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#!/usr/bin/env python
#
# This file is part of pysnmp-apps software.
#
# Copyright (c) 2005-2016, Ilya Etingof <ilya@glas.net>
# License: http://pysnmp.sf.net/license.html
#
# Notificaton Originator
#
import sys, socket, time, traceback
from pysnmp_apps.cli import main, msgmod, secmod, target, pdu, mibview, base
from pysnmp.entity import engine, config
from pysnmp.entity.rfc3413 import ntforg
from pysnmp.proto.proxy import rfc2576
from pysnmp.proto.api import v1, v2c
from pysnmp import error
def getUsage():
return "Usage: %s [OPTIONS] <MANAGER> <PARAMETERS>\n\
%s%s%s%s\
TRAP options:\n\
-C<TRAPOPT>: set various application specific behaviours:\n\
i: send INFORM-PDU, expect a response\n\
%s\
SNMPv1 TRAP management parameters:\n\
enterprise-oid agent generic-trap specific-trap uptime <management-params>\n\
where:\n\
generic-trap: coldStart|warmStart|linkDown|linkUp|authenticationFailure|egpNeighborLoss|enterpriseSpecific\n\
SNMPv2/SNMPv3 management parameters:\n\
uptime trap-oid <management-params>\n\
%s" % (sys.argv[0],
main.getUsage(),
msgmod.getUsage(),
secmod.getUsage(),
mibview.getUsage(),
target.getUsage(),
pdu.getWriteUsage())
# Construct c/l interpreter for this app
class Scanner(msgmod.MPScannerMixIn,
secmod.SMScannerMixIn,
mibview.MibViewScannerMixIn,
target.TargetScannerMixIn,
pdu.ReadPduScannerMixIn,
main.MainScannerMixIn,
base.ScannerTemplate):
def t_appopts(self, s):
r' -C '
self.rv.append(base.ConfigToken('appopts'))
def t_genericTrap(self, s):
r' coldStart|warmStart|linkDown|linkUp|authenticationFailure|egpNeighborLoss|enterpriseSpecific '
self.rv.append(base.ConfigToken('genericTrap', s))
class Parser(msgmod.MPParserMixIn,
secmod.SMParserMixIn,
mibview.MibViewParserMixIn,
target.TargetParserMixIn,
pdu.WritePduParserMixIn,
main.MainParserMixIn,
base.ParserTemplate):
def p_trapParams(self, args):
'''
TrapV1Params ::= EnterpriseOid whitespace AgentName whitespace GenericTrap whitespace SpecificTrap whitespace Uptime whitespace VarBinds
EnterpriseOid ::= string
AgentName ::= string
GenericTrap ::= genericTrap
SpecificTrap ::= string
Uptime ::= string
TrapV2cParams ::= Uptime whitespace TrapOid whitespace VarBinds
TrapOid ::= string
'''
def p_paramsSpec(self, args):
'''
Params ::= TrapV1Params
Params ::= TrapV2cParams
'''
def p_appOptions(self, args):
'''
Option ::= ApplicationOption
ApplicationOption ::= appopts whitespace string
ApplicationOption ::= appopts string
'''
class __Generator(base.GeneratorTemplate):
def n_ApplicationOption(self, cbCtx, node):
snmpEngine, ctx = cbCtx
if len(node) > 2:
opt = node[2].attr
else:
opt = node[1].attr
for c in opt:
if c == 'i':
ctx['informMode'] = 1
else:
raise error.PySnmpError('bad -C option - "%s"' % c)
def n_EnterpriseOid(self, cbCtx, node):
snmpEngine, ctx= cbCtx
ctx['EnterpriseOid'] = node[0].attr
def n_AgentName(self, cbCtx, node):
snmpEngine, ctx = cbCtx
try:
ctx['AgentName'] = socket.gethostbyname(node[0].attr)
except socket.error:
raise error.PySnmpError(
'Bad agent name %s: %s' % (node[0].attr, sys.exc_info()[1])
)
def n_GenericTrap(self, cbCtx, node):
snmpEngine, ctx = cbCtx
ctx['GenericTrap'] = node[0].attr
def n_SpecificTrap(self, cbCtx, node):
snmpEngine, ctx = cbCtx
ctx['SpecificTrap'] = node[0].attr
def n_Uptime(self, cbCtx, node):
snmpEngine, ctx = cbCtx
ctx['Uptime'] = int(node[0].attr)
def n_TrapOid(self, cbCtx, node):
snmpEngine, ctx = cbCtx
ctx['TrapOid'] = node[0].attr
def n_TrapV1Params_exit(self, cbCtx, node):
snmpEngine, ctx = cbCtx
# Initialize v1 PDU with passed params, then proxy it into v2c PDU
v1Pdu = v1.TrapPDU()
v1.apiTrapPDU.setDefaults(v1Pdu)
if 'EnterpriseOid' in ctx:
v1.apiTrapPDU.setEnterprise(v1Pdu, ctx['EnterpriseOid'])
if 'AgentName' in ctx:
v1.apiTrapPDU.setAgentAddr(v1Pdu, ctx['AgentName'])
if 'GenericTrap' in ctx:
v1.apiTrapPDU.setGenericTrap(v1Pdu, ctx['GenericTrap'])
if 'SpecificTrap' in ctx:
v1.apiTrapPDU.setSpecificTrap(v1Pdu, ctx['SpecificTrap'])
if 'Uptime' in ctx:
v1.apiTrapPDU.setTimeStamp(v1Pdu, ctx['Uptime'])
ctx['pdu'] = rfc2576.v1ToV2(v1Pdu)
def n_TrapV2cParams_exit(self, cbCtx, node):
snmpEngine, ctx = cbCtx
if 'informMode' in ctx:
pdu = v2c.InformRequestPDU()
v2c.apiPDU.setDefaults(pdu)
else:
pdu = v2c.TrapPDU()
v2c.apiTrapPDU.setDefaults(pdu)
v2c.apiPDU.setVarBinds(
pdu,
[ ( v2c.ObjectIdentifier('1.3.6.1.2.1.1.3.0'), v2c.TimeTicks(ctx['Uptime'])),
( v2c.ObjectIdentifier('1.3.6.1.6.3.1.1.4.1.0'), v2c.ObjectIdentifier(ctx['TrapOid']) ) ]
)
ctx['pdu'] = pdu
def generator(cbCtx, ast):
snmpEngine, ctx = cbCtx
return __Generator().preorder((snmpEngine, ctx), ast)
# Run SNMP engine
def cbFun(snmpEngine, notificationHandle, errorIndication, pdu, cbCtx):
if errorIndication:
sys.stderr.write('%s\n' % errorIndication)
return
errorStatus = v2c.apiPDU.getErrorStatus(pdu)
if errorStatus:
errorIndex = v2c.apiPDU.getErrorIndex(pdu)
sys.stderr.write(
'%s at %s\n' %
( errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex)-1] or '?' )
)
return
for oid, val in v2c.apiPDU.getVarBinds(pdu):
sys.stdout.write('%s\n' % cbCtx['mibViewProxy'].getPrettyOidVal(
cbCtx['mibViewController'], oid, val
)
)
snmpEngine = engine.SnmpEngine()
try:
# Parse c/l into AST
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.generatorTrap((snmpEngine, ctx), ast)
pdu.writePduGenerator((snmpEngine, ctx), ast)
generator((snmpEngine, ctx), ast)
v2c.apiPDU.setVarBinds(
ctx['pdu'], v2c.apiPDU.getVarBinds(ctx['pdu']) + ctx['varBinds']
)
ntforg.NotificationOriginator().sendPdu(
snmpEngine,
ctx['addrName'],
ctx.get('contextEngineId'),
ctx.get('contextName', ''),
ctx['pdu'],
cbFun, ctx
)
snmpEngine.transportDispatcher.runDispatcher()
except KeyboardInterrupt:
sys.stderr.write('Shutting down...\n')
except error.PySnmpError:
sys.stderr.write('Error: %s\n%s' % (sys.exc_info()[1], getUsage()))
sys.exit(-1)
except Exception:
sys.stderr.write('Process terminated: %s\n' % sys.exc_info()[1])
for line in traceback.format_exception(*sys.exc_info()):
sys.stderr.write(line.replace('\n', ';'))
sys.exit(-1)
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