local/mib2c.scalar.conf

## -*- c -*-
######################################################################
## Do the .h file
######################################################################
@open ${name}.h@
/*
 * Note: this file originally auto-generated by mib2c using
 *        $Id$
 */
#ifndef $name.uc_H
#define $name.uc_H

/* function declarations */
void init_$name(void);
@foreach $i scalar@
Netsnmp_Node_Handler handle_${i};
@end@

#endif /* $name.uc_H */
######################################################################
## Do the .c file
######################################################################
@open ${name}.c@
/*
 * Note: this file originally auto-generated by mib2c using
 *        $Id$
 */

#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "${name}.h"

/** Initializes the $name module */
void
init_$name(void)
{
  @foreach $i scalar@
    static oid ${i}_oid[] = { $i.commaoid };
  @end@

  DEBUGMSGTL(("$name", "Initializing\n"));

  @foreach $i scalar@
    netsnmp_register_scalar(
        netsnmp_create_handler_registration("$i", handle_$i,
                               ${i}_oid, OID_LENGTH(${i}_oid),
    @if !$i.settable@
                               HANDLER_CAN_RONLY
    @end@
    @if $i.settable@
                               HANDLER_CAN_RWRITE
    @end@
        ));
  @end@
}

@foreach $i scalar@
int
handle_$i(netsnmp_mib_handler *handler,
                          netsnmp_handler_registration *reginfo,
                          netsnmp_agent_request_info   *reqinfo,
                          netsnmp_request_info         *requests)
{
    /* 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. */
    
    switch(reqinfo->mode) {

        case MODE_GET:
            snmp_set_var_typed_value(requests->requestvb, $i.type,
                                     (u_char *) /* XXX: a pointer to the scalar's data */,
                                     /* XXX: the length of the data in bytes */);
            break;

        @if $i.settable@
        /*
         * 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:
            if (/* XXX: check incoming data in requests->requestvb->val.XXX for failures, like an incorrect type or an illegal value or ... */) {
                netsnmp_set_request_error(reqinfo, requests, /* XXX: set error code depending on problem (like SNMP_ERR_WRONGTYPE or SNMP_ERR_WRONGVALUE or ... */);
            }
            break;

        case MODE_SET_RESERVE2:
            /* XXX malloc "undo" storage buffer */
            if (/* 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 */
            if (/* XXX: error? */) {
                netsnmp_set_request_error(reqinfo, requests, /* some error */);
            }
            break;

        case MODE_SET_COMMIT:
            /* XXX: delete temporary storage */
            if (/* 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 (/* XXX: error? */) {
                /* try _really_really_ hard to never get to this point */
                netsnmp_set_request_error(reqinfo, requests, SNMP_ERR_UNDOFAILED);
            }
            break;
        @end@

        default:
            /* we should never get here, so this is a really bad error */
            return SNMP_ERR_GENERR;
    }

    return SNMP_ERR_NOERROR;
}
@end@