cdist/cdist/conf/type/__ssh_authorized_keys/gencode-remote

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#!/bin/sh -e
#
# 2012-2014 Steven Armstrong (steven-cdist at armstrong.cc)
# 2014 Nico Schottelius (nico-cdist at schottelius.org)
# 2021 Darko Poljak (darko.poljak at gmail.com)
#
# This file is part of cdist.
#
# cdist 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 3 of the License, or
# (at your option) any later version.
#
# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
#
state="$(cat "$__object/parameter/state" 2>/dev/null)"
file="$(cat "$__object/explorer/file")"
keys_file="$__object/explorer/keys"
_type_and_key() {
echo "$1" | tr ' ' '\n' | awk '/^(ssh|ecdsa)-[^ ]+/ { printf $1" "; getline; printf $1 }'
}
_gen_key_entry() {
_the_key="$1"
# generate the key entry as it should be
if [ -f "$__object/parameter/option" ]; then
# comma seperated list of options
options="$(tr '\n' ',' < "$__object/parameter/option")"
printf '%s ' "${options%*,}"
fi
if [ -f "$__object/parameter/comment" ]; then
# extract the keytype and base64 encoded key ignoring any options and comment
printf '%s ' "$(echo "${_the_key}" | tr ' ' '\n' | awk '/^(ssh|ecdsa)-[^ ]+/ { printf $1" "; getline; printf $1 }')"
# override the comment with the one explicitly given
printf '%s' "$(cat "$__object/parameter/comment")"
else
printf '%s' "${_the_key}"
fi
printf '\n'
}
cat << DONE
new_keys=\$(mktemp ${file}.cdist.XXXXXXXXXX)
patterns=\$(mktemp ${file}.cdist.XXXXXXXXXX)
tmpfile=\$(mktemp ${file}.cdist.XXXXXXXXXX)
# preserve ownership and permissions of existing file
if [ -f "${file}" ]
then
cp -p "${file}" "\${tmpfile}"
fi
DONE
while read -r key; do
# validate key
validated_key="$(echo "${key}" | tr ' ' '\n' | awk '/^(ssh|ecdsa)-[^ ]+/ { printf $1" "; getline; printf $1 }')"
if [ -z "${validated_key}" ]
then
echo "Key is invalid: \"${key}\"" >&2
exit 1
fi
type_and_key="$(_type_and_key "${key}")"
# remove conflicting entries
cat << DONE
echo '${type_and_key}\\([ \\\\n].*\\)*\$' >> "\${patterns}"
DONE
entry="$(_gen_key_entry "${key}")"
case "${state}" in
present)
# escape single quotes
_line_sanitised=$(echo "${entry}" | sed -e "s/'/'\"'\"'/g")
cat << DONE
printf "%s\\n" "${_line_sanitised}" >> "\${new_keys}"
DONE
echo "added to ${file} (${entry})" >> "$__messages_out"
;;
absent)
cat << DONE
echo "${entry}" >> "\${patterns}"
DONE
echo "removed from ${file} (${entry})" >> "$__messages_out"
;;
esac
done < "$__object/parameter/key"
set --
cat << DONE
if [ -s "\${patterns}" ] && [ -f "${file}" ]
then
grep -v -f "\${patterns}" "${file}" > "\${tmpfile}" || true
fi
if [ -s "\${new_keys}" ]
then
cat "\${new_keys}" >> "\${tmpfile}"
fi
rm -f "\${patterns}"
rm -f "\${new_keys}"
DONE
if [ -f "$__object/parameter/remove-unknown" ] && [ -s "${keys_file}" ]
then
while read -r key
do
type_and_key="$( _type_and_key "${key}" )"
if grep -Fq "${type_and_key}" "$__object/parameter/key"
then
continue
fi
# build grep patterns
cat << DONE
echo "${key}" >> "\${patterns}"
DONE
done < "${keys_file}"
fi
cat << DONE
if [ -s "\${patterns}" ] && [ -f "${file}" ]
then
newfile=\$(mktemp ${file}.cdist.XXXXXXXXXX)
# preserve ownership and permissions of existing file
if [ -f "${file}" ]; then
cp -p "${file}" "\${newfile}"
fi
grep -v -F -x -f "\${patterns}" "\${tmpfile}" > "\${newfile}" || true
mv -f "\${newfile}" "${file}"
rm -f "\${tmpfile}"
else
mv -f "\${tmpfile}" "${file}"
fi
rm -f "\${patterns}"
rm -f "\${new_keys}"
DONE