ipaddresstable_interface.c

开发snmp的开发包有两个开放的SNMP开发库

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

    DEBUGMSGTL(("internal:ipAddressTable:_mfd_ipAddressTable_get_column",
                "called for %d\n", column));


    netsnmp_assert(NULL != rowreq_ctx);

    switch (column) {

        /*
         * ipAddressIfIndex(3)/InterfaceIndex/ASN_INTEGER/long(long)//l/A/W/e/R/d/H 
         */
    case COLUMN_IPADDRESSIFINDEX:
        var->val_len = sizeof(long);
        var->type = ASN_INTEGER;
        rc = ipAddressIfIndex_get(rowreq_ctx, (long *) var->val.string);
        break;

        /*
         * ipAddressType(4)/INTEGER/ASN_INTEGER/long(u_long)//l/A/W/E/r/D/h 
         */
    case COLUMN_IPADDRESSTYPE:
        var->val_len = sizeof(u_long);
        var->type = ASN_INTEGER;
        rc = ipAddressType_get(rowreq_ctx, (u_long *) var->val.string);
        break;

        /*
         * ipAddressPrefix(5)/RowPointer/ASN_OBJECT_ID/oid(oid)//L/A/w/e/r/D/h 
         */
    case COLUMN_IPADDRESSPREFIX:
        var->type = ASN_OBJECT_ID;
        rc = ipAddressPrefix_get(rowreq_ctx, (oid **) & var->val.string,
                                 &var->val_len);
        break;

        /*
         * ipAddressOrigin(6)/IpAddressOriginTC/ASN_INTEGER/long(u_long)//l/A/w/E/r/d/h 
         */
    case COLUMN_IPADDRESSORIGIN:
        var->val_len = sizeof(u_long);
        var->type = ASN_INTEGER;
        rc = ipAddressOrigin_get(rowreq_ctx, (u_long *) var->val.string);
        break;

        /*
         * ipAddressStatus(7)/IpAddressStatusTC/ASN_INTEGER/long(u_long)//l/A/W/E/r/D/h 
         */
    case COLUMN_IPADDRESSSTATUS:
        var->val_len = sizeof(u_long);
        var->type = ASN_INTEGER;
        rc = ipAddressStatus_get(rowreq_ctx, (u_long *) var->val.string);
        break;

        /*
         * ipAddressCreated(8)/TimeStamp/ASN_TIMETICKS/u_long(u_long)//l/A/w/e/r/d/h 
         */
    case COLUMN_IPADDRESSCREATED:
        var->val_len = sizeof(u_long);
        var->type = ASN_TIMETICKS;
        rc = ipAddressCreated_get(rowreq_ctx, (u_long *) var->val.string);
        break;

        /*
         * ipAddressLastChanged(9)/TimeStamp/ASN_TIMETICKS/u_long(u_long)//l/A/w/e/r/d/h 
         */
    case COLUMN_IPADDRESSLASTCHANGED:
        var->val_len = sizeof(u_long);
        var->type = ASN_TIMETICKS;
        rc = ipAddressLastChanged_get(rowreq_ctx,
                                      (u_long *) var->val.string);
        break;

        /*
         * ipAddressRowStatus(10)/RowStatus/ASN_INTEGER/long(u_long)//l/A/W/E/r/d/h 
         */
    case COLUMN_IPADDRESSROWSTATUS:
        var->val_len = sizeof(u_long);
        var->type = ASN_INTEGER;
        rc = ipAddressRowStatus_get(rowreq_ctx,
                                    (u_long *) var->val.string);
        break;

        /*
         * ipAddressStorageType(11)/StorageType/ASN_INTEGER/long(u_long)//l/A/W/E/r/D/h 
         */
    case COLUMN_IPADDRESSSTORAGETYPE:
        var->val_len = sizeof(u_long);
        var->type = ASN_INTEGER;
        rc = ipAddressStorageType_get(rowreq_ctx,
                                      (u_long *) var->val.string);
        break;

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

    return rc;
}                               /* _ipAddressTable_get_column */

int
_mfd_ipAddressTable_get_values(netsnmp_mib_handler *handler,
                               netsnmp_handler_registration *reginfo,
                               netsnmp_agent_request_info *agtreq_info,
                               netsnmp_request_info *requests)
{
    ipAddressTable_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:ipAddressTable:_mfd_ipAddressTable_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 = _ipAddressTable_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_ipAddressTable_get_values */

NETSNMP_STATIC_INLINE int
_ipAddressTable_check_indexes(ipAddressTable_rowreq_ctx * rowreq_ctx)
{
    int             rc = SNMPERR_SUCCESS;

    DEBUGMSGTL(("internal:ipAddressTable:_ipAddressTable_check_indexes",
                "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);


    /*
     * (INDEX) ipAddressAddrType(1)/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.ipAddressAddrType !=
            INETADDRESSTYPE_UNKNOWN)
        && (rowreq_ctx->tbl_idx.ipAddressAddrType != INETADDRESSTYPE_IPV4)
        && (rowreq_ctx->tbl_idx.ipAddressAddrType != INETADDRESSTYPE_IPV6)
        && (rowreq_ctx->tbl_idx.ipAddressAddrType != INETADDRESSTYPE_IPV4Z)
        && (rowreq_ctx->tbl_idx.ipAddressAddrType != INETADDRESSTYPE_IPV6Z)
        && (rowreq_ctx->tbl_idx.ipAddressAddrType != INETADDRESSTYPE_DNS)
        ) {
        rc = SNMP_ERR_WRONGVALUE;
    }
    if (MFD_SUCCESS != rc)
        return rc;
    rc = ipAddressAddrType_check_index(rowreq_ctx);
    if (MFD_SUCCESS != rc)
        return SNMP_ERR_NOCREATION;

    /*
     * (INDEX) ipAddressAddr(2)/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.ipAddressAddr_len < 0)
            || (rowreq_ctx->tbl_idx.ipAddressAddr_len > 255))
        ) {
        rc = SNMP_ERR_WRONGLENGTH;
    }
    if (MFD_SUCCESS != rc)
        return rc;
    rc = ipAddressAddr_check_index(rowreq_ctx);
    if (MFD_SUCCESS != rc)
        return SNMP_ERR_NOCREATION;

    /*
     * if individual parts look ok, check them as a whole
     */
    return ipAddressTable_validate_index(ipAddressTable_if_ctx.user_ctx,
                                         rowreq_ctx);
}                               /* _ipAddressTable_check_indexes */

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

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

    DEBUGMSGTL(("internal:ipAddressTable:_ipAddressTable_check_column",
                "called for %d\n", column));

    netsnmp_assert(NULL != rowreq_ctx);

    switch (column) {
        /*
         * (INDEX) ipAddressAddrType(1)/InetAddressType/ASN_INTEGER/long(u_long)//l/a/w/E/r/d/h 
         */
    case COLUMN_IPADDRESSADDRTYPE:
        rc = SNMP_ERR_NOTWRITABLE;      /* can not change index of active row */
        break;
        /*
         * (INDEX) ipAddressAddr(2)/InetAddress/ASN_OCTET_STR/char(char)//L/a/w/e/R/d/h 
         */
    case COLUMN_IPADDRESSADDR:
        rc = SNMP_ERR_NOTWRITABLE;      /* can not change index of active row */
        break;

        /*
         * ipAddressIfIndex(3)/InterfaceIndex/ASN_INTEGER/long(long)//l/A/W/e/R/d/H 
         */
    case COLUMN_IPADDRESSIFINDEX:
        rc = netsnmp_check_vb_type(var, ASN_INTEGER);
        /*
         * check defined range(s). 
         */
        if ((SNMPERR_SUCCESS == rc)
            && ((*var->val.integer < 1)
                || (*var->val.integer > 2147483647))
            ) {
            rc = SNMP_ERR_WRONGVALUE;
        }
        if (SNMPERR_SUCCESS != rc) {
            DEBUGMSGTL(("ipAddressTable:_ipAddressTable_check_column:ipAddressIfIndex", "varbind validation failed (eg bad type or size)\n"));
        } else {
            rc = ipAddressIfIndex_check_value(rowreq_ctx,
                                              *((long *) var->val.string));
            if ((MFD_SUCCESS != rc) && (MFD_NOT_VALID_EVER != rc)
                && (MFD_NOT_VALID_NOW != rc)) {
                snmp_log(LOG_ERR,
                         "bad rc %d from ipAddressIfIndex_check_value\n",
                         rc);
                rc = SNMP_ERR_GENERR;
            }
        }
        break;

        /*
         * ipAddressType(4)/INTEGER/ASN_INTEGER/long(u_long)//l/A/W/E/r/D/h 
         */
    case COLUMN_IPADDRESSTYPE:
        rc = netsnmp_check_vb_type(var, ASN_INTEGER);
        /*
         * check that the value is one of defined enums 
         */
        if ((SNMPERR_SUCCESS == rc)
            && (*var->val.integer != IPADDRESSTYPE_UNICAST)
            && (*var->val.integer != IPADDRESSTYPE_ANYCAST)
            && (*var->val.integer != IPADDRESSTYPE_BROADCAST)
            ) {
            rc = SNMP_ERR_WRONGVALUE;
        }
        if (SNMPERR_SUCCESS != rc) {
            DEBUGMSGTL(("ipAddressTable:_ipAddressTable_check_column:ipAddressType", "varbind validation failed (eg bad type or size)\n"));
        } else {
            rc = ipAddressType_check_value(rowreq_ctx,
                                           *((u_long *) var->val.string));
            if ((MFD_SUCCESS != rc) && (MFD_NOT_VALID_EVER != rc)
                && (MFD_NOT_VALID_NOW != rc)) {
                snmp_log(LOG_ERR,
                         "bad rc %d from ipAddressType_check_value\n", rc);
                rc = SNMP_ERR_GENERR;
            }
        }
        break;

        /*
         * ipAddressPrefix(5)/RowPointer/ASN_OBJECT_ID/oid(oid)//L/A/w/e/r/D/h 
         */
    case COLUMN_IPADDRESSPREFIX:
        rc = SNMP_ERR_NOTWRITABLE;
        break;

        /*
         * ipAddressOrigin(6)/IpAddressOriginTC/ASN_INTEGER/long(u_long)//l/A/w/E/r/d/h 
         */
    case COLUMN_IPADDRESSORIGIN:
        rc = SNMP_ERR_NOTWRITABLE;
        break;

        /*
         * ipAddressStatus(7)/IpAddressStatusTC/ASN_INTEGER/long(u_long)//l/A/W/E/r/D/h 
         */
    case COLUMN_IPADDRESSSTATUS:
        rc = netsnmp_check_vb_type(var, ASN_INTEGER);
        /*
         * check that the value is one of defined enums 
         */
        if ((SNMPERR_SUCCESS == rc)
            && (*var->val.integer != IPADDRESSSTATUSTC_PREFERRED)
            && (*var->val.integer != IPADDRESSSTATUSTC_INVALID)
            && (*var->val.integer != IPADDRESSSTATUSTC_INACCESSIBLE)
            && (*var->val.integer != IPADDRESSSTATUSTC_UNKNOWN)
            && (*var->val.integer != IPADDRESSSTATUSTC_TENTATIVE)
            && (*var->val.integer != IPADDRESSSTATUSTC_DUPLICATE)
            ) {
            rc = SNMP_ERR_WRONGVALUE;
        }
        if (SNMPERR_SUCCESS != rc) {
            DEBUGMSGTL(("ipAddressTable:_ipAddressTable_check_column:ipAddressStatus", "varbind validation failed (eg bad type or size)\n"));
        } else {
            rc = ipAddressStatus_check_value(rowreq_ctx,
                                             *((u_long *) var->val.
                                               string));
            if ((MFD_SUCCESS != rc) && (MFD_NOT_VALID_EVER != rc)
                && (MFD_NOT_VALID_NOW != rc)) {
                snmp_log(LOG_ERR,
                         "bad rc %d from ipAddressStatus_check_value\n",
                         rc);
                rc = SNMP_ERR_GENERR;
            }
        }
        break;

        /*
         * ipAddressCreated(8)/TimeStamp/ASN_TIMETICKS/u_long(u_long)//l/A/w/e/r/d/h 
         */
    case COLUMN_IPADDRESSCREATED:
        rc = SNMP_ERR_NOTWRITABLE;
        break;