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extern crate curl;
use std::net::{IpAddr,AddrParseError};
use std::str;
use curl::easy::{Easy2, Handler, WriteError};
#[derive(Debug)]
pub enum MyIpError {
AddressParseError(AddrParseError),
CurlError(curl::Error),
HttpError { code: u32 },
Utf8Error(str::Utf8Error)
}
struct Collector(Vec<u8>);
impl Handler for Collector {
fn write(&mut self, data: &[u8]) -> Result<usize, WriteError> {
self.0.extend_from_slice(data);
Ok(data.len())
}
}
pub fn get() -> Result<IpAddr,MyIpError> {
let mut easy = Easy2::new(Collector(Vec::new()));
easy.get(true).map_err(|e| MyIpError::CurlError(e))?;
easy.url("http://www.myip.ch").map_err(|e| MyIpError::CurlError(e))?;
easy.perform().map_err(|e| MyIpError::CurlError(e))?;
let response_code = easy.response_code().map_err(|e| MyIpError::CurlError(e))?;
if response_code != 200 {
return Err(MyIpError::HttpError{code: response_code});
}
let data = &easy.get_ref().0;
let data_string: &str = str::from_utf8(&data).map_err(|e| MyIpError::Utf8Error(e))?;
let mut ip = String::new();
for line in data_string.split("\n") {
if line.contains("Current IP Address") {
ip = String::from(line.replace("<br/>","").replace("Current IP Address: ", "").trim());
}
}
ip.parse().map_err(|e| MyIpError::AddressParseError(e))
}
#[cfg(test)]
mod tests{
use super::*;
#[test]
fn simple() {
println!("My IP: {}", get().unwrap());
}
}