ripcalc

Calculate or lookup network addresses.

install

$ git clone 'https://gitlab.com/edneville/ripcalc.git' $ cd ripcalc \ && cargo build --release \ && please install -m 0755 -s target/release/ripcalc /usr/local/bin

usage

Ripcalc allows networks to be provided by argument

$ ripcalc 127.0.0.1/8 IP is: 127.0.0.1/8 Broadcast is: 127.255.255.255 Network is: 127.0.0.0 Subnet is: 255.0.0.0 Wildcard is: 0.255.255.255 Network size: 16777216

The same output is visible with stdin:

echo '127.0.0.1/8' | ripcalc ...

The output format can be customised:

$ ripcalc 2001:ba8:1f1:f1cb::4/64 --format "select * from IP6 where (ip >= %ln and ip <= %lb) and active = 1;\nupdate IP6 set active = 0 where (ip >= %ln and ip <= %lb) and active = 1;" select * from IP6 where (ip >= 42540724579414763292693624807812497408 and ip <= 42540724579414763311140368881522049023) and active = 1; update IP6 set active = 0 where (ip >= 42540724579414763292693624807812497408 and ip <= 42540724579414763311140368881522049023) and active = 1;

pipes

Sometimes if you want to quickly see if an address is part of a group of networks you can set something like this in your .bash_aliases:

alias is_our_networks='ripcalc --inside 192.168.0.0/16 --format short'

With this alias it would then be possible to do something like this to quickly see if the domain uses your infrastructure:

dig +short domain.com | is_our_networks

formatting

% denotes a format control character, followed by one of the following:

| placeholder | effect | |-------------|--------| | %a | IP address string | | %n | Network address string | | %s | Subnet address string | | %w | Wildcard address string | | %b | Broadcast address string |

Additional characters prefixing the above placeholder can control the representation:

| placeholder | effect | |-------------|--------| | %B | Binary address string | | %S | Split binary at network boundary string | | %l | Unsigned integer string | | %L | Signed integer string | | %x | Hex address string |

Other format characters:

| placeholder | effect | |-------------|--------| | %c | CIDR mask | | %t | Network size | | %r | Network reservation information (if available) | | %d | Matching device interface by IP | | %m | Matching media link interface by network | | %k | RBL-style format | | %% | % | | \n | Line break | | \t | Tab character |

For example:

$ ripcalc --format '%k.all.s5h.net\n' 192.168.1.2 2.1.168.192.all.s5h.net

With a csv it can find networks that an IP address is within, use %{field} to print matches:

$ cat nets.csv network,range,owner rfc1918,192.168.0.0/16,bob rfc1918,172.16.0.0/12,cliff rfc1918,10.0.0.0/8,mr nobody $ ripcalc --csv nets.csv -i range --format '%{owner}\n' 192.168.0.0 bob

Addresses can be read via file or from stdin (-):

$ cat list 127.0.0.1/28 10.0.0.1/28 192.168.1.1/30 172.18.1.1/30 10.0.0.0/30 $ ripcalc --csv nets.csv -i range --format '%{range} %{owner}\n' -s list 10.0.0.0/8 mr nobody 192.168.0.0/16 bob 172.16.0.0/12 cliff 10.0.0.0/8 mr nobody

When -a is used, addresses read from -s will not be shown when listing -l a network, showing only available addresses.

When -e is used with -s the smallest encapsulating network will be returned.

Given a list of IP addresses, print only those that match the network. When s and inside are used, only addresses from -s are printed if they are that are inside of the IP source network on the command line. This can be inverted with `--outside:

$ echo -e '192.168.0.0\n192.167.255.255\n' | ripcalc -s - --inside 192.168.0.0/16 --format short 192.168.0.0 $ echo -e '192.168.0.0\n192.167.255.255\n' | ripcalc -s - --outside 192.168.0.0/16 --format short 192.167.255.255

IP addresses can be treated as reversed, if /proc/net/route holds addresses in reversed format, --reverse inputs and --base 16 could be used together to convert to dotted-quad.

divide

Networks can be divided into subnets:

$ ripcalc 192.168.1.10/24 --divide 26 --format cidr 192.168.1.0/26 192.168.1.64/26 192.168.1.128/26 192.168.1.192/26

help

Options: -4, --ipv4 IPv4 ipv4 address -6, --ipv6 IPv6 ipv6 address -f, --format STRING format output 'cidr' expands to %a/%c\n 'short' expands to %a\n See manual for more options -m, --mask CIDR cidr mask -c, --csv PATH csv reference file -i, --field FIELD csv field -l, --list list all addresses in network, combine with -m to list networks -h, --help display help -b, --base INTEGER ipv4 base format, default to oct -a, --available display unused addresses --outside display only outside network --inside display only inside network -d, --divide CIDR divide network into chunks -r, --reverse (none, inputs, sources or both) v4 octets, v6 hex -s, --file PATH lookup addresses from, - for stdin -e, --encapsulating display encapsulating network from lookup list -v, --version print version