ipcidrroutetable_interface.c

snmp的源代码,已经在我的ubuntu下编译通过

 *
 * @retval SNMP_ERR_NOERROR  : no error
 * @retval SNMP_ERR_GENERR   : error
 */
int
ipCidrRouteTable_index_from_oid(netsnmp_index * oid_idx,
                                ipCidrRouteTable_mib_index * mib_idx)
{
    int             err = SNMP_ERR_NOERROR;

    /*
     * temp storage for parsing indexes
     */
    /*
     * ipCidrRouteDest(1)/IPADDR/ASN_IPADDRESS/u_long(u_long)//l/A/w/e/r/d/h
     */
    netsnmp_variable_list var_ipCidrRouteDest;
    /*
     * ipCidrRouteMask(2)/IPADDR/ASN_IPADDRESS/u_long(u_long)//l/A/w/e/r/d/h
     */
    netsnmp_variable_list var_ipCidrRouteMask;
    /*
     * ipCidrRouteTos(3)/INTEGER32/ASN_INTEGER/long(long)//l/A/w/e/R/d/h
     */
    netsnmp_variable_list var_ipCidrRouteTos;
    /*
     * ipCidrRouteNextHop(4)/IPADDR/ASN_IPADDRESS/u_long(u_long)//l/A/w/e/r/d/h
     */
    netsnmp_variable_list var_ipCidrRouteNextHop;

    /*
     * set up varbinds
     */
    memset(&var_ipCidrRouteDest, 0x00, sizeof(var_ipCidrRouteDest));
    var_ipCidrRouteDest.type = ASN_IPADDRESS;
    memset(&var_ipCidrRouteMask, 0x00, sizeof(var_ipCidrRouteMask));
    var_ipCidrRouteMask.type = ASN_IPADDRESS;
    memset(&var_ipCidrRouteTos, 0x00, sizeof(var_ipCidrRouteTos));
    var_ipCidrRouteTos.type = ASN_INTEGER;
    memset(&var_ipCidrRouteNextHop, 0x00, sizeof(var_ipCidrRouteNextHop));
    var_ipCidrRouteNextHop.type = ASN_IPADDRESS;

    /*
     * chain temp index varbinds together
     */
    var_ipCidrRouteDest.next_variable = &var_ipCidrRouteMask;
    var_ipCidrRouteMask.next_variable = &var_ipCidrRouteTos;
    var_ipCidrRouteTos.next_variable = &var_ipCidrRouteNextHop;
    var_ipCidrRouteNextHop.next_variable = NULL;


    DEBUGMSGTL(("verbose:ipCidrRouteTable:ipCidrRouteTable_index_from_oid",
                "called\n"));

    /*
     * parse the oid into the individual index components
     */
    err = parse_oid_indexes(oid_idx->oids, oid_idx->len,
                            &var_ipCidrRouteDest);
    if (err == SNMP_ERR_NOERROR) {
        /*
         * copy out values
         */
        mib_idx->ipCidrRouteDest =
            *((u_long *) var_ipCidrRouteDest.val.string);
        mib_idx->ipCidrRouteMask =
            *((u_long *) var_ipCidrRouteMask.val.string);
        mib_idx->ipCidrRouteTos =
            *((long *) var_ipCidrRouteTos.val.string);
        mib_idx->ipCidrRouteNextHop =
            *((u_long *) var_ipCidrRouteNextHop.val.string);


    }

    /*
     * parsing may have allocated memory. free it.
     */
    snmp_reset_var_buffers(&var_ipCidrRouteDest);

    return err;
}                               /* ipCidrRouteTable_index_from_oid */


/*
 *********************************************************************
 * @internal
 * allocate resources for a ipCidrRouteTable_rowreq_ctx
 */
ipCidrRouteTable_rowreq_ctx *
ipCidrRouteTable_allocate_rowreq_ctx(ipCidrRouteTable_data * data)
{
    ipCidrRouteTable_rowreq_ctx *rowreq_ctx =
        SNMP_MALLOC_TYPEDEF(ipCidrRouteTable_rowreq_ctx);

    DEBUGMSGTL(("internal:ipCidrRouteTable:ipCidrRouteTable_allocate_rowreq_ctx", "called\n"));

    if (NULL == rowreq_ctx) {
        snmp_log(LOG_ERR, "Couldn't allocate memory for a "
                 "ipCidrRouteTable_rowreq_ctx.\n");
    } else {
        if (NULL != data) {
            rowreq_ctx->data = data;
        } else if (NULL ==
                   (rowreq_ctx->data = ipCidrRouteTable_allocate_data())) {
            SNMP_FREE(rowreq_ctx);
            return NULL;
        }
    }

    /*
     * undo context will be allocated when needed (in *_undo_setup)
     */

    rowreq_ctx->oid_idx.oids = rowreq_ctx->oid_tmp;

    rowreq_ctx->ipCidrRouteTable_data_list = NULL;
    rowreq_ctx->ipCidrRouteTable_reg = ipCidrRouteTable_if_ctx.user_ctx;


    return rowreq_ctx;
}                               /* ipCidrRouteTable_allocate_rowreq_ctx */

/*
 * @internal
 * release resources for a ipCidrRouteTable_rowreq_ctx
 */
void
ipCidrRouteTable_release_rowreq_ctx(ipCidrRouteTable_rowreq_ctx *
                                    rowreq_ctx)
{
    DEBUGMSGTL(("internal:ipCidrRouteTable:ipCidrRouteTable_release_rowreq_ctx", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);


    if (rowreq_ctx->data)
        ipCidrRouteTable_release_data(rowreq_ctx->data);

    if (rowreq_ctx->undo)
        ipCidrRouteTable_release_data(rowreq_ctx->undo);

    /*
     * free index oid pointer
     */
    if (rowreq_ctx->oid_idx.oids != rowreq_ctx->oid_tmp)
        free(rowreq_ctx->oid_idx.oids);

    SNMP_FREE(rowreq_ctx);
}                               /* ipCidrRouteTable_release_rowreq_ctx */

/**
 * @internal
 * wrapper
 */
static int
_mfd_ipCidrRouteTable_pre_request(netsnmp_mib_handler *handler,
                                  netsnmp_handler_registration *reginfo,
                                  netsnmp_agent_request_info *agtreq_info,
                                  netsnmp_request_info *requests)
{
    int             rc =
        ipCidrRouteTable_pre_request(ipCidrRouteTable_if_ctx.user_ctx);
    if (MFD_SUCCESS != rc) {
        /*
         * nothing we can do about it but log it
         */
        DEBUGMSGTL(("internal:ipCidrRouteTable", "error %d from "
                    "ipCidrRouteTable_pre_request\n", rc));
        netsnmp_request_set_error_all(requests, SNMP_VALIDATE_ERR(rc));
    }

    return SNMP_ERR_NOERROR;
}                               /* _mfd_ipCidrRouteTable_pre_request */

/**
 * @internal
 * wrapper
 */
static int
_mfd_ipCidrRouteTable_post_request(netsnmp_mib_handler *handler,
                                   netsnmp_handler_registration *reginfo,
                                   netsnmp_agent_request_info *agtreq_info,
                                   netsnmp_request_info *requests)
{
    ipCidrRouteTable_rowreq_ctx *rowreq_ctx;
    int             rc =
        ipCidrRouteTable_post_request(ipCidrRouteTable_if_ctx.user_ctx);
    if (MFD_SUCCESS != rc) {
        /*
         * nothing we can do about it but log it
         */
        DEBUGMSGTL(("internal:ipCidrRouteTable", "error %d from "
                    "ipCidrRouteTable_post_request\n", rc));
    }

    /*
     * if it was set, clear row created flag.
     */
    rowreq_ctx = netsnmp_container_table_row_extract(requests);
    if ((NULL != rowreq_ctx)
        && (rowreq_ctx->rowreq_flags & MFD_ROW_CREATED))
        rowreq_ctx->rowreq_flags &= ~MFD_ROW_CREATED;

    return SNMP_ERR_NOERROR;
}                               /* _mfd_ipCidrRouteTable_post_request */

/**
 * @internal
 * wrapper
 */
static int
_mfd_ipCidrRouteTable_object_lookup(netsnmp_mib_handler *handler,
                                    netsnmp_handler_registration *reginfo,
                                    netsnmp_agent_request_info
                                    *agtreq_info,
                                    netsnmp_request_info *requests)
{
    ipCidrRouteTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);

    DEBUGMSGTL(("internal:ipCidrRouteTable:_mfd_ipCidrRouteTable_object_lookup", "called\n"));

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

    if (NULL == rowreq_ctx) {
        int             rc = MFD_SUCCESS;
        netsnmp_table_request_info *tblreq_info;
        netsnmp_index   oid_idx;
        ipCidrRouteTable_mib_index mib_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 to parse oid
         */
        oid_idx.oids = tblreq_info->index_oid;
        oid_idx.len = tblreq_info->index_oid_len;
        rc = ipCidrRouteTable_index_from_oid(&oid_idx, &mib_idx);
        if (MFD_SUCCESS != rc) {
            DEBUGMSGT(("ipCidrRouteTable", "error parsing index\n"));
            netsnmp_request_set_error_all(requests, SNMP_VALIDATE_ERR(rc));
        } else {
            /*
             * allocate new context
             */
            rowreq_ctx = ipCidrRouteTable_allocate_rowreq_ctx(NULL);
            if (NULL == rowreq_ctx)
                return MFD_ERROR;       /* msg already logged */

            memcpy(&rowreq_ctx->tbl_idx, &mib_idx, sizeof(mib_idx));

            /*
             * check indexes
             */
            rc = _ipCidrRouteTable_check_indexes(rowreq_ctx);
            if (MFD_SUCCESS != rc) {
                netsnmp_assert((rc == SNMP_ERR_NOCREATION) ||
                               (rc == SNMP_ERR_INCONSISTENTNAME));
                netsnmp_request_set_error_all(requests,
                                              SNMP_VALIDATE_ERR(rc));
                ipCidrRouteTable_release_rowreq_ctx(rowreq_ctx);
            } else {
                rowreq_ctx->rowreq_flags |= MFD_ROW_CREATED;
                netsnmp_container_table_row_insert(requests, rowreq_ctx);
            }
        }
    } else {
        ipCidrRouteTable_row_prep(rowreq_ctx);
    }

    return SNMP_ERR_NOERROR;
}                               /* _mfd_ipCidrRouteTable_object_lookup */

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

    DEBUGMSGTL(("internal:ipCidrRouteTable:_mfd_ipCidrRouteTable_get_column", "called\n"));


    netsnmp_assert(NULL != rowreq_ctx);

    switch (column) {

        /*
         * (INDEX) ipCidrRouteDest(1)/IPADDR/ASN_IPADDRESS/u_long(u_long)//l/A/w/e/r/d/h 
         */
    case COLUMN_IPCIDRROUTEDEST:
        var->type = ASN_IPADDRESS;
        var->val_len = sizeof(u_long);
        (*var->val.integer) = rowreq_ctx->tbl_idx.ipCidrRouteDest;
        break;

        /*
         * (INDEX) ipCidrRouteMask(2)/IPADDR/ASN_IPADDRESS/u_long(u_long)//l/A/w/e/r/d/h 
         */
    case COLUMN_IPCIDRROUTEMASK:
        var->type = ASN_IPADDRESS;
        var->val_len = sizeof(u_long);
        (*var->val.integer) = rowreq_ctx->tbl_idx.ipCidrRouteMask;
        break;

        /*
         * (INDEX) ipCidrRouteTos(3)/INTEGER32/ASN_INTEGER/long(long)//l/A/w/e/R/d/h 
         */
    case COLUMN_IPCIDRROUTETOS:
        var->type = ASN_INTEGER;
        var->val_len = sizeof(long);
        (*var->val.integer) = rowreq_ctx->tbl_idx.ipCidrRouteTos;
        break;

        /*
         * (INDEX) ipCidrRouteNextHop(4)/IPADDR/ASN_IPADDRESS/u_long(u_long)//l/A/w/e/r/d/h 
         */
    case COLUMN_IPCIDRROUTENEXTHOP:
        var->type = ASN_IPADDRESS;
        var->val_len = sizeof(u_long);
        (*var->val.integer) = rowreq_ctx->tbl_idx.ipCidrRouteNextHop;
        break;

        /*
         * ipCidrRouteIfIndex(5)/INTEGER32/ASN_INTEGER/long(long)//l/A/W/e/r/D/h 
         */
    case COLUMN_IPCIDRROUTEIFINDEX:
        var->val_len = sizeof(long);
        var->type = ASN_INTEGER;
        rc = ipCidrRouteIfIndex_get(rowreq_ctx, (long *) var->val.string);
        break;

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

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

        /*
         * ipCidrRouteAge(8)/INTEGER32/ASN_INTEGER/long(long)//l/A/w/e/r/D/h 
         */
    case COLUMN_IPCIDRROUTEAGE:
        var->val_len = sizeof(long);
        var->type = ASN_INTEGER;
        rc = ipCidrRouteAge_get(rowreq_ctx, (long *) var->val.string);
        break;

        /*
         * ipCidrRouteInfo(9)/OBJECTID/ASN_OBJECT_ID/oid(oid)//L/A/W/e/r/d/h 
         */
    case COLUMN_IPCIDRROUTEINFO:
        var->type = ASN_OBJECT_ID;
        rc = ipCidrRouteInfo_get(rowreq_ctx, (oid **) & var->val.string,
                                 &var->val_len);