def check_power(self, ipmi_server, node_id):
power_states = self.client.get_power_state(ipmi_server)
cluster_name = self._cfg.clusters[0].name
node_name = cluster_name + '-' + str(node_id + 1)
# notify on every failed PS we find and set notified state to True
try:
for PS in power_states['FAIL']:
if not self.notified_power_supply_failure[node_id][PS]:
message = PS + " in " + node_name + " failed"
subject = "[ALERT] Qumulo Power Supply Failure " + node_name
self.notify(subject,
message,
"powerSupplyFailureTrap",
[(rfc1902.ObjectName('1.3.6.1.4.1.47017.8'),
rfc1902.OctetString(node_name)),
(rfc1902.ObjectName('1.3.6.1.4.1.47017.11'),
rfc1902.OctetString(PS))
]
)
self.notified_power_supply_failure[node_id][PS] = True
except TypeError, err:
self.logger.warn("WARNING: IPMI Exception, please verify IPMI config. (%s)"
% str(err))
def dictify(self):
if self.__varbinds_dict is None:
self.__varbinds_dict = {}
for entry in self.__varbinds:
if isinstance(entry, list):
for oid, value in entry:
# always store internal data using rfc1902.ObjectNames, which are pyasn1 ObjectIdentifiers, which behave like tuples
if not value.isSameTypeWith(rfc1905.noSuchObject):
self.__varbinds_dict[rfc1902.ObjectName(
oid)] = value
else:
oid, value = entry
if not value.isSameTypeWith(rfc1905.noSuchObject):
self.__varbinds_dict[rfc1902.ObjectName(oid)] = value
def __getFDBTable(self, result):
portsTable = self.snmp.walk(OID.dot1dTpFdbPort)
learnedTypeTable = self.snmp.walk(OID.dot1dTpFdbStatus)
for learnedTypeTableRow in learnedTypeTable:
for learnedname, learnedval in learnedTypeTableRow:
if learnedval == rfc1902.Integer32('3'):
learnedname = rfc1902.ObjectName(
(learnedname.prettyPrint()).replace(
OID.dot1dTpFdbStatus.prettyPrint(),
OID.dot1dTpFdbPort.prettyPrint()))
for portTableRow in portsTable:
for portname, portval in portTableRow:
if learnedname == portname:
result.append(
MACTableEntry(
("%02x:%02x:%02x:%02x:%02x:%02x" %
(int(learnedname[11]),
int(learnedname[12]),
int(learnedname[13]),
int(learnedname[14]),
int(learnedname[15]),
int(learnedname[16]))).replace(
"0x", "").upper(), portval, '3',
self.getSwitchName()))
#return result
return
for key in learnedTypeTable.keys():
if (learnedTypeTable[key] == str(3)):
mac = MACTableEntry(
(macAddressesTable[key]).replace(' ', ':', 5).upper(),
portsTable[key], learnedTypeTable[key])
mac.setSwitch(self.getSwitchID())
result.append(mac)
def getColumn(self, name, context=None):
# if val is not None and varBindHead[idx].isPrefixOf(name): in cmdgen
# fails so I can't use the oneliner method
oid = ''
if self.isDotNotation(name):
oid = name
else:
oid = self.mibs[name].get('oid')
if context == None:
context = self.context
cmdGen = MyCmdGen()
errorIndication, errorStatus, _, varBinds = cmdGen.getColumn(
self.agent, context, self.host, self.port, rfc1902.ObjectName(oid))
if errorIndication:
raise IOError(errorIndication)
if errorStatus:
if len(varBinds) > 0 and errorStatus == 32:
pass
else:
raise SNMPError('getcolumn on ' + oid + '(' + name + ')',
errorStatus)
#if errorStatus:
# Throw an error??
# do we need to do error checking on this???
# what format should this return in???
formattedList = []
for val in varBinds:
formattedList.append(val[0][1].prettyPrint())
return formattedList
def getFullMACTable(self):
"""\brief Gets the full learned mac table from the switch, returning a list of MACTableEntry objects.
\return (\c list) A list of MACTableEntry objects with the results.
"""
portsTable = self.snmp.walk(OID.dot1dTpFdbPort)
learnedTypeTable = self.snmp.walk(OID.dot1dTpFdbStatus)
result = []
for learnedTypeTableRow in learnedTypeTable:
for learnedname, learnedval in learnedTypeTableRow:
if learnedval == rfc1902.Integer32('3'):
learnedname = rfc1902.ObjectName((learnedname.prettyPrint()).replace(OID.dot1dTpFdbStatus.prettyPrint(),OID.dot1dTpFdbPort.prettyPrint()))
for portTableRow in portsTable:
for portname, portval in portTableRow:
if learnedname == portname:
result.append(MACTableEntry(("%02x:%02x:%02x:%02x:%02x:%02x" % (int(learnedname[11]),int(learnedname[12]),int(learnedname[13]),int(learnedname[14]),int(learnedname[15]),int(learnedname[16]))).replace("0x","").upper(),portval,'3',self.__switchName))
return result
for key in learnedTypeTable.keys():
if (learnedTypeTable[key] == str(3)):
mac = MACTableEntry((macAddressesTable[key]).replace(' ',':',5).upper(),portsTable[key],learnedTypeTable[key])
mac.setSwitch(self.getSwitchID())
result.append(mac)
def get(self, name, instance=0, context=None):
oid = ''
if self.isDotNotation(name):
oid = name
else:
oid = self.mibs[name].get('oid')
# 2012-04-04, pcankar: if instance is -1 leave oid unchanged
if instance != -1:
oid += '.' + str(instance)
if context == None:
context = self.context
cmdGen = MyCmdGen()
errorIndication, errorStatus, _, varBinds = cmdGen.getCmd(
self.agent, context, self.host, self.port, rfc1902.ObjectName(oid))
if errorIndication:
raise IOError(errorIndication)
if errorStatus:
raise SNMPError('get on ' + oid + '(' + name + ')', errorStatus)
# Throw an error??
# do we need to do error checking on this???
#print "Getting %s (%s) = %s" % (name, oid, str(varBinds[-1][1].prettyPrint()))
return varBinds[-1][1].prettyPrint()
def getnext(self, name, instance=0, context=None):
# if val is not None and varBindHead[idx].isPrefixOf(name): in cmdgen
# fails so I can't use the oneliner method
oid = ''
if self.isDotNotation(name):
oid = name
else:
oid = self.mibs[name].get('oid')
# 2012-04-04, pcankar: if instance is -1 leave oid unchanged
if instance != -1:
oid += '.' + str(instance)
if context == None:
context = self.context
cmdGen = MyCmdGen()
errorIndication, errorStatus, _, varBinds = cmdGen.nextCmd(
self.agent, context, self.host, self.port, rfc1902.ObjectName(oid))
if errorIndication:
raise IOError(errorIndication)
if errorStatus:
raise SNMPError('getnext on ' + oid + '(' + name + ')',
errorStatus)
#if errorStatus:
# Throw an error??
# do we need to do error checking on this???
# what format should this return in???
return varBinds
def add_oid(self, oid, oid_type_str, getValue):
oid_num = rfc1902.ObjectName(oid).asTuple()
oid_type = TYPE_MAP[oid_type_str]
self.mibBuilder.exportSymbols(
'__MY_MIB', self.MibScalar(oid_num[:-1], oid_type),
createVariable(self.MibScalarInstance, getValue, oid_num[:-1],
(oid_num[-1], ), oid_type))
def __getSimpleMACTable(self):
"""\brief Gets the full learned mac table from the switch, returning a list of MACTableEntry objects.
\return (\c list) A list of MACTableEntry objects with the results.
"""
portsTable = self.getDot1qTpFdbPort(True)
learnedTypeTable = self.getDot1qTpFdbStatus(True)
result = []
for learnedTypeTableRow in learnedTypeTable:
for learnedname, learnedval in learnedTypeTableRow:
if learnedval == rfc1902.Integer32('3'):
learnedname = rfc1902.ObjectName(
(learnedname.prettyPrint()).replace(
OID.dot1qTpFdbStatus.prettyPrint(),
OID.dot1qTpFdbPort.prettyPrint()))
for portTableRow in portsTable:
for portname, portval in portTableRow:
if learnedname == portname:
mac = ("%02x:%02x:%02x:%02x:%02x:%02x" % (
int(learnedname[14]), int(learnedname[15]),
int(learnedname[16]), int(learnedname[17]),
int(learnedname[18]), int(
learnedname[19])))
mac = mac.replace("0x", "").upper()
result.append((mac, str(portval)))
return result
def addMacsToPorts(self):
portsTable = self.getDot1qTpFdbPort(True)
learnedTypeTable = self.getDot1qTpFdbStatus(True)
self.resetPortsMacInfo()
for learnedTypeTableRow in learnedTypeTable:
for learnedname, learnedval in learnedTypeTableRow:
if learnedval == rfc1902.Integer32('3'):
learnedname = rfc1902.ObjectName(
(learnedname.prettyPrint()).replace(
OID.dot1qTpFdbStatus.prettyPrint(),
OID.dot1qTpFdbPort.prettyPrint()))
for portTableRow in portsTable:
for portname, portval in portTableRow:
if learnedname == portname:
mac = ("%02x:%02x:%02x:%02x:%02x:%02x" % (
int(learnedname[14]), int(learnedname[15]),
int(learnedname[16]), int(learnedname[17]),
int(learnedname[18]), int(
learnedname[19])))
mac = mac.replace("0x", "").upper()
port = self.getPort(portval)
mac_list = port.getMacs()
mac_list.append(mac)
port.setMacs(mac_list)
def variate(oid, tag, value, **context):
# in --v2c-arch some of the items are not defined
transportDomain = transportAddress = securityModel = securityName = \
securityLevel = contextName = '<undefined>'
if 'transportDomain' in context:
transportDomain = rfc1902.ObjectName(
context['transportDomain']).prettyPrint()
if 'transportAddress' in context:
transportAddress = ':'.join(
[str(x) for x in context['transportAddress']])
if 'securityModel' in context:
securityModel = str(context['securityModel'])
if 'securityName' in context:
securityName = str(context['securityName'])
if 'securityLevel' in context:
securityLevel = str(context['securityLevel'])
if 'contextName' in context:
contextName = str(context['contextName'])
args = [(x.replace('@TRANSPORTDOMAIN@', transportDomain).replace(
'@TRANSPORTADDRESS@', transportAddress).replace(
'@SECURITYMODEL@',
securityModel).replace('@SECURITYNAME@', securityName).replace(
'@SECURITYLEVEL@',
securityLevel).replace('@CONTEXTNAME@', contextName).replace(
'@DATAFILE@',
context['dataFile']).replace('@OID@', str(oid)).replace(
'@TAG@', tag).replace('@ORIGOID@',
str(context['origOid'])).
replace('@ORIGTAG@',
str(sum(
[x
for x in context['origValue'].tagSet[0]]))).replace(
'@ORIGVALUE@',
str(context['origValue'])).replace(
'@SETFLAG@',
str(int(context['setFlag']))).replace(
'@NEXTFLAG@',
str(int(context['nextFlag']))).replace(
'@SUBTREEFLAG@',
str(int(context['subtreeFlag']))))
for x in split(value, ' ')]
log.msg('subprocess: executing external process "%s"' % ' '.join(args))
call = (hasattr(subprocess, 'check_output') and subprocess.check_output
or hasattr(subprocess, 'check_call') and subprocess.check_call
or subprocess.call)
if not hasattr(subprocess, 'check_output'):
log.msg('subprocess: old Python, expect no output!')
try:
return oid, tag, call(args, shell=moduleContext['settings']['shell'])
except (hasattr(subprocess, 'CalledProcessError')
and subprocess.CalledProcessError or Exception):
log.msg('subprocess: external program execution failed')
return context['origOid'], tag, context['errorStatus']
def nodename(oid):
"""Translate dotted-decimal oid or oid tuple to symbolic name"""
if isinstance(oid, str):
oid = rfc1902.ObjectName(oid)
oid = __mibViewController.getNodeLocation(oid) # pylint:disable=R0204
name = '::'.join(oid[:-1])
noid = '.'.join([str(x) for x in oid[-1]])
if noid:
name += '.' + noid
return name
def test__get_device_nibble_map(self):
self.client = snmp_client.get_client(self.snmp_info)
seg_id = 1001
egrs_oid = hp_const.OID_VLAN_EGRESS_PORT + '.' + str(seg_id)
varbinds = [(rfc1902.ObjectName('1.3.6.1.2.1.17.7.1.4.3.1.2.1001'),
rfc1902.OctetString('\x80'))]
with contextlib.nested(
mock.patch.object(snmp_client.SNMPClient,
'get',
return_value=varbinds)):
egbytes = self.driver._get_device_nibble_map(self.client, egrs_oid)
self.assertEqual(egbytes, '\x80')
def getBulk(self,
name,
nonRepeaters,
maxRepititions,
context=None,
dict=False):
# if val is not None and varBindHead[idx].isPrefixOf(name): in cmdgen
# fails so I can't use the oneliner method
oid = ''
if self.isDotNotation(name):
oid = name
else:
oid = self.mibs[name].get('oid')
if context == None:
context = self.context
# cmdGen = MyCmdGen()
# errorIndication, errorStatus, _, varBinds = cmdGen.getBulk(
# self.agent, context,
# self.host, self.port,
# nonRepeaters,
# maxRepititions,
# rfc1902.ObjectName(oid))
errorIndication, errorStatus, _, varBinds = cg.CommandGenerator(
).bulkCmd(cg.CommunityData(self.agent, context),
cg.UdpTransportTarget((self.host, self.port)), nonRepeaters,
maxRepititions, rfc1902.ObjectName(oid))
if errorIndication:
raise IOError(errorIndication)
if errorStatus:
if len(varBinds) > 0 and errorStatus == 32:
pass
else:
raise SNMPError('getbulk on ' + oid + '(' + name + ')',
errorStatus)
formattedList = []
for val in varBinds:
formattedList.append(val[0][1].prettyPrint())
formattedDict = {}
for val in varBinds:
formattedDict[val[0][0].prettyPrint()] = val[0][1].prettyPrint()
if dict:
return formattedDict
return formattedList
def send(self, mib, value, value_type='OctetString'):
"""
v1 snmp, public
"""
if not self.authData:
raise ValueError('Credentials not set, use .security_XXX() methods')
obj_class = getattr(rfc1902, value_type)
errorIndication = self.ntfOrg.sendNotification(self.authData,
ntforg.UdpTransportTarget((self.host, self.port)), #transportTarget
'trap', #notifyType
ntforg.MibVariable('SNMPv2-MIB', 'snmpOutTraps'), #notificationType
((rfc1902.ObjectName(mib),
obj_class(value))))
if errorIndication:
raise RuntimeError('Notification not sent: %s' % errorIndication)
print('Sent SNMP TRAP {} "{}" to {} {}'.format(mib, value, self.host, self.port))
def _to_pysnmp(self, value):
""" Convert connection plugin object into pysnmp objects """
if value is None:
return None
if isinstance(value, OctetString):
return rfc1902.OctetString(str(value.value))
if isinstance(value, ObjectIdentifier):
return rfc1902.ObjectName(str(value.value))
if isinstance(value, Integer32):
return rfc1902.Integer32(int(value.value))
if isinstance(value, Counter32):
return rfc1902.Counter32(long(value.value))
if isinstance(value, IpAddress):
return rfc1902.IpAddress(str(value.value))
if isinstance(value, Gauge32):
return rfc1902.Gauge32(long(value.value))
if isinstance(value, TimeTicks):
return rfc1902.TimeTicks(long(value.value))
if isinstance(value, Opaque):
return rfc1902.Opaque(value.value) # FIXME
if isinstance(value, Counter64):
return rfc1902.Counter64(str(value.value))
raise SnmpError('Invalid type: %s' % value.__class__.__name__)
def get_by_dict(self, oid):
self.dictify()
if oid is None and len(list(self.__varbinds_dict.keys())) == 1:
oid = list(self.__varbinds_dict.keys())[0]
elif oid is None:
raise RuntimeError(
"Cannot query oid %r if multiple varBinds keys are present")
if isinstance(oid, str):
if oid in self.__varbinds_dict:
value = self.__varbinds_dict[oid]
else:
value = self.__varbinds_dict[rfc1902.ObjectName(nodeid(oid))]
if value.isSameTypeWith(rfc1905.noSuchObject):
return None
return value
elif isinstance(oid, tuple) or isinstance(oid, rfc1902.ObjectName):
value = self.__varbinds_dict[oid]
if value.isSameTypeWith(rfc1905.noSuchObject):
return None
else:
return value
else:
raise RuntimeError("Unknown format of oid %r with type %s" %
(oid, oid.__class__.__name__))
def rpc_get(self, id, *object_ids):
pysnmp_var_names = []
for object_id in object_ids:
pysnmp_var_names.append(rfc1902.ObjectName(str(object_id)))
self._conn.get(pysnmp_var_names, (self._on_rpc_get, id))
class VarBind(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('name', rfc1902.ObjectName()),
namedtype.NamedType('', _BindValue()))
def resolveWithMib(self, mibViewController, oidOnly=False):
if self.__mibSourcesToAdd is not None:
mibSources = tuple(
[ ZipMibSource(x) for x in self.__mibSourcesToAdd ]
) + mibViewController.mibBuilder.getMibSources()
mibViewController.mibBuilder.setMibSources(*mibSources)
self.__mibSourcesToAdd = None
if self.__modNamesToLoad is not None:
mibViewController.mibBuilder.loadModules(*self.__modNamesToLoad)
self.__modNamesToLoad = None
if self.__state & (self.stOidOnly | self.stClean):
return self
MibScalar, MibTableColumn, = mibViewController.mibBuilder.importSymbols('SNMPv2-SMI', 'MibScalar', 'MibTableColumn')
if len(self.__args) == 1: # OID or label
try:
self.__oid = rfc1902.ObjectName(self.__args[0])
except PyAsn1Error:
try:
label = tuple(self.__args[0].split('.'))
except ValueError:
raise PySnmpError('Bad OID format %s' % (self.__args[0],))
prefix, label, suffix = mibViewController.getNodeNameByOid(
label
)
if suffix:
try:
suffix = tuple([ int(x) for x in suffix ])
except ValueError:
raise PySnmpError('Unknown object name component %s' % (suffix,))
self.__oid = rfc1902.ObjectName(prefix + suffix)
self.__state |= self.stOidOnly
if oidOnly:
return self
else:
self.__state |= self.stOidOnly
if oidOnly:
return self
prefix, label, suffix = mibViewController.getNodeNameByOid(
self.__oid
)
modName, symName, _ = mibViewController.getNodeLocation(prefix)
self.__modName = modName
self.__symName = symName
self.__label = label
mibNode, = mibViewController.mibBuilder.importSymbols(
modName, symName
)
self.__mibNode = mibNode
if isinstance(mibNode, MibTableColumn): # table column
rowModName, rowSymName, _ = mibViewController.getNodeLocation(
mibNode.name[:-1]
)
rowNode, = mibViewController.mibBuilder.importSymbols(
rowModName, rowSymName
)
self.__indices = rowNode.getIndicesFromInstId(suffix)
elif isinstance(mibNode, MibScalar): # scalar
self.__indices = ( rfc1902.ObjectName(suffix), )
else:
self.__indices = ( rfc1902.ObjectName(suffix), )
self.__state |= self.stUnresolved
self.__state |= self.stClean
return self
elif len(self.__args) > 1: # MIB, symbol[, index, index ...]
self.__modName = self.__args[0]
if self.__args[1]:
self.__symName = self.__args[1]
else:
mibViewController.mibBuilder.loadModules(self.__modName)
oid, _, _ = mibViewController.getFirstNodeName(self.__modName)
_, self.__symName, _ = mibViewController.getNodeLocation(oid)
mibNode, = mibViewController.mibBuilder.importSymbols(
self.__modName, self.__symName
)
self.__mibNode = mibNode
self.__indices = ()
self.__oid = rfc1902.ObjectName(mibNode.getName())
prefix, label, suffix = mibViewController.getNodeNameByOid(
self.__oid
)
self.__label = label
if isinstance(mibNode, MibTableColumn): # table
rowModName, rowSymName, _ = mibViewController.getNodeLocation(
mibNode.name[:-1]
)
rowNode, = mibViewController.mibBuilder.importSymbols(
rowModName, rowSymName
)
if self.__args[2:]:
instIds = rowNode.getInstIdFromIndices(*self.__args[2:])
self.__oid += instIds
self.__indices = rowNode.getIndicesFromInstId(instIds)
elif self.__args[2:]: # any other kind of MIB node with indices
instId = rfc1902.ObjectName(
'.'.join([ str(x) for x in self.__args[2:] ])
)
self.__oid += instId
self.__indices = ( instId, )
self.__state |= (self.stClean | self.stOidOnly)
return self
else:
raise PySnmpError('Non-OID, label or MIB symbol')
# include managed object information 1.3.6.1.2.1.1.1.0 = 'my system'
# include managed object information 1.3.6.1.2.1.1.3.0 = 567
errorIndication = ntfOrg.sendNotification(
ntforg.UsmUserData('usr-sha-aes',
'authkey1',
'privkey1',
authProtocol=ntforg.usmHMACSHAAuthProtocol,
privProtocol=ntforg.usmAesCfb128Protocol),
ntforg.Udp6TransportTarget(('::1', 162)), 'trap',
ntforg.MibVariable('SNMPv2-MIB', 'authenticationFailure'),
('1.3.6.1.2.1.1.1.0', rfc1902.OctetString('my system')),
('1.3.6.1.2.1.1.3.0', rfc1902.TimeTicks(567)))
if errorIndication:
print('Notification not sent: %s' % errorIndication)
# Using
# SNMPv3 user 'usr-none-none', no auth, no priv
# over IPv4/UDP
# send TRAP notification
# with TRAP ID 'authenticationFailure' specified as a MIB symbol
# include managed object information 1.3.6.1.2.1.1.2.0 = 1.3.6.1.2.1.1.1
errorIndication = ntfOrg.sendNotification(
ntforg.UsmUserData('usr-none-none'),
ntforg.UdpTransportTarget(('localhost', 162)), 'trap',
ntforg.MibVariable('SNMPv2-MIB', 'authenticationFailure'),
('1.3.6.1.2.1.1.2.0', rfc1902.ObjectName('1.3.6.1.2.1.1.1')))
if errorIndication:
print('Notification not sent: %s' % errorIndication)
def variate(oid, tag, value, **context):
if 'settings' not in recordContext:
recordContext['settings'] = dict(
[split(x, '=') for x in split(value, ',')])
if 'dir' not in recordContext['settings']:
log.msg('multiplex: snapshot directory not specified')
return context['origOid'], tag, context['errorStatus']
recordContext['settings']['dir'] = recordContext['settings'][
'dir'].replace('/', os.path.sep)
if recordContext['settings']['dir'][0] != os.path.sep:
for x in confdir.data:
d = os.path.join(x, recordContext['settings']['dir'])
if os.path.exists(d):
break
else:
log.msg('multiplex: directory %s not found' %
recordContext['settings']['dir'])
return context['origOid'], tag, context['errorStatus']
else:
d = recordContext['settings']['dir']
recordContext['dirmap'] = dict([
(int(os.path.basename(x).split(os.path.extsep)[0]),
os.path.join(d, x)) for x in os.listdir(d) if x[-7:] == 'snmprec'
])
recordContext['keys'] = list(recordContext['dirmap'].keys())
recordContext['bounds'] = (min(recordContext['keys']),
max(recordContext['keys']))
if 'period' in recordContext['settings']:
recordContext['settings']['period'] = float(
recordContext['settings']['period'])
else:
recordContext['settings']['period'] = 60.0
if 'wrap' in recordContext['settings']:
recordContext['settings']['wrap'] = bool(
recordContext['settings']['wrap'])
else:
recordContext['settings']['wrap'] = False
if 'control' in recordContext['settings']:
recordContext['settings']['control'] = rfc1902.ObjectName(
recordContext['settings']['control'])
log.msg(
'multiplex: using control OID %s for subtree %s, time-based multiplexing disabled'
% (recordContext['settings']['control'], oid))
recordContext['ready'] = True
if 'ready' not in recordContext:
return context['origOid'], tag, context['errorStatus']
if oid not in moduleContext:
moduleContext[oid] = {}
if context['setFlag']:
if 'control' in recordContext['settings'] and \
recordContext['settings']['control'] == context['origOid']:
fileno = int(context['origValue'])
if fileno >= len(recordContext['keys']):
log.msg('multiplex: .snmprec file number %s over limit of %s' %
(fileno, len(recordContext['keys'])))
return context['origOid'], tag, context['errorStatus']
moduleContext[oid]['fileno'] = fileno
log.msg('multiplex: switched to file #%s (%s)' %
(recordContext['keys'][fileno],
recordContext['dirmap'][recordContext['keys'][fileno]]))
return context['origOid'], tag, context['origValue']
else:
return context['origOid'], tag, context['errorStatus']
if 'control' in recordContext['settings']:
if 'fileno' not in moduleContext[oid]:
moduleContext[oid]['fileno'] = 0
if (not context['nextFlag'] and recordContext['settings']['control']
== context['origOid']):
return context['origOid'], tag, rfc1902.Integer32(
moduleContext[oid]['fileno'])
else:
timeslot = (time.time() - moduleContext['booted']) % (
recordContext['settings']['period'] * len(recordContext['dirmap']))
fileslot = int(
timeslot /
recordContext['settings']['period']) + recordContext['bounds'][0]
fileno = bisect.bisect(recordContext['keys'], fileslot) - 1
if ('fileno' not in moduleContext[oid]
or moduleContext[oid]['fileno'] < fileno
or recordContext['settings']['wrap']):
moduleContext[oid]['fileno'] = fileno
datafile = recordContext['dirmap'][recordContext['keys'][moduleContext[oid]
['fileno']]]
if ('datafile' not in moduleContext[oid]
or moduleContext[oid]['datafile'] != datafile):
if 'datafileobj' in moduleContext[oid]:
moduleContext[oid]['datafileobj'].close()
moduleContext[oid]['datafileobj'] = RecordIndex(
datafile, SnmprecRecord()).create()
moduleContext[oid]['datafile'] = datafile
log.msg('multiplex: switching to data file %s for %s' %
(datafile, context['origOid']))
text, db = moduleContext[oid]['datafileobj'].getHandles()
textOid = str(
rfc1902.OctetString('.'.join(['%s' % x for x in context['origOid']])))
try:
line = moduleContext[oid]['datafileobj'].lookup(textOid)
except KeyError:
offset = searchRecordByOid(context['origOid'], text, SnmprecRecord())
exactMatch = False
else:
offset, subtreeFlag, prevOffset = line.split(str2octs(','))
exactMatch = True
text.seek(int(offset))
line, _, _ = getRecord(text) # matched line
if context['nextFlag']:
if exactMatch:
line, _, _ = getRecord(text)
else:
if not exactMatch:
return context['origOid'], tag, context['errorStatus']
if not line:
return context['origOid'], tag, context['errorStatus']
try:
oid, value = SnmprecRecord().evaluate(line)
except error.SnmpsimError:
oid, value = context['origOid'], context['errorStatus']
return oid, tag, value
def nodeinfo(oid):
"""Translate dotted-decimal oid to a tuple with symbolic info"""
if isinstance(oid, str):
oid = rfc1902.ObjectName(oid)
return __mibViewController.getNodeLocation(
oid), __mibViewController.getNodeName(oid)
def rpc_set(self, id, var_binds):
pysnmp_var_binds = []
for object_id, value in var_binds.items():
pysnmp_var_binds.append(
(rfc1902.ObjectName(str(object_id)), self._to_pysnmp(value)))
self._conn.set(pysnmp_var_binds, (self._on_rpc_set, id))
# to an Agent at 195.218.195.228:161
# for an OID in string form
# stop whenever received OID goes out of initial prefix (it may be a table)
#
# This script performs similar to the following Net-SNMP command:
#
# $ snmpwalk -v3 -l noAuthNoPriv -u usr-none-none -ObentU 195.218.195.228:161 1.3.6.1.2.1.1
#
from twisted.internet import reactor, defer
from pysnmp.entity import engine, config
from pysnmp.entity.rfc3413.twisted import cmdgen
from pysnmp.proto import rfc1902, rfc1905
from pysnmp.carrier.twisted.dgram import udp
# Initial OID prefix
initialOID = rfc1902.ObjectName('1.3.6.1.2.1.1')
# Create SNMP engine instance
snmpEngine = engine.SnmpEngine()
#
# SNMPv3/USM setup
#
# user: usr-none-none, no auth, no priv
config.addV3User(
snmpEngine,
'usr-none-none',
)
config.addTargetParams(snmpEngine, 'my-creds', 'usr-none-none', 'noAuthNoPriv')
def _do_rpc_walk(self, id, request_object_id, object_id, res):
pysnmp_var_names = [rfc1902.ObjectName(object_id)]
self._conn.get_bulk(pysnmp_var_names,
(self._on_rpc_walk, (id, request_object_id, res)))
def resolveWithMib(self, mibViewController):
"""Perform MIB variable ID conversion.
Parameters
----------
mibViewController : :py:class:`~pysnmp.smi.view.MibViewController`
class instance representing MIB browsing functionality.
Returns
-------
: :py:class:`~pysnmp.smi.rfc1902.ObjectIdentity`
reference to itself
Raises
------
SmiError
In case of fatal MIB hanling errora
Notes
-----
Calling this method might cause the following sequence of
events (exact details depends on many factors):
* ASN.1 MIB file downloaded and handed over to
:py:class:`~pysmi.compiler.MibCompiler` for conversion into
Python MIB module (based on pysnmp classes)
* Python MIB module is imported by SNMP engine, internal indices
created
* :py:class:`~pysnmp.smi.view.MibViewController` looks up the
rest of MIB identification information based on whatever information
is already available, :py:class:`~pysnmp.smi.rfc1902.ObjectIdentity`
class instance
gets updated and ready for further use.
Examples
--------
>>> objectIdentity = ObjectIdentity('SNMPv2-MIB', 'sysDescr')
>>> objectIdentity.resolveWithMib(mibViewController)
ObjectIdentity('SNMPv2-MIB', 'sysDescr')
>>>
"""
if self.__mibSourcesToAdd is not None:
debug.logger & debug.flagMIB and debug.logger('adding MIB sources %s' % ', '.join(self.__mibSourcesToAdd))
mibViewController.mibBuilder.addMibSources(
*[ZipMibSource(x) for x in self.__mibSourcesToAdd]
)
self.__mibSourcesToAdd = None
if self.__asn1SourcesToAdd is None:
addMibCompiler(mibViewController.mibBuilder,
ifAvailable=True, ifNotAdded=True)
else:
debug.logger & debug.flagMIB and debug.logger(
'adding MIB compiler with source paths %s' % ', '.join(self.__asn1SourcesToAdd))
addMibCompiler(
mibViewController.mibBuilder,
sources=self.__asn1SourcesToAdd,
searchers=self.__asn1SourcesOptions.get('searchers'),
borrowers=self.__asn1SourcesOptions.get('borrowers'),
destination=self.__asn1SourcesOptions.get('destination'),
ifAvailable=self.__asn1SourcesOptions.get('ifAvailable'),
ifNotAdded=self.__asn1SourcesOptions.get('ifNotAdded')
)
self.__asn1SourcesToAdd = self.__asn1SourcesOptions = None
if self.__modNamesToLoad is not None:
debug.logger & debug.flagMIB and debug.logger('loading MIB modules %s' % ', '.join(self.__modNamesToLoad))
mibViewController.mibBuilder.loadModules(*self.__modNamesToLoad)
self.__modNamesToLoad = None
if self.__state & self.stClean:
return self
MibScalar, MibTableColumn = mibViewController.mibBuilder.importSymbols('SNMPv2-SMI', 'MibScalar',
'MibTableColumn')
self.__indices = ()
if isinstance(self.__args[0], ObjectIdentity):
self.__args[0].resolveWithMib(mibViewController)
if len(self.__args) == 1: # OID or label or MIB module
debug.logger & debug.flagMIB and debug.logger('resolving %s as OID or label' % self.__args)
try:
# pyasn1 ObjectIdentifier or sequence of ints or string OID
self.__oid = rfc1902.ObjectName(self.__args[0]) # OID
except PyAsn1Error:
# sequence of sub-OIDs and labels
if isinstance(self.__args[0], (list, tuple)):
prefix, label, suffix = mibViewController.getNodeName(
self.__args[0]
)
# string label
elif '.' in self.__args[0]:
prefix, label, suffix = mibViewController.getNodeNameByOid(
tuple(self.__args[0].split('.'))
)
# MIB module name
else:
modName = self.__args[0]
mibViewController.mibBuilder.loadModules(modName)
if self.__kwargs.get('last'):
prefix, label, suffix = mibViewController.getLastNodeName(modName)
else:
prefix, label, suffix = mibViewController.getFirstNodeName(modName)
if suffix:
try:
suffix = tuple([int(x) for x in suffix])
except ValueError:
raise SmiError('Unknown object name component %r' % (suffix,))
self.__oid = rfc1902.ObjectName(prefix + suffix)
else:
prefix, label, suffix = mibViewController.getNodeNameByOid(
self.__oid
)
debug.logger & debug.flagMIB and debug.logger(
'resolved %r into prefix %r and suffix %r' % (self.__args, prefix, suffix))
modName, symName, _ = mibViewController.getNodeLocation(prefix)
self.__modName = modName
self.__symName = symName
self.__label = label
mibNode, = mibViewController.mibBuilder.importSymbols(
modName, symName
)
self.__mibNode = mibNode
debug.logger & debug.flagMIB and debug.logger('resolved prefix %r into MIB node %r' % (prefix, mibNode))
if isinstance(mibNode, MibTableColumn): # table column
if suffix:
rowModName, rowSymName, _ = mibViewController.getNodeLocation(
mibNode.name[:-1]
)
rowNode, = mibViewController.mibBuilder.importSymbols(
rowModName, rowSymName
)
self.__indices = rowNode.getIndicesFromInstId(suffix)
elif isinstance(mibNode, MibScalar): # scalar
if suffix:
self.__indices = (rfc1902.ObjectName(suffix),)
else:
if suffix:
self.__indices = (rfc1902.ObjectName(suffix),)
self.__state |= self.stClean
debug.logger & debug.flagMIB and debug.logger('resolved indices are %r' % (self.__indices,))
return self
elif len(self.__args) > 1: # MIB, symbol[, index, index ...]
# MIB, symbol, index, index
if self.__args[0] and self.__args[1]:
self.__modName = self.__args[0]
self.__symName = self.__args[1]
# MIB, ''
elif self.__args[0]:
mibViewController.mibBuilder.loadModules(self.__args[0])
if self.__kwargs.get('last'):
prefix, label, suffix = mibViewController.getLastNodeName(self.__args[0])
else:
prefix, label, suffix = mibViewController.getFirstNodeName(self.__args[0])
self.__modName, self.__symName, _ = mibViewController.getNodeLocation(prefix)
# '', symbol, index, index
else:
prefix, label, suffix = mibViewController.getNodeName(self.__args[1:])
self.__modName, self.__symName, _ = mibViewController.getNodeLocation(prefix)
mibNode, = mibViewController.mibBuilder.importSymbols(
self.__modName, self.__symName
)
self.__mibNode = mibNode
self.__oid = rfc1902.ObjectName(mibNode.getName())
prefix, label, suffix = mibViewController.getNodeNameByOid(
self.__oid
)
self.__label = label
debug.logger & debug.flagMIB and debug.logger(
'resolved %r into prefix %r and suffix %r' % (self.__args, prefix, suffix))
if isinstance(mibNode, MibTableColumn): # table
rowModName, rowSymName, _ = mibViewController.getNodeLocation(
mibNode.name[:-1]
)
rowNode, = mibViewController.mibBuilder.importSymbols(
rowModName, rowSymName
)
if self.__args[2:]:
try:
instIds = rowNode.getInstIdFromIndices(*self.__args[2:])
self.__oid += instIds
self.__indices = rowNode.getIndicesFromInstId(instIds)
except PyAsn1Error:
raise SmiError('Instance index %r to OID convertion failure at object %r: %s' % (
self.__args[2:], mibNode.getLabel(), sys.exc_info()[1]))
elif self.__args[2:]: # any other kind of MIB node with indices
if self.__args[2:]:
instId = rfc1902.ObjectName(
'.'.join([str(x) for x in self.__args[2:]])
)
self.__oid += instId
self.__indices = (instId,)
self.__state |= self.stClean
debug.logger & debug.flagMIB and debug.logger('resolved indices are %r' % (self.__indices,))
return self
else:
raise SmiError('Non-OID, label or MIB symbol')
# Error/response reciever
def receiveResponse(cbCtx):
(errorIndication, errorStatus, errorIndex, varBinds) = cbCtx
if errorIndication:
print('Error: %s' % errorIndication)
reactor.stop()
return
if errorStatus:
print('Error: %s at %s' % (errorStatus.prettyPrint(), errorIndex))
reactor.stop()
return
for oid, val in varBinds:
if val is None:
print(oid.prettyPrint())
else:
print('%s = %s' % (oid.prettyPrint(), val.prettyPrint()))
reactor.stop()
df = cmdgen.SetCommandGenerator().sendReq(
snmpEngine,
'my-router',
( ((1,3,6,1,2,1,1,1,0), rfc1902.OctetString('Grinch')),
((1,3,6,1,2,1,1,2,0), rfc1902.ObjectName('1.3.6.1.4.1.20408.4')) )
)
df.addCallback(receiveResponse)
# Run I/O dispatcher which would send pending queries and process response
reactor.run()
ast = Parser().parse(
Scanner().tokenize(' '.join(sys.argv[1:]))
)
ctx = {}
# Apply configuration to SNMP entity
main.generator((snmpEngine, ctx), ast)
msgmod.generator((snmpEngine, ctx), ast)
secmod.generator((snmpEngine, ctx), ast)
mibview.generator((snmpEngine, ctx), ast)
target.generator((snmpEngine, ctx), ast)
pdu.readPduGenerator((snmpEngine, ctx), ast)
generator((snmpEngine, ctx), ast)
ctx['myHeadVars'] = [ rfc1902.ObjectName(x[0]) for x in ctx['varBinds'] ]
cmdgen.NextCommandGenerator().sendVarBinds(
snmpEngine,
ctx['addrName'],
ctx.get('contextEngineId'), ctx.get('contextName', ''),
ctx['varBinds'],
cbFun, ctx
)
snmpEngine.transportDispatcher.runDispatcher()
except KeyboardInterrupt:
sys.stderr.write('Shutting down...\n')
except error.PySnmpError:
def main():
class CommandResponder(cmdrsp.CommandResponderBase):
pduTypes = (rfc1905.SetRequestPDU.tagSet, rfc1905.GetRequestPDU.tagSet,
rfc1905.GetNextRequestPDU.tagSet,
rfc1905.GetBulkRequestPDU.tagSet)
def handleMgmtOperation(self, snmpEngine, stateReference, contextName,
pdu, acInfo):
trunkReq = gCurrentRequestContext.copy()
trunkReq['snmp-pdu'] = pdu
pluginIdList = trunkReq['plugins-list']
logCtx = LogString(trunkReq)
reqCtx = {}
for pluginNum, pluginId in enumerate(pluginIdList):
st, pdu = pluginManager.processCommandRequest(
pluginId, snmpEngine, pdu, trunkReq, reqCtx)
if st == status.BREAK:
log.debug('plugin %s inhibits other plugins' % pluginId,
ctx=logCtx)
pluginIdList = pluginIdList[:pluginNum]
break
elif st == status.DROP:
log.debug(
'received SNMP message, plugin %s muted request' %
pluginId,
ctx=logCtx)
self.releaseStateInformation(stateReference)
return
elif st == status.RESPOND:
log.debug(
'received SNMP message, plugin %s forced immediate response'
% pluginId,
ctx=logCtx)
try:
self.sendPdu(snmpEngine, stateReference, pdu)
except PySnmpError:
log.error('failure sending SNMP response', ctx=logCtx)
else:
self.releaseStateInformation(stateReference)
return
# pass query to trunk
trunkIdList = trunkReq['trunk-id-list']
if trunkIdList is None:
log.error('no route configured', ctx=logCtx)
self.releaseStateInformation(stateReference)
return
for trunkId in trunkIdList:
cbCtx = pluginIdList, trunkId, trunkReq, snmpEngine, stateReference, reqCtx
try:
msgId = trunkingManager.sendReq(trunkId, trunkReq,
self.trunkCbFun, cbCtx)
except SnmpfwdError:
log.error(
'received SNMP message, message not sent to trunk "%s"'
% sys.exc_info()[1],
ctx=logCtx)
return
log.debug(
'received SNMP message, forwarded as trunk message #%s' %
msgId,
ctx=logCtx)
def trunkCbFun(self, msgId, trunkRsp, cbCtx):
pluginIdList, trunkId, trunkReq, snmpEngine, stateReference, reqCtx = cbCtx
for key in tuple(trunkRsp):
if key != 'callflow-id':
trunkRsp['client-' + key] = trunkRsp[key]
del trunkRsp[key]
trunkRsp['callflow-id'] = trunkReq['callflow-id']
logCtx = LogString(trunkRsp)
if trunkRsp['client-error-indication']:
log.info(
'received trunk message #%s, remote end reported error-indication "%s", NOT responding'
% (msgId, trunkRsp['client-error-indication']),
ctx=logCtx)
elif 'client-snmp-pdu' not in trunkRsp:
log.info(
'received trunk message #%s, remote end does not send SNMP PDU, NOT responding'
% msgId,
ctx=logCtx)
else:
pdu = trunkRsp['client-snmp-pdu']
for pluginId in pluginIdList:
st, pdu = pluginManager.processCommandResponse(
pluginId, snmpEngine, pdu, trunkReq, reqCtx)
if st == status.BREAK:
log.debug('plugin %s inhibits other plugins' %
pluginId,
ctx=logCtx)
break
elif st == status.DROP:
log.debug('plugin %s muted response' % pluginId,
ctx=logCtx)
self.releaseStateInformation(stateReference)
return
try:
self.sendPdu(snmpEngine, stateReference, pdu)
except PySnmpError:
log.error('failure sending SNMP response', ctx=logCtx)
else:
log.debug(
'received trunk message #%s, forwarded as SNMP message'
% msgId,
ctx=logCtx)
self.releaseStateInformation(stateReference)
#
# SNMPv3 NotificationReceiver implementation
#
class NotificationReceiver(ntfrcv.NotificationReceiver):
pduTypes = (rfc1157.TrapPDU.tagSet, rfc1905.SNMPv2TrapPDU.tagSet)
def processPdu(self, snmpEngine, messageProcessingModel, securityModel,
securityName, securityLevel, contextEngineId,
contextName, pduVersion, pdu, maxSizeResponseScopedPDU,
stateReference):
trunkReq = gCurrentRequestContext.copy()
if messageProcessingModel == 0:
pdu = rfc2576.v1ToV2(pdu)
# TODO: why this is not automatic?
v2c.apiTrapPDU.setDefaults(pdu)
trunkReq['snmp-pdu'] = pdu
pluginIdList = trunkReq['plugins-list']
logCtx = LogString(trunkReq)
reqCtx = {}
for pluginNum, pluginId in enumerate(pluginIdList):
st, pdu = pluginManager.processNotificationRequest(
pluginId, snmpEngine, pdu, trunkReq, reqCtx)
if st == status.BREAK:
log.debug('plugin %s inhibits other plugins' % pluginId,
ctx=logCtx)
pluginIdList = pluginIdList[:pluginNum]
break
elif st == status.DROP:
log.debug('plugin %s muted request' % pluginId, ctx=logCtx)
return
elif st == status.RESPOND:
log.debug('plugin %s NOT forced immediate response' %
pluginId,
ctx=logCtx)
# TODO: implement immediate response for confirmed-class PDU
return
# pass query to trunk
trunkIdList = trunkReq['trunk-id-list']
if trunkIdList is None:
log.error('no route configured', ctx=logCtx)
return
for trunkId in trunkIdList:
# TODO: pass messageProcessingModel to respond
cbCtx = pluginIdList, trunkId, trunkReq, snmpEngine, stateReference, reqCtx
try:
msgId = trunkingManager.sendReq(trunkId, trunkReq,
self.trunkCbFun, cbCtx)
except SnmpfwdError:
log.error(
'received SNMP message, message not sent to trunk "%s" %s'
% (trunkId, sys.exc_info()[1]),
ctx=logCtx)
return
log.debug(
'received SNMP message, forwarded as trunk message #%s' %
msgId,
ctx=logCtx)
def trunkCbFun(self, msgId, trunkRsp, cbCtx):
pluginIdList, trunkId, trunkReq, snmpEngine, stateReference, reqCtx = cbCtx
for key in tuple(trunkRsp):
if key != 'callflow-id':
trunkRsp['client-' + key] = trunkRsp[key]
del trunkRsp[key]
trunkRsp['callflow-id'] = trunkReq['callflow-id']
logCtx = LazyLogString(trunkReq, trunkRsp)
if trunkRsp['client-error-indication']:
log.info(
'received trunk message #%s, remote end reported error-indication "%s", NOT responding'
% (msgId, trunkRsp['client-error-indication']),
ctx=logCtx)
else:
if 'client-snmp-pdu' not in trunkRsp:
log.debug(
'received trunk message #%s -- unconfirmed SNMP message'
% msgId,
ctx=logCtx)
return
pdu = trunkRsp['client-snmp-pdu']
for pluginId in pluginIdList:
st, pdu = pluginManager.processNotificationResponse(
pluginId, snmpEngine, pdu, trunkReq, reqCtx)
if st == status.BREAK:
log.debug('plugin %s inhibits other plugins' %
pluginId,
ctx=logCtx)
break
elif st == status.DROP:
log.debug(
'received trunk message #%s, plugin %s muted response'
% (msgId, pluginId),
ctx=logCtx)
return
log.debug(
'received trunk message #%s, forwarded as SNMP message' %
msgId,
ctx=logCtx)
# TODO: implement response part
# # Agent-side API complies with SMIv2
# if messageProcessingModel == 0:
# PDU = rfc2576.v2ToV1(PDU, origPdu)
#
# statusInformation = {}
#
# # 3.4.3
# try:
# snmpEngine.msgAndPduDsp.returnResponsePdu(
# snmpEngine, messageProcessingModel, securityModel,
# securityName, securityLevel, contextEngineId,
# contextName, pduVersion, rspPDU, maxSizeResponseScopedPDU,
# stateReference, statusInformation)
#
# except error.StatusInformation:
# log.error('processPdu: stateReference %s, statusInformation %s' % (stateReference, sys.exc_info()[1]))
class LogString(LazyLogString):
GROUPINGS = [
['callflow-id'],
[
'snmp-engine-id', 'snmp-transport-domain', 'snmp-bind-address',
'snmp-bind-port', 'snmp-security-model', 'snmp-security-level',
'snmp-security-name', 'snmp-credentials-id'
],
['snmp-context-engine-id', 'snmp-context-name', 'snmp-context-id'],
['snmp-pdu', 'snmp-content-id'],
['snmp-peer-address', 'snmp-peer-port', 'snmp-peer-id'],
['trunk-id'],
['client-snmp-pdu'],
]
FORMATTERS = {
'client-snmp-pdu': LazyLogString.prettyVarBinds,
'snmp-pdu': LazyLogString.prettyVarBinds,
}
def securityAuditObserver(snmpEngine, execpoint, variables, cbCtx):
securityModel = variables.get('securityModel', 0)
logMsg = 'SNMPv%s auth failure' % securityModel
logMsg += ' at %s:%s' % variables['transportAddress'].getLocalAddress()
logMsg += ' from %s:%s' % variables['transportAddress']
statusInformation = variables.get('statusInformation', {})
if securityModel in (1, 2):
logMsg += ' using snmp-community-name "%s"' % statusInformation.get(
'communityName', '?')
elif securityModel == 3:
logMsg += ' using snmp-usm-user "%s"' % statusInformation.get(
'msgUserName', '?')
try:
logMsg += ': %s' % statusInformation['errorIndication']
except KeyError:
pass
log.error(logMsg)
def requestObserver(snmpEngine, execpoint, variables, cbCtx):
trunkReq = {
'callflow-id': '%10.10x' % random.randint(0, 0xffffffffff),
'snmp-engine-id': snmpEngine.snmpEngineID,
'snmp-transport-domain': variables['transportDomain'],
'snmp-peer-address': variables['transportAddress'][0],
'snmp-peer-port': variables['transportAddress'][1],
'snmp-bind-address':
variables['transportAddress'].getLocalAddress()[0],
'snmp-bind-port':
variables['transportAddress'].getLocalAddress()[1],
'snmp-security-model': variables['securityModel'],
'snmp-security-level': variables['securityLevel'],
'snmp-security-name': variables['securityName'],
'snmp-context-engine-id': variables['contextEngineId'],
'snmp-context-name': variables['contextName'],
}
trunkReq['snmp-credentials-id'] = macro.expandMacro(
credIdMap.get(
(str(snmpEngine.snmpEngineID), variables['transportDomain'],
variables['securityModel'], variables['securityLevel'],
str(variables['securityName']))), trunkReq)
k = '#'.join([
str(x)
for x in (variables['contextEngineId'], variables['contextName'])
])
for x, y in contextIdList:
if y.match(k):
trunkReq['snmp-context-id'] = macro.expandMacro(x, trunkReq)
break
else:
trunkReq['snmp-context-id'] = None
addr = '%s:%s#%s:%s' % (
variables['transportAddress'][0], variables['transportAddress'][1],
variables['transportAddress'].getLocalAddress()[0],
variables['transportAddress'].getLocalAddress()[1])
for pat, peerId in peerIdMap.get(str(variables['transportDomain']),
()):
if pat.match(addr):
trunkReq['snmp-peer-id'] = macro.expandMacro(peerId, trunkReq)
break
else:
trunkReq['snmp-peer-id'] = None
pdu = variables['pdu']
if pdu.tagSet == v1.TrapPDU.tagSet:
pdu = rfc2576.v1ToV2(pdu)
v2c.apiTrapPDU.setDefaults(pdu)
k = '#'.join([
snmpPduTypesMap.get(variables['pdu'].tagSet, '?'),
'|'.join([str(x[0]) for x in v2c.apiTrapPDU.getVarBinds(pdu)])
])
for x, y in contentIdList:
if y.match(k):
trunkReq['snmp-content-id'] = macro.expandMacro(x, trunkReq)
break
else:
trunkReq['snmp-content-id'] = None
trunkReq['plugins-list'] = pluginIdMap.get(
(trunkReq['snmp-credentials-id'], trunkReq['snmp-context-id'],
trunkReq['snmp-peer-id'], trunkReq['snmp-content-id']), [])
trunkReq['trunk-id-list'] = trunkIdMap.get(
(trunkReq['snmp-credentials-id'], trunkReq['snmp-context-id'],
trunkReq['snmp-peer-id'], trunkReq['snmp-content-id']))
cbCtx.clear()
cbCtx.update(trunkReq)
#
# main script starts here
#
helpMessage = """\
Usage: %s [--help]
[--version ]
[--debug-snmp=<%s>]
[--debug-asn1=<%s>]
[--daemonize]
[--process-user=<uname>] [--process-group=<gname>]
[--pid-file=<file>]
[--logging-method=<%s[:args>]>]
[--log-level=<%s>]
[--config-file=<file>]""" % (sys.argv[0], '|'.join([
x for x in pysnmp_debug.flagMap.keys() if x != 'mibview'
]), '|'.join([x for x in pyasn1_debug.flagMap.keys()]), '|'.join(
log.methodsMap.keys()), '|'.join(log.levelsMap))
try:
opts, params = getopt.getopt(sys.argv[1:], 'hv', [
'help', 'version', 'debug=', 'debug-snmp=', 'debug-asn1=',
'daemonize', 'process-user='******'process-group=', 'pid-file=',
'logging-method=', 'log-level=', 'config-file='
])
except Exception:
sys.stderr.write('ERROR: %s\r\n%s\r\n' %
(sys.exc_info()[1], helpMessage))
return
if params:
sys.stderr.write('ERROR: extra arguments supplied %s\r\n%s\r\n' %
(params, helpMessage))
return
pidFile = ''
cfgFile = CONFIG_FILE
foregroundFlag = True
procUser = procGroup = None
loggingMethod = ['stderr']
loggingLevel = None
for opt in opts:
if opt[0] == '-h' or opt[0] == '--help':
sys.stderr.write("""\
Synopsis:
SNMP Proxy Forwarder: server part. Receives SNMP requests at one or many
built-in SNMP Agents and routes them to encrypted trunks established with
Forwarder's Manager part(s) running elsewhere.
Can implement complex routing logic through analyzing parts of SNMP messages
and matching them against proxying rules.
Documentation:
http://snmpfwd.sourceforge.io/
%s
""" % helpMessage)
return
if opt[0] == '-v' or opt[0] == '--version':
import snmpfwd
import pysnmp
import pyasn1
sys.stderr.write("""\
SNMP Proxy Forwarder version %s, written by Ilya Etingof <*****@*****.**>
Using foundation libraries: pysnmp %s, pyasn1 %s.
Python interpreter: %s
Software documentation and support at https://github.com/etingof/snmpfwd
%s
""" % (snmpfwd.__version__, hasattr(pysnmp, '__version__')
and pysnmp.__version__ or 'unknown',
hasattr(pyasn1, '__version__') and pyasn1.__version__
or 'unknown', sys.version, helpMessage))
return
elif opt[0] == '--debug-snmp':
pysnmp_debug.setLogger(
pysnmp_debug.Debug(*opt[1].split(','),
**dict(loggerName=PROGRAM_NAME +
'.pysnmp')))
elif opt[0] == '--debug-asn1':
pyasn1_debug.setLogger(
pyasn1_debug.Debug(*opt[1].split(','),
**dict(loggerName=PROGRAM_NAME +
'.pyasn1')))
elif opt[0] == '--daemonize':
foregroundFlag = False
elif opt[0] == '--process-user':
procUser = opt[1]
elif opt[0] == '--process-group':
procGroup = opt[1]
elif opt[0] == '--pid-file':
pidFile = opt[1]
elif opt[0] == '--logging-method':
loggingMethod = opt[1].split(':')
elif opt[0] == '--log-level':
loggingLevel = opt[1]
elif opt[0] == '--config-file':
cfgFile = opt[1]
try:
log.setLogger(PROGRAM_NAME, *loggingMethod, **dict(force=True))
if loggingLevel:
log.setLevel(loggingLevel)
except SnmpfwdError:
sys.stderr.write('%s\r\n%s\r\n' % (sys.exc_info()[1], helpMessage))
return
try:
cfgTree = cparser.Config().load(cfgFile)
except SnmpfwdError:
log.error('configuration parsing error: %s' % sys.exc_info()[1])
return
if cfgTree.getAttrValue('program-name', '', default=None) != PROGRAM_NAME:
log.error('config file %s does not match program name %s' %
(cfgFile, PROGRAM_NAME))
return
if cfgTree.getAttrValue('config-version', '',
default=None) != CONFIG_VERSION:
log.error(
'config file %s version is not compatible with program version %s'
% (cfgFile, CONFIG_VERSION))
return
random.seed()
gCurrentRequestContext = {}
credIdMap = {}
peerIdMap = {}
contextIdList = []
contentIdList = []
pluginIdMap = {}
trunkIdMap = {}
engineIdMap = {}
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRoutingCbFun(lambda td, t, d: td)
transportDispatcher.setSocketMap() # use global asyncore socket map
#
# Initialize plugin modules
#
pluginManager = PluginManager(macro.expandMacros(
cfgTree.getAttrValue('plugin-modules-path-list',
'',
default=[],
vector=True),
{'config-dir': os.path.dirname(cfgFile)}),
progId=PROGRAM_NAME,
apiVer=PLUGIN_API_VERSION)
for pluginCfgPath in cfgTree.getPathsToAttr('plugin-id'):
pluginId = cfgTree.getAttrValue('plugin-id', *pluginCfgPath)
pluginMod = cfgTree.getAttrValue('plugin-module', *pluginCfgPath)
pluginOptions = macro.expandMacros(
cfgTree.getAttrValue('plugin-options', *pluginCfgPath,
**dict(default=[], vector=True)),
{'config-dir': os.path.dirname(cfgFile)})
log.info(
'configuring plugin ID %s (at %s) from module %s with options %s...'
% (pluginId, '.'.join(pluginCfgPath), pluginMod,
', '.join(pluginOptions) or '<none>'))
try:
pluginManager.loadPlugin(pluginId, pluginMod, pluginOptions)
except SnmpfwdError:
log.error('plugin %s not loaded: %s' %
(pluginId, sys.exc_info()[1]))
return
for configEntryPath in cfgTree.getPathsToAttr('snmp-credentials-id'):
credId = cfgTree.getAttrValue('snmp-credentials-id', *configEntryPath)
configKey = []
log.info('configuring snmp-credentials %s (at %s)...' %
(credId, '.'.join(configEntryPath)))
engineId = cfgTree.getAttrValue('snmp-engine-id', *configEntryPath)
if engineId in engineIdMap:
snmpEngine, snmpContext, snmpEngineMap = engineIdMap[engineId]
log.info('using engine-id %s' %
snmpEngine.snmpEngineID.prettyPrint())
else:
snmpEngine = engine.SnmpEngine(snmpEngineID=engineId)
snmpContext = context.SnmpContext(snmpEngine)
snmpEngineMap = {'transportDomain': {}, 'securityName': {}}
snmpEngine.observer.registerObserver(
securityAuditObserver,
'rfc2576.prepareDataElements:sm-failure',
'rfc3412.prepareDataElements:sm-failure',
cbCtx=gCurrentRequestContext)
snmpEngine.observer.registerObserver(
requestObserver,
'rfc3412.receiveMessage:request',
cbCtx=gCurrentRequestContext)
CommandResponder(snmpEngine, snmpContext)
NotificationReceiver(snmpEngine, None)
engineIdMap[engineId] = snmpEngine, snmpContext, snmpEngineMap
log.info('new engine-id %s' %
snmpEngine.snmpEngineID.prettyPrint())
configKey.append(str(snmpEngine.snmpEngineID))
transportDomain = cfgTree.getAttrValue('snmp-transport-domain',
*configEntryPath)
transportDomain = rfc1902.ObjectName(transportDomain)
if transportDomain in snmpEngineMap['transportDomain']:
h, p, transportDomain = snmpEngineMap['transportDomain'][
transportDomain]
log.info('using transport endpoint %s:%s, transport ID %s' %
(h, p, transportDomain))
else:
if transportDomain[:len(udp.domainName)] == udp.domainName:
transport = udp.UdpTransport()
elif transportDomain[:len(udp6.domainName)] == udp6.domainName:
transport = udp6.Udp6Transport()
else:
log.error('unknown transport domain %s' % (transportDomain, ))
return
h, p = cfgTree.getAttrValue('snmp-bind-address',
*configEntryPath).split(':', 1)
snmpEngine.registerTransportDispatcher(transportDispatcher,
transportDomain)
transportOptions = cfgTree.getAttrValue(
'snmp-transport-options', *configEntryPath,
**dict(default=[], vector=True))
t = transport.openServerMode((h, int(p)))
if 'transparent-proxy' in transportOptions:
t.enablePktInfo()
t.enableTransparent()
elif 'virtual-interface' in transportOptions:
t.enablePktInfo()
config.addSocketTransport(snmpEngine, transportDomain, t)
snmpEngineMap['transportDomain'][
transportDomain] = h, p, transportDomain
log.info(
'new transport endpoint %s:%s, options %s, transport ID %s' %
(h, p, transportOptions and '/'.join(transportOptions)
or '<none>', transportDomain))
configKey.append(transportDomain)
securityModel = cfgTree.getAttrValue('snmp-security-model',
*configEntryPath)
securityModel = rfc1902.Integer(securityModel)
securityLevel = cfgTree.getAttrValue('snmp-security-level',
*configEntryPath)
securityLevel = rfc1902.Integer(securityLevel)
securityName = cfgTree.getAttrValue('snmp-security-name',
*configEntryPath)
if securityModel in (1, 2):
if securityName in snmpEngineMap['securityName']:
if snmpEngineMap['securityName'][
securityModel] == securityModel:
log.info('using security-name %s' % securityName)
else:
raise SnmpfwdError(
'snmp-security-name %s already in use at snmp-security-model %s'
% (securityName, securityModel))
else:
communityName = cfgTree.getAttrValue('snmp-community-name',
*configEntryPath)
config.addV1System(snmpEngine,
securityName,
communityName,
securityName=securityName)
log.info(
'new community-name %s, security-model %s, security-name %s, security-level %s'
% (communityName, securityModel, securityName,
securityLevel))
snmpEngineMap['securityName'][securityName] = securityModel
configKey.append(securityModel)
configKey.append(securityLevel)
configKey.append(securityName)
elif securityModel == 3:
if securityName in snmpEngineMap['securityName']:
log.info('using USM security-name: %s' % securityName)
else:
usmUser = cfgTree.getAttrValue('snmp-usm-user',
*configEntryPath)
log.info(
'new USM user %s, security-model %s, security-level %s, security-name %s'
% (usmUser, securityModel, securityLevel, securityName))
if securityLevel in (2, 3):
usmAuthProto = cfgTree.getAttrValue(
'snmp-usm-auth-protocol', *configEntryPath,
**dict(default=config.usmHMACMD5AuthProtocol))
usmAuthProto = rfc1902.ObjectName(usmAuthProto)
usmAuthKey = cfgTree.getAttrValue('snmp-usm-auth-key',
*configEntryPath)
log.info(
'new USM authentication key: %s, authentication protocol: %s'
% (usmAuthKey, usmAuthProto))
if securityLevel == 3:
usmPrivProto = cfgTree.getAttrValue(
'snmp-usm-priv-protocol', *configEntryPath,
**dict(default=config.usmDESPrivProtocol))
usmPrivProto = rfc1902.ObjectName(usmPrivProto)
usmPrivKey = cfgTree.getAttrValue(
'snmp-usm-priv-key', *configEntryPath,
**dict(default=None))
log.info(
'new USM encryption key: %s, encryption protocol: %s'
% (usmPrivKey, usmPrivProto))
config.addV3User(snmpEngine, usmUser, usmAuthProto,
usmAuthKey, usmPrivProto, usmPrivKey)
else:
config.addV3User(snmpEngine, usmUser, usmAuthProto,
usmAuthKey)
else:
config.addV3User(snmpEngine, usmUser)
snmpEngineMap['securityName'][securityName] = securityModel
configKey.append(securityModel)
configKey.append(securityLevel)
configKey.append(securityName)
else:
raise SnmpfwdError('unknown snmp-security-model: %s' %
securityModel)
configKey = tuple(configKey)
if configKey in credIdMap:
log.error(
'ambiguous configuration for key snmp-credentials-id=%s at %s'
% (credId, '.'.join(configEntryPath)))
return
credIdMap[configKey] = credId
duplicates = {}
for peerCfgPath in cfgTree.getPathsToAttr('snmp-peer-id'):
peerId = cfgTree.getAttrValue('snmp-peer-id', *peerCfgPath)
if peerId in duplicates:
log.error(
'duplicate snmp-peer-id=%s at %s and %s' %
(peerId, '.'.join(peerCfgPath), '.'.join(duplicates[peerId])))
return
duplicates[peerId] = peerCfgPath
log.info('configuring peer ID %s (at %s)...' %
(peerId, '.'.join(peerCfgPath)))
transportDomain = cfgTree.getAttrValue('snmp-transport-domain',
*peerCfgPath)
if transportDomain not in peerIdMap:
peerIdMap[transportDomain] = []
for peerAddress in cfgTree.getAttrValue(
'snmp-peer-address-pattern-list', *peerCfgPath,
**dict(vector=True)):
for bindAddress in cfgTree.getAttrValue(
'snmp-bind-address-pattern-list', *peerCfgPath,
**dict(vector=True)):
peerIdMap[transportDomain].append(
(re.compile(peerAddress + '#' + bindAddress), peerId))
duplicates = {}
for contextCfgPath in cfgTree.getPathsToAttr('snmp-context-id'):
contextId = cfgTree.getAttrValue('snmp-context-id', *contextCfgPath)
if contextId in duplicates:
log.error('duplicate snmp-context-id=%s at %s and %s' %
(contextId, '.'.join(contextCfgPath), '.'.join(
duplicates[contextId])))
return
duplicates[contextId] = contextCfgPath
k = '#'.join((cfgTree.getAttrValue('snmp-context-engine-id-pattern',
*contextCfgPath),
cfgTree.getAttrValue('snmp-context-name-pattern',
*contextCfgPath)))
log.info('configuring context ID %s (at %s), composite key: %s' %
(contextId, '.'.join(contextCfgPath), k))
contextIdList.append((contextId, re.compile(k)))
duplicates = {}
for contentCfgPath in cfgTree.getPathsToAttr('snmp-content-id'):
contentId = cfgTree.getAttrValue('snmp-content-id', *contentCfgPath)
if contentId in duplicates:
log.error('duplicate snmp-content-id=%s at %s and %s' %
(contentId, '.'.join(contentCfgPath), '.'.join(
duplicates[contentId])))
return
duplicates[contentId] = contentCfgPath
for x in cfgTree.getAttrValue('snmp-pdu-oid-prefix-pattern-list',
*contentCfgPath, **dict(vector=True)):
k = '#'.join([
cfgTree.getAttrValue('snmp-pdu-type-pattern', *contentCfgPath),
x
])
log.info('configuring content ID %s (at %s), composite key: %s' %
(contentId, '.'.join(contentCfgPath), k))
contentIdList.append((contentId, re.compile(k)))
del duplicates
for pluginCfgPath in cfgTree.getPathsToAttr('using-plugin-id-list'):
pluginIdList = cfgTree.getAttrValue('using-plugin-id-list',
*pluginCfgPath,
**dict(vector=True))
log.info('configuring plugin ID(s) %s (at %s)...' %
(','.join(pluginIdList), '.'.join(pluginCfgPath)))
for credId in cfgTree.getAttrValue('matching-snmp-credentials-id-list',
*pluginCfgPath,
**dict(vector=True)):
for peerId in cfgTree.getAttrValue('matching-snmp-peer-id-list',
*pluginCfgPath,
**dict(vector=True)):
for contextId in cfgTree.getAttrValue(
'matching-snmp-context-id-list', *pluginCfgPath,
**dict(vector=True)):
for contentId in cfgTree.getAttrValue(
'matching-snmp-content-id-list', *pluginCfgPath,
**dict(vector=True)):
k = credId, contextId, peerId, contentId
if k in pluginIdMap:
log.error(
'duplicate snmp-credentials-id %s, snmp-context-id %s, snmp-peer-id %s, snmp-content-id %s at plugin-id(s) %s'
% (credId, contextId, peerId, contentId,
','.join(pluginIdList)))
return
else:
log.info(
'configuring plugin(s) %s (at %s), composite key: %s'
% (','.join(pluginIdList),
'.'.join(pluginCfgPath), '/'.join(k)))
for pluginId in pluginIdList:
if not pluginManager.hasPlugin(pluginId):
log.error(
'undefined plugin ID %s referenced at %s'
% (pluginId, '.'.join(pluginCfgPath)))
return
pluginIdMap[k] = pluginIdList
for routeCfgPath in cfgTree.getPathsToAttr('using-trunk-id-list'):
trunkIdList = cfgTree.getAttrValue('using-trunk-id-list',
*routeCfgPath, **dict(vector=True))
log.info('configuring destination trunk ID(s) %s (at %s)...' %
(','.join(trunkIdList), '.'.join(routeCfgPath)))
for credId in cfgTree.getAttrValue('matching-snmp-credentials-id-list',
*routeCfgPath, **dict(vector=True)):
for peerId in cfgTree.getAttrValue('matching-snmp-peer-id-list',
*routeCfgPath,
**dict(vector=True)):
for contextId in cfgTree.getAttrValue(
'matching-snmp-context-id-list', *routeCfgPath,
**dict(vector=True)):
for contentId in cfgTree.getAttrValue(
'matching-snmp-content-id-list', *routeCfgPath,
**dict(vector=True)):
k = credId, contextId, peerId, contentId
if k in trunkIdMap:
log.error(
'duplicate snmp-credentials-id %s, snmp-context-id %s, snmp-peer-id %s, snmp-content-id %s at trunk-id(s) %s'
% (credId, contextId, peerId, contentId,
','.join(trunkIdList)))
return
else:
trunkIdMap[k] = trunkIdList
log.info(
'configuring trunk routing to %s (at %s), composite key: %s'
% (','.join(trunkIdList), '.'.join(routeCfgPath),
'/'.join(k)))
def dataCbFun(trunkId, msgId, msg):
log.debug('message ID %s received from trunk %s' % (msgId, trunkId))
trunkingManager = TrunkingManager(dataCbFun)
def getTrunkAddr(a, port=0):
f = lambda h, p=port: (h, int(p))
try:
return f(*a.split(':'))
except Exception:
raise SnmpfwdError('improper IPv4 endpoint %s' % a)
for trunkCfgPath in cfgTree.getPathsToAttr('trunk-id'):
trunkId = cfgTree.getAttrValue('trunk-id', *trunkCfgPath)
secret = cfgTree.getAttrValue('trunk-crypto-key', *trunkCfgPath,
**dict(default=''))
secret = secret and (secret * ((16 // len(secret)) + 1))[:16]
log.info('configuring trunk ID %s (at %s)...' %
(trunkId, '.'.join(trunkCfgPath)))
connectionMode = cfgTree.getAttrValue('trunk-connection-mode',
*trunkCfgPath)
if connectionMode == 'client':
trunkingManager.addClient(
trunkId,
getTrunkAddr(
cfgTree.getAttrValue('trunk-bind-address', *trunkCfgPath)),
getTrunkAddr(
cfgTree.getAttrValue('trunk-peer-address', *trunkCfgPath),
30201),
cfgTree.getAttrValue('trunk-ping-period',
*trunkCfgPath,
default=0,
expect=int), secret)
log.info(
'new trunking client from %s to %s' %
(cfgTree.getAttrValue('trunk-bind-address', *trunkCfgPath),
cfgTree.getAttrValue('trunk-peer-address', *trunkCfgPath)))
if connectionMode == 'server':
trunkingManager.addServer(
getTrunkAddr(
cfgTree.getAttrValue('trunk-bind-address', *trunkCfgPath),
30201),
cfgTree.getAttrValue('trunk-ping-period',
*trunkCfgPath,
default=0,
expect=int), secret)
log.info(
'new trunking server at %s' %
(cfgTree.getAttrValue('trunk-bind-address', *trunkCfgPath)))
transportDispatcher.registerTimerCbFun(trunkingManager.setupTrunks,
random.randrange(1, 5))
transportDispatcher.registerTimerCbFun(trunkingManager.monitorTrunks,
random.randrange(1, 5))
try:
daemon.dropPrivileges(procUser, procGroup)
except Exception:
log.error('can not drop privileges: %s' % sys.exc_info()[1])
return
if not foregroundFlag:
try:
daemon.daemonize(pidFile)
except Exception:
log.error('can not daemonize process: %s' % sys.exc_info()[1])
return
# Run mainloop
log.info('starting I/O engine...')
transportDispatcher.jobStarted(1) # server job would never finish
# Python 2.4 does not support the "finally" clause
while True:
try:
transportDispatcher.runDispatcher()
except (PySnmpError, SnmpfwdError, socket.error):
log.error(str(sys.exc_info()[1]))
continue
except Exception:
transportDispatcher.closeDispatcher()
raise
