Python端口扫描仪，读取端口。 TXT

Question

我的问题是我有一个端口。TXT文件有4个端口号。我希望此程序扫描TXT文件中指定的所有端口号。当前，它将仅针对TXT文件中列出的第一个端口号扫描40个奇数IP地址。我希望我的格式正确，我的细节就足够了。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

您的问题在您的read_ports方法中，您在循环中返回，因此它始终只读取第一个。将方法重写为类似：

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