from pyasn1.type import univ,tag,namedtype,namedval
from pysnmp.proto import rfc1155
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', univ.Integer()),
namedtype.NamedType('error-status', univ.Integer(namedValues=namedval.NamedValues(('noError', 0), ('tooBig', 1), ('noSuchName', 2), ('badValue', 3), ('readOnly', 4), ('genErr', 5)))),
namedtype.NamedType('error-index', univ.Integer()),
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):
tagSet = univ.Sequence.tagSet.tagImplicitly(
tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 4)
)
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', univ.Integer(namedValues = namedval.NamedValues(('version-1', 0)))),
namedtype.NamedType('community', univ.OctetString()),
namedtype.NamedType('data', PDUs())
)
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