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#!/bin/bash
# Activate/deactivate SSH
#
#
# Copyleft 2017 by Courtney Hicks and Ignacio Nunez Hernanz
# GPL licensed (see end of file) * Use at your own risk!
#
install() { :; }
is_active()
{
systemctl -q is-enabled ssh &>/dev/null
}
configure()
{
[[ $ACTIVE != "yes" ]] && {
systemctl stop ssh
systemctl disable ssh
echo "SSH disabled"
return 0
}
# Check for bad ideas
[[ "$USER" == "pi" ]] && [[ "$PASS" == "raspberry" ]] && {
echo "Refusing to use the default Raspbian user and password. It's insecure"
return 1
}
[[ "$USER" == "root" ]] && [[ "$PASS" == "1234" ]] && {
echo "Refusing to use the default Armbian user and password. It's insecure"
return 1
}
# Change credentials
id "$USER" &>/dev/null || { echo "$USER doesn't exist"; return 1; }
echo -e "$PASS\n$CONFIRM" | passwd "$USER" || return 1
# Reenable pi user
[[ "$USER" == "pi" ]] && usermod pi -s /bin/bash
# Check for insecure default pi password ( taken from old jessie method )
# TODO Due to Debian bug #1003151 with mkpasswd this feature is not working properly at the moment - https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1837456.html
#local SHADOW SALT HASH
#SHADOW="$( grep -E '^pi:' /etc/shadow )"
#test -n "${SHADOW}" && {
#SALT=$(awk -F[:$] '{print $5}' <<<"${SHADOW}")
#[[ "${SALT}" != "" ]] && {
#HASH=$(mkpasswd -myescrypt raspberry "${SALT}")
#grep -q "${HASH}" <<< "${SHADOW}" && {
#systemctl stop ssh
#systemctl disable ssh
#echo "The user pi is using the default password. Refusing to activate SSH"
#echo "SSH disabled"
#return 1
#}
#}
#}
# Check for insecure default root password ( taken from old jessie method )
#SHADOW="$( grep -E '^root:' /etc/shadow )"
#test -n "${SHADOW}" && {
#SALT=$(awk -F[:$] '{print $5}' <<<"${SHADOW}")
#[[ "${SALT}" != "" ]] && {
#HASH=$(mkpasswd -myescrypt 1234 "${SALT}")
#grep -q "${HASH}" <<< "${SHADOW}" && {
#systemctl stop ssh
#systemctl disable ssh
#echo "The user root is using the default password. Refusing to activate SSH"
#echo "SSH disabled"
#return 1
#}
#}
#}
# Enable
chage -d 0 "$USER"
systemctl enable ssh
systemctl start ssh
echo "SSH enabled"
}
# License
#
# This script is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this script; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
# Boston, MA 02111-1307 USA
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