Add package that enables network connectivity checks

This is modelled after network-manager-config-connectivity-debian.

Since people might consider this a potential privacy leak we don't make
it a hard dependency.

.gitignore

@@ -10,6 +10,7 @@ debian/librem5-gnome-notfit/
 debian/librem5-gnome-phone/
 debian/librem5-gnome/
 debian/librem5-non-gnome/
+debian/network-manager-config-connectivity-pureos/
 debian/*.debhelper
 debian/*.substvars
 debian/*.log

debian/control

@@ -174,3 +174,20 @@ Description: Default themes and configuration for the Librem-5
   * artwork
  .
  It should be installed on every librem5.
+
+Package: network-manager-config-connectivity-pureos
+Architecture: all
+Section: net
+Depends: network-manager,
+Description: NetworkManager configuration to enable connectivity checking
+ This package contains a configuration file which enables NetworkManager's
+ connectivity checking functionality.
+ .
+ NetworkManager will try to connect to a Purism server to determine the
+ connection status.
+ .
+ This is particularly useful for captive portal detection.
+ .
+ No user data is transmitted in the connectivity checks, but merely contacting
+ the Purism connectivity check servers reveals that the user is running a
+ PureOS(-based) operating system with NetworkManager.

debian/network-manager-config-connectivity-pureos.install

+default/nm/90-connectivity-pureos.conf      usr/lib/NetworkManager/conf.d/

debian/network-manager-config-connectivity-pureos.postinst

+#!/bin/sh
+
+set -e
+
+if [ "$1" = configure ]; then
+    nmcli general reload 2>/dev/null || true
+fi
+
+

default/nm/90-connectivity-pureos.conf

+[connectivity]
+uri=http://conncheck.pureos.net/hotspot.txt