[Bug 1971715] Re: 22.04 idn -a domain.com idn: could not convert from ASCII to UTF-8

[Launchpad Bug Tracker]

This bug was fixed in the package libidn - 1.38-4ubuntu1

---------------
libidn (1.38-4ubuntu1) jammy; urgency=medium

  * debian/patches/initialise_langinfo_codeset.patch:
    - Fix handling of non-ASCII characters (LP: #1971715)

 -- Christopher James Halse Rogers <raof at ubuntu.com>  Tue, 01 Nov 2022
16:40:24 +0100

** Changed in: libidn (Ubuntu Jammy)
       Status: Fix Committed => Fix Released

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Title:
  22.04 idn -a domain.com idn: could not convert from ASCII to UTF-8

Status in libidn package in Ubuntu:
  Fix Released
Status in libidn source package in Jammy:
  Fix Released
Status in libidn source package in Kinetic:
  Fix Released

Bug description:
  [ Impact ]

  idn cannot handle non-ASCII characters

  [ Test Plan ]

  Existing state in 22.04:

  $ echo ü | idn
  idn: could not convert from ASCII to UTF-8

  Fixed output:

  $ echo ü | idn
  xn--tda

  [ Where problems could occur ]

  The patch enables an extra autotools features, so the most likely
  problem is a build failure. Currently non-ASCII characters are
  entirely unhandled, so there's no risk of regression there, but this
  could potentially turn clean failures into crashes or incorrect
  output.

  [Original report]

  On Ubuntu 22.04 Jammy:

  idn -a "xxx-tést.eu"
  idn: could not convert from ASCII to UTF-8

  And

  idn -u "xn--xxx-tst-fya.eu"
  idn: could not convert from UTF-8 to ASCII

  Expected:
  Successfully conversion from ASCII to UTF-8

  Ubuntu 20.04 / 18.04 it works fine

  Also with idn2 from UTF-8 to ASCII works as expected how ever support
  lacks from ASCII to UTF-8

  Description:	Ubuntu 22.04 LTS
  Release:	22.04

  root at test:~# echo $LC_ALL
  C.UTF-8

  root at test:~# apt-cache policy  idn
  idn:
    Installed: 1.38-4build1
    Candidate: 1.38-4build1
    Version table:
   *** 1.38-4build1 500
          500 https://mirror.hetzner.com/ubuntu/packages jammy/universe amd64 Packages
          100 /var/lib/dpkg/status

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