Ip-Model

A Data Structure for efficiently storing, removing and checking all Ipv4 addresses in O(1) time.

Pre-requisite

• pytest

Usage

Single Ip's

Ipv4

from ip_model.Ipv4 import Ipv4

blacklist = Ipv4()

To add an IP:

# arg: String
# returns: True
blacklist.add("192.0.0.18")

To remove an IP:

# arg: String
# returns: removed IP
blacklist.remove("192.0.0.18")

To check if an IP is present/not:

# arg: String
# returns: bool
blacklist.is_present("192.0.0.18")

Ipv6

from ip_model.Ipv4 import Ipv6

blacklist = Ipv6()

To add an IP:

# arg: String
# returns: True
blacklist.add("192::18")

To remove an IP:

# arg: String
# returns: removed IP
blacklist.remove("192:ffff:e034::23")

To check if an IP is present/not:

# arg: String
# returns: bool
blacklist.is_present("::5:4fed")

CIDR

Ipv4:

To Add

# arg: String
# returns: True
blacklist.add_cidr("192.92.53.0/24")

# arg: String
# returns: True
blacklist.add_cidr("192.92.53.0/255.255.255.252")

To remove:

# arg: String
# returns: removed CIDR
blacklist.remove_cidr("192.92.53.0/24")

Ipv6:

To Add

# arg: String
# returns: True
blacklist.add_cidr("8653:53fe::/122/24")

To remove:

# arg: String
# returns: removed CIDR
blacklist.remove_cidr("8653:53fe::/122")

Note:

The tradeoff is, the call for how to handle with overlapping CIDR's must be taken by the service using the DS. The DataStructure only performs the requested operation with the given data

Ip Class (From v3.0.0)

Handles both Ipv4 and Ipv6

from ip_model.Ip import Ip

blacklist = Ip()

To add an IP:

# arg: String
# returns: True
blacklist.add("192.0.0.18")
blacklist.add("192::18")

To remove an IP:

# arg: String
# returns: removed IP
blacklist.remove("192.0.0.18")
blacklist.remove("1924::18")

Exception Handling

• Throws TypeError: passing Invalid Datatype, incorrect number of arguments
• Throws InvalidIpException: When an invalid Ip is passed

from ip_model.Exceptions import InvalidIpException

try:
    blacklist.add("192.455.554.343")
except InvalidIpException:
    print("Incorrect Ipv4 Address")

# For CIDR
try:
    blacklist.add("192.12.65.0/16")
except InvalidIpException:
    print("Incorrect CIDR")

ChangeLog

• v3.0.0

Introducing IP class Return types for add, remove, add_cidr, remove_cidr have been changed

• v2.0.1

Fix a bug in Ipv6

• v2.0.0

Adding Support for Ipv6 addresses & CIDR for the same

• v1.1.0

Adding Support for Ipv4 CIDR ranges

• v1.0.0

Introducing Ip model with support for single Ipv4 address