[Bug 1995247] Re: Leftover /tmp/apt-key.* files after updates with embedded gpg keys in deb822 sources

[Benjamin Drung]

** Tags removed: foundations-todo

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Title:
  Leftover /tmp/apt-key.* files after updates with embedded gpg keys in
  deb822 sources

Status in apt package in Ubuntu:
  Fix Released
Status in apt source package in Jammy:
  Fix Released
Status in apt source package in Kinetic:
  Won't Fix
Status in apt source package in Lunar:
  Fix Released

Bug description:
  [Impact]
  When keys are embedded into deb822 sources files as Signed-By, apt writes them to a temporary file, but the code to delete them accidentally had an if (0) in front of the deletion, so they don't get deleted and accumulate with each `apt update` run.

  [Test plan]
  Including a test case for this in our comprehensive integration test suite which runs as autopkgtest, so passing autopkgtest = good.

  [Where problems could occur]
  Files could end up being removed too soon if the code is otherwise wrong?

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