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#!/bin/bash
CONFIGFILE="/etc/default/dnscrypt-proxy"
DAEMON="/usr/sbin/dnscrypt-proxy"
. $CONFIGFILE
start_instance() {
if [ ! -r ${DNSCRYPTCONFIG[$1]} ]; then
echo "No configuration for instance $1 found!"
return
fi
PIDFILE=$(grep -i "^[[:space:]]*PidFile[[:space:]]\+." ${DNSCRYPTCONFIG[$1]} | awk '{print $2}')
if [ -z ${PIDFILE} ]; then
echo "No PID configuration for instance $1 found!"
return
fi
if [ -r ${PIDFILE} ]; then
echo "dnscrypt-proxy (instance $1) already running!"
return
fi
# dnscrypt-proxy will work without this, but it drops privileges before
# seeding the PRNG. libevent tries to work around a missing /dev/urandom
# but it's safer just to make sure it is available in the chroot.
if [ -n "${CHROOTDIR[$1]}" ]; then
if [ "$(readlink -f ${CHROOTDIR[$1]})" != "/" ]; then
if [ ! -d ${CHROOTDIR[$1]} ]; then
mkdir -p ${CHROOTDIR[$1]}
chmod 755 ${CHROOTDIR[$1]}
fi
if [ ! -d ${CHROOTDIR[$1]}/dev ]; then
mkdir -p ${CHROOTDIR[$1]}/dev
chmod 755 ${CHROOTDIR[$1]}/dev
fi
if [ ! -c ${CHROOTDIR[$1]}/dev/urandom ]; then
mknod -m 666 ${CHROOTDIR[$1]}/dev/urandom c 1 9
fi
if [ ! -c ${CHROOTDIR[$1]}/dev/random ]; then
mknod -m 666 ${CHROOTDIR[$1]}/dev/random c 1 8
fi
fi
fi
$DAEMON ${DNSCRYPTCONFIG[$1]}
}
stop_instance() {
if [ ! -r ${DNSCRYPTCONFIG[$1]} ]; then
echo "No configuration for instance $1 found!"
return
fi
PIDFILE=$(grep -i "^[[:space:]]*PidFile[[:space:]]\+." ${DNSCRYPTCONFIG[$1]} | awk '{print $2}')
if [ -z ${PIDFILE} ]; then
echo "No PID configuration for instance $1 found!"
return
fi
if [ ! -r ${PIDFILE} ]; then
echo "dnscrypt-proxy (instance $1) is not running!"
return
fi
echo "Stopping dnscrypt-proxy (instance $1)..."
kill $(cat ${PIDFILE})
}
status_instance() {
if [ ! -r ${DNSCRYPTCONFIG[$1]} ]; then
echo "No configuration for instance $1 found!"
return
fi
PIDFILE=$(grep -i "^[[:space:]]*PidFile[[:space:]]\+." ${DNSCRYPTCONFIG[$1]} | awk '{print $2}')
if [ -z ${PIDFILE} ]; then
echo "No PID configuration for instance $1 found!"
return
fi
if [ ! -r ${PIDFILE} ]; then
echo "dnscrypt-proxy (instance $1) is not running."
return
fi
PID=$(cat ${PIDFILE})
if [ -z "$PID" ]; then
echo "PID file is empty! dnscrypt-proxy (instance $1) does not appear to be running, but there is a stale PID file."
elif kill -0 $PID ; then
echo "dnscrypt-proxy (instance $1) is running."
else
echo "dnscrypt-proxy (instance $1) is not running, but there is a stale PID file."
fi
}
start() {
for i in `/usr/bin/seq 0 $((${#DNSCRYPTCONFIG[@]}-1))`
do
start_instance $i
done
}
stop() {
for i in `/usr/bin/seq 0 $((${#DNSCRYPTCONFIG[@]}-1))`
do
stop_instance $i
done
}
status() {
for i in `/usr/bin/seq 0 $((${#DNSCRYPTCONFIG[@]}-1))`
do
status_instance $i
done
}
case "$1" in
'start')
start
;;
'stop')
stop
;;
'restart')
stop
start
;;
'status')
status
;;
*_start)
INSTANCE=`echo $1 | /bin/cut -d '_' -f 1`
start_instance $INSTANCE
;;
*_stop)
INSTANCE=`echo $1 | /bin/cut -d '_' -f 1`
stop_instance $INSTANCE
;;
*_restart)
INSTANCE=`echo $1 | /bin/cut -d '_' -f 1`
stop_instance $INSTANCE
sleep 1
start_instance $INSTANCE
;;
*_status)
INSTANCE=`echo $1 | /bin/cut -d '_' -f 1`
status_instance $INSTANCE
;;
*)
echo "Usage: $0 {start|stop|restart|status|#_start|#_stop|#_restart}"
exit 1
;;
esac
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