/*
 * iphlpapi dll implementation
 *
 * Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "config.h"

#include <stdlib.h>
#include <sys/types.h>
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_NAMESER_H
# include <arpa/nameser.h>
#endif
#ifdef HAVE_RESOLV_H
# include <resolv.h>
#endif

#include "winbase.h"
#include "iphlpapi.h"
#include "ifenum.h"
#include "ipstats.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(iphlpapi);


/******************************************************************
 *    AddIPAddress (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  Address [In]
 *  IpMask [In]
 *  IfIndex [In]
 *  NTEContext [In/Out]
 *  NTEInstance [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI AddIPAddress(IPAddr Address, IPMask IpMask, DWORD IfIndex, PULONG NTEContext, PULONG NTEInstance)
{
  FIXME(":stub\n");
  /* marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    CreateIpForwardEntry (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pRoute [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI CreateIpForwardEntry(PMIB_IPFORWARDROW pRoute)
{
  /* could use SIOCADDRT, not sure I want to */
  FIXME(":stub\n");
  return (DWORD) 0;
}


/******************************************************************
 *    CreateIpNetEntry (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pArpEntry [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI CreateIpNetEntry(PMIB_IPNETROW pArpEntry)
{
  /* could use SIOCSARP on systems that support it, not sure I want to */
  FIXME(":stub\n");
  return (DWORD) 0;
}


/******************************************************************
 *    CreateProxyArpEntry (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  dwAddress [In]
 *  dwMask [In]
 *  dwIfIndex [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI CreateProxyArpEntry(DWORD dwAddress, DWORD dwMask, DWORD dwIfIndex)
{
  FIXME(":stub\n");
  /* marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    DeleteIPAddress (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  NTEContext [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI DeleteIPAddress(ULONG NTEContext)
{
  FIXME(":stub\n");
  /* marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    DeleteIpForwardEntry (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pRoute [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI DeleteIpForwardEntry(PMIB_IPFORWARDROW pRoute)
{
  /* could use SIOCDELRT, not sure I want to */
  FIXME(":stub\n");
  return (DWORD) 0;
}


/******************************************************************
 *    DeleteIpNetEntry (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pArpEntry [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI DeleteIpNetEntry(PMIB_IPNETROW pArpEntry)
{
  /* could use SIOCDARP on systems that support it, not sure I want to */
  FIXME(":stub\n");
  return (DWORD) 0;
}


/******************************************************************
 *    DeleteProxyArpEntry (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  dwAddress [In]
 *  dwMask [In]
 *  dwIfIndex [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI DeleteProxyArpEntry(DWORD dwAddress, DWORD dwMask, DWORD dwIfIndex)
{
  FIXME(":stub\n");
  /* marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    EnableRouter (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pHandle [In/Out]
 *  pOverlapped [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI EnableRouter(HANDLE * pHandle, OVERLAPPED * pOverlapped)
{
  FIXME(":stub\n");
  /* could echo "1" > /proc/net/sys/net/ipv4/ip_forward, not sure I want to
     could map EACCESS to ERROR_ACCESS_DENIED, I suppose
     marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    FlushIpNetTable (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  dwIfIndex [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI FlushIpNetTable(DWORD dwIfIndex)
{
  FIXME(":stub\n");
  /* this flushes the arp cache of the given index
     marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    GetAdapterIndex (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  AdapterName [In/Out]
 *  IfIndex [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetAdapterIndex(LPWSTR AdapterName, PULONG IfIndex)
{
  FIXME(":stub\n");
  /* marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    GetAdaptersInfo (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pAdapterInfo [In/Out]
 *  pOutBufLen [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetAdaptersInfo(PIP_ADAPTER_INFO pAdapterInfo, PULONG pOutBufLen)
{
  DWORD ret;

  if (!pOutBufLen)
    ret = ERROR_INVALID_PARAMETER;
  else {
    DWORD numNonLoopbackInterfaces = getNumNonLoopbackInterfaces();

    if (numNonLoopbackInterfaces > 0) {
      /* this calculation assumes only one address in the IP_ADDR_STRING lists.
         that's okay, because:
         - we don't get multiple addresses per adapter anyway
         - we don't know about per-adapter gateways
         - we don't know about DHCP or WINS (and these must be single anyway) */
      ULONG size = sizeof(IP_ADAPTER_INFO) * numNonLoopbackInterfaces;

      if (!pAdapterInfo || *pOutBufLen < size) {
        *pOutBufLen = size;
        ret = ERROR_BUFFER_OVERFLOW;
      }
      else {
        InterfaceIndexTable *table = getNonLoopbackInterfaceIndexTable();

        if (table) {
          size = sizeof(IP_ADAPTER_INFO) * table->numIndexes;
          if (*pOutBufLen < size) {
            *pOutBufLen = size;
            ret = ERROR_INSUFFICIENT_BUFFER;
          }
          else {
            DWORD ndx;

            memset(pAdapterInfo, 0, size);
            for (ndx = 0; ndx < table->numIndexes; ndx++) {
              PIP_ADAPTER_INFO ptr = &pAdapterInfo[ndx];
              DWORD addrLen = sizeof(ptr->Address), type;

              /* on Win98 this is left empty, but whatever */
              strncpy(ptr->AdapterName,
               getInterfaceNameByIndex(table->indexes[ndx]),
               sizeof(ptr->AdapterName));
              ptr->AdapterName[MAX_ADAPTER_NAME_LENGTH] = '\0';
              getInterfacePhysicalByIndex(table->indexes[ndx], &addrLen,
               ptr->Address, &type);
              /* MS defines address length and type as UINT in some places and
                 DWORD in others, **sigh**.  Don't want to assume that PUINT and
                 PDWORD are equiv (64-bit?) */
              ptr->AddressLength = addrLen;
              ptr->Type = type;
              ptr->Index = table->indexes[ndx];
              toIPAddressString(getInterfaceIPAddrByIndex(table->indexes[ndx]),
               ptr->IpAddressList.IpAddress.String);
              toIPAddressString(getInterfaceMaskByIndex(table->indexes[ndx]),
               ptr->IpAddressList.IpMask.String);
              if (ndx < table->numIndexes + 1)
                ptr->Next = (ndx == table->numIndexes - 1) ? NULL : &pAdapterInfo[ndx + 1];
            }
            ret = NO_ERROR;
          }
          free(table);
        }
        else
          ret = ERROR_OUTOFMEMORY;
      }
    }
    else
      ret = ERROR_NO_DATA;
  }
  return ret;
}


/******************************************************************
 *    GetBestInterface (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  dwDestAddr [In]
 *  pdwBestIfIndex [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetBestInterface(IPAddr dwDestAddr, PDWORD pdwBestIfIndex)
{
  FIXME(":stub\n");
  return (DWORD) 0;
}


/******************************************************************
 *    GetBestRoute (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  dwDestAddr [In]
 *  dwSourceAddr [In]
 *  OUT [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetBestRoute(DWORD dwDestAddr, DWORD dwSourceAddr, PMIB_IPFORWARDROW pBestRoute)
{
  FIXME(":stub\n");
  return (DWORD) 0;
}


/******************************************************************
 *    GetFriendlyIfIndex (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  IfIndex [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetFriendlyIfIndex(DWORD IfIndex)
{
  /* windows doesn't validate these, either, just makes sure the top byte is
     cleared.  I assume my ipshared module never gives an index with the top
     byte set. */
  return IfIndex;
}


/******************************************************************
 *    GetIcmpStatistics (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pStats [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetIcmpStatistics(PMIB_ICMP pStats)
{
  return getICMPStats(pStats);
}


/******************************************************************
 *    GetIfEntry (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pIfRow [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetIfEntry(PMIB_IFROW pIfRow)
{
  DWORD ret;
  const char *name;

  if (!pIfRow)
    return ERROR_INVALID_PARAMETER;

  name = getInterfaceNameByIndex(pIfRow->dwIndex);
  if (name) {
    ret = getInterfaceEntryByName(name, pIfRow);
    if (ret == NO_ERROR)
      ret = getInterfaceStatsByName(name, pIfRow);
  }
  else
    ret = ERROR_INVALID_DATA;
  return ret;
}


/******************************************************************
 *    GetIfTable (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pIfTable [In/Out]
 *  pdwSize [In/Out]
 *  bOrder [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetIfTable(PMIB_IFTABLE pIfTable, PULONG pdwSize, BOOL bOrder)
{
  DWORD ret;

  if (!pdwSize)
    ret = ERROR_INVALID_PARAMETER;
  else {
    DWORD numInterfaces = getNumInterfaces();
    ULONG size = sizeof(MIB_IFTABLE) + (numInterfaces - 1) * sizeof(MIB_IFROW);

    if (!pIfTable || *pdwSize < size) {
      *pdwSize = size;
      ret = ERROR_INSUFFICIENT_BUFFER;
    }
    else {
      InterfaceIndexTable *table = getInterfaceIndexTable();

      if (table) {
        size = sizeof(MIB_IFTABLE) + (table->numIndexes - 1) *
         sizeof(MIB_IFROW);
        if (*pdwSize < size) {
          *pdwSize = size;
          ret = ERROR_INSUFFICIENT_BUFFER;
        }
        else {
          DWORD ndx;

          if (bOrder)
            FIXME(":order not implemented");
          pIfTable->dwNumEntries = 0;
          for (ndx = 0; ndx < table->numIndexes; ndx++) {
            pIfTable->table[ndx].dwIndex = table->indexes[ndx];
            GetIfEntry(&pIfTable->table[ndx]);
            pIfTable->dwNumEntries++;
          }
          ret = NO_ERROR;
        }
        free(table);
      }
      else
        ret = ERROR_OUTOFMEMORY;
    }
  }
  return ret;
}


/******************************************************************
 *    GetInterfaceInfo (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pIfTable [In/Out]
 *  dwOutBufLen [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetInterfaceInfo(PIP_INTERFACE_INFO pIfTable, PULONG dwOutBufLen)
{
  DWORD ret;

  if (!dwOutBufLen)
    ret = ERROR_INVALID_PARAMETER;
  else {
    DWORD numInterfaces = getNumInterfaces();
    ULONG size = sizeof(IP_INTERFACE_INFO) + (numInterfaces - 1) *
     sizeof(IP_ADAPTER_INDEX_MAP);

    if (!pIfTable || *dwOutBufLen < size) {
      *dwOutBufLen = size;
      ret = ERROR_INSUFFICIENT_BUFFER;
    }
    else {
      InterfaceIndexTable *table = getInterfaceIndexTable();

      if (table) {
        size = sizeof(IP_INTERFACE_INFO) + (table->numIndexes - 1) *
         sizeof(IP_ADAPTER_INDEX_MAP);
        if (*dwOutBufLen < size) {
          *dwOutBufLen = size;
          ret = ERROR_INSUFFICIENT_BUFFER;
        }
        else {
          DWORD ndx;

          pIfTable->NumAdapters = 0;
          for (ndx = 0; ndx < table->numIndexes; ndx++) {
            const char *walker, *name;
            WCHAR *assigner;

            pIfTable->Adapter[ndx].Index = table->indexes[ndx];
            name = getInterfaceNameByIndex(table->indexes[ndx]);
            for (walker = name, assigner = pIfTable->Adapter[ndx].Name;
             walker && *walker &&
             assigner - pIfTable->Adapter[ndx].Name < MAX_ADAPTER_NAME - 1;
             walker++, assigner++)
              *assigner = *walker;
            *assigner = 0;
            pIfTable->NumAdapters++;
          }
          ret = NO_ERROR;
        }
        free(table);
      }
      else
        ret = ERROR_OUTOFMEMORY;
    }
  }
  return ret;
}


/******************************************************************
 *    GetIpAddrTable (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pIpAddrTable [In/Out]
 *  pdwSize [In/Out]
 *  bOrder [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetIpAddrTable(PMIB_IPADDRTABLE pIpAddrTable, PULONG pdwSize, BOOL bOrder)
{
  DWORD ret;

  if (!pdwSize)
    ret = ERROR_INVALID_PARAMETER;
  else {
    DWORD numInterfaces = getNumInterfaces();
    ULONG size = sizeof(MIB_IPADDRTABLE) + (numInterfaces - 1) *
     sizeof(MIB_IPADDRROW);

    if (!pIpAddrTable || *pdwSize < size) {
      *pdwSize = size;
      ret = ERROR_INSUFFICIENT_BUFFER;
    }
    else {
      InterfaceIndexTable *table = getInterfaceIndexTable();

      if (table) {
        size = sizeof(MIB_IPADDRTABLE) + (table->numIndexes - 1) *
         sizeof(MIB_IPADDRROW);
        if (*pdwSize < size) {
          *pdwSize = size;
          ret = ERROR_INSUFFICIENT_BUFFER;
        }
        else {
          DWORD ndx;

          if (bOrder)
            FIXME(":order not implemented");
          pIpAddrTable->dwNumEntries = 0;
          for (ndx = 0; ndx < table->numIndexes; ndx++) {
            pIpAddrTable->table[ndx].dwIndex = table->indexes[ndx];
            pIpAddrTable->table[ndx].dwAddr =
             getInterfaceIPAddrByIndex(table->indexes[ndx]);
            pIpAddrTable->table[ndx].dwMask =
             getInterfaceMaskByIndex(table->indexes[ndx]);
            pIpAddrTable->table[ndx].dwBCastAddr =
             getInterfaceBCastAddrByIndex(table->indexes[ndx]);
            /* FIXME: hardcoded reasm size, not sure where to get it */
            pIpAddrTable->table[ndx].dwReasmSize = 65535;
            pIpAddrTable->table[ndx].unused1 = 0;
            pIpAddrTable->table[ndx].wType = 0; /* aka unused2 */
            pIpAddrTable->dwNumEntries++;
          }
          ret = NO_ERROR;
        }
        free(table);
      }
      else
        ret = ERROR_OUTOFMEMORY;
    }
  }
  return ret;
}


/******************************************************************
 *    GetIpForwardTable (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pIpForwardTable [In/Out]
 *  pdwSize [In/Out]
 *  bOrder [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetIpForwardTable(PMIB_IPFORWARDTABLE pIpForwardTable, PULONG pdwSize, BOOL bOrder)
{
  DWORD ret;

  if (!pdwSize)
    ret = ERROR_INVALID_PARAMETER;
  else {
    DWORD numRoutes = getNumRoutes();
    ULONG sizeNeeded = sizeof(MIB_IPFORWARDTABLE) + (numRoutes - 1) *
     sizeof(MIB_IPFORWARDROW);

    if (!pIpForwardTable || *pdwSize < sizeNeeded) {
      *pdwSize = sizeNeeded;
      ret = ERROR_INSUFFICIENT_BUFFER;
    }
    else {
      RouteTable *table = getRouteTable();
      if (table) {
        sizeNeeded = sizeof(MIB_IPFORWARDTABLE) + (table->numRoutes - 1) *
         sizeof(MIB_IPFORWARDROW);
        if (*pdwSize < sizeNeeded) {
          *pdwSize = sizeNeeded;
          ret = ERROR_INSUFFICIENT_BUFFER;
        }
        else {
          DWORD ndx;

          if (bOrder)
            FIXME(":order not implemented");
          pIpForwardTable->dwNumEntries = table->numRoutes;
          for (ndx = 0; ndx < numRoutes; ndx++) {
            pIpForwardTable->table[ndx].dwForwardIfIndex =
             table->routes[ndx].ifIndex;
            pIpForwardTable->table[ndx].dwForwardDest =
             table->routes[ndx].dest;
            pIpForwardTable->table[ndx].dwForwardMask =
             table->routes[ndx].mask;
            pIpForwardTable->table[ndx].dwForwardPolicy = 0;
            pIpForwardTable->table[ndx].dwForwardNextHop =
             table->routes[ndx].gateway;
            /* FIXME: this type is appropriate for local interfaces; may not
               always be appropriate */
            pIpForwardTable->table[ndx].dwForwardType = MIB_IPROUTE_TYPE_DIRECT;
            /* FIXME: other protos might be appropriate, e.g. the default route
               is typically set with MIB_IPPROTO_NETMGMT instead */
            pIpForwardTable->table[ndx].dwForwardProto = MIB_IPPROTO_LOCAL;
            /* punt on age and AS */
            pIpForwardTable->table[ndx].dwForwardAge = 0;
            pIpForwardTable->table[ndx].dwForwardNextHopAS = 0;
            pIpForwardTable->table[ndx].dwForwardMetric1 =
             table->routes[ndx].metric;
            /* rest of the metrics are 0.. */
            pIpForwardTable->table[ndx].dwForwardMetric2 = 0;
            pIpForwardTable->table[ndx].dwForwardMetric3 = 0;
            pIpForwardTable->table[ndx].dwForwardMetric4 = 0;
            pIpForwardTable->table[ndx].dwForwardMetric5 = 0;
          }
          ret = NO_ERROR;
        }
        free(table);
      }
      else
        ret = ERROR_OUTOFMEMORY;
    }
  }
  return ret;
}


/******************************************************************
 *    GetIpNetTable (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pIpNetTable [In/Out]
 *  pdwSize [In/Out]
 *  bOrder [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetIpNetTable(PMIB_IPNETTABLE pIpNetTable, PULONG pdwSize, BOOL bOrder)
{
  DWORD ret;

  if (!pdwSize)
    ret = ERROR_INVALID_PARAMETER;
  else {
    DWORD numEntries = getNumArpEntries();
    ULONG size = sizeof(MIB_IPNETTABLE) + (numEntries - 1) *
     sizeof(MIB_IPNETROW);

    if (!pIpNetTable || *pdwSize < size) {
      *pdwSize = size;
      ret = ERROR_INSUFFICIENT_BUFFER;
    }
    else {
      PMIB_IPNETTABLE table = getArpTable();

      if (table) {
        size = sizeof(MIB_IPNETTABLE) + (table->dwNumEntries - 1) *
         sizeof(MIB_IPNETROW);
        if (*pdwSize < size) {
          *pdwSize = size;
          ret = ERROR_INSUFFICIENT_BUFFER;
        }
        else {
          if (bOrder)
            FIXME(":order not implemented");
          memcpy(pIpNetTable, table, size);
          ret = NO_ERROR;
        }
        free(table);
      }
      else
        ret = ERROR_OUTOFMEMORY;
    }
  }
  return ret;
}


/******************************************************************
 *    GetIpStatistics (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pStats [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetIpStatistics(PMIB_IPSTATS pStats)
{
  return getIPStats(pStats);
}


/******************************************************************
 *    GetNetworkParams (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pFixedInfo [In/Out]
 *  pOutBufLen [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetNetworkParams(PFIXED_INFO pFixedInfo, PULONG pOutBufLen)
{
  DWORD size;

  if (!pOutBufLen)
    return ERROR_INVALID_PARAMETER;

  size = sizeof(FIXED_INFO) + min(1, (_res.nscount  - 1) *
   sizeof(IP_ADDR_STRING));
  if (!pFixedInfo || *pOutBufLen < size) {
    *pOutBufLen = size;
    return ERROR_BUFFER_OVERFLOW;
  }

  memset(pFixedInfo, 0, size);
  size = sizeof(pFixedInfo->HostName);
  GetComputerNameExA(ComputerNameDnsHostname, pFixedInfo->HostName, &size);
  size = sizeof(pFixedInfo->DomainName);
  GetComputerNameExA(ComputerNameDnsDomain, pFixedInfo->DomainName, &size);
  if (_res.nscount > 0) {
    PIP_ADDR_STRING ptr;
    int i;

    for (i = 0, ptr = &pFixedInfo->DnsServerList; i < _res.nscount;
     i++, ptr = ptr->Next) {
      toIPAddressString(_res.nsaddr_list[i].sin_addr.s_addr,
       ptr->IpAddress.String);
      ptr->Next = (PIP_ADDR_STRING)((PBYTE)ptr + sizeof(IP_ADDRESS_STRING));
    }
  }
  /* FIXME: can check whether routing's enabled in /proc/sys/net/ipv4/ip_forward
     I suppose could also check for a listener on port 53 to set EnableDns */
  return NO_ERROR;
}


/******************************************************************
 *    GetNumberOfInterfaces (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pdwNumIf [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetNumberOfInterfaces(PDWORD pdwNumIf)
{
  DWORD ret;

  if (!pdwNumIf)
    ret = ERROR_INVALID_PARAMETER;
  else {
    *pdwNumIf = getNumInterfaces();
    ret = NO_ERROR;
  }
  return ret;
}


/******************************************************************
 *    GetPerAdapterInfo (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  IfIndex [In]
 *  pPerAdapterInfo [In/Out]
 *  pOutBufLen [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetPerAdapterInfo(ULONG IfIndex, PIP_PER_ADAPTER_INFO pPerAdapterInfo, PULONG pOutBufLen)
{
  FIXME(":stub\n");
  /* marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    GetRTTAndHopCount (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  DestIpAddress [In]
 *  HopCount [In/Out]
 *  MaxHops [In]
 *  RTT [In/Out]
 *
 * RETURNS
 *
 *  BOOL
 *
 */
BOOL WINAPI GetRTTAndHopCount(IPAddr DestIpAddress, PULONG HopCount, ULONG MaxHops, PULONG RTT)
{
  FIXME(":stub\n");
  return (BOOL) 0;
}


/******************************************************************
 *    GetTcpStatistics (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pStats [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetTcpStatistics(PMIB_TCPSTATS pStats)
{
  return getTCPStats(pStats);
}


/******************************************************************
 *    GetTcpTable (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pTcpTable [In/Out]
 *  pdwSize [In/Out]
 *  bOrder [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetTcpTable(PMIB_TCPTABLE pTcpTable, PDWORD pdwSize, BOOL bOrder)
{
  DWORD ret;

  if (!pdwSize)
    ret = ERROR_INVALID_PARAMETER;
  else {
    DWORD numEntries = getNumTcpEntries();
    ULONG size = sizeof(MIB_TCPTABLE) + (numEntries - 1) * sizeof(MIB_TCPROW);

    if (!pTcpTable || *pdwSize < size) {
      *pdwSize = size;
      ret = ERROR_INSUFFICIENT_BUFFER;
    }
    else {
      PMIB_TCPTABLE table = getTcpTable();

      if (table) {
        size = sizeof(MIB_TCPTABLE) + (table->dwNumEntries - 1) *
         sizeof(MIB_TCPROW);
        if (*pdwSize < size) {
          *pdwSize = size;
          ret = ERROR_INSUFFICIENT_BUFFER;
        }
        else {
          if (bOrder)
            FIXME(":order not implemented");
          memcpy(pTcpTable, table, size);
          ret = NO_ERROR;
        }
        free(table);
      }
      else
        ret = ERROR_OUTOFMEMORY;
    }
  }
  return ret;
}


/******************************************************************
 *    GetUdpStatistics (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pStats [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetUdpStatistics(PMIB_UDPSTATS pStats)
{
  return getUDPStats(pStats);
}


/******************************************************************
 *    GetUdpTable (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pUdpTable [In/Out]
 *  pdwSize [In/Out]
 *  bOrder [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetUdpTable(PMIB_UDPTABLE pUdpTable, PDWORD pdwSize, BOOL bOrder)
{
  DWORD ret;

  if (!pdwSize)
    ret = ERROR_INVALID_PARAMETER;
  else {
    DWORD numEntries = getNumUdpEntries();
    ULONG size = sizeof(MIB_UDPTABLE) + (numEntries - 1) * sizeof(MIB_UDPROW);

    if (!pUdpTable || *pdwSize < size) {
      *pdwSize = size;
      ret = ERROR_INSUFFICIENT_BUFFER;
    }
    else {
      PMIB_UDPTABLE table = getUdpTable();

      if (table) {
        size = sizeof(MIB_UDPTABLE) + (table->dwNumEntries - 1) *
         sizeof(MIB_UDPROW);
        if (*pdwSize < size) {
          *pdwSize = size;
          ret = ERROR_INSUFFICIENT_BUFFER;
        }
        else {
          if (bOrder)
            FIXME(":order not implemented");
          memcpy(pUdpTable, table, size);
          ret = NO_ERROR;
        }
        free(table);
      }
      else
        ret = ERROR_OUTOFMEMORY;
    }
  }
  return ret;
}


/******************************************************************
 *    GetUniDirectionalAdapterInfo (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pIPIfInfo [In/Out]
 *  dwOutBufLen [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI GetUniDirectionalAdapterInfo(PIP_UNIDIRECTIONAL_ADAPTER_ADDRESS pIPIfInfo, PULONG dwOutBufLen)
{
  /* a unidirectional adapter?? not bloody likely! */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    IpReleaseAddress (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  AdapterInfo [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI IpReleaseAddress(PIP_ADAPTER_INDEX_MAP AdapterInfo)
{
  /* not a stub, never going to support this (and I never mark an adapter as
     DHCP enabled, see GetAdaptersInfo, so this should never get called) */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    IpRenewAddress (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  AdapterInfo [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI IpRenewAddress(PIP_ADAPTER_INDEX_MAP AdapterInfo)
{
  /* not a stub, never going to support this (and I never mark an adapter as
     DHCP enabled, see GetAdaptersInfo, so this should never get called) */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    NotifyAddrChange (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  Handle [In/Out]
 *  overlapped [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI NotifyAddrChange(PHANDLE Handle, LPOVERLAPPED overlapped)
{
  FIXME(":stub\n");
  /* marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    NotifyRouteChange (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  Handle [In/Out]
 *  overlapped [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI NotifyRouteChange(PHANDLE Handle, LPOVERLAPPED overlapped)
{
  FIXME(":stub\n");
  /* marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    SendARP (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  DestIP [In]
 *  SrcIP [In]
 *  pMacAddr [In/Out]
 *  PhyAddrLen [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI SendARP(IPAddr DestIP, IPAddr SrcIP, PULONG pMacAddr, PULONG PhyAddrLen)
{
  FIXME(":stub\n");
  /* marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    SetIfEntry (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pIfRow [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI SetIfEntry(PMIB_IFROW pIfRow)
{
  /* this is supposed to set an administratively interface up or down.
     Could do SIOCSIFFLAGS and set/clear IFF_UP, but, not sure I want to, and
     this sort of down is indistinguishable from other sorts of down (e.g. no
     link). */
  FIXME(":stub\n");
  return ERROR_NOT_SUPPORTED;
}


/******************************************************************
 *    SetIpForwardEntry (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pRoute [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI SetIpForwardEntry(PMIB_IPFORWARDROW pRoute)
{
  /* this is to add a route entry, how's it distinguishable from
     CreateIpForwardEntry?
     could use SIOCADDRT, not sure I want to */
  FIXME(":stub\n");
  return (DWORD) 0;
}


/******************************************************************
 *    SetIpNetEntry (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pArpEntry [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI SetIpNetEntry(PMIB_IPNETROW pArpEntry)
{
  /* same as CreateIpNetEntry here, could use SIOCSARP, not sure I want to */
  FIXME(":stub\n");
  return (DWORD) 0;
}


/******************************************************************
 *    SetIpStatistics (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pIpStats [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI SetIpStatistics(PMIB_IPSTATS pIpStats)
{
  FIXME(":stub\n");
  return (DWORD) 0;
}


/******************************************************************
 *    SetIpTTL (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  nTTL [In]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI SetIpTTL(UINT nTTL)
{
  /* could echo nTTL > /proc/net/sys/net/ipv4/ip_default_ttl, not sure I
     want to.  Could map EACCESS to ERROR_ACCESS_DENIED, I suppose */
  FIXME(":stub\n");
  return (DWORD) 0;
}


/******************************************************************
 *    SetTcpEntry (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pTcpRow [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI SetTcpEntry(PMIB_TCPROW pTcpRow)
{
  FIXME(":stub\n");
  return (DWORD) 0;
}


/******************************************************************
 *    UnenableRouter (IPHLPAPI.@)
 *
 *
 * PARAMS
 *
 *  pOverlapped [In/Out]
 *  lpdwEnableCount [In/Out]
 *
 * RETURNS
 *
 *  DWORD
 *
 */
DWORD WINAPI UnenableRouter(OVERLAPPED * pOverlapped, LPDWORD lpdwEnableCount)
{
  FIXME(":stub\n");
  /* could echo "0" > /proc/net/sys/net/ipv4/ip_forward, not sure I want to
     could map EACCESS to ERROR_ACCESS_DENIED, I suppose
     marking Win2K+ functions not supported */
  return ERROR_NOT_SUPPORTED;
}