#!/bin/sh
##############################################################################
## Darkice Watchdog
##
## This script checks a darkice live stream on a local or remote icecast 
## server and restart darkice if the stream is down.
##
## Niels Dettenbach <nd@syndicat.com>
## (c) 2009 GPL
## v0.3
##
##
##
## prerequisites:
## --------------
##
## - darkice (http://darkice.org/)
##
## - curl (http://curl.haxx.se/)
##
##
## installation:
## -------------
##
## - adjust settings
##
## - make it executable with:
##   chmod +x icecast.watchdog
##
## - install darkice init script if not there:
##   cp rc.darkice /etc/initd./darkice
##
## - you may adjust #restart darkice command to your own if required
##
## - add it to /etc/crontab - i.e.:
## 
## */5 * * * *     root	/full/path/to/icecast.watchdog > /dev/null
##
###############################################################################


### settings

# icecast status URL
URL='http://stream.server.tld:8000/status.xsl'

# filename of stream
TEXTTOSEARCH='yourstream.mp3'

# timeout
TIMEOUT=10

# sleep within restart
SLEEP=5

# log file
LOGFILE=/var/log/darkice_watchdog

# curl binary
CURL=`which curl`
#CURL=/usr/bin/curl

## endof settings



DATE=$(date)

CUR=$($CURL --connect-timeout ${TIMEOUT} --max-time ${TIMEOUT} -3 --silent ${URL}) 
TEST=$(echo $CUR | grep ${TEXTTOSEARCH}) 
# If not zero, server is OK 
if [[ ! $TEST == "" ]]; then 
	echo $DATE "- stream is OK" >> $LOGFILE; 
else
	echo $DATE "- stream down - restart" >> $LOGFILE;
	#restart darkice
	/etc/init.d/darkice stop
	sleep $SLEEP
	/etc/init.d/darkice start
fi