Wireshark-dev: Re: [Wireshark-dev] somewhat misleading error messages in -K option processing
From: Jaap Keuter <[email protected]>
Date: Fri, 19 Feb 2010 21:00:08 +0100
Hi,

Could you create a patch and submit a bugreport for this.

Thanks,
Jaap

On Fri, 19 Feb 2010 10:22:07 -0500, "Jonathan Schilling"
<[email protected]> wrote:
> [Resending, since this has not shown up on the archive]
> 
> In epan/dissectors/packet-kerberos.c, there is this code in a couple of
> places for beginning the -K keytab-file processing:
> 
>         /* should use a file in the wireshark users dir */
>         ret = krb5_kt_resolve(krb5_ctx, filename, &keytab);
>         if(ret){
>                 fprintf(stderr, "KERBEROS ERROR: Could not open keytab
file
> :%s\n",filename);
> 
>                 return;
>         }
> 
>         ret = krb5_kt_start_seq_get(krb5_ctx, keytab, &cursor);
>         if(ret){
>                 fprintf(stderr, "KERBEROS ERROR: Could not read from
keytab
> file :%s\n",filename);
>                 return;
>         }
> 
> The two error messages are a bit misleading.  Per the KRB5 API doc at
>
http://www.ncsa.illinois.edu/UserInfo/Resources/Software/kerberos/krb5api/kr
> b5api4.html and elsewhere, krb5_kt_resolve() does *not* try to open the
> keytab file, but rather just sees if the name is wrongly formatted.  So
the
> first message should be "Could not resolve keytab file ..."  If the
keytab
> filename is wrong, it will be detected in the call to
> krb5_kt_start_seq_get().  So the second message should be something like
> "Could not open or read from keytab file ...".
> 
> Thanks,
> 
> Jonathan Schilling
> 
> 
>
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