[squid-users] regex for normal websites

[robert k Wild]

thanks Eliezer

so it should be

adobe\.com

not

.adobe.\com or

^.*adobe.com

as the ^.* could include

blahadobe.com



On Thu, 28 Jul 2022 at 08:14, <ngtech1ltd at gmail.com> wrote:

> Hey Robert,
>
>
>
> The docs at http://www.squid-cache.org/Doc/config/acl/  states:
>
>
>
>         acl aclname ssl::server_name_regex [-i] \.foo\.com ...
>
>           # regex matches server name obtained from various sources [fast]
>
>
>
> Which and I do not know exactly what it means but it will not work with a
> helper in most cases.
>
> I have found the in the git the next sources:
>
>
> https://github.com/squid-cache/squid/blob/bf95c10aa95bf8e56d9d8d1545cb5a3aafab0d2c/doc/release-notes/release-3.5.sgml#L414
>
>
>
>                 New types ssl::server_name  and ssl::server_name_regex
>
>                    to match server name from various sources (CONNECT
> authority name,
>
>                    TLS SNI domain, or X.509 certificate Subject Name).
>
>
>
> Which means that there is a set of checks which the acl does and not just
> a domain name.
>
> It’s also even possible that the domain name is not know in the CONNECT
> state of the connection.
>
> If I remember correctly there is a possibility for browsers to use the
> same exact connection for multiple domains but
> I have not seen this yet in production.
>
> With Squid once you bump the connection to HTTP/1.x you can make 100% sure
> the features of the Host header request.
>
>
>
> At Servername.cc ie:
>
>
> https://github.com/squid-cache/squid/blob/aee3523a768aff4d1e6c1195c4a401b4ef5688a0/src/acl/ServerName.cc#L81
>
>
>
> There is a specific logic of what is done and what is matched but I am not
> sure what would be used in the case of:
>
> *.adobe.com
>
>
>
> Certificate SAN.
>
>
>
> Specifically This part of the Common Names ie SAN:
>
>
> https://github.com/squid-cache/squid/blob/aee3523a768aff4d1e6c1195c4a401b4ef5688a0/src/acl/ServerName.cc#L105
>
>
>
> which to my understanding points to:
>
>
> https://github.com/squid-cache/squid/blob/d146da3bfe7083381ae7ab38640cbfd0d2542374/src/ssl/support.cc#L195
>
>
>
> doesn’t make any sense to me.( didn’t tried that much to understand)
>
>
>
> If someone might be able to make sense of things in a synchronic fashion
> it would help.
>
> (I do not see any debugs usage there or any helping comment )
>
>
>
> Thanks,
>
> Eliezer
>
>
>
> ----
>
> Eliezer Croitoru
>
> NgTech, Tech Support
>
> Mobile: +972-5-28704261
>
> Email: ngtech1ltd at gmail.com
>
> Web: https://ngtech.co.il/
>
> My-Tube: https://tube.ngtech.co.il/
>
>
>
> *From:* squid-users <squid-users-bounces at lists.squid-cache.org> *On
> Behalf Of *robert k Wild
> *Sent:* Wednesday, 27 July 2022 13:52
> *To:* Squid Users <squid-users at lists.squid-cache.org>
> *Subject:* Re: [squid-users] regex for normal websites
>
>
>
> that's the weird thing, when i try this in  "ssl::server_name_regex"
>
> .adobe.com
>
>
>
> it doesnt work
>
>
>
> you mean escape ie the \ character
>
>
>
>
>
>
>
>
>
>
>
> On Wed, 27 Jul 2022 at 11:05, Matus UHLAR - fantomas <uhlar at fantomas.sk>
> wrote:
>
> On 27.07.22 10:54, robert k Wild wrote:
> >think i got it right but just want to double check with you guys
> >
> >so in my "ssl::server_name" i had
> >.adobe.com
> >
> >that worked but i want to mix normal website and regex websites together
> so
> >i just have one list for all
>
> didn't the above work?  AFAIK it should, IIRC domain matching in squid
> matches "domain.com" if you check for ".domain.com".
>
> >i now have this for "ssl::server_name_regex"
> >^.*adobe.com$
> >
> >it works, so im guessing its right
>
> the dot should be escaped
>
>
> --
> Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
> Warning: I wish NOT to receive e-mail advertising to this address.
> Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
> BSE = Mad Cow Desease ... BSA = Mad Software Producents Desease
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>
>
>
>
> --
>
> Regards,
>
> Robert K Wild.
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>


-- 
Regards,

Robert K Wild.
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