ifxtable_interface.c

snmp的源代码,已经在我的ubuntu下编译通过

             * set column data
             */
            tri = netsnmp_extract_table_info(requests);
            if (NULL == tri)
                continue;

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

    return SNMP_ERR_NOERROR;
}                               /* _mfd_ifXTable_undo_setup */

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

    DEBUGMSGTL(("internal:ifXTable:_mfd_ifXTable_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 = ifXTable_undo_cleanup(rowreq_ctx);
    if (MFD_SUCCESS != rc) {
        /*
         * nothing we can do about it but log it
         */
        DEBUGMSGTL(("verbose:ifXTable:mfd", "error %d from "
                    "ifXTable_undo_cleanup\n", rc));
    }

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

    /*
     * clear set flags
     */
    rowreq_ctx->column_set_flags = 0;

    return SNMP_ERR_NOERROR;
}                               /* _mfd_ifXTable_undo_cleanup */

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

    DEBUGMSGTL(("internal:ifXTable:_ifXTable_set_column", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

    switch (column) {

        /*
         * ifLinkUpDownTrapEnable(14)/INTEGER/ASN_INTEGER/long(u_long)//l/A/W/E/r/d/h 
         */
    case COLUMN_IFLINKUPDOWNTRAPENABLE:
        if (var->val_len != sizeof(u_long)) {
            rc = SNMP_ERR_WRONGLENGTH;
            snmp_log(LOG_ERR,
                     "varbind size of %d does not match expected size %d\n",
                     var->val_len, sizeof(u_long));
            break;
        }
        rowreq_ctx->column_set_flags |= FLAG_IFLINKUPDOWNTRAPENABLE;
        rc = ifLinkUpDownTrapEnable_set(rowreq_ctx,
                                        *((u_long *) var->val.string));
        break;

        /*
         * ifPromiscuousMode(16)/TruthValue/ASN_INTEGER/long(u_long)//l/A/W/E/r/d/h 
         */
    case COLUMN_IFPROMISCUOUSMODE:
        if (var->val_len != sizeof(u_long)) {
            rc = SNMP_ERR_WRONGLENGTH;
            snmp_log(LOG_ERR,
                     "varbind size of %d does not match expected size %d\n",
                     var->val_len, sizeof(u_long));
            break;
        }
        rowreq_ctx->column_set_flags |= FLAG_IFPROMISCUOUSMODE;
        rc = ifPromiscuousMode_set(rowreq_ctx,
                                   *((u_long *) var->val.string));
        break;

        /*
         * ifAlias(18)/DisplayString/ASN_OCTET_STR/char(char)//L/A/W/e/R/d/H 
         */
    case COLUMN_IFALIAS:
        rowreq_ctx->column_set_flags |= FLAG_IFALIAS;
        rc = ifAlias_set(rowreq_ctx, (char *) var->val.string,
                         var->val_len);
        break;

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

    return rc;
}                               /* _ifXTable_set_column */

int
_mfd_ifXTable_set_values(netsnmp_mib_handler *handler,
                         netsnmp_handler_registration *reginfo,
                         netsnmp_agent_request_info *agtreq_info,
                         netsnmp_request_info *requests)
{
    ifXTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);
    netsnmp_table_request_info *tri;
    int             rc = SNMP_ERR_NOERROR;

    DEBUGMSGTL(("internal:ifXTable:_mfd_ifXTable_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 = _ifXTable_set_column(rowreq_ctx,
                                  requests->requestvb, tri->colnum);
        if (MFD_SUCCESS != rc) {
            DEBUGMSGTL(("verbose:ifXTable:mfd", "error %d from "
                        "ifXTable_set_column\n", rc));
            netsnmp_set_request_error(agtreq_info, requests,
                                      SNMP_VALIDATE_ERR(rc));
        }
    }                           /* for results */

    return SNMP_ERR_NOERROR;
}                               /* _mfd_ifXTable_set_values */

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

    DEBUGMSGTL(("internal:ifXTable:_mfd_ifXTable_commit", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

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

    return SNMP_ERR_NOERROR;
}

int
_mfd_ifXTable_undo_commit(netsnmp_mib_handler *handler,
                          netsnmp_handler_registration *reginfo,
                          netsnmp_agent_request_info *agtreq_info,
                          netsnmp_request_info *requests)
{
    int             rc;
    ifXTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);

    DEBUGMSGTL(("internal:ifXTable:_mfd_ifXTable_undo_commit",
                "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

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

    return SNMP_ERR_NOERROR;
}                               /* _mfd_ifXTable_commit */

/*----------------------------------------------------------------------
 *
 * SET: Undo
 *
 *---------------------------------------------------------------------*/
/**
 * @internal
 * undo the value for a particular column
 */
NETSNMP_STATIC_INLINE int
_ifXTable_undo_column(ifXTable_rowreq_ctx * rowreq_ctx,
                      netsnmp_variable_list * var, int column)
{
    int             rc = SNMPERR_SUCCESS;

    DEBUGMSGTL(("internal:ifXTable:_ifXTable_undo_column", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

    switch (column) {

        /*
         * ifLinkUpDownTrapEnable(14)/INTEGER/ASN_INTEGER/long(u_long)//l/A/W/E/r/d/h 
         */
    case COLUMN_IFLINKUPDOWNTRAPENABLE:
        rc = ifLinkUpDownTrapEnable_undo(rowreq_ctx);
        break;

        /*
         * ifPromiscuousMode(16)/TruthValue/ASN_INTEGER/long(u_long)//l/A/W/E/r/d/h 
         */
    case COLUMN_IFPROMISCUOUSMODE:
        rc = ifPromiscuousMode_undo(rowreq_ctx);
        break;

        /*
         * ifAlias(18)/DisplayString/ASN_OCTET_STR/char(char)//L/A/W/e/R/d/H 
         */
    case COLUMN_IFALIAS:
        rc = ifAlias_undo(rowreq_ctx);
        break;

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

    return rc;
}                               /* _ifXTable_undo_column */

int
_mfd_ifXTable_undo_values(netsnmp_mib_handler *handler,
                          netsnmp_handler_registration *reginfo,
                          netsnmp_agent_request_info *agtreq_info,
                          netsnmp_request_info *requests)
{
    int             rc;
    ifXTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);
    netsnmp_table_request_info *tri;

    DEBUGMSGTL(("internal:ifXTable:_mfd_ifXTable_undo_values",
                "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

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

        rc = _ifXTable_undo_column(rowreq_ctx, requests->requestvb,
                                   tri->colnum);
        if (MFD_SUCCESS != rc) {
            /*
             * nothing we can do about it but log it
             */
            DEBUGMSGTL(("verbose:ifXTable:mfd", "error %d from "
                        "ifXTable_undo_column\n", rc));
        }
    }                           /* for results */

    return SNMP_ERR_NOERROR;
}                               /* _mfd_ifXTable_undo_values */

/***********************************************************************
 *
 * DATA ACCESS
 *
 ***********************************************************************/
/**
 * @internal
 * initialize the iterator container with functions or wrappers
 */
void
_ifXTable_container_init(ifXTable_interface_ctx * if_ctx)
{
    DEBUGMSGTL(("internal:ifXTable:_ifXTable_container_init", "called\n"));

    /*
     * set up the cache
     *
     * special case: sharing a cache
     */
    if_ctx->cache =
        netsnmp_cache_find_by_oid(ifTable_oid, ifTable_oid_size);
    if (NULL != if_ctx->cache) {
        if_ctx->container = (netsnmp_container *) if_ctx->cache->magic;
        return;
    } else {
        snmp_log(LOG_ERR, "error finding ifTable cache\n");
    }
}

/*
 * allow direct access to container.
 */
netsnmp_container *
_ifXTable_container_get(void)
{
    return ifXTable_if_ctx.container;
}