#!/usr/bin/env python

# banner.py

import sys
import socket
import argparse

def grab(ip, port):
    """Connects to the specified IP and port, retrieves data and returns the decoded response."""
    try:
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # TCP
        sock.settimeout(5)  # Set a timeout of 5 seconds
        sock.connect((ip, port))
        ret = sock.recv(1024)
        return ret.strip().decode()
    except socket.error as e:
        return f"Connection error: {e}"
    finally:
        sock.close()

def main():
    parser = argparse.ArgumentParser(description="Retrieve banner information from the specified IP and port.")
    parser.add_argument("ip", help="The target IP address")
    parser.add_argument("-p", "--port", type=int, default=25, help="The target port (default: 25)")
    
    args = parser.parse_args()
    
    ip = args.ip
    port = args.port
    
    print(grab(ip, port))

if __name__ == "__main__":
    main()