config is in icinga2-classicui 2.4.1-2ubuntu1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37  | #!/bin/sh
set -e
. /usr/share/debconf/confmodule
db_fget icinga2-classicui/adminpassword seen || true
password_seen="$RET"
if [ "$1" = "reconfigure" ]; then
    password_seen=false
fi
if [ "$password_seen" != "true" ]; then
	# the passwords are reset at the end of every postinst run,
	# however, they are left in the "seen" state so that the
	# admin is not prompted for them at every upgrade.
	while [ ! "$passwordsmatch" ]; do
		#only ask for a password if no htpasswd exists
		db_input high icinga2-classicui/adminpassword || true
		db_input high icinga2-classicui/adminpassword-repeat || true
		db_go || true
		db_get icinga2-classicui/adminpassword
		p1="$RET"
		db_get icinga2-classicui/adminpassword-repeat
		p2="$RET"
		if [ "$p1" = "$p2" ]; then
			passwordsmatch="yes"
		else
			db_fset icinga2-classicui/adminpassword seen false
			db_fset icinga2-classicui/adminpassword-repeat seen false
			db_fset icinga2-classicui/adminpassword-mismatch seen false
			db_input critical icinga2-classicui/adminpassword-mismatch || true
		fi
	done
fi
db_go || true
 |