It does not work by putting & in front of datapointer. It is already a void
pointer. Trying with & in front of datapointer outputs wrong. For scalar
testCounter it gives 1780230716 instead of 1234.
I have modified my code which now works. This version I have registered all 3
scalars.
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "test.h"
const oid test_oid[] = { 1,3,6,1,4,1,40463,1 };
const oid testInfo_oid[] = { 1,3,6,1,4,1,40463,1,1 };
const oid testPlacementCountry_oid[] = { 1,3,6,1,4,1,40463,1,2 };
const oid testCounter_oid[] = { 1,3,6,1,4,1,40463,1,3 };
/** Initializes the test module */
void init_test(void) {
DEBUGMSGTL(("test", "Initializing\n"));
netsnmp_register_scalar(
netsnmp_create_handler_registration("testInfo",
handle_test,
testInfo_oid,
OID_LENGTH(testInfo_oid),
HANDLER_CAN_RONLY
));
netsnmp_register_scalar(
netsnmp_create_handler_registration("testPlacementCountry",
handle_test,
testPlacementCountry_oid,
OID_LENGTH(testPlacementCountry_oid),
HANDLER_CAN_RONLY
));
netsnmp_register_scalar(
netsnmp_create_handler_registration("testCounter",
handle_test,
testCounter_oid,
OID_LENGTH(testCounter_oid),
HANDLER_CAN_RONLY
));
}
int handle_test(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests) {
void* datapointer;
char buffer[200];
int dataint;
int length = 0;
u_char type;
const oid* request_rootoid = (*reginfo).rootoid;
if (netsnmp_oid_equals(request_ rootoid , 9, testInfo_oid, 9) == 0) { //Why not
OID_LENGTH(testInfo_oid)
strcpy(buffer, "test");
datapointer = buffer;
length = strlen(buffer);
type = ASN_OCTET_STR;
} else if (netsnmp_oid_equals(request_ rootoid , 9, testPlacementCountry_oid,
9) == 0) {
strcpy(buffer, "test2");
datapointer = buffer;
length = strlen(buffer);
type = ASN_OCTET_STR;
} else if (netsnmp_oid_equals(request_ rootoid , 9, testCounter_oid, 9) == 0) {
dataint = 1234;
datapointer = &dataint;
length = sizeof(dataint);
type = ASN_INTEGER;
} else {
strcpy(buffer, "UNKNOWN_OID");
datapointer = buffer;
length = strlen(buffer);
type = ASN_OCTET_STR;
}
switch(reqinfo->mode) {
case MODE_GET:
snmp_set_var_typed_value(requests->requestvb,
type,
datapointer,
length);
break;
default:
/* we should never get here, so this is a really bad error */
snmp_log(LOG_ERR, "unknown mode (%d) in handle_test\n", reqinfo->mode );
return SNMP_ERR_GENERR;
}
return SNMP_ERR_NOERROR;
}
----- Original Message -----
Fra: "Jatin Bodarya" <[email protected]>
Til: "Sverre Moe" <[email protected]>
Kopi: [email protected]
Sendt: 5. september 2012 11:12:01
Emne: RE: A primary OID handler for a whole subtree
Could anyone point me in the right direction concerning my MIB module? Do I
need to implement it in a different way and/or am I missing something?
It does not seem like request for any child elements of test are directed to
its handler. Though if I register all 3 scalars with same handler method (put
aside that my OID comparison does not work). Is there any other way to do this
or do I really need to register all scalars this way?
...................................................................................................
Wrong:
snmp_set_var_typed_value(requests->requestvb,
ASN_OCTET_STR,
datapointer,
sizeof(datapointer));
right
snmp_set_var_typed_value(requests->requestvb,
ASN_OCTET_STR,
&datapointer,
sizeof(datapointer));
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