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  1. def getSubnetMask(ip):
  2.     return int(ip[len(ip)-2:])
  3.  
  4.  
  5. def subnet_calculator(ip_list):
  6.  
  7.     ip_ranges = []
  8.     addresses = []
  9.     for ip in ip_list:
  10.  
  11.  
  12.         # find subnet mask
  13.         subnet = getSubnetMask(ip)
  14.  
  15.         # calculate subnet 2**(8-(subnet % 8)
  16.         free_addresses = 2**(8-(int(subnet) % 8))
  17.  
  18.         # remove dots in IP-Address so i have a number
  19.         split_ip = ip[:len(ip)-3].split('.')
  20.  
  21.         block = getBlock(subnet)
  22.  
  23.         start_ip = list(split_ip)
  24.         end_ip = list(split_ip)
  25.         if free_addresses != 256:
  26.             start_range = 0
  27.             # find start and end of the IP-Range
  28.             while True:
  29.                 end_range = start_range + free_addresses
  30.                 if start_range <= int(split_ip[block]) and end_range >= int(split_ip[block]):
  31.                     break
  32.                 start_range = end_range
  33.  
  34.             # create two copy's of the split_ip list and change their start and end adress
  35.  
  36.             start_ip[block] = str(start_range)
  37.             end_ip[block] = str(end_range-1)
  38.         elif subnet != 32:
  39.             start_ip[block] = '0'
  40.             end_ip[block] = '255'
  41.  
  42.         #create 2d list and add start and end ip
  43.         ip_ranges.append([])
  44.         # save start and end in a 2D-list
  45.         ip_ranges[-1].append(ip[:len(ip)-3])
  46.         ip_ranges[-1].append(subnet)
  47.         ip_ranges[-1].append('.'.join(start_ip))
  48.         ip_ranges[-1].append('.'.join(end_ip))
  49.  
  50.         addresses.append(ip[:len(ip)-3])
  51.  
  52.  
  53.     for address, subnet, start, end in ip_ranges:
  54.         ip_blocks = address.split('.')
  55.        # ip_block = getBlock(subnet)
  56.         for a, s, st, e in ip_ranges:
  57.             if address != a and subnet >= s:
  58.                 start_block = st.split('.')
  59.                 end_block = e.split('.')
  60.                 even = True
  61.                 compare_block = getBlock(s)
  62.                 for i in reversed(range(compare_block)):
  63.                     if ip_blocks[i] != start_block[i]:
  64.                         even = False
  65.                         break
  66.  
  67.                 # if ip in range -> remove from list
  68.                 if int(start_block[compare_block]) <= int(ip_blocks[compare_block]) and int(end_block[compare_block]) >= int(ip_blocks[compare_block]) and even:
  69.                     addresses.remove(address)
  70.                     break
  71.  
  72.  
  73.     for ip in addresses:
  74.         print(ip)
  75.  
  76.     print('--------------')
  77.  
  78.  
  79.  
  80. def getBlock(subnet):
  81.     if subnet >= 0 and subnet <= 7:
  82.         return 0
  83.     elif subnet >= 8 and subnet <= 15:
  84.         return 1
  85.     elif subnet >= 16 and subnet <= 23:
  86.         return 2
  87.     else:
  88.         return 3
  89.  
  90. subnet_calculator(['172.26.32.162/32', '172.26.32.0/24', '172.26.0.0/16', '172.26.32.199/25'])
  91. subnet_calculator(['192.168.0.0/16', '172.24.96.17/32', '172.50.137.225/32', '202.139.219.192/32', '172.24.68.0/24',
  92.                     '192.183.125.71/32', '201.45.111.138/32', '192.168.59.211/32', '192.168.26.13/32', '172.24.0.0/17',
  93.                     '172.24.5.1/32', '172.24.68.37/32', '172.24.168.32/32'])
  94.  
  95. subnet_calculator(['172.24.68.0/24', '172.24.0.0/17', '192.168.59.211/32', '192.168.0.0/16'])
  96. subnet_calculator(['172.24.96.17/32', '172.24.0.0/17'])
Success #stdin #stdout 0s 23352KB
comments (?)
stdin 
Standard input is empty
stdout 
172.26.0.0
--------------
192.168.0.0
172.50.137.225
202.139.219.192
192.183.125.71
201.45.111.138
172.24.0.0
172.24.168.32
--------------
172.24.0.0
192.168.0.0
--------------
172.24.0.0
--------------
https://ideone.com/hdGzMk
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
public

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