tcpconnectiontable_interface.c

开发snmp的开发包有两个开放的SNMP开发库

            if ((MFD_SUCCESS != rc) && (MFD_NOT_VALID_EVER != rc)
                && (MFD_NOT_VALID_NOW != rc)) {
                snmp_log(LOG_ERR,
                         "bad rc %d from tcpConnectionState_check_value\n",
                         rc);
                rc = SNMP_ERR_GENERR;
            }
        }
        break;

        /*
         * tcpConnectionProcess(8)/UNSIGNED32/ASN_UNSIGNED/u_long(u_long)//l/A/w/e/r/d/h 
         */
    case COLUMN_TCPCONNECTIONPROCESS:
        rc = SNMP_ERR_NOTWRITABLE;
        break;

    default:   /** We shouldn't get here */
        rc = SNMP_ERR_GENERR;
        snmp_log(LOG_ERR,
                 "unknown column %d in _tcpConnectionTable_check_column\n",
                 column);
    }

    return rc;
}                               /* _tcpConnectionTable_check_column */

int
_mfd_tcpConnectionTable_check_objects(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;
    int             rc;

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

    netsnmp_assert(NULL != rowreq_ctx);

    for (; requests; requests = requests->next) {

        /*
         * get column number from table request info, and check that column
         */
        tri = netsnmp_extract_table_info(requests);
        if (NULL == tri)
            continue;

        rc = _tcpConnectionTable_check_column(rowreq_ctx,
                                              requests->requestvb,
                                              tri->colnum);
        if (rc) {
            netsnmp_request_set_error(requests, SNMP_VALIDATE_ERR(rc));
            break;
        }

    }                           /* for results */

    return SNMP_ERR_NOERROR;
}                               /* _mfd_tcpConnectionTable_check_objects */


/*----------------------------------------------------------------------
 *
 * SET: check dependencies
 *
 *---------------------------------------------------------------------*/
/*
 * @internal
 * Check dependencies wrapper
 */
static int
_mfd_tcpConnectionTable_check_dependencies(netsnmp_mib_handler *handler, netsnmp_handler_registration
                                           *reginfo, netsnmp_agent_request_info
                                           *agtreq_info,
                                           netsnmp_request_info *requests)
{
    int             rc;
    tcpConnectionTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);
    DEBUGMSGTL(("internal:tcpConnectionTable:_mfd_tcpConnectionTable_check_dependencies", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

    rc = tcpConnectionTable_check_dependencies(rowreq_ctx);
    if (rc) {
        DEBUGMSGTL(("tcpConnectionTable:mfd", "error %d from "
                    "tcpConnectionTable_check_dependencies\n", rc));
        netsnmp_request_set_error_all(requests, SNMP_VALIDATE_ERR(rc));
    }

    return SNMP_ERR_NOERROR;
}                               /* _mfd_tcpConnectionTable_check_dependencies */

/*----------------------------------------------------------------------
 *
 * SET: Undo setup
 *
 *---------------------------------------------------------------------*/
/*
 * @internal
 * Set the value for a particular column
 */
NETSNMP_STATIC_INLINE int
_tcpConnectionTable_undo_setup_column(tcpConnectionTable_rowreq_ctx *
                                      rowreq_ctx, int column)
{
    int             rc = SNMPERR_SUCCESS;

    DEBUGMSGTL(("internal:tcpConnectionTable:_tcpConnectionTable_undo_setup_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:
        rowreq_ctx->column_set_flags |= COLUMN_TCPCONNECTIONSTATE_FLAG;
        rc = tcpConnectionState_undo_setup(rowreq_ctx);
        break;

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

    return rc;
}                               /* _tcpConnectionTable_undo_setup_column */


/**
 * @internal
 * undo setup
 */
int
_mfd_tcpConnectionTable_undo_setup(netsnmp_mib_handler *handler,
                                   netsnmp_handler_registration *reginfo,
                                   netsnmp_agent_request_info *agtreq_info,
                                   netsnmp_request_info *requests)
{
    int             rc;
    tcpConnectionTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);

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

    netsnmp_assert(NULL != rowreq_ctx);

    /*
     * allocate undo context
     */
    rowreq_ctx->undo = tcpConnectionTable_allocate_data();
    if (NULL == rowreq_ctx->undo) {
        /** msg already logged */
        netsnmp_request_set_error_all(requests,
                                      SNMP_ERR_RESOURCEUNAVAILABLE);
        return SNMP_ERR_NOERROR;
    }

    /*
     * row undo setup
     */
    rowreq_ctx->column_set_flags = 0;
    rc = tcpConnectionTable_undo_setup(rowreq_ctx);
    if (MFD_SUCCESS != rc) {
        DEBUGMSGTL(("tcpConnectionTable:mfd", "error %d from "
                    "tcpConnectionTable_undo_setup\n", rc));
        netsnmp_request_set_error_all(requests, SNMP_VALIDATE_ERR(rc));
    } else {
        /*
         * column undo setup
         */
        netsnmp_table_request_info *tri;
        for (; requests; requests = requests->next) {
            /*
             * set column data
             */
            tri = netsnmp_extract_table_info(requests);
            if (NULL == tri)
                continue;

            rc = _tcpConnectionTable_undo_setup_column(rowreq_ctx,
                                                       tri->colnum);
            if (MFD_SUCCESS != rc) {
                DEBUGMSGTL(("tcpConnectionTable:mfd", "error %d from "
                            "tcpConnectionTable_undo_setup_column\n", rc));
                netsnmp_set_request_error(agtreq_info, requests,
                                          SNMP_VALIDATE_ERR(rc));
            }
        }                       /* for results */
    }

    return SNMP_ERR_NOERROR;
}                               /* _mfd_tcpConnectionTable_undo_setup */

/**
 * @internal
 * undo setup
 */
int
_mfd_tcpConnectionTable_undo_cleanup(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;

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

    /*
     * failed row create in early stages has no rowreq_ctx
     */
    if (NULL == rowreq_ctx)
        return MFD_SUCCESS;

    /*
     * call user cleanup
     */
    rc = tcpConnectionTable_undo_cleanup(rowreq_ctx);
    if (MFD_SUCCESS != rc) {
        /*
         * nothing we can do about it but log it
         */
        DEBUGMSGTL(("tcpConnectionTable:mfd", "error %d from "
                    "tcpConnectionTable_undo_cleanup\n", rc));
    }

    /*
     * release undo context, if needed
     */
    if (rowreq_ctx->undo) {
        tcpConnectionTable_release_data(rowreq_ctx->undo);
        rowreq_ctx->undo = NULL;
    }


    return SNMP_ERR_NOERROR;
}                               /* _mfd_tcpConnectionTable_undo_cleanup */

/*----------------------------------------------------------------------
 *
 * SET: Set values
 *
 *---------------------------------------------------------------------*/
/*
 * @internal
 * Set the value for a particular column
 */
NETSNMP_STATIC_INLINE int
_tcpConnectionTable_set_column(tcpConnectionTable_rowreq_ctx * rowreq_ctx,
                               netsnmp_variable_list * var, int column)
{
    int             rc = SNMPERR_SUCCESS;

    DEBUGMSGTL(("internal:tcpConnectionTable:_tcpConnectionTable_set_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:
        rowreq_ctx->column_set_flags |= COLUMN_TCPCONNECTIONSTATE_FLAG;
        rc = tcpConnectionState_set(rowreq_ctx,
                                    *((u_long *) var->val.string));
        break;

    default:
        snmp_log(LOG_ERR,
                 "unknown column %d in _tcpConnectionTable_set_column\n",
                 column);
        rc = SNMP_ERR_GENERR;
        break;
    }

    return rc;
}                               /* _tcpConnectionTable_set_column */

int
_mfd_tcpConnectionTable_set_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;
    int             rc = SNMP_ERR_NOERROR;

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

    netsnmp_assert(NULL != rowreq_ctx);

    rowreq_ctx->column_set_flags = 0;
    for (; requests; requests = requests->next) {
        /*
         * set column data
         */
        tri = netsnmp_extract_table_info(requests);
        if (NULL == tri)
            continue;

        rc = _tcpConnectionTable_set_column(rowreq_ctx,
                                            requests->requestvb,
                                            tri->colnum);
        if (MFD_SUCCESS != rc) {
            DEBUGMSGTL(("tcpConnectionTable:mfd", "error %d from "
                        "tcpConnectionTable_set_column\n", rc));
            netsnmp_set_request_error(agtreq_info, requests,
                                      SNMP_VALIDATE_ERR(rc));
        }
    }                           /* for results */

    return SNMP_ERR_NOERROR;
}                               /* _mfd_tcpConnectionTable_set_values */

/*----------------------------------------------------------------------
 *
 * SET: commit
 *
 *---------------------------------------------------------------------*/
/**
 * @internal
 * commit the values
 */
int
_mfd_tcpConnectionTable_commit(netsnmp_mib_handler *handler,
                               netsnmp_handler_registration *reginfo,
                               netsnmp_agent_request_info *agtreq_info,
                               netsnmp_request_info *requests)
{
    int             rc;
    tcpConnectionTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);

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

    netsnmp_assert(NULL != rowreq_ctx);

    rc = tcpConnectionTable_commit(rowreq_ctx);
    if (MFD_SUCCESS != rc) {
        DEBUGMSGTL(("tcpConnectionTable:mfd", "error %d from "
                    "tcpConnectionTable_commit\n", rc));
        netsnmp_request_set_error_all(requests, SNMP_VALIDATE_ERR(rc));
    }

    if (rowreq_ctx->rowreq_flags & MFD_ROW_DIRTY) {