1#!/usr/bin/python
2#
3# Generate SNMPGET request, parse response
4#
5from pyasn1.codec.ber import encoder, decoder
6from pyasn1_modules import rfc1157
7import sys, socket
8
9if len(sys.argv) != 4:
10    print("""Usage:
11$ %s <community> <host> <OID>""" % sys.argv[0])
12    sys.exit(-1)
13
14msg = rfc1157.Message()
15msg.setComponentByPosition(0)
16msg.setComponentByPosition(1, sys.argv[1])
17# pdu
18pdus = msg.setComponentByPosition(2).getComponentByPosition(2)
19pdu = pdus.setComponentByPosition(0).getComponentByPosition(0)
20pdu.setComponentByPosition(0, 123)
21pdu.setComponentByPosition(1, 0)
22pdu.setComponentByPosition(2, 0)
23vbl = pdu.setComponentByPosition(3).getComponentByPosition(3)
24vb = vbl.setComponentByPosition(0).getComponentByPosition(0)
25vb.setComponentByPosition(0, sys.argv[3])
26v = vb.setComponentByPosition(1).getComponentByPosition(1).setComponentByPosition(0).getComponentByPosition(0).setComponentByPosition(3).getComponentByPosition(3)
27
28print('sending: %s' % msg.prettyPrint())
29
30sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
31sock.sendto(encoder.encode(msg), (sys.argv[2], 161))
32
33substrate, _ = sock.recvfrom(2048)
34
35rMsg, _ = decoder.decode(substrate, asn1Spec=msg)
36
37print('received: %s' % rMsg.prettyPrint())
38