tcpconnectiontable_interface.c

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    if (rowreq_ctx->undo)
        tcpConnectionTable_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);
}                               /* tcpConnectionTable_release_rowreq_ctx */

/**
 * @internal
 * wrapper
 */
static int
_mfd_tcpConnectionTable_pre_request(netsnmp_mib_handler *handler,
                                    netsnmp_handler_registration *reginfo,
                                    netsnmp_agent_request_info
                                    *agtreq_info,
                                    netsnmp_request_info *requests)
{
    int             rc;

    DEBUGMSGTL(("internal:tcpConnectionTable:_mfd_tcpConnectionTable_pre_request", "called\n"));

    if (1 != netsnmp_row_merge_status_first(reginfo, agtreq_info)) {
        DEBUGMSGTL(("internal:tcpConnectionTable",
                    "skipping additional pre_request\n"));
        return SNMP_ERR_NOERROR;
    }

    rc = tcpConnectionTable_pre_request(tcpConnectionTable_if_ctx.
                                        user_ctx);
    if (MFD_SUCCESS != rc) {
        /*
         * nothing we can do about it but log it
         */
        DEBUGMSGTL(("tcpConnectionTable", "error %d from "
                    "tcpConnectionTable_pre_request\n", rc));
        netsnmp_request_set_error_all(requests, SNMP_VALIDATE_ERR(rc));
    }

    return SNMP_ERR_NOERROR;
}                               /* _mfd_tcpConnectionTable_pre_request */

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

    DEBUGMSGTL(("internal:tcpConnectionTable:_mfd_tcpConnectionTable_post_request", "called\n"));

    /*
     * release row context, if deleted
     */
    if (rowreq_ctx && (rowreq_ctx->rowreq_flags & MFD_ROW_DELETED))
        tcpConnectionTable_release_rowreq_ctx(rowreq_ctx);

    /*
     * wait for last call before calling user
     */
    if (1 != netsnmp_row_merge_status_last(reginfo, agtreq_info)) {
        DEBUGMSGTL(("internal:tcpConnectionTable",
                    "waiting for last post_request\n"));
        return SNMP_ERR_NOERROR;
    }

    packet_rc = netsnmp_check_all_requests_error(agtreq_info->asp, 0);
    if ((MFD_SUCCESS != packet_rc) && tcpConnectionTable_dirty_get()) {
        /*
         * we shouldn't get here. the undo steps should also clear
         * the dirty flags.
         */
        snmp_log(LOG_WARNING,
                 "tcpConnectionTable dirty flag set in post_request "
                 "but status != SUCCESS.\n");
    }

    rc = tcpConnectionTable_post_request(tcpConnectionTable_if_ctx.
                                         user_ctx, packet_rc);
    if (MFD_SUCCESS != rc) {
        /*
         * nothing we can do about it but log it
         */
        DEBUGMSGTL(("tcpConnectionTable", "error %d from "
                    "tcpConnectionTable_post_request\n", rc));
    }

    return SNMP_ERR_NOERROR;
}                               /* _mfd_tcpConnectionTable_post_request */

/**
 * @internal
 * wrapper
 */
static int
_mfd_tcpConnectionTable_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;
    tcpConnectionTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);

    DEBUGMSGTL(("internal:tcpConnectionTable:_mfd_tcpConnectionTable_object_lookup", "called\n"));

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

    if (NULL == rowreq_ctx) {
        rc = SNMP_ERR_NOCREATION;
    }

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

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

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

    DEBUGMSGTL(("internal:tcpConnectionTable:_mfd_tcpConnectionTable_get_column", "called for %d\n", column));


    netsnmp_assert(NULL != rowreq_ctx);

    switch (column) {

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

        /*
         * tcpConnectionProcess(8)/UNSIGNED32/ASN_UNSIGNED/u_long(u_long)//l/A/w/e/r/d/h 
         */
    case COLUMN_TCPCONNECTIONPROCESS:
        var->val_len = sizeof(u_long);
        var->type = ASN_UNSIGNED;
        rc = tcpConnectionProcess_get(rowreq_ctx,
                                      (u_long *) var->val.string);
        break;

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

    return rc;
}                               /* _tcpConnectionTable_get_column */

int
_mfd_tcpConnectionTable_get_values(netsnmp_mib_handler *handler,
                                   netsnmp_handler_registration *reginfo,
                                   netsnmp_agent_request_info *agtreq_info,
                                   netsnmp_request_info *requests)
{
    tcpConnectionTable_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:tcpConnectionTable:_mfd_tcpConnectionTable_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 = _tcpConnectionTable_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_tcpConnectionTable_get_values */


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

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

    DEBUGMSGTL(("internal:tcpConnectionTable:_tcpConnectionTable_check_column", "called for %d\n", column));

    netsnmp_assert(NULL != rowreq_ctx);

    switch (column) {
        /*
         * (INDEX) tcpConnectionLocalAddressType(1)/InetAddressType/ASN_INTEGER/long(u_long)//l/a/w/E/r/d/h 
         */
    case COLUMN_TCPCONNECTIONLOCALADDRESSTYPE:
        rc = SNMP_ERR_NOTWRITABLE;      /* can not change index of active row */
        break;
        /*
         * (INDEX) tcpConnectionLocalAddress(2)/InetAddress/ASN_OCTET_STR/char(char)//L/a/w/e/R/d/h 
         */
    case COLUMN_TCPCONNECTIONLOCALADDRESS:
        rc = SNMP_ERR_NOTWRITABLE;      /* can not change index of active row */
        break;
        /*
         * (INDEX) tcpConnectionLocalPort(3)/InetPortNumber/ASN_UNSIGNED/u_long(u_long)//l/a/w/e/R/d/H 
         */
    case COLUMN_TCPCONNECTIONLOCALPORT:
        rc = SNMP_ERR_NOTWRITABLE;      /* can not change index of active row */
        break;
        /*
         * (INDEX) tcpConnectionRemAddressType(4)/InetAddressType/ASN_INTEGER/long(u_long)//l/a/w/E/r/d/h 
         */
    case COLUMN_TCPCONNECTIONREMADDRESSTYPE:
        rc = SNMP_ERR_NOTWRITABLE;      /* can not change index of active row */
        break;
        /*
         * (INDEX) tcpConnectionRemAddress(5)/InetAddress/ASN_OCTET_STR/char(char)//L/a/w/e/R/d/h 
         */
    case COLUMN_TCPCONNECTIONREMADDRESS:
        rc = SNMP_ERR_NOTWRITABLE;      /* can not change index of active row */
        break;
        /*
         * (INDEX) tcpConnectionRemPort(6)/InetPortNumber/ASN_UNSIGNED/u_long(u_long)//l/a/w/e/R/d/H 
         */
    case COLUMN_TCPCONNECTIONREMPORT:
        rc = SNMP_ERR_NOTWRITABLE;      /* can not change index of active row */
        break;

        /*
         * tcpConnectionState(7)/INTEGER/ASN_INTEGER/long(u_long)//l/A/W/E/r/d/h 
         */
    case COLUMN_TCPCONNECTIONSTATE:
        rc = netsnmp_check_vb_type(var, ASN_INTEGER);
        /*
         * check that the value is one of defined enums 
         */
        if ((SNMPERR_SUCCESS == rc)
            && (*var->val.integer != TCPCONNECTIONSTATE_CLOSED)
            && (*var->val.integer != TCPCONNECTIONSTATE_LISTEN)
            && (*var->val.integer != TCPCONNECTIONSTATE_SYNSENT)
            && (*var->val.integer != TCPCONNECTIONSTATE_SYNRECEIVED)
            && (*var->val.integer != TCPCONNECTIONSTATE_ESTABLISHED)
            && (*var->val.integer != TCPCONNECTIONSTATE_FINWAIT1)
            && (*var->val.integer != TCPCONNECTIONSTATE_FINWAIT2)
            && (*var->val.integer != TCPCONNECTIONSTATE_CLOSEWAIT)
            && (*var->val.integer != TCPCONNECTIONSTATE_LASTACK)
            && (*var->val.integer != TCPCONNECTIONSTATE_CLOSING)
            && (*var->val.integer != TCPCONNECTIONSTATE_TIMEWAIT)
            && (*var->val.integer != TCPCONNECTIONSTATE_DELETETCB)
            ) {
            rc = SNMP_ERR_WRONGVALUE;
        }
        if (SNMPERR_SUCCESS != rc) {
            DEBUGMSGTL(("tcpConnectionTable:_tcpConnectionTable_check_column:tcpConnectionState", "varbind validation failed (eg bad type or size)\n"));
        } else {
            rc = tcpConnectionState_check_value(rowreq_ctx,
                                                *((u_long *) var->val.
                                                  string));