Hi ,
I want to get value which is requested by set in following net-snmp example,
how do i do that? please help me :(
my code is as follows file: nstAgentSubagentObject.c
-----------------------------------------------------------------------------------------------------
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "nstAgentSubagentObject.h"
#include <stdlib.h>
/** Initializes the nstAgentSubagentObject module */
void
init_nstAgentSubagentObject(void)
{
static oid nstAgentSubagentObject_oid[] = { 1,3,6,1,4,1,8072,2,4,1,1,2
};
DEBUGMSGTL(("nstAgentSubagentObject", "Initializing\n"));
netsnmp_register_scalar(
netsnmp_create_handler_registration("nstAgentSubagentObject",
handle_nstAgentSubagentObject,
nstAgentSubagentObject_oid,
OID_LENGTH(nstAgentSubagentObject_oid),
HANDLER_CAN_RWRITE
));
}
int
handle_nstAgentSubagentObject(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
int ret;
/* We are never called for a GETNEXT if it's registered as a
"instance", as it's "magically" handled for us. */
/* a instance handler also only hands us one request at a time, so
we don't need to loop over a list of requests; we'll only get one. */
long* VALUE;
VALUE = (long*)malloc(sizeof(long));
switch(reqinfo->mode) {
case MODE_GET:
snmp_set_var_typed_value(requests->requestvb, ASN_INTEGER,
(u_char *) /* XXX: a pointer to the
scalar's data */,
sizeof(long) /* XXX: the length of the
data in bytes */);
break;
/*
* SET REQUEST
*
* multiple states in the transaction. See:
*
http://www.net-snmp.org/tutorial-5/toolkit/mib_module/set-actions.jpg
*/
case MODE_SET_RESERVE1:
/* or you could use netsnmp_check_vb_type_and_size instead
*/
ret = netsnmp_check_vb_type(requests->requestvb, ASN_INTEGER);
if ( ret != SNMP_ERR_NOERROR ) {
netsnmp_set_request_error(reqinfo, requests, ret );
}
break;
case MODE_SET_RESERVE2:
/* XXX malloc "undo" storage buffer */
if (0/* XXX if malloc, or whatever, failed: */) {
netsnmp_set_request_error(reqinfo, requests,
SNMP_ERR_RESOURCEUNAVAILABLE);
}
break;
case MODE_SET_FREE:
/* XXX: free resources allocated in RESERVE1 and/or
RESERVE2. Something failed somewhere, and the states
below won't be called. */
break;
case MODE_SET_ACTION:
/* XXX: perform the value change here */
HOW TO GET VALUE HERE?
( where do i find value requested by set?)
if (0/* XXX: error? */) {
netsnmp_set_request_error(reqinfo, requests,0 /* some error
*/);
}
break;
case MODE_SET_COMMIT:
/* XXX: delete temporary storage */
if (0/* XXX: error? */) {
/* try _really_really_ hard to never get to this point */
netsnmp_set_request_error(reqinfo, requests,
SNMP_ERR_COMMITFAILED);
}
break;
case MODE_SET_UNDO:
/* XXX: UNDO and return to previous value for the object */
if (0/* XXX: error? */) {
/* try _really_really_ hard to never get to this point */
netsnmp_set_request_error(reqinfo, requests,
SNMP_ERR_UNDOFAILED);
}
break;
default:
/* we should never get here, so this is a really bad error */
snmp_log(LOG_ERR, "unknown mode (%d) in
handle_nstAgentSubagentObject\n", reqinfo->mode );
return SNMP_ERR_GENERR;
}
return SNMP_ERR_NOERROR;
}
---------------------------------------------------------------------------------------------------------------
Thanks in advance !!!!!
mas
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