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from pysnmp.proto import error
class AbstractSecurityModel:
securityModelID = None
__stateReference = 0L
def __init__(self):
self.__cacheEntries = {}
def processIncomingMsg(
self,
snmpEngine,
messageProcessingModel,
maxMessageSize,
securityParameters,
securityModel,
securityLevel,
wholeMsg,
msg,
):
raise error.ProtocolError(
'Security model %s not implemented' % self
)
def generateRequestMsg(
self,
snmpEngine,
messageProcessingModel,
globalData,
maxMessageSize,
securityModel,
securityEngineID,
securityName,
securityLevel,
scopedPDU,
):
raise error.ProtocolError(
'Security model %s not implemented' % self
)
def generateResponseMsg(
self,
snmpEngine,
messageProcessingModel,
globalData,
maxMessageSize,
securityModel,
securityEngineID,
securityName,
securityLevel,
scopedPDU,
securityStateReference
):
raise error.ProtocolError(
'Security model %s not implemented' % self
)
# Caching stuff
def _cachePush(self, **securityData):
stateReference = AbstractSecurityModel.__stateReference
AbstractSecurityModel.__stateReference = stateReference + 1
self.__cacheEntries[stateReference] = securityData
return stateReference
def _cachePop(self, stateReference):
securityData = self.__cacheEntries.get(stateReference)
if securityData is None:
raise error.ProtocolError(
'Cache miss for stateReference=%s at %s' %
(stateReference, self)
)
del self.__cacheEntries[stateReference]
return securityData
def releaseStateInformation(self, stateReference):
self._cachePop(stateReference)
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