[cups] Allowing anyone logged onto the server to print without a password

[Jörg Thümmler]

Am 17.08.22 um 22:21 schrieb Johnnie W Adams:
> Hi,
> 
>       Adding the user to the lp group had no effect.
> 
> ~]$ /usr/bin/lpr -Pbiol11 foo
> 
> Password for **** on localhost?
> 
> 
> 
>       I can print but that user can't:
> 
> 
> ~]$ lpr -P biol11 foo
> 
> ~]$ echo $?
> 
> 0
> 
> 
> Thanks,
> 
> 
>       John A
> 
> On Wed, Aug 17, 2022 at 6:49 AM Jörg Thümmler <listen at vordruckleitverlag.de>
> wrote:
> 
>> Am 10.08.22 um 14:40 schrieb Johnnie W Adams:
>>> Running from the command line only, using things like lpr.
>>>
>>> On Wed, Aug 10, 2022 at 2:06 AM Mark Dm <markosjal at gmail.com> wrote:
>>>
>>>> what clients?
>>>>
>>>> On Tue, Aug 9, 2022 at 10:10 AM Johnnie W Adams <jxadams at ualr.edu>
>> wrote:
>>>>
>>>>> Hi, folks,
>>>>>
>>>>>        That's what I'd like to do. How would I do that?
>>>>>
>>>>> Thanks,
>>>>>
>>>>>        John A
>>>>>
>>>>> --
>>>>> John Adams
>>>>> Senior Linux/Middleware Administrator  | Information Technology
>> Services
>>>>> +1-501-916-3010 | jxadams at ualr.edu | http://ualr.edu/itservices
>>>>> *UA Little Rock*
>>>>>
>>>>> Reminder:  IT Services will never ask for your password over the phone
>> or
>>>>> in an email. Always be suspicious of requests for personal information
>>>> that
>>>>> come via email, even from known contacts.  For more information or to
>>>>> report suspicious email, visit IT Security
>>>>> <http://ualr.edu/itservices/security/>.
>>>>> _______________________________________________
>>>>> cups mailing list
>>>>> cups at cups.org
>>>>> https://lists.cups.org/mailman/listinfo/cups
>>>>>
>>>> _______________________________________________
>>>> cups mailing list
>>>> cups at cups.org
>>>> https://lists.cups.org/mailman/listinfo/cups
>>>>
>>>
>>>
>> Hi,
>>
>> usually that's the default setting after a fresh cups installation...?
>>
>> Try to ad your users to the "lp" user group.
>>
>> Do you get an error message trying
>>
>>          lpr -P<yourprinter> <somefile>
>>
>> e.g.    lpr -PBrother233 /etc/hosts
>>
>> ???
>>
>> Use the web interface at http://localhost:631 to see if there are jobs?
>>
>> --
>> cu
>>
>> jth
>> _______________________________________________
>> cups mailing list
>> cups at cups.org
>> https://lists.cups.org/mailman/listinfo/cups
>>
> 
> 

Hi,

asking for passwd seems to be a new "feature" of cups (i would call it a 
bug)

You have to modify your printers.conf for this printer, there should be 
lines beginning like

AuthenticationRequired
AllowUser

for this printer entry. Comment them out:

shut down cups    #systemctl stop cups

edit the file /etc/cups/printers.conf comment the lines out

restart cups	#systemctl start cups

...
there should be a more elegant and compatible way of doing this and i 
believe there is a general switch in /etc/cups/cupsd.conf or somewhere 
else to change the security level to prevent these entries, but i didn't 
find it.

-- 
cu

jth