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#!/usr/bin/env bash
hs="$1"
len=${#hs}
echo "# ciphers: $((len/4))"
mapfile="etc/cipher-mapping.txt"
[ -s $mapfile ] || mapfile="../$mapfile"
[ -s $mapfile ] || exit 255
cip=""
first=true
for ((i=0; i<len ; i+=4)); do
printf "%02d" "$i"
echo -n ": ${hs:$i:4}"
grepstr="0x${hs:$i:2},0x${hs:$((i+2)):2}"
echo -n " --> $grepstr --> "
cip=$(grep -i -E "^ *${grepstr}" $mapfile | awk '{ print $3 }')
if [[ $grepstr == 0x00,0xff ]]; then
echo TLS_EMPTY_RENEGOTIATION_INFO_SCSV
else
echo $cip
fi
if "$first"; then
ciphers="$cip"
first=false
else
ciphers="$ciphers:$cip"
fi
done
echo
# remove leading : because of GREASE, and trailing because of TLS_EMPTY_RENEGOTIATION_INFO_SCSV
ciphers="${ciphers%:}"
echo ${ciphers#:}
# vim:ts=5:sw=5:expandtab
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