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#!/bin/sh
action=$1
version=$2
# Source debconf library.
. /usr/share/debconf/confmodule
db_version 2.0
get_config_option() {
option="$1"
[ -f /etc/ssh/sshd_config ] || return
# TODO: actually only one '=' allowed after option
perl -ne 'print if s/^[[:space:]]*'"$option"'[[:space:]=]+//i' \
/etc/ssh/sshd_config 2>/dev/null
}
if [ -e /etc/ssh/sshd_config ]
then
# An empty version means we're upgrading from before the package split,
# so check.
if dpkg --compare-versions "$version" lt 1:3.8.1p1-11
then
passwordauth="$(get_config_option PasswordAuthentication)"
crauth="$(get_config_option ChallengeResponseAuthentication)"
if [ "$passwordauth" = no ] && \
([ -z "$crauth" ] || [ "$crauth" = yes ])
then
db_input critical ssh/disable_cr_auth || true
fi
fi
fi
db_go
exit 0
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