1 from scapy.all import *
 2 import sys
 3 import optparse
 4 import threading
 5 
 6 
 7 class PortScanner:
 8     def __init__(self) -> None:
 9         self.host = self.get_params()[0]
10         self.ports = self.get_params()[1]
11         
12         self.port_list = []
13         self.port_list = self.get_port_range()
 
14         self.banner()
15     
16 
17     def banner(self):
18         banner= """
19                 **************************************************
20 
21                 ********** Port Scanner V1.0 by Jason Wong********
22 
23                 **************************************************
 
24         """
25         print(banner)
26 
27     def get_port_range(self):              #根據使用者輸入的引數型別，進行處理，形成待掃描的埠列表
28         if ',' in self.ports:
29             self.port_list = self.ports.split(',')
30         elif '-' in self.ports:
31             start_port = int(self.ports.split('-')[0])
32             end_port = int(self.ports.split('
 
-')[1])
33             for port in range(start_port, end_port):
34                 self.port_list.append(port)
35         else:
36             self.port_list  = self.ports
37         return self.port_list
38 
39     def get_params(self):
40         parser = optparse.OptionParser('Usage: <Program> -H target -p port range')
41         parser.add_option('-H', '--host', dest='host', type='string', help='Specify host to scan')
42         parser.add_option('-p','--ports',dest='ports', type='string', help='Specify port range to scan')
43         options, args = parser.parse_args()
44         if options.host is None or options.ports is None:
45             print(parser.usage)
46             sys.exit()
47         return options.host, options.ports
48     
49     def port_scan(self, port):
50         packet = IP(dst=self.host)/TCP(dport=port, flags='S')
51         response = sr1(packet,timeout=1,verbose=False)
52         if response:
53             if response.haslayer(TCP):
54                 if response.getlayer(TCP).flags == 18:
55                     print("\tPort %d is open" % port)
56                 
57 
58 
59     def run(self):
60         print("Start to scan : %s" % self.host)
61       
62         for port in self.port_list:
63             t = threading.Thread(target=self.port_scan, args=(port,))
64             t.start()
65 
66 if __name__ == '__main__':
67     portscanner = PortScanner()
68     portscanner.run()