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#!/bin/sh
# Refresh the dserver SSH key cache from user authorized_keys files.
# FreeBSD variant: called from the dserver rc.d start_precmd (because
# /var/run is volatile across reboots — cleanvar purges it) and by
# /usr/local/etc/periodic/daily/200.dserver-update-key-cache.
CACHEDIR=/var/run/dserver/cache
DSERVER_USER=dserver
DSERVER_GROUP=dserver
echo 'Updating SSH key cache'
ls /home/ | while read remoteuser; do
keysfile="/home/$remoteuser/.ssh/authorized_keys"
if [ -f "$keysfile" ]; then
cachefile="$CACHEDIR/$remoteuser.authorized_keys"
echo "Caching $keysfile -> $cachefile"
cp "$keysfile" "$cachefile"
chown "$DSERVER_USER:$DSERVER_GROUP" "$cachefile"
chmod 600 "$cachefile"
fi
done
# Remove stale cache entries for users whose authorized_keys no longer exist
find "$CACHEDIR" -name '*.authorized_keys' -type f | while read cachefile; do
remoteuser=$(basename "$cachefile" .authorized_keys)
if [ ! -f "/home/$remoteuser/.ssh/authorized_keys" ]; then
echo "Deleting obsolete cache file $cachefile"
rm "$cachefile"
fi
done
echo 'All set...'
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