add winpcap 4.0.2 from url http://www.winpcap.org/

[natblaster.git] / winpcap / packetNtx / Dll / AdInfo.c

/*
 * Copyright (c) 1999 - 2005 NetGroup, Politecnico di Torino (Italy)
 * Copyright (c) 2005 - 2006 CACE Technologies, Davis (California)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Politecnico di Torino, CACE Technologies 
 * nor the names of its contributors may be used to endorse or promote 
 * products derived from this software without specific prior written 
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

/*
 This file contains the support functions used by packet.dll to retrieve information about installed 
 adapters, like

        - the adapter list
        - the device associated to any adapter and the description of the adapter
        - physical parameters like the linkspeed or the link layer type
        - the IP and link layer addresses  */

#define UNICODE 1

#pragma warning (disable : 4127)  //conditional expression is constant. Used for do{}while(FALSE) loops.

#if (MSC_VER < 1300)
#pragma warning (disable : 4710) // inline function not expanded. used for strsafe functions
#endif

#include <packet32.h>
#include "Packet32-Int.h"
#include "debug.h"

#ifdef HAVE_WANPACKET_API
#include "wanpacket/wanpacket.h"
#endif //HAVE_WANPACKET_API

#include <windows.h>
#include <windowsx.h>
#include <Iphlpapi.h>



#include <strsafe.h>

#include <ntddndis.h>

#include <WpcapNames.h>

static BOOLEAN PacketAddFakeNdisWanAdapter();

PADAPTER_INFO g_AdaptersInfoList = NULL;        ///< Head of the adapter information list. This list is populated when packet.dll is linked by the application.
HANDLE g_AdaptersInfoMutex = NULL;              ///< Mutex that protects the adapter information list. NOTE: every API that takes an ADAPTER_INFO as parameter assumes that it has been called with the mutex acquired.

extern FARPROC g_GetAdaptersAddressesPointer;

#ifdef HAVE_AIRPCAP_API
extern AirpcapGetLastErrorHandler g_PAirpcapGetLastError;
extern AirpcapGetDeviceListHandler g_PAirpcapGetDeviceList;
extern AirpcapFreeDeviceListHandler g_PAirpcapFreeDeviceList;
extern AirpcapOpenHandler g_PAirpcapOpen;
extern AirpcapCloseHandler g_PAirpcapClose;
extern AirpcapGetLinkTypeHandler g_PAirpcapGetLinkType;
extern AirpcapSetKernelBufferHandler g_PAirpcapSetKernelBuffer;
extern AirpcapSetFilterHandler g_PAirpcapSetFilter;
extern AirpcapGetMacAddressHandler g_PAirpcapGetMacAddress;
extern AirpcapSetMinToCopyHandler g_PAirpcapSetMinToCopy;
extern AirpcapGetReadEventHandler g_PAirpcapGetReadEvent;
extern AirpcapReadHandler g_PAirpcapRead;
extern AirpcapGetStatsHandler g_PAirpcapGetStats;
#endif /* HAVE_AIRPCAP_API */

#ifdef HAVE_DAG_API
extern dagc_open_handler g_p_dagc_open;
extern dagc_close_handler g_p_dagc_close;
extern dagc_getlinktype_handler g_p_dagc_getlinktype;
extern dagc_getlinkspeed_handler g_p_dagc_getlinkspeed;
extern dagc_finddevs_handler g_p_dagc_finddevs;
extern dagc_freedevs_handler g_p_dagc_freedevs;
#endif /* HAVE_DAG_API */

/// Title of error windows
TCHAR   szWindowTitle[] = TEXT("PACKET.DLL");

ULONG inet_addrU(const WCHAR *cp);

extern HKEY WinpcapKey;
extern WCHAR *WinPcapKeyBuffer;


/*! 
  \brief Gets the link layer of an adapter, querying the registry.
  \param AdapterObject Handle to an open adapter.
  \param type Pointer to a NetType structure that will be filled by the function.
  \return If the function succeeds, the return value is nonzero, otherwise the return value is zero.

  This function retrieves from the registry the link layer and the speed (in bps) of an opened adapter.
  These values are copied in the NetType structure provided by the user.
  The LinkType field of the type parameter can have one of the following values:

  - NdisMedium802_3: Ethernet (802.3) 
  - NdisMediumWan: WAN 
  - NdisMedium802_5: Token Ring (802.5) 
  - NdisMediumFddi: FDDI 
  - NdisMediumAtm: ATM 
  - NdisMediumArcnet878_2: ARCNET (878.2) 
*/
static BOOLEAN PacketGetLinkLayerFromRegistry(LPADAPTER AdapterObject, NetType *type)
{
        BOOLEAN    Status;
        ULONG      IoCtlBufferLength=(sizeof(PACKET_OID_DATA)+sizeof(ULONG)-1);
        PPACKET_OID_DATA  OidData;

        TRACE_ENTER("PacketGetLinkLayerFromRegistry");

        OidData=GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT,IoCtlBufferLength);
        if (OidData == NULL) {
                TRACE_PRINT("PacketGetLinkLayerFromRegistry failed");
                TRACE_EXIT("PacketGetLinkLayerFromRegistry");
                return FALSE;
        }
        //get the link-layer type
        OidData->Oid = OID_GEN_MEDIA_IN_USE;
        OidData->Length = sizeof (ULONG);
        Status = PacketRequest(AdapterObject,FALSE,OidData);
        type->LinkType=*((UINT*)OidData->Data);

        //get the link-layer speed
        OidData->Oid = OID_GEN_LINK_SPEED;
        OidData->Length = sizeof (ULONG);
        Status = PacketRequest(AdapterObject,FALSE,OidData);

        if (Status == TRUE)
        {
                type->LinkSpeed=*((UINT*)OidData->Data)*100;
        }

        GlobalFreePtr (OidData);

        TRACE_PRINT2("Media:%.010d" "\t" "Speed=%0.10I64u",
                type->LinkType,
                type->LinkSpeed);

        TRACE_EXIT("PacketGetLinkLayerFromRegistry");
        return Status;
}


/*!
  \brief Scan the registry to retrieve the IP addresses of an adapter.
  \param AdapterName String that contains the name of the adapter.
  \param buffer A user allocated array of npf_if_addr that will be filled by the function.
  \param NEntries Size of the array (in npf_if_addr).
  \return If the function succeeds, the return value is nonzero.

  This function grabs from the registry information like the IP addresses, the netmasks 
  and the broadcast addresses of an interface. The buffer passed by the user is filled with 
  npf_if_addr structures, each of which contains the data for a single address. If the buffer
  is full, the reaming addresses are dropeed, therefore set its dimension to sizeof(npf_if_addr)
  if you want only the first address.
*/
static BOOLEAN PacketGetAddressesFromRegistry(LPCSTR AdapterNameA, npf_if_addr* buffer, PLONG NEntries)
{
        WCHAR   *IfNameW;
        WCHAR   AdapterNameW[ADAPTER_NAME_LENGTH];
        HKEY    SystemKey;
        HKEY    InterfaceKey;
        HKEY    ParametersKey;
        HKEY    TcpIpKey;
        HKEY    UnderTcpKey;
        LONG    status;
        WCHAR   String[1024+1];
        DWORD   RegType;
        ULONG   BufLen;
        DWORD   DHCPEnabled;
        struct  sockaddr_in *TmpAddr, *TmpBroad;
        LONG    naddrs,nmasks,StringPos;
        DWORD   ZeroBroadcast;
//  
//      Old registry based WinPcap names
//
//      UINT    RegQueryLen;
//      WCHAR   npfDeviceNamesPrefix[MAX_WINPCAP_KEY_CHARS];
        WCHAR   npfDeviceNamesPrefix[MAX_WINPCAP_KEY_CHARS] = NPF_DEVICE_NAMES_PREFIX_WIDECHAR;
        
        TRACE_ENTER("PacketGetAddressesFromRegistry");
        
        StringCchPrintfW(AdapterNameW, ADAPTER_NAME_LENGTH, L"%S", AdapterNameA);

        IfNameW = wcsrchr(AdapterNameW, L'\\');
        if (IfNameW == NULL)
                IfNameW = AdapterNameW;
        else
                IfNameW++;

//  
//      Old registry based WinPcap names
//
//      RegQueryLen = sizeof(npfDeviceNamesPrefix)/sizeof(npfDeviceNamesPrefix[0]);
//      
//      if (QueryWinPcapRegistryStringW(TEXT(NPF_DEVICES_PREFIX_REG_KEY), npfDeviceNamesPrefix, &RegQueryLen, NPF_DEVICE_NAMES_PREFIX_WIDECHAR) == FALSE && RegQueryLen == 0)
//              return FALSE;
//      
//      if (wcsncmp(ifname, npfDeviceNamesPrefix, RegQueryLen) == 0)
//              ifname += RegQueryLen;

        if (wcsncmp(IfNameW, npfDeviceNamesPrefix, wcslen(npfDeviceNamesPrefix)) == 0)
                                IfNameW += wcslen(npfDeviceNamesPrefix);

        if(     RegOpenKeyEx(HKEY_LOCAL_MACHINE, TEXT("SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Interfaces"), 0, KEY_READ, &UnderTcpKey) == ERROR_SUCCESS)
        {
                status = RegOpenKeyEx(UnderTcpKey,IfNameW,0,KEY_READ,&TcpIpKey);
                if (status != ERROR_SUCCESS) {
                        RegCloseKey(UnderTcpKey);
                        goto fail;
                }
        }
        else
        {
                // Query the registry key with the interface's adresses
                status = RegOpenKeyEx(HKEY_LOCAL_MACHINE,TEXT("SYSTEM\\CurrentControlSet\\Services"),0,KEY_READ,&SystemKey);
                if (status != ERROR_SUCCESS)
                        goto fail;
                status = RegOpenKeyEx(SystemKey,IfNameW,0,KEY_READ,&InterfaceKey);
                if (status != ERROR_SUCCESS) {
                        RegCloseKey(SystemKey);
                        RegCloseKey(UnderTcpKey);
                        goto fail;
                }
                RegCloseKey(SystemKey);
                status = RegOpenKeyEx(InterfaceKey,TEXT("Parameters"),0,KEY_READ,&ParametersKey);
                if (status != ERROR_SUCCESS) {
                        RegCloseKey(InterfaceKey);
                        RegCloseKey(UnderTcpKey);
                        goto fail;
                }
                RegCloseKey(InterfaceKey);
                status = RegOpenKeyEx(ParametersKey,TEXT("TcpIp"),0,KEY_READ,&TcpIpKey);
                if (status != ERROR_SUCCESS) {
                        RegCloseKey(ParametersKey);
                        RegCloseKey(UnderTcpKey);
                        goto fail;
                }
                RegCloseKey(ParametersKey);
                BufLen = sizeof String;
        }

        BufLen = 4;
        /* Try to detect if the interface has a zero broadcast addr */
        status=RegQueryValueEx(TcpIpKey,TEXT("UseZeroBroadcast"),NULL,&RegType,(LPBYTE)&ZeroBroadcast,&BufLen);
        if (status != ERROR_SUCCESS)
                ZeroBroadcast=0;
        
        BufLen = 4;
        /* See if DHCP is used by this system */
        status=RegQueryValueEx(TcpIpKey,TEXT("EnableDHCP"),NULL,&RegType,(LPBYTE)&DHCPEnabled,&BufLen);
        if (status != ERROR_SUCCESS)
                DHCPEnabled=0;
        
        
        /* Retrieve the adrresses */
        if(DHCPEnabled){
                
                BufLen = sizeof String;
                // Open the key with the addresses
                status = RegQueryValueEx(TcpIpKey,TEXT("DhcpIPAddress"),NULL,&RegType,(LPBYTE)String,&BufLen);
                if (status != ERROR_SUCCESS) {
                        RegCloseKey(TcpIpKey);
                        RegCloseKey(UnderTcpKey);
                        goto fail;
                }

                // scan the key to obtain the addresses
                StringPos = 0;
                for(naddrs = 0;naddrs <* NEntries;naddrs++){
                        TmpAddr = (struct sockaddr_in *) &(buffer[naddrs].IPAddress);
                        
                        if((TmpAddr->sin_addr.S_un.S_addr = inet_addrU(String + StringPos))!= -1){
                                TmpAddr->sin_family = AF_INET;
                                
                                TmpBroad = (struct sockaddr_in *) &(buffer[naddrs].Broadcast);
                                TmpBroad->sin_family = AF_INET;
                                if(ZeroBroadcast==0)
                                        TmpBroad->sin_addr.S_un.S_addr = 0xffffffff; // 255.255.255.255
                                else
                                        TmpBroad->sin_addr.S_un.S_addr = 0; // 0.0.0.0

                                while(*(String + StringPos) != 0)StringPos++;
                                StringPos++;
                                
                                if(*(String + StringPos) == 0 || (StringPos * sizeof (WCHAR)) >= BufLen)
                                        break;                          
                        }
                        else break;
                }               
                
                BufLen = sizeof String;
                // Open the key with the netmasks
                status = RegQueryValueEx(TcpIpKey,TEXT("DhcpSubnetMask"),NULL,&RegType,(LPBYTE)String,&BufLen);
                if (status != ERROR_SUCCESS) {
                        RegCloseKey(TcpIpKey);
                        RegCloseKey(UnderTcpKey);
                        goto fail;
                }
                
                // scan the key to obtain the masks
                StringPos = 0;
                for(nmasks = 0;nmasks < *NEntries;nmasks++){
                        TmpAddr = (struct sockaddr_in *) &(buffer[nmasks].SubnetMask);
                        
                        if((TmpAddr->sin_addr.S_un.S_addr = inet_addrU(String + StringPos))!= -1){
                                TmpAddr->sin_family = AF_INET;
                                
                                while(*(String + StringPos) != 0)StringPos++;
                                StringPos++;
                                                                
                                if(*(String + StringPos) == 0 || (StringPos * sizeof (WCHAR)) >= BufLen)
                                        break;
                        }
                        else break;
                }               
                
                // The number of masks MUST be equal to the number of adresses
                if(nmasks != naddrs){
                        RegCloseKey(TcpIpKey);
                        RegCloseKey(UnderTcpKey);
                        goto fail;
                }
                                
        }
        else{
                
                BufLen = sizeof String;
                // Open the key with the addresses
                status = RegQueryValueEx(TcpIpKey,TEXT("IPAddress"),NULL,&RegType,(LPBYTE)String,&BufLen);
                if (status != ERROR_SUCCESS) {
                        RegCloseKey(TcpIpKey);
                        RegCloseKey(UnderTcpKey);
                        goto fail;
                }
                
                // scan the key to obtain the addresses
                StringPos = 0;
                for(naddrs = 0;naddrs < *NEntries;naddrs++){
                        TmpAddr = (struct sockaddr_in *) &(buffer[naddrs].IPAddress);
                        
                        if((TmpAddr->sin_addr.S_un.S_addr = inet_addrU(String + StringPos))!= -1){
                                TmpAddr->sin_family = AF_INET;

                                TmpBroad = (struct sockaddr_in *) &(buffer[naddrs].Broadcast);
                                TmpBroad->sin_family = AF_INET;
                                if(ZeroBroadcast==0)
                                        TmpBroad->sin_addr.S_un.S_addr = 0xffffffff; // 255.255.255.255
                                else
                                        TmpBroad->sin_addr.S_un.S_addr = 0; // 0.0.0.0
                                
                                while(*(String + StringPos) != 0)StringPos++;
                                StringPos++;
                                
                                if(*(String + StringPos) == 0 || (StringPos * sizeof (WCHAR)) >= BufLen)
                                        break;
                        }
                        else break;
                }               
                
                BufLen = sizeof String;
                // Open the key with the netmasks
                status = RegQueryValueEx(TcpIpKey,TEXT("SubnetMask"),NULL,&RegType,(LPBYTE)String,&BufLen);
                if (status != ERROR_SUCCESS) {
                        RegCloseKey(TcpIpKey);
                        RegCloseKey(UnderTcpKey);
                        goto fail;
                }
                
                // scan the key to obtain the masks
                StringPos = 0;
                for(nmasks = 0;nmasks <* NEntries;nmasks++){
                        TmpAddr = (struct sockaddr_in *) &(buffer[nmasks].SubnetMask);
                        
                        if((TmpAddr->sin_addr.S_un.S_addr = inet_addrU(String + StringPos))!= -1){
                                TmpAddr->sin_family = AF_INET;
                                
                                while(*(String + StringPos) != 0)StringPos++;
                                StringPos++;
                                
                                if(*(String + StringPos) == 0 || (StringPos * sizeof (WCHAR)) >= BufLen)
                                        break;
                        }
                        else break;
                }               
                
                // The number of masks MUST be equal to the number of adresses
                if(nmasks != naddrs){
                        RegCloseKey(TcpIpKey);
                        RegCloseKey(UnderTcpKey);
                        goto fail;
                }
                                
        }
        
        *NEntries = naddrs + 1;

        RegCloseKey(TcpIpKey);
        RegCloseKey(UnderTcpKey);
        
        if (status != ERROR_SUCCESS) {
                goto fail;
        }
        
        TRACE_PRINT("Successfully retrieved the addresses from the registry.");
        TRACE_EXIT("PacketGetAddressesFromRegistry");
        return TRUE;
        
fail:

        TRACE_PRINT("Failed retrieving the addresses from the registry.");
        TRACE_EXIT("PacketGetAddressesFromRegistry");
    return FALSE;
}

#ifdef HAVE_IPHELPER_API
/*!
  \brief Adds the IPv6 addresses of an adapter to the ADAPTER_INFO structure that describes it.
  \param AdInfo Pointer to the ADAPTER_INFO structure that keeps the information about the adapter.
  \return If the function succeeds, the function returns TRUE.

  \note the structure pointed by AdInfo must be initialized the an properly filled. In particular, AdInfo->Name
  must be a valid capture device name.
  \note uses the GetAdaptersAddresses() Ip Helper API function, so it works only on systems where IP Helper API
  provides it (WinXP and successive).
  \note we suppose that we are called after having acquired the g_AdaptersInfoMutex mutex
*/
static BOOLEAN PacketAddIP6Addresses(PADAPTER_INFO AdInfo)
{
        ULONG BufLen;
        PIP_ADAPTER_ADDRESSES AdBuffer, TmpAddr;
        PCHAR OrName;
        PIP_ADAPTER_UNICAST_ADDRESS UnicastAddr;
        struct sockaddr_storage *Addr;
        INT     AddrLen;
//  
//      Old registry based WinPcap names
//
//      UINT    RegQueryLen;
//      CHAR    npfDeviceNamesPrefix[MAX_WINPCAP_KEY_CHARS];
        CHAR    npfDeviceNamesPrefix[MAX_WINPCAP_KEY_CHARS] = NPF_DRIVER_COMPLETE_DEVICE_PREFIX;

        TRACE_ENTER("PacketAddIP6Addresses");

        if(g_GetAdaptersAddressesPointer == NULL)       
        {
                TRACE_PRINT("GetAdaptersAddressesPointer not available on the system, simply returning success...");

                TRACE_EXIT("PacketAddIP6Addresses");
                return TRUE;    // GetAdaptersAddresses() not present on this system,
        }                                                                                       // return immediately.

        if(g_GetAdaptersAddressesPointer(AF_UNSPEC, GAA_FLAG_SKIP_ANYCAST| GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_FRIENDLY_NAME, NULL, NULL, &BufLen) != ERROR_BUFFER_OVERFLOW)
        {
                TRACE_PRINT("PacketAddIP6Addresses: GetAdaptersAddresses Failed while retrieving the needed buffer size");

                TRACE_EXIT("PacketAddIP6Addresses");
                return FALSE;
        }

        TRACE_PRINT("PacketAddIP6Addresses, retrieved needed storage for the call");

        AdBuffer = GlobalAllocPtr(GMEM_MOVEABLE, BufLen);
        if (AdBuffer == NULL) 
        {
                TRACE_PRINT("PacketAddIP6Addresses: GlobalAlloc Failed");
                TRACE_EXIT("PacketAddIP6Addresses");
                return FALSE;
        }

        if(g_GetAdaptersAddressesPointer(AF_UNSPEC,  GAA_FLAG_SKIP_ANYCAST| GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_FRIENDLY_NAME, NULL, AdBuffer, &BufLen) != ERROR_SUCCESS)
        {
                TRACE_PRINT("PacketGetIP6Addresses: GetAdaptersAddresses Failed while retrieving the addresses");
                GlobalFreePtr(AdBuffer);
                TRACE_EXIT("PacketAddIP6Addresses");
                return FALSE;
        }

        TRACE_PRINT("PacketAddIP6Addresses, retrieved addresses, scanning the list");

        //
        // Scan the list of adddresses obtained from the IP helper API
        //
        for(TmpAddr = AdBuffer; TmpAddr != NULL; TmpAddr = TmpAddr->Next)
        {
//  
//      Old registry based WinPcap names
//
//              RegQueryLen = sizeof(npfDeviceNamesPrefix)/sizeof(npfDeviceNamesPrefix[0]);
//              
//              if (QueryWinPcapRegistryStringA(NPF_DRIVER_COMPLETE_DEVICE_PREFIX_REG_KEY, npfDeviceNamesPrefix, &RegQueryLen, NPF_DRIVER_COMPLETE_DEVICE_PREFIX) == FALSE && RegQueryLen == 0)
//                      continue;
//                      
//              OrName = AdInfo->Name + RegQueryLen - 1;

                OrName = AdInfo->Name + strlen(npfDeviceNamesPrefix);

                TRACE_PRINT("PacketAddIP6Addresses, external loop");
                if(strcmp(TmpAddr->AdapterName, OrName) == 0)
                {
                        // Found a corresponding adapter, scan its address list
                        for(UnicastAddr = TmpAddr->FirstUnicastAddress; UnicastAddr != NULL; UnicastAddr = UnicastAddr->Next)
                        {
                                        TRACE_PRINT("PacketAddIP6Addresses, internal loop");

                                        AddrLen = UnicastAddr->Address.iSockaddrLength;
                                        Addr = (struct sockaddr_storage *)UnicastAddr->Address.lpSockaddr;
                                        if(Addr->ss_family == AF_INET6)
                                        {
                                                // Be sure not to overflow the addresses buffer of this adapter
                                                if(AdInfo->NNetworkAddresses >= MAX_NETWORK_ADDRESSES)
                                                {
                                                        GlobalFreePtr(AdBuffer);
                                                        TRACE_PRINT("The space in AdInfo->NNetworkAddresses is not large enough, failing");
                                                        TRACE_EXIT("PacketAddIP6Addresses");
                                                        return FALSE;
                                                }

                                                memcpy(&(AdInfo->NetworkAddresses[AdInfo->NNetworkAddresses].IPAddress), Addr, AddrLen);
                                                memset(&(AdInfo->NetworkAddresses[AdInfo->NNetworkAddresses].SubnetMask), 0, sizeof(struct sockaddr_storage));
                                                memset(&(AdInfo->NetworkAddresses[AdInfo->NNetworkAddresses].Broadcast), 0, sizeof(struct sockaddr_storage));
                                                AdInfo->NNetworkAddresses ++;
                                        }
                        }
                }
        }

        TRACE_PRINT("PacketAddIP6Addresses, finished parsing the addresses");

        GlobalFreePtr(AdBuffer);

        TRACE_EXIT("PacketAddIP6Addresses");
        return TRUE;
}
#endif // HAVE_IPHELPER_API

/*!
  \brief Check if a string contains the "1394" substring

        We prevent opening of firewire adapters since they have non standard behaviors that can cause
        problems with winpcap

  \param AdapterDesc NULL-terminated ASCII string with the adapter's description 
  \return TRUE if the input string contains "1394"
*/
BOOLEAN IsFireWire(TCHAR *AdapterDesc)
{
        TRACE_ENTER("IsFireWire");
        if(wcsstr(AdapterDesc, FIREWIRE_SUBSTR) != NULL)
        {               
                TRACE_EXIT("IsFireWire");
                return TRUE;
        }

        TRACE_EXIT("IsFireWire");
        return FALSE;
}

#ifdef HAVE_IPHELPER_API

/*!
  \brief Adds an entry to the adapter description list, gathering its values from the IP Helper API.
  \param IphAd PIP_ADAPTER_INFO IP Helper API structure containing the parameters of the adapter that must be added to the list.
  \return If the function succeeds, the return value is TRUE.
  \note we suppose that we are called after having acquired the g_AdaptersInfoMutex mutex
*/
static BOOLEAN PacketAddAdapterIPH(PIP_ADAPTER_INFO IphAd)
{
        PADAPTER_INFO TmpAdInfo, SAdInfo;
        PIP_ADDR_STRING TmpAddrStr;
        UINT i;
        struct sockaddr_in *TmpAddr;
        CHAR TName[256];
        LPADAPTER adapter;
//  
//      Old registry based WinPcap names
//
//      UINT    RegQueryLen;
//      CHAR    npfCompleteDriverPrefix[MAX_WINPCAP_KEY_CHARS];
        CHAR    npfCompleteDriverPrefix[MAX_WINPCAP_KEY_CHARS] = NPF_DRIVER_COMPLETE_DEVICE_PREFIX;

        TRACE_ENTER("PacketAddAdapterIPH");

// Create the NPF device name from the original device name

//  
//      Old registry based WinPcap names
//
//      RegQueryLen = sizeof(npfCompleteDriverPrefix)/sizeof(npfCompleteDriverPrefix[0]);
//      
//      if (QueryWinPcapRegistryStringA(NPF_DRIVER_COMPLETE_DEVICE_PREFIX_REG_KEY, npfCompleteDriverPrefix, &RegQueryLen, NPF_DRIVER_COMPLETE_DEVICE_PREFIX) == FALSE && RegQueryLen == 0)
//              return FALSE;
//
//      // Create the NPF device name from the original device name
//      _snprintf(TName,
//              sizeof(TName) - 1 - RegQueryLen - 1, 
//              "%s%s",
//              npfCompleteDriverPrefix, 
//              IphAd->AdapterName);

        // Create the NPF device name from the original device name
        StringCchPrintfA(TName,
                sizeof(TName) - strlen(npfCompleteDriverPrefix), 
                "%s%s",
                npfCompleteDriverPrefix, 
                IphAd->AdapterName);

        // Scan the adapters list to see if this one is already present
        for(SAdInfo = g_AdaptersInfoList; SAdInfo != NULL; SAdInfo = SAdInfo->Next)
        {
                if(strcmp(TName, SAdInfo->Name) == 0)
                {
                        TRACE_PRINT1("PacketAddAdapterIPH: Adapter %s already present in the list", TName);
                        goto SkipAd;
                }
        }
        
        if(IphAd->Type == IF_TYPE_PPP || IphAd->Type == IF_TYPE_SLIP)
        {
#ifdef HAVE_WANPACKET_API
                if (!WanPacketTestAdapter())
                        goto SkipAd;
#else
                goto SkipAd;
#endif
        
        }
        else
        {

                TRACE_PRINT1("Trying to open adapter %s to see if it's available...", TName);
                adapter = PacketOpenAdapterNPF(TName);

                if(adapter == NULL)
                {
                        // We are not able to open this adapter. Skip to the next one.
                        TRACE_PRINT1("PacketAddAdapterIPH: unable to open the adapter %s", TName);
                        goto SkipAd;
                }
                else
                {
                        TRACE_PRINT1("PacketAddAdapterIPH: adapter %s is available", TName);
                        PacketCloseAdapter(adapter);
                }
        }       
        
        // 
        // Adapter valid and not yet present in the list. Allocate the ADAPTER_INFO structure
        //
        TRACE_PRINT1("Adapter %s is available and should be added to the global list...", TName);

        TmpAdInfo = GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT, sizeof(ADAPTER_INFO));
        if (TmpAdInfo == NULL) 
        {
                TRACE_PRINT("PacketAddAdapterIPH: GlobalAlloc Failed allocating memory for the AdInfo");
                TRACE_EXIT("PacketAddAdapterIPH");
                return FALSE;
        }
        
        // Copy the device name
        StringCchCopyA(TmpAdInfo->Name,ADAPTER_NAME_LENGTH, TName);
        
        // Copy the description
        StringCchCopyA(TmpAdInfo->Description, ADAPTER_DESC_LENGTH, IphAd->Description);
        
        // Copy the MAC address
        TmpAdInfo->MacAddressLen = IphAd->AddressLength;
        
        memcpy(TmpAdInfo->MacAddress, 
                IphAd->Address, 
                (MAX_MAC_ADDR_LENGTH<MAX_ADAPTER_ADDRESS_LENGTH)? MAX_MAC_ADDR_LENGTH:MAX_ADAPTER_ADDRESS_LENGTH);
        
        // Calculate the number of IP addresses of this interface
        for(TmpAddrStr = &IphAd->IpAddressList, i = 0; TmpAddrStr != NULL; TmpAddrStr = TmpAddrStr->Next, i++)
        {
                
        }

        TmpAdInfo->NetworkAddresses = GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT, MAX_NETWORK_ADDRESSES * sizeof(npf_if_addr));
        if (TmpAdInfo->NetworkAddresses == NULL) {
                TRACE_PRINT("PacketAddAdapterIPH: GlobalAlloc Failed allocating the memory for the IP addresses in AdInfo.");
                GlobalFreePtr(TmpAdInfo);
                TRACE_EXIT("PacketAddAdapterIPH");
                return FALSE;
        }
        
        TRACE_PRINT1("Adding the IPv4 addresses to the adapter %s...", TName);
        // Scan the addresses, convert them to addrinfo structures and put each of them in the list
        for(TmpAddrStr = &IphAd->IpAddressList, i = 0; TmpAddrStr != NULL; TmpAddrStr = TmpAddrStr->Next)
        {
                TmpAddr = (struct sockaddr_in *)&(TmpAdInfo->NetworkAddresses[i].IPAddress);
                if((TmpAddr->sin_addr.S_un.S_addr = inet_addr(TmpAddrStr->IpAddress.String))!= INADDR_NONE)
                {
                        TmpAddr->sin_family = AF_INET;
                        TmpAddr = (struct sockaddr_in *)&(TmpAdInfo->NetworkAddresses[i].SubnetMask);
                        TmpAddr->sin_addr.S_un.S_addr = inet_addr(TmpAddrStr->IpMask.String);
                        TmpAddr->sin_family = AF_INET;
                        TmpAddr = (struct sockaddr_in *)&(TmpAdInfo->NetworkAddresses[i].Broadcast);
                        TmpAddr->sin_addr.S_un.S_addr = 0xffffffff; // Consider 255.255.255.255 as broadcast address since IP Helper API doesn't provide information about it
                        TmpAddr->sin_family = AF_INET;
                        i++;
                }
        }
        
        TmpAdInfo->NNetworkAddresses = i;
        
        
        TRACE_PRINT1("Adding the IPv6 addresses to the adapter %s...", TName);
        // Now Add IPv6 Addresses
        PacketAddIP6Addresses(TmpAdInfo);
        
        if(IphAd->Type == IF_TYPE_PPP || IphAd->Type == IF_TYPE_SLIP)
        {
                TRACE_PRINT("Flagging the adapter as NDISWAN.");
                // NdisWan adapter
                TmpAdInfo->Flags = INFO_FLAG_NDISWAN_ADAPTER;
        }
        
        // Update the AdaptersInfo list
        TmpAdInfo->Next = g_AdaptersInfoList;
        g_AdaptersInfoList = TmpAdInfo;
        
SkipAd:

        TRACE_EXIT("PacketAddAdapterIPH");
        return TRUE;
}

/*!
  \brief Updates the list of the adapters querying the IP Helper API.
  \return If the function succeeds, the return value is nonzero.

  This function populates the list of adapter descriptions, retrieving the information from a query to
  the IP Helper API. The IP Helper API is used as a support of the standard registry query method to obtain
  adapter information, so PacketGetAdaptersIPH() add only information about the adapters that were not 
  found by PacketGetAdapters().
*/
static BOOLEAN PacketGetAdaptersIPH()
{
        PIP_ADAPTER_INFO AdList = NULL;
        PIP_ADAPTER_INFO TmpAd;
        ULONG OutBufLen=0;

        TRACE_ENTER("PacketGetAdaptersIPH");

        // Find the size of the buffer filled by GetAdaptersInfo
        if(GetAdaptersInfo(AdList, &OutBufLen) == ERROR_NOT_SUPPORTED)
        {
                TRACE_PRINT("IP Helper API not supported on this system!");
                TRACE_EXIT("PacketGetAdaptersIPH");
                return FALSE;
        }

        TRACE_PRINT("PacketGetAdaptersIPH: retrieved needed bytes for IPH");

        // Allocate the buffer
        AdList = GlobalAllocPtr(GMEM_MOVEABLE, OutBufLen);
        if (AdList == NULL) 
        {
                TRACE_PRINT("PacketGetAdaptersIPH: GlobalAlloc Failed allocating the buffer for GetAdaptersInfo");
                TRACE_EXIT("PacketGetAdaptersIPH");
                return FALSE;
        }
        
        // Retrieve the adapters information using the IP helper API
        GetAdaptersInfo(AdList, &OutBufLen);
        
        TRACE_PRINT("PacketGetAdaptersIPH: retrieved list from IPH. Adding adapters to the global list.");

        // Scan the list of adapters obtained from the IP helper API, create a new ADAPTER_INFO
        // structure for every new adapter and put it in our global list
        for(TmpAd = AdList; TmpAd != NULL; TmpAd = TmpAd->Next)
        {
                PacketAddAdapterIPH(TmpAd);
        }
        
        GlobalFreePtr(AdList);

        TRACE_EXIT("PacketGetAdaptersIPH");
        return TRUE;
}

#endif // HAVE_IPHELPER_API


/*!
  \brief Adds an entry to the adapter description list.
  \param AdName Name of the adapter to add
  \return If the function succeeds, the return value is nonzero.

  Used by PacketGetAdapters(). Queries the registry to fill the PADAPTER_INFO describing the new adapter.
*/
static BOOLEAN PacketAddAdapterNPF(PCHAR AdName, UINT flags)
{
        //this function should acquire the g_AdaptersInfoMutex, since it's NOT called with an ADAPTER_INFO as parameter
        LONG            Status;
        LPADAPTER       adapter = NULL;
        PPACKET_OID_DATA  OidData = NULL;
        PADAPTER_INFO   TmpAdInfo;
        PADAPTER_INFO TAdInfo;  
        
        TRACE_ENTER("PacketAddAdapterNPF");
        TRACE_PRINT1("Trying to add adapter %s", AdName);
        
        //
        // let's check that the adapter name will fit in the space available within ADAPTER_INFO::Name
        // If not, simply fail, since we cannot properly save the adapter name
        //
        if (strlen(AdName) + 1 > sizeof(TmpAdInfo->Name))
        {
                TRACE_PRINT("PacketAddAdapterNPF: adapter name is too long to be stored into ADAPTER_INFO::Name, simply skip it");
                return FALSE;
        }

        WaitForSingleObject(g_AdaptersInfoMutex, INFINITE);
        
        for(TAdInfo = g_AdaptersInfoList; TAdInfo != NULL; TAdInfo = TAdInfo->Next)
        {
                if(strcmp(AdName, TAdInfo->Name) == 0)
                {
                        TRACE_PRINT("PacketAddAdapterNPF: Adapter already present in the list");
                        ReleaseMutex(g_AdaptersInfoMutex);
                        TRACE_EXIT("PacketAddAdapterNPF");
                        return TRUE;
                }
        }
        
        //here we could have released the mutex, but what happens if two threads try to add the same adapter? 
        //The adapter would be duplicated on the linked list
        
        if(flags != INFO_FLAG_DONT_EXPORT)
        {       
                TRACE_PRINT("Trying to open the NPF adapter and see if it's available...");

                // Try to Open the adapter
                adapter = PacketOpenAdapterNPF(AdName);
                
                if(adapter != NULL)
                {
                        
                        // Allocate a buffer to get the vendor description from the driver
                        OidData = GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT,512);
                        if (OidData == NULL) 
                        {
                                TRACE_PRINT("PacketAddAdapterNPF: GlobalAlloc Failed allocating the buffer for the OID request to obtain the NIC description. Returning.");                             
                                PacketCloseAdapter(adapter);
                                ReleaseMutex(g_AdaptersInfoMutex);
                                TRACE_EXIT("PacketAddAdapterNPF");
                                return FALSE;
                        }
                }
                else
                {
                        TRACE_PRINT("NPF Adapter not available, do not add it to the global list");
                        // We are not able to open this adapter. Skip to the next one.
                        ReleaseMutex(g_AdaptersInfoMutex);
                        TRACE_EXIT("AddAdapter");
                        return FALSE;
                }                       
        }

        
        //
        // PacketOpenAdapter was succesful. Consider this a valid adapter and allocate an entry for it
        // In the adapter list
        //
        
        TmpAdInfo = GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT, sizeof(ADAPTER_INFO));
        if (TmpAdInfo == NULL) 
        {
                TRACE_PRINT("AddAdapter: GlobalAlloc Failed");
        
                if(flags != INFO_FLAG_DONT_EXPORT)
                { 
                        TRACE_PRINT("AddAdapter: GlobalAlloc Failed allocating the buffer for the AdInfo to be added to the global list. Returning.");
                        if (OidData != NULL) GlobalFreePtr(OidData);
                        PacketCloseAdapter(adapter);
                }               
                
                ReleaseMutex(g_AdaptersInfoMutex);
                TRACE_EXIT("AddAdapter");
                return FALSE;
        }
        
        // Copy the device name
        strncpy(TmpAdInfo->Name, AdName, sizeof(TmpAdInfo->Name)/ sizeof(TmpAdInfo->Name[0]) - 1);

        //we do not need to terminate the string TmpAdInfo->Name, since we have left a char at the end, and
        //the memory for TmpAdInfo was zeroed upon allocation

        if(flags != INFO_FLAG_DONT_EXPORT)
        {
                // Retrieve the adapter description querying the NIC driver
                OidData->Oid = OID_GEN_VENDOR_DESCRIPTION;
                OidData->Length = 256;
                ZeroMemory(OidData->Data, 256);
                
                Status = PacketRequest(adapter, FALSE, OidData);
                
                if(Status==0 || ((char*)OidData->Data)[0]==0)
                {
                        TRACE_PRINT("AddAdapter: unable to get a valid adapter description from the NIC driver");
                }
                
                TRACE_PRINT1("Adapter Description = %s",OidData->Data);
                
                // Copy the description
                strncpy(TmpAdInfo->Description, (PCHAR)OidData->Data, sizeof(TmpAdInfo->Description)/ sizeof(TmpAdInfo->Description[0]) - 1);
                //we do not need to terminate the string TmpAdInfo->Description, since we have left a char at the end, and
                //the memory for TmpAdInfo was zeroed upon allocation
                
                Status = PacketGetLinkLayerFromRegistry(adapter, &(TmpAdInfo->LinkLayer));

                if (Status == FALSE)
                {
                        TRACE_PRINT("AddAdapter: PacketGetLinkLayerFromRegistry failed. Returning.");
                        PacketCloseAdapter(adapter);
                        GlobalFreePtr(OidData);
                        GlobalFreePtr(TmpAdInfo);
                        ReleaseMutex(g_AdaptersInfoMutex);
                        TRACE_EXIT("AddAdapter");
                        return FALSE;
                }
                
                // Retrieve the adapter MAC address querying the NIC driver
                OidData->Oid = OID_802_3_CURRENT_ADDRESS;       // XXX At the moment only Ethernet is supported.
                                                                                                        // Waiting a patch to support other Link Layers
                OidData->Length = 256;
                ZeroMemory(OidData->Data, 256);
                
                TRACE_PRINT("Trying to obtain the MAC address for the NIC...");
                Status = PacketRequest(adapter, FALSE, OidData);
                if(Status)
                {
                        memcpy(TmpAdInfo->MacAddress, OidData->Data, 6);
                        TmpAdInfo->MacAddressLen = 6;

                        TRACE_PRINT6("Successfully obtained the MAC address, it's "
                                "%.02x:%.02x:%.02x:%.02x:%.02x:%.02x",
                                TmpAdInfo->MacAddress[0],
                                TmpAdInfo->MacAddress[1],
                                TmpAdInfo->MacAddress[2],
                                TmpAdInfo->MacAddress[3],
                                TmpAdInfo->MacAddress[4],
                                TmpAdInfo->MacAddress[5]);


                }
                else
                {
                        TRACE_PRINT("Failed obtaining the MAC address, put a fake 00:00:00:00:00:00");
                        memset(TmpAdInfo->MacAddress, 0, 6);
                        TmpAdInfo->MacAddressLen = 0;
                }
                
                // Retrieve IP addresses
                TmpAdInfo->NetworkAddresses = GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT, MAX_NETWORK_ADDRESSES * sizeof(npf_if_addr));
                if (TmpAdInfo->NetworkAddresses == NULL) {
                        TRACE_PRINT("AddAdapter: GlobalAlloc Failed to allocate the buffer for the IP addresses in the AdInfo structure. Returning.");
                        PacketCloseAdapter(adapter);
                        GlobalFreePtr(OidData);
                        GlobalFreePtr(TmpAdInfo);
                        ReleaseMutex(g_AdaptersInfoMutex);
                        TRACE_EXIT("AddAdapter");
                        return FALSE;
                }
                
                TmpAdInfo->NNetworkAddresses = MAX_NETWORK_ADDRESSES;
                if(!PacketGetAddressesFromRegistry(TmpAdInfo->Name, TmpAdInfo->NetworkAddresses, (long*)&TmpAdInfo->NNetworkAddresses))
                {
#ifdef HAVE_IPHELPER_API
                        // Try to see if the interface has some IPv6 addresses
                        TmpAdInfo->NNetworkAddresses = 0; // We have no addresses because PacketGetAddressesFromRegistry() failed
                        
                        if(!PacketAddIP6Addresses(TmpAdInfo))
                        {
#endif // HAVE_IPHELPER_API
                                GlobalFreePtr(TmpAdInfo->NetworkAddresses);
                                TmpAdInfo->NetworkAddresses = NULL;
                                TmpAdInfo->NNetworkAddresses = 0;
#ifdef HAVE_IPHELPER_API
                        }
#endif // HAVE_IPHELPER_API
                }
                
#ifdef HAVE_IPHELPER_API
                // Now Add IPv6 Addresses
                PacketAddIP6Addresses(TmpAdInfo);
#endif // HAVE_IPHELPER_API
                
                TmpAdInfo->Flags = INFO_FLAG_NDIS_ADAPTER;      // NdisWan adapters are not exported by the NPF driver,
                                                                                                        // therefore it's impossible to see them here
                
                // Free storage
                PacketCloseAdapter(adapter);
                GlobalFreePtr(OidData);
        }
        else
        {
                // Write in the flags that this adapter is firewire
                // This will block it in all successive calls
                TmpAdInfo->Flags = INFO_FLAG_DONT_EXPORT;
        }
        
        // Update the AdaptersInfo list
        TmpAdInfo->Next = g_AdaptersInfoList;
        g_AdaptersInfoList = TmpAdInfo;
        
        ReleaseMutex(g_AdaptersInfoMutex);

        TRACE_EXIT("AddAdapter");
        return TRUE;
}


/*!
  \brief Updates the list of the adapters querying the registry.
  \return If the function succeeds, the return value is nonzero.

  This function populates the list of adapter descriptions, retrieving the information from the registry. 
*/
static BOOLEAN PacketGetAdaptersNPF()
{
        HKEY            LinkageKey,AdapKey, OneAdapKey;
        DWORD           RegKeySize=0;
        LONG            Status;
        ULONG           Result;
        INT                     i;
        DWORD           dim;
        DWORD           RegType;
        WCHAR           TName[256];
        CHAR            TAName[256];
        TCHAR           AdapName[256];
        CHAR            *TcpBindingsMultiString;
        UINT            FireWireFlag;
//  
//      Old registry based WinPcap names
//
//      CHAR            npfCompleteDriverPrefix[MAX_WINPCAP_KEY_CHARS];
//      UINT            RegQueryLen;

        CHAR            npfCompleteDriverPrefix[MAX_WINPCAP_KEY_CHARS] = NPF_DRIVER_COMPLETE_DEVICE_PREFIX;
        CHAR            DeviceGuidName[256];

        TRACE_ENTER("PacketGetAdaptersNPF");
        
//  
//      Old registry based WinPcap names
//
//      // Get device prefixes from the registry
//      RegQueryLen = sizeof(npfCompleteDriverPrefix)/sizeof(npfCompleteDriverPrefix[0]);
//      
//      if (QueryWinPcapRegistryStringA(NPF_DRIVER_COMPLETE_DEVICE_PREFIX_REG_KEY, npfCompleteDriverPrefix, &RegQueryLen, NPF_DRIVER_COMPLETE_DEVICE_PREFIX) == FALSE && RegQueryLen == 0)
//              return FALSE;

        Status=RegOpenKeyEx(HKEY_LOCAL_MACHINE,
                TEXT("SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}"),
                0,
                KEY_READ,
                &AdapKey);
        
        if ( Status != ERROR_SUCCESS ){
                TRACE_PRINT("PacketGetAdaptersNPF: RegOpenKeyEx ( Class\\{networkclassguid} ) Failed");
                goto tcpip_linkage;
        }

        i = 0;

        TRACE_PRINT("PacketGetAdaptersNPF: RegOpenKeyEx ( Class\\{networkclassguid} ) was successful");
        TRACE_PRINT("PacketGetAdaptersNPF: Cycling through the adapters in the registry:");

        // 
        // Cycle through the entries inside the {4D36E972-E325-11CE-BFC1-08002BE10318} key
        // To get the names of the adapters
        //
        while((Result = RegEnumKey(AdapKey, i, AdapName, sizeof(AdapName)/2)) == ERROR_SUCCESS)
        {
                i++;
                FireWireFlag = 0;

                // 
                // Get the adapter name from the registry key
                //
                Status=RegOpenKeyEx(AdapKey, AdapName, 0, KEY_READ, &OneAdapKey);
                if ( Status != ERROR_SUCCESS )
                {
                        TRACE_PRINT1("%d) RegOpenKey( OneAdapKey ) Failed, skipping the adapter.",i);
                        continue;                       
                }

                //
                //
                // Check if this is a FireWire adapter, looking for "1394" in its ComponentId string. 
                // We prevent listing FireWire adapters because winpcap can open them, but their interface
                // with the OS is broken and they can cause blue screens.
                //
                dim = sizeof(TName);
        Status = RegQueryValueEx(OneAdapKey, 
                        TEXT("ComponentId"),
                        NULL,
                        NULL,
                        (PBYTE)TName, 
                        &dim);

                if(Status == ERROR_SUCCESS)
                {
                        if(IsFireWire(TName))
                        {
                                FireWireFlag = INFO_FLAG_DONT_EXPORT;
                        }
                }

                Status=RegOpenKeyEx(OneAdapKey, TEXT("Linkage"), 0, KEY_READ, &LinkageKey);
                if (Status != ERROR_SUCCESS)
                {
                        RegCloseKey(OneAdapKey);
                        TRACE_PRINT1("%d) RegOpenKeyEx ( LinkageKey ) Failed, skipping the adapter",i);
                        continue;
                }
                
                dim = sizeof(DeviceGuidName);
        Status=RegQueryValueExA(LinkageKey, 
                        "Export", 
                        NULL, 
                        NULL, 
                        (PBYTE)DeviceGuidName, 
                        &dim);

                if(Status != ERROR_SUCCESS)
                {
                        RegCloseKey(OneAdapKey);
                        RegCloseKey(LinkageKey);
                        TRACE_PRINT1("%d) Name = SKIPPED (error reading the key)", i);
                        continue;
                }

                if (strlen(DeviceGuidName) >= strlen("\\Device\\"))
                {
                        // Put the \Device\NPF_ string at the beginning of the name
                        StringCchPrintfA(TAName, sizeof(TAName), "%s%s",
                        npfCompleteDriverPrefix,
                        DeviceGuidName + strlen("\\Device\\"));
                }
                else
                        continue;

                //terminate the string, just in case
                TAName[sizeof(TAName) - 1] = '\0';

                TRACE_PRINT2("%d) Successfully retrieved info for adapter %s, trying to add it to the global list...", i, TAName);
                // If the adapter is valid, add it to the list.
                PacketAddAdapterNPF(TAName, FireWireFlag);

                RegCloseKey(OneAdapKey);
                RegCloseKey(LinkageKey);
                
        } // while enum reg keys

        RegCloseKey(AdapKey);

tcpip_linkage:
        //
        // no adapters were found under {4D36E972-E325-11CE-BFC1-08002BE10318}. This means with great probability
        // that we are under Windows NT 4, so we try to look under the tcpip bindings.
        //
        
        TRACE_PRINT("Adapters not found under SYSTEM\\CurrentControlSet\\Control\\Class. Using the TCP/IP bindings.");
                
        Status = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
                TEXT("SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Linkage"),
                0,
                KEY_READ,
                &LinkageKey);

        if (Status == ERROR_SUCCESS)
        {
                // Retrieve the length of th binde key
                // This key contains the name of the devices as \device\foo
                //in ASCII, separated by a single '\0'. The list is terminated
                //by another '\0'
                Status=RegQueryValueExA(LinkageKey,
                        "bind",
                        NULL,
                        &RegType,
                        NULL,
                        &RegKeySize);

                // Allocate the buffer
                TcpBindingsMultiString = GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT, RegKeySize + 2);

                if (TcpBindingsMultiString == NULL)
                {
                        TRACE_PRINT("GlobalAlloc failed allocating memory for the registry key, returning.");
                        TRACE_EXIT("PacketGetAdaptersNPF");
                        return FALSE;
                }
                
                // Query the key again to get its content               
                Status = RegQueryValueExA(LinkageKey,
                        "bind",
                        NULL,
                        &RegType,
                        (LPBYTE)TcpBindingsMultiString,
                        &RegKeySize);
                
                RegCloseKey(LinkageKey);

                // Scan the buffer with the device names
                for(i = 0;;)
                {
                        if (TcpBindingsMultiString[i] == '\0')
                                break;
                        
                        StringCchPrintfA(TAName, sizeof(TAName), "%s%s", 
                                npfCompleteDriverPrefix,
                                TcpBindingsMultiString + i + strlen("\\Device\\"));

                        //
                        // TODO GV: this cast to avoid a compilation warning is
                        //                      actually stupid. We shouls check not to go over the buffer boundary!
                        // 
                        i += (INT)strlen(&TcpBindingsMultiString[i]) + 1;

                        TRACE_PRINT1("Successfully retrieved info for adapter %s, trying to add it to the global list...", TAName);

                        
                        // If the adapter is valid, add it to the list.
                        PacketAddAdapterNPF(TAName, 0);
                }
        
                GlobalFreePtr(TcpBindingsMultiString);
        }
        
        else{
#ifdef _WINNT4
                MessageBox(NULL,TEXT("Can not find TCP/IP bindings.\nIn order to run the packet capture driver you must install TCP/IP."),szWindowTitle,MB_OK);
                TRACE_PRINT("Cannot find the TCP/IP bindings on NT4, no adapters.");
                TRACE_EXIT("PacketGetAdaptersNPF");
                return FALSE;
#endif          
        }
        
        TRACE_EXIT("PacketGetAdaptersNPF");
        return TRUE;
}

#ifdef HAVE_AIRPCAP_API
/*!
  \brief Add an airpcap adapter to the adapters info list, gathering information from the airpcap dll
  \param name Name of the adapter.
  \param description description of the adapter.
  \return If the function succeeds, the return value is nonzero.
*/
static BOOLEAN PacketAddAdapterAirpcap(PCHAR name, PCHAR description)
{
        //this function should acquire the g_AdaptersInfoMutex, since it's NOT called with an ADAPTER_INFO as parameter
        CHAR ebuf[AIRPCAP_ERRBUF_SIZE];
        PADAPTER_INFO TmpAdInfo;
        PAirpcapHandle AirpcapAdapter;
        BOOL GllRes;
        AirpcapLinkType AirpcapLinkLayer;
        BOOLEAN Result = TRUE;

        TRACE_ENTER("PacketAddAdapterAirpcap");
        //XXX what about checking if the adapter already exists???
        
        WaitForSingleObject(g_AdaptersInfoMutex, INFINITE);

        do
        {
                
                //
                // check if the adapter is already there, and remove it
                //
                for (TmpAdInfo = g_AdaptersInfoList; TmpAdInfo != NULL; TmpAdInfo = TmpAdInfo->Next)
                {
                        if (TmpAdInfo->Flags == INFO_FLAG_AIRPCAP_CARD)
                        {
                                if (strcmp(TmpAdInfo->Name, name) == 0)
                                        break;
                        }
                }

                if (TmpAdInfo != NULL)
                {
                        //
                        // we already have it in the list. Just return
                        //
                        Result = TRUE;
                        break;
                }
                
                //
                // Allocate a descriptor for this adapter
                //                      
                //here we do not acquire the mutex, since we are not touching the list, yet.
                TmpAdInfo = GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT, sizeof(ADAPTER_INFO));
                if (TmpAdInfo == NULL) 
                {
                        TRACE_PRINT("PacketAddAdapterDag: GlobalAlloc Failed");
                        Result = FALSE;
                        break;
                }
                
                // Copy the device name and description
                StringCchCopyA(TmpAdInfo->Name, 
                        sizeof(TmpAdInfo->Name), 
                        name);
                
                StringCchCopyA(TmpAdInfo->Description, 
                        sizeof(TmpAdInfo->Description), 
                        description);
                
                TmpAdInfo->Flags = INFO_FLAG_AIRPCAP_CARD;
                
                if(g_PAirpcapOpen)
                {
                        AirpcapAdapter = g_PAirpcapOpen(name, ebuf);
                }
                else
                {
                        AirpcapAdapter = NULL;
                }
                
                if(!AirpcapAdapter)
                {
                        GlobalFreePtr(TmpAdInfo);
                        Result = FALSE;
                        break;
                }
                
                GllRes = g_PAirpcapGetLinkType(AirpcapAdapter, &AirpcapLinkLayer);
                if(!GllRes)
                {
                        g_PAirpcapClose(AirpcapAdapter);
                        GlobalFreePtr(TmpAdInfo);
                        Result = FALSE;
                        break;
                }
                
                switch(AirpcapLinkLayer) 
                { 
                case AIRPCAP_LT_802_11:
                        TmpAdInfo->LinkLayer.LinkType = (UINT)NdisMediumBare80211;
                        break;
                case AIRPCAP_LT_802_11_PLUS_RADIO:
                        TmpAdInfo->LinkLayer.LinkType = (UINT)NdisMediumRadio80211;
                        break;
                default:
                        TmpAdInfo->LinkLayer.LinkType = (UINT)NdisMediumNull; // Note: custom linktype, NDIS doesn't provide an equivalent
                        break;
                }                       
                
                //
                // For the moment, we always set the speed to 54Mbps, since the speed is not channel-specific,
                // but per packet
                //
                TmpAdInfo->LinkLayer.LinkSpeed = 54000000; 
                
                g_PAirpcapClose(AirpcapAdapter);
                
                // Update the AdaptersInfo list
                TmpAdInfo->Next = g_AdaptersInfoList;
                g_AdaptersInfoList = TmpAdInfo;
        }
        while(FALSE);

        ReleaseMutex(g_AdaptersInfoMutex);

        TRACE_EXIT("PacketAddAdapterAirpcap");
        return Result;
}

/*!
  \brief Updates the list of the adapters using the airpcap dll.
  \return If the function succeeds, the return value is nonzero.

  This function populates the list of adapter descriptions, looking for DAG cards on the system. 
*/
static BOOLEAN PacketGetAdaptersAirpcap()
{
        CHAR Ebuf[AIRPCAP_ERRBUF_SIZE];
        AirpcapDeviceDescription *Devs = NULL, *TmpDevs;
        UINT i;
        
        TRACE_ENTER("PacketGetAdaptersAirpcap");

        if(!g_PAirpcapGetDeviceList(&Devs, Ebuf))
        {
                // No airpcap cards found on this system
                TRACE_PRINT("No AirPcap adapters found");
                TRACE_EXIT("PacketGetAdaptersAirpcap");
                return FALSE;
        }
        else
        {
                for(TmpDevs = Devs, i = 0; TmpDevs != NULL; TmpDevs = TmpDevs->next)
                {
                        PacketAddAdapterAirpcap(TmpDevs->Name, TmpDevs->Description);
                }
        }
        
        g_PAirpcapFreeDeviceList(Devs);
        
        TRACE_EXIT("PacketGetAdaptersAirpcap");
        return TRUE;
}
#endif // HAVE_AIRPCAP_API

#ifdef HAVE_NPFIM_API

static BOOLEAN PacketAddAdapterNpfIm(PNPF_IM_DEVICE pDevice)
{
        //this function should acquire the g_AdaptersInfoMutex, since it's NOT called with an ADAPTER_INFO as parameter
        PADAPTER_INFO TmpAdInfo;
        NPF_IM_DEV_HANDLE handle = NULL;
        BYTE mac[6];
        DWORD macSize = 0;
        NDIS_MEDIUM medium = NdisMediumNull;
        ULONGLONG linkSpeed = 0;
        BOOL bResult = TRUE;
        PNPF_IM_ADDRESS pAddresses = NULL;
        DWORD addressesSize = 0;
        DWORD returnedBytes = 0;
        npf_if_addr *pnpf_if_addresses = NULL;
        DWORD numAddresses;
        DWORD i;

        TRACE_ENTER("PacketAddAdapterNpfIm");

        WaitForSingleObject(g_AdaptersInfoMutex, INFINITE);

        do
        {
                //
                // check if the adapter is already there, and remove it
                //
                for (TmpAdInfo = g_AdaptersInfoList; TmpAdInfo != NULL; TmpAdInfo = TmpAdInfo->Next)
                {
                        if (TmpAdInfo->Flags == INFO_FLAG_NPFIM_DEVICE)
                        {
                                if (strcmp(TmpAdInfo->Name, pDevice->Name) == 0)
                                        break;
                        }
                }

                if (TmpAdInfo != NULL)
                {
                        //
                        // we already have it in the list. Just return
                        //

                        //
                        // NOTE in this case we do not refresh the IP list
                        //
                        bResult = TRUE;
                        break;
                }

                do
                {
                        // 
                        // We suppose that the DLL has been loaded successfully
                        // 
                        bResult = g_NpfImHandlers.NpfImOpenDevice(pDevice->Name, &handle);
                        if (bResult == FALSE) break;

                        bResult = g_NpfImHandlers.NpfImGetMedium(handle, &medium);
                        if (bResult == FALSE) break;

                        if (medium == NdisMedium802_3 || medium == NdisMediumWan)
                        {
                                DWORD bufferSize = sizeof(mac);
                        
                                if (g_NpfImHandlers.NpfImIssueQueryOid(handle, OID_802_3_CURRENT_ADDRESS, mac, &bufferSize) == FALSE)
                                {
                                        macSize = 0;
                                }
                        }       

                        bResult = g_NpfImHandlers.NpfImGetLinkSpeed(handle, &linkSpeed);

                        if (bResult == FALSE)
                        {
                                break;
                        }

                        bResult = g_NpfImHandlers.NpfImGetIpAddresses(handle, NULL, 0, &returnedBytes);

                        if (bResult == TRUE)
                        {
                                //
                                // no ip addresses, return
                                //
                                break;
                        }

                        if (GetLastError() == ERROR_MORE_DATA)
                        {
                                pAddresses = (PNPF_IM_ADDRESS)LocalAlloc(LPTR, returnedBytes);
                                if (pAddresses == NULL)
                                {
                                        bResult = FALSE;
                                        break;
                                }

                                addressesSize = returnedBytes;
                                
                                bResult = g_NpfImHandlers.NpfImGetIpAddresses(handle, pAddresses, addressesSize, &returnedBytes);
                        }
                        else
                        {
                                // 
                                //unknown error listing the IP addresses
                                //
                                break;
                        }

                }
                while (FALSE);

                if (handle != NULL)
                        g_NpfImHandlers.NpfImCloseDevice(handle);

                if (bResult == FALSE)
                {
                        break;
                }

                numAddresses = returnedBytes / sizeof(NPF_IM_ADDRESS);

                //
                // Allocate a descriptor for this adapter
                //                      
                //here we do not acquire the mutex, since we are not touching the list, yet.
                TmpAdInfo = GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT, sizeof(ADAPTER_INFO));
                if (TmpAdInfo == NULL) 
                {
                        TRACE_PRINT("PacketAddAdapterNpfIm: GlobalAlloc Failed");
                        bResult = FALSE;
                        break;
                }

                if (numAddresses > 0)
                {
                        pnpf_if_addresses = (npf_if_addr*)GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT, sizeof(npf_if_addr) * numAddresses);

                        if (pnpf_if_addresses == NULL)
                        {
                                GlobalFreePtr(TmpAdInfo);
                                TRACE_PRINT("PacketAddAdapteNpfIm: GlobalAlloc failed");
                                bResult = FALSE;
                                break;
                        }
                
                        for (i = 0; i < numAddresses; i++)
                        {
                                DWORD ipAddr, netMask, broadCast;

                                CopyMemory(&(pnpf_if_addresses[i].IPAddress), &(pAddresses[i].IPAddress), sizeof(struct sockaddr_storage));

                                //
                                // generate the broadcast addr
                                switch(pAddresses[i].IPAddress.ss_family)
                                {
                                case AF_INET:
                                        CopyMemory(&(pnpf_if_addresses[i].SubnetMask), &(pAddresses[i].SubnetMask), sizeof(struct sockaddr_storage));
                                        CopyMemory(&(pnpf_if_addresses[i].Broadcast), &(pAddresses[i].SubnetMask), sizeof(struct sockaddr_storage));
                                        ipAddr = ((struct sockaddr_in*)(&pnpf_if_addresses[i].IPAddress))->sin_addr.S_un.S_addr;
                                        netMask = ((struct sockaddr_in*)(&pnpf_if_addresses[i].SubnetMask))->sin_addr.S_un.S_addr;
                                        broadCast = ipAddr | (~netMask);
                                        ((struct sockaddr_in*)(&pnpf_if_addresses[i].Broadcast))->sin_addr.S_un.S_addr = broadCast;
                                        break;

                                case AF_INET6:
                                default:
                                        ZeroMemory(&(pnpf_if_addresses[i].SubnetMask), sizeof(struct sockaddr_storage));
                                        ZeroMemory(&(pnpf_if_addresses[i].Broadcast),  sizeof(struct sockaddr_storage));
                                        break;
                                }
                        }

                        //
                        // put the ip addresses
                        //
                        TmpAdInfo->NetworkAddresses = pnpf_if_addresses;
                        TmpAdInfo->NNetworkAddresses = numAddresses;

                }



                // Copy the device name and description
                StringCchCopyA(TmpAdInfo->Name, 
                        sizeof(TmpAdInfo->Name), 
                        pDevice->Name);

                StringCchCopyA(TmpAdInfo->Description, 
                        sizeof(TmpAdInfo->Description), 
                        pDevice->Description);

                CopyMemory(TmpAdInfo->MacAddress, mac, macSize);
                TmpAdInfo->LinkLayer.LinkType = medium;
                
                TmpAdInfo->Flags = INFO_FLAG_NPFIM_DEVICE;
                
                TmpAdInfo->LinkLayer.LinkSpeed = linkSpeed;

                // Update the AdaptersInfo list
                TmpAdInfo->Next = g_AdaptersInfoList;
                g_AdaptersInfoList = TmpAdInfo;
        }
        while(FALSE);

        if (pAddresses != NULL) LocalFree(pAddresses);

        ReleaseMutex(g_AdaptersInfoMutex);

        TRACE_EXIT("PacketAddAdapterNpfIm");
        return (BOOLEAN)bResult;
}


/*!
  \brief Updates the list of the adapters using the NpfIm dll.
  \return If the function succeeds, the return value is nonzero.

  This function populates the list of adapter descriptions, looking for NpfIm adapters on the system. 
*/
static BOOLEAN PacketGetAdaptersNpfIm()
{
        PNPF_IM_DEVICE pDevices = NULL, pDevCursor;
        
        TRACE_ENTER("PacketGetAdaptersNpfIm");
        // 
        // We suppose that the DLL has been loaded successfully
        // 
        if (g_NpfImHandlers.NpfImGetDeviceList(&pDevices) == FALSE)
        {
                TRACE_EXIT("PacketGetAdaptersNpfIm");
                return FALSE;
        }

        for (pDevCursor = pDevices; pDevCursor != NULL; pDevCursor = pDevCursor->pNext)
        {
                PacketAddAdapterNpfIm(pDevCursor);
        }

    g_NpfImHandlers.NpfImFreeDeviceList(pDevices);
        
        TRACE_EXIT("PacketGetAdaptersNpfIm");
        return TRUE;
}

/*!
  \brief Add an npfim adapter to the adapters info list, gathering information from the npfim dll
  \param 
  \param description description of the adapter.
  \return If the function succeeds, the return value is nonzero.
*/
#endif // HAVE_NPFIM_API



#ifdef HAVE_DAG_API
/*!
  \brief Add a dag adapter to the adapters info list, gathering information from the dagc API
  \param name Name of the adapter.
  \param description description of the adapter.
  \return If the function succeeds, the return value is nonzero.
*/
BOOLEAN PacketAddAdapterDag(PCHAR name, PCHAR description, BOOLEAN IsAFile)
{
        //this function should acquire the g_AdaptersInfoMutex, since it's NOT called with an ADAPTER_INFO as parameter
        CHAR ebuf[DAGC_ERRBUF_SIZE];
        PADAPTER_INFO TmpAdInfo;
        dagc_t *dagfd;

        TRACE_ENTER("PacketAddAdapterDag");
        
        //XXX what about checking if the adapter already exists???
        
        //
        // Allocate a descriptor for this adapter
        //                      
        //here we do not acquire the mutex, since we are not touching the list, yet.
    TmpAdInfo = GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT, sizeof(ADAPTER_INFO));
        if (TmpAdInfo == NULL) 
        {
                TRACE_PRINT("PacketAddAdapterDag: GlobalAlloc Failed allocating memory for the AdInfo structure.");
                TRACE_EXIT("PacketAddAdapterDag");
                return FALSE;
        }

        // Copy the device name and description
        StringCchCopyA(TmpAdInfo->Name, 
                sizeof(TmpAdInfo->Name), 
                name);

        StringCchCopyA(TmpAdInfo->Description, 
                sizeof(TmpAdInfo->Description), 
                description);

        if(IsAFile)
                TmpAdInfo->Flags = INFO_FLAG_DAG_FILE;
        else
                TmpAdInfo->Flags = INFO_FLAG_DAG_CARD;

        if(g_p_dagc_open)
                dagfd = g_p_dagc_open(name, 0, ebuf);
        else
                dagfd = NULL;

        if(!dagfd)
        {
                GlobalFreePtr(TmpAdInfo);
                TRACE_EXIT("PacketAddAdapterDag");
                return FALSE;
        }

        TmpAdInfo->LinkLayer.LinkType = g_p_dagc_getlinktype(dagfd);

        switch(g_p_dagc_getlinktype(dagfd)) 
        {
        case TYPE_HDLC_POS:
                TmpAdInfo->LinkLayer.LinkType = (UINT)NdisMediumCHDLC; // Note: custom linktype, NDIS doesn't provide an equivalent
                break;
        case -TYPE_HDLC_POS:
                TmpAdInfo->LinkLayer.LinkType = (UINT)NdisMediumPPPSerial; // Note: custom linktype, NDIS doesn't provide an equivalent
                break;
        case TYPE_ETH:
                TmpAdInfo->LinkLayer.LinkType = (UINT)NdisMedium802_3;
                break;
        case TYPE_ATM: 
                TmpAdInfo->LinkLayer.LinkType = (UINT)NdisMediumAtm;
                break;
        default:
                TmpAdInfo->LinkLayer.LinkType = (UINT)NdisMediumNull; // Note: custom linktype, NDIS doesn't provide an equivalent
                break;
        }                       

        TmpAdInfo->LinkLayer.LinkSpeed = (g_p_dagc_getlinkspeed(dagfd) == -1)?
                100000000:  // Unknown speed, default to 100Mbit
        g_p_dagc_getlinkspeed(dagfd) * 1000000; 

        g_p_dagc_close(dagfd);

        WaitForSingleObject(g_AdaptersInfoMutex, INFINITE);

        // Update the AdaptersInfo list
        TmpAdInfo->Next = g_AdaptersInfoList;
        g_AdaptersInfoList = TmpAdInfo;

        ReleaseMutex(g_AdaptersInfoMutex);

        TRACE_EXIT("PacketAddAdapterDag");
        return TRUE;
}

/*!
  \brief Updates the list of the adapters using the DAGC API.
  \return If the function succeeds, the return value is nonzero.

  This function populates the list of adapter descriptions, looking for DAG cards on the system. 
*/
BOOLEAN PacketGetAdaptersDag()
{
        CHAR ebuf[DAGC_ERRBUF_SIZE];
        dagc_if_t *devs = NULL, *tmpdevs;
        UINT i;
        
        if(g_p_dagc_finddevs(&devs, ebuf))
                // No dag cards found on this system
                return FALSE;
        else
        {
                for(tmpdevs = devs, i=0; tmpdevs != NULL; tmpdevs = tmpdevs->next)
                {
                        PacketAddAdapterDag(tmpdevs->name, tmpdevs->description, FALSE);
                }
        }
        
        g_p_dagc_freedevs(devs);
        
        return TRUE;
}
#endif // HAVE_DAG_API

/*!
\brief Find the information about an adapter scanning the global ADAPTER_INFO list.
  \param AdapterName Name of the adapter whose information has to be retrieved.
  \return If the function succeeds, the return value is non-null.
*/
PADAPTER_INFO PacketFindAdInfo(PCHAR AdapterName)
{
        //this function should NOT acquire the g_AdaptersInfoMutex, since it does return an ADAPTER_INFO structure
        PADAPTER_INFO TAdInfo;

        TRACE_ENTER("PacketFindAdInfo");
        
        if (g_AdaptersInfoList == NULL)
        {
                TRACE_PRINT("Repopulating the adapters info list...");
                PacketPopulateAdaptersInfoList();
        }

        TAdInfo = g_AdaptersInfoList;
        
        while(TAdInfo != NULL)
        {
                if(strcmp(TAdInfo->Name, AdapterName) == 0) 
                {
                        TRACE_PRINT1("Found AdInfo for adapter %s", AdapterName);
                        break;
                }

                TAdInfo = TAdInfo->Next;
        }

        if (TAdInfo == NULL)
        {
                TRACE_PRINT1("NOT found AdInfo for adapter %s", AdapterName);
        }

        TRACE_EXIT("PacketFindAdInfo");
        return TAdInfo;
}



/*!
  \brief Updates information about an adapter in the global ADAPTER_INFO list.
  \param AdapterName Name of the adapter whose information has to be retrieved.
  \return If the function succeeds, the return value is TRUE. A false value means that the adapter is no
  more valid or that it is disconnected.
*/
BOOLEAN PacketUpdateAdInfo(PCHAR AdapterName)
{
        //this function should acquire the g_AdaptersInfoMutex, since it's NOT called with an ADAPTER_INFO as parameter
        PADAPTER_INFO TAdInfo, PrevAdInfo;

#ifdef HAVE_WANPACKET_API
        CHAR    FakeNdisWanAdapterName[MAX_WINPCAP_KEY_CHARS] = FAKE_NDISWAN_ADAPTER_NAME;
#endif

//  
//      Old registry based WinPcap names
//
//      UINT    RegQueryLen;
//      CHAR    FakeNdisWanAdapterName[MAX_WINPCAP_KEY_CHARS];
//
//      // retrieve the name for the fake ndis wan adapter
//      RegQueryLen = sizeof(FakeNdisWanAdapterName)/sizeof(FakeNdisWanAdapterName[0]);
//      if (QueryWinPcapRegistryStringA(NPF_FAKE_NDISWAN_ADAPTER_NAME_REG_KEY, FakeNdisWanAdapterName, &RegQueryLen, FAKE_NDISWAN_ADAPTER_NAME) == FALSE && RegQueryLen == 0)
//              return FALSE;
        
        TRACE_ENTER("PacketUpdateAdInfo");

        TRACE_PRINT1("Updating adapter info for adapter %s", AdapterName);
        
        WaitForSingleObject(g_AdaptersInfoMutex, INFINITE);
        
        PrevAdInfo = TAdInfo = g_AdaptersInfoList;

        //
        // If an entry for this adapter is present in the list, we destroy it
        //
        while(TAdInfo != NULL)
        {
                if(strcmp(TAdInfo->Name, AdapterName) == 0)
                {
#ifdef HAVE_WANPACKET_API
                        if (strcmp(AdapterName, FakeNdisWanAdapterName) == 0)
                        {
                                ReleaseMutex(g_AdaptersInfoMutex);
                                TRACE_EXIT("PacketUpdateAdInfo");
                                return TRUE;
                        }
#endif
                        if(TAdInfo == g_AdaptersInfoList)
                        {
                                g_AdaptersInfoList = TAdInfo->Next;
                        }
                        else
                        {
                                PrevAdInfo->Next = TAdInfo->Next;
                        }

                        if (TAdInfo->NetworkAddresses != NULL)
                                GlobalFreePtr(TAdInfo->NetworkAddresses);
                        GlobalFreePtr(TAdInfo);

                        break;
                }

                PrevAdInfo = TAdInfo;

                TAdInfo = TAdInfo->Next;
        }

        ReleaseMutex(g_AdaptersInfoMutex);

        //
        // Now obtain the information about this adapter
        //
        if(PacketAddAdapterNPF(AdapterName, 0) == TRUE)
        {
                TRACE_EXIT("PacketUpdateAdInfo");
                return TRUE;
        }

#ifdef HAVE_IPHELPER_API
        PacketGetAdaptersIPH();
#endif //HAVE_IPHELPER_API

#ifdef HAVE_NPFIM_API
        if (g_hNpfImDll != NULL)
        {
                PacketGetAdaptersNpfIm();
        }
        else
        {
                TRACE_PRINT("NpfIm extension not available");
        }
#endif //HAVE_NPFIM_API 

#ifdef HAVE_AIRPCAP_API
        if (g_PAirpcapGetDeviceList != NULL)
        {
                PacketGetAdaptersAirpcap();
        }
        else
        {
                TRACE_PRINT("AirPcap extension not available");
        }
#endif

#ifdef HAVE_WANPACKET_API
        PacketAddFakeNdisWanAdapter();
#endif //HAVE_WANPACKET_API

#ifdef HAVE_DAG_API
        if(g_p_dagc_open != NULL)       
        {
                PacketGetAdaptersDag();
        }
        else
        {
                TRACE_PRINT("Dag extension not available");
        }
#endif // HAVE_DAG_API

        TRACE_EXIT("PacketUpdateAdInfo");
        return TRUE;
}

/*!
  \brief Populates the list of the adapters.

  This function populates the list of adapter descriptions, invoking first PacketGetAdapters() and then
  PacketGetAdaptersIPH(). 
*/
void PacketPopulateAdaptersInfoList()
{
        //this function should acquire the g_AdaptersInfoMutex, since it's NOT called with an ADAPTER_INFO as parameter
        PADAPTER_INFO TAdInfo;
        PVOID Mem1, Mem2;

        TRACE_ENTER("PacketPopulateAdaptersInfoList");

        WaitForSingleObject(g_AdaptersInfoMutex, INFINITE);

        if(g_AdaptersInfoList)
        {
                // Free the old list
                TAdInfo = g_AdaptersInfoList;
                while(TAdInfo != NULL)
                {
                        Mem1 = TAdInfo->NetworkAddresses;
                        Mem2 = TAdInfo;
                        
                        TAdInfo = TAdInfo->Next;
                        
                        if (Mem1 != NULL)
                                GlobalFreePtr(Mem1);
                        GlobalFreePtr(Mem2);
                }
                
                g_AdaptersInfoList = NULL;
        }

        //
        // Fill the new list
        //
        if(!PacketGetAdaptersNPF())
        {
                // No info about adapters in the registry. (NDIS adapters, i.e. exported by NPF)
                TRACE_PRINT("PacketPopulateAdaptersInfoList: registry scan for adapters failed!");
        }

#ifdef HAVE_IPHELPER_API
        if(!PacketGetAdaptersIPH())
        {
                // IP Helper API not present. We are under WinNT 4 or TCP/IP is not installed
                TRACE_PRINT("PacketPopulateAdaptersInfoList: failed to get adapters from the IP Helper API!");
        }
#endif //HAVE_IPHELPER_API

#ifdef HAVE_WANPACKET_API
        if (!PacketAddFakeNdisWanAdapter())
        {
                TRACE_PRINT("PacketPopulateAdaptersInfoList: adding fake NdisWan adapter failed.");
        }
#endif // HAVE_WANPACKET_API

#ifdef HAVE_AIRPCAP_API
        if(g_PAirpcapGetDeviceList)     // Ensure that the airpcap dll is present
        {
                if(!PacketGetAdaptersAirpcap())
                {
                        TRACE_PRINT("PacketPopulateAdaptersInfoList: lookup of airpcap adapters failed!");
                }
        }
#endif // HAVE_AIRPCAP_API

#ifdef HAVE_NPFIM_API
        if (g_hNpfImDll != NULL)
        {
                if (!PacketGetAdaptersNpfIm()) // Ensure that the npfim dll is present
                {
                        TRACE_PRINT("PacketPopulateAdaptersInfoList: lookup of NpfIm adapters failed!");
                }
        }
#endif //HAVE_NPFIM_API

#ifdef HAVE_DAG_API
        if(g_p_dagc_open != NULL)       
        {
                if(!PacketGetAdaptersDag())
                {
                        // No info about adapters in the registry. 
                        TRACE_PRINT("PacketPopulateAdaptersInfoList: lookup of dag cards failed!");
                }
        }
#endif // HAVE_DAG_API

        ReleaseMutex(g_AdaptersInfoMutex);
        TRACE_EXIT("PacketPopulateAdaptersInfoList");
}

#ifdef HAVE_WANPACKET_API

static BOOLEAN PacketAddFakeNdisWanAdapter()
{
        //this function should acquire the g_AdaptersInfoMutex, since it's NOT called with an ADAPTER_INFO as parameter
        PADAPTER_INFO TmpAdInfo, SAdInfo;
//  
//      Old registry based WinPcap names
//
//      CHAR DialupName[MAX_WINPCAP_KEY_CHARS];
//      CHAR DialupDesc[MAX_WINPCAP_KEY_CHARS];
//      UINT RegQueryLen;
        CHAR DialupName[MAX_WINPCAP_KEY_CHARS] = FAKE_NDISWAN_ADAPTER_NAME;
        CHAR DialupDesc[MAX_WINPCAP_KEY_CHARS] = FAKE_NDISWAN_ADAPTER_DESCRIPTION;

        TRACE_ENTER("PacketAddFakeNdisWanAdapter");

//  
//      Old registry based WinPcap names
//
//      //
//      // Get name and description of the wan adapter from the registry
//      //
//      RegQueryLen = sizeof(DialupName)/sizeof(DialupName[0]);
//      if (QueryWinPcapRegistryStringA(NPF_FAKE_NDISWAN_ADAPTER_NAME_REG_KEY, DialupName, &RegQueryLen, FAKE_NDISWAN_ADAPTER_NAME) == FALSE && RegQueryLen == 0)
//              return FALSE;
//      
//      RegQueryLen = sizeof(DialupDesc)/sizeof(DialupDesc[0]);
//      if (QueryWinPcapRegistryStringA(NPF_FAKE_NDISWAN_ADAPTER_DESC_REG_KEY, DialupDesc, &RegQueryLen, FAKE_NDISWAN_ADAPTER_DESCRIPTION) == FALSE && RegQueryLen == 0)
//              return FALSE;

        // Scan the adapters list to see if this one is already present
        if (!WanPacketTestAdapter())
        {
                TRACE_PRINT("Cannot add the wan adapter, since it cannot be opened.");
                //the adapter cannot be opened, we do not list it, but we return t
                TRACE_EXIT("PacketAddFakeNdisWanAdapter");
                return FALSE;
        }

        WaitForSingleObject(g_AdaptersInfoMutex, INFINITE);
        
        for(SAdInfo = g_AdaptersInfoList; SAdInfo != NULL; SAdInfo = SAdInfo->Next)
        {
                if(strcmp(DialupName, SAdInfo->Name) == 0)
                {
                        TRACE_PRINT("PacketAddFakeNdisWanAdapter: Adapter already present in the list");
                        ReleaseMutex(g_AdaptersInfoMutex);
                        TRACE_EXIT("PacketAddFakeNdisWanAdapter");
                        return TRUE;
                }
        }

        TmpAdInfo = GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT, sizeof(ADAPTER_INFO));
        if (TmpAdInfo == NULL) 
        {
                TRACE_PRINT("PacketAddFakeNdisWanAdapter: GlobalAlloc Failed allocating memory for the AdInfo structure");
                ReleaseMutex(g_AdaptersInfoMutex);
                TRACE_EXIT("PacketAddFakeNdisWanAdapter");
                return FALSE;
        }

        strncpy(TmpAdInfo->Name, DialupName, sizeof(TmpAdInfo->Name) - 1);
        strncpy(TmpAdInfo->Description, DialupDesc, sizeof(TmpAdInfo->Description) - 1);
        TmpAdInfo->LinkLayer.LinkType = NdisMedium802_3;
        TmpAdInfo->LinkLayer.LinkSpeed = 10 * 1000 * 1000; //we emulate a fake 10MBit Ethernet
        TmpAdInfo->Flags = INFO_FLAG_NDISWAN_ADAPTER;
        memset(TmpAdInfo->MacAddress,'0',6);
        TmpAdInfo->MacAddressLen = 6;
        TmpAdInfo->NetworkAddresses = NULL;
        TmpAdInfo->NNetworkAddresses = 0;

        TmpAdInfo->Next = g_AdaptersInfoList;
        g_AdaptersInfoList = TmpAdInfo;
        ReleaseMutex(g_AdaptersInfoMutex);

        TRACE_EXIT("PacketAddFakeNdisWanAdapter");
        return TRUE;
}

#endif //HAVE_WANPACKET_API