Re: Win32 port

[Kevin³ Davis <kevin.davis () mindless com>]

A while back I posted a problem I had with nmap crashing on Windows boxes -
sometimes.  Andy Lutomirski posted a patch that fixed things for me.
Hopefully this has made it into the developer's hands and will be
implemented in the next release.  See below for the fix:




Change readip_rawrecv in rawrecv.c to this:

char *rawrecv_readip(pcap_t *pd, unsigned int *len, long to_usec)
{
 int rcvlen;
 DWORD time1, time2;
 fd_set fds;
 TIMEVAL tv;

 if(-2 != (long)pd)
  fatal("rawrecv_readip: called with non-rawrecv handle\n");

begin:

 // Note: I could use SO_RCVTIMEO but I don't trust it...
 time1 = GetTickCount();
 FD_ZERO(&fds);
 FD_SET(s, &fds);
 tv.tv_usec = to_usec % 1000000;
 tv.tv_sec = to_usec / 1000000;
 if(0 == select(0, &fds, 0, 0, &tv))
 {
  if(len) *len = 0;
  return 0;
 }

 rcvlen = recv(s, buf, sizeof(buf), 0);
 time2 = GetTickCount() + 10;

 if(rcvlen > 0)
 {
  if(rcvlen >= sizeof(struct ip) && filter(buf, rcvlen))
  {
   if(len) *len = rcvlen;
   return buf;
  }
  else
  {
   to_usec -= 1000 * (time2 - time1);
   if(to_usec < 0)
   {
    if(len) *len = 0;
    return 0;
   }
   goto begin;
  }
 }
 else
 {
  DWORD err = WSAGetLastError();
  if(err != WSAETIMEDOUT && err != WSAEWOULDBLOCK)
   fatal("rawrecv: recv failed (%lu)\n", err);

  if(len) *len = 0;
  return 0;
 }
}


---------------------------------------
Kevin³ Davis

What could possibly go wrong?

kevin.davis () mindless com
----- Original Message -----
From: "Stou Sandalski" <tangui () cell2000 net>
To: "'Paul Ellison'" <philo () mmcable com>; <nmap-dev () insecure org>
Sent: Wednesday, February 27, 2002 1:54 AM
Subject: RE: Win32 port


> Because of some people requesting a XP build of nmap I had compiled it
> with .NET and upped it here a while back:
>
> http://cell2000.net/~users/tangui/nmap-2.54beta30(binary).zip
>
> It works on my laptop with XP but for some reason cores on my primary
> desktop, I will test it on a few other systems soon.
>
> Stou
>
> > -----Original Message-----
> > From: Paul Ellison [mailto:philo () mmcable com]
> > Sent: Tuesday, February 26, 2002 10:31 PM
> > To: nmap-dev () insecure org
> > Subject: Win32 port
> >
> > I realize I asked this same question a little over a week ago but have
> > since
> > crashed and reload and lost misc things like email.  Back now and need
> to
> > ask the same question please!  :)
> >
> > Does anyone happen to have or know where one might get the latest port
> to
> > windows for nmap?  I would be most appreciative of any ideas to go.
> >
> > Thanks!
> >
> > Paul
> >
> >
> >
> > ---
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> >
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>
>
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