How to connect cl+ssl with host ca verification?

Tim Hawes trhawes at gmail.com
Thu Mar 24 14:54:14 UTC 2022


It would be nice to be able to specify the root CA explicitly.

On Thu, Mar 24, 2022 at 10:53 AM Tim Hawes <trhawes at gmail.com> wrote:

> I haven't looked at the code, but apparently, it checks if the rootCA is
> registered in the system.
> This works if I have added the rootCA system-wide
> (let ((cl-postgres:*ssl-certificate-file* "/some/path/to/cert.crt")
>        (cl-postgres:*ssl-key-file* "/some/path/to/a-key.key"))
>    (postmodern:with-connection
>        '("dbname" "dbuser" "password" "some-remote-server.lan" :port 5432
>          :use-ssl :full)
>      (postmodern:query (:select '* :from 'table))))
>
>
> On Tue, Mar 22, 2022 at 8:50 PM Sabra Crolleton <sabra.crolleton at gmail.com>
> wrote:
>
>> Postmodern uses cl+ssl and I do not see cl+ssl using a root ca. Maybe I
>> am missing something in that library?
>>
>> On Mon, Mar 21, 2022 at 9:37 PM Tim Hawes <trhawes at gmail.com> wrote:
>>
>>> Sorry Sabra, I didn't intend to reply to you directly.
>>>
>>> ---------- Forwarded message ---------
>>> From: Tim Hawes <trhawes at gmail.com>
>>> Date: Mon, Mar 21, 2022 at 9:35 PM
>>> Subject: Re: How to connect cl+ssl with host ca verification?
>>> To: Sabra Crolleton <sabra.crolleton at gmail.com>
>>>
>>>
>>> That works, but it looks like the root ca has to be added to the system.
>>> If using psql I could specify where all the certs I want to use to connect
>>> with like so:
>>>
>>> $>psql "port=5432 host=localhost user=postgres sslcert=./test/client.crt
>>> sslkey=./test/client.key sslrootcert=./test/server.crt sslmode=verify-full"
>>> Is there an equivalent in Postmodern?
>>>
>>> On Mon, Mar 21, 2022 at 8:36 PM Sabra Crolleton <
>>> sabra.crolleton at gmail.com> wrote:
>>>
>>>> The cl-postgres (open-database ...) function has :use-ssl as a key
>>>> parameter where the parameter values:
>>>>
>>>>    - :try means if the server supports it
>>>>    - :require means use provided ssl certificate with no verification
>>>>    - :yes means verify that the server cert is issued by a trusted CA,
>>>>    but does not verify the server hostname
>>>>    - :full means expect a CA-signed cert for the supplied hostname and
>>>>    verify the server hostname
>>>>
>>>> This is mirrored in the postmodern (connect ...) function.
>>>>
>>>> If I understand your question correctly, you want to use :full as the
>>>> parameter passed to :use-ssl. E.g.
>>>>
>>>>> (connect "test_db" "test-user" "test-password" "192.168.5.223"
>>>>>          :port 5434 :pooled-p t :use-ssl :full)
>>>>>
>>>>> But maybe I am not understanding your question correctly.
>>>>
>>>> Sabra
>>>>
>>>> On Mon, Mar 21, 2022 at 7:50 PM Tim Hawes <trhawes at gmail.com> wrote:
>>>>
>>>>> I am not finding any helpful information in how to connect to
>>>>> PostgreSQL using client key/client cert and a root ca for verifying the
>>>>> host with Postmodern. Can someone send me an example?
>>>>>
>>>>
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