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#!/bin/sh
set -e
test "$1" = 'configure' || exit 0
if test ! -e /etc/dropbear/dropbear_rsa_host_key; then
if test -f /etc/ssh/ssh_host_rsa_key; then
echo "Converting existing OpenSSH RSA host key to Dropbear format."
/usr/lib/dropbear/dropbearconvert openssh dropbear \
/etc/ssh/ssh_host_rsa_key /etc/dropbear/dropbear_rsa_host_key
else
echo "Generating Dropbear RSA key. Please wait."
dropbearkey -t rsa -f /etc/dropbear/dropbear_rsa_host_key
fi
fi
if test ! -e /etc/dropbear/dropbear_dss_host_key; then
if test -f /etc/ssh/ssh_host_dsa_key; then
echo "Converting existing OpenSSH RSA host key to Dropbear format."
/usr/lib/dropbear/dropbearconvert openssh dropbear \
/etc/ssh/ssh_host_dsa_key /etc/dropbear/dropbear_dss_host_key
else
echo "Generating Dropbear DSS key. Please wait."
dropbearkey -t dss -f /etc/dropbear/dropbear_dss_host_key
fi
fi
if test ! -s /etc/default/dropbear; then
# check whether OpenSSH seems to be installed.
if test -x /usr/sbin/sshd; then
cat <<EOT
OpenSSH appears to be installed. Setting /etc/default/dropbear so that
Dropbear will not start by default. Edit this file to change this behaviour.
EOT
cat >>/etc/default/dropbear <<EOT
# disabled because OpenSSH is installed
# change to NO_START=0 to enable Dropbear
NO_START=1
EOT
fi
cat >>/etc/default/dropbear <<EOT
# the TCP port that Dropbear listens on
DROPBEAR_PORT=22
# any additional arguments for Dropbear
DROPBEAR_EXTRA_ARGS=
# specify an optional banner file containing a message to be
# sent to clients before they connect, such as "/etc/issue.net"
DROPBEAR_BANNER=""
# RSA hostkey file (default: /etc/dropbear/dropbear_rsa_host_key)
#DROPBEAR_RSAKEY="/etc/dropbear/dropbear_rsa_host_key"
# DSS hostkey file (default: /etc/dropbear/dropbear_dss_host_key)
#DROPBEAR_DSSKEY="/etc/dropbear/dropbear_dss_host_key"
# Receive window size - this is a tradeoff between memory and
# network performance
DROPBEAR_RECEIVE_WINDOW=65536
EOT
fi
if test -x /etc/init.d/dropbear; then
update-rc.d dropbear defaults >/dev/null
if test -x /usr/sbin/invoke-rc.d; then
invoke-rc.d dropbear restart
else
/etc/init.d/dropbear restart
fi
fi
if test -n "$2" && dpkg --compare-versions "$2" lt '0.50-4' &&
update-service --check dropbear 2>/dev/null; then
update-service --remove /etc/dropbear 2>/dev/null || :
sleep 6
rm -rf /var/run/dropbear /var/run/dropbear.log
update-service --add /etc/dropbear || :
fi
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