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Sweden-Number/dlls/setupapi/misc.c

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/*
* Setupapi miscellaneous functions
*
* Copyright 2005 Eric Kohl
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winreg.h"
#include "setupapi.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include "setupapi_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(setupapi);
/**************************************************************************
* MyFree [SETUPAPI.@]
*
* Frees an allocated memory block from the process heap.
*
* PARAMS
* lpMem [I] pointer to memory block which will be freed
*
* RETURNS
* None
*/
VOID WINAPI MyFree(LPVOID lpMem)
{
TRACE("%p\n", lpMem);
HeapFree(GetProcessHeap(), 0, lpMem);
}
/**************************************************************************
* MyMalloc [SETUPAPI.@]
*
* Allocates memory block from the process heap.
*
* PARAMS
* dwSize [I] size of the allocated memory block
*
* RETURNS
* Success: pointer to allocated memory block
* Failure: NULL
*/
LPVOID WINAPI MyMalloc(DWORD dwSize)
{
TRACE("%lu\n", dwSize);
return HeapAlloc(GetProcessHeap(), 0, dwSize);
}
/**************************************************************************
* MyRealloc [SETUPAPI.@]
*
* Changes the size of an allocated memory block or allocates a memory
* block from the process heap.
*
* PARAMS
* lpSrc [I] pointer to memory block which will be resized
* dwSize [I] new size of the memory block
*
* RETURNS
* Success: pointer to the resized memory block
* Failure: NULL
*
* NOTES
* If lpSrc is a NULL-pointer, then MyRealloc allocates a memory
* block like MyMalloc.
*/
LPVOID WINAPI MyRealloc(LPVOID lpSrc, DWORD dwSize)
{
TRACE("%p %lu\n", lpSrc, dwSize);
if (lpSrc == NULL)
return HeapAlloc(GetProcessHeap(), 0, dwSize);
return HeapReAlloc(GetProcessHeap(), 0, lpSrc, dwSize);
}
/**************************************************************************
* DuplicateString [SETUPAPI.@]
*
* Duplicates a unicode string.
*
* PARAMS
* lpSrc [I] pointer to the unicode string that will be duplicated
*
* RETURNS
* Success: pointer to the duplicated unicode string
* Failure: NULL
*
* NOTES
* Call MyFree() to release the duplicated string.
*/
LPWSTR WINAPI DuplicateString(LPCWSTR lpSrc)
{
LPWSTR lpDst;
TRACE("%s\n", debugstr_w(lpSrc));
lpDst = MyMalloc((lstrlenW(lpSrc) + 1) * sizeof(WCHAR));
if (lpDst == NULL)
return NULL;
strcpyW(lpDst, lpSrc);
return lpDst;
}
/**************************************************************************
* QueryRegistryValue [SETUPAPI.@]
*
* Retrieves value data from the registry and allocates memory for the
* value data.
*
* PARAMS
* hKey [I] Handle of the key to query
* lpValueName [I] Name of value under hkey to query
* lpData [O] Destination for the values contents,
* lpType [O] Destination for the value type
* lpcbData [O] Destination for the size of data
*
* RETURNS
* Success: ERROR_SUCCESS
* Failure: Otherwise
*
* NOTES
* Use MyFree to release the lpData buffer.
*/
LONG WINAPI QueryRegistryValue(HKEY hKey,
LPCWSTR lpValueName,
LPBYTE *lpData,
LPDWORD lpType,
LPDWORD lpcbData)
{
LONG lError;
TRACE("%p %s %p %p %p\n",
hKey, debugstr_w(lpValueName), lpData, lpType, lpcbData);
/* Get required buffer size */
*lpcbData = 0;
lError = RegQueryValueExW(hKey, lpValueName, 0, lpType, NULL, lpcbData);
if (lError != ERROR_SUCCESS)
return lError;
/* Allocate buffer */
*lpData = MyMalloc(*lpcbData);
if (*lpData == NULL)
return ERROR_NOT_ENOUGH_MEMORY;
/* Query registry value */
lError = RegQueryValueExW(hKey, lpValueName, 0, lpType, *lpData, lpcbData);
if (lError != ERROR_SUCCESS)
MyFree(*lpData);
return lError;
}
/**************************************************************************
* IsUserAdmin [SETUPAPI.@]
*
* Checks whether the current user is a member of the Administrators group.
*
* PARAMS
* None
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI IsUserAdmin(VOID)
{
SID_IDENTIFIER_AUTHORITY Authority = {SECURITY_NT_AUTHORITY};
HANDLE hToken;
DWORD dwSize;
PTOKEN_GROUPS lpGroups;
PSID lpSid;
DWORD i;
BOOL bResult = FALSE;
TRACE("\n");
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
{
return FALSE;
}
if (!GetTokenInformation(hToken, TokenGroups, NULL, 0, &dwSize))
{
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
{
CloseHandle(hToken);
return FALSE;
}
}
lpGroups = MyMalloc(dwSize);
if (lpGroups == NULL)
{
CloseHandle(hToken);
return FALSE;
}
if (!GetTokenInformation(hToken, TokenGroups, lpGroups, dwSize, &dwSize))
{
MyFree(lpGroups);
CloseHandle(hToken);
return FALSE;
}
CloseHandle(hToken);
if (!AllocateAndInitializeSid(&Authority, 2, SECURITY_BUILTIN_DOMAIN_RID,
DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0,
&lpSid))
{
MyFree(lpGroups);
return FALSE;
}
for (i = 0; i < lpGroups->GroupCount; i++)
{
if (EqualSid(lpSid, &lpGroups->Groups[i].Sid))
{
bResult = TRUE;
break;
}
}
FreeSid(lpSid);
MyFree(lpGroups);
return bResult;
}
/**************************************************************************
* MultiByteToUnicode [SETUPAPI.@]
*
* Converts a multi-byte string to a Unicode string.
*
* PARAMS
* lpMultiByteStr [I] Multi-byte string to be converted
* uCodePage [I] Code page
*
* RETURNS
* Success: pointer to the converted Unicode string
* Failure: NULL
*
* NOTE
* Use MyFree to release the returned Unicode string.
*/
LPWSTR WINAPI MultiByteToUnicode(LPCSTR lpMultiByteStr, UINT uCodePage)
{
LPWSTR lpUnicodeStr;
int nLength;
TRACE("%s %d\n", debugstr_a(lpMultiByteStr), uCodePage);
nLength = MultiByteToWideChar(uCodePage, 0, lpMultiByteStr,
-1, NULL, 0);
if (nLength == 0)
return NULL;
lpUnicodeStr = MyMalloc(nLength * sizeof(WCHAR));
if (lpUnicodeStr == NULL)
return NULL;
if (!MultiByteToWideChar(uCodePage, 0, lpMultiByteStr,
nLength, lpUnicodeStr, nLength))
{
MyFree(lpUnicodeStr);
return NULL;
}
return lpUnicodeStr;
}
/**************************************************************************
* UnicodeToMultiByte [SETUPAPI.@]
*
* Converts a Unicode string to a multi-byte string.
*
* PARAMS
* lpUnicodeStr [I] Unicode string to be converted
* uCodePage [I] Code page
*
* RETURNS
* Success: pointer to the converted multi-byte string
* Failure: NULL
*
* NOTE
* Use MyFree to release the returned multi-byte string.
*/
LPSTR WINAPI UnicodeToMultiByte(LPCWSTR lpUnicodeStr, UINT uCodePage)
{
LPSTR lpMultiByteStr;
int nLength;
TRACE("%s %d\n", debugstr_w(lpUnicodeStr), uCodePage);
nLength = WideCharToMultiByte(uCodePage, 0, lpUnicodeStr, -1,
NULL, 0, NULL, NULL);
if (nLength == 0)
return NULL;
lpMultiByteStr = MyMalloc(nLength);
if (lpMultiByteStr == NULL)
return NULL;
if (!WideCharToMultiByte(uCodePage, 0, lpUnicodeStr, -1,
lpMultiByteStr, nLength, NULL, NULL))
{
MyFree(lpMultiByteStr);
return NULL;
}
return lpMultiByteStr;
}
/**************************************************************************
* DoesUserHavePrivilege [SETUPAPI.@]
*
* Check whether the current user has got a given privilege.
*
* PARAMS
* lpPrivilegeName [I] Name of the privilege to be checked
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI DoesUserHavePrivilege(LPCWSTR lpPrivilegeName)
{
HANDLE hToken;
DWORD dwSize;
PTOKEN_PRIVILEGES lpPrivileges;
LUID PrivilegeLuid;
DWORD i;
BOOL bResult = FALSE;
TRACE("%s\n", debugstr_w(lpPrivilegeName));
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
return FALSE;
if (!GetTokenInformation(hToken, TokenPrivileges, NULL, 0, &dwSize))
{
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
{
CloseHandle(hToken);
return FALSE;
}
}
lpPrivileges = MyMalloc(dwSize);
if (lpPrivileges == NULL)
{
CloseHandle(hToken);
return FALSE;
}
if (!GetTokenInformation(hToken, TokenPrivileges, lpPrivileges, dwSize, &dwSize))
{
MyFree(lpPrivileges);
CloseHandle(hToken);
return FALSE;
}
CloseHandle(hToken);
if (!LookupPrivilegeValueW(NULL, lpPrivilegeName, &PrivilegeLuid))
{
MyFree(lpPrivileges);
return FALSE;
}
for (i = 0; i < lpPrivileges->PrivilegeCount; i++)
{
if (lpPrivileges->Privileges[i].Luid.HighPart == PrivilegeLuid.HighPart &&
lpPrivileges->Privileges[i].Luid.LowPart == PrivilegeLuid.LowPart)
{
bResult = TRUE;
}
}
MyFree(lpPrivileges);
return bResult;
}
/**************************************************************************
* EnablePrivilege [SETUPAPI.@]
*
* Enables or disables one of the current users privileges.
*
* PARAMS
* lpPrivilegeName [I] Name of the privilege to be changed
* bEnable [I] TRUE: Enables the privilege
* FALSE: Disables the privilege
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI EnablePrivilege(LPCWSTR lpPrivilegeName, BOOL bEnable)
{
TOKEN_PRIVILEGES Privileges;
HANDLE hToken;
BOOL bResult;
TRACE("%s %s\n", debugstr_w(lpPrivilegeName), bEnable ? "TRUE" : "FALSE");
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
return FALSE;
Privileges.PrivilegeCount = 1;
Privileges.Privileges[0].Attributes = (bEnable) ? SE_PRIVILEGE_ENABLED : 0;
if (!LookupPrivilegeValueW(NULL, lpPrivilegeName,
&Privileges.Privileges[0].Luid))
{
CloseHandle(hToken);
return FALSE;
}
bResult = AdjustTokenPrivileges(hToken, FALSE, &Privileges, 0, NULL, NULL);
CloseHandle(hToken);
return bResult;
}
BOOL WINAPI DelayedMove(LPCWSTR lpExistingFileName, LPCWSTR lpNewFileName)
{
return MoveFileExW(lpExistingFileName, lpNewFileName,
MOVEFILE_REPLACE_EXISTING | MOVEFILE_DELAY_UNTIL_REBOOT);
}
BOOL WINAPI FileExists(LPCWSTR lpFileName, LPWIN32_FIND_DATAW lpFileFindData)
{
WIN32_FIND_DATAW FindData;
HANDLE hFind;
UINT uErrorMode;
DWORD dwError;
uErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
hFind = FindFirstFileW(lpFileName, &FindData);
if (hFind == INVALID_HANDLE_VALUE)
{
dwError = GetLastError();
SetErrorMode(uErrorMode);
SetLastError(dwError);
return FALSE;
}
FindClose(hFind);
if (lpFileFindData)
memcpy(lpFileFindData, &FindData, sizeof(WIN32_FIND_DATAW));
return TRUE;
}
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