rfc1902.py
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#
# This file is part of pyasn1-modules software.
#
# Copyright (c) 2005-2019, Ilya Etingof <etingof@gmail.com>
# License: http://snmplabs.com/pyasn1/license.html
#
# SNMPv2c message syntax
#
# ASN.1 source from:
# http://www.ietf.org/rfc/rfc1902.txt
#
from pyasn1.type import constraint
from pyasn1.type import namedtype
from pyasn1.type import tag
from pyasn1.type import univ
class Integer(univ.Integer):
subtypeSpec = univ.Integer.subtypeSpec + constraint.ValueRangeConstraint(
-2147483648, 2147483647
)
class Integer32(univ.Integer):
subtypeSpec = univ.Integer.subtypeSpec + constraint.ValueRangeConstraint(
-2147483648, 2147483647
)
class OctetString(univ.OctetString):
subtypeSpec = univ.Integer.subtypeSpec + constraint.ValueSizeConstraint(
0, 65535
)
class IpAddress(univ.OctetString):
tagSet = univ.OctetString.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x00)
)
subtypeSpec = univ.OctetString.subtypeSpec + constraint.ValueSizeConstraint(
4, 4
)
class Counter32(univ.Integer):
tagSet = univ.Integer.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x01)
)
subtypeSpec = univ.Integer.subtypeSpec + constraint.ValueRangeConstraint(
0, 4294967295
)
class Gauge32(univ.Integer):
tagSet = univ.Integer.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x02)
)
subtypeSpec = univ.Integer.subtypeSpec + constraint.ValueRangeConstraint(
0, 4294967295
)
class Unsigned32(univ.Integer):
tagSet = univ.Integer.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x02)
)
subtypeSpec = univ.Integer.subtypeSpec + constraint.ValueRangeConstraint(
0, 4294967295
)
class TimeTicks(univ.Integer):
tagSet = univ.Integer.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x03)
)
subtypeSpec = univ.Integer.subtypeSpec + constraint.ValueRangeConstraint(
0, 4294967295
)
class Opaque(univ.OctetString):
tagSet = univ.OctetString.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x04)
)
class Counter64(univ.Integer):
tagSet = univ.Integer.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x06)
)
subtypeSpec = univ.Integer.subtypeSpec + constraint.ValueRangeConstraint(
0, 18446744073709551615
)
class Bits(univ.OctetString):
pass
class ObjectName(univ.ObjectIdentifier):
pass
class SimpleSyntax(univ.Choice):
componentType = namedtype.NamedTypes(
namedtype.NamedType('integer-value', Integer()),
namedtype.NamedType('string-value', OctetString()),
namedtype.NamedType('objectID-value', univ.ObjectIdentifier())
)
class ApplicationSyntax(univ.Choice):
componentType = namedtype.NamedTypes(
namedtype.NamedType('ipAddress-value', IpAddress()),
namedtype.NamedType('counter-value', Counter32()),
namedtype.NamedType('timeticks-value', TimeTicks()),
namedtype.NamedType('arbitrary-value', Opaque()),
namedtype.NamedType('big-counter-value', Counter64()),
# This conflicts with Counter32
# namedtype.NamedType('unsigned-integer-value', Unsigned32()),
namedtype.NamedType('gauge32-value', Gauge32())
) # BITS misplaced?
class ObjectSyntax(univ.Choice):
componentType = namedtype.NamedTypes(
namedtype.NamedType('simple', SimpleSyntax()),
namedtype.NamedType('application-wide', ApplicationSyntax())
)