Pythonプログラムからインデントアウトされたputを取得できません

Question

私は与えられたインターフェイスのトラフィックをキャプチャするスクリプトを書いています。しかし、プログラムの実行中に、私はちょうどメッセージを得ることは言う：

"Process finished with exit code 0" 

私のコードの下に注意してください。

import socket 
from struct import * 
import datetime 
import pcapy 
import sys 


def main(argv): 
    devices = pcapy.findalldevs() 
    print (devices) 

    for d in devices: 
     print "Available devices are ", d 

    #Device to be sniffed 

    input_dev = raw_input("Enter deice name to sniff") 

    print "Following device would be printed", input_dev 

    #open 
    #device 
    # Arguments here are: 
    # device 
    # snaplen (maximum number of bytes to capture _per_packet_) 
    # promiscious mode (1 for true) 
    # timeout (in milliseconds) 


    cap = pcapy.open_live(input_dev,65536,1,0) 

    #Interating all packets captured in to a variable 
    while(1): 
     (header, packet) = cap.next() 
     parse_packet(packet) 

     #Convert a string of 6 characters of ethernet address into a dash separated hex string 
    def eth_addr(a): 
     b = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x" % (ord(a[0]), ord(a[1]), ord(a[2]), ord(a[3]), ord(a[4]), ord(a[5])) 


    # Parsing captured packets 

    def parse_packet(packet): 

     eth_length = 14 

     # Get the protocol used from the captured packet 
     eth_header = packet[:eth_length] 
     eth = unpack('!6s6sH', eth_header) 
     eth_protocol = socket.ntohs(eth[2]) 
     print 'Destination MAC : ' + eth_addr(packet[0:6])+'Source MAC: ' + eth_addr(packet[0:12]) + 'Protocol: ' +str(eth_protocol) 

     # Parse the IP packet 
     # 
     if eth_protocol == 8: 
     #Parse IP header 
     #take first 20 characters for the ip header 
      ip_header = packet[eth_length:20+eth_length] 

     #Now unpack them 
     iph = unpack('!BBHHHBBH4s4s', ip_header) 
     version_ihl = iph[0] 
     version = version_ihl >> 4 
     ihl = version_ihl & oxf # need to know what is the oxf 
     iph_length = ihl * 4 

     ttl = iph[5] 
     print "ttl value is = ", str(ttl) 

     protocol = ip[6] 
     print "protocol = ", str(protocol) 

     s_addr = socket.inet_ntoa(iph[8]); 
     print "source address = ", str(s_addr) 

     d_address = socket.inet_ntoa(iph[9]) 
     print "Destination address = ", str(d_address) 


     #Parsing TCP header 

     if protocol == 6: 

      #if protocol = 6, it would be TCP 
      t = iph_length + eth_length 
      tcp_heder = packet 

      #Unpack the packet 
      tcph = unpack('!HHLLBBHHH', tcp_heder) 

      source_port = tcph[0] 
      print "Source port =", source_port 

      dst_port = tcph[1] 
      print "Dst port =", dst_port 

      ack_no = tcph[3] 
      print "ack_No = ", ack_no 

      doff_deserverved = tcph[4] 
      print "doff_deserved = ", doff_deserverved 
      tcp_length = doff_deserverved >> 4 

      h_size = eth_length + iph_length + tcp_length * 4 
      data_size = len(packet) - h_size 

      #get the data from the packet 
      data = packet[data_size:] 
      print "Data is = ", data 

     elif protocol == 1: 
      u = iph_length + eth_length 
      icmp_length = 4 
      icmp_header= packet[u:u+4] 

      #Now unpack them 
      icmp = unpack('!BBH' , icmp_header) 

      icmp_type = icmp[0] 
      print "Type is = ", icmp 

      code = icmp[1] 
      print "Code is = ", code 

      checkSum = icmp[3] 
      print "Check sum is ", checkSum 

      h_size = eth_length + iph_length + icmp_length 
      data_sze = len(packet)- h_size 
      print "Data size = ", data_size 

      #Get Data from the packet 
      data2 = packet[h_size:] 
      print "Data is = ", data2 


     #Parsing UDP packet 
     elif protocol == 17: 
      u = iph_length + eth_length 
      udph_leungth = 8 
      udp_header = packet[u:u+8] 

      #Now unpack them 
      udp_packet = unpack('!HHHH', udp_header) 

      s_port = udp_packet[0] 
      print "Source Port = ", s_port 

      d_port = udp_packet[1] 
      print "Udp Packet = ", d_port 


      lenth_of_packet = udp_packet[2] 
      print "Length of packet = ", lenth_of_packet 

      check_sum = udp_packet[3] 
      print "check sum is ", check_sum 

      h_size_of_packet = eth_length + iph_length + udph_leungth 

      actaul_size = len(packet) - h_size_of_packet 

      #Retrieving data packet from the size 

      data = packet[h_size_of_packet] 

      print "Actual Data = ", data 

      #IF there any other some protocol 
     else: 
      print "Protol other than TCP/UDP/ICMP" 



    main(sys.argv) 

私が出てインデントプットを生成するか、しない理由がどうなるか教えてくださいそれを得るための他の方法。

Answer 1

コードに複数のインデントの問題があります。 コードを再訪することをお勧めします。