Thread: Access token privilege attributes

  1. #1
    mustang benny bennyandthejets's Avatar
    Join Date
    Jul 2002

    Access token privilege attributes

    I have a program that lists all of the privileges of a certain access token and their attributes. However, a number of privileges don't have any attributes associated with them. Does this mean they are not enabled? And if so why? I am the administrator of my computer.

    Some of them are these:
    Microsoft Visual Studio .NET 2003 Enterprise Architect
    Windows XP Pro

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    Programming FAQ

  2. #2
    id id
    One must specifically enable them for the process:

    Usage: SetProcessPrivilege(SE_SHUTDOWN_NAME);
    BOOL SetProcessPrivilege(LPCTSTR lpPrivilege) {
    	/* This function enables a privilege for the current process */
    	/* lpPrivilege can be either a privilege constant eg. SE_SHUTDOWN_NAME
    	 * which is DEFINEd in the windows headers to the string 
    	 * "SeShutdownPrivilege" or the string can be used directly. */
    	HANDLE hToken;
    	LUID luid;
    	/* Check that we are a Win NT system before proceeding */
    	osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
    	GetVersionEx (&osvi);
    	if (osvi.dwPlatformId != VER_PLATFORM_WIN32_NT)
    		PRINTF("Error: System is not NT based");
    		return FALSE;
    	/* Get the local id of our desired privilege */
    	if ( !LookupPrivilegeValue( 
    		NULL,               // lookup privilege on local system
    		lpPrivilege,        // privilege to lookup 
    		&luid ) )           // receives LUID of privilege
    		PRINTF("LookupPrivilegeValue error: %u\n", GetLastError() ); 
    		return FALSE; 
    	/* Fill in TOKEN_PRIVILEGES structure */
    	tp.PrivilegeCount = 1;
    	tp.Privileges[0].Luid = luid;   // the luid of the privilege to enable
    	tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
    	/* Get the access token for the current process */
    	if ( !OpenProcessToken(
    		&hToken ) )
    		PRINTF("OpenProcessToken error: %u\n", GetLastError() ); 
    		return FALSE; 
    	/* Enable the privilege */
    	if ( !AdjustTokenPrivileges(
    	       hToken,         // access token
    	       FALSE,          // don't disable all privileges
    	       &tp,            // TOKEN_PRIVILEGES struct
    	       (PDWORD) NULL) )
    		PRINTF("AdjustTokenPrivileges error: %u\n", GetLastError() ); 
    		return FALSE; 
    	/* Close the process access token */
    	return TRUE; //success

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