#! /bin/sh
# Script to test the "ping-of-death" ("POD") functionality.
# This script is run on a machine that has the POD feature patched
# into the kernel and has the tools installed in the machine. 
#
# The process is:
#   * build the kernel with the pod patch
#   * install the kernel on a machine
#   * reboot to run that kernel
#   * on the machine with that kernel, run this script
#   * if you answer "y" to the question, you will reboot that machine
#
# This script was built from the pl-pod* script files.  It has no
# dependency on them other than it expects /usr/local/planetlab/bin/pl-poddoit
# to exist to send the POD packet.
# -----------------------------------------------------------------
# $Header: /shareddata/CVS/planetlab/admin/ipod/test-pod,v 1.2 2003/01/18 01:52:10 radams Exp $
#
# Copyright (c) 2003 Intel Corporation
# All rights reserved.
# This file is distributed under the terms in the attached INTEL_LICENSE
# file.  If you do not find this file, a copy can be obtained by
# writing to Intel Research Berkeley; Attention: Intel License Inquiry;
# 2150 Shattuck Avenue, suite 1300; Berkeley, CA 94704
# -----------------------------------------------------------------

PLBIN="/usr/local/planetlab/bin"
PLDOIT="$PLBIN/pl-poddoit"

SYSCTL="/sbin/sysctl"

if ! [[ -x $PLDOIT ]] ; then
    echo "CONFIG ERROR: the send POD executable not available at $PLDOIT"
    exit 1
fi

IPODHOSTP=`hostname -i`
IPODMASKP="255.255.255.255"
IPODHASHP=`printf "%04x%04x%04x%04x%04x%04x%04x%04x\n" $RANDOM $RANDOM $RANDOM $RANDOM $RANDOM $RANDOM $RANDOM $RANDOM`

echo "IPODHOST = $IPODHOSTP"
echo "IPODMASK = $IPODMASKP"
echo "IPODKEY = $IPODHASHP"

echo "=== Set the set parameters into the kernel ==="
IPODHOST=`echo $IPODHOSTP | \
    sed -e 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \2 \3 \4/' | \
    awk '{ printf "%d\n", $1*16777216+$2*65536+$3*256+$4 }'`
IPODMASK=`echo $IPODMASKP | \
    sed -e 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \2 \3 \4/' | \
    awk '{ printf "%d\n", $1*16777216+$2*65536+$3*256+$4 }'`
IPODKEY=`echo $IPODHASHP | \
    sed -e 's/\(.*\)/\1/'`
$SYSCTL -w net.ipv4.icmp_ipod_host=$IPODHOST >/dev/null
Success=$?
$SYSCTL -w net.ipv4.icmp_ipod_mask=$IPODMASK >/dev/null
$SYSCTL -w net.ipv4.icmp_ipod_key=$IPODKEY >/dev/null
$SYSCTL -w net.ipv4.icmp_ipod_enabled=1 >/dev/null
if [[ $Success -eq 0 ]] ; then
    echo "SUCCESS setting parameters"
else
    echo "FAILURE to set POD parameters"
    exit 1
fi

echo "=== Try to reset with wrong payload -- this should fail ==="
echo echo "01234567890123456789012345678901" \| $PLDOIT -i - $IPODHOSTP
echo "01234567890123456789012345678901" | $PLDOIT -i - $IPODHOSTP

echo "=== Reset host ==="
echo "THIS NEXT STEP WILL RESET THIS COMPUTER!!!!"
read -p "Enter 'y' if you wish to reset this computer: " REPLY
if [[ x"$REPLY" == "xy" ]] ; then
    echo $IPODHASHP | $PLDOIT -i - $IPODHOSTP
    echo echo $IPODHASHP \| $PLDOIT -i - $IPODHOSTP
else
    echo "Final reset test not performed."
fi