reactos/dll/win32/shell32/utils.cpp
Katayama Hirofumi MZ 2aeda3dc15
[SHELL32][SHELL32_APITEST][SDK] Implement PathIsEqualOrSubFolder (#5714)
Implement PathIsEqualOrSubFolder function.
- Add it to <undocshell.h>.
- Add PathIsEqualOrSubFolder testcase.
- Add SHGetPathCchFromIDListW as an
  extension of SHGetPathFromIDListW.
CORE-19278
2023-11-29 22:50:01 +09:00

865 lines
22 KiB
C++

/*
* PROJECT: shell32
* LICENSE: LGPL-2.1+ (https://spdx.org/licenses/LGPL-2.1+)
* PURPOSE: Utility functions
* COPYRIGHT: Copyright 2023 Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
*/
#include "precomp.h"
WINE_DEFAULT_DEBUG_CHANNEL(shell);
static BOOL
OpenEffectiveToken(
_In_ DWORD DesiredAccess,
_Out_ HANDLE *phToken)
{
BOOL ret;
if (phToken == NULL)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
*phToken = NULL;
ret = OpenThreadToken(GetCurrentThread(), DesiredAccess, FALSE, phToken);
if (!ret && GetLastError() == ERROR_NO_TOKEN)
ret = OpenProcessToken(GetCurrentProcess(), DesiredAccess, phToken);
return ret;
}
/*************************************************************************
* SHSetFolderPathA (SHELL32.231)
*
* @see https://learn.microsoft.com/en-us/windows/win32/api/shlobj_core/nf-shlobj_core-shsetfolderpatha
*/
EXTERN_C
HRESULT WINAPI
SHSetFolderPathA(
_In_ INT csidl,
_In_ HANDLE hToken,
_In_ DWORD dwFlags,
_In_ LPCSTR pszPath)
{
TRACE("(%d, %p, 0x%X, %s)\n", csidl, hToken, dwFlags, debugstr_a(pszPath));
CStringW strPathW(pszPath);
return SHSetFolderPathW(csidl, hToken, dwFlags, strPathW);
}
/*************************************************************************
* PathIsSlowA (SHELL32.240)
*
* @see https://learn.microsoft.com/en-us/windows/win32/api/shlobj/nf-shlobj-pathisslowa
*/
EXTERN_C
BOOL WINAPI
PathIsSlowA(
_In_ LPCSTR pszFile,
_In_ DWORD dwAttr)
{
TRACE("(%s, 0x%X)\n", debugstr_a(pszFile), dwAttr);
CStringW strFileW(pszFile);
return PathIsSlowW(strFileW, dwAttr);
}
/*************************************************************************
* ExtractIconResInfoA (SHELL32.221)
*/
EXTERN_C
WORD WINAPI
ExtractIconResInfoA(
_In_ HANDLE hHandle,
_In_ LPCSTR lpFileName,
_In_ WORD wIndex,
_Out_ LPWORD lpSize,
_Out_ LPHANDLE lpIcon)
{
TRACE("(%p, %s, %u, %p, %p)\n", hHandle, debugstr_a(lpFileName), wIndex, lpSize, lpIcon);
if (!lpFileName)
return 0;
CStringW strFileNameW(lpFileName);
return ExtractIconResInfoW(hHandle, strFileNameW, wIndex, lpSize, lpIcon);
}
/*************************************************************************
* ShortSizeFormatW (SHELL32.204)
*/
EXTERN_C
LPWSTR WINAPI
ShortSizeFormatW(
_In_ DWORD dwNumber,
_Out_writes_(0x8FFF) LPWSTR pszBuffer)
{
TRACE("(%lu, %p)\n", dwNumber, pszBuffer);
return StrFormatByteSizeW(dwNumber, pszBuffer, 0x8FFF);
}
/*************************************************************************
* SHOpenEffectiveToken (SHELL32.235)
*/
EXTERN_C BOOL WINAPI SHOpenEffectiveToken(_Out_ LPHANDLE phToken)
{
TRACE("%p\n", phToken);
return OpenEffectiveToken(TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, phToken);
}
/*************************************************************************
* SHGetUserSessionId (SHELL32.248)
*/
EXTERN_C DWORD WINAPI SHGetUserSessionId(_In_opt_ HANDLE hToken)
{
DWORD dwSessionId, dwLength;
BOOL bOpenToken = FALSE;
TRACE("%p\n", hToken);
if (!hToken)
bOpenToken = SHOpenEffectiveToken(&hToken);
if (!hToken ||
!GetTokenInformation(hToken, TokenSessionId, &dwSessionId, sizeof(dwSessionId), &dwLength))
{
dwSessionId = 0;
}
if (bOpenToken)
CloseHandle(hToken);
return dwSessionId;
}
/*************************************************************************
* SHInvokePrivilegedFunctionW (SHELL32.246)
*/
EXTERN_C
HRESULT WINAPI
SHInvokePrivilegedFunctionW(
_In_ LPCWSTR pszName,
_In_ PRIVILEGED_FUNCTION fn,
_In_opt_ LPARAM lParam)
{
TRACE("(%s %p %p)\n", debugstr_w(pszName), fn, lParam);
if (!pszName || !fn)
return E_INVALIDARG;
HANDLE hToken = NULL;
TOKEN_PRIVILEGES NewPriv, PrevPriv;
BOOL bAdjusted = FALSE;
if (SHOpenEffectiveToken(&hToken) &&
::LookupPrivilegeValueW(NULL, pszName, &NewPriv.Privileges[0].Luid))
{
NewPriv.PrivilegeCount = 1;
NewPriv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
DWORD dwReturnSize;
bAdjusted = ::AdjustTokenPrivileges(hToken, FALSE, &NewPriv,
sizeof(PrevPriv), &PrevPriv, &dwReturnSize);
}
HRESULT hr = fn(lParam);
if (bAdjusted)
::AdjustTokenPrivileges(hToken, FALSE, &PrevPriv, 0, NULL, NULL);
if (hToken)
::CloseHandle(hToken);
return hr;
}
/*************************************************************************
* SHTestTokenPrivilegeW (SHELL32.236)
*
* @see http://undoc.airesoft.co.uk/shell32.dll/SHTestTokenPrivilegeW.php
*/
EXTERN_C
BOOL WINAPI
SHTestTokenPrivilegeW(
_In_opt_ HANDLE hToken,
_In_ LPCWSTR lpName)
{
LUID Luid;
DWORD dwLength;
PTOKEN_PRIVILEGES pTokenPriv;
HANDLE hNewToken = NULL;
BOOL ret = FALSE;
TRACE("(%p, %s)\n", hToken, debugstr_w(lpName));
if (!lpName)
return FALSE;
if (!hToken)
{
if (!SHOpenEffectiveToken(&hNewToken))
goto Quit;
if (!hNewToken)
return FALSE;
hToken = hNewToken;
}
if (!LookupPrivilegeValueW(NULL, lpName, &Luid))
return FALSE;
dwLength = 0;
if (!GetTokenInformation(hToken, TokenPrivileges, NULL, 0, &dwLength))
goto Quit;
pTokenPriv = (PTOKEN_PRIVILEGES)LocalAlloc(LPTR, dwLength);
if (!pTokenPriv)
goto Quit;
if (GetTokenInformation(hToken, TokenPrivileges, pTokenPriv, dwLength, &dwLength))
{
UINT iPriv, cPrivs;
cPrivs = pTokenPriv->PrivilegeCount;
for (iPriv = 0; !ret && iPriv < cPrivs; ++iPriv)
{
ret = RtlEqualLuid(&Luid, &pTokenPriv->Privileges[iPriv].Luid);
}
}
LocalFree(pTokenPriv);
Quit:
if (hToken == hNewToken)
CloseHandle(hNewToken);
return ret;
}
BOOL IsShutdownAllowed(VOID)
{
return SHTestTokenPrivilegeW(NULL, SE_SHUTDOWN_NAME);
}
/*************************************************************************
* IsSuspendAllowed (SHELL32.53)
*/
BOOL WINAPI IsSuspendAllowed(VOID)
{
TRACE("()\n");
return IsShutdownAllowed() && IsPwrSuspendAllowed();
}
/*************************************************************************
* SHGetShellStyleHInstance (SHELL32.749)
*/
EXTERN_C HINSTANCE
WINAPI
SHGetShellStyleHInstance(VOID)
{
HINSTANCE hInst = NULL;
WCHAR szPath[MAX_PATH], szColorName[100];
HRESULT hr;
CStringW strShellStyle;
TRACE("SHGetShellStyleHInstance called\n");
/* First, attempt to load the shellstyle dll from the current active theme */
hr = GetCurrentThemeName(szPath, _countof(szPath), szColorName, _countof(szColorName), NULL, 0);
if (FAILED(hr))
goto DoDefault;
/* Strip the theme filename */
PathRemoveFileSpecW(szPath);
strShellStyle = szPath;
strShellStyle += L"\\Shell\\";
strShellStyle += szColorName;
strShellStyle += L"\\ShellStyle.dll";
hInst = LoadLibraryExW(strShellStyle, NULL, LOAD_LIBRARY_AS_DATAFILE);
if (hInst)
return hInst;
/* Otherwise, use the version stored in the System32 directory */
DoDefault:
if (!ExpandEnvironmentStringsW(L"%SystemRoot%\\System32\\ShellStyle.dll",
szPath, _countof(szPath)))
{
ERR("Expand failed\n");
return NULL;
}
return LoadLibraryExW(szPath, NULL, LOAD_LIBRARY_AS_DATAFILE);
}
/*************************************************************************
* SHCreatePropertyBag (SHELL32.715)
*/
EXTERN_C HRESULT
WINAPI
SHCreatePropertyBag(_In_ REFIID riid, _Out_ void **ppvObj)
{
return SHCreatePropertyBagOnMemory(STGM_READWRITE, riid, ppvObj);
}
/*************************************************************************
* SheRemoveQuotesA (SHELL32.@)
*/
EXTERN_C LPSTR
WINAPI
SheRemoveQuotesA(LPSTR psz)
{
PCHAR pch;
if (*psz == '"')
{
for (pch = psz + 1; *pch && *pch != '"'; ++pch)
{
*(pch - 1) = *pch;
}
if (*pch == '"')
*(pch - 1) = ANSI_NULL;
}
return psz;
}
/*************************************************************************
* SheRemoveQuotesW (SHELL32.@)
*
* ExtractAssociatedIconExW uses this function.
*/
EXTERN_C LPWSTR
WINAPI
SheRemoveQuotesW(LPWSTR psz)
{
PWCHAR pch;
if (*psz == L'"')
{
for (pch = psz + 1; *pch && *pch != L'"'; ++pch)
{
*(pch - 1) = *pch;
}
if (*pch == L'"')
*(pch - 1) = UNICODE_NULL;
}
return psz;
}
/*************************************************************************
* SHFindComputer [SHELL32.91]
*
* Invokes the shell search in My Computer. Used in SHFindFiles.
* Two parameters are ignored.
*/
EXTERN_C BOOL
WINAPI
SHFindComputer(LPCITEMIDLIST pidlRoot, LPCITEMIDLIST pidlSavedSearch)
{
UNREFERENCED_PARAMETER(pidlRoot);
UNREFERENCED_PARAMETER(pidlSavedSearch);
TRACE("%p %p\n", pidlRoot, pidlSavedSearch);
IContextMenu *pCM;
HRESULT hr = CoCreateInstance(CLSID_ShellSearchExt, NULL, CLSCTX_INPROC_SERVER,
IID_IContextMenu, (void **)&pCM);
if (FAILED(hr))
{
ERR("0x%08X\n", hr);
return hr;
}
CMINVOKECOMMANDINFO InvokeInfo = { sizeof(InvokeInfo) };
InvokeInfo.lpParameters = "{996E1EB1-B524-11D1-9120-00A0C98BA67D}";
InvokeInfo.nShow = SW_SHOWNORMAL;
hr = pCM->InvokeCommand(&InvokeInfo);
pCM->Release();
return SUCCEEDED(hr);
}
static HRESULT
Int64ToStr(
_In_ LONGLONG llValue,
_Out_writes_(cchValue) LPWSTR pszValue,
_In_ UINT cchValue)
{
WCHAR szBuff[40];
UINT ich = 0, ichValue;
#if (WINVER >= _WIN32_WINNT_VISTA)
BOOL bMinus = (llValue < 0);
if (bMinus)
llValue = -llValue;
#endif
if (cchValue <= 0)
return E_FAIL;
do
{
szBuff[ich++] = (WCHAR)(L'0' + (llValue % 10));
llValue /= 10;
} while (llValue != 0 && ich < _countof(szBuff) - 1);
#if (WINVER >= _WIN32_WINNT_VISTA)
if (bMinus && ich < _countof(szBuff))
szBuff[ich++] = '-';
#endif
for (ichValue = 0; ich > 0 && ichValue < cchValue; ++ichValue)
{
--ich;
pszValue[ichValue] = szBuff[ich];
}
if (ichValue >= cchValue)
{
pszValue[cchValue - 1] = UNICODE_NULL;
return E_FAIL;
}
pszValue[ichValue] = UNICODE_NULL;
return S_OK;
}
static VOID
Int64GetNumFormat(
_Out_ NUMBERFMTW *pDest,
_In_opt_ const NUMBERFMTW *pSrc,
_In_ DWORD dwNumberFlags,
_Out_writes_(cchDecimal) LPWSTR pszDecimal,
_In_ INT cchDecimal,
_Out_writes_(cchThousand) LPWSTR pszThousand,
_In_ INT cchThousand)
{
WCHAR szBuff[20];
if (pSrc)
*pDest = *pSrc;
else
dwNumberFlags = 0;
if (!(dwNumberFlags & FMT_USE_NUMDIGITS))
{
GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_IDIGITS, szBuff, _countof(szBuff));
pDest->NumDigits = StrToIntW(szBuff);
}
if (!(dwNumberFlags & FMT_USE_LEADZERO))
{
GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_ILZERO, szBuff, _countof(szBuff));
pDest->LeadingZero = StrToIntW(szBuff);
}
if (!(dwNumberFlags & FMT_USE_GROUPING))
{
GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_SGROUPING, szBuff, _countof(szBuff));
pDest->Grouping = StrToIntW(szBuff);
}
if (!(dwNumberFlags & FMT_USE_DECIMAL))
{
GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_SDECIMAL, pszDecimal, cchDecimal);
pDest->lpDecimalSep = pszDecimal;
}
if (!(dwNumberFlags & FMT_USE_THOUSAND))
{
GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_STHOUSAND, pszThousand, cchThousand);
pDest->lpThousandSep = pszThousand;
}
if (!(dwNumberFlags & FMT_USE_NEGNUMBER))
{
GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_INEGNUMBER, szBuff, _countof(szBuff));
pDest->NegativeOrder = StrToIntW(szBuff);
}
}
/*************************************************************************
* Int64ToString [SHELL32.209]
*
* @see http://undoc.airesoft.co.uk/shell32.dll/Int64ToString.php
*/
EXTERN_C
INT WINAPI
Int64ToString(
_In_ LONGLONG llValue,
_Out_writes_(cchOut) LPWSTR pszOut,
_In_ UINT cchOut,
_In_ BOOL bUseFormat,
_In_opt_ const NUMBERFMTW *pNumberFormat,
_In_ DWORD dwNumberFlags)
{
INT ret;
NUMBERFMTW NumFormat;
WCHAR szValue[80], szDecimalSep[6], szThousandSep[6];
Int64ToStr(llValue, szValue, _countof(szValue));
if (bUseFormat)
{
Int64GetNumFormat(&NumFormat, pNumberFormat, dwNumberFlags,
szDecimalSep, _countof(szDecimalSep),
szThousandSep, _countof(szThousandSep));
ret = GetNumberFormatW(LOCALE_USER_DEFAULT, 0, szValue, &NumFormat, pszOut, cchOut);
if (ret)
--ret;
return ret;
}
if (FAILED(StringCchCopyW(pszOut, cchOut, szValue)))
return 0;
return lstrlenW(pszOut);
}
/*************************************************************************
* LargeIntegerToString [SHELL32.210]
*
* @see http://undoc.airesoft.co.uk/shell32.dll/LargeIntegerToString.php
*/
EXTERN_C
INT WINAPI
LargeIntegerToString(
_In_ const LARGE_INTEGER *pLargeInt,
_Out_writes_(cchOut) LPWSTR pszOut,
_In_ UINT cchOut,
_In_ BOOL bUseFormat,
_In_opt_ const NUMBERFMTW *pNumberFormat,
_In_ DWORD dwNumberFlags)
{
return Int64ToString(pLargeInt->QuadPart, pszOut, cchOut, bUseFormat,
pNumberFormat, dwNumberFlags);
}
/*************************************************************************
* CopyStreamUI [SHELL32.726]
*
* Copy a stream to another stream with optional progress display.
*/
EXTERN_C
HRESULT WINAPI
CopyStreamUI(
_In_ IStream *pSrc,
_Out_ IStream *pDst,
_Inout_opt_ IProgressDialog *pProgress,
_In_opt_ DWORDLONG dwlSize)
{
HRESULT hr = E_FAIL;
DWORD cbBuff, cbRead, dwSizeToWrite;
DWORDLONG cbDone;
LPVOID pBuff;
CComHeapPtr<BYTE> pHeapPtr;
STATSTG Stat;
BYTE abBuff[1024];
TRACE("(%p, %p, %p, %I64u)\n", pSrc, pDst, pProgress, dwlSize);
if (dwlSize == 0) // Invalid size?
{
// Get the stream size
ZeroMemory(&Stat, sizeof(Stat));
if (FAILED(pSrc->Stat(&Stat, STATFLAG_NONAME)))
pProgress = NULL; // No size info. Disable progress
else
dwlSize = Stat.cbSize.QuadPart;
}
if (!pProgress) // Progress is disabled?
{
ULARGE_INTEGER uliSize;
if (dwlSize > 0)
uliSize.QuadPart = dwlSize;
else
uliSize.HighPart = uliSize.LowPart = INVALID_FILE_SIZE;
return pSrc->CopyTo(pDst, uliSize, NULL, NULL); // One punch
}
// Allocate the buffer if necessary
if (dwlSize > 0 && dwlSize <= sizeof(abBuff))
{
cbBuff = sizeof(abBuff);
pBuff = abBuff;
}
else
{
#define COPY_STREAM_DEFAULT_BUFFER_SIZE 0x4000
cbBuff = COPY_STREAM_DEFAULT_BUFFER_SIZE;
if (pHeapPtr.AllocateBytes(cbBuff))
{
pBuff = pHeapPtr;
}
else // Low memory?
{
cbBuff = sizeof(abBuff);
pBuff = abBuff;
}
#undef COPY_STREAM_DEFAULT_BUFFER_SIZE
}
// Start reading
LARGE_INTEGER zero;
zero.QuadPart = 0;
pSrc->Seek(zero, 0, NULL);
pDst->Seek(zero, 0, NULL);
cbDone = 0;
pProgress->SetProgress64(cbDone, dwlSize);
// Repeat reading and writing until goal
for (;;)
{
hr = pSrc->Read(pBuff, cbBuff, &cbRead);
if (FAILED(hr))
break;
// Calculate the size to write
if (dwlSize > 0)
dwSizeToWrite = (DWORD)min((DWORDLONG)(dwlSize - cbDone), (DWORDLONG)cbRead);
else
dwSizeToWrite = cbRead;
if (dwSizeToWrite == 0) // No need to write?
{
hr = S_OK;
break;
}
hr = pDst->Write(pBuff, dwSizeToWrite, NULL);
if (hr != S_OK)
break;
cbDone += dwSizeToWrite;
if (pProgress->HasUserCancelled()) // Cancelled?
{
hr = HRESULT_FROM_WIN32(ERROR_CANCELLED);
break;
}
pProgress->SetProgress64(cbDone, dwlSize);
if (dwlSize > 0 && cbDone >= dwlSize) // Reached the goal?
{
hr = S_OK;
break;
}
}
return hr;
}
/*************************************************************************
* SHOpenPropSheetA [SHELL32.707]
*
* @see https://learn.microsoft.com/en-us/windows/win32/api/shlobj/nf-shlobj-shopenpropsheeta
*/
EXTERN_C
BOOL WINAPI
SHOpenPropSheetA(
_In_opt_ LPCSTR pszCaption,
_In_opt_ HKEY *ahKeys,
_In_ UINT cKeys,
_In_ const CLSID *pclsidDefault,
_In_ IDataObject *pDataObject,
_In_opt_ IShellBrowser *pShellBrowser,
_In_opt_ LPCSTR pszStartPage)
{
CStringW strStartPageW, strCaptionW;
LPCWSTR pszCaptionW = NULL, pszStartPageW = NULL;
TRACE("(%s, %p, %u, %p, %p, %p, %s)", debugstr_a(pszCaption), ahKeys, cKeys, pclsidDefault,
pDataObject, pShellBrowser, debugstr_a(pszStartPage));
if (pszCaption)
{
strStartPageW = pszCaption;
pszCaptionW = strCaptionW;
}
if (pszStartPage)
{
strStartPageW = pszStartPage;
pszStartPageW = strStartPageW;
}
return SHOpenPropSheetW(pszCaptionW, ahKeys, cKeys, pclsidDefault,
pDataObject, pShellBrowser, pszStartPageW);
}
/*************************************************************************
* Activate_RunDLL [SHELL32.105]
*
* Unlocks the foreground window and allows the shell window to become the
* foreground window. Every parameter is unused.
*/
EXTERN_C
BOOL WINAPI
Activate_RunDLL(
_In_ HWND hwnd,
_In_ HINSTANCE hinst,
_In_ LPCWSTR cmdline,
_In_ INT cmdshow)
{
DWORD dwProcessID;
UNREFERENCED_PARAMETER(hwnd);
UNREFERENCED_PARAMETER(hinst);
UNREFERENCED_PARAMETER(cmdline);
UNREFERENCED_PARAMETER(cmdshow);
TRACE("(%p, %p, %s, %d)\n", hwnd, hinst, debugstr_w(cmdline), cmdline);
GetWindowThreadProcessId(GetShellWindow(), &dwProcessID);
return AllowSetForegroundWindow(dwProcessID);
}
/*************************************************************************
* SHStartNetConnectionDialogA (SHELL32.12)
*
* @see https://learn.microsoft.com/en-us/windows/win32/api/shlobj_core/nf-shlobj_core-shstartnetconnectiondialoga
*/
EXTERN_C
HRESULT WINAPI
SHStartNetConnectionDialogA(
_In_ HWND hwnd,
_In_ LPCSTR pszRemoteName,
_In_ DWORD dwType)
{
LPCWSTR pszRemoteNameW = NULL;
CStringW strRemoteNameW;
TRACE("(%p, %s, %lu)\n", hwnd, debugstr_a(pszRemoteName), dwType);
if (pszRemoteName)
{
strRemoteNameW = pszRemoteName;
pszRemoteNameW = strRemoteNameW;
}
return SHStartNetConnectionDialogW(hwnd, pszRemoteNameW, dwType);
}
/*************************************************************************
* Helper functions for PathIsEqualOrSubFolder
*/
static INT
DynamicPathCommonPrefixW(
_In_ LPCWSTR lpszPath1,
_In_ LPCWSTR lpszPath2,
_Out_ CStringW& strPath)
{
SIZE_T cchPath1 = wcslen(lpszPath1);
SIZE_T cchPath2 = wcslen(lpszPath2);
LPWSTR lpszPath = strPath.GetBuffer((INT)max(cchPath1, cchPath2) + 16);
INT ret = PathCommonPrefixW(lpszPath1, lpszPath2, lpszPath);
strPath.ReleaseBuffer();
return ret;
}
EXTERN_C HRESULT WINAPI
SHGetPathCchFromIDListW(LPCITEMIDLIST pidl, LPWSTR pszPath, SIZE_T cchPathMax);
static HRESULT
DynamicSHGetPathFromIDListW(
_In_ LPCITEMIDLIST pidl,
_Out_ CStringW& strPath)
{
HRESULT hr;
for (UINT cchPath = MAX_PATH;; cchPath *= 2)
{
LPWSTR lpszPath = strPath.GetBuffer(cchPath);
if (!lpszPath)
return E_OUTOFMEMORY;
hr = SHGetPathCchFromIDListW(pidl, lpszPath, cchPath);
strPath.ReleaseBuffer();
if (hr != E_NOT_SUFFICIENT_BUFFER)
break;
if (cchPath >= MAXUINT / 2)
{
hr = E_FAIL;
break;
}
}
if (FAILED(hr))
strPath.Empty();
return hr;
}
static HRESULT
DynamicSHGetSpecialFolderPathW(
_In_ HWND hwndOwner,
_Out_ CStringW& strPath,
_In_ INT nCSIDL,
_In_ BOOL bCreate)
{
LPITEMIDLIST pidl;
HRESULT hr = SHGetSpecialFolderLocation(hwndOwner, nCSIDL, &pidl);
if (SUCCEEDED(hr))
{
hr = DynamicSHGetPathFromIDListW(pidl, strPath);
CoTaskMemFree(pidl);
}
if (FAILED(hr))
strPath.Empty();
else if (bCreate)
CreateDirectoryW(strPath, NULL);
return hr;
}
static VOID
DynamicPathRemoveBackslashW(
_Out_ CStringW& strPath)
{
INT nLength = strPath.GetLength();
if (nLength > 0 && strPath[nLength - 1] == L'\\')
strPath = strPath.Left(nLength - 1);
}
/*************************************************************************
* PathIsEqualOrSubFolder (SHELL32.755)
*/
EXTERN_C
BOOL WINAPI
PathIsEqualOrSubFolder(
_In_ LPCWSTR pszPath1OrCSIDL,
_In_ LPCWSTR pszPath2)
{
CStringW strCommon, strPath1;
TRACE("(%s %s)\n", debugstr_w(pszPath1OrCSIDL), debugstr_w(pszPath2));
if (IS_INTRESOURCE(pszPath1OrCSIDL))
{
DynamicSHGetSpecialFolderPathW(
NULL, strPath1, LOWORD(pszPath1OrCSIDL) | CSIDL_FLAG_DONT_VERIFY, FALSE);
}
else
{
strPath1 = pszPath1OrCSIDL;
}
DynamicPathRemoveBackslashW(strPath1);
if (!DynamicPathCommonPrefixW(strPath1, pszPath2, strCommon))
return FALSE;
return strPath1.CompareNoCase(strCommon) == 0;
}