def __init__(self,
snmpEngineID=None,
maxMessageSize=65507,
msgAndPduDsp=None):
self.cache = {}
self.observer = observer.MetaObserver()
if msgAndPduDsp is None:
self.msgAndPduDsp = MsgAndPduDispatcher()
else:
self.msgAndPduDsp = msgAndPduDsp
self.messageProcessingSubsystems = {
SnmpV1MessageProcessingModel.messageProcessingModelID:
SnmpV1MessageProcessingModel(),
SnmpV2cMessageProcessingModel.messageProcessingModelID:
SnmpV2cMessageProcessingModel(),
SnmpV3MessageProcessingModel.messageProcessingModelID:
SnmpV3MessageProcessingModel()
}
self.securityModels = {
SnmpV1SecurityModel.securityModelID: SnmpV1SecurityModel(),
SnmpV2cSecurityModel.securityModelID: SnmpV2cSecurityModel(),
SnmpUSMSecurityModel.securityModelID: SnmpUSMSecurityModel()
}
self.accessControlModel = {
void.Vacm.accessModelID: void.Vacm(),
rfc3415.Vacm.accessModelID: rfc3415.Vacm()
}
self.transportDispatcher = None
if self.msgAndPduDsp.mibInstrumController is None:
raise error.PySnmpError('MIB instrumentation does not yet exist')
snmpEngineMaxMessageSize, = self.msgAndPduDsp.mibInstrumController.mibBuilder.importSymbols(
'__SNMP-FRAMEWORK-MIB', 'snmpEngineMaxMessageSize')
snmpEngineMaxMessageSize.syntax = snmpEngineMaxMessageSize.syntax.clone(
maxMessageSize)
snmpEngineBoots, = self.msgAndPduDsp.mibInstrumController.mibBuilder.importSymbols(
'__SNMP-FRAMEWORK-MIB', 'snmpEngineBoots')
snmpEngineBoots.syntax = snmpEngineBoots.syntax + 1
origSnmpEngineID, = self.msgAndPduDsp.mibInstrumController.mibBuilder.importSymbols(
'__SNMP-FRAMEWORK-MIB', 'snmpEngineID')
if snmpEngineID is not None:
origSnmpEngineID.syntax = origSnmpEngineID.syntax.clone(
snmpEngineID)
self.snmpEngineID = origSnmpEngineID.syntax
def __init__(self, snmpEngineID=None, maxMessageSize=65507,
msgAndPduDsp=None):
self.cache = {}
self.observer = observer.MetaObserver()
if msgAndPduDsp is None:
self.msgAndPduDsp = MsgAndPduDispatcher()
else:
self.msgAndPduDsp = msgAndPduDsp
mibBuilder = self.msgAndPduDsp.mibInstrumController.mibBuilder
self.messageProcessingSubsystems = {
SnmpV1MessageProcessingModel.MESSAGE_PROCESSING_MODEL_ID:
SnmpV1MessageProcessingModel(),
SnmpV2cMessageProcessingModel.MESSAGE_PROCESSING_MODEL_ID:
SnmpV2cMessageProcessingModel(),
SnmpV3MessageProcessingModel.MESSAGE_PROCESSING_MODEL_ID:
SnmpV3MessageProcessingModel()
}
self.securityModels = {
SnmpV1SecurityModel.SECURITY_MODEL_ID: SnmpV1SecurityModel(),
SnmpV2cSecurityModel.SECURITY_MODEL_ID: SnmpV2cSecurityModel(),
SnmpUSMSecurityModel.SECURITY_MODEL_ID: SnmpUSMSecurityModel()
}
self.accessControlModel = {
void.Vacm.ACCESS_MODEL_ID: void.Vacm(),
rfc3415.Vacm.ACCESS_MODEL_ID: rfc3415.Vacm()
}
self.transportDispatcher = None
if self.msgAndPduDsp.mibInstrumController is None:
raise error.PySnmpError('MIB instrumentation does not yet exist')
snmpEngineMaxMessageSize, = mibBuilder.importSymbols(
'__SNMP-FRAMEWORK-MIB', 'snmpEngineMaxMessageSize')
snmpEngineMaxMessageSize.syntax = snmpEngineMaxMessageSize.syntax.clone(maxMessageSize)
snmpEngineBoots, = mibBuilder.importSymbols(
'__SNMP-FRAMEWORK-MIB', 'snmpEngineBoots')
snmpEngineBoots.syntax += 1
origSnmpEngineID, = mibBuilder.importSymbols(
'__SNMP-FRAMEWORK-MIB', 'snmpEngineID')
if snmpEngineID is None:
self.snmpEngineID = origSnmpEngineID.syntax
else:
origSnmpEngineID.syntax = origSnmpEngineID.syntax.clone(snmpEngineID)
self.snmpEngineID = origSnmpEngineID.syntax
debug.logger & debug.FLAG_APP and debug.logger(
'SnmpEngine: using custom SNMP Engine '
'ID: %s' % self.snmpEngineID.prettyPrint())
# Attempt to make some of snmp Engine settings persistent.
# This should probably be generalized as a non-volatile MIB store.
persistentPath = os.path.join(tempfile.gettempdir(), '__pysnmp',
self.snmpEngineID.prettyPrint())
debug.logger & debug.FLAG_APP and debug.logger(
'SnmpEngine: using persistent directory: %s' % persistentPath)
if not os.path.exists(persistentPath):
try:
os.makedirs(persistentPath)
except OSError:
return
f = os.path.join(persistentPath, 'boots')
try:
snmpEngineBoots.syntax = snmpEngineBoots.syntax.clone(open(f).read())
except Exception:
pass
try:
snmpEngineBoots.syntax += 1
except Exception:
snmpEngineBoots.syntax = snmpEngineBoots.syntax.clone(1)
try:
fd, fn = tempfile.mkstemp(dir=persistentPath)
os.write(fd, str2octs(snmpEngineBoots.syntax.prettyPrint()))
os.close(fd)
shutil.move(fn, f)
except Exception as exc:
debug.logger & debug.FLAG_APP and debug.logger(
'SnmpEngine: could not stored SNMP Engine Boots: %s' % exc)
else:
debug.logger & debug.FLAG_APP and debug.logger(
'SnmpEngine: stored SNMP Engine Boots: '
'%s' % snmpEngineBoots.syntax.prettyPrint())