IPC

Code: Alles auswählen

#!/bin/bash
#
# Prueft anhand myip.ch oder checkip.dyndns.org die Internet IP und
# verschickt ne Email sobald sich diese aendert...
#
# Benoetigt: apt-get install sendEmail
#
# v0.4
### CONFIG - START

# Maileinstellung -> einkommentiern ODER ueber " ipc cfg " einstellen
#SMTPFROM="`hostname`@fqdn.net"
#SMTPTO='admin@fqdn.net'
#SMTPSERVER='mail.fqdn.net'
#SMTPUSER=''
#SMTPPASS=''

# Zeit in Sekunden zwischen den Abfragen
EVERY="300" 

### CONFIG - END


# -------------------------------------------------------------- #
# >>> >> >  DO NOT MESS WiTH ANYTHiNG BELOW THiS LiNE!  < << <<< #
# -------------------------------------------------------------- #

[ -z "$SMTPSERVER" ] && source /var/emu/conf/ipc.cfg

CHECKIPURL["myip"]="http://www.myip.ch/"
CHECKIPURL["dyndns"]="http://checkip.dyndns.org/"
srcn=$(basename $0)
IPFILE=/tmp/.$srcn
CHKURLc=0

if [ ! -f /usr/bin/sendEmail ] ; then
	echo -e "\033[1;31mMailbenachrichtigung wurde aktiviert, jedoch ist sendEmail nicht installiert!\033[0m"
	echo ""
	exit 1
fi

get_CURRENTIP() {
	OK=0
	for i in ${!CHECKIPURL[*]}; do
		[ "$OK" = "1" ] && break
		wget -q --timeout=10 -O ${IPFILE}_currentip $CHECKIPURL[$i]
		if [ "$i" == "myip" ]; then
			CURRENTIP=$(cat ${IPFILE}_currentip | grep "IP Address" | cut -d ' ' -f4)
		else
			CURRENTIP=$(cat ${IPFILE}_currentip | cut -d ' ' -f 6 | cut -d '<' -f 1)
		fi
		if [ -z "$CURRENTIP" -o "$CURRENTIP" = " *" -o "$CURRENTIP" = "*1.0 *" ]; then
			[ ! -z "$1" ] && echo "Hmm... $CHECKIPURL seems to be down?!"
		else
			OK=1
		fi
	done
	[ "$OK" = "0" ] && echo "Error: Cant get current ip!" && CURRENTIP=0
	#rm -f ${IPFILE}_currentip
}

save_CURRENTIP() {
	[ -z "$CURRENTIP" ] && get_CURRENTIP
	echo $CURRENTIP > $IPFILE
}

get_LASTIP() {
	if [ -f "$IPFILE" ]; then
		LASTIP=$(cat $IPFILE)
	else
		LASTIP=0
	fi
}

check_interval() {
	echo $(pidof -x $0) >/tmp/.pid.$srcn
	save_CURRENTIP
	while true; do
		get_CURRENTIP
		get_LASTIP
		if [ "$LASTIP" != "$CURRENTIP" ]; then
			send_Email
			save_CURRENTIP
		fi
		sleep $EVERY
	done
}

send_Email() {
	SUBJECT="IPC CS-Server IP change"
	echo "`hostname -f` hat sich neu eingewaehlt und eine neue IP erhalten" >/tmp/mail
	echo "" >>/tmp/mail
	echo "Last IP: $LASTIP" >>/tmp/mail
	echo "Current IP: $CURRENTIP" >>/tmp/mail
	echo "" >>/tmp/mail
	sed -e 's/$/\r/' /tmp/mail >/tmp/mail.txt
	sendEmail -f $SMTPFROM -t $SMTPTO -u "$SUBJECT" -o message-file=/tmp/mail.txt -s $SMTPSERVER\
	 -xu $SMTPUSER -xp $SMTPPASS >/dev/null 2>&1
	rm -f /tmp/mail && rm -f /tmp/mail.txt >/dev/null 2>&1
}

kill_script() {
	counter="5"
	PID=$(cat /tmp/.pid.$srcn)
	if [ -z "$PID" ]; then
		PID=$(pidof -x $srcn)
	fi
	if [ ! -z "$PID" ]; then
		PID="$PID `pidof -x sleep`"
		kill -9 $PID >/dev/null 2>&1
		echo "${1}ed: $PID"
	else
		echo "Nothing to $1!"
	fi
	sleep 5
	if [ ! -z `pidof -x $srcn` ]; then
		while [ $counter -gt 0 ]; do
			counter=$(expr $counter - 1)
			echo "...Retrying to $1 script! (retrys left: $counter , PID: $PID)"
			kill -9 $PID >/dev/null 2>&1
			PID=$(pidof -x $srcn)
			PID="$PID `pidof -x sleep`"
		done
	fi
	echo "Should be killed..."
	rm -f /tmp/.pid.$srcn
}

case "$1" in
	"")
		check_interval
	;;
	[aA][uU][tT][oO])
		$0 &
	;;
	[sS][tT][oO][pP]|[kK][iI][lL][lL])
		kill_script $1
	;;
	[nN][oO][wW])
		get_CURRENTIP
		get_LASTIP
		echo "LASTIP: $LASTIP - CURRENTIP: $CURRENTIP"
		echo "Verschicke Email..."
		send_Email
		echo "done"
		save_CURRENTIP
	;;
	[hH][eE][lL][pP]|[hH][iI][lL][fF][eE]|?)
		echo "Usage: $0 [now|auto|kill|help]"
		echo "$0 now -> Sofortiges abfragen und sendern der Email"
		echo "$0 auto -> Ueberprueft alle $EVERY Sekunden"
		echo "$0 kill -> Script wird beendet"
		echo "$0 help -> Zeigt diese Hilfr..."
	;;
	*)
		echo "Usage: $0 [now|auto|kill|help]"
	;;
esac

exit 0