import re
from pathlib import Path

def find_and_remove_ip_with_cidr(lines):
    cidr_regex = re.compile(r'\b(?:[0-9]{1,3}\.){3}[0-9]{1,3}/[0-9]{1,2}\b')
    return [line for line in lines if not cidr_regex.search(line)]

def remove_invalid_domains(lines):
    valid_domain_regex = re.compile(r'^[a-zA-Z0-9\-\_\*\.]+$')
    return [line for line in lines if valid_domain_regex.match(line.strip())]

def remove_duplicate_lines(lines):
    return list(set(line.strip().lower() for line in lines))

def duplicate_with_asterisk_dot(lines):
    modified_lines = []
    for line in lines:
        stripped_line = line.strip()
        modified_lines.append(f"{stripped_line}\n")
        modified_lines.append(f"*.{stripped_line}\n")
    return modified_lines

def sanitize_file(input_path, output_path):
    with open(input_path, 'r') as file:
        lines = file.readlines()

    lines = find_and_remove_ip_with_cidr(lines)
    lines = remove_invalid_domains(lines)
    lines = remove_duplicate_lines(lines)
    lines = duplicate_with_asterisk_dot(lines)

    with open(output_path, 'w') as file:
        file.writelines(lines)

if __name__ == "__main__":
    input_path = 'ioc_domain_blocks.txt'
    output_path = 'sanitized_ioc_domain_blocks.txt'
    sanitize_file(input_path, output_path)