etingof <etingof@gmail.com>
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# License: http://snmplabs.com/pyasn1/license.html
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#
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# SNMPv1 message syntax
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#
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# ASN.1 source from:
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# http://www.ietf.org/rfc/rfc1157.txt
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#
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# Sample captures from:
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# http://wiki.wireshark.org/SampleCaptures/
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#
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from pyasn1.type import namedtype
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from pyasn1.type import namedval
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from pyasn1.type import tag
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from pyasn1.type import univ
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from pyasn1_modules import rfc1155
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class Version(univ.Integer):
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namedValues = namedval.NamedValues(
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('version-1', 0)
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)
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defaultValue = 0
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class Community(univ.OctetString):
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pass
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class RequestID(univ.Integer):
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pass
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class ErrorStatus(univ.Integer):
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namedValues = namedval.NamedValues(
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('noError', 0),
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('tooBig', 1),
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('noSuchName', 2),
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('badValue', 3),
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('readOnly', 4),
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('genErr', 5)
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)
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class ErrorIndex(univ.Integer):
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pass
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class VarBind(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('name', rfc1155.ObjectName()),
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namedtype.NamedType('value', rfc1155.ObjectSyntax())
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)
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class VarBindList(univ.SequenceOf):
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componentType = VarBind()
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class _RequestBase(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('request-id', RequestID()),
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namedtype.NamedType('error-status', ErrorStatus()),
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namedtype.NamedType('error-index', ErrorIndex()),
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namedtype.NamedType('variable-bindings', VarBindList())
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)
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class GetRequestPDU(_RequestBase):
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tagSet = _RequestBase.tagSet.tagImplicitly(
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tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 0)
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)
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class GetNextRequestPDU(_RequestBase):
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tagSet = _RequestBase.tagSet.tagImplicitly(
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tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 1)
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)
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class GetResponsePDU(_RequestBase):
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tagSet = _RequestBase.tagSet.tagImplicitly(
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tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 2)
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)
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class SetRequestPDU(_RequestBase):
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tagSet = _RequestBase.tagSet.tagImplicitly(
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tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 3)
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)
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class TrapPDU(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('enterprise', univ.ObjectIdentifier()),
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namedtype.NamedType('agent-addr', rfc1155.NetworkAddress()),
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namedtype.NamedType('generic-trap', univ.Integer().clone(
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namedValues=namedval.NamedValues(('coldStart', 0), ('warmStart', 1), ('linkDown', 2), ('linkUp', 3),
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('authenticationFailure', 4), ('egpNeighborLoss', 5),
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('enterpriseSpecific', 6)))),
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namedtype.NamedType('specific-trap', univ.Integer()),
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namedtype.NamedType('time-stamp', rfc1155.TimeTicks()),
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namedtype.NamedType('variable-bindings', VarBindList())
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)
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class Pdus(univ.Choice):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('get-request', GetRequestPDU()),
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namedtype.NamedType('get-next-request', GetNextRequestPDU()),
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namedtype.NamedType('get-response', GetResponsePDU()),
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namedtype.NamedType('set-request', SetRequestPDU()),
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namedtype.NamedType('trap', TrapPDU())
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)
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class Message(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('version', Version()),
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namedtype.NamedType('community', Community()),
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namedtype.NamedType('data', Pdus())
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)
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