Пример программы получения мас-адреса компьютера
(предварительно необходимо прилинковать библиотеку Netapi32.lib)
#include <windows.h>
#include <wincon.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
typedef struct _ASTAT_
{
ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff [30];
}ASTAT, *PASTAT;
ASTAT Adapter;
// Функция получения MAC адреса.
// На вход получает указатель на буфер, куда записывается строковое
// представление полученного MAC адреса.
BOOL GetMacAddress(char *buffer)
{
NCB ncb;
UCHAR uRetCode;
char NetName[50];
memset( &ncb, 0, sizeof(ncb) );
ncb.ncb_command = NCBRESET;
ncb.ncb_lana_num = 0;
uRetCode = Netbios( &ncb );
memset( &ncb, 0, sizeof(ncb) );
ncb.ncb_command = NCBASTAT;
ncb.ncb_lana_num = 0;
strcpy( (char *) ncb.ncb_callname, "* " );
ncb.ncb_buffer = (unsigned char *) &Adapter;
ncb.ncb_length = sizeof(Adapter);
uRetCode = Netbios( &ncb );
if(uRetCode==0)
{
sprintf(buffer, "%02X-%02X-%02X-%02X-%02X-%02X\n",
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapter.adapt.adapter_address[4],
Adapter.adapt.adapter_address[5]);
return TRUE;
}
return FALSE;
}
Пример программы перечисления компьютеров в локальной сети
#include <windows.h>
#include <wincon.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <Winnetwk.h>
BOOL WINAPI EnumerateFunc(HWND hwnd,
HDC hdc,
LPNETRESOURCE lpnr)
{
DWORD dwResult, dwResultEnum;
HANDLE hEnum;
DWORD cbBuffer = 16384; // 16K is a good size
DWORD cEntries = -1; // enumerate all possible entries
LPNETRESOURCE lpnrLocal; // pointer to enumerated structures
DWORD i;
//
// Call the WNetOpenEnum function to begin the enumeration.
//
dwResult = WNetOpenEnum(RESOURCE_GLOBALNET, // all network resources
RESOURCETYPE_ANY, // all resources
0, // enumerate all resources
lpnr, // NULL first time the function is called
&hEnum); // handle to the resource
if (dwResult != NO_ERROR)
{
//
// Process errors with an application-defined error handler.
//
NetErrorHandler(hwnd, dwResult, (LPSTR)"WNetOpenEnum");
return FALSE;
}
//
// Call the GlobalAlloc function to allocate resources.
//
lpnrLocal = (LPNETRESOURCE) GlobalAlloc(GPTR, cbBuffer);
if (lpnrLocal == NULL)
return FALSE;
do
{
//
// Initialize the buffer.
//
ZeroMemory(lpnrLocal, cbBuffer);
//
// Call the WNetEnumResource function to continue
// the enumeration.
//
dwResultEnum = WNetEnumResource(hEnum, // resource handle
&cEntries, // defined locally as -1
lpnrLocal, // LPNETRESOURCE
&cbBuffer); // buffer size
//
// If the call succeeds, loop through the structures.
//
if (dwResultEnum == NO_ERROR)
{
for(i = 0; i < cEntries; i++)
{
// Call an application-defined function to
// display the contents of the NETRESOURCE structures.
//
DisplayStruct(hdc, &lpnrLocal[i]);
// If the NETRESOURCE structure represents a container resource,
// call the EnumerateFunc function recursively.
if(RESOURCEUSAGE_CONTAINER == (lpnrLocal[i].dwUsage
& RESOURCEUSAGE_CONTAINER))
if(!EnumerateFunc(hwnd, hdc, &lpnrLocal[i]))
TextOut(hdc, 10, 10, _T("EnumerateFunc returned FALSE."), 29);
}
}
// Process errors.
//
else if (dwResultEnum != ERROR_NO_MORE_ITEMS)
{
NetErrorHandler(hwnd, dwResultEnum, (LPSTR)"WNetEnumResource");
break;
}
}
//
// End do.
//
while(dwResultEnum != ERROR_NO_MORE_ITEMS);
//
// Call the GlobalFree function to free the memory.
//
GlobalFree((HGLOBAL)lpnrLocal);
//
// Call WNetCloseEnum to end the enumeration.
//
dwResult = WNetCloseEnum(hEnum);
if(dwResult != NO_ERROR)
{
//
// Process errors.
//
NetErrorHandler(hwnd, dwResult, (LPSTR)"WNetCloseEnum");
return FALSE;
}
return TRUE;
}