python 多執行緒 實現埠掃描
# -*- coding: utf-8 -*- #!/usr/bin/python2 from socket import * import threading lock = threading.Lock() openNum = 0 def portScanner(host,port): global openNum try: s = socket(AF_INET,SOCK_STREAM) s.connect((host,port)) lock.acquire() openNum+=1 print('[+] %d open' % port) lock.release() s.close() except: pass def main(): setdefaulttimeout(1) for n in range(1,76): threads = [] #print (n-1)*880,n*880 for p in range((n-1)*880,n*880): t = threading.Thread(target=portScanner,args=('127.0.0.1',p)) threads.append(t) t.start() for t in threads: pass t.join()#在子執行緒完成執行之前,這個子執行緒的父執行緒將一直被阻塞。 print('[*] The scan is complete!') print('[*] A total of %d open port ' % (openNum)) if __name__ == '__main__': main()
執行結果:
[+] 135 open
[+] 443 open
[+] 903 open
[+] 913 open
[+] 1536 open
[+] 1537 open
[+] 1538 open
[+] 1542 open
[+] 1548 open
[+] 1556 open
[+] 2869 open
[+] 4000 open
[+] 4300 open
[+] 4301 open
[+] 5939 open
[+] 7680 open
[+] 8307 open
[+] 8363 open
[+] 8382 open
[+] 8911 open
[+] 8912 open
[+] 12037 open
[+] 12056 open
[+] 13790 open
[+] 14979 open
[+] 23405 open
[+] 28317 open
[+] 29917 open
[+] 49152 open
[+] 61078 open
[*] The scan is complete!
[*] A total of 30 open port
for p in range(1,1024):
t = threading.Thread(target=portScanner,args=('127.0.0.1',p))
threads.append(t)
t.start()
出錯:thread.error: can't start new thread
本人計算機的最大併發執行緒是866,這裡有1024,超過最大執行緒數導致出錯
TCP/IP協議中的埠,埠號的範圍從0到65535,掃描65535個埠的狀況.
for n in range(1,76):
threads = []
#print (n-1)*880,n*880
for p in range((n-1)*880,n*880):
t = threading.Thread(target=portScanner,args=('127.0.0.1',p))
threads.append(t)
t.start()
for t in threads:
pass
t.join()#在子執行緒完成執行之前,這個子執行緒的父執行緒將一直被阻塞。