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#!/bin/bash | ||
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# Activate/deactivate SSH | ||
# | ||
# | ||
# Copyleft 2017 by Courtney Hicks | ||
# GPL licensed (see end of file) * Use at your own risk! | ||
# | ||
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ACTIVE_=no | ||
USER_=pi | ||
PASS_=raspberry | ||
CONFIRM_=raspberry | ||
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DESCRIPTION="Activate or deactivate SSH" | ||
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install() { :; } | ||
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is_active() | ||
{ | ||
systemctl status ssh &>/dev/null | ||
} | ||
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configure() | ||
{ | ||
[[ $ACTIVE_ != "yes" ]] && { | ||
systemctl disable ssh | ||
echo "SSH disabled" | ||
return 0 | ||
} | ||
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# Check for bad ideas | ||
[[ "$USER_" == "pi" ]] && [[ "$PASS_" == "raspberry" ]] && { | ||
echo "Refusing to use the default Raspbian user and password. It's insecure" | ||
return 1 | ||
} | ||
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# Change credentials | ||
id "$USER_" &>/dev/null || useradd "$USER_" | ||
echo -e "$PASS_\n$CONFIRM_" | passwd "$USER_" || return 1 | ||
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# Check for insecure default password ( taken from old jessie method ) | ||
local SHADOW="$( grep -E '^pi:' /etc/shadow )" | ||
test -n "${SHADOW}" && { | ||
local SALT=$(echo "${SHADOW}" | sed -n 's/pi:\$6\$//;s/\$.*//p') | ||
local HASH=$(mkpasswd -msha-512 raspberry "$SALT") | ||
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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 | ||
} | ||
} | ||
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# Enable | ||
systemctl enable ssh | ||
systemctl start ssh | ||
echo "SSH enabled" | ||
} | ||
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# 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 |