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[UMPNPMGR] Implement PNP_GetClassInstance().

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This commit is contained in:
Eric Kohl 2019-06-06 18:15:52 +02:00
parent 8bfab2d457
commit 5e3c8ce0c6
1 changed files with 101 additions and 2 deletions
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103
base/services/umpnpmgr/rpcserver.c
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@ -1743,8 +1743,107 @@ PNP_GetClassInstance(
LPWSTR pszClassInstance,
PNP_RPC_STRING_LEN ulLength)
{
UNIMPLEMENTED;
return CR_CALL_NOT_IMPLEMENTED;
WCHAR szClassGuid[40];
WCHAR szClassInstance[5];
HKEY hDeviceClassKey = NULL;
HKEY hClassInstanceKey;
ULONG ulTransferLength, ulDataLength;
DWORD dwDataType, dwDisposition, i;
DWORD dwError;
CONFIGRET ret = CR_SUCCESS;
DPRINT("PNP_GetClassInstance(%p %S %p %lu)\n",
hBinding, pDeviceId, pszClassInstance, ulLength);
ulTransferLength = ulLength;
ret = PNP_GetDeviceRegProp(hBinding,
pDeviceId,
CM_DRP_DRIVER,
&dwDataType,
(BYTE *)pszClassInstance,
&ulTransferLength,
&ulLength,
0);
if (ret == CR_SUCCESS)
return ret;
ulTransferLength = sizeof(szClassGuid);
ulDataLength = sizeof(szClassGuid);
ret = PNP_GetDeviceRegProp(hBinding,
pDeviceId,
CM_DRP_CLASSGUID,
&dwDataType,
(BYTE *)szClassGuid,
&ulTransferLength,
&ulDataLength,
0);
if (ret != CR_SUCCESS)
{
DPRINT1("PNP_GetDeviceRegProp() failed (Error %lu)\n", ret);
goto done;
}
dwError = RegOpenKeyExW(hClassKey,
szClassGuid,
0,
KEY_READ,
&hDeviceClassKey);
if (dwError != ERROR_SUCCESS)
{
DPRINT1("RegOpenKeyExW() failed (Error %lu)\n", dwError);
ret = CR_FAILURE;
goto done;
}
for (i = 0; i < 10000; i++)
{
wsprintf(szClassInstance, L"%04lu", i);
dwError = RegCreateKeyExW(hDeviceClassKey,
szClassInstance,
0,
NULL,
REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS,
NULL,
&hClassInstanceKey,
&dwDisposition);
if (dwError == ERROR_SUCCESS)
{
RegCloseKey(hClassInstanceKey);
if (dwDisposition == REG_CREATED_NEW_KEY)
{
wsprintf(pszClassInstance,
L"%s\\%s",
szClassGuid,
szClassInstance);
ulDataLength = (wcslen(pszClassInstance) + 1) * sizeof(WCHAR);
ret = PNP_SetDeviceRegProp(hBinding,
pDeviceId,
CM_DRP_DRIVER,
REG_SZ,
(BYTE *)pszClassInstance,
ulDataLength,
0);
if (ret != CR_SUCCESS)
{
DPRINT1("PNP_SetDeviceRegProp() failed (Error %lu)\n", ret);
RegDeleteKeyW(hDeviceClassKey,
szClassInstance);
}
break;
}
}
}
done:
if (hDeviceClassKey != NULL)
RegCloseKey(hDeviceClassKey);
return ret;
}