AdjustTokenPrivileges().

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2 total messages Started by Bogdan Sun, 30 Mar 2003 09:45

#17225

Author: Bogdan
Date: Sun, 30 Mar 2003 09:45

23 lines
1803 bytes

    I'm trying to shutdown Windows XP using ExitWindowsEx()
and I need to enable this privilege using AdjustTokenPrivileges().
    Does anyone know how to do this exactly(samplecode)?
I've tried the following code, but it seems it doesn't work.

//----------------------------------------------------------------
TOKEN_PRIVILEGES Privileges;
LUID_AND_ATTRIBUTES *Attributes=new LUID_AND_ATTRIBUTES[1];
bool Result=true;

LookupPrivilegeValue(NULL,SE_SHUTDOWN_NAME,
                                  &(Attributes->Luid));
Attributes->Attributes=SE_PRIVILEGE_ENABLED;
Privileges.PrivilegeCount=1;
Privileges.Privileges=Attributes;
Result=AdjustTokenPrivileges(NULL,false,&Privileges,0,NULL,NULL);

if(Result==false) ShowMessage("AdjustTokenPrivileges() failed.");

ExitWindowsEx(EWX_SHUTDOWN,0);
//-----------------------------------------------------------------

Bogdan.

Re: AdjustTokenPrivileges().

#17229

Author: Nick B. Cassos
Date: Sun, 30 Mar 2003 14:19

36 lines
1952 bytes

Try the following code...

bool EnablePrivilege(const char *APrivilege)
{
    bool   Result = false;
    HANDLE AToken = INVALID_HANDLE_VALUE;

    if (OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES,
&AToken) != 0)
    {
        unsigned char ABuf[sizeof(TOKEN_PRIVILEGES ) +
sizeof(LUID_AND_ATTRIBUTES)];
        TOKEN_PRIVILEGES  *pBuf =(TOKEN_PRIVILEGES*) ABuf;

        if (LookupPrivilegeValue(NULL, APrivilege,
&pBuf->Privileges->Luid) != 0)
        {
            pBuf->PrivilegeCount         = 1;
            pBuf->Privileges->Attributes = SE_PRIVILEGE_ENABLED;

            if (AdjustTokenPrivileges(AToken, FALSE, pBuf, 0, NULL,
NULL) != 0)
            Result = true;
        }

        CloseHandle(AToken);
    }

    return Result;
}

On Sun, 30 Mar 2003 12:45:20 +0300, "Bogdan" <boprea@xnet.ro> wrote:

>    I'm trying to shutdown Windows XP using ExitWindowsEx()
>and I need to enable this privilege using AdjustTokenPrivileges().
>[snipped]

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