iprange

Utilities and libraries for manipulating lists of ranges of IPV4 addresses

Building

Just type make. The Makefile specifies C++ version 2x, but C++ 11 suffices. Modify the string cpp2a in the Makefile if you wish.

Programs

These programs read from standard input and write to standard output. The input format is text. Within an input, a comment starts with a space or newline follwed by a hash mark (#). The comment continues to end-of-line. Apart from comments, the input consists of a sequence of ranges of IPV4 addresses. These ranges are separated by spaces and/or end-of-line. A range may be in one of three forms:

• A single address nn.nn.nn.nn
• A range of addresses with a dash nn.nn.nn.nn-nn.nn.nn.nn. Note that spaces around the dash are not permitted.
• A range of addresses in CIDR form nn.nn.nn.nn/mm.

Executing any of these programs with a single argument help will yield a brief guide to usage.

Program ipar_read

Transforms input into a sorted and standardized form. The result is written to standard output in one of three possible formats. It is mostly used to sort and remove redundancies.

Program ipar_interactive

Similar to program ipar_read, but processes input one line at a time. This is intended to be used interactively.

Program ipar_intersect

Accepts an arbitrary number of command line arguments, each of which is a file name. The content represented by these files is intersected with the content represented by standard input. The result is written to standard output.

Program ipar_subtract

Accepts an arbitrary number of command line arguments, each of which is a file name. The content represented by these files is removed from the content represented by standard input. The result is written to standard output.

Program ipar_gap_analyzer

Analyzes the content represented by standard input. This program reports on portions of the content that are "almost dense." Still under development.

Program ipar_expand

Unlike the other programs, this one does no sorting and does not remove redundancies. It is mainly useful for testing other programs.

Script read_test.sh

A test script for program ipar_read.

Script intersect_test.sh

A test script for program ipar_intersect.

Script subtract_test.sh

A test script for program ipar_subtract.

Reusable Software

ipar_iplist software

The algorithms used to build the programs in the previous section. Includes text processing as well. This software is contained in these files:

• Makefile
• ipar_iplist.h
• ipar_iplist.cpp
• ipar_common.h
• ipar_common.cpp
• ipar_numlist.h
• ipar_numlist.tcc

ipar_iplist software

A C++ template library for manipulating intervals expressed using an arbitrary integer-like type. This software is contained in these files:

• Makefile
• ipar_numlist.h
• ipar_numlist.tcc