示例#1
0
文件: instance.c 项目: OPSF/uClinux
/**
 * This function injects a "read only" handler into the handler chain 
 * prior to serializing/registering the handler.
 *
 * The only purpose of this "read only" handler is to return an
 * appropriate error for any requests passed to it in a SET mode.
 * Inserting it into your handler chain will ensure you're never
 * asked to perform a SET request so you can ignore those error
 * conditions.
 *
 * @param reginfo a handler registration structure which could get created
 *                using netsnmp_create_handler_registration.  Used to register
 *                a read only instance helper handler.
 *
 * @return
 *      MIB_REGISTERED_OK is returned if the registration was a success.
 *	Failures are MIB_REGISTRATION_FAILED and MIB_DUPLICATE_REGISTRATION.
 */
int
netsnmp_register_read_only_instance(netsnmp_handler_registration *reginfo)
{
    netsnmp_inject_handler(reginfo, netsnmp_get_instance_handler());
    netsnmp_inject_handler(reginfo, netsnmp_get_read_only_handler());
    return netsnmp_register_serialize(reginfo);
}
示例#2
0
文件: instance.c 项目: OPSF/uClinux
/**
 * This function registers an instance helper handler, which is a way of 
 * registering an exact OID such that GENEXT requests are handled entirely
 * by the helper. First need to inject it into the calling chain of the 
 * handler defined by the netsnmp_handler_registration struct, reginfo.  
 * The new handler is injected at the top of the list and will be the new
 * handler to be called first.  This function also injects a serialize 
 * handler before actually calling netsnmp_register_handle, registering 
 * reginfo.
 *
 * @param reginfo a handler registration structure which could get created
 *                using netsnmp_create_handler_registration.  Used to register
 *                an instance helper handler.
 *
 * @return
 *      MIB_REGISTERED_OK is returned if the registration was a success.
 *	Failures are MIB_REGISTRATION_FAILED and MIB_DUPLICATE_REGISTRATION.
 */
int
netsnmp_register_instance(netsnmp_handler_registration *reginfo)
{
    netsnmp_mib_handler *handler = netsnmp_get_instance_handler();
    handler->flags |= MIB_HANDLER_INSTANCE;
    netsnmp_inject_handler(reginfo, handler);
    return netsnmp_register_serialize(reginfo);
}
示例#3
0
int
netsnmp_register_scalar_group(netsnmp_handler_registration *reginfo,
                              oid first, oid last)
{
    netsnmp_inject_handler(reginfo, netsnmp_get_instance_handler());
    netsnmp_inject_handler(reginfo, netsnmp_get_scalar_group_handler(first, last));
    return netsnmp_register_serialize(reginfo);
}
示例#4
0
int
netsnmp_register_scalar_group(netsnmp_handler_registration *reginfo,
                              oid first, oid last)
{
    reginfo->rootoid = realloc(reginfo->rootoid,
                              (reginfo->rootoid_len+2) * sizeof(oid) );
    reginfo->rootoid[ reginfo->rootoid_len   ] = 0;
    reginfo->rootoid[ reginfo->rootoid_len+1 ] = 0;

    netsnmp_inject_handler(reginfo, netsnmp_get_instance_handler());
    netsnmp_inject_handler(reginfo, netsnmp_get_scalar_handler());
    netsnmp_inject_handler(reginfo, netsnmp_get_scalar_group_handler(first, last));
    return netsnmp_register_serialize(reginfo);
}
示例#5
0
int
netsnmp_register_scalar(netsnmp_handler_registration *reginfo)
{
    /*
     * Extend the registered OID with space for the instance subid
     * (but don't extend the length just yet!)
     */
    reginfo->rootoid = realloc(reginfo->rootoid,
                              (reginfo->rootoid_len+1) * sizeof(oid) );
    reginfo->rootoid[ reginfo->rootoid_len ] = 0;

    netsnmp_inject_handler(reginfo, netsnmp_get_instance_handler());
    netsnmp_inject_handler(reginfo, netsnmp_get_scalar_handler());
    return netsnmp_register_serialize(reginfo);
}
示例#6
0
/**
 * This function registers an instance helper handler, which is a way of 
 * registering an exact OID such that GENEXT requests are handled entirely
 * by the helper. First need to inject it into the calling chain of the 
 * handler defined by the netsnmp_handler_registration struct, reginfo.  
 * The new handler is injected at the top of the list and will be the new
 * handler to be called first.  This function also injects a serialize 
 * handler before actually calling netsnmp_register_handle, registering 
 * reginfo.
 *
 * @param reginfo a handler registration structure which could get created
 *                using netsnmp_create_handler_registration.  Used to register
 *                an instance helper handler.
 *
 * @return
 *      MIB_REGISTERED_OK is returned if the registration was a success.
 *	Failures are MIB_REGISTRATION_FAILED and MIB_DUPLICATE_REGISTRATION.
 */
int
netsnmp_register_instance(netsnmp_handler_registration *reginfo)
{
    netsnmp_mib_handler *handler = netsnmp_get_instance_handler();
    if (handler) {
        handler->flags |= MIB_HANDLER_INSTANCE;
        if (netsnmp_inject_handler(reginfo, handler) == SNMPERR_SUCCESS)
            return netsnmp_register_serialize(reginfo);
    }

    snmp_log(LOG_ERR, "failed to register instance\n");
    netsnmp_handler_free(handler);
    netsnmp_handler_registration_free(reginfo);

    return MIB_REGISTRATION_FAILED;
}
示例#7
0
/**
 * This function injects a "read only" handler into the handler chain 
 * prior to serializing/registering the handler.
 *
 * The only purpose of this "read only" handler is to return an
 * appropriate error for any requests passed to it in a SET mode.
 * Inserting it into your handler chain will ensure you're never
 * asked to perform a SET request so you can ignore those error
 * conditions.
 *
 * @param reginfo a handler registration structure which could get created
 *                using netsnmp_create_handler_registration.  Used to register
 *                a read only instance helper handler.
 *
 * @return
 *      MIB_REGISTERED_OK is returned if the registration was a success.
 *	Failures are MIB_REGISTRATION_FAILED and MIB_DUPLICATE_REGISTRATION.
 */
int
netsnmp_register_read_only_instance(netsnmp_handler_registration *reginfo)
{
    netsnmp_mib_handler *h1, *h2;
    if (!reginfo)
        return MIB_REGISTRATION_FAILED;

    h1 = netsnmp_get_instance_handler();
    h2 = netsnmp_get_read_only_handler();
    if (h1 && h2 && netsnmp_inject_handler(reginfo, h1) == SNMPERR_SUCCESS) {
        h1 = NULL;
        if (netsnmp_inject_handler(reginfo, h2) == SNMPERR_SUCCESS)
            return netsnmp_register_serialize(reginfo);
    }

    snmp_log(LOG_ERR, "failed to register read only instance\n");
    netsnmp_handler_free(h1);
    netsnmp_handler_free(h2);
    netsnmp_handler_registration_free(reginfo);

   return MIB_REGISTRATION_FAILED;
}