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freetds - Re: [freetds] Patch For sspi.c To Use Windows Authentication

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  • From: ken AT metaskills.net
  • To: FreeTDS Development Group <freetds AT lists.ibiblio.org>
  • Subject: Re: [freetds] Patch For sspi.c To Use Windows Authentication
  • Date: Tue, 30 Oct 2012 08:24:32 -0400


Is this something you want me to forward on to the person that gave me this
patch before you would apply it? I can get them to join the list if needed.

- Ken

On Oct 30, 2012, at 4:08 AM, Frediano Ziglio <freddy77 AT gmail.com> wrote:

> Yes, I think your connection is using Kerberos. We have similar code
> even for gssapi (that provide Kerberos for the Unix world). It must be
> return tds_flush_packet(tds), not return status. Also you miss a
> CompleteAuthToken call on SEC_I_COMPLETE_AND_CONTINUE.
>
> Frediano
>
>
> 2012/10/29 <ken AT metaskills.net>:
>>
>> A user on my TinyTDS/SQLServer list reported this bug with FreeTDS. They
>> could not get Windows authentication to work and had to make the following
>> change to sspi.c
>>
>>> free(auth_buf);
>>> // code added start
>>> if (status == SEC_I_COMPLETE_AND_CONTINUE || status ==
>>> SEC_I_CONTINUE_NEEDED) {
>>> if (out_buf.cbBuffer > 0)
>>> {
>>> tds_put_n(tds, auth->tds_auth.packet, out_buf.cbBuffer);
>>> tds_flush_packet(tds);
>>> return status;
>>> }
>>> }
>>> // code added end
>>> if (status != SEC_E_OK)
>>> return TDS_FAIL;
>>
>> After that change, they got Windows authentication working and saw the
>> following FreeTDS debug info.
>>
>>> AUTH
>>> ENVCHANGE
>>> INFO
>>> ENVCHANGE
>>> ENVCHANGE
>>> INFO
>>> LOGINACK
>>> ENVCHANGE
>>> DONE
>>> Finally, there is the LOGINACK and DONE tokens : )
>>
>> Opinions on doing this patch?
>>
>>
>> - Ken
>>
>>
>>
>>
>> _______________________________________________
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>> FreeTDS AT lists.ibiblio.org
>> http://lists.ibiblio.org/mailman/listinfo/freetds
> _______________________________________________
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> FreeTDS AT lists.ibiblio.org
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