This is a port scanner that I’m doing for my python class. I need to make this code write a file. I’ve tried I’m terrible, please help.
#This is the one
import threading
import socket
import sys
from datetime import datetime
open_ports = []
def validateIP(ip):
start=0
count=0
flag=0
for i in range(len(ip)):
if(ip[i]=='.'):
count+=1
if(len(ip[start:i])==0 or int(ip[start:i])>255 or int(ip[start:i])<0):
flag=1
break
else:
start=i+1
if(flag==1):
print("Invalid IP")
else:
if(count==3 and len(ip[start:])!=0 and int(ip[start:])<=255 and int(ip[start:])>=0):
print("Valid IP")
else:
print("Invalid Ip")
#Driver Program
print("Enter Ip address:" )
ip=input()
validateIP(ip)
def scan_ports(name, start_port, max_port):
try:
for port in range(start_port, max_port):
if (port - 1) == max_port - 1:
print(name, "is finishing its tasks")
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
socket.setdefaulttimeout(1)
result = s.connect_ex((target_ip, port)) # returns an error indicator
if result == 0:
open_ports.append(port)
s.close()
except socket.gaierror:
print("Hostname could not be resolved")
sys.exit()
except socket.error:
print("Could not connect to server")
sys.exit()
portfiles = open('ScanResults', "w")
if __name__ == '__main__':
print("-" * 50)
print("Port scanner 3.0")
print("-" * 50)
target_ip = input('Enter target ip: ')
start_port = int(input('starting port: '))
max_ports = int(input('ending port: '))
threads_count = int(input('threads count: '))
threads = []
i = 0
next_max = start_port
min_port = start_port
while i < threads_count:
i += 1
next_max += ((max_ports - start_port) // threads_count)
if i == threads_count:
next_max = max_ports
print("Thread{} starts: {} ends: {}".format(i, min_port, next_max))
threads.append(threading.Thread(target=scan_ports, args=("thread{}".format(i), min_port, next_max)))
min_port = next_max
print("-" * 50)
print("Scanning for open ports in range {}-{} . . .".format(start_port, max_ports))
print("Time started: " + str(datetime.now()))
print("-" * 50)
for var in threads:
var.start()
for var in threads:
var.join()
print("Done scanning")
print("Time Ended: " + str(datetime.now()))
if len(open_ports) == 0:
print("no open ports found in range {}-{}".format(start_port, max_ports))
else:
print("-" * 50)
print("open ports found: ")
for port in open_ports:
print(port)
print("-" * 50)
input("Scan Complete . . .")
