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use std::net::{TcpStream,Ipv4Addr,AddrParseError};
use std::io::{Write, Read};
use std::str::FromStr;
use std::option::Option;
#[derive(Copy, Clone)]
struct Endpoint<'a> {
host: &'a str,
path: Option<&'a str>,
port: i32,
}
const ENDPOINTS: [Endpoint; 1] = [
Endpoint{
host: "httpbin.org",
path: Some("/ip"),
port: 80
}
];
fn parse_ip(input: &str) -> Result<Ipv4Addr, AddrParseError> {
let ip_parts: Vec<&str> = input.split(|c| c == ' ' || c == '.' || c == '\n' || c == ':').collect();
let mut ip_vec: Vec<i32> = vec![];
for p in ip_parts {
if p == "" {
continue;
}
let mut p_clean = str::replace(p, "\"", "");
p_clean = str::replace(p_clean.as_str(), ",", "");
if let Some(_x) = p.find(|c: char| c == '{' || c == '}') {
p_clean = str::replace(p_clean.as_str(), "{", "");
p_clean = str::replace(p_clean.as_str(), "}", "");
}
let mut r = i32::from_str(p_clean.as_str());
match r {
Ok(num) => { r = Ok(num) },
Err(_e) => { r = Ok(256) }
}
let n = r.unwrap();
if n < 256 {
ip_vec.push(n);
}
}
return Ipv4Addr::from_str(format!("{}.{}.{}.{}", ip_vec[0],ip_vec[1],ip_vec[2],ip_vec[3]).as_str());
}
fn get_ip() -> String {
let index: usize = 0;
let endpoint = ENDPOINTS[index];
let host = format!("{}:{}", endpoint.host, endpoint.port);
let mut socket = TcpStream::connect(host).unwrap();
let _r = socket.write_fmt(format_args!("GET {} HTTP/1.0\r\nHost: {}\r\n\r\n", endpoint.path.unwrap_or("/"), endpoint.host));
let mut res = String::from("");
let _resp = socket.read_to_string(&mut res).unwrap();
let r = parse_ip(res.as_str());
return r.unwrap().to_string();
}
pub struct IP {}
impl IP {
pub fn is() -> String {
return get_ip();
}
}
mod tests {
#[test]
fn test_match_some_ip() {
use regex::Regex;
use self::super::*;
let ip = IP::is();
let re = Regex::new(r"\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}").unwrap();
assert_eq!(re.is_match(ip.as_str()), true);
}
#[test]
fn parse_ip_single_line() {
use self::super::*;
let ip = parse_ip("Your IP Address is 12.34.56.78").unwrap().to_string();
assert_eq!(ip.as_str(), "12.34.56.78");
}
#[test]
fn parse_ip_multi_line() {
use self::super::*;
let ip = parse_ip(r#"
Hello and welcome!
Your IP Address appears to be: 34.11.250.255,
thank you for using this service!
"#).unwrap().to_string();
assert_eq!(ip.as_str(), "34.11.250.255");
}
#[test]
fn parse_ip_multiple_ips() {
use self::super::*;
let ip = parse_ip("12.56.34.78, 12.34.56.78").unwrap().to_string();
assert_eq!(ip.as_str(), "12.56.34.78");
}
}