[net-dns-users] handling unsupported record types

[Dick Franks]

Please can you let us know platform and perl revision info.

Others have reported issues with eval{...} and threads

Dick Franks

--


On 31 May 2013 22:15, Chris Buxton <clists at buxtonfamily.us> wrote:

> The problem occurred with Net::DNS 0.72. I was not using
> Net::DNS::ZoneFile to read the zone from disk.
>
> After reading these comments, I tried the script locally, on my
> development workstation, and it worked fine. On the client's workstation,
> it failed, despite having the same version of Net::DNS. I have no
> explanation.
>
> Thanks for the guidance.
> Chris Buxton
>
> On May 22, 2013, at 2:30 PM, Dick Franks <rwfranks at acm.org> wrote:
>
> Chris,
>
> Revision of Net::DNS?
>
> I do not understand why a zone transfer would fail in the way you describe.
>
> Are you using Net::DNS::ZoneFile to read your zone data from disk?
>
> There should be no need to hack RR.pm.
> Your script needs to handle the exception condition.
>
>     my $zone = new Net::DNS::ZoneFile( $filename );
>
>     loop { # through RRs in zone file
>
>         my $rr = eval { $zone->read; };        # which knows about
> multi-line RRs
>         if ( $@ ) {
>             warn $@;
>             next;
>         }
>
>         last unless $rr;
>
>         # process RR
>
>     }
>
>
> Regards
>
> Dick Franks
>
> --
>
>
> On 22 May 2013 20:30, Chris Buxton <clists at buxtonfamily.us> wrote:
>
>> I have a script that reads zones from files on disk and also via zone
>> transfer. Currently, when reading in data, if the script encounters a
>> record for which Net::DNS does not implement a record type class, the
>> script dies. The immediate case looks like this:
>>
>> WKS not implemented at
>> /usr/lib/perl5/site_perl/5.14/i686-cygwin-threads-64int/Net/DNS/RR.pm line
>> 630.
>> new Net:NS::RR( ... ) at ./dnsdiff.pl line 300
>>
>> Short of hacking Net::DNS::RR, how can I handle this without dying and
>> without losing any records coming after the unknown record type in a zone
>> transfer?
>>
>> Regards,
>> Chris Buxton
>> _______________________________________________
>> net-dns-users mailing list
>> net-dns-users at nlnetlabs.nl
>> https://www.nlnetlabs.nl/mailman/listinfo/net-dns-users
>>
>
> _______________________________________________
> net-dns-users mailing list
> net-dns-users at nlnetlabs.nl
> https://www.nlnetlabs.nl/mailman/listinfo/net-dns-users
>
>
>
> _______________________________________________
> net-dns-users mailing list
> net-dns-users at nlnetlabs.nl
> https://www.nlnetlabs.nl/mailman/listinfo/net-dns-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.nlnetlabs.nl/pipermail/net-dns-users/attachments/20130531/7db24dd3/attachment.htm>