inetcidrroutetable_interface.c

开发snmp的开发包有两个开放的SNMP开发库

void
inetCidrRouteTable_valid_columns_set(netsnmp_column_info *vc)
{
    inetCidrRouteTable_if_ctx.tbl_info.valid_columns = vc;
}                               /* inetCidrRouteTable_valid_columns_set */

/**
 * @internal
 * convert the index component stored in the context to an oid
 */
int
inetCidrRouteTable_index_to_oid(netsnmp_index * oid_idx,
                                inetCidrRouteTable_mib_index * mib_idx)
{
    int             err = SNMP_ERR_NOERROR;

    /*
     * temp storage for parsing indexes
     */
    /*
     * inetCidrRouteDestType(1)/InetAddressType/ASN_INTEGER/long(u_long)//l/a/w/E/r/d/h
     */
    netsnmp_variable_list var_inetCidrRouteDestType;
    /*
     * inetCidrRouteDest(2)/InetAddress/ASN_OCTET_STR/char(char)//L/a/w/e/R/d/h
     */
    netsnmp_variable_list var_inetCidrRouteDest;
    /*
     * inetCidrRoutePfxLen(3)/InetAddressPrefixLength/ASN_UNSIGNED/u_long(u_long)//l/a/w/e/R/d/H
     */
    netsnmp_variable_list var_inetCidrRoutePfxLen;
    /*
     * inetCidrRoutePolicy(4)/OBJECTID/ASN_OBJECT_ID/oid(oid)//L/a/w/e/r/d/h
     */
    netsnmp_variable_list var_inetCidrRoutePolicy;
    /*
     * inetCidrRouteNextHopType(5)/InetAddressType/ASN_INTEGER/long(u_long)//l/a/w/E/r/d/h
     */
    netsnmp_variable_list var_inetCidrRouteNextHopType;
    /*
     * inetCidrRouteNextHop(6)/InetAddress/ASN_OCTET_STR/char(char)//L/a/w/e/R/d/h
     */
    netsnmp_variable_list var_inetCidrRouteNextHop;

    /*
     * set up varbinds
     */
    memset(&var_inetCidrRouteDestType, 0x00,
           sizeof(var_inetCidrRouteDestType));
    var_inetCidrRouteDestType.type = ASN_INTEGER;
    memset(&var_inetCidrRouteDest, 0x00, sizeof(var_inetCidrRouteDest));
    var_inetCidrRouteDest.type = ASN_OCTET_STR;
    memset(&var_inetCidrRoutePfxLen, 0x00,
           sizeof(var_inetCidrRoutePfxLen));
    var_inetCidrRoutePfxLen.type = ASN_UNSIGNED;
    memset(&var_inetCidrRoutePolicy, 0x00,
           sizeof(var_inetCidrRoutePolicy));
    var_inetCidrRoutePolicy.type = ASN_OBJECT_ID;
    memset(&var_inetCidrRouteNextHopType, 0x00,
           sizeof(var_inetCidrRouteNextHopType));
    var_inetCidrRouteNextHopType.type = ASN_INTEGER;
    memset(&var_inetCidrRouteNextHop, 0x00,
           sizeof(var_inetCidrRouteNextHop));
    var_inetCidrRouteNextHop.type = ASN_OCTET_STR;

    /*
     * chain temp index varbinds together
     */
    var_inetCidrRouteDestType.next_variable = &var_inetCidrRouteDest;
    var_inetCidrRouteDest.next_variable = &var_inetCidrRoutePfxLen;
    var_inetCidrRoutePfxLen.next_variable = &var_inetCidrRoutePolicy;
    var_inetCidrRoutePolicy.next_variable = &var_inetCidrRouteNextHopType;
    var_inetCidrRouteNextHopType.next_variable = &var_inetCidrRouteNextHop;
    var_inetCidrRouteNextHop.next_variable = NULL;


    DEBUGMSGTL(("verbose:inetCidrRouteTable:inetCidrRouteTable_index_to_oid", "called\n"));

    /*
     * inetCidrRouteDestType(1)/InetAddressType/ASN_INTEGER/long(u_long)//l/a/w/E/r/d/h 
     */
    snmp_set_var_value(&var_inetCidrRouteDestType,
                       (u_char *) & mib_idx->inetCidrRouteDestType,
                       sizeof(mib_idx->inetCidrRouteDestType));

    /*
     * inetCidrRouteDest(2)/InetAddress/ASN_OCTET_STR/char(char)//L/a/w/e/R/d/h 
     */
    snmp_set_var_value(&var_inetCidrRouteDest,
                       (u_char *) & mib_idx->inetCidrRouteDest,
                       mib_idx->inetCidrRouteDest_len *
                       sizeof(mib_idx->inetCidrRouteDest[0]));

    /*
     * inetCidrRoutePfxLen(3)/InetAddressPrefixLength/ASN_UNSIGNED/u_long(u_long)//l/a/w/e/R/d/H 
     */
    snmp_set_var_value(&var_inetCidrRoutePfxLen,
                       (u_char *) & mib_idx->inetCidrRoutePfxLen,
                       sizeof(mib_idx->inetCidrRoutePfxLen));

    /*
     * inetCidrRoutePolicy(4)/OBJECTID/ASN_OBJECT_ID/oid(oid)//L/a/w/e/r/d/h 
     */
    snmp_set_var_value(&var_inetCidrRoutePolicy,
                       (u_char *) & mib_idx->inetCidrRoutePolicy,
                       mib_idx->inetCidrRoutePolicy_len *
                       sizeof(mib_idx->inetCidrRoutePolicy[0]));

    /*
     * inetCidrRouteNextHopType(5)/InetAddressType/ASN_INTEGER/long(u_long)//l/a/w/E/r/d/h 
     */
    snmp_set_var_value(&var_inetCidrRouteNextHopType,
                       (u_char *) & mib_idx->inetCidrRouteNextHopType,
                       sizeof(mib_idx->inetCidrRouteNextHopType));

    /*
     * inetCidrRouteNextHop(6)/InetAddress/ASN_OCTET_STR/char(char)//L/a/w/e/R/d/h 
     */
    snmp_set_var_value(&var_inetCidrRouteNextHop,
                       (u_char *) & mib_idx->inetCidrRouteNextHop,
                       mib_idx->inetCidrRouteNextHop_len *
                       sizeof(mib_idx->inetCidrRouteNextHop[0]));


    err = build_oid_noalloc(oid_idx->oids, oid_idx->len, &oid_idx->len,
                            NULL, 0, &var_inetCidrRouteDestType);
    if (err)
        snmp_log(LOG_ERR, "error %d converting index to oid\n", err);

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

    return err;
}                               /* inetCidrRouteTable_index_to_oid */

/**
 * extract inetCidrRouteTable indexes from a netsnmp_index
 *
 * @retval SNMP_ERR_NOERROR  : no error
 * @retval SNMP_ERR_GENERR   : error
 */
int
inetCidrRouteTable_index_from_oid(netsnmp_index * oid_idx,
                                  inetCidrRouteTable_mib_index * mib_idx)
{
    int             err = SNMP_ERR_NOERROR;

    /*
     * temp storage for parsing indexes
     */
    /*
     * inetCidrRouteDestType(1)/InetAddressType/ASN_INTEGER/long(u_long)//l/a/w/E/r/d/h
     */
    netsnmp_variable_list var_inetCidrRouteDestType;
    /*
     * inetCidrRouteDest(2)/InetAddress/ASN_OCTET_STR/char(char)//L/a/w/e/R/d/h
     */
    netsnmp_variable_list var_inetCidrRouteDest;
    /*
     * inetCidrRoutePfxLen(3)/InetAddressPrefixLength/ASN_UNSIGNED/u_long(u_long)//l/a/w/e/R/d/H
     */
    netsnmp_variable_list var_inetCidrRoutePfxLen;
    /*
     * inetCidrRoutePolicy(4)/OBJECTID/ASN_OBJECT_ID/oid(oid)//L/a/w/e/r/d/h
     */
    netsnmp_variable_list var_inetCidrRoutePolicy;
    /*
     * inetCidrRouteNextHopType(5)/InetAddressType/ASN_INTEGER/long(u_long)//l/a/w/E/r/d/h
     */
    netsnmp_variable_list var_inetCidrRouteNextHopType;
    /*
     * inetCidrRouteNextHop(6)/InetAddress/ASN_OCTET_STR/char(char)//L/a/w/e/R/d/h
     */
    netsnmp_variable_list var_inetCidrRouteNextHop;

    /*
     * set up varbinds
     */
    memset(&var_inetCidrRouteDestType, 0x00,
           sizeof(var_inetCidrRouteDestType));
    var_inetCidrRouteDestType.type = ASN_INTEGER;
    memset(&var_inetCidrRouteDest, 0x00, sizeof(var_inetCidrRouteDest));
    var_inetCidrRouteDest.type = ASN_OCTET_STR;
    memset(&var_inetCidrRoutePfxLen, 0x00,
           sizeof(var_inetCidrRoutePfxLen));
    var_inetCidrRoutePfxLen.type = ASN_UNSIGNED;
    memset(&var_inetCidrRoutePolicy, 0x00,
           sizeof(var_inetCidrRoutePolicy));
    var_inetCidrRoutePolicy.type = ASN_OBJECT_ID;
    memset(&var_inetCidrRouteNextHopType, 0x00,
           sizeof(var_inetCidrRouteNextHopType));
    var_inetCidrRouteNextHopType.type = ASN_INTEGER;
    memset(&var_inetCidrRouteNextHop, 0x00,
           sizeof(var_inetCidrRouteNextHop));
    var_inetCidrRouteNextHop.type = ASN_OCTET_STR;

    /*
     * chain temp index varbinds together
     */
    var_inetCidrRouteDestType.next_variable = &var_inetCidrRouteDest;
    var_inetCidrRouteDest.next_variable = &var_inetCidrRoutePfxLen;
    var_inetCidrRoutePfxLen.next_variable = &var_inetCidrRoutePolicy;
    var_inetCidrRoutePolicy.next_variable = &var_inetCidrRouteNextHopType;
    var_inetCidrRouteNextHopType.next_variable = &var_inetCidrRouteNextHop;
    var_inetCidrRouteNextHop.next_variable = NULL;


    DEBUGMSGTL(("verbose:inetCidrRouteTable:inetCidrRouteTable_index_from_oid", "called\n"));

    /*
     * parse the oid into the individual index components
     */
    err = parse_oid_indexes(oid_idx->oids, oid_idx->len,
                            &var_inetCidrRouteDestType);
    if (err == SNMP_ERR_NOERROR) {
        /*
         * copy out values
         */
        mib_idx->inetCidrRouteDestType =
            *((u_long *) var_inetCidrRouteDestType.val.string);
        /*
         * NOTE: val_len is in bytes, inetCidrRouteDest_len might not be
         */
        if (var_inetCidrRouteDest.val_len >
            sizeof(mib_idx->inetCidrRouteDest))
            err = SNMP_ERR_GENERR;
        else {
            memcpy(mib_idx->inetCidrRouteDest,
                   var_inetCidrRouteDest.val.string,
                   var_inetCidrRouteDest.val_len);
            mib_idx->inetCidrRouteDest_len =
                var_inetCidrRouteDest.val_len /
                sizeof(mib_idx->inetCidrRouteDest[0]);
        }
        mib_idx->inetCidrRoutePfxLen =
            *((u_long *) var_inetCidrRoutePfxLen.val.string);
        /*
         * NOTE: val_len is in bytes, inetCidrRoutePolicy_len might not be
         */
        if (var_inetCidrRoutePolicy.val_len >
            sizeof(mib_idx->inetCidrRoutePolicy))
            err = SNMP_ERR_GENERR;
        else {
            memcpy(mib_idx->inetCidrRoutePolicy,
                   var_inetCidrRoutePolicy.val.string,
                   var_inetCidrRoutePolicy.val_len);
            mib_idx->inetCidrRoutePolicy_len =
                var_inetCidrRoutePolicy.val_len /
                sizeof(mib_idx->inetCidrRoutePolicy[0]);
        }
        mib_idx->inetCidrRouteNextHopType =
            *((u_long *) var_inetCidrRouteNextHopType.val.string);
        /*
         * NOTE: val_len is in bytes, inetCidrRouteNextHop_len might not be
         */
        if (var_inetCidrRouteNextHop.val_len >
            sizeof(mib_idx->inetCidrRouteNextHop))
            err = SNMP_ERR_GENERR;
        else {
            memcpy(mib_idx->inetCidrRouteNextHop,
                   var_inetCidrRouteNextHop.val.string,
                   var_inetCidrRouteNextHop.val_len);
            mib_idx->inetCidrRouteNextHop_len =
                var_inetCidrRouteNextHop.val_len /
                sizeof(mib_idx->inetCidrRouteNextHop[0]);
        }


    }

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

    return err;
}                               /* inetCidrRouteTable_index_from_oid */


/*
 *********************************************************************
 * @internal
 * allocate resources for a inetCidrRouteTable_rowreq_ctx
 */
inetCidrRouteTable_rowreq_ctx *
inetCidrRouteTable_allocate_rowreq_ctx(inetCidrRouteTable_data * data,
                                       void *user_init_ctx)
{
    inetCidrRouteTable_rowreq_ctx *rowreq_ctx =
        SNMP_MALLOC_TYPEDEF(inetCidrRouteTable_rowreq_ctx);

    DEBUGMSGTL(("internal:inetCidrRouteTable:inetCidrRouteTable_allocate_rowreq_ctx", "called\n"));

    if (NULL == rowreq_ctx) {
        snmp_log(LOG_ERR, "Couldn't allocate memory for a "
                 "inetCidrRouteTable_rowreq_ctx.\n");
        return NULL;
    } else {
        if (NULL != data) {
            /*
             * track if we got data from user
             */
            rowreq_ctx->rowreq_flags |= MFD_ROW_DATA_FROM_USER;
            rowreq_ctx->data = data;
        } else if (NULL ==
                   (rowreq_ctx->data =
                    inetCidrRouteTable_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->inetCidrRouteTable_data_list = NULL;

    /*
     * if we allocated data, call init routine
     */
    if (!(rowreq_ctx->rowreq_flags & MFD_ROW_DATA_FROM_USER)) {
        if (SNMPERR_SUCCESS !=
            inetCidrRouteTable_rowreq_ctx_init(rowreq_ctx,
                                               user_init_ctx)) {
            inetCidrRouteTable_release_rowreq_ctx(rowreq_ctx);
            rowreq_ctx = NULL;
        }
    }

    return rowreq_ctx;
}                               /* inetCidrRouteTable_allocate_rowreq_ctx */

/*
 * @internal
 * release resources for a inetCidrRouteTable_rowreq_ctx
 */
void
inetCidrRouteTable_release_rowreq_ctx(inetCidrRouteTable_rowreq_ctx *
                                      rowreq_ctx)
{
    DEBUGMSGTL(("internal:inetCidrRouteTable:inetCidrRouteTable_release_rowreq_ctx", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

    inetCidrRouteTable_rowreq_ctx_cleanup(rowreq_ctx);

    /*
     * for non-transient data, don't free data we got from the user
     */
    if ((rowreq_ctx->data) &&
        !(rowreq_ctx->rowreq_flags & MFD_ROW_DATA_FROM_USER))
        inetCidrRouteTable_release_data(rowreq_ctx->data);

    if (rowreq_ctx->undo)
        inetCidrRouteTable_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);
}                               /* inetCidrRouteTable_release_rowreq_ctx */