一种新的穿透防火墙的数据传输技术

    else
    {
        return false;
    }

    return true;
}  


/*++

This routine is used to get the DNS process's Id
  
Here, I use WTSEnumerateProcesses to get process user Sid,
and then get the process user name. Beacause as it's a "NETWORK SERVICE",
we cann't use OpenProcessToken to catch the DNS process's token information,
even if we has the privilege in catching the SYSTEM's.

--*/
DWORD GetDNSProcessId()
{
    PWTS_PROCESS_INFO pProcessInfo = NULL;
    DWORD             ProcessCount = 0;
    char              szUserName[255];
    DWORD              Id = -1;

    if (WTSEnumerateProcesses(WTS_CURRENT_SERVER_HANDLE, 0, 1, &pProcessInfo, &ProcessCount))
    {
        // dump each process description
        for (DWORD CurrentProcess = 0; CurrentProcess < ProcessCount; CurrentProcess++)
        {

            if( strcmp(pProcessInfo[CurrentProcess].pProcessName, "svchost.exe") == 0 )
            {
                GetUserNameFromSid(pProcessInfo[CurrentProcess].pUserSid, szUserName);
                if( strcmp(szUserName, "NETWORK SERVICE") == 0)
                {
                    Id = pProcessInfo[CurrentProcess].ProcessId;
                    break;
                }
            }
        }

        WTSFreeMemory(pProcessInfo);
    }

    return Id;
}


/*++
This doesn't work as we know, sign...
but you can use the routine for other useing...
--*/
/*
BOOL GetProcessUserFromId(char *szAccountName, DWORD PID)
{
    HANDLE hProcess = NULL,

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TAG标签:	技术 防火墙 if NULL return printf // the buf 进程