> In my sub-agent I will have a few INTEGER variables (not a table, plain
> INTERGERs) that will be GET/SET. For the moment I'm thinking about using
> netsnmp_register_int_instance() with the default integer handler.
Are these scalar MIB objects? Or individual instances (e.g. as part of
a wider table).
If they're scalar objects, then can I suggest that you consider using
'netsnmp_register_scalar()' or 'netsnmp_register_watched_scalar()'
instead. That would handle such objects rather better - in that it
would respond correctly to invalid requests as well as valid ones.
(i.e. requests for 'myObject' or 'myObject.1')
> The problem is that every INTEGER variable has a value range that must
> be checked before a SET. Does net-snmp check for the validity of INTEGER
> ranges before setting it's value?
The toolkit helpers don't, no - but you could supply your own helper
routine that could perform these checks. That would typically be the
only thing you'd need to do - the helpers would do all the rest of the
work.
So the full code for a watched writable scalar helper would be:
int
handle_myObject( .... )
{
netsnmp_request_info *request;
switch (reqinfo->mode) {
case MODE_RESERVE1:
for (request=requests; request; request=request->next) {
if ( is_not_valid( *request->requestvb->val.integer )) {
netsnmp_set_request_error( reqinfo, request,
SNMP_ERR_WRONGVALUE );
return SNMP_ERR_WRONGVALUE;
}
}
break;
}
return SNMP_ERR_NOERROR;
}
That's the appropriate way to do this - putting your helper "above" the
instance handler in the chain isn't really sensible.
Dave
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