[Pkg-cups-devel] Bug#530027: ServerAlias * looks to solve problem

Tue Feb 8 14:04:02 UTC 2011

Package: cups
Version: 1.4.5-2
Severity: normal

Hello,

today i upgraded our print server, and printing stopped working.

In logs I had entries like:

E [08/Feb/2011:13:35:02 +0100] Request from "10.0.1.244" using invalid Host:
field "printserver.example.com"
E [08/Feb/2011:14:09:16 +0100] Request from "10.0.3.24" using invalid Host:
field "romeo-internal.example.com"
E [08/Feb/2011:14:09:20 +0100] Request from "10.0.2.5" using invalid Host:
field "printserver.example.com"
E [08/Feb/2011:14:12:00 +0100] Request from "10.0.2.15" using invalid Host:
field "romeo.example.com"
E [08/Feb/2011:14:12:22 +0100] Request from "10.0.2.5" using invalid Host:
field "printserver"

which are all essentially valid names, as they points to the same machine,
or are CNAME aliases in DNS to the same IP actually.
Also libc domain/search goes into account here (printserver actually
resolves as printserver.example.com).

In my case adding

   ServerAlias *

to cupsd.conf solved problem. But indeed before this, after i upgraded
print server, all clients couldn't print or even lists printers.

Adding only

HostNameLookups on

resulted still in error

E [08/Feb/2011:14:13:57 +0100] Request from "tytus.local" using invalid Host:
field "printserver.example.com"

(as expected, because this options doesn't have nothing in common with Host
field AFAIK)

What is strange is that tytus.local should be tytus.example.com, as it normally
reversely resolved:

# getent hosts 10.0.2.5
10.0.2.5        tytus.example.com
#

I blame Avahi, but do not have proof yet.

So how about adding small not in the release notes chapter 5?
And of course into README.Debian.gz

Regards,
Witek

-- System Information:
Debian Release: 6.0
  APT prefers stable
  APT policy: (500, 'stable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/1 CPU core)
Locale: LANG=pl_PL.utf8, LC_CTYPE=pl_PL.utf8 (charmap=UTF-8) (ignored: LC_ALL set to pl_PL.utf8)
Shell: /bin/sh linked to /bin/dash

Versions of packages cups depends on:
ii  adduser                 3.112+nmu2       add and remove users and groups
ii  bc                      1.06.95-2        The GNU bc arbitrary precision cal
ii  cups-client             1.4.5-2          Common UNIX Printing System(tm) - 
ii  cups-common             1.4.5-2          Common UNIX Printing System(tm) - 
ii  cups-ppdc               1.4.5-2          Common UNIX Printing System(tm) - 
ii  debconf [debconf-2.0]   1.5.38           Debian configuration management sy
ii  ghostscript             8.71~dfsg2-10    The GPL Ghostscript PostScript/PDF
ii  libavahi-client3        0.6.27-3         Avahi client library
ii  libavahi-common3        0.6.27-3         Avahi common library
ii  libc6                   2.11.2-11        Embedded GNU C Library: Shared lib
ii  libcups2                1.4.5-2          Common UNIX Printing System(tm) - 
ii  libcupscgi1             1.4.5-2          Common UNIX Printing System(tm) - 
ii  libcupsdriver1          1.4.5-2          Common UNIX Printing System(tm) - 
ii  libcupsimage2           1.4.5-2          Common UNIX Printing System(tm) - 
ii  libcupsmime1            1.4.5-2          Common UNIX Printing System(tm) - 
ii  libcupsppdc1            1.4.5-2          Common UNIX Printing System(tm) - 
ii  libdbus-1-3             1.2.24-4         simple interprocess messaging syst
ii  libgcc1                 1:4.5.1-5        GCC support library
ii  libgnutls26             2.8.6-1          the GNU TLS library - runtime libr
ii  libgssapi-krb5-2        1.8.3+dfsg-4     MIT Kerberos runtime libraries - k
ii  libijs-0.35             0.35-7           IJS raster image transport protoco
ii  libkrb5-3               1.8.3+dfsg-4     MIT Kerberos runtime libraries
ii  libldap-2.4-2           2.4.23-7         OpenLDAP libraries
ii  libpam0g                1.1.1-6.1        Pluggable Authentication Modules l
ii  libpaper1               1.1.24           library for handling paper charact
ii  libpoppler5             0.12.4-1.2       PDF rendering library
ii  libslp1                 1.2.1-7.8        OpenSLP libraries
ii  libstdc++6              4.5.1-5          The GNU Standard C++ Library v3
ii  libusb-0.1-4            2:0.1.12-16      userspace USB programming library
ii  lsb-base                3.2-27           Linux Standard Base 3.2 init scrip
ii  poppler-utils           0.12.4-1.2       PDF utilitites (based on libpopple
ii  procps                  1:3.2.8-10       /proc file system utilities
ii  ssl-cert                1.0.28           simple debconf wrapper for OpenSSL
ii  ttf-freefont            20090104-7       Freefont Serif, Sans and Mono True
ii  zlib1g                  1:1.2.3.4.dfsg-3 compression library - runtime

Versions of packages cups recommends:
ii  avahi-daemon               0.6.27-3      Avahi mDNS/DNS-SD daemon
ii  cups-driver-gutenprint     5.2.6-1       printer drivers for CUPS
ii  foomatic-filters           4.0.5-6       OpenPrinting printer support - fil
ii  ghostscript-cups           8.71~dfsg2-10 The GPL Ghostscript PostScript/PDF

Versions of packages cups suggests:
ii  cups-bsd                      1.4.5-2    Common UNIX Printing System(tm) - 
pn  cups-pdf                      <none>     (no description available)
ii  foomatic-db                   20100804-1 OpenPrinting printer support - dat
ii  hplip                         3.10.6-2   HP Linux Printing and Imaging Syst
pn  smbclient                     <none>     (no description available)
ii  udev                          164-4      /dev/ and hotplug management daemo

-- debconf information:
* cupsys/raw-print: true
* cupsys/backend: ipp, dnssd