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boinc
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- WINSETUP: Copy the explorer primary token to get processes launched by the setup 

process to launch with reduced permissions.
        
    win_build/installerv2/redist/Windows/src/boinccas/
        boinccas.vcproj
        CALaunchBOINCManager.cpp
        launcher.cpp, .h
    win_build/installerv2/redist/Windows/Win32/
        boinccas.dll
        boinccas95.dll
    win_build/installerv2/redist/Windows/x64/
        boinccas.dll
        boinccas95.dll

svn path=/trunk/boinc/; revision=24826
This commit is contained in:
Rom Walton 2011-12-19 20:45:32 +00:00
parent 36ef681e28
commit 9d0553f7ea
9 changed files with 331 additions and 134 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
checkin_notes
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@ -9130,3 +9130,18 @@ Rom 19 Dec 2011
samples/vboxwrapper/
vboxwrapper.cpp
vbox.cpp, .h
Rom 19 Dec 2011
- WINSETUP: Copy the explorer primary token to get processes launched by the setup
process to launch with reduced permissions.
win_build/installerv2/redist/Windows/src/boinccas/
boinccas.vcproj
CALaunchBOINCManager.cpp
launcher.cpp, .h
win_build/installerv2/redist/Windows/Win32/
boinccas.dll
boinccas95.dll
win_build/installerv2/redist/Windows/x64/
boinccas.dll
boinccas95.dll

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win_build/installerv2/redist/Windows/Win32/boinccas.dll
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140
win_build/installerv2/redist/Windows/src/boinccas/CALaunchBOINCManager.cpp
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@ -20,28 +20,12 @@
#include "stdafx.h"
#include "boinccas.h"
#include "launcher.h"
#include "CALaunchBOINCManager.h"
#define CUSTOMACTION_NAME _T("CALaunchBOINCManager")
#define CUSTOMACTION_PROGRESSTITLE _T("Launching BOINC Manager")
#ifndef SECURITY_MANDATORY_LABEL_AUTHORITY
#define SECURITY_MANDATORY_LABEL_AUTHORITY {0,0,0,0,0,16}
#define SECURITY_MANDATORY_MEDIUM_RID (0x00002000L)
#define SE_GROUP_INTEGRITY (0x00000020L)
typedef struct _TOKEN_MANDATORY_LABEL {
SID_AND_ATTRIBUTES Label;
} TOKEN_MANDATORY_LABEL, *PTOKEN_MANDATORY_LABEL;
typedef enum MY_TOKEN_INFORMATION_CLASS {
TokenVirtualizationEnabled = 24,
TokenIntegrityLevel = 25
} MY_TOKEN_INFORMATION_CLASS, *PMY_TOKEN_INFORMATION_CLASS;
#endif
/////////////////////////////////////////////////////////////////////
//
// Function:
@ -75,141 +59,29 @@ CALaunchBOINCManager::~CALaunchBOINCManager()
//
/////////////////////////////////////////////////////////////////////
typedef BOOL (__stdcall *tSCREATEL)( IN DWORD, IN DWORD, IN DWORD, OUT SAFER_LEVEL_HANDLE*, OUT LPVOID );
typedef BOOL (__stdcall *tSCTFL)( IN SAFER_LEVEL_HANDLE, IN HANDLE, OUT HANDLE*, IN DWORD, OUT LPVOID );
typedef BOOL (__stdcall *tSCLOSEL)( IN SAFER_LEVEL_HANDLE );
UINT CALaunchBOINCManager::OnExecution()
{
static HMODULE advapi32lib = NULL;
static tSCREATEL pSCREATEL = NULL;
static tSCTFL pSCTFL = NULL;
static tSCLOSEL pSCLOSEL = NULL;
PROCESS_INFORMATION process_info;
STARTUPINFO startup_info;
SAFER_LEVEL_HANDLE hSaferHandle;
HANDLE hRestrictedToken;
SID_IDENTIFIER_AUTHORITY siaMLA = SECURITY_MANDATORY_LABEL_AUTHORITY;
PSID pSidMedium = NULL;
TOKEN_MANDATORY_LABEL TIL = {0};
DWORD dwEnableVirtualization = 1;
tstring strInstallDirectory;
tstring strBuffer;
UINT uiReturnValue = -1;
FILE* f;
memset(&process_info, 0, sizeof(process_info));
memset(&startup_info, 0, sizeof(startup_info));
startup_info.cb = sizeof(startup_info);
startup_info.dwFlags = STARTF_USESHOWWINDOW;
startup_info.wShowWindow = SW_SHOW;
f = fopen("LaunchManager.txt", "w");
if (!advapi32lib) {
advapi32lib = LoadLibraryA("advapi32.dll");
if (advapi32lib) {
pSCREATEL = (tSCREATEL)GetProcAddress(advapi32lib, "SaferCreateLevel");
pSCTFL = (tSCTFL)GetProcAddress(advapi32lib, "SaferComputeTokenFromLevel");
pSCLOSEL = (tSCLOSEL)GetProcAddress(advapi32lib, "SaferCloseLevel");
}
}
if (!pSCREATEL || !pSCTFL || !pSCLOSEL) {
return ERROR_FILE_NOT_FOUND;
}
uiReturnValue = GetProperty( _T("INSTALLDIR"), strInstallDirectory );
if ( uiReturnValue ) return uiReturnValue;
// Calculate a restricted token from the current token.
if (!pSCREATEL( SAFER_SCOPEID_USER, SAFER_LEVELID_NORMALUSER, SAFER_LEVEL_OPEN, &hSaferHandle, NULL ))
{
fwprintf(f, _T("SaferCreateLevel retval: '%d'\n"), GetLastError());
}
if (!pSCTFL( hSaferHandle, NULL, &hRestrictedToken, NULL, NULL ))
{
fwprintf(f, _T("SaferComputeTokenFromLevel retval: '%d'\n"), GetLastError());
}
AllocateAndInitializeSid(&siaMLA, 1, SECURITY_MANDATORY_MEDIUM_RID, 0, 0, 0, 0, 0, 0, 0, &pSidMedium);
TIL.Label.Attributes = SE_GROUP_INTEGRITY;
TIL.Label.Sid = pSidMedium;
if (!SetTokenInformation(hRestrictedToken, (TOKEN_INFORMATION_CLASS)TokenIntegrityLevel, &TIL, sizeof(TOKEN_MANDATORY_LABEL)))
{
fwprintf(f, _T("SaferComputeTokenFromLevel (TokenIntegrityLevel) retval: '%d'\n"), GetLastError());
}
if (!SetTokenInformation(hRestrictedToken, (TOKEN_INFORMATION_CLASS)TokenVirtualizationEnabled, &dwEnableVirtualization, sizeof(DWORD)))
{
fwprintf(f, _T("SaferComputeTokenFromLevel (TokenVirtualizationEnabled) retval: '%d'\n"), GetLastError());
}
strBuffer = tstring(_T("\"")) + strInstallDirectory + tstring(_T("boincmgr.exe\""));
fwprintf(f, _T("Attempting to launch boincmgr.exe\n"));
fwprintf(f, _T("Launching: '%s'\n"), strBuffer.c_str());
if (CreateProcessAsUser( hRestrictedToken, NULL, (LPWSTR)strBuffer.c_str(), NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, NULL, &startup_info, &process_info ))
{
fwprintf(f, _T("Success!!!\n"));
CloseHandle( process_info.hProcess );
CloseHandle( process_info.hThread );
}
else
{
fwprintf(f, _T("CreateProcessAsUser retval: '%d'\n"), GetLastError());
}
CreateProcessWithExplorerIL( (LPWSTR)strBuffer.c_str(), NULL );
strBuffer = tstring(_T("\"")) + strInstallDirectory + tstring(_T("gridrepublic.exe\""));
fwprintf(f, _T("Attempting to launch gridrepublic.exe\n"));
fwprintf(f, _T("Launching: '%s'\n"), strBuffer.c_str());
if (CreateProcessAsUser( hRestrictedToken, NULL, (LPWSTR)strBuffer.c_str(), NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, NULL, &startup_info, &process_info ))
{
fwprintf(f, _T("Success!!!\n"));
CloseHandle( process_info.hProcess );
CloseHandle( process_info.hThread );
}
else
{
fwprintf(f, _T("CreateProcessAsUser retval: '%d'\n"), GetLastError());
}
CreateProcessWithExplorerIL( (LPWSTR)strBuffer.c_str(), NULL );
strBuffer = tstring(_T("\"")) + strInstallDirectory + tstring(_T("charityengine.exe\""));
fwprintf(f, _T("Attempting to launch charityengine.exe\n"));
fwprintf(f, _T("Launching: '%s'\n"), strBuffer.c_str());
if (CreateProcessAsUser( hRestrictedToken, NULL, (LPWSTR)strBuffer.c_str(), NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, NULL, &startup_info, &process_info ))
{
fwprintf(f, _T("Success!!!\n"));
CloseHandle( process_info.hProcess );
CloseHandle( process_info.hThread );
}
else
{
fwprintf(f, _T("CreateProcessAsUser retval: '%d'\n"), GetLastError());
}
CreateProcessWithExplorerIL( (LPWSTR)strBuffer.c_str(), NULL );
strBuffer = tstring(_T("\"")) + strInstallDirectory + tstring(_T("progressthruprocessors.exe\""));
fwprintf(f, _T("Attempting to launch progressthruprocessors.exe\n"));
fwprintf(f, _T("Launching: '%s'\n"), strBuffer.c_str());
if (CreateProcessAsUser( hRestrictedToken, NULL, (LPWSTR)strBuffer.c_str(), NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, NULL, &startup_info, &process_info ))
{
fwprintf(f, _T("Success!!!\n"));
CloseHandle( process_info.hProcess );
CloseHandle( process_info.hThread );
}
else
{
fwprintf(f, _T("CreateProcessAsUser retval: '%d'\n"), GetLastError());
}
CreateProcessWithExplorerIL( (LPWSTR)strBuffer.c_str(), NULL );
fclose(f);
CloseHandle( hRestrictedToken );
pSCLOSEL( hSaferHandle );
return ERROR_SUCCESS;
}

8
win_build/installerv2/redist/Windows/src/boinccas/boinccas.vcproj
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@ -465,6 +465,10 @@
RelativePath=".\dirops.cpp"
>
</File>
<File
RelativePath=".\launcher.cpp"
>
</File>
<File
RelativePath=".\lkuprid.cpp"
>
@ -618,6 +622,10 @@
RelativePath=".\dirops.h"
>
</File>
<File
RelativePath=".\launcher.h"
>
</File>
<File
RelativePath=".\lkuprid.h"
>

298
win_build/installerv2/redist/Windows/src/boinccas/launcher.cpp Normal file
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@ -0,0 +1,298 @@
#include "stdafx.h"
#include "boinccas.h"
#include "launcher.h"
#ifndef SECURITY_MANDATORY_UNTRUSTED_RID
#define SECURITY_MANDATORY_UNTRUSTED_RID (0x00000000L)
#define SECURITY_MANDATORY_LOW_RID (0x00001000L)
#define SECURITY_MANDATORY_MEDIUM_RID (0x00002000L)
#define SECURITY_MANDATORY_HIGH_RID (0x00003000L)
#define SECURITY_MANDATORY_SYSTEM_RID (0x00004000L)
#define SECURITY_MANDATORY_PROTECTED_PROCESS_RID (0x00005000L)
typedef struct _TOKEN_MANDATORY_LABEL {
SID_AND_ATTRIBUTES Label;
} TOKEN_MANDATORY_LABEL, *PTOKEN_MANDATORY_LABEL;
typedef enum _MANDATORY_LEVEL {
MandatoryLevelUntrusted = 0,
MandatoryLevelLow,
MandatoryLevelMedium,
MandatoryLevelHigh,
MandatoryLevelSystem,
MandatoryLevelSecureProcess,
MandatoryLevelCount
} MANDATORY_LEVEL, *PMANDATORY_LEVEL;
#define TokenIntegrityLevel ((TOKEN_INFORMATION_CLASS)25)
#endif //!SECURITY_MANDATORY_UNTRUSTED_RID
/*!
@brief Function enables/disables/removes a privelege associated with the given token
@detailed Calls LookupPrivilegeValue() and AdjustTokenPrivileges()
@param[in] hToken - access token handle
@param[in] lpszPrivilege - name of privilege to enable/disable
@param[in] dwAttributes - (SE_PRIVILEGE_ENABLED) to enable or (0) disable or (SE_PRIVILEGE_REMOVED) to remove privilege
@return HRESULT code
@todo Removing was checked. To check enabling and disabling.
*/
inline HRESULT SetPrivilege(
HANDLE hToken,
LPCTSTR lpszPrivilege,
DWORD dwAttributes=SE_PRIVILEGE_ENABLED
)
{
HRESULT hr=S_OK;
LUID luid;
if ( LookupPrivilegeValue(
NULL, // lookup privilege on local system
lpszPrivilege, // privilege to lookup
&luid ) ) // receives LUID of privilege
{
TOKEN_PRIVILEGES tp;
tp.PrivilegeCount = 1;
tp.Privileges[0].Luid = luid;
tp.Privileges[0].Attributes = dwAttributes;
// Enable the privilege or disable all privileges.
if ( !AdjustTokenPrivileges(
hToken,
FALSE,
&tp,
sizeof(TOKEN_PRIVILEGES),
(PTOKEN_PRIVILEGES) NULL,
(PDWORD) NULL) )
hr=HRESULT_FROM_WIN32(GetLastError());
}//if(LookupPrivilegeValue(...))
else
hr=HRESULT_FROM_WIN32(GetLastError());
return hr;
}
/*!
Function removes the priveleges which are not associated by default with explorer.exe at Medium Integration Level in Vista
@returns HRESULT of the operation on SE_CREATE_GLOBAL_NAME (="SeCreateGlobalPrivilege")
*/
inline HRESULT ReducePrivilegesForMediumIL(HANDLE hToken)
{
HRESULT hr=S_OK;
hr=SetPrivilege(hToken, SE_CREATE_GLOBAL_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_BACKUP_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_CREATE_PAGEFILE_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, TEXT("SeCreateSymbolicLinkPrivilege"), SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_DEBUG_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_IMPERSONATE_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_INC_BASE_PRIORITY_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_INCREASE_QUOTA_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_LOAD_DRIVER_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_MANAGE_VOLUME_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_PROF_SINGLE_PROCESS_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_REMOTE_SHUTDOWN_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_RESTORE_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_SECURITY_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_SYSTEM_ENVIRONMENT_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_SYSTEM_PROFILE_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_SYSTEMTIME_NAME, SE_PRIVILEGE_REMOVED);
SetPrivilege(hToken, SE_TAKE_OWNERSHIP_NAME, SE_PRIVILEGE_REMOVED);
return hr;
}
#define TraceLN(Function, Line) OutputDebugStringA(Function " line:" #Line "\n")
/*!
@brief Gets Integration level of the given process in Vista.
In the older OS assumes the integration level is equal to SECURITY_MANDATORY_HIGH_RID
The function opens the process for all access and opens its token for all access.
Then it extracts token information and closes the handles.
@param[in] dwProcessId ID of the process to operate
@param[out] pdwProcessIL pointer to write the value
@return HRESULT
@retval <return value> { description }
@remarks Function check for OS version by querying the presence of Kernel32.GetProductInfo function.
This way is used due to the function is called from InstallShield12 script, so GetVersionEx returns incorrect value.
@todo restrict access rights when quering for tokens
*/
inline HRESULT GetProcessIL(DWORD dwProcessId, LPDWORD pdwProcessIL)
{
HRESULT hr=S_OK;
if(!pdwProcessIL)
hr=E_INVALIDARG;
if(SUCCEEDED(hr))
{
bool bVista=false;
{
// When the function is called from IS12, GetVersionEx returns dwMajorVersion=5 on Vista!
HMODULE hmodKernel32=LoadLibrary(L"Kernel32");
if(hmodKernel32 && GetProcAddress(hmodKernel32, "GetProductInfo"))
bVista=true;
if(hmodKernel32) FreeLibrary(hmodKernel32);
}
DWORD dwIL=SECURITY_MANDATORY_HIGH_RID;
if(bVista)
{//Vista
HANDLE hToken=NULL;
HANDLE hProcess=OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwProcessId);
if(hProcess)
{
if(OpenProcessToken(hProcess, TOKEN_ALL_ACCESS, &hToken))
{
PTOKEN_MANDATORY_LABEL pTIL=NULL;
DWORD dwSize=0;
if (!GetTokenInformation(hToken, TokenIntegrityLevel, NULL, 0, &dwSize)
&& ERROR_INSUFFICIENT_BUFFER==GetLastError() && dwSize)
pTIL=(PTOKEN_MANDATORY_LABEL)HeapAlloc(GetProcessHeap(), 0, dwSize);
if(pTIL && GetTokenInformation(hToken, TokenIntegrityLevel, pTIL, dwSize, &dwSize))
{
LPBYTE lpb=GetSidSubAuthorityCount(pTIL->Label.Sid);
if(lpb)
dwIL = *GetSidSubAuthority(pTIL->Label.Sid, *lpb-1);
else
hr=E_UNEXPECTED;
}
if(pTIL)
HeapFree(GetProcessHeap(), 0, pTIL);
CloseHandle(hToken);
}//if(OpenProcessToken(...))
CloseHandle(hProcess);
}//if(hProcess)
}//if(bVista)
if(SUCCEEDED(hr))
*pdwProcessIL=dwIL;
}//if(SUCCEEDED(hr))
return hr;
}
/*!
@brief Function launches process with the integration level of Explorer on Vista. On the previous OS, simply creates the process.
Function gets the integration level of the current process and Explorer, then launches the new process.
If the integration levels are equal, CreateProcess is called.
If Explorer has Medium IL, and the current process has High IL, new token is created, its rights are adjusted
and CreateProcessWithTokenW is called.
If Explorer has Medium IL, and the current process has High IL, error is returned.
@param[in] szProcessName - the name of exe file (see CreatePorcess())
@param[in] szCmdLine - the name of exe file (see CreatePorcess())
@return HRESULT code
@note The function cannot be used in services, due to if uses USER32.FindWindow() to get the proper instance of Explorer.
The parent of new process in taskmgr.exe, but not the current process.
@sa ReducePrivilegesForMediumIL()
*/
HRESULT CreateProcessWithExplorerIL(LPWSTR szProcessName, LPWSTR szCmdLine)
{
HRESULT hr=S_OK;
BOOL bRet;
HANDLE hToken;
HANDLE hNewToken;
bool bVista=false;
{ // When the function is called from IS12, GetVersionEx returns dwMajorVersion=5 on Vista!
HMODULE hmodKernel32=LoadLibrary(L"Kernel32");
if(hmodKernel32 && GetProcAddress(hmodKernel32, "GetProductInfo"))
bVista=true;
if(hmodKernel32) FreeLibrary(hmodKernel32);
}
PROCESS_INFORMATION ProcInfo = {0};
STARTUPINFO StartupInfo = {0};
if(bVista)
{
DWORD dwCurIL=SECURITY_MANDATORY_HIGH_RID;
DWORD dwExplorerID=0, dwExplorerIL=SECURITY_MANDATORY_HIGH_RID;
HWND hwndShell=::FindWindow( _T("Progman"), NULL);
if(hwndShell)
GetWindowThreadProcessId(hwndShell, &dwExplorerID);
hr=GetProcessIL(dwExplorerID, &dwExplorerIL);
if(SUCCEEDED(hr))
hr=GetProcessIL(GetCurrentProcessId(), &dwCurIL);
if(SUCCEEDED(hr))
{
if(dwCurIL==SECURITY_MANDATORY_HIGH_RID && dwExplorerIL==SECURITY_MANDATORY_MEDIUM_RID)
{
HANDLE hProcess=OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwExplorerID);
if(hProcess)
{
if(OpenProcessToken(hProcess, TOKEN_ALL_ACCESS, &hToken))
{
if(!DuplicateTokenEx(hToken, TOKEN_ALL_ACCESS, NULL,
SecurityImpersonation, TokenPrimary, &hNewToken))
hr=HRESULT_FROM_WIN32(GetLastError());
if(SUCCEEDED(hr))
{
if(dwCurIL==SECURITY_MANDATORY_MEDIUM_RID && dwExplorerIL==SECURITY_MANDATORY_MEDIUM_RID)
{
hr=ReducePrivilegesForMediumIL(hNewToken);
}//if(dwCurIL==...)
if(SUCCEEDED(hr))
{
typedef BOOL (WINAPI *LPFN_CreateProcessWithTokenW)(
HANDLE hToken,
DWORD dwLogonFlags,
LPCWSTR lpApplicationName,
LPWSTR lpCommandLine,
DWORD dwCreationFlags,
LPVOID lpEnvironment,
LPCWSTR lpCurrentDirectory,
LPSTARTUPINFOW lpStartupInfo,
LPPROCESS_INFORMATION lpProcessInfo
);
LPFN_CreateProcessWithTokenW fnCreateProcessWithTokenW=NULL;
HINSTANCE hmodAdvApi32=LoadLibraryA("AdvApi32");
if(hmodAdvApi32)
fnCreateProcessWithTokenW=(LPFN_CreateProcessWithTokenW)GetProcAddress(hmodAdvApi32, "CreateProcessWithTokenW");
if(fnCreateProcessWithTokenW)
{
bRet=fnCreateProcessWithTokenW(hNewToken, 0,
szProcessName, szCmdLine,
0, NULL, NULL, &StartupInfo, &ProcInfo);
if(!bRet)
hr=HRESULT_FROM_WIN32(GetLastError());
}
else
hr=E_UNEXPECTED;
if(hmodAdvApi32)
FreeLibrary(hmodAdvApi32);
}//if(SUCCEEDED(hr))
CloseHandle(hNewToken);
}//if (DuplicateTokenEx(...)
else
hr=HRESULT_FROM_WIN32(GetLastError());
CloseHandle(hToken);
}//if(OpenProcessToken(...))
else
hr=HRESULT_FROM_WIN32(GetLastError());
CloseHandle(hProcess);
}//if(hProcess)
}//if(dwCurIL==SECURITY_MANDATORY_HIGH_RID && dwExplorerIL==SECURITY_MANDATORY_MEDIUM_RID)
else if(dwCurIL==SECURITY_MANDATORY_MEDIUM_RID && dwExplorerIL==SECURITY_MANDATORY_HIGH_RID)
hr=E_ACCESSDENIED;
}//if(SUCCEEDED(hr))
}//if(bVista)
if(SUCCEEDED(hr) && !ProcInfo.dwProcessId)
{// 2K | XP | Vista & !UAC
bRet = CreateProcess(szProcessName, szCmdLine,
NULL, NULL, FALSE, 0, NULL, NULL, &StartupInfo, &ProcInfo);
if(!bRet)
hr=HRESULT_FROM_WIN32(GetLastError());
}// 2K | XP | Vista & !UAC
return hr;
}

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@ -0,0 +1,4 @@
#pragma once
HRESULT CreateProcessWithExplorerIL(LPWSTR szProcessName, LPWSTR szCmdLine);

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