inetnettomediatable_interface.c

开发snmp的开发包有两个开放的SNMP开发库

    if (MFD_SUCCESS != *rc_ptr) {
        netsnmp_assert((*rc_ptr == SNMP_ERR_NOCREATION) ||
                       (*rc_ptr == SNMP_ERR_INCONSISTENTNAME));
        inetNetToMediaTable_release_rowreq_ctx(rowreq_ctx);
        return NULL;
    }

    /*
     * copy indexes
     */
    rowreq_ctx->oid_idx.len = oid_idx->len;
    memcpy(rowreq_ctx->oid_idx.oids, oid_idx->oids,
           oid_idx->len * sizeof(oid));

    return rowreq_ctx;
}                               /* _mfd_inetNetToMediaTable_rowreq_from_index */


/**
 * @internal
 * wrapper
 */
static int
_mfd_inetNetToMediaTable_object_lookup(netsnmp_mib_handler *handler, netsnmp_handler_registration
                                       *reginfo, netsnmp_agent_request_info
                                       *agtreq_info,
                                       netsnmp_request_info *requests)
{
    int             rc = SNMP_ERR_NOERROR;
    inetNetToMediaTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);

    DEBUGMSGTL(("internal:inetNetToMediaTable:_mfd_inetNetToMediaTable_object_lookup", "called\n"));

    /*
     * get our context from mfd
     * inetNetToMediaTable_interface_ctx *if_ctx =
     *             (inetNetToMediaTable_interface_ctx *)reginfo->my_reg_void;
     */

    if (NULL == rowreq_ctx) {
        netsnmp_table_request_info *tblreq_info;
        netsnmp_index   oid_idx;

        tblreq_info = netsnmp_extract_table_info(requests);
        if (NULL == tblreq_info) {
            snmp_log(LOG_ERR, "request had no table info\n");
            return MFD_ERROR;
        }

        /*
         * try create rowreq
         */
        oid_idx.oids = tblreq_info->index_oid;
        oid_idx.len = tblreq_info->index_oid_len;

        rowreq_ctx =
            _mfd_inetNetToMediaTable_rowreq_from_index(&oid_idx, &rc);
        if (MFD_SUCCESS == rc) {
            netsnmp_assert(NULL != rowreq_ctx);
            rowreq_ctx->rowreq_flags |= MFD_ROW_CREATED;
            /*
             * add rowreq_ctx to request data lists
             */
            netsnmp_container_table_row_insert(requests, (netsnmp_index *)
                                               rowreq_ctx);
        }
    }

    if (MFD_SUCCESS != rc)
        netsnmp_request_set_error_all(requests, rc);
    else
        inetNetToMediaTable_row_prep(rowreq_ctx);

    return SNMP_VALIDATE_ERR(rc);
}                               /* _mfd_inetNetToMediaTable_object_lookup */

/***********************************************************************
 *
 * GET processing
 *
 ***********************************************************************/
/*
 * @internal
 * Retrieve the value for a particular column
 */
NETSNMP_STATIC_INLINE int
_inetNetToMediaTable_get_column(inetNetToMediaTable_rowreq_ctx *
                                rowreq_ctx, netsnmp_variable_list * var,
                                int column)
{
    int             rc = SNMPERR_SUCCESS;

    DEBUGMSGTL(("internal:inetNetToMediaTable:_mfd_inetNetToMediaTable_get_column", "called for %d\n", column));


    netsnmp_assert(NULL != rowreq_ctx);

    switch (column) {

        /*
         * inetNetToMediaPhysAddress(4)/PhysAddress/ASN_OCTET_STR/char(char)//L/A/W/e/R/d/H 
         */
    case COLUMN_INETNETTOMEDIAPHYSADDRESS:
        var->type = ASN_OCTET_STR;
        rc = inetNetToMediaPhysAddress_get(rowreq_ctx,
                                           (char **) &var->val.string,
                                           &var->val_len);
        break;

        /*
         * inetNetToMediaLastUpdated(5)/TimeStamp/ASN_TIMETICKS/u_long(u_long)//l/A/w/e/r/d/h 
         */
    case COLUMN_INETNETTOMEDIALASTUPDATED:
        var->val_len = sizeof(u_long);
        var->type = ASN_TIMETICKS;
        rc = inetNetToMediaLastUpdated_get(rowreq_ctx,
                                           (u_long *) var->val.string);
        break;

        /*
         * inetNetToMediaType(6)/INTEGER/ASN_INTEGER/long(u_long)//l/A/W/E/r/D/h 
         */
    case COLUMN_INETNETTOMEDIATYPE:
        var->val_len = sizeof(u_long);
        var->type = ASN_INTEGER;
        rc = inetNetToMediaType_get(rowreq_ctx,
                                    (u_long *) var->val.string);
        break;

        /*
         * inetNetToMediaState(7)/INTEGER/ASN_INTEGER/long(u_long)//l/A/w/E/r/d/h 
         */
    case COLUMN_INETNETTOMEDIASTATE:
        var->val_len = sizeof(u_long);
        var->type = ASN_INTEGER;
        rc = inetNetToMediaState_get(rowreq_ctx,
                                     (u_long *) var->val.string);
        break;

        /*
         * inetNetToMediaRowStatus(8)/RowStatus/ASN_INTEGER/long(u_long)//l/A/W/E/r/d/h 
         */
    case COLUMN_INETNETTOMEDIAROWSTATUS:
        var->val_len = sizeof(u_long);
        var->type = ASN_INTEGER;
        rc = inetNetToMediaRowStatus_get(rowreq_ctx,
                                         (u_long *) var->val.string);
        break;

    default:
        snmp_log(LOG_ERR,
                 "unknown column %d in _inetNetToMediaTable_get_column\n",
                 column);
        break;
    }

    return rc;
}                               /* _inetNetToMediaTable_get_column */

int
_mfd_inetNetToMediaTable_get_values(netsnmp_mib_handler *handler,
                                    netsnmp_handler_registration *reginfo,
                                    netsnmp_agent_request_info
                                    *agtreq_info,
                                    netsnmp_request_info *requests)
{
    inetNetToMediaTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);
    netsnmp_table_request_info *tri;
    u_char         *old_string;
    void            (*dataFreeHook) (void *);
    int             rc;

    DEBUGMSGTL(("internal:inetNetToMediaTable:_mfd_inetNetToMediaTable_get_values", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

    for (; requests; requests = requests->next) {
        /*
         * save old pointer, so we can free it if replaced
         */
        old_string = requests->requestvb->val.string;
        dataFreeHook = requests->requestvb->dataFreeHook;
        if (NULL == requests->requestvb->val.string) {
            requests->requestvb->val.string = requests->requestvb->buf;
            requests->requestvb->val_len =
                sizeof(requests->requestvb->buf);
        } else if (requests->requestvb->buf ==
                   requests->requestvb->val.string) {
            if (requests->requestvb->val_len !=
                sizeof(requests->requestvb->buf))
                requests->requestvb->val_len =
                    sizeof(requests->requestvb->buf);
        }

        /*
         * get column data
         */
        tri = netsnmp_extract_table_info(requests);
        if (NULL == tri)
            continue;

        rc = _inetNetToMediaTable_get_column(rowreq_ctx,
                                             requests->requestvb,
                                             tri->colnum);
        if (rc) {
            if (MFD_SKIP == rc) {
                requests->requestvb->type = SNMP_NOSUCHINSTANCE;
                rc = SNMP_ERR_NOERROR;
            }
        } else if (NULL == requests->requestvb->val.string) {
            snmp_log(LOG_ERR, "NULL varbind data pointer!\n");
            rc = SNMP_ERR_GENERR;
        }
        if (rc)
            netsnmp_request_set_error(requests, SNMP_VALIDATE_ERR(rc));

        /*
         * if the buffer wasn't used previously for the old data (i.e. it
         * was allcoated memory)  and the get routine replaced the pointer,
         * we need to free the previous pointer.
         */
        if (old_string && (old_string != requests->requestvb->buf) &&
            (requests->requestvb->val.string != old_string)) {
            if (dataFreeHook)
                (*dataFreeHook) (old_string);
            else
                free(old_string);
        }
    }                           /* for results */

    return SNMP_ERR_NOERROR;
}                               /* _mfd_inetNetToMediaTable_get_values */

NETSNMP_STATIC_INLINE int
_inetNetToMediaTable_check_indexes(inetNetToMediaTable_rowreq_ctx *
                                   rowreq_ctx)
{
    int             rc = SNMPERR_SUCCESS;

    DEBUGMSGTL(("internal:inetNetToMediaTable:_inetNetToMediaTable_check_indexes", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);


    /*
     * (INDEX) inetNetToMediaIfIndex(1)/InterfaceIndex/ASN_INTEGER/long(long)//l/a/w/e/R/d/H 
     */
    /*
     * check defined range(s). 
     */
    if ((SNMPERR_SUCCESS == rc)
        && ((rowreq_ctx->tbl_idx.inetNetToMediaIfIndex < 1)
            || (rowreq_ctx->tbl_idx.inetNetToMediaIfIndex > 2147483647))
        ) {
        rc = SNMP_ERR_WRONGVALUE;
    }
    if (MFD_SUCCESS != rc)
        return rc;
    rc = inetNetToMediaIfIndex_check_index(rowreq_ctx);
    if (MFD_SUCCESS != rc)
        return SNMP_ERR_NOCREATION;

    /*
     * (INDEX) inetNetToMediaNetAddressType(2)/InetAddressType/ASN_INTEGER/long(u_long)//l/a/w/E/r/d/h 
     */
    /*
     * check that the value is one of defined enums 
     */
    if ((SNMPERR_SUCCESS == rc)
        && (rowreq_ctx->tbl_idx.inetNetToMediaNetAddressType !=
            INETADDRESSTYPE_UNKNOWN)
        && (rowreq_ctx->tbl_idx.inetNetToMediaNetAddressType !=
            INETADDRESSTYPE_IPV4)
        && (rowreq_ctx->tbl_idx.inetNetToMediaNetAddressType !=
            INETADDRESSTYPE_IPV6)
        && (rowreq_ctx->tbl_idx.inetNetToMediaNetAddressType !=
            INETADDRESSTYPE_IPV4Z)
        && (rowreq_ctx->tbl_idx.inetNetToMediaNetAddressType !=
            INETADDRESSTYPE_IPV6Z)
        && (rowreq_ctx->tbl_idx.inetNetToMediaNetAddressType !=
            INETADDRESSTYPE_DNS)
        ) {
        rc = SNMP_ERR_WRONGVALUE;
    }
    if (MFD_SUCCESS != rc)
        return rc;
    rc = inetNetToMediaNetAddressType_check_index(rowreq_ctx);
    if (MFD_SUCCESS != rc)
        return SNMP_ERR_NOCREATION;

    /*
     * (INDEX) inetNetToMediaNetAddress(3)/InetAddress/ASN_OCTET_STR/char(char)//L/a/w/e/R/d/h 
     */
    /*
     * check defined range(s). 
     */
    if ((SNMPERR_SUCCESS == rc)
        && ((rowreq_ctx->tbl_idx.inetNetToMediaNetAddress_len < 0)
            || (rowreq_ctx->tbl_idx.inetNetToMediaNetAddress_len > 255))
        ) {
        rc = SNMP_ERR_WRONGLENGTH;
    }
    if (MFD_SUCCESS != rc)
        return rc;
    rc = inetNetToMediaNetAddress_check_index(rowreq_ctx);
    if (MFD_SUCCESS != rc)
        return SNMP_ERR_NOCREATION;

    /*
     * if individual parts look ok, check them as a whole
     */
    return inetNetToMediaTable_validate_index(inetNetToMediaTable_if_ctx.
                                              user_ctx, rowreq_ctx);
}                               /* _inetNetToMediaTable_check_indexes */

/***********************************************************************
 *
 * SET processing
 *
 ***********************************************************************/

/*----------------------------------------------------------------------
 *
 * SET: Syntax checks
 *
 *---------------------------------------------------------------------*/
/*
 * @internal
 * Check the syntax for a particular column
 */
NETSNMP_STATIC_INLINE int
_inetNetToMediaTable_check_column(inetNetToMediaTable_rowreq_ctx *
                                  rowreq_ctx, netsnmp_variable_list * var,
                                  int column)
{
    int             rc = SNMPERR_SUCCESS;

    DEBUGMSGTL(("internal:inetNetToMediaTable:_inetNetToMediaTable_check_column", "called for %d\n", column));

    netsnmp_assert(NULL != rowreq_ctx);

    switch (column) {
        /*
         * (INDEX) inetNetToMediaIfIndex(1)/InterfaceIndex/ASN_INTEGER/long(long)//l/a/w/e/R/d/H 
         */
    case COLUMN_INETNETTOMEDIAIFINDEX:
        rc = SNMP_ERR_NOTWRITABLE;      /* can not change index of active row */
        break;
        /*
         * (INDEX) inetNetToMediaNetAddressType(2)/InetAddressType/ASN_INTEGER/long(u_long)//l/a/w/E/r/d/h 
         */
    case COLUMN_INETNETTOMEDIANETADDRESSTYPE:
        rc = SNMP_ERR_NOTWRITABLE;      /* can not change index of active row */
        break;
        /*
         * (INDEX) inetNetToMediaNetAddress(3)/InetAddress/ASN_OCTET_STR/char(char)//L/a/w/e/R/d/h 
         */
    case COLUMN_INETNETTOMEDIANETADDRESS:
        rc = SNMP_ERR_NOTWRITABLE;      /* can not change index of active row */
        break;

        /*
         * inetNetToMediaPhysAddress(4)/PhysAddress/ASN_OCTET_STR/char(char)//L/A/W/e/R/d/H 
         */
    case COLUMN_INETNETTOMEDIAPHYSADDRESS:
        rc = netsnmp_check_vb_type(var, ASN_OCTET_STR);
        /*
         * check defined range(s). 
         */
        if ((SNMPERR_SUCCESS == rc)
            && ((var->val_len < 0) || (var->val_len > 65535))
            ) {
            rc = SNMP_ERR_WRONGLENGTH;
        }
        if (SNMPERR_SUCCESS != rc) {
            DEBUGMSGTL(("inetNetToMediaTable:_inetNetToMediaTable_check_column:inetNetToMediaPhysAddress", "varbind validation failed (eg bad type or size)\n"));
        } else {
            rc = inetNetToMediaPhysAddress_check_value(rowreq_ctx,
                                                       (char *) var->val.
                                                       string,
                                                       var->val_len);
            if ((MFD_SUCCESS != rc) && (MFD_NOT_VALID_EVER != rc)
                && (MFD_NOT_VALID_NOW != rc)) {
                snmp_log(LOG_ERR,