[MIR] libemail-mime-encodings-perl ( libemail-mime-perl dependency as libmail-dmarc-perl dependency)

[Miriam España Acebal]

libemail-mime-encodings-perl

[Availability]
The package libemail-mime-encodings-perl is already in Ubuntu universe.
The package libemail-mime-encodings-perl build for the architectures it is designed to work on.
It currently builds and works for architectures: amd64 (all)
Link to package https://launchpad.net/ubuntu/+source/libemail-mime-encodings-perl

[Rationale]
The package libemail-mime-encodings-perl is required in Ubuntu main for libemail-mime-perl.
The package libemail-mime-encodings-perl will not generally be useful for a large part of
our user base, but is important/helpful still because it is required as runtime dependency by libemail-mime-perl,
(MIR bug https://bugs.launchpad.net/ubuntu/+source/libemail-mime-perl/+bug/2030880),
and this, in turn, is required as runtime dependency by libmail-dmarc-perl
( libmail-dmarc-perl is in the MIR process here: https://bugs.launchpad.net/ubuntu/+source/libmail-dmarc-perl/+bug/2023971 )

The package libemail-mime-encodings-perl is required in Ubuntu main no later than through the same scheduled requested for the libemail-mime-perl and libmail-dmarc-perl promotion, since libemail-mime-perl depends on it.

[Security]
No CVEs/security issues in this software in the past.
No `suid` or `sgid` binaries.
No executables in `/sbin` and `/usr/sbin`.
Package does not install services, timers or recurring jobs.
Package does not open privileged ports (ports < 1024).
Package does not expose any external endpoints.
Package does not contain extensions to security-sensitive software (filters, scanners, plugins, UI skins, ...);
it's a wrapper for other enconding perl modules.

[Quality assurance - function/usage]
The package works well right after install

[Quality assurance - maintenance]
The package is maintained well in Debian/Ubuntu and does
not have too many, long-term & critical, open bugs:
   - Ubuntu (0) https://bugs.launchpad.net/ubuntu/+source/libemail-mime-encodings-perl/+bug
   - Debian (0) https://bugs.debian.org/cgi-bin/pkgreport.cgi?src=libemail-mime-encodings-perl
   - Upstream's bug tracker (0) https://github.com/rjbs/Email-MIME-Encodings/issues
     + Upstream's repo last activity:
       - commit: in main, Jan 1, 2023
       - fixed/closed/merged issue: Jan 14, 2014

The package does not deal with exotic hardware we cannot support

[Quality assurance - testing]
The package runs a test suite on build time, if it fails
it makes the build fail: https://launchpadlibrarian.net/644463776/buildlog_ubuntu-lunar-amd64.libemail-mime-encodings-perl_1.317-1_BUILDING.txt.gz :

      dh_auto_test
    make -j4 test TEST_VERBOSE=1
   make[1]: Entering directory '/<<PKGBUILDDIR>>'
   PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(1, 'blib/lib', 'blib/arch')" t/*.t

The package runs an autopkgtest (via autodep8 using 'Testsuite: autopkgtest-pkg-perl' in d/control file - https://git.launchpad.net/ubuntu/+source/libemail-mime-encodings-perl/tree/debian/control#n6 -),
that runs essentialy the above build-time test suite. It is currently passing on
this list of architectures (amd64, arm64, armhf, ppc64el, riscv64, s390x), except on i386: https://autopkgtest.ubuntu.com/packages/l/libemail-mime-encodings-perl

The package does have failing autopkgtests tests right now, but since
they always failed they are handled as "ignored failure", this is
because the package the test depends on pkg-perl-tools package that is not
build for i386 since focal.

[Quality assurance - packaging]
debian/watch is present and works.

debian/control defines a correct Maintainer field : Debian Perl Group <email address hidden> ( https://git.launchpad.net/ubuntu/+source/libemail-mime-encodings-perl/tree/debian/control#n2)

This package does not yield massive lintian Warnings, Errors
  - recent build log of the package https://launchpadlibrarian.net/632296383/buildlog_ubuntu-lunar-amd64.libtext-unidecode-perl_1.30-3_BUILDING.txt.gz
  - full output from `lintian --pedantic` :
    # source
    ❯ lintian -EvIL +pedantic --show-overrides
      E: libemail-mime-encodings-perl changes: bad-distribution-in-changes-file mantic
      W: libemail-mime-encodings-perl: changelog-distribution-does-not-match-changes-file (unstable != mantic)
      W: libemail-mime-encodings-perl changes: distribution-and-changes-mismatch mantic unstable

    # binary
    ❯ lintian -EvIL +pedantic --show-overrides ../libemail-mime-encodings-perl_1.317-1.dsc
      W: libemail-mime-encodings-perl source: newer-standards-version 4.6.2 (current is 4.6.0.1)
      X: libemail-mime-encodings-perl source: debian-watch-does-not-check-gpg-signature [debian/watch]
      P: libemail-mime-encodings-perl source: update-debian-copyright 2022 vs 2023 [debian/copyright:11]

This package does not rely on obsolete or about to be demoted packages.
This package has no python2 or GTK2 dependencies.

The package will not be installed by default.

Packaging and build is easy, link to debian/rules: https://git.launchpad.net/ubuntu/+source/libemail-mime-encodings-perl/tree/debian/rules

[UI standards]
Application is not end-user facing (does not need translation).

[Dependencies]
No further depends or recommends dependencies that are not yet in main.

[Standards compliance]
This package correctly follows FHS and Debian Policy (4.6.2)

[Maintenance/Owner]
Owning Team will be Ubuntu Server Team.
Team is not yet, but will subscribe to the package before promotion.
This does not use static builds.
This does not use vendored code.
This package is not rust based.

The package successfully built during the most recent test rebuild : https://launchpad.net/ubuntu/+archive/test-rebuild-20230515-lunar-v3/+build/26135436/+files/buildlog_ubuntu-lunar-amd64.libemail-mime-encodings-perl_1.317-1_BUILDING.txt.gz

[Background information]
The Package description explains the package well.
Upstream Name is Email-MIME-Encodings .
Link to upstream project https://metacpan.org/dist/Email-MIME-Encodings

This has been in the archive since at least 2005 (1.3-1). It's never had a bug filed against it in Launchpad.

[Lukas Märdian (slyon)]

Review for Source Package: libemail-mime-encodings-perl

[Summary]
A simple wrapper around Perl's "MIME::Base64" and "MIME::QuotedPrint". Those
could probably used directly instead, but OTOH the wrapper is very small and
probably not worth the effort of maintaining a delta.

MIR team ACK

This does not need a security review.

List of specific binary packages to be promoted to main: libemail-mime-encodings-perl
Specific binary packages built, but NOT to be promoted to main: None

Notes:
#0 It does some minimal processing of linebreaks on base64 code before passing it into Perl native functions. Not requiring a security review for this.

Required TODOs:
- None

Recommended TODOs:
#1 The package should get a team bug subscriber before being promoted

[Duplication]
There is no other package in main providing the same functionality.
Perl's native "MIME::Base64" and "MIME::QuotedPrint" functions could probably used directly instead, but OTOH the wrapper is very small and probably not worth the effort of maintaining a delta.

[Dependencies]
OK:
- no other Dependencies to MIR due to this
  - SRCPKG checked with `check-mir`
  - all dependencies can be found in `seeded-in-ubuntu` (already in main)
  - none of the (potentially auto-generated) dependencies (Depends
    and Recommends) that are present after build are not in main
- no -dev/-debug/-doc packages that need exclusion
- No dependencies in main that are only superficially tested requiring
  more tests now.

Problems: None

[Embedded sources and static linking]
OK:
- no embedded source present
- no static linking
- does not have unexpected Built-Using entries
- not a go package, no extra constraints to consider in that regard
- not a rust package, no extra constraints to consider in that regard

Problems: None

[Security]
OK:
- history of CVEs does not look concerning
- does not run a daemon as root
- does not use webkit1,2
- does not use lib*v8 directly
- does not parse data formats (files [images, video, audio,
  xml, json, asn.1], network packets, structures, ...) from
  an untrusted source.
- does not expose any external endpoint (port/socket/... or similar)
- does not process arbitrary web content
- does not use centralized online accounts
- does not integrate arbitrary javascript into the desktop
- does not deal with system authentication (eg, pam), etc)
- does not deal with security attestation (secure boot, tpm, signatures)
- does not deal with cryptography (en-/decryption, certificates, signing, ...)

Problems: None

[Common blockers]
OK:
- does not FTBFS currently
- does have a test suite that runs at build time
  - test suite fails will fail the build upon error.
- does have a non-trivial test suite that runs as autopkgtest
- This does not need special HW for build or test
- no new python2 dependency
- Not a Python package
- Not a Go package

Problems: None

[Packaging red flags]
OK:
- Ubuntu does not carry a delta
- symbols tracking not applicable for this kind of code.
- debian/watch is present and looks ok (if needed, e.g. non-native)
- Upstream update history is sporadic
- Debian/Ubuntu update history is good
- the current release is packaged
- promoting this does not seem to cau...

[Miriam España Acebal (mirespace)]

Server Team's subscription to the bug requested on the MP attached to the bug.