Initial commit.

ppp/check-vpn

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+# check if cron is still running; if it is, then just exit; otherwise execute cron job
+#[[ -f /tmp/*.vpncron ]] && exit 1
+
+# create a temp file with suffix
+TEMP_FILE=`mktemp --suffix .vpncron`
+touch $TEMP_FILE
+
+EXTIF="ppp0" # external interface, may be empty
+IFCONFIG=/sbin/ifconfig
+AWK=/bin/awk
+
+HOSTS="sg3.gazduire.ro vg11.gazduire.ro rg5.gazduire.ro dbv5.gazduire.ro"
+# no ping request
+COUNT=1
+
+for server in $HOSTS
+do
+  count=$(ping -c $COUNT $server | grep 'received' | awk -F',' '{ print $2 }' | awk '{ print $1 }')
+  if [ $count -eq 0 ]; then
+    # 100% failed
+    echo "Host : $server is down (ping failed) at $(date)"
+    /etc/init.d/vpn-gzd stop
+    sleep 1
+    /etc/init.d/vpn-gzd start
+  fi
+done
+
+# get the external IP address - it returns empty string if it is not up
+if [ -n "$EXTIF" ]; then
+EXTIP=`$IFCONFIG | grep inet | grep -v 127.0.0.1 | grep -v 10.208 | grep -v inet6 | $AWK '{print $2}'`
+fi
+#echo " External IP: $EXTIP"
+
+if [ -z "$EXTIP" ]; then
+	echo "Starting VPN tunnel.."
+	/etc/init.d/vpn-gzd stop
+	sleep 1
+	/etc/init.d/vpn-gzd start
+else
+	echo "VPN tunnel is connected"
+fi
+
+# delete cron temporary file
+rm -f $TEMP_FILE