python端口扫描器，从.文本文件

Question

我的问题是，我有一个ports.txt文件在它有4个端口号。我希望这个程序扫描文本文件中指定的所有端口号。目前，它只会扫描文本文件中列出的第一个端口号，而不是40多个IP地址。我希望我的格式是正确的，我的细节足够。泰

import socket
import os
import sys
from datetime import datetime
import win32evtlogutil
import win32evtlog
def main():
### call step 1 function
ipList = network_addr()

# call step 2 function
portList = read_ports()
print(portList)
#call step 3 function
for ip in ipList:
for port in portList:
scan_ports(ip,port)
# call step 4 function
report_to_EventViewer(ipList[0:10], 2) # warning
#report_to_EventViewer(ipList, 1) # error
# processing inputs   
# Step 1: process input 1 (subnet or network address):
def network_addr():      
while True:
ip_list = []
subnet_Addr = input('Enter a Class-C Network Address or subnet with format (x.x.x): ')
subnet = subnet_Addr.split('.') # subnet is a list of 3 items (octets) 
try:
if (len(subnet)==3 and 192<=int(subnet[0])<=223 and 0<=int(subnet[1])<=255 and 0<=int(subnet[2])<=255):
#return subnet_Addr
print('valid subnet: ',subnet_Addr)
for ip in range(11,40,2):
ip_temp = subnet_Addr + '.' + str(ip)
ip_list.append(ip_temp)
return ip_list
else:
value = 'wrong subnet entered'
print(value)
except ValueError:
print('wrong subnet entered, octects must be digits')
# Step 2: process input 2 (read port numbers from ports.txt): 
def read_ports():

with open("ports.txt", 'r') as file_path:
port_list = []
for port in file_path:
try:
if int(port) in port_list:
print(f'port: {port} already exists')
else:
port_list.append(int(port))
except:
print(f'the port number: {port} is not a valid integer')  
return port_list
else:
print('ports.txt is empty n .... Exiting Port Scan App')
sys.exit()
# Step 3: scan ports
def scan_ports(ip,port):
# to get and format system time
dateTimeObj = datetime.now()
timeStamp = dateTimeObj.strftime("%d-%b-%Y (%H:%M:%S)")
try:
# open log file
with open("ip_port_log.txt","+r") as log:
# create client socket
socket.setdefaulttimeout(0.1)
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
result = sock.connect_ex((ip,port))
if result == 0:
data = "IP:" + ip + ":" + str(port) + " Open " + timeStamp
# write_to_console or display on screen
print(data)
# write in log file
log.write(data + "n")
else:
data = "IP:" + ip + ":" + str(port) + " Closed/Filtered or host is offline " + timeStamp
# write_to_console or display on screen
print(data)
# write in log file
log.write(data + "n")
# close the client socket
sock.close()


except socket.error:
print("Can't connect to IP: ", ip)
sys.exit()
except KeyboardInterrupt:
print("User pressed Ctrl+c")
sys.exit()
# Step 4: Report to Event Viewer
# output 3
def report_to_EventViewer(mylist, eventtype):
IP_EVT_APP_NAME = " CheckIPPort - IP-Port Scan Application"
IP_EVT_ID = 7040  ##According to ???
IP_EVT_CATEG = 9876  ##According to ???
IP_EVT_TYPE = win32evtlog.EVENTLOG_WARNING_TYPE  # WARNING=2
IP_EVT_ERR = win32evtlog.EVENTLOG_ERROR_TYPE  # ERROR=1
IP_EVT_STRS = mylist
IP_EVT_DATA = b"Scan IP Address Event Data"
win32evtlogutil.ReportEvent(IP_EVT_APP_NAME, 
IP_EVT_ID, 
eventCategory=IP_EVT_CATEG, 
eventType=eventtype, 
strings=IP_EVT_STRS, 
data=IP_EVT_DATA)
main()

Answer 1

你的问题是在你的read_ports方法，你返回循环内，所以它总是只读取第一个。将该方法重写为:

def read_ports():

with open("ports.txt", 'r') as file_path:
port_list = []
for port in file_path:
try:
if int(port) in port_list:
print(f'port: {port} already exists')
else:
port_list.append(int(port))
except:
print(f'the port number: {port} is not a valid integer')  
if not len(port_list):
print('ports.txt is empty n .... Exiting Port Scan App')
sys.exit()
return port_list