old_contents: #!/usr/local/bin/python3
  
  """
      Copyright (c) 2018-2019 Deciso B.V.
      All rights reserved.
  
      Redistribution and use in source and binary forms, with or without
      modification, are permitted provided that the following conditions are met:
  
      1. Redistributions of source code must retain the above copyright notice,
       this list of conditions and the following disclaimer.
  
      2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.
  
      THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
      INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
      AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
      AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
      OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
      SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
      INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
      CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
      ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
      POSSIBILITY OF SUCH DAMAGE.
  
      --------------------------------------------------------------------------------------
      check which aliases match the given IP
  """
  import tempfile
  import subprocess
  import os
  import sys
  import ujson
  from netaddr import IPNetwork, IPAddress, AddrFormatError
  
  if __name__ == '__main__':
      # IP should have been passed as a command line argument
      if len(sys.argv) >= 1:
  
          try:
              ip = IPAddress(sys.argv[1])
              result = {'status': 'ok', 'matches': []}
              tables = []
  
              # Fetch tables
              sp = subprocess.run(['/sbin/pfctl', '-sT'], capture_output=True, text=True)
              for line in sp.stdout.strip().split('\n'):
                  tables.append(line.strip())
  
              # Fetch IP ranges in this table and check if they match
              for table in tables:
                  sp = subprocess.run(['/sbin/pfctl', '-t', table, '-T', 'show'], capture_output=True, text=True)
                  for line in sp.stdout.strip().split('\n'):
                      if line.strip() != "":
                          if ip in IPNetwork(line.strip()):
                              result['matches'].append(table)
              print(ujson.dumps(result))
  
          except AddrFormatError:
              print(ujson.dumps({'status': 'Invalid IP specified!'}))
  
      else:
          print(ujson.dumps({'status': 'IP parameter not specified!'}))
  
new_contents: #!/usr/local/bin/python3
  
  """
      Copyright (c) 2018-2019 Deciso B.V.
      All rights reserved.
  
      Redistribution and use in source and binary forms, with or without
      modification, are permitted provided that the following conditions are met:
  
      1. Redistributions of source code must retain the above copyright notice,
       this list of conditions and the following disclaimer.
  
      2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.
  
      THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
      INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
      AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
      AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
      OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
      SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
      INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
      CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
      ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
      POSSIBILITY OF SUCH DAMAGE.
  
      --------------------------------------------------------------------------------------
      check which aliases match the given IP
  """
  import tempfile
  import subprocess
  import os
  import sys
  import ujson
  from netaddr import IPNetwork, IPAddress, AddrFormatError
  
  if __name__ == '__main__':
      # IP should have been passed as a command line argument
      if len(sys.argv) >= 1:
  
          try:
              ip = IPAddress(sys.argv[1])
              result = {'status': 'ok', 'matches': []}
              tables = []
  
              # Fetch tables
              sp = subprocess.run(['/sbin/pfctl', '-sT'], capture_output=True, text=True)
              for line in sp.stdout.strip().split('\n'):
                  tables.append(line.strip())
  
              # Test given address against tables
              for table in tables:
                  sp = subprocess.run(['/sbin/pfctl', '-t', table, '-Ttest', sys.argv[1]], capture_output=True, text=True)
                  line = sp.stderr.strip()
                  if line.find("1/1") == 0:
                     result['matches'].append(table)
              print(ujson.dumps(result))
  
          except AddrFormatError:
              print(ujson.dumps({'status': 'Invalid IP specified!'}))
  
      else:
          print(ujson.dumps({'status': 'IP parameter not specified!'}))
  
subject: use pfctl for IP check (#4320)