auth.rs

fn sign(req: RequestWriter, path: &Path) -> String {
    let mut hmac = hmac::Hmac::new(sha1::Sha1::new(), "foo".as_bytes());
    string_to_sign(hmac, req, path);
    hmac.result().code().to_base64(URL_SAFE)
}

// See: http://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthentication.html
// The string to sign consists of the following data:
// StringToSign = HTTP-Verb + "\n" +
//  Content-MD5 + "\n" +
//  Content-Type + "\n" +
//  Date + "\n" +
//  CanonicalizedAmzHeaders +
//  CanonicalizedResource;
#[allow(dead_code)]
fn string_to_sign(mut hmac: hmac::Hmac<sha1::Sha1>, req: RequestWriter, path: &Path) {
    hmac.input(req.method.to_str().as_bytes());
    hmac.input("\n".as_bytes());
    hmac.input(md5sum(path).as_bytes());
    hmac.input("\n".as_bytes());
    hmac.input(contenttype(path).as_bytes());
    hmac.input("\n".as_bytes());
    hmac.input(req.headers.date.unwrap().http_value().as_bytes());
    hmac.input("\n".as_bytes());
}