Bug#865598: cups: CUPS server ignores SSL key and certificate setting

[Drexl Johannes <johannes.drexl@ffgr.de>]

Package: cups
Version: 2.2.1-8
Severity: normal

Dear Maintainer,

I've just upgraded to Stretch and noticed CUPS won't use my certificate/key
files any longer. It seems the options ServerCertificate and ServerKey have
moved somewhere else (or dropped without upgrade notice), and this isn't really
documented. CUPS now refuses to use those options alltogether, insisting on
FQDN.key and FQDN.crt for no apparent reason whatsoever, generating the files
as soon as one visits the web interface. The possible solution to this was to
manually symlink the intended certificate/key to the hardcoded file names.
While this works without (apparent) problems, I don't think this should be
necessary nor forced upon the user.

-- System Information:
Debian Release: 9.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-3-amd64 (SMP w/8 CPU cores)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8), LANGUAGE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages cups depends on:
ii  cups-client            2.2.1-8
ii  cups-common            2.2.1-8
ii  cups-core-drivers      2.2.1-8
ii  cups-daemon            2.2.1-8
ii  cups-filters           1.11.6-3
ii  cups-ppdc              2.2.1-8
ii  cups-server-common     2.2.1-8
ii  debconf [debconf-2.0]  1.5.61
ii  ghostscript            9.20~dfsg-3.2
ii  libavahi-client3       0.6.32-2
ii  libavahi-common3       0.6.32-2
ii  libc-bin               2.24-11
ii  libc6                  2.24-11
ii  libcups2               2.2.1-8
ii  libcupscgi1            2.2.1-8
ii  libcupsimage2          2.2.1-8
ii  libcupsmime1           2.2.1-8
ii  libcupsppdc1           2.2.1-8
ii  libgcc1                1:6.3.0-18
ii  libstdc++6             6.3.0-18
ii  libusb-1.0-0           2:1.0.21-1
ii  poppler-utils          0.48.0-2
ii  procps                 2:3.3.12-3

Versions of packages cups recommends:
ii  avahi-daemon                     0.6.32-2
ii  colord                           1.3.3-2
ii  cups-filters [ghostscript-cups]  1.11.6-3
ii  printer-driver-gutenprint        5.2.11-1+b2

Versions of packages cups suggests:
ii  cups-bsd                                   2.2.1-8
pn  cups-pdf                                   <none>
pn  foomatic-db-compressed-ppds | foomatic-db  <none>
pn  hplip                                      <none>
pn  printer-driver-hpcups                      <none>
ii  smbclient                                  2:4.5.8+dfsg-2
ii  udev                                       232-25

-- debconf information:
  cupsys/backend: lpd, socket, usb, snmp, dnssd
  cupsys/raw-print: true