#!/bin/bash
# Hangup channels whose duration exceeds a timeout
# It's also possible to handle only a specific peer's channels

VERBOSE=0
DEBUG=0
PEER=""
HANGUP_TIMEOUT=""

function usage() {
	[ -n "$1" ] && echo "$1" && echo
	echo "Usage : $0 [-cX] [-wX] [-d] [peer]"
	echo "	-h		Show this help message"
	echo "	-v		Enable verbose mode"
	echo "	-d		Enable debug mode"
	echo "	-t[X]		Specify hangup timeout (in s)"
	echo "	[peer]		Specify the peer name"
}

function log() {
	case "$1" in
		INFO)
			[ $VERBOSE -ne 1 -a $DEBUG -ne 1 ] && return
		;;
		DEBUG)
			[ $DEBUG -ne 1 ] && return
		;;
	esac
	echo -e "$( date "+%Y/%m/%d %H:%M:%S" ) - $2"
}

# Parse arguments
for arg in $@
do
	if [ $( echo $arg|egrep -c '^-[tvdh][0-9]*$' ) -gt 0 ]
	then
		a=$( echo $arg|sed 's/^-\([tvdh]\).*$/\1/' )
		v=$( echo $arg|sed 's/^-[tvdh]//' )
		case $a in
			t)
				HANGUP_TIMEOUT=$v
			;;
			v)
				VERBOSE=1
			;;
			d)
				DEBUG=1
			;;
			h)
				usage
				exit 0;
			;;
		esac
	elif [ -z "$PEER" ]
	then
		PEER="$arg"
	else
		echo "Only one peer can be specified (or invalid '$arg' parameter)"
	fi
done

[ -z "$HANGUP_TIMEOUT" ] && usage "You must specify the hangup timeout using -t parameter." && exit 1

if [ -n "$PEER" ]
then
	log DEBUG "Specified peer name : $PEER"
	CHANNELS=$( asterisk -rx 'core show channels concise'|grep -E "^$PEER-[0-9a-f]+!" )
	log DEBUG "Channels :\n$CHANNELS"
	[ -z "$CHANNELS" ] && log INFO "No current channels found for this peer" && exit 0
else
	CHANNELS=$( asterisk -rx 'core show channels concise' )
	log DEBUG "Channels :\n$CHANNELS"
	[ -z "$CHANNELS" ] && log INFO "No current channels found" && exit 0
fi

total=0
count=0
IFS="
"
for line in $CHANNELS
do
	let total=total+1
	chan=$( echo "$line"|cut -d'!' -f 1 )
	duration=$( echo "$line"|cut -d'!' -f 12 )
	log DEBUG "Channel '$chan' duration : ${duration}s"
	[ $duration -le $HANGUP_TIMEOUT ] && log DEBUG "This channel duration do not exceed the timeout." && continue
	log INFO "Channel '$chan' duration is ${duration}s : hangup this channel"
	asterisk -rx "hangup request $chan"
	let count=count+1
done
log INFO "$count/$total channels hangup"