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use base64;
use futures::Stream;
use hyper::header;
use v2::*;
pub type FutureTokenAuth = Box<futures::Future<Item = TokenAuth, Error = Error> + 'static>;
#[derive(Debug, Default, Deserialize, Serialize)]
pub struct TokenAuth {
token: String,
expires_in: Option<u32>,
issued_at: Option<String>,
refresh_token: Option<String>,
}
impl TokenAuth {
pub fn token(&self) -> &str {
self.token.as_str()
}
}
type FutureString = Box<futures::Future<Item = String, Error = self::Error>>;
impl Client {
fn get_token_provider(&self) -> FutureString {
let url = {
let ep = format!("{}/v2/", self.base_url);
match hyper::Uri::from_str(ep.as_str()) {
Ok(url) => url,
Err(e) => {
return Box::new(futures::future::err::<_, _>(Error::from(format!(
"failed to parse url from string: {}",
e
))))
}
}
};
let req = match self.new_request(hyper::Method::GET, url) {
Ok(r) => r,
Err(e) => {
let msg = format!("new_request failed: {}", e);
error!("{}", msg);
return Box::new(futures::future::err::<_, _>(Error::from(msg)));
}
};
let freq = self.hclient.request(req);
let www_auth = freq
.from_err()
.and_then(|r| {
let a = r
.headers()
.get(hyper::header::WWW_AUTHENTICATE)
.ok_or_else(|| Error::from("get_token: missing Auth header"))?;
let chal = String::from_utf8(a.as_bytes().to_vec())?;
Ok(chal)
}).and_then(move |hdr| {
let mut auth_ep = "".to_owned();
let mut service = None;
for item in hdr.trim_left_matches("Bearer ").split(',') {
let kv: Vec<&str> = item.split('=').collect();
match (kv.get(0), kv.get(1)) {
(Some(&"realm"), Some(v)) => auth_ep = v.trim_matches('"').to_owned(),
(Some(&"service"), Some(v)) => service = Some(v.trim_matches('"')),
(Some(&"scope"), _) => {}
(_, _) => return Err("unsupported key".to_owned().into()),
};
}
trace!("Token provider: {}", auth_ep);
if let Some(sv) = service {
auth_ep += &format!("?service={}", sv);
trace!("Service identity: {}", sv);
}
Ok(auth_ep)
});
Box::new(www_auth)
}
pub fn set_token(&mut self, token: Option<&str>) -> &Self {
if let Some(ref t) = token {
self.token = Some(t.to_string());
}
self
}
pub fn login(&self, scopes: &[&str]) -> FutureTokenAuth {
let subclient = self.hclient.clone();
let creds = self.credentials.clone();
let scope = scopes
.iter()
.fold("".to_string(), |acc, &s| acc + "&scope=" + s);
let auth = self
.get_token_provider()
.and_then(move |token_ep| {
let auth_ep = token_ep + scope.as_str();
trace!("Token endpoint: {}", auth_ep);
hyper::Uri::from_str(auth_ep.as_str()).map_err(|e| e.into())
}).and_then(move |u| {
let mut auth_req = hyper::Request::default();
*auth_req.method_mut() = hyper::Method::GET;
*auth_req.uri_mut() = u;
if let Some(c) = creds {
let plain = format!("{}:{}", c.0, c.1);
let basic = format!("Basic {}", base64::encode(&plain));
if let Ok(basic_header) = header::HeaderValue::from_str(&basic) {
auth_req
.headers_mut()
.append(header::AUTHORIZATION, basic_header);
} else {
let msg = format!("could not parse HeaderValue from '{}'", basic);
error!("{}", msg);
};
};
subclient.request(auth_req).map_err(|e| e.into())
})
.and_then(|r| {
let status = r.status();
trace!("Got status {}", status);
match status {
hyper::StatusCode::OK => Ok(r),
_ => Err(format!("login: wrong HTTP status '{}'", status).into()),
}
}).and_then(|r| {
r.into_body()
.concat2()
.map_err(|e| format!("login: failed to fetch the whole body: {}", e).into())
}).and_then(|body| {
let s = String::from_utf8(body.into_bytes().to_vec())?;
serde_json::from_slice(s.as_bytes()).map_err(|e| e.into())
}).inspect(|_| {
trace!("Got token");
});
Box::new(auth)
}
pub fn is_auth(&self, token: Option<&str>) -> FutureBool {
let url = match hyper::Uri::from_str((self.base_url.clone() + "/v2/").as_str()) {
Ok(url) => url,
Err(e) => return Box::new(futures::future::err(e.into())),
};
let mut req = match self.new_request(hyper::Method::GET, url.clone()) {
Ok(r) => r,
Err(e) => {
let msg = format!("new_request failed: {}", e);
error!("{}", msg);
return Box::new(futures::future::err(Error::from(msg)));
}
};
if let Some(t) = token {
let bearer = format!("Bearer {}", t);
if let Ok(basic_header) = header::HeaderValue::from_str(&bearer) {
req.headers_mut()
.append(header::AUTHORIZATION, basic_header);
} else {
let msg = format!("could not parse HeaderValue from '{}'", bearer);
error!("{}", msg);
return Box::new(futures::future::err(Error::from(msg)));
};
};
let freq = self.hclient.request(req);
let fres = freq
.from_err()
.inspect(move |_| {
trace!("GET {:?}", url);
}).and_then(move |r| {
let status = r.status();
trace!("Got status {}", status);
match status {
hyper::StatusCode::OK => Ok(true),
hyper::StatusCode::UNAUTHORIZED => Ok(false),
_ => Err(format!("is_auth: wrong HTTP status '{}'", status).into()),
}
});
Box::new(fres)
}
}