144 lines
3.6 KiB
C
144 lines
3.6 KiB
C
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// Private nt headers.
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//
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <objbase.h> // CLSIDFromString
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#include <setupapi.h>
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#include <conio.h> // _kbhit
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#include <stdio.h> // printf
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BOOL
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FGetClassGuidFromCmdLineParam (
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PCWSTR pszParam,
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GUID* pguidClass)
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{
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static const struct
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{
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GUID guidClass;
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PCWSTR pszName;
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} MapClassGuidToName [] =
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{
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{ {0xad498944, 0x762f, 0x11d0, 0x8d, 0xcb, 0x00, 0xc0, 0x4f, 0xc3, 0x35, 0x8c},
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L"ndislan" },
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};
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if (TEXT('{' == *pszParam))
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{
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return SUCCEEDED(CLSIDFromString ((LPOLESTR)pszParam, pguidClass));
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}
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else
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{
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INT i;
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for (i = 0;
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i < sizeof(MapClassGuidToName) / sizeof(MapClassGuidToName[0]);
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i++)
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{
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if (0 == lstrcmpiW (pszParam, MapClassGuidToName[i].pszName))
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{
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*pguidClass = MapClassGuidToName[i].guidClass;
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return TRUE;
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}
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}
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}
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return FALSE;
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}
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void
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__cdecl
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wmain (
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int argc,
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PCWSTR argv[])
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{
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GUID guidClass;
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HDEVINFO hdi;
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// Argument check
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//
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if (2 != argc)
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{
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printf ("%S {class guid}\n", argv[0]);
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return;
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}
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// Conver the string argument for the guid into a GUID.
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//
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if (!FGetClassGuidFromCmdLineParam (argv[1], &guidClass))
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{
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printf ("error: invalid class guid.\n");
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}
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// Get the devices in this class.
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//
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hdi = SetupDiGetClassDevs (&guidClass, NULL, NULL,
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DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
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if (hdi)
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{
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BYTE abBuffer [ sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA) +
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(MAX_PATH * sizeof(WCHAR)) ];
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SP_DEVICE_INTERFACE_DATA did;
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PSP_DEVICE_INTERFACE_DETAIL_DATA pDetail;
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DWORD i;
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ZeroMemory (&did, sizeof(did));
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did.cbSize = sizeof(did);
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pDetail = (PSP_DEVICE_INTERFACE_DETAIL_DATA)abBuffer;
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// Enumerate the device interfaces of the class.
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//
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for (i = 0;
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SetupDiEnumDeviceInterfaces (hdi, NULL, &guidClass, i, &did);
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i++)
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{
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pDetail->cbSize = sizeof(*pDetail);
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if (SetupDiGetDeviceInterfaceDetail (hdi, &did,
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pDetail, sizeof(abBuffer), NULL, NULL))
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{
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HANDLE hFile;
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printf ("opening %S\n", pDetail->DevicePath);
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hFile = CreateFile (pDetail->DevicePath,
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GENERIC_READ | GENERIC_WRITE,
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0, NULL, OPEN_EXISTING,
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FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED,
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NULL);
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if (hFile && (INVALID_HANDLE_VALUE != hFile))
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{
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printf ("press any key to close device...");
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while (!_kbhit())
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{
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Sleep (20);
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}
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_getch ();
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printf ("\n\n");
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CloseHandle (hFile);
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}
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else
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{
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printf ("error: CreateFile failed. (%d)\n\n",
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GetLastError ());
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}
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}
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else
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{
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printf ("error: SetupDiGetDeviceInterfaceDetail failed "
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"for item %d. (%d)\n", i, GetLastError ());
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}
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}
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SetupDiDestroyDeviceInfoList (hdi);
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}
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else
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{
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printf ("error: SetupDiGetClassDevs returned %d", GetLastError ());
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}
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}
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