More example code? about axum-auth HOT 2 CLOSED

pub struct AuthBasicExists(bool);

#[async_trait]
impl<B> FromRequest<B> for AuthBasicExists
where
    B: Send,
{
    type Rejection = (StatusCode, &'static str);

    async fn from_request(req: &mut RequestParts<B>) -> std::result::Result<Self, Self::Rejection> {
        let authorisation = req.headers().get(AUTHORIZATION)
        if let Some(authorisation) = authorisation {
            // continue with the original code
            let authorisation = authorisation.to_str()
            .map_err(|_| {
                (
                    StatusCode::BAD_REQUEST,
                    "`Authorization` header contains invalid characters",
                )
            })?;

            // Check that its a well-formed basic auth then decode and return
            let split = authorisation.split_once(' ');
            match split {
                Some((name, contents)) if name == "Basic" => {
                    // decode and instead of returning credentials, just return if they exist
                    decode_basic(contents)?;
                    Ok(Self(true))
                },
                _ => Err((
                    StatusCode::BAD_REQUEST,
                    "`Authorization` header must be for basic authentication",
                )),
            }
        } else {
            Ok(Self(false)) // return if its not there
        }
    }
}