[Bug 1911463] [NEW] Can no longer successfully download Flash during postinst

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Gunnar Hjalmarsson (gunnarhj):

[Impact]

Since Adobe Flash Player is officially no longer available or end of
life, they seem to have made a redirect to a link, that
pepperflashplugin-nonfree likely uses for obtaining Flash, to the 'End
of Life' page of the Flash website. This means that when installing
pepperflashplugin-nonfree from now on it'll keep trying to download the
HTML file for the end-of-life page.

The proposed uploads are plain no-change SRU backports of the dummy
package in hirsute sync'ed from Debian. With that we prevent more users
from stalling their package system by trying to install or update
pepperflash.

[Test Case]

* Install pepperflashplugin-nonfree from
  {groovy,focal,bionic,xenial}-proposed

* Confirm that it installs successfully without causing any issues
  with the package system.

* Run the "update-pepperflashplugin-nonfree --install" command and
  see the EOL notice.

[Where problems could occur]

We replace an obsolete package which creates issues with a dummy. The
upgrade removes a config file in /etc, and the download and install
functionality is not present in the new version. TBH I can't think of
anything special.

[Other Info]

Ubuntu 20.04.1 LTS
Newly installed pepperflashplugin-nonfree - 1.8.6ubuntu1

Someone should probably update this package to, instead of trying in
vain to download Flash, show a notice saying Flash has reached end-of-
life and so this package is no longer available. Packages like Opera
from the official Opera repository still depend on this package,
currently.

Output:
Unpacking pepperflashplugin-nonfree (1.8.6ubuntu1) ...
Setting up pepperflashplugin-nonfree (1.8.6ubuntu1) ...
--2021-01-13 18:18:25--  https://get.adobe.com/flashplayer/webservices/json/?platform_type=Linux&platform_arch=x86_64&browser_dist=Chrome
Resolving get.adobe.com (get.adobe.com)... 193.104.215.66
Connecting to get.adobe.com (get.adobe.com)|193.104.215.66|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://www.adobe.com/products/flashplayer/end-of-life.html?platform_type=Linux&platform_arch=x86_64&browser_dist=Chrome [following]
--2021-01-13 18:18:25--  https://www.adobe.com/products/flashplayer/end-of-life.html?platform_type=Linux&platform_arch=x86_64&browser_dist=Chrome
Resolving www.adobe.com (www.adobe.com)... 2a02:26f0:104::1701:f2c0, 2a02:26f0:104::1701:f2cb, 176.255.202.96, ...
Connecting to www.adobe.com (www.adobe.com)|2a02:26f0:104::1701:f2c0|:443... connected.

** Affects: pepperflashplugin-nonfree (Ubuntu)
     Importance: High
     Assignee: Gunnar Hjalmarsson (gunnarhj)
         Status: In Progress

** Affects: pepperflashplugin-nonfree (Ubuntu Xenial)
     Importance: High
     Assignee: Gunnar Hjalmarsson (gunnarhj)
         Status: In Progress

** Affects: pepperflashplugin-nonfree (Ubuntu Bionic)
     Importance: High
     Assignee: Gunnar Hjalmarsson (gunnarhj)
         Status: In Progress

** Affects: pepperflashplugin-nonfree (Ubuntu Focal)
     Importance: High
     Assignee: Gunnar Hjalmarsson (gunnarhj)
         Status: In Progress

** Affects: pepperflashplugin-nonfree (Ubuntu Groovy)
     Importance: High
     Assignee: Gunnar Hjalmarsson (gunnarhj)
         Status: In Progress

** Affects: pepperflashplugin-nonfree (Debian)
     Importance: Unknown
         Status: Unknown

-- 
Can no longer successfully download Flash during postinst
https://bugs.launchpad.net/bugs/1911463
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