#![crate_type = "lib"]
#![feature(ip_addr)]
#[allow(dead_code)]
use std::fmt;
use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
#[derive(Debug)]
pub enum IpNetwork {
V4(Ipv4Network),
V6(Ipv6Network),
}
pub struct Ipv4Network {
addr: Ipv4Addr,
prefix: u8,
}
pub struct Ipv6Network {
addr: Ipv6Addr,
prefix: u8,
}
impl Ipv4Network {
pub fn new(addr: Ipv4Addr, prefix: u8) -> Ipv4Network {
Ipv4Network { addr: addr, prefix: prefix }
}
pub fn ip(&self) -> &Ipv4Addr {
&(self.addr)
}
pub fn prefix(&self) -> u8 {
self.prefix
}
pub fn mask_int(&self) -> u32 {
let prefix = self.prefix;
!(0xffffffff >> prefix)
}
pub fn mask(&self) -> (Ipv4Addr, u32) {
let prefix = self.prefix;
let mask = !(0xffffffff >> prefix);
return (Ipv4Addr::from(mask), mask);
}
pub fn network(&self) -> (Ipv4Addr, u32) {
return (self.addr, u32::from(self.addr));
}
pub fn contains(&self, ip: Ipv4Addr) -> bool {
let (_, net) = self.network();
return (u32::from(ip) & net) == net
}
}
impl Ipv6Network {
pub fn new(addr: Ipv6Addr, prefix: u8) -> Ipv6Network {
Ipv6Network { addr: addr, prefix: prefix }
}
pub fn ip(&self) -> &Ipv6Addr {
&(self.addr)
}
pub fn prefix(&self) -> u8 {
self.prefix
}
}
impl IpNetwork {
pub fn new(ip: IpAddr, prefix: u8) -> IpNetwork {
match ip {
IpAddr::V4(a) => IpNetwork::V4(Ipv4Network::new(a, prefix)),
IpAddr::V6(a) => IpNetwork::V6(Ipv6Network::new(a, prefix)),
}
}
pub fn ip(&self) -> IpAddr {
match *self {
IpNetwork::V4(ref a) => IpAddr::V4(*a.ip()),
IpNetwork::V6(ref a) => IpAddr::V6(*a.ip()),
}
}
pub fn prefix(&self) -> u8 {
match *self {
IpNetwork::V4(ref a) => a.prefix(),
IpNetwork::V6(ref a) => a.prefix(),
}
}
}
impl fmt::Debug for Ipv4Network {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "{}/{}", self.ip(), self.prefix())
}
}
impl fmt::Debug for Ipv6Network {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "{}/{}", self.ip(), self.prefix())
}
}
#[cfg(test)]
mod test {
use std::net::{Ipv4Addr, Ipv6Addr};
use super::*;
#[test]
fn create_v4() {
let cidr = Ipv4Network::new(Ipv4Addr::new(77, 88, 21, 11), 24);
assert_eq!(cidr.prefix(), 24);
}
#[test]
fn create_v6() {
let cidr = Ipv6Network::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 24);
assert_eq!(cidr.prefix(), 24);
}
#[test]
fn mask_v4() {
let cidr = Ipv4Network::new(Ipv4Addr::new(74, 125, 227, 0), 29);
let (ip, int) = cidr.mask();
assert_eq!(ip, Ipv4Addr::new(255, 255, 255, 248));
assert_eq!(int, 4294967288);
}
#[test]
fn network_v4() {
let cidr = Ipv4Network::new(Ipv4Addr::new(74, 125, 227, 0), 25);
let (ip, int) = cidr.network();
assert_eq!(ip, Ipv4Addr::new(74, 125, 227, 0));
assert_eq!(int, 1249764096);
}
#[test]
fn contains_v4() {
let cidr = Ipv4Network::new(Ipv4Addr::new(74, 125, 227, 0), 25);
let ip = Ipv4Addr::new(74,125,227,4);
assert!(cidr.contains(ip));
}
}