491 lines
18 KiB
Python
491 lines
18 KiB
Python
#
|
|
# This file is part of pysnmp software.
|
|
#
|
|
# Copyright (c) 2005-2017, Ilya Etingof <etingof@gmail.com>
|
|
# License: http://pysnmp.sf.net/license.html
|
|
#
|
|
from pysnmp.smi.rfc1902 import *
|
|
from pysnmp.hlapi.auth import *
|
|
from pysnmp.hlapi.context import *
|
|
from pysnmp.hlapi.lcd import *
|
|
from pysnmp.hlapi.varbinds import *
|
|
from pysnmp.hlapi.twisted.transport import *
|
|
from pysnmp.entity.rfc3413 import cmdgen
|
|
from twisted.internet.defer import Deferred
|
|
from twisted.python.failure import Failure
|
|
|
|
__all__ = ['getCmd', 'nextCmd', 'setCmd', 'bulkCmd', 'isEndOfMib']
|
|
|
|
vbProcessor = CommandGeneratorVarBinds()
|
|
lcd = CommandGeneratorLcdConfigurator()
|
|
|
|
isEndOfMib = lambda x: not cmdgen.getNextVarBinds(x)[1]
|
|
|
|
def getCmd(snmpEngine, authData, transportTarget, contextData,
|
|
*varBinds, **options):
|
|
"""Performs SNMP GET query.
|
|
|
|
Based on passed parameters, prepares SNMP GET packet
|
|
(:RFC:`1905#section-4.2.1`) and schedules its transmission by
|
|
:mod:`twisted` I/O framework at a later point of time.
|
|
|
|
Parameters
|
|
----------
|
|
snmpEngine : :class:`~pysnmp.hlapi.SnmpEngine`
|
|
Class instance representing SNMP engine.
|
|
|
|
authData : :class:`~pysnmp.hlapi.CommunityData` or :class:`~pysnmp.hlapi.UsmUserData`
|
|
Class instance representing SNMP credentials.
|
|
|
|
transportTarget : :class:`~pysnmp.hlapi.twisted.UdpTransportTarget` or :class:`~pysnmp.hlapi.twisted.Udp6TransportTarget`
|
|
Class instance representing transport type along with SNMP peer address.
|
|
|
|
contextData : :class:`~pysnmp.hlapi.ContextData`
|
|
Class instance representing SNMP ContextEngineId and ContextName values.
|
|
|
|
\*varBinds : :class:`~pysnmp.smi.rfc1902.ObjectType`
|
|
One or more class instances representing MIB variables to place
|
|
into SNMP request.
|
|
|
|
Other Parameters
|
|
----------------
|
|
\*\*options :
|
|
Request options:
|
|
|
|
* `lookupMib` - load MIB and resolve response MIB variables at
|
|
the cost of slightly reduced performance. Default is `True`.
|
|
|
|
Returns
|
|
-------
|
|
deferred : :class:`~twisted.internet.defer.Deferred`
|
|
Twisted Deferred object representing work-in-progress. User
|
|
is expected to attach his own `success` and `error` callback
|
|
functions to the Deferred object though
|
|
:meth:`~twisted.internet.defer.Deferred.addCallbacks` method.
|
|
|
|
Raises
|
|
------
|
|
PySnmpError
|
|
Or its derivative indicating that an error occurred while
|
|
performing SNMP operation.
|
|
|
|
Notes
|
|
-----
|
|
User `success` callback is called with the following tuple as
|
|
its first argument:
|
|
|
|
* errorStatus (str) : True value indicates SNMP PDU error.
|
|
* errorIndex (int) : Non-zero value refers to `varBinds[errorIndex-1]`
|
|
* varBinds (tuple) : A sequence of
|
|
:class:`~pysnmp.smi.rfc1902.ObjectType` class instances representing
|
|
MIB variables returned in SNMP response.
|
|
|
|
User `error` callback is called with `errorIndication` object wrapped
|
|
in :class:`~twisted.python.failure.Failure` object.
|
|
|
|
Examples
|
|
--------
|
|
>>> from twisted.internet.task import react
|
|
>>> from pysnmp.hlapi.twisted import *
|
|
>>>
|
|
>>> def success(args):
|
|
... (errorStatus, errorIndex, varBinds) = args
|
|
... print(errorStatus, errorIndex, varBind)
|
|
...
|
|
>>> def failure(errorIndication):
|
|
... print(errorIndication)
|
|
...
|
|
>>> def run(reactor):
|
|
... d = getCmd(SnmpEngine(),
|
|
... CommunityData('public'),
|
|
... UdpTransportTarget(('demo.snmplabs.com', 161)),
|
|
... ContextData(),
|
|
... ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0)))
|
|
... d.addCallback(success).addErrback(failure)
|
|
... return d
|
|
...
|
|
>>> react(run)
|
|
(0, 0, [ObjectType(ObjectIdentity(ObjectName('1.3.6.1.2.1.1.1.0')), DisplayString('SunOS zeus.snmplabs.com 4.1.3_U1 1 sun4m'))])
|
|
>>>
|
|
|
|
"""
|
|
def __cbFun(snmpEngine, sendRequestHandle,
|
|
errorIndication, errorStatus, errorIndex,
|
|
varBinds, cbCtx):
|
|
lookupMib, deferred = cbCtx
|
|
if errorIndication:
|
|
deferred.errback(Failure(errorIndication))
|
|
else:
|
|
deferred.callback(
|
|
(errorStatus, errorIndex,
|
|
vbProcessor.unmakeVarBinds(snmpEngine, varBinds, lookupMib))
|
|
)
|
|
|
|
addrName, paramsName = lcd.configure(snmpEngine, authData, transportTarget)
|
|
|
|
deferred = Deferred()
|
|
|
|
cmdgen.GetCommandGenerator().sendVarBinds(
|
|
snmpEngine, addrName, contextData.contextEngineId,
|
|
contextData.contextName,
|
|
vbProcessor.makeVarBinds(snmpEngine, varBinds), __cbFun,
|
|
(options.get('lookupMib', True), deferred)
|
|
)
|
|
return deferred
|
|
|
|
def setCmd(snmpEngine, authData, transportTarget, contextData,
|
|
*varBinds, **options):
|
|
"""Performs SNMP SET query.
|
|
|
|
Based on passed parameters, prepares SNMP SET packet
|
|
(:RFC:`1905#section-4.2.5`) and schedules its transmission by
|
|
:mod:`twisted` I/O framework at a later point of time.
|
|
|
|
Parameters
|
|
----------
|
|
snmpEngine : :class:`~pysnmp.hlapi.SnmpEngine`
|
|
Class instance representing SNMP engine.
|
|
|
|
authData : :class:`~pysnmp.hlapi.CommunityData` or :class:`~pysnmp.hlapi.UsmUserData`
|
|
Class instance representing SNMP credentials.
|
|
|
|
transportTarget : :class:`~pysnmp.hlapi.twisted.UdpTransportTarget` or :class:`~pysnmp.hlapi.twisted.Udp6TransportTarget`
|
|
Class instance representing transport type along with SNMP peer address.
|
|
|
|
contextData : :class:`~pysnmp.hlapi.ContextData`
|
|
Class instance representing SNMP ContextEngineId and ContextName values.
|
|
|
|
\*varBinds : :class:`~pysnmp.smi.rfc1902.ObjectType`
|
|
One or more class instances representing MIB variables to place
|
|
into SNMP request.
|
|
|
|
Other Parameters
|
|
----------------
|
|
\*\*options :
|
|
Request options:
|
|
|
|
* `lookupMib` - load MIB and resolve response MIB variables at
|
|
the cost of slightly reduced performance. Default is `True`.
|
|
|
|
Returns
|
|
-------
|
|
deferred : :class:`~twisted.internet.defer.Deferred`
|
|
Twisted Deferred object representing work-in-progress. User
|
|
is expected to attach his own `success` and `error` callback
|
|
functions to the Deferred object though
|
|
:meth:`~twisted.internet.defer.Deferred.addCallbacks` method.
|
|
|
|
Raises
|
|
------
|
|
PySnmpError
|
|
Or its derivative indicating that an error occurred while
|
|
performing SNMP operation.
|
|
|
|
Notes
|
|
-----
|
|
User `success` callback is called with the following tuple as
|
|
its first argument:
|
|
|
|
* errorStatus (str) : True value indicates SNMP PDU error.
|
|
* errorIndex (int) : Non-zero value refers to `varBinds[errorIndex-1]`
|
|
* varBinds (tuple) : A sequence of
|
|
:class:`~pysnmp.smi.rfc1902.ObjectType` class instances representing
|
|
MIB variables returned in SNMP response.
|
|
|
|
User `error` callback is called with `errorIndication` object wrapped
|
|
in :class:`~twisted.python.failure.Failure` object.
|
|
|
|
Examples
|
|
--------
|
|
>>> from twisted.internet.task import react
|
|
>>> from pysnmp.hlapi.twisted import *
|
|
>>>
|
|
>>> def success(args):
|
|
... (errorStatus, errorIndex, varBinds) = args
|
|
... print(errorStatus, errorIndex, varBind)
|
|
...
|
|
>>> def failure(errorIndication):
|
|
... print(errorIndication)
|
|
...
|
|
>>> def run(reactor):
|
|
... d = setCmd(SnmpEngine(),
|
|
... CommunityData('public'),
|
|
... UdpTransportTarget(('demo.snmplabs.com', 161)),
|
|
... ContextData(),
|
|
... ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0), 'Linux i386')
|
|
... d.addCallback(success).addErrback(failure)
|
|
... return d
|
|
...
|
|
>>> react(run)
|
|
(0, 0, [ObjectType(ObjectIdentity(ObjectName('1.3.6.1.2.1.1.1.0')), DisplayString('Linux i386'))])
|
|
>>>
|
|
|
|
"""
|
|
def __cbFun(snmpEngine, sendRequestHandle,
|
|
errorIndication, errorStatus, errorIndex,
|
|
varBinds, cbCtx):
|
|
lookupMib, deferred = cbCtx
|
|
if errorIndication:
|
|
deferred.errback(Failure(errorIndication))
|
|
else:
|
|
deferred.callback(
|
|
(errorStatus, errorIndex,
|
|
vbProcessor.unmakeVarBinds(snmpEngine, varBinds, lookupMib))
|
|
)
|
|
|
|
addrName, paramsName = lcd.configure(snmpEngine, authData, transportTarget)
|
|
|
|
deferred = Deferred()
|
|
|
|
cmdgen.SetCommandGenerator().sendVarBinds(
|
|
snmpEngine, addrName, contextData.contextEngineId,
|
|
contextData.contextName,
|
|
vbProcessor.makeVarBinds(snmpEngine, varBinds), __cbFun,
|
|
(options.get('lookupMib', True), deferred)
|
|
)
|
|
return deferred
|
|
|
|
def nextCmd(snmpEngine, authData, transportTarget, contextData,
|
|
*varBinds, **options):
|
|
"""Performs SNMP GETNEXT query.
|
|
|
|
Based on passed parameters, prepares SNMP GETNEXT packet
|
|
(:RFC:`1905#section-4.2.2`) and schedules its transmission by
|
|
:mod:`twisted` I/O framework at a later point of time.
|
|
|
|
Parameters
|
|
----------
|
|
snmpEngine : :class:`~pysnmp.hlapi.SnmpEngine`
|
|
Class instance representing SNMP engine.
|
|
|
|
authData : :class:`~pysnmp.hlapi.CommunityData` or :class:`~pysnmp.hlapi.UsmUserData`
|
|
Class instance representing SNMP credentials.
|
|
|
|
transportTarget : :class:`~pysnmp.hlapi.twisted.UdpTransportTarget` or :class:`~pysnmp.hlapi.twisted.Udp6TransportTarget`
|
|
Class instance representing transport type along with SNMP peer address.
|
|
|
|
contextData : :class:`~pysnmp.hlapi.ContextData`
|
|
Class instance representing SNMP ContextEngineId and ContextName values.
|
|
|
|
\*varBinds : :class:`~pysnmp.smi.rfc1902.ObjectType`
|
|
One or more class instances representing MIB variables to place
|
|
into SNMP request.
|
|
|
|
Other Parameters
|
|
----------------
|
|
\*\*options :
|
|
Request options:
|
|
|
|
* `lookupMib` - load MIB and resolve response MIB variables at
|
|
the cost of slightly reduced performance. Default is `True`.
|
|
|
|
Returns
|
|
-------
|
|
deferred : :class:`~twisted.internet.defer.Deferred`
|
|
Twisted Deferred object representing work-in-progress. User
|
|
is expected to attach his own `success` and `error` callback
|
|
functions to the Deferred object though
|
|
:meth:`~twisted.internet.defer.Deferred.addCallbacks` method.
|
|
|
|
Raises
|
|
------
|
|
PySnmpError
|
|
Or its derivative indicating that an error occurred while
|
|
performing SNMP operation.
|
|
|
|
Notes
|
|
-----
|
|
User `success` callback is called with the following tuple as
|
|
its first argument:
|
|
|
|
* errorStatus (str) : True value indicates SNMP PDU error.
|
|
* errorIndex (int) : Non-zero value refers to `varBinds[errorIndex-1]`
|
|
* varBinds (tuple) :
|
|
A sequence of sequences (e.g. 2-D array) of
|
|
:py:class:`~pysnmp.smi.rfc1902.ObjectType` class instances
|
|
representing a table of MIB variables returned in SNMP response.
|
|
Inner sequences represent table rows and ordered exactly the same
|
|
as `varBinds` in request. Response to GETNEXT always contain
|
|
a single row.
|
|
|
|
User `error` callback is called with `errorIndication` object wrapped
|
|
in :class:`~twisted.python.failure.Failure` object.
|
|
|
|
Examples
|
|
--------
|
|
>>> from twisted.internet.task import react
|
|
>>> from pysnmp.hlapi.twisted import *
|
|
>>>
|
|
>>> def success(args):
|
|
... (errorStatus, errorIndex, varBindTable) = args
|
|
... print(errorStatus, errorIndex, varBindTable)
|
|
...
|
|
>>> def failure(errorIndication):
|
|
... print(errorIndication)
|
|
...
|
|
>>> def run(reactor):
|
|
... d = nextCmd(SnmpEngine(),
|
|
... CommunityData('public'),
|
|
... UdpTransportTarget(('demo.snmplabs.com', 161)),
|
|
... ContextData(),
|
|
... ObjectType(ObjectIdentity('SNMPv2-MIB', 'system'))
|
|
... d.addCallback(success).addErrback(failure)
|
|
... return d
|
|
...
|
|
>>> react(run)
|
|
(0, 0, [[ObjectType(ObjectIdentity(ObjectName('1.3.6.1.2.1.1.1.0')), DisplayString('SunOS zeus.snmplabs.com 4.1.3_U1 1 sun4m'))]])
|
|
>>>
|
|
|
|
"""
|
|
def __cbFun(snmpEngine, sendRequestHandle,
|
|
errorIndication, errorStatus, errorIndex,
|
|
varBindTable, cbCtx):
|
|
lookupMib, deferred = cbCtx
|
|
if errorIndication:
|
|
deferred.errback(Failure(errorIndication))
|
|
else:
|
|
deferred.callback(
|
|
(errorStatus, errorIndex,
|
|
[vbProcessor.unmakeVarBinds(snmpEngine, varBindTableRow, lookupMib) for varBindTableRow in varBindTable])
|
|
)
|
|
|
|
addrName, paramsName = lcd.configure(snmpEngine, authData, transportTarget)
|
|
|
|
deferred = Deferred()
|
|
|
|
cmdgen.NextCommandGenerator().sendVarBinds(
|
|
snmpEngine, addrName, contextData.contextEngineId,
|
|
contextData.contextName,
|
|
vbProcessor.makeVarBinds(snmpEngine, varBinds), __cbFun,
|
|
(options.get('lookupMib', True), deferred)
|
|
)
|
|
return deferred
|
|
|
|
def bulkCmd(snmpEngine, authData, transportTarget, contextData,
|
|
nonRepeaters, maxRepetitions, *varBinds, **options):
|
|
"""Performs SNMP GETBULK query.
|
|
|
|
Based on passed parameters, prepares SNMP GETNEXT packet
|
|
(:RFC:`1905#section-4.2.3`) and schedules its transmission by
|
|
:mod:`twisted` I/O framework at a later point of time.
|
|
|
|
Parameters
|
|
----------
|
|
snmpEngine : :class:`~pysnmp.hlapi.SnmpEngine`
|
|
Class instance representing SNMP engine.
|
|
|
|
authData : :class:`~pysnmp.hlapi.CommunityData` or :class:`~pysnmp.hlapi.UsmUserData`
|
|
Class instance representing SNMP credentials.
|
|
|
|
transportTarget : :class:`~pysnmp.hlapi.twisted.UdpTransportTarget` or :class:`~pysnmp.hlapi.twisted.Udp6TransportTarget`
|
|
Class instance representing transport type along with SNMP peer address.
|
|
|
|
contextData : :class:`~pysnmp.hlapi.ContextData`
|
|
Class instance representing SNMP ContextEngineId and ContextName values.
|
|
|
|
nonRepeaters : int
|
|
One MIB variable is requested in response for the first
|
|
`nonRepeaters` MIB variables in request.
|
|
|
|
maxRepetitions : int
|
|
`maxRepetitions` MIB variables are requested in response for each
|
|
of the remaining MIB variables in the request (e.g. excluding
|
|
`nonRepeaters`). Remote SNMP engine may choose lesser value than
|
|
requested.
|
|
|
|
\*varBinds : :class:`~pysnmp.smi.rfc1902.ObjectType`
|
|
One or more class instances representing MIB variables to place
|
|
into SNMP request.
|
|
|
|
Other Parameters
|
|
----------------
|
|
\*\*options :
|
|
Request options:
|
|
|
|
* `lookupMib` - load MIB and resolve response MIB variables at
|
|
the cost of slightly reduced performance. Default is `True`.
|
|
|
|
Returns
|
|
-------
|
|
deferred : :class:`~twisted.internet.defer.Deferred`
|
|
Twisted Deferred object representing work-in-progress. User
|
|
is expected to attach his own `success` and `error` callback
|
|
functions to the Deferred object though
|
|
:meth:`~twisted.internet.defer.Deferred.addCallbacks` method.
|
|
|
|
Raises
|
|
------
|
|
PySnmpError
|
|
Or its derivative indicating that an error occurred while
|
|
performing SNMP operation.
|
|
|
|
Notes
|
|
-----
|
|
User `success` callback is called with the following tuple as
|
|
its first argument:
|
|
|
|
* errorStatus (str) : True value indicates SNMP PDU error.
|
|
* errorIndex (int) : Non-zero value refers to `varBinds[errorIndex-1]`
|
|
* varBinds (tuple) :
|
|
A sequence of sequences (e.g. 2-D array) of
|
|
:py:class:`~pysnmp.smi.rfc1902.ObjectType` class instances
|
|
representing a table of MIB variables returned in SNMP response.
|
|
Inner sequences represent table rows and ordered exactly the same
|
|
as `varBinds` in request. Number of rows might be less or equal
|
|
to `maxRepetitions` value in request.
|
|
|
|
User `error` callback is called with `errorIndication` object wrapped
|
|
in :class:`~twisted.python.failure.Failure` object.
|
|
|
|
Examples
|
|
--------
|
|
>>> from twisted.internet.task import react
|
|
>>> from pysnmp.hlapi.twisted import *
|
|
>>>
|
|
>>> def success(args):
|
|
... (errorStatus, errorIndex, varBindTable) = args
|
|
... print(errorStatus, errorIndex, varBindTable)
|
|
...
|
|
>>> def failure(errorIndication):
|
|
... print(errorIndication)
|
|
...
|
|
>>> def run(reactor):
|
|
... d = bulkCmd(SnmpEngine(),
|
|
... CommunityData('public'),
|
|
... UdpTransportTarget(('demo.snmplabs.com', 161)),
|
|
... ContextData(),
|
|
... 0, 2,
|
|
... ObjectType(ObjectIdentity('SNMPv2-MIB', 'system'))
|
|
... d.addCallback(success).addErrback(failure)
|
|
... return d
|
|
...
|
|
>>> react(run)
|
|
(0, 0, [[ObjectType(ObjectIdentity(ObjectName('1.3.6.1.2.1.1.1.0')), DisplayString('SunOS zeus.snmplabs.com 4.1.3_U1 1 sun4m')), ObjectType(ObjectIdentity(ObjectName('1.3.6.1.2.1.1.2.0')), ObjectIdentifier('1.3.6.1.4.1.424242.1.1')]])
|
|
>>>
|
|
|
|
"""
|
|
def __cbFun(snmpEngine, sendRequestHandle,
|
|
errorIndication, errorStatus, errorIndex,
|
|
varBindTable, cbCtx):
|
|
lookupMib, deferred = cbCtx
|
|
if errorIndication:
|
|
deferred.errback(Failure(errorIndication))
|
|
else:
|
|
deferred.callback(
|
|
(errorStatus, errorIndex,
|
|
[vbProcessor.unmakeVarBinds(snmpEngine, varBindTableRow, lookupMib) for varBindTableRow in varBindTable])
|
|
)
|
|
|
|
addrName, paramsName = lcd.configure(snmpEngine, authData, transportTarget)
|
|
|
|
deferred = Deferred()
|
|
|
|
cmdgen.BulkCommandGenerator().sendVarBinds(
|
|
snmpEngine, addrName, contextData.contextEngineId,
|
|
contextData.contextName, nonRepeaters, maxRepetitions,
|
|
vbProcessor.makeVarBinds(snmpEngine, varBinds),
|
|
__cbFun,
|
|
(options.get('lookupMib', True), deferred)
|
|
)
|
|
return deferred
|