[Solved - of sorts] CUPS printing problems

[Jeff Vian]

On Thu, 2006-04-20 at 08:17 -0500, Jeff Vian wrote:
> On Thu, 2006-04-20 at 08:03 +0100, Paul Howarth wrote:
> > On Wed, 2006-04-19 at 20:52 -0500, Jeff Vian wrote:
> > > I have recently added an FC5 system to my home network.
> > > I already have an FC4 server that has all my printers connected and I
> > > want to not have to move them.  I want to have all machines on my local
> > > LAN able to print to this server.
> > > Note: I am not running samba since I have no windows systems to deal
> > > with.
> > > 
> > > Printing from the local machine works, so it seems this is related to
> > > enabling 
> > > 
> > > I have gone to the CUPS documentation and it seems that I should be able
> > > to add a simple "Listen IP:port" in the cupsd.conf file and it should
> > > work.
> > > Whenever I try adding this option in the conf file then restarting cups
> > > it fails with "child exited with error 98!", as if the syntax was wrong.
> > > I cannot see the error, and what I have is like the example given in
> > > the .conf file but it just fails.
> > > 
> > > Without the Listen option, the access_log shows me that the printing
> > > attempt from the remote system fails with a 403 error.
> > > 
> > > Any pointers to the obviously simple fix for my blind eyes? 
> > 
> > Make sure there's no uncommented "Port" option in the file.
> > 
> > What I have on my printer server is:
> > 
> > Browsing On
> > BrowseProtocols cups
> > BrowseOrder Deny,Allow
> > BrowseAllow from @LOCAL
> > BrowseAddress 255.255.255.255
> > Listen *:631
> > 
> > The other linux boxes on my network auto-discover my printer with this
> > config on the server.
> > 
> > Paul.
> > 
> I see this at the end of my cupsd.conf file
> 
> <Location /printers/stylus-photo-r300--1>
> Order Deny,Allow
> Deny From All
> Allow From 127.0.0.1
> AuthType None
> </Location>

In each of the location stanzas of the type above I added another 
"Allow From x.x.x.x" line with the IP of the remote workstation.
Now when I restarted cupsd I can print from the remote workstation.

This is at best a work-around and I need to find out why it cannot be
configured this way using the cups interface (or file a bug because it
cannot).

> Browsing On
> BrowseProtocols cups
> BrowseOrder Deny,Allow
> BrowseAllow from @LOCAL
> BrowseAddress 255.255.255.255
> Listen *:631
> 
> Similar <Location> stanzas for *some* of the printers I have defined,
> but not all.
> It seems it has all the lines you suggested Paul, but the location
> blocks likely prevent the connection.
> 
> My questions now become this:
> 1. Why does it only show some of the defined printers?
> All were defined using the cups interface. The ones listed in cupsd.conf
> and those not listed there all work from the local print server.
> 
> 2.  This area is clearly marked with a line that says 
> # Lines below are automatically generated - DO NOT EDIT
> What happens if I do edit that part of the file, then maybe change or
> add printers after editing it?
> 
> 
> I would think that the use of the cups interface to define printers
> would be standard, but it was not.  I also cannot find in any of
> the /admin pages a way to turn on sharing so it seems this would have to
> be edited in order to enable sharing.
> 
> I guess the admin of cups is a bit obscure on how to do things other
> than printing on the localhost.
> 
> I will try a couple of other things and see what the result is.
> 
> Thanks for the pointers.
> 
> Jeff
>