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[IMPROVED] hexroute - Nuevo utilitario que traduce direcciones IP a formato para dhcpd

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Mauro Rosero P. 2024-12-09 10:32:43 -05:00
parent 821ce472a4
commit 141ed2b0d3
Signed by: mrosero
GPG key ID: 83BD2A5F674B7E26
1 changed files with 100 additions and 0 deletions
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bin/hexroute Executable file
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@ -0,0 +1,100 @@
#!/bin/bash
######################################################################
#
# hexroute - Convert human readable routes to dhcpd static route info
# for Windows(r) clients
#
# Copyright (c) 2005-2015 Karl McMurdo
#
# Freely distributable, but please keep header intact
#
# Update: May 10, 2007 Change Max Quad to 255
#
######################################################################
function split_ipaddr() {
[ ${1:-X} = X -o "${1}" != ${1//[^.0-9]/} -o ${1:-X} = X \
-o "${1//[0-9]/}" != "..." ] && return 1
local rval=0
local t
local T[1]
local T[2]
local T[3]
local T[4]
T[1]=${1%%.*}
T[2]=${1#*.}
T[2]=${T[2]%%.*}
T[3]=${1#*.*.}
T[3]=${T[3]%%.*}
T[4]=${1#*.*.*.}
[ ${T[1]} = 0 ] && rval=1
for t in 1 2 3 4
do
[ ${T[${t}]:-999} -gt 255 ] && rval=1
eval "${2}[${t}]=${T[${t}]}"
done
return ${rval}
}
USAGE='echo -e "Usage: ${0//*\/} [-v|-h] target/bits [gw] gateway [target/bits [gw] gateway ...]\n\n\tie: ${0} 172.16.0.0/16 gw 192.168.1.1\n" && exit 1'
INFO="HexRoute 1.0 Copyright (c) 2015 Karl McMurdo
Converts human readable route information to a dhcpd hex string
-v Once prints full dhcpd.conf line for route(s)
Twice also prints option definiton lines for dhcpd.conf
-h Prints this message
"
DHCPHDR="# New Option Type for Windows Client Static Routes
option new-static-routes code 249 = string;"
DHCPS="option new-static-routes "
DHCPE=";"
BADTARG='echo -e "Invalid target network: ${1}" && exit 2'
BADBITS='echo -e "Invalid Network bit value: ${1}" && exit 3'
BADGW='echo -e "Invalid Gateway: ${2}" && exit 4'
VERBOSE=false
EXTRAVERBOSE=false
while [ "${1:0:1}" = "-" ]
do
if [ "${1}" = "-v" ]
then
$VERBOSE && EXTRAVERBOSE=true
VERBOSE=true
elif [ "${1}" = "-h" ]
then
echo "${INFO}"
eval "${USAGE}"
else
eval "${USAGE}"
fi
shift
done
[ ${#} -lt 2 ] && eval "${USAGE}"
OUT=""
while [ ${#} -ge 2 ]
do
split_ipaddr ${1/\/*/} TARG || eval "${BADTARG}"
BITS=${1/*\//}
shift
[ ${BITS:-X} = X -o "${BITS}" != ${BITS//[^0-9]/} ] && eval "${BADBITS}"
[ ${BITS} -gt 32 -o ${BITS} -lt 1 ] && eval "${BADBITS}"
[ ${1:-X} = gw ] && shift
split_ipaddr ${1:-X} GW || eval "${BADGW}"
shift
OUT=${OUT}$( printf ":%02x:%02x" ${BITS} ${TARG[1]} )
[ ${BITS} -gt 8 ] && OUT=${OUT}$( printf ":%02x" ${TARG[2]} )
[ ${BITS} -gt 16 ] && OUT=${OUT}$( printf ":%02x" ${TARG[3]} )
[ ${BITS} -gt 24 ] && OUT=${OUT}$( printf ":%02x" ${TARG[4]} )
OUT=${OUT}$( printf ":%02x:%02x:%02x:%02x" ${GW[@]} )
done
$EXTRAVERBOSE && echo "${DHCPHDR}"
if $VERBOSE
then
echo ${DHCPS}${OUT/:/}${DHCPE}
else
echo ${OUT/:/}
fi