is the scanner code~.txt

from socket import *
from threading import Thread
import re
import time
 
global ThreadCnt
ThreadCnt = 0
PortList = {20:'FTP', 21:'FTP', 22:'SSH', 23:'Telnet', 24:'mail', 25:'SMTP', 80:'HTTP', 443:'HTTPS',  3306:'MySQL'}
 
def ConnScan(Target_Host, Target_Port):   # sT
    try:
        connskt = socket(AF_INET, SOCK_STREAM)
        connskt.connect((Target_Host, Target_Port))
        connskt.send('hello')
        result = connskt.recv(1024)
        file_result = open('result.txt','a')
        file_result.write('[' + PortList[Target_Port] + ']' + '[' + str(Target_Port) + ']' + Target_Host + '\n')
        file_result.close()
        connskt.close()
    
    except:
        pass
     
    global ThreadCnt
    ThreadCnt -= 1
 
  
 
def PortScan(Target_Host, Target_Port):    # T port
    global ThreadCnt
    for ip in Target_Host:
        print('Scanning : ' + ip)
        print(str(ThreadCnt))
        for port in Target_Port:
            while True :
                if ThreadCnt > 500  :
                    continue
                t = Thread (target=ConnScan, args=(ip, port))
                ThreadCnt +=1
                t.start()
                break

                
def main():
    file = open("iplist.txt", "r")
    Target_Host = []
    Target_Port = PortList.keys()
    cnt = 0
    for text in file.readlines():
        text = text.rstrip()
        regex = re.findall(r'(?:[\d]{1,3})\.(?:[\d]{1,3})\.(?:[\d]{1,3})\.(?:[\d]{1,3})$', text)
        if regex is not None and regex not in Target_Host:
            cnt += 1
            Target_Host.append("".join(regex))
             
 
    print(Target_Host)
    PortScan(Target_Host, Target_Port)
  
if __name__ == '__main__':
    main()




from socket import *
from threading import Thread, Lock
import re
import time

global ThreadCnt
ThreadCnt = 0
PortList = {20: 'FTP', 21: 'FTP', 22: 'SSH', 23: 'Telnet', 24: 'mail', 25: 'SMTP', 80: 'HTTP', 443: 'HTTPS', 3306: 'MySQL'}
file_lock = Lock()

def ConnScan(Target_Host, Target_Port):    # sT
    global ThreadCnt
    try:
        connskt = socket(AF_INET, SOCK_STREAM)
        connskt.settimeout(2)  # 타임아웃 설정 추가
        connskt.connect((Target_Host, Target_Port))

        # 파이썬 3에 맞게 bytes로 변환
        connskt.send(b'hello')
        result = connskt.recv(1024)

        # 파일 쓰기 동기화 (Lock 사용)
        with file_lock:
            file_result = open('result.txt', 'a', encoding='utf-8')
            file_result.write('[' + PortList[Target_Port] + ']' + '[' + str(Target_Port) + ']' + Target_Host + '\n')
            file_result.close()

        connskt.close()

    except:
        pass

    # 스레드 카운트 감소는 안전하게 처리
    with file_lock:
        ThreadCnt -= 1

def PortScan(Target_Host, Target_Port):     # T port
    global ThreadCnt
    for ip in Target_Host:
        print('Scanning : ' + ip)
        print(str(ThreadCnt))
        for port in Target_Port:
            while True:
                if ThreadCnt > 500:
                    time.sleep(0.01)  # CPU 100% 점유 방지
                    continue

                # t.start()의 적합한 위치 (루프 내부, 스레드 객체 생성 직후)
                t = Thread(target=ConnScan, args=(ip, port))

                with file_lock:
                    ThreadCnt += 1

                t.start()
                break

def main():
    file = open("iplist.txt", "r", encoding='utf-8')
    Target_Host = []
    Target_Port = PortList.keys()

    for text in file.readlines():
        text = text.rstrip()
        regex = re.findall(r'(?:[\d]{1,3})\.(?:[\d]{1,3})\.(?:[\d]{1,3})\.(?:[\d]{1,3})$', text)
        if regex:
            # re.findall은 리스트를 반환하므로 첫 번째 요소를 가져오거나 문자열 결합 처리
            ip_str = regex[0] if isinstance(regex, list) else "".join(regex)
            if ip_str not in Target_Host:
                Target_Host.append(ip_str)

    print(Target_Host)
    PortScan(Target_Host, Target_Port)

if __name__ == '__main__':
    main()




from concurrent.futures import ThreadPoolExecutor, as_completed
import socket
import re

PortList = {20: 'FTP', 21: 'FTP', 22: 'SSH', 23: 'Telnet', 24: 'mail', 25: 'SMTP', 80: 'HTTP', 443: 'HTTPS', 3306: 'MySQL'}

def ConnScan(Target_Host, Target_Port):    # sT
    try:
        with socket.create_connection((Target_Host, Target_Port), timeout=2):
            service = PortList[Target_Port]
            return '[' + service + ']' + '[' + str(Target_Port) + ']' + Target_Host
    except OSError:
        return None

def PortScan(Target_Host, Target_Port, max_workers=100):     # T port
    Target_Port = list(Target_Port)
    futures = []
    open_count = 0

    for ip in Target_Host:
        print('Scanning : ' + ip)

    with ThreadPoolExecutor(max_workers=max_workers) as executor:
        for ip in Target_Host:
            for port in Target_Port:
                futures.append(executor.submit(ConnScan, ip, port))

        for future in as_completed(futures):
            scan_result = future.result()
            if scan_result:
                open_count += 1
                print(scan_result)
                with open('result.txt', 'a', encoding='utf-8') as file_result:
                    file_result.write(scan_result + '\n')

    if open_count == 0:
        print('No open ports found.')

def main():
    open('result.txt', 'w', encoding='utf-8').close()
    Target_Host = []
    Target_Port = PortList.keys()

    with open("iplist.txt", "r", encoding='utf-8') as file:
        for text in file.readlines():
            text = text.rstrip()
            regex = re.findall(r'(?:[\d]{1,3})\.(?:[\d]{1,3})\.(?:[\d]{1,3})\.(?:[\d]{1,3})$', text)
            if regex and regex[0] not in Target_Host:
                Target_Host.append(regex[0])

    print(Target_Host)
    PortScan(Target_Host, Target_Port)

if __name__ == '__main__':
    main()




import socket 
import ipaddress 
import re 

port_regex = re.compile("([0-9]+){1,5}-([0-9]+){1,5}") 
ip_regex1 = re.compile("^\d") 
ip_regex2 = re.compile("^www\.") 

while True:
    ip_addr_input = input("IP주소 또는 도메인 주소를 입력하세요(ex: 127.0.0.1 or www.naver.com) :") 
    try:
        ip_regex1_valid = ip_regex1.search(ip_addr_input.replace(" ",""))
        ip_regex2_valid = ip_regex2.search(ip_addr_input.replace(" ","")) 
        if ip_regex1_valid:
            ip_addr = ipaddress.ip_address(ip_addr_input) 
            break 
        elif ip_regex2_valid:
            ip_addr = ip_addr_input 
            break 
    except:
        print("잘못된 주소 형식입니다.") 

while True:
    port_min = 0
    port_max = 65535
    port_range = input("포트범위를 정해주세요(ex:0-65535) :")
    port_range_valid = port_regex.search(port_range.replace(" ","")) 
    if port_range_valid:
        port_min = int(port_range_valid.group(1))
        port_max = int(port_range_valid.group(2)) 
        break 
        
valid_ports = [] 
for port in range(port_min, port_max + 1): 
    try: 
        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
            s.settimeout(0.5)   # 타임아웃이 뜨는 경우 socket을 다시 만든다.
            s.connect((str(ip_addr), port))
            valid_ports.append(port) 
    except:
        print("port",port,"not open") 
        pass 
    
for port in valid_ports:
    print(f"{ip_addr_input} 주소에 {port}가 연결되었습니다")