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#!/bin/bash
if [ $# -ne 2 ]
then
echo "Starts Bro with the given arguments in the background and, when"
echo "it’s ready, starts Midbro."
echo
echo "Usage: $0 INTERFACE SCRIPT"
echo "Example: $0 lo modbus.bro"
exit
fi
INTERFACE=$1
SCRIPT=$(realpath $2)
BRODIR=$(realpath "$(dirname "$0")/../..")
BROLOG=$(realpath bro.log)
MIDBRO=${BRODIR}/broccoli/bin/midbropasad
MIDBROLOG=$(realpath midbro.log)
TMPDIR=$(mktemp --directory --tmpdir pasad.XXXX)
echo "* Starting Bro in background ..."
cd "${TMPDIR}" && sudo bro -i "${INTERFACE}" "${SCRIPT}" > ${BROLOG} 2>&1 &
BROPID=$!
echo "* Waiting for Bro to listen ..."
sleep 1
tail -f ${BROLOG} | while read LOGLINE
do
[[ "${LOGLINE}" == "listening on "* ]] && pkill -P $$ tail
done
echo "* Starting Midbro ..."
${MIDBRO}
kill $BROPID
rm -r "${TMPDIR}"
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