khgenmacs

#!/bin/bash
#set -x

excludepat="ibm|cisco|force|myricom|broadcom|xensource|vmware|nortel|xerox"
includepat="university"

function printmacstruct 
{
    local mac=$1
    local desc=$2

    oc1=${mac%%-*}
    oc2=${mac#*-}
    oc3=${oc2#*-}
    oc2=${oc2%%-*}

    echo "     { 0x$oc1, 0x$oc2, 0x$oc3 }, /* $desc */"
}

num=$1

if [[ -z $num ]]
then
   num=256
fi

ouiurl=http://standards.ieee.org/regauth/oui/oui.txt

all="$(wget -q -O - $ouiurl | grep '(hex)')"
#all="$(cat ouitest.txt | grep '(hex)')"
include=$(echo "$all" | egrep -i "$includepat")
rest=$(echo "$all" | egrep -i -v "$excludepat|$includepat")

i=0
while read m junk d
do
  usefirstaddr[$i]="$m"
  usefirstdesc[$i]="$d"
  ((i++))
done <<EOF
$include
EOF
usefirstcnt=$i

i=0
while read m junk d
do
  addrs[$i]="$m"
  desc[$i]="$d"
  ((i++))
done <<EOF
$rest
EOF
restcnt=$i

echo "
/* AUTO GENED BY scripts/$(basename $0) */
#ifndef _KH_MACS_H_
#define _KH_MACS_H_

/*
 * (C) Copyright 2007
 * Project KittyHawk
 * IBM Research
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#define KH_NUM_MACS $num

struct macprefix {
      unsigned char oc0;
      unsigned char oc1;
      unsigned char oc2;
} khmacs[KH_NUM_MACS]={"
i=0
while (($i<$num))
do
  if (($i < $usefirstcnt))
  then
    printmacstruct "${usefirstaddr[$i]}" "${usefirstdesc[$i]}"
    ((i++))
  else
     index=$RANDOM
     (( index %= $restcnt ))
     if [[ -n "${addrs[$index]}" ]]
     then
        printmacstruct "${addrs[$index]}" "${desc[$index]}"
        addrs[$i]=""
        desc[$i]=""
        (( i++ ))
     fi
  fi
done
echo "
};
#endif
"