From owner-freebsd-ports  Fri Oct 16 09:48:13 1998
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From: woju@freebsd.ntu.edu.tw
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Date: 16 Oct 1998 16:56:49 -0000
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Reply-To: woju@freebsd.ntu.edu.tw
To: freebsd-ports@FreeBSD.ORG
Subject: [help] determin local ouput ip
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Hi:

A problem is encounted while porting "queso". (ports/8305)
ftp://freebsd.ntu.edu.tw/freebsd/woju/ports/queso.tgz

How to determin local ip without establishing a connection? My ports now
use the method like /usr/share/examples/find_interface/. After reporting
this port to savage(queso's author), he said "queso determines remote
OS without establishing connections".

In file queso-980922/tcpip.c --
getlocalip (unsigned long dest)
{
  static struct in_addr ina;
#ifdef LINUX  /*---------------------------------------------- LINUX --*/
  int i;

  for (i = 0; i < numroutes; i++)
    {
      if ((dest & routes[i].naddr) == (unsigned long) routes[i].addr.s_addr)
        {
          return (routes[i].iface->addr);
        }
    }

#else /* !LINUX ---------------------------------------------- OTHER --*/

My ports --
#elif defined(__FreeBSD__) /*------------------------------- FreeBSD --*/
/*
        Ref: /usr/share/examples/find_interface/
*/

If anybody know some other way to determine output IP, please let me know.
Thanks.

- woju ( FreeBSD Chinese BIG5 Document/FAQ http://bsd.wj.ml.org )

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