python中的readlines（）错误

Question

我是scapy和python的新手，并在暴力python的一个代码示例上模拟了下面的代码：一个黑客的食谱。在我的wlan0接口上运行程序后，我得到错误AttributeError:readlines

我的理解是readlines（）将capture转换成一个列表，然后findall（）就可以对字符串行进行操作。在

有人能帮忙吗？ 干杯。在

   #!/usr/bin/python

import optparse
import logging
import re       # provides support for regular expressions
logging.getLogger("scapy.runtime").setLevel(logging.ERROR) # suppresses messages which have a lower level of seriousness than error messages

from scapy.all import *

def findguest(capture):
        for line in capture.splitlines():
                IPaddr = re.findall("(?:\d{1,3}\.){3}\d{1,3}",line) # findall returns a LIST
                                                # must use ,raw

                if IPaddr:
                        print 'found IP addr '+IPaddr[0]

def main():
        parser = optparse.OptionParser() # create parser object

        parser.add_option('-i', dest='interface', type='string', help='specify interface to listen on')
        (opts, args) = parser.parse_args()

# the below if-else clause is just some error handling.. if no interface is given after -i it will print the usage menu again
# conf.iface is the standard interface which will be used by the program, so we set it to whatever interface the user gives us

        if opts.interface == None:
                print parser.usage
                exit(0)
        else:
                conf.iface = opts.interface

        try:
                sniff(filter='tcp', prn=findguest, store=0)

        except keyboardInterrupt:
                exit(0)

if __name__ == "__main__":
        main()

通过以下回溯：

^{pr2}$

不使用splitlines（）进行回溯

Traceback (most recent call last):
  File "./hotelguest2.py", line 38, in <module>
    main()
  File "./hotelguest2.py", line 32, in main
    sniff(filter='tcp', prn=findguest, store=0)
  File "/usr/lib/python2.7/dist-packages/scapy/sendrecv.py", line 586, in sniff
    r = prn(p)
  File "./hotelguest2.py", line 11, in findguest
    IPaddr = re.findall("(?:\d{1,3}\.){3}\d{1,3}",capture) # findall returns a LIST
  File "/usr/lib/python2.7/re.py", line 177, in findall
    return _compile(pattern, flags).findall(string)
TypeError: expected string or buffer

Answer 1

readlines() does not convert capture into a list where capture is a string。在

它在文件对象上工作相反，使用capture.split("\n")或capture.splitlines()