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869 lines
25 KiB
869 lines
25 KiB
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1997-1999.
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//
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// File: N C M I S C . C P P
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//
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// Contents: Miscellaneous common code.
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//
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// Notes: Pollute this under penalty of death.
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//
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// Author: shaunco 10 Oct 1997
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//
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//----------------------------------------------------------------------------
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#include <pch.h>
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#pragma hdrstop
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#include "ncdebug.h"
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#include "ncmisc.h"
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#include "ncreg.h"
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#include "ncsvc.h"
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#include "nceh.h"
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#include <eh.h>
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//+---------------------------------------------------------------------------
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//
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// Function: FInSystemSetup
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//
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// Purpose: Determines whether the machine is in GUI mode setup or not.
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//
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// Arguments:
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// (none)
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//
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// Returns: TRUE if in GUI mode (system) setup, FALSE if not.
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//
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// Author: danielwe 13 Jun 1997
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//
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// Notes: The state is cached (since it can't change without a reboot)
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// so call as often as you like. No need to keep you're own
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// cached copy.
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//
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BOOL
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FInSystemSetup ()
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{
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enum SETUP_STATE
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{
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SS_UNKNOWN = 0, // state unknown
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SS_NOTINSETUP, // not in setup mode
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SS_SYSTEMSETUP // in GUI mode setup
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};
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static SETUP_STATE s_CachedSetupState = SS_UNKNOWN;
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if (SS_UNKNOWN == s_CachedSetupState)
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{
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s_CachedSetupState = SS_NOTINSETUP;
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// Open the setup key
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//
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HRESULT hr;
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HKEY hkeySetup;
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hr = HrRegOpenKeyEx(HKEY_LOCAL_MACHINE, L"System\\Setup",
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KEY_READ, &hkeySetup);
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if (S_OK == hr)
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{
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// get the value of the setup in progress
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//
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DWORD dwSysSetup;
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hr = HrRegQueryDword(hkeySetup, L"SystemSetupInProgress",
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&dwSysSetup);
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if ((S_OK == hr) && dwSysSetup)
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{
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s_CachedSetupState = SS_SYSTEMSETUP;
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}
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RegCloseKey(hkeySetup);
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}
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}
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Assert (SS_UNKNOWN != s_CachedSetupState);
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return (SS_SYSTEMSETUP == s_CachedSetupState);
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}
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//+---------------------------------------------------------------------------
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//
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// Function: GetProductFlavor
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//
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// Purpose: Returns the flavor of NT currenty running on the machine.
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//
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// Arguments:
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// pvReserved [in] Reserved. Must be NULL.
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// ppf [out] Returned flavor.
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//
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// Returns: nothing
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//
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// Author: shaunco 24 Mar 1997
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//
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// Notes:
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//
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NOTHROW
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VOID
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GetProductFlavor (
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const void* pvReserved,
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PRODUCT_FLAVOR* ppf)
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{
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NT_PRODUCT_TYPE Type;
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Assert(!pvReserved);
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Assert(ppf);
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// Assume workstation product
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//
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*ppf = PF_WORKSTATION;
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// Even if RtlGetProductType fails, its documented to return
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// NtProductWinNt.
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//
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RtlGetNtProductType (&Type);
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if (NtProductWinNt != Type)
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{
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*ppf = PF_SERVER;
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}
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}
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//+---------------------------------------------------------------------------
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//
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// Function: HrIsNetworkingInstalled
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//
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// Purpose: Returns whether networking is installed.
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//
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// Arguments:
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// (none)
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//
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// Returns: S_OK if networking is installed, S_FALSE if not, Win32 error
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// otherwise.
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//
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// Author: danielwe 25 Jun 1997
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//
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// Notes: To determine if networking is installed, the ProviderOrder
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// value of System\CurrentControlSet\Control\NetworkProvider\Order
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// registry key is queried. If any data is present, networking
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// is installed.
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//
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HRESULT
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HrIsNetworkingInstalled ()
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{
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HRESULT hr = S_OK;
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HKEY hkeyProvider;
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DWORD cbSize = 0;
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DWORD dwType;
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extern const WCHAR c_szRegKeyCtlNPOrder[];
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extern const WCHAR c_szProviderOrder[];
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// open the provider key
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hr = HrRegOpenKeyEx(HKEY_LOCAL_MACHINE, c_szRegKeyCtlNPOrder,
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KEY_READ, &hkeyProvider);
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if (S_OK == hr)
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{
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// get the count in bytes of the provider order value
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hr = HrRegQueryValueEx(hkeyProvider, c_szProviderOrder,
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&dwType, (LPBYTE)NULL, &cbSize);
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if (S_OK == hr)
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{
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if (cbSize > 2)
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{
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// if the value was present and it contained information
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// then we have networking of some sorts
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//
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hr = S_OK;
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}
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else
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{
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hr = S_FALSE;
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}
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}
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else if (hr == HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND))
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{
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hr = S_FALSE;
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}
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RegCloseKey(hkeyProvider);
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}
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TraceError("HrIsNetworkingInstalled", (hr == S_FALSE) ? S_OK : hr);
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return hr;
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}
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#ifdef REMOTEBOOT
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//+---------------------------------------------------------------------------
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//
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// Function: HrIsRemoteBootMachine
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//
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// Purpose: Returns whether this is a remote boot client.
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//
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// Arguments:
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// (none)
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//
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// Returns: S_OK if it is remote boot, S_FALSE if not.
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//
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// Author: adamba 27 Mar 1998
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//
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// Notes: Calls GetSystemInfoEx to determine whether this is a
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// remote boot client.
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//
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HRESULT HrIsRemoteBootMachine()
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{
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BOOL fIsRemoteBoot;
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BOOL ok;
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DWORD size = sizeof(fIsRemoteBoot);
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ok = GetSystemInfoEx(SystemInfoRemoteBoot, &fIsRemoteBoot, &size);
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Assert(ok);
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if (fIsRemoteBoot) {
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return S_OK;
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} else {
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return S_FALSE;
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}
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}
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#endif // defined(REMOTEBOOT)
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//+---------------------------------------------------------------------------
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//
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// Function: HrRegisterOrUnregisterComObject
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//
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// Purpose: Handles registration or unregistration of one or more COM
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// objects contained in a DLL that supports the
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// DllRegisterServer or DllUnregisterServer entry points.
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//
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// Arguments:
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// pszDllPath [in] Path to DLL that contains COM object(s) to (un)register.
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// rf [in] Function to perform
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//
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// Returns: S_OK if successful, Win32 or OLE HRESULT if failure.
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//
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// Author: danielwe 6 May 1997
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//
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// Notes:
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//
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HRESULT
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HrRegisterOrUnregisterComObject (
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PCWSTR pszDllPath,
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REGISTER_FUNCTION rf)
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{
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BOOL fCoUninitialize = TRUE;
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HRESULT hr = CoInitializeEx( NULL,
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COINIT_DISABLE_OLE1DDE | COINIT_MULTITHREADED );
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if (RPC_E_CHANGED_MODE == hr)
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{
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hr = S_OK;
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fCoUninitialize = FALSE;
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}
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if (SUCCEEDED(hr))
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{
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// ANSI only
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const CHAR c_szaRegisterFunction[] = "DllRegisterServer";
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const CHAR c_szaUnregisterFunction[] = "DllUnregisterServer";
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typedef HRESULT (CALLBACK *HCRET)(void);
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HCRET pfnRegister;
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HMODULE hModule;
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// Get a pointer the the registration function in the Dll
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hr = HrLoadLibAndGetProc (pszDllPath,
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((RF_REGISTER == rf) ?
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c_szaRegisterFunction : c_szaUnregisterFunction),
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&hModule,
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reinterpret_cast<FARPROC*>(&pfnRegister));
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if (S_OK == hr)
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{
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// Call the registration function
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hr = (*pfnRegister)();
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// RAID #160109 (danielwe) 21 Apr 1998: Handle this error and
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// ignore it.
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if (RPC_E_CHANGED_MODE == hr)
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{
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hr = S_OK;
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}
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TraceError ("HrRegisterOrUnregisterComObject - "
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"Dll(Un)RegisterServer failed!", hr);
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FreeLibrary (hModule);
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}
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// Balances call to CoInitialize() above. Not harmful if CoInitialize()
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// was called more than once before this.
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if (fCoUninitialize)
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{
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CoUninitialize();
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}
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}
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TraceError ("HrRegisterOrUnregisterComObject", hr);
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return hr;
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}
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//
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// Special case handling for Netbios stopping
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//
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#include <nb30p.h> // Netbios IOCTLs and netbios name #define
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//+---------------------------------------------------------------------------
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//
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// Func: ScStopNetbios
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//
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// Desc: This function checks if the driver being unloaded is NETBIOS.SYS.
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// If so it performs some special case processing for Netbios.
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//
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// Args: none
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//
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// Return: STATUS_SUCCESS if successful, or an error status
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//
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// History: 28-Apr-98 SumitC got from VRaman
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//
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//----------------------------------------------------------------------------
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DWORD
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ScStopNetbios()
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{
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OBJECT_ATTRIBUTES ObjAttr;
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UNICODE_STRING NbDeviceName;
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IO_STATUS_BLOCK IoStatus, StopStatus;
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NTSTATUS ntStatus = STATUS_SUCCESS;
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HANDLE NbHandle = NULL;
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do
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{
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//
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// Driver being stopped is netbios
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//
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//
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// 1. Open a handle to the \\Device\Netbios
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//
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RtlInitUnicodeString(&NbDeviceName, NB_DEVICE_NAME);
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InitializeObjectAttributes(
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&ObjAttr, // obj attr to initialize
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&NbDeviceName, // string to use
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OBJ_CASE_INSENSITIVE, // Attributes
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NULL, // Root directory
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NULL); // Security Descriptor
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ntStatus = NtCreateFile(
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&NbHandle, // ptr to handle
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GENERIC_READ|GENERIC_WRITE, // desired access
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&ObjAttr, // name & attributes
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&IoStatus, // I/O status block.
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NULL, // alloc size.
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FILE_ATTRIBUTE_NORMAL,
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FILE_SHARE_DELETE // share...
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| FILE_SHARE_READ
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| FILE_SHARE_WRITE, // ...access
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FILE_OPEN_IF, // create disposition
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0, // ...options
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NULL, // EA buffer
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0L // Ea buffer len
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);
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if (!NT_SUCCESS(ntStatus))
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{
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TraceTag(ttidError, "Failed to open file handle to Netbios device (%08lx)",
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ntStatus);
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break;
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}
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//
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// 2. Send a stop IOCTL to it.
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//
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ntStatus = NtDeviceIoControlFile(
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NbHandle, // Handle to device
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NULL, // Event to be signalled
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NULL, // No post routine
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NULL, // no context for post
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&StopStatus, // return status block
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IOCTL_NB_STOP, // IOCTL
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NULL, // No input parameters
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0,
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NULL, // No output paramters
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0
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);
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if (!NT_SUCCESS(ntStatus))
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{
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TraceTag(ttidSvcCtl, "Failed to send STOP IOCTL to netbios (%08lx).",
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"probably means Netbios isn't running... anyway, we can't stop it",
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ntStatus);
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break;
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}
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} while (FALSE);
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|
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//
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// 4. Close the handle just opened to the driver
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//
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if (NULL != NbHandle)
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{
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NtClose( NbHandle );
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}
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TraceError("ScStopNetbios", HRESULT_FROM_WIN32(ntStatus));
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return ntStatus;
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}
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|
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// ----------------------------------------------------------------------
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//
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// Function: HrEnableAndStartSpooler
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//
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// Purpose: Start spooler, enable if necessary
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//
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// Arguments: None
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//
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// Returns: S_OK on success, otherwise an error code
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//
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// Author: kumarp 19-May-98
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//
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// Notes:
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//
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HRESULT HrEnableAndStartSpooler ()
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{
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static const WCHAR c_szSpooler[] = L"Spooler";
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TraceTag(ttidNetcfgBase, "entering ---> HrEnableAndStartSpooler" );
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// Try to start the spooler. Need to explicitly open the service
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// control manager with all access first, so that in case we need to
|
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// change the start type, we have the proper permission.
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//
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CServiceManager scm;
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HRESULT hr = scm.HrOpen (NO_LOCK, SC_MANAGER_ALL_ACCESS);
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if (S_OK == hr)
|
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{
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hr = scm.HrStartServiceAndWait (c_szSpooler);
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if (HRESULT_FROM_WIN32(ERROR_SERVICE_DISABLED) == hr)
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{
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TraceTag(ttidNetcfgBase, "HrEnableAndStartSpooler: spooler is "
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"disabled trying to enable it..." );
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|
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// Have to lock the service controller before changing the
|
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// configuration of a service. Do so and unlock before trying to
|
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// start the service.
|
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//
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hr = scm.HrLock ();
|
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if (S_OK == hr)
|
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{
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CService svc;
|
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|
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hr = scm.HrOpenService (&svc, c_szSpooler,
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NO_LOCK,
|
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SC_MANAGER_ALL_ACCESS,
|
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STANDARD_RIGHTS_REQUIRED
|
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| SERVICE_CHANGE_CONFIG);
|
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if (S_OK == hr)
|
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{
|
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hr = svc.HrSetStartType (SERVICE_DEMAND_START);
|
|
}
|
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|
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scm.Unlock ();
|
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}
|
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|
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if (S_OK == hr)
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{
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TraceTag(ttidNetcfgBase, "HrEnableAndStartSpooler: succeeded "
|
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"in enabling spooer. Now starting..." );
|
|
|
|
hr = scm.HrStartServiceAndWait(c_szSpooler);
|
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}
|
|
}
|
|
}
|
|
|
|
TraceError("HrEnableAndStartSpooler", hr);
|
|
return hr;
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: HrCreateDirectoryTree
|
|
//
|
|
// Purpose: Creates (or ensures existence of) all directories on the path
|
|
// specified in szPath.
|
|
//
|
|
// Arguments:
|
|
// pszPath [in] Full path of one or more directories to create
|
|
// (i.e. c:\this\is\a\directory\path)
|
|
// psa [in] Security attributes
|
|
//
|
|
// Returns: S_OK if success, Win32 error code otherwise
|
|
//
|
|
// Author: shaunco (copied from RASUI by danielwe) 26 Jun 1998
|
|
//
|
|
// Notes:
|
|
//
|
|
HRESULT HrCreateDirectoryTree(PWSTR pszPath, LPSECURITY_ATTRIBUTES psa)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
if (pszPath)
|
|
{
|
|
DWORD dwErr = ERROR_SUCCESS;
|
|
|
|
// Loop through the path.
|
|
//
|
|
PWSTR pch;
|
|
for (pch = pszPath; *pch; pch++)
|
|
{
|
|
// Stop at each backslash and make sure the path
|
|
// is created to that point. Do this by changing the
|
|
// backslash to a null-terminator, calling CreateDirecotry,
|
|
// and changing it back.
|
|
//
|
|
if (L'\\' == *pch)
|
|
{
|
|
BOOL fOk;
|
|
|
|
*pch = 0;
|
|
fOk = CreateDirectory(pszPath, psa);
|
|
*pch = L'\\';
|
|
|
|
// Any errors other than path alredy exists and we should
|
|
// bail out. We also get access denied when trying to
|
|
// create a root drive (i.e. c:) so check for this too.
|
|
//
|
|
if (!fOk)
|
|
{
|
|
dwErr = GetLastError();
|
|
if (ERROR_ALREADY_EXISTS == dwErr)
|
|
{
|
|
dwErr = ERROR_SUCCESS;
|
|
}
|
|
else if ((ERROR_ACCESS_DENIED == dwErr) &&
|
|
(pch - 1 > pszPath) && (L':' == *(pch - 1)))
|
|
{
|
|
dwErr = ERROR_SUCCESS;
|
|
}
|
|
else
|
|
{
|
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break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ERROR_ALREADY_EXISTS == dwErr)
|
|
{
|
|
dwErr = ERROR_SUCCESS;
|
|
}
|
|
|
|
if (dwErr != ERROR_SUCCESS)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(dwErr);
|
|
}
|
|
}
|
|
|
|
TraceError("HrCreateDirectoryTree", hr);
|
|
return hr;
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: HrDeleteFileSpecification
|
|
//
|
|
// Purpose: Delete the files specified with pszFileSpec from the
|
|
// directory given by pszDirectoryPath.
|
|
//
|
|
// Arguments:
|
|
// pszFileSpec [in] File specificaion to delete. e.g. *.mdb
|
|
// pszDirectoryPath [in] Directory path to delete from
|
|
//
|
|
// Returns: S_OK or an error code.
|
|
//
|
|
// Author: shaunco 4 Jun 1998
|
|
//
|
|
// Notes:
|
|
//
|
|
HRESULT
|
|
HrDeleteFileSpecification (
|
|
PCWSTR pszFileSpec,
|
|
PCWSTR pszDirectoryPath)
|
|
{
|
|
Assert (pszFileSpec && *pszFileSpec);
|
|
Assert (pszDirectoryPath && *pszDirectoryPath);
|
|
|
|
HRESULT hr = S_OK;
|
|
|
|
INT cchSpec = lstrlenW (pszFileSpec);
|
|
INT cchDir = lstrlenW (pszDirectoryPath);
|
|
|
|
// Make sure the length of the directory and filespec combined is less
|
|
// than MAX_PATH before continuing. The '+1' is for the backslash
|
|
// that we may add.
|
|
//
|
|
if (cchDir + 1 + cchSpec > MAX_PATH)
|
|
{
|
|
hr = HRESULT_FROM_WIN32 (ERROR_BAD_PATHNAME);
|
|
}
|
|
else
|
|
{
|
|
WCHAR szPath[MAX_PATH];
|
|
|
|
// Form the path by copying the directory and making sure it
|
|
// is terminated with a backslash if needed.
|
|
//
|
|
lstrcpyW (szPath, pszDirectoryPath);
|
|
if (cchDir &&
|
|
(L':' != pszDirectoryPath[cchDir - 1]) &&
|
|
(L'\\' != pszDirectoryPath[cchDir - 1]))
|
|
{
|
|
lstrcatW (szPath, L"\\");
|
|
cchDir++;
|
|
}
|
|
|
|
// Append the filespec to the directory and look for the first
|
|
// file.
|
|
lstrcatW (szPath, pszFileSpec);
|
|
|
|
TraceTag (ttidNetcfgBase, "Looking to delete %S (cchDir=%u)",
|
|
szPath, cchDir);
|
|
|
|
WIN32_FIND_DATA FindData;
|
|
HANDLE hFind = FindFirstFile (szPath, &FindData);
|
|
if (INVALID_HANDLE_VALUE != hFind)
|
|
{
|
|
PCWSTR pszFileName;
|
|
INT cchFileName;
|
|
|
|
do
|
|
{
|
|
// Skip files with these attributes.
|
|
//
|
|
if (FindData.dwFileAttributes & (FILE_ATTRIBUTE_DIRECTORY |
|
|
FILE_ATTRIBUTE_HIDDEN |
|
|
FILE_ATTRIBUTE_READONLY |
|
|
FILE_ATTRIBUTE_SYSTEM))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
// Use the shortname where possible to give us a chance
|
|
// of using a path within MAX_PATH first.
|
|
//
|
|
pszFileName = FindData.cAlternateFileName;
|
|
cchFileName = lstrlenW (pszFileName);
|
|
if (!cchFileName)
|
|
{
|
|
pszFileName = FindData.cFileName;
|
|
cchFileName = lstrlenW (pszFileName);
|
|
}
|
|
|
|
// If the length of the directory and filename don't exceed
|
|
// MAX_PATH, form the full pathname and delete it.
|
|
//
|
|
if (cchDir + cchFileName < MAX_PATH)
|
|
{
|
|
lstrcpyW (&szPath[cchDir], pszFileName);
|
|
|
|
TraceTag (ttidNetcfgBase, "Deleting %S", szPath);
|
|
|
|
if (!DeleteFile (szPath))
|
|
{
|
|
hr = HrFromLastWin32Error ();
|
|
TraceError ("DeleteFile failed. Ignoring.", hr);
|
|
}
|
|
}
|
|
}
|
|
while (FindNextFile (hFind, &FindData));
|
|
|
|
// FindNextFile should set last error to ERROR_NO_MORE_FILES
|
|
// on a succesful termination.
|
|
//
|
|
hr = HrFromLastWin32Error ();
|
|
if (HRESULT_FROM_WIN32(ERROR_NO_MORE_FILES) == hr)
|
|
{
|
|
hr = S_OK;
|
|
}
|
|
|
|
|
|
FindClose (hFind);
|
|
}
|
|
else
|
|
{
|
|
// If FindFirstFile didn't find anything, that's okay.
|
|
//
|
|
hr = HrFromLastWin32Error ();
|
|
if (HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND) == hr)
|
|
{
|
|
hr = S_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
TraceError ("HrDeleteFileSpecification", hr);
|
|
return hr;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------
|
|
//
|
|
// Function: HrDeleteDirectory
|
|
//
|
|
// Purpose: Recursively delete a directory and its all sub-dirs.
|
|
//
|
|
// Arguments:
|
|
// pszDir [in] full path to a dir
|
|
// fContinueOnError [in] whether to continue deleting others when we
|
|
// error when deleting one
|
|
//
|
|
// Returns: S_OK on success, otherwise an error code
|
|
//
|
|
// Author: kumarp 19-December-97
|
|
// danielwe 15-December-98 (moved to common and revised)
|
|
//
|
|
// Notes:
|
|
//
|
|
HRESULT HrDeleteDirectory(IN PCWSTR pszDir,
|
|
IN BOOL fContinueOnError)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
WCHAR szPrefix[MAX_PATH];
|
|
WCHAR szFileSpec[MAX_PATH];
|
|
WCHAR szAllFiles[MAX_PATH];
|
|
HANDLE hFileContext;
|
|
WIN32_FIND_DATA fd;
|
|
|
|
TraceTag(ttidNetcfgBase, "Deleting directory %S", pszDir);
|
|
lstrcpyW(szPrefix, pszDir);
|
|
lstrcatW(szPrefix, L"\\");
|
|
|
|
lstrcpyW(szAllFiles, pszDir);
|
|
lstrcatW(szAllFiles, L"\\");
|
|
lstrcatW(szAllFiles, L"*");
|
|
|
|
hFileContext = FindFirstFile(szAllFiles, &fd);
|
|
|
|
if (hFileContext != INVALID_HANDLE_VALUE)
|
|
{
|
|
do
|
|
{
|
|
lstrcpyW(szFileSpec, szPrefix);
|
|
lstrcatW(szFileSpec, fd.cFileName);
|
|
|
|
if (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
|
|
{
|
|
if (!(!lstrcmpiW(fd.cFileName, L".") ||
|
|
!lstrcmpiW(fd.cFileName, L"..")))
|
|
{
|
|
hr = HrDeleteDirectory(szFileSpec, fContinueOnError);
|
|
if (FAILED(hr) && fContinueOnError)
|
|
{
|
|
hr = S_OK;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
TraceTag(ttidNetcfgBase, "Deleting file %S", szFileSpec);
|
|
|
|
if (DeleteFile(szFileSpec))
|
|
{
|
|
hr = S_OK;
|
|
}
|
|
else
|
|
{
|
|
TraceTag(ttidNetcfgBase, "Error deleting file %S",
|
|
szFileSpec);
|
|
TraceError("HrDeleteDirectory", hr);
|
|
hr = fContinueOnError ? S_OK : HrFromLastWin32Error();
|
|
}
|
|
}
|
|
|
|
if ((S_OK == hr) && FindNextFile(hFileContext, &fd))
|
|
{
|
|
hr = S_OK;
|
|
}
|
|
else
|
|
{
|
|
hr = HrFromLastWin32Error();
|
|
}
|
|
}
|
|
while (S_OK == hr);
|
|
|
|
if (hr == HRESULT_FROM_WIN32(ERROR_NO_MORE_FILES))
|
|
{
|
|
hr = S_OK;
|
|
}
|
|
|
|
FindClose(hFileContext);
|
|
|
|
if (S_OK == hr)
|
|
{
|
|
if (RemoveDirectory(pszDir))
|
|
{
|
|
hr = S_OK;
|
|
}
|
|
else
|
|
{
|
|
TraceTag(ttidNetcfgBase, "Error deleting directory %S", pszDir);
|
|
TraceLastWin32Error("HrDeleteDirectory");
|
|
hr = fContinueOnError ? S_OK : HrFromLastWin32Error();
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
hr = HrFromLastWin32Error();
|
|
}
|
|
|
|
TraceError("HrDeleteDirectory", hr);
|
|
return hr;
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: LowerCaseComputerName
|
|
//
|
|
// Purpose: Utility function to lowercase a name obtained either from
|
|
// the user via an UPPERCASE edit control, or via GetComputerName.
|
|
//
|
|
// Arguments:
|
|
// szName [in,out] Computername, which is modified in-place
|
|
//
|
|
// Returns: VOID
|
|
//
|
|
// Author: SumitC 29 Sep 1999
|
|
//
|
|
// Notes: The conversion only fails if CharLowerBuffW fails. Per the user
|
|
// guys, CharLowerBuff never actually returns any indication of
|
|
// failure, so we can't tell anyway. I've been assured that the
|
|
// conversion is VERY unlikely to fail.
|
|
//
|
|
VOID
|
|
LowerCaseComputerName(
|
|
IN OUT PWSTR szName)
|
|
{
|
|
// try the conversion
|
|
Assert(szName);
|
|
DWORD dwLen = wcslen(szName);
|
|
DWORD dwConverted = CharLowerBuff(szName, dwLen);
|
|
Assert(dwConverted == dwLen);
|
|
}
|
|
|
|
void __cdecl nc_trans_func( unsigned int uSECode, EXCEPTION_POINTERS* pExp )
|
|
{
|
|
throw SE_Exception( uSECode );
|
|
}
|
|
|
|
void EnableCPPExceptionHandling()
|
|
{
|
|
_set_se_translator(nc_trans_func);
|
|
}
|
|
|
|
void DisableCPPExceptionHandling()
|
|
{
|
|
_set_se_translator(NULL);
|
|
}
|