This crate provides data structures and functions to deal with IPv4 CIDRs and IPv6 CIDRs.
The format of CIDRs.
```rust extern crate cidr_utils;
use cidr_utils::cidr::IpCidr;
asserteq!(true, IpCidr::isipcidr("192.168.1.0/24")); asserteq!(true, IpCidr::isipcidr("192.168.1.1/24")); asserteq!(true, IpCidr::isipcidr("192.168.1.0/0")); asserteq!(false, IpCidr::isipcidr("192.168.1.0/33"));
asserteq!(true, IpCidr::isipcidr("192.168.1.0/255.255.255.0")); asserteq!(true, IpCidr::isipcidr("192.168.1.0/255.255.254.0")); asserteq!(false, IpCidr::isip_cidr("192.168.1.0/255.255.255.1"));
asserteq!(true, IpCidr::isipcidr("192.168.1.0")); // 192.168.1.0/32 asserteq!(true, IpCidr::isipcidr("192.168.1")); // 192.168.1/24 asserteq!(true, IpCidr::isipcidr("192.168")); // 192.168/16 asserteq!(true, IpCidr::isipcidr("192")); // 192/8
asserteq!(true, IpCidr::isipcidr("192/8")); asserteq!(true, IpCidr::isipcidr("192/255.0.0.0")); asserteq!(false, IpCidr::isipcidr("192/16")); asserteq!(false, IpCidr::isipcidr("192/255.255.0.0"));
asserteq!(true, IpCidr::isipcidr("2001:4f8:3:ba::/64")); asserteq!(true, IpCidr::isipcidr("2001:4f8:3:ba:2e0:81ff:fe22:d1f1/128")); asserteq!(true, IpCidr::isipcidr("::ffff:1.2.3.0/120")); asserteq!(true, IpCidr::isipcidr("::ffff:1.2.3.1/120")); asserteq!(false, IpCidr::isip_cidr("::ffff:1.2.3.0/129"));
asserteq!(true, IpCidr::isipcidr("2001:4f8:3:ba:2e0:81ff:fe22:d1f1")); // 2001:4f8:3:ba:2e0:81ff:fe22:d1f1/128 asserteq!(true, IpCidr::isipcidr("2001:4f8:3:ba::")); // 2001:4f8:3:ba::/128 ```
Determine whether an IP is in a CIDR.
```rust extern crate cidr_utils;
use std::net::IpAddr; use std::str::FromStr;
use cidr_utils::cidr::IpCidr;
let cidr = IpCidr::from_str("192.168.51.0/24").unwrap();
asserteq!(true, cidr.contains(IpAddr::fromstr("192.168.51.103").unwrap())); asserteq!(false, cidr.contains(IpAddr::fromstr("192.168.50.103").unwrap())); ```
```rust extern crate cidr_utils;
use std::net::Ipv4Addr;
use cidr_utils::cidr::Ipv4Cidr;
let cidr = Ipv4Cidr::from_str("192.168.51.0/24").unwrap();
asserteq!(true, cidr.contains([192, 168, 51, 103])); asserteq!(true, cidr.contains(Ipv4Addr::new(192, 168, 51, 103))); assert_eq!(false, cidr.contains([192, 168, 50, 103]));
assert_eq!(256, cidr.size()); ```
Combine subnetworks to supernetworks.
```rust extern crate cidr_utils;
use cidrutils::cidr::Ipv4Cidr; use cidrutils::utils::Ipv4CidrCombiner;
let mut combiner = Ipv4CidrCombiner::new();
combiner.push(Ipv4Cidr::from_str("192.168.51.100").unwrap());
asserteq!(1, combiner.len()); asserteq!("192.168.51.100/32".tostring(), combiner[0].tostring());
combiner.push(Ipv4Cidr::from_str("192.168.51.101").unwrap());
asserteq!(1, combiner.len()); asserteq!("192.168.51.100/31".tostring(), combiner[0].tostring());
combiner.push(Ipv4Cidr::from_str("192.168.51.102").unwrap());
asserteq!(2, combiner.len()); asserteq!("192.168.51.100/31".tostring(), combiner[0].tostring()); asserteq!("192.168.51.102/32".tostring(), combiner[1].to_string());
combiner.push(Ipv4Cidr::from_str("192.168.51.103").unwrap());
asserteq!(1, combiner.len()); asserteq!("192.168.51.100/30".tostring(), combiner[0].tostring());
asserteq!(true, combiner.contains([192, 168, 51, 102])); asserteq!(false, combiner.contains([192, 168, 51, 105]));
assert_eq!(4, combiner.size()); ```
Separate a network into subnetworks.
```rust extern crate cidr_utils;
use cidrutils::cidr::Ipv4Cidr; use cidrutils::utils::Ipv4CidrSeparator;
let cidr = Ipv4Cidr::from_str("192.168.56.0/24").unwrap();
let result = Ipv4CidrSeparator::divide_by(&cidr, 4).unwrap();
asserteq!(4, result.len()); asserteq!(64, result[0].size()); asserteq!(64, result[1].size()); asserteq!(64, result[2].size()); assert_eq!(64, result[3].size());
asserteq!("[192.168.56.0/26]".tostring(), result[0].tostring()); asserteq!("[192.168.56.64/26]".tostring(), result[1].tostring()); asserteq!("[192.168.56.128/26]".tostring(), result[2].tostring()); asserteq!("[192.168.56.192/26]".tostring(), result[3].tostring());
let result = Ipv4CidrSeparator::divide_by(&cidr, 5).unwrap();
asserteq!(5, result.len()); asserteq!(51, result[0].size()); asserteq!(51, result[1].size()); asserteq!(51, result[2].size()); asserteq!(51, result[3].size()); asserteq!(52, result[4].size());
asserteq!("[192.168.56.0/27, 192.168.56.32/28, 192.168.56.48/31, 192.168.56.50/32]".tostring(), result[0].tostring()); asserteq!("[192.168.56.51/32, 192.168.56.52/30, 192.168.56.56/29, 192.168.56.64/27, 192.168.56.96/30, 192.168.56.100/31]".tostring(), result[1].tostring()); asserteq!("[192.168.56.102/31, 192.168.56.104/29, 192.168.56.112/28, 192.168.56.128/28, 192.168.56.144/29, 192.168.56.152/32]".tostring(), result[2].tostring()); asserteq!("[192.168.56.153/32, 192.168.56.154/31, 192.168.56.156/30, 192.168.56.160/27, 192.168.56.192/29, 192.168.56.200/30]".tostring(), result[3].tostring()); asserteq!("[192.168.56.204/30, 192.168.56.208/28, 192.168.56.224/27]".tostring(), result[4].to_string());
let result = Ipv4CidrSeparator::sub_networks(&cidr, 26).unwrap();
asserteq!(4, result.len()); asserteq!(64, result[0].size()); asserteq!(64, result[1].size()); asserteq!(64, result[2].size()); assert_eq!(64, result[3].size());
asserteq!("192.168.56.0/26".tostring(), result[0].tostring()); asserteq!("192.168.56.64/26".tostring(), result[1].tostring()); asserteq!("192.168.56.128/26".tostring(), result[2].tostring()); asserteq!("192.168.56.192/26".tostring(), result[3].tostring()); ```
Enable the serde feature to support the serde framework.
toml
[dependencies.cidr-utils]
version = "*"
features = ["serde"]
https://crates.io/crates/cidr-utils
https://docs.rs/cidr-utils