hyper_http_hs_example/
main.rs

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1use std::sync::Arc;
2
3use anyhow::Result;
4use futures::StreamExt;
5use hyper::body::Incoming;
6use hyper::server::conn::http1;
7use hyper::service::service_fn;
8use hyper::{Request, Response, StatusCode};
9use hyper_util::rt::TokioIo;
10use tokio_util::sync::CancellationToken;
11
12use arti_client::{TorClient, TorClientConfig};
13use safelog::sensitive;
14use tor_cell::relaycell::msg::Connected;
15use tor_hsservice::config::OnionServiceConfigBuilder;
16use tor_hsservice::StreamRequest;
17use tor_proto::stream::IncomingStreamRequest;
18
19struct WebHandler {
20    shutdown: CancellationToken,
21}
22
23impl WebHandler {
24    async fn serve(&self, request: Request<Incoming>) -> Result<Response<String>> {
25        let path = request.uri().path();
26
27        // TODO: Unauthenticated management. This route is accessible by anyone, and exists solely
28        //  to demonstrate how to safely shutdown further incoming requests. You should probably
29        //  move this elsewhere to ensure proper checks are in place!
30        if path == "/shutdown" {
31            self.shutdown.cancel();
32        }
33
34        Ok(Response::builder().status(StatusCode::OK).body(format!(
35            "{} {}",
36            request.method(),
37            path
38        ))?)
39    }
40}
41
42#[tokio::main]
43async fn main() {
44    // Make sure you read doc/OnionService.md to extract your Onion service hostname
45
46    // Arti uses the `tracing` crate for logging. Install a handler for this, to print Arti's logs.
47    // (You'll need to set RUST_LOG=info as an environment variable to actually see much; also try
48    // =debug for more detailed logging.)
49    tracing_subscriber::fmt::init();
50
51    // Initialize web server data, if you need to
52    let handler = Arc::new(WebHandler {
53        shutdown: CancellationToken::new(),
54    });
55
56    // The client config includes things like where to store persistent Tor network state.
57    // The defaults provided are the same as the Arti standalone application, and save data
58    // to a conventional place depending on operating system (for example, ~/.local/share/arti
59    // on Linux platforms)
60    let config = TorClientConfig::default();
61
62    // We now let the Arti client start and bootstrap a connection to the network.
63    // (This takes a while to gather the necessary consensus state, etc.)
64    let client = TorClient::create_bootstrapped(config).await.unwrap();
65
66    let svc_cfg = OnionServiceConfigBuilder::default()
67        .nickname("allium-ampeloprasum".parse().unwrap())
68        .build()
69        .unwrap();
70    let (service, request_stream) = client.launch_onion_service(svc_cfg).unwrap();
71
72    eprintln!("ready to serve connections");
73
74    let stream_requests = tor_hsservice::handle_rend_requests(request_stream)
75        .take_until(handler.shutdown.cancelled());
76    tokio::pin!(stream_requests);
77
78    while let Some(stream_request) = stream_requests.next().await {
79        // incoming connection
80        let handler = handler.clone();
81
82        tokio::spawn(async move {
83            let request = stream_request.request().clone();
84            let result = handle_stream_request(stream_request, handler).await;
85
86            match result {
87                Ok(()) => {}
88                Err(err) => {
89                    eprintln!("error serving connection {:?}: {}", sensitive(request), err);
90                }
91            }
92        });
93    }
94
95    drop(service);
96    eprintln!("onion service exited cleanly");
97}
98
99async fn handle_stream_request(
100    stream_request: StreamRequest,
101    handler: Arc<WebHandler>,
102) -> Result<()> {
103    match stream_request.request() {
104        IncomingStreamRequest::Begin(begin) if begin.port() == 80 => {
105            let onion_service_stream = stream_request.accept(Connected::new_empty()).await?;
106            let io = TokioIo::new(onion_service_stream);
107
108            http1::Builder::new()
109                .serve_connection(io, service_fn(|request| handler.serve(request)))
110                .await?;
111        }
112        _ => {
113            stream_request.shutdown_circuit()?;
114        }
115    }
116
117    Ok(())
118}
hyper_http_hs_example/main.rs

hyper_http_hs_example/
main.rs
