Q> Как узнать какие привилегии есть у пользователя ?
A>

#include <windows.h>
#include <stdio.h>
#pragma hdrstop

void main()
{
HANDLE hToken;
LUID setcbnameValue;
TOKEN_PRIVILEGES tkp;
DWORD errcod;
LPVOID lpMsgBuf;
LPCTSTR msgptr;

UCHAR InfoBuffer[1000];
PTOKEN_PRIVILEGES ptgPrivileges = (PTOKEN_PRIVILEGES) InfoBuffer;
DWORD dwInfoBufferSize;
DWORD dwPrivilegeNameSize;
DWORD dwDisplayNameSize;
UCHAR ucPrivilegeName[500];
UCHAR ucDisplayName[500];
DWORD dwLangId;
UINT i;

if ( ! OpenProcessToken( GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken ) )
{
puts( "OpenProcessToken" );
return;
}

// ---------------------------------------------------------------------
// enumerate currently held privs (NOTE: not *enabled* privs, just the
// ones you _could_ enable as in the last part)

GetTokenInformation( hToken, TokenPrivileges, InfoBuffer,
sizeof InfoBuffer, &dwInfoBufferSize);

printf( "Account privileges: \n\n" );
for( i = 0; i < ptgPrivileges->PrivilegeCount; i ++ )
{
dwPrivilegeNameSize = sizeof ucPrivilegeName;
dwDisplayNameSize = sizeof ucDisplayName;
LookupPrivilegeName( NULL, &ptgPrivileges->Privileges[i].Luid,
ucPrivilegeName, &dwPrivilegeNameSize );
LookupPrivilegeDisplayName( NULL, ucPrivilegeName,
ucDisplayName, &dwDisplayNameSize, &dwLangId );
printf( "%40s (%s)\n", ucDisplayName, ucPrivilegeName );
}

}