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[Bug 1862226] Re: /usr/sbin/sss_obfuscate fails to run: ImportError: No module named pysss

 

I've just run a test against the modified version built in a ppa:
=== >8 ====
# apt upgrade 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following NEW packages will be installed:
  python-sss
The following packages will be upgraded:
  libipa-hbac0 libnss-sss libpam-sss libsss-certmap0 libsss-idmap0 libsss-nss-idmap0 libsss-simpleifp0 libsss-sudo python3-sss sssd sssd-ad sssd-ad-common sssd-common
  sssd-dbus sssd-ipa sssd-krb5 sssd-krb5-common sssd-ldap sssd-proxy sssd-tools
20 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 2350 kB of archives.
After this operation, 539 kB of additional disk space will be used.
Do you want to continue? [Y/n] ^C
=== eof ===

So even running 'apt upgrade' pulls in the missing dependency.

I checked 'man apt':
"upgrade (...)
New packages will be installed if required to satisfy dependencies, but existing packages will never be removed."

So I guess that's consistent with what I observed. This makes it 1 less
thing to worry about.

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https://bugs.launchpad.net/bugs/1862226

Title:
  /usr/sbin/sss_obfuscate fails to run: ImportError: No module named
  pysss

Status in sssd package in Ubuntu:
  Fix Released
Status in sssd source package in Bionic:
  In Progress
Status in sssd source package in Eoan:
  Fix Released
Status in sssd package in Debian:
  Fix Released

Bug description:
  [Impact]

  Current bionic d/control doesn't include "python3-sss" or "python-sss"
  as runtime dependency:

  Package: sssd-tools
  Architecture: any
  Depends:
   python,
   sssd-common (= ${binary:Version}),
   ${misc:Depends},
   ${shlibs:Depends}
  Description: System Security Services Daemon -- tools
   Provides a set of daemons to manage access to remote directories and
   authentication mechanisms. It provides an NSS and PAM interface toward
   the system and a pluggable backend system to connect to multiple different
   account sources. It is also the basis to provide client auditing and policy
   services for projects like FreeIPA.

  Current workaround:
  One can install the dependency by hand.

  [Test Case]

  # lsb_release -cs
  bionic

  # Install sssd-tools

  # sss_obfuscate
  Traceback (most recent call last):
    File "/usr/sbin/sss_obfuscate", line 8, in <module>
      import pysss
  ImportError: No module named pysss

  [Potential Regression]

  * After adding the dependency, if one run let's say 'apt-get upgrade':

  APT-GET(8) - upgrade:
  under no circumstances are currently installed packages removed, or packages not already installed retrieved and installed.

  Meaning that one who would go that route, may not be able to get the
  update and will continue to experience the problem (No module named
  pysss)

  APT-GET(8) - dist-upgrade:
  dist-upgrade in addition to performing the function of upgrade, also intelligently handles changing dependencies with new versions of packages

  * Since sss_obfuscate never work out of the box (without one
  installing the missing dependency manually) ... first I don't expect a
  significant adoption/use of this binary, since it took years for one
  to discover it ... but since we are 'enabling' sss_obfuscate to
  finally work out of the box ... who knows what bugs can be found in
  sss_obfuscate that we didn't know before because it was simply not
  used.

  Clearly autopkgtest doesn't test that functionnality, otherwsie it
  would have caught this before. Some dogfooding testing of
  sss_obfuscate in -proposed may be useful to catch potential bugs
  related to its "enablement". It should be trivial to test, the program
  does only one thing:

  SSS_OBFUSCATE(8):
  sss_obfuscate converts a given password into human-unreadable format and places it into appropriate domain section of the SSSD config file.

  http://manpages.ubuntu.com/manpages/bionic/en/man8/sss_obfuscate.8.html

  * Worst worst case, sss_obfuscate still won't work as it currently
  does anyway, and so far it didn't seems to be a major problem in the
  sssd ubuntu community. But with the dogfooding testing we should be
  good to catch any obvious irregularity.

  It should be fine since disco uses the same upstream version and has
  the right dependendy, so sssd-tools in Bionic and Disco are very code
  alike.

  [Other Infos]

  * Debian upstream:
  https://salsa.debian.org/sssd-team/sssd/commit/b41c0f81c6dcc672636220c46ed3d52f3b69ba7c

  * Debian Bug:
  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=905220

  Rmadison:
  => sssd-tools | 1.16.1-1ubuntu1.4  | bionic-updates
     sssd-tools | 2.2.0-4ubuntu1     | eoan
     sssd-tools | 2.2.2-1            | focal
     sssd-tools | 2.2.2-1ubuntu1     | focal-proposed

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