From karel.slany at nic.cz  Tue Sep 10 15:18:08 2013
From: karel.slany at nic.cz (Karel Slany)
Date: Tue, 10 Sep 2013 17:18:08 +0200
Subject: [ldns-users] Python rdf.data()
In-Reply-To: <521E42BD.1020809@nottheoilrig.com>
References: <521549A6.7030809@nottheoilrig.com>
 <5215D255.4090009@nlnetlabs.nl> <52160495.7010009@nic.cz>
 <521E42BD.1020809@nottheoilrig.com>
Message-ID: <522F3830.9050102@nic.cz>

Hello Jack,

I apologise for the delay. I've added the functionality you wanted.
Currently it is only available in the git repository
(git://git.nlnetlabs.nl/ldns/).

The new rdf method is called data_as_bytearray() which returns a Python
bytearray containing a copy of the rdf data.

A simple usage example can be found in the attachment.

Best regards,
K.

Am 28.08.2013 20:34, schrieb Jack Bates:
> Thank you Karel, I want to access certificate association data from a
> TLSA RR. From C I would use ldns_rdf_data() and ldns_rdf_size(), is that
> right? From Python, how do you use the return value from rdf.data()?
> 
> The RDF is type HEX, so str(rdf) returns hex digits. I can convert them
> back to bytes, but rdf.data() and rdf.size() seemed like the more direct
> way to get the bytes?
> 
> On 22/08/13 05:31 AM, Karel Slany wrote:
>> Greetings,
>>
>> Python's ldns_rdf.data() creates a thin wrapper around the ldns C
>> function ldns_rdf_data(). Function ldns_rdf_data() returns a pointer to
>> an internal data field of the manipulated rdf.
>>
>> Actually, I don't know the actual reason why you are trying to access
>> this low level structures. Manipulating them from Python can be tricky
>> as you can easily end up with corrupted memory.
>>
>> In order to meet your desire I can add a new method ldns_rdf.data_str()
>> which would return a Python string containing copy of the rdf data
>> field. However, in Python3 this would be error-prone, because Python3
>> uses unicode strings. At the moment I cannot guess, whether the approach
>> would be reliabe in Python3.
>>
>> Please give more information about the reason why you want to use
>> ldns_rdf.data(). Perhaps we could think of a more convenient solution.
>>
>> K.
>>
>> Am 22.08.2013 10:56, schrieb Willem Toorop:
>>> Hi Jack,
>>>
>>> I suspect raw access is not supported by pyldns.
>>> Karel, could shed some light on this?
>>>
>>> -- Willem
>>>
>>> Op 22-08-13 01:13, Jack Bates schreef:
>>>> I am working with the Python wrapper for ldns.
>>>>
>>>> rdf.data() returns something like
>>>> <Swig Object of type 'uint8_t *' at 0xb742f938>
>>>>
>>>> and rdf.size() returns the number of bytes. How do I read the bytes?
>>>>
>>>> Thanks!
>>>> _______________________________________________
>>>> ldns-users mailing list
>>>> ldns-users at open.nlnetlabs.nl
>>>> http://open.nlnetlabs.nl/mailman/listinfo/ldns-users
>>>
>>> _______________________________________________
>>> ldns-users mailing list
>>> ldns-users at open.nlnetlabs.nl
>>> http://open.nlnetlabs.nl/mailman/listinfo/ldns-users
>>>

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From rafiee at hpi.uni-potsdam.de  Thu Sep 12 13:35:04 2013
From: rafiee at hpi.uni-potsdam.de (Rafiee, Hosnieh)
Date: Thu, 12 Sep 2013 13:35:04 +0000
Subject: [ldns-users] centos 6.4  final
Message-ID: <8EBBE4774B42FC45BA1143BE7F3F5A0F0E870D@MXMA2012.hpi.uni-potsdam.de>

Hello,

I encountered a problem during the installation of ldns on Centos 64 bits.  I downloaded the latest version from repository and used the following command
Autoreconfig -install
./configure
Make
When I use make I receive
Make**** Buffer.lo  error 63

Anybody knows how to solve this problem?

Thanks,
Best Regards,
Hosnieh

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From paul at nohats.ca  Thu Sep 12 13:51:49 2013
From: paul at nohats.ca (Paul Wouters)
Date: Thu, 12 Sep 2013 09:51:49 -0400 (EDT)
Subject: [ldns-users] centos 6.4  final
In-Reply-To: <8EBBE4774B42FC45BA1143BE7F3F5A0F0E870D@MXMA2012.hpi.uni-potsdam.de>
References: <8EBBE4774B42FC45BA1143BE7F3F5A0F0E870D@MXMA2012.hpi.uni-potsdam.de>
Message-ID: <alpine.LFD.2.10.1309120950570.9471@bofh.nohats.ca>

On Thu, 12 Sep 2013, Rafiee, Hosnieh wrote:

> I encountered a problem during the installation of ldns on Centos 64 bits. ?I downloaded the latest version from repository and used the
> following command
> 
> Autoreconfig ?install
> 
> ./configure
> 
> Make
> 
> When I use make I receive
> 
> Make**** Buffer.lo ?error 63

>From the spec file of EPEL6:

%prep
%setup -q 
# To built svn snapshots
# rm config.guess config.sub ltmain.sh
# aclocal
# libtoolize -c --install
# autoreconf --install

Just activate those lines.

Paul