foodoord/foodoor-update-keydb

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#!/bin/bash
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set -e
export PATH="/usr/bin:/bin:/usr/sbin:/sbin"
dest=/var/run/foodoor-keys
temp_outfile="$dest.tmp"
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if [ ! -e "${dest}/.git/config" ]
then
#echo "Repo does not exist, trying to clone..."
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( cd /var/run && git clone --quiet --single-branch --depth=1 ssh://git.chaospott.de/Keyverwaltung/foodoor-keys.git "${dest}" )
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else
#echo "Repo exists, updating..."
( cd "${dest}" && git fetch --quiet && git merge --quiet origin/master master )
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fi
rm -f ${temp_outfile}
find "${dest}/keys" -name '*.pub' | sort | \
while read keyfile
do
ssh-keygen -l -f ${keyfile} &> /dev/null
if [ $? -eq 0 ]; then
valid=false
keyinfo=$(ssh-keygen -l -f ${keyfile}) # The whole key information
crypto=$(echo "${keyinfo}" | cut -d" " -f4) # Looks like "(RSA)" or "(ED25519)"
key_length=$(echo "${keyinfo}" | cut -d" " -f1)
if [ "${crypto}" == "(RSA)" ]; then
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if [ ${key_length} -lt 4096 ]; then
echo "Key size of key ${keyfile} not equal to 4096. Not adding it to key database." >&2
continue
else
valid=true
fi
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elif [ "${crypto}" == "(ED25519)" ]; then
valid=true
fi
if [ "$valid" = true ]; then
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echo "command=\"/usr/sbin/foodoor \$action \",no-port-forwarding,no-X11-forwarding,no-agent-forwarding $(cat ${keyfile})" >> ${temp_outfile}
fi
fi
done
for appendix in open close door
do
action="$appendix"
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if [ "$action" = "door" ]
then
action=""
fi
export action
outfile="${dest}/authorized_keys.${appendix}"
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cat ${temp_outfile} |envsubst > ${outfile}
# Oben
install -d -o ${appendix} -g nogroup -m 0700 /var/lib/foodoor/${appendix}/.ssh
install -b -S .last -o ${appendix} -g nogroup -m 0600 ${outfile} /var/lib/foodoor/${appendix}/.ssh/authorized_keys
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# Unten
#if [ "${action}" = "open" ]; then
# owner="unlock"
#elif [ "${action}" = "close" ]; then
# owner="lock"
#fi
#install -d -o ${owner} -g nogroup -m 0700 /var/lib/foodoor/${action}/.ssh
#install -b -S .last -o ${owner} -g nogroup -m 0600 ${outfile} /var/lib/foodoor/${action}/.ssh/authorized_keys
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done