[cups] iOS will No longer print "...do not have permissions..."

[Mark Dm]

I wanted to update this with the fix. Not sure what part of this fixed it.

I went to my Pi's IP Address as I always do:
https://192.168.0.50:631
And it worked fine
Now from a Mac (which I almost never use for anything other  than testing)
At some point, I  saw a link that said "open printer admin page", or
something like that, and clicked it What I got was
https://raspberrypi.local:631 /Dell_1355CN which displayed "forbidden"
where I should have seen the CUPS admin page. Then it hit me that the Apple
Crap always uses the hostname from Bonjour. "raspberrypi" is the hostname
of "192.168.0.50". The IP worked but the "raspberrypi.local", hostname that
the Mac was trying to access did not

So after some googling I read that I should change some cups settings
specifically using "Allow all" instead of "Allow @local " (I think this is
what it was) in the conf under "Location", "Location/admin" and
Location/admin/conf then restart the CUPS server , as I did then run
cupsctl-remote-admin

After doing several other things on the Mac and updating some stuff and a
restart to the Raspberry Pi, I got back to checking if If could access the
Pi via the hostname and there it was. I could now get to the admin page via
the hostname again, like I used to be able to.

The best part is I an also again able to print from iOS

So I guess perhaps  on some versions of CUPS it does not treat the hostname
the same as the IP and will not allow traffic from an IP to it's hostname??
Odd.

Mark



On Sat, Feb 26, 2022 at 5:40 AM Mark Dm <markosjal at gmail.com> wrote:

> BTW I have now confirmed the same problem on multiple versions of iOS
>
> On Sat, Feb 26, 2022 at 5:39 AM Mark Dm <markosjal at gmail.com> wrote:
>
>> My raspberry pi already has, and has had a root password for a long time.
>>
>> On Fri, Feb 25, 2022 at 7:38 PM Ulisses Datasystem <
>> ulisses at datasystem.net.br> wrote:
>>
>>> My Python application, prints to a thermal printer.
>>> I managed to get around this by setting the root password, in RaspbarryPi
>>>
>>> sudo -i
>>> Enter password user
>>> sudo passwd
>>> Create password root
>>> Exit
>>>
>>> Hope this helps
>>>
>>> Ulisses de Aguiar Viana
>>> Datasystem | Gerente Técnico
>>> (11) 96486-2689
>>>
>>> Em qui, 24 de fev de 2022 06:58, Mark Dm <markosjal at gmail.com> escreveu:
>>>
>>> > I have been running CUPS on Raspberry Pi for some time . I have used
>>> it for
>>> > Windows machines , Android, and iOS devices when they come to visit or
>>> when
>>> > I need to use it that way. I never had a problem, it always "just
>>> worked".
>>> >
>>> > I took the old Dell 1355 MFP off line  for a month or so. Then I re-
>>> > installed it where It was but this time using wired network connection
>>> > (which I have used before with the same configuration). I am certain
>>> that
>>> > iOS  (iPad) updated during this time as well as some probable updates
>>> to
>>> > the Pi's Raspbian OS.
>>> >
>>> > I have re-installed the printer several times now and get the same
>>> annoying
>>> > message on iOS devices about not having permissions.
>>> >
>>> > I can print from Android 10 using default print service  or Mopria for
>>> > Android
>>> >
>>> > Cups Version 2.2.1
>>> >
>>> > Full Message on pop-up window on iPad:
>>> > "DELL Dell 1355CN Color MFP @raspberrrypi
>>> > You do not have permission to use this printer"
>>> >
>>> > This is an old version of Raspbian
>>> > Distributor ID: Raspbian
>>> > Description:    Raspbian GNU/Linux 9.13 (stretch)
>>> > Release:        9.13
>>> > Codename:       stretchDistributor ID: Raspbian
>>> > Description:    Raspbian GNU/Linux 9.13 (stretch)
>>> > Release:        9.13
>>> > Codename:       stretch
>>> >
>>> > Thanks for any help in advance
>>> >
>>> > Mark
>>> > _______________________________________________
>>> > 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
>>>
>>