81 lines
1.9 KiB
Bash
81 lines
1.9 KiB
Bash
#!/bin/sh
|
|
# env
|
|
# Written in 2022 by Lucas
|
|
# CC0 1.0 Universal/Public domain - No rights reserved
|
|
#
|
|
# To the extent possible under law, the author(s) have dedicated all
|
|
# copyright and related and neighboring rights to this software to the
|
|
# public domain worldwide. This software is distributed without any
|
|
# warranty. You should have received a copy of the CC0 Public Domain
|
|
# Dedication along with this software. If not, see
|
|
# <http://creativecommons.org/publicdomain/zero/1.0/>.
|
|
|
|
usage()
|
|
{
|
|
printf "Usage: %s [-c] [-l login_name] host ...\n" "${0##*/}" >&2
|
|
exit 1
|
|
}
|
|
|
|
err()
|
|
{
|
|
printf "%s: %s\n" "${0##*/}" "$*" >&2
|
|
exit 1
|
|
}
|
|
|
|
login_name=$(id -nu)
|
|
agent_mode=yes
|
|
while getopts cl: flag; do
|
|
case $flag in
|
|
c) agent_mode=confirm ;;
|
|
l) login_name=$OPTARG ;;
|
|
*) usage
|
|
esac
|
|
done
|
|
shift $(($OPTIND - 1))
|
|
[ $# -gt 0 ] || usage
|
|
|
|
if [ -z "$SSH_AUTH_SOCK" ] || [ ! -S "$SSH_AUTH_SOCK" ]; then
|
|
eval $(ssh-agent -s)
|
|
trap 'eval $(ssh-agent -ks)' EXIT INT QUIT TERM
|
|
fi
|
|
|
|
set -e
|
|
|
|
for host; do
|
|
[ -d "$host" ] || err "no host keys for $host"
|
|
|
|
# Load correct key into ssh-agent.
|
|
ssh -o AddKeysToAgent=$agent_mode "$login_name@$host" true
|
|
|
|
tmpdir=$(ssh "$login_name@$host" mktemp -dt hostkeys.XXXXXX)
|
|
|
|
sftp "$login_name@$host" <<EOF
|
|
put $host/* $tmpdir/
|
|
EOF
|
|
|
|
ssh "$login_name@$host" "cat - >\"$tmpdir/install-hostkeys.sh\"" <<EOF
|
|
cd "$tmpdir" && for type in ecdsa ed25519 rsa; do
|
|
sk=ssh_host_\${type}_key
|
|
pk=\$sk.pub
|
|
cert=\$sk-cert.pub
|
|
|
|
[ -s "\$sk" ] || continue
|
|
doas install -m 600 -o root -g wheel "\$sk" /etc/ssh/
|
|
doas install -m 644 -o root -g wheel "\$pk" /etc/ssh/
|
|
if [ -s "\$cert" ]; then
|
|
doas install -m 644 -o root -g wheel "\$cert" /etc/ssh/
|
|
fi
|
|
doas rcctl reload sshd
|
|
rm -Pf -- "\$sk" "\$pk" "\$cert"
|
|
done
|
|
EOF
|
|
|
|
# -t is needed for doas to read a password.
|
|
ssh -t "$login_name@$host" sh "$tmpdir/install-hostkeys.sh"
|
|
|
|
sftp "$login_name@$host" <<EOF
|
|
rm $tmpdir/*
|
|
rmdir $tmpdir/
|
|
EOF
|
|
done
|