Re: Fw: Problems with fnct pcap_lookupdev()

[César Cárdenas <ccardena () itesm mx>]

Many Thanks GV:

It works now!!!
I have another question but I'll pose it to another message because is different,

Best regards,
César

ps by the way, where I can see the list messages...I did not found in the
www.tcpdump.org page.

> -- Mensaje Original --
> From: "Gisle Vanem" <giva () bgnett no>
> To: <ccardena () itesm mx>
> Subject: Fw: [tcpdump-workers] Problems with fnct pcap_lookupdev()
> Date: Wed, 28 Apr 2004 12:16:13 +0200
----- Original Message ----- 
From: "Gisle Vanem" <giva () bgnett no>
To: <tcpdump-workers () lists sandelman ca>
Sent: Wednesday, April 28, 2004 11:53 AM
Subject: Re: [tcpdump-workers] Problems with fnct pcap_lookupdev()


> "César Cárdenas" <ccard
> na () itesm mx> said:
>
> > When I run the following simple code:
> >
> > #include <stdio.h>
> > #include <pcap.h>
> >
> > int main()
> >     {
> >     char           *dev;                    /*The device to sniff on*/
> >     char           err
> uf[PCAP_ERRBUF_SIZE];/*Error string*/
> >     dev = pcap_lookupdev (errbuf);
> >     printf("Device: %s\n%s\n", dev, errbuf);
> >     return (0);
> >     }
> >
> > The results are (in a DOS window):
> >
> > Device: \
> > á=L
> >
> > I a
> using Dev-cpp v 4.9.8.0. Does any body knows where is the problem?
>
> It's because the devicename is in Unicode. Use a test like
>   if (dev[1] == 0)  /* unicode */
>         printf("Device: %S\n", dev);
>   else printf("Device: %s\n", dev);

> > errbuf isn't filled if pcap_lokupdev() succeedes. So don't use it.
>
> > It suppose to give results like:
> >
> > eth0
> > fddi
>
> Not on Windows; there you'll get the long unfriendly names
> you quoted.
>
> --gv





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