reactos/dll/win32/iphlpapi/ipstats_reactos.c

/* Copyright (C) 2003 Art Yerkes
 * A reimplementation of ifenum.c by Juan Lang
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * This file is implemented on the IOCTL_TCP_QUERY_INFORMATION_EX ioctl on
 * tcpip.sys
 */

#include "iphlpapi_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(iphlpapi);

#ifndef TCPS_ESTABLISHED
# define TCPS_ESTABLISHED TCP_ESTABLISHED
#endif
#ifndef TCPS_SYN_SENT
# define TCPS_SYN_SENT TCP_SYN_SENT
#endif
#ifndef TCPS_SYN_RECEIVED
# define TCPS_SYN_RECEIVED TCP_SYN_RECV
#endif
#ifndef TCPS_FIN_WAIT_1
# define TCPS_FIN_WAIT_1 TCP_FIN_WAIT1
#endif
#ifndef TCPS_FIN_WAIT_2
# define TCPS_FIN_WAIT_2 TCP_FIN_WAIT2
#endif
#ifndef TCPS_TIME_WAIT
# define TCPS_TIME_WAIT TCP_TIME_WAIT
#endif
#ifndef TCPS_CLOSED
# define TCPS_CLOSED TCP_CLOSE
#endif
#ifndef TCPS_CLOSE_WAIT
# define TCPS_CLOSE_WAIT TCP_CLOSE_WAIT
#endif
#ifndef TCPS_LAST_ACK
# define TCPS_LAST_ACK TCP_LAST_ACK
#endif
#ifndef TCPS_LISTEN
# define TCPS_LISTEN TCP_LISTEN
#endif
#ifndef TCPS_CLOSING
# define TCPS_CLOSING TCP_CLOSING
#endif

BOOL isIpEntity( HANDLE tcpFile, TDIEntityID *ent ) {
    return (ent->tei_entity == CL_NL_ENTITY ||
            ent->tei_entity == CO_NL_ENTITY);
}

NTSTATUS getNthIpEntity( HANDLE tcpFile, DWORD index, TDIEntityID *ent ) {
    DWORD numEntities = 0;
    DWORD numRoutes = 0;
    TDIEntityID *entitySet = 0;
    NTSTATUS status = tdiGetEntityIDSet( tcpFile, &entitySet, &numEntities );
    int i;

    if( !NT_SUCCESS(status) )
        return status;

    for( i = 0; i < numEntities; i++ ) {
        if( isIpEntity( tcpFile, &entitySet[i] ) ) {
            if( numRoutes == index ) break;
            else numRoutes++;
        }
    }

    if( numRoutes == index && i < numEntities ) {
        memcpy( ent, &entitySet[i], sizeof(*ent) );
        tdiFreeThingSet( entitySet );
        return STATUS_SUCCESS;
    } else {
        tdiFreeThingSet( entitySet );
        return STATUS_UNSUCCESSFUL;
    }
}

NTSTATUS tdiGetMibForIpEntity
( HANDLE tcpFile, TDIEntityID *ent, IPSNMPInfo *entry ) {
    TCP_REQUEST_QUERY_INFORMATION_EX req = TCP_REQUEST_QUERY_INFORMATION_INIT;
    NTSTATUS status = STATUS_SUCCESS;
    DWORD returnSize;

    memset( entry, 0, sizeof( *entry ) );

    req.ID.toi_class                = INFO_CLASS_PROTOCOL;
    req.ID.toi_type                 = INFO_TYPE_PROVIDER;
    req.ID.toi_id                   = IP_MIB_STATS_ID;
    req.ID.toi_entity               = *ent;

    status = DeviceIoControl(tcpFile,
                             IOCTL_TCP_QUERY_INFORMATION_EX,
                             &req,
                             sizeof(req),
                             entry,
                             sizeof(*entry),
                             &returnSize,
                             NULL);

    return status;
}

NTSTATUS tdiGetRoutesForIpEntity
( HANDLE tcpFile, TDIEntityID *ent, IPRouteEntry **routes, PDWORD numRoutes ) {
    NTSTATUS status = STATUS_SUCCESS;

    status = tdiGetSetOfThings(tcpFile,
                               INFO_CLASS_PROTOCOL,
                               INFO_TYPE_PROVIDER,
                               IP_MIB_ARPTABLE_ENTRY_ID,
                               CL_NL_ENTITY,
                               ent->tei_instance,
                               0,
                               sizeof(IPRouteEntry),
                               (PVOID *)routes,
                               numRoutes);

    return status;
}

NTSTATUS tdiGetIpAddrsForIpEntity
( HANDLE tcpFile, TDIEntityID *ent, IPAddrEntry **addrs, PDWORD numAddrs ) {
    NTSTATUS status;

    status = tdiGetSetOfThings(tcpFile,
                               INFO_CLASS_PROTOCOL,
                               INFO_TYPE_PROVIDER,
                               IP_MIB_ADDRTABLE_ENTRY_ID,
                               CL_NL_ENTITY,
                               ent->tei_instance,
                               0,
                               sizeof(IPAddrEntry),
                               (PVOID *)addrs,
                               numAddrs);

    return status;
}

DWORD getInterfaceStatsByName(const char *name, PMIB_IFROW entry)
{
  if (!name)
    return ERROR_INVALID_PARAMETER;
  if (!entry)
    return ERROR_INVALID_PARAMETER;

  return NO_ERROR;
}

DWORD getInterfaceStatsByIndex(DWORD index, PMIB_IFROW entry)
{
    return ERROR_INVALID_PARAMETER;
}

DWORD getICMPStats(MIB_ICMP *stats)
{
  FILE *fp;

  if (!stats)
    return ERROR_INVALID_PARAMETER;

  memset(stats, 0, sizeof(MIB_ICMP));
  /* get most of these stats from /proc/net/snmp, no error if can't */
  fp = fopen("/proc/net/snmp", "r");
  if (fp) {
    const char hdr[] = "Icmp:";
    char buf[512] = { 0 }, *ptr;

    do {
      ptr = fgets(buf, sizeof(buf), fp);
    } while (ptr && strncasecmp(buf, hdr, sizeof(hdr) - 1));
    if (ptr) {
      /* last line was a header, get another */
      ptr = fgets(buf, sizeof(buf), fp);
      if (ptr && strncasecmp(buf, hdr, sizeof(hdr) - 1) == 0) {
        char *endPtr;

        ptr += sizeof(hdr);
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwMsgs = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwErrors = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwDestUnreachs = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwTimeExcds = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwParmProbs = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwSrcQuenchs = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwRedirects = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwEchoReps = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwTimestamps = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwTimestampReps = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwAddrMasks = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpInStats.dwAddrMaskReps = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwMsgs = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwErrors = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwDestUnreachs = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwTimeExcds = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwParmProbs = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwSrcQuenchs = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwRedirects = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwEchoReps = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwTimestamps = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwTimestampReps = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwAddrMasks = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
        if (ptr && *ptr) {
          stats->stats.icmpOutStats.dwAddrMaskReps = strtoul(ptr, &endPtr, 10);
          ptr = endPtr;
        }
      }
    }
    fclose(fp);
  }
  return NO_ERROR;
}

DWORD getIPStats(PMIB_IPSTATS stats, DWORD family)
{
  if (!stats)
    return ERROR_INVALID_PARAMETER;
  return NO_ERROR;
}

DWORD getTCPStats(MIB_TCPSTATS *stats, DWORD family)
{
  if (!stats)
    return ERROR_INVALID_PARAMETER;
  return NO_ERROR;
}

DWORD getUDPStats(MIB_UDPSTATS *stats, DWORD family)
{
  if (!stats)
    return ERROR_INVALID_PARAMETER;
  return NO_ERROR;
}

DWORD getNumRoutes(void)
{
    DWORD numEntities, numRoutes = 0;
    TDIEntityID *entitySet;
    HANDLE tcpFile;
    int i;
    NTSTATUS status;

    status = openTcpFile(&tcpFile, FILE_READ_DATA);
    if (!NT_SUCCESS(status))
        return 0;

    status = tdiGetEntityIDSet(tcpFile, &entitySet, &numEntities);
    if (!NT_SUCCESS(status)) {
        closeTcpFile( tcpFile );
        return 0;
    }

    for (i = 0; i < numEntities; i++) {
        if (isIpEntity(tcpFile, &entitySet[i])) {
            IPSNMPInfo isnmp;
            memset(&isnmp, 0, sizeof(isnmp));
            status = tdiGetMibForIpEntity(tcpFile, &entitySet[i], &isnmp);
            if (!NT_SUCCESS(status)) {
                numRoutes = 0;
                break;
            }
            numRoutes += isnmp.ipsi_numroutes;
        }
    }

    tdiFreeThingSet(entitySet);
    closeTcpFile(tcpFile);

    return numRoutes;
}

RouteTable *getRouteTable(void)
{
    RouteTable *out_route_table;
    DWORD numRoutes = getNumRoutes(), routesAdded = 0;
    TDIEntityID ent;
    HANDLE tcpFile;
    NTSTATUS status = openTcpFile(&tcpFile, FILE_READ_DATA);
    int i;

    if (!NT_SUCCESS(status))
        return 0;

    out_route_table = HeapAlloc(GetProcessHeap(), 0,
                                sizeof(RouteTable) +
                                (sizeof(RouteEntry) * (numRoutes - 1)));
    if (!out_route_table) {
        closeTcpFile(tcpFile);
        return NULL;
    }

    out_route_table->numRoutes = numRoutes;

    for (i = 0; routesAdded < out_route_table->numRoutes; i++) {
        int j;
        IPRouteEntry *route_set;

        getNthIpEntity(tcpFile, i, &ent);

        tdiGetRoutesForIpEntity(tcpFile, &ent, &route_set, &numRoutes);
        if (!route_set) {
            closeTcpFile(tcpFile);
            HeapFree(GetProcessHeap(), 0, out_route_table);
            return 0;
        }

        for (j = 0; j < numRoutes; j++) {
            int routeNum = j + routesAdded;
            out_route_table->routes[routeNum].dest =
                route_set[j].ire_dest;
            out_route_table->routes[routeNum].mask =
                route_set[j].ire_mask;
            out_route_table->routes[routeNum].gateway =
                route_set[j].ire_gw;
            out_route_table->routes[routeNum].ifIndex =
                route_set[j].ire_index;
            out_route_table->routes[routeNum].metric =
                route_set[j].ire_metric1;
        }

        if (route_set) tdiFreeThingSet(route_set);

        routesAdded += numRoutes;
    }

    closeTcpFile(tcpFile);
    return out_route_table;
}

DWORD getNumArpEntries(void)
{
    DWORD numEntities;
    TDIEntityID *entitySet = NULL;
    HANDLE tcpFile;
    int i, totalNumber = 0;
    NTSTATUS status;
    PMIB_IPNETROW IpArpTable = NULL;
    DWORD returnSize;

    status = openTcpFile(&tcpFile, FILE_READ_DATA);
    if (!NT_SUCCESS(status))
        return 0;

    status = tdiGetEntityIDSet(tcpFile, &entitySet, &numEntities);

    for (i = 0; i < numEntities; i++) {
        if (isInterface(&entitySet[i]) && hasArp(tcpFile, &entitySet[i]))
        {
            status = tdiGetSetOfThings(tcpFile,
                INFO_CLASS_PROTOCOL,
                INFO_TYPE_PROVIDER,
                IP_MIB_ARPTABLE_ENTRY_ID,
                AT_ENTITY,
                entitySet[i].tei_instance,
                0,
                sizeof(MIB_IPNETROW),
                (PVOID *)&IpArpTable,
                &returnSize);

            if (status == STATUS_SUCCESS) totalNumber += returnSize;
            if (IpArpTable) {
                tdiFreeThingSet(IpArpTable);
                IpArpTable = NULL;
            }
        }
    }

    closeTcpFile(tcpFile);
    if (entitySet) tdiFreeThingSet(entitySet);
    return totalNumber;
}

PMIB_IPNETTABLE getArpTable(void)
{
    DWORD numEntities, returnSize;
    TDIEntityID *entitySet;
    HANDLE tcpFile;
    int i, totalNumber, TmpIdx, CurrIdx = 0;
    NTSTATUS status;
    PMIB_IPNETTABLE IpArpTable = NULL;
    PMIB_IPNETROW AdapterArpTable = NULL;

    totalNumber = getNumArpEntries();

    status = openTcpFile(&tcpFile, FILE_READ_DATA);
    if (!NT_SUCCESS(status))
        return 0;

    IpArpTable = HeapAlloc(GetProcessHeap(), 0,
        sizeof(DWORD) + (sizeof(MIB_IPNETROW) * totalNumber));
    if (!IpArpTable) {
        closeTcpFile(tcpFile);
        return NULL;
    }

    status = tdiGetEntityIDSet(tcpFile, &entitySet, &numEntities);

    for (i = 0; i < numEntities; i++) {
        if (isInterface(&entitySet[i]) && hasArp(tcpFile, &entitySet[i]))
        {
            status = tdiGetSetOfThings(tcpFile,
                INFO_CLASS_PROTOCOL,
                INFO_TYPE_PROVIDER,
                IP_MIB_ARPTABLE_ENTRY_ID,
                AT_ENTITY,
                entitySet[i].tei_instance,
                0,
                sizeof(MIB_IPNETROW),
                (PVOID *)&AdapterArpTable,
                &returnSize);

            if (status == STATUS_SUCCESS) {
                for (TmpIdx = 0; TmpIdx < returnSize; TmpIdx++, CurrIdx++)
                    IpArpTable->table[CurrIdx] = AdapterArpTable[TmpIdx];
                tdiFreeThingSet(AdapterArpTable);
            }
        }
    }

    closeTcpFile(tcpFile);
    tdiFreeThingSet(entitySet);
    IpArpTable->dwNumEntries = CurrIdx;
    return IpArpTable;
}

struct _TABLE_CALL
{
    DWORD TOIID;
    SIZE_T UdpSize;
    SIZE_T TcpSize;
    SIZE_T UdpOffset;
    SIZE_T TcpOffset;
} UdpTcpTableCall[] = {
    {IP_MIB_ARPTABLE_ENTRY_ID, sizeof(MIB_UDPROW), sizeof(MIB_TCPROW), FIELD_OFFSET(MIB_UDPTABLE, table), FIELD_OFFSET(MIB_TCPTABLE, table)},
    {IP_MIB_ADDRTABLE_ENTRY_ID, sizeof(MIB_UDPROW_OWNER_PID), sizeof(MIB_TCPROW_OWNER_PID), FIELD_OFFSET(MIB_UDPTABLE_OWNER_PID, table), FIELD_OFFSET(MIB_TCPTABLE_OWNER_PID, table)},
    {IP_SPECIFIC_MODULE_ENTRY_ID, sizeof(MIB_UDPROW_OWNER_MODULE), sizeof(MIB_TCPROW_OWNER_MODULE), FIELD_OFFSET(MIB_UDPTABLE_OWNER_MODULE, table), FIELD_OFFSET(MIB_TCPTABLE_OWNER_MODULE, table)},
};

#define Add2Ptr(PTR, INC) (PVOID)((ULONG_PTR)(PTR) + (INC))

DWORD getNumUdpEntries(void)
{
    DWORD numEntities;
    TDIEntityID *entitySet = NULL;
    HANDLE tcpFile;
    int i, totalNumber = 0;
    NTSTATUS status;
    PMIB_UDPROW IpUdpTable = NULL;
    DWORD returnSize;

    status = openTcpFile(&tcpFile, FILE_READ_DATA);
    if (!NT_SUCCESS(status))
        return 0;

    status = tdiGetEntityIDSet(tcpFile, &entitySet, &numEntities);

    for (i = 0; i < numEntities; i++) {
        if (entitySet[i].tei_entity == CL_TL_ENTITY && hasArp(tcpFile, &entitySet[i]))
        {
            status = tdiGetSetOfThings(tcpFile,
                INFO_CLASS_PROTOCOL,
                INFO_TYPE_PROVIDER,
                IP_MIB_ARPTABLE_ENTRY_ID,
                CL_TL_ENTITY,
                entitySet[i].tei_instance,
                0,
                sizeof(MIB_UDPROW),
                (PVOID *)&IpUdpTable,
                &returnSize);

            if (status == STATUS_SUCCESS) totalNumber += returnSize;
            if (IpUdpTable) {
                tdiFreeThingSet(IpUdpTable);
                IpUdpTable = NULL;
            }
        }
    }

    closeTcpFile(tcpFile);
    if (entitySet) tdiFreeThingSet(entitySet);
    return totalNumber;
}

PVOID getUdpTable(CLASS_TABLE Class)
{
    DWORD numEntities, returnSize;
    TDIEntityID *entitySet;
    HANDLE tcpFile;
    int i, totalNumber, TmpIdx, CurrIdx = 0;
    NTSTATUS status;
    PMIB_UDPTABLE IpUdpTable = NULL;
    PVOID AdapterUdpTable = NULL;

    totalNumber = getNumUdpEntries();

    status = openTcpFile(&tcpFile, FILE_READ_DATA);
    if (!NT_SUCCESS(status))
        return 0;

    IpUdpTable = HeapAlloc(GetProcessHeap(), 0,
        UdpTcpTableCall[Class].UdpOffset + (UdpTcpTableCall[Class].UdpSize * totalNumber));
    if (!IpUdpTable) {
        closeTcpFile(tcpFile);
        return NULL;
    }

    status = tdiGetEntityIDSet(tcpFile, &entitySet, &numEntities);

    for (i = 0; i < numEntities; i++) {
        if (entitySet[i].tei_entity == CL_TL_ENTITY && hasArp(tcpFile, &entitySet[i]))
        {
            status = tdiGetSetOfThings(tcpFile,
                INFO_CLASS_PROTOCOL,
                INFO_TYPE_PROVIDER,
                UdpTcpTableCall[Class].TOIID,
                CL_TL_ENTITY,
                entitySet[i].tei_instance,
                0,
                UdpTcpTableCall[Class].UdpSize,
                &AdapterUdpTable,
                &returnSize);

            if (status == STATUS_SUCCESS) {
                for (TmpIdx = 0; TmpIdx < returnSize; TmpIdx++, CurrIdx++)
                    CopyMemory(Add2Ptr(IpUdpTable, UdpTcpTableCall[Class].UdpOffset + UdpTcpTableCall[Class].UdpSize * CurrIdx),
                               Add2Ptr(AdapterUdpTable, UdpTcpTableCall[Class].UdpSize * TmpIdx),
                               UdpTcpTableCall[Class].UdpSize);
                tdiFreeThingSet(AdapterUdpTable);
            }
        }
    }

    closeTcpFile(tcpFile);
    tdiFreeThingSet(entitySet);
    IpUdpTable->dwNumEntries = CurrIdx;
    return IpUdpTable;
}

DWORD getNumTcpEntries(void)
{
    DWORD numEntities;
    TDIEntityID *entitySet = NULL;
    HANDLE tcpFile;
    int i, totalNumber = 0;
    NTSTATUS status;
    PMIB_TCPROW IpTcpTable = NULL;
    DWORD returnSize;

    status = openTcpFile(&tcpFile, FILE_READ_DATA);
    if (!NT_SUCCESS(status))
        return 0;

    status = tdiGetEntityIDSet(tcpFile, &entitySet, &numEntities);

    for (i = 0; i < numEntities; i++) {
        if (entitySet[i].tei_entity == CO_TL_ENTITY && hasArp(tcpFile, &entitySet[i]))
        {
            status = tdiGetSetOfThings(tcpFile,
                INFO_CLASS_PROTOCOL,
                INFO_TYPE_PROVIDER,
                IP_MIB_ARPTABLE_ENTRY_ID,
                CO_TL_ENTITY,
                entitySet[i].tei_instance,
                0,
                sizeof(MIB_TCPROW),
                (PVOID *)&IpTcpTable,
                &returnSize);

            if (status == STATUS_SUCCESS) totalNumber += returnSize;
            if (IpTcpTable) {
                tdiFreeThingSet(IpTcpTable);
                IpTcpTable = NULL;
            }
        }
    }

    closeTcpFile(tcpFile);
    if (entitySet) tdiFreeThingSet(entitySet);
    return totalNumber;
}

PVOID getTcpTable(CLASS_TABLE Class)
{
    DWORD numEntities, returnSize;
    TDIEntityID *entitySet;
    HANDLE tcpFile;
    int i, totalNumber, TmpIdx, CurrIdx = 0;
    NTSTATUS status;
    PMIB_TCPTABLE IpTcpTable = NULL;
    PVOID AdapterTcpTable = NULL;

    totalNumber = getNumTcpEntries();

    status = openTcpFile(&tcpFile, FILE_READ_DATA);
    if (!NT_SUCCESS(status))
        return 0;

    IpTcpTable = HeapAlloc(GetProcessHeap(), 0,
        UdpTcpTableCall[Class].TcpOffset + (UdpTcpTableCall[Class].TcpSize * totalNumber));
    if (!IpTcpTable) {
        closeTcpFile(tcpFile);
        return NULL;
    }

    status = tdiGetEntityIDSet(tcpFile, &entitySet, &numEntities);

    for (i = 0; i < numEntities; i++) {
        if (entitySet[i].tei_entity == CO_TL_ENTITY && hasArp(tcpFile, &entitySet[i]))
        {
            status = tdiGetSetOfThings(tcpFile,
                INFO_CLASS_PROTOCOL,
                INFO_TYPE_PROVIDER,
                UdpTcpTableCall[Class].TOIID,
                CO_TL_ENTITY,
                entitySet[i].tei_instance,
                0,
                UdpTcpTableCall[Class].TcpSize,
                &AdapterTcpTable,
                &returnSize);

            if (status == STATUS_SUCCESS) {
                for (TmpIdx = 0; TmpIdx < returnSize; TmpIdx++, CurrIdx++)
                    CopyMemory(Add2Ptr(IpTcpTable, UdpTcpTableCall[Class].TcpOffset + UdpTcpTableCall[Class].TcpSize * CurrIdx),
                               Add2Ptr(AdapterTcpTable, UdpTcpTableCall[Class].TcpSize * TmpIdx),
                               UdpTcpTableCall[Class].TcpSize);
                tdiFreeThingSet(AdapterTcpTable);
            }
        }
    }

    closeTcpFile(tcpFile);
    tdiFreeThingSet(entitySet);
    IpTcpTable->dwNumEntries = CurrIdx;
    return IpTcpTable;
}