local_ip/
lib.rs

1extern crate regex;
2
3use std::process::Command;
4use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
5use regex::Regex;
6
7pub fn get() -> Option<IpAddr> {
8    let output = Command::new("ifconfig")
9        .output()
10        .expect("failed to execute `ifconfig`");
11
12    let stdout = String::from_utf8(output.stdout).unwrap();
13
14    let re = Regex::new(r#"(?m)^.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*$"#).unwrap();
15    for cap in re.captures_iter(&stdout) {
16        if let Some(host) = cap.at(2) {
17            if host != "127.0.0.1" {
18                if let Ok(addr) = host.parse::<Ipv4Addr>() {
19                    return Some(IpAddr::V4(addr))
20                }
21                if let Ok(addr) = host.parse::<Ipv6Addr>() {
22                    return Some(IpAddr::V6(addr))
23                }
24            }
25        }
26    }
27
28    None
29}
30
31#[cfg(test)]
32mod tests {
33    #[test]
34    fn it_works() {
35    }
36}
local_ip/lib.rs

local_ip/
lib.rs
