USB canary includes details of the device which was connected or disconnected

src/freedombone-usb-canary

@@ -33,9 +33,19 @@ if [ ! -f /tmp/.upgrading ]; then
     if [ "$UPTIME" -gt 240 ]; then
         ADMIN_USER=$(grep 'Admin user' /root/${PROJECT_NAME}-completed.txt | awk -F ':' '{print $2}')
         MY_EMAIL_ADDRESS=${ADMIN_USER}@$(cat /etc/hostname)
-        echo "USB device connected on ${DEVPATH}" | mail -s "${PROJECT_NAME} USB canary" "${MY_EMAIL_ADDRESS}"
+
+        # Which devices have changed?
+        devices_changed=
+        if [ -f /tmp/.usb_devices ]; then
+            lsusb -v > /tmp/.curr_usb_devices
+            devices_changed=$(diff /tmp/.curr_usb_devices /tmp/.usb_devices)
+            rm /tmp/.curr_usb_devices
+        fi
+
+        echo -e "USB device connected on ${DEVPATH}\\n\\n${devices_changed}" | mail -s "${PROJECT_NAME} USB canary" "${MY_EMAIL_ADDRESS}"
         echo "${ACTION}" > /tmp/usb-canary
         echo "${MY_EMAIL_ADDRESS}" >> /tmp/usb-canary
         date >> /tmp/usb-canary
     fi
 fi
+lsusb -v > /tmp/.usb_devices