> What do I need to do to make net-snmp happy with the data that I get from
> the pipe? Will I need to make dummy variables, and register those with
> net-snmp? Just use the variables like in the switch statements that follow
> this comment in example.c? Or quit looking at example.c all together? :)
Quit looking at example.c altogether. <seriously!>
If nothing else, this example uses the old v4 API.
Although this *can* support a "register subtree" approach,
it's a bit of hack, and it's really aimed at working with
a list of known variables.
From what you've said so far, you'd be much better off
using the new v5 API.
You can use 'netsnmp_register_handler' in the initialisation
routine to register the whole of your subtree as being handled
by your handler routine. Something like:
netsnmp_handler_registration *reg =
netsnmp_create_handler_registration(
"mySubtree", handle_mysubtree,
mySubtree_oid, OID_LENGTH( mySubtree_oid ),
HANDLER_CAN_RWRITE);
netsnmp_register_handler( reg );
Then the handler can extract each requested OID, send it down
the pipe, receive the result, and then pass it back to the
main agent using
snmp_set_var_objid(request->requestvb,
result_oid, result_oid_len);
snmp_set_var_typed_value(request->requestvb,
ASN_TYPE, &result, sizeof(result));
(That skips over a lot of details, but you should get the idea...)
Question:
Does the other end of the pipe cope with the GETNEXT lexical
ordering? Or does it assume that everything is a GET?
How does it handle SET requests.
Dave
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