#!/bin/bash
SIMPLE=0
while getopts i:r:input:rule:s:simple option
do
	case "${option}"
		in
		i) INPUT_FILE=${OPTARG};;
		input) INPUT_FILE=${OPTARG};;
		r) RULE_FILE=${OPTARG};;
		rule) RULE_FILE=$OPTARG;;
		s) SIMPLE=1;;
		simple) SIMPLE=1;;
	esac
done

# validate input & print guide
#echo $INPUT_FILE
#echo $RULE_FILE

IOCS_IN_LINE=$(cat "$INPUT_FILE" | tr "\n" " ")
IOCS_ARRAY=($IOCS_IN_LINE)
IOCS_ARRAY_LEN=${#IOCS_ARRAY[@]}
#echo ${IOCS_ARRAY[*]}
#echo "Number of IoCs: $IOCS_ARRAY_LEN"
for IOC in "${IOCS_ARRAY[@]}"; do
	# strip space
	IOC=$(echo $IOC | xargs)
	grep -i "$IOC" $RULE_FILE >/dev/null 2>&1
	RESULT=$?
	if [ ! $RESULT -eq 0 ]; then
		echo "$IOC"
	fi
done