#!/bin/bash

USAGE="usage: $0 <tokenUUID> <cert_file.crt> <key_file.key> "
DIGEST=sha1

if [[ -z $1 ]] ; then
	echo $USAGE
	exit 1
fi
if [[ -z $2 ]] ; then
	echo $USAGE
	exit 2
fi
if [[ -z $2 ]] ; then
	echo $USAGE
	exit 3
fi

TOKEN=$1
CERT=$2
KEY=$3

if [[ ! -f $CERT ]] ; then
	echo "Certificate file $CERT not found"
	exit 4
fi
if [[ ! -f $KEY ]] ; then
	echo "Key file $KEY not found"
	exit 5
fi

SERIAL=`openssl x509 -in $CERT -noout -text \
	| grep -A1 'Serial Number' \
	| tail -1 \
	| tr ':' "\n" \
	| while read B ; do
		printf "\x$B"
	done
	`

RFC=`openssl x509 -in $CERT -noout -text \
	| grep Subject \
	| tr ',' "\n" \
	| grep x500UniqueIdentifier \
	| tr -d ' ' \
	| cut -d '=' -f 2 
	`

NOTAFTER=`openssl x509 -in $CERT -noout -text \
	| grep 'Not After' \
	| cut -d ':' -f 2-999 \
	| sed 's/GMT$//'
	`

FERT=`date -d"$NOTAFTER" +%y%m%d%H%M%SZ`

CO="$TOKEN|$RFC|$SERIAL"
#echo -n $CO > co.debug

SIGNATURE=`echo -n $CO \
	| openssl pkeyutl -sign -inkey $KEY -digest $DIGEST -rawin \
	| base64 -w0
	`
#echo $SIGNATURE > firma.debug

CO_BASE64=`echo -n $CO \
	| base64 -w0`
SIGNATURE_BASE64=`echo -n $SIGNATURE \
	| base64 -w0`
TOKEN=`echo -n "$CO_BASE64#$SIGNATURE_BASE64" \
	| base64 -w0`

echo
echo "-----CADENA ORIGINAL-----"
echo $CO
#echo "-----CADENA ORIGINAL-----"
#echo "===>$CO_BASE64<==="
echo "----------FIRMA----------"
echo $SIGNATURE
echo "----------TOKEN----------"
echo $TOKEN
echo "--------NOT AFTER--------"
echo $FERT
echo "-------------------------"