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[Launchpad Bug Tracker <1672710@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package apt - 1.2.24

---------------
apt (1.2.24) xenial; urgency=medium

  * Microrelease covering fixes of 1.4.6
  * Fix parsing of or groups in build-deps with ignored packages (LP: #1694697)
  * apt.systemd.daily: Use unattended-ugrade --download-only if available.
    Instead of passing -d, which enables a debugging mode; check if
    unattended-upgrade supports an option --download-only (which is yet
    to be implemented) and use that (Closes: #863859)

apt (1.2.23) xenial; urgency=medium

  * Microrelease covering fixes of 1.4.4

  [ Alan Jenkins ]
  * apt.systemd.daily: fix error from locking code (Closes: #862567)

apt (1.2.22) xenial; urgency=medium

  [ Julian Andres Klode ]
  * Run unattended-upgrade -d in download part
  * apt.systemd.daily: Add locking
  * Split apt-daily timer into two (LP: #1686470)

  [ Matt Kraai ]
  * bash-completion: Fix spelling of autoclean (Closes: #861846)

apt (1.2.21) xenial; urgency=medium

  * Microrelease covering fixes of 1.4 and 1.4.1

  [ Julian Andres Klode ]
  * Ignore \.ucf-[a-z]+$ like we do for \.dpkg-[a-z]+$
  * systemd: Rework timing and add After=network-online (was LP #1615482)

  [ David Kalnischkies ]
  * Fix and avoid quoting in CommandLine::AsString (LP: #1672710)

  [ Unit 193 ]
  * apt-ftparchive: Support '.ddeb' dbgsym packages

 -- Julian Andres Klode <juliank@xxxxxxxxxx>  Mon, 19 Jun 2017 13:58:04
+0200

** Changed in: apt (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1672710

Title:
  apt fails to verify keys when Dir has space, and set via cmdline

Status in apt package in Ubuntu:
  Fix Released
Status in apt source package in Xenial:
  Fix Released
Status in apt source package in Yakkety:
  Won't Fix

Bug description:
  When Dir has a space, and it is set via APT_CONFIG file, keys are found and validated correctly.
  When Dir is set without a space via cmdline, keys are found and validated correctly.
  When Dir is set with a space via cmdline, keys are not found and repositories are not verified.

  [Test case]
  Please see attached reproducer, which works on xenial system (gpg1) but not on zesty system (gpg2)

  $ bash reproducer.sh
  ++ mktemp -d
  + tmpdir=/tmp/tmp.sFipy6h5yL
  + pushd /tmp/tmp.sFipy6h5yL
  /tmp/tmp.sFipy6h5yL ~
  + mkdir 'Sub Dir'
  + pushd 'Sub Dir'
  /tmp/tmp.sFipy6h5yL/Sub Dir /tmp/tmp.sFipy6h5yL ~
  + mkdir -p etc/apt/apt.conf.d
  + mkdir -p etc/apt/trusted.gpg.d
  + mkdir -p etc/apt/preferences.d
  + mkdir -p var/lib/apt/lists/partial
  + mkdir -p var/lib/dpkg
  + touch var/lib/dpkg/status
  + cp /etc/apt/trusted.gpg.d/ubuntu-keyring-2012-archive.gpg etc/apt/trusted.gpg.d/
  + echo 'deb http://archive.ubuntu.com/ubuntu/ trusty main'
  + echo 'Dir "/tmp/tmp.sFipy6h5yL/Sub Dir";'
  + export APT_CONFIG=/tmp/tmp.sFipy6h5yL/apt.conf
  + APT_CONFIG=/tmp/tmp.sFipy6h5yL/apt.conf
  + cat /tmp/tmp.sFipy6h5yL/apt.conf
  Dir "/tmp/tmp.sFipy6h5yL/Sub Dir";
  + :
  + : == list available keys ==
  + apt-key list
  /tmp/tmp.sFipy6h5yL/Sub Dir/etc/apt/trusted.gpg.d/ubuntu-keyring-2012-archive.gpg
  ---------------------------------------------------------------------------------
  pub   rsa4096 2012-05-11 [SC]
        790B C727 7767 219C 42C8  6F93 3B4F E6AC C0B2 1F32
  uid           [ unknown] Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@xxxxxxxxxx>

  + :
  + : == update with environ APT_CONFIG setting the Dir variable ==
  + apt update
  Ign:1 http://archive.ubuntu.com/ubuntu trusty InRelease
  Get:2 http://archive.ubuntu.com/ubuntu trusty Release [58.5 kB]
  Get:3 http://archive.ubuntu.com/ubuntu trusty Release.gpg [933 B]
  Get:4 http://archive.ubuntu.com/ubuntu trusty/main amd64 Packages [1,350 kB]
  Fetched 1,410 kB in 0s (1,959 kB/s)
  Reading package lists... Done
  Building dependency tree... Done
  All packages are up to date.
  + unset APT_CONFIG
  + :
  + : == update with cmdline Dir option setting Dir to relative pwd ==
  + apt -o Dir=./ update
  Ign:1 http://archive.ubuntu.com/ubuntu trusty InRelease
  Hit:2 http://archive.ubuntu.com/ubuntu trusty Release
  Reading package lists... Done
  Building dependency tree... Done
  All packages are up to date.
  + :
  + : == update with cmdline Dir option setting Dir to absolute pwd with space ==
  + apt -o 'Dir=/tmp/tmp.sFipy6h5yL/Sub Dir' update
  Ign:1 http://archive.ubuntu.com/ubuntu trusty InRelease
  Hit:2 http://archive.ubuntu.com/ubuntu trusty Release
  Err:3 http://archive.ubuntu.com/ubuntu trusty Release.gpg
    The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
  Reading package lists... Done
  Building dependency tree... Done
  All packages are up to date.
  W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com/ubuntu trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
  W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty/Release.gpg  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
  W: Some index files failed to download. They have been ignored, or old ones used instead.

  
  [Regression Potential]
  The fix changes the code to generate quotes in the Commmandline:AsString option, which dumps the command line for logging purposes. This was not parseable before, causing the file to be rejected, so what can happen is that something now works that did not before.

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