Initial version

auto_up_script/auto_up_script.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+timeout=3               # delay between checks
+iface="wlan0"           # which network interface to bring up/down
+pingip='8.8.8.8'        # what to ping
+isdown=-1               # indicate whether the interface is up(0) or down(1)
+                        # starts in "unknown" (-1) state
+while true; do
+    if ping -q -c 2 "$pingip"; then       # if ping is succeeds bring iface up
+        if [ "$isdown" -ne 0 ]; then      # if not already up
+            ifconfig "$iface" up && isdown=0
+            printf ":: iface brought up: %s\n" "$iface"
+        fi
+    elif [ "$isdown" -ne 1 ]; then        # if ping failed, bring iface down, if not already down
+        ifconfig "$iface" down && isdown=1
+        printf ":: iface brought down: %s\n" "$iface"
+    fi
+    sleep "$timeout"
+done

netlog.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+START_DATE=`date`
+
+mapfile -t ORIGINAL_NETSTATES < <(ip addr | grep " state " | sed -e "s/.* \(.*\):.*state \(.*\) group.*/\1 \2/")
+
+while true; do
+	sleep 5
+	mapfile -t NETSTATES < <(ip addr | grep " state " | sed -e "s/.* \(.*\):.*state \(.*\) group.*/\1 \2/")
+
+	for (( i=0; i<${#ORIGINAL_NETSTATES[@]}; ++i)); do
+		for (( j=0; j<${#NETSTATES[@]}; ++j)); do
+			OLDSTATE=(`echo ${ORIGINAL_NETSTATES[$i]}`)
+			NEOSTATE=(`echo ${NETSTATES[$j]}`)
+
+			if [ ${OLDSTATE[0]} = ${NEOSTATE[0]} ]; then
+				if [ ${OLDSTATE[1]} = "UP" ]; then
+					if [ ${NEOSTATE[1]} != "UP" ]; then
+						# Alert
+						echo "ALERT"
+						zenity --error --text='Egy hálózati device leállt!'
+					fi
+				fi
+				echo "Original: ${ORIGINAL_NETSTATES[$i]} Current: ${NETSTATES[$j]}"
+			fi
+		done
+	done
+done