dast.blog();

Wednesday, October 22, 2008 #

New Site ...

This blog is no longer updated, please visit my new site at http://danielstrigl.com.

posted @ Wednesday, October 22, 2008 6:42 PM | Feedback (0)

Friday, May 25, 2007 #

Combine Matlab and DirectShow

Some weeks ago I had the idea to combine Matlab and DirectShow, and here's the result ...

... a DirectShow filter that will use Matlab to transform a video stream.

The filter will accept the path to a M-File and the Variable Names of the Input and Output Frame.

When the DirectShow Filter Graph starts the "Matlab Video Filter" starts the Matlab Command Shell automatically in the background. For each frame the "Matlab Video Filter" load the Input Frame to a Matlab matrix, put the matrix to the Matlab Command Shell, execute the M-File, get the transformed matrix back from the Matlab Command Shell and copy it to the Output Frame.

The M-File used in the screenshot uses the "Canny Edge Filter" to extract the edges of the video stream and plot the histogram of the Input Frame:

 FrameOut = im2uint8(edge(FrameIn, 'canny'));

            imhist(FrameIn); 

There are two versions of the "Matlab Video Filter", one for 8 Bit Grayscale video streams and one for RGB 24 video streams.

Both Microsoft Visual Studio 2005 projects of the filters can be found here:

posted @ Friday, May 25, 2007 4:13 AM | Feedback (1)

Friday, May 11, 2007 #

My second DirectShow filter

Today I have finished my second DirectShow filter, a Transform filter to convert a RGB video stream to Grayscale.

The whole Microsoft Visual Studio 2005 project can be downloaded from here.

posted @ Friday, May 11, 2007 10:01 AM | Feedback (0)

Friday, May 04, 2007 #

My first DirectShow filter

This week I have created my first DirectShow filter, a simple TransInPlace filter that will add a logo to a video stream.

The whole Microsoft Visual Studio 2005 project can be downloaded from here.

posted @ Friday, May 04, 2007 7:14 AM | Feedback (1)

Thursday, November 30, 2006 #

How to scan for wireless access points on a Pocket PC?

I have also written a little Win32 console application in C++ that will show how to do it, to run it you have to install the PocketConsole from SymbolicTools:

// accesspoints.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <windows.h>
#include <commctrl.h>
#include <stdlib.h>
#include <ntddndis.h>
#include <nuiouser.h>
#include <winioctl.h>
#include "strconv.h"

int _tmain(int argc, _TCHAR* argv[])
{
    if (argc < 2)
    {
        printf("Usage: accesspoints <adapter name> [delay in ms]\n");
        printf("       <adapter name> name of the wireless adapter\n");
        printf("       [delay in ms]  delay between scan and list query\n");
        return -1;
    }

LPCTSTR pszAdapter = argv[1];

HANDLE hDevice = CreateFile(
        NDISUIO_DEVICE_NAME, GENERIC_READ, 
        FILE_SHARE_READ | FILE_SHARE_WRITE, 
        NULL, OPEN_EXISTING, 
        FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED,
        NULL);

if (hDevice == INVALID_HANDLE_VALUE)
    {
        DWORD dwError = GetLastError();

printf("Function \"CreateFile\" failed (0x%08x).\n", dwError);
        return -2;
    }

DWORD dwBytesReturned = 0;

NDISUIO_QUERY_OID NDISUIOQueryOid = {0};
    NDISUIOQueryOid.ptcDeviceName = (PTCHAR) pszAdapter;
    NDISUIOQueryOid.Oid = OID_GEN_PHYSICAL_MEDIUM;

if (!DeviceIoControl(
        hDevice, IOCTL_NDISUIO_QUERY_OID_VALUE,
        &NDISUIOQueryOid, sizeof(NDISUIOQueryOid),
        &NDISUIOQueryOid, sizeof(NDISUIOQueryOid),
        &dwBytesReturned, NULL))
    {
        DWORD dwError = GetLastError();

CloseHandle(hDevice);
        printf("Function \"DeviceIoControl\" (OID_GEN_PHYSICAL_MEDIUM) failed (0x%08x).\n", 
            dwError);
        return -3;
    }

if (*((PNDIS_PHYSICAL_MEDIUM) NDISUIOQueryOid.Data) != NdisPhysicalMediumWirelessLan)
    {
        CloseHandle(hDevice);
        printf("Device \"%s\" is no wireless adapter.\n", CTtoA(pszAdapter));
        return -4;
    }

CTtoW deviceName(pszAdapter);

if (!DeviceIoControl(
        hDevice, IOCTL_NDISUIO_OPEN_DEVICE,
        (LPVOID)(LPCWSTR) deviceName,
        deviceName.GetLength() * sizeof(WCHAR),
        NULL, 0, &dwBytesReturned, NULL))
    {
        DWORD dwError = GetLastError();

CloseHandle(hDevice);
        printf("Function \"DeviceIoControl\" (IOCTL_NDISUIO_OPEN_DEVICE) failed (0x%08x).\n", 
            dwError);
        return -5;
    }

NDISUIO_SET_OID NDISUIOSetOid = {0};  
    NDISUIOSetOid.ptcDeviceName = (PTCHAR) pszAdapter;  
    NDISUIOSetOid.Oid = OID_802_11_BSSID_LIST_SCAN;

if (!DeviceIoControl(  
        hDevice, IOCTL_NDISUIO_SET_OID_VALUE,   
        &NDISUIOSetOid, sizeof(NDISUIOSetOid),   
        NULL, 0,   
        &dwBytesReturned, NULL))  
    {  
        DWORD dwError = GetLastError();  
  
        CloseHandle(hDevice);  
        printf("Function \"DeviceIoControl\" (OID_802_11_BSSID_LIST_SCAN) failed (0x%08x).\n",   
            dwError);  
        return -6;  
    }

if (argc >= 3)
    {
        Sleep((DWORD)_ttoi(argv[2]));
    }

for (int i = 1;; ++i)
    {
        const DWORD queryMemSize = sizeof(NDISUIO_QUERY_OID) + sizeof(NDIS_WLAN_BSSID_EX) * i;
        PNDISUIO_QUERY_OID pNDISUIOQueryOid = (PNDISUIO_QUERY_OID) malloc(queryMemSize);

pNDISUIOQueryOid->ptcDeviceName = (PTCHAR) pszAdapter;
        pNDISUIOQueryOid->Oid = OID_802_11_BSSID_LIST;

if (!DeviceIoControl(
            hDevice, IOCTL_NDISUIO_QUERY_OID_VALUE, 
            pNDISUIOQueryOid, queryMemSize, 
            pNDISUIOQueryOid, queryMemSize, 
            &dwBytesReturned, NULL))
        {
            DWORD dwError = GetLastError();

free(pNDISUIOQueryOid);

if (dwError == ERROR_INVALID_USER_BUFFER ||
                dwError == ERROR_INSUFFICIENT_BUFFER)
                continue;

CloseHandle(hDevice);
            printf("Function \"DeviceIoControl\" (OID_802_11_BSSID_LIST) failed (0x%08x).\n", 
                dwError);
            return -7;
        }

PNDIS_802_11_BSSID_LIST_EX pBssidList = (PNDIS_802_11_BSSID_LIST_EX) pNDISUIOQueryOid->Data;

const int accessPointsCnt = (int) pBssidList->NumberOfItems;

printf("Found %d access point(s).\n", accessPointsCnt);

PNDIS_WLAN_BSSID_EX pBssid = pBssidList->Bssid;

for (int j = 0; j < accessPointsCnt; ++j)
        {
            printf("\n");

printf("MacAddress        : %02X-%02X-%02X-%02X-%02X-%02X\n",
                pBssid->MacAddress[0], pBssid->MacAddress[1],
                pBssid->MacAddress[2], pBssid->MacAddress[3],
                pBssid->MacAddress[4], pBssid->MacAddress[5]);

char* pSSID = (char*) malloc(pBssid->Ssid.SsidLength + 1);
            memcpy(pSSID, pBssid->Ssid.Ssid, pBssid->Ssid.SsidLength);
            pSSID[pBssid->Ssid.SsidLength] = '\0';
            printf("Ssid              : %s\n", pSSID);
            free(pSSID);

printf("Privacy           : %s\n", pBssid->Privacy ? "Yes" : "No");
            printf("Rssi              : %ld dBm\n", pBssid->Rssi);
            printf("NetworkTypeInUse  : %s\n", 
                pBssid->NetworkTypeInUse == Ndis802_11FH ? "Ndis802_11FH" : 
                pBssid->NetworkTypeInUse == Ndis802_11DS ? "Ndis802_11DS" :
                "<unknown>");
            printf("BeaconPeriod      : %lu Kusec\n", pBssid->Configuration.BeaconPeriod);
            printf("ATIMWindow        : %lu Kusec\n", pBssid->Configuration.ATIMWindow);

if (pBssid->NetworkTypeInUse == Ndis802_11DS)
            {
                printf("DSConfig          : %lu kHz\n", pBssid->Configuration.DSConfig);
            }
            else if (pBssid->NetworkTypeInUse == Ndis802_11FH)
            {
                printf("HopPattern        : %lu\n", pBssid->Configuration.FHConfig.HopPattern);
                printf("HopSet            : %lu\n", pBssid->Configuration.FHConfig.HopSet);
                printf("DwellTime         : %lu Kusec\n", pBssid->Configuration.FHConfig.DwellTime);
            }

printf("InfrastructureMode: %s\n",
                pBssid->InfrastructureMode == Ndis802_11IBSS ? "Ndis802_11IBSS" :
                pBssid->InfrastructureMode == Ndis802_11Infrastructure ? "Ndis802_11Infrastructure" :
                pBssid->InfrastructureMode == Ndis802_11AutoUnknown ? "Ndis802_11AutoUnknown" :
                "<unknown>");

printf("SupportedRates    : [0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x]\n",
                pBssid->SupportedRates[0], pBssid->SupportedRates[1], pBssid->SupportedRates[2], 
                pBssid->SupportedRates[3], pBssid->SupportedRates[4], pBssid->SupportedRates[5], 
                pBssid->SupportedRates[6], pBssid->SupportedRates[7]);

printf("                    BSSBasicRateSet (Mbps):");
            for (int n = 0; n < 8; ++n)
            {
                if (pBssid->SupportedRates[n] & 0x80)
                    printf(" %.1f", (pBssid->SupportedRates[n] & 0x7f) * 0.5f);
            }
            printf("\n");

printf("                    Others (Mbps):");
            for (int n = 0; n < 8; ++n)
            {
                if (!(pBssid->SupportedRates[n] & 0x80))
                    printf(" %.1f", (pBssid->SupportedRates[n] & 0x7f) * 0.5f);
            }
            printf("\n");

if (pBssid->Length >= sizeof(NDIS_802_11_BSSID_LIST_EX) && pBssid->IELength > 0)
            {
                printf("IEs               : [");
                for (ULONG n = 0; n < pBssid->IELength; ++n)
                {
                    printf("0x%02x", pBssid->IEs[n]);
                    if (n < pBssid->IELength - 1)
                        printf(", ");
                }
                printf("]\n");
            }
            
            pBssid = (PNDIS_WLAN_BSSID_EX) ((LPBYTE) pBssid + pBssid->Length);
        }

free(pNDISUIOQueryOid);

CloseHandle(hDevice);

return accessPointsCnt;
    }
}

The following image shows the output of the application running on our HP iPAQ hx2490b:

posted @ Thursday, November 30, 2006 5:31 PM | Feedback (1)

Wednesday, January 03, 2007 #

My own WiFi Status Monitor

I have written a little MFC application that display some properties about the current association, like

the value of the received signal strength indication (RSSI),
the service set identifier (SSID) of the BSS,
the media access control (MAC) address of the access point and
the IP address associated with the WiFi adapter.

You will find the application under WiFiStatus.zip.

posted @ Wednesday, January 03, 2007 2:31 PM | Feedback (1)

Tuesday, January 02, 2007 #

How to connect to an WEP encrypted access point using NDISUIO?

The steps to connect to an WEP encrypted access point using NDISUIO are:

Disassociate from the current service set (OID_802_11_DISASSOCIATE).
Set network mode to Ndis802_11Infrastructure (OID_802_11_INFRASTRUCTURE_MODE).
Set privacy filter mode to Ndis802_11PrivFilterAcceptAll (OID_802_11_PRIVACY_FILTER).
Set the Wired Equivalent Privacy (WEP) keys (OID_802_11_ADD_WEP).
Set authentication mode to Ndis802_11AuthModeOpen, Ndis802_11AuthModeShared or Ndis802_11AuthModeAutoSwitch (OID_802_11_AUTHENTICATION_MODE).
Set encryption mode to Ndis802_11Encryption1Enabled (OID_802_11_ENCRYPTION_STATUS).
Set the service set identifier (SSID) to associate with (OID_802_11_SSID).
Optional: If you want to connect to a specific access point, set the media access control (MAC) address of the access point (OID_802_11_BSSID).
Wait for the NDISUIO_NOTIFICATION_MEDIA_CONNECT event (IOCTL_NDISUIO_REQUEST_NOTIFICATION).

If "Using DHCP" is chosen for the wireless network adapter you have also to renew the IP address.

I have written a console application that will show how to connect to an WEP encrypted access point using NDISUIO and a small console application to renew the IP address:

posted @ Tuesday, January 02, 2007 3:23 PM | Feedback (0)

Saturday, December 23, 2006 #

How to connect to an open access point using NDISUIO?

The steps to connect to an open access point without any encryption using NDISUIO are (see also 802.11 Network Association):

Disassociate from the current service set (OID_802_11_DISASSOCIATE).
Set network mode to Ndis802_11Infrastructure (OID_802_11_INFRASTRUCTURE_MODE).
Set privacy filter mode to Ndis802_11PrivFilterAcceptAll (OID_802_11_PRIVACY_FILTER).
Set authentication mode to Ndis802_11AuthModeOpen (OID_802_11_AUTHENTICATION_MODE).
Set encryption mode to Ndis802_11EncryptionDisabled (OID_802_11_ENCRYPTION_STATUS).
Set the service set identifier (SSID) to associate with (OID_802_11_SSID).
Optional: If you want to connect to a specific access point, set the media access control (MAC) address of the access point (OID_802_11_BSSID).
Wait for the NDISUIO_NOTIFICATION_MEDIA_CONNECT event (IOCTL_NDISUIO_REQUEST_NOTIFICATION).

If "Using DHCP" is chosen for the wireless network adapter you have also to renew the IP address.

I have written a console application that will show how to connect to an open access point using NDISUIO and a small console application to renew the IP address:

posted @ Saturday, December 23, 2006 3:40 PM | Feedback (0)

Tuesday, December 26, 2006 #

How to get supported authentication and encryption capabilities of an wireless adapter?

The following sample application, written in C++, will show how to do it:

// capability.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <windows.h>
#include <commctrl.h>
#include <ntddndis.h>
#include <nuiouser.h>
#include <winioctl.h>

#define OID_802_11_CAPABILITY 0x0d010122

typedef enum 
{
    Ndis802_11AuthModeWPA2 = Ndis802_11AuthModeWPANone + 1,
    Ndis802_11AuthModeWPA2PSK,
};

typedef struct _NDIS_802_11_AUTHENTICATION_ENCRYPTION 
{
    NDIS_802_11_AUTHENTICATION_MODE AuthModeSupported;
    NDIS_802_11_ENCRYPTION_STATUS EncryptStatusSupported;
} NDIS_802_11_AUTHENTICATION_ENCRYPTION, 
 *PNDIS_802_11_AUTHENTICATION_ENCRYPTION;

typedef struct _NDIS_802_11_CAPABILITY 
{
    ULONG Length;
    ULONG Version;
    ULONG NoOfPMKIDs;
    ULONG NoOfAuthEncryptPairSupported;
    NDIS_802_11_AUTHENTICATION_ENCRYPTION
        AuthenticationEncryptionSupported[1];
} NDIS_802_11_CAPABILITY, *PNDIS_802_11_CAPABILITY;

int _tmain(int argc, _TCHAR* argv[])
{
    if (argc < 2)
    {
        printf("Usage: capability <adapter name>\n");
        printf("       <adapter name> name of the wireless adapter\n");
        return -1;
    }

LPCTSTR pszAdapter = argv[1];

if (hDevice == INVALID_HANDLE_VALUE)
    {
        DWORD dwError = GetLastError();

printf("Function \"CreateFile\" failed (0x%08x).\n", dwError);
        return -2;
    }

DWORD dwBytesReturned = 0;

BYTE buf[512];
    PNDISUIO_QUERY_OID pNDISUIOQueryOid = (PNDISUIO_QUERY_OID) buf;
    pNDISUIOQueryOid->ptcDeviceName = (PTCHAR) pszAdapter;
    pNDISUIOQueryOid->Oid = OID_802_11_CAPABILITY;

if (!DeviceIoControl(
        hDevice, IOCTL_NDISUIO_QUERY_OID_VALUE, 
        pNDISUIOQueryOid, sizeof(buf), 
        pNDISUIOQueryOid, sizeof(buf), 
        &dwBytesReturned, NULL))
    {
        DWORD dwError = GetLastError();

CloseHandle(hDevice);
        printf("Function \"DeviceIoControl\" (OID_802_11_CAPABILITY) failed (0x%08x).\n", 
            dwError);
        return -3;
    }

PNDIS_802_11_CAPABILITY pCap = (PNDIS_802_11_CAPABILITY) pNDISUIOQueryOid->Data;

if (pCap->Version != 2) 
    {
        CloseHandle(hDevice);
        printf("Unsupported OID_802_11_CAPABILITY data (ver %d).\n", pCap->Version);
        return -4;
    }

for (ULONG i = 0; i < pCap->NoOfAuthEncryptPairSupported; ++i)
    {
        NDIS_802_11_AUTHENTICATION_MODE authMode = 
            pCap->AuthenticationEncryptionSupported[i].AuthModeSupported;
        NDIS_802_11_ENCRYPTION_STATUS encStat = 
            pCap->AuthenticationEncryptionSupported[i].EncryptStatusSupported;

if (authMode == Ndis802_11AuthModeOpen && 
            encStat == Ndis802_11EncryptionDisabled)
        {
            printf("Open System: none\n");
        }
        else if (authMode == Ndis802_11AuthModeOpen && 
                 encStat == Ndis802_11Encryption1Enabled)
        {
            printf("Open System: WEP\n");
        }
        else if (authMode == Ndis802_11AuthModeShared && 
                 encStat == Ndis802_11EncryptionDisabled)
        {
            printf("Shared Key: none\n");
        }
        else if (authMode == Ndis802_11AuthModeShared && 
                 encStat == Ndis802_11Encryption1Enabled)
        {
            printf("Shared Key: WEP\n");
        }
        else if (authMode == Ndis802_11AuthModeWPA && 
                 encStat == Ndis802_11Encryption2Enabled)
        {
            printf("WPA: TKIP\n");
        }
        else if (authMode == Ndis802_11AuthModeWPA && 
                 encStat == Ndis802_11Encryption3Enabled)
        {
            printf("WPA: AES\n");
        }
        else if (authMode == Ndis802_11AuthModeWPAPSK && 
                 encStat == Ndis802_11Encryption2Enabled)
        {
            printf("WPA-PSK: TKIP\n");
        }
        else if (authMode == Ndis802_11AuthModeWPAPSK && 
                 encStat == Ndis802_11Encryption3Enabled)
        {
            printf("WPA-PSK: AES\n");
        }
        else if (authMode == Ndis802_11AuthModeWPANone && 
                 encStat == Ndis802_11EncryptionDisabled)
        {
            printf("WPA-None: none\n");
        }
        else if (authMode == Ndis802_11AuthModeWPANone && 
                 encStat == Ndis802_11Encryption2Enabled)
        {
            printf("WPA-None: TKIP\n");
        }
        else if (authMode == Ndis802_11AuthModeWPANone && 
                 encStat == Ndis802_11Encryption3Enabled)
        {
            printf("WPA-None: AES\n");
        }
        else if (authMode == Ndis802_11AuthModeWPA2 && 
                 encStat == Ndis802_11Encryption2Enabled)
        {
            printf("WPA2: TKIP\n");
        }
        else if (authMode == Ndis802_11AuthModeWPA2 && 
                 encStat == Ndis802_11Encryption3Enabled)
        {
            printf("WPA2: AES\n");
        }
        else if (authMode == Ndis802_11AuthModeWPA2PSK && 
                 encStat == Ndis802_11Encryption2Enabled)
        {
            printf("WPA-PSK2: TKIP\n");
        }
        else if (authMode == Ndis802_11AuthModeWPA2PSK && 
                 encStat == Ndis802_11Encryption3Enabled)
        {
            printf("WPA-PSK2: AES\n");
        }
        else
        {
            printf("<unknown> (auth = %d, encr = %d)\n", 
                authMode, encStat);
        }
    }

CloseHandle(hDevice);

return 0;
}

The following image shows the supported authentication and encryption capabilities of our HP iPAQ hx2490b:

posted @ Tuesday, December 26, 2006 8:52 PM | Feedback (1)

Friday, November 24, 2006 #

How to list installed network adapters on a Pocket PC and detect if they are wireless?

I have written a little Win32 console application in C++ that will show how to do it, to run it you have to install the PocketConsole from SymbolicTools:

// adapters.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <windows.h>
#include <commctrl.h>
#include <iphlpapi.h>
#include <time.h>
#include <ntddndis.h>
#include <nuiouser.h>
#include <winioctl.h>
#include "strconv.h"

/*
 * Windows CE does not have a localtime() function, so create a substitute.
 * See SQLite WinCE Port [http://sourceforge.net/projects/sqlite-wince/].
 */
struct tm* localtime(const time_t* t)
{
    static struct tm y;
    FILETIME uTm, lTm;
    SYSTEMTIME pTm;
    __int64 t64;
    t64 = *t;
    t64 = (t64 + 11644473600) * 10000000;
    uTm.dwLowDateTime = (DWORD)(t64 & 0xFFFFFFFF);
    uTm.dwHighDateTime= (DWORD)(t64 >> 32);
    FileTimeToLocalFileTime(&uTm, &lTm);
    FileTimeToSystemTime(&lTm, &pTm);
    y.tm_year = pTm.wYear - 1900;
    y.tm_mon = pTm.wMonth - 1;
    y.tm_wday = pTm.wDayOfWeek;
    y.tm_mday = pTm.wDay;
    y.tm_hour = pTm.wHour;
    y.tm_min = pTm.wMinute;
    y.tm_sec = pTm.wSecond;
    return &y;
}

BOOL IsWireless(LPCTSTR pszAdapter, LPBOOL pbIsWireless)
{
    HANDLE hDevice = CreateFile(
        NDISUIO_DEVICE_NAME, GENERIC_READ, 
        FILE_SHARE_READ | FILE_SHARE_WRITE, 
        NULL, OPEN_EXISTING, 
        FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED,
        NULL);

if (hDevice == INVALID_HANDLE_VALUE)
    {
        DWORD dwError = GetLastError();

printf("Function \"CreateFile\" failed (0x%08x).\n", dwError);
        return FALSE;
    }

DWORD dwBytesReturned = 0;
    NDISUIO_QUERY_OID NDISUIOQueryOid;
    NDISUIOQueryOid.ptcDeviceName = (PTCHAR) pszAdapter;
    NDISUIOQueryOid.Oid = OID_802_11_WEP_STATUS;

*pbIsWireless = DeviceIoControl(
        hDevice, IOCTL_NDISUIO_QUERY_OID_VALUE, 
        &NDISUIOQueryOid, sizeof(NDISUIOQueryOid), 
        &NDISUIOQueryOid, sizeof(NDISUIOQueryOid), 
        &dwBytesReturned, NULL);

CloseHandle(hDevice);

return TRUE;
}

int _tmain(int argc, _TCHAR* argv[])
{
    DWORD dwRetVal;
    ULONG ulOutBufLen = 0;

if ((dwRetVal = GetAdaptersInfo(NULL, &ulOutBufLen)) != ERROR_BUFFER_OVERFLOW)
    {
        if (dwRetVal == ERROR_NO_DATA)
            printf("No adapter information exists for the local computer.\n");
        else
            printf("Function \"GetAdaptersInfo\" failed (0x%08x).\n", dwRetVal);

return -1;
    }

IP_ADAPTER_INFO* pAdapterInfo = (IP_ADAPTER_INFO*) malloc(ulOutBufLen);

if ((dwRetVal = GetAdaptersInfo(pAdapterInfo, &ulOutBufLen)) != ERROR_SUCCESS)
    {
        free(pAdapterInfo);

if (dwRetVal == ERROR_NO_DATA)
            printf("No adapter information exists for the local computer.\n");
        else
            printf("Function \"GetAdaptersInfo\" failed (0x%08x).\n", dwRetVal);

return -2;
    }

while (pAdapterInfo != NULL)
    {
        printf("Adapter Name    : %s\n", pAdapterInfo->AdapterName);
        printf("Description     : %s\n", pAdapterInfo->Description);
        printf("MAC Address     : %02X-%02X-%02X-%02X-%02X-%02X\n",
            pAdapterInfo->Address[0], pAdapterInfo->Address[1],
            pAdapterInfo->Address[2], pAdapterInfo->Address[3],
            pAdapterInfo->Address[4], pAdapterInfo->Address[5]);
        printf("IP Address      : %s\n", 
            pAdapterInfo->IpAddressList.IpAddress.String);
        printf("Subnet Mask     : %s\n", 
            pAdapterInfo->IpAddressList.IpMask.String);
        printf("Gateway         : %s\n", 
            pAdapterInfo->GatewayList.IpAddress.String);

BOOL bIsWireless;
        printf("Is Wireless     : %s\n",
            IsWireless(CAtoT(pAdapterInfo->AdapterName), &bIsWireless) ? 
            bIsWireless ? "Yes" : "No" : "<unknown>");

if (pAdapterInfo->DhcpEnabled) 
        {
            printf("DHCP Enabled    : Yes\n");
            printf("DHCP Server     : %s\n", 
                pAdapterInfo->DhcpServer.IpAddress.String);

struct tm* t = localtime(&(pAdapterInfo->LeaseObtained));
            printf("Lease Obtained  : %02d.%02d.%04d %02d:%02d:%02d\n", 
                t->tm_mday, t->tm_mon + 1, t->tm_year + 1900,
                t->tm_hour, t->tm_min, t->tm_sec);

t = localtime(&(pAdapterInfo->LeaseExpires));
            printf("Lease Expires   : %02d.%02d.%04d %02d:%02d:%02d\n", 
                t->tm_mday, t->tm_mon + 1, t->tm_year + 1900,
                t->tm_hour, t->tm_min, t->tm_sec);
        }
        else
        {
            printf("DHCP Enabled    : No\n");
        }
    
        if (pAdapterInfo->HaveWins) 
        {
            printf("Have WINS       : Yes\n");
            printf("Pri. WINS Server: %s\n", 
                pAdapterInfo->PrimaryWinsServer.IpAddress.String);
            printf("Sec. WINS Server: %s\n", 
                pAdapterInfo->SecondaryWinsServer.IpAddress.String);
        }
        else
        {
            printf("Have WINS       : No\n");
        }

if (pAdapterInfo->Next != NULL)
            printf("\n");

pAdapterInfo = pAdapterInfo->Next;
    }

free(pAdapterInfo);

return 0;
}

The following image shows the output of the application running on our HP iPAQ hx2490b:

posted @ Friday, November 24, 2006 5:02 PM | Feedback (0)

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