this is tuto1

ping-checker.sh

@@ -0,0 +1,48 @@
+#!/bin/sh
+
+[ -n "$SECRET_KEY" ] || { echo "Please define SECRET_KEY"; exit 1; }
+
+CNT=$(curl -s https://adlin.nemunai.re/api/ips)
+
+
+# First, generate static ARP table
+
+echo "${CNT}" | jq -r '. | keys | .[]' - | while read sid
+do
+    MAC=$(echo "${CNT}" | jq -r '.["'$sid'"].mac' -)
+    if [ -n "$MAC" ]
+    then
+	echo "${CNT}" | jq -r '.["'$sid'"].vlan0,.["'$sid'"].vlan7' - | while read IP
+	do
+	    arp -s "${IP}" "${MAC}"
+	done
+    fi
+done
+
+
+# Then, perform checks
+
+echo "${CNT}" | jq -r '. | keys | .[]' - | while read sid
+do
+    IP=$(echo "${CNT}" | jq -r '.["'$sid'"].vlan0' -)
+    if [ -n "${IP}" ]
+    then
+	case $(($sid % 5)) in
+	    1)
+		PAT=baaaaaad;;
+	    2)
+		PAT=baadfood;;
+	    3)
+		PAT=baddcafe;;
+	    4)
+		PAT=cafebabe;;
+	    *)
+		PAT=deadbeef;;
+	esac
+
+	arping -I br-ext -c 1 -w 1 "${IP}" && {
+	    ping -c 1 -w 1 -p "${PAT}" "${IP}" &
+	    curl -k -X POST -d '{"token": "'${SECRET_KEY}'"}' "https://172.23.200.1/api/students/$sid/pong"
+	}
+    fi
+done