# # Chet Ramey # # Copyright 2002 Chester Ramey # # 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, or (at your option) # any later version. # # TThis 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. # # inet2hex - Internet address conversion, dotted-decimal to hex # inet2hex () { local IFS IFS=. set -- $1 if (( $# != 4 )); then echo "inet2hex: incorrect input format: $1" >&2 echo "inet2hex: usage: inet2hex XX.XX.XX.XX" >&2 return 2 fi printf "0x%02x%02x%02x%02x\n" $1 $2 $3 $4 } # # hex2inet - Internet address conversion, hex to dotted-decimal # hex2inet () { local x1 x2 x3 x4 local rev OPTIND=1 while getopts "r" o do case "$o" in r) rev=true;; *) echo "hex2inet: usage: hex2inet [-r] [0x]XXXXXXXX" >&2 ; exit 2;; esac done shift $(( $OPTIND - 1 )) case "$1" in 0x*) h=${1#??} ;; *) h=$1 ;; esac if (( ${#h} != 8 )); then echo "hex2inet: $h not in inet format" >&2 echo "hex2inet: usage: hex2inet [0x]XXXXXXXX" >&2 return 2 fi x1=$(( 0x${h:0:2} )) x2=$(( 0x${h:2:2} )) x3=$(( 0x${h:4:2} )) x4=$(( 0x${h:6:2} )) if [ -z "$rev" ] ; then printf "%d.%d.%d.%d\n" $x1 $x2 $x3 $x4 else printf "%d.%d.%d.%d\n" $x4 $x3 $x2 $x1 fi return 0 }