#!/bin/sh
# realprod-nanny --- keep checking a Real stream, and restart things
# if it goes away.
#
# Copyright © 2000-2005 Jamie Zawinski <jwz@dnalounge.com>.
#
# Permission to use, copy, modify, distribute, and sell this software and its
# documentation for any purpose is hereby granted without fee, provided that
# the above copyright notice appear in all copies and that both that
# copyright notice and this permission notice appear in supporting
# documentation.  No representations are made about the suitability of this
# software for any purpose.  It is provided "as is" without express or 
# implied warranty.
#
# Created: 16-Jul-2000

if [ $# != 0 ]; then
  echo "usage: $0"
  echo "   you probably meant /etc/rc.d/init.d/realprod-nanny $@" >&2
  exit 1
fi


PATH=/home/jwz/src/realproducer:$PATH
export PATH

progname=realprod-nanny

delay=2
delay2=5
initd=/etc/rc.d/init.d/realprod
#ping_host=www.groovefactory.com
#ping_host=www.layer42.net
#ping_host=166.88.255.37
#ping_host=209.237.228.51
#ping_host=63.251.54.43
#url=rtsp://bigstream.groovefactory.com:554/encoder/groovefactory/dnalounge/live.rm
#url=rtsp://sfr1.streams.groovefactory.com:554/encoder/groovefactory/dnalounge/live.rm
url=rtsp://svr1.streams.groovefactory.com:554/encoder/groovefactory/dnalounge/live.rm
#url2=rtsp://bigstream.groovefactory.com:554/encoder/groovefactory/dnalounge/liveaudio.rm


pingable() {
  if ( ping -q -n -c 1 $1 >/dev/null ); then
    return 0
  else
    return 1
  fi
}

check_once() {

#  if ! pingable $ping_host ; then
#    echo ''
#    echo "$ping_host unpingable!  stopping realproducer and waiting..." >&2
#    $initd stop
#
#    while ! pingable $ping_host; do
#      sleep $delay2
#    done
#
#    echo "$ping_host pingable again.  restarting realproducer..." >&2
#    $initd start
#
#  elif ! rtsp-ping $url ; then
   if ! rtsp-ping $url ; then

    echo "$url not found!  restarting realproducer..." >&2
    $initd restart

#  elif ! rtsp-ping $url2 ; then
#
#    echo "$url2 not found!  restarting realproducer..." >&2
#    $initd restart
#
  fi

  sleep $delay
}


check_loop() {
  while true; do
    check_once
  done
}

# log all stdout/stderr text to syslog
log_lines() {
  while read line ; do
    logger -st "$progname" " $line"
  done
}

echo "started at `date`" | log_lines
check_loop 2>&1 | log_lines

exit 0