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"""
Implementation of SMI and SNMP for v.2c (RFC1902 & RFC1905)
Copyright 1999-2002 by Ilya Etingof <ilya@glas.net>. See LICENSE for
details.
"""
# Module public names
__all__ = [ 'GetRequest', 'GetNextRequest', 'SetRequest', 'Response', \
'GetBulkRequest', 'InformRequest', 'Report', 'SnmpV2Trap',
'Request' ]
from pysnmp.proto.rfc1902 import *
from pysnmp.proto import rfc1905, error
from pysnmp.asn1 import constraints
# These do not require any additional subtyping
from rfc1905 import BindValue, VarBind, VarBindList, NoSuchObject, \
NoSuchInstance, EndOfMibView
class _RequestPduSpecifics:
"""Request PDU specific
"""
class ErrorStatus(rfc1905.ErrorStatus):
"""Request-specific PDU error status
"""
constraints = (
constraints.ValueRangeConstraint(0, 0),
)
class ErrorIndex(rfc1905.ErrorIndex):
"""Request-specific PDU error index
"""
constraints = (
constraints.ValueRangeConstraint(0, 0),
)
def reply(self, **kwargs):
"""Build and return a response PDU from this request PDU
"""
rsp = apply(Response.Pdus.ResponsePdu, [], kwargs)
rsp['request_id'] = self['request_id']
rsp['variable_bindings'] = self['variable_bindings']
return rsp
def match(self, rspPdu):
"""Return true if response PDU matches request PDU
"""
if not isinstance(rspPdu, rfc1905.ResponsePdu):
raise error.BadArgumentError('Incompatible types for comparation %s with %s' % (self.__class__.__name__, str(rspPdu)))
if self['request_id'] == rspPdu['request_id']:
return 1
class _RequestSpecifics:
"""Request-specific methods
"""
def reply(self, **kwargs):
"""Create v.2c RESPONSE message from this request message
"""
rsp = apply(Response, [], kwargs)
rsp['community'] = self['community']
pdu = self['pdu'].values()[0]
if hasattr(pdu, 'reply'):
rsp['pdu']['response'] = pdu.reply()
return rsp
def match(self, rsp):
"""Return true if response message matches this request message
"""
if not isinstance(rsp, Response):
raise error.BadArgumentError('Incompatible types for comparation %s with %s' % (self.__class__.__name__, str(rsp)))
# Make sure response matches request
if self['community'] != rsp['community']:
return
return self['pdu'].values()[0].match(rsp['pdu'].values()[0])
# Get-Request
class GetRequest(rfc1905.Message, _RequestSpecifics):
"""Strictly typed v.2c GETREQUEST
"""
class Pdus(rfc1905.Pdus):
"""GETREQUEST specific selection of applicible PDUs
"""
class GetRequestPdu(rfc1905.GetRequestPdu, _RequestPduSpecifics):
"""Strictly typed v.2c GETREQUEST PDU class
"""
fixedComponents = [ rfc1905.RequestId,\
_RequestPduSpecifics.ErrorStatus, \
_RequestPduSpecifics.ErrorIndex, \
VarBindList ]
choiceNames = [ 'get_request' ]
choiceComponents = [ GetRequestPdu ]
initialComponent = choiceComponents[0]
fixedComponents = [ rfc1905.Version, rfc1905.Community, Pdus ]
# GetNext request
class GetNextRequest(rfc1905.Message, _RequestSpecifics):
"""Strictly typed v.2c GETNEXTREQUEST
"""
class Pdus(rfc1905.Pdus):
"""GETNEXTREQUEST specific selection of applicible PDUs
"""
class GetNextRequestPdu(rfc1905.GetNextRequestPdu, \
_RequestPduSpecifics):
"""Strictly typed v.2c GETNEXTREQUEST PDU class
"""
fixedComponents = [ rfc1905.RequestId,\
_RequestPduSpecifics.ErrorStatus, \
_RequestPduSpecifics.ErrorIndex, \
VarBindList ]
choiceNames = [ 'get_next_request' ]
choiceComponents = [ GetNextRequestPdu ]
initialComponent = choiceComponents[0]
fixedComponents = [ rfc1905.Version, rfc1905.Community, Pdus ]
# Set request
class SetRequest(rfc1905.Message, _RequestSpecifics):
"""Strictly typed v.2c SETREQUEST
"""
class Community(rfc1905.Community):
"""SETREQUEST specific community name
"""
initialValue = 'private'
class Pdus(rfc1905.Pdus):
"""SETREQUEST specific selection of applicible PDUs
"""
class SetRequestPdu(rfc1905.SetRequestPdu, _RequestPduSpecifics):
"""Strictly typed v.2c SETREQUEST PDU class
"""
fixedComponents = [ rfc1905.RequestId,\
_RequestPduSpecifics.ErrorStatus, \
_RequestPduSpecifics.ErrorIndex, \
VarBindList ]
choiceNames = [ 'set_request' ]
choiceComponents = [ SetRequestPdu ]
initialComponent = choiceComponents[0]
fixedComponents = [ rfc1905.Version, Community, Pdus ]
# Inform request
class InformRequest(rfc1905.Message, _RequestSpecifics):
"""Strictly typed v.2c INFORMREQUEST
"""
class Pdus(rfc1905.Pdus):
"""INFORMREQUEST specific selection of applicible PDUs
"""
class InformRequestPdu(rfc1905.InformRequestPdu, _RequestPduSpecifics):
"""Strictly typed v.2c INFORMREQUEST PDU class
"""
fixedComponents = [ rfc1905.RequestId,\
_RequestPduSpecifics.ErrorStatus, \
_RequestPduSpecifics.ErrorIndex, \
VarBindList ]
choiceNames = [ 'inform_request' ]
choiceComponents = [ InformRequestPdu ]
initialComponent = choiceComponents[0]
fixedComponents = [ rfc1905.Version, rfc1905.Community, Pdus ]
# SNMPv2-trap
class SnmpV2Trap(rfc1905.Message):
"""Strictly typed v.2c SNMPV2TRAP message
"""
class Pdus(rfc1905.Pdus):
"""SNMPV2TRAP specific selection of applicible PDUs
"""
class SnmpV2TrapPdu(rfc1905.SnmpV2TrapPdu):
"""Strictly typed v.2c SNMPV2TRAP PDU class
"""
fixedComponents = [ rfc1905.RequestId,\
rfc1905.ErrorStatus, \
rfc1905.ErrorIndex, \
VarBindList ]
choiceNames = [ 'snmpV2_trap' ]
choiceComponents = [ SnmpV2TrapPdu ]
initialComponent = choiceComponents[0]
fixedComponents = [ rfc1905.Version, rfc1905.Community, Pdus ]
# An alias to make it looking similar to v.1
Trap = SnmpV2Trap
# Report message
class Report(rfc1905.Message):
"""Strictly typed v.2c REPORT message
"""
class Pdus(rfc1905.Pdus):
"""REPORT specific selection of applicible PDUs
"""
class ReportPdu(rfc1905.ReportPdu, _RequestPduSpecifics):
"""Strictly typed v.2c REPORT PDU class
"""
fixedComponents = [ rfc1905.RequestId,\
rfc1905.ErrorStatus, \
rfc1905.ErrorIndex, \
VarBindList ]
choiceNames = [ 'report' ]
choiceComponents = [ ReportPdu ]
initialComponent = choiceComponents[0]
fixedComponents = [ rfc1905.Version, rfc1905.Community, Pdus ]
# GetBulk request
class GetBulkRequest(rfc1905.Message, _RequestSpecifics):
"""Strictly typed v.2c GetBulkRequest
"""
class Pdus(rfc1905.Pdus):
"""GetBulkRequest specific selection of applicible PDUs
"""
class GetBulkRequestPdu(rfc1905.GetBulkRequestPdu,\
_RequestPduSpecifics):
"""Strictly typed v.2c GetBulkRequest PDU class
"""
fixedComponents = [ rfc1905.RequestId, rfc1905.NonRepeaters, \
rfc1905.MaxRepetitions, VarBindList ]
def reply(self, **kwargs):
"""Build a response message from GetBulk request (w/o bindings)
"""
rsp = apply(Response.Pdus.ResponsePdu, [], kwargs)
rsp['request_id'] = self['request_id']
return rsp
choiceNames = [ 'get_bulk_request' ]
choiceComponents = [ GetBulkRequestPdu ]
initialComponent = choiceComponents[0]
fixedComponents = [ rfc1905.Version, rfc1905.Community, Pdus ]
# Response
class Response(rfc1905.Message):
"""Strictly typed v.2c GETREQUEST
"""
class Pdus(rfc1905.Pdus):
"""Response specific selection of applicible PDUs
"""
class ResponsePdu(rfc1905.ResponsePdu):
"""Strictly typed v.2c Response PDU class
"""
fixedComponents = [ rfc1905.RequestId,\
rfc1905.ErrorStatus, \
rfc1905.ErrorIndex, \
VarBindList ]
choiceNames = [ 'response' ]
choiceComponents = [ ResponsePdu ]
initialComponent = choiceComponents[0]
fixedComponents = [ rfc1905.Version, rfc1905.Community, Pdus ]
# An alias to make it looking similar to v.1
GetResponse = Response
# Requests demux
class Request(rfc1905.Message, _RequestSpecifics):
"""Strictly typed any v.2c request
"""
class Pdus(rfc1905.Pdus):
"""Request specific selection of applicible PDUs
"""
choiceNames = [ 'get_request', 'get_next_request', \
'get_bulk_request', 'set_request', 'inform_request' ]
choiceComponents = [ GetRequest.Pdus.GetRequestPdu, \
GetNextRequest.Pdus.GetNextRequestPdu, \
GetBulkRequest.Pdus.GetBulkRequestPdu, \
SetRequest.Pdus.SetRequestPdu, \
InformRequest.Pdus.InformRequestPdu ]
fixedComponents = [ rfc1905.Version, rfc1905.Community, Pdus ]
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