Re: pgsql: Set libpq sslcompression to off by default

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От Daniel Gustafsson
Тема Re: pgsql: Set libpq sslcompression to off by default
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Msg-id A99641B5-8198-41DD-A240-FCD5EFE5B497@yesql.se
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Ответ на Re: pgsql: Set libpq sslcompression to off by default  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: pgsql: Set libpq sslcompression to off by default  (Peter Eisentraut <peter.eisentraut@2ndquadrant.com>)
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> On 20 Mar 2018, at 05:15, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> Peter Eisentraut <peter.eisentraut@2ndquadrant.com> writes:
>> On 3/17/18 15:12, Daniel Gustafsson wrote:
>>> On 17 Mar 2018, at 17:47, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>>>> Buildfarm reports that SSL_clear_options isn't available everywhere.
>
>>> Per some reading of the documentation and various patchers it seems
>>> SSL_clear_options() was introduced in 0.9.8m and SSL_OP_NO_COMPRESSION in
>>> 1.0.0.
>
>> It seems the failure is limited to an old NetBSD version.  They might
>> have patched their libssl locally somehow.  Is it worth supporting this?
>
> Dunno, but the other side of the coin is that the goals of this patch
> don't seem like a sufficient reason to break backwards compatibility
> with any platform.

If we test for SSL_clear_options(), and use the sk_SSL_COMP_zero() where not
available, we should be able to keep backwards compatibility with older OpenSSL
revisions even if the distros have patched them AFAICT.  Unless you’re already
working on it I can take a stab at it.

cheers ./daniel

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