icmp_messages.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
   ICMP Control Messages
   https://en.wikipedia.org/wiki/Internet_Control_Message_Protocol#Control_messages
   ICMP Types 0, 3, 4, 5, 8, 11, 12, 13, 14 from RFC792
   ICMP Types 9, 11 from RFC1256
"""
ICMP_CONTROL_MESSAGE = \
    {0: {0:  'Echo reply',
        },
     3: {0:  'Destination network unreachable',
         1:  'Destination host unreachable',
         2:  'Destination protocol unreachable',
         3:  'Destination port unreachable',
         4:  'Fragmentation required, and DF flag set',
         5:  'Source route failed',
         6:  'Destination network unknown',
         7:  'Destination host unknown',
         8:  'Source host isolated',
         9:  'Network administratively prohibited',
         10: 'Host administratively prohibited',
         11: 'Network unreachable for TOS',
         12: 'Host unreachable for TOS',
         13: 'Communication administratively prohibited',
         14: 'Host Precedence Violation',
         15: 'Precedence cutoff in effect',
        },
     4: {0:  'Source quench',
        },
     5: {0:  'Redirect Datagram for the Network',
         1:  'Redirect Datagram for the Host',
         2:  'Redirect Datagram for the TOS & network',
         3:  'Redirect Datagram for the TOS & host',
        },
     8: {0:  'Echo request',
        },
     9: {0:  'Router Advertisement',
        },
     10:{0:  'Router discovery/selection/solicitation',
        },
     11:{0:  'TTL expired in transit',
         1:  'Fragment reassembly time exceeded',
        },
     12:{0:  'Pointer indicates the error',
         1:  'Missing a required option',
         2:  'Bad length',
        },
     13:{0:  'Timestamp',
        },
     14:{0:  'Timestamp reply',
        },
    }


"""
   ICMPv6 Control Messages
   https://en.wikipedia.org/wiki/ICMPv6#Types_of_ICMPv6_messages
   ICMPv6 Types 0-127 are Error Messages
   ICMPv6 Types 128-255 are Informational Messages
"""
ICMPv6_CONTROL_MESSAGE = \
    {1:  {0:  'no route to destination',
          1:  'communication with destination administratively prohibited',
          2:  'beyond scope of source address',
          3:  'address unreachable',
          4:  'port unreachable',
          5:  'source address failed ingress/egress policy',
          6:  'reject route to destination',
          7:  'Error in Source Routing Header',
         },
     2:  {0:  'packet too big',
         },
     3:  {0:  'hop limit exceeded in transit',
          1:  'fragment reassembly time exceeded',
         },
     4:  {0:  'erroneous header field encountered',
          1:  'unrecognized Next Header type encountered',
          2:  'unrecognized IPv6 option encountered',
         },
    }

if __name__ == '__main__':
    # Print all defined ICMP Control Messages
    print("ICMP Control Messages")
    print("Type\tCode:\tMessage")
    for (itype, codes) in ICMP_CONTROL_MESSAGE.items():
        print("")
        for (code, message) in codes.items():
            print("[%d]\t[%d]:\t%s" % (itype, code, message))
    print("")

    # Print all defined ICMPv6 Control Messages
    print("ICMPv6 Control Messages")
    print("Type\tCode:\tMessage")
    for (itype, codes) in ICMPv6_CONTROL_MESSAGE.items():
        print("")
        for (code, message) in codes.items():
            print("[%d]\t[%d]:\t%s" % (itype, code, message))