71 lines
2.6 KiB
Rust
71 lines
2.6 KiB
Rust
use anyhow::*;
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use log::LevelFilter;
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use tokio::sync::RwLock;
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use northstar::{Certificate, GEMINI_MIME, GEMINI_PORT, Request, Response, Server};
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use std::collections::HashMap;
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use std::sync::Arc;
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// Workaround for Certificates not being hashable
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type CertBytes = Vec<u8>;
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#[tokio::main]
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async fn main() -> Result<()> {
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env_logger::builder()
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.filter_module("northstar", LevelFilter::Debug)
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.init();
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let users = Arc::<RwLock::<HashMap<CertBytes, String>>>::default();
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Server::bind(("0.0.0.0", GEMINI_PORT))
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.add_route("/", move|req| handle_request(users.clone(), req))
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.serve()
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.await
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}
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/// An ultra-simple demonstration of simple authentication.
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///
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/// If the user attempts to connect, they will be prompted to create a client certificate.
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/// Once they've made one, they'll be given the opportunity to create an account by
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/// selecting a username. They'll then get a message confirming their account creation.
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/// Any time this user visits the site in the future, they'll get a personalized welcome
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/// message.
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async fn handle_request(users: Arc<RwLock<HashMap<CertBytes, String>>>, request: Request) -> Result<Response> {
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if let Some(Certificate(cert_bytes)) = request.certificate() {
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// The user provided a certificate
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let users_read = users.read().await;
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if let Some(user) = users_read.get(cert_bytes) {
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// The user has already registered
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Ok(
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Response::success_with_body(
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&GEMINI_MIME,
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format!("Welcome {}!", user)
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)
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)
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} else {
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// The user still needs to register
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drop(users_read);
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if let Some(query_part) = request.uri().query() {
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// The user provided some input (a username request)
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let username = query_part.as_str();
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let mut users_write = users.write().await;
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users_write.insert(cert_bytes.clone(), username.to_owned());
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Ok(
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Response::success_with_body(
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&GEMINI_MIME,
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format!(
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"Your account has been created {}! Welcome!",
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username
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)
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)
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)
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} else {
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// The user didn't provide input, and should be prompted
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Response::input("What username would you like?")
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}
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}
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} else {
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// The user didn't provide a certificate
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Ok(Response::client_certificate_required())
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}
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}
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