net/mwan3: add clean_up trap function for SIGINT SIGTERM

[feed/packages.git] / net / mwan3 / files / usr / sbin / mwan3track

diff --git a/net/mwan3/files/usr/sbin/mwan3track b/net/mwan3/files/usr/sbin/mwan3track
index e5c61b970e71bf4334f4e3c0cca5533eb6ff0cba..6bfdaa0a71ceb19f2de07b0cd6726a4210a2feea 100755 (executable)
--- a/net/mwan3/files/usr/sbin/mwan3track
+++ b/net/mwan3/files/usr/sbin/mwan3track
@@ -1,65 +1,80 @@
 #!/bin/sh
 
-[ -z "$10" ] && echo "Error: should not be started manually" && exit 0
-
-if [ -e /var/run/mwan3track-$1.pid ] ; then
-       kill $(cat /var/run/mwan3track-$1.pid) &> /dev/null
-       rm /var/run/mwan3track-$1.pid &> /dev/null
-fi
-
-echo "$$" > /var/run/mwan3track-$1.pid
-
-score=$(($7+$8))
-track_ips=$(echo $* | cut -d ' ' -f 10-99)
-host_up_count=0
-lost=0
-
-while true; do
-
-       for track_ip in $track_ips; do
-               ping -I $2 -c $4 -W $5 -s $9 -q $track_ip &> /dev/null
-               if [ $? -eq 0 ]; then
-                       let host_up_count++
+LOG="/usr/bin/logger -t $(basename "$0")[$$] -p"
+INTERFACE=""
+
+clean_up() {
+       $LOG notice "Stopping mwan3track for interface \"${INTERFACE}\""
+       rm "/var/run/mwan3track-${INTERFACE}.pid" &> /dev/null
+       exit 0
+}
+
+main() {
+
+       [ -z "$12" ] && echo "Error: should not be started manually" && exit 0
+
+       INTERFACE=$1
+       echo "$$" > /var/run/mwan3track-$1.pid
+       trap clean_up SIGINT SIGTERM
+
+       local score=$(($7+$8))
+       local track_ips=$(echo $* | cut -d ' ' -f 12-99)
+       local host_up_count=0
+       local lost=0
+       local sleep_time=0
+
+       while true; do
+
+               sleep_time=$6
+
+               for track_ip in $track_ips; do
+                       ping -I $2 -c $4 -W $5 -s $9 -q $track_ip &> /dev/null
+                       if [ $? -eq 0 ]; then
+                               let host_up_count++
+                       else
+                               let lost++
+                       fi
+               done
+
+               if [ $host_up_count -lt $3 ]; then
+                       let score--
+
+                       if [ $score -lt $8 ]; then
+                               score=0
+                       else
+                               sleep_time=$10
+                       fi
+
+                       if [ $score -eq $8 ]; then
+                               $LOG notice "Interface $1 ($2) is offline"
+                               env -i ACTION=ifdown INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
+                               score=0
+                       fi
                else
-                       let lost++
-               fi
-       done
-
-       if [ $host_up_count -lt $3 ]; then
-               let score--
-
-               if [ $score -lt $8 ]; then score=0 ; fi
-               if [ $score -eq $8 ]; then
-
-                       logger -t mwan3track -p notice "Interface $1 ($2) is offline"
-                       env -i ACTION=ifdown INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
-                       score=0
-
+                       if [ $score -lt $(($7+$8)) ] && [ $lost -gt 0 ]; then
+                               $LOG info "Lost $(($lost*$4)) ping(s) on interface $1 ($2)"
+                       fi
+
+                       let score++
+                       lost=0
+
+                       if [ $score -gt $8 ]; then
+                               score=$(($7+$8))
+                       elif [ $score -le $8 ]; then
+                               sleep_time=$11
+                       fi
+
+                       if [ $score -eq $8 ]; then
+                               $LOG notice "Interface $1 ($2) is online"
+                               env -i ACTION=ifup INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
+                               rm /var/run/mwan3track-$1.pid
+                               exit 0
+                       fi
                fi
 
-       else
-
-               if [ $score -lt $(($7+$8)) ] && [ $lost -gt 0 ]; then
-
-                       logger -t mwan3track -p info "Lost $(($lost*$4)) ping(s) on interface $1 ($2)"
-
-               fi
-
-               let score++
-               lost=0
-
-               if [ $score -gt $8 ]; then score=$(($7+$8)); fi
-               if [ $score -eq $8 ]; then
-
-                       logger -t mwan3track -p notice "Interface $1 ($2) is online"
-                       env -i ACTION=ifup INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
-                       rm /var/run/mwan3track-$1.pid
-                       exit 0
-               fi
-       fi
-
-       host_up_count=0
-       sleep $6
-done
+               host_up_count=0
+               sleep $sleep_time
+       done
+}
 
-exit 1
+main "$@"