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use start-stop-daemon to avoid hanging web page if ez-ipupdate tool is blocking

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This commit is contained in:
Daniel Steglich 2015-01-15 21:30:25 +00:00
parent 4ca76b9c76
commit 411abfe954
1 changed files with 21 additions and 17 deletions
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38
actions/dynamicdns
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@ -26,6 +26,7 @@ STATUSFILE="${CFGDIR}${TOOLNAME}.status"
LASTUPDATE="${CFGDIR}/last-update"
HELPERCFG="${CFGDIR}${TOOLNAME}-plinth.cfg"
CRONJOB="/etc/cron.d/${TOOLNAME}"
PIDFILE="/var/run/ez-ipupdate.pid"
doReadCFG()
{
@ -104,7 +105,6 @@ doWriteCFG()
echo "user=${user}:${pass}" >> $FILE
echo "service-type=gnudip" >> $FILE
echo "retrys=5" >> $FILE
echo "execute=$0 success" >> $FILE
echo "wildcard" >> $FILE
#check if we are behind a NAT Router
@ -124,6 +124,7 @@ doWriteCFG()
echo "interface=$DEFAULT" >> $FILE
#if this line is added to config file, ez-ipupdate will be launched on startup via init.d
echo "daemon" >> $FILE
echo "execute=$0 success" >> $FILE
fi
fi
}
@ -166,42 +167,45 @@ case $cmd in
doReadCFG
OLDIP=`cat $IPFILE`
doGetWANIP
echo $WANIP > $IPFILE
[ -f $CFG_disabled ] && FILE=$CFG_disabled
[ -f $CFG ] && FILE=$CFG
RESULT=0
cat $FILE |grep -v execute > ${FILE}.tmp
mv ${FILE}.tmp ${FILE}
echo "execute=$0 success ${WANIP}" >> $FILE
#if we know our WAN IP, only update if IP changes
if [ "$OLDIP" != "$WANIP" -a "${WANIP}" != ${NOIP} ];then
${UPDATE_TOOL} -c $FILE
RESULT=$?
[ $RESULT -eq 0 ] && $0 success $WANIP
cat /proc/uptime |awk '{print $1}' |cut -d . -f 1 > $LASTUPDATE
if [ "${OLDIP}" != "${WANIP}" -a "${WANIP}" != ${NOIP} ];then
start-stop-daemon -S -x ${UPDATE_TOOL} -m -p ${PIDFILE} -- -c $FILE
fi
#if we don't know our WAN IP do a blind update once a hour
if [ "${WANIP}" = ${NOIP} ];then
UPTIME=`cat /proc/uptime |cut -d . -f 1`
LAST=0
[ -f $LASTUPDATE ] && LAST=`cat $LASTUPDATE`
[ -f ${LASTUPDATE} ] && LAST=`cat $LASTUPDATE`
DIFF=`expr $UPTIME - $LAST`
if [ $DIFF -gt $UPDATEMINUTESUNKNOWN ];then
${UPDATE_TOOL} -c $FILE
RESULT=$?
[ $RESULT -eq 0 ] && $0 success $WANIP
cat /proc/uptime |awk '{print $1}' |cut -d . -f 1> $LASTUPDATE
start-stop-daemon -S -x ${UPDATE_TOOL} -m -p ${PIDFILE} -- -c $FILE
fi
fi
if [ $RESULT -ne 0 ];then
$0 failed
fi
;;
stop)
rm $CRONJOB 2> /dev/null
/etc/init.d/${TOOLNAME} stop
kill $(cat ${PIDFILE}) 2> /dev/null
mv $CFG $CFG_disabled
;;
success)
DATE=`date`
echo "last update done ($DATE)" > $STATUSFILE
echo $1 > $IPFILE
cat /proc/uptime |awk '{print $1}' |cut -d . -f 1 > $LASTUPDATE
#if called from cronjob, the current IP is given as parameter
if [ $# -eq 1 ];then
echo $1 > $IPFILE
else
#if called from ez-ipupdate daemon, no WAN IP is given as parameter
doGetWANIP
echo $WANIP > $IPFILE
fi
;;
failed)
DATE=`date`
@ -211,7 +215,7 @@ case $cmd in
if [ -f $STATUSFILE ];then
cat $STATUSFILE
else
echo "no update recorded since last config change"
echo "no successful update recorded since last config change"
fi
;;
status)