[avahi] Avahi and CUPS?

[Daniel S. Haischt]

There's a Bonjour branch, which uses Apple's Bonjour!

Lennart Poettering schrieb:
> On Tue, 25.07.06 09:41, Norman Ramsey (nr at eecs.harvard.edu) wrote:
> 
> 
>> > On Tue, 25.07.06 09:13, Norman Ramsey (nr at eecs.harvard.edu) wrote:
>> > 
>> > > Last week I was traveling, and avahi-browse worked perfectly
>> > > in finding printers.  Unfortunately, I could not persuade CUPS
>> > > of the existence of these printers.  Perhaps  I should be asking
>> > > on a CUPS list, but is there some trick to it?  (I thought other
>> > > Avahi users might know.)
>> > > 
>> > > The parts of my /etc/cups/cupsd.conf that I believe to be relevant are:
>> > > 
>> > > # Show shared printers on the local network.
>> > > Browsing On
>> > > BrowseOrder allow,deny
>> > > BrowseAllow from @LOCAL
>> > > BrowseProtocols dnssd cups
>> > > BrowseRemoteProtocols dnssd cups
>> > > BrowseLocalProtocols dnssd cups
>> > 
>> > AFAIK CUPS upstream doesn't support browsing for printers with either
>> > Bonjour or Avahi.
>>
>>Hmm.  The documentation clearly lists 'dnssd' as an option, but maybe
>>Avahi is considered 'mdnsd'?  In any case, thanks for the quick
>>answer.
> 
> 
> I grepped through the sources of cups 1.2.1 now:
> 
> <snip>
> [lennart at ecstasy] ~/tmp/cupsys-1.2.1$ egrep '(dns.?sd|mdns|bonjour|rendezvous|avahi)' -i -R .
> ./doc/help/ref-cupsd-conf.html:BrowseLocalProtocols dns-sd
> ./doc/help/ref-cupsd-conf.html:BrowseLocalProtocols cups dns-sd
> ./doc/help/ref-cupsd-conf.html:BrowseProtocols dns-sd
> ./doc/help/ref-cupsd-conf.html:BrowseProtocols cups dns-sd
> ./doc/help/ref-cupsd-conf.html:BrowseRemoteProtocols dns-sd
> ./doc/help/ref-cupsd-conf.html:BrowseRemoteProtocols cups dns-sd
> ./scheduler/main.c:     (!Browsing || !(BrowseLocalProtocols & BROWSE_DNSSD) ||
> ./scheduler/conf.c:    else if (!strcasecmp(valstart, "dnssd") || !strcasecmp(valstart, "bonjour"))
> ./scheduler/conf.c:      protocols |= BROWSE_DNSSD;
> ./scheduler/sysman.c:    /* TODO: Possibly update when MDNS support is added? */
> ./scheduler/sysman.c:   * TODO: This might need updating for MDNS.
> ./scheduler/dirsvc.h:#define BROWSE_DNSSD       8               /* DNS Service Discovery aka Bonjour */
> ./man/cupsd.conf.man.in:BrowseProtocols [All] [CUPS] [DNSSD] [LDAP] [SLP]
> ./man/cupsd.conf.man.in:BrowseLocalProtocols [All] [CUPS] [DNSSD] [LDAP] [SLP]
> ./man/cupsd.conf.man.in:BrowseRemoteProtocols [All] [CUPS] [DNSSD] [LDAP] [SLP]
> [lennart at ecstasy] ~/tmp/cupsys-1.2.1$
> </snip>
> 
> What can we read from this? CUPS parses the config option "dnssd" and
> it is even documented. But there is no actual implementation of it in the
> sources! With neither the Bonjour not the Avahi API!
> 
> I wonder what they have been smoking when they did this. Looks a
> little bit unprofessional to me...
> 
> Lennart
> 


-- 
Mit freundlichen Gruessen / With kind regards
DAn.I.El S. Haischt

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