1 files changed, 77 insertions, 0 deletions
diff --git a/examples/v3arch/asyncore/agent/cmdrsp/v3-alternative-mib-controller.py b/examples/v3arch/asyncore/agent/cmdrsp/v3-alternative-mib-controller.py
new file mode 100644
index 0000000..1711133
--- /dev/null
+++ b/examples/v3arch/asyncore/agent/cmdrsp/v3-alternative-mib-controller.py
@@ -0,0 +1,77 @@
+"""
+Custom MIB Controller
++++++++++++++++++++++
+
+Listen and respond to SNMP GET/SET/GETNEXT/GETBULK queries with
+the following options:
+
+* SNMPv3
+* with USM username usr-none-none
+* using alternative set of Managed Objects addressed by 
+  contextName: my-context
+* allow access to SNMPv2-MIB objects (1.3.6.1.2.1)
+* over IPv4/UDP, listening at 127.0.0.1:161
+
+The following Net-SNMP command will send GET request to this Agent:
+
+| $ snmpget -v3 -u usr-none-none -l noAuthNoPriv -n my-context -Ir 127.0.0.1 sysDescr.0
+
+"""#
+from pysnmp.entity import engine, config
+from pysnmp.entity.rfc3413 import cmdrsp, context
+from pysnmp.carrier.asyncore.dgram import udp
+from pysnmp.smi import instrum
+from pysnmp.proto.api import v2c
+
+# Create SNMP engine
+snmpEngine = engine.SnmpEngine()
+
+# Transport setup
+
+# UDP over IPv4
+config.addTransport(
+    snmpEngine,
+    udp.domainName,
+    udp.UdpTransport().openServerMode(('127.0.0.1', 161))
+)
+
+# SNMPv3/USM setup
+
+# user: usr-none-none, auth: NONE, priv NONE
+config.addV3User(
+    snmpEngine, 'usr-none-none'
+)
+
+# Allow full MIB access for each user at VACM
+config.addVacmUser(snmpEngine, 3, 'usr-none-none', 'noAuthNoPriv', (1,3,6,1,2,1), (1,3,6,1,2,1)) 
+
+# Create an SNMP context
+snmpContext = context.SnmpContext(snmpEngine)
+
+# Very basic Management Instrumentation Controller without
+# any Managed Objects attached. It supports only GET's and
+# always echos request var-binds in response.
+class EchoMibInstrumController(instrum.AbstractMibInstrumController):
+    def readVars(self, vars, acInfo=(None, None)):
+        return [ (ov[0], v2c.OctetString('You queried OID %s' % ov[0])) for ov in vars]
+
+# Create a custom Management Instrumentation Controller and register at
+# SNMP Context under ContextName 'my-context'
+snmpContext.registerContextName(
+    v2c.OctetString('my-context'),          # Context Name
+    EchoMibInstrumController()              # Management Instrumentation
+)
+
+# Register GET&SET Applications at the SNMP engine for a custom SNMP context
+cmdrsp.GetCommandResponder(snmpEngine, snmpContext)
+cmdrsp.SetCommandResponder(snmpEngine, snmpContext)
+
+# Register an imaginary never-ending job to keep I/O dispatcher running forever
+snmpEngine.transportDispatcher.jobStarted(1)
+
+# Run I/O dispatcher which would receive queries and send responses
+try:
+    snmpEngine.transportDispatcher.runDispatcher()
+except:
+    snmpEngine.transportDispatcher.closeDispatcher()
+    raise