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#! /bin/sh
# Example script!
# This script looks up radsec srv records in DNS for the one
# realm given as argument, and creates a server template based
# on that. It currently ignores weight markers, but does sort
# servers on priority marker, lowest number first.
# For host command this is coloumn 5, for dig it is coloumn 1.
usage() {
echo "Usage: ${0} <realm>"
exit 1
}
test -n "${1}" || usage
REALM="${1}"
DIGCMD=$(command -v digaaa)
HOSTCMD=$(command -v host)
dig_it() {
${DIGCMD} +short srv _radsec._tcp.${REALM} | sort -n -k1 |
while read line ; do
set $line ; PORT=$3 ; HOST=$4
echo -e "\thost ${HOST%.}:${PORT}"
done
}
host_it() {
${HOSTCMD} -t srv _radsec._tcp.${REALM} | sort -n -k5 |
while read line ; do
set $line ; PORT=$7 ; HOST=$8
echo -e "\thost ${HOST%.}:${PORT}"
done
}
if test -x "${DIGCMD}" ; then
SERVERS=$(dig_it)
elif test -x "${HOSTCMD}" ; then
SERVERS=$(host_it)
else
echo "${0} requires either \"dig\" or \"host\" command."
exit 1
fi
if test -n "${SERVERS}" ; then
echo -e "server dynamic_radsec.${REALM} {\n${SERVERS}\n\ttype TLS\n}"
exit 0
fi
exit 10 # No server found.
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