Enigmail does not detect PGP/MIME signatures inside MIME containers

[Roland Hieber]

Enigmail 1.4 from lucid-proposed does not detect PGP/MIME signatures if the message itself is encapsulated in another MIME container, which is the case on mailman mailing lists (see attached sample mail). In this case, the OpenPGP pane in the message view (the one saying "Good signature from...") is not visible, but no error is shown either. With the older Enigmail 1.1 (from current lucid-updates), this detection worked well, and the OpenPGP pane with the validity of the signature was shown as expected.

$ lsb_release -rd
Description: Ubuntu 10.04.4 LTS
Release: 10.04

$ apt-cache policy enigmail
enigmail:
  Installed: 2:1.4-0ubuntu0.10.04.1
  Candidate: 2:1.4-0ubuntu0.10.04.1
  Version table:
     2:1.4-1 0
         96 http://debian.tu-bs.de/debian/ wheezy/main Packages
 *** 2:1.4-0ubuntu0.10.04.1 0
        990 http://de.archive.ubuntu.com/ubuntu/ lucid-proposed/universe Packages
        100 /var/lib/dpkg/status
     2:1.1.2-1ubuntu1 0
         99 http://de.archive.ubuntu.com/ubuntu/ maverick/universe Packages
         98 http://de.archive.ubuntu.com/ubuntu/ natty/universe Packages
     2:1.1.2-0ubuntu0.10.04.1 0
        990 http://de.archive.ubuntu.com/ubuntu/ lucid-updates/universe Packages
        990 http://security.ubuntu.com/ubuntu/ lucid-security/universe Packages
     2:1.0.1-5 0
         97 http://debian.tu-bs.de/debian/ squeeze/main Packages
     2:1.0.1-0ubuntu1 0
        990 http://de.archive.ubuntu.com/ubuntu/ lucid/universe Packages

[Roland Hieber (rohieb)]

FWIW, it works with inline PGP signatures inside such MIME containers.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Matthias Nass (torusernet)]

Same @

lsb_release -rd:
Description: Ubuntu 12.04 LTS
Release: 12.04

apt-cache policy enigmail:
enigmail:
  Installiert: 2:1.4.1-0ubuntu0.12.04.1
  Kandidat: 2:1.4.1-0ubuntu0.12.04.1
  Versionstabelle:
 *** 2:1.4.1-0ubuntu0.12.04.1 0
        500 http://de.archive.ubuntu.com/ubuntu/ precise-updates/universe i386 Packages
        500 http://security.ubuntu.com/ubuntu/ precise-security/universe i386 Packages
        100 /var/lib/dpkg/status
     2:1.4-0ubuntu1 0
        500 http://de.archive.ubuntu.com/ubuntu/ precise/universe i386 Packages

[Roland Hieber (rohieb)]

I don't understand, why was it working in previous versions of Enigmail
then...?

-- rohieb