Public bug reported:

While looking what hp-plugin was doing when it was semmingly hung I
noticed that it calls wget to download an executable via plain HTTP even
though www.openprinting.org supports HTTPS:

Relevant part from ps axf:

 10353 pts/4    Ss     0:00  |   \_ /bin/bash
 10492 pts/4    Sl+    0:07  |   |   \_ /usr/bin/python3 /usr/bin/hp-plugin
 10507 pts/5    Ss+    0:00  |   |       \_ /usr/bin/wget --cache=off -P 
$HOME/.hplip 
http://www.openprinting.org/download/printdriver/auxfiles/HP/plugins/hplip-3.20.3-plugin.run


Looks like there are two issues here:

1. Unless a local file exists, a plugin descriptor is downloaded from 
http://hplip.sf.net/plugin.conf
2. That one then contains the actual download URLs at www.openprinting.org 
which are plain HTTP as well

The first one has checksums so theoretically it might be ok to download
the latter via HTTP (though there is no reason to do so) but the
checksums are downloaded via plain HTTP as well.

** Affects: hplip
     Importance: Undecided
         Status: New

** Affects: hplip (Ubuntu)
     Importance: Undecided
         Status: New

** Summary changed:

- hp-plugin downloads from openprinting.org via insecure HTTP from
+ hp-plugin downloads plugins via insecure HTTP

** Also affects: hplip
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1898456

Title:
  hp-plugin downloads plugins via insecure HTTP

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