old_contents: #!/usr/bin/python
  # -*- coding: utf-8 -*-
  
  # Copyright (c) 2015 clowwindy
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  from __future__ import absolute_import, division, print_function, \
      with_statement
  
  import os
  import sys
  import argparse
  
  if __name__ == '__main__':
      parser = argparse.ArgumentParser(description='See README')
      parser.add_argument('-c', '--count', default=3, type=int,
                          help='with how many failure times it should be '
                               'considered as an attack')
      config = parser.parse_args()
      ips = {}
      banned = set()
      for line in sys.stdin:
          if 'can not parse header when' in line:
              ip = line.split()[-1].replace('::ffff:', '').split(':')[0]
              if ip not in ips:
                  ips[ip] = 1
                  print(ip)
                  sys.stdout.flush()
              else:
                  ips[ip] += 1
              if ip not in banned and ips[ip] >= config.count:
                  banned.add(ip)
                  cmd = 'iptables -A INPUT -s %s -j DROP' % ip
                  print(cmd, file=sys.stderr)
                  sys.stderr.flush()
                  os.system(cmd)
  
new_contents: #!/usr/bin/python
  # -*- coding: utf-8 -*-
  
  # Copyright (c) 2015 clowwindy
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  from __future__ import absolute_import, division, print_function, \
      with_statement
  
  import os
  import sys
  import argparse
  
  if __name__ == '__main__':
      parser = argparse.ArgumentParser(description='See README')
      parser.add_argument('-c', '--count', default=3, type=int,
                          help='with how many failure times it should be '
                               'considered as an attack')
      config = parser.parse_args()
      ips = {}
      banned = set()
      # add your ip to whitelist
      ip_whitelist = [127.0.0.1]
      for line in sys.stdin:
          if 'can not parse header when' in line:
              ip = line.split()[-1].replace('::ffff:', '').split(':')[0]
              if ip not in ips:
                  ips[ip] = 1
                  print(ip)
                  sys.stdout.flush()
              else:
                  ips[ip] += 1
              if ip not in ip_whitelist and ip not in banned and ips[ip] >= config.count:
                  banned.add(ip)
                  cmd = 'iptables -A INPUT -s %s -j DROP' % ip
                  print(cmd, file=sys.stderr)
                  sys.stderr.flush()
                  os.system(cmd)
  
subject: add whitelist for autoban