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#
# This file is part of pyasn1-modules software.
#
# Copyright (c) 2005-2017, Ilya Etingof <etingof@gmail.com>
# License: http://pyasn1.sf.net/license.html
#
# SNMPv1 message syntax
#
# ASN.1 source from:
# http://www.ietf.org/rfc/rfc1157.txt
#
# Sample captures from:
# http://wiki.wireshark.org/SampleCaptures/
#
from pyasn1.type import namedtype
from pyasn1.type import namedval
from pyasn1.type import tag
from pyasn1.type import univ
from pyasn1_modules import rfc1155
class Version(univ.Integer):
namedValues = namedval.NamedValues(
('version-1', 0)
)
defaultValue = 0
class Community(univ.OctetString):
pass
class RequestID(univ.Integer):
pass
class ErrorStatus(univ.Integer):
namedValues = namedval.NamedValues(
('noError', 0),
('tooBig', 1),
('noSuchName', 2),
('badValue', 3),
('readOnly', 4),
('genErr', 5)
)
class ErrorIndex(univ.Integer):
pass
class VarBind(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('name', rfc1155.ObjectName()),
namedtype.NamedType('value', rfc1155.ObjectSyntax())
)
class VarBindList(univ.SequenceOf):
componentType = VarBind()
class _RequestBase(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('request-id', RequestID()),
namedtype.NamedType('error-status', ErrorStatus()),
namedtype.NamedType('error-index', ErrorIndex()),
namedtype.NamedType('variable-bindings', VarBindList())
)
class GetRequestPDU(_RequestBase):
tagSet = _RequestBase.tagSet.tagImplicitly(
tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 0)
)
class GetNextRequestPDU(_RequestBase):
tagSet = _RequestBase.tagSet.tagImplicitly(
tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 1)
)
class GetResponsePDU(_RequestBase):
tagSet = _RequestBase.tagSet.tagImplicitly(
tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 2)
)
class SetRequestPDU(_RequestBase):
tagSet = _RequestBase.tagSet.tagImplicitly(
tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 3)
)
class TrapPDU(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('enterprise', univ.ObjectIdentifier()),
namedtype.NamedType('agent-addr', rfc1155.NetworkAddress()),
namedtype.NamedType('generic-trap', univ.Integer().clone(
namedValues=namedval.NamedValues(('coldStart', 0), ('warmStart', 1), ('linkDown', 2), ('linkUp', 3),
('authenticationFailure', 4), ('egpNeighborLoss', 5),
('enterpriseSpecific', 6)))),
namedtype.NamedType('specific-trap', univ.Integer()),
namedtype.NamedType('time-stamp', rfc1155.TimeTicks()),
namedtype.NamedType('variable-bindings', VarBindList())
)
class Pdus(univ.Choice):
componentType = namedtype.NamedTypes(
namedtype.NamedType('get-request', GetRequestPDU()),
namedtype.NamedType('get-next-request', GetNextRequestPDU()),
namedtype.NamedType('get-response', GetResponsePDU()),
namedtype.NamedType('set-request', SetRequestPDU()),
namedtype.NamedType('trap', TrapPDU())
)
class Message(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('version', Version()),
namedtype.NamedType('community', Community()),
namedtype.NamedType('data', Pdus())
)
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