how to inject global handler that handles request to any OID?

How can I do the following?

1. create a handler registration for the top OID of:
const oid top_oid[] = { 1 };
const size_t top_oid_len = OID_LENGTH(top_oid);

2. inject the handler such that any GET, SET, GETBULK (any USM authenticated access at all) of any node under the subtree of the top OID will call a function I specify

3. the handler function will have access to a value in memory that represents the IP address of the SNMP manager that is calling this SNMP agent as multiple managers/browsers will be accessing the device, and a decision must be made based on IP address

My goal is:
- trigger a timeout condition whenever a particular IP address does not authenticate and perform a GET, SET, or GETBULK within the past X number of seconds, where X is a compile-time constant; and do this for several know IP addresses

The goal cannot be changed. It is a requirement, but the approach can be changed.
I would prefer to not modify NET-SNMP itself; but I can if it is necessary.
The version of NET-SNMP I am using is: 5.7.1 LTS.

Thank you for any assistance.

Timothy


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